mirror of
https://github.com/mpv-player/mpv
synced 2024-10-18 10:25:02 +02:00
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 git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@10261 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
rtognimp
parent
0e5c9a508f
commit
7b0c242d34
34
libmpcodecs/native/common1428.h
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34
libmpcodecs/native/common1428.h
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@ -0,0 +1,34 @@
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#ifndef COMMON_H
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#define COMMON_H
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <math.h>
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#define DATABLOCK1 20 /* size of 14.4 input block in bytes */
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#define DATABLOCK2 38 /* size of 28.8 input block in bytes */
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#define DATACHUNK1 1440 /* size of 14.4 input chunk in bytes */
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#define DATACHUNK2 2736 /* size of 28.8 input chunk in bytes */
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#define AUDIOBLOCK 160 /* size of output block in 16-bit words (320 bytes) */
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//#define AUDIOBUFFER 11520 /* size of output buffer in 16-bit words (23040 bytes) */
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#define AUDIOBUFFER 12288 /* size of output buffer in 16-bit words (24576 bytes) */
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typedef void Real_144;
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typedef void Real_288;
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typedef void Real_dnet;
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/* common prototypes */
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Real_144 *init_144 (void);
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Real_288 *init_288 (void);
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Real_dnet *init_dnet (void);
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void free_144 (Real_144 *global);
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void free_288 (Real_288 *global);
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void free_dnet (Real_dnet *global);
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void deinterleave (unsigned char *in, unsigned char *out, unsigned int size);
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void swapbytes (unsigned char *in, unsigned char *out, unsigned int len);
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void decode_144 (Real_144 *global, unsigned char *source, signed short *target);
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void decode_288 (Real_288 *global, unsigned char *in, signed short *out);
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int decode_dnet (Real_dnet *global, unsigned char *in, signed short *out, int *freq, int chans);
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#endif /* !COMMON_H */
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437
libmpcodecs/native/decode144.c
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437
libmpcodecs/native/decode144.c
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@ -0,0 +1,437 @@
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#include "common1428.h"
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#include "decode144.h"
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#include "tables144.h"
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/* Initialize internal variable structure */
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Real_144 *init_144(void)
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{
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Real_internal *glob;
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if ((glob=malloc(sizeof(Real_internal))))
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memset(glob,0,sizeof(Real_internal));
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glob->resetflag=1;
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glob->swapbuf1=glob->swapb1a;
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glob->swapbuf2=glob->swapb2a;
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glob->swapbuf1alt=glob->swapb1b;
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glob->swapbuf2alt=glob->swapb2b;
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memcpy(glob->wavtable1,wavtable1,sizeof(wavtable1));
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memcpy(glob->wavtable2,wavtable2,sizeof(wavtable2));
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return (Real_144 *)glob;
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}
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/* Free internal variable structure */
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void free_144(Real_144 *global)
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{
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if (!global) return;
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free(global);
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}
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/* Uncompress one block (20 bytes -> 160*2 bytes) */
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void decode_144(Real_144 *global, unsigned char *source, signed short *target)
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{
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unsigned int a,b,c;
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long s;
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signed short *shptr;
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unsigned int *lptr,*temp;
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const short **dptr;
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Real_internal *glob;
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if (!global) return;
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glob = (Real_internal *)global;
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unpack_input(source,glob->unpacked);
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glob->iptr=glob->unpacked;
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glob->val=decodetable[0][(*(glob->iptr++))<<1];
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dptr=decodetable+1;
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lptr=glob->swapbuf1;
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while (lptr<glob->swapbuf1+10)
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*(lptr++)=(*(dptr++))[(*(glob->iptr++))<<1];
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do_voice(glob->swapbuf1,glob->swapbuf2);
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a=t_sqrt(glob->val*glob->oldval)>>12;
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for (c=0;c<NBLOCKS;c++) {
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if (c==(NBLOCKS-1)) {
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dec1(glob,glob->swapbuf1,glob->swapbuf2,3,glob->val);
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} else {
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if (c*2==(NBLOCKS-2)) {
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if (glob->oldval<glob->val) {
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dec2(glob,glob->swapbuf1,glob->swapbuf2,3,a,glob->swapbuf2alt,c);
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} else {
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dec2(glob,glob->swapbuf1alt,glob->swapbuf2alt,3,a,glob->swapbuf2,c);
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}
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} else {
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if (c*2<(NBLOCKS-2)) {
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dec2(glob,glob->swapbuf1alt,glob->swapbuf2alt,3,glob->oldval,glob->swapbuf2,c);
