forked from KolibriOS/kolibrios
updated ac97snd
git-svn-id: svn://kolibrios.org@228 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
parent
36ae3b7991
commit
86db9e1fc4
@ -9,6 +9,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "pow_test", "pow_test\pow_te
|
||||
EndProject
|
||||
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ac97", "ac97\ac97.vcproj", "{1C94A897-DA4F-45B2-B8A6-B97AD837828E}"
|
||||
EndProject
|
||||
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "mpg", "mpg\mpg.vcproj", "{CF807B93-2860-41DF-A4D2-5B92B52DFD96}"
|
||||
EndProject
|
||||
Global
|
||||
GlobalSection(SolutionConfigurationPlatforms) = preSolution
|
||||
Debug|Win32 = Debug|Win32
|
||||
@ -31,6 +33,10 @@ Global
|
||||
{1C94A897-DA4F-45B2-B8A6-B97AD837828E}.Debug|Win32.Build.0 = Debug|Win32
|
||||
{1C94A897-DA4F-45B2-B8A6-B97AD837828E}.Release|Win32.ActiveCfg = Release|Win32
|
||||
{1C94A897-DA4F-45B2-B8A6-B97AD837828E}.Release|Win32.Build.0 = Release|Win32
|
||||
{CF807B93-2860-41DF-A4D2-5B92B52DFD96}.Debug|Win32.ActiveCfg = Debug|Win32
|
||||
{CF807B93-2860-41DF-A4D2-5B92B52DFD96}.Debug|Win32.Build.0 = Debug|Win32
|
||||
{CF807B93-2860-41DF-A4D2-5B92B52DFD96}.Release|Win32.ActiveCfg = Release|Win32
|
||||
{CF807B93-2860-41DF-A4D2-5B92B52DFD96}.Release|Win32.Build.0 = Release|Win32
|
||||
EndGlobalSection
|
||||
GlobalSection(SolutionProperties) = preSolution
|
||||
HideSolutionNode = FALSE
|
||||
|
||||
@ -14,15 +14,20 @@
|
||||
// GNU General Public License for more details.
|
||||
|
||||
#include "kolibri.h"
|
||||
#include "stdio.h"
|
||||
//#include "stdio.h"
|
||||
#include "string.h"
|
||||
#include "ac97wav.h"
|
||||
#include "mp3dec/mp3dec.h"
|
||||
#include "mpg/mpg123.h"
|
||||
|
||||
#define MP3_ERROR_OUT_OF_BUFFER 5
|
||||
int m_last_error;
|
||||
|
||||
void thread_proc();
|
||||
void touch(char *buf, int size);
|
||||
int mp3FindSync(byte* buf, int size, int* sync);
|
||||
int stream_read_raw(struct reader *rd,unsigned char *buf, int size);
|
||||
|
||||
extern char *__argv;
|
||||
char *fname;
|
||||
|
||||
//extern char __path;
|
||||
|
||||
@ -40,6 +45,10 @@ char formats[37][12] =
|
||||
"PCM_2_8_11","PCM_1_8_11","PCM_2_8_8","PCM_1_8_8"
|
||||
};
|
||||
*******/
|
||||
//int freqs[9] = {44100,48000,32000,22050,24000,16000 ,11025 ,12000 ,8000};
|
||||
|
||||
struct reader rd;
|
||||
struct frame fr;
|
||||
|
||||
DWORD hDrv;
|
||||
DWORD hSound;
|
||||
@ -55,20 +64,22 @@ DWORD status;
|
||||
DWORD offset;
|
||||
DWORD first_sync;
|
||||
|
||||
char *testbuff;
|
||||
char *outbuf;
|
||||
char *inpbuf;
|
||||
unsigned char *testbuff;
|
||||
unsigned char *outbuf;
|
||||
unsigned char *inpbuf;
|
||||
unsigned char *outPtr;
|
||||
|
||||
int inpsize;
|
||||
int outsize;
|
||||
int outremain;
|
||||
int totalout;
|
||||
int done;
|
||||
|
||||
char srv_name[] = "INFINITY";
|
||||
char srv_intel[] = "SOUND";
|
||||
char header[] = "AC97 MP3 player";
|
||||
char buttons_text[]=" Play Stop << >> Vol- Vol+";
|
||||
|
||||
MPEG_DECODE_INFO mpginfo;
|
||||
MPEG_DECODE_PARAM param;
|
||||
|
||||
void (*snd_play)();
|
||||
|
||||
void draw_window()
|
||||
@ -88,8 +99,8 @@ void draw_window()
|
||||
draw_bar(7,41,286,11,0x404040);
|
||||
|
||||
draw_bar(7,55,286,11,0x404040);
|
||||
write_text(12,58,0x004000|FONT0, __argv, strlen(__argv));
|
||||
write_text(11,57,0x00FF20|FONT0, __argv, strlen(__argv));
|
||||
write_text(12,58,0x004000|FONT0, fname, strlen(fname));
|
||||
write_text(11,57,0x00FF20|FONT0, fname, strlen(fname));
|
||||
|
||||
write_text(8,8,0xFFFFFF|FONT0, header, strlen(header));
|
||||
write_text(12,28,0x404040|FONT0,buttons_text,strlen(buttons_text));
|
||||
@ -100,7 +111,7 @@ void draw_window()
|
||||
|
||||
void draw_progress_bar()
|
||||
{ DWORD x;
|
||||
x = 286.0f * (float)offset/(float)fileinfo.size;
|
||||
x = 286.0f * (float)(rd.filepos-rd.strremain)/(float)fileinfo.size;
|
||||
if(x==0) return;
|
||||
draw_bar(7,41,x,11,0xA0A0A0);
|
||||
draw_bar(x+7,41,286-x,11,0x404040);
|
||||
@ -115,18 +126,21 @@ void debug_out_str(char* str)
|
||||
}
|
||||
}
|
||||
|
||||
int main() //int argc, char *argv[])
|
||||
int main(int argc, char *argv[]) //int argc, char *argv[])
|
||||
{ DWORD fmt;
|
||||
char *thread_stack;
|
||||
DWORD r_bytes;
|
||||
int retval;
|
||||
|
||||
fname = argv[1];
|
||||
//debug_out_str(fname);
|
||||
|
||||
InitHeap(1024*1024);
|
||||
if(get_fileinfo(__argv, &fileinfo)==FILE_NOT_FOUND)
|
||||
if(get_fileinfo(fname, &fileinfo)==FILE_NOT_FOUND)
|
||||
return 0;
|
||||
|
||||
if((hDrv=GetService(srv_intel))==0)
|
||||
return 0;
|
||||
return 0;
|
||||
|
||||
if ((hSound=GetService(srv_name))==0)
|
||||
return 0;
|
||||
@ -139,35 +153,38 @@ int main() //int argc, char *argv[])
|
||||
SetMasterVol(hDrv,m_vol);
|
||||
};
|
||||
|
||||
_asm {fninit};
|
||||
mp3DecodeInit();
|
||||
|
||||
testbuff = UserAlloc(4096);
|
||||
get_fileinfo(__argv, &fileinfo);
|
||||
get_fileinfo(fname, &fileinfo);
|
||||
offset = 0;
|
||||
retval=read_file (__argv,testbuff,0,2048,&r_bytes);
|
||||
retval=read_file (fname,testbuff,0,2048,&r_bytes);
|
||||
if (retval) return 0;
|
||||
|
||||
inpbuf = UserAlloc(0x10000);
|
||||
touch(inpbuf, 0x10000);
|
||||
|
||||
create_reader(&rd, inpbuf, 0x10000);
|
||||
init_reader(&rd,fname);
|
||||
|
||||
fmt = test_wav((WAVEHEADER*)testbuff);
|
||||
if (fmt != 0)
|
||||
{
|
||||
snd_play = &play_wave;
|
||||
set_reader(&rd, 44);
|
||||
outbuf = UserAlloc(32*1024);
|
||||
touch(outbuf, 32768);
|
||||
offset = 44;
|
||||
}
|
||||
else
|
||||
{ fmt = test_mp3(testbuff);
|
||||
if(fmt ==0) return 0;
|
||||
snd_play = &play_mp3;
|
||||
{ fmt = test_mp3(testbuff);
|
||||
if(fmt ==0) return 0;
|
||||
snd_play = &play_mp3;
|
||||
|
||||
inpsize = mpginfo.maxInputSize*30;
|
||||
inpbuf = UserAlloc(inpsize);
|
||||
touch(inpbuf, inpsize);
|
||||
outsize = mpginfo.outputSize*30+0x10000;
|
||||
outbuf = UserAlloc(outsize);
|
||||
touch(outbuf, outsize);
|
||||
first_sync = offset;
|
||||
outremain = 0x40000 ;
|
||||
outbuf = UserAlloc(outremain);
|
||||
touch(outbuf, outremain);
|
||||
make_decode_tables(32767);
|
||||
init_layer2();
|
||||
init_layer3(SBLIMIT);
|
||||
fr.single = -1;
|
||||
};
|
||||
|
||||
status = ST_PLAY;
|
||||
@ -202,134 +219,129 @@ int main() //int argc, char *argv[])
|
||||
|
||||
void touch(char *buf, int size)
|
||||
{ int i;
|
||||
char a;
|
||||
for ( i = 0;i < size; i+=4096)
|
||||
buf[i] = 0;
|
||||
a = buf[i];
|
||||
};
|
||||
|
||||
DWORD test_mp3(char *buf)
|
||||
{ int retval;
|
||||
int sync;
|
||||
{ unsigned long hdr;
|
||||
WAVEHEADER whdr;
|
||||
DWORD r_bytes=2048;
|
||||
|
||||
for (;;)
|
||||
{
|
||||
if (!mp3FindSync(buf, 2048, &sync))
|
||||
offset+= 2048;
|
||||
else break;
|
||||
while (1)
|
||||
{ if(rd.filepos > 102400)
|
||||
return 0;
|
||||
if(!rd.head_read(&rd,&hdr))
|
||||
return 0;
|
||||
if(!decode_header(&fr,hdr))
|
||||
{ rd.strpos-=3;
|
||||
rd.stream-=3;
|
||||
rd.strremain+=3;
|
||||
continue;
|
||||
};
|
||||
break;
|
||||
};
|
||||
|
||||
if (offset >= fileinfo.size || offset >= 102400)
|
||||
return 0;
|
||||
first_sync = rd.filepos-rd.strremain-4;
|
||||
|
||||
retval = read_file (__argv,buf,offset,2048,&r_bytes);
|
||||
if(retval != 0) return 0;
|
||||
};
|
||||
offset+=sync;
|
||||
retval = read_file (__argv,buf,offset,2048,&r_bytes);
|
||||
if(retval != 0) return 0;
|
||||
|
||||
mp3GetDecodeInfo(buf, r_bytes, &mpginfo, 1);
|
||||
whdr.riff_id = 0x46464952;
|
||||
whdr.riff_format = 0x45564157;
|
||||
whdr.wFormatTag = 0x01;
|
||||
whdr.nSamplesPerSec = mpginfo.frequency;
|
||||
whdr.nChannels = mpginfo.channels;
|
||||
whdr.wBitsPerSample = mpginfo.bitsPerSample;
|
||||
whdr.nSamplesPerSec = freqs[fr.sampling_frequency];
|
||||
whdr.nChannels = 2; //mpginfo.channels;
|
||||
whdr.wBitsPerSample = 16;
|
||||
|
||||
return test_wav(&whdr);
|
||||
};
|
||||
|
||||
void wave_out(char* buff)
