[Mplayer-cvslog] CVS: main/libmpcodecs/native common1428.h,NONE,1.1 decode144.c,NONE,1.1 decode144.h,NONE,1.1 decode288.c,NONE,1.1 decode288.h,NONE,1.1 tables144.h,NONE,1.1 tables288.h,NONE,1.1
Roberto Togni CVS
rtognimp at mplayerhq.hu
Sun Jun 8 22:26:01 CEST 2003
Update of /cvsroot/mplayer/main/libmpcodecs/native
In directory mail:/var/tmp.root/cvs-serv19218
Added Files:
common1428.h decode144.c decode144.h decode288.c decode288.h
tables144.h tables288.h
Log Message:
RealAudio 1.0 (14_4) and 2.0 (28_8) native decoders.
Author unknown, code from a public domain player for Amiga
at http://www.honeypot.net/audio
--- NEW FILE ---
#ifndef COMMON_H
#define COMMON_H
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <math.h>
#define DATABLOCK1 20 /* size of 14.4 input block in bytes */
#define DATABLOCK2 38 /* size of 28.8 input block in bytes */
#define DATACHUNK1 1440 /* size of 14.4 input chunk in bytes */
#define DATACHUNK2 2736 /* size of 28.8 input chunk in bytes */
#define AUDIOBLOCK 160 /* size of output block in 16-bit words (320 bytes) */
//#define AUDIOBUFFER 11520 /* size of output buffer in 16-bit words (23040 bytes) */
#define AUDIOBUFFER 12288 /* size of output buffer in 16-bit words (24576 bytes) */
typedef void Real_144;
typedef void Real_288;
typedef void Real_dnet;
/* common prototypes */
Real_144 *init_144 (void);
Real_288 *init_288 (void);
Real_dnet *init_dnet (void);
void free_144 (Real_144 *global);
void free_288 (Real_288 *global);
void free_dnet (Real_dnet *global);
void deinterleave (unsigned char *in, unsigned char *out, unsigned int size);
void swapbytes (unsigned char *in, unsigned char *out, unsigned int len);
void decode_144 (Real_144 *global, unsigned char *source, signed short *target);
void decode_288 (Real_288 *global, unsigned char *in, signed short *out);
int decode_dnet (Real_dnet *global, unsigned char *in, signed short *out, int *freq, int chans);
#endif /* !COMMON_H */
--- NEW FILE ---
#include "common1428.h"
#include "decode144.h"
#include "tables144.h"
/* Initialize internal variable structure */
Real_144 *init_144(void)
{
Real_internal *glob;
if ((glob=malloc(sizeof(Real_internal))))
memset(glob,0,sizeof(Real_internal));
glob->resetflag=1;
glob->swapbuf1=glob->swapb1a;
glob->swapbuf2=glob->swapb2a;
glob->swapbuf1alt=glob->swapb1b;
glob->swapbuf2alt=glob->swapb2b;
memcpy(glob->wavtable1,wavtable1,sizeof(wavtable1));
memcpy(glob->wavtable2,wavtable2,sizeof(wavtable2));
return (Real_144 *)glob;
}
/* Free internal variable structure */
void free_144(Real_144 *global)
{
if (!global) return;
free(global);
}
/* Uncompress one block (20 bytes -> 160*2 bytes) */
void decode_144(Real_144 *global, unsigned char *source, signed short *target)
{
unsigned int a,b,c;
long s;
signed short *shptr;
unsigned int *lptr,*temp;
const short **dptr;
Real_internal *glob;
if (!global) return;
glob = (Real_internal *)global;
unpack_input(source,glob->unpacked);
glob->iptr=glob->unpacked;
glob->val=decodetable[0][(*(glob->iptr++))<<1];
dptr=decodetable+1;
lptr=glob->swapbuf1;
while (lptr<glob->swapbuf1+10)
*(lptr++)=(*(dptr++))[(*(glob->iptr++))<<1];
do_voice(glob->swapbuf1,glob->swapbuf2);
a=t_sqrt(glob->val*glob->oldval)>>12;
for (c=0;c<NBLOCKS;c++) {
if (c==(NBLOCKS-1)) {
dec1(glob,glob->swapbuf1,glob->swapbuf2,3,glob->val);
} else {
if (c*2==(NBLOCKS-2)) {
if (glob->oldval<glob->val) {
dec2(glob,glob->swapbuf1,glob->swapbuf2,3,a,glob->swapbuf2alt,c);
} else {
dec2(glob,glob->swapbuf1alt,glob->swapbuf2alt,3,a,glob->swapbuf2,c);
}
} else {
if (c*2<(NBLOCKS-2)) {
dec2(glob,glob->swapbuf1alt,glob->swapbuf2alt,3,glob->oldval,glob->swapbuf2,c);
} else {
dec2(glob,glob->swapbuf1,glob->swapbuf2,3,glob->val,glob->swapbuf2alt,c);
}
}
}
}
/* do output */
for (b=0,c=0;c<4;c++) {
glob->gval=glob->gbuf1[c*2];
glob->gsp=glob->gbuf2+b;
