mirror of
https://gerrit.asterisk.org/mp3
synced 2024-07-09 07:38:52 +01:00
Import mp3 lib used by format_mp3
git-svn-id: http://svn.digium.com/svn/thirdparty/mp3/trunk@180 dd19aba0-a6ef-428c-9d3a-61817a986440
This commit is contained in:
Russell Bryant
parent
a8ffd35068
commit
4f67a94bfe
14 changed files with 4012 additions and 0 deletions
39
MPGLIB_README
Normal file
39
MPGLIB_README
Normal file
|
|
@ -0,0 +1,39 @@
|
|||
MP3 library
|
||||
-----------
|
||||
Version 0.2
|
||||
|
||||
This decoder is a 'light' version (thrown out all unnecessay parts)
|
||||
from the mpg123 package. I made this for a company.
|
||||
|
||||
Currently only Layer3 is enabled to save some space. Layer1,2 isn't
|
||||
tested at all. The interface will not change significantly.
|
||||
A backport to the mpg123 package is planed.
|
||||
|
||||
comiled and tested only on Solaris 2.6
|
||||
main.c contains a simple demo application for library.
|
||||
|
||||
COPYING: you may use this source under GPL terms!
|
||||
|
||||
PLEASE NOTE: This software may contain patented alogrithm (at least
|
||||
patented in some countries). It may be not allowed to sell/use products
|
||||
based on this source code in these countries. Check this out first!
|
||||
|
||||
COPYRIGHT of MP3 music:
|
||||
Please note, that the duplicating of copyrighted music without explicit
|
||||
permission violates the rights of the owner.
|
||||
|
||||
SENDING PATCHES:
|
||||
Maybe I change the copyright policy (ie some kind of more free BSD licencse).
|
||||
Please consider this when sending patches/changes.
|
||||
I also want to have the freedom to sell the code to companies that
|
||||
can not use the code under GPL. So, if you send me significant patches,
|
||||
I need your explicit permission to do this. Of course, there will also
|
||||
be the GPLed open source version of the 100% same code.
|
||||
For the case you cannot accept this: the code is GPL, it's your freedom
|
||||
to distribute your changes again under GPL.
|
||||
|
||||
FEEDBACK:
|
||||
I'm interessted to here from you, when you use this package as part
|
||||
of another project.
|
||||
|
||||
|
||||
2
MPGLIB_TODO
Normal file
2
MPGLIB_TODO
Normal file
|
|
@ -0,0 +1,2 @@
|
|||
|
||||
apply 'VBR' bugfix
|
||||
24
Makefile
Normal file
24
Makefile
Normal file
|
|
@ -0,0 +1,24 @@
|
|||
MP3OBJS=common.o dct64_i386.o decode_ntom.o layer3.o tabinit.o interface.o
|
||||
|
||||
ifeq ($(OSARCH),FreeBSD)
|
||||
OSVERSION=$(shell make -V OSVERSION -f /usr/share/mk/bsd.port.subdir.mk)
|
||||
CFLAGS+=$(if $(OSVERSION)<500016,-D_THREAD_SAFE)
|
||||
LIBS+=$(if $(OSVERSION)<502102,-lc_r,-pthread)
|
||||
INCLUDE+=-I/usr/local/include
|
||||
CFLAGS+=$(shell if [ -d /usr/local/include/spandsp ]; then echo "-I/usr/local/include/spandsp"; fi)
|
||||
endif # FreeBSD
|
||||
|
||||
ifeq ($(OSARCH),NetBSD)
|
||||
CFLAGS+=-pthread
|
||||
INCLUDE+=-I/usr/local/include
|
||||
endif
|
||||
|
||||
ifeq ($(OSARCH),OpenBSD)
|
||||
CFLAGS+=-pthread
|
||||
endif
|
||||
|
||||
all: $(MP3OBJS)
|
||||
|
||||
clean:
|
||||
rm -f *.o *.so *~
|
||||
rm -f .*.o.d
|
||||
1
README
Normal file
1
README
Normal file
|
|
@ -0,0 +1 @@
|
|||
|
||||
267
common.c
Normal file
267
common.c
Normal file
|
|
@ -0,0 +1,267 @@
|
|||
#include "asterisk.h"
|
||||
#include "asterisk/logger.h"
|
||||
|
||||
#include <ctype.h>
|
||||
#include <stdlib.h>
|
||||
#include <signal.h>
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
#include <fcntl.h>
|
||||
|
||||
#include "mpg123.h"
|
||||
#include "mpglib.h"
|
||||
|
||||
struct parameter param = { 1 , 1 , 0 , 0 };
|
||||
|
||||
int tabsel_123[2][3][16] = {
|
||||
{ {0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,},
|
||||
{0,32,48,56, 64, 80, 96,112,128,160,192,224,256,320,384,},
|
||||
{0,32,40,48, 56, 64, 80, 96,112,128,160,192,224,256,320,} },
|
||||
|
||||
{ {0,32,48,56,64,80,96,112,128,144,160,176,192,224,256,},
|
||||
{0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,},
|
||||
{0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,} }
|
||||
};
|
||||
|
||||
long freqs[9] = { 44100, 48000, 32000,
|
||||
22050, 24000, 16000 ,
|
||||
11025 , 12000 , 8000 };
|
||||
|
||||
|
||||
#if 0
|
||||
static void get_II_stuff(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;
|
||||
}
|
||||
#endif
|
||||
|
||||
#define HDRCMPMASK 0xfffffd00
|
||||
|
||||
#if 0
|
||||
int head_check(unsigned long head)
|
||||
{
|
||||
if( (head & 0xffe00000) != 0xffe00000)
|
||||
return FALSE;
|
||||
if(!((head>>17)&3))
|
||||
return FALSE;
|
||||
if( ((head>>12)&0xf) == 0xf)
|
||||
return FALSE;
|
||||
if( ((head>>10)&0x3) == 0x3 )
|
||||
return FALSE;
|
||||
return TRUE;
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* the code a header and write the information
|
||||
* into the frame structure
|
||||
*/
|
||||
int decode_header(struct frame *fr,unsigned long newhead)
|
||||
{
|
||||
if( newhead & (1<<20) ) {
|
||||
fr->lsf = (newhead & (1<<19)) ? 0x0 : 0x1;
|
||||
fr->mpeg25 = 0;
|
||||
}
|
||||
else {
|
||||
fr->lsf = 1;
|
||||
fr->mpeg25 = 1;
|
||||
}
|
||||
|
||||
fr->lay = 4-((newhead>>17)&3);
|
||||
if( ((newhead>>10)&0x3) == 0x3) {
|
||||
ast_log(LOG_WARNING,"Stream error\n");
|
||||
return (0);
|
||||
}
|
||||
if(fr->mpeg25) {
|
||||
fr->sampling_frequency = 6 + ((newhead>>10)&0x3);
|
||||
}
|
||||
else
|
||||
fr->sampling_frequency = ((newhead>>10)&0x3) + (fr->lsf*3);
|
||||
fr->error_protection = ((newhead>>16)&0x1)^0x1;
|
||||
|
||||
if(fr->mpeg25) /* allow Bitrate change for 2.5 ... */
|
||||
fr->bitrate_index = ((newhead>>12)&0xf);
|
||||
|
||||
fr->bitrate_index = ((newhead>>12)&0xf);
|
||||
fr->padding = ((newhead>>9)&0x1);
|
||||
fr->extension = ((newhead>>8)&0x1);
|
||||
fr->mode = ((newhead>>6)&0x3);
|
||||
fr->mode_ext = ((newhead>>4)&0x3);
|
||||
fr->copyright = ((newhead>>3)&0x1);
|
||||
fr->original = ((newhead>>2)&0x1);
|
||||
fr->emphasis = newhead & 0x3;
|
||||
|
||||
fr->stereo = (fr->mode == MPG_MD_MONO) ? 1 : 2;
|
||||
|
||||
if(!fr->bitrate_index)
|
||||
{
|
||||
ast_log(LOG_WARNING,"Free format not supported.\n");
|
||||
return (0);
|
||||
}
|
||||
|
||||
switch(fr->lay)
|
||||
{
|
||||
case 1:
|
||||
#if 0
|
||||
fr->do_layer = do_layer1;
|
||||
fr->jsbound = (fr->mode == MPG_MD_JOINT_STEREO) ?
