author | sheepluva |
Sat, 29 Oct 2011 09:19:04 +0200 | |
changeset 6225 | 505643d4c23d |
parent 5170 | f7e49eff3708 |
permissions | -rw-r--r-- |
5170
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1 |
/******************************************************************** |
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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 1994-2002 * |
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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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|
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function: basic codebook pack/unpack/code/decode operations |
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|
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********************************************************************/ |
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|
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#include <stdlib.h> |
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#include <string.h> |
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#include <math.h> |
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#include "ogg.h" |
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#include "ivorbiscodec.h" |
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#include "codebook.h" |
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#include "misc.h" |
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/* unpacks a codebook from the packet buffer into the codebook struct, |
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readies the codebook auxiliary structures for decode *************/ |
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int vorbis_staticbook_unpack(oggpack_buffer *opb,static_codebook *s){ |
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long i,j; |
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memset(s,0,sizeof(*s)); |
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/* make sure alignment is correct */ |
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if(oggpack_read(opb,24)!=0x564342)goto _eofout; |
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|
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/* first the basic parameters */ |
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s->dim=oggpack_read(opb,16); |
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s->entries=oggpack_read(opb,24); |
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if(s->entries==-1)goto _eofout; |
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|
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/* codeword ordering.... length ordered or unordered? */ |
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switch((int)oggpack_read(opb,1)){ |
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case 0: |
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/* unordered */ |
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44 |
s->lengthlist=(long *)_ogg_malloc(sizeof(*s->lengthlist)*s->entries); |
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/* allocated but unused entries? */ |
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if(oggpack_read(opb,1)){ |
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/* yes, unused entries */ |
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49 |
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for(i=0;i<s->entries;i++){ |
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if(oggpack_read(opb,1)){ |
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long num=oggpack_read(opb,5); |
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if(num==-1)goto _eofout; |
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s->lengthlist[i]=num+1; |
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}else |
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s->lengthlist[i]=0; |
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} |
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}else{ |
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/* all entries used; no tagging */ |
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for(i=0;i<s->entries;i++){ |
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long num=oggpack_read(opb,5); |
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if(num==-1)goto _eofout; |
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s->lengthlist[i]=num+1; |
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} |
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} |
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66 |
|
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break; |
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case 1: |
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/* ordered */ |
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{ |
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long length=oggpack_read(opb,5)+1; |
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72 |
s->lengthlist=(long *)_ogg_malloc(sizeof(*s->lengthlist)*s->entries); |
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73 |
|
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74 |
for(i=0;i<s->entries;){ |
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long num=oggpack_read(opb,_ilog(s->entries-i)); |
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if(num==-1)goto _eofout; |
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77 |
for(j=0;j<num && i<s->entries;j++,i++) |
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s->lengthlist[i]=length; |
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79 |
length++; |
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80 |
} |
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81 |
} |
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82 |
break; |
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83 |
default: |
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84 |
/* EOF */ |
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85 |
return(-1); |
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86 |
} |
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87 |
|
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88 |
/* Do we have a mapping to unpack? */ |
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89 |
switch((s->maptype=oggpack_read(opb,4))){ |
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90 |
case 0: |
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91 |
/* no mapping */ |
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92 |
break; |
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93 |
case 1: case 2: |
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94 |
/* implicitly populated value mapping */ |
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95 |
/* explicitly populated value mapping */ |
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96 |
|
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97 |
s->q_min=oggpack_read(opb,32); |
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98 |
s->q_delta=oggpack_read(opb,32); |
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99 |
s->q_quant=oggpack_read(opb,4)+1; |
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100 |
s->q_sequencep=oggpack_read(opb,1); |
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101 |
|
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102 |
