author | orange.hg@gmail.com |
Sat, 25 Jun 2011 15:10:08 +0000 | |
changeset 5312 | 85df559b85cd |
parent 5170 | f7e49eff3708 |
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 1994-2002 * |
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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: residue backend 0, 1 and 2 implementation |
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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 "codec_internal.h" |
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#include "registry.h" |
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#include "codebook.h" |
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#include "misc.h" |
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#include "os.h" |
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#include "block.h" |
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typedef struct { |
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vorbis_info_residue0 *info; |
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int map; |
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int parts; |
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int stages; |
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codebook *fullbooks; |
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codebook *phrasebook; |
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codebook ***partbooks; |
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int partvals; |
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int **decodemap; |
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} vorbis_look_residue0; |
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void res0_free_info(vorbis_info_residue *i){ |
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vorbis_info_residue0 *info=(vorbis_info_residue0 *)i; |
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if(info){ |
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memset(info,0,sizeof(*info)); |
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_ogg_free(info); |
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} |
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} |
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void res0_free_look(vorbis_look_residue *i){ |
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int j; |
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if(i){ |
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vorbis_look_residue0 *look=(vorbis_look_residue0 *)i; |
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for(j=0;j<look->parts;j++) |
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if(look->partbooks[j])_ogg_free(look->partbooks[j]); |
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_ogg_free(look->partbooks); |
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for(j=0;j<look->partvals;j++) |
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_ogg_free(look->decodemap[j]); |
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_ogg_free(look->decodemap); |
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memset(look,0,sizeof(*look)); |
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_ogg_free(look); |
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} |
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} |
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static int ilog(unsigned int v){ |
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int ret=0; |
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while(v){ |
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ret++; |
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v>>=1; |
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} |
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return(ret); |
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} |
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static int icount(unsigned int v){ |
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int ret=0; |
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while(v){ |
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ret+=v&1; |
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v>>=1; |
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} |
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return(ret); |
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} |
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/* vorbis_info is for range checking */ |
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vorbis_info_residue *res0_unpack(vorbis_info *vi,oggpack_buffer *opb){ |
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int j,acc=0; |
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vorbis_info_residue0 *info=(vorbis_info_residue0 *)_ogg_calloc(1,sizeof(*info)); |
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codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; |
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info->begin=oggpack_read(opb,24); |
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info->end=oggpack_read(opb,24); |
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info->grouping=oggpack_read(opb,24)+1; |
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info->partitions=oggpack_read(opb,6)+1; |
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info->groupbook=oggpack_read(opb,8); |
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for(j=0;j<info->partitions;j++){ |
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int cascade=oggpack_read(opb,3); |
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if(oggpack_read(opb,1)) |
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cascade|=(oggpack_read(opb,5)<<3); |
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info->secondstages[j]=cascade; |
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acc+=icount(cascade); |
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} |
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for(j=0;j<acc;j++) |
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info->booklist[j]=oggpack_read(opb,8); |
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if(info->groupbook>=ci->books)goto errout; |
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for(j=0;j<acc;j++) |
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if(info->booklist[j]>=ci->books)goto errout; |
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return(info); |
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errout: |
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res0_free_info(info); |
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return(NULL); |
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} |
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vorbis_look_residue *res0_look(vorbis_dsp_state *vd,vorbis_info_mode *vm, |
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123 |
vorbis_info_residue *vr){ |
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124 |
vorbis_info_residue0 *info=(vorbis_info_residue0 *)vr; |
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125 |
