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Cary Sandvig 2000-10-11 22:19:42 +00:00
parent c90c20728e
commit e7f97dbcbd
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223
panda/src/mpg123/decode.c Normal file
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/*
* Mpeg Layer-1,2,3 audio decoder
* ------------------------------
* copyright (c) 1995,1996,1997 by Michael Hipp, All rights reserved.
* See also 'README'
*
*/
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include "mpg123.h"
#define WRITE_SAMPLE(samples,sum,clip) \
if( (sum) > 32767.0) { *(samples) = 0x7fff; (clip)++; } \
else if( (sum) < -32768.0) { *(samples) = -0x8000; (clip)++; } \
else { *(samples) = sum; }
int synth_1to1_8bit(real *bandPtr,int channel,unsigned char *samples,int *pnt)
{
short samples_tmp[64];
short *tmp1 = samples_tmp + channel;
int i,ret;
int pnt1=0;
ret = synth_1to1(bandPtr,channel,(unsigned char *) samples_tmp,&pnt1);
samples += channel + *pnt;
for(i=0;i<32;i++) {
*samples = conv16to8[*tmp1>>AUSHIFT];
samples += 2;
tmp1 += 2;
}
*pnt += 64;
return ret;
}
int synth_1to1_8bit_mono(real *bandPtr,unsigned char *samples,int *pnt)
{
short samples_tmp[64];
short *tmp1 = samples_tmp;
int i,ret;
int pnt1 = 0;
ret = synth_1to1(bandPtr,0,(unsigned char *) samples_tmp,&pnt1);
samples += *pnt;
for(i=0;i<32;i++) {
*samples++ = conv16to8[*tmp1>>AUSHIFT];
tmp1 += 2;
}
*pnt += 32;
return ret;
}
int synth_1to1_8bit_mono2stereo(real *bandPtr,unsigned char *samples,int *pnt)
{
short samples_tmp[64];
short *tmp1 = samples_tmp;
int i,ret;
int pnt1 = 0;
ret = synth_1to1(bandPtr,0,(unsigned char *) samples_tmp,&pnt1);
samples += *pnt;
for(i=0;i<32;i++) {
*samples++ = conv16to8[*tmp1>>AUSHIFT];
*samples++ = conv16to8[*tmp1>>AUSHIFT];
tmp1 += 2;
}
*pnt += 64;
return ret;
}
int synth_1to1_mono(real *bandPtr,unsigned char *samples,int *pnt)
{
short samples_tmp[64];
short *tmp1 = samples_tmp;
int i,ret;
int pnt1 = 0;
ret = synth_1to1(bandPtr,0,(unsigned char *) samples_tmp,&pnt1);
samples += *pnt;
for(i=0;i<32;i++) {
*( (short *)samples) = *tmp1;
samples += 2;
tmp1 += 2;
}
*pnt += 64;
return ret;
}
int synth_1to1_mono2stereo(real *bandPtr,unsigned char *samples,int *pnt)
{
int i,ret;
ret = synth_1to1(bandPtr,0,samples,pnt);
samples = samples + *pnt - 128;
for(i=0;i<32;i++) {
((short *)samples)[1] = ((short *)samples)[0];
samples+=4;
}
return ret;
}
int synth_1to1(real *bandPtr,int channel,unsigned char *out,int *pnt)
{
static real buffs[2][2][0x110];
static const int step = 2;
static int bo = 1;
short *samples = (short *) (out+*pnt);
real *b0,(*buf)[0x110];
int clip = 0;
int bo1;
if(param.enable_equalizer)
do_equalizer(bandPtr,channel);
if(!channel) {
bo--;
bo &= 0xf;
buf = buffs[0];
}
else {
samples++;
buf = buffs[1];
}
if(bo & 0x1) {
b0 = buf[0];
bo1 = bo;
dct64(buf[1]+((bo+1)&0xf),buf[0]+bo,bandPtr);
}
else {
b0 = buf[1];
bo1 = bo+1;
dct64(buf[0]+bo,buf[1]+bo+1,bandPtr);
}
{
register int j;
real *window = decwin + 16 - bo1;
for (j=16;j;j--,window+=0x10,samples+=step)
{
real sum;
sum = *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
WRITE_SAMPLE(samples,sum,clip);
}
{
real sum;
sum = window[0x0] * b0[0x0];
sum += window[0x2] * b0[0x2];
sum += window[0x4] * b0[0x4];
sum += window[0x6] * b0[0x6];
sum += window[0x8] * b0[0x8];
sum += window[0xA] * b0[0xA];
sum += window[0xC] * b0[0xC];
sum += window[0xE] * b0[0xE];
WRITE_SAMPLE(samples,sum,clip);
b0-=0x10,window-=0x20,samples+=step;
}
window += bo1<<1;
for (j=15;j;j--,b0-=0x20,window-=0x10,samples+=step)
{
real sum;
sum = -*(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
WRITE_SAMPLE(samples,sum,clip);
}
}
*pnt += 128;
return clip;
}

231
panda/src/mpg123/decode_2to1.c Normal file
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/*
* Mpeg Layer-1,2,3 audio decoder
* ------------------------------
* copyright (c) 1995 by Michael Hipp, All rights reserved. See also 'README'
* version for slower machines .. decodes only every second sample
* sounds like 24000,22050 or 16000 kHz .. (depending on original sample freq.)
*
*/
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include "mpg123.h"
#define WRITE_SAMPLE(samples,sum,clip) \
if( (sum) > 32767.0) { *(samples) = 0x7fff; (clip)++; } \
else if( (sum) < -32768.0) { *(samples) = -0x8000; (clip)++; } \
else { *(samples) = sum; }
int synth_2to1_8bit(real *bandPtr,int channel,unsigned char *samples,int *pnt)
{
short samples_tmp[32];
short *tmp1 = samples_tmp + channel;
int i,ret;
int pnt1 = 0;
ret = synth_2to1(bandPtr,channel,(unsigned char *) samples_tmp,&pnt1);
samples += channel + *pnt;
for(i=0;i<16;i++) {
*samples = conv16to8[*tmp1>>AUSHIFT];
samples += 2;
tmp1 += 2;
}
*pnt += 32;
return ret;
}
int synth_2to1_8bit_mono(real *bandPtr,unsigned char *samples,int *pnt)
{
short samples_tmp[32];
short *tmp1 = samples_tmp;
int i,ret;
int pnt1 = 0;
ret = synth_2to1(bandPtr,0,(unsigned char *) samples_tmp,&pnt1);
samples += *pnt;
for(i=0;i<16;i++) {
*samples++ = conv16to8[*tmp1>>AUSHIFT];
tmp1 += 2;
}
*pnt += 16;
return ret;
}
int synth_2to1_8bit_mono2stereo(real *bandPtr,unsigned char *samples,int *pnt)
{
short samples_tmp[32];
short *tmp1 = samples_tmp;
int i,ret;
int pnt1 = 0;
ret = synth_2to1(bandPtr,0,(unsigned char *) samples_tmp,&pnt1);
samples += *pnt;
for(i=0;i<16;i++) {
*samples++ = conv16to8[*tmp1>>AUSHIFT];
*samples++ = conv16to8[*tmp1>>AUSHIFT];
tmp1 += 2;
}
*pnt += 32;
return ret;
}
int synth_2to1_mono(real *bandPtr,unsigned char *samples,int *pnt)
{
short samples_tmp[32];
short *tmp1 = samples_tmp;
int i,ret;
int pnt1=0;
ret = synth_2to1(bandPtr,0,(unsigned char *) samples_tmp,&pnt1);
samples += *pnt;
for(i=0;i<16;i++) {
*( (short *) samples) = *tmp1;
samples += 2;
tmp1 += 2;
}
*pnt += 32;
return ret;
}
int synth_2to1_mono2stereo(real *bandPtr,unsigned char *samples,int *pnt)
{
int i,ret;
ret = synth_2to1(bandPtr,0,samples,pnt);
samples = samples + *pnt - 64;
for(i=0;i<16;i++) {
((short *)samples)[1] = ((short *)samples)[0];
samples+=4;
}
return ret;
}
int synth_2to1(real *bandPtr,int channel,unsigned char *out,int *pnt)
{
static real buffs[2][2][0x110];
static const int step = 2;
static int bo = 1;
short *samples = (short *) (out + *pnt);
real *b0,(*buf)[0x110];
int clip = 0;
int bo1;
if(param.enable_equalizer)
do_equalizer(bandPtr,channel);
if(!channel) {
bo--;
bo &= 0xf;
buf = buffs[0];
}
else {
samples++;
buf = buffs[1];
}
if(bo & 0x1) {
b0 = buf[0];
bo1 = bo;
dct64(buf[1]+((bo+1)&0xf),buf[0]+bo,bandPtr);
}
else {
b0 = buf[1];
bo1 = bo+1;
dct64(buf[0]+bo,buf[1]+bo+1,bandPtr);
}
{
register int j;
real *window = decwin + 16 - bo1;
for (j=8;j;j--,b0+=0x10,window+=0x30)
{
real sum;
sum = *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
WRITE_SAMPLE(samples,sum,clip); samples += step;
#if 0
WRITE_SAMPLE(samples,sum,clip); samples += step;
#endif
}
{
real sum;
sum = window[0x0] * b0[0x0];
sum += window[0x2] * b0[0x2];
sum += window[0x4] * b0[0x4];
sum += window[0x6] * b0[0x6];
sum += window[0x8] * b0[0x8];
sum += window[0xA] * b0[0xA];
sum += window[0xC] * b0[0xC];
sum += window[0xE] * b0[0xE];
WRITE_SAMPLE(samples,sum,clip); samples += step;
#if 0
WRITE_SAMPLE(samples,sum,clip); samples += step;
#endif
b0-=0x20,window-=0x40;
}
window += bo1<<1;
for (j=7;j;j--,b0-=0x30,window-=0x30)
{
real sum;
sum = -*(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
WRITE_SAMPLE(samples,sum,clip); samples += step;
#if 0
WRITE_SAMPLE(samples,sum,clip); samples += step;
#endif
}
}
*pnt += 64;
return clip;
}

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panda/src/mpg123/decode_4to1.c Normal file
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/*
* Mpeg Layer-1,2,3 audio decoder
* ------------------------------
* copyright (c) 1995,1996,1997 by Michael Hipp, All rights reserved.