do_output_subblock(glob,glob->resetflag);
glob->resetflag=0;
shptr=glob->output_buffer;
while (shptr<glob->output_buffer+BLOCKSIZE) {
s=*(shptr++)<<2;
*target=s;
if (s>32767) *target=32767;
if (s<-32767) *target=-32768;
target++;
}
b+=30;
}
glob->oldval=glob->val;
temp=glob->swapbuf1alt;
glob->swapbuf1alt=glob->swapbuf1;
glob->swapbuf1=temp;
temp=glob->swapbuf2alt;
glob->swapbuf2alt=glob->swapbuf2;
glob->swapbuf2=temp;
}
/* lookup square roots in table */
static int t_sqrt(unsigned int x)
{
int s=0;
while (x>0xfff) { s++; x=x>>2; }
return (sqrt_table[x]<<s)<<2;
}
/* do 'voice' */
static void do_voice(int *a1, int *a2)
{
int buffer[10];
int *b1,*b2;
int x,y;
int *ptr,*tmp;
b1=buffer;
b2=a2;
for (x=0;x<10;x++) {
b1[x]=(*a1)<<4;
if(x>0) {
ptr=b2+x;
for (y=0;y<=x-1;y++)
b1[y]=(((*a1)*(*(--ptr)))>>12)+b2[y];
}
tmp=b1;
b1=b2;
b2=tmp;
a1++;
}
ptr=a2+10;
while (ptr>a2) (*a2++)>>=4;
}
/* do quarter-block output */
static void do_output_subblock(Real_internal *glob, int x)
{
int a,b,c,d,e,f,g;
if (x==1) memset(glob->buffer,0,20);
if ((*glob->iptr)==0) a=0;
else a=(*glob->iptr)+HALFBLOCK-1;
glob->iptr++;
b=*(glob->iptr++);
c=*(glob->iptr++);
d=*(glob->iptr++);
if (a) rotate_block(glob->buffer_2,glob->buffer_a,a);
memcpy(glob->buffer_b,etable1+b*BLOCKSIZE,BLOCKSIZE*2);
e=((ftable1[b]>>4)*glob->gval)>>8;
memcpy(glob->buffer_c,etable2+c*BLOCKSIZE,BLOCKSIZE*2);
f=((ftable2[c]>>4)*glob->gval)>>8;
if (a) g=irms(glob->buffer_a,glob->gval)>>12;
else g=0;
add_wav(glob,d,a,g,e,f,glob->buffer_a,glob->buffer_b,glob->buffer_c,glob->buffer_d);
memmove(glob->buffer_2,glob->buffer_2+BLOCKSIZE,(BUFFERSIZE-BLOCKSIZE)*2);
memcpy(glob->buffer_2+BUFFERSIZE-BLOCKSIZE,glob->buffer_d,BLOCKSIZE*2);
final(glob,glob->gsp,glob->buffer_d,glob->output_buffer,glob->buffer,BLOCKSIZE);
}
/* rotate block */
static void rotate_block(short *source, short *target, int offset)
{
short *end;
short *ptr1;
short *ptr2;
short *ptr3;
ptr2=source+BUFFERSIZE;
ptr3=ptr1=ptr2-offset;
end=target+BLOCKSIZE;
while (target<end) {
*(target++)=*(ptr3++);
if (ptr3==ptr2) ptr3=ptr1;
}
}
/* inverse root mean square */
static int irms(short *data, int factor)
{
short *p1,*p2;
unsigned int sum;
p2=(p1=data)+BLOCKSIZE;
for (sum=0;p2>p1;p1++) sum+=(*p1)*(*p1);
if (sum==0) return 0; /* OOPS - division by zero */
return (0x20000000/(t_sqrt(sum)>>8))*factor;
}
/* multiply/add wavetable */
static void add_wav(Real_internal *glob, int n, int f, int m1, int m2, int m3, short *s1, short *s2, short *s3, short *dest)
{
int a,b,c;
int x;
short *ptr,*ptr2;
ptr=glob->wavtable1+n*9;
ptr2=glob->wavtable2+n*9;
if (f!=0) {
a=((*ptr)*m1)>>((*ptr2)+1);
} else {
a=0;
}
ptr++;ptr2++;
b=((*ptr)*m2)>>((*ptr2)+1);
ptr++;ptr2++;
c=((*ptr)*m3)>>((*ptr2)+1);
ptr2=(ptr=dest)+BLOCKSIZE;
if (f!=0)
while (ptr<ptr2)
*(ptr++)=((*(s1++))*a+(*(s2++))*b+(*(s3++))*c)>>12;
else
while (ptr<ptr2)
*(ptr++)=((*(s2++))*b+(*(s3++))*c)>>12;
}
static void final(Real_internal *glob, short *i1, short *i2, void *out, int *statbuf, int len)
{
int x,sum;
int buffer[10];
short *ptr;
short *ptr2;
memcpy(glob->work,statbuf,20);
memcpy(glob->work+10,i2,len*2);
buffer[9]=i1[0];
buffer[8]=i1[1];
buffer[7]=i1[2];
buffer[6]=i1[3];
buffer[5]=i1[4];
buffer[4]=i1[5];
buffer[3]=i1[6];
buffer[2]=i1[7];
buffer[1]=i1[8];
buffer[0]=i1[9];
ptr2=(ptr=glob->work)+len;
while (ptr<ptr2) {
for(sum=0,x=0;x<=9;x++)
sum+=buffer[x]*(ptr[x]);
sum=sum>>12;
x=ptr[10]-sum;
if (x<-32768 || x>32767)
{
memset(out,0,len*2);
memset(statbuf,0,20);
return;
}
ptr[10]=x;
ptr++;
}
memcpy(out,ptr+10-len,len*2);
memcpy(statbuf,ptr,20);
}
/* Decode 20-byte input */
static void unpack_input(unsigned char *input, unsigned int *output)
{
unsigned int outbuffer[28];
unsigned short inbuffer[10];
unsigned int x;
unsigned int *ptr;
/* fix endianness */
for (x=0;x<20;x+=2)