vorbis_look_residue0 *look=(vorbis_look_residue0 *)_ogg_calloc(1,sizeof(*look)); |
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126 |
codec_setup_info *ci=(codec_setup_info *)vd->vi->codec_setup; |
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127 |
|
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|
128 |
int j,k,acc=0; |
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|
129 |
int dim; |
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|
130 |
int maxstage=0; |
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|
131 |
look->info=info; |
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|
132 |
look->map=vm->mapping; |
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|
133 |
|
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|
134 |
look->parts=info->partitions; |
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|
135 |
look->fullbooks=ci->fullbooks; |
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|
136 |
look->phrasebook=ci->fullbooks+info->groupbook; |
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|
137 |
dim=look->phrasebook->dim; |
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|
138 |
|
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139 |
look->partbooks=(codebook ***)_ogg_calloc(look->parts,sizeof(*look->partbooks)); |
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|
140 |
|
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|
141 |
for(j=0;j<look->parts;j++){ |
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|
142 |
int stages=ilog(info->secondstages[j]); |
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|
143 |
if(stages){ |
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144 |
if(stages>maxstage)maxstage=stages; |
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145 |
look->partbooks[j]=(codebook **)_ogg_calloc(stages,sizeof(*look->partbooks[j])); |
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|
146 |
for(k=0;k<stages;k++) |
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147 |
if(info->secondstages[j]&(1<<k)){ |
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|
148 |
look->partbooks[j][k]=ci->fullbooks+info->booklist[acc++]; |
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|
149 |
#ifdef TRAIN_RES |
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150 |
look->training_data[k][j]=calloc(look->partbooks[j][k]->entries, |
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151 |
sizeof(***look->training_data)); |
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152 |
#endif |
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153 |
} |
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|
154 |
} |
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|
155 |
} |
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|
156 |
|
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|
157 |
look->partvals=look->parts; |
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|
158 |
for(j=1;j<dim;j++)look->partvals*=look->parts; |
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|
159 |
look->stages=maxstage; |
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|
160 |
look->decodemap=(int **)_ogg_malloc(look->partvals*sizeof(*look->decodemap)); |
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|
161 |
for(j=0;j<look->partvals;j++){ |
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|
162 |
long val=j; |
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|
163 |
long mult=look->partvals/look->parts; |
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164 |
look->decodemap[j]=(int *)_ogg_malloc(dim*sizeof(*look->decodemap[j])); |
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|
165 |
for(k=0;k<dim;k++){ |
f7e49eff3708
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166 |
long deco=val/mult; |
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|
167 |
val-=deco*mult; |
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168 |
mult/=look->parts; |
f7e49eff3708
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169 |
look->decodemap[j][k]=deco; |
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|
170 |
} |
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|
171 |
} |
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diff
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|
172 |
|
f7e49eff3708
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|
173 |
return(look); |
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diff
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|
174 |
} |
f7e49eff3708
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|
175 |
|
f7e49eff3708
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diff
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|
176 |
|
f7e49eff3708
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|
177 |
/* a truncated packet here just means 'stop working'; it's not an error */ |
f7e49eff3708
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|
178 |
static int _01inverse(vorbis_block *vb,vorbis_look_residue *vl, |
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|
179 |
ogg_int32_t **in,int ch, |
f7e49eff3708
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|
180 |
long (*decodepart)(codebook *, ogg_int32_t *, |
f7e49eff3708
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|
181 |
oggpack_buffer *,int,int)){ |
f7e49eff3708
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diff
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|
182 |
|
f7e49eff3708
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diff
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|
183 |
long i,j,k,l,s; |
f7e49eff3708
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|
184 |
vorbis_look_residue0 *look=(vorbis_look_residue0 *)vl; |
f7e49eff3708
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|
185 |
vorbis_info_residue0 *info=look->info; |
f7e49eff3708
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diff
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|
186 |
|
f7e49eff3708
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|
187 |
/* move all this setup out later */ |
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|
188 |
int samples_per_partition=info->grouping; |
f7e49eff3708
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|
189 |
int partitions_per_word=look->phrasebook->dim; |
f7e49eff3708
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|
190 |
int max=vb->pcmend>>1; |
f7e49eff3708
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|
191 |
int end=(info->end<max?info->end:max); |
f7e49eff3708
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|
192 |
int n=end-info->begin; |
f7e49eff3708
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diff
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|
193 |
|
f7e49eff3708
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|
194 |
if(n>0){ |
f7e49eff3708
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|
195 |
int partvals=n/samples_per_partition; |
f7e49eff3708
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|
196 |