* See also 'README'
* version for slower machines .. decodes only every fourth sample
* dunno why it sounds THIS annoying (maybe we should adapt the window?)
* absolutely not optimized for this operation
*/
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include "mpg123.h"
#define WRITE_SAMPLE(samples,sum,clip) \
if( (sum) > 32767.0) { *(samples) = 0x7fff; (clip)++; } \
else if( (sum) < -32768.0) { *(samples) = -0x8000; (clip)++; } \
else { *(samples) = sum; }
int synth_4to1_8bit(real *bandPtr,int channel,unsigned char *samples,int *pnt)
{
short samples_tmp[16];
short *tmp1 = samples_tmp + channel;
int i,ret;
int pnt1 = 0;
ret = synth_4to1(bandPtr,channel,(unsigned char *) samples_tmp,&pnt1);
samples += channel + *pnt;
for(i=0;i<8;i++) {
*samples = conv16to8[*tmp1>>AUSHIFT];
samples += 2;
tmp1 += 2;
}
*pnt += 16;
return ret;
}
int synth_4to1_8bit_mono(real *bandPtr,unsigned char *samples,int *pnt)
{
short samples_tmp[16];
short *tmp1 = samples_tmp;
int i,ret;
int pnt1 = 0;
ret = synth_4to1(bandPtr,0,(unsigned char *) samples_tmp,&pnt1);
samples += *pnt;
for(i=0;i<8;i++) {
*samples++ = conv16to8[*tmp1>>AUSHIFT];
tmp1 += 2;
}
*pnt += 8;
return ret;
}
int synth_4to1_8bit_mono2stereo(real *bandPtr,unsigned char *samples,int *pnt)
{
short samples_tmp[16];
short *tmp1 = samples_tmp;
int i,ret;
int pnt1 = 0;
ret = synth_4to1(bandPtr,0,(unsigned char *) samples_tmp,&pnt1);
samples += *pnt;
for(i=0;i<8;i++) {
*samples++ = conv16to8[*tmp1>>AUSHIFT];
*samples++ = conv16to8[*tmp1>>AUSHIFT];
tmp1 += 2;
}
*pnt += 16;
return ret;
}
int synth_4to1_mono(real *bandPtr,unsigned char *samples,int *pnt)
{
short samples_tmp[16];
short *tmp1 = samples_tmp;
int i,ret;
int pnt1 = 0;
ret = synth_4to1(bandPtr,0,(unsigned char *) samples_tmp,&pnt1);
samples += *pnt;
for(i=0;i<8;i++) {
*( (short *)samples) = *tmp1;
samples += 2;
tmp1 += 2;
}
*pnt += 16;
return ret;
}
int synth_4to1_mono2stereo(real *bandPtr,unsigned char *samples,int *pnt)
{
int i,ret;
ret = synth_4to1(bandPtr,0,samples,pnt);
samples = samples + *pnt - 32;
for(i=0;i<8;i++) {
((short *)samples)[1] = ((short *)samples)[0];
samples+=4;
}
return ret;
}
int synth_4to1(real *bandPtr,int channel,unsigned char *out,int *pnt)
{
static real buffs[2][2][0x110];
static const int step = 2;
static int bo = 1;
short *samples = (short *) (out + *pnt);
real *b0,(*buf)[0x110];
int clip = 0;
int bo1;
if(param.enable_equalizer)
do_equalizer(bandPtr,channel);
if(!channel) {
bo--;
bo &= 0xf;
buf = buffs[0];
}
else {
samples++;
buf = buffs[1];
}
if(bo & 0x1) {
b0 = buf[0];
bo1 = bo;
dct64(buf[1]+((bo+1)&0xf),buf[0]+bo,bandPtr);
}
else {
b0 = buf[1];
bo1 = bo+1;
dct64(buf[0]+bo,buf[1]+bo+1,bandPtr);
}
{
register int j;
real *window = decwin + 16 - bo1;
for (j=4;j;j--,b0+=0x30,window+=0x70)
{
real sum;
sum = *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
WRITE_SAMPLE(samples,sum,clip); samples += step;
#if 0
WRITE_SAMPLE(samples,sum,clip); samples += step;
WRITE_SAMPLE(samples,sum,clip); samples += step;
WRITE_SAMPLE(samples,sum,clip); samples += step;
#endif
}
{
real sum;
sum = window[0x0] * b0[0x0];
sum += window[0x2] * b0[0x2];
sum += window[0x4] * b0[0x4];
sum += window[0x6] * b0[0x6];
sum += window[0x8] * b0[0x8];
sum += window[0xA] * b0[0xA];
sum += window[0xC] * b0[0xC];
sum += window[0xE] * b0[0xE];
WRITE_SAMPLE(samples,sum,clip); samples += step;
#if 0
WRITE_SAMPLE(samples,sum,clip); samples += step;
WRITE_SAMPLE(samples,sum,clip); samples += step;
WRITE_SAMPLE(samples,sum,clip); samples += step;
#endif
b0-=0x40,window-=0x80;
}
window += bo1<<1;
for (j=3;j;j--,b0-=0x50,window-=0x70)
{
real sum;
sum = -*(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
WRITE_SAMPLE(samples,sum,clip); samples += step;
#if 0
WRITE_SAMPLE(samples,sum,clip); samples += step;
WRITE_SAMPLE(samples,sum,clip); samples += step;
WRITE_SAMPLE(samples,sum,clip); samples += step;
#endif
}
}
*pnt += 32;
return clip;
}

288
panda/src/mpg123/decode_ntom.c Normal file
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/*
* Mpeg Layer-1,2,3 audio decoder
* ------------------------------
* copyright (c) 1995,1996,1997 by Michael Hipp, All rights reserved.
* See also 'README'
*
* N->M down/up sampling. Not optimized for speed.