inbuffer[x/2]=(input[x]<<8)+input[x+1];
/* unpack */
ptr=outbuffer;
*(ptr++)=27;
*(ptr++)=(inbuffer[0]>>10)&0x3f;
*(ptr++)=(inbuffer[0]>>5)&0x1f;
*(ptr++)=inbuffer[0]&0x1f;
*(ptr++)=(inbuffer[1]>>12)&0xf;
*(ptr++)=(inbuffer[1]>>8)&0xf;
*(ptr++)=(inbuffer[1]>>5)&7;
*(ptr++)=(inbuffer[1]>>2)&7;
*(ptr++)=((inbuffer[1]<<1)&6)|((inbuffer[2]>>15)&1);
*(ptr++)=(inbuffer[2]>>12)&7;
*(ptr++)=(inbuffer[2]>>10)&3;
*(ptr++)=(inbuffer[2]>>5)&0x1f;
*(ptr++)=((inbuffer[2]<<2)&0x7c)|((inbuffer[3]>>14)&3);
*(ptr++)=(inbuffer[3]>>6)&0xff;
*(ptr++)=((inbuffer[3]<<1)&0x7e)|((inbuffer[4]>>15)&1);
*(ptr++)=(inbuffer[4]>>8)&0x7f;
*(ptr++)=(inbuffer[4]>>1)&0x7f;
*(ptr++)=((inbuffer[4]<<7)&0x80)|((inbuffer[5]>>9)&0x7f);
*(ptr++)=(inbuffer[5]>>2)&0x7f;
*(ptr++)=((inbuffer[5]<<5)&0x60)|((inbuffer[6]>>11)&0x1f);
*(ptr++)=(inbuffer[6]>>4)&0x7f;
*(ptr++)=((inbuffer[6]<<4)&0xf0)|((inbuffer[7]>>12)&0xf);
*(ptr++)=(inbuffer[7]>>5)&0x7f;
*(ptr++)=((inbuffer[7]<<2)&0x7c)|((inbuffer[8]>>14)&3);
*(ptr++)=(inbuffer[8]>>7)&0x7f;
*(ptr++)=((inbuffer[8]<<1)&0xfe)|((inbuffer[9]>>15)&1);
*(ptr++)=(inbuffer[9]>>8)&0x7f;
*(ptr++)=(inbuffer[9]>>1)&0x7f;
*(output++)=outbuffer[11];
for (x=1;x<11;*(output++)=outbuffer[x++]);
ptr=outbuffer+12;
for (x=0;x<16;x+=4)
{
*(output++)=ptr[x];
*(output++)=ptr[x+2];
*(output++)=ptr[x+3];
*(output++)=ptr[x+1];
}
}
static unsigned int rms(int *data, int f)
{
int *c;
int x;
int d;
unsigned int res;
int b;
c=data;
b=0;
res=0x10000;
for (x=0;x<10;x++)
{
res=(((0x1000000-(*c)*(*c))>>12)*res)>>12;
if (res==0) return 0;
if (res<=0x3fff)
{
while (res<=0x3fff)
{
b++;
res<<=2;
}
} else {
if (res>0x10000)
return 0; /* We're screwed, might as well go out with a bang. :P */
}
c++;
}
if (res>0) res=t_sqrt(res);
res>>=(b+10);
res=(res*f)>>10;
return res;
}
static void dec1(Real_internal *glob, int *data, int *inp, int n, int f)
{
short *ptr,*end;
*(glob->decptr++)=rms(data,f);
glob->decptr++;
end=(ptr=glob->decsp)+(n*10);
while (ptr<end) *(ptr++)=*(inp++);
}
static void dec2(Real_internal *glob, int *data, int *inp, int n, int f, int *inp2, int l)
{
unsigned int *ptr1,*ptr2;
int work[10];
int a,b;
int x;
int result;
if(l+1<NBLOCKS/2) a=NBLOCKS-(l+1);
else a=l+1;
b=NBLOCKS-a;
if (l==0)
{
glob->decsp=glob->sptr=glob->gbuf2;
glob->decptr=glob->gbuf1;
}
ptr1=inp;
ptr2=inp2;
for (x=0;x<10*n;x++)
*(glob->sptr++)=(a*(*ptr1++)+b*(*ptr2++))>>2;
result=eq(glob,glob->decsp,work);
if (result==1)
{
dec1(glob,data,inp,n,f);
} else {
*(glob->decptr++)=rms(work,f);
glob->decptr++;
}
glob->decsp+=n*10;
}
static int eq(Real_internal *glob, short *in, int *target)
{
int retval;
int a;
int b;
int c;
unsigned int u;
short *sptr;
int *ptr1,*ptr2,*ptr3;
int *bp1,*bp2,*temp;
retval=0;
bp1=glob->buffer1;
bp2=glob->buffer2;
ptr2=(ptr3=glob->buffer2)+9;
sptr=in;
while (ptr2>=ptr3)
*(ptr3++)=*(sptr++);
target+=9;
a=bp2[9];
*target=a;
if (a+0x1000>0x1fff)
return 0; /* We're screwed, might as well go out with a bang. :P */
c=8;u=a;
while (c>=0)
{
if (u==0x1000) u++;
if (u==0xfffff000) u--;
b=0x1000-((u*u)>>12);
if (b==0) b++;
ptr2=bp1;
ptr1=(ptr3=bp2)+c;
for (u=0;u<=c;u++)
*(ptr2++)=((*(ptr3++)-(((*target)*(*(ptr1--)))>>12))*(0x1000000/b))>>12;
*(--target)=u=bp1[(c--)];
if ((u+0x1000)>0x1fff) retval=1;
temp=bp2;
bp2=bp1;
bp1=temp;
}
return retval;
}
--- NEW FILE ---
#ifndef DECODE144_H
#define DECODE144_H
/* internal globals */
typedef struct {
unsigned int resetflag, val, oldval;
unsigned int unpacked[28]; /* buffer for unpacked input */
unsigned int *iptr; /* pointer to current input (from unpacked) */
unsigned int gval;
unsigned short *gsp;
unsigned int gbuf1[8];
unsigned short gbuf2[120];
signed short output_buffer[40];
unsigned int *decptr; /* decoder ptr */
signed short *decsp;
/* the swapped buffers */
unsigned int swapb1a[10];
unsigned int swapb2a[10];
unsigned int swapb1b[10];
unsigned int swapb2b[10];