{ |
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103 |
int quantvals=0; |
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104 |
switch(s->maptype){ |
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105 |
case 1: |
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106 |
quantvals=_book_maptype1_quantvals(s); |
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107 |
break; |
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108 |
case 2: |
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109 |
quantvals=s->entries*s->dim; |
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110 |
break; |
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111 |
} |
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112 |
|
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113 |
/* quantized values */ |
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114 |
s->quantlist=(long *)_ogg_malloc(sizeof(*s->quantlist)*quantvals); |
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115 |
for(i=0;i<quantvals;i++) |
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116 |
s->quantlist[i]=oggpack_read(opb,s->q_quant); |
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117 |
|
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118 |
if(quantvals&&s->quantlist[quantvals-1]==-1)goto _eofout; |
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119 |
} |
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120 |
break; |
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121 |
default: |
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122 |
goto _errout; |
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} |
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124 |
|
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/* all set */ |
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126 |
return(0); |
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127 |
|
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128 |
_errout: |
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129 |
_eofout: |
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vorbis_staticbook_clear(s); |
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131 |
return(-1); |
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132 |
} |
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133 |
|
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134 |
/* the 'eliminate the decode tree' optimization actually requires the |
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135 |
codewords to be MSb first, not LSb. This is an annoying inelegancy |
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136 |
(and one of the first places where carefully thought out design |
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137 |
turned out to be wrong; Vorbis II and future Ogg codecs should go |
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138 |
to an MSb bitpacker), but not actually the huge hit it appears to |
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139 |
be. The first-stage decode table catches most words so that |
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140 |
bitreverse is not in the main execution path. */ |
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141 |
|
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static ogg_uint32_t bitreverse(ogg_uint32_t x){ |
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x= ((x>>16)&0x0000ffff) | ((x<<16)&0xffff0000); |
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x= ((x>> 8)&0x00ff00ff) | ((x<< 8)&0xff00ff00); |
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x= ((x>> 4)&0x0f0f0f0f) | ((x<< 4)&0xf0f0f0f0); |
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x= ((x>> 2)&0x33333333) | ((x<< 2)&0xcccccccc); |
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return((x>> 1)&0x55555555) | ((x<< 1)&0xaaaaaaaa); |
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148 |
} |
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149 |
|
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150 |
STIN long decode_packed_entry_number(codebook *book, |
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oggpack_buffer *b){ |
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int read=book->dec_maxlength; |
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long lo,hi; |
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long lok = oggpack_look(b,book->dec_firsttablen); |
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155 |
|
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if (lok >= 0) { |
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long entry = book->dec_firsttable[lok]; |
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158 |
if(entry&0x80000000UL){ |
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lo=(entry>>15)&0x7fff; |
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hi=book->used_entries-(entry&0x7fff); |
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161 |
}else{ |
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oggpack_adv(b, book->dec_codelengths[entry-1]); |
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return(entry-1); |
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164 |
} |
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}else{ |
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lo=0; |
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hi=book->used_entries; |
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168 |
} |
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169 |
|
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lok = oggpack_look(b, read); |
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171 |
|
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172 |
while(lok<0 && read>1) |
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lok = oggpack_look(b, --read); |
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174 |
|
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175 |
if(lok<0){ |
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176 |
oggpack_adv(b,1); /* force eop */ |
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177 |
return -1; |
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178 |
} |
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179 |
|
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180 |
/* bisect search for the codeword in the ordered list */ |
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181 |
{ |
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ogg_uint32_t testword=bitreverse((ogg_uint32_t)lok); |
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183 |
|
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184 |
while(hi-lo>1){ |
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185 |
long p=(hi-lo)>>1; |
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186 |
long test=book->codelist[lo+p]>testword; |
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lo+=p&(test-1); |
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188 |
hi-=p&(-test); |
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189 |
} |
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190 |
|
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191 |
if(book->dec_codelengths[lo]<=read){ |
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192 |
oggpack_adv(b, book->dec_codelengths[lo]); |
