* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
- * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2001 *
- * by the XIPHOPHORUS Company http://www.xiph.org/ *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007 *
+ * by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************
function: simple utility that runs audio through the psychoacoustics
without encoding
- last mod: $Id: psytune.c,v 1.18 2001/12/20 01:00:29 segher Exp $
********************************************************************/
+/* NB: this is dead code, retained purely for doc and reference value
+ don't try to compile it */
+
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "vorbis/codec.h"
#include "codec_internal.h"
#include "os.h"
+#include "misc.h"
#include "psy.h"
#include "mdct.h"
#include "smallft.h"
static vorbis_info_psy_global _psy_set0G={
0, /* decaydBpms */
8, /* lines per eighth octave */
-
+
/* thresh sample period, preecho clamp trigger threshhold, range, minenergy */
256, {26.f,26.f,26.f,30.f}, {-90.f,-90.f,-90.f,-90.f}, -90.f,
- -6.f,
-
+ -6.f,
+
0,
0.,
static vorbis_info_psy _psy_set0={
ATH_Bark_dB_lineaggressive,
-
+
-100.f,
-140.f,
6.f, /* floor master att */
.900f, 0.f, /*11500*/
.900f, 1.f, /*16000*/
},
-
+
95.f, /* even decade + 5 is important; saves an rint() later in a
tight loop) */
-44.,
};
static vorbis_info_floor1 _floor_set0={1,
- {0},
-
- {32},
- {0},
- {0},
- {{-1}},
-
- 2,
- {0,1024,
-
- 88,31,243,
-
- 14,54,143,460,
-
- 6,3,10, 22,18,26, 41,36,47,
- 69,61,78, 112,99,126, 185,162,211,
- 329,282,387, 672,553,825
- },
-
- 60,30,400,
- 20,8,1,18.,
- 20,600,
- 960};
+ {0},
+
+ {32},
+ {0},
+ {0},
+ {{-1}},
+
+ 2,
+ {0,1024,
+
+ 88,31,243,
+
+ 14,54,143,460,
+
+ 6,3,10, 22,18,26, 41,36,47,
+ 69,61,78, 112,99,126, 185,162,211,
+ 329,282,387, 672,553,825
+ },
+
+ 60,30,400,
+ 20,8,1,18.,
+ 20,600,
+ 960};
static vorbis_info_mapping0 mapping_info={1,{0,1},{0},{0},{0},0, 1, {0},{1}};
-static codec_setup_info codec_setup0={ {0,0},
- 1,1,1,1,1,0,1,
- {NULL},
- {0},{&mapping_info},
- {0},{NULL},
- {1},{&_floor_set0},
- {2},{NULL},
- {NULL},
- {&_psy_set0},
- &_psy_set0G};
-
+static codec_setup_info codec_setup0={ {0,0},
+ 1,1,1,1,1,0,1,
+ {NULL},
+ {0},{&mapping_info},
+ {0},{NULL},
+ {1},{&_floor_set0},
+ {2},{NULL},
+ {NULL},
+ {&_psy_set0},
+ &_psy_set0G};
+
static int noisy=0;
void analysis(char *base,int i,float *v,int n,int bark,int dB){
if(noisy){
for(j=0;j<n;j++){
if(dB && v[j]==0)
- fprintf(of,"\n\n");
+ fprintf(of,"\n\n");
else{
- if(bark)
- fprintf(of,"%g ",toBARK(22050.f*j/n));
- else
- fprintf(of,"%g ",(float)j);
-
- if(dB){
- fprintf(of,"%g\n",todB(v+j));
- }else{
- fprintf(of,"%g\n",v[j]);
- }
+ if(bark)
+ fprintf(of,"%g ",toBARK(22050.f*j/n));
+ else
+ fprintf(of,"%g ",(float)j);
+
+ if(dB){