unsigned int *swapbuf1;
unsigned int *swapbuf2;
unsigned int *swapbuf1alt;
unsigned int *swapbuf2alt;
unsigned int buffer[5];
unsigned short int buffer_2[148];
unsigned short int buffer_a[40];
unsigned short int buffer_b[40];
unsigned short int buffer_c[40];
unsigned short int buffer_d[40];
unsigned short int work[50];
unsigned short *sptr;
int buffer1[10];
int buffer2[10];
signed short wavtable1[2304];
unsigned short wavtable2[2304];
} Real_internal;
/* consts */
#define NBLOCKS 4 /* number of segments within a block */
#define BLOCKSIZE 40 /* (quarter) block size in 16-bit words (80 bytes) */
#define HALFBLOCK 20 /* BLOCKSIZE/2 */
#define BUFFERSIZE 146 /* for do_output */
/* prototypes */
static int t_sqrt (unsigned int x);
static void do_voice (int *a1, int *a2);
static void do_output_subblock (Real_internal *glob, int x);
static void rotate_block (short *source, short *target, int offset);
static int irms (short *data, int factor);
static void add_wav (Real_internal *glob, int n, int f, int m1, int m2, int m3, short *s1, short *s2, short *s3, short *dest);
static void final (Real_internal *glob, short *i1, short *i2, void *out, int *statbuf, int len);
static void unpack_input (unsigned char *input, unsigned int *output);
static unsigned int rms (int *data, int f);
static void dec1 (Real_internal *glob, int *data, int *inp, int n, int f);
static void dec2 (Real_internal *glob, int *data, int *inp, int n, int f, int *inp2, int l);
static int eq (Real_internal *glob, short *in, int *target);
#endif /* !DECODE144_H */
--- NEW FILE ---
#include "common1428.h"
#include "decode288.h"
#include "tables288.h"
/* Initialize internal variable structure */
Real_288 *init_288(void)
{
Real_internal *glob;
if ((glob=malloc(sizeof(Real_internal))))
memset(glob,0,sizeof(Real_internal));
return (Real_288 *)glob;
}
/* Free internal variable structure */
void free_288(Real_288 *global)
{
if (!global) return;
free(global);
}
/* Unlike the 14.4 format, 28.8 blocks are interleaved */
/* to dilute the effects of transmission errors */
void deinterleave(unsigned char *in, unsigned char *out, unsigned int size)
{
unsigned int x=0,y=0,z=0;
if (size>=38) z=size-38;
else return;
while (x<=z)
{
memcpy(out+y,in+x,38);
x+=38;y+=456;
if (y>z) y-=z;
}
}
/* Decode a block (celp) */
void decode_288(Real_288 *global, unsigned char *in, signed short int *out)
{
int x,y;
unsigned short int buffer[32];
Real_internal *glob;
if (!global) return;
glob = (Real_internal *)global;
unpack(buffer,in,32);
for (x=0;x<32;x++)
{
glob->phasep=(glob->phase=x&7)*5;
decode(glob,buffer[x]);
for (y=0;y<5;*(out++)=8*glob->output[glob->phasep+(y++)]);
if (glob->phase==3) update(glob);
}
}
/* initial decode */
static void unpack(unsigned short *tgt, unsigned char *src, int len)
{
int x,y,z;
int n,temp;
int buffer[38];
for (x=0;x<len;tgt[x++]=0)
buffer[x]=9+(x&1);
for (x=y=z=0;x<38;x++) {
n=buffer[y]-z;
temp=src[x];
if (n<8) temp&=255>>(8-n);
tgt[y]+=temp<<z;
if (n<=8) {
tgt[++y]+=src[x]>>n;
z=8-n;
} else z+=8;
}
}
static void update(Real_internal *glob)
{
int x,y;
float buffer1[40],temp1[37];
float buffer2[8],temp2[11];
for (x=0,y=glob->phasep+5;x<40;buffer1[x++]=glob->output[(y++)%40]);
co(36,40,35,buffer1,temp1,glob->st1a,glob->st1b,table1);
if (pred(temp1,glob->st1,36))
colmult(glob->pr1,glob->st1,table1a,36);
for (x=0,y=glob->phase+1;x<8;buffer2[x++]=glob->history[(y++)%8]);
co(10,8,20,buffer2,temp2,glob->st2a,glob->st2b,table2);
if (pred(temp2,glob->st2,10))
colmult(glob->pr2,glob->st2,table2a,10);
}
/* Decode and produce output */
static void decode(Real_internal *glob, unsigned int input)
{
unsigned int x,y;
float f;
double sum,sumsum;
float *p1,*p2;
float buffer[5];
const float *table;
for (x=36;x--;glob->sb[x+5]=glob->sb[x]);
for (x=5;x--;) {
p1=glob->sb+x;p2=glob->pr1;