|
||||
{ DWORD ev[2];
|
||||
{ DWORD ev[6];
|
||||
|
||||
GetNotify(&ev[0]);
|
||||
SetBuffer(hSound,hBuff,buff,ev[1],0x8000);
|
||||
}
|
||||
|
||||
void play_mp3()
|
||||
{ int retval;
|
||||
DWORD r_bytes;
|
||||
char *inpPtr;
|
||||
char *outPtr;
|
||||
int inpBytes;
|
||||
{ char *outPtr;
|
||||
int totalout;
|
||||
int outcount;
|
||||
|
||||
offset = first_sync;
|
||||
set_reader(&rd, first_sync);
|
||||
|
||||
retval = read_file (__argv,inpbuf,offset,inpsize,&r_bytes);
|
||||
if(retval != 0)
|
||||
{ status = ST_STOP;
|
||||
return ;
|
||||
};
|
||||
offset+=inpsize;
|
||||
|
||||
mp3DecodeStart(inpbuf, inpsize);
|
||||
|
||||
inpPtr = inpbuf+mpginfo.skipSize;
|
||||
inpBytes = inpsize-mpginfo.skipSize;
|
||||
outPtr = outbuf;
|
||||
totalout=0;
|
||||
done = 0;
|
||||
|
||||
memset(outbuf,0,0x10000);
|
||||
SetBuffer(hSound,hBuff,outbuf,0,0x10000);
|
||||
PlayBuffer(hSound, hBuff);
|
||||
|
||||
_asm { fninit }
|
||||
|
||||
while(1)
|
||||
{ if(status!=ST_PLAY)
|
||||
break;
|
||||
|
||||
for(;;)
|
||||
{ param.inputBuf = inpPtr;
|
||||
param.inputSize = inpBytes;
|
||||
param.outputBuf = outPtr;
|
||||
|
||||
if(!mp3DecodeFrame(¶m))
|
||||
if( mp3GetLastError()== MP3_ERROR_OUT_OF_BUFFER)
|
||||
for(;;)
|
||||
{ outcount = 0;
|
||||
if( !read_frame(&rd, &fr))
|
||||
{ done = 1;
|
||||
break;
|
||||
|
||||
inpPtr += param.inputSize;
|
||||
inpBytes -= param.inputSize;
|
||||
outPtr+=param.outputSize;
|
||||
totalout+=param.outputSize;
|
||||
};
|
||||
memmove(inpbuf, inpPtr, inpBytes);
|
||||
retval = read_file(__argv, &inpbuf[inpBytes],offset, inpsize-inpBytes, &r_bytes);
|
||||
offset+=r_bytes;
|
||||
|
||||
if (r_bytes== 0) break;
|
||||
|
||||
inpPtr = inpbuf;
|
||||
inpBytes += r_bytes;
|
||||
if(totalout < 32768) continue;
|
||||
|
||||
outPtr = outbuf;
|
||||
while (totalout > 32768)
|
||||
{ wave_out(outPtr);
|
||||
totalout-=0x8000;
|
||||
outPtr+=0x8000;
|
||||
};
|
||||
memmove(outbuf,outPtr, totalout);
|
||||
outPtr = outbuf+totalout;
|
||||
};
|
||||
fr.do_layer(&fr, outPtr,&outcount);
|
||||
outPtr+= outcount;
|
||||
totalout+=outcount;
|
||||
outremain-=outcount;
|
||||
if(outremain < outcount*2)
|
||||
break;
|
||||
};
|
||||
|
||||
if(done)
|
||||
{ if(totalout < 32768)
|
||||
{ memset(outPtr,0,32768-totalout);
|
||||
totalout = 32768;
|
||||
};
|
||||
};
|
||||
if(totalout < 32768)
|
||||
continue;
|
||||
/*
|
||||
_asm
|
||||
{ push edx
|
||||
push eax
|
||||
mov eax, 0xFF
|
||||
mov edx, 0x400
|
||||
out dx, al
|
||||
pop eax
|
||||
pop edx
|
||||
};
|
||||
*/
|
||||
outPtr = outbuf;
|
||||
while (totalout > 32768)
|
||||
{ wave_out(outPtr);
|
||||
totalout-=0x8000;
|
||||
outPtr+=0x8000;
|
||||
outremain+=0x8000;
|
||||
};
|
||||
if(done) break;
|
||||
memmove(outbuf,outPtr, totalout);
|
||||
outPtr = outbuf+totalout;
|
||||
}
|
||||
|
||||
if(status != ST_EXIT)
|
||||
status = ST_STOP;
|
||||
};
|
||||
|
||||
void play_wave()
|
||||
{
|
||||
{ DWORD ev[6];
|
||||
int retval;
|
||||
int remain;
|
||||
int i;
|
||||
|
||||
offset = 44;
|
||||
// offset = 44;
|
||||
|
||||
read_file (__argv,outbuf,offset,32*1024,0);
|
||||
offset+=32*1024;
|
||||
// read_file (fname,outbuf,offset,32*1024,0);
|
||||
// offset+=32*1024;
|
||||
stream_read_raw(&rd,outbuf,32768);
|
||||
SetBuffer(hSound,hBuff,outbuf,0,0x8000);
|
||||
|
||||
read_file (__argv,outbuf,offset,32*1024,0);
|
||||
offset+=32*1024;
|
||||
stream_read_raw(&rd,outbuf,32768);
|
||||
SetBuffer(hSound,hBuff,outbuf,0x8000,0x8000);
|
||||
|
||||
PlayBuffer(hSound, hBuff);
|
||||
@ -337,28 +349,14 @@ void play_wave()
|
||||
retval = 0;
|
||||
while(1)
|
||||
{
|
||||
if(status!=ST_PLAY)
|
||||
break;
|
||||
if(status!=ST_PLAY)
|
||||
break;
|
||||
|
||||
GetNotify(&event[0]);
|
||||
if(retval == FILE_EOF)
|
||||
break;
|
||||
remain = fileinfo.size-offset;
|
||||
if(remain >=32768)
|
||||
{ retval = read_file (__argv,outbuf,offset,32*1024,0);
|
||||
offset+=32*1024;
|
||||
SetBuffer(hSound,hBuff,outbuf,event[1],0x8000);
|
||||
continue;
|
||||
};
|
||||
if(remain == 0)
|
||||
{ retval = FILE_EOF;
|
||||
continue;
|
||||
};
|
||||
read_file (__argv,outbuf,offset,remain,0);
|
||||
for(i=remain;i<32768;i++)
|
||||
outbuf[i] = 0;
|
||||
SetBuffer(hSound,hBuff,outbuf,event[1],0x8000);
|
||||
retval= FILE_EOF;
|
||||
if( !stream_read_raw(&rd,outbuf,32768))
|
||||
{ done = 1;
|
||||
break;
|
||||
};
|
||||
wave_out(outbuf);
|
||||
};
|
||||
|
||||
if(status != ST_EXIT)
|
||||
@ -371,7 +369,7 @@ void snd_stop()
|
||||
};
|
||||
|
||||
void thread_proc()
|
||||
{ int evnt;
|
||||
{ int evnt;
|
||||
int pos;
|
||||
int key;
|
||||
|
||||
@ -449,10 +447,11 @@ void thread_proc()
|
||||
case 0x30:
|
||||
if(status==ST_DONE)
|
||||
break;
|
||||
if(snd_play == play_mp3)
|
||||
continue;
|
||||
// if(snd_play == play_mp3)
|
||||
// continue;
|
||||
pos = (GetMousePos(REL_WINDOW)>>16)-7;
|
||||
offset = ((fileinfo.size-44)/286*pos+44)&0xFFFFFFFC;
|
||||
set_reader(&rd, offset);
|
||||
draw_progress_bar();
|
||||
break;
|
||||
};
|
||||
@ -632,7 +631,8 @@ int wait_for_event(int time)
|
||||
};
|
||||
|
||||
int wait_for_event_infinite()
|
||||
{ int retval;
|
||||
{ void *a;
|
||||
int retval;
|
||||
_asm
|
||||
{ mov eax,10
|
||||
int 0x40
|
||||
@ -657,8 +657,10 @@ void EndDraw()
|
||||
};
|
||||
};
|
||||
|
||||
void * __cdecl memmove ( void * dst, const void * src, size_t count)
|
||||
{ void * ret = dst;
|
||||
///*********
|
||||
void *memmove ( void * dst, void * src, int count)
|
||||
{ void *ret;
|
||||
ret = dst;
|
||||
|
||||
if (dst <= src || (char *)dst >= ((char *)src + count))
|
||||
{
|
||||
@ -678,11 +680,19 @@ void * __cdecl memmove ( void * dst, const void * src, size_t count)
|
||||
src = (char *)src - 1;
|
||||
}
|
||||
}
|
||||
return(ret);
|
||||
return ret;
|
||||
};
|
||||
//**********/
|
||||
|
||||
|
||||
|
||||
void * __cdecl mem_cpy(void * dst,const void * src,size_t count)
|
||||
{ void * ret = dst;
|
||||
while (count--)
|
||||
{ *(char *)dst = *(char *)src;
|
||||
dst = (char *)dst + 1;
|
||||
src = (char *)src + 1;
|
||||
};
|
||||
return(ret);
|
||||
}
|
||||
|
||||
// debug_out_str(formats[fmt]);
|
||||
// debug_out_str("\x0D\x0A\x00");
|
||||
|
||||
@ -4,10 +4,12 @@
|
||||
|
||||
char pureCallMessage[] = "PURE function call!";
|
||||
|
||||
char *__argv = 0;
|
||||
char *__argv[2];
|
||||
int __argc;
|
||||
|
||||
void (__cdecl *atExitList[atexitBufferSize])();
|
||||
int atExitFnNum = 0;
|
||||
int main(int argc, char *argv[]);
|
||||
|
||||
void exit()
|
||||
{ int i;
|
||||
@ -62,8 +64,10 @@ void crtStartUp()
|
||||
if ( *pbegin != 0 )
|
||||
(**pbegin)();
|
||||
}
|
||||
__argv = *((char **)0x1C);
|
||||
main();
|
||||
__argc = 2;
|
||||
__argv[0] = *((char **)0x20);
|
||||
__argv[1] = *((char **)0x1C);
|
||||
main(__argc, __argv);
|
||||
exit();
|
||||
}
|
||||
|
||||
|
||||
@ -1,19 +1,3 @@
|
||||
;
|
||||
; This file is part of the AC97 mp3 player.
|
||||
; (C) copyright Serge 2006
|
||||
; email: infinity_sound@mail.ru
|
||||
;
|
||||
; This program is free software; you can redistribute it and/or modify
|
||||
; it under the terms of the GNU General Public License as published by
|
||||
; the Free Software Foundation; either version 2 of the License, or
|
||||
; (at your option) any later version.
|
||||
;
|
||||
; This program is distributed in the hope that it will be useful,
|
||||
; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
; GNU General Public License for more details.
|
||||
|
||||
|
||||
format MS COFF
|
||||
|
||||
include "proc32.inc"
|
||||
@ -63,27 +47,27 @@ struc CTRL_INFO
|
||||
.irq dd ?
|
||||
.glob_cntrl dd ?
|
||||
.glob_sta dd ?
|
||||
.codec_io_base dd ?
|
||||
.ctrl_io_base dd ?
|
||||
.codec_mem_base dd ?
|
||||
.ctrl_mem_base dd ?
|
||||
.codec_io_base dd ?
|
||||
.ctrl_io_base dd ?
|
||||
.codec_mem_base dd ?
|
||||
.ctrl_mem_base dd ?
|
||||
.codec_id dd ?
