# HG changeset patch # User koda # Date 1303678677 -7200 # Node ID f7e49eff37081e745dc9f0ff9099723856bbc2eb # Parent e353ca78d28b00abd77bd4177392c90cc4fff55c add libTremor sources (integer-only libvorbis implementation) to repo and ios project diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/CHANGELOG --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/CHANGELOG Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,19 @@ +*** 20020517: 1.0.2 *** + + Playback bugfix to floor1; mode mistakenly used for sizing instead + of blockflag + +*** 20020515: 1.0.1 *** + + Added complete API documentation to source tarball. No code + changes. + +*** 20020412: 1.0.1 *** + + Fixed a clipping bug that affected ARM processors; negative + overflows were being properly clipped, but then clobbered to + positive by the positive overflow chec (asm_arm.h:CLIP_TO_15) + +*** 20020403: 1.0.0 *** + + Initial version \ No newline at end of file diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/COPYING --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/COPYING Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,28 @@ +Copyright (c) 2002, Xiph.org Foundation + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: + +- Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. + +- Neither the name of the Xiph.org Foundation nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION +OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/Makefile.am --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/Makefile.am Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,38 @@ +AUTOMAKE_OPTIONS = foreign + +INCLUDES = -I./ + +lib_LTLIBRARIES = libvorbisidec.la + +libvorbisidec_la_SOURCES = mdct.c block.c window.c \ + synthesis.c info.c \ + floor1.c floor0.c vorbisfile.c \ + res012.c mapping0.c registry.c codebook.c \ + sharedbook.c framing.c bitwise.c \ + codebook.h misc.h mdct_lookup.h\ + os.h mdct.h block.h ivorbisfile.h lsp_lookup.h\ + registry.h window.h window_lookup.h\ + codec_internal.h backends.h ogg.h \ + asm_arm.h ivorbiscodec.h +libvorbisidec_la_LDFLAGS = -version-info @V_LIB_CURRENT@:@V_LIB_REVISION@:@V_LIB_AGE@ + +EXTRA_PROGRAMS = ivorbisfile_example +CLEANFILES = $(EXTRA_PROGRAMS) $(lib_LTLIBRARIES) + +ivorbisfile_example_SOURCES = ivorbisfile_example.c +ivorbisfile_example_LDFLAGS = -static +ivorbisfile_example_LDADD = libvorbisidec.la + +includedir = $(prefix)/include/tremor + +include_HEADERS = ivorbiscodec.h ivorbisfile.h ogg.h os_types.h config_types.h + +example: + -ln -fs . vorbis + $(MAKE) ivorbisfile_example + +debug: + $(MAKE) all CFLAGS="@DEBUG@" + +profile: + $(MAKE) all CFLAGS="@PROFILE@" diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/README --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/README Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,46 @@ +This README covers the Ogg Vorbis 'Tremor' integer playback codec +source as of date 2002 09 02, version 1.0.0. + + ****** + +The C source in this package will build on any ANSI C compiler and +function completely and properly on any platform. The included build +system assumes GNU build system and make tools (m4, automake, +autoconf, libtool and gmake). GCC is not required, although GCC is +the most tested compiler. To build using GNU tools, type in the +source directory: + +./autogen.sh +make + +Currently, the source implements playback in pure C on all platforms +except ARM, where a [currently] small amount of assembly (see +asm_arm.h) is used to implement 64 bit math operations and fast LSP +computation. If building on ARM without the benefit of GNU build +system tools, be sure that '_ARM_ASSEM_' is #defined by the build +system if this assembly is desired, else the resulting library will +use whatever 64 bit math builtins the compiler implements. + +No math library is required by this source. No floating point +operations are used at any point in either setup or decode. This +decoder library will properly decode any past, current or future +Vorbis I file or stream. + + ******** + +The build system produces a static and [when supported by the OS] +dynamic library named 'libvorbisidec'. This library exposes an API +nearly identical to the BSD reference library's 'libvorbisfile', +including all the features familiar to users of vorbisfile. This API +is similar enough that the proper header file to include is named +'ivorbisfile.h' [included in the source build directory]. Lower level +libvorbis-style headers and structures are in 'ivorbiscodec.h' +[included in the source build directory]. A simple example program, +ivorbisfile_example.c, can be built with 'make example'. + + ******** + +Detailed Tremor API Documentation begins at doc/index.html + +Monty +xiph.org diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/Version_script.in --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/Version_script.in Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,49 @@ +# +# Export file for libvorbisidec +# +# Only the symbols listed in the global section will be callable from +# applications linking to libvorbisidec. +# + +@PACKAGE@.so.1 +{ + global: + ov_clear; + ov_open; + ov_open_callbacks; + ov_test; + ov_test_callbacks; + ov_test_open; + ov_bitrate; + ov_bitrate_instant; + ov_streams; + ov_seekable; + ov_serialnumber; + ov_raw_total; + ov_pcm_total; + ov_time_total; + ov_raw_seek; + ov_pcm_seek; + ov_pcm_seek_page; + ov_time_seek; + ov_time_seek_page; + ov_raw_tell; + ov_pcm_tell; + ov_time_tell; + ov_info; + ov_comment; + ov_read; + + vorbis_info_init; + 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+/* End XCBuildConfiguration section */ + +/* Begin XCConfigurationList section */ + 1DEB921E08733DC00010E9CD /* Build configuration list for PBXNativeTarget "libTremor" */ = { + isa = XCConfigurationList; + buildConfigurations = ( + 1DEB921F08733DC00010E9CD /* Debug */, + 1DEB922008733DC00010E9CD /* Release */, + ); + defaultConfigurationIsVisible = 0; + defaultConfigurationName = Release; + }; + 1DEB922208733DC00010E9CD /* Build configuration list for PBXProject "Tremor" */ = { + isa = XCConfigurationList; + buildConfigurations = ( + 1DEB922308733DC00010E9CD /* Debug */, + 1DEB922408733DC00010E9CD /* Release */, + ); + defaultConfigurationIsVisible = 0; + defaultConfigurationName = Release; + }; +/* End XCConfigurationList section */ + }; + rootObject = 0867D690FE84028FC02AAC07 /* Project object */; +} diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/Xcode/Tremor_Prefix.pch --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/Xcode/Tremor_Prefix.pch Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,7 @@ +// +// Prefix header for all source files of the 'CocoaTouchStaticLibrary' target in the 'CocoaTouchStaticLibrary' project. +// + +#ifdef __OBJC__ + #import +#endif diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/asm_arm.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/asm_arm.h Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,243 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: arm7 and later wide math functions + + ********************************************************************/ + +#ifdef _ARM_ASSEM_ + +#if !defined(_V_WIDE_MATH) && !defined(_LOW_ACCURACY_) +#define _V_WIDE_MATH + +static inline ogg_int32_t MULT32(ogg_int32_t x, ogg_int32_t y) { + int lo,hi; + asm volatile("smull\t%0, %1, %2, %3" + : "=&r"(lo),"=&r"(hi) + : "%r"(x),"r"(y) + : "cc"); + return(hi); +} + +static inline ogg_int32_t MULT31(ogg_int32_t x, ogg_int32_t y) { + return MULT32(x,y)<<1; +} + +static inline ogg_int32_t MULT31_SHIFT15(ogg_int32_t x, ogg_int32_t y) { + int lo,hi; + asm volatile("smull %0, %1, %2, %3\n\t" + "movs %0, %0, lsr #15\n\t" + "adc %1, %0, %1, lsl #17\n\t" + : "=&r"(lo),"=&r"(hi) + : "%r"(x),"r"(y) + : "cc"); + return(hi); +} + +#define MB() asm volatile ("" : : : "memory") + +static inline void XPROD32(ogg_int32_t a, ogg_int32_t b, + ogg_int32_t t, ogg_int32_t v, + ogg_int32_t *x, ogg_int32_t *y) +{ + int x1, y1, l; + asm( "smull %0, %1, %4, %6\n\t" + "smlal %0, %1, %5, %7\n\t" + "rsb %3, %4, #0\n\t" + "smull %0, %2, %5, %6\n\t" + "smlal %0, %2, %3, %7" + : "=&r" (l), "=&r" (x1), "=&r" (y1), "=r" (a) + : "3" (a), "r" (b), "r" (t), "r" (v) + : "cc" ); + *x = x1; + MB(); + *y = y1; +} + +static inline void XPROD31(ogg_int32_t a, ogg_int32_t b, + ogg_int32_t t, ogg_int32_t v, + ogg_int32_t *x, ogg_int32_t *y) +{ + int x1, y1, l; + asm( "smull %0, %1, %4, %6\n\t" + "smlal %0, %1, %5, %7\n\t" + "rsb %3, %4, #0\n\t" + "smull %0, %2, %5, %6\n\t" + "smlal %0, %2, %3, %7" + : "=&r" (l), "=&r" (x1), "=&r" (y1), "=r" (a) + : "3" (a), "r" (b), "r" (t), "r" (v) + : "cc" ); + *x = x1 << 1; + MB(); + *y = y1 << 1; +} + +static inline void XNPROD31(ogg_int32_t a, ogg_int32_t b, + ogg_int32_t t, ogg_int32_t v, + ogg_int32_t *x, ogg_int32_t *y) +{ + int x1, y1, l; + asm( "rsb %2, %4, #0\n\t" + "smull %0, %1, %3, %5\n\t" + "smlal %0, %1, %2, %6\n\t" + "smull %0, %2, %4, %5\n\t" + "smlal %0, %2, %3, %6" + : "=&r" (l), "=&r" (x1), "=&r" (y1) + : "r" (a), "r" (b), "r" (t), "r" (v) + : "cc" ); + *x = x1 << 1; + MB(); + *y = y1 << 1; +} + +#endif + +#ifndef _V_CLIP_MATH +#define _V_CLIP_MATH + +static inline ogg_int32_t CLIP_TO_15(ogg_int32_t x) { + int tmp; + asm volatile("subs %1, %0, #32768\n\t" + "movpl %0, #0x7f00\n\t" + "orrpl %0, %0, #0xff\n" + "adds %1, %0, #32768\n\t" + "movmi %0, #0x8000" + : "+r"(x),"=r"(tmp) + : + : "cc"); + return(x); +} + +#endif + +#ifndef _V_LSP_MATH_ASM +#define _V_LSP_MATH_ASM + +static inline void lsp_loop_asm(ogg_uint32_t *qip,ogg_uint32_t *pip, + ogg_int32_t *qexpp, + ogg_int32_t *ilsp,ogg_int32_t wi, + ogg_int32_t m){ + + ogg_uint32_t qi=*qip,pi=*pip; + ogg_int32_t qexp=*qexpp; + + asm("mov r0,%3;" + "mov r1,%5,asr#1;" + "add r0,r0,r1,lsl#3;" + "1:" + + "ldmdb r0!,{r1,r3};" + "subs r1,r1,%4;" //ilsp[j]-wi + "rsbmi r1,r1,#0;" //labs(ilsp[j]-wi) + "umull %0,r2,r1,%0;" //qi*=labs(ilsp[j]-wi) + + "subs r1,r3,%4;" //ilsp[j+1]-wi + "rsbmi r1,r1,#0;" //labs(ilsp[j+1]-wi) + "umull %1,r3,r1,%1;" //pi*=labs(ilsp[j+1]-wi) + + "cmn r2,r3;" // shift down 16? + "beq 0f;" + "add %2,%2,#16;" + "mov %0,%0,lsr #16;" + "orr %0,%0,r2,lsl #16;" + "mov %1,%1,lsr #16;" + "orr %1,%1,r3,lsl #16;" + "0:" + "cmp r0,%3;\n" + "bhi 1b;\n" + + // odd filter assymetry + "ands r0,%5,#1;\n" + "beq 2f;\n" + "add r0,%3,%5,lsl#2;\n" + + "ldr r1,[r0,#-4];\n" + "mov r0,#0x4000;\n" + + "subs r1,r1,%4;\n" //ilsp[j]-wi + "rsbmi r1,r1,#0;\n" //labs(ilsp[j]-wi) + "umull %0,r2,r1,%0;\n" //qi*=labs(ilsp[j]-wi) + "umull %1,r3,r0,%1;\n" //pi*=labs(ilsp[j+1]-wi) + + "cmn r2,r3;\n" // shift down 16? + "beq 2f;\n" + "add %2,%2,#16;\n" + "mov %0,%0,lsr #16;\n" + "orr %0,%0,r2,lsl #16;\n" + "mov %1,%1,lsr #16;\n" + "orr %1,%1,r3,lsl #16;\n" + + //qi=(pi>>shift)*labs(ilsp[j]-wi); + //pi=(qi>>shift)*labs(ilsp[j+1]-wi); + //qexp+=shift; + + //} + + /* normalize to max 16 sig figs */ + "2:" + "mov r2,#0;" + "orr r1,%0,%1;" + "tst r1,#0xff000000;" + "addne r2,r2,#8;" + "movne r1,r1,lsr #8;" + "tst r1,#0x00f00000;" + "addne r2,r2,#4;" + "movne r1,r1,lsr #4;" + "tst r1,#0x000c0000;" + "addne r2,r2,#2;" + "movne r1,r1,lsr #2;" + "tst r1,#0x00020000;" + "addne r2,r2,#1;" + "movne r1,r1,lsr #1;" + "tst r1,#0x00010000;" + "addne r2,r2,#1;" + "mov %0,%0,lsr r2;" + "mov %1,%1,lsr r2;" + "add %2,%2,r2;" + + : "+r"(qi),"+r"(pi),"+r"(qexp) + : "r"(ilsp),"r"(wi),"r"(m) + : "r0","r1","r2","r3","cc"); + + *qip=qi; + *pip=pi; + *qexpp=qexp; +} + +static inline void lsp_norm_asm(ogg_uint32_t *qip,ogg_int32_t *qexpp){ + + ogg_uint32_t qi=*qip; + ogg_int32_t qexp=*qexpp; + + asm("tst %0,#0x0000ff00;" + "moveq %0,%0,lsl #8;" + "subeq %1,%1,#8;" + "tst %0,#0x0000f000;" + "moveq %0,%0,lsl #4;" + "subeq %1,%1,#4;" + "tst %0,#0x0000c000;" + "moveq %0,%0,lsl #2;" + "subeq %1,%1,#2;" + "tst %0,#0x00008000;" + "moveq %0,%0,lsl #1;" + "subeq %1,%1,#1;" + : "+r"(qi),"+r"(qexp) + : + : "cc"); + *qip=qi; + *qexpp=qexp; +} + +#endif +#endif + diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/autogen.sh --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/autogen.sh Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,120 @@ +#!/bin/sh +# Run this to set up the build system: configure, makefiles, etc. +# (based on the version in enlightenment's cvs) + +package="vorbisdec" + +olddir=`pwd` +srcdir=`dirname $0` +test -z "$srcdir" && srcdir=. + +cd "$srcdir" +DIE=0 + +echo "checking for autoconf... " +(autoconf --version) < /dev/null > /dev/null 2>&1 || { + echo + echo "You must have autoconf installed to compile $package." + echo "Download the appropriate package for your distribution," + echo "or get the source tarball at ftp://ftp.gnu.org/pub/gnu/" + DIE=1 +} + +VERSIONGREP="sed -e s/.*[^0-9\.]\([0-9]\.[0-9]\).*/\1/" +VERSIONMKINT="sed -e s/[^0-9]//" + +# do we need automake? +if test -r Makefile.am; then + AM_OPTIONS=`fgrep AUTOMAKE_OPTIONS Makefile.am` + AM_NEEDED=`echo $AM_OPTIONS | $VERSIONGREP` + if test x"$AM_NEEDED" = "x$AM_OPTIONS"; then + AM_NEEDED="" + fi + if test -z $AM_NEEDED; then + echo -n "checking for automake... " + AUTOMAKE=automake + ACLOCAL=aclocal + if ($AUTOMAKE --version < /dev/null > /dev/null 2>&1); then + echo "yes" + else + echo "no" + AUTOMAKE= + fi + else + echo -n "checking for automake $AM_NEEDED or later... " + for am in automake-$AM_NEEDED automake$AM_NEEDED automake; do + ($am --version < /dev/null > /dev/null 2>&1) || continue + ver=`$am --version < /dev/null | head -n 1 | $VERSIONGREP | $VERSIONMKINT` + verneeded=`echo $AM_NEEDED | $VERSIONMKINT` + if test $ver -ge $verneeded; then + AUTOMAKE=$am + echo $AUTOMAKE + break + fi + done + test -z $AUTOMAKE && echo "no" + echo -n "checking for aclocal $AM_NEEDED or later... " + for ac in aclocal-$AM_NEEDED aclocal$AM_NEEDED aclocal; do + ($ac --version < /dev/null > /dev/null 2>&1) || continue + ver=`$ac --version < /dev/null | head -n 1 | $VERSIONGREP | $VERSIONMKINT` + verneeded=`echo $AM_NEEDED | $VERSIONMKINT` + if test $ver -ge $verneeded; then + ACLOCAL=$ac + echo $ACLOCAL + break + fi + done + test -z $ACLOCAL && echo "no" + fi + test -z $AUTOMAKE || test -z $ACLOCAL && { + echo + echo "You must have automake installed to compile $package." + echo "Download the appropriate package for your distribution," + echo "or get the source tarball at ftp://ftp.gnu.org/pub/gnu/" + exit 1 + } +fi + +echo -n "checking for libtool... " +for LIBTOOLIZE in libtoolize glibtoolize nope; do + ($LIBTOOLIZE --version) < /dev/null > /dev/null 2>&1 && break +done +if test x$LIBTOOLIZE = xnope; then + echo "nope." + LIBTOOLIZE=libtoolize +else + echo $LIBTOOLIZE +fi +($LIBTOOLIZE --version) < /dev/null > /dev/null 2>&1 || { + echo + echo "You must have libtool installed to compile $package." + echo "Download the appropriate package for your system," + echo "or get the source from one of the GNU ftp sites" + echo "listed in http://www.gnu.org/order/ftp.html" + DIE=1 +} + +if test "$DIE" -eq 1; then + exit 1 +fi + +if test -z "$*"; then + echo "I am going to run ./configure with no arguments - if you wish " + echo "to pass any to it, please specify them on the $0 command line." +fi + +echo "Generating configuration files for $package, please wait...." + +echo " $ACLOCAL $ACLOCAL_FLAGS" +$ACLOCAL $ACLOCAL_FLAGS || exit 1 +echo " $LIBTOOLIZE --automake" +$LIBTOOLIZE --automake || exit 1 +echo " autoheader" +autoheader || exit 1 +echo " $AUTOMAKE --add-missing $AUTOMAKE_FLAGS" +$AUTOMAKE --add-missing $AUTOMAKE_FLAGS || exit 1 +echo " autoconf" +autoconf || exit 1 + +cd $olddir +$srcdir/configure --enable-maintainer-mode "$@" && echo diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/backends.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/backends.h Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,130 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: backend and mapping structures + + ********************************************************************/ + +/* this is exposed up here because we need it for static modes. + Lookups for each backend aren't exposed because there's no reason + to do so */ + +#ifndef _vorbis_backend_h_ +#define _vorbis_backend_h_ + +#include "codec_internal.h" + +/* this would all be simpler/shorter with templates, but.... */ +/* Transform backend generic *************************************/ + +/* only mdct right now. Flesh it out more if we ever transcend mdct + in the transform domain */ + +/* Floor backend generic *****************************************/ +typedef struct{ + vorbis_info_floor *(*unpack)(vorbis_info *,oggpack_buffer *); + vorbis_look_floor *(*look) (vorbis_dsp_state *,vorbis_info_mode *, + vorbis_info_floor *); + void (*free_info) (vorbis_info_floor *); + void (*free_look) (vorbis_look_floor *); + void *(*inverse1) (struct vorbis_block *,vorbis_look_floor *); + int (*inverse2) (struct vorbis_block *,vorbis_look_floor *, + void *buffer,ogg_int32_t *); +} vorbis_func_floor; + +typedef struct{ + int order; + long rate; + long barkmap; + + int ampbits; + int ampdB; + + int numbooks; /* <= 16 */ + int books[16]; + +} vorbis_info_floor0; + +#define VIF_POSIT 63 +#define VIF_CLASS 16 +#define VIF_PARTS 31 +typedef struct{ + int partitions; /* 0 to 31 */ + int partitionclass[VIF_PARTS]; /* 0 to 15 */ + + int class_dim[VIF_CLASS]; /* 1 to 8 */ + int class_subs[VIF_CLASS]; /* 0,1,2,3 (bits: 1< +#include +#include "ogg.h" + +static unsigned long mask[]= +{0x00000000,0x00000001,0x00000003,0x00000007,0x0000000f, + 0x0000001f,0x0000003f,0x0000007f,0x000000ff,0x000001ff, + 0x000003ff,0x000007ff,0x00000fff,0x00001fff,0x00003fff, + 0x00007fff,0x0000ffff,0x0001ffff,0x0003ffff,0x0007ffff, + 0x000fffff,0x001fffff,0x003fffff,0x007fffff,0x00ffffff, + 0x01ffffff,0x03ffffff,0x07ffffff,0x0fffffff,0x1fffffff, + 0x3fffffff,0x7fffffff,0xffffffff }; + +/* mark read process as having run off the end */ +static void _adv_halt(oggpack_buffer *b){ + b->headptr=b->head->buffer->data+b->head->begin+b->head->length; + b->headend=-1; + b->headbit=0; +} + +/* spans forward, skipping as many bytes as headend is negative; if + headend is zero, simply finds next byte. If we're up to the end + of the buffer, leaves headend at zero. If we've read past the end, + halt the decode process. */ +static void _span(oggpack_buffer *b){ + while(b->headend<1){ + if(b->head->next){ + b->count+=b->head->length; + b->head=b->head->next; + b->headptr=b->head->buffer->data+b->head->begin-b->headend; + b->headend+=b->head->length; + }else{ + /* we've either met the end of decode, or gone past it. halt + only if we're past */ + if(b->headend<0 || b->headbit) + /* read has fallen off the end */ + _adv_halt(b); + + break; + } + } +} + +void oggpack_readinit(oggpack_buffer *b,ogg_reference *r){ + memset(b,0,sizeof(*b)); + + b->tail=b->head=r; + b->count=0; + b->headptr=b->head->buffer->data+b->head->begin; + b->headend=b->head->length; + _span(b); +} + +#define _lookspan() while(!end){\ + head=head->next;\ + if(!head) return -1;\ + ptr=head->buffer->data + head->begin;\ + end=head->length;\ + } + +/* Read in bits without advancing the bitptr; bits <= 32 */ +long oggpack_look(oggpack_buffer *b,int bits){ + unsigned long m=mask[bits]; + unsigned long ret=-1; + + bits+=b->headbit; + + if(bits >= b->headend<<3){ + int end=b->headend; + unsigned char *ptr=b->headptr; + ogg_reference *head=b->head; + + if(end<0)return -1; + + if(bits){ + _lookspan(); + ret=*ptr++>>b->headbit; + if(bits>8){ + --end; + _lookspan(); + ret|=*ptr++<<(8-b->headbit); + if(bits>16){ + --end; + _lookspan(); + ret|=*ptr++<<(16-b->headbit); + if(bits>24){ + --end; + _lookspan(); + ret|=*ptr++<<(24-b->headbit); + if(bits>32 && b->headbit){ + --end; + _lookspan(); + ret|=*ptr<<(32-b->headbit); + } + } + } + } + } + + }else{ + + /* make this a switch jump-table */ + ret=b->headptr[0]>>b->headbit; + if(bits>8){ + ret|=b->headptr[1]<<(8-b->headbit); + if(bits>16){ + ret|=b->headptr[2]<<(16-b->headbit); + if(bits>24){ + ret|=b->headptr[3]<<(24-b->headbit); + if(bits>32 && b->headbit) + ret|=b->headptr[4]<<(32-b->headbit); + } + } + } + } + + ret&=m; + return ret; +} + +/* limited to 32 at a time */ +void oggpack_adv(oggpack_buffer *b,int bits){ + bits+=b->headbit; + b->headbit=bits&7; + b->headptr+=bits/8; + if((b->headend-=bits/8)<1)_span(b); +} + +/* spans forward and finds next byte. Never halts */ +static void _span_one(oggpack_buffer *b){ + while(b->headend<1){ + if(b->head->next){ + b->count+=b->head->length; + b->head=b->head->next; + b->headptr=b->head->buffer->data+b->head->begin; + b->headend=b->head->length; + }else + break; + } +} + +static int _halt_one(oggpack_buffer *b){ + if(b->headend<1){ + _adv_halt(b); + return -1; + } + return 0; +} + +int oggpack_eop(oggpack_buffer *b){ + if(b->headend<0)return -1; + return 0; +} + +/* bits <= 32 */ +long oggpack_read(oggpack_buffer *b,int bits){ + unsigned long m=mask[bits]; + ogg_uint32_t ret=-1; + + bits+=b->headbit; + + if(bits >= b->headend<<3){ + + if(b->headend<0)return -1; + + if(bits){ + if (_halt_one(b)) return -1; + ret=*b->headptr>>b->headbit; + + if(bits>=8){ + ++b->headptr; + --b->headend; + _span_one(b); + if(bits>8){ + if (_halt_one(b)) return -1; + ret|=*b->headptr<<(8-b->headbit); + + if(bits>=16){ + ++b->headptr; + --b->headend; + _span_one(b); + if(bits>16){ + if (_halt_one(b)) return -1; + ret|=*b->headptr<<(16-b->headbit); + + if(bits>=24){ + ++b->headptr; + --b->headend; + _span_one(b); + if(bits>24){ + if (_halt_one(b)) return -1; + ret|=*b->headptr<<(24-b->headbit); + + if(bits>=32){ + ++b->headptr; + --b->headend; + _span_one(b); + if(bits>32){ + if (_halt_one(b)) return -1; + if(b->headbit)ret|=*b->headptr<<(32-b->headbit); + + } + } + } + } + } + } + } + } + } + }else{ + + ret=b->headptr[0]>>b->headbit; + if(bits>8){ + ret|=b->headptr[1]<<(8-b->headbit); + if(bits>16){ + ret|=b->headptr[2]<<(16-b->headbit); + if(bits>24){ + ret|=b->headptr[3]<<(24-b->headbit); + if(bits>32 && b->headbit){ + ret|=b->headptr[4]<<(32-b->headbit); + } + } + } + } + + b->headptr+=bits/8; + b->headend-=bits/8; + } + + ret&=m; + b->headbit=bits&7; + return ret; +} + +long oggpack_bytes(oggpack_buffer *b){ + return(b->count+b->headptr-b->head->buffer->data-b->head->begin+ + (b->headbit+7)/8); +} + +long oggpack_bits(oggpack_buffer *b){ + return((b->count+b->headptr-b->head->buffer->data-b->head->begin)*8+ + b->headbit); +} + diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/block.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/block.c Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,453 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: PCM data vector blocking, windowing and dis/reassembly + + ********************************************************************/ + +#include +#include +#include +#include "ogg.h" +#include "ivorbiscodec.h" +#include "codec_internal.h" + +#include "window.h" +#include "registry.h" +#include "misc.h" + +static int ilog(unsigned int v){ + int ret=0; + if(v)--v; + while(v){ + ret++; + v>>=1; + } + return(ret); +} + +/* pcm accumulator examples (not exhaustive): + + <-------------- lW ----------------> + <--------------- W ----------------> +: .....|..... _______________ | +: .''' | '''_--- | |\ | +:.....''' |_____--- '''......| | \_______| +:.................|__________________|_______|__|______| + |<------ Sl ------>| > Sr < |endW + |beginSl |endSl | |endSr + |beginW |endlW |beginSr + + + |< lW >| + <--------------- W ----------------> + | | .. ______________ | + | | ' `/ | ---_ | + |___.'___/`. | ---_____| + |_______|__|_______|_________________| + | >|Sl|< |<------ Sr ----->|endW + | | |endSl |beginSr |endSr + |beginW | |endlW + mult[0] |beginSl mult[n] + + <-------------- lW -----------------> + |<--W-->| +: .............. ___ | | +: .''' |`/ \ | | +:.....''' |/`....\|...| +:.........................|___|___|___| + |Sl |Sr |endW + | | |endSr + | |beginSr + | |endSl + |beginSl + |beginW +*/ + +/* block abstraction setup *********************************************/ + +#ifndef WORD_ALIGN +#define WORD_ALIGN 8 +#endif + +int vorbis_block_init(vorbis_dsp_state *v, vorbis_block *vb){ + memset(vb,0,sizeof(*vb)); + vb->vd=v; + vb->localalloc=0; + vb->localstore=NULL; + + return(0); +} + +void *_vorbis_block_alloc(vorbis_block *vb,long bytes){ + bytes=(bytes+(WORD_ALIGN-1)) & ~(WORD_ALIGN-1); + if(bytes+vb->localtop>vb->localalloc){ + /* can't just _ogg_realloc... there are outstanding pointers */ + if(vb->localstore){ + struct alloc_chain *link=(struct alloc_chain *)_ogg_malloc(sizeof(*link)); + vb->totaluse+=vb->localtop; + link->next=vb->reap; + link->ptr=vb->localstore; + vb->reap=link; + } + /* highly conservative */ + vb->localalloc=bytes; + vb->localstore=_ogg_malloc(vb->localalloc); + vb->localtop=0; + } + { + void *ret=(void *)(((char *)vb->localstore)+vb->localtop); + vb->localtop+=bytes; + return ret; + } +} + +/* reap the chain, pull the ripcord */ +void _vorbis_block_ripcord(vorbis_block *vb){ + /* reap the chain */ + struct alloc_chain *reap=vb->reap; + while(reap){ + struct alloc_chain *next=reap->next; + _ogg_free(reap->ptr); + memset(reap,0,sizeof(*reap)); + _ogg_free(reap); + reap=next; + } + /* consolidate storage */ + if(vb->totaluse){ + vb->localstore=_ogg_realloc(vb->localstore,vb->totaluse+vb->localalloc); + vb->localalloc+=vb->totaluse; + vb->totaluse=0; + } + + /* pull the ripcord */ + vb->localtop=0; + vb->reap=NULL; +} + +int vorbis_block_clear(vorbis_block *vb){ + _vorbis_block_ripcord(vb); + if(vb->localstore)_ogg_free(vb->localstore); + + memset(vb,0,sizeof(*vb)); + return(0); +} + +static int _vds_init(vorbis_dsp_state *v,vorbis_info *vi){ + int i; + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + private_state *b=NULL; + + memset(v,0,sizeof(*v)); + b=(private_state *)(v->backend_state=_ogg_calloc(1,sizeof(*b))); + + v->vi=vi; + b->modebits=ilog(ci->modes); + + /* Vorbis I uses only window type 0 */ + b->window[0]=_vorbis_window(0,ci->blocksizes[0]/2); + b->window[1]=_vorbis_window(0,ci->blocksizes[1]/2); + + /* finish the codebooks */ + if(!ci->fullbooks){ + ci->fullbooks=(codebook *)_ogg_calloc(ci->books,sizeof(*ci->fullbooks)); + for(i=0;ibooks;i++){ + vorbis_book_init_decode(ci->fullbooks+i,ci->book_param[i]); + /* decode codebooks are now standalone after init */ + vorbis_staticbook_destroy(ci->book_param[i]); + ci->book_param[i]=NULL; + } + } + + v->pcm_storage=ci->blocksizes[1]; + v->pcm=(ogg_int32_t **)_ogg_malloc(vi->channels*sizeof(*v->pcm)); + v->pcmret=(ogg_int32_t **)_ogg_malloc(vi->channels*sizeof(*v->pcmret)); + for(i=0;ichannels;i++) + v->pcm[i]=(ogg_int32_t *)_ogg_calloc(v->pcm_storage,sizeof(*v->pcm[i])); + + /* all 1 (large block) or 0 (small block) */ + /* explicitly set for the sake of clarity */ + v->lW=0; /* previous window size */ + v->W=0; /* current window size */ + + /* initialize all the mapping/backend lookups */ + b->mode=(vorbis_look_mapping **)_ogg_calloc(ci->modes,sizeof(*b->mode)); + for(i=0;imodes;i++){ + int mapnum=ci->mode_param[i]->mapping; + int maptype=ci->map_type[mapnum]; + b->mode[i]=_mapping_P[maptype]->look(v,ci->mode_param[i], + ci->map_param[mapnum]); + } + return(0); +} + +int vorbis_synthesis_restart(vorbis_dsp_state *v){ + vorbis_info *vi=v->vi; + codec_setup_info *ci; + + if(!v->backend_state)return -1; + if(!vi)return -1; + ci=vi->codec_setup; + if(!ci)return -1; + + v->centerW=ci->blocksizes[1]/2; + v->pcm_current=v->centerW; + + v->pcm_returned=-1; + v->granulepos=-1; + v->sequence=-1; + ((private_state *)(v->backend_state))->sample_count=-1; + + return(0); +} + +int vorbis_synthesis_init(vorbis_dsp_state *v,vorbis_info *vi){ + _vds_init(v,vi); + vorbis_synthesis_restart(v); + + return(0); +} + +void vorbis_dsp_clear(vorbis_dsp_state *v){ + int i; + if(v){ + vorbis_info *vi=v->vi; + codec_setup_info *ci=(codec_setup_info *)(vi?vi->codec_setup:NULL); + private_state *b=(private_state *)v->backend_state; + + if(v->pcm){ + for(i=0;ichannels;i++) + if(v->pcm[i])_ogg_free(v->pcm[i]); + _ogg_free(v->pcm); + if(v->pcmret)_ogg_free(v->pcmret); + } + + /* free mode lookups; these are actually vorbis_look_mapping structs */ + if(ci){ + for(i=0;imodes;i++){ + int mapnum=ci->mode_param[i]->mapping; + int maptype=ci->map_type[mapnum]; + if(b && b->mode)_mapping_P[maptype]->free_look(b->mode[i]); + } + } + + if(b){ + if(b->mode)_ogg_free(b->mode); + _ogg_free(b); + } + + memset(v,0,sizeof(*v)); + } +} + +/* Unlike in analysis, the window is only partially applied for each + block. The time domain envelope is not yet handled at the point of + calling (as it relies on the previous block). */ + +int vorbis_synthesis_blockin(vorbis_dsp_state *v,vorbis_block *vb){ + vorbis_info *vi=v->vi; + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + private_state *b=v->backend_state; + int i,j; + + if(v->pcm_current>v->pcm_returned && v->pcm_returned!