|
||||
(fr->mode_ext<<2)+4 : 32;
|
||||
fr->framesize = (long) tabsel_123[fr->lsf][0][fr->bitrate_index] * 12000;
|
||||
fr->framesize /= freqs[fr->sampling_frequency];
|
||||
fr->framesize = ((fr->framesize+fr->padding)<<2)-4;
|
||||
#else
|
||||
ast_log(LOG_WARNING,"Layer 1 not supported!\n");
|
||||
#endif
|
||||
break;
|
||||
case 2:
|
||||
#if 0
|
||||
fr->do_layer = do_layer2;
|
||||
get_II_stuff(fr);
|
||||
fr->jsbound = (fr->mode == MPG_MD_JOINT_STEREO) ?
|
||||
(fr->mode_ext<<2)+4 : fr->II_sblimit;
|
||||
fr->framesize = (long) tabsel_123[fr->lsf][1][fr->bitrate_index] * 144000;
|
||||
fr->framesize /= freqs[fr->sampling_frequency];
|
||||
fr->framesize += fr->padding - 4;
|
||||
#else
|
||||
ast_log(LOG_WARNING,"Layer 2 not supported!\n");
|
||||
#endif
|
||||
break;
|
||||
case 3:
|
||||
#if 0
|
||||
fr->do_layer = do_layer3;
|
||||
if(fr->lsf)
|
||||
ssize = (fr->stereo == 1) ? 9 : 17;
|
||||
else
|
||||
ssize = (fr->stereo == 1) ? 17 : 32;
|
||||
#endif
|
||||
|
||||
#if 0
|
||||
if(fr->error_protection)
|
||||
ssize += 2;
|
||||
#endif
|
||||
fr->framesize = (long) tabsel_123[fr->lsf][2][fr->bitrate_index] * 144000;
|
||||
fr->framesize /= freqs[fr->sampling_frequency]<<(fr->lsf);
|
||||
fr->framesize = fr->framesize + fr->padding - 4;
|
||||
break;
|
||||
default:
|
||||
ast_log(LOG_WARNING,"Sorry, unknown layer type.\n");
|
||||
return (0);
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
#if 0
|
||||
void print_header(struct frame *fr)
|
||||
{
|
||||
static char *modes[4] = { "Stereo", "Joint-Stereo", "Dual-Channel", "Single-Channel" };
|
||||
static char *layers[4] = { "Unknown" , "I", "II", "III" };
|
||||
|
||||
ast_log(LOG_WARNING,"MPEG %s, Layer: %s, Freq: %ld, mode: %s, modext: %d, BPF : %d\n",
|
||||
fr->mpeg25 ? "2.5" : (fr->lsf ? "2.0" : "1.0"),
|
||||
layers[fr->lay],freqs[fr->sampling_frequency],
|
||||
modes[fr->mode],fr->mode_ext,fr->framesize+4);
|
||||
ast_log(LOG_WARNING,"Channels: %d, copyright: %s, original: %s, CRC: %s, emphasis: %d.\n",
|
||||
fr->stereo,fr->copyright?"Yes":"No",
|
||||
fr->original?"Yes":"No",fr->error_protection?"Yes":"No",
|
||||
fr->emphasis);
|
||||
ast_log(LOG_WARNING,"Bitrate: %d Kbits/s, Extension value: %d\n",
|
||||
tabsel_123[fr->lsf][fr->lay-1][fr->bitrate_index],fr->extension);
|
||||
}
|
||||
|
||||
void print_header_compact(struct frame *fr)
|
||||
{
|
||||
static char *modes[4] = { "stereo", "joint-stereo", "dual-channel", "mono" };
|
||||
static char *layers[4] = { "Unknown" , "I", "II", "III" };
|
||||
|
||||
ast_log(LOG_WARNING,"MPEG %s layer %s, %d kbit/s, %ld Hz %s\n",
|
||||
fr->mpeg25 ? "2.5" : (fr->lsf ? "2.0" : "1.0"),
|
||||
layers[fr->lay],
|
||||
tabsel_123[fr->lsf][fr->lay-1][fr->bitrate_index],
|
||||
freqs[fr->sampling_frequency], modes[fr->mode]);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
unsigned int getbits(struct mpstr *mp, int number_of_bits)
|
||||
{
|
||||
unsigned long rval;
|
||||
|
||||
if(!number_of_bits)
|
||||
return 0;
|
||||
|
||||
{
|
||||
rval = (mp->worksample).wordpointer[0];
|
||||
rval <<= 8;
|
||||
rval |= (mp->worksample).wordpointer[1];
|
||||
rval <<= 8;
|
||||
rval |= (mp->worksample).wordpointer[2];
|
||||
rval <<= (mp->worksample).bitindex;
|
||||
rval &= 0xffffff;
|
||||
|
||||
(mp->worksample).bitindex += number_of_bits;
|
||||
|
||||
rval >>= (24-number_of_bits);
|
||||
|
||||
(mp->worksample).wordpointer += ((mp->worksample).bitindex>>3);
|
||||
(mp->worksample).bitindex &= 7;
|
||||
}
|
||||
return rval;
|
||||
}
|
||||
|
||||
unsigned int getbits_fast(struct mpstr *mp, int number_of_bits)
|
||||
{
|
||||
unsigned long rval;
|
||||
|
||||
{
|
||||
rval = (mp->worksample).wordpointer[0];
|
||||
rval <<= 8;
|
||||
rval |= (mp->worksample).wordpointer[1];
|
||||
rval <<= (mp->worksample).bitindex;
|
||||
rval &= 0xffff;
|
||||
(mp->worksample).bitindex += number_of_bits;
|
||||
|
||||
rval >>= (16-number_of_bits);
|
||||
|
||||
(mp->worksample).wordpointer += ((mp->worksample).bitindex>>3);
|
||||
(mp->worksample).bitindex &= 7;
|
||||
}
|
||||
return rval;
|
||||
}
|
||||
|
||||
unsigned int get1bit(struct mpstr *mp)
|
||||
{
|
||||
unsigned char rval;
|
||||
|
||||
rval = *((mp->worksample).wordpointer) << (mp->worksample).bitindex;
|
||||
|
||||
(mp->worksample).bitindex++;
|
||||
(mp->worksample).wordpointer += ((mp->worksample).bitindex>>3);
|
||||
(mp->worksample).bitindex &= 7;
|
||||
|
||||
return rval>>7;
|
||||
}
|
||||
|
||||
|
||||
|
||||
335
dct64_i386.c
Normal file
335
dct64_i386.c
Normal file
|
|
@ -0,0 +1,335 @@
|
|||
|
||||
/*
|
||||
* Discrete Cosine Tansform (DCT) for subband synthesis
|
||||
* optimized for machines with no auto-increment.
|
||||
* The performance is highly compiler dependend. Maybe
|
||||
* the dct64.c version for 'normal' processor may be faster
|
||||
* even for Intel processors.