|
||||
}
|
||||
CTRL_INFO_SIZE equ 9*4
|
||||
|
||||
|
||||
SND_CREATE_DEV equ 1
|
||||
SND_CREATE_BUFF equ 2
|
||||
SND_PLAY equ 3
|
||||
SND_STOP equ 4
|
||||
SND_SETBUFF equ 5
|
||||
SND_CREATE_DEV equ 1
|
||||
SND_CREATE_BUFF equ 2
|
||||
SND_PLAY equ 3
|
||||
SND_STOP equ 4
|
||||
SND_SETBUFF equ 5
|
||||
SND_DESTROY_BUFF equ 6
|
||||
|
||||
DEV_SET_BUFF equ 4
|
||||
DEV_NOTIFY equ 5
|
||||
DEV_SET_MASTERVOL equ 6
|
||||
DEV_GET_MASTERVOL equ 7
|
||||
DEV_GET_INFO equ 8
|
||||
DEV_SET_BUFF equ 4
|
||||
DEV_NOTIFY equ 5
|
||||
DEV_SET_MASTERVOL equ 6
|
||||
DEV_GET_MASTERVOL equ 7
|
||||
DEV_GET_INFO equ 8
|
||||
|
||||
|
||||
align 4
|
||||
@ -170,35 +154,46 @@ endp
|
||||
|
||||
align 4
|
||||
proc _InitHeap@4 stdcall, heap_size:dword
|
||||
push ebx
|
||||
mov eax, 68
|
||||
mov ebx, 11
|
||||
push ebx
|
||||
mov eax, 68
|
||||
mov ebx, 11
|
||||
mov ecx, [heap_size]
|
||||
int 0x40
|
||||
pop ebx
|
||||
ret
|
||||
int 0x40
|
||||
pop ebx
|
||||
ret
|
||||
endp
|
||||
|
||||
align 4
|
||||
proc _UserAlloc@4 stdcall, alloc_size:dword
|
||||
push ebx
|
||||
mov eax, 68
|
||||
mov ebx, 12
|
||||
push ebx
|
||||
mov eax, 68
|
||||
mov ebx, 12
|
||||
mov ecx, [alloc_size]
|
||||
int 0x40
|
||||
pop ebx
|
||||
ret
|
||||
int 0x40
|
||||
pop ebx
|
||||
ret
|
||||
endp
|
||||
|
||||
;align 4
|
||||
;proc _GetNotify@4 stdcall, p_ev:dword
|
||||
; push ebx
|
||||
; mov eax, 68
|
||||
; mov ebx, 14
|
||||
; mov ecx, [p_ev]
|
||||
; int 0x40
|
||||
; pop ebx
|
||||
; ret
|
||||
;endp
|
||||
|
||||
align 4
|
||||
proc _GetNotify@4 stdcall, p_ev:dword
|
||||
push ebx
|
||||
mov eax, 68
|
||||
mov ebx, 14
|
||||
mov ecx, [p_ev]
|
||||
int 0x40
|
||||
pop ebx
|
||||
ret
|
||||
push ebx
|
||||
mov eax, 68
|
||||
mov ebx, 14
|
||||
mov ecx, [p_ev]
|
||||
int 0x40
|
||||
pop ebx
|
||||
ret
|
||||
endp
|
||||
|
||||
align 4
|
||||
@ -208,9 +203,9 @@ proc _CreateThread@8 stdcall, fn:dword, p_stack:dword
|
||||
mov ebx, 1
|
||||
mov ecx, [fn]
|
||||
mov edx,[p_stack]
|
||||
int 0x40
|
||||
pop ebx
|
||||
ret
|
||||
int 0x40
|
||||
pop ebx
|
||||
ret
|
||||
endp
|
||||
|
||||
align 4
|
||||
@ -218,31 +213,31 @@ proc _GetMousePos@4 stdcall,rel_type:dword
|
||||
push ebx
|
||||
mov eax, 37
|
||||
mov ebx, [rel_type]
|
||||
int 0x40
|
||||
pop ebx
|
||||
ret
|
||||
int 0x40
|
||||
pop ebx
|
||||
ret
|
||||
endp
|
||||
|
||||
align 4
|
||||
proc CallServiceEx stdcall, ioctl:dword
|
||||
push ebx
|
||||
mov eax, 68
|
||||
mov ebx, 17
|
||||
push ebx
|
||||
mov eax, 68
|
||||
mov ebx, 17
|
||||
mov ecx, [ioctl]
|
||||
int 0x40
|
||||
pop ebx
|
||||
ret
|
||||
int 0x40
|
||||
pop ebx
|
||||
ret
|
||||
endp
|
||||
|
||||
align 4
|
||||
proc _GetService@4 stdcall, name:dword
|
||||
push ebx
|
||||
mov eax, 68
|
||||
mov ebx, 16
|
||||
mov ebx, 16
|
||||
mov ecx, [name]
|
||||
int 0x40
|
||||
pop ebx
|
||||
ret
|
||||
int 0x40
|
||||
pop ebx
|
||||
ret
|
||||
endp
|
||||
|
||||
align 4
|
||||
@ -271,7 +266,7 @@ proc _GetDevInfo@8 stdcall, hSrv:dword, p_info:dword
|
||||
lea eax, [handle]
|
||||
stdcall CallServiceEx, eax
|
||||
pop ebx
|
||||
ret
|
||||
ret
|
||||
endp
|
||||
|
||||
align 4
|
||||
@ -299,7 +294,7 @@ proc _GetMasterVol@8 stdcall, hSrv:dword,pvol:dword
|
||||
lea eax, [handle]
|
||||
stdcall CallServiceEx, eax
|
||||
pop ebx
|
||||
ret
|
||||
ret
|
||||
endp
|
||||
|
||||
align 4
|
||||
@ -328,7 +323,7 @@ proc _SetMasterVol@8 stdcall,hSrv:dword,vol:dword
|
||||
lea eax, [handle]
|
||||
stdcall CallServiceEx, eax
|
||||
pop ebx
|
||||
ret
|
||||
ret
|
||||
endp
|
||||
|
||||
align 4
|
||||
@ -357,7 +352,7 @@ proc _CreateBuffer@8 stdcall, hSound:dword,format:dword
|
||||
lea eax, [handle]
|
||||
stdcall CallServiceEx, eax
|
||||
pop ebx
|
||||
ret
|
||||
ret
|
||||
endp
|
||||
|
||||
align 4
|
||||
@ -386,7 +381,7 @@ proc _DestroyBuffer@8 stdcall, hSound:dword, str:dword
|
||||
lea eax, [handle]
|
||||
stdcall CallServiceEx, eax
|
||||
pop ebx
|
||||
ret
|
||||
ret
|
||||
endp
|
||||
|
||||
align 4
|
||||
@ -415,7 +410,7 @@ proc _SetBuffer@20 stdcall,hSound:dword, str:dword, src:dword, offs:dword, size:
|
||||
lea eax, [handle]
|
||||
stdcall CallServiceEx, eax
|
||||
pop ebx
|
||||
ret
|
||||
ret
|
||||
endp
|
||||
|
||||
align 4
|
||||
@ -444,7 +439,7 @@ proc _PlayBuffer@8 stdcall, hSound:dword, str:dword
|
||||
lea eax, [handle]
|
||||
stdcall CallServiceEx, eax
|
||||
pop ebx
|
||||
ret
|
||||
ret
|
||||
endp
|
||||
|
||||
align 4
|
||||
@ -564,10 +559,10 @@ _write_text@20:
|
||||
align 4
|
||||
proc _debug_out@4 stdcall, val:dword
|
||||
push ebx
|
||||
mov ecx,[val]
|
||||
mov ebx,1
|
||||
mov eax,63
|
||||
int 0x40
|
||||
mov ecx,[val]
|
||||
mov ebx,1
|
||||
mov eax,63
|
||||
int 0x40
|
||||
pop ebx
|
||||
ret
|
||||
endp
|
||||
@ -633,7 +628,7 @@ dwords:
|
||||
shr ecx,2
|
||||
jz tail
|
||||
|
||||
cld
|
||||
cld
|
||||
rep stosd
|
||||
main_loop_tail:
|
||||
test edx,edx
|
||||
@ -658,6 +653,51 @@ toend:
|
||||
|
||||
ret
|
||||
|
||||
public _allmul
|
||||
|
||||
_allmul:
|
||||
mov eax, [esp+8]
|
||||
mov ecx, [esp+16]
|
||||
or ecx,eax
|
||||
mov ecx, [esp+12]
|
||||
jnz .hard
|
||||
mov eax, [esp+4]
|
||||
mul ecx
|
||||
ret 16
|
||||
.hard:
|
||||
push ebx
|
||||
mul ecx
|
||||
mov ebx,eax
|
||||
mov eax, [esp+8]
|
||||
mul dword [esp+20]
|
||||
add ebx,eax
|
||||
mov eax,[esp+8]
|
||||
mul ecx
|
||||
add edx,ebx
|
||||
pop ebx
|
||||
ret 16
|
||||
|
||||
align 4
|
||||
_allshr:
|
||||
cmp cl,64
|
||||
jae .sign
|
||||
|
||||
cmp cl, 32
|
||||
jae .MORE32
|
||||
shrd eax,edx,cl
|
||||
sar edx,cl
|
||||
ret
|
||||
.MORE32:
|
||||
mov eax,edx
|
||||
sar edx,31
|
||||
and cl,31
|
||||
sar eax,cl
|
||||
ret
|
||||
.sign:
|
||||
sar edx,31
|
||||
mov eax,edx
|
||||
ret
|
||||
|
||||
public __ftol2_sse
|
||||
|
||||
align 4
|
||||
|
||||
@ -67,6 +67,7 @@ typedef struct
|
||||
DWORD mod_time;
|
||||
DWORD mod_date;
|
||||
DWORD size;
|
||||
DWORD size_high;
|
||||
} FILEINFO;
|
||||
|
||||
void _stdcall InitHeap(int heap_size);
|
||||
@ -93,15 +94,15 @@ int _stdcall get_fileinfo(char *name,FILEINFO* pinfo);
|
||||
int _stdcall read_file (char *name,char*buff,int offset,int count,int *reads);
|
||||
|
||||
void exit();
|
||||
int get_key(void);
|
||||
int get_button_id();
|
||||
int _cdecl get_key(void);
|
||||
int _cdecl get_button_id();
|
||||
void delay(int val);
|
||||
int wait_for_event(int time);
|
||||
int wait_for_event_infinite();
|
||||
void BeginDraw(void);
|
||||
void EndDraw(void);
|
||||
void _stdcall DrawWindow(int x,int y, int sx, int sy,int workcolor,int style,
|
||||
int captioncolor,int windowtype,int bordercolor);
|
||||
int captioncolor,int windowtype,int bordercolor);
|
||||
void _stdcall debug_out(int ch);
|
||||
void _stdcall make_button(int x, int y, int xsize, int ysize, int id, int color);
|
||||
void _stdcall draw_bar(int x, int y, int xsize, int ysize, int color);
|
||||
|
||||
136
programs/media/ac97snd/trunk/mpg/common.c
Normal file
136
programs/media/ac97snd/trunk/mpg/common.c
Normal file
@ -0,0 +1,136 @@
|
||||
#include <stdlib.h>
|
||||
#include "mpg123.h"
|
||||
|
||||
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 };
|
||||
|
||||
#define HDRCMPMASK 0xfffffd00
|
||||
|
||||
struct bitstream_info bsi;
|
||||
|
||||
int ssize;
|
||||
|
||||
unsigned long read_header(BYTE *mpeg)
|
||||
{ unsigned long hdr;
|
||||
|
||||
hdr = *mpeg++;
|
||||
hdr <<= 8;
|
||||
hdr |= *mpeg++;
|
||||
hdr <<= 8;
|
||||
hdr |= *mpeg++;
|
||||
hdr <<= 8;
|
||||
hdr |= *mpeg++;
|
||||
return hdr;
|
||||
};
|
||||
|
||||
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;
|
||||
}
|
||||
|
||||
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) {
|
||||
fprintf(stderr,"Stream error, reserved sampling rate\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)
|
||||
{
|
||||
fprintf(stderr, "Stream error, free format bitrate index not supported\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
switch(fr->lay)
|
||||
{
|
||||
case 1:
|
||||
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;
|
||||
break;
|
||||
case 2:
|
||||
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;
|
||||
break;
|
||||
|
||||
case 3:
|
||||
fr->do_layer = do_layer3;
|
||||
if(fr->lsf)
|
||||
ssize = (fr->stereo == 1) ? 9 : 17;
|
||||
else
|
||||
ssize = (fr->stereo == 1) ? 17 : 32;
|
||||
|
||||
if(fr->error_protection)
|
||||
ssize += 2;
|
||||
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:
|
||||
return (0);
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
//void set_pointer(long backstep)
|
||||
//{
|
||||
// bsi.wordpointer = bsbuf + ssize - backstep;
|
||||
// if (backstep)
|
||||
// memcpy(bsi.wordpointer,bsbufold+fsizeold-backstep,backstep);
|
||||
// bsi.bitindex = 0;
|
||||
//}
|
||||
|
||||
337
programs/media/ac97snd/trunk/mpg/dct64_i386.c
Normal file
337
programs/media/ac97snd/trunk/mpg/dct64_i386.c
Normal file
@ -0,0 +1,337 @@
|
||||
/*
|
||||
dct64_i386.c: DCT64, a C variant for i386
|
||||
|
||||
copyright ?-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
|
||||
see COPYING and AUTHORS files in distribution or http://mpg123.de
|
||||
initially written by Michael Hipp
|
||||
*/
|
||||
|
||||
/*
|
||||
* 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 "config.h"
|
||||
#include "mpg123.h"
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
342
programs/media/ac97snd/trunk/mpg/dct64_i486.c
Normal file
342
programs/media/ac97snd/trunk/mpg/dct64_i486.c
Normal file
@ -0,0 +1,342 @@
|
||||
/*
|
||||
dct64_i486.c: DCT64, a plain C variant for i486
|
||||
|
||||
copyright 1998-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
|
||||
see COPYING and AUTHORS files in distribution or http://mpg123.de
|
||||
initially written by Fabrice Bellard
|
||||
*/
|
||||
|
||||
/* Discrete Cosine Tansform (DCT) for subband synthesis.
|
||||
*
|
||||
* This code is optimized for 80486. It should be compiled with gcc
|
||||
* 2.7.2 or higher.
|
||||
*
|
||||
* Note: This code does not give the necessary accuracy. Moreover, no
|
||||
* overflow test are done.
|
||||
*
|
||||
* (c) 1998 Fabrice Bellard.
