diff options
Diffstat (limited to 'tremor/res012.c')
-rw-r--r-- | tremor/res012.c | 335 |
1 files changed, 0 insertions, 335 deletions
diff --git a/tremor/res012.c b/tremor/res012.c deleted file mode 100644 index e334d5672f..0000000000 --- a/tremor/res012.c +++ /dev/null @@ -1,335 +0,0 @@ -/******************************************************************** - * * - * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * - * * - * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * - * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * - * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * - * * - * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * - * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * - * * - ******************************************************************** - - function: residue backend 0, 1 and 2 implementation - - ********************************************************************/ - -#include <stdlib.h> -#include <string.h> -#include <math.h> -#include "ogg.h" -#include "ivorbiscodec.h" -#include "codec_internal.h" -#include "registry.h" -#include "codebook.h" -#include "misc.h" -#include "os.h" -#include "block.h" - -typedef struct { - vorbis_info_residue0 *info; - int map; - - int parts; - int stages; - codebook *fullbooks; - codebook *phrasebook; - codebook ***partbooks; - - int partvals; - int **decodemap; - -} vorbis_look_residue0; - -void res0_free_info(vorbis_info_residue *i){ - vorbis_info_residue0 *info=(vorbis_info_residue0 *)i; - if(info){ - memset(info,0,sizeof(*info)); - _ogg_free(info); - } -} - -void res0_free_look(vorbis_look_residue *i){ - int j; - if(i){ - - vorbis_look_residue0 *look=(vorbis_look_residue0 *)i; - - for(j=0;j<look->parts;j++) - if(look->partbooks[j])_ogg_free(look->partbooks[j]); - _ogg_free(look->partbooks); - for(j=0;j<look->partvals;j++) - _ogg_free(look->decodemap[j]); - _ogg_free(look->decodemap); - - memset(look,0,sizeof(*look)); - _ogg_free(look); - } -} - -static int ilog(unsigned int v){ - int ret=0; - while(v){ - ret++; - v>>=1; - } - return(ret); -} - -static int icount(unsigned int v){ - int ret=0; - while(v){ - ret+=v&1; - v>>=1; - } - return(ret); -} - -/* vorbis_info is for range checking */ -vorbis_info_residue *res0_unpack(vorbis_info *vi,oggpack_buffer *opb){ - int j,acc=0; - vorbis_info_residue0 *info=(vorbis_info_residue0 *)_ogg_calloc(1,sizeof(*info)); - codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; - - info->begin=oggpack_read(opb,24); - info->end=oggpack_read(opb,24); - info->grouping=oggpack_read(opb,24)+1; - info->partitions=oggpack_read(opb,6)+1; - info->groupbook=oggpack_read(opb,8); - - for(j=0;j<info->partitions;j++){ - int cascade=oggpack_read(opb,3); - if(oggpack_read(opb,1)) - cascade|=(oggpack_read(opb,5)<<3); - info->secondstages[j]=cascade; - - acc+=icount(cascade); - } - for(j=0;j<acc;j++) - info->booklist[j]=oggpack_read(opb,8); - - if(info->groupbook>=ci->books)goto errout; - for(j=0;j<acc;j++) - if(info->booklist[j]>=ci->books)goto errout; - - return(info); - errout: - res0_free_info(info); - return(NULL); -} - -vorbis_look_residue *res0_look(vorbis_dsp_state *vd,vorbis_info_mode *vm, - vorbis_info_residue *vr){ - vorbis_info_residue0 *info=(vorbis_info_residue0 *)vr; - vorbis_look_residue0 *look=(vorbis_look_residue0 *)_ogg_calloc(1,sizeof(*look)); - codec_setup_info *ci=(codec_setup_info *)vd->vi->codec_setup; - - int j,k,acc=0; - int dim; - int maxstage=0; - look->info=info; - look->map=vm->mapping; - - look->parts=info->partitions; - look->fullbooks=ci->fullbooks; - look->phrasebook=ci->fullbooks+info->groupbook; - dim=look->phrasebook->dim; - - look->partbooks=(codebook ***)_ogg_calloc(look->parts,sizeof(*look->partbooks)); - - for(j=0;j<look->parts;j++){ - int stages=ilog(info->secondstages[j]); - if(stages){ - if(stages>maxstage)maxstage=stages; - look->partbooks[j]=(codebook **)_ogg_calloc(stages,sizeof(*look->partbooks[j])); - for(k=0;k<stages;k++) - if(info->secondstages[j]&(1<<k)){ - look->partbooks[j][k]=ci->fullbooks+info->booklist[acc++]; -#ifdef TRAIN_RES - look->training_data[k][j]=calloc(look->partbooks[j][k]->entries, - sizeof(***look->training_data)); -#endif - } - } - } - - look->partvals=look->parts; - for(j=1;j<dim;j++)look->partvals*=look->parts; - look->stages=maxstage; - look->decodemap=(int **)_ogg_malloc(look->partvals*sizeof(*look->decodemap)); - for(j=0;j<look->partvals;j++){ - long val=j; - long mult=look->partvals/look->parts; - look->decodemap[j]=(int *)_ogg_malloc(dim*sizeof(*look->decodemap[j])); - for(k=0;k<dim;k++){ - long deco=val/mult; - val-=deco*mult; - mult/=look->parts; - look->decodemap[j][k]=deco; - } - } - - return(look); -} - - -/* a truncated packet here just means 'stop working'; it's not an error */ -static int _01inverse(vorbis_block *vb,vorbis_look_residue *vl, - ogg_int32_t **in,int ch, - long (*decodepart)(codebook *, ogg_int32_t *, - oggpack_buffer *,int,int)){ - - long i,j,k,l,s; - vorbis_look_residue0 *look=(vorbis_look_residue0 *)vl; - vorbis_info_residue0 *info=look->info; - - /* move all this setup out later */ - int samples_per_partition=info->grouping; - int partitions_per_word=look->phrasebook->dim; - int n=info->end-info->begin; - - int partvals=n/samples_per_partition; - int partwords=(partvals+partitions_per_word-1)/partitions_per_word; - int ***partword=(int ***)alloca(ch*sizeof(*partword)); - - for(j=0;j<ch;j++) - partword[j]=(int **)_vorbis_block_alloc(vb,partwords*sizeof(*partword[j])); - - for(s=0;s<look->stages;s++){ - - /* each loop decodes on partition codeword containing - partitions_pre_word partitions */ - for(i=0,l=0;i<partvals;l++){ - if(s==0){ - /* fetch the partition word for each channel */ - for(j=0;j<ch;j++){ - int temp=vorbis_book_decode(look->phrasebook,&vb->opb); - if(temp==-1)goto eopbreak; - partword[j][l]=look->decodemap[temp]; - if(partword[j][l]==NULL)goto errout; - } - } - - /* now we decode residual values for the partitions */ - for(k=0;k<partitions_per_word && i<partvals;k++,i++) - for(j=0;j<ch;j++){ - long offset=info->begin+i*samples_per_partition; - if(info->secondstages[partword[j][l][k]]&(1<<s)){ - codebook *stagebook=look->partbooks[partword[j][l][k]][s]; - if(stagebook){ - if(decodepart(stagebook,in[j]+offset,&vb->opb, - samples_per_partition,-8)==-1)goto eopbreak; - } - } - } - } - } - - errout: - eopbreak: - return(0); -} - -int res0_inverse(vorbis_block *vb,vorbis_look_residue *vl, - ogg_int32_t **in,int *nonzero,int ch){ - int i,used=0; - for(i=0;i<ch;i++) - if(nonzero[i]) - in[used++]=in[i]; - if(used) - return(_01inverse(vb,vl,in,used,vorbis_book_decodevs_add)); - else - return(0); -} - -int res1_inverse(vorbis_block *vb,vorbis_look_residue *vl, - ogg_int32_t **in,int *nonzero,int ch){ - int i,used=0; - for(i=0;i<ch;i++) - if(nonzero[i]) - in[used++]=in[i]; - if(used) - return(_01inverse(vb,vl,in,used,vorbis_book_decodev_add)); - else - return(0); -} - -/* duplicate code here as speed is somewhat more important */ -int res2_inverse(vorbis_block *vb,vorbis_look_residue *vl, - ogg_int32_t **in,int *nonzero,int ch){ - long i,k,l,s; - vorbis_look_residue0 *look=(vorbis_look_residue0 *)vl; - vorbis_info_residue0 *info=look->info; - - /* move all this setup out later */ - int samples_per_partition=info->grouping; - int partitions_per_word=look->phrasebook->dim; - int n=info->end-info->begin; - - int partvals=n/samples_per_partition; - int partwords=(partvals+partitions_per_word-1)/partitions_per_word; - int **partword=(int **)_vorbis_block_alloc(vb,partwords*sizeof(*partword)); - int beginoff=info->begin/ch; - - for(i=0;i<ch;i++)if(nonzero[i])break; - if(i==ch)return(0); /* no nonzero vectors */ - - samples_per_partition/=ch; - - for(s=0;s<look->stages;s++){ - for(i=0,l=0;i<partvals;l++){ - - if(s==0){ - /* fetch the partition word */ - int temp=vorbis_book_decode(look->phrasebook,&vb->opb); - if(temp==-1)goto eopbreak; - partword[l]=look->decodemap[temp]; - if(partword[l]==NULL)goto errout; - } - - /* now we decode residual values for the partitions */ - for(k=0;k<partitions_per_word && i<partvals;k++,i++) - if(info->secondstages[partword[l][k]]&(1<<s)){ - codebook *stagebook=look->partbooks[partword[l][k]][s]; - - if(stagebook){ - if(vorbis_book_decodevv_add(stagebook,in, - i*samples_per_partition+beginoff,ch, - &vb->opb, - samples_per_partition,-8)==-1) - goto eopbreak; - } - } - } - } - - errout: - eopbreak: - return(0); -} - - -vorbis_func_residue residue0_exportbundle={ - &res0_unpack, - &res0_look, - &res0_free_info, - &res0_free_look, - &res0_inverse -}; - -vorbis_func_residue residue1_exportbundle={ - &res0_unpack, - &res0_look, - &res0_free_info, - &res0_free_look, - &res1_inverse -}; - -vorbis_func_residue residue2_exportbundle={ - &res0_unpack, - &res0_look, - &res0_free_info, - &res0_free_look, - &res2_inverse -}; |