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-rw-r--r--Tremolo/mapping0.c241
1 files changed, 0 insertions, 241 deletions
diff --git a/Tremolo/mapping0.c b/Tremolo/mapping0.c
deleted file mode 100644
index f3e4c96..0000000
--- a/Tremolo/mapping0.c
+++ /dev/null
@@ -1,241 +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 1994-2003 *
- * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ *
- * *
- ********************************************************************
-
- function: channel mapping 0 implementation
-
- ********************************************************************/
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <math.h>
-#include "ogg.h"
-#include "os.h"
-#include "ivorbiscodec.h"
-#include "mdct.h"
-#include "codec_internal.h"
-#include "codebook.h"
-#include "misc.h"
-
-void mapping_clear_info(vorbis_info_mapping *info){
- if(info){
- if(info->chmuxlist)_ogg_free(info->chmuxlist);
- if(info->submaplist)_ogg_free(info->submaplist);
- if(info->coupling)_ogg_free(info->coupling);
- memset(info,0,sizeof(*info));
- }
-}
-
-static int ilog(unsigned int v){
- int ret=0;
- if(v)--v;
- while(v){
- ret++;
- v>>=1;
- }
- return(ret);
-}
-
-/* also responsible for range checking */
-int mapping_info_unpack(vorbis_info_mapping *info,vorbis_info *vi,
- oggpack_buffer *opb){
- int i;
- codec_setup_info *ci=(codec_setup_info *)vi->codec_setup;
- memset(info,0,sizeof(*info));
-
- if(oggpack_read(opb,1))
- info->submaps=oggpack_read(opb,4)+1;
- else
- info->submaps=1;
-
- if(oggpack_read(opb,1)){
- info->coupling_steps=oggpack_read(opb,8)+1;
- info->coupling=
- _ogg_malloc(info->coupling_steps*sizeof(*info->coupling));
-
- for(i=0;i<info->coupling_steps;i++){
- int testM=info->coupling[i].mag=(unsigned char)(oggpack_read(opb,ilog(vi->channels)));
- int testA=info->coupling[i].ang=(unsigned char)(oggpack_read(opb,ilog(vi->channels)));
-
- if(testM<0 ||
- testA<0 ||
- testM==testA ||
- testM>=vi->channels ||
- testA>=vi->channels) goto err_out;
- }
-
- }
-
- if(oggpack_read(opb,2)>0)goto err_out; /* 2,3:reserved */
-
- if(info->submaps>1){
- info->chmuxlist=_ogg_malloc(sizeof(*info->chmuxlist)*vi->channels);
- for(i=0;i<vi->channels;i++){
- info->chmuxlist[i]=(unsigned char)(oggpack_read(opb,4));
- if(info->chmuxlist[i]>=info->submaps)goto err_out;
- }
- }
-
- info->submaplist=_ogg_malloc(sizeof(*info->submaplist)*info->submaps);
- for(i=0;i<info->submaps;i++){
- int temp=oggpack_read(opb,8);
- info->submaplist[i].floor=(char)oggpack_read(opb,8);
- if(info->submaplist[i].floor>=ci->floors)goto err_out;
- info->submaplist[i].residue=(char)oggpack_read(opb,8);
- if(info->submaplist[i].residue>=ci->residues)goto err_out;
- }
-
- return 0;
-
- err_out:
- mapping_clear_info(info);
- return -1;
-}
-
-int mapping_inverse(vorbis_dsp_state *vd,vorbis_info_mapping *info){
- vorbis_info *vi=vd->vi;
- codec_setup_info *ci=(codec_setup_info *)vi->codec_setup;
-
- int i,j;
- long n=ci->blocksizes[vd->W];
-
- ogg_int32_t **pcmbundle=
- alloca(sizeof(*pcmbundle)*vi->channels);
- int *zerobundle=
- alloca(sizeof(*zerobundle)*vi->channels);