=-1)return(OV_EINVAL); + + v->lW=v->W; + v->W=vb->W; + v->nW=-1; + + if((v->sequence==-1)|| + (v->sequence+1 != vb->sequence)){ + v->granulepos=-1; /* out of sequence; lose count */ + b->sample_count=-1; + } + + v->sequence=vb->sequence; + + if(vb->pcm){ /* no pcm to process if vorbis_synthesis_trackonly + was called on block */ + int n=ci->blocksizes[v->W]/2; + int n0=ci->blocksizes[0]/2; + int n1=ci->blocksizes[1]/2; + + int thisCenter; + int prevCenter; + + if(v->centerW){ + thisCenter=n1; + prevCenter=0; + }else{ + thisCenter=0; + prevCenter=n1; + } + + /* v->pcm is now used like a two-stage double buffer. We don't want + to have to constantly shift *or* adjust memory usage. Don't + accept a new block until the old is shifted out */ + + /* overlap/add PCM */ + + for(j=0;jchannels;j++){ + /* the overlap/add section */ + if(v->lW){ + if(v->W){ + /* large/large */ + ogg_int32_t *pcm=v->pcm[j]+prevCenter; + ogg_int32_t *p=vb->pcm[j]; + for(i=0;ipcm[j]+prevCenter+n1/2-n0/2; + ogg_int32_t *p=vb->pcm[j]; + for(i=0;iW){ + /* small/large */ + ogg_int32_t *pcm=v->pcm[j]+prevCenter; + ogg_int32_t *p=vb->pcm[j]+n1/2-n0/2; + for(i=0;ipcm[j]+prevCenter; + ogg_int32_t *p=vb->pcm[j]; + for(i=0;ipcm[j]+thisCenter; + ogg_int32_t *p=vb->pcm[j]+n; + for(i=0;icenterW) + v->centerW=0; + else + v->centerW=n1; + + /* deal with initial packet state; we do this using the explicit + pcm_returned==-1 flag otherwise we're sensitive to first block + being short or long */ + + if(v->pcm_returned==-1){ + v->pcm_returned=thisCenter; + v->pcm_current=thisCenter; + }else{ + v->pcm_returned=prevCenter; + v->pcm_current=prevCenter+ + ci->blocksizes[v->lW]/4+ + ci->blocksizes[v->W]/4; + } + + } + + /* track the frame number... This is for convenience, but also + making sure our last packet doesn't end with added padding. If + the last packet is partial, the number of samples we'll have to + return will be past the vb->granulepos. + + This is not foolproof! It will be confused if we begin + decoding at the last page after a seek or hole. In that case, + we don't have a starting point to judge where the last frame + is. For this reason, vorbisfile will always try to make sure + it reads the last two marked pages in proper sequence */ + + if(b->sample_count==-1){ + b->sample_count=0; + }else{ + b->sample_count+=ci->blocksizes[v->lW]/4+ci->blocksizes[v->W]/4; + } + + if(v->granulepos==-1){ + if(vb->granulepos!=-1){ /* only set if we have a position to set to */ + + v->granulepos=vb->granulepos; + + /* is this a short page? */ + if(b->sample_count>v->granulepos){ + /* corner case; if this is both the first and last audio page, + then spec says the end is cut, not beginning */ + if(vb->eofflag){ + /* trim the end */ + /* no preceeding granulepos; assume we started at zero (we'd + have to in a short single-page stream) */ + /* granulepos could be -1 due to a seek, but that would result + in a long coun`t, not short count */ + + v->pcm_current-=(b->sample_count-v->granulepos); + }else{ + /* trim the beginning */ + v->pcm_returned+=(b->sample_count-v->granulepos); + if(v->pcm_returned>v->pcm_current) + v->pcm_returned=v->pcm_current; + } + + } + + } + }else{ + v->granulepos+=ci->blocksizes[v->lW]/4+ci->blocksizes[v->W]/4; + if(vb->granulepos!=-1 && v->granulepos!=vb->granulepos){ + + if(v->granulepos>vb->granulepos){ + long extra=v->granulepos-vb->granulepos; + + if(extra) + if(vb->eofflag){ + /* partial last frame. Strip the extra samples off */ + v->pcm_current-=extra; + } /* else {Shouldn't happen *unless* the bitstream is out of + spec. Either way, believe the bitstream } */ + } /* else {Shouldn't happen *unless* the bitstream is out of + spec. Either way, believe the bitstream } */ + v->granulepos=vb->granulepos; + } + } + + /* Update, cleanup */ + + if(vb->eofflag)v->eofflag=1; + return(0); +} + +/* pcm==NULL indicates we just want the pending samples, no more */ +int vorbis_synthesis_pcmout(vorbis_dsp_state *v,ogg_int32_t ***pcm){ + vorbis_info *vi=v->vi; + if(v->pcm_returned>-1 && v->pcm_returnedpcm_current){ + if(pcm){ + int i; + for(i=0;ichannels;i++) + v->pcmret[i]=v->pcm[i]+v->pcm_returned; + *pcm=v->pcmret; + } + return(v->pcm_current-v->pcm_returned); + } + return(0); +} + +int vorbis_synthesis_read(vorbis_dsp_state *v,int bytes){ + if(bytes && v->pcm_returned+bytes>v->pcm_current)return(OV_EINVAL); + v->pcm_returned+=bytes; + return(0); +} + diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/block.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/block.h Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,26 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2008 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: shared block functions + + ********************************************************************/ + +#ifndef _V_BLOCK_ +#define _V_BLOCK_ + +#include "ivorbiscodec.h" + +extern void _vorbis_block_ripcord(vorbis_block *vb); +extern void *_vorbis_block_alloc(vorbis_block *vb,long bytes); + +#endif diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/codebook.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/codebook.c Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,371 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: basic codebook pack/unpack/code/decode operations + + ********************************************************************/ + +#include +#include +#include +#include "ogg.h" +#include "ivorbiscodec.h" +#include "codebook.h" +#include "misc.h" + +/* unpacks a codebook from the packet buffer into the codebook struct, + readies the codebook auxiliary structures for decode *************/ +int vorbis_staticbook_unpack(oggpack_buffer *opb,static_codebook *s){ + long i,j; + memset(s,0,sizeof(*s)); + + /* make sure alignment is correct */ + if(oggpack_read(opb,24)!=0x564342)goto _eofout; + + /* first the basic parameters */ + s->dim=oggpack_read(opb,16); + s->entries=oggpack_read(opb,24); + if(s->entries==-1)goto _eofout; + + /* codeword ordering.... length ordered or unordered? */ + switch((int)oggpack_read(opb,1)){ + case 0: + /* unordered */ + s->lengthlist=(long *)_ogg_malloc(sizeof(*s->lengthlist)*s->entries); + + /* allocated but unused entries? */ + if(oggpack_read(opb,1)){ + /* yes, unused entries */ + + for(i=0;ientries;i++){ + if(oggpack_read(opb,1)){ + long num=oggpack_read(opb,5); + if(num==-1)goto _eofout; + s->lengthlist[i]=num+1; + }else + s->lengthlist[i]=0; + } + }else{ + /* all entries used; no tagging */ + for(i=0;ientries;i++){ + long num=oggpack_read(opb,5); + if(num==-1)goto _eofout; + s->lengthlist[i]=num+1; + } + } + + break; + case 1: + /* ordered */ + { + long length=oggpack_read(opb,5)+1; + s->lengthlist=(long *)_ogg_malloc(sizeof(*s->lengthlist)*s->entries); + + for(i=0;ientries;){ + long num=oggpack_read(opb,_ilog(s->entries-i)); + if(num==-1)goto _eofout; + for(j=0;jentries;j++,i++) + s->lengthlist[i]=length; + length++; + } + } + break; + default: + /* EOF */ + return(-1); + } + + /* Do we have a mapping to unpack? */ + switch((s->maptype=oggpack_read(opb,4))){ + case 0: + /* no mapping */ + break; + case 1: case 2: + /* implicitly populated value mapping */ + /* explicitly populated value mapping */ + + s->q_min=oggpack_read(opb,32); + s->q_delta=oggpack_read(opb,32); + s->q_quant=oggpack_read(opb,4)+1; + s->q_sequencep=oggpack_read(opb,1); + + { + int quantvals=0; + switch(s->maptype){ + case 1: + quantvals=_book_maptype1_quantvals(s); + break; + case 2: + quantvals=s->entries*s->dim; + break; + } + + /* quantized values */ + s->quantlist=(long *)_ogg_malloc(sizeof(*s->quantlist)*quantvals); + for(i=0;iquantlist[i]=oggpack_read(opb,s->q_quant); + + if(quantvals&&s->quantlist[quantvals-1]==-1)goto _eofout; + } + break; + default: + goto _errout; + } + + /* all set */ + return(0); + + _errout: + _eofout: + vorbis_staticbook_clear(s); + return(-1); +} + +/* the 'eliminate the decode tree' optimization actually requires the + codewords to be MSb first, not LSb. This is an annoying inelegancy + (and one of the first places where carefully thought out design + turned out to be wrong; Vorbis II and future Ogg codecs should go + to an MSb bitpacker), but not actually the huge hit it appears to + be. The first-stage decode table catches most words so that + bitreverse is not in the main execution path. */ + +static ogg_uint32_t bitreverse(ogg_uint32_t x){ + x= ((x>>16)&0x0000ffff) | ((x<<16)&0xffff0000); + x= ((x>> 8)&0x00ff00ff) | ((x<< 8)&0xff00ff00); + x= ((x>> 4)&0x0f0f0f0f) | ((x<< 4)&0xf0f0f0f0); + x= ((x>> 2)&0x33333333) | ((x<< 2)&0xcccccccc); + return((x>> 1)&0x55555555) | ((x<< 1)&0xaaaaaaaa); +} + +STIN long decode_packed_entry_number(codebook *book, + oggpack_buffer *b){ + int read=book->dec_maxlength; + long lo,hi; + long lok = oggpack_look(b,book->dec_firsttablen); + + if (lok >= 0) { + long entry = book->dec_firsttable[lok]; + if(entry&0x80000000UL){ + lo=(entry>>15)&0x7fff; + hi=book->used_entries-(entry&0x7fff); + }else{ + oggpack_adv(b, book->dec_codelengths[entry-1]); + return(entry-1); + } + }else{ + lo=0; + hi=book->used_entries; + } + + lok = oggpack_look(b, read); + + while(lok<0 && read>1) + lok = oggpack_look(b, --read); + + if(lok<0){ + oggpack_adv(b,1); /* force eop */ + return -1; + } + + /* bisect search for the codeword in the ordered list */ + { + ogg_uint32_t testword=bitreverse((ogg_uint32_t)lok); + + while(hi-lo>1){ + long p=(hi-lo)>>1; + long test=book->codelist[lo+p]>testword; + lo+=p&(test-1); + hi-=p&(-test); + } + + if(book->dec_codelengths[lo]<=read){ + oggpack_adv(b, book->dec_codelengths[lo]); + return(lo); + } + } + + oggpack_adv(b, read+1); + return(-1); +} + +/* Decode side is specced and easier, because we don't need to find + matches using different criteria; we simply read and map. There are + two things we need to do 'depending': + + We may need to support interleave. We don't really, but it's + convenient to do it here rather than rebuild the vector later. + + Cascades may be additive or multiplicitive; this is not inherent in + the codebook, but set in the code using the codebook. Like + interleaving, it's easiest to do it here. + addmul==0 -> declarative (set the value) + addmul==1 -> additive + addmul==2 -> multiplicitive */ + +/* returns the [original, not compacted] entry number or -1 on eof *********/ +long vorbis_book_decode(codebook *book, oggpack_buffer *b){ + if(book->used_entries>0){ + long packed_entry=decode_packed_entry_number(book,b); + if(packed_entry>=0) + return(book->dec_index[packed_entry]); + } + + /* if there's no dec_index, the codebook unpacking isn't collapsed */ + return(-1); +} + +/* returns 0 on OK or -1 on eof *************************************/ +long vorbis_book_decodevs_add(codebook *book,ogg_int32_t *a, + oggpack_buffer *b,int n,int point){ + if(book->used_entries>0){ + int step=n/book->dim; + long *entry = (long *)alloca(sizeof(*entry)*step); + ogg_int32_t **t = (ogg_int32_t **)alloca(sizeof(*t)*step); + int i,j,o; + int shift=point-book->binarypoint; + + if(shift>=0){ + for (i = 0; i < step; i++) { + entry[i]=decode_packed_entry_number(book,b); + if(entry[i]==-1)return(-1); + t[i] = book->valuelist+entry[i]*book->dim; + } + for(i=0,o=0;idim;i++,o+=step) + for (j=0;j>shift; + }else{ + for (i = 0; i < step; i++) { + entry[i]=decode_packed_entry_number(book,b); + if(entry[i]==-1)return(-1); + t[i] = book->valuelist+entry[i]*book->dim; + } + for(i=0,o=0;idim;i++,o+=step) + for (j=0;jused_entries>0){ + int i,j,entry; + ogg_int32_t *t; + int shift=point-book->binarypoint; + + if(shift>=0){ + for(i=0;ivaluelist+entry*book->dim; + for (j=0;jdim;) + a[i++]+=t[j++]>>shift; + } + }else{ + for(i=0;ivaluelist+entry*book->dim; + for (j=0;jdim;) + a[i++]+=t[j++]<<-shift; + } + } + } + return(0); +} + +long vorbis_book_decodev_set(codebook *book,ogg_int32_t *a, + oggpack_buffer *b,int n,int point){ + if(book->used_entries>0){ + int i,j,entry; + ogg_int32_t *t; + int shift=point-book->binarypoint; + + if(shift>=0){ + + for(i=0;ivaluelist+entry*book->dim; + for (j=0;jdim;){ + a[i++]=t[j++]>>shift; + } + } + }else{ + + for(i=0;ivaluelist+entry*book->dim; + for (j=0;jdim;){ + a[i++]=t[j++]<<-shift; + } + } + } + }else{ + + int i,j; + for(i=0;idim;){ + a[i++]=0; + } + } + } + return(0); +} + +long vorbis_book_decodevv_add(codebook *book,ogg_int32_t **a,\ + long offset,int ch, + oggpack_buffer *b,int n,int point){ + if(book->used_entries>0){ + long i,j,entry; + int chptr=0; + int shift=point-book->binarypoint; + + if(shift>=0){ + + for(i=offset;ivaluelist+entry*book->dim; + for (j=0;jdim;j++){ + a[chptr++][i]+=t[j]>>shift; + if(chptr==ch){ + chptr=0; + i++; + } + } + } + } + }else{ + + for(i=offset;ivaluelist+entry*book->dim; + for (j=0;jdim;j++){ + a[chptr++][i]+=t[j]<<-shift; + if(chptr==ch){ + chptr=0; + i++; + } + } + } + } + } + } + return(0); +} diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/codebook.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/codebook.h Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,102 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: basic shared codebook operations + + ********************************************************************/ + +#ifndef _V_CODEBOOK_H_ +#define _V_CODEBOOK_H_ + +#include "ogg.h" + +/* This structure encapsulates huffman and VQ style encoding books; it + doesn't do anything specific to either. + + valuelist/quantlist are nonNULL (and q_* significant) only if + there's entry->value mapping to be done. + + If encode-side mapping must be done (and thus the entry needs to be + hunted), the auxiliary encode pointer will point to a decision + tree. This is true of both VQ and huffman, but is mostly useful + with VQ. + +*/ + +typedef struct static_codebook{ + long dim; /* codebook dimensions (elements per vector) */ + long entries; /* codebook entries */ + long *lengthlist; /* codeword lengths in bits */ + + /* mapping ***************************************************************/ + int maptype; /* 0=none + 1=implicitly populated values from map column + 2=listed arbitrary values */ + + /* The below does a linear, single monotonic sequence mapping. */ + long q_min; /* packed 32 bit float; quant value 0 maps to minval */ + long q_delta; /* packed 32 bit float; val 1 - val 0 == delta */ + int q_quant; /* bits: 0 < quant <= 16 */ + int q_sequencep; /* bitflag */ + + long *quantlist; /* map == 1: (int)(entries^(1/dim)) element column map + map == 2: list of dim*entries quantized entry vals + */ +} static_codebook; + +typedef struct codebook{ + long dim; /* codebook dimensions (elements per vector) */ + long entries; /* codebook entries */ + long used_entries; /* populated codebook entries */ + + /* the below are ordered by bitreversed codeword and only used + entries are populated */ + int binarypoint; + ogg_int32_t *valuelist; /* list of dim*entries actual entry values */ + ogg_uint32_t *codelist; /* list of bitstream codewords for each entry */ + + int *dec_index; + char *dec_codelengths; + ogg_uint32_t *dec_firsttable; + int dec_firsttablen; + int dec_maxlength; + + long q_min; /* packed 32 bit float; quant value 0 maps to minval */ + long q_delta; /* packed 32 bit float; val 1 - val 0 == delta */ + +} codebook; + +extern void vorbis_staticbook_clear(static_codebook *b); +extern void vorbis_staticbook_destroy(static_codebook *b); +extern int vorbis_book_init_decode(codebook *dest,const static_codebook *source); + +extern void vorbis_book_clear(codebook *b); +extern long _book_maptype1_quantvals(const static_codebook *b); + +extern int vorbis_staticbook_unpack(oggpack_buffer *b,static_codebook *c); + +extern long vorbis_book_decode(codebook *book, oggpack_buffer *b); +extern long vorbis_book_decodevs_add(codebook *book, ogg_int32_t *a, + oggpack_buffer *b,int n,int point); +extern long vorbis_book_decodev_set(codebook *book, ogg_int32_t *a, + oggpack_buffer *b,int n,int point); +extern long vorbis_book_decodev_add(codebook *book, ogg_int32_t *a, + oggpack_buffer *b,int n,int point); +extern long vorbis_book_decodevv_add(codebook *book, ogg_int32_t **a, + long off,int ch, + oggpack_buffer *b,int n,int point); + +extern int _ilog(unsigned int v); + + +#endif diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/codec_internal.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/codec_internal.h Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,92 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: libvorbis codec headers + + ********************************************************************/ + +#ifndef _V_CODECI_H_ +#define _V_CODECI_H_ + +#include "codebook.h" + +typedef void vorbis_look_mapping; +typedef void vorbis_look_floor; +typedef void vorbis_look_residue; +typedef void vorbis_look_transform; + +/* mode ************************************************************/ +typedef struct { + int blockflag; + int windowtype; + int transformtype; + int mapping; +} vorbis_info_mode; + +typedef void vorbis_info_floor; +typedef void vorbis_info_residue; +typedef void vorbis_info_mapping; + +typedef struct private_state { + /* local lookup storage */ + const void *window[2]; + + /* backend lookups are tied to the mode, not the backend or naked mapping */ + int modebits; + vorbis_look_mapping **mode; + + ogg_int64_t sample_count; + +} private_state; + +/* codec_setup_info contains all the setup information specific to the + specific compression/decompression mode in progress (eg, + psychoacoustic settings, channel setup, options, codebook + etc). +*********************************************************************/ + +typedef struct codec_setup_info { + + /* Vorbis supports only short and long blocks, but allows the + encoder to choose the sizes */ + + long blocksizes[2]; + + /* modes are the primary means of supporting on-the-fly different + blocksizes, different channel mappings (LR or M/A), + different residue backends, etc. Each mode consists of a + blocksize flag and a mapping (along with the mapping setup */ + + int modes; + int maps; + int times; + int floors; + int residues; + int books; + + vorbis_info_mode *mode_param[64]; + int map_type[64]; + vorbis_info_mapping *map_param[64]; + int time_type[64]; + int floor_type[64]; + vorbis_info_floor *floor_param[64]; + int residue_type[64]; + vorbis_info_residue *residue_param[64]; + static_codebook *book_param[256]; + codebook *fullbooks; + + int passlimit[32]; /* iteration limit per couple/quant pass */ + int coupling_passes; +} codec_setup_info; + +#endif diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/config_types.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/config_types.h Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,25 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: #ifdef jail to whip a few platforms into the UNIX ideal. + + ********************************************************************/ +#ifndef _OS_CVTYPES_H +#define _OS_CVTYPES_H + +typedef long long ogg_int64_t; +typedef int ogg_int32_t; +typedef unsigned int ogg_uint32_t; +typedef short ogg_int16_t; + +#endif diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/configure.in --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/configure.in Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,131 @@ +dnl Process this file with autoconf to produce a configure script + +dnl ------------------------------------------------ +dnl Initialization and Versioning +dnl ------------------------------------------------ + +AC_INIT(mdct.c) + +AC_CANONICAL_HOST +AC_CANONICAL_TARGET + +AM_CONFIG_HEADER([config.h]) + +AM_INIT_AUTOMAKE(libvorbisidec,1.2.0) + +dnl Library versioning + +V_LIB_CURRENT=1 +V_LIB_REVISION=2 +V_LIB_AGE=0 +AC_SUBST(V_LIB_CURRENT) +AC_SUBST(V_LIB_REVISION) +AC_SUBST(V_LIB_AGE) + +dnl -------------------------------------------------- +dnl Check for programs +dnl -------------------------------------------------- + +dnl save $CFLAGS since AC_PROG_CC likes to insert "-g -O2" +dnl if $CFLAGS is blank +cflags_save="$CFLAGS" +AC_PROG_CC +AC_PROG_CPP +CFLAGS="$cflags_save" + +AM_PROG_LIBTOOL + +dnl -------------------------------------------------- +dnl Set build flags based on environment +dnl -------------------------------------------------- + +dnl Set some target options + +cflags_save="$CFLAGS" +ldflags_save="$LDFLAGS" +if test -z "$GCC"; then + case $host in + arm-*-*) + DEBUG="-g -D_ARM_ASSEM_" + CFLAGS="-O -D_ARM_ASSEM_" + PROFILE="-p -g -O -D_ARM_ASSEM_" ;; + *) + DEBUG="-g" + CFLAGS="-O" + PROFILE="-g -p" ;; + esac +else + + case $host in + arm-*-*) + DEBUG="-g -Wall -D__NO_MATH_INLINES -fsigned-char -D_ARM_ASSEM_" + CFLAGS="-O2 -D_ARM_ASSEM_ -fsigned-char" + PROFILE="-W -pg -g -O2 -D_ARM_ASSEM_ -fsigned-char -fno-inline-functions";; + + *) + DEBUG="-g -Wall -D__NO_MATH_INLINES -fsigned-char" + CFLAGS="-O2 -Wall -fsigned-char" + PROFILE="-Wall -pg -g -O2 -fsigned-char -fno-inline-functions";; + esac +fi +CFLAGS="$CFLAGS $cflags_save -D_REENTRANT" +LDFLAGS="$LDFLAGS $ldflags_save" + + +# Test whenever ld supports -version-script +AC_PROG_LD +AC_PROG_LD_GNU +if test "x$lt_cv_prog_gnu_ld" = "xyes"; then + SHLIB_VERSION_ARG="Wl,--version-script=Version_script" + + dnl Set extra linker options + case "$target_os" in + linux* | solaris* ) + SHLIB_VERSION_ARG="-Wl,--version-script=Version_script" + ;; + *) + ;; + esac + LDFLAGS="$LDFLAGS $SHLIB_VERSION_ARG" +fi + +dnl -------------------------------------------------- +dnl Options +dnl -------------------------------------------------- + +AC_ARG_ENABLE( + low-accuracy, + [ --enable-low-accuracy enable 32 bit only multiply operations], + CFLAGS="$CFLAGS -D_LOW_ACCURACY_" +) + +dnl -------------------------------------------------- +dnl Check for headers +dnl -------------------------------------------------- + +AC_CHECK_HEADER(memory.h,CFLAGS="$CFLAGS -DUSE_MEMORY_H",:) + +dnl -------------------------------------------------- +dnl Check for typedefs, structures, etc +dnl -------------------------------------------------- + +dnl none + +dnl -------------------------------------------------- +dnl Check for library functions +dnl -------------------------------------------------- + +AC_FUNC_ALLOCA +AC_FUNC_MEMCMP + +dnl -------------------------------------------------- +dnl Do substitutions +dnl -------------------------------------------------- + +LIBS="$LIBS" + +AC_SUBST(LIBS) +AC_SUBST(DEBUG) +AC_SUBST(PROFILE) + +AC_OUTPUT(Makefile Version_script) diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/floor0.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/floor0.c Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,435 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: floor backend 0 implementation + + ********************************************************************/ + +#include +#include +#include +#include "ogg.h" +#include "ivorbiscodec.h" +#include "codec_internal.h" +#include "registry.h" +#include "codebook.h" +#include "misc.h" +#include "block.h" + +#define LSP_FRACBITS 14 + +typedef struct { + long n; + int ln; + int m; + int *linearmap; + + vorbis_info_floor0 *vi; + ogg_int32_t *lsp_look; + +} vorbis_look_floor0; + +/*************** LSP decode ********************/ + +#include "lsp_lookup.h" + +/* interpolated 1./sqrt(p) where .5 <= a < 1. (.100000... to .111111...) in + 16.16 format + returns in m.8 format */ + +static long ADJUST_SQRT2[2]={8192,5792}; +STIN ogg_int32_t vorbis_invsqlook_i(long a,long e){ + long i=(a&0x7fff)>>(INVSQ_LOOKUP_I_SHIFT-1); + long d=a&INVSQ_LOOKUP_I_MASK; /* 0.10 */ + long val=INVSQ_LOOKUP_I[i]- /* 1.16 */ + ((INVSQ_LOOKUP_IDel[i]*d)>>INVSQ_LOOKUP_I_SHIFT); /* result 1.16 */ + val*=ADJUST_SQRT2[e&1]; + e=(e>>1)+21; + return(val>>e); +} + +/* interpolated lookup based fromdB function, domain -140dB to 0dB only */ +/* a is in n.12 format */ +STIN ogg_int32_t vorbis_fromdBlook_i(long a){ + int i=(-a)>>(12-FROMdB2_SHIFT); + if(i<0) return 0x7fffffff; + if(i>=(FROMdB_LOOKUP_SZ<>FROMdB_SHIFT] * FROMdB2_LOOKUP[i&FROMdB2_MASK]; +} + +/* interpolated lookup based cos function, domain 0 to PI only */ +/* a is in 0.16 format, where 0==0, 2^^16-1==PI, return 0.14 */ +STIN ogg_int32_t vorbis_coslook_i(long a){ + int i=a>>COS_LOOKUP_I_SHIFT; + int d=a&COS_LOOKUP_I_MASK; + return COS_LOOKUP_I[i]- ((d*(COS_LOOKUP_I[i]-COS_LOOKUP_I[i+1]))>> + COS_LOOKUP_I_SHIFT); +} + +/* interpolated lookup based cos function */ +/* a is in 0.16 format, where 0==0, 2^^16==PI, return .LSP_FRACBITS */ +STIN ogg_int32_t vorbis_coslook2_i(long a){ + a=a&0x1ffff; + + if(a>0x10000)a=0x20000-a; + { + int i=a>>COS_LOOKUP_I_SHIFT; + int d=a&COS_LOOKUP_I_MASK; + a=((COS_LOOKUP_I[i]<> + (COS_LOOKUP_I_SHIFT-LSP_FRACBITS+14); + } + + return(a); +} + +static const int barklook[28]={ + 0,100,200,301, 405,516,635,766, + 912,1077,1263,1476, 1720,2003,2333,2721, + 3184,3742,4428,5285, 6376,7791,9662,12181, + 15624,20397,27087,36554 +}; + +/* used in init only; interpolate the long way */ +STIN ogg_int32_t toBARK(int n){ + int i; + for(i=0;i<27;i++) + if(n>=barklook[i] && n>10)*0x517d)>>14; +#endif + + /* safeguard against a malicious stream */ + if(val<0 || (val>>COS_LOOKUP_I_SHIFT)>=COS_LOOKUP_I_SZ){ + memset(curve,0,sizeof(*curve)*n); + return; + } + + ilsp[i]=vorbis_coslook_i(val); + } + + i=0; + while(i>16); + qi=((qi*qi)>>16); + + if(m&1){ + qexp= qexp*2-28*((m+1)>>1)+m; + pi*=(1<<14)-((wi*wi)>>14); + qi+=pi>>14; + }else{ + qexp= qexp*2-13*m; + + pi*=(1<<14)-wi; + qi*=(1<<14)+wi; + + qi=(qi+pi)>>14; + } + + if(qi&0xffff0000){ /* checks for 1.xxxxxxxxxxxxxxxx */ + qi>>=1; qexp++; + }else + lsp_norm_asm(&qi,&qexp); + +#else + + qi*=labs(ilsp[0]-wi); + pi*=labs(ilsp[1]-wi); + + for(j=3;j>25])) + if(!(shift=MLOOP_2[(pi|qi)>>19])) + shift=MLOOP_3[(pi|qi)>>16]; + qi=(qi>>shift)*labs(ilsp[j-1]-wi); + pi=(pi>>shift)*labs(ilsp[j]-wi); + qexp+=shift; + } + if(!(shift=MLOOP_1[(pi|qi)>>25])) + if(!(shift=MLOOP_2[(pi|qi)>>19])) + shift=MLOOP_3[(pi|qi)>>16]; + + /* pi,qi normalized collectively, both tracked using qexp */ + + if(m&1){ + /* odd order filter; slightly assymetric */ + /* the last coefficient */ + qi=(qi>>shift)*labs(ilsp[j-1]-wi); + pi=(pi>>shift)<<14; + qexp+=shift; + + if(!(shift=MLOOP_1[(pi|qi)>>25])) + if(!(shift=MLOOP_2[(pi|qi)>>19])) + shift=MLOOP_3[(pi|qi)>>16]; + + pi>>=shift; + qi>>=shift; + qexp+=shift-14*((m+1)>>1); + + pi=((pi*pi)>>16); + qi=((qi*qi)>>16); + qexp=qexp*2+m; + + pi*=(1<<14)-((wi*wi)>>14); + qi+=pi>>14; + + }else{ + /* even order filter; still symmetric */ + + /* p*=p(1-w), q*=q(1+w), let normalization drift because it isn't + worth tracking step by step */ + + pi>>=shift; + qi>>=shift; + qexp+=shift-7*m; + + pi=((pi*pi)>>16); + qi=((qi*qi)>>16); + qexp=qexp*2+m; + + pi*=(1<<14)-wi; + qi*=(1<<14)+wi; + qi=(qi+pi)>>14; + + } + + + /* we've let the normalization drift because it wasn't important; + however, for the lookup, things must be normalized again. We + need at most one right shift or a number of left shifts */ + + if(qi&0xffff0000){ /* checks for 1.xxxxxxxxxxxxxxxx */ + qi>>=1; qexp++; + }else + while(qi && !