author | koda |
Mon, 10 Jun 2013 10:47:59 +0200 | |
changeset 9165 | 7b0d5388abc4 |
parent 7849 | a12155461b34 |
permissions | -rw-r--r-- |
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/******************************************************************** |
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* * |
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* THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * |
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* * |
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* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * |
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* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * |
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* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * |
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* * |
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* THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * |
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* BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * |
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* * |
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******************************************************************** |
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function: decode Ogg streams back into raw packets |
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note: The CRC code is directly derived from public domain code by |
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Ross Williams (ross@guest.adelaide.edu.au). See docs/framing.html |
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for details. |
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********************************************************************/ |
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#include <stdlib.h> |
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#include <string.h> |
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#include "ogg.h" |
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#include "misc.h" |
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/* A complete description of Ogg framing exists in docs/framing.html */ |
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/* basic, centralized Ogg memory management based on linked lists of |
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references to refcounted memory buffers. References and buffers |
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are both recycled. Buffers are passed around and consumed in |
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reference form. */ |
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static ogg_buffer_state *ogg_buffer_create(void){ |
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ogg_buffer_state *bs=_ogg_calloc(1,sizeof(*bs)); |
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return bs; |
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} |
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/* destruction is 'lazy'; there may be memory references outstanding, |
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and yanking the buffer state out from underneath would be |
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antisocial. Dealloc what is currently unused and have |
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_release_one watch for the stragglers to come in. When they do, |
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finish destruction. */ |
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/* call the helper while holding lock */ |
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static void _ogg_buffer_destroy(ogg_buffer_state *bs){ |
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ogg_buffer *bt; |
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ogg_reference *rt; |
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if(bs->shutdown){ |
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bt=bs->unused_buffers; |
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rt=bs->unused_references; |
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while(bt){ |
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ogg_buffer *b=bt; |
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bt=b->ptr.next; |
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if(b->data)_ogg_free(b->data); |
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_ogg_free(b); |
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} |
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bs->unused_buffers=0; |
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while(rt){ |
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ogg_reference *r=rt; |
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rt=r->next; |
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_ogg_free(r); |
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} |
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bs->unused_references=0; |
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if(!bs->outstanding) |
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_ogg_free(bs); |
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} |
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} |
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static void ogg_buffer_destroy(ogg_buffer_state *bs){ |
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bs->shutdown=1; |
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_ogg_buffer_destroy(bs); |
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} |
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static ogg_buffer *_fetch_buffer(ogg_buffer_state *bs,long bytes){ |
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ogg_buffer *ob; |
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bs->outstanding++; |
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/* do we have an unused buffer sitting in the pool? */ |
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if(bs->unused_buffers){ |
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ob=bs->unused_buffers; |
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bs->unused_buffers=ob->ptr.next; |
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/* if the unused buffer is too small, grow it */ |
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if(ob->size<bytes){ |
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ob->data=_ogg_realloc(ob->data,bytes); |
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ob->size=bytes; |
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} |
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}else{ |
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/* allocate a new buffer */ |
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ob=_ogg_malloc(sizeof(*ob)); |
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ob->data=_ogg_malloc(bytes<16?16:bytes); |
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ob->size=bytes; |
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} |
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ob->refcount=1; |
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ob->ptr.owner=bs; |
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return ob; |
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} |
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static ogg_reference *_fetch_ref(ogg_buffer_state *bs){ |
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ogg_reference *or; |
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bs->outstanding++; |
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/* do we have an unused reference sitting in the pool? */ |
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if(bs->unused_references){ |
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or=bs->unused_references; |
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bs->unused_references=or->next; |
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}else{ |
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/* allocate a new reference */ |
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or=_ogg_malloc(sizeof(*or)); |
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} |
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or->begin=0; |
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or->length=0; |
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or->next=0; |
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return or; |
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} |
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/* fetch a reference pointing to a fresh, initially continguous buffer |
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of at least [bytes] length */ |
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static ogg_reference *ogg_buffer_alloc(ogg_buffer_state *bs,long bytes){ |
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ogg_buffer *ob=_fetch_buffer(bs,bytes); |
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ogg_reference *or=_fetch_ref(bs); |
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or->buffer=ob; |
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return or; |
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} |
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134 |
|
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/* enlarge the data buffer in the current link */ |
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static void ogg_buffer_realloc(ogg_reference *or,long bytes){ |
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ogg_buffer *ob=or->buffer; |
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138 |
|
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/* if the unused buffer is too small, grow it */ |
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if(ob->size<bytes){ |
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ob->data=_ogg_realloc(ob->data,bytes); |
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ob->size=bytes; |
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} |
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} |
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145 |
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static void _ogg_buffer_mark_one(ogg_reference *or){ |
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or->buffer->refcount++; |
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} |
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149 |
|
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/* increase the refcount of the buffers to which the reference points */ |
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static void ogg_buffer_mark(ogg_reference *or){ |
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while(or){ |
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_ogg_buffer_mark_one(or); |
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or=or->next; |
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} |
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} |
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157 |
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/* duplicate a reference (pointing to the same actual buffer memory) |
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and increment buffer refcount. If the desired segment begins out |
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of range, NULL is returned; if the desired segment is simply zero |