|
||||
*/
|
||||
|
||||
#include "mpg123.h"
|
||||
|
||||
/*
|
||||
* the call via dct64 is a trick to force GCC to use
|
||||
* (new) registers for the b1,b2 pointer to the bufs[xx] field
|
||||
*/
|
||||
void dct64(real *a,real *b,real *c);
|
||||
|
||||
static void dct64_1(real *out0,real *out1,real *b1,real *b2,real *samples)
|
||||
{
|
||||
{
|
||||
register real *costab = pnts[0];
|
||||
|
||||
b1[0x00] = samples[0x00] + samples[0x1F];
|
||||
b1[0x01] = samples[0x01] + samples[0x1E];
|
||||
b1[0x1F] = (samples[0x00] - samples[0x1F]) * costab[0x0];
|
||||
b1[0x1E] = (samples[0x01] - samples[0x1E]) * costab[0x1];
|
||||
|
||||
b1[0x02] = samples[0x02] + samples[0x1D];
|
||||
b1[0x03] = samples[0x03] + samples[0x1C];
|
||||
b1[0x1D] = (samples[0x02] - samples[0x1D]) * costab[0x2];
|
||||
b1[0x1C] = (samples[0x03] - samples[0x1C]) * costab[0x3];
|
||||
|
||||
b1[0x04] = samples[0x04] + samples[0x1B];
|
||||
b1[0x05] = samples[0x05] + samples[0x1A];
|
||||
b1[0x1B] = (samples[0x04] - samples[0x1B]) * costab[0x4];
|
||||
b1[0x1A] = (samples[0x05] - samples[0x1A]) * costab[0x5];
|
||||
|
||||
b1[0x06] = samples[0x06] + samples[0x19];
|
||||
b1[0x07] = samples[0x07] + samples[0x18];
|
||||
b1[0x19] = (samples[0x06] - samples[0x19]) * costab[0x6];
|
||||
b1[0x18] = (samples[0x07] - samples[0x18]) * costab[0x7];
|
||||
|
||||
b1[0x08] = samples[0x08] + samples[0x17];
|
||||
b1[0x09] = samples[0x09] + samples[0x16];
|
||||
b1[0x17] = (samples[0x08] - samples[0x17]) * costab[0x8];
|
||||
b1[0x16] = (samples[0x09] - samples[0x16]) * costab[0x9];
|
||||
|
||||
b1[0x0A] = samples[0x0A] + samples[0x15];
|
||||
b1[0x0B] = samples[0x0B] + samples[0x14];
|
||||
b1[0x15] = (samples[0x0A] - samples[0x15]) * costab[0xA];
|
||||
b1[0x14] = (samples[0x0B] - samples[0x14]) * costab[0xB];
|
||||
|
||||
b1[0x0C] = samples[0x0C] + samples[0x13];
|
||||
b1[0x0D] = samples[0x0D] + samples[0x12];
|
||||
b1[0x13] = (samples[0x0C] - samples[0x13]) * costab[0xC];
|
||||
b1[0x12] = (samples[0x0D] - samples[0x12]) * costab[0xD];
|
||||
|
||||
b1[0x0E] = samples[0x0E] + samples[0x11];
|
||||
b1[0x0F] = samples[0x0F] + samples[0x10];
|
||||
b1[0x11] = (samples[0x0E] - samples[0x11]) * costab[0xE];
|
||||
b1[0x10] = (samples[0x0F] - samples[0x10]) * costab[0xF];
|
||||
|
||||
}
|
||||
|
||||
|
||||
{
|
||||
register real *costab = pnts[1];
|
||||
|
||||
b2[0x00] = b1[0x00] + b1[0x0F];
|
||||
b2[0x01] = b1[0x01] + b1[0x0E];
|
||||
b2[0x0F] = (b1[0x00] - b1[0x0F]) * costab[0];
|
||||
b2[0x0E] = (b1[0x01] - b1[0x0E]) * costab[1];
|
||||
|
||||
b2[0x02] = b1[0x02] + b1[0x0D];
|
||||
b2[0x03] = b1[0x03] + b1[0x0C];
|
||||
b2[0x0D] = (b1[0x02] - b1[0x0D]) * costab[2];
|
||||
b2[0x0C] = (b1[0x03] - b1[0x0C]) * costab[3];
|
||||
|
||||
b2[0x04] = b1[0x04] + b1[0x0B];
|
||||
b2[0x05] = b1[0x05] + b1[0x0A];
|
||||
b2[0x0B] = (b1[0x04] - b1[0x0B]) * costab[4];
|
||||
b2[0x0A] = (b1[0x05] - b1[0x0A]) * costab[5];
|
||||
|
||||
b2[0x06] = b1[0x06] + b1[0x09];
|
||||
b2[0x07] = b1[0x07] + b1[0x08];
|
||||
b2[0x09] = (b1[0x06] - b1[0x09]) * costab[6];
|
||||
b2[0x08] = (b1[0x07] - b1[0x08]) * costab[7];
|
||||
|
||||
/* */
|
||||
|
||||
b2[0x10] = b1[0x10] + b1[0x1F];
|
||||
b2[0x11] = b1[0x11] + b1[0x1E];
|
||||
b2[0x1F] = (b1[0x1F] - b1[0x10]) * costab[0];
|
||||
b2[0x1E] = (b1[0x1E] - b1[0x11]) * costab[1];
|
||||
|
||||
b2[0x12] = b1[0x12] + b1[0x1D];
|
||||
b2[0x13] = b1[0x13] + b1[0x1C];
|
||||
b2[0x1D] = (b1[0x1D] - b1[0x12]) * costab[2];
|
||||
b2[0x1C] = (b1[0x1C] - b1[0x13]) * costab[3];
|
||||
|
||||
b2[0x14] = b1[0x14] + b1[0x1B];
|
||||
b2[0x15] = b1[0x15] + b1[0x1A];
|
||||
b2[0x1B] = (b1[0x1B] - b1[0x14]) * costab[4];
|
||||
b2[0x1A] = (b1[0x1A] - b1[0x15]) * costab[5];
|
||||
|
||||
b2[0x16] = b1[0x16] + b1[0x19];
|
||||
b2[0x17] = b1[0x17] + b1[0x18];
|
||||
b2[0x19] = (b1[0x19] - b1[0x16]) * costab[6];
|
||||
b2[0x18] = (b1[0x18] - b1[0x17]) * costab[7];
|
||||
}
|
||||
|
||||
{
|
||||
register real *costab = pnts[2];
|
||||
|
||||
b1[0x00] = b2[0x00] + b2[0x07];
|
||||
b1[0x07] = (b2[0x00] - b2[0x07]) * costab[0];
|
||||
b1[0x01] = b2[0x01] + b2[0x06];
|
||||
b1[0x06] = (b2[0x01] - b2[0x06]) * costab[1];
|
||||
b1[0x02] = b2[0x02] + b2[0x05];
|
||||
b1[0x05] = (b2[0x02] - b2[0x05]) * costab[2];
|
||||
b1[0x03] = b2[0x03] + b2[0x04];
|
||||
b1[0x04] = (b2[0x03] - b2[0x04]) * costab[3];
|
||||
|
||||
b1[0x08] = b2[0x08] + b2[0x0F];
|
||||
b1[0x0F] = (b2[0x0F] - b2[0x08]) * costab[0];
|
||||
b1[0x09] = b2[0x09] + b2[0x0E];
|
||||
b1[0x0E] = (b2[0x0E] - b2[0x09]) * costab[1];
|
||||
b1[0x0A] = b2[0x0A] + b2[0x0D];
|
||||
b1[0x0D] = (b2[0x0D] - b2[0x0A]) * costab[2];
|
||||
b1[0x0B] = b2[0x0B] + b2[0x0C];
|
||||
b1[0x0C] = (b2[0x0C] - b2[0x0B]) * costab[3];
|
||||
|
||||
b1[0x10] = b2[0x10] + b2[0x17];
|
||||
b1[0x17] = (b2[0x10] - b2[0x17]) * costab[0];
|
||||
b1[0x11] = b2[0x11] + b2[0x16];
|
||||
b1[0x16] = (b2[0x11] - b2[0x16]) * costab[1];
|
||||
b1[0x12] = b2[0x12] + b2[0x15];
|
||||
b1[0x15] = (b2[0x12] - b2[0x15]) * costab[2];
|
||||
b1[0x13] = b2[0x13] + b2[0x14];
|
||||
b1[0x14] = (b2[0x13] - b2[0x14]) * costab[3];
|
||||
|
||||
b1[0x18] = b2[0x18] + b2[0x1F];
|
||||
b1[0x1F] = (b2[0x1F] - b2[0x18]) * costab[0];
|
||||
b1[0x19] = b2[0x19] + b2[0x1E];