(qi&0x8000)){ /* checks for 0.0xxxxxxxxxxxxxxx or less*/ + qi<<=1; qexp--; + } + +#endif + + amp=vorbis_fromdBlook_i(ampi* /* n.4 */ + vorbis_invsqlook_i(qi,qexp)- + /* m.8, m+n<=8 */ + ampoffseti); /* 8.12[0] */ + +#ifdef _LOW_ACCURACY_ + amp>>=9; +#endif + curve[i]= MULT31_SHIFT15(curve[i],amp); + while(map[++i]==k) curve[i]= MULT31_SHIFT15(curve[i],amp); + } +} + +/*************** vorbis decode glue ************/ + +static void floor0_free_info(vorbis_info_floor *i){ + vorbis_info_floor0 *info=(vorbis_info_floor0 *)i; + if(info){ + memset(info,0,sizeof(*info)); + _ogg_free(info); + } +} + +static void floor0_free_look(vorbis_look_floor *i){ + vorbis_look_floor0 *look=(vorbis_look_floor0 *)i; + if(look){ + + if(look->linearmap)_ogg_free(look->linearmap); + if(look->lsp_look)_ogg_free(look->lsp_look); + memset(look,0,sizeof(*look)); + _ogg_free(look); + } +} + +static vorbis_info_floor *floor0_unpack (vorbis_info *vi,oggpack_buffer *opb){ + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + int j; + + vorbis_info_floor0 *info=(vorbis_info_floor0 *)_ogg_malloc(sizeof(*info)); + info->order=oggpack_read(opb,8); + info->rate=oggpack_read(opb,16); + info->barkmap=oggpack_read(opb,16); + info->ampbits=oggpack_read(opb,6); + info->ampdB=oggpack_read(opb,8); + info->numbooks=oggpack_read(opb,4)+1; + + if(info->order<1)goto err_out; + if(info->rate<1)goto err_out; + if(info->barkmap<1)goto err_out; + if(info->numbooks<1)goto err_out; + + for(j=0;jnumbooks;j++){ + info->books[j]=oggpack_read(opb,8); + if(info->books[j]<0 || info->books[j]>=ci->books)goto err_out; + } + return(info); + + err_out: + floor0_free_info(info); + return(NULL); +} + +/* initialize Bark scale and normalization lookups. We could do this + with static tables, but Vorbis allows a number of possible + combinations, so it's best to do it computationally. + + The below is authoritative in terms of defining scale mapping. + Note that the scale depends on the sampling rate as well as the + linear block and mapping sizes */ + +static vorbis_look_floor *floor0_look (vorbis_dsp_state *vd,vorbis_info_mode *mi, + vorbis_info_floor *i){ + int j; + vorbis_info *vi=vd->vi; + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + vorbis_info_floor0 *info=(vorbis_info_floor0 *)i; + vorbis_look_floor0 *look=(vorbis_look_floor0 *)_ogg_calloc(1,sizeof(*look)); + look->m=info->order; + look->n=ci->blocksizes[mi->blockflag]/2; + look->ln=info->barkmap; + look->vi=info; + + /* the mapping from a linear scale to a smaller bark scale is + straightforward. We do *not* make sure that the linear mapping + does not skip bark-scale bins; the decoder simply skips them and + the encoder may do what it wishes in filling them. They're + necessary in some mapping combinations to keep the scale spacing + accurate */ + look->linearmap=(int *)_ogg_malloc((look->n+1)*sizeof(*look->linearmap)); + for(j=0;jn;j++){ + + int val=(look->ln* + ((toBARK(info->rate/2*j/look->n)<<11)/toBARK(info->rate/2)))>>11; + + if(val>=look->ln)val=look->ln-1; /* guard against the approximation */ + look->linearmap[j]=val; + } + look->linearmap[j]=-1; + + look->lsp_look=(ogg_int32_t *)_ogg_malloc(look->ln*sizeof(*look->lsp_look)); + for(j=0;jln;j++) + look->lsp_look[j]=vorbis_coslook2_i(0x10000*j/look->ln); + + return look; +} + +static void *floor0_inverse1(vorbis_block *vb,vorbis_look_floor *i){ + vorbis_look_floor0 *look=(vorbis_look_floor0 *)i; + vorbis_info_floor0 *info=look->vi; + int j,k; + + int ampraw=oggpack_read(&vb->opb,info->ampbits); + if(ampraw>0){ /* also handles the -1 out of data case */ + long maxval=(1<ampbits)-1; + int amp=((ampraw*info->ampdB)<<4)/maxval; + int booknum=oggpack_read(&vb->opb,_ilog(info->numbooks)); + + if(booknum!=-1 && booknumnumbooks){ /* be paranoid */ + codec_setup_info *ci=(codec_setup_info *)vb->vd->vi->codec_setup; + codebook *b=ci->fullbooks+info->books[booknum]; + ogg_int32_t last=0; + ogg_int32_t *lsp=(ogg_int32_t *)_vorbis_block_alloc(vb,sizeof(*lsp)*(look->m+1)); + + for(j=0;jm;j+=b->dim) + if(vorbis_book_decodev_set(b,lsp+j,&vb->opb,b->dim,-24)==-1)goto eop; + for(j=0;jm;){ + for(k=0;kdim;k++,j++)lsp[j]+=last; + last=lsp[j-1]; + } + + lsp[look->m]=amp; + return(lsp); + } + } + eop: + return(NULL); +} + +static int floor0_inverse2(vorbis_block *vb,vorbis_look_floor *i, + void *memo,ogg_int32_t *out){ + vorbis_look_floor0 *look=(vorbis_look_floor0 *)i; + vorbis_info_floor0 *info=look->vi; + + if(memo){ + ogg_int32_t *lsp=(ogg_int32_t *)memo; + ogg_int32_t amp=lsp[look->m]; + + /* take the coefficients back to a spectral envelope curve */ + vorbis_lsp_to_curve(out,look->linearmap,look->n,look->ln, + lsp,look->m,amp,info->ampdB,look->lsp_look); + return(1); + } + memset(out,0,sizeof(*out)*look->n); + return(0); +} + +/* export hooks */ +vorbis_func_floor floor0_exportbundle={ + &floor0_unpack,&floor0_look,&floor0_free_info, + &floor0_free_look,&floor0_inverse1,&floor0_inverse2 +}; + + diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/floor1.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/floor1.c Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,441 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: floor backend 1 implementation + + ********************************************************************/ + +#include +#include +#include +#include "ogg.h" +#include "ivorbiscodec.h" +#include "codec_internal.h" +#include "registry.h" +#include "codebook.h" +#include "misc.h" +#include "block.h" + +#define floor1_rangedB 140 /* floor 1 fixed at -140dB to 0dB range */ + +typedef struct { + int forward_index[VIF_POSIT+2]; + + int hineighbor[VIF_POSIT]; + int loneighbor[VIF_POSIT]; + int posts; + + int n; + int quant_q; + vorbis_info_floor1 *vi; + +} vorbis_look_floor1; + +/***********************************************/ + +static void floor1_free_info(vorbis_info_floor *i){ + vorbis_info_floor1 *info=(vorbis_info_floor1 *)i; + if(info){ + memset(info,0,sizeof(*info)); + _ogg_free(info); + } +} + +static void floor1_free_look(vorbis_look_floor *i){ + vorbis_look_floor1 *look=(vorbis_look_floor1 *)i; + if(look){ + memset(look,0,sizeof(*look)); + _ogg_free(look); + } +} + +static int ilog(unsigned int v){ + int ret=0; + while(v){ + ret++; + v>>=1; + } + return(ret); +} + +static vorbis_info_floor *floor1_unpack (vorbis_info *vi,oggpack_buffer *opb){ + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + int j,k,count=0,maxclass=-1,rangebits; + + vorbis_info_floor1 *info=(vorbis_info_floor1 *)_ogg_calloc(1,sizeof(*info)); + /* read partitions */ + info->partitions=oggpack_read(opb,5); /* only 0 to 31 legal */ + for(j=0;jpartitions;j++){ + info->partitionclass[j]=oggpack_read(opb,4); /* only 0 to 15 legal */ + if(maxclasspartitionclass[j])maxclass=info->partitionclass[j]; + } + + /* read partition classes */ + for(j=0;jclass_dim[j]=oggpack_read(opb,3)+1; /* 1 to 8 */ + info->class_subs[j]=oggpack_read(opb,2); /* 0,1,2,3 bits */ + if(info->class_subs[j]<0) + goto err_out; + if(info->class_subs[j])info->class_book[j]=oggpack_read(opb,8); + if(info->class_book[j]<0 || info->class_book[j]>=ci->books) + goto err_out; + for(k=0;k<(1<class_subs[j]);k++){ + info->class_subbook[j][k]=oggpack_read(opb,8)-1; + if(info->class_subbook[j][k]<-1 || info->class_subbook[j][k]>=ci->books) + goto err_out; + } + } + + /* read the post list */ + info->mult=oggpack_read(opb,2)+1; /* only 1,2,3,4 legal now */ + rangebits=oggpack_read(opb,4); + + for(j=0,k=0;jpartitions;j++){ + count+=info->class_dim[info->partitionclass[j]]; + for(;kpostlist[k+2]=oggpack_read(opb,rangebits); + if(t<0 || t>=(1<postlist[0]=0; + info->postlist[1]=1<vi=info; + look->n=info->postlist[1]; + + /* we drop each position value in-between already decoded values, + and use linear interpolation to predict each new value past the + edges. The positions are read in the order of the position + list... we precompute the bounding positions in the lookup. Of + course, the neighbors can change (if a position is declined), but + this is an initial mapping */ + + for(i=0;ipartitions;i++)n+=info->class_dim[info->partitionclass[i]]; + n+=2; + look->posts=n; + + /* also store a sorted position index */ + for(i=0;ipostlist+i; + qsort(sortpointer,n,sizeof(*sortpointer),icomp); + + /* points from sort order back to range number */ + for(i=0;iforward_index[i]=sortpointer[i]-info->postlist; + + /* quantize values to multiplier spec */ + switch(info->mult){ + case 1: /* 1024 -> 256 */ + look->quant_q=256; + break; + case 2: /* 1024 -> 128 */ + look->quant_q=128; + break; + case 3: /* 1024 -> 86 */ + look->quant_q=86; + break; + case 4: /* 1024 -> 64 */ + look->quant_q=64; + break; + } + + /* discover our neighbors for decode where we don't use fit flags + (that would push the neighbors outward) */ + for(i=0;in; + int currentx=info->postlist[i+2]; + for(j=0;jpostlist[j]; + if(x>lx && xcurrentx){ + hi=j; + hx=x; + } + } + look->loneighbor[i]=lo; + look->hineighbor[i]=hi; + } + + return(look); +} + +static int render_point(int x0,int x1,int y0,int y1,int x){ + y0&=0x7fff; /* mask off flag */ + y1&=0x7fff; + + { + int dy=y1-y0; + int adx=x1-x0; + int ady=abs(dy); + int err=ady*(x-x0); + + int off=err/adx; + if(dy<0)return(y0-off); + return(y0+off); + } +} + +#ifdef _LOW_ACCURACY_ +# define XdB(n) ((((n)>>8)+1)>>1) +#else +# define XdB(n) (n) +#endif + +static const ogg_int32_t FLOOR_fromdB_LOOKUP[256]={ + XdB(0x000000e5), XdB(0x000000f4), XdB(0x00000103), XdB(0x00000114), + XdB(0x00000126), XdB(0x00000139), XdB(0x0000014e), XdB(0x00000163), + XdB(0x0000017a), XdB(0x00000193), XdB(0x000001ad), XdB(0x000001c9), + XdB(0x000001e7), XdB(0x00000206), XdB(0x00000228), XdB(0x0000024c), + XdB(0x00000272), XdB(0x0000029b), XdB(0x000002c6), XdB(0x000002f4), + XdB(0x00000326), XdB(0x0000035a), XdB(0x00000392), XdB(0x000003cd), + XdB(0x0000040c), XdB(0x00000450), XdB(0x00000497), XdB(0x000004e4), + XdB(0x00000535), XdB(0x0000058c), XdB(0x000005e8), XdB(0x0000064a), + XdB(0x000006b3), XdB(0x00000722), XdB(0x00000799), XdB(0x00000818), + XdB(0x0000089e), XdB(0x0000092e), XdB(0x000009c6), XdB(0x00000a69), + XdB(0x00000b16), XdB(0x00000bcf), XdB(0x00000c93), XdB(0x00000d64), + XdB(0x00000e43), XdB(0x00000f30), XdB(0x0000102d), XdB(0x0000113a), + XdB(0x00001258), XdB(0x0000138a), XdB(0x000014cf), XdB(0x00001629), + XdB(0x0000179a), XdB(0x00001922), XdB(0x00001ac4), XdB(0x00001c82), + XdB(0x00001e5c), XdB(0x00002055), XdB(0x0000226f), XdB(0x000024ac), + XdB(0x0000270e), XdB(0x00002997), XdB(0x00002c4b), XdB(0x00002f2c), + XdB(0x0000323d), XdB(0x00003581), XdB(0x000038fb), XdB(0x00003caf), + XdB(0x000040a0), XdB(0x000044d3), XdB(0x0000494c), XdB(0x00004e10), + XdB(0x00005323), XdB(0x0000588a), XdB(0x00005e4b), XdB(0x0000646b), + XdB(0x00006af2), XdB(0x000071e5), XdB(0x0000794c), XdB(0x0000812e), + XdB(0x00008993), XdB(0x00009283), XdB(0x00009c09), XdB(0x0000a62d), + XdB(0x0000b0f9), XdB(0x0000bc79), XdB(0x0000c8b9), XdB(0x0000d5c4), + XdB(0x0000e3a9), XdB(0x0000f274), XdB(0x00010235), XdB(0x000112fd), + XdB(0x000124dc), XdB(0x000137e4), XdB(0x00014c29), XdB(0x000161bf), + XdB(0x000178bc), XdB(0x00019137), XdB(0x0001ab4a), XdB(0x0001c70e), + XdB(0x0001e4a1), XdB(0x0002041f), XdB(0x000225aa), XdB(0x00024962), + XdB(0x00026f6d), XdB(0x000297f0), XdB(0x0002c316), XdB(0x0002f109), + XdB(0x000321f9), XdB(0x00035616), XdB(0x00038d97), XdB(0x0003c8b4), + XdB(0x000407a7), XdB(0x00044ab2), XdB(0x00049218), XdB(0x0004de23), + XdB(0x00052f1e), XdB(0x0005855c), XdB(0x0005e135), XdB(0x00064306), + XdB(0x0006ab33), XdB(0x00071a24), XdB(0x0007904b), XdB(0x00080e20), + XdB(0x00089422), XdB(0x000922da), XdB(0x0009bad8), XdB(0x000a5cb6), + XdB(0x000b091a), XdB(0x000bc0b1), XdB(0x000c8436), XdB(0x000d5471), + XdB(0x000e3233), XdB(0x000f1e5f), XdB(0x001019e4), XdB(0x001125c1), + XdB(0x00124306), XdB(0x001372d5), XdB(0x0014b663), XdB(0x00160ef7), + XdB(0x00177df0), XdB(0x001904c1), XdB(0x001aa4f9), XdB(0x001c603d), + XdB(0x001e384f), XdB(0x00202f0f), XdB(0x0022467a), XdB(0x002480b1), + XdB(0x0026dff7), XdB(0x002966b3), XdB(0x002c1776), XdB(0x002ef4fc), + XdB(0x0032022d), XdB(0x00354222), XdB(0x0038b828), XdB(0x003c67c2), + XdB(0x004054ae), XdB(0x004482e8), XdB(0x0048f6af), XdB(0x004db488), + XdB(0x0052c142), XdB(0x005821ff), XdB(0x005ddc33), XdB(0x0063f5b0), + XdB(0x006a74a7), XdB(0x00715faf), XdB(0x0078bdce), XdB(0x0080967f), + XdB(0x0088f1ba), XdB(0x0091d7f9), XdB(0x009b5247), XdB(0x00a56a41), + XdB(0x00b02a27), XdB(0x00bb9ce2), XdB(0x00c7ce12), XdB(0x00d4ca17), + XdB(0x00e29e20), XdB(0x00f15835), XdB(0x0101074b), XdB(0x0111bb4e), + XdB(0x01238531), XdB(0x01367704), XdB(0x014aa402), XdB(0x016020a7), + XdB(0x017702c3), XdB(0x018f6190), XdB(0x01a955cb), XdB(0x01c4f9cf), + XdB(0x01e269a8), XdB(0x0201c33b), XdB(0x0223265a), XdB(0x0246b4ea), + XdB(0x026c9302), XdB(0x0294e716), XdB(0x02bfda13), XdB(0x02ed9793), + XdB(0x031e4e09), XdB(0x03522ee4), XdB(0x03896ed0), XdB(0x03c445e2), + XdB(0x0402efd6), XdB(0x0445ac4b), XdB(0x048cbefc), XdB(0x04d87013), + XdB(0x05290c67), XdB(0x057ee5ca), XdB(0x05da5364), XdB(0x063bb204), + XdB(0x06a36485), XdB(0x0711d42b), XdB(0x0787710e), XdB(0x0804b299), + XdB(0x088a17ef), XdB(0x0918287e), XdB(0x09af747c), XdB(0x0a50957e), + XdB(0x0afc2f19), XdB(0x0bb2ef7f), XdB(0x0c759034), XdB(0x0d44d6ca), + XdB(0x0e2195bc), XdB(0x0f0cad0d), XdB(0x10070b62), XdB(0x1111aeea), + XdB(0x122da66c), XdB(0x135c120f), XdB(0x149e24d9), XdB(0x15f525b1), + XdB(0x176270e3), XdB(0x18e7794b), XdB(0x1a85c9ae), XdB(0x1c3f06d1), + XdB(0x1e14f07d), XdB(0x200963d7), XdB(0x221e5ccd), XdB(0x2455f870), + XdB(0x26b2770b), XdB(0x29363e2b), XdB(0x2be3db5c), XdB(0x2ebe06b6), + XdB(0x31c7a55b), XdB(0x3503ccd4), XdB(0x3875c5aa), XdB(0x3c210f44), + XdB(0x4009632b), XdB(0x4432b8cf), XdB(0x48a149bc), XdB(0x4d59959e), + XdB(0x52606733), XdB(0x57bad899), XdB(0x5d6e593a), XdB(0x6380b298), + XdB(0x69f80e9a), XdB(0x70dafda8), XdB(0x78307d76), XdB(0x7fffffff), +}; + +static void render_line(int n, int x0,int x1,int y0,int y1,ogg_int32_t *d){ + int dy=y1-y0; + int adx=x1-x0; + int ady=abs(dy); + int base=dy/adx; + int sy=(dy<0?base-1:base+1); + int x=x0; + int y=y0; + int err=0; + + if(n>x1)n=x1; + ady-=abs(base*adx); + + if(x=adx){ + err-=adx; + y+=sy; + }else{ + y+=base; + } + d[x]= MULT31_SHIFT15(d[x],FLOOR_fromdB_LOOKUP[y]); + } +} + +static void *floor1_inverse1(vorbis_block *vb,vorbis_look_floor *in){ + vorbis_look_floor1 *look=(vorbis_look_floor1 *)in; + vorbis_info_floor1 *info=look->vi; + codec_setup_info *ci=(codec_setup_info *)vb->vd->vi->codec_setup; + + int i,j,k; + codebook *books=ci->fullbooks; + + /* unpack wrapped/predicted values from stream */ + if(oggpack_read(&vb->opb,1)==1){ + int *fit_value=(int *)_vorbis_block_alloc(vb,(look->posts)*sizeof(*fit_value)); + + fit_value[0]=oggpack_read(&vb->opb,ilog(look->quant_q-1)); + fit_value[1]=oggpack_read(&vb->opb,ilog(look->quant_q-1)); + + /* partition by partition */ + /* partition by partition */ + for(i=0,j=2;ipartitions;i++){ + int classv=info->partitionclass[i]; + int cdim=info->class_dim[classv]; + int csubbits=info->class_subs[classv]; + int csub=1<class_book[classv],&vb->opb); + + if(cval==-1)goto eop; + } + + for(k=0;kclass_subbook[classv][cval&(csub-1)]; + cval>>=csubbits; + if(book>=0){ + if((fit_value[j+k]=vorbis_book_decode(books+book,&vb->opb))==-1) + goto eop; + }else{ + fit_value[j+k]=0; + } + } + j+=cdim; + } + + /* unwrap positive values and reconsitute via linear interpolation */ + for(i=2;iposts;i++){ + int predicted=render_point(info->postlist[look->loneighbor[i-2]], + info->postlist[look->hineighbor[i-2]], + fit_value[look->loneighbor[i-2]], + fit_value[look->hineighbor[i-2]], + info->postlist[i]); + int hiroom=look->quant_q-predicted; + int loroom=predicted; + int room=(hiroom=room){ + if(hiroom>loroom){ + val = val-loroom; + }else{ + val = -1-(val-hiroom); + } + }else{ + if(val&1){ + val= -((val+1)>>1); + }else{ + val>>=1; + } + } + + fit_value[i]=val+predicted; + fit_value[look->loneighbor[i-2]]&=0x7fff; + fit_value[look->hineighbor[i-2]]&=0x7fff; + + }else{ + fit_value[i]=predicted|0x8000; + } + + } + + return(fit_value); + } + eop: + return(NULL); +} + +static int floor1_inverse2(vorbis_block *vb,vorbis_look_floor *in,void *memo, + ogg_int32_t *out){ + vorbis_look_floor1 *look=(vorbis_look_floor1 *)in; + vorbis_info_floor1 *info=look->vi; + + codec_setup_info *ci=(codec_setup_info *)vb->vd->vi->codec_setup; + int n=ci->blocksizes[vb->W]/2; + int j; + + if(memo){ + /* render the lines */ + int *fit_value=(int *)memo; + int hx=0; + int lx=0; + int ly=fit_value[0]*info->mult; + for(j=1;jposts;j++){ + int current=look->forward_index[j]; + int hy=fit_value[current]&0x7fff; + if(hy==fit_value[current]){ + + hy*=info->mult; + hx=info->postlist[current]; + + render_line(n,lx,hx,ly,hy,out); + + lx=hx; + ly=hy; + } + } + for(j=hx;j +#include +#include "ogg.h" +#include "misc.h" + + +/* A complete description of Ogg framing exists in docs/framing.html */ + +/* basic, centralized Ogg memory management based on linked lists of + references to refcounted memory buffers. References and buffers + are both recycled. Buffers are passed around and consumed in + reference form. */ + +static ogg_buffer_state *ogg_buffer_create(void){ + ogg_buffer_state *bs=_ogg_calloc(1,sizeof(*bs)); + return bs; +} + +/* destruction is 'lazy'; there may be memory references outstanding, + and yanking the buffer state out from underneath would be + antisocial. Dealloc what is currently unused and have + _release_one watch for the stragglers to come in. When they do, + finish destruction. */ + +/* call the helper while holding lock */ +static void _ogg_buffer_destroy(ogg_buffer_state *bs){ + ogg_buffer *bt; + ogg_reference *rt; + + if(bs->shutdown){ + + bt=bs->unused_buffers; + rt=bs->unused_references; + + while(bt){ + ogg_buffer *b=bt; + bt=b->ptr.next; + if(b->data)_ogg_free(b->data); + _ogg_free(b); + } + bs->unused_buffers=0; + while(rt){ + ogg_reference *r=rt; + rt=r->next; + _ogg_free(r); + } + bs->unused_references=0; + + if(!bs->outstanding) + _ogg_free(bs); + + } +} + +static void ogg_buffer_destroy(ogg_buffer_state *bs){ + bs->shutdown=1; + _ogg_buffer_destroy(bs); +} + +static ogg_buffer *_fetch_buffer(ogg_buffer_state *bs,long bytes){ + ogg_buffer *ob; + bs->outstanding++; + + /* do we have an unused buffer sitting in the pool? */ + if(bs->unused_buffers){ + ob=bs->unused_buffers; + bs->unused_buffers=ob->ptr.next; + + /* if the unused buffer is too small, grow it */ + if(ob->sizedata=_ogg_realloc(ob->data,bytes); + ob->size=bytes; + } + }else{ + /* allocate a new buffer */ + ob=_ogg_malloc(sizeof(*ob)); + ob->data=_ogg_malloc(bytes<16?16:bytes); + ob->size=bytes; + } + + ob->refcount=1; + ob->ptr.owner=bs; + return ob; +} + +static ogg_reference *_fetch_ref(ogg_buffer_state *bs){ + ogg_reference *or; + bs->outstanding++; + + /* do we have an unused reference sitting in the pool? */ + if(bs->unused_references){ + or=bs->unused_references; + bs->unused_references=or->next; + }else{ + /* allocate a new reference */ + or=_ogg_malloc(sizeof(*or)); + } + + or->begin=0; + or->length=0; + or->next=0; + return or; +} + +/* fetch a reference pointing to a fresh, initially continguous buffer + of at least [bytes] length */ +static ogg_reference *ogg_buffer_alloc(ogg_buffer_state *bs,long bytes){ + ogg_buffer *ob=_fetch_buffer(bs,bytes); + ogg_reference *or=_fetch_ref(bs); + or->buffer=ob; + return or; +} + +/* enlarge the data buffer in the current link */ +static void ogg_buffer_realloc(ogg_reference *or,long bytes){ + ogg_buffer *ob=or->buffer; + + /* if the unused buffer is too small, grow it */ + if(ob->sizedata=_ogg_realloc(ob->data,bytes); + ob->size=bytes; + } +} + +static void _ogg_buffer_mark_one(ogg_reference *or){ + or->buffer->refcount++; +} + +/* increase the refcount of the buffers to which the reference points */ +static void ogg_buffer_mark(ogg_reference *or){ + while(or){ + _ogg_buffer_mark_one(or); + or=or->next; + } +} + +/* duplicate a reference (pointing to the same actual buffer memory) + and increment buffer refcount. If the desired segment begins out + of range, NULL is returned; if the desired segment is simply zero + length, a zero length ref is returned. Partial range overlap + returns the overlap of the ranges */ +static ogg_reference *ogg_buffer_sub(ogg_reference *or,long begin,long length){ + ogg_reference *ret=0,*head=0; + + /* walk past any preceeding fragments we don't want */ + while(or && begin>=or->length){ + begin-=or->length; + or=or->next; + } + + /* duplicate the reference chain; increment refcounts */ + while(or && length){ + ogg_reference *temp=_fetch_ref(or->buffer->ptr.owner); + if(head) + head->next=temp; + else + ret=temp; + head=temp; + head->buffer=or->buffer; + head->begin=or->begin+begin; + head->length=length; + if(head->length>or->length-begin) + head->length=or->length-begin; + + begin=0; + length-=head->length; + or=or->next; + } + + ogg_buffer_mark(ret); + return ret; +} + +ogg_reference *ogg_buffer_dup(ogg_reference *or){ + ogg_reference *ret=0,*head=0; + /* duplicate the reference chain; increment refcounts */ + while(or){ + ogg_reference *temp=_fetch_ref(or->buffer->ptr.owner); + if(head) + head->next=temp; + else + ret=temp; + head=temp; + head->buffer=or->buffer; + head->begin=or->begin; + head->length=or->length; + or=or->next; + } + + ogg_buffer_mark(ret); + return ret; +} + +/* split a reference into two references; 'return' is a reference to + the buffer preceeding pos and 'head'/'tail' are the buffer past the + split. If pos is at or past the end of the passed in segment, + 'head/tail' are NULL */ +static ogg_reference *ogg_buffer_split(ogg_reference **tail, + ogg_reference **head,long pos){ + + /* walk past any preceeding fragments to one of: + a) the exact boundary that seps two fragments + b) the fragment that needs split somewhere in the middle */ + ogg_reference *ret=*tail; + ogg_reference *or=*tail; + + while(or && pos>or->length){ + pos-=or->length; + or=or->next; + } + + if(!or || pos==0){ + + return 0; + + }else{ + + if(pos>=or->length){ + /* exact split, or off the end? */ + if(or->next){ + + /* a split */ + *tail=or->next; + or->next=0; + + }else{ + + /* off or at the end */ + *tail=*head=0; + + } + }else{ + + /* split within a fragment */ + long lengthA=pos; + long beginB=or->begin+pos; + long lengthB=or->length-pos; + + /* make a new reference to tail the second piece */ + *tail=_fetch_ref(or->buffer->ptr.owner); + + (*tail)->buffer=or->buffer; + (*tail)->begin=beginB; + (*tail)->length=lengthB; + (*tail)->next=or->next; + _ogg_buffer_mark_one(*tail); + if(head && or==*head)*head=*tail; + + /* update the first piece */ + or->next=0; + or->length=lengthA; + + } + } + return ret; +} + +static void ogg_buffer_release_one(ogg_reference *or){ + ogg_buffer *ob=or->buffer; + ogg_buffer_state *bs=ob->ptr.owner; + + ob->refcount--; + if(ob->refcount==0){ + bs->outstanding--; /* for the returned buffer */ + ob->ptr.next=bs->unused_buffers; + bs->unused_buffers=ob; + } + + bs->outstanding--; /* for the returned reference */ + or->next=bs->unused_references; + bs->unused_references=or; + + _ogg_buffer_destroy(bs); /* lazy cleanup (if needed) */ + +} + +/* release the references, decrease the refcounts of buffers to which + they point, release any buffers with a refcount that drops to zero */ +static void ogg_buffer_release(ogg_reference *or){ + while(or){ + ogg_reference *next=or->next; + ogg_buffer_release_one(or); + or=next; + } +} + +static ogg_reference *ogg_buffer_pretruncate(ogg_reference *or,long pos){ + /* release preceeding fragments we don't want */ + while(or && pos>=or->length){ + ogg_reference *next=or->next; + pos-=or->length; + ogg_buffer_release_one(or); + or=next; + } + if (or) { + or->begin+=pos; + or->length-=pos; + } + return or; +} + +static ogg_reference *ogg_buffer_walk(ogg_reference *or){ + if(!or)return NULL; + while(or->next){ + or=or->next; + } + return(or); +} + +/* *head is appended to the front end (head) of *tail; both continue to + be valid pointers, with *tail at the tail and *head at the head */ +static ogg_reference *ogg_buffer_cat(ogg_reference *tail, ogg_reference *head){ + if(!tail)return head; + + while(tail->next){ + tail=tail->next; + } + tail->next=head; + return ogg_buffer_walk(head); +} + +static void _positionB(oggbyte_buffer *b,int pos){ + if(pospos){ + /* start at beginning, scan forward */ + b->ref=b->baseref; + b->pos=0; + b->end=b->pos+b->ref->length; + b->ptr=b->ref->buffer->data+b->ref->begin; + } +} + +static void _positionF(oggbyte_buffer *b,int pos){ + /* scan forward for position */ + while(pos>=b->end){ + /* just seek forward */ + b->pos+=b->ref->length; + b->ref=b->ref->next; + b->end=b->ref->length+b->pos; + b->ptr=b->ref->buffer->data+b->ref->begin; + } +} + +static int oggbyte_init(oggbyte_buffer *b,ogg_reference *or){ + memset(b,0,sizeof(*b)); + if(or){ + b->ref=b->baseref=or; + b->pos=0; + b->end=b->ref->length; + b->ptr=b->ref->buffer->data+b->ref->begin; + return 0; + }else + return -1; +} + +static void oggbyte_set4(oggbyte_buffer *b,ogg_uint32_t val,int pos){ + int i; + _positionB(b,pos); + for(i=0;i<4;i++){ + _positionF(b,pos); + b->ptr[pos-b->pos]=val; + val>>=8; + ++pos; + } +} + +static unsigned char oggbyte_read1(oggbyte_buffer *b,int pos){ + _positionB(b,pos); + _positionF(b,pos); + return b->ptr[pos-b->pos]; +} + +static ogg_uint32_t oggbyte_read4(oggbyte_buffer *b,int pos){ + ogg_uint32_t ret; + _positionB(b,pos); + _positionF(b,pos); + ret=b->ptr[pos-b->pos]; + _positionF(b,++pos); + ret|=b->ptr[pos-b->pos]<<8; + _positionF(b,++pos); + ret|=b->ptr[pos-b->pos]<<16; + _positionF(b,++pos); + ret|=b->ptr[pos-b->pos]<<24; + return ret; +} + +static ogg_int64_t oggbyte_read8(oggbyte_buffer *b,int pos){ + ogg_int64_t ret; + unsigned char t[7]; + int i; + _positionB(b,pos); + for(i=0;i<7;i++){ + _positionF(b,pos); + t[i]=b->ptr[pos++ -b->pos]; + } + + _positionF(b,pos); + ret=b->ptr[pos-b->pos]; + + for(i=6;i>=0;--i) + ret= ret<<8 | t[i]; + + return ret; +} + +/* Now we get to the actual framing code */ + +int ogg_page_version(ogg_page *og){ + oggbyte_buffer ob; + oggbyte_init(&ob,og->header); + return oggbyte_read1(&ob,4); +} + +int ogg_page_continued(ogg_page *og){ + oggbyte_buffer ob; + oggbyte_init(&ob,og->header); + return oggbyte_read1(&ob,5)&0x01; +} + +int ogg_page_bos(ogg_page *og){ + oggbyte_buffer ob; + oggbyte_init(&ob,og->header); + return oggbyte_read1(&ob,5)&0x02; +} + +int ogg_page_eos(ogg_page *og){ + oggbyte_buffer ob; + oggbyte_init(&ob,og->header); + return oggbyte_read1(&ob,5)&0x04; +} + +ogg_int64_t ogg_page_granulepos(ogg_page *og){ + oggbyte_buffer ob; + oggbyte_init(&ob,og->header); + return oggbyte_read8(&ob,6); +} + +ogg_uint32_t ogg_page_serialno(ogg_page *og){ + oggbyte_buffer ob; + oggbyte_init(&ob,og->header); + return oggbyte_read4(&ob,14); +} + +ogg_uint32_t ogg_page_pageno(ogg_page *og){ + oggbyte_buffer ob; + oggbyte_init(&ob,og->header); + return oggbyte_read4(&ob,18); +} + +/* returns the number of packets that are completed on this page (if + the leading packet is begun on a previous page, but ends on this + page, it's counted */ + +/* NOTE: +If a page consists of a packet begun on a previous page, and a new +packet begun (but not completed) on this page, the return will be: + ogg_page_packets(page) ==1, + ogg_page_continued(page) !=0 + +If a page happens to be a single packet that was begun on a +previous page, and spans to the next page (in the case of a three or +more page packet), the return will be: + ogg_page_packets(page) ==0, + ogg_page_continued(page) !=0 +*/ + +int ogg_page_packets(ogg_page *og){ + int i; + int n; + int count=0; + oggbyte_buffer ob; + oggbyte_init(&ob,og->header); + + n=oggbyte_read1(&ob,26); + for(i=0;ibufferpool=ogg_buffer_create(); + return oy; +} + +int ogg_sync_destroy(ogg_sync_state *oy){ + if(oy){ + ogg_sync_reset(oy); + ogg_buffer_destroy(oy->bufferpool); + memset(oy,0,sizeof(*oy)); + _ogg_free(oy); + } + return OGG_SUCCESS; +} + +unsigned char *ogg_sync_bufferin(ogg_sync_state *oy, long bytes){ + + /* [allocate and] expose a buffer for data submission. + + If there is no head fragment + allocate one and expose it + else + if the current head fragment has sufficient unused space + expose it + else + if the current head fragment is unused + resize and expose it + else + allocate new fragment and expose it + */ + + /* base case; fifo uninitialized */ + if(!oy->fifo_head){ + oy->fifo_head=oy->fifo_tail=ogg_buffer_alloc(oy->bufferpool,bytes); + return oy->fifo_head->buffer->data; + } + + /* space left in current fragment case */ + if(oy->fifo_head->buffer->size- + oy->fifo_head->length- + oy->fifo_head->begin >= bytes) + return oy->fifo_head->buffer->data+ + oy->fifo_head->length+oy->fifo_head->begin; + + /* current fragment is unused, but too small */ + if(!oy->fifo_head->length){ + ogg_buffer_realloc(oy->fifo_head,bytes); + return oy->fifo_head->buffer->data+oy->fifo_head->begin; + } + + /* current fragment used/full; get new fragment */ + { + ogg_reference *new=ogg_buffer_alloc(oy->bufferpool,bytes); + oy->fifo_head->next=new; + oy->fifo_head=new; + } + return oy->fifo_head->buffer->data; +} + +int ogg_sync_wrote(ogg_sync_state *oy, long bytes){ + if(!oy->fifo_head)return OGG_EINVAL; + if(oy->fifo_head->buffer->size-oy->fifo_head->length-oy->fifo_head->begin < + bytes)return OGG_EINVAL; + oy->fifo_head->length+=bytes; + oy->fifo_fill+=bytes; + return OGG_SUCCESS; +} + +static ogg_uint32_t _checksum(ogg_reference *or, int bytes){ + ogg_uint32_t crc_reg=0; + int j,post; + + while(or){ + unsigned char *data=or->buffer->data+or->begin; + post=(byteslength?bytes:or->length); + for(j=0;j> 24)&0xff)^data[j]]; + bytes-=j; + or=or->next; + } + + return crc_reg; +} + + +/* sync the stream. This is meant to be useful for finding page + boundaries. + + return values for this: + -n) skipped n bytes + 0) page not ready; more data (no bytes skipped) + n) page synced at current location; page length n bytes + +*/ + +long ogg_sync_pageseek(ogg_sync_state *oy,ogg_page *og){ + oggbyte_buffer page; + long bytes,ret=0; + + ogg_page_release(og); + + bytes=oy->fifo_fill; + oggbyte_init(&page,oy->fifo_tail); + + if(oy->headerbytes==0){ + if(bytes<27)goto sync_out; /* not enough for even a minimal header */ + + /* verify capture pattern */ + if(oggbyte_read1(&page,0)!