for (sum=0,y=36;y--;sum-=(*(++p1))*(*(p2++)));
glob->sb[x]=sum;
}
f=amptable[input&7];
table=codetable+(input>>3)*5;
/* convert log and do rms */
for (sum=32,x=10;x--;sum-=glob->pr2[x]*glob->lhist[x]);
if (sum<0) sum=0; else if (sum>60) sum=60;
sumsum=exp(sum*0.1151292546497)*f; /* pow(10.0,sum/20)*f */
for (sum=0,x=5;x--;) { buffer[x]=table[x]*sumsum; sum+=buffer[x]*buffer[x]; }
if ((sum/=5)<1) sum=1;
/* shift and store */
for (x=10;--x;glob->lhist[x]=glob->lhist[x-1]);
*glob->lhist=glob->history[glob->phase]=10*log10(sum)-32;
for (x=1;x<5;x++) for (y=x;y--;buffer[x]-=glob->pr1[x-y-1]*buffer[y]);
/* output */
for (x=0;x<5;x++) {
f=glob->sb[4-x]+buffer[x];
if (f>4095) f=4095; else if (f<-4095) f=-4095;
glob->output[glob->phasep+x]=glob->sb[4-x]=f;
}
}
/* column multiply */
static void colmult(float *tgt, float *m1, const float *m2, int n)
{
while (n--)
*(tgt++)=(*(m1++))*(*(m2++));
}
static int pred(float *in, float *tgt, int n)
{
int x,y;
float *p1,*p2;
double f0,f1,f2;
float temp;
if (in[n]==0) return 0;
if ((f0=*in)<=0) return 0;
for (x=1;;x++) {
if (n<x) return 1;
p1=in+x;
p2=tgt;
f1=*(p1--);
for (y=x;--y;f1+=(*(p1--))*(*(p2++)));
p1=tgt+x-1;
p2=tgt;
*(p1--)=f2=-f1/f0;
for (y=x>>1;y--;) {
temp=*p2+*p1*f2;
*(p1--)+=*p2*f2;
*(p2++)=temp;
}
if ((f0+=f1*f2)<0) return 0;
}
}
static void co(int n, int i, int j, float *in, float *out, float *st1, float *st2, const float *table)
{
int a,b,c;
unsigned int x;
float *fp,*fp2;
float buffer1[37];
float buffer2[37];
float work[111];
/* rotate and multiply */
c=(b=(a=n+i)+j)-i;
fp=st1+i;
for (x=0;x<b;x++) {
if (x==c) fp=in;
work[x]=*(table++)*(*(st1++)=*(fp++));
}
prodsum(buffer1,work+n,i,n);
prodsum(buffer2,work+a,j,n);
for (x=0;x<=n;x++) {
*st2=*st2*(0.5625)+buffer1[x];
out[x]=*(st2++)+buffer2[x];
}
*out*=1.00390625; /* to prevent clipping */
}
/* product sum (lsf) */
static void prodsum(float *tgt, float *src, int len, int n)
{
unsigned int x;
float *p1,*p2;
double sum;
while (n>=0)
{
p1=(p2=src)-n;
for (sum=0,x=len;x--;sum+=(*p1++)*(*p2++));
tgt[n--]=sum;
}
}
--- NEW FILE ---
#ifndef DECODE288_H
#define DECODE288_H
/* internal globals */
typedef struct {
float history[8];
float output[40];
float pr1[36];
float pr2[10];
int phase, phasep;
float st1a[111],st1b[37],st1[37];
float st2a[38],st2b[11],st2[11];
float sb[41];
float lhist[10];
} Real_internal;
/* prototypes */
static void unpack (unsigned short *tgt, unsigned char *src, int len);
static void decode (Real_internal *internal, unsigned int input);
static void update (Real_internal *internal);
static void colmult (float *tgt, float *m1, const float *m2, int n);
static int pred (float *in, float *tgt, int n);
static void co (int n, int i, int j, float *in, float *out, float *st1, float *st2, const float *table);
static void prodsum (float *tgt, float *src, int len, int n);
#endif /* !DECODE288_H */
--- NEW FILE ---
#ifndef TABLES144_H
#define TABLES144_H
/* 14.4 data tables */
const unsigned short sqrt_table[4096]={
0x0000,0x0400,0x05a8,0x06ed,0x0800,0x08f1,0x09cc,0x0a95,
0x0b50,0x0c00,0x0ca6,0x0d44,0x0ddb,0x0e6c,0x0ef7,0x0f7d,
0x1000,0x107e,0x10f8,0x116f,0x11e3,0x1254,0x12c2,0x132e,
0x1398,0x1400,0x1465,0x14c8,0x152a,0x158a,0x15e8,0x1645,
0x16a0,0x16fa,0x1752,0x17aa,0x1800,0x1854,0x18a8,0x18fa,
0x194c,0x199c,0x19ec,0x1a3a,0x1a88,0x1ad5,0x1b21,0x1b6c,
0x1bb6,0x1c00,0x1c48,0x1c90,0x1cd8,0x1d1e,0x1d64,0x1daa,
0x1dee,0x1e33,0x1e76,0x1eb9,0x1efb,0x1f3d,0x1f7e,0x1fbf,
0x2000,0x203f,0x207f,0x20bd,0x20fc,0x2139,0x2177,0x21b4,
0x21f0,0x222d,0x2268,0x22a4,0x22df,0x2319,0x2353,0x238d,
0x23c6,0x2400,0x2438,0x2471,0x24a9,0x24e0,0x2518,0x254f,
0x2585,0x25bc,0x25f2,0x2628,0x265d,0x2693,0x26c8,0x26fc,
0x2731,0x2765,0x2799,0x27cc,0x2800,0x2833,0x2865,0x2898,
0x28ca,0x28fc,0x292e,0x2960,0x2991,0x29c2,0x29f3,0x2a24,
[...2368 lines suppressed...]