|
||||
*/
|
||||
|
||||
#include "mpg123.h"
|
||||
|
||||
#define COS_0_0 16403
|
||||
#define COS_0_1 16563
|
||||
#define COS_0_2 16890
|
||||
#define COS_0_3 17401
|
||||
#define COS_0_4 18124
|
||||
#define COS_0_5 19101
|
||||
#define COS_0_6 20398
|
||||
#define COS_0_7 22112
|
||||
#define COS_0_8 24396
|
||||
#define COS_0_9 27503
|
||||
#define COS_0_10 31869
|
||||
#define COS_0_11 38320
|
||||
#define COS_0_12 48633
|
||||
#define COS_0_13 67429
|
||||
#define COS_0_14 111660
|
||||
#define COS_0_15 333906
|
||||
#define COS_1_0 16463
|
||||
#define COS_1_1 17121
|
||||
#define COS_1_2 18577
|
||||
#define COS_1_3 21195
|
||||
#define COS_1_4 25826
|
||||
#define COS_1_5 34756
|
||||
#define COS_1_6 56441
|
||||
#define COS_1_7 167154
|
||||
#define COS_2_0 16704
|
||||
#define COS_2_1 19704
|
||||
#define COS_2_2 29490
|
||||
#define COS_2_3 83981
|
||||
#define COS_3_0 17733
|
||||
#define COS_3_1 42813
|
||||
#define COS_4_0 23170
|
||||
|
||||
#define SETOUT(out,n,expr) out[FIR_BUFFER_SIZE*(n)]=(expr)
|
||||
#define MULL(a,b) (((long)(a)*(long)(b)) >> 15)
|
||||
#define MUL(a,b) \
|
||||
(\
|
||||
((!(b & 0x3F)) ? (((a)*(b >> 6)) >> 9) :\
|
||||
((!(b & 0x1F)) ? (((a)*(b >> 5)) >> 10) :\
|
||||
((!(b & 0x0F)) ? (((a)*(b >> 4)) >> 11) :\
|
||||
((!(b & 0x07)) ? (((a)*(b >> 3)) >> 12) :\
|
||||
((!(b & 0x03)) ? (((a)*(b >> 2)) >> 13) :\
|
||||
((!(b & 0x01)) ? (((a)*(b >> 1)) >> 14) :\
|
||||
(((a)*(b )) >> 15))))))))
|
||||
|
||||
|
||||
void dct64_1_486(int *out0,int *out1,int *b1,int *b2)
|
||||
{
|
||||
b1[0x00] = b2[0x00] + b2[0x1F];
|
||||
b1[0x1F] = MUL((b2[0x00] - b2[0x1F]),COS_0_0);
|
||||
|
||||
b1[0x01] = b2[0x01] + b2[0x1E];
|
||||
b1[0x1E] = MUL((b2[0x01] - b2[0x1E]),COS_0_1);
|
||||
|
||||
b1[0x02] = b2[0x02] + b2[0x1D];
|
||||
b1[0x1D] = MUL((b2[0x02] - b2[0x1D]),COS_0_2);
|
||||
|
||||
b1[0x03] = b2[0x03] + b2[0x1C];
|
||||
b1[0x1C] = MUL((b2[0x03] - b2[0x1C]),COS_0_3);
|
||||
|
||||
b1[0x04] = b2[0x04] + b2[0x1B];
|
||||
b1[0x1B] = MUL((b2[0x04] - b2[0x1B]),COS_0_4);
|
||||
|
||||
b1[0x05] = b2[0x05] + b2[0x1A];
|
||||
b1[0x1A] = MUL((b2[0x05] - b2[0x1A]),COS_0_5);
|
||||
|
||||
b1[0x06] = b2[0x06] + b2[0x19];
|
||||
b1[0x19] = MUL((b2[0x06] - b2[0x19]),COS_0_6);
|
||||
|
||||
b1[0x07] = b2[0x07] + b2[0x18];
|
||||
b1[0x18] = MUL((b2[0x07] - b2[0x18]),COS_0_7);
|
||||
|
||||
b1[0x08] = b2[0x08] + b2[0x17];
|
||||
b1[0x17] = MUL((b2[0x08] - b2[0x17]),COS_0_8);
|
||||
|
||||
b1[0x09] = b2[0x09] + b2[0x16];
|
||||
b1[0x16] = MUL((b2[0x09] - b2[0x16]),COS_0_9);
|
||||
|
||||
b1[0x0A] = b2[0x0A] + b2[0x15];
|
||||
b1[0x15] = MUL((b2[0x0A] - b2[0x15]),COS_0_10);
|
||||
|
||||
b1[0x0B] = b2[0x0B] + b2[0x14];
|
||||
b1[0x14] = MUL((b2[0x0B] - b2[0x14]),COS_0_11);
|
||||
|
||||
b1[0x0C] = b2[0x0C] + b2[0x13];
|
||||
b1[0x13] = MUL((b2[0x0C] - b2[0x13]),COS_0_12);
|
||||
|
||||
b1[0x0D] = b2[0x0D] + b2[0x12];
|
||||
b1[0x12] = MULL((b2[0x0D] - b2[0x12]),COS_0_13);
|
||||
|
||||
b1[0x0E] = b2[0x0E] + b2[0x11];
|
||||
b1[0x11] = MULL((b2[0x0E] - b2[0x11]),COS_0_14);
|
||||
|
||||
b1[0x0F] = b2[0x0F] + b2[0x10];
|
||||
b1[0x10] = MULL((b2[0x0F] - b2[0x10]),COS_0_15);
|
||||
|
||||
|
||||
b2[0x00] = b1[0x00] + b1[0x0F];
|
||||
b2[0x0F] = MUL((b1[0x00] - b1[0x0F]),COS_1_0);
|
||||
b2[0x01] = b1[0x01] + b1[0x0E];
|
||||
b2[0x0E] = MUL((b1[0x01] - b1[0x0E]),COS_1_1);
|
||||
b2[0x02] = b1[0x02] + b1[0x0D];
|
||||
b2[0x0D] = MUL((b1[0x02] - b1[0x0D]),COS_1_2);
|
||||
b2[0x03] = b1[0x03] + b1[0x0C];
|
||||
b2[0x0C] = MUL((b1[0x03] - b1[0x0C]),COS_1_3);
|
||||
b2[0x04] = b1[0x04] + b1[0x0B];
|
||||
b2[0x0B] = MUL((b1[0x04] - b1[0x0B]),COS_1_4);
|
||||
b2[0x05] = b1[0x05] + b1[0x0A];
|
||||
b2[0x0A] = MUL((b1[0x05] - b1[0x0A]),COS_1_5);
|
||||
b2[0x06] = b1[0x06] + b1[0x09];
|
||||
b2[0x09] = MUL((b1[0x06] - b1[0x09]),COS_1_6);
|
||||
b2[0x07] = b1[0x07] + b1[0x08];
|
||||
b2[0x08] = MULL((b1[0x07] - b1[0x08]),COS_1_7);
|
||||
|
||||
b2[0x10] = b1[0x10] + b1[0x1F];
|
||||
b2[0x1F] = MUL((b1[0x1F] - b1[0x10]),COS_1_0);
|
||||
b2[0x11] = b1[0x11] + b1[0x1E];
|
||||
b2[0x1E] = MUL((b1[0x1E] - b1[0x11]),COS_1_1);
|
||||
b2[0x12] = b1[0x12] + b1[0x1D];
|
||||
b2[0x1D] = MUL((b1[0x1D] - b1[0x12]),COS_1_2);
|
||||
b2[0x13] = b1[0x13] + b1[0x1C];
|
||||
b2[0x1C] = MUL((b1[0x1C] - b1[0x13]),COS_1_3);
|
||||
b2[0x14] = b1[0x14] + b1[0x1B];
|
||||
b2[0x1B] = MUL((b1[0x1B] - b1[0x14]),COS_1_4);
|
||||
b2[0x15] = b1[0x15] + b1[0x1A];
|
||||
b2[0x1A] = MUL((b1[0x1A] - b1[0x15]),COS_1_5);
|
||||
b2[0x16] = b1[0x16] + b1[0x19];
|
||||
b2[0x19] = MUL((b1[0x19] - b1[0x16]),COS_1_6);
|
||||
b2[0x17] = b1[0x17] + b1[0x18];
|
||||
b2[0x18] = MULL((b1[0x18] - b1[0x17]),COS_1_7);
|
||||
|
||||
|
||||
b1[0x00] = b2[0x00] + b2[0x07];
|
||||
b1[0x07] = MUL((b2[0x00] - b2[0x07]),COS_2_0);
|
||||
b1[0x01] = b2[0x01] + b2[0x06];
|
||||
b1[0x06] = MUL((b2[0x01] - b2[0x06]),COS_2_1);
|
||||
b1[0x02] = b2[0x02] + b2[0x05];
|
||||
b1[0x05] = MUL((b2[0x02] - b2[0x05]),COS_2_2);
|
||||
b1[0x03] = b2[0x03] + b2[0x04];
|
||||
b1[0x04] = MULL((b2[0x03] - b2[0x04]),COS_2_3);
|
||||
|
||||
b1[0x08] = b2[0x08] + b2[0x0F];
|
||||
b1[0x0F] = MUL((b2[0x0F] - b2[0x08]),COS_2_0);
|
||||
b1[0x09] = b2[0x09] + b2[0x0E];
|
||||
b1[0x0E] = MUL((b2[0x0E] - b2[0x09]),COS_2_1);
|
||||
b1[0x0A] = b2[0x0A] + b2[0x0D];
|
||||
b1[0x0D] = MUL((b2[0x0D] - b2[0x0A]),COS_2_2);
|
||||
b1[0x0B] = b2[0x0B] + b2[0x0C];
|
||||
b1[0x0C] = MULL((b2[0x0C] - b2[0x0B]),COS_2_3);
|
||||
|
||||
b1[0x10] = b2[0x10] + b2[0x17];
|
||||
b1[0x17] = MUL((b2[0x10] - b2[0x17]),COS_2_0);
|
||||
b1[0x11] = b2[0x11] + b2[0x16];
|
||||
b1[0x16] = MUL((b2[0x11] - b2[0x16]),COS_2_1);
|
||||
b1[0x12] = b2[0x12] + b2[0x15];
|
||||
b1[0x15] = MUL((b2[0x12] - b2[0x15]),COS_2_2);
|
||||
b1[0x13] = b2[0x13] + b2[0x14];
|
||||
b1[0x14] = MULL((b2[0x13] - b2[0x14]),COS_2_3);
|
||||
|
||||
b1[0x18] = b2[0x18] + b2[0x1F];
|
||||
b1[0x1F] = MUL((b2[0x1F] - b2[0x18]),COS_2_0);
|
||||
b1[0x19] = b2[0x19] + b2[0x1E];
|
||||
b1[0x1E] = MUL((b2[0x1E] - b2[0x19]),COS_2_1);
|
||||
b1[0x1A] = b2[0x1A] + b2[0x1D];
|
||||
b1[0x1D] = MUL((b2[0x1D] - b2[0x1A]),COS_2_2);
|
||||
b1[0x1B] = b2[0x1B] + b2[0x1C];
|
||||
b1[0x1C] = MULL((b2[0x1C] - b2[0x1B]),COS_2_3);
|
||||
|
||||
|
||||
b2[0x00] = b1[0x00] + b1[0x03];
|
||||
b2[0x03] = MUL((b1[0x00] - b1[0x03]),COS_3_0);
|
||||
b2[0x01] = b1[0x01] + b1[0x02];
|
||||
b2[0x02] = MUL((b1[0x01] - b1[0x02]),COS_3_1);
|
||||
|
||||
b2[0x04] = b1[0x04] + b1[0x07];
|
||||
b2[0x07] = MUL((b1[0x07] - b1[0x04]),COS_3_0);
|
||||
b2[0x05] = b1[0x05] + b1[0x06];
|
||||
b2[0x06] = MUL((b1[0x06] - b1[0x05]),COS_3_1);
|
||||
|
||||
b2[0x08] = b1[0x08] + b1[0x0B];
|
||||
b2[0x0B] = MUL((b1[0x08] - b1[0x0B]),COS_3_0);
|
||||
b2[0x09] = b1[0x09] + b1[0x0A];
|
||||
b2[0x0A] = MUL((b1[0x09] - b1[0x0A]),COS_3_1);
|
||||
|
||||
b2[0x0C] = b1[0x0C] + b1[0x0F];
|
||||
b2[0x0F] = MUL((b1[0x0F] - b1[0x0C]),COS_3_0);
|
||||
b2[0x0D] = b1[0x0D] + b1[0x0E];
|
||||
b2[0x0E] = MUL((b1[0x0E] - b1[0x0D]),COS_3_1);
|
||||
|
||||
b2[0x10] = b1[0x10] + b1[0x13];
|
||||
b2[0x13] = MUL((b1[0x10] - b1[0x13]),COS_3_0);
|
||||
b2[0x11] = b1[0x11] + b1[0x12];
|
||||
b2[0x12] = MUL((b1[0x11] - b1[0x12]),COS_3_1);
|
||||
|
||||
b2[0x14] = b1[0x14] + b1[0x17];
|
||||
b2[0x17] = MUL((b1[0x17] - b1[0x14]),COS_3_0);
|
||||
b2[0x15] = b1[0x15] + b1[0x16];
|
||||
b2[0x16] = MUL((b1[0x16] - b1[0x15]),COS_3_1);
|
||||
|
||||
b2[0x18] = b1[0x18] + b1[0x1B];
|
||||
b2[0x1B] = MUL((b1[0x18] - b1[0x1B]),COS_3_0);
|
||||
b2[0x19] = b1[0x19] + b1[0x1A];
|
||||
b2[0x1A] = MUL((b1[0x19] - b1[0x1A]),COS_3_1);
|
||||
|
||||
b2[0x1C] = b1[0x1C] + b1[0x1F];
|
||||
b2[0x1F] = MUL((b1[0x1F] - b1[0x1C]),COS_3_0);
|
||||
b2[0x1D] = b1[0x1D] + b1[0x1E];
|
||||
b2[0x1E] = MUL((b1[0x1E] - b1[0x1D]),COS_3_1);
|
||||
|
||||
{
|
||||
int i;
|
||||
for(i=0;i<32;i+=4) {
|
||||
b1[i+0x00] = b2[i+0x00] + b2[i+0x01];
|
||||
b1[i+0x01] = MUL((b2[i+0x00] - b2[i+0x01]),COS_4_0);
|
||||
b1[i+0x02] = b2[i+0x02] + b2[i+0x03];
|
||||
b1[i+0x03] = MUL((b2[i+0x03] - b2[i+0x02]),COS_4_0);
|
||||
}
|
||||
}
|
||||
|
||||
b1[0x02] += b1[0x03];
|
||||
b1[0x06] += b1[0x07];
|
||||
b1[0x04] += b1[0x06];
|
||||
b1[0x06] += b1[0x05];
|
||||
b1[0x05] += b1[0x07];
|
||||
|
||||
b1[0x0A] += b1[0x0B];
|
||||
b1[0x0E] += b1[0x0F];
|
||||
b1[0x0C] += b1[0x0E];
|
||||
b1[0x0E] += b1[0x0D];
|
||||
b1[0x0D] += b1[0x0F];