=(int)'O' || + oggbyte_read1(&page,1)!=(int)'g' || + oggbyte_read1(&page,2)!=(int)'g' || + oggbyte_read1(&page,3)!=(int)'S' ) goto sync_fail; + + oy->headerbytes=oggbyte_read1(&page,26)+27; + } + if(bytesheaderbytes)goto sync_out; /* not enough for header + + seg table */ + if(oy->bodybytes==0){ + int i; + /* count up body length in the segment table */ + for(i=0;iheaderbytes-27;i++) + oy->bodybytes+=oggbyte_read1(&page,27+i); + } + + if(oy->bodybytes+oy->headerbytes>bytes)goto sync_out; + + /* we have what appears to be a complete page; last test: verify + checksum */ + { + ogg_uint32_t chksum=oggbyte_read4(&page,22); + oggbyte_set4(&page,0,22); + + /* Compare checksums; memory continues to be common access */ + if(chksum!=_checksum(oy->fifo_tail,oy->bodybytes+oy->headerbytes)){ + + /* D'oh. Mismatch! Corrupt page (or miscapture and not a page + at all). replace the computed checksum with the one actually + read in; remember all the memory is common access */ + + oggbyte_set4(&page,chksum,22); + goto sync_fail; + } + oggbyte_set4(&page,chksum,22); + } + + /* We have a page. Set up page return. */ + if(og){ + /* set up page output */ + og->header=ogg_buffer_split(&oy->fifo_tail,&oy->fifo_head,oy->headerbytes); + og->header_len=oy->headerbytes; + og->body=ogg_buffer_split(&oy->fifo_tail,&oy->fifo_head,oy->bodybytes); + og->body_len=oy->bodybytes; + }else{ + /* simply advance */ + oy->fifo_tail= + ogg_buffer_pretruncate(oy->fifo_tail,oy->headerbytes+oy->bodybytes); + if(!oy->fifo_tail)oy->fifo_head=0; + } + + ret=oy->headerbytes+oy->bodybytes; + oy->unsynced=0; + oy->headerbytes=0; + oy->bodybytes=0; + oy->fifo_fill-=ret; + + return ret; + + sync_fail: + + oy->headerbytes=0; + oy->bodybytes=0; + oy->fifo_tail=ogg_buffer_pretruncate(oy->fifo_tail,1); + ret--; + + /* search forward through fragments for possible capture */ + while(oy->fifo_tail){ + /* invariant: fifo_cursor points to a position in fifo_tail */ + unsigned char *now=oy->fifo_tail->buffer->data+oy->fifo_tail->begin; + unsigned char *next=memchr(now, 'O', oy->fifo_tail->length); + + if(next){ + /* possible capture in this segment */ + long bytes=next-now; + oy->fifo_tail=ogg_buffer_pretruncate(oy->fifo_tail,bytes); + ret-=bytes; + break; + }else{ + /* no capture. advance to next segment */ + long bytes=oy->fifo_tail->length; + ret-=bytes; + oy->fifo_tail=ogg_buffer_pretruncate(oy->fifo_tail,bytes); + } + } + if(!oy->fifo_tail)oy->fifo_head=0; + oy->fifo_fill+=ret; + + sync_out: + return ret; +} + +/* sync the stream and get a page. Keep trying until we find a page. + Supress 'sync errors' after reporting the first. + + return values: + OGG_HOLE) recapture (hole in data) + 0) need more data + 1) page returned + + Returns pointers into buffered data; invalidated by next call to + _stream, _clear, _init, or _buffer */ + +int ogg_sync_pageout(ogg_sync_state *oy, ogg_page *og){ + + /* all we need to do is verify a page at the head of the stream + buffer. If it doesn't verify, we look for the next potential + frame */ + + while(1){ + long ret=ogg_sync_pageseek(oy,og); + if(ret>0){ + /* have a page */ + return 1; + } + if(ret==0){ + /* need more data */ + return 0; + } + + /* head did not start a synced page... skipped some bytes */ + if(!oy->unsynced){ + oy->unsynced=1; + return OGG_HOLE; + } + + /* loop. keep looking */ + + } +} + +/* clear things to an initial state. Good to call, eg, before seeking */ +int ogg_sync_reset(ogg_sync_state *oy){ + + ogg_buffer_release(oy->fifo_tail); + oy->fifo_tail=0; + oy->fifo_head=0; + oy->fifo_fill=0; + + oy->unsynced=0; + oy->headerbytes=0; + oy->bodybytes=0; + return OGG_SUCCESS; +} + +ogg_stream_state *ogg_stream_create(int serialno){ + ogg_stream_state *os=_ogg_calloc(1,sizeof(*os)); + os->serialno=serialno; + os->pageno=-1; + return os; +} + +int ogg_stream_destroy(ogg_stream_state *os){ + if(os){ + ogg_buffer_release(os->header_tail); + ogg_buffer_release(os->body_tail); + memset(os,0,sizeof(*os)); + _ogg_free(os); + } + return OGG_SUCCESS; +} + + +#define FINFLAG 0x80000000UL +#define FINMASK 0x7fffffffUL + +static void _next_lace(oggbyte_buffer *ob,ogg_stream_state *os){ + /* search ahead one lace */ + os->body_fill_next=0; + while(os->laceptrlacing_fill){ + int val=oggbyte_read1(ob,27+os->laceptr++); + os->body_fill_next+=val; + if(val<255){ + os->body_fill_next|=FINFLAG; + os->clearflag=1; + break; + } + } +} + +static void _span_queued_page(ogg_stream_state *os){ + while( !(os->body_fill&FINFLAG) ){ + + if(!os->header_tail)break; + + /* first flush out preceeding page header (if any). Body is + flushed as it's consumed, so that's not done here. */ + + if(os->lacing_fill>=0) + os->header_tail=ogg_buffer_pretruncate(os->header_tail, + os->lacing_fill+27); + os->lacing_fill=0; + os->laceptr=0; + os->clearflag=0; + + if(!os->header_tail){ + os->header_head=0; + break; + }else{ + + /* process/prepare next page, if any */ + + long pageno; + oggbyte_buffer ob; + ogg_page og; /* only for parsing header values */ + og.header=os->header_tail; /* only for parsing header values */ + pageno=ogg_page_pageno(&og); + + oggbyte_init(&ob,os->header_tail); + os->lacing_fill=oggbyte_read1(&ob,26); + + /* are we in sequence? */ + if(pageno!=os->pageno){ + if(os->pageno==-1) /* indicates seek or reset */ + os->holeflag=1; /* set for internal use */ + else + os->holeflag=2; /* set for external reporting */ + + os->body_tail=ogg_buffer_pretruncate(os->body_tail, + os->body_fill); + if(os->body_tail==0)os->body_head=0; + os->body_fill=0; + + } + + if(ogg_page_continued(&og)){ + if(os->body_fill==0){ + /* continued packet, but no preceeding data to continue */ + /* dump the first partial packet on the page */ + _next_lace(&ob,os); + os->body_tail= + ogg_buffer_pretruncate(os->body_tail,os->body_fill_next&FINMASK); + if(os->body_tail==0)os->body_head=0; + /* set span flag */ + if(!os->spanflag && !os->holeflag)os->spanflag=2; + } + }else{ + if(os->body_fill>0){ + /* preceeding data to continue, but not a continued page */ + /* dump body_fill */ + os->body_tail=ogg_buffer_pretruncate(os->body_tail, + os->body_fill); + if(os->body_tail==0)os->body_head=0; + os->body_fill=0; + + /* set espan flag */ + if(!os->spanflag && !os->holeflag)os->spanflag=2; + } + } + + if(os->laceptrlacing_fill){ + os->granulepos=ogg_page_granulepos(&og); + + /* get current packet size & flag */ + _next_lace(&ob,os); + os->body_fill+=os->body_fill_next; /* addition handles the flag fine; + unsigned on purpose */ + /* ...and next packet size & flag */ + _next_lace(&ob,os); + + } + + os->pageno=pageno+1; + os->e_o_s=ogg_page_eos(&og); + os->b_o_s=ogg_page_bos(&og); + + } + } +} + +/* add the incoming page to the stream state; we decompose the page + into packet segments here as well. */ + +int ogg_stream_pagein(ogg_stream_state *os, ogg_page *og){ + + int serialno=ogg_page_serialno(og); + int version=ogg_page_version(og); + + /* check the serial number */ + if(serialno!=os->serialno){ + ogg_page_release(og); + return OGG_ESERIAL; + } + if(version>0){ + ogg_page_release(og); + return OGG_EVERSION; + } + + /* add to fifos */ + if(!os->body_tail){ + os->body_tail=og->body; + os->body_head=ogg_buffer_walk(og->body); + }else{ + os->body_head=ogg_buffer_cat(os->body_head,og->body); + } + if(!os->header_tail){ + os->header_tail=og->header; + os->header_head=ogg_buffer_walk(og->header); + os->lacing_fill=-27; + }else{ + os->header_head=ogg_buffer_cat(os->header_head,og->header); + } + + memset(og,0,sizeof(*og)); + return OGG_SUCCESS; +} + +int ogg_stream_reset(ogg_stream_state *os){ + + ogg_buffer_release(os->header_tail); + ogg_buffer_release(os->body_tail); + os->header_tail=os->header_head=0; + os->body_tail=os->body_head=0; + + os->e_o_s=0; + os->b_o_s=0; + os->pageno=-1; + os->packetno=0; + os->granulepos=0; + + os->body_fill=0; + os->lacing_fill=0; + + os->holeflag=0; + os->spanflag=0; + os->clearflag=0; + os->laceptr=0; + os->body_fill_next=0; + + return OGG_SUCCESS; +} + +int ogg_stream_reset_serialno(ogg_stream_state *os,int serialno){ + ogg_stream_reset(os); + os->serialno=serialno; + return OGG_SUCCESS; +} + +static int _packetout(ogg_stream_state *os,ogg_packet *op,int adv){ + + ogg_packet_release(op); + _span_queued_page(os); + + if(os->holeflag){ + int temp=os->holeflag; + if(os->clearflag) + os->holeflag=0; + else + os->holeflag=1; + if(temp==2){ + os->packetno++; + return OGG_HOLE; + } + } + if(os->spanflag){ + int temp=os->spanflag; + if(os->clearflag) + os->spanflag=0; + else + os->spanflag=1; + if(temp==2){ + os->packetno++; + return OGG_SPAN; + } + } + + if(!(os->body_fill&FINFLAG)) return 0; + if(!op && !adv)return 1; /* just using peek as an inexpensive way + to ask if there's a whole packet + waiting */ + if(op){ + op->b_o_s=os->b_o_s; + if(os->e_o_s && os->body_fill_next==0) + op->e_o_s=os->e_o_s; + else + op->e_o_s=0; + if( (os->body_fill&FINFLAG) && !(os->body_fill_next&FINFLAG) ) + op->granulepos=os->granulepos; + else + op->granulepos=-1; + op->packetno=os->packetno; + } + + if(adv){ + oggbyte_buffer ob; + oggbyte_init(&ob,os->header_tail); + + /* split the body contents off */ + if(op){ + op->packet=ogg_buffer_split(&os->body_tail,&os->body_head, + os->body_fill&FINMASK); + op->bytes=os->body_fill&FINMASK; + }else{ + os->body_tail=ogg_buffer_pretruncate(os->body_tail, + os->body_fill&FINMASK); + if(os->body_tail==0)os->body_head=0; + } + + /* update lacing pointers */ + os->body_fill=os->body_fill_next; + _next_lace(&ob,os); + }else{ + if(op){ + op->packet=ogg_buffer_sub(os->body_tail,0,os->body_fill&FINMASK); + op->bytes=os->body_fill&FINMASK; + } + } + + if(adv){ + os->packetno++; + os->b_o_s=0; + } + + return 1; +} + +int ogg_stream_packetout(ogg_stream_state *os,ogg_packet *op){ + return _packetout(os,op,1); +} + +int ogg_stream_packetpeek(ogg_stream_state *os,ogg_packet *op){ + return _packetout(os,op,0); +} + +int ogg_packet_release(ogg_packet *op) { + if(op){ + ogg_buffer_release(op->packet); + memset(op, 0, sizeof(*op)); + } + return OGG_SUCCESS; +} + +int ogg_page_release(ogg_page *og) { + if(og){ + ogg_buffer_release(og->header); + ogg_buffer_release(og->body); + memset(og, 0, sizeof(*og)); + } + return OGG_SUCCESS; +} + +void ogg_page_dup(ogg_page *dup,ogg_page *orig){ + dup->header_len=orig->header_len; + dup->body_len=orig->body_len; + dup->header=ogg_buffer_dup(orig->header); + dup->body=ogg_buffer_dup(orig->body); +} + diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/info.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/info.c Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,356 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: maintain the info structure, info <-> header packets + + ********************************************************************/ + +/* general handling of the header and the vorbis_info structure (and + substructures) */ + +#include +#include +#include +#include "ogg.h" +#include "ivorbiscodec.h" +#include "codec_internal.h" +#include "codebook.h" +#include "registry.h" +#include "window.h" +#include "misc.h" + +/* helpers */ +static void _v_readstring(oggpack_buffer *o,char *buf,int bytes){ + while(bytes--){ + *buf++=oggpack_read(o,8); + } +} + +void vorbis_comment_init(vorbis_comment *vc){ + memset(vc,0,sizeof(*vc)); +} + +/* This is more or less the same as strncasecmp - but that doesn't exist + * everywhere, and this is a fairly trivial function, so we include it */ +static int tagcompare(const char *s1, const char *s2, int n){ + int c=0; + while(c < n){ + if(toupper(s1[c]) != toupper(s2[c])) + return !0; + c++; + } + return 0; +} + +char *vorbis_comment_query(vorbis_comment *vc, char *tag, int count){ + long i; + int found = 0; + int taglen = strlen(tag)+1; /* +1 for the = we append */ + char *fulltag = (char *)alloca(taglen+ 1); + + strcpy(fulltag, tag); + strcat(fulltag, "="); + + for(i=0;icomments;i++){ + if(!tagcompare(vc->user_comments[i], fulltag, taglen)){ + if(count == found) + /* We return a pointer to the data, not a copy */ + return vc->user_comments[i] + taglen; + else + found++; + } + } + return NULL; /* didn't find anything */ +} + +int vorbis_comment_query_count(vorbis_comment *vc, char *tag){ + int i,count=0; + int taglen = strlen(tag)+1; /* +1 for the = we append */ + char *fulltag = (char *)alloca(taglen+1); + strcpy(fulltag,tag); + strcat(fulltag, "="); + + for(i=0;icomments;i++){ + if(!tagcompare(vc->user_comments[i], fulltag, taglen)) + count++; + } + + return count; +} + +void vorbis_comment_clear(vorbis_comment *vc){ + if(vc){ + long i; + for(i=0;icomments;i++) + if(vc->user_comments[i])_ogg_free(vc->user_comments[i]); + if(vc->user_comments)_ogg_free(vc->user_comments); + if(vc->comment_lengths)_ogg_free(vc->comment_lengths); + if(vc->vendor)_ogg_free(vc->vendor); + memset(vc,0,sizeof(*vc)); + } +} + +/* blocksize 0 is guaranteed to be short, 1 is guarantted to be long. + They may be equal, but short will never ge greater than long */ +int vorbis_info_blocksize(vorbis_info *vi,int zo){ + codec_setup_info *ci = (codec_setup_info *)vi->codec_setup; + return ci ? ci->blocksizes[zo] : -1; +} + +/* used by synthesis, which has a full, alloced vi */ +void vorbis_info_init(vorbis_info *vi){ + memset(vi,0,sizeof(*vi)); + vi->codec_setup=(codec_setup_info *)_ogg_calloc(1,sizeof(codec_setup_info)); +} + +void vorbis_info_clear(vorbis_info *vi){ + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + int i; + + if(ci){ + + for(i=0;imodes;i++) + if(ci->mode_param[i])_ogg_free(ci->mode_param[i]); + + for(i=0;imaps;i++) /* unpack does the range checking */ + if(ci->map_param[i]) + _mapping_P[ci->map_type[i]]->free_info(ci->map_param[i]); + + for(i=0;ifloors;i++) /* unpack does the range checking */ + if(ci->floor_param[i]) + _floor_P[ci->floor_type[i]]->free_info(ci->floor_param[i]); + + for(i=0;iresidues;i++) /* unpack does the range checking */ + if(ci->residue_param[i]) + _residue_P[ci->residue_type[i]]->free_info(ci->residue_param[i]); + + for(i=0;ibooks;i++){ + if(ci->book_param[i]){ + /* knows if the book was not alloced */ + vorbis_staticbook_destroy(ci->book_param[i]); + } + if(ci->fullbooks) + vorbis_book_clear(ci->fullbooks+i); + } + if(ci->fullbooks) + _ogg_free(ci->fullbooks); + + _ogg_free(ci); + } + + memset(vi,0,sizeof(*vi)); +} + +/* Header packing/unpacking ********************************************/ + +static int _vorbis_unpack_info(vorbis_info *vi,oggpack_buffer *opb){ + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + if(!ci)return(OV_EFAULT); + + vi->version=oggpack_read(opb,32); + if(vi->version!=0)return(OV_EVERSION); + + vi->channels=oggpack_read(opb,8); + vi->rate=oggpack_read(opb,32); + + vi->bitrate_upper=oggpack_read(opb,32); + vi->bitrate_nominal=oggpack_read(opb,32); + vi->bitrate_lower=oggpack_read(opb,32); + + ci->blocksizes[0]=1<blocksizes[1]=1<rate<1)goto err_out; + if(vi->channels<1)goto err_out; + if(ci->blocksizes[0]<64)goto err_out; + if(ci->blocksizes[1]blocksizes[0])goto err_out; + if(ci->blocksizes[1]>8192)goto err_out; + + if(oggpack_read(opb,1)!=1)goto err_out; /* EOP check */ + + return(0); + err_out: + vorbis_info_clear(vi); + return(OV_EBADHEADER); +} + +static int _vorbis_unpack_comment(vorbis_comment *vc,oggpack_buffer *opb){ + int i; + int vendorlen=oggpack_read(opb,32); + if(vendorlen<0)goto err_out; + vc->vendor=(char *)_ogg_calloc(vendorlen+1,1); + _v_readstring(opb,vc->vendor,vendorlen); + vc->comments=oggpack_read(opb,32); + if(vc->comments<0)goto err_out; + vc->user_comments=(char **)_ogg_calloc(vc->comments+1,sizeof(*vc->user_comments)); + vc->comment_lengths=(int *)_ogg_calloc(vc->comments+1, sizeof(*vc->comment_lengths)); + + for(i=0;icomments;i++){ + int len=oggpack_read(opb,32); + if(len<0)goto err_out; + vc->comment_lengths[i]=len; + vc->user_comments[i]=(char *)_ogg_calloc(len+1,1); + _v_readstring(opb,vc->user_comments[i],len); + } + if(oggpack_read(opb,1)!=1)goto err_out; /* EOP check */ + + return(0); + err_out: + vorbis_comment_clear(vc); + return(OV_EBADHEADER); +} + +/* all of the real encoding details are here. The modes, books, + everything */ +static int _vorbis_unpack_books(vorbis_info *vi,oggpack_buffer *opb){ + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + int i; + if(!ci)return(OV_EFAULT); + + /* codebooks */ + ci->books=oggpack_read(opb,8)+1; + /*ci->book_param=_ogg_calloc(ci->books,sizeof(*ci->book_param));*/ + for(i=0;ibooks;i++){ + ci->book_param[i]=(static_codebook *)_ogg_calloc(1,sizeof(*ci->book_param[i])); + if(vorbis_staticbook_unpack(opb,ci->book_param[i]))goto err_out; + } + + /* time backend settings */ + ci->times=oggpack_read(opb,6)+1; + /*ci->time_type=_ogg_malloc(ci->times*sizeof(*ci->time_type));*/ + /*ci->time_param=_ogg_calloc(ci->times,sizeof(void *));*/ + for(i=0;itimes;i++){ + ci->time_type[i]=oggpack_read(opb,16); + if(ci->time_type[i]<0 || ci->time_type[i]>=VI_TIMEB)goto err_out; + /* ci->time_param[i]=_time_P[ci->time_type[i]]->unpack(vi,opb); + Vorbis I has no time backend */ + /*if(!ci->time_param[i])goto err_out;*/ + } + + /* floor backend settings */ + ci->floors=oggpack_read(opb,6)+1; + /*ci->floor_type=_ogg_malloc(ci->floors*sizeof(*ci->floor_type));*/ + /*ci->floor_param=_ogg_calloc(ci->floors,sizeof(void *));*/ + for(i=0;ifloors;i++){ + ci->floor_type[i]=oggpack_read(opb,16); + if(ci->floor_type[i]<0 || ci->floor_type[i]>=VI_FLOORB)goto err_out; + ci->floor_param[i]=_floor_P[ci->floor_type[i]]->unpack(vi,opb); + if(!ci->floor_param[i])goto err_out; + } + + /* residue backend settings */ + ci->residues=oggpack_read(opb,6)+1; + /*ci->residue_type=_ogg_malloc(ci->residues*sizeof(*ci->residue_type));*/ + /*ci->residue_param=_ogg_calloc(ci->residues,sizeof(void *));*/ + for(i=0;iresidues;i++){ + ci->residue_type[i]=oggpack_read(opb,16); + if(ci->residue_type[i]<0 || ci->residue_type[i]>=VI_RESB)goto err_out; + ci->residue_param[i]=_residue_P[ci->residue_type[i]]->unpack(vi,opb); + if(!ci->residue_param[i])goto err_out; + } + + /* map backend settings */ + ci->maps=oggpack_read(opb,6)+1; + /*ci->map_type=_ogg_malloc(ci->maps*sizeof(*ci->map_type));*/ + /*ci->map_param=_ogg_calloc(ci->maps,sizeof(void *));*/ + for(i=0;imaps;i++){ + ci->map_type[i]=oggpack_read(opb,16); + if(ci->map_type[i]<0 || ci->map_type[i]>=VI_MAPB)goto err_out; + ci->map_param[i]=_mapping_P[ci->map_type[i]]->unpack(vi,opb); + if(!ci->map_param[i])goto err_out; + } + + /* mode settings */ + ci->modes=oggpack_read(opb,6)+1; + /*vi->mode_param=_ogg_calloc(vi->modes,sizeof(void *));*/ + for(i=0;imodes;i++){ + ci->mode_param[i]=(vorbis_info_mode *)_ogg_calloc(1,sizeof(*ci->mode_param[i])); + ci->mode_param[i]->blockflag=oggpack_read(opb,1); + ci->mode_param[i]->windowtype=oggpack_read(opb,16); + ci->mode_param[i]->transformtype=oggpack_read(opb,16); + ci->mode_param[i]->mapping=oggpack_read(opb,8); + + if(ci->mode_param[i]->windowtype>=VI_WINDOWB)goto err_out; + if(ci->mode_param[i]->transformtype>=VI_WINDOWB)goto err_out; + if(ci->mode_param[i]->mapping>=ci->maps)goto err_out; + } + + if(oggpack_read(opb,1)!=1)goto err_out; /* top level EOP check */ + + return(0); + err_out: + vorbis_info_clear(vi); + return(OV_EBADHEADER); +} + +/* The Vorbis header is in three packets; the initial small packet in + the first page that identifies basic parameters, a second packet + with bitstream comments and a third packet that holds the + codebook. */ + +int vorbis_synthesis_headerin(vorbis_info *vi,vorbis_comment *vc,ogg_packet *op){ + oggpack_buffer opb; + + if(op){ + oggpack_readinit(&opb,op->packet); + + /* Which of the three types of header is this? */ + /* Also verify header-ness, vorbis */ + { + char buffer[6]; + int packtype=oggpack_read(&opb,8); + memset(buffer,0,6); + _v_readstring(&opb,buffer,6); + if(memcmp(buffer,"vorbis",6)){ + /* not a vorbis header */ + return(OV_ENOTVORBIS); + } + switch(packtype){ + case 0x01: /* least significant *bit* is read first */ + if(!op->b_o_s){ + /* Not the initial packet */ + return(OV_EBADHEADER); + } + if(vi->rate!=0){ + /* previously initialized info header */ + return(OV_EBADHEADER); + } + + return(_vorbis_unpack_info(vi,&opb)); + + case 0x03: /* least significant *bit* is read first */ + if(vi->rate==0){ + /* um... we didn't get the initial header */ + return(OV_EBADHEADER); + } + + return(_vorbis_unpack_comment(vc,&opb)); + + case 0x05: /* least significant *bit* is read first */ + if(vi->rate==0 || vc->vendor==NULL){ + /* um... we didn;t get the initial header or comments yet */ + return(OV_EBADHEADER); + } + + return(_vorbis_unpack_books(vi,&opb)); + + default: + /* Not a valid vorbis header type */ + return(OV_EBADHEADER); + break; + } + } + } + return(OV_EBADHEADER); +} + diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/ivorbiscodec.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/ivorbiscodec.h Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,202 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: libvorbis codec headers + + ********************************************************************/ + +#ifndef _vorbis_codec_h_ +#define _vorbis_codec_h_ + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + +#include "ogg.h" + +typedef struct vorbis_info{ + int version; + int channels; + long rate; + + /* The below bitrate declarations are *hints*. + Combinations of the three values carry the following implications: + + all three set to the same value: + implies a fixed rate bitstream + only nominal set: + implies a VBR stream that averages the nominal bitrate. No hard + upper/lower limit + upper and or lower set: + implies a VBR bitstream that obeys the bitrate limits. nominal + may also be set to give a nominal rate. + none set: + the coder does not care to speculate. + */ + + long bitrate_upper; + long bitrate_nominal; + long bitrate_lower; + long bitrate_window; + + void *codec_setup; +} vorbis_info; + +/* vorbis_dsp_state buffers the current vorbis audio + analysis/synthesis state. The DSP state belongs to a specific + logical bitstream ****************************************************/ +typedef struct vorbis_dsp_state{ + int analysisp; + vorbis_info *vi; + + ogg_int32_t **pcm; + ogg_int32_t **pcmret; + int pcm_storage; + int pcm_current; + int pcm_returned; + + int preextrapolate; + int eofflag; + + long lW; + long W; + long nW; + long centerW; + + ogg_int64_t granulepos; + ogg_int64_t sequence; + + void *backend_state; +} vorbis_dsp_state; + +typedef struct vorbis_block{ + /* necessary stream state for linking to the framing abstraction */ + ogg_int32_t **pcm; /* this is a pointer into local storage */ + oggpack_buffer opb; + + long lW; + long W; + long nW; + int pcmend; + int mode; + + int eofflag; + ogg_int64_t granulepos; + ogg_int64_t sequence; + vorbis_dsp_state *vd; /* For read-only access of configuration */ + + /* local storage to avoid remallocing; it's up to the mapping to + structure it */ + void *localstore; + long localtop; + long localalloc; + long totaluse; + struct alloc_chain *reap; + +} vorbis_block; + +/* vorbis_block is a single block of data to be processed as part of +the analysis/synthesis stream; it belongs to a specific logical +bitstream, but is independant from other vorbis_blocks belonging to +that logical bitstream. *************************************************/ + +struct alloc_chain{ + void *ptr; + struct alloc_chain *next; +}; + +/* vorbis_info contains all the setup information specific to the + specific compression/decompression mode in progress (eg, + psychoacoustic settings, channel setup, options, codebook + etc). vorbis_info and substructures are in backends.h. +*********************************************************************/ + +/* the comments are not part of vorbis_info so that vorbis_info can be + static storage */ +typedef struct vorbis_comment{ + /* unlimited user comment fields. libvorbis writes 'libvorbis' + whatever vendor is set to in encode */ + char **user_comments; + int *comment_lengths; + int comments; + char *vendor; + +} vorbis_comment; + + +/* libvorbis encodes in two abstraction layers; first we perform DSP + and produce a packet (see docs/analysis.txt). The packet is then + coded into a framed OggSquish bitstream by the second layer (see + docs/framing.txt). Decode is the reverse process; we sync/frame + the bitstream and extract individual packets, then decode the + packet back into PCM audio. + + The extra framing/packetizing is used in streaming formats, such as + files. Over the net (such as with UDP), the framing and + packetization aren't necessary as they're provided by the transport + and the streaming layer is not used */ + +/* Vorbis PRIMITIVES: general ***************************************/ + +extern void vorbis_info_init(vorbis_info *vi); +extern void vorbis_info_clear(vorbis_info *vi); +extern int vorbis_info_blocksize(vorbis_info *vi,int zo); +extern void vorbis_comment_init(vorbis_comment *vc); +extern void vorbis_comment_add(vorbis_comment *vc, char *comment); +extern void vorbis_comment_add_tag(vorbis_comment *vc, + char *tag, char *contents); +extern char *vorbis_comment_query(vorbis_comment *vc, char *tag, int count); +extern int vorbis_comment_query_count(vorbis_comment *vc, char *tag); +extern void vorbis_comment_clear(vorbis_comment *vc); + +extern int vorbis_block_init(vorbis_dsp_state *v, vorbis_block *vb); +extern int vorbis_block_clear(vorbis_block *vb); +extern void vorbis_dsp_clear(vorbis_dsp_state *v); + +/* Vorbis PRIMITIVES: synthesis layer *******************************/ +extern int vorbis_synthesis_headerin(vorbis_info *vi,vorbis_comment *vc, + ogg_packet *op); + +extern int vorbis_synthesis_init(vorbis_dsp_state *v,vorbis_info *vi); +extern int vorbis_synthesis_restart(vorbis_dsp_state *v); +extern int vorbis_synthesis(vorbis_block *vb,ogg_packet *op,int decodep); +extern int vorbis_synthesis_blockin(vorbis_dsp_state *v,vorbis_block *vb); +extern int vorbis_synthesis_pcmout(vorbis_dsp_state *v,ogg_int32_t ***pcm); +extern int vorbis_synthesis_read(vorbis_dsp_state *v,int samples); +extern long vorbis_packet_blocksize(vorbis_info *vi,ogg_packet *op); + +/* Vorbis ERRORS and return codes ***********************************/ + +#define OV_FALSE -1 +#define OV_EOF -2 +#define OV_HOLE -3 + +#define OV_EREAD -128 +#define OV_EFAULT -129 +#define OV_EIMPL -130 +#define OV_EINVAL -131 +#define OV_ENOTVORBIS -132 +#define OV_EBADHEADER -133 +#define OV_EVERSION -134 +#define OV_ENOTAUDIO -135 +#define OV_EBADPACKET -136 +#define OV_EBADLINK -137 +#define OV_ENOSEEK -138 + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif + diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/ivorbisfile.