int partwords=(partvals+partitions_per_word-1)/partitions_per_word; |
f7e49eff3708
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|
197 |
int ***partword=(int ***)alloca(ch*sizeof(*partword)); |
f7e49eff3708
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|
198 |
|
f7e49eff3708
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|
199 |
for(j=0;j<ch;j++) |
f7e49eff3708
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|
200 |
partword[j]=(int **)_vorbis_block_alloc(vb,partwords*sizeof(*partword[j])); |
f7e49eff3708
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|
201 |
|
f7e49eff3708
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|
202 |
for(s=0;s<look->stages;s++){ |
f7e49eff3708
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diff
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|
203 |
|
f7e49eff3708
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|
204 |
/* each loop decodes on partition codeword containing |
f7e49eff3708
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|
205 |
partitions_pre_word partitions */ |
f7e49eff3708
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diff
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|
206 |
for(i=0,l=0;i<partvals;l++){ |
f7e49eff3708
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|
207 |
if(s==0){ |
f7e49eff3708
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|
208 |
/* fetch the partition word for each channel */ |
f7e49eff3708
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|
209 |
for(j=0;j<ch;j++){ |
f7e49eff3708
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|
210 |
int temp=vorbis_book_decode(look->phrasebook,&vb->opb); |
f7e49eff3708
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|
211 |
if(temp==-1)goto eopbreak; |
f7e49eff3708
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|
212 |
partword[j][l]=look->decodemap[temp]; |
f7e49eff3708
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|
213 |
if(partword[j][l]==NULL)goto errout; |
f7e49eff3708
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|
214 |
} |
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|
215 |
} |
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diff
changeset
|
216 |
|
f7e49eff3708
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|
217 |
/* now we decode residual values for the partitions */ |
f7e49eff3708
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|
218 |
for(k=0;k<partitions_per_word && i<partvals;k++,i++) |
f7e49eff3708
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|
219 |
for(j=0;j<ch;j++){ |
f7e49eff3708
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220 |
long offset=info->begin+i*samples_per_partition; |
f7e49eff3708
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221 |
if(info->secondstages[partword[j][l][k]]&(1<<s)){ |
f7e49eff3708
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|
222 |
codebook *stagebook=look->partbooks[partword[j][l][k]][s]; |
f7e49eff3708
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|
223 |
if(stagebook){ |
f7e49eff3708
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|
224 |
if(decodepart(stagebook,in[j]+offset,&vb->opb, |
f7e49eff3708
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|
225 |
samples_per_partition,-8)==-1)goto eopbreak; |
f7e49eff3708
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diff
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|
226 |
} |
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|
227 |
} |
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|
228 |
} |
f7e49eff3708
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|
229 |
} |
f7e49eff3708
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|
230 |
} |
f7e49eff3708
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|
231 |
} |
f7e49eff3708
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|
232 |
errout: |
f7e49eff3708
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|
233 |
eopbreak: |
f7e49eff3708
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|
234 |
return(0); |
f7e49eff3708
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|
235 |
} |
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|
236 |
|
f7e49eff3708
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|
237 |
int res0_inverse(vorbis_block *vb,vorbis_look_residue *vl, |
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|
238 |
ogg_int32_t **in,int *nonzero,int ch){ |
f7e49eff3708
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|
239 |
int i,used=0; |
f7e49eff3708
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|
240 |
for(i=0;i<ch;i++) |
f7e49eff3708
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|
241 |
if(nonzero[i]) |
f7e49eff3708
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|
242 |
in[used++]=in[i]; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
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parents:
diff
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243 |
if(used) |
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244 |
return(_01inverse(vb,vl,in,used,vorbis_book_decodevs_add)); |
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245 |
else |
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246 |
return(0); |
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247 |
} |
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248 |
|
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249 |
int res1_inverse(vorbis_block *vb,vorbis_look_residue *vl, |
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250 |
ogg_int32_t **in,int *nonzero,int ch){ |
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251 |
int i,used=0; |
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252 |
for(i=0;i<ch;i++) |
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253 |
if(nonzero[i]) |
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254 |
in[used++]=in[i]; |
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255 |
if(used) |
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256 |
return(_01inverse(vb,vl,in,used,vorbis_book_decodev_add)); |
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257 |
else |
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|
258 |
return(0); |
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|
259 |
} |
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|
260 |
|
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|
261 |
/* duplicate code here as speed is somewhat more important */ |
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262 |
int res2_inverse(vorbis_block *vb,vorbis_look_residue *vl, |
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263 |
ogg_int32_t **in,int *nonzero,int ch){ |
f7e49eff3708
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|
264 |
long i,k,l,s; |
f7e49eff3708
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265 |
vorbis_look_residue0 *look=(vorbis_look_residue0 *)vl; |
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266 |
vorbis_info_residue0 *info=look->info; |
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|
267 |
|
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268 |