0xf6ab,0xf7d8,0xf905,0xfa1b,0xfb31,0xfc32,0xfd33,0xfe22,
0xff11,0xfffe,0x00ea,0x01f6,0x0302,0x0462,0x05c2};
static const short decodetable9[15]={
0xf9df,0xfb3f,0xfca0,0xfdbc,0xfed8,0xffd1,0x00c8,0x01b3,
0x029e,0x038f,0x047f,0x0596,0x06ad,0x07ff,0x0951};
static const short decodetable10[15]={
0xf768,0xf890,0xf9b8,0xfac9,0xfbda,0xfcd0,0xfdc7,0xfea8,
0xff88,0x006c,0x0152,0x0258,0x035f,0x04da,0x0655};
static const short decodetable11[7]={
0xfd97,0xff2b,0x00be,0x01f0,0x0322,0x0476,0x05cb};
const short *decodetable[11]={
decodetable1,decodetable2,decodetable3,decodetable4,decodetable5,
decodetable6,decodetable7,decodetable8,decodetable9,decodetable10,
decodetable11};
#endif /* !TABLES144_H */
--- NEW FILE ---
#ifndef TABLES288_H
#define TABLES288_H
const float amptable[8]={ 0.515625, 0.90234375, 1.57910156, 2.76342773,
-0.515625,-0.90234375,-1.57910156,-2.76342773 };
const float codetable[640]={
0.326171875, -1.4404296875, -0.6123046875, -0.8740234375, -1.24658203125,
-2.45703125, -2.23486328125, -0.51025390625, 1.419921875, 1.6201171875,
-1.37646484375, -1.30712890625, -0.462890625, -1.37939453125, -2.1728515625,
-3.26123046875, -0.166015625, 0.7236328125, -0.623046875, 0.6162109375,
-0.2744140625, -3.29931640625, 0.62548828125, 0.08740234375, -0.6220703125,
-1.2265625, -3.4814453125, -2.40478515625, 3.37548828125, 1.17724609375,
-1.2099609375, -0.076171875, 2.28662109375, -1.89111328125, 0,
-4.0078125, 1.044921875, -0.2333984375, -1.35986328125, 0.26025390625,
0.92236328125, 1.34716796875, 0.67431640625, -3.39599609375, -2.88720703125,
2.4814453125, -1.201171875, -2.8212890625, 0.87744140625, 0.27734375,
-1.078125, -1.61572265625, -2.20849609375, -3.044921875, -3.66455078125,
-1.32763671875, 2.1279296875, -1.458984375, -0.56103515625, 1.30078125,
0.61474609375, 0.48583984375, 1.32373046875, -1.203125, -5.0732421875,
0.8408203125, -3.69580078125, -1.3388671875, 1.06005859375, -1.13720703125,
0.50390625, 0.36474609375, -0.4189453125, -3.8798828125, -6.27099609375,
1.5166015625, 2.37109375, -2.04736328125, -1.24072265625, 0.50537109375,
0.9091796875, -0.46875, -3.236328125, 0.2001953125, 2.8720703125,
-1.21728515625, -1.283203125, -1.953125, -0.029296875, 3.5166015625,
-1.3046875, 0.7060546875, 0.75, -1.87060546875, 0.60205078125,
-2.5888671875, 3.375, 0.77587890625, -2.04443359375, 1.78955078125,
-1.6875, -3.9892578125, -3.76416015625, 0.67578125, 2.2939453125,
-2.29443359375, -3.03173828125, -5.45703125, 3.95703125, 8.2177734375,
0.4541015625, 3.419921875, 0.61962890625, -4.38330078125, 1.25341796875,
2.27001953125, 5.763671875, 1.68017578125, -2.76220703125, 0.58544921875,
1.2412109375, -0.08935546875, -4.32568359375, -3.89453125, 1.5771484375,
-1.40234375, -0.98193359375, -4.74267578125, -4.09423828125, 6.33935546875,
1.5068359375, 1.044921875, -1.796875, -4.70849609375, -1.4140625,
-3.71533203125, 3.18115234375, -1.11474609375, -1.2314453125, 3.091796875,
-1.62744140625, -2.744140625, -4.4580078125, -5.43505859375, 2.70654296875,
-0.19873046875, -3.28173828125, -8.5283203125, -1.41064453125, 5.6484375,
1.802734375, 3.318359375, -0.1279296875, -5.2958984375, -0.90625,
3.55224609375, 6.544921875, -1.45947265625, -5.17333984375, 2.41015625,
0.119140625, -1.08349609375, 1.296875, 1.84375, -2.642578125,
-1.97412109375, -2.8974609375, 1.04052734375, 0.42138671875, -1.3994140625,
-1.6123046875, 0.85107421875, -0.9794921875, -0.0625, -1.001953125,
-3.10595703125, 1.6318359375, -0.77294921875, -0.01025390625, 0.5576171875,
-1.87353515625, -0.89404296875, 3.12353515625, 1.24267578125, -1.390625,
-4.556640625, -3.1875, 2.59228515625, 0.9697265625, -1.09619140625,
-2.1923828125, 0.365234375, 0.94482421875, -1.47802734375, -0.24072265625,
-4.51904296875, 2.6201171875, 1.55908203125, -2.19384765625, 0.87109375,
2.3359375, -0.1806640625, 0.9111328125, 0.51611328125, -0.92236328125,
3.5849609375, -1.3134765625, -1.25830078125, 0.330078125, -0.29833984375,
-0.2451171875, 1.09130859375, -0.9033203125, -0.86767578125, -1.00048828125,
0.49365234375, 1.89453125, -1.20361328125, 1.07861328125, -0.07421875,
1.265625, 1.38134765625, 2.728515625, 1.38623046875, -3.5673828125,
-1.48876953125, -2.4013671875, 2.90771484375, 4.49267578125, -2.17138671875,
0.34033203125, 1.908203125, 2.8310546875, -2.17333984375, -2.267578125,