|
||||
|
||||
b1[0x12] += b1[0x13];
|
||||
b1[0x16] += b1[0x17];
|
||||
b1[0x14] += b1[0x16];
|
||||
b1[0x16] += b1[0x15];
|
||||
b1[0x15] += b1[0x17];
|
||||
|
||||
b1[0x1A] += b1[0x1B];
|
||||
b1[0x1E] += b1[0x1F];
|
||||
b1[0x1C] += b1[0x1E];
|
||||
b1[0x1E] += b1[0x1D];
|
||||
b1[0x1D] += b1[0x1F];
|
||||
|
||||
SETOUT(out0,16,b1[0x00]);
|
||||
SETOUT(out0,12,b1[0x04]);
|
||||
SETOUT(out0, 8,b1[0x02]);
|
||||
SETOUT(out0, 4,b1[0x06]);
|
||||
SETOUT(out0, 0,b1[0x01]);
|
||||
SETOUT(out1, 0,b1[0x01]);
|
||||
SETOUT(out1, 4,b1[0x05]);
|
||||
SETOUT(out1, 8,b1[0x03]);
|
||||
SETOUT(out1,12,b1[0x07]);
|
||||
|
||||
b1[0x08] += b1[0x0C];
|
||||
SETOUT(out0,14,b1[0x08]);
|
||||
b1[0x0C] += b1[0x0a];
|
||||
SETOUT(out0,10,b1[0x0C]);
|
||||
b1[0x0A] += b1[0x0E];
|
||||
SETOUT(out0, 6,b1[0x0A]);
|
||||
b1[0x0E] += b1[0x09];
|
||||
SETOUT(out0, 2,b1[0x0E]);
|
||||
b1[0x09] += b1[0x0D];
|
||||
SETOUT(out1, 2,b1[0x09]);
|
||||
b1[0x0D] += b1[0x0B];
|
||||
SETOUT(out1, 6,b1[0x0D]);
|
||||
b1[0x0B] += b1[0x0F];
|
||||
SETOUT(out1,10,b1[0x0B]);
|
||||
SETOUT(out1,14,b1[0x0F]);
|
||||
|
||||
b1[0x18] += b1[0x1C];
|
||||
SETOUT(out0,15,b1[0x10] + b1[0x18]);
|
||||
SETOUT(out0,13,b1[0x18] + b1[0x14]);
|
||||
b1[0x1C] += b1[0x1a];
|
||||
SETOUT(out0,11,b1[0x14] + b1[0x1C]);
|
||||
SETOUT(out0, 9,b1[0x1C] + b1[0x12]);
|
||||
b1[0x1A] += b1[0x1E];
|
||||
SETOUT(out0, 7,b1[0x12] + b1[0x1A]);
|
||||
SETOUT(out0, 5,b1[0x1A] + b1[0x16]);
|
||||
b1[0x1E] += b1[0x19];
|
||||
SETOUT(out0, 3,b1[0x16] + b1[0x1E]);
|
||||
SETOUT(out0, 1,b1[0x1E] + b1[0x11]);
|
||||
b1[0x19] += b1[0x1D];
|
||||
SETOUT(out1, 1,b1[0x11] + b1[0x19]);
|
||||
SETOUT(out1, 3,b1[0x19] + b1[0x15]);
|
||||
b1[0x1D] += b1[0x1B];
|
||||
SETOUT(out1, 5,b1[0x15] + b1[0x1D]);
|
||||
SETOUT(out1, 7,b1[0x1D] + b1[0x13]);
|
||||
b1[0x1B] += b1[0x1F];
|
||||
SETOUT(out1, 9,b1[0x13] + b1[0x1B]);
|
||||
SETOUT(out1,11,b1[0x1B] + b1[0x17]);
|
||||
SETOUT(out1,13,b1[0x17] + b1[0x1F]);
|
||||
SETOUT(out1,15,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_486(int *a,int *b,real *samples)
|
||||
{
|
||||
int bufs[64];
|
||||
int i;
|
||||
|
||||
#ifdef REAL_IS_FIXED
|
||||
#define TOINT(a) ((a) * 32768 / (int)REAL_FACTOR)
|
||||
|
||||
for(i=0;i<32;i++) {
|
||||
bufs[i]=TOINT(samples[i]);
|
||||
}
|
||||
#else
|
||||
int *p = bufs;
|
||||
register double const scale = ((65536.0 * 32) + 1) * 65536.0;
|
||||
|
||||
for(i=0;i<32;i++) {
|
||||
*((double *) (p++)) = scale + *samples++; /* beware on bufs overrun: 8B store from x87 */
|
||||
}
|
||||
#endif
|
||||
|
||||
dct64_1_486(a,b,bufs+32,bufs);
|
||||
}
|
||||
|
||||
259
programs/media/ac97snd/trunk/mpg/decode_i386.c
Normal file
259
programs/media/ac97snd/trunk/mpg/decode_i386.c
Normal file
@ -0,0 +1,259 @@
|
||||
/*
|
||||
decode_i386.c: decode for i386 (really faster?)
|
||||
|
||||
copyright 1995-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
|
||||
see COPYING and AUTHORS files in distribution or http://mpg123.de
|
||||
initially written by Michael Hipp
|
||||
|
||||
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 "config.h"
|
||||
#include "mpg123.h"
|
||||
|
||||
#if 0
|
||||
/* 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; }
|
||||
#else
|
||||
/* new WRITE_SAMPLE */
|
||||
/* keep in mind that we are on known little-endian i386 here and special tricks are allowed... */
|
||||
#define WRITE_SAMPLE(samples,sum,clip) { \
|
||||
double dtemp; int v; /* sizeof(int) == 4 */ \
|
||||
dtemp = ((((65536.0 * 65536.0 * 16)+(65536.0 * 0.5))* 65536.0)) + (sum); \
|
||||
v = ((*(int *)&dtemp) - 0x80000000); \
|
||||
if( v > 32767) { *(samples) = 0x7fff; (clip)++; } \
|
||||
else if( v < -32768) { *(samples) = -0x8000; (clip)++; } \
|
||||
else { *(samples) = v; } \
|
||||
}
|
||||
#endif
|
||||
|
||||
#if 0
|
||||
int synth_1to1_8bit(real *bandPtr,int channel,unsigned char *samples,int *pnt)
|
||||
{
|
||||
short samples_tmp[64];
|
||||
short *tmp1 = samples_tmp + channel;
|
||||
int i,ret;
|
||||
int pnt1 = 0;
|
||||
|
||||
ret = synth_1to1(bandPtr,channel,(unsigned char *)samples_tmp,&pnt1);
|
||||
samples += channel + *pnt;
|
||||
|
||||
for(i=0;i<32;i++) {
|
||||
*samples = conv16to8[*tmp1>>AUSHIFT];
|
||||
samples += 2;
|
||||
tmp1 += 2;
|
||||
}
|
||||
*pnt += 64;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int synth_1to1_8bit_mono(real *bandPtr,unsigned char *samples,int *pnt)
|
||||
{
|
||||
short samples_tmp[64];
|
||||
short *tmp1 = samples_tmp;
|
||||
int i,ret;
|
||||
int pnt1 = 0;
|
||||
|
||||
ret = synth_1to1(bandPtr,0,(unsigned char *)samples_tmp,&pnt1);
|
||||
samples += *pnt;
|
||||
|
||||
for(i=0;i<32;i++) {
|
||||
*samples++ = conv16to8[*tmp1>>AUSHIFT];
|
||||
tmp1+=2;
|
||||
}
|
||||
*pnt += 32;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int synth_1to1_8bit_mono2stereo(real *bandPtr,unsigned char *samples,int *pnt)
|
||||
{
|
||||
short samples_tmp[64];
|
||||
short *tmp1 = samples_tmp;
|
||||
int i,ret;
|
||||
int pnt1 = 0;
|
||||
|
||||
ret = synth_1to1(bandPtr,0,(unsigned char *)samples_tmp,&pnt1);
|
||||
samples += *pnt;
|
||||
|
||||
for(i=0;i<32;i++) {
|
||||
*samples++ = conv16to8[*tmp1>>AUSHIFT];
|
||||
*samples++ = conv16to8[*tmp1>>AUSHIFT];
|
||||
tmp1 += 2;
|
||||
}
|
||||
*pnt += 64;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int synth_1to1_mono(real *bandPtr,unsigned char *samples,int *pnt)
|
||||
{
|
||||
short samples_tmp[64];
|
||||
short *tmp1 = samples_tmp;
|
||||
int i,ret;
|
||||
int pnt1 = 0;
|
||||
|
||||
ret = synth_1to1(bandPtr,0,(unsigned char *) samples_tmp,&pnt1);
|
||||
samples += *pnt;
|
||||
|
||||
for(i=0;i<32;i++) {
|
||||
*( (short *) samples) = *tmp1;
|
||||
samples += 2;
|
||||
tmp1 += 2;
|
||||
}
|
||||
*pnt += 64;
|
||||
|
||||
return ret;
|
||||
}
|
||||
#endif
|
||||
|
||||
int synth_1to1_mono2stereo(real *bandPtr,unsigned char *samples,int *pnt)
|
||||
{
|
||||
int i,ret;
|
||||
|
||||
ret = synth_1to1(bandPtr,0,samples,pnt);
|
||||
samples = samples + *pnt - 128;
|
||||
|
||||
for(i=0;i<32;i++) {
|
||||
((short *)samples)[1] = ((short *)samples)[0];
|
||||
samples+=4;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int synth_1to1(real *bandPtr,int channel,unsigned char *out,int *pnt)
|
||||
{
|
||||
#ifndef PENTIUM_OPT
|
||||
static real buffs[2][2][0x110];
|
||||
static const int step = 2;
|
||||
static int bo = 1;
|
||||
short *samples = (short *) (out + *pnt);
|
||||
|
||||
real *b0,(*buf)[0x110];
|
||||
int clip = 0;
|
||||
int bo1;
|
||||
#endif
|
||||
|
||||
// if(have_eq_settings)
|
||||
// do_equalizer(bandPtr,channel);
|
||||
|
||||
#ifndef PENTIUM_OPT
|
||||
if(!channel) {
|
||||
bo--;
|
||||
bo &= 0xf;
|
||||
buf = buffs[0];
|
||||
}
|
||||
else {
|
||||
samples++;
|
||||
buf = buffs[1];
|
||||
}
|
||||
|
||||
if(bo & 0x1) {
|
||||
b0 = buf[0];
|
||||
bo1 = bo;
|
||||
dct64(buf[1]+((bo+1)&0xf),buf[0]+bo,bandPtr);
|
||||
}
|
||||
else {
|
||||
b0 = buf[1];
|
||||
bo1 = bo+1;
|
||||
dct64(buf[0]+bo,buf[1]+bo+1,bandPtr);
|
||||
}
|
||||
|
||||
{
|
||||
register int j;
|
||||
real *window = decwin + 16 - bo1;
|
||||
|
||||
for (j=16;j;j--,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;
|
||||
#elif defined(USE_MMX)
|
||||
{
|
||||
static short buffs[2][2][0x110];
|
||||
static int bo = 1;
|
||||
short *samples = (short *) (out + *pnt);
|
||||
synth_1to1_MMX(bandPtr, channel, samples, (short *) buffs, &bo);
|
||||
*pnt += 128;
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
{
|
||||
int ret;
|
||||
ret = synth_1to1_pent(bandPtr,channel,out+*pnt);
|
||||
*pnt += 128;
|
||||
return ret;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
255
programs/media/ac97snd/trunk/mpg/decode_i486.c
Normal file
255
programs/media/ac97snd/trunk/mpg/decode_i486.c
Normal file
@ -0,0 +1,255 @@
|
||||
/*
|
||||
decode_i486.c: i486 decode
|
||||
|
||||
copyright 1998-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
|
||||
see COPYING and AUTHORS files in distribution or http://mpg123.de
|
||||
initially written by Fabrice Bellard
|
||||
*/
|
||||
|
||||
/*
|
||||
* Subband Synthesis for MPEG Audio.
|
||||
*
|
||||
* Version optimized for 80486 by using integer arithmetic,
|
||||
* multiplications by shift and add, and by increasing locality in
|
||||
* order to fit the 8KB L1 cache. This code should be compiled with gcc
|
||||
* 2.7.2 or higher.