+ fprintf(of,"%g\n",todB(v+j));
+ }else{
+ fprintf(of,"%g\n",v[j]);
+ }
}
}
fclose(of);
if(*argv[0]=='-'){
/* option */
if(argv[0][1]=='v'){
- noisy=0;
+ noisy=0;
}
}else
if(*argv[0]=='+'){
- /* option */
- if(argv[0][1]=='v'){
- noisy=1;
- }
+ /* option */
+ if(argv[0][1]=='v'){
+ noisy=1;
+ }
}else
- framesize=atoi(argv[0]);
+ framesize=atoi(argv[0]);
argv++;
}
-
+
vi.channels=2;
vi.codec_setup=&codec_setup0;
flr[1]=_ogg_calloc(framesize/2,sizeof(float));
buffer=_ogg_malloc(framesize*4);
buffer2=buffer+framesize*2;
- window=_vorbis_window(0,framesize,framesize/2,framesize/2);
+ window=_vorbis_window_create(0,framesize,framesize/2,framesize/2);
mdct_init(&m_look,framesize);
drft_init(&f_look,framesize);
_vp_psy_init(&p_look,&_psy_set0,&_psy_set0G,framesize/2,44100);
/* we cheat on the WAV header; we just bypass 44 bytes and never
verify that it matches 16bit/stereo/44.1kHz. */
-
+
fread(buffer,1,44,stdin);
fwrite(buffer,1,44,stdout);
memset(buffer,0,framesize*2);
fprintf(stderr,"Processing for frame size %d...\n",framesize);
while(!eos){
- long bytes=fread(buffer2,1,framesize*2,stdin);
+ long bytes=fread(buffer2,1,framesize*2,stdin);
if(bytes<framesize*2)
memset(buffer2+bytes,0,framesize*2-bytes);
-
+
if(bytes!=0){
int nonzero[2];
pcm[0][i]=((buffer[i*4+1]<<8)|
(0x00ff&(int)buffer[i*4]))/32768.f;
pcm[1][i]=((buffer[i*4+3]<<8)|
- (0x00ff&(int)buffer[i*4+2]))/32768.f;
+ (0x00ff&(int)buffer[i*4+2]))/32768.f;
}
-
+
{
- float secs=framesize/44100.;
-
- ampmax+=secs*ampmax_att_per_sec;
- if(ampmax<-9999)ampmax=-9999;
+ float secs=framesize/44100.;
+
+ ampmax+=secs*ampmax_att_per_sec;
+ if(ampmax<-9999)ampmax=-9999;
}
for(i=0;i<2;i++){
- float scale=4.f/framesize;
- float *fft=work[i];
- float *mdct=pcm[i];
- float *logmdct=mdct+framesize/2;
-
- analysis("pre",frameno+i,pcm[i],framesize,0,0);
-
- /* fft and mdct transforms */
- for(j=0;j<framesize;j++)
- fft[j]=pcm[i][j]*=window[j];
-
- drft_forward(&f_look,fft);
-
- local_ampmax[i]=-9999.f;
- fft[0]*=scale;
- fft[0]=todB(fft);
- for(j=1;j<framesize-1;j+=2){
- float temp=scale*FAST_HYPOT(fft[j],fft[j+1]);
- temp=fft[(j+1)>>1]=todB(&temp);
- if(temp>local_ampmax[i])local_ampmax[i]=temp;
- }
- if(local_ampmax[i]>ampmax)ampmax=local_ampmax[i];
-
- mdct_forward(&m_look,pcm[i],mdct);
- for(j=0;j<framesize/2;j++)
- logmdct[j]=todB(mdct+j);
-
- analysis("mdct",frameno+i,logmdct,framesize/2,1,0);
- analysis("fft",frameno+i,fft,framesize/2,1,0);
+ float scale=4.f/framesize;
+ float *fft=work[i];
+ float *mdct=pcm[i];
+ float *logmdct=mdct+framesize/2;
+
+ analysis("pre",frameno+i,pcm[i],framesize,0,0);
+
+ /* fft and mdct transforms */
+ for(j=0;j<framesize;j++)
+ fft[j]=pcm[i][j]*=window[j];
+
+ drft_forward(&f_look,fft);
+
+ local_ampmax[i]=-9999.f;
+ fft[0]*=scale;
+ fft[0]=todB(fft);