|
||||
b1[0x1E] = (b2[0x1E] - b2[0x19]) * costab[1];
|
||||
b1[0x1A] = b2[0x1A] + b2[0x1D];
|
||||
b1[0x1D] = (b2[0x1D] - b2[0x1A]) * costab[2];
|
||||
b1[0x1B] = b2[0x1B] + b2[0x1C];
|
||||
b1[0x1C] = (b2[0x1C] - b2[0x1B]) * costab[3];
|
||||
}
|
||||
|
||||
{
|
||||
register real const cos0 = pnts[3][0];
|
||||
register real const cos1 = pnts[3][1];
|
||||
|
||||
b2[0x00] = b1[0x00] + b1[0x03];
|
||||
b2[0x03] = (b1[0x00] - b1[0x03]) * cos0;
|
||||
b2[0x01] = b1[0x01] + b1[0x02];
|
||||
b2[0x02] = (b1[0x01] - b1[0x02]) * cos1;
|
||||
|
||||
b2[0x04] = b1[0x04] + b1[0x07];
|
||||
b2[0x07] = (b1[0x07] - b1[0x04]) * cos0;
|
||||
b2[0x05] = b1[0x05] + b1[0x06];
|
||||
b2[0x06] = (b1[0x06] - b1[0x05]) * cos1;
|
||||
|
||||
b2[0x08] = b1[0x08] + b1[0x0B];
|
||||
b2[0x0B] = (b1[0x08] - b1[0x0B]) * cos0;
|
||||
b2[0x09] = b1[0x09] + b1[0x0A];
|
||||
b2[0x0A] = (b1[0x09] - b1[0x0A]) * cos1;
|
||||
|
||||
b2[0x0C] = b1[0x0C] + b1[0x0F];
|
||||
b2[0x0F] = (b1[0x0F] - b1[0x0C]) * cos0;
|
||||
b2[0x0D] = b1[0x0D] + b1[0x0E];
|
||||
b2[0x0E] = (b1[0x0E] - b1[0x0D]) * cos1;
|
||||
|
||||
b2[0x10] = b1[0x10] + b1[0x13];
|
||||
b2[0x13] = (b1[0x10] - b1[0x13]) * cos0;
|
||||
b2[0x11] = b1[0x11] + b1[0x12];
|
||||
b2[0x12] = (b1[0x11] - b1[0x12]) * cos1;
|
||||
|
||||
b2[0x14] = b1[0x14] + b1[0x17];
|
||||
b2[0x17] = (b1[0x17] - b1[0x14]) * cos0;
|
||||
b2[0x15] = b1[0x15] + b1[0x16];
|
||||
b2[0x16] = (b1[0x16] - b1[0x15]) * cos1;
|
||||
|
||||
b2[0x18] = b1[0x18] + b1[0x1B];
|
||||
b2[0x1B] = (b1[0x18] - b1[0x1B]) * cos0;
|
||||
b2[0x19] = b1[0x19] + b1[0x1A];
|
||||
b2[0x1A] = (b1[0x19] - b1[0x1A]) * cos1;
|
||||
|
||||
b2[0x1C] = b1[0x1C] + b1[0x1F];
|
||||
b2[0x1F] = (b1[0x1F] - b1[0x1C]) * cos0;
|
||||
b2[0x1D] = b1[0x1D] + b1[0x1E];
|
||||
b2[0x1E] = (b1[0x1E] - b1[0x1D]) * cos1;
|
||||
}
|
||||
|
||||
{
|
||||
register real const cos0 = pnts[4][0];
|
||||
|
||||
b1[0x00] = b2[0x00] + b2[0x01];
|
||||
b1[0x01] = (b2[0x00] - b2[0x01]) * cos0;
|
||||
b1[0x02] = b2[0x02] + b2[0x03];
|
||||
b1[0x03] = (b2[0x03] - b2[0x02]) * cos0;
|
||||
b1[0x02] += b1[0x03];
|
||||
|
||||
b1[0x04] = b2[0x04] + b2[0x05];
|
||||
b1[0x05] = (b2[0x04] - b2[0x05]) * cos0;
|
||||
b1[0x06] = b2[0x06] + b2[0x07];
|
||||
b1[0x07] = (b2[0x07] - b2[0x06]) * cos0;
|
||||
b1[0x06] += b1[0x07];
|
||||
b1[0x04] += b1[0x06];
|
||||
b1[0x06] += b1[0x05];
|
||||
b1[0x05] += b1[0x07];
|
||||
|
||||
b1[0x08] = b2[0x08] + b2[0x09];
|
||||
b1[0x09] = (b2[0x08] - b2[0x09]) * cos0;
|
||||
b1[0x0A] = b2[0x0A] + b2[0x0B];
|
||||
b1[0x0B] = (b2[0x0B] - b2[0x0A]) * cos0;
|
||||
b1[0x0A] += b1[0x0B];
|
||||
|
||||
b1[0x0C] = b2[0x0C] + b2[0x0D];
|
||||
b1[0x0D] = (b2[0x0C] - b2[0x0D]) * cos0;
|
||||
b1[0x0E] = b2[0x0E] + b2[0x0F];
|
||||
b1[0x0F] = (b2[0x0F] - b2[0x0E]) * cos0;
|
||||
b1[0x0E] += b1[0x0F];
|
||||
b1[0x0C] += b1[0x0E];
|
||||
b1[0x0E] += b1[0x0D];
|
||||
b1[0x0D] += b1[0x0F];
|
||||
|
||||
b1[0x10] = b2[0x10] + b2[0x11];
|
||||
b1[0x11] = (b2[0x10] - b2[0x11]) * cos0;
|
||||
b1[0x12] = b2[0x12] + b2[0x13];
|
||||
b1[0x13] = (b2[0x13] - b2[0x12]) * cos0;
|
||||
b1[0x12] += b1[0x13];
|
||||
|
||||
b1[0x14] = b2[0x14] + b2[0x15];
|
||||
b1[0x15] = (b2[0x14] - b2[0x15]) * cos0;
|
||||
b1[0x16] = b2[0x16] + b2[0x17];
|
||||
b1[0x17] = (b2[0x17] - b2[0x16]) * cos0;
|
||||
b1[0x16] += b1[0x17];
|
||||
b1[0x14] += b1[0x16];
|
||||
b1[0x16] += b1[0x15];
|
||||
b1[0x15] += b1[0x17];
|
||||
|
||||
b1[0x18] = b2[0x18] + b2[0x19];
|
||||
b1[0x19] = (b2[0x18] - b2[0x19]) * cos0;
|
||||
b1[0x1A] = b2[0x1A] + b2[0x1B];
|
||||
b1[0x1B] = (b2[0x1B] - b2[0x1A]) * cos0;
|
||||
b1[0x1A] += b1[0x1B];
|
||||
|
||||
b1[0x1C] = b2[0x1C] + b2[0x1D];
|
||||
b1[0x1D] = (b2[0x1C] - b2[0x1D]) * cos0;
|
||||
b1[0x1E] = b2[0x1E] + b2[0x1F];
|
||||
b1[0x1F] = (b2[0x1F] - b2[0x1E]) * cos0;
|
||||
b1[0x1E] += b1[0x1F];
|
||||
b1[0x1C] += b1[0x1E];
|
||||
b1[0x1E] += b1[0x1D];
|
||||
b1[0x1D] += b1[0x1F];
|
||||
}
|
||||
|
||||
out0[0x10*16] = b1[0x00];
|
||||
out0[0x10*12] = b1[0x04];
|
||||
out0[0x10* 8] = b1[0x02];
|
||||
out0[0x10* 4] = b1[0x06];
|
||||
out0[0x10* 0] = b1[0x01];
|
||||
out1[0x10* 0] = b1[0x01];
|
||||
out1[0x10* 4] = b1[0x05];
|
||||
out1[0x10* 8] = b1[0x03];
|
||||
out1[0x10*12] = b1[0x07];
|
||||
|
||||
#if 1
|
||||
out0[0x10*14] = b1[0x08] + b1[0x0C];
|
||||
out0[0x10*10] = b1[0x0C] + b1[0x0a];
|
||||
out0[0x10* 6] = b1[0x0A] + b1[0x0E];
|
||||
out0[0x10* 2] = b1[0x0E] + b1[0x09];
|
||||
out1[0x10* 2] = b1[0x09] + b1[0x0D];
|
||||
out1[0x10* 6] = b1[0x0D] + b1[0x0B];
|
||||
out1[0x10*10] = b1[0x0B] + b1[0x0F];
|
||||
out1[0x10*14] = b1[0x0F];
|
||||
#else
|
||||
b1[0x08] += b1[0x0C];
|
||||
out0[0x10*14] = b1[0x08];
|
||||
b1[0x0C] += b1[0x0a];
|
||||
out0[0x10*10] = b1[0x0C];
|
||||
b1[0x0A] += b1[0x0E];
|
||||
out0[0x10* 6] = b1[0x0A];
|
||||
b1[0x0E] += b1[0x09];
|
||||
out0[0x10* 2] = b1[0x0E];
|
||||
b1[0x09] += b1[0x0D];
|
||||
out1[0x10* 2] = b1[0x09];
|
||||
b1[0x0D] += b1[0x0B];
|
||||
out1[0x10* 6] = b1[0x0D];
|
||||
b1[0x0B] += b1[0x0F];
|
||||
out1[0x10*10] = b1[0x0B];
|
||||
out1[0x10*14] = b1[0x0F];
|
||||
#endif
|
||||
|
||||
{
|
||||
real tmp;
|
||||
tmp = b1[0x18] + b1[0x1C];
|
||||
out0[0x10*15] = tmp + b1[0x10];
|
||||
out0[0x10*13] = tmp + b1[0x14];