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length, a zero length ref is returned. Partial range overlap |
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returns the overlap of the ranges */ |
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static ogg_reference *ogg_buffer_sub(ogg_reference *or,long begin,long length){ |
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ogg_reference *ret=0,*head=0; |
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165 |
|
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/* walk past any preceeding fragments we don't want */ |
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while(or && begin>=or->length){ |
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begin-=or->length; |
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or=or->next; |
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} |
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171 |
|
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/* duplicate the reference chain; increment refcounts */ |
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while(or && length){ |
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ogg_reference *temp=_fetch_ref(or->buffer->ptr.owner); |
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if(head) |
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head->next=temp; |
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else |
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ret=temp; |
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head=temp; |
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head->buffer=or->buffer; |
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head->begin=or->begin+begin; |
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head->length=length; |
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if(head->length>or->length-begin) |
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head->length=or->length-begin; |
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185 |
|
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begin=0; |
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length-=head->length; |
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or=or->next; |
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} |
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|
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ogg_buffer_mark(ret); |
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return ret; |
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} |
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|
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ogg_reference *ogg_buffer_dup(ogg_reference *or){ |
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ogg_reference *ret=0,*head=0; |
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/* duplicate the reference chain; increment refcounts */ |
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while(or){ |
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ogg_reference *temp=_fetch_ref(or->buffer->ptr.owner); |
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if(head) |
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head->next=temp; |
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else |
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ret=temp; |
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head=temp; |
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head->buffer=or->buffer; |
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head->begin=or->begin; |
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head->length=or->length; |
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or=or->next; |
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} |
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|
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ogg_buffer_mark(ret); |
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return ret; |
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213 |
} |
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|
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/* split a reference into two references; 'return' is a reference to |
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the buffer preceeding pos and 'head'/'tail' are the buffer past the |
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split. If pos is at or past the end of the passed in segment, |
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'head/tail' are NULL */ |
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static ogg_reference *ogg_buffer_split(ogg_reference **tail, |
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ogg_reference **head,long pos){ |
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221 |
|
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/* walk past any preceeding fragments to one of: |
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a) the exact boundary that seps two fragments |
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b) the fragment that needs split somewhere in the middle */ |
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ogg_reference *ret=*tail; |
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ogg_reference *or=*tail; |
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|
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while(or && pos>or->length){ |
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pos-=or->length; |
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or=or->next; |
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} |
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|
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if(!or || pos==0){ |
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return 0; |
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236 |
|
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}else{ |
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|
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if(pos>=or->length){ |
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/* exact split, or off the end? */ |
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if(or->next){ |
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242 |
|
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/* a split */ |
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*tail=or->next; |
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or->next=0; |
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246 |
|
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}else{ |
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248 |
|
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/* off or at the end */ |
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*tail=*head=0; |
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251 |
|
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252 |
} |
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253 |
}else{ |
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254 |
|
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255 |
/* split within a fragment */ |
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256 |
long lengthA=pos; |
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257 |
long beginB=or->begin+pos; |
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long lengthB=or->length-pos; |
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259 |
|
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/* make a new reference to tail the second piece */ |
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261 |
*tail=_fetch_ref(or->buffer->ptr.owner); |
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262 |
|
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263 |
(*tail)->buffer=or->buffer; |
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264 |
(*tail)->begin=beginB; |
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(*tail)->length=lengthB; |
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266 |
(*tail)->next=or->next; |
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_ogg_buffer_mark_one(*tail); |
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268 |
if(head && or==*head)*head=*tail; |
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269 |
|
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270 |
/* update the first piece */ |
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271 |
or->next=0; |
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272 |
or->length=lengthA; |
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273 |
|
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274 |
} |
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275 |
} |
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276 |
return ret; |
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277 |
} |
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278 |
|
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279 |
static void ogg_buffer_release_one(ogg_reference *or){ |
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ogg_buffer *ob=or->buffer; |
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281 |
ogg_buffer_state *bs=ob->ptr.owner; |
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282 |
|
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283 |
ob->refcount--; |
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284 |
if(ob->refcount==0){ |
f7e49eff3708
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285 |
bs->outstanding--; /* for the returned buffer */ |
f7e49eff3708
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286 |
ob->ptr.next=bs->unused_buffers; |
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287 |
bs->unused_buffers=ob; |
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288 |
} |
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|
289 |
|
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290 |
bs->outstanding--; /* for the returned reference */ |
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291 |
or->next=bs->unused_references; |
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292 |
bs->unused_references=or; |
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293 |
|
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294 |
_ogg_buffer_destroy(bs); /* lazy cleanup (if needed) */ |
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295 |
|
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|
296 |
} |
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|
297 |
|
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|
298 |
/* release the references, decrease the refcounts of buffers to which |
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299 |
they point, release any buffers with a refcount that drops to zero */ |
f7e49eff3708
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300 |
static void ogg_buffer_release(ogg_reference *or){ |
f7e49eff3708
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|
301 |
while(or){ |
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302 |
ogg_reference *next=or->next; |
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|
303 |
ogg_buffer_release_one(or); |
f7e49eff3708
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304 |
or=next; |
f7e49eff3708
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diff
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|
305 |
} |
f7e49eff3708
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|
306 |
} |
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|
307 |
|
f7e49eff3708