+ for(j=1;j<framesize-1;j+=2){
+ float temp=scale*FAST_HYPOT(fft[j],fft[j+1]);
+ temp=fft[(j+1)>>1]=todB(&temp);
+ if(temp>local_ampmax[i])local_ampmax[i]=temp;
+ }
+ if(local_ampmax[i]>ampmax)ampmax=local_ampmax[i];
+
+ mdct_forward(&m_look,pcm[i],mdct);
+ for(j=0;j<framesize/2;j++)
+ logmdct[j]=todB(mdct+j);
+
+ analysis("mdct",frameno+i,logmdct,framesize/2,1,0);
+ analysis("fft",frameno+i,fft,framesize/2,1,0);
}
for(i=0;i<2;i++){
- float amp;
- float *fft=work[i];
- float *logmax=fft;
- float *mdct=pcm[i];
- float *logmdct=mdct+framesize/2;
- float *mask=fft+framesize/2;
-
- /* floor psychoacoustics */
- _vp_compute_mask(&p_look,
- pg_look,
- i,
- fft,
- logmdct,
- mask,
- ampmax,
- local_ampmax[i],
- framesize/2);
-
- analysis("mask",frameno+i,mask,framesize/2,1,0);
-
- {
- vorbis_block vb;
- vorbis_dsp_state vd;
- memset(&vd,0,sizeof(vd));
- vd.vi=&vi;
- vb.vd=&vd;
- vb.pcmend=framesize;
-
- /* floor quantization/application */
- nonzero[i]=_floor_P[1]->forward(&vb,floor_look,
- mdct,
- logmdct,
- mask,
- logmax,
-
- flr[i]);
- }
-
- _vp_remove_floor(&p_look,
- pg_look,
- logmdct,
- mdct,
- flr[i],
- pcm[i],
- local_ampmax[i]);
-
- for(j=0;j<framesize/2;j++)
- if(fabs(pcm[i][j])>1500)
- fprintf(stderr,"%ld ",frameno+i);
-
- analysis("res",frameno+i,pcm[i],framesize/2,1,0);
- analysis("codedflr",frameno+i,flr[i],framesize/2,1,1);
+ float amp;
+ float *fft=work[i];
+ float *logmax=fft;
+ float *mdct=pcm[i];
+ float *logmdct=mdct+framesize/2;
+ float *mask=fft+framesize/2;
+
+ /* floor psychoacoustics */
+ _vp_compute_mask(&p_look,
+ pg_look,
+ i,
+ fft,
+ logmdct,
+ mask,
+ ampmax,
+ local_ampmax[i],
+ framesize/2);
+
+ analysis("mask",frameno+i,mask,framesize/2,1,0);
+
+ {
+ vorbis_block vb;
+ vorbis_dsp_state vd;
+ memset(&vd,0,sizeof(vd));
+ vd.vi=&vi;
+ vb.vd=&vd;
+ vb.pcmend=framesize;
+
+ /* floor quantization/application */
+ nonzero[i]=_floor_P[1]->forward(&vb,floor_look,
+ mdct,
+ logmdct,
+ mask,
+ logmax,
+
+ flr[i]);
+ }
+
+ _vp_remove_floor(&p_look,
+ pg_look,
+ logmdct,
+ mdct,
+ flr[i],
+ pcm[i],
+ local_ampmax[i]);
+
+ for(j=0;j<framesize/2;j++)
+ if(fabs(pcm[i][j])>1500)
+ fprintf(stderr,"%ld ",frameno+i);
+
+ analysis("res",frameno+i,pcm[i],framesize/2,1,0);
+ analysis("codedflr",frameno+i,flr[i],framesize/2,1,1);
}
/* residue prequantization */
_vp_partition_prequant(&p_look,
- &vi,
- pcm,
- nonzero);
-
+ &vi,
+ pcm,
+ nonzero);
+
for(i=0;i<2;i++)
- analysis("quant",frameno+i,pcm[i],framesize/2,1,0);
+ analysis("quant",frameno+i,pcm[i],framesize/2,1,0);
/* channel coupling / stereo quantization */
_vp_couple(&p_look,
- &mapping_info,
- pcm,
- nonzero);
-
+ &mapping_info,
+ pcm,
+ nonzero);
+
for(i=0;i<2;i++)
- analysis("coupled",frameno+i,pcm[i],framesize/2,1,0);
+ analysis("coupled",frameno+i,pcm[i],framesize/2,1,0);