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/ivorbisfile.h Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,130 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: stdio-based convenience library for opening/seeking/decoding + + ********************************************************************/ + +#ifndef _OV_FILE_H_ +#define _OV_FILE_H_ + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + +#include +#include "ivorbiscodec.h" + +#define CHUNKSIZE 1024 +/* The function prototypes for the callbacks are basically the same as for + * the stdio functions fread, fseek, fclose, ftell. + * The one difference is that the FILE * arguments have been replaced with + * a void * - this is to be used as a pointer to whatever internal data these + * functions might need. In the stdio case, it's just a FILE * cast to a void * + * + * If you use other functions, check the docs for these functions and return + * the right values. For seek_func(), you *MUST* return -1 if the stream is + * unseekable + */ +typedef struct { + size_t (*read_func) (void *ptr, size_t size, size_t nmemb, void *datasource); + int (*seek_func) (void *datasource, ogg_int64_t offset, int whence); + int (*close_func) (void *datasource); + long (*tell_func) (void *datasource); +} ov_callbacks; + +#define NOTOPEN 0 +#define PARTOPEN 1 +#define OPENED 2 +#define STREAMSET 3 +#define INITSET 4 + +typedef struct OggVorbis_File { + void *datasource; /* Pointer to a FILE *, etc. */ + int seekable; + ogg_int64_t offset; + ogg_int64_t end; + ogg_sync_state *oy; + + /* If the FILE handle isn't seekable (eg, a pipe), only the current + stream appears */ + int links; + ogg_int64_t *offsets; + ogg_int64_t *dataoffsets; + ogg_uint32_t *serialnos; + ogg_int64_t *pcmlengths; + vorbis_info *vi; + vorbis_comment *vc; + + /* Decoding working state local storage */ + ogg_int64_t pcm_offset; + int ready_state; + ogg_uint32_t current_serialno; + int current_link; + + ogg_int64_t bittrack; + ogg_int64_t samptrack; + + ogg_stream_state *os; /* take physical pages, weld into a logical + stream of packets */ + vorbis_dsp_state vd; /* central working state for the packet->PCM decoder */ + vorbis_block vb; /* local working space for packet->PCM decode */ + + ov_callbacks callbacks; + +} OggVorbis_File; + +extern int ov_clear(OggVorbis_File *vf); +extern int ov_open(FILE *f,OggVorbis_File *vf,char *initial,long ibytes); +extern int ov_open_callbacks(void *datasource, OggVorbis_File *vf, + char *initial, long ibytes, ov_callbacks callbacks); + +extern int ov_test(FILE *f,OggVorbis_File *vf,char *initial,long ibytes); +extern int ov_test_callbacks(void *datasource, OggVorbis_File *vf, + char *initial, long ibytes, ov_callbacks callbacks); +extern int ov_test_open(OggVorbis_File *vf); + +extern long ov_bitrate(OggVorbis_File *vf,int i); +extern long ov_bitrate_instant(OggVorbis_File *vf); +extern long ov_streams(OggVorbis_File *vf); +extern long ov_seekable(OggVorbis_File *vf); +extern long ov_serialnumber(OggVorbis_File *vf,int i); + +extern ogg_int64_t ov_raw_total(OggVorbis_File *vf,int i); +extern ogg_int64_t ov_pcm_total(OggVorbis_File *vf,int i); +extern ogg_int64_t ov_time_total(OggVorbis_File *vf,int i); + +extern int ov_raw_seek(OggVorbis_File *vf,ogg_int64_t pos); +extern int ov_pcm_seek(OggVorbis_File *vf,ogg_int64_t pos); +extern int ov_pcm_seek_page(OggVorbis_File *vf,ogg_int64_t pos); +extern int ov_time_seek(OggVorbis_File *vf,ogg_int64_t pos); +extern int ov_time_seek_page(OggVorbis_File *vf,ogg_int64_t pos); + +extern ogg_int64_t ov_raw_tell(OggVorbis_File *vf); +extern ogg_int64_t ov_pcm_tell(OggVorbis_File *vf); +extern ogg_int64_t ov_time_tell(OggVorbis_File *vf); + +extern vorbis_info *ov_info(OggVorbis_File *vf,int link); +extern vorbis_comment *ov_comment(OggVorbis_File *vf,int link); + +extern long ov_read(OggVorbis_File *vf,char *buffer,int length, + int *bitstream); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif + + diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/ivorbisfile_example.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/ivorbisfile_example.c Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,86 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: simple example decoder using vorbisidec + + ********************************************************************/ + +/* Takes a vorbis bitstream from stdin and writes raw stereo PCM to + stdout using vorbisfile. Using vorbisfile is much simpler than + dealing with libvorbis. */ + +#include +#include +#include +#include + +#ifdef _WIN32 /* We need the following two to set stdin/stdout to binary */ +#include +#include +#endif + +char pcmout[4096]; /* take 4k out of the data segment, not the stack */ + +int main(){ + OggVorbis_File vf; + int eof=0; + int current_section; + +#ifdef _WIN32 /* We need to set stdin/stdout to binary mode. Damn windows. */ + /* Beware the evil ifdef. We avoid these where we can, but this one we + cannot. Don't add any more, you'll probably go to hell if you do. */ + _setmode( _fileno( stdin ), _O_BINARY ); + _setmode( _fileno( stdout ), _O_BINARY ); +#endif + + if(ov_open(stdin, &vf, NULL, 0) < 0) { + fprintf(stderr,"Input does not appear to be an Ogg bitstream.\n"); + exit(1); + } + + /* Throw the comments plus a few lines about the bitstream we're + decoding */ + { + char **ptr=ov_comment(&vf,-1)->user_comments; + vorbis_info *vi=ov_info(&vf,-1); + while(*ptr){ + fprintf(stderr,"%s\n",*ptr); + ++ptr; + } + fprintf(stderr,"\nBitstream is %d channel, %ldHz\n",vi->channels,vi->rate); + fprintf(stderr,"\nDecoded length: %ld samples\n", + (long)ov_pcm_total(&vf,-1)); + fprintf(stderr,"Encoded by: %s\n\n",ov_comment(&vf,-1)->vendor); + } + + while(!eof){ + long ret=ov_read(&vf,pcmout,sizeof(pcmout),¤t_section); + if (ret == 0) { + /* EOF */ + eof=1; + } else if (ret < 0) { + /* error in the stream. Not a problem, just reporting it in + case we (the app) cares. In this case, we don't. */ + } else { + /* we don't bother dealing with sample rate changes, etc, but + you'll have to*/ + fwrite(pcmout,1,ret,stdout); + } + } + + /* cleanup */ + ov_clear(&vf); + + fprintf(stderr,"Done.\n"); + return(0); +} diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/lsp_lookup.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/lsp_lookup.h Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,136 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: lookup data + + ********************************************************************/ + +#ifndef _V_LOOKUP_DATA_H_ +#define _V_LOOKUP_DATA_H_ + +#include "os_types.h" + +#define FROMdB_LOOKUP_SZ 35 +#define FROMdB2_LOOKUP_SZ 32 +#define FROMdB_SHIFT 5 +#define FROMdB2_SHIFT 3 +#define FROMdB2_MASK 31 + +static const ogg_int32_t FROMdB_LOOKUP[FROMdB_LOOKUP_SZ]={ + 0x003fffff, 0x0028619b, 0x00197a96, 0x0010137a, + 0x000a24b0, 0x00066666, 0x000409c3, 0x00028c42, + 0x00019b8c, 0x000103ab, 0x0000a3d7, 0x00006760, + 0x0000413a, 0x00002928, 0x000019f8, 0x00001062, + 0x00000a56, 0x00000686, 0x0000041e, 0x00000299, + 0x000001a3, 0x00000109, 0x000000a7, 0x00000069, + 0x00000042, 0x0000002a, 0x0000001a, 0x00000011, + 0x0000000b, 0x00000007, 0x00000004, 0x00000003, + 0x00000002, 0x00000001, 0x00000001}; + +static const ogg_int32_t FROMdB2_LOOKUP[FROMdB2_LOOKUP_SZ]={ + 0x000001fc, 0x000001f5, 0x000001ee, 0x000001e7, + 0x000001e0, 0x000001d9, 0x000001d2, 0x000001cc, + 0x000001c5, 0x000001bf, 0x000001b8, 0x000001b2, + 0x000001ac, 0x000001a6, 0x000001a0, 0x0000019a, + 0x00000194, 0x0000018e, 0x00000188, 0x00000183, + 0x0000017d, 0x00000178, 0x00000172, 0x0000016d, + 0x00000168, 0x00000163, 0x0000015e, 0x00000159, + 0x00000154, 0x0000014f, 0x0000014a, 0x00000145, +}; + +#define INVSQ_LOOKUP_I_SHIFT 10 +#define INVSQ_LOOKUP_I_MASK 1023 +static const long INVSQ_LOOKUP_I[64+1]={ + 92682, 91966, 91267, 90583, + 89915, 89261, 88621, 87995, + 87381, 86781, 86192, 85616, + 85051, 84497, 83953, 83420, + 82897, 82384, 81880, 81385, + 80899, 80422, 79953, 79492, + 79039, 78594, 78156, 77726, + 77302, 76885, 76475, 76072, + 75674, 75283, 74898, 74519, + 74146, 73778, 73415, 73058, + 72706, 72359, 72016, 71679, + 71347, 71019, 70695, 70376, + 70061, 69750, 69444, 69141, + 68842, 68548, 68256, 67969, + 67685, 67405, 67128, 66855, + 66585, 66318, 66054, 65794, + 65536, +}; + +static const long INVSQ_LOOKUP_IDel[64]={ + 716, 699, 684, 668, + 654, 640, 626, 614, + 600, 589, 576, 565, + 554, 544, 533, 523, + 513, 504, 495, 486, + 477, 469, 461, 453, + 445, 438, 430, 424, + 417, 410, 403, 398, + 391, 385, 379, 373, + 368, 363, 357, 352, + 347, 343, 337, 332, + 328, 324, 319, 315, + 311, 306, 303, 299, + 294, 292, 287, 284, + 280, 277, 273, 270, + 267, 264, 260, 258, +}; + +#define COS_LOOKUP_I_SHIFT 9 +#define COS_LOOKUP_I_MASK 511 +#define COS_LOOKUP_I_SZ 128 +static const ogg_int32_t COS_LOOKUP_I[COS_LOOKUP_I_SZ+1]={ + 16384, 16379, 16364, 16340, + 16305, 16261, 16207, 16143, + 16069, 15986, 15893, 15791, + 15679, 15557, 15426, 15286, + 15137, 14978, 14811, 14635, + 14449, 14256, 14053, 13842, + 13623, 13395, 13160, 12916, + 12665, 12406, 12140, 11866, + 11585, 11297, 11003, 10702, + 10394, 10080, 9760, 9434, + 9102, 8765, 8423, 8076, + 7723, 7366, 7005, 6639, + 6270, 5897, 5520, 5139, + 4756, 4370, 3981, 3590, + 3196, 2801, 2404, 2006, + 1606, 1205, 804, 402, + 0, -401, -803, -1204, + -1605, -2005, -2403, -2800, + -3195, -3589, -3980, -4369, + -4755, -5138, -5519, -5896, + -6269, -6638, -7004, -7365, + -7722, -8075, -8422, -8764, + -9101, -9433, -9759, -10079, + -10393, -10701, -11002, -11296, + -11584, -11865, -12139, -12405, + -12664, -12915, -13159, -13394, + -13622, -13841, -14052, -14255, + -14448, -14634, -14810, -14977, + -15136, -15285, -15425, -15556, + -15678, -15790, -15892, -15985, + -16068, -16142, -16206, -16260, + -16304, -16339, -16363, -16378, + -16383, +}; + +#endif + + + + + diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/mapping0.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/mapping0.c Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,322 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: channel mapping 0 implementation + + ********************************************************************/ + +#include +#include +#include +#include +#include "ogg.h" +#include "ivorbiscodec.h" +#include "mdct.h" +#include "codec_internal.h" +#include "codebook.h" +#include "window.h" +#include "registry.h" +#include "misc.h" + +/* simplistic, wasteful way of doing this (unique lookup for each + mode/submapping); there should be a central repository for + identical lookups. That will require minor work, so I'm putting it + off as low priority. + + Why a lookup for each backend in a given mode? Because the + blocksize is set by the mode, and low backend lookups may require + parameters from other areas of the mode/mapping */ + +typedef struct { + vorbis_info_mode *mode; + vorbis_info_mapping0 *map; + + vorbis_look_floor **floor_look; + + vorbis_look_residue **residue_look; + + vorbis_func_floor **floor_func; + vorbis_func_residue **residue_func; + + int ch; + long lastframe; /* if a different mode is called, we need to + invalidate decay */ +} vorbis_look_mapping0; + +static void mapping0_free_info(vorbis_info_mapping *i){ + vorbis_info_mapping0 *info=(vorbis_info_mapping0 *)i; + if(info){ + memset(info,0,sizeof(*info)); + _ogg_free(info); + } +} + +static void mapping0_free_look(vorbis_look_mapping *look){ + int i; + vorbis_look_mapping0 *l=(vorbis_look_mapping0 *)look; + if(l){ + + for(i=0;imap->submaps;i++){ + l->floor_func[i]->free_look(l->floor_look[i]); + l->residue_func[i]->free_look(l->residue_look[i]); + } + + _ogg_free(l->floor_func); + _ogg_free(l->residue_func); + _ogg_free(l->floor_look); + _ogg_free(l->residue_look); + memset(l,0,sizeof(*l)); + _ogg_free(l); + } +} + +static vorbis_look_mapping *mapping0_look(vorbis_dsp_state *vd,vorbis_info_mode *vm, + vorbis_info_mapping *m){ + int i; + vorbis_info *vi=vd->vi; + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + vorbis_look_mapping0 *look=(vorbis_look_mapping0 *)_ogg_calloc(1,sizeof(*look)); + vorbis_info_mapping0 *info=look->map=(vorbis_info_mapping0 *)m; + look->mode=vm; + + look->floor_look=(vorbis_look_floor **)_ogg_calloc(info->submaps,sizeof(*look->floor_look)); + + look->residue_look=(vorbis_look_residue **)_ogg_calloc(info->submaps,sizeof(*look->residue_look)); + + look->floor_func=(vorbis_func_floor **)_ogg_calloc(info->submaps,sizeof(*look->floor_func)); + look->residue_func=(vorbis_func_residue **)_ogg_calloc(info->submaps,sizeof(*look->residue_func)); + + for(i=0;isubmaps;i++){ + int floornum=info->floorsubmap[i]; + int resnum=info->residuesubmap[i]; + + look->floor_func[i]=_floor_P[ci->floor_type[floornum]]; + look->floor_look[i]=look->floor_func[i]-> + look(vd,vm,ci->floor_param[floornum]); + look->residue_func[i]=_residue_P[ci->residue_type[resnum]]; + look->residue_look[i]=look->residue_func[i]-> + look(vd,vm,ci->residue_param[resnum]); + + } + + look->ch=vi->channels; + + return(look); +} + +static int ilog(unsigned int v){ + int ret=0; + if(v)--v; + while(v){ + ret++; + v>>=1; + } + return(ret); +} + +/* also responsible for range checking */ +static vorbis_info_mapping *mapping0_unpack(vorbis_info *vi,oggpack_buffer *opb){ + int i; + vorbis_info_mapping0 *info=(vorbis_info_mapping0 *)_ogg_calloc(1,sizeof(*info)); + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + memset(info,0,sizeof(*info)); + + if(oggpack_read(opb,1)) + info->submaps=oggpack_read(opb,4)+1; + else + info->submaps=1; + + if(oggpack_read(opb,1)){ + info->coupling_steps=oggpack_read(opb,8)+1; + + for(i=0;icoupling_steps;i++){ + int testM=info->coupling_mag[i]=oggpack_read(opb,ilog(vi->channels)); + int testA=info->coupling_ang[i]=oggpack_read(opb,ilog(vi->channels)); + + if(testM<0 || + testA<0 || + testM==testA || + testM>=vi->channels || + testA>=vi->channels) goto err_out; + } + + } + + if(oggpack_read(opb,2)>0)goto err_out; /* 2,3:reserved */ + + if(info->submaps>1){ + for(i=0;ichannels;i++){ + info->chmuxlist[i]=oggpack_read(opb,4); + if(info->chmuxlist[i]>=info->submaps)goto err_out; + } + } + for(i=0;isubmaps;i++){ + int temp=oggpack_read(opb,8); + if(temp>=ci->times)goto err_out; + info->floorsubmap[i]=oggpack_read(opb,8); + if(info->floorsubmap[i]>=ci->floors)goto err_out; + info->residuesubmap[i]=oggpack_read(opb,8); + if(info->residuesubmap[i]>=ci->residues)goto err_out; + } + + return info; + + err_out: + mapping0_free_info(info); + return(NULL); +} + +static int seq=0; +static int mapping0_inverse(vorbis_block *vb,vorbis_look_mapping *l){ + vorbis_dsp_state *vd=vb->vd; + vorbis_info *vi=vd->vi; + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + private_state *b=(private_state *)vd->backend_state; + vorbis_look_mapping0 *look=(vorbis_look_mapping0 *)l; + vorbis_info_mapping0 *info=look->map; + + int i,j; + long n=vb->pcmend=ci->blocksizes[vb->W]; + + ogg_int32_t **pcmbundle=(ogg_int32_t **)alloca(sizeof(*pcmbundle)*vi->channels); + int *zerobundle=(int *)alloca(sizeof(*zerobundle)*vi->channels); + + int *nonzero =(int *)alloca(sizeof(*nonzero)*vi->channels); + void **floormemo=(void **)alloca(sizeof(*floormemo)*vi->channels); + + /* time domain information decode (note that applying the + information would have to happen later; we'll probably add a + function entry to the harness for that later */ + /* NOT IMPLEMENTED */ + + /* recover the spectral envelope; store it in the PCM vector for now */ + for(i=0;ichannels;i++){ + int submap=info->chmuxlist[i]; + floormemo[i]=look->floor_func[submap]-> + inverse1(vb,look->floor_look[submap]); + if(floormemo[i]) + nonzero[i]=1; + else + nonzero[i]=0; + memset(vb->pcm[i],0,sizeof(*vb->pcm[i])*n/2); + } + + /* channel coupling can 'dirty' the nonzero listing */ + for(i=0;icoupling_steps;i++){ + if(nonzero[info->coupling_mag[i]] || + nonzero[info->coupling_ang[i]]){ + nonzero[info->coupling_mag[i]]=1; + nonzero[info->coupling_ang[i]]=1; + } + } + + /* recover the residue into our working vectors */ + for(i=0;isubmaps;i++){ + int ch_in_bundle=0; + for(j=0;jchannels;j++){ + if(info->chmuxlist[j]==i){ + if(nonzero[j]) + zerobundle[ch_in_bundle]=1; + else + zerobundle[ch_in_bundle]=0; + pcmbundle[ch_in_bundle++]=vb->pcm[j]; + } + } + + look->residue_func[i]->inverse(vb,look->residue_look[i], + pcmbundle,zerobundle,ch_in_bundle); + } + + //for(j=0;jchannels;j++) + //_analysis_output("coupled",seq+j,vb->pcm[j],-8,n/2,0,0); + + + /* channel coupling */ + for(i=info->coupling_steps-1;i>=0;i--){ + ogg_int32_t *pcmM=vb->pcm[info->coupling_mag[i]]; + ogg_int32_t *pcmA=vb->pcm[info->coupling_ang[i]]; + + for(j=0;j0) + if(ang>0){ + pcmM[j]=mag; + pcmA[j]=mag-ang; + }else{ + pcmA[j]=mag; + pcmM[j]=mag+ang; + } + else + if(ang>0){ + pcmM[j]=mag; + pcmA[j]=mag+ang; + }else{ + pcmA[j]=mag; + pcmM[j]=mag-ang; + } + } + } + + //for(j=0;jchannels;j++) + //_analysis_output("residue",seq+j,vb->pcm[j],-8,n/2,0,0); + + /* compute and apply spectral envelope */ + for(i=0;ichannels;i++){ + ogg_int32_t *pcm=vb->pcm[i]; + int submap=info->chmuxlist[i]; + look->floor_func[submap]-> + inverse2(vb,look->floor_look[submap],floormemo[i],pcm); + } + + //for(j=0;jchannels;j++) + //_analysis_output("mdct",seq+j,vb->pcm[j],-24,n/2,0,1); + + /* transform the PCM data; takes PCM vector, vb; modifies PCM vector */ + /* only MDCT right now.... */ + for(i=0;ichannels;i++){ + ogg_int32_t *pcm=vb->pcm[i]; + mdct_backward(n,pcm,pcm); + } + + //for(j=0;jchannels;j++) + //_analysis_output("imdct",seq+j,vb->pcm[j],-24,n,0,0); + + /* window the data */ + for(i=0;ichannels;i++){ + ogg_int32_t *pcm=vb->pcm[i]; + if(nonzero[i]) + _vorbis_apply_window(pcm,b->window,ci->blocksizes,vb->lW,vb->W,vb->nW); + else + for(j=0;jchannels;j++) + //_analysis_output("window",seq+j,vb->pcm[j],-24,n,0,0); + + seq+=vi->channels; + /* all done! */ + return(0); +} + +/* export hooks */ +vorbis_func_mapping mapping0_exportbundle={ + &mapping0_unpack, + &mapping0_look, + &mapping0_free_info, + &mapping0_free_look, + &mapping0_inverse +}; diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/mdct.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/mdct.c Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,510 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: normalized modified discrete cosine transform + power of two length transform only [64 <= n ] + last mod: $Id: mdct.c,v 1.9 2002/10/16 09:17:39 xiphmont Exp $ + + Original algorithm adapted long ago from _The use of multirate filter + banks for coding of high quality digital audio_, by T. Sporer, + K. Brandenburg and B. Edler, collection of the European Signal + Processing Conference (EUSIPCO), Amsterdam, June 1992, Vol.1, pp + 211-214 + + The below code implements an algorithm that no longer looks much like + that presented in the paper, but the basic structure remains if you + dig deep enough to see it. + + This module DOES NOT INCLUDE code to generate/apply the window + function. Everybody has their own weird favorite including me... I + happen to like the properties of y=sin(.5PI*sin^2(x)), but others may + vehemently disagree. + + ********************************************************************/ + +#include "ivorbiscodec.h" +#include "codebook.h" +#include "misc.h" +#include "mdct.h" +#include "mdct_lookup.h" + + +/* 8 point butterfly (in place) */ +STIN void mdct_butterfly_8(DATA_TYPE *x){ + + REG_TYPE r0 = x[4] + x[0]; + REG_TYPE r1 = x[4] - x[0]; + REG_TYPE r2 = x[5] + x[1]; + REG_TYPE r3 = x[5] - x[1]; + REG_TYPE r4 = x[6] + x[2]; + REG_TYPE r5 = x[6] - x[2]; + REG_TYPE r6 = x[7] + x[3]; + REG_TYPE r7 = x[7] - x[3]; + + x[0] = r5 + r3; + x[1] = r7 - r1; + x[2] = r5 - r3; + x[3] = r7 + r1; + x[4] = r4 - r0; + x[5] = r6 - r2; + x[6] = r4 + r0; + x[7] = r6 + r2; + MB(); +} + +/* 16 point butterfly (in place, 4 register) */ +STIN void mdct_butterfly_16(DATA_TYPE *x){ + + REG_TYPE r0, r1; + + r0 = x[ 0] - x[ 8]; x[ 8] += x[ 0]; + r1 = x[ 1] - x[ 9]; x[ 9] += x[ 1]; + x[ 0] = MULT31((r0 + r1) , cPI2_8); + x[ 1] = MULT31((r1 - r0) , cPI2_8); + MB(); + + r0 = x[10] - x[ 2]; x[10] += x[ 2]; + r1 = x[ 3] - x[11]; x[11] += x[ 3]; + x[ 2] = r1; x[ 3] = r0; + MB(); + + r0 = x[12] - x[ 4]; x[12] += x[ 4]; + r1 = x[13] - x[ 5]; x[13] += x[ 5]; + x[ 4] = MULT31((r0 - r1) , cPI2_8); + x[ 5] = MULT31((r0 + r1) , cPI2_8); + MB(); + + r0 = x[14] - x[ 6]; x[14] += x[ 6]; + r1 = x[15] - x[ 7]; x[15] += x[ 7]; + x[ 6] = r0; x[ 7] = r1; + MB(); + + mdct_butterfly_8(x); + mdct_butterfly_8(x+8); +} + +/* 32 point butterfly (in place, 4 register) */ +STIN void mdct_butterfly_32(DATA_TYPE *x){ + + REG_TYPE r0, r1; + + r0 = x[30] - x[14]; x[30] += x[14]; + r1 = x[31] - x[15]; x[31] += x[15]; + x[14] = r0; x[15] = r1; + MB(); + + r0 = x[28] - x[12]; x[28] += x[12]; + r1 = x[29] - x[13]; x[29] += x[13]; + XNPROD31( r0, r1, cPI1_8, cPI3_8, &x[12], &x[13] ); + MB(); + + r0 = x[26] - x[10]; x[26] += x[10]; + r1 = x[27] - x[11]; x[27] += x[11]; + x[10] = MULT31((r0 - r1) , cPI2_8); + x[11] = MULT31((r0 + r1) , cPI2_8); + MB(); + + r0 = x[24] - x[ 8]; x[24] += x[ 8]; + r1 = x[25] - x[ 9]; x[25] += x[ 9]; + XNPROD31( r0, r1, cPI3_8, cPI1_8, &x[ 8], &x[ 9] ); + MB(); + + r0 = x[22] - x[ 6]; x[22] += x[ 6]; + r1 = x[ 7] - x[23]; x[23] += x[ 7]; + x[ 6] = r1; x[ 7] = r0; + MB(); + + r0 = x[ 4] - x[20]; x[20] += x[ 4]; + r1 = x[ 5] - x[21]; x[21] += x[ 5]; + XPROD31 ( r0, r1, cPI3_8, cPI1_8, &x[ 4], &x[ 5] ); + MB(); + + r0 = x[ 2] - x[18]; x[18] += x[ 2]; + r1 = x[ 3] - x[19]; x[19] += x[ 3]; + x[ 2] = MULT31((r1 + r0) , cPI2_8); + x[ 3] = MULT31((r1 - r0) , cPI2_8); + MB(); + + r0 = x[ 0] - x[16]; x[16] += x[ 0]; + r1 = x[ 1] - x[17]; x[17] += x[ 1]; + XPROD31 ( r0, r1, cPI1_8, cPI3_8, &x[ 0], &x[ 1] ); + MB(); + + mdct_butterfly_16(x); + mdct_butterfly_16(x+16); +} + +/* N/stage point generic N stage butterfly (in place, 2 register) */ +STIN void mdct_butterfly_generic(DATA_TYPE *x,int points,int step){ + + LOOKUP_T *T = sincos_lookup0; + DATA_TYPE *x1 = x + points - 8; + DATA_TYPE *x2 = x + (points>>1) - 8; + REG_TYPE r0; + REG_TYPE r1; + + do{ + r0 = x1[6] - x2[6]; x1[6] += x2[6]; + r1 = x2[7] - x1[7]; x1[7] += x2[7]; + XPROD31( r1, r0, T[0], T[1], &x2[6], &x2[7] ); T+=step; + + r0 = x1[4] - x2[4]; x1[4] += x2[4]; + r1 = x2[5] - x1[5]; x1[5] += x2[5]; + XPROD31( r1, r0, T[0], T[1], &x2[4], &x2[5] ); T+=step; + + r0 = x1[2] - x2[2]; x1[2] += x2[2]; + r1 = x2[3] - x1[3]; x1[3] += x2[3]; + XPROD31( r1, r0, T[0], T[1], &x2[2], &x2[3] ); T+=step; + + r0 = x1[0] - x2[0]; x1[0] += x2[0]; + r1 = x2[1] - x1[1]; x1[1] += x2[1]; + XPROD31( r1, r0, T[0], T[1], &x2[0], &x2[1] ); T+=step; + + x1-=8; x2-=8; + }while(Tsincos_lookup0); + do{ + r0 = x2[6] - x1[6]; x1[6] += x2[6]; + r1 = x2[7] - x1[7]; x1[7] += x2[7]; + XPROD31( r0, r1, T[0], T[1], &x2[6], &x2[7] ); T+=step; + + r0 = x2[4] - x1[4]; x1[4] += x2[4]; + r1 = x2[5] - x1[5]; x1[5] += x2[5]; + XPROD31( r0, r1, T[0], T[1], &x2[4], &x2[5] ); T+=step; + + r0 = x2[2] - x1[2]; x1[2] += x2[2]; + r1 = x2[3] - x1[3]; x1[3] += x2[3]; + XPROD31( r0, r1, T[0], T[1], &x2[2], &x2[3] ); T+=step; + + r0 = x2[0] - x1[0]; x1[0] += x2[0]; + r1 = x2[1] - x1[1]; x1[1] += x2[1]; + XPROD31( r0, r1, T[0], T[1], &x2[0], &x2[1] ); T+=step; + + x1-=8; x2-=8; + }while(Tsincos_lookup0); +} + +STIN void mdct_butterflies(DATA_TYPE *x,int points,int shift){ + + int stages=8-shift; + int i,j; + + for(i=0;--stages>0;i++){ + for(j=0;j<(1<>i)*j,points>>i,4<<(i+shift)); + } + + for(j=0;j>8]|(bitrev[(x&0x0f0)>>4]<<4)|(((int)bitrev[x&0x00f])<<8); +} + +STIN void mdct_bitreverse(DATA_TYPE *x,int n,int step,int shift){ + + int bit = 0; + DATA_TYPE *w0 = x; + DATA_TYPE *w1 = x = w0+(n>>1); + LOOKUP_T *T = (step>=4)?(sincos_lookup0+(step>>1)):sincos_lookup1; + LOOKUP_T *Ttop = T+1024; + DATA_TYPE r2; + + do{ + DATA_TYPE r3 = bitrev12(bit++); + DATA_TYPE *x0 = x + ((r3 ^ 0xfff)>>shift) -1; + DATA_TYPE *x1 = x + (r3>>shift); + + REG_TYPE r0 = x0[0] + x1[0]; + REG_TYPE r1 = x1[1] - x0[1]; + + XPROD32( r0, r1, T[1], T[0], &r2, &r3 ); T+=step; + + w1 -= 4; + + r0 = (x0[1] + x1[1])>>1; + r1 = (x0[0] - x1[0])>>1; + w0[0] = r0 + r2; + w0[1] = r1 + r3; + w1[2] = r0 - r2; + w1[3] = r3 - r1; + + r3 = bitrev12(bit++); + x0 = x + ((r3 ^ 0xfff)>>shift) -1; + x1 = x + (r3>>shift); + + r0 = x0[0] + x1[0]; + r1 = x1[1] - x0[1]; + + XPROD32( r0, r1, T[1], T[0], &r2, &r3 ); T+=step; + + r0 = (x0[1] + x1[1])>>1; + r1 = (x0[0] - x1[0])>>1; + w0[2] = r0 + r2; + w0[3] = r1 + r3; + w1[0] = r0 - r2; + w1[1] = r3 - r1; + + w0 += 4; + }while(T>shift) -1; + DATA_TYPE *x1 = x + (r3>>shift); + + REG_TYPE r0 = x0[0] + x1[0]; + REG_TYPE r1 = x1[1] - x0[1]; + + T-=step; XPROD32( r0, r1, T[0], T[1], &r2, &r3 ); + + w1 -= 4; + + r0 = (x0[1] + x1[1])>>1; + r1 = (x0[0] - x1[0])>>1; + w0[0] = r0 + r2; + w0[1] = r1 + r3; + w1[2] = r0 - r2; + w1[3] = r3 - r1; + + r3 = bitrev12(bit++); + x0 = x + ((r3 ^ 0xfff)>>shift) -1; + x1 = x + (r3>>shift); + + r0 = x0[0] + x1[0]; + r1 = x1[1] - x0[1]; + + T-=step; XPROD32( r0, r1, T[0], T[1], &r2, &r3 ); + + r0 = (x0[1] + x1[1])>>1; + r1 = (x0[0] - x1[0])>>1; + w0[2] = r0 + r2; + w0[3] = r1 + r3; + w1[0] = r0 - r2; + w1[1] = r3 - r1; + + w0 += 4; + }while(w0>1; + int n4=n>>2; + DATA_TYPE *iX; + DATA_TYPE *oX; + LOOKUP_T *T; + LOOKUP_T *V; + int shift; + int step; + + for (shift=6;!(n&(1<=in+n4); + do{ + oX-=4; + XPROD31( iX[4], iX[6], T[1], T[0], &oX[2], &oX[3] ); T-=step; + XPROD31( iX[0], iX[2], T[1], T[0], &oX[0], &oX[1] ); T-=step; + iX-=8; + }while(iX>=in); + + iX = in+n2-8; + oX = out+n2+n4; + T = sincos_lookup0; + + do{ + T+=step; XNPROD31( iX[6], iX[4], T[0], T[1], &oX[0], &oX[1] ); + T+=step; XNPROD31( iX[2], iX[0], T[0], T[1], &oX[2], &oX[3] ); + iX-=8; + oX+=4; + }while(iX>=in+n4); + do{ + T-=step; XNPROD31( iX[6], iX[4], T[1], T[0], &oX[0], &oX[1] ); + T-=step; XNPROD31( iX[2], iX[0], T[1], T[0], &oX[2], &oX[3] ); + iX-=8; + oX+=4; + }while(iX>=in); + + mdct_butterflies(out+n2,n2,shift); + mdct_bitreverse(out,n,step,shift); + + /* rotate + window */ + + step>>=2; + { + DATA_TYPE *oX1=out+n2+n4; + DATA_TYPE *oX2=out+n2+n4; + DATA_TYPE *iX =out; + + switch(step) { + default: { + T=(step>=4)?(sincos_lookup0+(step>>1)):sincos_lookup1; + do{ + oX1-=4; + XPROD31( iX[0], -iX[1], T[0], T[1], &oX1[3], &oX2[0] ); T+=step; + XPROD31( iX[2], -iX[3], T[0], T[1], &oX1[2], &oX2[1] ); T+=step; + XPROD31( iX[4], -iX[5], T[0], T[1], &oX1[1], &oX2[2] ); T+=step; + XPROD31( iX[6], -iX[7], T[0], T[1], &oX1[0], &oX2[3] ); T+=step; + oX2+=4; + iX+=8; + }while(iX>1; + t1 = (*T++)>>1; + do{ + oX1-=4; + + t0 += (v0 = (*V++)>>1); + t1 += (v1 = (*V++)>>1); + XPROD31( iX[0], -iX[1], t0, t1, &oX1[3], &oX2[0] ); + v0 += (t0 = (*T++)>>1); + v1 += (t1 = (*T++)>>1); + XPROD31( iX[2], -iX[3], v0, v1, &oX1[2], &oX2[1] ); + t0 += (v0 = (*V++)>>1); + t1 += (v1 = (*V++)>>1); + XPROD31( iX[4], -iX[5], t0, t1, &oX1[1], &oX2[2] ); + v0 += (t0 = (*T++)>>1); + v1 += (t1 = (*T++)>>1); + XPROD31( iX[6], -iX[7], v0, v1, &oX1[0], &oX2[3] ); + + oX2+=4; + iX+=8; + }while(iX>2); + t1 += (q1 = (v1-t1)>>2); + XPROD31( iX[0], -iX[1], t0, t1, &oX1[3], &oX2[0] ); + t0 = v0-q0; + t1 = v1-q1; + XPROD31( iX[2], -iX[3], t0, t1, &oX1[2], &oX2[1] ); + + t0 = *T++; + t1 = *T++; + v0 += (q0 = (t0-v0)>>2); + v1 += (q1 = (t1-v1)>>2); + XPROD31( iX[4], -iX[5], v0, v1, &oX1[1], &oX2[2] ); + v0 = t0-q0; + v1 = t1-q1; + XPROD31( iX[6], -iX[7], v0, v1, &oX1[0], &oX2[3] ); + + oX2+=4; + iX+=8; + }while(iXoX2); + } +} + diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/mdct.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/mdct.h Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,52 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: modified discrete cosine transform prototypes + + ********************************************************************/ + +#ifndef _OGG_mdct_H_ +#define _OGG_mdct_H_ + +#include "ivorbiscodec.h" +#include "misc.h" + +#define DATA_TYPE ogg_int32_t +#define REG_TYPE register ogg_int32_t + +#ifdef _LOW_ACCURACY_ +#define cPI3_8 (0x0062) +#define cPI2_8 (0x00b5) +#define cPI1_8 (0x00ed) +#else +#define cPI3_8 (0x30fbc54d) +#define cPI2_8 (0x5a82799a) +#define cPI1_8 (0x7641af3d) +#endif + +extern void mdct_forward(int n, DATA_TYPE *in, DATA_TYPE *out); +extern void mdct_backward(int n, DATA_TYPE *in, DATA_TYPE *out); + +#endif + + + + + + + + + + + + diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/mdct_lookup.