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193 |
return(lo); |
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194 |
} |
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195 |
} |
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196 |
|
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197 |
oggpack_adv(b, read+1); |
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198 |
return(-1); |
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199 |
} |
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200 |
|
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201 |
/* Decode side is specced and easier, because we don't need to find |
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202 |
matches using different criteria; we simply read and map. There are |
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203 |
two things we need to do 'depending': |
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204 |
|
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205 |
We may need to support interleave. We don't really, but it's |
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206 |
convenient to do it here rather than rebuild the vector later. |
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207 |
|
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208 |
Cascades may be additive or multiplicitive; this is not inherent in |
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209 |
the codebook, but set in the code using the codebook. Like |
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210 |
interleaving, it's easiest to do it here. |
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211 |
addmul==0 -> declarative (set the value) |
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212 |
addmul==1 -> additive |
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213 |
addmul==2 -> multiplicitive */ |
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214 |
|
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/* returns the [original, not compacted] entry number or -1 on eof *********/ |
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216 |
long vorbis_book_decode(codebook *book, oggpack_buffer *b){ |
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217 |
if(book->used_entries>0){ |
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218 |
long packed_entry=decode_packed_entry_number(book,b); |
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219 |
if(packed_entry>=0) |
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220 |
return(book->dec_index[packed_entry]); |
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221 |
} |
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222 |
|
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223 |
/* if there's no dec_index, the codebook unpacking isn't collapsed */ |
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224 |
return(-1); |
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225 |
} |
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226 |
|
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227 |
/* returns 0 on OK or -1 on eof *************************************/ |
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228 |
long vorbis_book_decodevs_add(codebook *book,ogg_int32_t *a, |
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229 |
oggpack_buffer *b,int n,int point){ |
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230 |
if(book->used_entries>0){ |
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231 |
int step=n/book->dim; |
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232 |
long *entry = (long *)alloca(sizeof(*entry)*step); |
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233 |
ogg_int32_t **t = (ogg_int32_t **)alloca(sizeof(*t)*step); |
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234 |
int i,j,o; |
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235 |
int shift=point-book->binarypoint; |
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236 |
|
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237 |
if(shift>=0){ |
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238 |
for (i = 0; i < step; i++) { |
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239 |
entry[i]=decode_packed_entry_number(book,b); |
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240 |
if(entry[i]==-1)return(-1); |
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241 |
t[i] = book->valuelist+entry[i]*book->dim; |
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242 |
} |
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243 |
for(i=0,o=0;i<book->dim;i++,o+=step) |
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244 |
for (j=0;j<step;j++) |
f7e49eff3708
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koda
parents:
diff
changeset
|
245 |
a[o+j]+=t[j][i]>>shift; |
f7e49eff3708
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koda
parents:
diff
changeset
|
246 |
}else{ |
f7e49eff3708
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koda
parents:
diff
changeset
|
247 |
for (i = 0; i < step; i++) { |
f7e49eff3708
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koda
parents:
diff
changeset
|
248 |
entry[i]=decode_packed_entry_number(book,b); |
f7e49eff3708
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koda
parents:
diff
changeset
|
249 |
if(entry[i]==-1)return(-1); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
250 |
t[i] = book->valuelist+entry[i]*book->dim; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
251 |
} |
f7e49eff3708
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koda
parents:
diff
changeset
|
252 |
for(i=0,o=0;i<book->dim;i++,o+=step) |
f7e49eff3708
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koda
parents:
diff
changeset
|
253 |
for (j=0;j<step;j++) |
f7e49eff3708
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koda
parents:
diff
changeset
|
254 |
a[o+j]+=t[j][i]<<-shift; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
255 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
256 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
257 |
return(0); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
258 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
259 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
260 |
long vorbis_book_decodev_add(codebook *book,ogg_int32_t *a, |
f7e49eff3708
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koda
parents:
diff
changeset
|
261 |
oggpack_buffer *b,int n,int point){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
262 |
if(book->used_entries>0){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
263 |
int i,j,entry; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
264 |
ogg_int32_t *t; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
265 |
int shift=point-book->binarypoint; |
f7e49eff3708
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koda
parents:
diff
changeset
|
266 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
267 |
if(shift>=0){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
268 |
for(i=0;i<n;){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
269 |
entry = decode_packed_entry_number(book,b); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
270 |
if(entry==-1)return(-1); |
f7e49eff3708
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koda
parents:
diff
changeset
|
271 |
t = book->valuelist+entry*book->dim; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