*/
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include "mpg123.h"
#define WRITE_SAMPLE(samples,sum,clip) \
if( (sum) > 32767.0) { *(samples) = 0x7fff; (clip)++; } \
else if( (sum) < -32768.0) { *(samples) = -0x8000; (clip)++; } \
else { *(samples) = sum; }
#define NTOM_MUL (32768)
static unsigned long ntom_val[2] = { NTOM_MUL>>1,NTOM_MUL>>1 };
static unsigned long ntom_step = NTOM_MUL;
void synth_ntom_set_step(long m,long n)
{
if(param.verbose > 1)
fprintf(stderr,"Init rate converter: %ld->%ld\n",m,n);
if(n >= 96000 || m >= 96000 || m == 0 || n == 0) {
fprintf(stderr,"NtoM converter: illegal rates\n");
exit(1);
}
n *= NTOM_MUL;
ntom_step = n / m;
if(ntom_step > 8*NTOM_MUL) {
fprintf(stderr,"max. 1:8 conversion allowed!\n");
exit(1);
}
ntom_val[0] = ntom_val[1] = NTOM_MUL>>1;
}
int synth_ntom_8bit(real *bandPtr,int channel,unsigned char *samples,int *pnt)
{
short samples_tmp[8*64];
short *tmp1 = samples_tmp + channel;
int i,ret;
int pnt1 = 0;
ret = synth_ntom(bandPtr,channel,(unsigned char *) samples_tmp,&pnt1);
samples += channel + *pnt;
for(i=0;i<(pnt1>>2);i++) {
*samples = conv16to8[*tmp1>>AUSHIFT];
samples += 2;
tmp1 += 2;
}
*pnt += pnt1>>1;
return ret;
}
int synth_ntom_8bit_mono(real *bandPtr,unsigned char *samples,int *pnt)
{
short samples_tmp[8*64];
short *tmp1 = samples_tmp;
int i,ret;
int pnt1 = 0;
ret = synth_ntom(bandPtr,0,(unsigned char *) samples_tmp,&pnt1);
samples += *pnt;
for(i=0;i<(pnt1>>2);i++) {
*samples++ = conv16to8[*tmp1>>AUSHIFT];
tmp1 += 2;
}
*pnt += pnt1 >> 2;
return ret;
}
int synth_ntom_8bit_mono2stereo(real *bandPtr,unsigned char *samples,int *pnt)
{
short samples_tmp[8*64];
short *tmp1 = samples_tmp;
int i,ret;
int pnt1 = 0;
ret = synth_ntom(bandPtr,0,(unsigned char *) samples_tmp,&pnt1);
samples += *pnt;
for(i=0;i<(pnt1>>2);i++) {
*samples++ = conv16to8[*tmp1>>AUSHIFT];
*samples++ = conv16to8[*tmp1>>AUSHIFT];
tmp1 += 2;
}
*pnt += pnt1 >> 1;
return ret;
}
int synth_ntom_mono(real *bandPtr,unsigned char *samples,int *pnt)
{
short samples_tmp[8*64];
short *tmp1 = samples_tmp;
int i,ret;
int pnt1 = 0;
ret = synth_ntom(bandPtr,0,(unsigned char *) samples_tmp,&pnt1);
samples += *pnt;
for(i=0;i<(pnt1>>2);i++) {
*( (short *)samples) = *tmp1;
samples += 2;
tmp1 += 2;
}
*pnt += pnt1 >> 1;
return ret;
}
int synth_ntom_mono2stereo(real *bandPtr,unsigned char *samples,int *pnt)
{
int i,ret;
int pnt1 = *pnt;
ret = synth_ntom(bandPtr,0,samples,pnt);
samples += pnt1;
for(i=0;i<((*pnt-pnt1)>>2);i++) {
((short *)samples)[1] = ((short *)samples)[0];
samples+=4;
}
return ret;
}
int synth_ntom(real *bandPtr,int channel,unsigned char *out,int *pnt)
{
static real buffs[2][2][0x110];
static const int step = 2;
static int bo = 1;
short *samples = (short *) (out + *pnt);
real *b0,(*buf)[0x110];
int clip = 0;
int bo1;
int ntom;
if(param.enable_equalizer)
do_equalizer(bandPtr,channel);
if(!channel) {
bo--;
bo &= 0xf;
buf = buffs[0];
ntom = ntom_val[1] = ntom_val[0];
}
else {
samples++;
out += 2; /* to compute the right *pnt value */
buf = buffs[1];
ntom = ntom_val[1];
}
if(bo & 0x1) {
b0 = buf[0];
bo1 = bo;
dct64(buf[1]+((bo+1)&0xf),buf[0]+bo,bandPtr);
}
else {
b0 = buf[1];
bo1 = bo+1;
dct64(buf[0]+bo,buf[1]+bo+1,bandPtr);
}
{
register int j;
real *window = decwin + 16 - bo1;
for (j=16;j;j--,window+=0x10)
{
real sum;
ntom += ntom_step;
if(ntom < NTOM_MUL) {
window += 16;
b0 += 16;
continue;
}
sum = *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
sum += *window++ * *b0++;
sum -= *window++ * *b0++;
while(ntom >= NTOM_MUL) {
WRITE_SAMPLE(samples,sum,clip);
samples += step;
ntom -= NTOM_MUL;
}
}
ntom += ntom_step;
if(ntom >= NTOM_MUL)
{
real sum;
sum = window[0x0] * b0[0x0];
sum += window[0x2] * b0[0x2];
sum += window[0x4] * b0[0x4];
sum += window[0x6] * b0[0x6];
sum += window[0x8] * b0[0x8];
sum += window[0xA] * b0[0xA];
sum += window[0xC] * b0[0xC];
sum += window[0xE] * b0[0xE];
while(ntom >= NTOM_MUL) {
WRITE_SAMPLE(samples,sum,clip);
samples += step;
ntom -= NTOM_MUL;
}
}
b0-=0x10,window-=0x20;
window += bo1<<1;
for (j=15;j;j--,b0-=0x20,window-=0x10)
{
real sum;
ntom += ntom_step;
if(ntom < NTOM_MUL) {
window -= 16;
b0 += 16;
continue;
}
sum = -*(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
sum -= *(--window) * *b0++;
while(ntom >= NTOM_MUL) {
WRITE_SAMPLE(samples,sum,clip);
samples += step;
ntom -= NTOM_MUL;
}
}
}
ntom_val[channel] = ntom;
*pnt = ((unsigned char *) samples - out);
return clip;
}

332
panda/src/mpg123/huffman.h Normal file
View File

@ -0,0 +1,332 @@
/*
* huffman tables ... recalcualted to work with my optimzed
* decoder scheme (MH)
*
* probably we could save a few bytes of memory, because the
* smaller tables are often the part of a bigger table
*/
struct newhuff
{
unsigned int linbits;
short *table;
};
static short tab0[] =
{
0
};
static short tab1[] =
{
-5, -3, -1, 17, 1, 16, 0
};
static short tab2[] =
{
-15, -11, -9, -5, -3, -1, 34, 2, 18, -1, 33, 32, 17, -1, 1,
16, 0
};
static short tab3[] =
{
-13, -11, -9, -5, -3, -1, 34, 2, 18, -1, 33, 32, 16, 17, -1,
1, 0
};
static short tab5[] =
{
-29, -25, -23, -15, -7, -5, -3, -1, 51, 35, 50, 49, -3, -1, 19,
3, -1, 48, 34, -3, -1, 18, 33, -1, 2, 32, 17, -1, 1, 16,
0
};
static short tab6[] =
{
-25, -19, -13, -9, -5, -3, -1, 51, 3, 35, -1, 50, 48, -1, 19,
49, -3, -1, 34, 2, 18, -3, -1, 33, 32, 1, -1, 17, -1, 16,
0
};
static short tab7[] =
{
-69, -65, -57, -39, -29, -17, -11, -7, -3, -1, 85, 69, -1, 84, 83,
-1, 53, 68, -3, -1, 37, 82, 21, -5, -1, 81, -1, 5, 52, -1,
80, -1, 67, 51, -5, -3, -1, 36, 66, 20, -1, 65, 64, -11, -7,
-3, -1, 4, 35, -1, 50, 3, -1, 19, 49, -3, -1, 48, 34, 18,
-5, -1, 33, -1, 2, 32, 17, -1, 1, 16, 0
};
static short tab8[] =
{
-65, -63, -59, -45, -31, -19, -13, -7, -5, -3, -1, 85, 84, 69, 83,
-3, -1, 53, 68, 37, -3, -1, 82, 5, 21, -5, -1, 81, -1, 52,
67, -3, -1, 80, 51, 36, -5, -3, -1, 66, 20, 65, -3, -1, 4,
64, -1, 35, 50, -9, -7, -3, -1, 19, 49, -1, 3, 48, 34, -1,
2, 32, -1, 18, 33, 17, -3, -1, 1, 16, 0
};
static short tab9[] =
{
-63, -53, -41, -29, -19, -11, -5, -3, -1, 85, 69, 53, -1, 83, -1,
84, 5, -3, -1, 68, 37, -1, 82, 21, -3, -1, 81, 52, -1, 67,