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} else {
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dec2(glob,glob->swapbuf1,glob->swapbuf2,3,glob->val,glob->swapbuf2alt,c);
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}
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}
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}
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}
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/* do output */
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for (b=0,c=0;c<4;c++) {
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glob->gval=glob->gbuf1[c*2];
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glob->gsp=glob->gbuf2+b;
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do_output_subblock(glob,glob->resetflag);
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glob->resetflag=0;
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shptr=glob->output_buffer;
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while (shptr<glob->output_buffer+BLOCKSIZE) {
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s=*(shptr++)<<2;
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*target=s;
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if (s>32767) *target=32767;
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if (s<-32767) *target=-32768;
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target++;
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}
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b+=30;
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}
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glob->oldval=glob->val;
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temp=glob->swapbuf1alt;
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glob->swapbuf1alt=glob->swapbuf1;
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glob->swapbuf1=temp;
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temp=glob->swapbuf2alt;
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glob->swapbuf2alt=glob->swapbuf2;
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glob->swapbuf2=temp;
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}
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/* lookup square roots in table */
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static int t_sqrt(unsigned int x)
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{
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int s=0;
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while (x>0xfff) { s++; x=x>>2; }
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return (sqrt_table[x]<<s)<<2;
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}
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/* do 'voice' */
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static void do_voice(int *a1, int *a2)
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{
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int buffer[10];
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int *b1,*b2;
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int x,y;
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int *ptr,*tmp;
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b1=buffer;
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b2=a2;
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for (x=0;x<10;x++) {
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b1[x]=(*a1)<<4;
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if(x>0) {
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ptr=b2+x;
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for (y=0;y<=x-1;y++)
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b1[y]=(((*a1)*(*(--ptr)))>>12)+b2[y];
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}
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tmp=b1;
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b1=b2;
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b2=tmp;
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a1++;
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}
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ptr=a2+10;
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while (ptr>a2) (*a2++)>>=4;
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}
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/* do quarter-block output */
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static void do_output_subblock(Real_internal *glob, int x)
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{
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int a,b,c,d,e,f,g;
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if (x==1) memset(glob->buffer,0,20);
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if ((*glob->iptr)==0) a=0;
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else a=(*glob->iptr)+HALFBLOCK-1;
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glob->iptr++;
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b=*(glob->iptr++);
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c=*(glob->iptr++);
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d=*(glob->iptr++);
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if (a) rotate_block(glob->buffer_2,glob->buffer_a,a);
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memcpy(glob->buffer_b,etable1+b*BLOCKSIZE,BLOCKSIZE*2);
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e=((ftable1[b]>>4)*glob->gval)>>8;
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memcpy(glob->buffer_c,etable2+c*BLOCKSIZE,BLOCKSIZE*2);
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f=((ftable2[c]>>4)*glob->gval)>>8;
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if (a) g=irms(glob->buffer_a,glob->gval)>>12;
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else g=0;
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add_wav(glob,d,a,g,e,f,glob->buffer_a,glob->buffer_b,glob->buffer_c,glob->buffer_d);
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memmove(glob->buffer_2,glob->buffer_2+BLOCKSIZE,(BUFFERSIZE-BLOCKSIZE)*2);
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memcpy(glob->buffer_2+BUFFERSIZE-BLOCKSIZE,glob->buffer_d,BLOCKSIZE*2);
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final(glob,glob->gsp,glob->buffer_d,glob->output_buffer,glob->buffer,BLOCKSIZE);
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}
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/* rotate block */
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static void rotate_block(short *source, short *target, int offset)
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{
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short *end;
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short *ptr1;
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short *ptr2;
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short *ptr3;
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ptr2=source+BUFFERSIZE;
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ptr3=ptr1=ptr2-offset;
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end=target+BLOCKSIZE;
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while (target<end) {
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*(target++)=*(ptr3++);
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if (ptr3==ptr2) ptr3=ptr1;
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}
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}
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/* inverse root mean square */
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static int irms(short *data, int factor)
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{
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short *p1,*p2;
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unsigned int sum;
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p2=(p1=data)+BLOCKSIZE;