|
||||
tmp = b1[0x1C] + b1[0x1A];
|
||||
out0[0x10*11] = tmp + b1[0x14];
|
||||
out0[0x10* 9] = tmp + b1[0x12];
|
||||
tmp = b1[0x1A] + b1[0x1E];
|
||||
out0[0x10* 7] = tmp + b1[0x12];
|
||||
out0[0x10* 5] = tmp + b1[0x16];
|
||||
tmp = b1[0x1E] + b1[0x19];
|
||||
out0[0x10* 3] = tmp + b1[0x16];
|
||||
out0[0x10* 1] = tmp + b1[0x11];
|
||||
tmp = b1[0x19] + b1[0x1D];
|
||||
out1[0x10* 1] = tmp + b1[0x11];
|
||||
out1[0x10* 3] = tmp + b1[0x15];
|
||||
tmp = b1[0x1D] + b1[0x1B];
|
||||
out1[0x10* 5] = tmp + b1[0x15];
|
||||
out1[0x10* 7] = tmp + b1[0x13];
|
||||
tmp = b1[0x1B] + b1[0x1F];
|
||||
out1[0x10* 9] = tmp + b1[0x13];
|
||||
out1[0x10*11] = tmp + b1[0x17];
|
||||
out1[0x10*13] = b1[0x17] + b1[0x1F];
|
||||
out1[0x10*15] = b1[0x1F];
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* the call via dct64 is a trick to force GCC to use
|
||||
* (new) registers for the b1,b2 pointer to the bufs[xx] field
|
||||
*/
|
||||
void dct64(real *a,real *b,real *c)
|
||||
{
|
||||
real bufs[0x40];
|
||||
dct64_1(a,b,bufs,bufs+0x20,c);
|
||||
}
|
||||
|
||||
153
decode_i386.c
Normal file
153
decode_i386.c
Normal file
|
|
@ -0,0 +1,153 @@
|
|||
/*
|
||||
* Mpeg Layer-1,2,3 audio decoder
|
||||
* ------------------------------
|
||||
* copyright (c) 1995,1996,1997 by Michael Hipp, All rights reserved.
|
||||
* See also 'README'
|
||||
*
|
||||
* slighlty optimized for machines without autoincrement/decrement.
|
||||
* The performance is highly compiler dependend. Maybe
|
||||
* the decode.c version for 'normal' processor may be faster
|
||||
* even for Intel processors.
|
||||
*/
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <math.h>
|
||||
#include <string.h>
|
||||
|
||||
|
||||
#include "mpglib.h"
|
||||
|
||||
|
||||
|
||||
/* old WRITE_SAMPLE */
|
||||
#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_mono(struct mpstr *mp,real *bandPtr,unsigned char *samples,int *pnt)
|
||||
{
|
||||
short samples_tmp[64];
|
||||
short *tmp1 = samples_tmp;
|
||||
int i,ret;
|
||||
int pnt1 = 0;
|
||||
|
||||
ret = synth_1to1(mp,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(struct mpstr *mp, real *bandPtr,int channel,unsigned char *out,int *pnt)
|
||||
{
|
||||
static const int step = 2;
|
||||
int bo;
|
||||
short *samples = (short *) (out + *pnt);
|
||||
|
||||
real *b0,(*buf)[0x110];
|
||||
int clip = 0;
|
||||
int bo1;
|
||||
|
||||
bo = mp->synth_bo;
|
||||
|
||||
if(!channel) {
|
||||
bo--;
|
||||
bo &= 0xf;
|
||||
buf = mp->synth_buffs[0];
|
||||
}
|
||||
else {
|
||||
samples++;
|
||||
buf = mp->synth_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);
|
||||
}
|
||||
|
||||
mp->synth_bo = bo;
|
||||
|
||||
{
|
||||
register int j;
|
||||
real *window = decwin + 16 - bo1;
|
||||
|
||||
for (j=16;j;j--,b0+=0x10,window+=0x20,samples+=step)
|
||||
{
|
||||
real sum;
|
||||
sum = window[0x0] * b0[0x0];
|
||||
sum -= window[0x1] * b0[0x1];
|
||||
sum += window[0x2] * b0[0x2];
|
||||
sum -= window[0x3] * b0[0x3];
|
||||
sum += window[0x4] * b0[0x4];
|
||||
sum -= window[0x5] * b0[0x5];
|
||||
sum += window[0x6] * b0[0x6];
|
||||
sum -= window[0x7] * b0[0x7];
|
||||
sum += window[0x8] * b0[0x8];
|
||||
sum -= window[0x9] * b0[0x9];
|
||||
sum += window[0xA] * b0[0xA];
|
||||
sum -= window[0xB] * b0[0xB];
|
||||
sum += window[0xC] * b0[0xC];
|
||||
sum -= window[0xD] * b0[0xD];
|
||||
sum += window[0xE] * b0[0xE];
|
||||
sum -= window[0xF] * b0[0xF];
|
||||
|
||||
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-=0x10,window-=0x20,samples+=step)
|
||||
{
|
||||
real sum;
|
||||
sum = -window[-0x1] * b0[0x0];
|
||||
sum -= window[-0x2] * b0[0x1];
|
||||
sum -= window[-0x3] * b0[0x2];
|
||||
sum -= window[-0x4] * b0[0x3];
|
||||
sum -= window[-0x5] * b0[0x4];
|
||||
sum -= window[-0x6] * b0[0x5];
|
||||
sum -= window[-0x7] * b0[0x6];
|
||||
sum -= window[-0x8] * b0[0x7];
|
||||
sum -= window[-0x9] * b0[0x8];
|
||||
sum -= window[-0xA] * b0[0x9];
|
||||
sum -= window[-0xB] * b0[0xA];
|
||||
sum -= window[-0xC] * b0[0xB];
|
||||
sum -= window[-0xD] * b0[0xC];
|
||||
sum -= window[-0xE] * b0[0xD];
|
||||
sum -= window[-0xF] * b0[0xE];
|
||||
sum -= window[-0x0] * b0[0xF];
|
||||
|
||||
WRITE_SAMPLE(samples,sum,clip);
|
||||
}
|
||||
}
|
||||
*pnt += 128;
|
||||
|
||||
return clip;
|
||||
}
|
||||
|
||||
219
decode_ntom.c
Normal file
219
decode_ntom.c
Normal file
|
|
@ -0,0 +1,219 @@
|
|||
/*
|
||||
* 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 "asterisk.h"
|
||||
#include "asterisk/logger.h"
|
||||
#include <stdlib.h>
|
||||
#include <math.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "mpg123.h"
|
||||
#include "mpglib.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;
|
||||
|
||||
|
||||
int synth_ntom_set_step(long m,long n)
|
||||
{
|
||||
if(param.verbose > 1)
|
||||
ast_log(LOG_WARNING,"Init rate converter: %ld->%ld\n",m,n);
|
||||
|
||||
if(n >= 96000 || m >= 96000 || m == 0 || n == 0) {
|
||||
ast_log(LOG_WARNING,"NtoM converter: illegal rates\n");
|
||||
return (1);
|
||||
}
|
||||
|
||||
n *= NTOM_MUL;
|
||||
ntom_step = n / m;
|
||||
|
||||
if(ntom_step > 8*NTOM_MUL) {
|
||||
ast_log(LOG_WARNING,"max. 1:8 conversion allowed!\n");
|
||||
return (1);
|
||||
}
|
||||
|
||||