|
||||
*
|
||||
* Note: this version does not guaranty a good accuracy. The filter
|
||||
* coefficients are quantified on 14 bits.
|
||||
*
|
||||
* (c) 1998 Fabrice Bellard
|
||||
*/
|
||||
|
||||
//#include <stdlib.h>
|
||||
#include "mpg123.h"
|
||||
|
||||
#define FIR_SIZE 16
|
||||
|
||||
#define FIR16_1(pos,c0,c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15) \
|
||||
{\
|
||||
int sum;\
|
||||
sum=(c0)*b0[0]+(c1)*b0[1]+(c2)*b0[2]+(c3)*b0[3]+\
|
||||
(c4)*b0[4]+(c5)*b0[5]+(c6)*b0[6]+(c7)*b0[7]+\
|
||||
(c8)*b0[8]+(c9)*b0[9]+(c10)*b0[10]+(c11)*b0[11]+\
|
||||
(c12)*b0[12]+(c13)*b0[13]+(c14)*b0[14]+(c15)*b0[15];\
|
||||
sum=(sum+(1 << 13))>>14;\
|
||||
if (sum<-32768) sum=-32768;\
|
||||
else if (sum>32767) sum=32767;\
|
||||
samples[2*(pos)]=sum;\
|
||||
b0+=FIR_BUFFER_SIZE;\
|
||||
}
|
||||
|
||||
#define FIR16_2(pos1,c0,c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,\
|
||||
pos2,d0,d1,d2,d3,d4,d5,d6,d7,d8,d9,d10,d11,d12,d13,d14,d15) \
|
||||
{\
|
||||
int sum1,sum2,v;\
|
||||
\
|
||||
v=b0[0];\
|
||||
sum1=(c0)*v;\
|
||||
sum2=(d0)*v;\
|
||||
v=b0[1];\
|
||||
sum1+=(c1)*v;\
|
||||
sum2+=(d1)*v;\
|
||||
v=b0[2];\
|
||||
sum1+=(c2)*v;\
|
||||
sum2+=(d2)*v;\
|
||||
v=b0[3];\
|
||||
sum1+=(c3)*v;\
|
||||
sum2+=(d3)*v;\
|
||||
v=b0[4];\
|
||||
sum1+=(c4)*v;\
|
||||
sum2+=(d4)*v;\
|
||||
v=b0[5];\
|
||||
sum1+=(c5)*v;\
|
||||
sum2+=(d5)*v;\
|
||||
v=b0[6];\
|
||||
sum1+=(c6)*v;\
|
||||
sum2+=(d6)*v;\
|
||||
v=b0[7];\
|
||||
sum1+=(c7)*v;\
|
||||
sum2+=(d7)*v;\
|
||||
v=b0[8];\
|
||||
sum1+=(c8)*v;\
|
||||
sum2+=(d8)*v;\
|
||||
v=b0[9];\
|
||||
sum1+=(c9)*v;\
|
||||
sum2+=(d9)*v;\
|
||||
v=b0[10];\
|
||||
sum1+=(c10)*v;\
|
||||
sum2+=(d10)*v;\
|
||||
v=b0[11];\
|
||||
sum1+=(c11)*v;\
|
||||
sum2+=(d11)*v;\
|
||||
v=b0[12];\
|
||||
sum1+=(c12)*v;\
|
||||
sum2+=(d12)*v;\
|
||||
v=b0[13];\
|
||||
sum1+=(c13)*v;\
|
||||
sum2+=(d13)*v;\
|
||||
v=b0[14];\
|
||||
sum1+=(c14)*v;\
|
||||
sum2+=(d14)*v;\
|
||||
v=b0[15];\
|
||||
sum1+=(c15)*v;\
|
||||
sum2+=(d15)*v;\
|
||||
\
|
||||
sum1=(sum1+(1<<13))>>14;\
|
||||
sum2=(sum2+(1<<13))>>14;\
|
||||
\
|
||||
if (sum1<-32768) sum1=-32768;\
|
||||
else if (sum1>32767) sum1=32767;\
|
||||
samples[(pos1)*2]=sum1;\
|
||||
\
|
||||
if (sum2<-32768) sum2=-32768;\
|
||||
else if (sum2>32767) sum2=32767;\
|
||||
samples[(pos2)*2]=sum2;\
|
||||
b0+=FIR_BUFFER_SIZE;\
|
||||
}
|
||||
|
||||
int synth_1to1_486(real *bandPtr,int channel,unsigned char *out,int nb_blocks)
|
||||
{
|
||||
static int buffs[2][2][17*FIR_BUFFER_SIZE];
|
||||
static int bo[2] = { FIR_SIZE-1, FIR_SIZE-1 };
|
||||
short *samples = (short *) out;
|
||||
int *b0,(*buf)[17*FIR_BUFFER_SIZE];
|
||||
int clip = 0;
|
||||
int block,b,bo_start;
|
||||
|
||||
/* samples address */
|
||||
samples+=channel;
|
||||
|
||||
bo_start=bo[channel];
|
||||
buf = buffs[channel];
|
||||
|
||||
b=bo_start;
|
||||
for(block=0;block<nb_blocks;block++) {
|
||||
|
||||
/* FIR offset */
|
||||
b++;
|
||||
if (b >= FIR_BUFFER_SIZE) {
|
||||
int *p,*q;
|
||||
int c,i,j;
|
||||
|
||||
/* we shift the buffers */
|
||||
for(c=0;c<2;c++) {
|
||||
p=&buf[c][0]+1;
|
||||
q=p+(FIR_BUFFER_SIZE-FIR_SIZE);
|
||||
for(i=0;i<17;i++) {
|
||||
for(j=0;j<FIR_SIZE-1;j++) p[j]=q[j];
|
||||
p+=FIR_BUFFER_SIZE;
|
||||
q+=FIR_BUFFER_SIZE;
|
||||
}
|
||||
}
|
||||
/* we update 'bo' accordingly */
|
||||
b=bo[channel]=FIR_SIZE;
|
||||
}
|
||||
|
||||
if(b & 1) {
|
||||
dct64_486(buf[1]+b,buf[0]+b,bandPtr);
|
||||
} else {
|
||||
dct64_486(buf[0]+b,buf[1]+b,bandPtr);
|
||||
}
|
||||
bandPtr+=32;
|
||||
}
|
||||
bo[channel]=b;
|
||||
|
||||
/* filter bank: part 1 */
|
||||
b=bo_start;
|
||||
for(block=0;block<nb_blocks;block++) {
|
||||
b++;
|
||||
if (b >= FIR_BUFFER_SIZE) b=FIR_SIZE;
|
||||
if(b & 1) {
|
||||
b0 = buf[0] + b - (FIR_SIZE-1);
|
||||
} else {
|
||||
b0 = buf[1] + b - (FIR_SIZE-1);
|
||||
}
|
||||
|
||||
FIR16_1(0,-7,53,-114,509,-1288,1643,-9372,18759,9372,1643,1288,509,114,53,7,0);
|
||||
FIR16_2(1,-6,52,-100,515,-1197,1783,-8910,18748,9834,1489,1379,500,129,54,7,0,
|
||||
31,0,-7,54,-129,500,-1379,1489,-9834,18748,8910,1783,1197,515,100,52,6);
|
||||
FIR16_2(2,-6,50,-86,520,-1106,1910,-8447,18714,10294,1322,1469,488,145,55,8,0,
|
||||
30,0,-8,55,-145,488,-1469,1322,-10294,18714,8447,1910,1106,520,86,50,6);
|
||||
FIR16_2(3,-5,49,-73,521,-1015,2023,-7986,18657,10751,1140,1559,473,161,56,9,0,
|
||||
29,0,-9,56,-161,473,-1559,1140,-10751,18657,7986,2023,1015,521,73,49,5);
|
||||
samples+=64;
|
||||
}
|
||||
samples-=64*nb_blocks;
|
||||
|
||||
/* filter bank: part 2 */
|
||||
|
||||
b=bo_start;
|
||||
for(block=0;block<nb_blocks;block++) {
|
||||
b++;
|
||||
if (b >= FIR_BUFFER_SIZE) b=FIR_SIZE;
|
||||
if(b & 1) {
|
||||
b0 = buf[0] + b - (FIR_SIZE-1) + 4*FIR_BUFFER_SIZE;
|
||||
} else {
|
||||
b0 = buf[1] + b - (FIR_SIZE-1) + 4*FIR_BUFFER_SIZE;
|
||||
}
|
||||
|
||||
FIR16_2(4,-4,47,-61,521,-926,2123,-7528,18578,11205,944,1647,455,177,56,10,0,
|
||||
28,0,-10,56,-177,455,-1647,944,-11205,18578,7528,2123,926,521,61,47,4);
|
||||
FIR16_2(5,-4,45,-49,518,-837,2210,-7072,18477,11654,733,1733,434,194,57,11,0,
|
||||
27,0,-11,57,-194,434,-1733,733,-11654,18477,7072,2210,837,518,49,45,4);
|
||||
FIR16_2(6,-4,44,-38,514,-751,2284,-6620,18353,12097,509,1817,411,212,57,12,0,
|
||||
26,0,-12,57,-212,411,-1817,509,-12097,18353,6620,2284,751,514,38,44,4);
|
||||
FIR16_2(7,-3,42,-27,508,-665,2347,-6173,18208,12534,270,1899,383,229,56,13,0,
|
||||
25,0,-13,56,-229,383,-1899,270,-12534,18208,6173,2347,665,508,27,42,3);
|
||||
|
||||
samples+=64;
|
||||
}
|
||||
samples-=64*nb_blocks;
|
||||
|
||||
/* filter bank: part 3 */
|
||||
|
||||
b=bo_start;
|
||||
for(block=0;block<nb_blocks;block++) {
|
||||
b++;
|
||||
if (b >= FIR_BUFFER_SIZE) b=FIR_SIZE;
|
||||
if(b & 1) {
|
||||
b0 = buf[0] + b - (FIR_SIZE-1) + 8*FIR_BUFFER_SIZE;
|
||||
} else {
|
||||
b0 = buf[1] + b - (FIR_SIZE-1) + 8*FIR_BUFFER_SIZE;
|
||||
}
|
||||
|
||||
FIR16_2(8,-3,40,-18,500,-582,2398,-5732,18042,12963,17,1977,353,247,56,14,0,
|
||||
24,0,-14,56,-247,353,-1977,17,-12963,18042,5732,2398,582,500,18,40,3);
|
||||
FIR16_2(9,-2,38,-9,490,-501,2437,-5297,17855,13383,-249,2052,320,266,55,15,0,
|
||||
23,0,-15,55,-266,320,-2052,-249,-13383,17855,5297,2437,501,490,9,38,2);
|
||||
FIR16_2(10,-2,36,0,479,-423,2465,-4869,17647,13794,-530,2122,282,284,53,17,0,
|
||||
22,0,-17,53,-284,282,-2122,-530,-13794,17647,4869,2465,423,479,0,36,2);
|
||||
FIR16_2(11,-2,34,7,467,-347,2483,-4449,17419,14194,-825,2188,242,302,52,18,0,
|
||||
21,0,-18,52,-302,242,-2188,-825,-14194,17419,4449,2483,347,467,-7,34,2);
|
||||
|
||||
samples+=64;
|
||||
}
|
||||
samples-=64*nb_blocks;
|
||||
|
||||
/* filter bank: part 4 */
|
||||
|
||||
b=bo_start;
|
||||
for(block=0;block<nb_blocks;block++) {
|
||||
b++;
|
||||
if (b >= FIR_BUFFER_SIZE) b=FIR_SIZE;
|
||||
if(b & 1) {
|
||||
b0 = buf[0] + b - (FIR_SIZE-1) + 12*FIR_BUFFER_SIZE;
|
||||
} else {
|
||||
b0 = buf[1] + b - (FIR_SIZE-1) + 12*FIR_BUFFER_SIZE;
|
||||
}
|
||||
|
||||
FIR16_2(12,-2,33,14,454,-273,2491,-4038,17173,14583,-1133,2249,198,320,50,19,0,
|
||||
20,0,-19,50,-320,198,-2249,-1133,-14583,17173,4038,2491,273,454,-14,33,2);
|
||||
FIR16_2(13,-1,31,20,439,-203,2489,-3637,16907,14959,-1454,2304,151,339,47,21,-1,
|
||||
19,-1,-21,47,-339,151,-2304,-1454,-14959,16907,3637,2489,203,439,-20,31,1);
|
||||
FIR16_2(14,-1,29,26,424,-136,2479,-3245,16623,15322,-1788,2354,100,357,44,22,-1,
|
||||
18,-1,-22,44,-357,100,-2354,-1788,-15322,16623,3245,2479,136,424,-26,29,1);
|
||||
FIR16_2(15,-1,27,31,408,-72,2459,-2863,16322,15671,-2135,2396,46,374,40,24,-1,
|
||||
17,-1,-24,40,-374,46,-2396,-2135,-15671,16322,2863,2459,72,408,-31,27,1);
|
||||
FIR16_1(16,-1,0,36,0,-11,0,-2493,0,16004,0,2431,0,391,0,26,0);
|
||||
|
||||
samples+=64;
|
||||
}
|
||||
|
||||
return clip;
|
||||
}
|
||||
|
||||
358
programs/media/ac97snd/trunk/mpg/e_pow.c
Normal file
358
programs/media/ac97snd/trunk/mpg/e_pow.c
Normal file
@ -0,0 +1,358 @@
|
||||
/* @(#)e_pow.c 5.1 93/09/24 */
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
/* Modified by Naohiko Shimizu/Tokai University, Japan 1997/08/25,
|
||||
for performance improvement on pipelined processors.