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/mdct_lookup.h Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,540 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: sin,cos lookup tables + + ********************************************************************/ + +#include "os_types.h" + +/* {sin(2*i*PI/4096), cos(2*i*PI/4096)}, with i = 0 to 512 */ +static LOOKUP_T sincos_lookup0[1026] = { + X(0x00000000), X(0x7fffffff), X(0x003243f5), X(0x7ffff621), + X(0x006487e3), X(0x7fffd886), X(0x0096cbc1), X(0x7fffa72c), + X(0x00c90f88), X(0x7fff6216), X(0x00fb5330), X(0x7fff0943), + X(0x012d96b1), X(0x7ffe9cb2), X(0x015fda03), X(0x7ffe1c65), + X(0x01921d20), X(0x7ffd885a), X(0x01c45ffe), X(0x7ffce093), + X(0x01f6a297), X(0x7ffc250f), X(0x0228e4e2), X(0x7ffb55ce), + X(0x025b26d7), X(0x7ffa72d1), X(0x028d6870), X(0x7ff97c18), + X(0x02bfa9a4), X(0x7ff871a2), X(0x02f1ea6c), X(0x7ff75370), + 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X(0x49b41533), X(0x68a69e81), X(0x49dd282a), X(0x6889a4f6), + X(0x4a062fbd), X(0x686c9b4b), X(0x4a2f2be6), X(0x684f8186), + X(0x4a581c9e), X(0x683257ab), X(0x4a8101de), X(0x68151dbe), + X(0x4aa9dba2), X(0x67f7d3c5), X(0x4ad2a9e2), X(0x67da79c3), + X(0x4afb6c98), X(0x67bd0fbd), X(0x4b2423be), X(0x679f95b7), + X(0x4b4ccf4d), X(0x67820bb7), X(0x4b756f40), X(0x676471c0), + X(0x4b9e0390), X(0x6746c7d8), X(0x4bc68c36), X(0x67290e02), + X(0x4bef092d), X(0x670b4444), X(0x4c177a6e), X(0x66ed6aa1), + X(0x4c3fdff4), X(0x66cf8120), X(0x4c6839b7), X(0x66b187c3), + X(0x4c9087b1), X(0x66937e91), X(0x4cb8c9dd), X(0x6675658c), + X(0x4ce10034), X(0x66573cbb), X(0x4d092ab0), X(0x66390422), + X(0x4d31494b), X(0x661abbc5), X(0x4d595bfe), X(0x65fc63a9), + X(0x4d8162c4), X(0x65ddfbd3), X(0x4da95d96), X(0x65bf8447), + X(0x4dd14c6e), X(0x65a0fd0b), X(0x4df92f46), X(0x65826622), + X(0x4e210617), X(0x6563bf92), X(0x4e48d0dd), X(0x6545095f), + X(0x4e708f8f), X(0x6526438f), X(0x4e984229), X(0x65076e25), + X(0x4ebfe8a5), X(0x64e88926), X(0x4ee782fb), X(0x64c99498), + X(0x4f0f1126), X(0x64aa907f), X(0x4f369320), X(0x648b7ce0), + X(0x4f5e08e3), X(0x646c59bf), X(0x4f857269), X(0x644d2722), + X(0x4faccfab), X(0x642de50d), X(0x4fd420a4), X(0x640e9386), + X(0x4ffb654d), X(0x63ef3290), X(0x50229da1), X(0x63cfc231), + X(0x5049c999), X(0x63b0426d), X(0x5070e92f), X(0x6390b34a), + X(0x5097fc5e), X(0x637114cc), X(0x50bf031f), X(0x635166f9), + X(0x50e5fd6d), X(0x6331a9d4), X(0x510ceb40), X(0x6311dd64), + X(0x5133cc94), X(0x62f201ac), X(0x515aa162), X(0x62d216b3), + X(0x518169a5), X(0x62b21c7b), X(0x51a82555), X(0x6292130c), + X(0x51ced46e), X(0x6271fa69), X(0x51f576ea), X(0x6251d298), + X(0x521c0cc2), X(0x62319b9d), X(0x524295f0), X(0x6211557e), + X(0x5269126e), X(0x61f1003f), X(0x528f8238), X(0x61d09be5), + X(0x52b5e546), X(0x61b02876), X(0x52dc3b92), X(0x618fa5f7), + X(0x53028518), X(0x616f146c), X(0x5328c1d0), X(0x614e73da), + X(0x534ef1b5), X(0x612dc447), X(0x537514c2), X(0x610d05b7), + X(0x539b2af0), X(0x60ec3830), X(0x53c13439), X(0x60cb5bb7), + X(0x53e73097), X(0x60aa7050), X(0x540d2005), X(0x60897601), + X(0x5433027d), X(0x60686ccf), X(0x5458d7f9), X(0x604754bf), + X(0x547ea073), X(0x60262dd6), X(0x54a45be6), X(0x6004f819), + X(0x54ca0a4b), X(0x5fe3b38d), X(0x54efab9c), X(0x5fc26038), + X(0x55153fd4), X(0x5fa0fe1f), X(0x553ac6ee), X(0x5f7f8d46), + X(0x556040e2), X(0x5f5e0db3), X(0x5585adad), X(0x5f3c7f6b), + X(0x55ab0d46), X(0x5f1ae274), X(0x55d05faa), X(0x5ef936d1), + X(0x55f5a4d2), X(0x5ed77c8a), X(0x561adcb9), X(0x5eb5b3a2), + X(0x56400758), X(0x5e93dc1f), X(0x566524aa), X(0x5e71f606), + X(0x568a34a9), X(0x5e50015d), X(0x56af3750), X(0x5e2dfe29), + X(0x56d42c99), X(0x5e0bec6e), X(0x56f9147e), X(0x5de9cc33), + X(0x571deefa), X(0x5dc79d7c), X(0x5742bc06), X(0x5da5604f), + X(0x57677b9d), X(0x5d8314b1), X(0x578c2dba), X(0x5d60baa7), + X(0x57b0d256), X(0x5d3e5237), X(0x57d5696d), X(0x5d1bdb65), + X(0x57f9f2f8), X(0x5cf95638), X(0x581e6ef1), X(0x5cd6c2b5), + X(0x5842dd54), X(0x5cb420e0), X(0x58673e1b), X(0x5c9170bf), + X(0x588b9140), X(0x5c6eb258), X(0x58afd6bd), X(0x5c4be5b0), + X(0x58d40e8c), X(0x5c290acc), X(0x58f838a9), X(0x5c0621b2), + X(0x591c550e), X(0x5be32a67), X(0x594063b5), X(0x5bc024f0), + X(0x59646498), X(0x5b9d1154), X(0x598857b2), X(0x5b79ef96), + X(0x59ac3cfd), X(0x5b56bfbd), X(0x59d01475), X(0x5b3381ce), + X(0x59f3de12), X(0x5b1035cf), X(0x5a1799d1), X(0x5aecdbc5), + X(0x5a3b47ab), X(0x5ac973b5), X(0x5a5ee79a), X(0x5aa5fda5), + X(0x5a82799a), X(0x5a82799a) + }; + + /* {sin((2*i+1)*PI/4096), cos((2*i+1)*PI/4096)}, with i = 0 to 511 */ +static LOOKUP_T sincos_lookup1[1024] = { + X(0x001921fb), X(0x7ffffd88), X(0x004b65ee), X(0x7fffe9cb), + X(0x007da9d4), X(0x7fffc251), X(0x00afeda8), X(0x7fff8719), + X(0x00e23160), X(0x7fff3824), X(0x011474f6), X(0x7ffed572), + X(0x0146b860), X(0x7ffe5f03), X(0x0178fb99), X(0x7ffdd4d7), + X(0x01ab3e97), X(0x7ffd36ee), X(0x01dd8154), X(0x7ffc8549), + X(0x020fc3c6), X(0x7ffbbfe6), X(0x024205e8), X(0x7ffae6c7), + X(0x027447b0), X(0x7ff9f9ec), X(0x02a68917), X(0x7ff8f954), + X(0x02d8ca16), X(0x7ff7e500), X(0x030b0aa4), X(0x7ff6bcf0), + X(0x033d4abb), X(0x7ff58125), X(0x036f8a51), X(0x7ff4319d), + X(0x03a1c960), X(0x7ff2ce5b), X(0x03d407df), X(0x7ff1575d), + X(0x040645c7), X(0x7fefcca4), X(0x04388310), X(0x7fee2e30), + X(0x046abfb3), X(0x7fec7c02), X(0x049cfba7), X(0x7feab61a), + X(0x04cf36e5), X(0x7fe8dc78), X(0x05017165), X(0x7fe6ef1c), + X(0x0533ab20), X(0x7fe4ee06), X(0x0565e40d), X(0x7fe2d938), + X(0x05981c26), X(0x7fe0b0b1), X(0x05ca5361), X(0x7fde7471), + X(0x05fc89b8), X(0x7fdc247a), X(0x062ebf22), X(0x7fd9c0ca), + X(0x0660f398), X(0x7fd74964), X(0x06932713), X(0x7fd4be46), + X(0x06c5598a), X(0x7fd21f72), X(0x06f78af6), X(0x7fcf6ce8), + X(0x0729bb4e), X(0x7fcca6a7), X(0x075bea8c), X(0x7fc9ccb2), + X(0x078e18a7), X(0x7fc6df08), X(0x07c04598), X(0x7fc3dda9), + X(0x07f27157), X(0x7fc0c896), X(0x08249bdd), X(0x7fbd9fd0), + X(0x0856c520), X(0x7fba6357), X(0x0888ed1b), X(0x7fb7132b), + X(0x08bb13c5), X(0x7fb3af4e), X(0x08ed3916), X(0x7fb037bf), + X(0x091f5d06), X(0x7facac7f), X(0x09517f8f), X(0x7fa90d8e), + X(0x0983a0a7), X(0x7fa55aee), X(0x09b5c048), X(0x7fa1949e), + X(0x09e7de6a), X(0x7f9dbaa0), X(0x0a19fb04), X(0x7f99ccf4), + X(0x0a4c1610), X(0x7f95cb9a), X(0x0a7e2f85), X(0x7f91b694), + X(0x0ab0475c), X(0x7f8d8de1), X(0x0ae25d8d), X(0x7f895182), + X(0x0b147211), X(0x7f850179), X(0x0b4684df), X(0x7f809dc5), + X(0x0b7895f0), X(0x7f7c2668), X(0x0baaa53b), X(0x7f779b62), + X(0x0bdcb2bb), X(0x7f72fcb4), X(0x0c0ebe66), X(0x7f6e4a5e), + X(0x0c40c835), X(0x7f698461), X(0x0c72d020), X(0x7f64aabf), + X(0x0ca4d620), X(0x7f5fbd77), X(0x0cd6da2d), X(0x7f5abc8a), + X(0x0d08dc3f), X(0x7f55a7fa), X(0x0d3adc4e), X(0x7f507fc7), + X(0x0d6cda53), X(0x7f4b43f2), X(0x0d9ed646), X(0x7f45f47b), + X(0x0dd0d01f), X(0x7f409164), X(0x0e02c7d7), X(0x7f3b1aad), + X(0x0e34bd66), X(0x7f359057), X(0x0e66b0c3), X(0x7f2ff263), + X(0x0e98a1e9), X(0x7f2a40d2), X(0x0eca90ce), X(0x7f247ba5), + X(0x0efc7d6b), X(0x7f1ea2dc), X(0x0f2e67b8), X(0x7f18b679), + X(0x0f604faf), X(0x7f12b67c), X(0x0f923546), X(0x7f0ca2e7), + X(0x0fc41876), X(0x7f067bba), X(0x0ff5f938), X(0x7f0040f6), + X(0x1027d784), X(0x7ef9f29d), X(0x1059b352), X(0x7ef390ae), + X(0x108b8c9b), X(0x7eed1b2c), X(0x10bd6356), X(0x7ee69217), + X(0x10ef377d), X(0x7edff570), X(0x11210907), X(0x7ed94538), + X(0x1152d7ed), X(0x7ed28171), X(0x1184a427), X(0x7ecbaa1a), + X(0x11b66dad), X(0x7ec4bf36), X(0x11e83478), X(0x7ebdc0c6), + X(0x1219f880), X(0x7eb6aeca), X(0x124bb9be), X(0x7eaf8943), + X(0x127d7829), X(0x7ea85033), X(0x12af33ba), X(0x7ea1039b), + X(0x12e0ec6a), X(0x7e99a37c), X(0x1312a230), X(0x7e922fd6), + X(0x13445505), X(0x7e8aa8ac), X(0x137604e2), X(0x7e830dff), + X(0x13a7b1bf), X(0x7e7b5fce), X(0x13d95b93), X(0x7e739e1d), + X(0x140b0258), X(0x7e6bc8eb), X(0x143ca605), X(0x7e63e03b), + X(0x146e4694), X(0x7e5be40c), X(0x149fe3fc), X(0x7e53d462), + X(0x14d17e36), X(0x7e4bb13c), X(0x1503153a), X(0x7e437a9c), + X(0x1534a901), X(0x7e3b3083), X(0x15663982), X(0x7e32d2f4), + X(0x1597c6b7), X(0x7e2a61ed), X(0x15c95097), X(0x7e21dd73), + X(0x15fad71b), X(0x7e194584), X(0x162c5a3b), X(0x7e109a24), + X(0x165dd9f0), X(0x7e07db52), X(0x168f5632), X(0x7dff0911), + X(0x16c0cef9), X(0x7df62362), X(0x16f2443e), X(0x7ded2a47), + X(0x1723b5f9), X(0x7de41dc0), X(0x17552422), X(0x7ddafdce), + X(0x17868eb3), X(0x7dd1ca75), X(0x17b7f5a3), X(0x7dc883b4), + X(0x17e958ea), X(0x7dbf298d), X(0x181ab881), X(0x7db5bc02), + X(0x184c1461), X(0x7dac3b15), X(0x187d6c82), X(0x7da2a6c6), + X(0x18aec0db), X(0x7d98ff17), X(0x18e01167), X(0x7d8f4409), + X(0x19115e1c), X(0x7d85759f), X(0x1942a6f3), X(0x7d7b93da), + X(0x1973ebe6), X(0x7d719eba), X(0x19a52ceb), X(0x7d679642), + X(0x19d669fc), X(0x7d5d7a74), X(0x1a07a311), X(0x7d534b50), + X(0x1a38d823), X(0x7d4908d9), X(0x1a6a0929), X(0x7d3eb30f), + X(0x1a9b361d), X(0x7d3449f5), X(0x1acc5ef6), X(0x7d29cd8c), + X(0x1afd83ad), X(0x7d1f3dd6), 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DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: miscellaneous math and prototypes + + ********************************************************************/ + +#ifndef _V_RANDOM_H_ +#define _V_RANDOM_H_ +#include "ivorbiscodec.h" +#include "os.h" + +#include "asm_arm.h" +#include /* for abs() */ + +#ifndef _V_WIDE_MATH +#define _V_WIDE_MATH + +#ifndef _LOW_ACCURACY_ +/* 64 bit multiply */ + +#if !(defined WIN32 && defined WINCE) +#include +#endif + +#if BYTE_ORDER==LITTLE_ENDIAN +union magic { + struct { + ogg_int32_t lo; + ogg_int32_t hi; + } halves; + ogg_int64_t whole; +}; +#endif + +#if BYTE_ORDER==BIG_ENDIAN +union magic { + struct { + ogg_int32_t hi; + ogg_int32_t lo; + } halves; + ogg_int64_t whole; +}; +#endif + +STIN ogg_int32_t MULT32(ogg_int32_t x, ogg_int32_t y) { + union magic magic; + magic.whole = (ogg_int64_t)x * y; + return magic.halves.hi; +} + +STIN ogg_int32_t MULT31(ogg_int32_t x, ogg_int32_t y) { + return MULT32(x,y)<<1; +} + +STIN ogg_int32_t MULT31_SHIFT15(ogg_int32_t x, ogg_int32_t y) { + union magic magic; + magic.whole = (ogg_int64_t)x * y; + return ((ogg_uint32_t)(magic.halves.lo)>>15) | ((magic.halves.hi)<<17); +} + +#else +/* 32 bit multiply, more portable but less accurate */ + +/* + * Note: Precision is biased towards the first argument therefore ordering + * is important. Shift values were chosen for the best sound quality after + * many listening tests. + */ + +/* + * For MULT32 and MULT31: The second argument is always a lookup table + * value already preshifted from 31 to 8 bits. We therefore take the + * opportunity to save on text space and use unsigned char for those + * tables in this case. + */ + +STIN ogg_int32_t MULT32(ogg_int32_t x, ogg_int32_t y) { + return (x >> 9) * y; /* y preshifted >>23 */ +} + +STIN ogg_int32_t MULT31(ogg_int32_t x, ogg_int32_t y) { + return (x >> 8) * y; /* y preshifted >>23 */ +} + +STIN ogg_int32_t MULT31_SHIFT15(ogg_int32_t x, ogg_int32_t y) { + return (x >> 6) * y; /* y preshifted >>9 */ +} + +#endif + +/* + * This should be used as a memory barrier, forcing all cached values in + * registers to wr writen back to memory. Might or might not be beneficial + * depending on the architecture and compiler. + */ +#define MB() + +/* + * The XPROD functions are meant to optimize the cross products found all + * over the place in mdct.c by forcing memory operation ordering to avoid + * unnecessary register reloads as soon as memory is being written to. + * However this is only beneficial on CPUs with a sane number of general + * purpose registers which exclude the Intel x86. On Intel, better let the + * compiler actually reload registers directly from original memory by using + * macros. + */ + +#ifdef __i386__ + +#define XPROD32(_a, _b, _t, _v, _x, _y) \ + { *(_x)=MULT32(_a,_t)+MULT32(_b,_v); \ + *(_y)=MULT32(_b,_t)-MULT32(_a,_v); } +#define XPROD31(_a, _b, _t, _v, _x, _y) \ + { *(_x)=MULT31(_a,_t)+MULT31(_b,_v); \ + *(_y)=MULT31(_b,_t)-MULT31(_a,_v); } +#define XNPROD31(_a, _b, _t, _v, _x, _y) \ + { *(_x)=MULT31(_a,_t)-MULT31(_b,_v); \ + *(_y)=MULT31(_b,_t)+MULT31(_a,_v); } + +#else + +STIN void XPROD32(ogg_int32_t a, ogg_int32_t b, + ogg_int32_t t, ogg_int32_t v, + ogg_int32_t *x, ogg_int32_t *y) +{ + *x = MULT32(a, t) + MULT32(b, v); + *y = MULT32(b, t) - MULT32(a, v); +} + +STIN void XPROD31(ogg_int32_t a, ogg_int32_t b, + ogg_int32_t t, ogg_int32_t v, + ogg_int32_t *x, ogg_int32_t *y) +{ + *x = MULT31(a, t) + MULT31(b, v); + *y = MULT31(b, t) - MULT31(a, v); +} + +STIN void XNPROD31(ogg_int32_t a, ogg_int32_t b, + ogg_int32_t t, ogg_int32_t v, + ogg_int32_t *x, ogg_int32_t *y) +{ + *x = MULT31(a, t) - MULT31(b, v); + *y = MULT31(b, t) + MULT31(a, v); +} + +#endif + +#endif + +#ifndef _V_CLIP_MATH +#define _V_CLIP_MATH + +STIN ogg_int32_t CLIP_TO_15(ogg_int32_t x) { + int ret=x; + ret-= ((x<=32767)-1)&(x-32767); + ret-= ((x>=-32768)-1)&(x+32768); + return(ret); +} + +#endif + +STIN ogg_int32_t VFLOAT_MULT(ogg_int32_t a,ogg_int32_t ap, + ogg_int32_t b,ogg_int32_t bp, + ogg_int32_t *p){ + if(a && b){ +#ifndef _LOW_ACCURACY_ + *p=ap+bp+32; + return MULT32(a,b); +#else + *p=ap+bp+31; + return (a>>15)*(b>>16); +#endif + }else + return 0; +} + +int _ilog(unsigned int); + +STIN ogg_int32_t VFLOAT_MULTI(ogg_int32_t a,ogg_int32_t ap, + ogg_int32_t i, + ogg_int32_t *p){ + + int ip=_ilog(abs(i))-31; + return VFLOAT_MULT(a,ap,i<<-ip,ip,p); +} + +STIN ogg_int32_t VFLOAT_ADD(ogg_int32_t a,ogg_int32_t ap, + ogg_int32_t b,ogg_int32_t bp, + ogg_int32_t *p){ + + if(!a){ + *p=bp; + return b; + }else if(!b){ + *p=ap; + return a; + } + + /* yes, this can leak a bit. */ + if(ap>bp){ + int shift=ap-bp+1; + *p=ap+1; + a>>=1; + if(shift<32){ + b=(b+(1<<(shift-1)))>>shift; + }else{ + b=0; + } + }else{ + int shift=bp-ap+1; + *p=bp+1; + b>>=1; + if(shift<32){ + a=(a+(1<<(shift-1)))>>shift; + }else{ + a=0; + } + } + + a+=b; + if((a&0xc0000000)==0xc0000000 || + (a&0xc0000000)==0){ + a<<=1; + (*p)--; + } + return(a); +} + +#endif + + + + diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/ogg.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/ogg.h Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,206 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: subsumed libogg includes + + ********************************************************************/ +#ifndef _OGG_H +#define _OGG_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include "os_types.h" + +typedef struct ogg_buffer_state{ + struct ogg_buffer *unused_buffers; + struct ogg_reference *unused_references; + int outstanding; + int shutdown; +} ogg_buffer_state; + +typedef struct ogg_buffer { + unsigned char *data; + long size; + int refcount; + + union { + ogg_buffer_state *owner; + struct ogg_buffer *next; + } ptr; +} ogg_buffer; + +typedef struct ogg_reference { + ogg_buffer *buffer; + long begin; + long length; + + struct ogg_reference *next; +} ogg_reference; + +typedef struct oggpack_buffer { + int headbit; + unsigned char *headptr; + long headend; + + /* memory management */ + ogg_reference *head; + ogg_reference *tail; + + /* render the byte/bit counter API constant time */ + long count; /* doesn't count the tail */ +} oggpack_buffer; + +typedef struct oggbyte_buffer { + ogg_reference *baseref; + + ogg_reference *ref; + unsigned char *ptr; + long pos; + long end; +} oggbyte_buffer; + +typedef struct ogg_sync_state { + /* decode memory management pool */ + ogg_buffer_state *bufferpool; + + /* stream buffers */ + ogg_reference *fifo_head; + ogg_reference *fifo_tail; + long fifo_fill; + + /* stream sync management */ + int unsynced; + int headerbytes; + int bodybytes; + +} ogg_sync_state; + +typedef struct ogg_stream_state { + ogg_reference *header_head; + ogg_reference *header_tail; + ogg_reference *body_head; + ogg_reference *body_tail; + + int e_o_s; /* set when we have buffered the last + packet in the logical bitstream */ + int b_o_s; /* set after we've written the initial page + of a logical bitstream */ + long serialno; + long pageno; + ogg_int64_t packetno; /* sequence number for decode; the framing + knows where there's a hole in the data, + but we need coupling so that the codec + (which is in a seperate abstraction + layer) also knows about the gap */ + ogg_int64_t granulepos; + + int lacing_fill; + ogg_uint32_t body_fill; + + /* decode-side state data */ + int holeflag; + int spanflag; + int clearflag; + int laceptr; + ogg_uint32_t body_fill_next; + +} ogg_stream_state; + +typedef struct { + ogg_reference *packet; + long bytes; + long b_o_s; + long e_o_s; + ogg_int64_t granulepos; + ogg_int64_t packetno; /* sequence number for decode; the framing + knows where there's a hole in the data, + but we need coupling so that the codec + (which is in a seperate abstraction + layer) also knows about the gap */ +} ogg_packet; + +typedef struct { + ogg_reference *header; + int header_len; + ogg_reference *body; + long body_len; +} ogg_page; + +/* Ogg BITSTREAM PRIMITIVES: bitstream ************************/ + +extern void oggpack_readinit(oggpack_buffer *b,ogg_reference *r); +extern long oggpack_look(oggpack_buffer *b,int bits); +extern void oggpack_adv(oggpack_buffer *b,int bits); +extern long oggpack_read(oggpack_buffer *b,int bits); +extern long oggpack_bytes(oggpack_buffer *b); +extern long oggpack_bits(oggpack_buffer *b); +extern int oggpack_eop(oggpack_buffer *b); + +/* Ogg BITSTREAM PRIMITIVES: decoding **************************/ + +extern ogg_sync_state *ogg_sync_create(void); +extern int ogg_sync_destroy(ogg_sync_state *oy); +extern int ogg_sync_reset(ogg_sync_state *oy); + +extern unsigned char *ogg_sync_bufferin(ogg_sync_state *oy, long size); +extern int ogg_sync_wrote(ogg_sync_state *oy, long bytes); +extern long ogg_sync_pageseek(ogg_sync_state *oy,ogg_page *og); +extern int ogg_sync_pageout(ogg_sync_state *oy, ogg_page *og); +extern int ogg_stream_pagein(ogg_stream_state *os, ogg_page *og); +extern int ogg_stream_packetout(ogg_stream_state *os,ogg_packet *op); +extern int ogg_stream_packetpeek(ogg_stream_state *os,ogg_packet *op); + +/* Ogg BITSTREAM PRIMITIVES: general ***************************/ + +extern ogg_stream_state *ogg_stream_create(int serialno); +extern int ogg_stream_destroy(ogg_stream_state *os); +extern int ogg_stream_reset(ogg_stream_state *os); +extern int ogg_stream_reset_serialno(ogg_stream_state *os,int serialno); +extern int ogg_stream_eos(ogg_stream_state *os); + +extern int ogg_page_checksum_set(ogg_page *og); + +extern int ogg_page_version(ogg_page *og); +extern int ogg_page_continued(ogg_page *og); +extern int ogg_page_bos(ogg_page *og); +extern int ogg_page_eos(ogg_page *og); +extern ogg_int64_t ogg_page_granulepos(ogg_page *og); +extern ogg_uint32_t ogg_page_serialno(ogg_page *og); +extern ogg_uint32_t ogg_page_pageno(ogg_page *og); +extern int ogg_page_packets(ogg_page *og); +extern int ogg_page_getbuffer(ogg_page *og, unsigned char **buffer); + +extern int ogg_packet_release(ogg_packet *op); +extern int ogg_page_release(ogg_page *og); + +extern void ogg_page_dup(ogg_page *d, ogg_page *s); + +/* Ogg BITSTREAM PRIMITIVES: return codes ***************************/ + +#define OGG_SUCCESS 0 + +#define OGG_HOLE -10 +#define OGG_SPAN -11 +#define OGG_EVERSION -12 +#define OGG_ESERIAL -13 +#define OGG_EINVAL -14 +#define OGG_EEOS -15 + + +#ifdef __cplusplus +} +#endif + +#endif /* _OGG_H */ diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/os.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/os.h Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,64 @@ +#ifndef _OS_H +#define _OS_H +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: #ifdef jail to whip a few platforms into the UNIX ideal. + + ********************************************************************/ + +#include +#include "os_types.h" + +#ifndef _V_IFDEFJAIL_H_ +# define _V_IFDEFJAIL_H_ + +# ifdef __GNUC__ +# define STIN static __inline__ +# elif _WIN32 +# define STIN static __inline +# endif +#else +# define STIN static +#endif + +#ifndef M_PI +# define M_PI (3.1415926536f) +#endif + +#ifdef _WIN32 +# include +# define rint(x) (floor((x)+0.5f)) +# define NO_FLOAT_MATH_LIB +# define FAST_HYPOT(a, b) sqrt((a)*(a) + (b)*(b)) +# define LITTLE_ENDIAN 1 +# define BYTE_ORDER LITTLE_ENDIAN +#endif + +#ifdef HAVE_ALLOCA_H +# include +#endif + +#ifdef USE_MEMORY_H +# include +#endif + +#ifndef min +# define min(x,y) ((x)>(y)?(y):(x)) +#endif + +#ifndef max +# define max(x,y) ((x)<(y)?(y):(x)) +#endif + +#endif /* _OS_H */ diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/os_types.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/os_types.h Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,88 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: #ifdef jail to whip a few platforms into the UNIX ideal. + + ********************************************************************/ +#ifndef _OS_TYPES_H +#define _OS_TYPES_H + +#ifdef _LOW_ACCURACY_ +# define X(n) (((((n)>>22)+1)>>1) - ((((n)>>22)+1)>>9)) +# define LOOKUP_T const unsigned char +#else +# define X(n) (n) +# define LOOKUP_T const ogg_int32_t +#endif + +/* make it easy on the folks that want to compile the libs with a + different malloc than stdlib */ +#define _ogg_malloc malloc +#define _ogg_calloc calloc +#define _ogg_realloc realloc +#define _ogg_free free + +#ifdef _WIN32 + +# ifndef __GNUC__ + /* MSVC/Borland */ + typedef __int64 ogg_int64_t; + typedef __int32 ogg_int32_t; + typedef unsigned __int32 ogg_uint32_t; + typedef __int16 ogg_int16_t; +# else + /* Cygwin */ + #include <_G_config.h> + typedef _G_int64_t ogg_int64_t; + typedef _G_int32_t ogg_int32_t; + typedef _G_uint32_t ogg_uint32_t; + typedef _G_int16_t ogg_int16_t; +# endif + +#elif defined(__MACOS__) + +# include + typedef SInt16 ogg_int16_t; + typedef SInt32 ogg_int32_t; + typedef UInt32 ogg_uint32_t; + typedef SInt64 ogg_int64_t; + +#elif (defined(__APPLE__) && defined(__MACH__)) /* MacOS X Framework build */ + +# include + typedef int16_t ogg_int16_t; + typedef int32_t ogg_int32_t; + typedef u_int32_t ogg_uint32_t; + typedef int64_t ogg_int64_t; + +#elif defined(__BEOS__) + + /* Be */ +# include + +#elif defined (__EMX__) + + /* OS/2 GCC */ + typedef short ogg_int16_t; + typedef int ogg_int32_t; + typedef unsigned int ogg_uint32_t; + typedef long long ogg_int64_t; + +#else + +# include +# include "config_types.h" + +#endif + +#endif /* _OS_TYPES_H */ diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/registry.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/registry.c Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,50 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: registry for floor, res backends and channel mappings + + ********************************************************************/ + +#include "ivorbiscodec.h" +#include "codec_internal.h" +#include "registry.h" +#include "misc.h" + + +/* seems like major overkill now; the backend numbers will grow into + the infrastructure soon enough */ + +extern vorbis_func_floor floor0_exportbundle; +extern vorbis_func_floor floor1_exportbundle; +extern vorbis_func_residue residue0_exportbundle; +extern vorbis_func_residue residue1_exportbundle; +extern vorbis_func_residue residue2_exportbundle; +extern vorbis_func_mapping mapping0_exportbundle; + +vorbis_func_floor *_floor_P[]={ + &floor0_exportbundle, + &floor1_exportbundle, +}; + +vorbis_func_residue *_residue_P[]={ + &residue0_exportbundle, + &residue1_exportbundle, + &residue2_exportbundle, +}; + +vorbis_func_mapping *_mapping_P[]={ + &mapping0_exportbundle, +}; + + + diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/registry.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/registry.h Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,40 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: registry for time, floor, res backends and channel mappings + + ********************************************************************/ + +#ifndef _V_REG_H_ +#define _V_REG_H_ + +#define VI_TRANSFORMB 1 +#define VI_WINDOWB 1 +#define VI_TIMEB 1 +#define VI_FLOORB 2 +#define VI_RESB 3 +#define VI_MAPB 1 + +#include "backends.h" + +#if defined(_WIN32) && defined(VORBISDLL_IMPORT) +# define EXTERN __declspec(dllimport) extern +#else +# define EXTERN extern +#endif + +EXTERN vorbis_func_floor *_floor_P[]; +EXTERN vorbis_func_residue *_residue_P[]; +EXTERN vorbis_func_mapping *_mapping_P[]; + +#endif diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/res012.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/res012.c Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,342 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: residue backend 0, 1 and 2 implementation + + ********************************************************************/ + +#include +#include +#include +#include "ogg.h" +#include "ivorbiscodec.h" +#include "codec_internal.h" +#include "registry.h" +#include "codebook.h" +#include "misc.h" +#include "os.h" +#include "block.h" + +typedef struct { + vorbis_info_residue0 *info; + int map; + + int parts; + int stages; + codebook *fullbooks; + codebook *phrasebook; + codebook ***partbooks; + + int partvals; + int **decodemap; + +} vorbis_look_residue0; + +void res0_free_info(vorbis_info_residue *i){ + vorbis_info_residue0 *info=(vorbis_info_residue0 *)i; + if(info){ + memset(info,0,sizeof(*info)); + _ogg_free(info); + } +} + +void res0_free_look(vorbis_look_residue *i){ + int j; + if(i){ + + vorbis_look_residue0 *look=(vorbis_look_residue0 *)i; + + for(j=0;jparts;j++) + if(look->partbooks[j])_ogg_free(look->partbooks[j]); + _ogg_free(look->partbooks); + for(j=0;jpartvals;j++) + _ogg_free(look->decodemap[j]); + _ogg_free(look->decodemap); + + memset(look,0,sizeof(*look)); + _ogg_free(look); + } +} + +static int ilog(unsigned int v){ + int ret=0; + while(v){ + ret++; + v>>=1; + } + return(ret); +} + +static int icount(unsigned int v){ + int ret=0; + while(v){ + ret+=v&1; + v>>=1; + } + return(ret); +} + +/* vorbis_info is for range checking */ +vorbis_info_residue *res0_unpack(vorbis_info *vi,oggpack_buffer *opb){ + int j,acc=0; + vorbis_info_residue0 *info=(vorbis_info_residue0 *)_ogg_calloc(1,sizeof(*info)); + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + + info->begin=oggpack_read(opb,24); + info->end=oggpack_read(opb,24); + info->grouping=oggpack_read(opb,24)+1; + info->partitions=oggpack_read(opb,6)+1; + info->groupbook=oggpack_read(opb,8); + + for(j=0;jpartitions;j++){ + int cascade=oggpack_read(opb,3); + if(oggpack_read(opb,1)) + cascade|=(oggpack_read(opb,5)<<3); + info->secondstages[j]=cascade; + + acc+=icount(cascade); + } + for(j=0;jbooklist[j]=oggpack_read(opb,8); + + if(info->groupbook>=ci->books)goto errout; + for(j=0;jbooklist[j]>=ci->books)goto errout; + + return(info); + errout: + res0_free_info(info); + return(NULL); +} + +vorbis_look_residue *res0_look(vorbis_dsp_state *vd,vorbis_info_mode *vm, + vorbis_info_residue *vr){ + vorbis_info_residue0 *info=(vorbis_info_residue0 *)vr; + vorbis_look_residue0 *look=(vorbis_look_residue0 *)_ogg_calloc(1,sizeof(*look)); + codec_setup_info *ci=(codec_setup_info *)vd->vi->codec_setup; + + int j,k,acc=0; + int dim; + int maxstage=0; + look->info=info; + look->map=vm->mapping; + + look->parts=info->partitions; + look->fullbooks=ci->fullbooks; + look->phrasebook=ci->fullbooks+info->groupbook; + dim=look->phrasebook->dim; + + look->partbooks=(codebook ***)_ogg_calloc(look->parts,sizeof(*look->partbooks)); + + for(j=0;jparts;j++){ + int stages=ilog(info->secondstages[j]); + if(stages){ + if(stages>maxstage)maxstage=stages; + look->partbooks[j]=(codebook **)_ogg_calloc(stages,sizeof(*look->partbooks[j])); + for(k=0;ksecondstages[j]&(1<partbooks[j][k]=ci->fullbooks+info->booklist[acc++]; +#ifdef TRAIN_RES + look->training_data[k][j]=calloc(look->partbooks[j][k]->entries, + sizeof(***look->training_data)); +#endif + } + } + } + + look->partvals=look->parts; + for(j=1;jpartvals*=look->parts; + look->stages=maxstage; + look->decodemap=(int **)_ogg_malloc(look->partvals*sizeof(*look->decodemap)); + for(j=0;jpartvals;j++){ + long val=j; + long mult=look->partvals/look->parts; + look->decodemap[j]=(int *)_ogg_malloc(dim*sizeof(*look->decodemap[j])); + for(k=0;kparts; + look->decodemap[j][k]=deco; + } + } + + return(look); +} + + +/* a truncated packet here just means 'stop working'; it's not an error */ +static int _01inverse(vorbis_block *vb,vorbis_look_residue *vl, + ogg_int32_t **in,int ch, + long (*decodepart)(codebook *, ogg_int32_t *, + oggpack_buffer *,int,int)){ + + long i,j,k,l,s; + vorbis_look_residue0 *look=(vorbis_look_residue0 *)vl; + vorbis_info_residue0 *info=look->info; + + /* move all this setup out later */ + int samples_per_partition=info->grouping; + int partitions_per_word=look->phrasebook->dim; + int max=vb->pcmend>>1; + int end=(info->endend:max); + int n=end-info->begin; + + if(n>0){ + int partvals=n/samples_per_partition; + int partwords=(partvals+partitions_per_word-1)/partitions_per_word; + int ***partword=(int ***)alloca(ch*sizeof(*partword)); + + for(j=0;jstages;s++){ + + /* each loop decodes on partition codeword containing + partitions_pre_word partitions */ + for(i=0,l=0;iphrasebook,&vb->opb); + if(temp==-1)goto eopbreak; + partword[j][l]=look->decodemap[temp]; + if(partword[j][l]==NULL)goto errout; + } + } + + /* now we decode residual values for the partitions */ + for(k=0;kbegin+i*samples_per_partition; + if(info->secondstages[partword[j][l][k]]&(1<partbooks[partword[j][l][k]][s]; + if(stagebook){ + if(decodepart(stagebook,in[j]+offset,&vb->opb, + samples_per_partition,-8)==-1)goto eopbreak; + } + } + } + } + } + } + errout: + eopbreak: + return(0); +} + +int res0_inverse(vorbis_block *vb,vorbis_look_residue *vl, + ogg_int32_t **in,int *nonzero,int ch){ + int i,used=0; + for(i=0;iinfo; + + /* move all this setup out later */ + int samples_per_partition=info->grouping; + int partitions_per_word=look->phrasebook->dim; + int max=(vb->pcmend*ch)>>1; + int end=(info->endend:max); + int n=end-info->begin; + + if(n>0){ + + int partvals=n/samples_per_partition; + int partwords=(partvals+partitions_per_word-1)/partitions_per_word; + int **partword=(int **)_vorbis_block_alloc(vb,partwords*sizeof(*partword)); + int beginoff=info->begin/ch; + + for(i=0;istages;s++){ + for(i=0,l=0;iphrasebook,&vb->opb); + if(temp==-1)goto eopbreak; + partword[l]=look->decodemap[temp]; + if(partword[l]==NULL)goto errout; + } + + /* now we decode residual values for the partitions */ + for(k=0;ksecondstages[partword[l][k]]&(1<partbooks[partword[l][k]][s]; + + if(stagebook){ + if(vorbis_book_decodevv_add(stagebook,in, + i*samples_per_partition+beginoff,ch, + &vb->opb, + samples_per_partition,-8)==-1) + goto eopbreak; + } + } + } + } + } + errout: + eopbreak: + return(0); +} + + +vorbis_func_residue residue0_exportbundle={ + &res0_unpack, + &res0_look, + &res0_free_info, + &res0_free_look, + &res0_inverse +}; + +vorbis_func_residue residue1_exportbundle={ + &res0_unpack, + &res0_look, + &res0_free_info, + &res0_free_look, + &res1_inverse +}; + +vorbis_func_residue residue2_exportbundle={ + &res0_unpack, + &res0_look, + &res0_free_info, + &res0_free_look, + &res2_inverse +}; diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/sharedbook.