- int *nonzero=
- alloca(sizeof(*nonzero)*vi->channels);
- ogg_int32_t **floormemo=
- alloca(sizeof(*floormemo)*vi->channels);
-
- /* recover the spectral envelope; store it in the PCM vector for now */
- for(i=0;i<vi->channels;i++){
- int submap=0;
- int floorno;
-
- if(info->submaps>1)
- submap=info->chmuxlist[i];
- floorno=info->submaplist[submap].floor;
-
- if(ci->floor_type[floorno]){
- /* floor 1 */
- floormemo[i]=alloca(sizeof(*floormemo[i])*
- floor1_memosize(ci->floor_param[floorno]));
- floormemo[i]=floor1_inverse1(vd,ci->floor_param[floorno],floormemo[i]);
- }else{
- /* floor 0 */
- floormemo[i]=alloca(sizeof(*floormemo[i])*
- floor0_memosize(ci->floor_param[floorno]));
- floormemo[i]=floor0_inverse1(vd,ci->floor_param[floorno],floormemo[i]);
- }
-
- if(floormemo[i])
- nonzero[i]=1;
- else
- nonzero[i]=0;
- memset(vd->work[i],0,sizeof(*vd->work[i])*n/2);
- }
-
- /* channel coupling can 'dirty' the nonzero listing */
- for(i=0;i<info->coupling_steps;i++){
- if(nonzero[info->coupling[i].mag] ||
- nonzero[info->coupling[i].ang]){
- nonzero[info->coupling[i].mag]=1;
- nonzero[info->coupling[i].ang]=1;
- }
- }
-
- /* recover the residue into our working vectors */
- for(i=0;i<info->submaps;i++){
- int ch_in_bundle=0;
- for(j=0;j<vi->channels;j++){
- if(!info->chmuxlist || info->chmuxlist[j]==i){
- if(nonzero[j])
- zerobundle[ch_in_bundle]=1;
- else
- zerobundle[ch_in_bundle]=0;
- pcmbundle[ch_in_bundle++]=vd->work[j];
- }
- }
-
- res_inverse(vd,ci->residue_param+info->submaplist[i].residue,
- pcmbundle,zerobundle,ch_in_bundle);
- }
-
- //for(j=0;j<vi->channels;j++)
- //_analysis_output("coupled",seq+j,vb->pcm[j],-8,n/2,0,0);
-
- /* channel coupling */
- for(i=info->coupling_steps-1;i>=0;i--){
- ogg_int32_t *pcmM=vd->work[info->coupling[i].mag];
- ogg_int32_t *pcmA=vd->work[info->coupling[i].ang];
-
- for(j=0;j<n/2;j++){
- ogg_int32_t mag=pcmM[j];
- ogg_int32_t ang=pcmA[j];
-
- if(mag>0)
- if(ang>0){
- pcmM[j]=mag;
- pcmA[j]=mag-ang;
- }else{
- pcmA[j]=mag;
- pcmM[j]=mag+ang;
- }
- else
- if(ang>0){
- pcmM[j]=mag;
- pcmA[j]=mag+ang;
- }else{
- pcmA[j]=mag;
- pcmM[j]=mag-ang;
- }
- }
- }
-
- //for(j=0;j<vi->channels;j++)
- //_analysis_output("residue",seq+j,vb->pcm[j],-8,n/2,0,0);
-
- /* compute and apply spectral envelope */
- for(i=0;i<vi->channels;i++){
- ogg_int32_t *pcm=vd->work[i];
- int submap=0;
- int floorno;
-
- if(info->submaps>1)
- submap=info->chmuxlist[i];
- floorno=info->submaplist[submap].floor;
-
- if(ci->floor_type[floorno]){
- /* floor 1 */
- floor1_inverse2(vd,ci->floor_param[floorno],floormemo[i],pcm);
- }else{
- /* floor 0 */
- floor0_inverse2(vd,ci->floor_param[floorno],floormemo[i],pcm);
- }
- }
-
- //for(j=0;j<vi->channels;j++)
- //_analysis_output("mdct",seq+j,vb->pcm[j],-24,n/2,0,1);
-
- /* transform the PCM data; takes PCM vector, vb; modifies PCM vector */
- /* only MDCT right now.... */
- for(i=0;i<vi->channels;i++)
- mdct_backward(n,vd->work[i]);
-
- //for(j=0;j<vi->channels;j++)
- //_analysis_output("imdct",seq+j,vb->pcm[j],-24,n,0,0);
-
- /* all done! */
- return(0);
-}
generated by cgit v1.1 at 2024-04-29 16:27:01 +0000