-1.03564453125, 2.658203125, -1.2548828125, 0.15673828125, -0.5869140625,
1.3896484375, -1.0185546875, 1.724609375, 0.2763671875, -0.345703125,
-2.08935546875, 0.4638671875, 2.431640625, 1.83056640625, 0.220703125,
-1.212890625, 1.7099609375, 0.83935546875, -0.0830078125, 0.1162109375,
-1.67724609375, 0.12841796875, 1.0322265625, -0.97900390625, 1.15283203125,
-3.5830078125, -0.58984375, 4.56396484375, -0.59375, -1.95947265625,
-6.5908203125, -0.21435546875, 3.919921875, -2.06640625, 0.17626953125,
-1.82080078125, 2.65283203125, 0.978515625, -2.30810546875, -0.61474609375,
-1.9462890625, 3.78076171875, 4.11572265625, -1.80224609375, -0.48193359375,
2.5380859375, -0.20654296875, 0.5615234375, -0.62548828125, 0.3984375,
3.61767578125, 2.00634765625, -1.92822265625, 1.3134765625, 0.0146484384313,
0.6083984375, 1.49169921875, -0.01708984375, -0.6689453125, -0.1201171875,
-0.72705078125, 2.75146484375, -0.3310546875, -1.28271484375, 1.5478515625,
2.3583984375, -2.23876953125, 0.98046875, -0.5185546875, 0.39013671875,
-0.06298828125, 0.35009765625, 2.2431640625, 7.29345703125, 5.2275390625,
0.20361328125, 1.34716796875, 0.9033203125, -2.46923828125, -0.56298828125,
-1.89794921875, 3.59423828125, -2.81640625, 2.09228515625, 0.3251953125,
0.70458984375, -0.4580078125, 0.009765625, -1.03466796875, -0.82861328125,
-1.8125, -1.6611328125, -1.080078125, 0.0537109375, 1.04296875,
-1.44140625, 0.005859375, -0.765625, -1.708984375, -0.90576171875,
-0.64208984375, -0.84521484375, 0.56640625, -0.2724609375, 0.83447265625,
0.04296875, -2.23095703125, 0.0947265625, -0.2216796875, -1.44384765625,
-1.38623046875, -0.8134765625, -0.13330078125, 1.017578125, -0.07568359375,
-0.09228515625, -1.16015625, 0.81201171875, -0.5078125, -1.19580078125,
-1.3876953125, -0.66845703125, 0.310546875, -0.12109375, -1.30712890625,
0.74072265625, 0.03857421875, -1.47119140625, -1.79150390625, -0.47509765625,
0.93408203125, -1.21728515625, -2.59375, -0.36572265625, 0.62060546875,
-1.41748046875, -1.623046875, -1.833984375, -1.8017578125, -0.89306640625,
-1.42236328125, -0.75537109375, -1.34765625, -0.6865234375, 0.548828125,
0.900390625, -0.8955078125, 0.22265625, 0.3447265625, -2.0859375,
0.22802734375, -2.078125, -0.93212890625, 0.74267578125, 0.5537109375,
-0.06201171875, -0.4853515625, -0.31103515625, -0.72802734375, -3.1708984375,
0.42626953125, -0.99853515625, -1.869140625, -1.36328125, -0.2822265625,
1.12841796875, -0.88720703125, 1.28515625, -1.490234375, 0.9609375,
0.31298828125, 0.5830078125, 0.92431640625, 2.00537109375, 3.0966796875,
-0.02197265625, 0.5849609375, 1.0546875, -0.70751953125, 1.07568359375,
-0.978515625, 0.83642578125, 1.7177734375, 1.294921875, 2.07568359375,
1.43359375, -1.9375, 0.625, 0.06396484375, -0.720703125,
1.38037109375, 0.00390625, -0.94140625, 1.2978515625, 1.71533203125,
1.56201171875, -0.3984375, 1.31201171875, -0.85009765625, -0.68701171875,
1.439453125, 1.96728515625, 0.1923828125, -0.12353515625, 0.6337890625,
2.0927734375, 0.02490234375, -2.20068359375, -0.015625, -0.32177734375,
1.90576171875, 2.7568359375, -2.728515625, -1.265625, 2.78662109375,
-0.2958984375, 0.6025390625, -0.78466796875, -2.53271484375, 0.32421875,
-0.25634765625, 1.767578125, -1.0703125, -1.23388671875, 0.83349609375,
2.09814453125, -1.58740234375, -1.11474609375, 0.396484375, -1.10546875,
2.81494140625, 0.2578125, -1.60498046875, 0.66015625, 0.81640625,
1.33544921875, 0.60595703125, -0.53857421875, -1.59814453125, -1.66357421875,
1.96923828125, 0.8046875, -1.44775390625, -0.5732421875, 0.705078125,
0.0361328125, 0.4482421875, 0.97607421875, 0.44677734375, -0.5009765625,
-1.21875, -0.78369140625, 0.9931640625, 1.4404296875, 0.11181640625,
-1.05859375, 0.99462890625, 0.00732421921566, -0.6171875, -0.1015625,
-1.734375, 0.7470703125, 0.28369140625, 0.72802734375, 0.4697265625,
-1.27587890625, -1.1416015625, 1.76806640625, -0.7265625, -1.06689453125,
-0.85302734375, 0.03955078125, 2.7041015625, 0.69921875, -1.10205078125,
-0.49755859375, 0.42333984375, 0.1044921875, -1.115234375, -0.7373046875,
-0.822265625, 1.375, -0.11181640625, 1.24560546875, -0.67822265625,
1.32177734375, 0.24609375, 0.23388671875, 1.35888671875, -0.49267578125,
1.22900390625, -0.72607421875, -0.779296875, 0.30322265625, 0.94189453125,