-1, 80, 4, -7, -3, -1, 36, 66, -1, 51, 64, -1, 20, 65, -5,
-3, -1, 35, 50, 19, -1, 49, -1, 3, 48, -5, -3, -1, 34, 2,
18, -1, 33, 32, -3, -1, 17, 1, -1, 16, 0
};
static short tab10[] =
{
-125,-121,-111, -83, -55, -35, -21, -13, -7, -3, -1, 119, 103, -1, 118,
87, -3, -1, 117, 102, 71, -3, -1, 116, 86, -1, 101, 55, -9, -3,
-1, 115, 70, -3, -1, 85, 84, 99, -1, 39, 114, -11, -5, -3, -1,
100, 7, 112, -1, 98, -1, 69, 53, -5, -1, 6, -1, 83, 68, 23,
-17, -5, -1, 113, -1, 54, 38, -5, -3, -1, 37, 82, 21, -1, 81,
-1, 52, 67, -3, -1, 22, 97, -1, 96, -1, 5, 80, -19, -11, -7,
-3, -1, 36, 66, -1, 51, 4, -1, 20, 65, -3, -1, 64, 35, -1,
50, 3, -3, -1, 19, 49, -1, 48, 34, -7, -3, -1, 18, 33, -1,
2, 32, 17, -1, 1, 16, 0
};
static short tab11[] =
{
-121,-113, -89, -59, -43, -27, -17, -7, -3, -1, 119, 103, -1, 118, 117,
-3, -1, 102, 71, -1, 116, -1, 87, 85, -5, -3, -1, 86, 101, 55,
-1, 115, 70, -9, -7, -3, -1, 69, 84, -1, 53, 83, 39, -1, 114,
-1, 100, 7, -5, -1, 113, -1, 23, 112, -3, -1, 54, 99, -1, 96,
-1, 68, 37, -13, -7, -5, -3, -1, 82, 5, 21, 98, -3, -1, 38,
6, 22, -5, -1, 97, -1, 81, 52, -5, -1, 80, -1, 67, 51, -1,
36, 66, -15, -11, -7, -3, -1, 20, 65, -1, 4, 64, -1, 35, 50,
-1, 19, 49, -5, -3, -1, 3, 48, 34, 33, -5, -1, 18, -1, 2,
32, 17, -3, -1, 1, 16, 0
};
static short tab12[] =
{
-115, -99, -73, -45, -27, -17, -9, -5, -3, -1, 119, 103, 118, -1, 87,
117, -3, -1, 102, 71, -1, 116, 101, -3, -1, 86, 55, -3, -1, 115,
85, 39, -7, -3, -1, 114, 70, -1, 100, 23, -5, -1, 113, -1, 7,
112, -1, 54, 99, -13, -9, -3, -1, 69, 84, -1, 68, -1, 6, 5,
-1, 38, 98, -5, -1, 97, -1, 22, 96, -3, -1, 53, 83, -1, 37,
82, -17, -7, -3, -1, 21, 81, -1, 52, 67, -5, -3, -1, 80, 4,
36, -1, 66, 20, -3, -1, 51, 65, -1, 35, 50, -11, -7, -5, -3,
-1, 64, 3, 48, 19, -1, 49, 34, -1, 18, 33, -7, -5, -3, -1,
2, 32, 0, 17, -1, 1, 16
};
static short tab13[] =
{
-509,-503,-475,-405,-333,-265,-205,-153,-115, -83, -53, -35, -21, -13, -9,
-7, -5, -3, -1, 254, 252, 253, 237, 255, -1, 239, 223, -3, -1, 238,
207, -1, 222, 191, -9, -3, -1, 251, 206, -1, 220, -1, 175, 233, -1,
236, 221, -9, -5, -3, -1, 250, 205, 190, -1, 235, 159, -3, -1, 249,
234, -1, 189, 219, -17, -9, -3, -1, 143, 248, -1, 204, -1, 174, 158,
-5, -1, 142, -1, 127, 126, 247, -5, -1, 218, -1, 173, 188, -3, -1,
203, 246, 111, -15, -7, -3, -1, 232, 95, -1, 157, 217, -3, -1, 245,
231, -1, 172, 187, -9, -3, -1, 79, 244, -3, -1, 202, 230, 243, -1,
63, -1, 141, 216, -21, -9, -3, -1, 47, 242, -3, -1, 110, 156, 15,
-5, -3, -1, 201, 94, 171, -3, -1, 125, 215, 78, -11, -5, -3, -1,
200, 214, 62, -1, 185, -1, 155, 170, -1, 31, 241, -23, -13, -5, -1,
240, -1, 186, 229, -3, -1, 228, 140, -1, 109, 227, -5, -1, 226, -1,
46, 14, -1, 30, 225, -15, -7, -3, -1, 224, 93, -1, 213, 124, -3,
-1, 199, 77, -1, 139, 184, -7, -3, -1, 212, 154, -1, 169, 108, -1,
198, 61, -37, -21, -9, -5, -3, -1, 211, 123, 45, -1, 210, 29, -5,
-1, 183, -1, 92, 197, -3, -1, 153, 122, 195, -7, -5, -3, -1, 167,
151, 75, 209, -3, -1, 13, 208, -1, 138, 168, -11, -7, -3, -1, 76,
196, -1, 107, 182, -1, 60, 44, -3, -1, 194, 91, -3, -1, 181, 137,
28, -43, -23, -11, -5, -1, 193, -1, 152, 12, -1, 192, -1, 180, 106,
-5, -3, -1, 166, 121, 59, -1, 179, -1, 136, 90, -11, -5, -1, 43,
-1, 165, 105, -1, 164, -1, 120, 135, -5, -1, 148, -1, 119, 118, 178,
-11, -3, -1, 27, 177, -3, -1, 11, 176, -1, 150, 74, -7, -3, -1,
58, 163, -1, 89, 149, -1, 42, 162, -47, -23, -9, -3, -1, 26, 161,
-3, -1, 10, 104, 160, -5, -3, -1, 134, 73, 147, -3, -1, 57, 88,
-1, 133, 103, -9, -3, -1, 41, 146, -3, -1, 87, 117, 56, -5, -1,
131, -1, 102, 71, -3, -1, 116, 86, -1, 101, 115, -11, -3, -1, 25,
145, -3, -1, 9, 144, -1, 72, 132, -7, -5, -1, 114, -1, 70, 100,
40, -1, 130, 24, -41, -27, -11, -5, -3, -1, 55, 39, 23, -1, 113,
-1, 85, 7, -7, -3, -1, 112, 54, -1, 99, 69, -3, -1, 84, 38,
-1, 98, 53, -5, -1, 129, -1, 8, 128, -3, -1, 22, 97, -1, 6,
96, -13, -9, -5, -3, -1, 83, 68, 37, -1, 82, 5, -1, 21, 81,
-7, -3, -1, 52, 67, -1, 80, 36, -3, -1, 66, 51, 20, -19, -11,
-5, -1, 65, -1, 4, 64, -3, -1, 35, 50, 19, -3, -1, 49, 3,
-1, 48, 34, -3, -1, 18, 33, -1, 2, 32, -3, -1, 17, 1, 16,
0
};
static short tab15[] =
{
-495,-445,-355,-263,-183,-115, -77, -43, -27, -13, -7, -3, -1, 255, 239,
-1, 254, 223, -1, 238, -1, 253, 207, -7, -3, -1, 252, 222, -1, 237,
191, -1, 251, -1, 206, 236, -7, -3, -1, 221, 175, -1, 250, 190, -3,
-1, 235, 205, -1, 220, 159, -15, -7, -3, -1, 249, 234, -1, 189, 219,
-3, -1, 143, 248, -1, 204, 158, -7, -3, -1, 233, 127, -1, 247, 173,
-3, -1, 218, 188, -1, 111, -1, 174, 15, -19, -11, -3, -1, 203, 246,
-3, -1, 142, 232, -1, 95, 157, -3, -1, 245, 126, -1, 231, 172, -9,
-3, -1, 202, 187, -3, -1, 217, 141, 79, -3, -1, 244, 63, -1, 243,
216, -33, -17, -9, -3, -1, 230, 47, -1, 242, -1, 110, 240, -3, -1,
31, 241, -1, 156, 201, -7, -3, -1, 94, 171, -1, 186, 229, -3, -1,
125, 215, -1, 78, 228, -15, -7, -3, -1, 140, 200, -1, 62, 109, -3,
-1, 214, 227, -1, 155, 185, -7, -3, -1, 46, 170, -1, 226, 30, -5,
-1, 225, -1, 14, 224, -1, 93, 213, -45, -25, -13, -7, -3, -1, 124,
199, -1, 77, 139, -1, 212, -1, 184, 154, -7, -3, -1, 169, 108, -1,
198, 61, -1, 211, 210, -9, -5, -3, -1, 45, 13, 29, -1, 123, 183,
-5, -1, 209, -1, 92, 208, -1, 197, 138, -17, -7, -3, -1, 168, 76,
-1, 196, 107, -5, -1, 182, -1, 153, 12, -1, 60, 195, -9, -3, -1,
122, 167, -1, 166, -1, 192, 11, -1, 194, -1, 44, 91, -55, -29, -15,
-7, -3, -1, 181, 28, -1, 137, 152, -3, -1, 193, 75, -1, 180, 106,
-5, -3, -1, 59, 121, 179, -3, -1, 151, 136, -1, 43, 90, -11, -5,
-1, 178, -1, 165, 27, -1, 177, -1, 176, 105, -7, -3, -1, 150, 74,
-1, 164, 120, -3, -1, 135, 58, 163, -17, -7, -3, -1, 89, 149, -1,
42, 162, -3, -1, 26, 161, -3, -1, 10, 160, 104, -7, -3, -1, 134,
73, -1, 148, 57, -5, -1, 147, -1, 119, 9, -1, 88, 133, -53, -29,
-13, -7, -3, -1, 41, 103, -1, 118, 146, -1, 145, -1, 25, 144, -7,
-3, -1, 72, 132, -1, 87, 117, -3, -1, 56, 131, -1, 102, 71, -7,
-3, -1, 40, 130, -1, 24, 129, -7, -3, -1, 116, 8, -1, 128, 86,
-3, -1, 101, 55, -1, 115, 70, -17, -7, -3, -1, 39, 114, -1, 100,
23, -3, -1, 85, 113, -3, -1, 7, 112, 54, -7, -3, -1, 99, 69,