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/sharedbook.c Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,439 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: basic shared codebook operations + + ********************************************************************/ + +#include +#include +#include +#include "ogg.h" +#include "misc.h" +#include "ivorbiscodec.h" +#include "codebook.h" + +/**** pack/unpack helpers ******************************************/ +int _ilog(unsigned int v){ + int ret=0; + while(v){ + ret++; + v>>=1; + } + return(ret); +} + +/* 32 bit float (not IEEE; nonnormalized mantissa + + biased exponent) : neeeeeee eeemmmmm mmmmmmmm mmmmmmmm + Why not IEEE? It's just not that important here. */ + +#define VQ_FEXP 10 +#define VQ_FMAN 21 +#define VQ_FEXP_BIAS 768 /* bias toward values smaller than 1. */ + +static ogg_int32_t _float32_unpack(long val,int *point){ + long mant=val&0x1fffff; + int sign=val&0x80000000; + long exp =(val&0x7fe00000L)>>VQ_FMAN; + + exp-=(VQ_FMAN-1)+VQ_FEXP_BIAS; + + if(mant){ + while(!(mant&0x40000000)){ + mant<<=1; + exp-=1; + } + + if(sign)mant= -mant; + }else{ + sign=0; + exp=-9999; + } + + *point=exp; + return mant; +} + +/* given a list of word lengths, generate a list of codewords. Works + for length ordered or unordered, always assigns the lowest valued + codewords first. Extended to handle unused entries (length 0) */ +ogg_uint32_t *_make_words(long *l,long n,long sparsecount){ + long i,j,count=0; + ogg_uint32_t marker[33]; + ogg_uint32_t *r=(ogg_uint32_t *)_ogg_malloc((sparsecount?sparsecount:n)*sizeof(*r)); + memset(marker,0,sizeof(marker)); + + for(i=0;i0){ + ogg_uint32_t entry=marker[length]; + + /* when we claim a node for an entry, we also claim the nodes + below it (pruning off the imagined tree that may have dangled + from it) as well as blocking the use of any nodes directly + above for leaves */ + + /* update ourself */ + if(length<32 && (entry>>length)){ + /* error condition; the lengths must specify an overpopulated tree */ + _ogg_free(r); + return(NULL); + } + r[count++]=entry; + + /* Look to see if the next shorter marker points to the node + above. if so, update it and repeat. */ + { + for(j=length;j>0;j--){ + + if(marker[j]&1){ + /* have to jump branches */ + if(j==1) + marker[1]++; + else + marker[j]=marker[j-1]<<1; + break; /* invariant says next upper marker would already + have been moved if it was on the same path */ + } + marker[j]++; + } + } + + /* prune the tree; the implicit invariant says all the longer + markers were dangling from our just-taken node. Dangle them + from our *new* node. */ + for(j=length+1;j<33;j++) + if((marker[j]>>1) == entry){ + entry=marker[j]; + marker[j]=marker[j-1]<<1; + }else + break; + }else + if(sparsecount==0)count++; + } + + /* bitreverse the words because our bitwise packer/unpacker is LSb + endian */ + for(i=0,count=0;i>j)&1; + } + + if(sparsecount){ + if(l[i]) + r[count++]=temp; + }else + r[count++]=temp; + } + + return(r); +} + +/* there might be a straightforward one-line way to do the below + that's portable and totally safe against roundoff, but I haven't + thought of it. Therefore, we opt on the side of caution */ +long _book_maptype1_quantvals(const static_codebook *b){ + /* get us a starting hint, we'll polish it below */ + int bits=_ilog(b->entries); + int vals=b->entries>>((bits-1)*(b->dim-1)/b->dim); + + while(1){ + long acc=1; + long acc1=1; + int i; + for(i=0;idim;i++){ + acc*=vals; + acc1*=vals+1; + } + if(acc<=b->entries && acc1>b->entries){ + return(vals); + }else{ + if(acc>b->entries){ + vals--; + }else{ + vals++; + } + } + } +} + +/* different than what _book_unquantize does for mainline: + we repack the book in a fixed point format that shares the same + binary point. Upon first use, we can shift point if needed */ + +/* we need to deal with two map types: in map type 1, the values are + generated algorithmically (each column of the vector counts through + the values in the quant vector). in map type 2, all the values came + in in an explicit list. Both value lists must be unpacked */ + +ogg_int32_t *_book_unquantize(const static_codebook *b,int n,int *sparsemap, + int *maxpoint){ + long j,k,count=0; + if(b->maptype==1 || b->maptype==2){ + int quantvals; + int minpoint,delpoint; + ogg_int32_t mindel=_float32_unpack(b->q_min,&minpoint); + ogg_int32_t delta=_float32_unpack(b->q_delta,&delpoint); + ogg_int32_t *r=(ogg_int32_t *)_ogg_calloc(n*b->dim,sizeof(*r)); + int *rp=(int *)_ogg_calloc(n*b->dim,sizeof(*rp)); + + *maxpoint=minpoint; + + /* maptype 1 and 2 both use a quantized value vector, but + different sizes */ + switch(b->maptype){ + case 1: + /* most of the time, entries%dimensions == 0, but we need to be + well defined. We define that the possible vales at each + scalar is values == entries/dim. If entries%dim != 0, we'll + have 'too few' values (values*dimentries;j++){ + if((sparsemap && b->lengthlist[j]) || !sparsemap){ + ogg_int32_t last=0; + int lastpoint=0; + int indexdiv=1; + for(k=0;kdim;k++){ + int index= (j/indexdiv)%quantvals; + int point=0; + int val=VFLOAT_MULTI(delta,delpoint, + abs(b->quantlist[index]),&point); + + val=VFLOAT_ADD(mindel,minpoint,val,point,&point); + val=VFLOAT_ADD(last,lastpoint,val,point,&point); + + if(b->q_sequencep){ + last=val; + lastpoint=point; + } + + if(sparsemap){ + r[sparsemap[count]*b->dim+k]=val; + rp[sparsemap[count]*b->dim+k]=point; + }else{ + r[count*b->dim+k]=val; + rp[count*b->dim+k]=point; + } + if(*maxpointentries;j++){ + if((sparsemap && b->lengthlist[j]) || !sparsemap){ + ogg_int32_t last=0; + int lastpoint=0; + + for(k=0;kdim;k++){ + int point=0; + int val=VFLOAT_MULTI(delta,delpoint, + abs(b->quantlist[j*b->dim+k]),&point); + + val=VFLOAT_ADD(mindel,minpoint,val,point,&point); + val=VFLOAT_ADD(last,lastpoint,val,point,&point); + + if(b->q_sequencep){ + last=val; + lastpoint=point; + } + + if(sparsemap){ + r[sparsemap[count]*b->dim+k]=val; + rp[sparsemap[count]*b->dim+k]=point; + }else{ + r[count*b->dim+k]=val; + rp[count*b->dim+k]=point; + } + if(*maxpointdim;j++) + if(rp[j]<*maxpoint) + r[j]>>=*maxpoint-rp[j]; + + _ogg_free(rp); + return(r); + } + return(NULL); +} + +void vorbis_staticbook_clear(static_codebook *b){ + if(b->quantlist)_ogg_free(b->quantlist); + if(b->lengthlist)_ogg_free(b->lengthlist); + memset(b,0,sizeof(*b)); + +} + +void vorbis_staticbook_destroy(static_codebook *b){ + vorbis_staticbook_clear(b); + _ogg_free(b); +} + +void vorbis_book_clear(codebook *b){ + /* static book is not cleared; we're likely called on the lookup and + the static codebook belongs to the info struct */ + if(b->valuelist)_ogg_free(b->valuelist); + if(b->codelist)_ogg_free(b->codelist); + + if(b->dec_index)_ogg_free(b->dec_index); + if(b->dec_codelengths)_ogg_free(b->dec_codelengths); + if(b->dec_firsttable)_ogg_free(b->dec_firsttable); + + memset(b,0,sizeof(*b)); +} + +static ogg_uint32_t bitreverse(ogg_uint32_t x){ + x= ((x>>16)&0x0000ffffUL) | ((x<<16)&0xffff0000UL); + x= ((x>> 8)&0x00ff00ffUL) | ((x<< 8)&0xff00ff00UL); + x= ((x>> 4)&0x0f0f0f0fUL) | ((x<< 4)&0xf0f0f0f0UL); + x= ((x>> 2)&0x33333333UL) | ((x<< 2)&0xccccccccUL); + return((x>> 1)&0x55555555UL) | ((x<< 1)&0xaaaaaaaaUL); +} + +static int sort32a(const void *a,const void *b){ + return (**(ogg_uint32_t **)a>**(ogg_uint32_t **)b)- + (**(ogg_uint32_t **)a<**(ogg_uint32_t **)b); +} + +/* decode codebook arrangement is more heavily optimized than encode */ +int vorbis_book_init_decode(codebook *c,const static_codebook *s){ + int i,j,n=0,tabn; + int *sortindex; + memset(c,0,sizeof(*c)); + + /* count actually used entries */ + for(i=0;ientries;i++) + if(s->lengthlist[i]>0) + n++; + + c->entries=s->entries; + c->used_entries=n; + c->dim=s->dim; + + if(n>0){ + /* two different remappings go on here. + + First, we collapse the likely sparse codebook down only to + actually represented values/words. This collapsing needs to be + indexed as map-valueless books are used to encode original entry + positions as integers. + + Second, we reorder all vectors, including the entry index above, + by sorted bitreversed codeword to allow treeless decode. */ + + /* perform sort */ + ogg_uint32_t *codes=_make_words(s->lengthlist,s->entries,c->used_entries); + ogg_uint32_t **codep=(ogg_uint32_t **)alloca(sizeof(*codep)*n); + + if(codes==NULL)goto err_out; + + for(i=0;icodelist=(ogg_uint32_t *)_ogg_malloc(n*sizeof(*c->codelist)); + /* the index is a reverse index */ + for(i=0;icodelist[sortindex[i]]=codes[i]; + _ogg_free(codes); + + + + c->valuelist=_book_unquantize(s,n,sortindex,&c->binarypoint); + c->dec_index=(int *)_ogg_malloc(n*sizeof(*c->dec_index)); + + for(n=0,i=0;ientries;i++) + if(s->lengthlist[i]>0) + c->dec_index[sortindex[n++]]=i; + + c->dec_codelengths=(char *)_ogg_malloc(n*sizeof(*c->dec_codelengths)); + for(n=0,i=0;ientries;i++) + if(s->lengthlist[i]>0) + c->dec_codelengths[sortindex[n++]]=s->lengthlist[i]; + + c->dec_firsttablen=_ilog(c->used_entries)-4; /* this is magic */ + if(c->dec_firsttablen<5)c->dec_firsttablen=5; + if(c->dec_firsttablen>8)c->dec_firsttablen=8; + + tabn=1<dec_firsttablen; + c->dec_firsttable=(ogg_uint32_t *)_ogg_calloc(tabn,sizeof(*c->dec_firsttable)); + c->dec_maxlength=0; + + for(i=0;idec_maxlengthdec_codelengths[i]) + c->dec_maxlength=c->dec_codelengths[i]; + if(c->dec_codelengths[i]<=c->dec_firsttablen){ + ogg_uint32_t orig=bitreverse(c->codelist[i]); + for(j=0;j<(1<<(c->dec_firsttablen-c->dec_codelengths[i]));j++) + c->dec_firsttable[orig|(j<dec_codelengths[i])]=i+1; + } + } + + /* now fill in 'unused' entries in the firsttable with hi/lo search + hints for the non-direct-hits */ + { + ogg_uint32_t mask=0xfffffffeUL<<(31-c->dec_firsttablen); + long lo=0,hi=0; + + for(i=0;idec_firsttablen); + if(c->dec_firsttable[bitreverse(word)]==0){ + while((lo+1)codelist[lo+1]<=word)lo++; + while( hi=(c->codelist[hi]&mask))hi++; + + /* we only actually have 15 bits per hint to play with here. + In order to overflow gracefully (nothing breaks, efficiency + just drops), encode as the difference from the extremes. */ + { + unsigned long loval=lo; + unsigned long hival=n-hi; + + if(loval>0x7fff)loval=0x7fff; + if(hival>0x7fff)hival=0x7fff; + c->dec_firsttable[bitreverse(word)]= + 0x80000000UL | (loval<<15) | hival; + } + } + } + } + } + + return(0); + err_out: + vorbis_book_clear(c); + return(-1); +} + diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/synthesis.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/synthesis.c Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,113 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: single-block PCM synthesis + last mod: $Id: synthesis.c,v 1.4 2003/03/29 03:07:21 xiphmont Exp $ + + ********************************************************************/ + +#include +#include "ogg.h" +#include "ivorbiscodec.h" +#include "codec_internal.h" +#include "registry.h" +#include "misc.h" +#include "block.h" + +int vorbis_synthesis(vorbis_block *vb,ogg_packet *op,int decodep){ + vorbis_dsp_state *vd=vb->vd; + private_state *b=(private_state *)vd->backend_state; + vorbis_info *vi=vd->vi; + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + oggpack_buffer *opb=&vb->opb; + int type,mode,i; + + /* first things first. Make sure decode is ready */ + _vorbis_block_ripcord(vb); + oggpack_readinit(opb,op->packet); + + /* Check the packet type */ + if(oggpack_read(opb,1)!=0){ + /* Oops. This is not an audio data packet */ + return(OV_ENOTAUDIO); + } + + /* read our mode and pre/post windowsize */ + mode=oggpack_read(opb,b->modebits); + if(mode==-1)return(OV_EBADPACKET); + + vb->mode=mode; + vb->W=ci->mode_param[mode]->blockflag; + if(vb->W){ + vb->lW=oggpack_read(opb,1); + vb->nW=oggpack_read(opb,1); + if(vb->nW==-1) return(OV_EBADPACKET); + }else{ + vb->lW=0; + vb->nW=0; + } + + /* more setup */ + vb->granulepos=op->granulepos; + vb->sequence=op->packetno-3; /* first block is third packet */ + vb->eofflag=op->e_o_s; + + if(decodep){ + /* alloc pcm passback storage */ + vb->pcmend=ci->blocksizes[vb->W]; + vb->pcm=(ogg_int32_t **)_vorbis_block_alloc(vb,sizeof(*vb->pcm)*vi->channels); + for(i=0;ichannels;i++) + vb->pcm[i]=(ogg_int32_t *)_vorbis_block_alloc(vb,vb->pcmend*sizeof(*vb->pcm[i])); + + /* unpack_header enforces range checking */ + type=ci->map_type[ci->mode_param[mode]->mapping]; + + return(_mapping_P[type]->inverse(vb,b->mode[mode])); + }else{ + /* no pcm */ + vb->pcmend=0; + vb->pcm=NULL; + + return(0); + } +} + +long vorbis_packet_blocksize(vorbis_info *vi,ogg_packet *op){ + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + oggpack_buffer opb; + int mode; + + oggpack_readinit(&opb,op->packet); + + /* Check the packet type */ + if(oggpack_read(&opb,1)!=0){ + /* Oops. This is not an audio data packet */ + return(OV_ENOTAUDIO); + } + + { + int modebits=0; + int v=ci->modes; + while(v>1){ + modebits++; + v>>=1; + } + + /* read our mode and pre/post windowsize */ + mode=oggpack_read(&opb,modebits); + } + if(mode==-1)return(OV_EBADPACKET); + return(ci->blocksizes[ci->mode_param[mode]->blockflag]); +} + + diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/vorbisfile.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/vorbisfile.c Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,1586 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: stdio-based convenience library for opening/seeking/decoding + last mod: $Id: vorbisfile.c,v 1.6 2003/03/30 23:40:56 xiphmont Exp $ + + ********************************************************************/ + +#include +#include +#include +#include +#include + +#include "ivorbiscodec.h" +#include "ivorbisfile.h" + +#include "misc.h" + +/* A 'chained bitstream' is a Vorbis bitstream that contains more than + one logical bitstream arranged end to end (the only form of Ogg + multiplexing allowed in a Vorbis bitstream; grouping [parallel + multiplexing] is not allowed in Vorbis) */ + +/* A Vorbis file can be played beginning to end (streamed) without + worrying ahead of time about chaining (see decoder_example.c). If + we have the whole file, however, and want random access + (seeking/scrubbing) or desire to know the total length/time of a + file, we need to account for the possibility of chaining. */ + +/* We can handle things a number of ways; we can determine the entire + bitstream structure right off the bat, or find pieces on demand. + This example determines and caches structure for the entire + bitstream, but builds a virtual decoder on the fly when moving + between links in the chain. */ + +/* There are also different ways to implement seeking. Enough + information exists in an Ogg bitstream to seek to + sample-granularity positions in the output. Or, one can seek by + picking some portion of the stream roughly in the desired area if + we only want coarse navigation through the stream. */ + +/************************************************************************* + * Many, many internal helpers. The intention is not to be confusing; + * rampant duplication and monolithic function implementation would be + * harder to understand anyway. The high level functions are last. Begin + * grokking near the end of the file */ + + +/* read a little more data from the file/pipe into the ogg_sync framer */ +static long _get_data(OggVorbis_File *vf){ + errno=0; + if(vf->datasource){ + unsigned char *buffer=ogg_sync_bufferin(vf->oy,CHUNKSIZE); + long bytes=(vf->callbacks.read_func)(buffer,1,CHUNKSIZE,vf->datasource); + if(bytes>0)ogg_sync_wrote(vf->oy,bytes); + if(bytes==0 && errno)return(-1); + return(bytes); + }else + return(0); +} + +/* save a tiny smidge of verbosity to make the code more readable */ +static void _seek_helper(OggVorbis_File *vf,ogg_int64_t offset){ + if(vf->datasource){ + (vf->callbacks.seek_func)(vf->datasource, offset, SEEK_SET); + vf->offset=offset; + ogg_sync_reset(vf->oy); + }else{ + /* shouldn't happen unless someone writes a broken callback */ + return; + } +} + +/* The read/seek functions track absolute position within the stream */ + +/* from the head of the stream, get the next page. boundary specifies + if the function is allowed to fetch more data from the stream (and + how much) or only use internally buffered data. + + boundary: -1) unbounded search + 0) read no additional data; use cached only + n) search for a new page beginning for n bytes + + return: <0) did not find a page (OV_FALSE, OV_EOF, OV_EREAD) + n) found a page at absolute offset n + + produces a refcounted page */ + +static ogg_int64_t _get_next_page(OggVorbis_File *vf,ogg_page *og, + ogg_int64_t boundary){ + if(boundary>0)boundary+=vf->offset; + while(1){ + long more; + + if(boundary>0 && vf->offset>=boundary)return(OV_FALSE); + more=ogg_sync_pageseek(vf->oy,og); + + if(more<0){ + /* skipped n bytes */ + vf->offset-=more; + }else{ + if(more==0){ + /* send more paramedics */ + if(!boundary)return(OV_FALSE); + { + long ret=_get_data(vf); + if(ret==0)return(OV_EOF); + if(ret<0)return(OV_EREAD); + } + }else{ + /* got a page. Return the offset at the page beginning, + advance the internal offset past the page end */ + ogg_int64_t ret=vf->offset; + vf->offset+=more; + return(ret); + + } + } + } +} + +/* find the latest page beginning before the current stream cursor + position. Much dirtier than the above as Ogg doesn't have any + backward search linkage. no 'readp' as it will certainly have to + read. */ +/* returns offset or OV_EREAD, OV_FAULT and produces a refcounted page */ + +static ogg_int64_t _get_prev_page(OggVorbis_File *vf,ogg_page *og){ + ogg_int64_t begin=vf->offset; + ogg_int64_t end=begin; + ogg_int64_t ret; + ogg_int64_t offset=-1; + + while(offset==-1){ + begin-=CHUNKSIZE; + if(begin<0) + begin=0; + _seek_helper(vf,begin); + while(vf->offsetoffset); + if(ret==OV_EREAD)return(OV_EREAD); + if(ret<0){ + break; + }else{ + offset=ret; + } + } + } + + /* we have the offset. Actually snork and hold the page now */ + _seek_helper(vf,offset); + ret=_get_next_page(vf,og,CHUNKSIZE); + if(ret<0) + /* this shouldn't be possible */ + return(OV_EFAULT); + + return(offset); +} + +/* finds each bitstream link one at a time using a bisection search + (has to begin by knowing the offset of the lb's initial page). + Recurses for each link so it can alloc the link storage after + finding them all, then unroll and fill the cache at the same time */ +static int _bisect_forward_serialno(OggVorbis_File *vf, + ogg_int64_t begin, + ogg_int64_t searched, + ogg_int64_t end, + ogg_uint32_t currentno, + long m){ + ogg_int64_t endsearched=end; + ogg_int64_t next=end; + ogg_page og={0,0,0,0}; + ogg_int64_t ret; + + /* the below guards against garbage seperating the last and + first pages of two links. */ + while(searched=0)next=ret; + }else{ + searched=ret+og.header_len+og.body_len; + } + ogg_page_release(&og); + } + + _seek_helper(vf,next); + ret=_get_next_page(vf,&og,-1); + if(ret==OV_EREAD)return(OV_EREAD); + + if(searched>=end || ret<0){ + ogg_page_release(&og); + vf->links=m+1; + vf->offsets=_ogg_malloc((vf->links+1)*sizeof(*vf->offsets)); + vf->serialnos=_ogg_malloc(vf->links*sizeof(*vf->serialnos)); + vf->offsets[m+1]=searched; + }else{ + ret=_bisect_forward_serialno(vf,next,vf->offset, + end,ogg_page_serialno(&og),m+1); + ogg_page_release(&og); + if(ret==OV_EREAD)return(OV_EREAD); + } + + vf->offsets[m]=begin; + vf->serialnos[m]=currentno; + return(0); +} + +/* uses the local ogg_stream storage in vf; this is important for + non-streaming input sources */ +/* consumes the page that's passed in (if any) */ + +static int _fetch_headers(OggVorbis_File *vf, + vorbis_info *vi, + vorbis_comment *vc, + ogg_uint32_t *serialno, + ogg_page *og_ptr){ + ogg_page og={0,0,0,0}; + ogg_packet op={0,0,0,0,0,0}; + int i,ret; + + if(!og_ptr){ + ogg_int64_t llret=_get_next_page(vf,&og,CHUNKSIZE); + if(llret==OV_EREAD)return(OV_EREAD); + if(llret<0)return OV_ENOTVORBIS; + og_ptr=&og; + } + + ogg_stream_reset_serialno(vf->os,ogg_page_serialno(og_ptr)); + if(serialno)*serialno=vf->os->serialno; + vf->ready_state=STREAMSET; + + /* extract the initial header from the first page and verify that the + Ogg bitstream is in fact Vorbis data */ + + vorbis_info_init(vi); + vorbis_comment_init(vc); + + i=0; + while(i<3){ + ogg_stream_pagein(vf->os,og_ptr); + while(i<3){ + int result=ogg_stream_packetout(vf->os,&op); + if(result==0)break; + if(result==-1){ + ret=OV_EBADHEADER; + goto bail_header; + } + if((ret=vorbis_synthesis_headerin(vi,vc,&op))){ + goto bail_header; + } + i++; + } + if(i<3) + if(_get_next_page(vf,og_ptr,CHUNKSIZE)<0){ + ret=OV_EBADHEADER; + goto bail_header; + } + } + + ogg_packet_release(&op); + ogg_page_release(&og); + return 0; + + bail_header: + ogg_packet_release(&op); + ogg_page_release(&og); + vorbis_info_clear(vi); + vorbis_comment_clear(vc); + vf->ready_state=OPENED; + + return ret; +} + +/* last step of the OggVorbis_File initialization; get all the + vorbis_info structs and PCM positions. Only called by the seekable + initialization (local stream storage is hacked slightly; pay + attention to how that's done) */ + +/* this is void and does not propogate errors up because we want to be + able to open and use damaged bitstreams as well as we can. Just + watch out for missing information for links in the OggVorbis_File + struct */ +static void _prefetch_all_headers(OggVorbis_File *vf, ogg_int64_t dataoffset){ + ogg_page og={0,0,0,0}; + int i; + ogg_int64_t ret; + + vf->vi=_ogg_realloc(vf->vi,vf->links*sizeof(*vf->vi)); + vf->vc=_ogg_realloc(vf->vc,vf->links*sizeof(*vf->vc)); + vf->dataoffsets=_ogg_malloc(vf->links*sizeof(*vf->dataoffsets)); + vf->pcmlengths=_ogg_malloc(vf->links*2*sizeof(*vf->pcmlengths)); + + for(i=0;ilinks;i++){ + if(i==0){ + /* we already grabbed the initial header earlier. Just set the offset */ + vf->dataoffsets[i]=dataoffset; + _seek_helper(vf,dataoffset); + + }else{ + + /* seek to the location of the initial header */ + + _seek_helper(vf,vf->offsets[i]); + if(_fetch_headers(vf,vf->vi+i,vf->vc+i,NULL,NULL)<0){ + vf->dataoffsets[i]=-1; + }else{ + vf->dataoffsets[i]=vf->offset; + } + } + + /* fetch beginning PCM offset */ + + if(vf->dataoffsets[i]!=-1){ + ogg_int64_t accumulated=0,pos; + long lastblock=-1; + int result; + + ogg_stream_reset_serialno(vf->os,vf->serialnos[i]); + + while(1){ + ogg_packet op={0,0,0,0,0,0}; + + ret=_get_next_page(vf,&og,-1); + if(ret<0) + /* this should not be possible unless the file is + truncated/mangled */ + break; + + if(ogg_page_serialno(&og)!=vf->serialnos[i]) + break; + + pos=ogg_page_granulepos(&og); + + /* count blocksizes of all frames in the page */ + ogg_stream_pagein(vf->os,&og); + while((result=ogg_stream_packetout(vf->os,&op))){ + if(result>0){ /* ignore holes */ + long thisblock=vorbis_packet_blocksize(vf->vi+i,&op); + if(lastblock!=-1) + accumulated+=(lastblock+thisblock)>>2; + lastblock=thisblock; + } + } + ogg_packet_release(&op); + + if(pos!=-1){ + /* pcm offset of last packet on the first audio page */ + accumulated= pos-accumulated; + break; + } + } + + /* less than zero? This is a stream with samples trimmed off + the beginning, a normal occurrence; set the offset to zero */ + if(accumulated<0)accumulated=0; + + vf->pcmlengths[i*2]=accumulated; + } + + /* get the PCM length of this link. To do this, + get the last page of the stream */ + { + ogg_int64_t end=vf->offsets[i+1]; + _seek_helper(vf,end); + + while(1){ + ret=_get_prev_page(vf,&og); + if(ret<0){ + /* this should not be possible */ + vorbis_info_clear(vf->vi+i); + vorbis_comment_clear(vf->vc+i); + break; + } + if(ogg_page_granulepos(&og)!=-1){ + vf->pcmlengths[i*2+1]=ogg_page_granulepos(&og)-vf->pcmlengths[i*2]; + break; + } + vf->offset=ret; + } + } + } + ogg_page_release(&og); +} + +static void _make_decode_ready(OggVorbis_File *vf){ + if(vf->ready_state!=STREAMSET)return; + if(vf->seekable){ + vorbis_synthesis_init(&vf->vd,vf->vi+vf->current_link); + }else{ + vorbis_synthesis_init(&vf->vd,vf->vi); + } + vorbis_block_init(&vf->vd,&vf->vb); + vf->ready_state=INITSET; + vf->bittrack=0; + vf->samptrack=0; + return; +} + +static int _open_seekable2(OggVorbis_File *vf){ + ogg_uint32_t serialno=vf->current_serialno; + ogg_uint32_t tempserialno; + ogg_int64_t dataoffset=vf->offset, end; + ogg_page og={0,0,0,0}; + + /* we're partially open and have a first link header state in + storage in vf */ + /* we can seek, so set out learning all about this file */ + (vf->callbacks.seek_func)(vf->datasource,0,SEEK_END); + vf->offset=vf->end=(vf->callbacks.tell_func)(vf->datasource); + + /* We get the offset for the last page of the physical bitstream. + Most OggVorbis files will contain a single logical bitstream */ + end=_get_prev_page(vf,&og); + if(end<0)return(end); + + /* more than one logical bitstream? */ + tempserialno=ogg_page_serialno(&og); + ogg_page_release(&og); + + if(tempserialno!=serialno){ + + /* Chained bitstream. Bisect-search each logical bitstream + section. Do so based on serial number only */ + if(_bisect_forward_serialno(vf,0,0,end+1,serialno,0)<0)return(OV_EREAD); + + }else{ + + /* Only one logical bitstream */ + if(_bisect_forward_serialno(vf,0,end,end+1,serialno,0))return(OV_EREAD); + + } + + /* the initial header memory is referenced by vf after; don't free it */ + _prefetch_all_headers(vf,dataoffset); + return(ov_raw_seek(vf,0)); +} + +/* clear out the current logical bitstream decoder */ +static void _decode_clear(OggVorbis_File *vf){ + vorbis_dsp_clear(&vf->vd); + vorbis_block_clear(&vf->vb); + vf->ready_state=OPENED; +} + +/* fetch and process a packet. Handles the case where we're at a + bitstream boundary and dumps the decoding machine. If the decoding + machine is unloaded, it loads it. It also keeps pcm_offset up to + date (seek and read both use this. seek uses a special hack with + readp). + + return: <0) error, OV_HOLE (lost packet) or OV_EOF + 0) need more data (only if readp==0) + 1) got a packet +*/ + +static int _fetch_and_process_packet(OggVorbis_File *vf, + int readp, + int spanp){ + ogg_page og={0,0,0,0}; + ogg_packet op={0,0,0,0,0,0}; + int ret=0; + + /* handle one packet. Try to fetch it from current stream state */ + /* extract packets from page */ + while(1){ + + /* process a packet if we can. If the machine isn't loaded, + neither is a page */ + if(vf->ready_state==INITSET){ + while(1) { + int result=ogg_stream_packetout(vf->os,&op); + ogg_int64_t granulepos; + + if(result<0){ + ret=OV_HOLE; /* hole in the data. */ + goto cleanup; + } + if(result>0){ + /* got a packet. process it */ + granulepos=op.granulepos; + if(!vorbis_synthesis(&vf->vb,&op,1)){ /* lazy check for lazy + header handling. The + header packets aren't + audio, so if/when we + submit them, + vorbis_synthesis will + reject them */ + + /* suck in the synthesis data and track bitrate */ + { + int oldsamples=vorbis_synthesis_pcmout(&vf->vd,NULL); + /* for proper use of libvorbis within libvorbisfile, + oldsamples will always be zero. */ + if(oldsamples){ + ret=OV_EFAULT; + goto cleanup; + } + + vorbis_synthesis_blockin(&vf->vd,&vf->vb); + vf->samptrack+=vorbis_synthesis_pcmout(&vf->vd,NULL)-oldsamples; + vf->bittrack+=op.bytes*8; + } + + /* update the pcm offset. */ + if(granulepos!