ntom_val[0] = ntom_val[1] = NTOM_MUL>>1;
|
||||
|
||||
return (0);
|
||||
|
||||
}
|
||||
|
||||
|
||||
int synth_ntom_mono (struct mpstr *mp, 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(mp, 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(struct mpstr *mp, real *bandPtr,int channel,unsigned char *out,int *pnt)
|
||||
{
|
||||
static const int step = 2;
|
||||
int bo;
|
||||
short *samples = (short *) (out + *pnt);
|
||||
|
||||
real *b0,(*buf)[0x110];
|
||||
int clip = 0;
|
||||
int bo1;
|
||||
int ntom;
|
||||
|
||||
bo = mp->synth_bo;
|
||||
|
||||
if(!channel) {
|
||||
bo--;
|
||||
bo &= 0xf;
|
||||
buf = mp->synth_buffs[0];
|
||||
ntom = ntom_val[1] = ntom_val[0];
|
||||
}
|
||||
else {
|
||||
samples++;
|
||||
out += 2; /* to compute the right *pnt value */
|
||||
buf = mp->synth_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);
|
||||
}
|
||||
|
||||
mp->synth_bo = bo;
|
||||
|
||||
{
|
||||
register int j;
|
||||
real *window = (mp->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
huffman.h
Normal file
332
huffman.h
Normal 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 }
|
||||
};
|
||||
|
||||
|
||||
323
interface.c
Normal file
323
interface.c
Normal file
|
|
@ -0,0 +1,323 @@
|
|||
#include "asterisk.h"
|
||||
#include "asterisk/logger.h"
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#include "mpg123.h"
|
||||
#include "mpglib.h"
|
||||
|
||||
|
||||
void InitMP3Constants(void)
|
||||
{
|
||||
init_layer3_const();
|
||||
make_decode_tables_const();
|
||||
|
||||
}
|
||||
|
||||
|
||||
BOOL InitMP3(struct mpstr *mp, long outscale)
|
||||
{
|
||||
/* quiet 4096 med 8192 */
|
||||
|
||||
memset(mp,0,sizeof(struct mpstr));
|
||||
|
||||
mp->framesize = 0;
|
||||
mp->fsizeold = -1;
|
||||
mp->bsize = 0;
|
||||
mp->head = mp->tail = NULL;
|
||||
mp->fr.single = 3; /* force mono */
|
||||
mp->bsnum = 0;
|
||||
mp->synth_bo = 1;
|
||||
mp->outsamplerate = 8000;
|
||||
|
||||
make_decode_tables_scale(mp, outscale);
|
||||
|
||||
init_layer3_sample_limits(mp, SBLIMIT);
|
||||
|
||||
return !0;
|
||||
}
|
||||
|
||||
void ExitMP3(struct mpstr *mp)
|
||||
{
|
||||
struct buf *b,*bn;
|
||||
|
||||
b = mp->tail;
|
||||
while(b) {
|
||||
free(b->pnt);
|
||||
bn = b->next;
|
||||
free(b);
|
||||
b = bn;
|
||||
}
|
||||
}
|
||||
|
||||
static struct buf *addbuf(struct mpstr *mp,char *buf,int size)
|
||||
{
|
||||
struct buf *nbuf;
|
||||
|
||||
nbuf = malloc( sizeof(struct buf) );
|
||||
if(!nbuf) {
|
||||
ast_log(LOG_WARNING,"Out of memory!\n");
|
||||
return NULL;
|
||||
}
|
||||
nbuf->pnt = malloc(size);
|
||||
if(!nbuf->pnt) {
|
||||
free(nbuf);
|
||||
return NULL;
|
||||
}
|
||||
nbuf->size = size;
|
||||
memcpy(nbuf->pnt,buf,size);
|
||||
nbuf->next = NULL;
|
||||
nbuf->prev = mp->head;
|
||||
nbuf->pos = 0;
|
||||
|
||||
if(!mp->tail) {
|
||||
mp->tail = nbuf;
|
||||
}
|
||||
else {
|
||||
mp->head->next = nbuf;
|
||||
}
|
||||
|
||||
mp->head = nbuf;
|
||||
mp->bsize += size;
|
||||
|
||||
return nbuf;
|
||||
}
|
||||
|
||||
static void remove_buf(struct mpstr *mp)
|
||||
{
|
||||
struct buf *buf = mp->tail;
|
||||
|
||||
mp->tail = buf->next;
|
||||
if(mp->tail)
|
||||
mp->tail->prev = NULL;
|
||||
else {
|
||||
mp->tail = mp->head = NULL;
|
||||
}
|
||||
|
||||
free(buf->pnt);
|
||||
free(buf);
|
||||
|
||||
}
|
||||
|
||||
static int read_buf_byte(int *error, struct mpstr *mp)
|
||||
{
|
||||
unsigned int b;int pos;
|
||||
|
||||
pos = mp->tail->pos;
|
||||
while(pos >= mp->tail->size) {
|
||||
remove_buf(mp);
|
||||
pos = mp->tail->pos;
|
||||
if(!mp->tail) {
|
||||
/* We may pick up this error a few times*/
|
||||
/* But things have gone pear shaped */
|
||||
ast_log(LOG_WARNING,"Fatal Buffer error!\n");
|
||||
*error = 1;
|
||||
return (0);
|
||||
}
|
||||
}
|
||||
|
||||
b = mp->tail->pnt[pos];
|
||||
mp->bsize--;
|
||||
mp->tail->pos++;
|
||||
|
||||
|
||||
return b;
|
||||
}
|
||||
|
||||
static int read_head(struct mpstr *mp)
|
||||
{
|
||||
unsigned long head;
|
||||
int error=0;
|
||||
|
||||
|
||||
head = read_buf_byte(&error, mp);
|
||||
head <<= 8;
|
||||
head |= read_buf_byte(&error, mp);
|
||||
head <<= 8;
|
||||
head |= read_buf_byte(&error, mp);
|
||||
head <<= 8;
|
||||
head |= read_buf_byte(&error, mp);
|
||||
|
||||
mp->header = head;
|
||||
|
||||
if(error){
|
||||
return (1);
|
||||
}else
|
||||
return (0);
|
||||
|
||||
}
|
||||
|
||||
static int head_check(unsigned long head)
|
||||
{
|
||||
if( (head & 0xffe00000) != 0xffe00000)
|
||||
return FALSE;
|
||||
if(!((head>>17)&3))
|
||||
return FALSE;
|
||||
if( ((head>>12)&0xf) == 0xf || ((head>>12)&0xf) == 0)
|
||||
return FALSE;
|
||||
if( ((head>>10)&0x3) == 0x3 )
|
||||
return FALSE;
|
||||
if ((head & 0xffff0000) == 0xfffe0000)
|
||||
return FALSE;
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static int head_shift(struct mpstr *mp)
|
||||
{
|
||||
unsigned long head;
|
||||
int error = 0;
|
||||
|
||||
head = mp->header;
|
||||
|
||||
head <<= 8;
|
||||
head |= read_buf_byte(&error, mp);
|
||||
|
||||
mp->header = head;
|
||||
|
||||
if (error){
|
||||
return (1);
|
||||
}else
|
||||
return (0);
|
||||
|
||||
}
|
||||
|
||||
|
||||
int decodeMP3(struct mpstr *mp,char *in,int isize,char *out,
|
