--- a/misc/libtremor/tremor/res012.c Tue Jul 16 11:14:27 2013 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,342 +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 max=vb->pcmend>>1;
- int end=(info->end<max?info->end:max);
- int n=end-info->begin;
-
- if(n>0){
- int partvals=n/samples_per_partition;
- int partwords=(partvals+partitions_per_word-1)/partitions_per_word;
- int ***partword=(int ***)alloca(ch*sizeof(*partword));
-
- for(j=0;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 max=(vb->pcmend*ch)>>1;
- int end=(info->end<max?info->end:max);
- int n=end-info->begin;
-
- if(n>0){
-
- int partvals=n/samples_per_partition;
- int partwords=(partvals+partitions_per_word-1)/partitions_per_word;
- int **partword=(int **)_vorbis_block_alloc(vb,partwords*sizeof(*partword));
- int beginoff=info->begin/ch;
-
- for(i=0;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
-};