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|
308 |
static ogg_reference *ogg_buffer_pretruncate(ogg_reference *or,long pos){ |
f7e49eff3708
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|
309 |
/* release preceeding fragments we don't want */ |
f7e49eff3708
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|
310 |
while(or && pos>=or->length){ |
f7e49eff3708
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|
311 |
ogg_reference *next=or->next; |
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|
312 |
pos-=or->length; |
f7e49eff3708
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|
313 |
ogg_buffer_release_one(or); |
f7e49eff3708
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|
314 |
or=next; |
f7e49eff3708
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|
315 |
} |
f7e49eff3708
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diff
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|
316 |
if (or) { |
f7e49eff3708
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|
317 |
or->begin+=pos; |
f7e49eff3708
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|
318 |
or->length-=pos; |
f7e49eff3708
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diff
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|
319 |
} |
f7e49eff3708
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|
320 |
return or; |
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diff
changeset
|
321 |
} |
f7e49eff3708
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|
322 |
|
f7e49eff3708
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|
323 |
static ogg_reference *ogg_buffer_walk(ogg_reference *or){ |
f7e49eff3708
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|
324 |
if(!or)return NULL; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
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parents:
diff
changeset
|
325 |
while(or->next){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
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parents:
diff
changeset
|
326 |
or=or->next; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
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diff
changeset
|
327 |
} |
f7e49eff3708
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|
328 |
return(or); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
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parents:
diff
changeset
|
329 |
} |
f7e49eff3708
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parents:
diff
changeset
|
330 |
|
f7e49eff3708
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parents:
diff
changeset
|
331 |
/* *head is appended to the front end (head) of *tail; both continue to |
f7e49eff3708
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parents:
diff
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|
332 |
be valid pointers, with *tail at the tail and *head at the head */ |
f7e49eff3708
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parents:
diff
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|
333 |
static ogg_reference *ogg_buffer_cat(ogg_reference *tail, ogg_reference *head){ |
f7e49eff3708
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koda
parents:
diff
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|
334 |
if(!tail)return head; |
f7e49eff3708
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koda
parents:
diff
changeset
|
335 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
336 |
while(tail->next){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
337 |
tail=tail->next; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
338 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
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parents:
diff
changeset
|
339 |
tail->next=head; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
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parents:
diff
changeset
|
340 |
return ogg_buffer_walk(head); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
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parents:
diff
changeset
|
341 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
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parents:
diff
changeset
|
342 |
|
f7e49eff3708
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diff
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|
343 |
static void _positionB(oggbyte_buffer *b,int pos){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
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diff
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|
344 |
if(pos<b->pos){ |
f7e49eff3708
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diff
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|
345 |
/* start at beginning, scan forward */ |
f7e49eff3708
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|
346 |
b->ref=b->baseref; |
f7e49eff3708
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diff
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|
347 |
b->pos=0; |
f7e49eff3708
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parents:
diff
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|
348 |
b->end=b->pos+b->ref->length; |
f7e49eff3708
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koda
parents:
diff
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|
349 |
b->ptr=b->ref->buffer->data+b->ref->begin; |
f7e49eff3708
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parents:
diff
changeset
|
350 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
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parents:
diff
changeset
|
351 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
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parents:
diff
changeset
|
352 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
353 |
static void _positionF(oggbyte_buffer *b,int pos){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
354 |
/* scan forward for position */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
355 |
while(pos>=b->end){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
356 |
/* just seek forward */ |
f7e49eff3708
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parents:
diff
changeset
|
357 |
b->pos+=b->ref->length; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
358 |
b->ref=b->ref->next; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
359 |
b->end=b->ref->length+b->pos; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
360 |
b->ptr=b->ref->buffer->data+b->ref->begin; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
361 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
362 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
363 |
|
f7e49eff3708
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koda
parents:
diff
changeset
|
364 |
static int oggbyte_init(oggbyte_buffer *b,ogg_reference *or){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
365 |
memset(b,0,sizeof(*b)); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
366 |
if(or){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
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diff
changeset
|
367 |
b->ref=b->baseref=or; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
368 |
b->pos=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
369 |
b->end=b->ref->length; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
370 |
b->ptr=b->ref->buffer->data+b->ref->begin; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
371 |
return 0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
372 |
}else |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
373 |
return -1; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
374 |
} |
f7e49eff3708
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koda
parents:
diff
changeset
|
375 |
|
f7e49eff3708
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koda
parents:
diff
changeset
|
376 |
static void oggbyte_set4(oggbyte_buffer *b,ogg_uint32_t val,int pos){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
377 |
int i; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
378 |
_positionB(b,pos); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
379 |
for(i=0;i<4;i++){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
380 |
_positionF(b,pos); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
381 |
b->ptr[pos-b->pos]=val; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
382 |
val>>=8; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
383 |
++pos; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
384 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
385 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
386 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
387 |
static unsigned char oggbyte_read1(oggbyte_buffer *b,int pos){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
388 |
_positionB(b,pos); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
389 |
_positionF(b,pos); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
390 |
return b->ptr[pos-b->pos]; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
391 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
392 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
393 |
static ogg_uint32_t oggbyte_read4(oggbyte_buffer *b,int pos){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
394 |
ogg_uint32_t ret; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
395 |
_positionB(b,pos); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
396 |
_positionF(b,pos); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
397 |
ret=b->ptr[pos-b->pos]; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
398 |
_positionF(b,++pos); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
399 |
ret|=b->ptr[pos-b->pos]<<8; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
400 |
_positionF(b,++pos); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
401 |
ret|=b->ptr[pos-b->pos]<<16; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
402 |
_positionF(b,++pos); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
403 |
ret|=b->ptr[pos-b->pos]<<24; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
404 |
return ret; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
405 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
406 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
407 |
static ogg_int64_t oggbyte_read8(oggbyte_buffer *b,int pos){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
408 |
ogg_int64_t ret; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
409 |
unsigned char t[7]; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
410 |
int i; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
411 |
_positionB(b,pos); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
412 |
for(i=0;i<7;i++){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
413 |
_positionF(b,pos); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
414 |
t[i]=b->ptr[pos++ -b->pos]; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
415 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
416 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
417 |
_positionF(b,pos); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
418 |
ret=b->ptr[pos-b->pos]; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
419 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
420 |
for(i=6;i>=0;--i) |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
421 |
ret= ret<<8 | t[i]; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
422 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
423 |
return ret; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
424 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