|
||||
*/
|
||||
|
||||
#if defined(LIBM_SCCS) && !defined(lint)
|
||||
static char rcsid[] = "$NetBSD: e_pow.c,v 1.9 1995/05/12 04:57:32 jtc Exp $";
|
||||
#endif
|
||||
|
||||
/* __ieee754_pow(x,y) return x**y
|
||||
*
|
||||
* n
|
||||
* Method: Let x = 2 * (1+f)
|
||||
* 1. Compute and return log2(x) in two pieces:
|
||||
* log2(x) = w1 + w2,
|
||||
* where w1 has 53-24 = 29 bit trailing zeros.
|
||||
* 2. Perform y*log2(x) = n+y' by simulating muti-precision
|
||||
* arithmetic, where |y'|<=0.5.
|
||||
* 3. Return x**y = 2**n*exp(y'*log2)
|
||||
*
|
||||
* Special cases:
|
||||
* 1. (anything) ** 0 is 1
|
||||
* 2. (anything) ** 1 is itself
|
||||
* 3. (anything) ** NAN is NAN
|
||||
* 4. NAN ** (anything except 0) is NAN
|
||||
* 5. +-(|x| > 1) ** +INF is +INF
|
||||
* 6. +-(|x| > 1) ** -INF is +0
|
||||
* 7. +-(|x| < 1) ** +INF is +0
|
||||
* 8. +-(|x| < 1) ** -INF is +INF
|
||||
* 9. +-1 ** +-INF is NAN
|
||||
* 10. +0 ** (+anything except 0, NAN) is +0
|
||||
* 11. -0 ** (+anything except 0, NAN, odd integer) is +0
|
||||
* 12. +0 ** (-anything except 0, NAN) is +INF
|
||||
* 13. -0 ** (-anything except 0, NAN, odd integer) is +INF
|
||||
* 14. -0 ** (odd integer) = -( +0 ** (odd integer) )
|
||||
* 15. +INF ** (+anything except 0,NAN) is +INF
|
||||
* 16. +INF ** (-anything except 0,NAN) is +0
|
||||
* 17. -INF ** (anything) = -0 ** (-anything)
|
||||
* 18. (-anything) ** (integer) is (-1)**(integer)*(+anything**integer)
|
||||
* 19. (-anything except 0 and inf) ** (non-integer) is NAN
|
||||
*
|
||||
* Accuracy:
|
||||
* pow(x,y) returns x**y nearly rounded. In particular
|
||||
* pow(integer,integer)
|
||||
* always returns the correct integer provided it is
|
||||
* representable.
|
||||
*
|
||||
* Constants :
|
||||
* The hexadecimal values are the intended ones for the following
|
||||
* constants. The decimal values may be used, provided that the
|
||||
* compiler will convert from decimal to binary accurately enough
|
||||
* to produce the hexadecimal values shown.
|
||||
*/
|
||||
|
||||
#include "math.h"
|
||||
#include "math_private.h"
|
||||
#define zero C[0]
|
||||
#define one C[1]
|
||||
#define two C[2]
|
||||
#define two53 C[3]
|
||||
#define huge C[4]
|
||||
#define tiny C[5]
|
||||
#define L1 C[6]
|
||||
#define L2 C[7]
|
||||
#define L3 C[8]
|
||||
#define L4 C[9]
|
||||
#define L5 C[10]
|
||||
#define L6 C[11]
|
||||
#define P1 C[12]
|
||||
#define P2 C[13]
|
||||
#define P3 C[14]
|
||||
#define P4 C[15]
|
||||
#define P5 C[16]
|
||||
#define lg2 C[17]
|
||||
#define lg2_h C[18]
|
||||
#define lg2_l C[19]
|
||||
#define ovt C[20]
|
||||
#define cp C[21]
|
||||
#define cp_h C[22]
|
||||
#define cp_l C[23]
|
||||
#define ivln2 C[24]
|
||||
#define ivln2_h C[25]
|
||||
#define ivln2_l C[26]
|
||||
|
||||
double _cdecl scalbn(double,int);
|
||||
|
||||
#define EXTRACT_WORDS(ix0,ix1,d) \
|
||||
do { \
|
||||
ieee_double_shape_type ew_u; \
|
||||
ew_u.value = (d); \
|
||||
(ix0) = ew_u.parts.msw; \
|
||||
(ix1) = ew_u.parts.lsw; \
|
||||
} while (0)
|
||||
|
||||
#ifdef __STDC__
|
||||
static const double
|
||||
#else
|
||||
static double
|
||||
#endif
|
||||
bp[] = {1.0, 1.5,},
|
||||
dp_h[] = { 0.0, 5.84962487220764160156e-01,}, /* 0x3FE2B803, 0x40000000 */
|
||||
dp_l[] = { 0.0, 1.35003920212974897128e-08,}, /* 0x3E4CFDEB, 0x43CFD006 */
|
||||
C[] = {
|
||||
0.0,
|
||||
1.0,
|
||||
2.0,
|
||||
9007199254740992.0 ,
|
||||
1.0e300,
|
||||
1.0e-300,
|
||||
5.99999999999994648725e-01 ,
|
||||
4.28571428578550184252e-01 ,
|
||||
3.33333329818377432918e-01 ,
|
||||
2.72728123808534006489e-01 ,
|
||||
2.30660745775561754067e-01 ,
|
||||
2.06975017800338417784e-01 ,
|
||||
1.66666666666666019037e-01 ,
|
||||
-2.77777777770155933842e-03 ,
|
||||
6.61375632143793436117e-05 ,
|
||||
-1.65339022054652515390e-06 ,
|
||||
4.13813679705723846039e-08 ,
|
||||
6.93147180559945286227e-01 ,
|
||||
6.93147182464599609375e-01 ,
|
||||
-1.90465429995776804525e-09 ,
|
||||
8.0085662595372944372e-0017 ,
|
||||
9.61796693925975554329e-01 ,
|
||||
9.61796700954437255859e-01 ,
|
||||
-7.02846165095275826516e-09 ,
|
||||
1.44269504088896338700e+00 ,
|
||||
1.44269502162933349609e+00 ,
|
||||
1.92596299112661746887e-08 };
|
||||
|
||||
double pow_test(x,y)
|
||||
double x, y;
|
||||
{
|
||||
double z,ax,z_h,z_l,p_h,p_l;
|
||||
double y1,t1,t2,r,s,t,u,v,w, t12,t14,r_1,r_2,r_3;
|
||||
int32_t i,j,k,yisint,n;
|
||||
int32_t hx,hy,ix,iy;
|
||||
u_int32_t lx,ly;
|
||||
|
||||
EXTRACT_WORDS(hx,lx,x);
|
||||
EXTRACT_WORDS(hy,ly,y);
|
||||
ix = hx&0x7fffffff; iy = hy&0x7fffffff;
|
||||
|
||||
/* y==zero: x**0 = 1 */
|
||||
if((iy|ly)==0) return C[1];
|
||||
|
||||
/* +-NaN return x+y */
|
||||
if(ix > 0x7ff00000 || ((ix==0x7ff00000)&&(lx!=0)) ||
|
||||
iy > 0x7ff00000 || ((iy==0x7ff00000)&&(ly!=0)))
|
||||
return x+y;
|
||||
|
||||
/* determine if y is an odd int when x < 0
|
||||
* yisint = 0 ... y is not an integer
|
||||
* yisint = 1 ... y is an odd int
|
||||
* yisint = 2 ... y is an even int
|
||||
*/
|
||||
yisint = 0;
|
||||
if(hx<0) {
|
||||
if(iy>=0x43400000) yisint = 2; /* even integer y */
|
||||
else if(iy>=0x3ff00000) {
|
||||
k = (iy>>20)-0x3ff; /* exponent */
|
||||
if(k>20) {
|
||||
j = ly>>(52-k);
|
||||
if((u_int32_t)(j<<(52-k))==ly) yisint = 2-(j&1);
|
||||
} else if(ly==0) {
|
||||
j = iy>>(20-k);
|
||||
if((int32_t)(j<<(20-k))==iy) yisint = 2-(j&1);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* special value of y */
|
||||
if(ly==0) {
|
||||
if (iy==0x7ff00000) { /* y is +-inf */
|
||||
if(((ix-0x3ff00000)|lx)==0)
|
||||
return y - y; /* inf**+-1 is NaN */
|
||||
else if (ix >= 0x3ff00000)/* (|x|>1)**+-inf = inf,0 */
|
||||
return (hy>=0)? y: C[0];
|
||||
else /* (|x|<1)**-,+inf = inf,0 */
|
||||
return (hy<0)?-y: C[0];
|
||||
}
|
||||
if(iy==0x3ff00000) { /* y is +-1 */
|
||||
if(hy<0) return C[1]/x; else return x;
|
||||
}
|
||||
if(hy==0x40000000) return x*x; /* y is 2 */
|
||||
if(hy==0x3fe00000) { /* y is 0.5 */
|
||||
if(hx>=0) /* x >= +0 */
|
||||
return sqrt(x);
|
||||
}
|
||||
}
|
||||
|
||||
ax = fabs(x);
|
||||
/* special value of x */
|
||||
if(lx==0) {
|
||||
if(ix==0x7ff00000||ix==0||ix==0x3ff00000){
|
||||
z = ax; /*x is +-0,+-inf,+-1*/
|
||||
if(hy<0) z = C[1]/z; /* z = (1/|x|) */
|
||||
if(hx<0) {
|
||||
if(((ix-0x3ff00000)|yisint)==0) {
|
||||
z = (z-z)/(z-z); /* (-1)**non-int is NaN */
|
||||
} else if(yisint==1)
|
||||
z = -z; /* (x<0)**odd = -(|x|**odd) */
|
||||
}
|
||||
return z;
|
||||
}
|
||||
}
|
||||
|
||||
/* (x<0)**(non-int) is NaN */
|
||||
if(((((u_int32_t)hx>>31)-1)|yisint)==0) return (x-x)/(x-x);
|
||||
|
||||
/* |y| is huge */
|
||||
if(iy>0x41e00000) { /* if |y| > 2**31 */
|
||||
if(iy>0x43f00000){ /* if |y| > 2**64, must o/uflow */
|
||||
if(ix<=0x3fefffff) return (hy<0)? C[4]*C[4]:C[5]*C[5];
|
||||
if(ix>=0x3ff00000) return (hy>0)? C[4]*C[4]:C[5]*C[5];
|
||||
}
|
||||
/* over/underflow if x is not close to one */
|
||||
if(ix<0x3fefffff) return (hy<0)? C[4]*C[4]:C[5]*C[5];
|
||||
if(ix>0x3ff00000) return (hy>0)? C[4]*C[4]:C[5]*C[5];
|
||||
/* now |1-x| is tiny <= 2**-20, suffice to compute
|
||||
log(x) by x-x^2/2+x^3/3-x^4/4 */
|
||||
t = x-1; /* t has 20 trailing zeros */
|
||||
w = (t*t)*(0.5-t*(0.3333333333333333333333-t*0.25));
|
||||
u = C[25]*t; /* ivln2_h has 21 sig. bits */
|
||||
v = t*C[26]-w*C[24];
|
||||
t1 = u+v;
|
||||
SET_LOW_WORD(t1,0);
|
||||
t2 = v-(t1-u);
|
||||
} else {
|
||||
double s2,s_h,s_l,t_h,t_l,s22,s24,s26,r1,r2,r3;
|
||||
n = 0;
|
||||
/* take care subnormal number */
|
||||
if(ix<0x00100000)
|
||||
{ax *= C[3]; n -= 53; GET_HIGH_WORD(ix,ax); }
|
||||
n += ((ix)>>20)-0x3ff;
|
||||
j = ix&0x000fffff;
|
||||
/* determine interval */
|
||||
ix = j|0x3ff00000; /* normalize ix */
|
||||
if(j<=0x3988E) k=0; /* |x|<sqrt(3/2) */
|
||||
else if(j<0xBB67A) k=1; /* |x|<sqrt(3) */
|
||||
else {k=0;n+=1;ix -= 0x00100000;}
|
||||
SET_HIGH_WORD(ax,ix);
|
||||
|
||||
/* compute s = s_h+s_l = (x-1)/(x+1) or (x-1.5)/(x+1.5) */
|
||||
u = ax-bp[k]; /* bp[0]=1.0, bp[1]=1.5 */
|
||||
v = C[1]/(ax+bp[k]);
|
||||
s = u*v;
|
||||
s_h = s;
|
||||
SET_LOW_WORD(s_h,0);
|
||||
/* t_h=ax+bp[k] High */