=-1 && !op.e_o_s){ + int link=(vf->seekable?vf->current_link:0); + int i,samples; + + /* this packet has a pcm_offset on it (the last packet + completed on a page carries the offset) After processing + (above), we know the pcm position of the *last* sample + ready to be returned. Find the offset of the *first* + + As an aside, this trick is inaccurate if we begin + reading anew right at the last page; the end-of-stream + granulepos declares the last frame in the stream, and the + last packet of the last page may be a partial frame. + So, we need a previous granulepos from an in-sequence page + to have a reference point. Thus the !op.e_o_s clause + above */ + + if(vf->seekable && link>0) + granulepos-=vf->pcmlengths[link*2]; + if(granulepos<0)granulepos=0; /* actually, this + shouldn't be possible + here unless the stream + is very broken */ + + samples=vorbis_synthesis_pcmout(&vf->vd,NULL); + + granulepos-=samples; + for(i=0;ipcmlengths[i*2+1]; + vf->pcm_offset=granulepos; + } + ret=1; + goto cleanup; + } + } + else + break; + } + } + + if(vf->ready_state>=OPENED){ + int ret; + if(!readp){ + ret=0; + goto cleanup; + } + if((ret=_get_next_page(vf,&og,-1))<0){ + ret=OV_EOF; /* eof. leave unitialized */ + goto cleanup; + } + + /* bitrate tracking; add the header's bytes here, the body bytes + are done by packet above */ + vf->bittrack+=og.header_len*8; + + /* has our decoding just traversed a bitstream boundary? */ + if(vf->ready_state==INITSET){ + if(vf->current_serialno!=ogg_page_serialno(&og)){ + if(!spanp){ + ret=OV_EOF; + goto cleanup; + } + + _decode_clear(vf); + + if(!vf->seekable){ + vorbis_info_clear(vf->vi); + vorbis_comment_clear(vf->vc); + } + } + } + } + + /* Do we need to load a new machine before submitting the page? */ + /* This is different in the seekable and non-seekable cases. + + In the seekable case, we already have all the header + information loaded and cached; we just initialize the machine + with it and continue on our merry way. + + In the non-seekable (streaming) case, we'll only be at a + boundary if we just left the previous logical bitstream and + we're now nominally at the header of the next bitstream + */ + + if(vf->ready_state!=INITSET){ + int link; + + if(vf->ready_stateseekable){ + vf->current_serialno=ogg_page_serialno(&og); + + /* match the serialno to bitstream section. We use this rather than + offset positions to avoid problems near logical bitstream + boundaries */ + for(link=0;linklinks;link++) + if(vf->serialnos[link]==vf->current_serialno)break; + if(link==vf->links){ + ret=OV_EBADLINK; /* sign of a bogus stream. error out, + leave machine uninitialized */ + goto cleanup; + } + + vf->current_link=link; + + ogg_stream_reset_serialno(vf->os,vf->current_serialno); + vf->ready_state=STREAMSET; + + }else{ + /* we're streaming */ + /* fetch the three header packets, build the info struct */ + + int ret=_fetch_headers(vf,vf->vi,vf->vc,&vf->current_serialno,&og); + if(ret) goto cleanup; + vf->current_link++; + link=0; + } + } + + _make_decode_ready(vf); + } + ogg_stream_pagein(vf->os,&og); + } + cleanup: + ogg_packet_release(&op); + ogg_page_release(&og); + return ret; +} + +/* if, eg, 64 bit stdio is configured by default, this will build with + fseek64 */ +static int _fseek64_wrap(FILE *f,ogg_int64_t off,int whence){ + if(f==NULL)return(-1); + return fseek(f,off,whence); +} + +static int _ov_open1(void *f,OggVorbis_File *vf,char *initial, + long ibytes, ov_callbacks callbacks){ + int offsettest=(f?callbacks.seek_func(f,0,SEEK_CUR):-1); + int ret; + + memset(vf,0,sizeof(*vf)); + vf->datasource=f; + vf->callbacks = callbacks; + + /* init the framing state */ + vf->oy=ogg_sync_create(); + + /* perhaps some data was previously read into a buffer for testing + against other stream types. Allow initialization from this + previously read data (as we may be reading from a non-seekable + stream) */ + if(initial){ + unsigned char *buffer=ogg_sync_bufferin(vf->oy,ibytes); + memcpy(buffer,initial,ibytes); + ogg_sync_wrote(vf->oy,ibytes); + } + + /* can we seek? Stevens suggests the seek test was portable */ + if(offsettest!=-1)vf->seekable=1; + + /* No seeking yet; Set up a 'single' (current) logical bitstream + entry for partial open */ + vf->links=1; + vf->vi=_ogg_calloc(vf->links,sizeof(*vf->vi)); + vf->vc=_ogg_calloc(vf->links,sizeof(*vf->vc)); + vf->os=ogg_stream_create(-1); /* fill in the serialno later */ + + /* Try to fetch the headers, maintaining all the storage */ + if((ret=_fetch_headers(vf,vf->vi,vf->vc,&vf->current_serialno,NULL))<0){ + vf->datasource=NULL; + ov_clear(vf); + }else if(vf->ready_state < PARTOPEN) + vf->ready_state=PARTOPEN; + return(ret); +} + +static int _ov_open2(OggVorbis_File *vf){ + if(vf->ready_state < OPENED) + vf->ready_state=OPENED; + if(vf->seekable){ + int ret=_open_seekable2(vf); + if(ret){ + vf->datasource=NULL; + ov_clear(vf); + } + return(ret); + } + return 0; +} + + +/* clear out the OggVorbis_File struct */ +int ov_clear(OggVorbis_File *vf){ + if(vf){ + vorbis_block_clear(&vf->vb); + vorbis_dsp_clear(&vf->vd); + ogg_stream_destroy(vf->os); + + if(vf->vi && vf->links){ + int i; + for(i=0;ilinks;i++){ + vorbis_info_clear(vf->vi+i); + vorbis_comment_clear(vf->vc+i); + } + _ogg_free(vf->vi); + _ogg_free(vf->vc); + } + if(vf->dataoffsets)_ogg_free(vf->dataoffsets); + if(vf->pcmlengths)_ogg_free(vf->pcmlengths); + if(vf->serialnos)_ogg_free(vf->serialnos); + if(vf->offsets)_ogg_free(vf->offsets); + ogg_sync_destroy(vf->oy); + + if(vf->datasource)(vf->callbacks.close_func)(vf->datasource); + memset(vf,0,sizeof(*vf)); + } +#ifdef DEBUG_LEAKS + _VDBG_dump(); +#endif + return(0); +} + +/* inspects the OggVorbis file and finds/documents all the logical + bitstreams contained in it. Tries to be tolerant of logical + bitstream sections that are truncated/woogie. + + return: -1) error + 0) OK +*/ + +int ov_open_callbacks(void *f,OggVorbis_File *vf,char *initial,long ibytes, + ov_callbacks callbacks){ + int ret=_ov_open1(f,vf,initial,ibytes,callbacks); + if(ret)return ret; + return _ov_open2(vf); +} + +int ov_open(FILE *f,OggVorbis_File *vf,char *initial,long ibytes){ + ov_callbacks callbacks = { + (size_t (*)(void *, size_t, size_t, void *)) fread, + (int (*)(void *, ogg_int64_t, int)) _fseek64_wrap, + (int (*)(void *)) fclose, + (long (*)(void *)) ftell + }; + + return ov_open_callbacks((void *)f, vf, initial, ibytes, callbacks); +} + +/* Only partially open the vorbis file; test for Vorbisness, and load + the headers for the first chain. Do not seek (although test for + seekability). Use ov_test_open to finish opening the file, else + ov_clear to close/free it. Same return codes as open. */ + +int ov_test_callbacks(void *f,OggVorbis_File *vf,char *initial,long ibytes, + ov_callbacks callbacks) +{ + return _ov_open1(f,vf,initial,ibytes,callbacks); +} + +int ov_test(FILE *f,OggVorbis_File *vf,char *initial,long ibytes){ + ov_callbacks callbacks = { + (size_t (*)(void *, size_t, size_t, void *)) fread, + (int (*)(void *, ogg_int64_t, int)) _fseek64_wrap, + (int (*)(void *)) fclose, + (long (*)(void *)) ftell + }; + + return ov_test_callbacks((void *)f, vf, initial, ibytes, callbacks); +} + +int ov_test_open(OggVorbis_File *vf){ + if(vf->ready_state!=PARTOPEN)return(OV_EINVAL); + return _ov_open2(vf); +} + +/* How many logical bitstreams in this physical bitstream? */ +long ov_streams(OggVorbis_File *vf){ + return vf->links; +} + +/* Is the FILE * associated with vf seekable? */ +long ov_seekable(OggVorbis_File *vf){ + return vf->seekable; +} + +/* returns the bitrate for a given logical bitstream or the entire + physical bitstream. If the file is open for random access, it will + find the *actual* average bitrate. If the file is streaming, it + returns the nominal bitrate (if set) else the average of the + upper/lower bounds (if set) else -1 (unset). + + If you want the actual bitrate field settings, get them from the + vorbis_info structs */ + +long ov_bitrate(OggVorbis_File *vf,int i){ + if(vf->ready_state=vf->links)return(OV_EINVAL); + if(!vf->seekable && i!=0)return(ov_bitrate(vf,0)); + if(i<0){ + ogg_int64_t bits=0; + int i; + for(i=0;ilinks;i++) + bits+=(vf->offsets[i+1]-vf->dataoffsets[i])*8; + /* This once read: return(rint(bits/ov_time_total(vf,-1))); + * gcc 3.x on x86 miscompiled this at optimisation level 2 and above, + * so this is slightly transformed to make it work. + */ + return(bits*1000/ov_time_total(vf,-1)); + }else{ + if(vf->seekable){ + /* return the actual bitrate */ + return((vf->offsets[i+1]-vf->dataoffsets[i])*8000/ov_time_total(vf,i)); + }else{ + /* return nominal if set */ + if(vf->vi[i].bitrate_nominal>0){ + return vf->vi[i].bitrate_nominal; + }else{ + if(vf->vi[i].bitrate_upper>0){ + if(vf->vi[i].bitrate_lower>0){ + return (vf->vi[i].bitrate_upper+vf->vi[i].bitrate_lower)/2; + }else{ + return vf->vi[i].bitrate_upper; + } + } + return(OV_FALSE); + } + } + } +} + +/* returns the actual bitrate since last call. returns -1 if no + additional data to offer since last call (or at beginning of stream), + EINVAL if stream is only partially open +*/ +long ov_bitrate_instant(OggVorbis_File *vf){ + int link=(vf->seekable?vf->current_link:0); + long ret; + if(vf->ready_statesamptrack==0)return(OV_FALSE); + ret=vf->bittrack/vf->samptrack*vf->vi[link].rate; + vf->bittrack=0; + vf->samptrack=0; + return(ret); +} + +/* Guess */ +long ov_serialnumber(OggVorbis_File *vf,int i){ + if(i>=vf->links)return(ov_serialnumber(vf,vf->links-1)); + if(!vf->seekable && i>=0)return(ov_serialnumber(vf,-1)); + if(i<0){ + return(vf->current_serialno); + }else{ + return(vf->serialnos[i]); + } +} + +/* returns: total raw (compressed) length of content if i==-1 + raw (compressed) length of that logical bitstream for i==0 to n + OV_EINVAL if the stream is not seekable (we can't know the length) + or if stream is only partially open +*/ +ogg_int64_t ov_raw_total(OggVorbis_File *vf,int i){ + if(vf->ready_stateseekable || i>=vf->links)return(OV_EINVAL); + if(i<0){ + ogg_int64_t acc=0; + int i; + for(i=0;ilinks;i++) + acc+=ov_raw_total(vf,i); + return(acc); + }else{ + return(vf->offsets[i+1]-vf->offsets[i]); + } +} + +/* returns: total PCM length (samples) of content if i==-1 PCM length + (samples) of that logical bitstream for i==0 to n + OV_EINVAL if the stream is not seekable (we can't know the + length) or only partially open +*/ +ogg_int64_t ov_pcm_total(OggVorbis_File *vf,int i){ + if(vf->ready_stateseekable || i>=vf->links)return(OV_EINVAL); + if(i<0){ + ogg_int64_t acc=0; + int i; + for(i=0;ilinks;i++) + acc+=ov_pcm_total(vf,i); + return(acc); + }else{ + return(vf->pcmlengths[i*2+1]); + } +} + +/* returns: total milliseconds of content if i==-1 + milliseconds in that logical bitstream for i==0 to n + OV_EINVAL if the stream is not seekable (we can't know the + length) or only partially open +*/ +ogg_int64_t ov_time_total(OggVorbis_File *vf,int i){ + if(vf->ready_stateseekable || i>=vf->links)return(OV_EINVAL); + if(i<0){ + ogg_int64_t acc=0; + int i; + for(i=0;ilinks;i++) + acc+=ov_time_total(vf,i); + return(acc); + }else{ + return(((ogg_int64_t)vf->pcmlengths[i*2+1])*1000/vf->vi[i].rate); + } +} + +/* seek to an offset relative to the *compressed* data. This also + scans packets to update the PCM cursor. It will cross a logical + bitstream boundary, but only if it can't get any packets out of the + tail of the bitstream we seek to (so no surprises). + + returns zero on success, nonzero on failure */ + +int ov_raw_seek(OggVorbis_File *vf,ogg_int64_t pos){ + ogg_stream_state *work_os=NULL; + ogg_page og={0,0,0,0}; + ogg_packet op={0,0,0,0,0,0}; + + if(vf->ready_stateseekable) + return(OV_ENOSEEK); /* don't dump machine if we can't seek */ + + if(pos<0 || pos>vf->end)return(OV_EINVAL); + + /* don't yet clear out decoding machine (if it's initialized), in + the case we're in the same link. Restart the decode lapping, and + let _fetch_and_process_packet deal with a potential bitstream + boundary */ + vf->pcm_offset=-1; + ogg_stream_reset_serialno(vf->os, + vf->current_serialno); /* must set serialno */ + vorbis_synthesis_restart(&vf->vd); + + _seek_helper(vf,pos); + + /* we need to make sure the pcm_offset is set, but we don't want to + advance the raw cursor past good packets just to get to the first + with a granulepos. That's not equivalent behavior to beginning + decoding as immediately after the seek position as possible. + + So, a hack. We use two stream states; a local scratch state and + the shared vf->os stream state. We use the local state to + scan, and the shared state as a buffer for later decode. + + Unfortuantely, on the last page we still advance to last packet + because the granulepos on the last page is not necessarily on a + packet boundary, and we need to make sure the granpos is + correct. + */ + + { + int lastblock=0; + int accblock=0; + int thisblock; + int eosflag=0; + + work_os=ogg_stream_create(vf->current_serialno); /* get the memory ready */ + while(1){ + if(vf->ready_state>=STREAMSET){ + /* snarf/scan a packet if we can */ + int result=ogg_stream_packetout(work_os,&op); + + if(result>0){ + + if(vf->vi[vf->current_link].codec_setup){ + thisblock=vorbis_packet_blocksize(vf->vi+vf->current_link,&op); + if(thisblock<0){ + ogg_stream_packetout(vf->os,NULL); + thisblock=0; + }else{ + + if(eosflag) + ogg_stream_packetout(vf->os,NULL); + else + if(lastblock)accblock+=(lastblock+thisblock)>>2; + } + + if(op.granulepos!=-1){ + int i,link=vf->current_link; + ogg_int64_t granulepos=op.granulepos-vf->pcmlengths[link*2]; + if(granulepos<0)granulepos=0; + + for(i=0;ipcmlengths[i*2+1]; + vf->pcm_offset=granulepos-accblock; + break; + } + lastblock=thisblock; + continue; + }else + ogg_stream_packetout(vf->os,NULL); + } + } + + if(!lastblock){ + if(_get_next_page(vf,&og,-1)<0){ + vf->pcm_offset=ov_pcm_total(vf,-1); + break; + } + }else{ + /* huh? Bogus stream with packets but no granulepos */ + vf->pcm_offset=-1; + break; + } + + /* has our decoding just traversed a bitstream boundary? */ + if(vf->ready_state>=STREAMSET) + if(vf->current_serialno!=ogg_page_serialno(&og)){ + _decode_clear(vf); /* clear out stream state */ + ogg_stream_destroy(work_os); + } + + if(vf->ready_statecurrent_serialno=ogg_page_serialno(&og); + for(link=0;linklinks;link++) + if(vf->serialnos[link]==vf->current_serialno)break; + if(link==vf->links) + goto seek_error; /* sign of a bogus stream. error out, + leave machine uninitialized */ + + vf->current_link=link; + + ogg_stream_reset_serialno(vf->os,vf->current_serialno); + ogg_stream_reset_serialno(work_os,vf->current_serialno); + vf->ready_state=STREAMSET; + + } + + { + ogg_page dup; + ogg_page_dup(&dup,&og); + eosflag=ogg_page_eos(&og); + ogg_stream_pagein(vf->os,&og); + ogg_stream_pagein(work_os,&dup); + } + } + } + + ogg_packet_release(&op); + ogg_page_release(&og); + ogg_stream_destroy(work_os); + vf->bittrack=0; + vf->samptrack=0; + return(0); + + seek_error: + ogg_packet_release(&op); + ogg_page_release(&og); + + /* dump the machine so we're in a known state */ + vf->pcm_offset=-1; + ogg_stream_destroy(work_os); + _decode_clear(vf); + return OV_EBADLINK; +} + +/* Page granularity seek (faster than sample granularity because we + don't do the last bit of decode to find a specific sample). + + Seek to the last [granule marked] page preceeding the specified pos + location, such that decoding past the returned point will quickly + arrive at the requested position. */ +int ov_pcm_seek_page(OggVorbis_File *vf,ogg_int64_t pos){ + int link=-1; + ogg_int64_t result=0; + ogg_int64_t total=ov_pcm_total(vf,-1); + ogg_page og={0,0,0,0}; + ogg_packet op={0,0,0,0,0,0}; + + if(vf->ready_stateseekable)return(OV_ENOSEEK); + if(pos<0 || pos>total)return(OV_EINVAL); + + /* which bitstream section does this pcm offset occur in? */ + for(link=vf->links-1;link>=0;link--){ + total-=vf->pcmlengths[link*2+1]; + if(pos>=total)break; + } + + /* search within the logical bitstream for the page with the highest + pcm_pos preceeding (or equal to) pos. There is a danger here; + missing pages or incorrect frame number information in the + bitstream could make our task impossible. Account for that (it + would be an error condition) */ + + /* new search algorithm by HB (Nicholas Vinen) */ + { + ogg_int64_t end=vf->offsets[link+1]; + ogg_int64_t begin=vf->offsets[link]; + ogg_int64_t begintime = vf->pcmlengths[link*2]; + ogg_int64_t endtime = vf->pcmlengths[link*2+1]+begintime; + ogg_int64_t target=pos-total+begintime; + ogg_int64_t best=begin; + + while(beginoffset); + if(result==OV_EREAD) goto seek_error; + if(result<0){ + if(bisect<=begin+1) + end=begin; /* found it */ + else{ + if(bisect==0) goto seek_error; + bisect-=CHUNKSIZE; + if(bisect<=begin)bisect=begin+1; + _seek_helper(vf,bisect); + } + }else{ + ogg_int64_t granulepos=ogg_page_granulepos(&og); + if(granulepos==-1)continue; + if(granuleposoffset; /* raw offset of next page */ + begintime=granulepos; + + if(target-begintime>44100)break; + bisect=begin; /* *not* begin + 1 */ + }else{ + if(bisect<=begin+1) + end=begin; /* found it */ + else{ + if(end==vf->offset){ /* we're pretty close - we'd be stuck in */ + end=result; + bisect-=CHUNKSIZE; /* an endless loop otherwise. */ + if(bisect<=begin)bisect=begin+1; + _seek_helper(vf,bisect); + }else{ + end=result; + endtime=granulepos; + break; + } + } + } + } + } + } + + /* found our page. seek to it, update pcm offset. Easier case than + raw_seek, don't keep packets preceeding granulepos. */ + { + + /* seek */ + _seek_helper(vf,best); + vf->pcm_offset=-1; + + if(_get_next_page(vf,&og,-1)<0){ + ogg_page_release(&og); + return(OV_EOF); /* shouldn't happen */ + } + + if(link!=vf->current_link){ + /* Different link; dump entire decode machine */ + _decode_clear(vf); + + vf->current_link=link; + vf->current_serialno=ogg_page_serialno(&og); + vf->ready_state=STREAMSET; + + }else{ + vorbis_synthesis_restart(&vf->vd); + } + + ogg_stream_reset_serialno(vf->os,vf->current_serialno); + ogg_stream_pagein(vf->os,&og); + + /* pull out all but last packet; the one with granulepos */ + while(1){ + result=ogg_stream_packetpeek(vf->os,&op); + if(result==0){ + /* !!! the packet finishing this page originated on a + preceeding page. Keep fetching previous pages until we + get one with a granulepos or without the 'continued' flag + set. Then just use raw_seek for simplicity. */ + + _seek_helper(vf,best); + + while(1){ + result=_get_prev_page(vf,&og); + if(result<0) goto seek_error; + if(ogg_page_granulepos(&og)>-1 || + !ogg_page_continued(&og)){ + return ov_raw_seek(vf,result); + } + vf->offset=result; + } + } + if(result<0){ + result = OV_EBADPACKET; + goto seek_error; + } + if(op.granulepos!=-1){ + vf->pcm_offset=op.granulepos-vf->pcmlengths[vf->current_link*2]; + if(vf->pcm_offset<0)vf->pcm_offset=0; + vf->pcm_offset+=total; + break; + }else + result=ogg_stream_packetout(vf->os,NULL); + } + } + } + + /* verify result */ + if(vf->pcm_offset>pos || pos>ov_pcm_total(vf,-1)){ + result=OV_EFAULT; + goto seek_error; + } + vf->bittrack=0; + vf->samptrack=0; + + ogg_page_release(&og); + ogg_packet_release(&op); + return(0); + + seek_error: + + ogg_page_release(&og); + ogg_packet_release(&op); + + /* dump machine so we're in a known state */ + vf->pcm_offset=-1; + _decode_clear(vf); + return (int)result; +} + +/* seek to a sample offset relative to the decompressed pcm stream + returns zero on success, nonzero on failure */ + +int ov_pcm_seek(OggVorbis_File *vf,ogg_int64_t pos){ + ogg_packet op={0,0,0,0,0,0}; + ogg_page og={0,0,0,0}; + int thisblock,lastblock=0; + int ret=ov_pcm_seek_page(vf,pos); + if(ret<0)return(ret); + _make_decode_ready(vf); + + /* discard leading packets we don't need for the lapping of the + position we want; don't decode them */ + + while(1){ + + int ret=ogg_stream_packetpeek(vf->os,&op); + if(ret>0){ + thisblock=vorbis_packet_blocksize(vf->vi+vf->current_link,&op); + if(thisblock<0){ + ogg_stream_packetout(vf->os,NULL); + continue; /* non audio packet */ + } + if(lastblock)vf->pcm_offset+=(lastblock+thisblock)>>2; + + if(vf->pcm_offset+((thisblock+ + vorbis_info_blocksize(vf->vi,1))>>2)>=pos)break; + + /* remove the packet from packet queue and track its granulepos */ + ogg_stream_packetout(vf->os,NULL); + vorbis_synthesis(&vf->vb,&op,0); /* set up a vb with + only tracking, no + pcm_decode */ + vorbis_synthesis_blockin(&vf->vd,&vf->vb); + + /* end of logical stream case is hard, especially with exact + length positioning. */ + + if(op.granulepos>-1){ + int i; + /* always believe the stream markers */ + vf->pcm_offset=op.granulepos-vf->pcmlengths[vf->current_link*2]; + if(vf->pcm_offset<0)vf->pcm_offset=0; + for(i=0;icurrent_link;i++) + vf->pcm_offset+=vf->pcmlengths[i*2+1]; + } + + lastblock=thisblock; + + }else{ + if(ret<0 && ret!=OV_HOLE)break; + + /* suck in a new page */ + if(_get_next_page(vf,&og,-1)<0)break; + if(vf->current_serialno!=ogg_page_serialno(&og))_decode_clear(vf); + + if(vf->ready_statecurrent_serialno=ogg_page_serialno(&og); + for(link=0;linklinks;link++) + if(vf->serialnos[link]==vf->current_serialno)break; + if(link==vf->links){ + ogg_page_release(&og); + ogg_packet_release(&op); + return(OV_EBADLINK); + } + vf->current_link=link; + + ogg_stream_reset_serialno(vf->os,vf->current_serialno); + vf->ready_state=STREAMSET; + _make_decode_ready(vf); + lastblock=0; + } + + ogg_stream_pagein(vf->os,&og); + } + } + + vf->bittrack=0; + vf->samptrack=0; + /* discard samples until we reach the desired position. Crossing a + logical bitstream boundary with abandon is OK. */ + while(vf->pcm_offsetpcm_offset; + long samples=vorbis_synthesis_pcmout(&vf->vd,NULL); + + if(samples>target)samples=target; + vorbis_synthesis_read(&vf->vd,samples); + vf->pcm_offset+=samples; + + if(samplespcm_offset=ov_pcm_total(vf,-1); /* eof */ + } + + ogg_page_release(&og); + ogg_packet_release(&op); + return 0; +} + +/* seek to a playback time relative to the decompressed pcm stream + returns zero on success, nonzero on failure */ +int ov_time_seek(OggVorbis_File *vf,ogg_int64_t milliseconds){ + /* translate time to PCM position and call ov_pcm_seek */ + + int link=-1; + ogg_int64_t pcm_total=ov_pcm_total(vf,-1); + ogg_int64_t time_total=ov_time_total(vf,-1); + + if(vf->ready_stateseekable)return(OV_ENOSEEK); + if(milliseconds<0 || milliseconds>time_total)return(OV_EINVAL); + + /* which bitstream section does this time offset occur in? */ + for(link=vf->links-1;link>=0;link--){ + pcm_total-=vf->pcmlengths[link*2+1]; + time_total-=ov_time_total(vf,link); + if(milliseconds>=time_total)break; + } + + /* enough information to convert time offset to pcm offset */ + { + ogg_int64_t target=pcm_total+(milliseconds-time_total)*vf->vi[link].rate/1000; + return(ov_pcm_seek(vf,target)); + } +} + +/* page-granularity version of ov_time_seek + returns zero on success, nonzero on failure */ +int ov_time_seek_page(OggVorbis_File *vf,ogg_int64_t milliseconds){ + /* translate time to PCM position and call ov_pcm_seek */ + + int link=-1; + ogg_int64_t pcm_total=ov_pcm_total(vf,-1); + ogg_int64_t time_total=ov_time_total(vf,-1); + + if(vf->ready_stateseekable)return(OV_ENOSEEK); + if(milliseconds<0 || milliseconds>time_total)return(OV_EINVAL); + + /* which bitstream section does this time offset occur in? */ + for(link=vf->links-1;link>=0;link--){ + pcm_total-=vf->pcmlengths[link*2+1]; + time_total-=ov_time_total(vf,link); + if(milliseconds>=time_total)break; + } + + /* enough information to convert time offset to pcm offset */ + { + ogg_int64_t target=pcm_total+(milliseconds-time_total)*vf->vi[link].rate/1000; + return(ov_pcm_seek_page(vf,target)); + } +} + +/* tell the current stream offset cursor. Note that seek followed by + tell will likely not give the set offset due to caching */ +ogg_int64_t ov_raw_tell(OggVorbis_File *vf){ + if(vf->ready_stateoffset); +} + +/* return PCM offset (sample) of next PCM sample to be read */ +ogg_int64_t ov_pcm_tell(OggVorbis_File *vf){ + if(vf->ready_statepcm_offset); +} + +/* return time offset (milliseconds) of next PCM sample to be read */ +ogg_int64_t ov_time_tell(OggVorbis_File *vf){ + int link=0; + ogg_int64_t pcm_total=0; + ogg_int64_t time_total=0; + + if(vf->ready_stateseekable){ + pcm_total=ov_pcm_total(vf,-1); + time_total=ov_time_total(vf,-1); + + /* which bitstream section does this time offset occur in? */ + for(link=vf->links-1;link>=0;link--){ + pcm_total-=vf->pcmlengths[link*2+1]; + time_total-=ov_time_total(vf,link); + if(vf->pcm_offset>=pcm_total)break; + } + } + + return(time_total+(1000*vf->pcm_offset-pcm_total)/vf->vi[link].rate); +} + +/* link: -1) return the vorbis_info struct for the bitstream section + currently being decoded + 0-n) to request information for a specific bitstream section + + In the case of a non-seekable bitstream, any call returns the + current bitstream. NULL in the case that the machine is not + initialized */ + +vorbis_info *ov_info(OggVorbis_File *vf,int link){ + if(vf->seekable){ + if(link<0) + if(vf->ready_state>=STREAMSET) + return vf->vi+vf->current_link; + else + return vf->vi; + else + if(link>=vf->links) + return NULL; + else + return vf->vi+link; + }else{ + return vf->vi; + } +} + +/* grr, strong typing, grr, no templates/inheritence, grr */ +vorbis_comment *ov_comment(OggVorbis_File *vf,int link){ + if(vf->seekable){ + if(link<0) + if(vf->ready_state>=STREAMSET) + return vf->vc+vf->current_link; + else + return vf->vc; + else + if(link>=vf->links) + return NULL; + else + return vf->vc+link; + }else{ + return vf->vc; + } +} + +/* up to this point, everything could more or less hide the multiple + logical bitstream nature of chaining from the toplevel application + if the toplevel application didn't particularly care. However, at + the point that we actually read audio back, the multiple-section + nature must surface: Multiple bitstream sections do not necessarily + have to have the same number of channels or sampling rate. + + ov_read returns the sequential logical bitstream number currently + being decoded along with the PCM data in order that the toplevel + application can take action on channel/sample rate changes. This + number will be incremented even for streamed (non-seekable) streams + (for seekable streams, it represents the actual logical bitstream + index within the physical bitstream. Note that the accessor + functions above are aware of this dichotomy). + + input values: buffer) a buffer to hold packed PCM data for return + length) the byte length requested to be placed into buffer + + return values: <0) error/hole in data (OV_HOLE), partial open (OV_EINVAL) + 0) EOF + n) number of bytes of PCM actually returned. The + below works on a packet-by-packet basis, so the + return length is not related to the 'length' passed + in, just guaranteed to fit. + + *section) set to the logical bitstream number */ + +long ov_read(OggVorbis_File *vf,char *buffer,int bytes_req,int *bitstream){ + int i,j; + + ogg_int32_t **pcm; + long samples; + + if(vf->ready_stateready_state==INITSET){ + samples=vorbis_synthesis_pcmout(&vf->vd,&pcm); + if(samples)break; + } + + /* suck in another packet */ + { + int ret=_fetch_and_process_packet(vf,1,1); + if(ret==OV_EOF) + return(0); + if(ret<=0) + return(ret); + } + + } + + if(samples>0){ + + /* yay! proceed to pack data into the byte buffer */ + + long channels=ov_info(vf,-1)->channels; + + if(samples>(bytes_req/(2*channels))) + samples=bytes_req/(2*channels); + + for(i=0;i>9); + dest+=channels; + } + } + + vorbis_synthesis_read(&vf->vd,samples); + vf->pcm_offset+=samples; + if(bitstream)*bitstream=vf->current_link; + return(samples*2*channels); + }else{ + return(samples); + } +} diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/window.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/window.c Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,83 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: window functions + + ********************************************************************/ + +#include +#include +#include "misc.h" +#include "window.h" +#include "window_lookup.h" + +const void *_vorbis_window(int type, int left){ + + switch(type){ + case 0: + + switch(left){ + case 32: + return vwin64; + case 64: + return vwin128; + case 128: + return vwin256; + case 256: + return vwin512; + case 512: + return vwin1024; + case 1024: + return vwin2048; + case 2048: + return vwin4096; + case 4096: + return vwin8192; + default: + return(0); + } + break; + default: + return(0); + } +} + +void _vorbis_apply_window(ogg_int32_t *d,const void *window_p[2], + long *blocksizes, + int lW,int W,int nW){ + + LOOKUP_T *window[2]={window_p[0],window_p[1]}; + long n=blocksizes[W]; + long ln=blocksizes[lW]; + long rn=blocksizes[nW]; + + long leftbegin=n/4-ln/4; + long leftend=leftbegin+ln/2; + + long rightbegin=n/2+n/4-rn/4; + long rightend=rightbegin+rn/2; + + int i,p; + + for(i=0;i