-1, 84, 38, -3, -1, 98, 22, -3, -1, 6, 96, 53, -33, -19, -9,
-5, -1, 97, -1, 83, 68, -1, 37, 82, -3, -1, 21, 81, -3, -1,
5, 80, 52, -7, -3, -1, 67, 36, -1, 66, 51, -1, 65, -1, 20,
4, -9, -3, -1, 35, 50, -3, -1, 64, 3, 19, -3, -1, 49, 48,
34, -9, -7, -3, -1, 18, 33, -1, 2, 32, 17, -3, -1, 1, 16,
0
};
static short tab16[] =
{
-509,-503,-461,-323,-103, -37, -27, -15, -7, -3, -1, 239, 254, -1, 223,
253, -3, -1, 207, 252, -1, 191, 251, -5, -1, 175, -1, 250, 159, -3,
-1, 249, 248, 143, -7, -3, -1, 127, 247, -1, 111, 246, 255, -9, -5,
-3, -1, 95, 245, 79, -1, 244, 243, -53, -1, 240, -1, 63, -29, -19,
-13, -7, -5, -1, 206, -1, 236, 221, 222, -1, 233, -1, 234, 217, -1,
238, -1, 237, 235, -3, -1, 190, 205, -3, -1, 220, 219, 174, -11, -5,
-1, 204, -1, 173, 218, -3, -1, 126, 172, 202, -5, -3, -1, 201, 125,
94, 189, 242, -93, -5, -3, -1, 47, 15, 31, -1, 241, -49, -25, -13,
-5, -1, 158, -1, 188, 203, -3, -1, 142, 232, -1, 157, 231, -7, -3,
-1, 187, 141, -1, 216, 110, -1, 230, 156, -13, -7, -3, -1, 171, 186,
-1, 229, 215, -1, 78, -1, 228, 140, -3, -1, 200, 62, -1, 109, -1,
214, 155, -19, -11, -5, -3, -1, 185, 170, 225, -1, 212, -1, 184, 169,
-5, -1, 123, -1, 183, 208, 227, -7, -3, -1, 14, 224, -1, 93, 213,
-3, -1, 124, 199, -1, 77, 139, -75, -45, -27, -13, -7, -3, -1, 154,
108, -1, 198, 61, -3, -1, 92, 197, 13, -7, -3, -1, 138, 168, -1,
153, 76, -3, -1, 182, 122, 60, -11, -5, -3, -1, 91, 137, 28, -1,
192, -1, 152, 121, -1, 226, -1, 46, 30, -15, -7, -3, -1, 211, 45,
-1, 210, 209, -5, -1, 59, -1, 151, 136, 29, -7, -3, -1, 196, 107,
-1, 195, 167, -1, 44, -1, 194, 181, -23, -13, -7, -3, -1, 193, 12,
-1, 75, 180, -3, -1, 106, 166, 179, -5, -3, -1, 90, 165, 43, -1,
178, 27, -13, -5, -1, 177, -1, 11, 176, -3, -1, 105, 150, -1, 74,
164, -5, -3, -1, 120, 135, 163, -3, -1, 58, 89, 42, -97, -57, -33,
-19, -11, -5, -3, -1, 149, 104, 161, -3, -1, 134, 119, 148, -5, -3,
-1, 73, 87, 103, 162, -5, -1, 26, -1, 10, 160, -3, -1, 57, 147,
-1, 88, 133, -9, -3, -1, 41, 146, -3, -1, 118, 9, 25, -5, -1,
145, -1, 144, 72, -3, -1, 132, 117, -1, 56, 131, -21, -11, -5, -3,
-1, 102, 40, 130, -3, -1, 71, 116, 24, -3, -1, 129, 128, -3, -1,
8, 86, 55, -9, -5, -1, 115, -1, 101, 70, -1, 39, 114, -5, -3,
-1, 100, 85, 7, 23, -23, -13, -5, -1, 113, -1, 112, 54, -3, -1,
99, 69, -1, 84, 38, -3, -1, 98, 22, -1, 97, -1, 6, 96, -9,
-5, -1, 83, -1, 53, 68, -1, 37, 82, -1, 81, -1, 21, 5, -33,
-23, -13, -7, -3, -1, 52, 67, -1, 80, 36, -3, -1, 66, 51, 20,
-5, -1, 65, -1, 4, 64, -1, 35, 50, -3, -1, 19, 49, -3, -1,
3, 48, 34, -3, -1, 18, 33, -1, 2, 32, -3, -1, 17, 1, 16,
0
};
static short tab24[] =
{
-451,-117, -43, -25, -15, -7, -3, -1, 239, 254, -1, 223, 253, -3, -1,
207, 252, -1, 191, 251, -5, -1, 250, -1, 175, 159, -1, 249, 248, -9,
-5, -3, -1, 143, 127, 247, -1, 111, 246, -3, -1, 95, 245, -1, 79,
244, -71, -7, -3, -1, 63, 243, -1, 47, 242, -5, -1, 241, -1, 31,
240, -25, -9, -1, 15, -3, -1, 238, 222, -1, 237, 206, -7, -3, -1,
236, 221, -1, 190, 235, -3, -1, 205, 220, -1, 174, 234, -15, -7, -3,
-1, 189, 219, -1, 204, 158, -3, -1, 233, 173, -1, 218, 188, -7, -3,
-1, 203, 142, -1, 232, 157, -3, -1, 217, 126, -1, 231, 172, 255,-235,
-143, -77, -45, -25, -15, -7, -3, -1, 202, 187, -1, 141, 216, -5, -3,
-1, 14, 224, 13, 230, -5, -3, -1, 110, 156, 201, -1, 94, 186, -9,
-5, -1, 229, -1, 171, 125, -1, 215, 228, -3, -1, 140, 200, -3, -1,
78, 46, 62, -15, -7, -3, -1, 109, 214, -1, 227, 155, -3, -1, 185,
170, -1, 226, 30, -7, -3, -1, 225, 93, -1, 213, 124, -3, -1, 199,
77, -1, 139, 184, -31, -15, -7, -3, -1, 212, 154, -1, 169, 108, -3,
-1, 198, 61, -1, 211, 45, -7, -3, -1, 210, 29, -1, 123, 183, -3,
-1, 209, 92, -1, 197, 138, -17, -7, -3, -1, 168, 153, -1, 76, 196,
-3, -1, 107, 182, -3, -1, 208, 12, 60, -7, -3, -1, 195, 122, -1,
167, 44, -3, -1, 194, 91, -1, 181, 28, -57, -35, -19, -7, -3, -1,
137, 152, -1, 193, 75, -5, -3, -1, 192, 11, 59, -3, -1, 176, 10,
26, -5, -1, 180, -1, 106, 166, -3, -1, 121, 151, -3, -1, 160, 9,
144, -9, -3, -1, 179, 136, -3, -1, 43, 90, 178, -7, -3, -1, 165,
27, -1, 177, 105, -1, 150, 164, -17, -9, -5, -3, -1, 74, 120, 135,
-1, 58, 163, -3, -1, 89, 149, -1, 42, 162, -7, -3, -1, 161, 104,
-1, 134, 119, -3, -1, 73, 148, -1, 57, 147, -63, -31, -15, -7, -3,
-1, 88, 133, -1, 41, 103, -3, -1, 118, 146, -1, 25, 145, -7, -3,
-1, 72, 132, -1, 87, 117, -3, -1, 56, 131, -1, 102, 40, -17, -7,
-3, -1, 130, 24, -1, 71, 116, -5, -1, 129, -1, 8, 128, -1, 86,
101, -7, -5, -1, 23, -1, 7, 112, 115, -3, -1, 55, 39, 114, -15,
-7, -3, -1, 70, 100, -1, 85, 113, -3, -1, 54, 99, -1, 69, 84,
-7, -3, -1, 38, 98, -1, 22, 97, -5, -3, -1, 6, 96, 53, -1,
83, 68, -51, -37, -23, -15, -9, -3, -1, 37, 82, -1, 21, -1, 5,
80, -1, 81, -1, 52, 67, -3, -1, 36, 66, -1, 51, 20, -9, -5,
-1, 65, -1, 4, 64, -1, 35, 50, -1, 19, 49, -7, -5, -3, -1,
3, 48, 34, 18, -1, 33, -1, 2, 32, -3, -1, 17, 1, -1, 16,
0
};
static short tab_c0[] =
{
-29, -21, -13, -7, -3, -1, 11, 15, -1, 13, 14, -3, -1, 7, 5,
9, -3, -1, 6, 3, -1, 10, 12, -3, -1, 2, 1, -1, 4, 8,
0
};
static short tab_c1[] =
{
-15, -7, -3, -1, 15, 14, -1, 13, 12, -3, -1, 11, 10, -1, 9,
8, -7, -3, -1, 7, 6, -1, 5, 4, -3, -1, 3, 2, -1, 1,
0
};
static struct newhuff ht[] =
{
{ /* 0 */ 0 , tab0 } ,
{ /* 2 */ 0 , tab1 } ,
{ /* 3 */ 0 , tab2 } ,
{ /* 3 */ 0 , tab3 } ,
{ /* 0 */ 0 , tab0 } ,
{ /* 4 */ 0 , tab5 } ,
{ /* 4 */ 0 , tab6 } ,
{ /* 6 */ 0 , tab7 } ,
{ /* 6 */ 0 , tab8 } ,
{ /* 6 */ 0 , tab9 } ,
{ /* 8 */ 0 , tab10 } ,
{ /* 8 */ 0 , tab11 } ,
{ /* 8 */ 0 , tab12 } ,
{ /* 16 */ 0 , tab13 } ,
{ /* 0 */ 0 , tab0 } ,
{ /* 16 */ 0 , tab15 } ,
{ /* 16 */ 1 , tab16 } ,
{ /* 16 */ 2 , tab16 } ,
{ /* 16 */ 3 , tab16 } ,
{ /* 16 */ 4 , tab16 } ,
{ /* 16 */ 6 , tab16 } ,
{ /* 16 */ 8 , tab16 } ,
{ /* 16 */ 10, tab16 } ,
{ /* 16 */ 13, tab16 } ,
{ /* 16 */ 4 , tab24 } ,
{ /* 16 */ 5 , tab24 } ,
{ /* 16 */ 6 , tab24 } ,
{ /* 16 */ 7 , tab24 } ,
{ /* 16 */ 8 , tab24 } ,
{ /* 16 */ 9 , tab24 } ,
{ /* 16 */ 11, tab24 } ,
{ /* 16 */ 13, tab24 }
};
static struct newhuff htc[] =
{
{ /* 1 , 1 , */ 0 , tab_c0 } ,
{ /* 1 , 1 , */ 0 , tab_c1 }
};

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/*
* Layer 2 Alloc tables ..