425 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
426 |
/* Now we get to the actual framing code */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
427 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
428 |
int ogg_page_version(ogg_page *og){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
429 |
oggbyte_buffer ob; |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
430 |
oggbyte_init(&ob,og->header); |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
431 |
return oggbyte_read1(&ob,4); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
432 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
433 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
434 |
int ogg_page_continued(ogg_page *og){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
435 |
oggbyte_buffer ob; |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
436 |
oggbyte_init(&ob,og->header); |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
437 |
return oggbyte_read1(&ob,5)&0x01; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
438 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
439 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
440 |
int ogg_page_bos(ogg_page *og){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
441 |
oggbyte_buffer ob; |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
442 |
oggbyte_init(&ob,og->header); |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
443 |
return oggbyte_read1(&ob,5)&0x02; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
444 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
445 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
446 |
int ogg_page_eos(ogg_page *og){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
447 |
oggbyte_buffer ob; |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
448 |
oggbyte_init(&ob,og->header); |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
449 |
return oggbyte_read1(&ob,5)&0x04; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
450 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
451 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
452 |
ogg_int64_t ogg_page_granulepos(ogg_page *og){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
453 |
oggbyte_buffer ob; |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
454 |
oggbyte_init(&ob,og->header); |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
455 |
return oggbyte_read8(&ob,6); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
456 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
457 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
458 |
ogg_uint32_t ogg_page_serialno(ogg_page *og){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
459 |
oggbyte_buffer ob; |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
460 |
oggbyte_init(&ob,og->header); |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
461 |
return oggbyte_read4(&ob,14); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
462 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
463 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
464 |
ogg_uint32_t ogg_page_pageno(ogg_page *og){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
465 |
oggbyte_buffer ob; |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
466 |
oggbyte_init(&ob,og->header); |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
467 |
return oggbyte_read4(&ob,18); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
468 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
469 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
470 |
/* returns the number of packets that are completed on this page (if |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
471 |
the leading packet is begun on a previous page, but ends on this |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
472 |
page, it's counted */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
473 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
474 |
/* NOTE: |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
475 |
If a page consists of a packet begun on a previous page, and a new |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
476 |
packet begun (but not completed) on this page, the return will be: |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
477 |
ogg_page_packets(page) ==1, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
478 |
ogg_page_continued(page) !=0 |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
479 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
480 |
If a page happens to be a single packet that was begun on a |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
481 |
previous page, and spans to the next page (in the case of a three or |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
482 |
more page packet), the return will be: |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
483 |
ogg_page_packets(page) ==0, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
484 |
ogg_page_continued(page) !=0 |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
485 |
*/ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
486 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
487 |
int ogg_page_packets(ogg_page *og){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
488 |
int i; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
489 |
int n; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
490 |
int count=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
491 |
oggbyte_buffer ob; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
492 |
oggbyte_init(&ob,og->header); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
493 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
494 |
n=oggbyte_read1(&ob,26); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
495 |
for(i=0;i<n;i++) |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
496 |
if(oggbyte_read1(&ob,27+i)<255)count++; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
497 |
return(count); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
498 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
499 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
500 |
/* Static CRC calculation table. See older code in CVS for dead |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
501 |
run-time initialization code. */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
502 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
503 |
static ogg_uint32_t crc_lookup[256]={ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
504 |
0x00000000,0x04c11db7,0x09823b6e,0x0d4326d9, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
505 |
0x130476dc,0x17c56b6b,0x1a864db2,0x1e475005, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
506 |
0x2608edb8,0x22c9f00f,0x2f8ad6d6,0x2b4bcb61, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
507 |
0x350c9b64,0x31cd86d3,0x3c8ea00a,0x384fbdbd, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
508 |
0x4c11db70,0x48d0c6c7,0x4593e01e,0x4152fda9, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
509 |
0x5f15adac,0x5bd4b01b,0x569796c2,0x52568b75, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
510 |
0x6a1936c8,0x6ed82b7f,0x639b0da6,0x675a1011, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
511 |
0x791d4014,0x7ddc5da3,0x709f7b7a,0x745e66cd, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
512 |
0x9823b6e0,0x9ce2ab57,0x91a18d8e,0x95609039, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
513 |
0x8b27c03c,0x8fe6dd8b,0x82a5fb52,0x8664e6e5, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
514 |
0xbe2b5b58,0xbaea46ef,0xb7a96036,0xb3687d81, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
515 |
0xad2f2d84,0xa9ee3033,0xa4ad16ea,0xa06c0b5d, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
516 |
0xd4326d90,0xd0f37027,0xddb056fe,0xd9714b49, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
517 |
0xc7361b4c,0xc3f706fb,0xceb42022,0xca753d95, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
518 |
0xf23a8028,0xf6fb9d9f,0xfbb8bb46,0xff79a6f1, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
519 |
0xe13ef6f4,0xe5ffeb43,0xe8bccd9a,0xec7dd02d, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
520 |
0x34867077,0x30476dc0,0x3d044b19,0x39c556ae, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
521 |
0x278206ab,0x23431b1c,0x2e003dc5,0x2ac12072, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
522 |
0x128e9dcf,0x164f8078,0x1b0ca6a1,0x1fcdbb16, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
523 |
0x018aeb13,0x054bf6a4,0x0808d07d,0x0cc9cdca, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
524 |
0x7897ab07,0x7c56b6b0,0x71159069,0x75d48dde, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
525 |
0x6b93dddb,0x6f52c06c,0x6211e6b5,0x66d0fb02, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
526 |
0x5e9f46bf,0x5a5e5b08,0x571d7dd1,0x53dc6066, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
527 |
0x4d9b3063,0x495a2dd4,0x44190b0d,0x40d816ba, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
528 |
0xaca5c697,0xa864db20,0xa527fdf9,0xa1e6e04e, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
529 |
0xbfa1b04b,0xbb60adfc,0xb6238b25,0xb2e29692, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
530 |
0x8aad2b2f,0x8e6c3698,0x832f1041,0x87ee0df6, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
531 |
0x99a95df3,0x9d684044,0x902b669d,0x94ea7b2a, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
532 |
0xe0b41de7,0xe4750050,0xe9362689,0xedf73b3e, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
533 |
0xf3b06b3b,0xf771768c,0xfa325055,0xfef34de2, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
534 |
0xc6bcf05f,0xc27dede8,0xcf3ecb31,0xcbffd686, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
535 |
0xd5b88683,0xd1799b34,0xdc3abded,0xd8fba05a, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
536 |
0x690ce0ee,0x6dcdfd59,0x608edb80,0x644fc637, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
537 |
0x7a089632,0x7ec98b85,0x738aad5c,0x774bb0eb, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
538 |
0x4f040d56,0x4bc510e1,0x46863638,0x42472b8f, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
539 |
0x5c007b8a,0x58c1663d,0x558240e4,0x51435d53, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
540 |
0x251d3b9e,0x21dc2629,0x2c9f00f0,0x285e1d47, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
541 |
0x36194d42,0x32d850f5,0x3f9b762c,0x3b5a6b9b, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
542 |
0x0315d626,0x07d4cb91,0x0a97ed48,0x0e56f0ff, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
543 |
0x1011a0fa,0x14d0bd4d,0x19939b94,0x1d528623, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
544 |
0xf12f560e,0xf5ee4bb9,0xf8ad6d60,0xfc6c70d7, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
545 |
0xe22b20d2,0xe6ea3d65,0xeba91bbc,0xef68060b, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
546 |
0xd727bbb6,0xd3e6a601,0xdea580d8,0xda649d6f, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
547 |
0xc423cd6a,0xc0e2d0dd,0xcda1f604,0xc960ebb3, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
548 |
0xbd3e8d7e,0xb9ff90c9,0xb4bcb610,0xb07daba7, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
549 |
0xae3afba2,0xaafbe615,0xa7b8c0cc,0xa379dd7b, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
550 |
0x9b3660c6,0x9ff77d71,0x92b45ba8,0x9675461f, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
551 |
0x8832161a,0x8cf30bad,0x81b02d74,0x857130c3, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
552 |
0x5d8a9099,0x594b8d2e,0x5408abf7,0x50c9b640, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
553 |