||||
int osize,int *done)
|
||||
{
|
||||
int len;
|
||||
long n,m;
|
||||
int down_sample_sblimit;
|
||||
|
||||
if(osize < 4608) {
|
||||
ast_log(LOG_WARNING,"To less out space\n");
|
||||
return MP3_ERR;
|
||||
}
|
||||
|
||||
if(in) {
|
||||
if(addbuf(mp,in,isize) == NULL) {
|
||||
return MP3_ERR;
|
||||
}
|
||||
}
|
||||
|
||||
/* First decode header */
|
||||
if(mp->framesize == 0) {
|
||||
if(mp->bsize < 4) {
|
||||
return MP3_NEED_MORE;
|
||||
}
|
||||
if (read_head(mp))
|
||||
return MP3_ERR;
|
||||
|
||||
if(!head_check(mp->header) ) {
|
||||
int i;
|
||||
|
||||
ast_log(LOG_WARNING,"Junk at the beginning of frame %08lx\n",mp->header);
|
||||
|
||||
/* step in byte steps through next 64K */
|
||||
for(i=0;i<65536;i++) {
|
||||
if(!mp->bsize)
|
||||
return MP3_NEED_MORE;
|
||||
|
||||
if(head_shift(mp))
|
||||
return MP3_ERR;
|
||||
|
||||
if(head_check(mp->header))
|
||||
break;
|
||||
}
|
||||
if(i == 65536) {
|
||||
ast_log(LOG_WARNING,"Giving up searching valid MPEG header\n");
|
||||
return MP3_ERR;
|
||||
}
|
||||
}
|
||||
|
||||
decode_header(&mp->fr,mp->header);
|
||||
mp->framesize = mp->fr.framesize;
|
||||
|
||||
if (!mp->initmp3){
|
||||
mp->initmp3 = 1;
|
||||
|
||||
n = freqs[mp->fr.sampling_frequency];
|
||||
if (mp->outsamplerate) {
|
||||
m = mp->outsamplerate;
|
||||
}
|
||||
else {
|
||||
m =n;
|
||||
}
|
||||
|
||||
if (synth_ntom_set_step(n,m))
|
||||
return MP3_ERR;
|
||||
|
||||
|
||||
if(n>m) {
|
||||
down_sample_sblimit = SBLIMIT * m;
|
||||
down_sample_sblimit /= n;
|
||||
}
|
||||
else {
|
||||
down_sample_sblimit = SBLIMIT;
|
||||
}
|
||||
|
||||
init_layer3_sample_limits(mp, down_sample_sblimit);
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
if(mp->fr.framesize > mp->bsize)
|
||||
return MP3_NEED_MORE;
|
||||
|
||||
(mp->worksample).wordpointer = mp->bsspace[mp->bsnum] + 512;
|
||||
mp->bsnum = (mp->bsnum + 1) & 0x1;
|
||||
(mp->worksample).bitindex = 0;
|
||||
|
||||
len = 0;
|
||||
while(len < mp->framesize) {
|
||||
int nlen;
|
||||
int blen = mp->tail->size - mp->tail->pos;
|
||||
if( (mp->framesize - len) <= blen) {
|
||||
nlen = mp->framesize-len;
|
||||
}
|
||||
else {
|
||||
nlen = blen;
|
||||
}
|
||||
memcpy((mp->worksample).wordpointer+len,mp->tail->pnt+mp->tail->pos,nlen);
|
||||
len += nlen;
|
||||
mp->tail->pos += nlen;
|
||||
mp->bsize -= nlen;
|
||||
if(mp->tail->pos == mp->tail->size) {
|
||||
remove_buf(mp);
|
||||
}
|
||||
}
|
||||
|
||||
*done = 0;
|
||||
if(mp->fr.error_protection)
|
||||
getbits(mp, 16);
|
||||
|
||||
if (do_layer3(mp,(unsigned char *) out,done))
|
||||
return MP3_ERR;
|
||||
|
||||
mp->fsizeold = mp->framesize;
|
||||
mp->framesize = 0;
|
||||
|
||||
return MP3_OK;
|
||||
}
|
||||
|
||||
int set_pointer(struct mpstr *mp, long backstep)
|
||||
{
|
||||
unsigned char *bsbufold;
|
||||
if(mp->fsizeold < 0 && backstep > 0) {
|
||||
ast_log(LOG_WARNING,"Can't step back %ld!\n",backstep);
|
||||
return MP3_ERR;
|
||||
}
|
||||
bsbufold = mp->bsspace[mp->bsnum] + 512;
|
||||
(mp->worksample).wordpointer -= backstep;
|
||||
if (backstep)
|
||||
memcpy((mp->worksample).wordpointer,bsbufold+mp->fsizeold-backstep,backstep);
|
||||
(mp->worksample).bitindex = 0;
|
||||
return MP3_OK;
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
132
mpg123.h
Normal file
132
mpg123.h
Normal file
|
|
@ -0,0 +1,132 @@
|
|||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <signal.h>
|
||||
|
||||
#ifndef WIN32
|
||||
#include <sys/signal.h>
|
||||
#include <unistd.h>
|
||||
#endif
|
||||
|
||||
#include <math.h>
|
||||
|
||||
#ifdef _WIN32
|
||||
# undef WIN32
|
||||
# define WIN32
|
||||
|
||||
# define M_PI 3.14159265358979323846
|
||||
# define M_SQRT2 1.41421356237309504880
|
||||
# define REAL_IS_FLOAT
|
||||
# define NEW_DCT9
|
||||
|
||||
# define random rand
|
||||
# define srandom srand
|
||||
|
||||
#endif
|
||||
|
||||
#ifdef REAL_IS_FLOAT
|
||||
# define real float
|
||||
#elif defined(REAL_IS_LONG_DOUBLE)
|
||||
# define real long double
|
||||
#else
|
||||
# define real double
|
||||
#endif
|
||||
|
||||
#ifdef __GNUC__
|
||||
#define INLINE inline
|
||||
#else
|
||||
#define INLINE
|
||||
#endif
|
||||
|
||||
/* AUDIOBUFSIZE = n*64 with n=1,2,3 ... */
|
||||
#define AUDIOBUFSIZE 16384
|
||||
|
||||
#define FALSE 0
|
||||
#define TRUE 1
|
||||
|
||||
#define SBLIMIT 32
|
||||
#define SSLIMIT 18
|
||||
|
||||
#define MPG_MD_STEREO 0
|
||||
#define MPG_MD_JOINT_STEREO 1
|
||||
#define MPG_MD_DUAL_CHANNEL 2
|
||||
#define MPG_MD_MONO 3
|
||||
|
||||
#define MAXFRAMESIZE 1792
|
||||
|
||||
|
||||
/* Pre Shift fo 16 to 8 bit converter table */
|
||||
#define AUSHIFT (3)
|
||||
|
||||
struct frame {
|
||||
int stereo;
|
||||
int jsbound;
|
||||
int single;
|
||||
int lsf;
|
||||
int mpeg25;
|
||||
int header_change;
|
||||
int lay;
|
||||
int error_protection;
|
||||
int bitrate_index;
|
||||
int sampling_frequency;
|
||||
int padding;
|
||||
int extension;
|
||||
int mode;
|
||||
int mode_ext;
|
||||
int copyright;
|
||||
int original;
|
||||
int emphasis;
|
||||
int framesize; /* computed framesize */
|
||||
};
|
||||
|
||||
struct parameter {
|
||||
int quiet; /* shut up! */
|
||||
int tryresync; /* resync stream after error */
|
||||