/* decoupling */
for(i=mapping_info.coupling_steps-1;i>=0;i--){
- float *pcmM=pcm[mapping_info.coupling_mag[i]];
- float *pcmA=pcm[mapping_info.coupling_ang[i]];
-
- for(j=0;j<framesize/2;j++){
- float mag=pcmM[j];
- float 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;
- }
- }
+ float *pcmM=pcm[mapping_info.coupling_mag[i]];
+ float *pcmA=pcm[mapping_info.coupling_ang[i]];
+
+ for(j=0;j<framesize/2;j++){
+ float mag=pcmM[j];
+ float 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(i=0;i<2;i++)
- analysis("decoupled",frameno+i,pcm[i],framesize/2,1,0);
+ analysis("decoupled",frameno+i,pcm[i],framesize/2,1,0);
for(i=0;i<2;i++){
- float amp;
+ float amp;
- for(j=0;j<framesize/2;j++)
- pcm[i][j]*=flr[i][j];
+ for(j=0;j<framesize/2;j++)
+ pcm[i][j]*=flr[i][j];
- analysis("final",frameno+i,pcm[i],framesize/2,1,1);
+ analysis("final",frameno+i,pcm[i],framesize/2,1,1);
- /* take it back to time */
- mdct_backward(&m_look,pcm[i],pcm[i]);
+ /* take it back to time */
+ mdct_backward(&m_look,pcm[i],pcm[i]);
- for(j=0;j<framesize/2;j++)
- out[i][j]+=pcm[i][j]*window[j];
+ for(j=0;j<framesize/2;j++)
+ out[i][j]+=pcm[i][j]*window[j];
- analysis("out",frameno+i,out[i],framesize/2,0,0);
+ analysis("out",frameno+i,out[i],framesize/2,0,0);
}
-
+
/* write data. Use the part of buffer we're about to shift out */
for(i=0;i<2;i++){
- char *ptr=buffer+i*2;
- float *mono=out[i];
- int flag=0;
- for(j=0;j<framesize/2;j++){
- int val=mono[j]*32767.;
- /* might as well guard against clipping */
- if(val>32767){
- if(!flag)fprintf(stderr,"clipping in frame %ld ",frameno+i);
- flag=1;
- val=32767;
- }
- if(val<-32768){
- if(!flag)fprintf(stderr,"clipping in frame %ld ",frameno+i);
- flag=1;
- val=-32768;
- }
- ptr[0]=val&0xff;
- ptr[1]=(val>>8)&0xff;
- ptr+=4;
- }
+ char *ptr=buffer+i*2;
+ float *mono=out[i];
+ int flag=0;
+ for(j=0;j<framesize/2;j++){
+ int val=mono[j]*32767.;
+ /* might as well guard against clipping */
+ if(val>32767){
+ if(!flag)fprintf(stderr,"clipping in frame %ld ",frameno+i);
+ flag=1;
+ val=32767;
+ }
+ if(val<-32768){
+ if(!flag)fprintf(stderr,"clipping in frame %ld ",frameno+i);
+ flag=1;
+ val=-32768;
+ }
+ ptr[0]=val&0xff;
+ ptr[1]=(val>>8)&0xff;
+ ptr+=4;
+ }
}
-
+
fprintf(stderr,"*");
fwrite(buffer,1,framesize*2,stdout);
memmove(buffer,buffer2,framesize*2);
for(i=0;i<2;i++){
- for(j=0,k=framesize/2;j<framesize/2;j++,k++)
- out[i][j]=pcm[i][k]*window[k];
+ for(j=0,k=framesize/2;j<framesize/2;j++,k++)
+ out[i][j]=pcm[i][k]*window[k];
}
frameno+=2;
}else
}
fprintf(stderr,"average raw bits of entropy: %.03g/sample\n",acc/tot);
fprintf(stderr,"average nonzero samples: %.03g/%d\n",nonz/tot*framesize/2,
- framesize/2);
+ framesize/2);
fprintf(stderr,"Done\n\n");
return 0;
}
projects / platform / upstream / libvorbis.git / blobdiff