0x4e8ee645,0x4a4ffbf2,0x470cdd2b,0x43cdc09c, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
554 |
0x7b827d21,0x7f436096,0x7200464f,0x76c15bf8, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
555 |
0x68860bfd,0x6c47164a,0x61043093,0x65c52d24, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
556 |
0x119b4be9,0x155a565e,0x18197087,0x1cd86d30, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
557 |
0x029f3d35,0x065e2082,0x0b1d065b,0x0fdc1bec, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
558 |
0x3793a651,0x3352bbe6,0x3e119d3f,0x3ad08088, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
559 |
0x2497d08d,0x2056cd3a,0x2d15ebe3,0x29d4f654, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
560 |
0xc5a92679,0xc1683bce,0xcc2b1d17,0xc8ea00a0, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
561 |
0xd6ad50a5,0xd26c4d12,0xdf2f6bcb,0xdbee767c, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
562 |
0xe3a1cbc1,0xe760d676,0xea23f0af,0xeee2ed18, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
563 |
0xf0a5bd1d,0xf464a0aa,0xf9278673,0xfde69bc4, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
564 |
0x89b8fd09,0x8d79e0be,0x803ac667,0x84fbdbd0, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
565 |
0x9abc8bd5,0x9e7d9662,0x933eb0bb,0x97ffad0c, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
566 |
0xafb010b1,0xab710d06,0xa6322bdf,0xa2f33668, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
567 |
0xbcb4666d,0xb8757bda,0xb5365d03,0xb1f740b4}; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
568 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
569 |
ogg_sync_state *ogg_sync_create(void){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
570 |
ogg_sync_state *oy=_ogg_calloc(1,sizeof(*oy)); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
571 |
memset(oy,0,sizeof(*oy)); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
572 |
oy->bufferpool=ogg_buffer_create(); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
573 |
return oy; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
574 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
575 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
576 |
int ogg_sync_destroy(ogg_sync_state *oy){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
577 |
if(oy){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
578 |
ogg_sync_reset(oy); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
579 |
ogg_buffer_destroy(oy->bufferpool); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
580 |
memset(oy,0,sizeof(*oy)); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
581 |
_ogg_free(oy); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
582 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
583 |
return OGG_SUCCESS; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
584 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
585 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
586 |
unsigned char *ogg_sync_bufferin(ogg_sync_state *oy, long bytes){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
587 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
588 |
/* [allocate and] expose a buffer for data submission. |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
589 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
590 |
If there is no head fragment |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
591 |
allocate one and expose it |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
592 |
else |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
593 |
if the current head fragment has sufficient unused space |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
594 |
expose it |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
595 |
else |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
596 |
if the current head fragment is unused |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
597 |
resize and expose it |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
598 |
else |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
599 |
allocate new fragment and expose it |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
600 |
*/ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
601 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
602 |
/* base case; fifo uninitialized */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
603 |
if(!oy->fifo_head){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
604 |
oy->fifo_head=oy->fifo_tail=ogg_buffer_alloc(oy->bufferpool,bytes); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
605 |
return oy->fifo_head->buffer->data; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
606 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
607 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
608 |
/* space left in current fragment case */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
609 |
if(oy->fifo_head->buffer->size- |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
610 |
oy->fifo_head->length- |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
611 |
oy->fifo_head->begin >= bytes) |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
612 |
return oy->fifo_head->buffer->data+ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
613 |
oy->fifo_head->length+oy->fifo_head->begin; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
614 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
615 |
/* current fragment is unused, but too small */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
616 |
if(!oy->fifo_head->length){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
617 |
ogg_buffer_realloc(oy->fifo_head,bytes); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
618 |
return oy->fifo_head->buffer->data+oy->fifo_head->begin; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
619 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
620 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
621 |
/* current fragment used/full; get new fragment */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
622 |
{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
623 |
ogg_reference *new=ogg_buffer_alloc(oy->bufferpool,bytes); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
624 |
oy->fifo_head->next=new; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
625 |
oy->fifo_head=new; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
626 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
627 |
return oy->fifo_head->buffer->data; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
628 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
629 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
630 |
int ogg_sync_wrote(ogg_sync_state *oy, long bytes){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
631 |
if(!oy->fifo_head)return OGG_EINVAL; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
632 |
if(oy->fifo_head->buffer->size-oy->fifo_head->length-oy->fifo_head->begin < |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
633 |
bytes)return OGG_EINVAL; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
634 |
oy->fifo_head->length+=bytes; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
635 |
oy->fifo_fill+=bytes; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
636 |
return OGG_SUCCESS; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
637 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
638 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
639 |
static ogg_uint32_t _checksum(ogg_reference *or, int bytes){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
640 |
ogg_uint32_t crc_reg=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
641 |
int j,post; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
642 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
643 |
while(or){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
644 |
unsigned char *data=or->buffer->data+or->begin; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
645 |
post=(bytes<or->length?bytes:or->length); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
646 |
for(j=0;j<post;++j) |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
647 |
crc_reg=(crc_reg<<8)^crc_lookup[((crc_reg >> 24)&0xff)^data[j]]; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
648 |
bytes-=j; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
649 |
or=or->next; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
650 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
651 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
652 |
return crc_reg; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
653 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
654 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
655 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
656 |
/* sync the stream. This is meant to be useful for finding page |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
657 |
boundaries. |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
658 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
659 |
return values for this: |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
660 |
-n) skipped n bytes |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
661 |
0) page not ready; more data (no bytes skipped) |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
662 |
n) page synced at current location; page length n bytes |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
663 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
664 |
*/ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
665 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
666 |
long ogg_sync_pageseek(ogg_sync_state *oy,ogg_page *og){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
667 |
oggbyte_buffer page; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
668 |
long bytes,ret=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
669 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
670 |
ogg_page_release(og); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
671 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
672 |
bytes=oy->fifo_fill; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
673 |
oggbyte_init(&page,oy->fifo_tail); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
674 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
675 |
if(oy->headerbytes==0){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
676 |
if(bytes<27)goto sync_out; /* not enough for even a minimal header */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
677 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
678 |
/* verify capture pattern */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
679 |
if(oggbyte_read1(&page,0)!=(int)'O' || |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
680 |
oggbyte_read1(&page,1)!=(int)'g' || |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
681 |
oggbyte_read1(&page,2)!=(int)'g' || |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
682 |
oggbyte_read1(&page,3)!=(int)'S' ) goto sync_fail; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
683 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
684 |
oy->headerbytes=oggbyte_read1(&page,26)+27; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
685 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
686 |
if(bytes<oy->headerbytes)goto sync_out; /* not enough for header + |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
687 |
seg table */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
688 |
if(oy->bodybytes==0){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
689 |
int i; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
690 |