272 |
for (j=0;j<book->dim;) |
f7e49eff3708
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koda
parents:
diff
changeset
|
273 |
a[i++]+=t[j++]>>shift; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
274 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
275 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
276 |
for(i=0;i<n;){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
277 |
entry = decode_packed_entry_number(book,b); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
278 |
if(entry==-1)return(-1); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
279 |
t = book->valuelist+entry*book->dim; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
280 |
for (j=0;j<book->dim;) |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
281 |
a[i++]+=t[j++]<<-shift; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
282 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
283 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
284 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
285 |
return(0); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
286 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
287 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
288 |
long vorbis_book_decodev_set(codebook *book,ogg_int32_t *a, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
289 |
oggpack_buffer *b,int n,int point){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
290 |
if(book->used_entries>0){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
291 |
int i,j,entry; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
292 |
ogg_int32_t *t; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
293 |
int shift=point-book->binarypoint; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
294 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
295 |
if(shift>=0){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
296 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
297 |
for(i=0;i<n;){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
298 |
entry = decode_packed_entry_number(book,b); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
299 |
if(entry==-1)return(-1); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
300 |
t = book->valuelist+entry*book->dim; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
301 |
for (j=0;j<book->dim;){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
302 |
a[i++]=t[j++]>>shift; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
303 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
304 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
305 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
306 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
307 |
for(i=0;i<n;){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
308 |
entry = decode_packed_entry_number(book,b); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
309 |
if(entry==-1)return(-1); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
310 |
t = book->valuelist+entry*book->dim; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
311 |
for (j=0;j<book->dim;){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
312 |
a[i++]=t[j++]<<-shift; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
313 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
314 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
315 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
316 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
317 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
318 |
int i,j; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
319 |
for(i=0;i<n;){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
320 |
for (j=0;j<book->dim;){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
321 |
a[i++]=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
322 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
323 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
324 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
325 |
return(0); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
326 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
327 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
328 |
long vorbis_book_decodevv_add(codebook *book,ogg_int32_t **a,\ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
329 |
long offset,int ch, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
330 |
oggpack_buffer *b,int n,int point){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
331 |
if(book->used_entries>0){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
332 |
long i,j,entry; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
333 |
int chptr=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
334 |
int shift=point-book->binarypoint; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
335 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
336 |
if(shift>=0){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
337 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
338 |
for(i=offset;i<offset+n;){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
339 |
entry = decode_packed_entry_number(book,b); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
340 |
if(entry==-1)return(-1); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
341 |
{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
342 |
const ogg_int32_t *t = book->valuelist+entry*book->dim; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
343 |
for (j=0;j<book->dim;j++){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
344 |
a[chptr++][i]+=t[j]>>shift; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
345 |
if(chptr==ch){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
346 |
chptr=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
347 |
i++; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
348 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
349 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
350 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
351 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
352 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
353 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
354 |
for(i=offset;i<offset+n;){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
355 |
entry = decode_packed_entry_number(book,b); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
356 |
if(entry==-1)return(-1); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
357 |
{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
358 |
const ogg_int32_t *t = book->valuelist+entry*book->dim; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
359 |
for (j=0;j<book->dim;j++){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
360 |
a[chptr++][i]+=t[j]<<-shift; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
361 |
if(chptr==ch){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
362 |
chptr=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
363 |
i++; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
364 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
365 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
366 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
367 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
368 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
369 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
370 |
return(0); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
371 |
} |