int verbose; /* verbose level */
|
||||
int checkrange;
|
||||
};
|
||||
|
||||
extern int decode_header(struct frame *fr,unsigned long newhead);
|
||||
|
||||
|
||||
|
||||
struct gr_info_s {
|
||||
int scfsi;
|
||||
unsigned part2_3_length;
|
||||
unsigned big_values;
|
||||
unsigned scalefac_compress;
|
||||
unsigned block_type;
|
||||
unsigned mixed_block_flag;
|
||||
unsigned table_select[3];
|
||||
unsigned subblock_gain[3];
|
||||
unsigned maxband[3];
|
||||
unsigned maxbandl;
|
||||
unsigned maxb;
|
||||
unsigned region1start;
|
||||
unsigned region2start;
|
||||
unsigned preflag;
|
||||
unsigned scalefac_scale;
|
||||
unsigned count1table_select;
|
||||
real *full_gain[3];
|
||||
real *pow2gain;
|
||||
};
|
||||
|
||||
struct III_sideinfo
|
||||
{
|
||||
unsigned main_data_begin;
|
||||
unsigned private_bits;
|
||||
struct {
|
||||
struct gr_info_s gr[2];
|
||||
} ch[2];
|
||||
};
|
||||
|
||||
struct pcm_workingsample
|
||||
{
|
||||
int bitindex;
|
||||
unsigned char *wordpointer;
|
||||
};
|
||||
|
||||
|
||||
extern long freqs[9];
|
||||
extern struct parameter param;
|
||||
extern real *pnts[5];
|
||||
|
||||
75
mpglib.h
Normal file
75
mpglib.h
Normal file
|
|
@ -0,0 +1,75 @@
|
|||
|
||||
struct buf {
|
||||
unsigned char *pnt;
|
||||
long size;
|
||||
long pos;
|
||||
struct buf *next;
|
||||
struct buf *prev;
|
||||
};
|
||||
|
||||
struct framebuf {
|
||||
struct buf *buf;
|
||||
long pos;
|
||||
struct frame *next;
|
||||
struct frame *prev;
|
||||
};
|
||||
|
||||
struct mpstr {
|
||||
struct buf *head,*tail;
|
||||
int bsize;
|
||||
int framesize;
|
||||
int fsizeold;
|
||||
struct frame fr;
|
||||
unsigned char bsspace[2][MAXFRAMESIZE+512]; /* MAXFRAMESIZE */
|
||||
real hybrid_block[2][2][SBLIMIT*SSLIMIT];
|
||||
int hybrid_blc[2];
|
||||
unsigned long header;
|
||||
int bsnum;
|
||||
real synth_buffs[2][2][0x110];
|
||||
int synth_bo;
|
||||
long outscale; /* volume control default value 32768 */
|
||||
long outsamplerate; /* raw output rate default same as mp3 sample rate*/
|
||||
struct pcm_workingsample worksample; /* keep the state of the working sample for threads */
|
||||
int initmp3; /* flag for first initialisation */
|
||||
int longLimit[9][23]; /*sample limits re setting volume */
|
||||
int shortLimit[9][14];
|
||||
real decwin[512+32]; /* scale table */
|
||||
|
||||
};
|
||||
|
||||
#define BOOL int
|
||||
|
||||
#define MP3_ERR -1
|
||||
#define MP3_OK 0
|
||||
#define MP3_NEED_MORE 1
|
||||
|
||||
|
||||
void InitMP3Constants(void);
|
||||
BOOL InitMP3(struct mpstr *mp, long outscale);
|
||||
int decodeMP3(struct mpstr *mp,char *inmemory,int inmemsize,
|
||||
char *outmemory,int outmemsize,int *done);
|
||||
void ExitMP3(struct mpstr *mp);
|
||||
|
||||
extern int synth_ntom_set_step(long,long);
|
||||
extern int synth_ntom(struct mpstr *mp, real *bandPtr,int channel,unsigned char *out,int *pnt);
|
||||
extern int synth_ntom_mono (struct mpstr *mp, real *bandPtr,unsigned char *samples,int *pnt);
|
||||
extern int synth_ntom_8bit (real *,int,unsigned char *,int *);
|
||||
extern int synth_ntom_mono2stereo (real *,unsigned char *,int *);
|
||||
extern int synth_ntom_8bit_mono (real *,unsigned char *,int *);
|
||||
extern int synth_ntom_8bit_mono2stereo (real *,unsigned char *,int *);
|
||||
|
||||
extern void init_layer3_sample_limits(struct mpstr *mp, int down_sample_sblimit);
|
||||
extern void init_layer3_const(void);
|
||||
extern int do_layer3(struct mpstr *mp,unsigned char *,int *);
|
||||
|
||||
extern void make_decode_tables_scale(struct mpstr *mp, long scaleval);
|
||||
extern void make_decode_tables_const(void);
|
||||
extern void make_conv16to8_table(int);
|
||||
|
||||
extern void dct64(real *,real *,real *);
|
||||
|
||||
extern unsigned int get1bit(struct mpstr *mp);
|
||||
extern unsigned int getbits(struct mpstr *mp, int);
|
||||
extern unsigned int getbits_fast(struct mpstr *mp, int);
|
||||
extern int set_pointer(struct mpstr *mp, long backstep);
|
||||
|
||||
81
tabinit.c
Normal file
81
tabinit.c
Normal file
|
|
@ -0,0 +1,81 @@
|
|||
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "mpg123.h"
|
||||
#include "mpglib.h"
|
||||
|
||||
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_const(void)
|
||||
{
|
||||
int i,k,kr,divv;
|
||||
real *costab;
|
||||
|
||||
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));
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
void make_decode_tables_scale(struct mpstr *mp, long scaleval)
|
||||
{
|
||||
int i,j;
|
||||
real *table;
|
||||
|
||||
table = mp->decwin;
|
||||
scaleval = -scaleval;
|
||||
for(i=0,j=0;i<256;i++,j++,table+=32)
|
||||
{
|
||||
if(table < (mp->decwin)+512+16)
|
||||
table[16] = table[0] = (double) intwinbase[j] / 65536.0 * (double) scaleval;
|
||||
if(i % 32 == 31)
|
||||
table -= 1023;
|
||||
if(i % 64 == 63)
|
||||
scaleval = - scaleval;
|
||||
}
|
||||
|
||||
for( /* i=256 */ ;i<512;i++,j--,table+=32)
|
||||
{
|
||||
if(table < (mp->decwin)+512+16)
|
||||
table[16] = table[0] = (double) intwinbase[j] / 65536.0 * (double) scaleval;
|
||||
if(i % 32 == 31)
|
||||
table -= 1023;
|
||||
if(i % 64 == 63)
|
||||
scaleval = - scaleval;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in a new issue