* most other tables are calculated on program start (which is (of course)
* not ISO-conform) ..
* Layer-3 huffman table is in huffman.h
*/
struct al_table alloc_0[] = {
{4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511},
{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767},
{4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511},
{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767},
{4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511},
{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{2,0},{5,3},{7,5},{16,-32767},
{2,0},{5,3},{7,5},{16,-32767},
{2,0},{5,3},{7,5},{16,-32767},
{2,0},{5,3},{7,5},{16,-32767} };
struct al_table alloc_1[] = {
{4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511},
{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767},
{4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511},
{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767},
{4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511},
{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
{2,0},{5,3},{7,5},{16,-32767},
{2,0},{5,3},{7,5},{16,-32767},
{2,0},{5,3},{7,5},{16,-32767},
{2,0},{5,3},{7,5},{16,-32767},
{2,0},{5,3},{7,5},{16,-32767},
{2,0},{5,3},{7,5},{16,-32767},
{2,0},{5,3},{7,5},{16,-32767} };
struct al_table alloc_2[] = {
{4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},
{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},
{4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},
{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63} };
struct al_table alloc_3[] = {
{4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},
{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},
{4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},
{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63} };
struct al_table alloc_4[] = {
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9},
{2,0},{5,3},{7,5},{10,9} };

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/*
* Mpeg Layer-1 audio decoder
* --------------------------
* copyright (c) 1995 by Michael Hipp, All rights reserved. See also 'README'
* near unoptimzed ...
*
* may have a few bugs after last optimization ...
*
*/
#include "mpg123.h"
#include "getbits.h"
void I_step_one(unsigned int balloc[], unsigned int scale_index[2][SBLIMIT],struct frame *fr)
{
unsigned int *ba=balloc;
unsigned int *sca = (unsigned int *) scale_index;
if(fr->stereo) {
int i;
int jsbound = fr->jsbound;
for (i=0;i<jsbound;i++) {
*ba++ = getbits(4);
*ba++ = getbits(4);
}
for (i=jsbound;i<SBLIMIT;i++)
*ba++ = getbits(4);
ba = balloc;
for (i=0;i<jsbound;i++) {
if ((*ba++))
*sca++ = getbits(6);
if ((*ba++))
*sca++ = getbits(6);
}
for (i=jsbound;i<SBLIMIT;i++)
if ((*ba++)) {
*sca++ = getbits(6);
*sca++ = getbits(6);
}
}
else {
int i;
for (i=0;i<SBLIMIT;i++)
*ba++ = getbits(4);
ba = balloc;
for (i=0;i<SBLIMIT;i++)
if ((*ba++))
*sca++ = getbits(6);
}
}
void I_step_two(real fraction[2][SBLIMIT],unsigned int balloc[2*SBLIMIT],
unsigned int scale_index[2][SBLIMIT],struct frame *fr)
{
int i,n;
int smpb[2*SBLIMIT]; /* values: 0-65535 */
int *sample;
register unsigned int *ba;
register unsigned int *sca = (unsigned int *) scale_index;
if(fr->stereo) {
int jsbound = fr->jsbound;
register real *f0 = fraction[0];
register real *f1 = fraction[1];
ba = balloc;
for (sample=smpb,i=0;i<jsbound;i++) {
if ((n = *ba++))
*sample++ = getbits(n+1);
if ((n = *ba++))
*sample++ = getbits(n+1);
}
for (i=jsbound;i<SBLIMIT;i++)
if ((n = *ba++))
*sample++ = getbits(n+1);
ba = balloc;
for (sample=smpb,i=0;i<jsbound;i++) {
if((n=*ba++))
*f0++ = (real) ( ((-1)<<n) + (*sample++) + 1) * muls[n+1][*sca++];
else
*f0++ = 0.0;
if((n=*ba++))
*f1++ = (real) ( ((-1)<<n) + (*sample++) + 1) * muls[n+1][*sca++];
else
*f1++ = 0.0;
}
for (i=jsbound;i<SBLIMIT;i++) {
if ((n=*ba++)) {
real samp = ( ((-1)<<n) + (*sample++) + 1);
*f0++ = samp * muls[n+1][*sca++];
*f1++ = samp * muls[n+1][*sca++];
}
else
*f0++ = *f1++ = 0.0;
}
for(i=fr->down_sample_sblimit;i<32;i++)
fraction[0][i] = fraction[1][i] = 0.0;
}
else {
register real *f0 = fraction[0];
ba = balloc;
for (sample=smpb,i=0;i<SBLIMIT;i++)
if ((n = *ba++))
*sample++ = getbits(n+1);
ba = balloc;
for (sample=smpb,i=0;i<SBLIMIT;i++) {
if((n=*ba++))
*f0++ = (real) ( ((-1)<<n) + (*sample++) + 1) * muls[n+1][*sca++];
else
*f0++ = 0.0;
}
for(i=fr->down_sample_sblimit;i<32;i++)
fraction[0][i] = 0.0;
}
}
int do_layer1(struct mpstr *mp,struct frame *fr,int outmode,struct audio_info_struct *ai)
{
int clip=0;
int i,stereo = fr->stereo;
unsigned int balloc[2*SBLIMIT];
unsigned int scale_index[2][SBLIMIT];
real fraction[2][SBLIMIT];
int single = fr->single;
fr->jsbound = (fr->mode == MPG_MD_JOINT_STEREO) ? (fr->mode_ext<<2)+4 : 32;
if(stereo == 1 || single == 3)
single = 0;
I_step_one(balloc,scale_index,fr);
for (i=0;i<SCALE_BLOCK;i++)
{
I_step_two(fraction,balloc,scale_index,fr);
if(single >= 0)
{
clip += (fr->synth_mono)( (real *) fraction[single],pcm_sample,&pcm_point);
}
else {
int p1 = pcm_point;
clip += (fr->synth)( (real *) fraction[0],0,pcm_sample,&p1);
clip += (fr->synth)( (real *) fraction[1],1,pcm_sample,&pcm_point);
}
if(pcm_point >= audiobufsize)
audio_flush(outmode,ai);
}
return clip;
}

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/*
* Mpeg Layer-2 audio decoder
* --------------------------
* copyright (c) 1995 by Michael Hipp, All rights reserved. See also 'README'
*
*/
#include "mpg123.h"
#include "l2tables.h"
#include "getbits.h"
static int grp_3tab[32 * 3] = { 0, }; /* used: 27 */
static int grp_5tab[128 * 3] = { 0, }; /* used: 125 */
static int grp_9tab[1024 * 3] = { 0, }; /* used: 729 */
real muls[27][64]; /* also used by layer 1 */
void init_layer2(void)
{
static double mulmul[27] = {
0.0 , -2.0/3.0 , 2.0/3.0 ,
2.0/7.0 , 2.0/15.0 , 2.0/31.0, 2.0/63.0 , 2.0/127.0 , 2.0/255.0 ,
2.0/511.0 , 2.0/1023.0 , 2.0/2047.0 , 2.0/4095.0 , 2.0/8191.0 ,
2.0/16383.0 , 2.0/32767.0 , 2.0/65535.0 ,