/* move all this setup out later */ |
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269 |
int samples_per_partition=info->grouping; |
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270 |
int partitions_per_word=look->phrasebook->dim; |
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271 |
int max=(vb->pcmend*ch)>>1; |
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272 |
int end=(info->end<max?info->end:max); |
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273 |
int n=end-info->begin; |
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274 |
|
f7e49eff3708
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275 |
if(n>0){ |
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|
276 |
|
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277 |
int partvals=n/samples_per_partition; |
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278 |
int partwords=(partvals+partitions_per_word-1)/partitions_per_word; |
f7e49eff3708
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279 |
int **partword=(int **)_vorbis_block_alloc(vb,partwords*sizeof(*partword)); |
f7e49eff3708
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280 |
int beginoff=info->begin/ch; |
f7e49eff3708
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|
281 |
|
f7e49eff3708
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|
282 |
for(i=0;i<ch;i++)if(nonzero[i])break; |
f7e49eff3708
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|
283 |
if(i==ch)return(0); /* no nonzero vectors */ |
f7e49eff3708
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changeset
|
284 |
|
f7e49eff3708
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|
285 |
samples_per_partition/=ch; |
f7e49eff3708
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changeset
|
286 |
|
f7e49eff3708
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changeset
|
287 |
for(s=0;s<look->stages;s++){ |
f7e49eff3708
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parents:
diff
changeset
|
288 |
for(i=0,l=0;i<partvals;l++){ |
f7e49eff3708
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diff
changeset
|
289 |
|
f7e49eff3708
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changeset
|
290 |
if(s==0){ |
f7e49eff3708
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diff
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|
291 |
/* fetch the partition word */ |
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|
292 |
int temp=vorbis_book_decode(look->phrasebook,&vb->opb); |
f7e49eff3708
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|
293 |
if(temp==-1)goto eopbreak; |
f7e49eff3708
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parents:
diff
changeset
|
294 |
partword[l]=look->decodemap[temp]; |
f7e49eff3708
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|
295 |
if(partword[l]==NULL)goto errout; |
f7e49eff3708
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koda
parents:
diff
changeset
|
296 |
} |
f7e49eff3708
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parents:
diff
changeset
|
297 |
|
f7e49eff3708
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changeset
|
298 |
/* now we decode residual values for the partitions */ |
f7e49eff3708
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diff
changeset
|
299 |
for(k=0;k<partitions_per_word && i<partvals;k++,i++) |
f7e49eff3708
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diff
changeset
|
300 |
if(info->secondstages[partword[l][k]]&(1<<s)){ |
f7e49eff3708
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diff
changeset
|
301 |
codebook *stagebook=look->partbooks[partword[l][k]][s]; |
f7e49eff3708
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koda
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diff
changeset
|
302 |
|
f7e49eff3708
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diff
changeset
|
303 |
if(stagebook){ |
f7e49eff3708
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parents:
diff
changeset
|
304 |
if(vorbis_book_decodevv_add(stagebook,in, |
f7e49eff3708
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koda
parents:
diff
changeset
|
305 |
i*samples_per_partition+beginoff,ch, |
f7e49eff3708
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diff
changeset
|
306 |
&vb->opb, |
f7e49eff3708
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diff
changeset
|
307 |
samples_per_partition,-8)==-1) |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
308 |
goto eopbreak; |
f7e49eff3708
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koda
parents:
diff
changeset
|
309 |
} |
f7e49eff3708
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parents:
diff
changeset
|
310 |
} |
f7e49eff3708
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koda
parents:
diff
changeset
|
311 |
} |
f7e49eff3708
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parents:
diff
changeset
|
312 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
313 |
} |
f7e49eff3708
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diff
changeset
|
314 |
errout: |
f7e49eff3708
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koda
parents:
diff
changeset
|
315 |
eopbreak: |
f7e49eff3708
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koda
parents:
diff
changeset
|
316 |
return(0); |
f7e49eff3708
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koda
parents:
diff
changeset
|
317 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
318 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
319 |
|
f7e49eff3708
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diff
changeset
|
320 |
vorbis_func_residue residue0_exportbundle={ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
321 |
&res0_unpack, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
322 |
&res0_look, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
323 |
&res0_free_info, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
324 |
&res0_free_look, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
325 |
&res0_inverse |
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 |
vorbis_func_residue residue1_exportbundle={ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
329 |
&res0_unpack, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
330 |
&res0_look, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
331 |
&res0_free_info, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
332 |
&res0_free_look, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
333 |
&res1_inverse |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
334 |
}; |
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 |
vorbis_func_residue residue2_exportbundle={ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
337 |
&res0_unpack, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
338 |
&res0_look, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
339 |
&res0_free_info, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
340 |
&res0_free_look, |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
341 |
&res2_inverse |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
342 |
}; |