/* count up body length in the segment table */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
691 |
for(i=0;i<oy->headerbytes-27;i++) |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
692 |
oy->bodybytes+=oggbyte_read1(&page,27+i); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
693 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
694 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
695 |
if(oy->bodybytes+oy->headerbytes>bytes)goto sync_out; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
696 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
697 |
/* we have what appears to be a complete page; last test: verify |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
698 |
checksum */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
699 |
{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
700 |
ogg_uint32_t chksum=oggbyte_read4(&page,22); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
701 |
oggbyte_set4(&page,0,22); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
702 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
703 |
/* Compare checksums; memory continues to be common access */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
704 |
if(chksum!=_checksum(oy->fifo_tail,oy->bodybytes+oy->headerbytes)){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
705 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
706 |
/* D'oh. Mismatch! Corrupt page (or miscapture and not a page |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
707 |
at all). replace the computed checksum with the one actually |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
708 |
read in; remember all the memory is common access */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
709 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
710 |
oggbyte_set4(&page,chksum,22); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
711 |
goto sync_fail; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
712 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
713 |
oggbyte_set4(&page,chksum,22); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
714 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
715 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
716 |
/* We have a page. Set up page return. */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
717 |
if(og){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
718 |
/* set up page output */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
719 |
og->header=ogg_buffer_split(&oy->fifo_tail,&oy->fifo_head,oy->headerbytes); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
720 |
og->header_len=oy->headerbytes; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
721 |
og->body=ogg_buffer_split(&oy->fifo_tail,&oy->fifo_head,oy->bodybytes); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
722 |
og->body_len=oy->bodybytes; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
723 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
724 |
/* simply advance */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
725 |
oy->fifo_tail= |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
726 |
ogg_buffer_pretruncate(oy->fifo_tail,oy->headerbytes+oy->bodybytes); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
727 |
if(!oy->fifo_tail)oy->fifo_head=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
728 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
729 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
730 |
ret=oy->headerbytes+oy->bodybytes; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
731 |
oy->unsynced=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
732 |
oy->headerbytes=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
733 |
oy->bodybytes=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
734 |
oy->fifo_fill-=ret; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
735 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
736 |
return ret; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
737 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
738 |
sync_fail: |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
739 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
740 |
oy->headerbytes=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
741 |
oy->bodybytes=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
742 |
oy->fifo_tail=ogg_buffer_pretruncate(oy->fifo_tail,1); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
743 |
ret--; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
744 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
745 |
/* search forward through fragments for possible capture */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
746 |
while(oy->fifo_tail){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
747 |
/* invariant: fifo_cursor points to a position in fifo_tail */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
748 |
unsigned char *now=oy->fifo_tail->buffer->data+oy->fifo_tail->begin; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
749 |
unsigned char *next=memchr(now, 'O', oy->fifo_tail->length); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
750 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
751 |
if(next){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
752 |
/* possible capture in this segment */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
753 |
long bytes=next-now; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
754 |
oy->fifo_tail=ogg_buffer_pretruncate(oy->fifo_tail,bytes); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
755 |
ret-=bytes; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
756 |
break; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
757 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
758 |
/* no capture. advance to next segment */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
759 |
long bytes=oy->fifo_tail->length; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
760 |
ret-=bytes; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
761 |
oy->fifo_tail=ogg_buffer_pretruncate(oy->fifo_tail,bytes); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
762 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
763 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
764 |
if(!oy->fifo_tail)oy->fifo_head=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
765 |
oy->fifo_fill+=ret; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
766 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
767 |
sync_out: |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
768 |
return ret; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
769 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
770 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
771 |
/* sync the stream and get a page. Keep trying until we find a page. |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
772 |
Supress 'sync errors' after reporting the first. |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
773 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
774 |
return values: |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
775 |
OGG_HOLE) recapture (hole in data) |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
776 |
0) need more data |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
777 |
1) page returned |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
778 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
779 |
Returns pointers into buffered data; invalidated by next call to |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
780 |
_stream, _clear, _init, or _buffer */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
781 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
782 |
int ogg_sync_pageout(ogg_sync_state *oy, ogg_page *og){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
783 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
784 |
/* all we need to do is verify a page at the head of the stream |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
785 |
buffer. If it doesn't verify, we look for the next potential |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
786 |
frame */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
787 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
788 |
while(1){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
789 |
long ret=ogg_sync_pageseek(oy,og); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
790 |
if(ret>0){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
791 |
/* have a page */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
792 |
return 1; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
793 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
794 |
if(ret==0){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
795 |
/* need more data */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
796 |
return 0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
797 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
798 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
799 |
/* head did not start a synced page... skipped some bytes */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
800 |
if(!oy->unsynced){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
801 |
oy->unsynced=1; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
802 |
return OGG_HOLE; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
803 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
804 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
805 |
/* loop. keep looking */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
806 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
807 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
808 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
809 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
810 |
/* clear things to an initial state. Good to call, eg, before seeking */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
811 |
int ogg_sync_reset(ogg_sync_state *oy){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
812 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
813 |
ogg_buffer_release(oy->fifo_tail); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
814 |
oy->fifo_tail=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
815 |
oy->fifo_head=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
816 |
oy->fifo_fill=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
817 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
818 |
oy->unsynced=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
819 |
oy->headerbytes=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
820 |
oy->bodybytes=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
821 |
return OGG_SUCCESS; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
822 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
823 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
824 |
ogg_stream_state *ogg_stream_create(int serialno){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
825 |
ogg_stream_state *os=_ogg_calloc(1,sizeof(*os)); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
826 |
os->serialno=serialno; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
827 |
os->pageno=-1; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
828 |
return os; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
829 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
830 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
831 |
int ogg_stream_destroy(ogg_stream_state *os){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
832 |
if(os){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