-4.0/5.0 , -2.0/5.0 , 2.0/5.0, 4.0/5.0 ,
-8.0/9.0 , -4.0/9.0 , -2.0/9.0 , 2.0/9.0 , 4.0/9.0 , 8.0/9.0 };
static int base[3][9] = {
{ 1 , 0, 2 , } ,
{ 17, 18, 0 , 19, 20 , } ,
{ 21, 1, 22, 23, 0, 24, 25, 2, 26 } };
int i,j,k,l,len;
real *table;
static int tablen[3] = { 3 , 5 , 9 };
static int *itable,*tables[3] = { grp_3tab , grp_5tab , grp_9tab };
for(i=0;i<3;i++)
{
itable = tables[i];
len = tablen[i];
for(j=0;j<len;j++)
for(k=0;k<len;k++)
for(l=0;l<len;l++)
{
*itable++ = base[i][l];
*itable++ = base[i][k];
*itable++ = base[i][j];
}
}
for(k=0;k<27;k++)
{
double m=mulmul[k];
table = muls[k];
#ifdef USE_MMX
if(!param.down_sample)
for(j=3,i=0;i<63;i++,j--)
*table++ = 16384 * m * pow(2.0,(double) j / 3.0);
else
#endif
for(j=3,i=0;i<63;i++,j--)
*table++ = m * pow(2.0,(double) j / 3.0);
*table++ = 0.0;
}
}
void II_step_one(unsigned int *bit_alloc,int *scale,struct frame *fr)
{
int stereo = fr->stereo-1;
int sblimit = fr->II_sblimit;
int jsbound = fr->jsbound;
int sblimit2 = fr->II_sblimit<<stereo;
struct al_table *alloc1 = fr->alloc;
int i;
static unsigned int scfsi_buf[64];
unsigned int *scfsi,*bita;
int sc,step;
bita = bit_alloc;
if(stereo)
{
for (i=jsbound;i;i--,alloc1+=(1<<step))
{
*bita++ = (char) getbits(step=alloc1->bits);
*bita++ = (char) getbits(step);
}
for (i=sblimit-jsbound;i;i--,alloc1+=(1<<step))
{
bita[0] = (char) getbits(step=alloc1->bits);
bita[1] = bita[0];
bita+=2;
}
bita = bit_alloc;
scfsi=scfsi_buf;
for (i=sblimit2;i;i--)
if (*bita++)
*scfsi++ = (char) getbits_fast(2);
}
else /* mono */
{
for (i=sblimit;i;i--,alloc1+=(1<<step))
*bita++ = (char) getbits(step=alloc1->bits);
bita = bit_alloc;
scfsi=scfsi_buf;
for (i=sblimit;i;i--)
if (*bita++)
*scfsi++ = (char) getbits_fast(2);
}
bita = bit_alloc;
scfsi=scfsi_buf;
for (i=sblimit2;i;i--)
if (*bita++)
switch (*scfsi++)
{
case 0:
*scale++ = getbits_fast(6);
*scale++ = getbits_fast(6);
*scale++ = getbits_fast(6);
break;
case 1 :
*scale++ = sc = getbits_fast(6);
*scale++ = sc;
*scale++ = getbits_fast(6);
break;
case 2:
*scale++ = sc = getbits_fast(6);
*scale++ = sc;
*scale++ = sc;
break;
default: /* case 3 */
*scale++ = getbits_fast(6);
*scale++ = sc = getbits_fast(6);
*scale++ = sc;
break;
}
}
void II_step_two(unsigned int *bit_alloc,real fraction[2][4][SBLIMIT],int *scale,struct frame *fr,int x1)
{
int i,j,k,ba;
int stereo = fr->stereo;
int sblimit = fr->II_sblimit;
int jsbound = fr->jsbound;
struct al_table *alloc2,*alloc1 = fr->alloc;
unsigned int *bita=bit_alloc;
int d1,step;
for (i=0;i<jsbound;i++,alloc1+=(1<<step))
{
step = alloc1->bits;
for (j=0;j<stereo;j++)
{
if ( (ba=*bita++) )
{
k=(alloc2 = alloc1+ba)->bits;
if( (d1=alloc2->d) < 0)
{
real cm=muls[k][scale[x1]];
fraction[j][0][i] = ((real) ((int)getbits(k) + d1)) * cm;
fraction[j][1][i] = ((real) ((int)getbits(k) + d1)) * cm;
fraction[j][2][i] = ((real) ((int)getbits(k) + d1)) * cm;
}
else
{
static int *table[] = { 0,0,0,grp_3tab,0,grp_5tab,0,0,0,grp_9tab };
unsigned int idx,*tab,m=scale[x1];
idx = (unsigned int) getbits(k);
tab = (unsigned int *) (table[d1] + idx + idx + idx);
fraction[j][0][i] = muls[*tab++][m];
fraction[j][1][i] = muls[*tab++][m];
fraction[j][2][i] = muls[*tab][m];
}
scale+=3;
}
else
fraction[j][0][i] = fraction[j][1][i] = fraction[j][2][i] = 0.0;
}
}
for (i=jsbound;i<sblimit;i++,alloc1+=(1<<step))
{
step = alloc1->bits;
bita++; /* channel 1 and channel 2 bitalloc are the same */
if ( (ba=*bita++) )
{
k=(alloc2 = alloc1+ba)->bits;
if( (d1=alloc2->d) < 0)
{
real cm;
cm=muls[k][scale[x1+3]];
fraction[1][0][i] = (fraction[0][0][i] = (real) ((int)getbits(k) + d1) ) * cm;
fraction[1][1][i] = (fraction[0][1][i] = (real) ((int)getbits(k) + d1) ) * cm;
fraction[1][2][i] = (fraction[0][2][i] = (real) ((int)getbits(k) + d1) ) * cm;
cm=muls[k][scale[x1]];
fraction[0][0][i] *= cm; fraction[0][1][i] *= cm; fraction[0][2][i] *= cm;
}
else
{
static int *table[] = { 0,0,0,grp_3tab,0,grp_5tab,0,0,0,grp_9tab };
unsigned int idx,*tab,m1,m2;
m1 = scale[x1]; m2 = scale[x1+3];
idx = (unsigned int) getbits(k);
tab = (unsigned int *) (table[d1] + idx + idx + idx);
fraction[0][0][i] = muls[*tab][m1]; fraction[1][0][i] = muls[*tab++][m2];
fraction[0][1][i] = muls[*tab][m1]; fraction[1][1][i] = muls[*tab++][m2];
fraction[0][2][i] = muls[*tab][m1]; fraction[1][2][i] = muls[*tab][m2];
}
scale+=6;
}
else {
fraction[0][0][i] = fraction[0][1][i] = fraction[0][2][i] =
fraction[1][0][i] = fraction[1][1][i] = fraction[1][2][i] = 0.0;
}
/*
should we use individual scalefac for channel 2 or
is the current way the right one , where we just copy channel 1 to
channel 2 ??
The current 'strange' thing is, that we throw away the scalefac
values for the second channel ...!!
-> changed .. now we use the scalefac values of channel one !!
*/
}
if(sblimit > (fr->down_sample_sblimit) )
sblimit = fr->down_sample_sblimit;
for(i=sblimit;i<SBLIMIT;i++)
for (j=0;j<stereo;j++)
fraction[j][0][i] = fraction[j][1][i] = fraction[j][2][i] = 0.0;
}
static void II_select_table(struct frame *fr)
{
static int translate[3][2][16] =
{ { { 0,2,2,2,2,2,2,0,0,0,1,1,1,1,1,0 } ,
{ 0,2,2,0,0,0,1,1,1,1,1,1,1,1,1,0 } } ,
{ { 0,2,2,2,2,2,2,0,0,0,0,0,0,0,0,0 } ,
{ 0,2,2,0,0,0,0,0,0,0,0,0,0,0,0,0 } } ,
{ { 0,3,3,3,3,3,3,0,0,0,1,1,1,1,1,0 } ,
{ 0,3,3,0,0,0,1,1,1,1,1,1,1,1,1,0 } } };
int table,sblim;
static struct al_table *tables[5] =
{ alloc_0, alloc_1, alloc_2, alloc_3 , alloc_4 };
static int sblims[5] = { 27 , 30 , 8, 12 , 30 };
if(fr->lsf)
table = 4;
else
table = translate[fr->sampling_frequency][2-fr->stereo][fr->bitrate_index];
sblim = sblims[table];
fr->alloc = tables[table];
fr->II_sblimit = sblim;
}
int do_layer2(struct mpstr *mp,struct frame *fr,int outmode,struct audio_info_struct *ai)
{
int clip=0;
int i,j;
int stereo = fr->stereo;
real fraction[2][4][SBLIMIT]; /* pick_table clears unused subbands */
unsigned int bit_alloc[64];
int scale[192];
int single = fr->single;
II_select_table(fr);
fr->jsbound = (fr->mode == MPG_MD_JOINT_STEREO) ?