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for (sum=0;p2>p1;p1++) sum+=(*p1)*(*p1);
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if (sum==0) return 0; /* OOPS - division by zero */
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return (0x20000000/(t_sqrt(sum)>>8))*factor;
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}
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/* multiply/add wavetable */
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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)
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{
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int a,b,c;
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int x;
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short *ptr,*ptr2;
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ptr=glob->wavtable1+n*9;
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ptr2=glob->wavtable2+n*9;
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if (f!=0) {
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a=((*ptr)*m1)>>((*ptr2)+1);
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} else {
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a=0;
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}
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ptr++;ptr2++;
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b=((*ptr)*m2)>>((*ptr2)+1);
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ptr++;ptr2++;
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c=((*ptr)*m3)>>((*ptr2)+1);
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ptr2=(ptr=dest)+BLOCKSIZE;
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if (f!=0)
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while (ptr<ptr2)
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*(ptr++)=((*(s1++))*a+(*(s2++))*b+(*(s3++))*c)>>12;
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else
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while (ptr<ptr2)
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*(ptr++)=((*(s2++))*b+(*(s3++))*c)>>12;
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}
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static void final(Real_internal *glob, short *i1, short *i2, void *out, int *statbuf, int len)
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{
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int x,sum;
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int buffer[10];
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short *ptr;
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short *ptr2;
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memcpy(glob->work,statbuf,20);
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memcpy(glob->work+10,i2,len*2);
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buffer[9]=i1[0];
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buffer[8]=i1[1];
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buffer[7]=i1[2];
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buffer[6]=i1[3];
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buffer[5]=i1[4];
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buffer[4]=i1[5];
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buffer[3]=i1[6];
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buffer[2]=i1[7];
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buffer[1]=i1[8];
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buffer[0]=i1[9];
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ptr2=(ptr=glob->work)+len;
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while (ptr<ptr2) {
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for(sum=0,x=0;x<=9;x++)
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sum+=buffer[x]*(ptr[x]);
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sum=sum>>12;
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x=ptr[10]-sum;
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if (x<-32768 || x>32767)
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{
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memset(out,0,len*2);
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memset(statbuf,0,20);
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return;
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}
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ptr[10]=x;
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ptr++;
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}
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memcpy(out,ptr+10-len,len*2);
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memcpy(statbuf,ptr,20);
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}
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/* Decode 20-byte input */
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static void unpack_input(unsigned char *input, unsigned int *output)
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{
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unsigned int outbuffer[28];
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unsigned short inbuffer[10];
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unsigned int x;
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unsigned int *ptr;
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/* fix endianness */
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for (x=0;x<20;x+=2)
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inbuffer[x/2]=(input[x]<<8)+input[x+1];
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/* unpack */
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ptr=outbuffer;
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*(ptr++)=27;
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*(ptr++)=(inbuffer[0]>>10)&0x3f;
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*(ptr++)=(inbuffer[0]>>5)&0x1f;
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*(ptr++)=inbuffer[0]&0x1f;
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*(ptr++)=(inbuffer[1]>>12)&0xf;
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*(ptr++)=(inbuffer[1]>>8)&0xf;
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*(ptr++)=(inbuffer[1]>>5)&7;
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*(ptr++)=(inbuffer[1]>>2)&7;
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*(ptr++)=((inbuffer[1]<<1)&6)|((inbuffer[2]>>15)&1);
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*(ptr++)=(inbuffer[2]>>12)&7;
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*(ptr++)=(inbuffer[2]>>10)&3;
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*(ptr++)=(inbuffer[2]>>5)&0x1f;
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*(ptr++)=((inbuffer[2]<<2)&0x7c)|((inbuffer[3]>>14)&3);
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*(ptr++)=(inbuffer[3]>>6)&0xff;
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*(ptr++)=((inbuffer[3]<<1)&0x7e)|((inbuffer[4]>>15)&1);
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*(ptr++)=(inbuffer[4]>>8)&0x7f;
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*(ptr++)=(inbuffer[4]>>1)&0x7f;
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*(ptr++)=((inbuffer[4]<<7)&0x80)|((inbuffer[5]>>9)&0x7f);
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*(ptr++)=(inbuffer[5]>>2)&0x7f;
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*(ptr++)=((inbuffer[5]<<5)&0x60)|((inbuffer[6]>>11)&0x1f);
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*(ptr++)=(inbuffer[6]>>4)&0x7f;
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*(ptr++)=((inbuffer[6]<<4)&0xf0)|((inbuffer[7]>>12)&0xf);
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*(ptr++)=(inbuffer[7]>>5)&0x7f;
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*(ptr++)=((inbuffer[7]<<2)&0x7c)|((inbuffer[8]>>14)&3);
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*(ptr++)=(inbuffer[8]>>7)&0x7f;