833 |
ogg_buffer_release(os->header_tail); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
834 |
ogg_buffer_release(os->body_tail); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
835 |
memset(os,0,sizeof(*os)); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
836 |
_ogg_free(os); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
837 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
838 |
return OGG_SUCCESS; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
839 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
840 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
841 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
842 |
#define FINFLAG 0x80000000UL |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
843 |
#define FINMASK 0x7fffffffUL |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
844 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
845 |
static void _next_lace(oggbyte_buffer *ob,ogg_stream_state *os){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
846 |
/* search ahead one lace */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
847 |
os->body_fill_next=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
848 |
while(os->laceptr<os->lacing_fill){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
849 |
int val=oggbyte_read1(ob,27+os->laceptr++); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
850 |
os->body_fill_next+=val; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
851 |
if(val<255){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
852 |
os->body_fill_next|=FINFLAG; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
853 |
os->clearflag=1; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
854 |
break; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
855 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
856 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
857 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
858 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
859 |
static void _span_queued_page(ogg_stream_state *os){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
860 |
while( !(os->body_fill&FINFLAG) ){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
861 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
862 |
if(!os->header_tail)break; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
863 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
864 |
/* first flush out preceeding page header (if any). Body is |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
865 |
flushed as it's consumed, so that's not done here. */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
866 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
867 |
if(os->lacing_fill>=0) |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
868 |
os->header_tail=ogg_buffer_pretruncate(os->header_tail, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
869 |
os->lacing_fill+27); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
870 |
os->lacing_fill=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
871 |
os->laceptr=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
872 |
os->clearflag=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
873 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
874 |
if(!os->header_tail){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
875 |
os->header_head=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
876 |
break; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
877 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
878 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
879 |
/* process/prepare next page, if any */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
880 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
881 |
long pageno; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
882 |
oggbyte_buffer ob; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
883 |
ogg_page og; /* only for parsing header values */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
884 |
og.header=os->header_tail; /* only for parsing header values */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
885 |
pageno=ogg_page_pageno(&og); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
886 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
887 |
oggbyte_init(&ob,os->header_tail); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
888 |
os->lacing_fill=oggbyte_read1(&ob,26); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
889 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
890 |
/* are we in sequence? */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
891 |
if(pageno!=os->pageno){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
892 |
if(os->pageno==-1) /* indicates seek or reset */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
893 |
os->holeflag=1; /* set for internal use */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
894 |
else |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
895 |
os->holeflag=2; /* set for external reporting */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
896 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
897 |
os->body_tail=ogg_buffer_pretruncate(os->body_tail, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
898 |
os->body_fill); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
899 |
if(os->body_tail==0)os->body_head=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
900 |
os->body_fill=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
901 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
902 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
903 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
904 |
if(ogg_page_continued(&og)){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
905 |
if(os->body_fill==0){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
906 |
/* continued packet, but no preceeding data to continue */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
907 |
/* dump the first partial packet on the page */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
908 |
_next_lace(&ob,os); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
909 |
os->body_tail= |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
910 |
ogg_buffer_pretruncate(os->body_tail,os->body_fill_next&FINMASK); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
911 |
if(os->body_tail==0)os->body_head=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
912 |
/* set span flag */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
913 |
if(!os->spanflag && !os->holeflag)os->spanflag=2; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
914 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
915 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
916 |
if(os->body_fill>0){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
917 |
/* preceeding data to continue, but not a continued page */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
918 |
/* dump body_fill */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
919 |
os->body_tail=ogg_buffer_pretruncate(os->body_tail, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
920 |
os->body_fill); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
921 |
if(os->body_tail==0)os->body_head=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
922 |
os->body_fill=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
923 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
924 |
/* set espan flag */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
925 |
if(!os->spanflag && !os->holeflag)os->spanflag=2; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
926 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
927 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
928 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
929 |
if(os->laceptr<os->lacing_fill){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
930 |
os->granulepos=ogg_page_granulepos(&og); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
931 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
932 |
/* get current packet size & flag */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
933 |
_next_lace(&ob,os); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
934 |
os->body_fill+=os->body_fill_next; /* addition handles the flag fine; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
935 |
unsigned on purpose */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
936 |
/* ...and next packet size & flag */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
937 |
_next_lace(&ob,os); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
938 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
939 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
940 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
941 |
os->pageno=pageno+1; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
942 |
os->e_o_s=ogg_page_eos(&og); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
943 |
os->b_o_s=ogg_page_bos(&og); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
944 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
945 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
946 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
947 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
948 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
949 |
/* add the incoming page to the stream state; we decompose the page |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
950 |
into packet segments here as well. */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
951 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
952 |
int ogg_stream_pagein(ogg_stream_state *os, ogg_page *og){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
953 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
954 |
int serialno=ogg_page_serialno(og); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
955 |
int version=ogg_page_version(og); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
956 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
957 |
/* check the serial number */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
958 |
if(serialno!=os->serialno){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
959 |
ogg_page_release(og); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
960 |
return OGG_ESERIAL; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
961 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
962 |
if(version>0){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
963 |
ogg_page_release(og); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
964 |
return OGG_EVERSION; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
965 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
966 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
967 |
/* add to fifos */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
968 |
if(!os->body_tail){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
969 |
os->body_tail=og->body; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
970 |
os->body_head=ogg_buffer_walk(og->body); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
971 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
972 |
os->body_head=ogg_buffer_cat(os->body_head,og->body); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
973 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
974 |
if(!os->header_tail){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
975 |
os->header_tail=og->header; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
976 |
os->header_head=ogg_buffer_walk(og->header); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