(fr->mode_ext<<2)+4 : fr->II_sblimit;
if(stereo == 1 || single == 3)
single = 0;
II_step_one(bit_alloc, scale, fr);
for (i=0;i<SCALE_BLOCK;i++)
{
II_step_two(bit_alloc,fraction,scale,fr,i>>2);
for (j=0;j<3;j++)
{
if(single >= 0)
{
clip += (fr->synth_mono) (fraction[single][j],pcm_sample,&pcm_point);
}
else {
int p1 = pcm_point;
clip += (fr->synth) (fraction[0][j],0,pcm_sample,&p1);
clip += (fr->synth) (fraction[1][j],1,pcm_sample,&pcm_point);
}
if(pcm_point >= audiobufsize)
audio_flush(outmode,ai);
}
}
return clip;
}

1813
panda/src/mpg123/layer3.c Normal file
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138
panda/src/mpg123/tabinit.c Normal file
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#include <stdlib.h>
#include "mpg123.h"
static unsigned char *conv16to8_buf = NULL;
unsigned char *conv16to8;
#ifndef USE_MMX
real decwin[512+32];
static real cos64[16],cos32[8],cos16[4],cos8[2],cos4[1];
real *pnts[] = { cos64,cos32,cos16,cos8,cos4 };
static long intwinbase[] = {
0, -1, -1, -1, -1, -1, -1, -2, -2, -2,
-2, -3, -3, -4, -4, -5, -5, -6, -7, -7,
-8, -9, -10, -11, -13, -14, -16, -17, -19, -21,
-24, -26, -29, -31, -35, -38, -41, -45, -49, -53,
-58, -63, -68, -73, -79, -85, -91, -97, -104, -111,
-117, -125, -132, -139, -147, -154, -161, -169, -176, -183,
-190, -196, -202, -208, -213, -218, -222, -225, -227, -228,
-228, -227, -224, -221, -215, -208, -200, -189, -177, -163,
-146, -127, -106, -83, -57, -29, 2, 36, 72, 111,
153, 197, 244, 294, 347, 401, 459, 519, 581, 645,
711, 779, 848, 919, 991, 1064, 1137, 1210, 1283, 1356,
1428, 1498, 1567, 1634, 1698, 1759, 1817, 1870, 1919, 1962,
2001, 2032, 2057, 2075, 2085, 2087, 2080, 2063, 2037, 2000,
1952, 1893, 1822, 1739, 1644, 1535, 1414, 1280, 1131, 970,
794, 605, 402, 185, -45, -288, -545, -814, -1095, -1388,
-1692, -2006, -2330, -2663, -3004, -3351, -3705, -4063, -4425, -4788,
-5153, -5517, -5879, -6237, -6589, -6935, -7271, -7597, -7910, -8209,
-8491, -8755, -8998, -9219, -9416, -9585, -9727, -9838, -9916, -9959,
-9966, -9935, -9863, -9750, -9592, -9389, -9139, -8840, -8492, -8092,
-7640, -7134, -6574, -5959, -5288, -4561, -3776, -2935, -2037, -1082,
-70, 998, 2122, 3300, 4533, 5818, 7154, 8540, 9975, 11455,
12980, 14548, 16155, 17799, 19478, 21189, 22929, 24694, 26482, 28289,
30112, 31947, 33791, 35640, 37489, 39336, 41176, 43006, 44821, 46617,
48390, 50137, 51853, 53534, 55178, 56778, 58333, 59838, 61289, 62684,
64019, 65290, 66494, 67629, 68692, 69679, 70590, 71420, 72169, 72835,
73415, 73908, 74313, 74630, 74856, 74992, 75038 };
void make_decode_tables(long scaleval)
{
int i,j,k,kr,divv;
real *costab;
int idx;
for(i=0;i<5;i++)
{
kr=0x10>>i; divv=0x40>>i;
costab = pnts[i];
for(k=0;k<kr;k++)
costab[k] = 1.0 / (2.0 * cos(M_PI * ((double) k * 2.0 + 1.0) / (double) divv));
}
idx = 0;
scaleval = -scaleval;
for(i=0,j=0;i<256;i++,j++,idx+=32)
{
if(idx < 512+16)
decwin[idx+16] = decwin[idx] = (double) intwinbase[j] / 65536.0 * (double) scaleval;
if(i % 32 == 31)
idx -= 1023;
if(i % 64 == 63)
scaleval = - scaleval;
}
for( /* i=256 */ ;i<512;i++,j--,idx+=32)
{
if(idx < 512+16)
decwin[idx+16] = decwin[idx] = (double) intwinbase[j] / 65536.0 * (double) scaleval;
if(i % 32 == 31)
idx -= 1023;
if(i % 64 == 63)
scaleval = - scaleval;
}
}
#endif
void make_conv16to8_table(int mode)
{
int i;
/*
* ????: 8.0 is right but on SB cards '2.0' is a better value ???
*/
const double mul = 8.0;
if(!conv16to8_buf) {
conv16to8_buf = (unsigned char *) malloc(8192);
if(!conv16to8_buf) {
fprintf(stderr,"Can't allocate 16 to 8 converter table!\n");
exit(1);
}
conv16to8 = conv16to8_buf + 4096;
}
if(mode == AUDIO_FORMAT_ULAW_8) {
double m=127.0 / log(256.0);
int c1;
for(i=-4096;i<4096;i++) {
/* dunno whether this is a valid transformation rule ?!?!? */
if(i < 0)
c1 = 127 - (int) (log( 1.0 - 255.0 * (double) i*mul / 32768.0 ) * m);
else
c1 = 255 - (int) (log( 1.0 + 255.0 * (double) i*mul / 32768.0 ) * m);
if(c1 < 0 || c1 > 255)
fprintf(stderr,"Converror %d %d\n",i,c1);
if(c1 == 0)
c1 = 2;
conv16to8[i] = (unsigned char) c1;
}
}
else if(mode == AUDIO_FORMAT_SIGNED_8) {
for(i=-4096;i<4096;i++) {
conv16to8[i] = i>>5;
}
}
else if(mode == AUDIO_FORMAT_UNSIGNED_8) {
for(i=-4096;i<4096;i++) {
conv16to8[i] = (i>>5)+128;
}
}
else {
for(i=-4096;i<4096;i++) {
conv16to8[i] = 0;
}
}
}

79
panda/src/mpg123/vbrhead.c Normal file
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/*
* This checks for the VBR Header defined by Xing(tm)
*/
#include "mpg123.h"
static unsigned long get32bits(unsigned char *buf) {
unsigned long ret = 0;
ret = (((unsigned long) buf[0]) << 24) |
(((unsigned long) buf[1]) << 16) |
(((unsigned long) buf[2]) << 8) |
((unsigned long) buf[3]) ;
return ret;
}
int getVBRHeader(struct vbrHeader *head,unsigned char *buf, struct frame *fr)
{
int ssize;
if(fr->lay != 3)
return 0;
if(fr->lsf)
ssize = (fr->stereo == 1) ? 9 : 17;
else
ssize = (fr->stereo == 1) ? 17 : 32;
buf += ssize;
if(( buf[0] != 'X' ) || ( buf[1] != 'i' ) ||
( buf[2] != 'n' ) || ( buf[3] != 'g' ) )
return 0;
buf+=4;
head->flags = get32bits(buf);
buf+=4;
if(head->flags & VBR_FRAMES_FLAG) {
head->frames = get32bits(buf);
buf += 4;
}
if(head->flags & VBR_BYTES_FLAG) {
head->bytes = get32bits(buf);
buf += 4;
}
if(head->flags & VBR_TOC_FLAG) {
memcpy(head->toc,buf,100);
buf += 100;
}
if(head->flags & VBR_SCALE_FLAG) {
head->scale = get32bits(buf);
buf += 4;
}
fprintf(stderr,"Found XING %04lx\n",head->flags);
return 1;
}