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*(ptr++)=((inbuffer[8]<<1)&0xfe)|((inbuffer[9]>>15)&1);
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*(ptr++)=(inbuffer[9]>>8)&0x7f;
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*(ptr++)=(inbuffer[9]>>1)&0x7f;
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*(output++)=outbuffer[11];
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for (x=1;x<11;*(output++)=outbuffer[x++]);
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ptr=outbuffer+12;
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for (x=0;x<16;x+=4)
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{
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*(output++)=ptr[x];
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*(output++)=ptr[x+2];
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*(output++)=ptr[x+3];
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*(output++)=ptr[x+1];
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}
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}
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static unsigned int rms(int *data, int f)
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{
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int *c;
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int x;
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int d;
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unsigned int res;
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int b;
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c=data;
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b=0;
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res=0x10000;
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for (x=0;x<10;x++)
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{
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res=(((0x1000000-(*c)*(*c))>>12)*res)>>12;
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if (res==0) return 0;
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if (res<=0x3fff)
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{
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while (res<=0x3fff)
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{
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b++;
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res<<=2;
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}
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} else {
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if (res>0x10000)
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return 0; /* We're screwed, might as well go out with a bang. :P */
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}
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c++;
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}
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if (res>0) res=t_sqrt(res);
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res>>=(b+10);
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res=(res*f)>>10;
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return res;
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}
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static void dec1(Real_internal *glob, int *data, int *inp, int n, int f)
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{
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short *ptr,*end;
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*(glob->decptr++)=rms(data,f);
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glob->decptr++;
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end=(ptr=glob->decsp)+(n*10);
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while (ptr<end) *(ptr++)=*(inp++);
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}
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static void dec2(Real_internal *glob, int *data, int *inp, int n, int f, int *inp2, int l)
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{
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unsigned int *ptr1,*ptr2;
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int work[10];
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int a,b;
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int x;
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int result;
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if(l+1<NBLOCKS/2) a=NBLOCKS-(l+1);
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else a=l+1;
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b=NBLOCKS-a;
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if (l==0)
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{
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glob->decsp=glob->sptr=glob->gbuf2;
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glob->decptr=glob->gbuf1;
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}
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ptr1=inp;
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ptr2=inp2;
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for (x=0;x<10*n;x++)
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*(glob->sptr++)=(a*(*ptr1++)+b*(*ptr2++))>>2;
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result=eq(glob,glob->decsp,work);
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if (result==1)
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{
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dec1(glob,data,inp,n,f);
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} else {
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*(glob->decptr++)=rms(work,f);
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glob->decptr++;
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}
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glob->decsp+=n*10;
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}
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static int eq(Real_internal *glob, short *in, int *target)
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{
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int retval;
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int a;
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int b;
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int c;
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unsigned int u;
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short *sptr;
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int *ptr1,*ptr2,*ptr3;
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int *bp1,*bp2,*temp;
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retval=0;
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bp1=glob->buffer1;
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bp2=glob->buffer2;
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ptr2=(ptr3=glob->buffer2)+9;
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sptr=in;
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||||
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;
|
||||
}
|
||||
64
libmpcodecs/native/decode144.h
Normal file
64
libmpcodecs/native/decode144.h
Normal file
@ -0,0 +1,64 @@
|
||||
#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 */
|
||||
217
libmpcodecs/native/decode288.c
Normal file
217
libmpcodecs/native/decode288.c
Normal file
@ -0,0 +1,217 @@
|
||||
#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;
|
||||
}
|
||||
}
|
||||
27
libmpcodecs/native/decode288.h
Normal file
27
libmpcodecs/native/decode288.h
Normal file
@ -0,0 +1,27 @@
|
||||
#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 */
|
||||
2407
libmpcodecs/native/tables144.h
Normal file
2407
libmpcodecs/native/tables144.h
Normal file
File diff suppressed because it is too large
Load Diff
184
libmpcodecs/native/tables288.h
Normal file
184
libmpcodecs/native/tables288.h
Normal file
@ -0,0 +1,184 @@
|
||||
#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 */
|
||||
Loading…
Reference in New Issue
Block a user