977 |
os->lacing_fill=-27; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
978 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
979 |
os->header_head=ogg_buffer_cat(os->header_head,og->header); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
980 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
981 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
982 |
memset(og,0,sizeof(*og)); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
983 |
return OGG_SUCCESS; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
984 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
985 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
986 |
int ogg_stream_reset(ogg_stream_state *os){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
987 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
988 |
ogg_buffer_release(os->header_tail); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
989 |
ogg_buffer_release(os->body_tail); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
990 |
os->header_tail=os->header_head=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
991 |
os->body_tail=os->body_head=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
992 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
993 |
os->e_o_s=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
994 |
os->b_o_s=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
995 |
os->pageno=-1; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
996 |
os->packetno=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
997 |
os->granulepos=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
998 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
999 |
os->body_fill=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1000 |
os->lacing_fill=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1001 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1002 |
os->holeflag=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1003 |
os->spanflag=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1004 |
os->clearflag=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1005 |
os->laceptr=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1006 |
os->body_fill_next=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1007 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1008 |
return OGG_SUCCESS; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1009 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1010 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1011 |
int ogg_stream_reset_serialno(ogg_stream_state *os,int serialno){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1012 |
ogg_stream_reset(os); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1013 |
os->serialno=serialno; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1014 |
return OGG_SUCCESS; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1015 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1016 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1017 |
static int _packetout(ogg_stream_state *os,ogg_packet *op,int adv){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1018 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1019 |
ogg_packet_release(op); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1020 |
_span_queued_page(os); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1021 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1022 |
if(os->holeflag){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1023 |
int temp=os->holeflag; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1024 |
if(os->clearflag) |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1025 |
os->holeflag=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1026 |
else |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1027 |
os->holeflag=1; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1028 |
if(temp==2){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1029 |
os->packetno++; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1030 |
return OGG_HOLE; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1031 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1032 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1033 |
if(os->spanflag){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1034 |
int temp=os->spanflag; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1035 |
if(os->clearflag) |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1036 |
os->spanflag=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1037 |
else |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1038 |
os->spanflag=1; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1039 |
if(temp==2){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1040 |
os->packetno++; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1041 |
return OGG_SPAN; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1042 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1043 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1044 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1045 |
if(!(os->body_fill&FINFLAG)) return 0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1046 |
if(!op && !adv)return 1; /* just using peek as an inexpensive way |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1047 |
to ask if there's a whole packet |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1048 |
waiting */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1049 |
if(op){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1050 |
op->b_o_s=os->b_o_s; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1051 |
if(os->e_o_s && os->body_fill_next==0) |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1052 |
op->e_o_s=os->e_o_s; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1053 |
else |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1054 |
op->e_o_s=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1055 |
if( (os->body_fill&FINFLAG) && !(os->body_fill_next&FINFLAG) ) |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1056 |
op->granulepos=os->granulepos; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1057 |
else |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1058 |
op->granulepos=-1; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1059 |
op->packetno=os->packetno; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1060 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1061 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1062 |
if(adv){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1063 |
oggbyte_buffer ob; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1064 |
oggbyte_init(&ob,os->header_tail); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1065 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1066 |
/* split the body contents off */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1067 |
if(op){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1068 |
op->packet=ogg_buffer_split(&os->body_tail,&os->body_head, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1069 |
os->body_fill&FINMASK); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1070 |
op->bytes=os->body_fill&FINMASK; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1071 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1072 |
os->body_tail=ogg_buffer_pretruncate(os->body_tail, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1073 |
os->body_fill&FINMASK); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1074 |
if(os->body_tail==0)os->body_head=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1075 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1076 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1077 |
/* update lacing pointers */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1078 |
os->body_fill=os->body_fill_next; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1079 |
_next_lace(&ob,os); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1080 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1081 |
if(op){ |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
1082 |
op->packet=ogg_buffer_sub(os->body_tail,0,os->body_fill&FINMASK); |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1083 |
op->bytes=os->body_fill&FINMASK; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1084 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1085 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1086 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1087 |
if(adv){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1088 |
os->packetno++; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1089 |
os->b_o_s=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1090 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1091 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1092 |
return 1; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1093 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1094 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
1095 |
int ogg_stream_packetout(ogg_stream_state *os,ogg_packet *op){ |
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1096 |
return _packetout(os,op,1); |
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1097 |
} |
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1098 |
|
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1099 |
int ogg_stream_packetpeek(ogg_stream_state *os,ogg_packet *op){ |
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1100 |
return _packetout(os,op,0); |
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1101 |
} |
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1102 |
|
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1103 |
int ogg_packet_release(ogg_packet *op) { |
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1104 |
if(op){ |
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1105 |
ogg_buffer_release(op->packet); |
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1106 |
memset(op, 0, sizeof(*op)); |
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1107 |
} |
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1108 |
return OGG_SUCCESS; |
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1109 |
} |
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1110 |
|
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1111 |
int ogg_page_release(ogg_page *og) { |
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1112 |
if(og){ |
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1113 |
ogg_buffer_release(og->header); |
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|
1114 |
ogg_buffer_release(og->body); |
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1115 |
memset(og, 0, sizeof(*og)); |
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|
1116 |
} |
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1117 |
return OGG_SUCCESS; |
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1118 |
} |
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|
1119 |
|
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|
1120 |
void ogg_page_dup(ogg_page *dup,ogg_page *orig){ |
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|
1121 |
dup->header_len=orig->header_len; |
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|
1122 |
dup->body_len=orig->body_len; |
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|
1123 |
dup->header=ogg_buffer_dup(orig->header); |
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1124 |
dup->body=ogg_buffer_dup(orig->body); |
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|
1125 |
} |
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|
1126 |