-0.072265625, 1.0771484375, -2.09375, 0.630859375, -0.68408203125,
-0.25732421875, 0.60693359375, -1.33349609375, 0.93212890625, 0.625,
1.04931640625, -0.73291015625, 1.80078125, 0.2978515625, -2.24169921875,
1.6142578125, -1.64501953125, 0.91552734375, 1.775390625, -0.59423828125,
1.2568359375, 1.22705078125, 0.70751953125, -1.5009765625, -2.43115234375,
0.3974609375, 0.8916015625, -1.21923828125, 2.0673828125, -1.99072265625,
0.8125, -0.107421875, 1.6689453125, 0.4892578125, 0.54443359375,
0.38134765625, 0.8095703125, 1.91357421875, 2.9931640625, 1.533203125,
0.560546875, 1.98486328125, 0.740234375, 0.39794921875, 0.09716796875,
0.58154296875, 1.21533203125, 1.25048828125, 1.18212890625, 1.19287109375,
0.3759765625, -2.88818359375, 2.69287109375, -0.1796875, -1.56201171875,
0.5810546875, 0.51123046875, 1.8271484375, 3.38232421875, -1.02001953125,
0.142578125, 1.51318359375, 2.103515625, -0.3701171875, -1.19873046875,
0.25537109375, 1.91455078125, 1.974609375, 0.6767578125, 0.04150390625,
2.13232421875, 0.4912109375, -0.611328125, -0.7158203125, -0.67529296875,
1.880859375, 0.77099609375, -0.03759765625, 1.0078125, 0.423828125,
2.49462890625, 1.42529296875, -0.0986328125, 0.17529296875, -0.24853515625,
1.7822265625, 1.5654296875, 1.12451171875, 0.82666015625, 0.6328125,
1.41845703125, -1.90771484375, 0.11181640625, -0.583984375, -1.138671875,
2.91845703125, -1.75048828125, 0.39306640625, 1.86767578125, -1.5322265625,
1.8291015625, -0.2958984375, 0.02587890625, -0.13134765625, -1.61181640625,
0.2958984375, 0.9853515625, -0.642578125, 1.984375, 0.1943359375
};
const float table1[111]={
0.576690972, 0.580838025, 0.585013986, 0.589219987, 0.59345597, 0.597723007,
0.602020264, 0.606384277, 0.610748291, 0.615142822, 0.619598389, 0.624084473,
0.628570557, 0.633117676, 0.637695313, 0.642272949, 0.646911621, 0.651580811,
0.656280518, 0.66104126, 0.665802002, 0.670593262, 0.675445557, 0.680328369,
0.685241699, 0.690185547, 0.695159912, 0.700164795, 0.705230713, 0.710327148,
0.715454102, 0.720611572, 0.725830078, 0.731048584, 0.736328125, 0.741638184,
0.747009277, 0.752380371, 0.7578125, 0.763305664, 0.768798828, 0.774353027,
0.779937744, 0.785583496, 0.791229248, 0.796936035, 0.802703857, 0.808502197,
0.814331055, 0.820220947, 0.826141357, 0.832092285, 0.838104248, 0.844146729,
0.850250244, 0.856384277, 0.862548828, 0.868774414, 0.875061035, 0.881378174,
0.88772583, 0.894134521, 0.900604248, 0.907104492, 0.913635254, 0.920227051,
0.926879883, 0.933563232, 0.940307617, 0.94708252, 0.953918457, 0.96081543,
0.96774292, 0.974731445, 0.981781006, 0.988861084, 0.994842529, 0.998565674,
0.999969482, 0.99911499, 0.996002197, 0.990600586, 0.982910156, 0.973022461,
0.960876465, 0.946533203, 0.930053711, 0.911437988, 0.89074707, 0.868041992,
0.843322754, 0.816680908, 0.788208008, 0.757904053, 0.725891113, 0.692199707,
0.656921387, 0.620178223, 0.582000732, 0.542480469, 0.501739502, 0.459838867,
0.416900635, 0.373016357, 0.328277588, 0.282775879, 0.236663818, 0.189971924,
0.142852783, 0.0954284668, 0.0477600098
};
const float table2[38]={
0.505699992, 0.524200022, 0.54339999, 0.563300014, 0.583953857, 0.60534668,
0.627502441, 0.650482178, 0.674316406, 0.699005127, 0.724578857, 0.75112915,
0.778625488, 0.807128906, 0.836669922, 0.86730957, 0.899078369, 0.932006836,
0.961486816, 0.982757568, 0.995635986, 1, 0.995819092, 0.983154297,
0.96206665, 0.932769775, 0.895507813, 0.850585938, 0.798400879, 0.739379883,
0.674072266, 0.602996826, 0.526763916, 0.446014404, 0.361480713, 0.273834229,
0.183868408, 0.0923461914
};
const float table1a[36]={
0.98828125, 0.976699829, 0.965254128, 0.953942537, 0.942763507, 0.931715488,
0.920796931, 0.910006344, 0.899342179, 0.888803005, 0.878387332, 0.868093729,
0.857920766, 0.847867012, 0.837931097, 0.828111589, 0.818407178, 0.808816493,
0.799338162, 0.789970934, 0.780713439, 0.771564424, 0.762522638, 0.753586829,
0.744755745, 0.736028135, 0.727402806, 0.718878567, 0.710454226, 0.702128589,
0.693900526, 0.685768902, 0.677732527, 0.669790328, 0.66194123, 0.654184103
};
const float table2a[10]={
0.90625, 0.821289063, 0.74432373, 0.674499512, 0.61126709,
0.553955078, 0.50201416, 0.454956055, 0.41229248, 0.373657227
};
#endif /* !TABLES288_H */
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