|
||||
t_h = C[0];
|
||||
SET_HIGH_WORD(t_h,((ix>>1)|0x20000000)+0x00080000+(k<<18));
|
||||
t_l = ax - (t_h-bp[k]);
|
||||
s_l = v*((u-s_h*t_h)-s_h*t_l);
|
||||
/* compute log(ax) */
|
||||
s2 = s*s;
|
||||
#ifdef DO_NOT_USE_THIS
|
||||
r = s2*s2*(L1+s2*(L2+s2*(L3+s2*(L4+s2*(L5+s2*L6)))));
|
||||
#else
|
||||
r1 = C[10]+s2*C[11]; s22=s2*s2;
|
||||
r2 = C[8]+s2*C[9]; s24=s22*s22;
|
||||
r3 = C[6]+s2*C[7]; s26=s24*s22;
|
||||
r = r3*s22 + r2*s24 + r1*s26;
|
||||
#endif
|
||||
r += s_l*(s_h+s);
|
||||
s2 = s_h*s_h;
|
||||
t_h = 3.0+s2+r;
|
||||
SET_LOW_WORD(t_h,0);
|
||||
t_l = r-((t_h-3.0)-s2);
|
||||
/* u+v = s*(1+...) */
|
||||
u = s_h*t_h;
|
||||
v = s_l*t_h+t_l*s;
|
||||
/* 2/(3log2)*(s+...) */
|
||||
p_h = u+v;
|
||||
SET_LOW_WORD(p_h,0);
|
||||
p_l = v-(p_h-u);
|
||||
z_h = C[22]*p_h; /* cp_h+cp_l = 2/(3*log2) */
|
||||
z_l = C[23]*p_h+p_l*C[21]+dp_l[k];
|
||||
/* log2(ax) = (s+..)*2/(3*log2) = n + dp_h + z_h + z_l */
|
||||
t = (double)n;
|
||||
t1 = (((z_h+z_l)+dp_h[k])+t);
|
||||
SET_LOW_WORD(t1,0);
|
||||
t2 = z_l-(((t1-t)-dp_h[k])-z_h);
|
||||
}
|
||||
|
||||
s = C[1]; /* s (sign of result -ve**odd) = -1 else = 1 */
|
||||
if(((((u_int32_t)hx>>31)-1)|(yisint-1))==0)
|
||||
s = -C[1];/* (-ve)**(odd int) */
|
||||
|
||||
/* split up y into y1+y2 and compute (y1+y2)*(t1+t2) */
|
||||
y1 = y;
|
||||
SET_LOW_WORD(y1,0);
|
||||
p_l = (y-y1)*t1+y*t2;
|
||||
p_h = y1*t1;
|
||||
z = p_l+p_h;
|
||||
EXTRACT_WORDS(j,i,z);
|
||||
if (j>=0x40900000) { /* z >= 1024 */
|
||||
if(((j-0x40900000)|i)!=0) /* if z > 1024 */
|
||||
return s*C[4]*C[4]; /* overflow */
|
||||
else {
|
||||
if(p_l+C[20]>z-p_h) return s*C[4]*C[4]; /* overflow */
|
||||
}
|
||||
} else if((j&0x7fffffff)>=0x4090cc00 ) { /* z <= -1075 */
|
||||
if(((j-0xc090cc00)|i)!=0) /* z < -1075 */
|
||||
return s*C[5]*C[5]; /* underflow */
|
||||
else {
|
||||
if(p_l<=z-p_h) return s*C[5]*C[5]; /* underflow */
|
||||
}
|
||||
}
|
||||
/*
|
||||
* compute 2**(p_h+p_l)
|
||||
*/
|
||||
i = j&0x7fffffff;
|
||||
k = (i>>20)-0x3ff;
|
||||
n = 0;
|
||||
if(i>0x3fe00000) { /* if |z| > 0.5, set n = [z+0.5] */
|
||||
n = j+(0x00100000>>(k+1));
|
||||
k = ((n&0x7fffffff)>>20)-0x3ff; /* new k for n */
|
||||
t = C[0];
|
||||
SET_HIGH_WORD(t,n&~(0x000fffff>>k));
|
||||
n = ((n&0x000fffff)|0x00100000)>>(20-k);
|
||||
if(j<0) n = -n;
|
||||
p_h -= t;
|
||||
}
|
||||
t = p_l+p_h;
|
||||
SET_LOW_WORD(t,0);
|
||||
u = t*C[18];
|
||||
v = (p_l-(t-p_h))*C[17]+t*C[19];
|
||||
z = u+v;
|
||||
w = v-(z-u);
|
||||
t = z*z;
|
||||
#ifdef DO_NOT_USE_THIS
|
||||
t1 = z - t*(C[12]+t*(C[13]+t*(C[14]+t*(C[15]+t*C[16]))));
|
||||
#else
|
||||
r_1 = C[15]+t*C[16]; t12 = t*t;
|
||||
r_2 = C[13]+t*C[14]; t14 = t12*t12;
|
||||
r_3 = t*C[12];
|
||||
t1 = z - r_3 - t12*r_2 - t14*r_1;
|
||||
#endif
|
||||
r = (z*t1)/(t1-C[2])-(w+z*w);
|
||||
z = C[1]-(r-z);
|
||||
GET_HIGH_WORD(j,z);
|
||||
j += (n<<20);
|
||||
if((j>>20)<=0) z = scalbn(z,n); /* subnormal output */
|
||||
else SET_HIGH_WORD(z,j);
|
||||
return s*z;
|
||||
}
|
||||
134
programs/media/ac97snd/trunk/mpg/getbits.c
Normal file
134
programs/media/ac97snd/trunk/mpg/getbits.c
Normal file
@ -0,0 +1,134 @@
|
||||
/*
|
||||
getbits
|
||||
|
||||
copyright ?-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
|
||||
see COPYING and AUTHORS files in distribution or http://mpg123.de
|
||||
initially written by Michael Hipp
|
||||
*/
|
||||
|
||||
#include "mpg123.h"
|
||||
|
||||
#if 0
|
||||
static void check_buffer_range(int size)
|
||||
{
|
||||
int pos = (bsi.wordpointer-bsbuf) + (size>>3);
|
||||
|
||||
if( pos >= fsizeold) {
|
||||
fprintf(stderr,"Pointer out of range (%d,%d)!\n",pos,fsizeold);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
void backbits(int number_of_bits)
|
||||
{
|
||||
bsi.bitindex -= number_of_bits;
|
||||
bsi.wordpointer += (bsi.bitindex>>3);
|
||||
bsi.bitindex &= 0x7;
|
||||
}
|
||||
|
||||
int getbitoffset(void)
|
||||
{
|
||||
return (-bsi.bitindex)&0x7;
|
||||
}
|
||||
|
||||
int getbyte(void)
|
||||
{
|
||||
#ifdef DEBUG_GETBITS
|
||||
if(bsi.bitindex)
|
||||
fprintf(stderr,"getbyte called unsynched!\n");
|
||||
#endif
|
||||
return *bsi.wordpointer++;
|
||||
}
|
||||
|
||||
unsigned int getbits(int number_of_bits)
|
||||
{
|
||||
unsigned long rval;
|
||||
|
||||
#ifdef DEBUG_GETBITS
|
||||
fprintf(stderr,"g%d",number_of_bits);
|
||||
#endif
|
||||
|
||||
if(!number_of_bits)
|
||||
return 0;
|
||||
|
||||
#if 0
|
||||
check_buffer_range(number_of_bits+bsi.bitindex);
|
||||
#endif
|
||||
|
||||
{
|
||||
rval = bsi.wordpointer[0];
|
||||
rval <<= 8;
|
||||
rval |= bsi.wordpointer[1];
|
||||
rval <<= 8;
|
||||
rval |= bsi.wordpointer[2];
|
||||
|
||||
rval <<= bsi.bitindex;
|
||||
rval &= 0xffffff;
|
||||
|
||||
bsi.bitindex += number_of_bits;
|
||||
|
||||
rval >>= (24-number_of_bits);
|
||||
|
||||
bsi.wordpointer += (bsi.bitindex>>3);
|
||||
bsi.bitindex &= 7;
|
||||
}
|
||||
|
||||
#ifdef DEBUG_GETBITS
|
||||
fprintf(stderr,":%x ",rval);
|
||||
#endif
|
||||
|
||||
return rval;
|
||||
}
|
||||
|
||||
unsigned int getbits_fast(int number_of_bits)
|
||||
{
|
||||
unsigned int rval;
|
||||
#ifdef DEBUG_GETBITS
|
||||
fprintf(stderr,"g%d",number_of_bits);
|
||||
#endif
|
||||
|
||||
#if 0
|
||||
check_buffer_range(number_of_bits+bsi.bitindex);
|
||||
#endif
|
||||
|
||||
rval = (unsigned char) (bsi.wordpointer[0] << bsi.bitindex);
|
||||
rval |= ((unsigned int) bsi.wordpointer[1]<<bsi.bitindex)>>8;
|
||||
rval <<= number_of_bits;
|
||||
rval >>= 8;
|
||||
|
||||
bsi.bitindex += number_of_bits;
|
||||
|
||||
bsi.wordpointer += (bsi.bitindex>>3);
|
||||
bsi.bitindex &= 7;
|
||||
|
||||
#ifdef DEBUG_GETBITS
|
||||
fprintf(stderr,":%x ",rval);
|
||||
#endif
|
||||
return rval;
|
||||
}
|
||||
|
||||
unsigned int get1bit(void)
|
||||
{
|
||||
unsigned char rval;
|
||||
|
||||
#ifdef DEBUG_GETBITS
|
||||
fprintf(stderr,"g%d",1);
|
||||
#endif
|
||||
|
||||
#if 0
|
||||
check_buffer_range(1+bsi.bitindex);
|
||||
#endif
|
||||
|
||||
rval = *bsi.wordpointer << bsi.bitindex;
|
||||
|
||||
bsi.bitindex++;
|
||||
bsi.wordpointer += (bsi.bitindex>>3);
|
||||
bsi.bitindex &= 7;
|
||||
|
||||
#ifdef DEBUG_GETBITS
|
||||
fprintf(stderr,":%d ",rval>>7);
|
||||
#endif
|
||||
|
||||
return rval>>7;
|
||||
}
|
||||
|
||||
45
programs/media/ac97snd/trunk/mpg/getbits.h
Normal file
45
programs/media/ac97snd/trunk/mpg/getbits.h
Normal file
@ -0,0 +1,45 @@
|
||||
/*
|
||||
getbits
|
||||
|
||||
copyright ?-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
|
||||
see COPYING and AUTHORS files in distribution or http://mpg123.de
|
||||
initially written by Michael Hipp
|
||||
*/
|
||||
|
||||
#ifndef _MPG123_GETBITS_H_
|
||||
#define _MPG123_GETBITS_H_
|
||||
|
||||
/* that's the same file as getits.c but with defines to
|
||||
force inlining */
|
||||
|
||||
static unsigned long rval;
|
||||
static unsigned char rval_uc;
|
||||
|
||||
#define backbits(nob) ((void)( \
|
||||
bsi.bitindex -= nob, \
|
||||
bsi.wordpointer += (bsi.bitindex>>3), \
|
||||
bsi.bitindex &= 0x7 ))
|
||||
|
||||
#define getbitoffset() ((-bsi.bitindex)&0x7)
|
||||
#define getbyte() (*bsi.wordpointer++)
|
||||
|
||||
#define getbits(nob) ( \
|
||||
rval = bsi.wordpointer[0], rval <<= 8, rval |= bsi.wordpointer[1], \
|
||||
rval <<= 8, rval |= bsi.wordpointer[2], rval <<= bsi.bitindex, \
|
||||
rval &= 0xffffff, bsi.bitindex += nob, \
|
||||
rval >>= (24-nob), bsi.wordpointer += (bsi.bitindex>>3), \
|
||||
bsi.bitindex &= 7,rval)
|
||||
|
||||
#define getbits_fast(nob) ( \
|
||||
rval = (unsigned char) (bsi.wordpointer[0] << bsi.bitindex), \
|
||||
rval |= ((unsigned long) bsi.wordpointer[1]<<bsi.bitindex)>>8, \
|
||||
rval <<= nob, rval >>= 8, \
|
||||
bsi.bitindex += nob, bsi.wordpointer += (bsi.bitindex>>3), \
|
||||
bsi.bitindex &= 7, rval )
|
||||
|
||||
#define get1bit() ( \
|
||||
rval_uc = *bsi.wordpointer << bsi.bitindex, bsi.bitindex++, \
|
||||
bsi.wordpointer += (bsi.bitindex>>3), bsi.bitindex &= 7, rval_uc>>7 )
|
||||
|
||||
|
||||
#endif
|
||||
340
programs/media/ac97snd/trunk/mpg/huffman.h
Normal file
340
programs/media/ac97snd/trunk/mpg/huffman.h
Normal file
@ -0,0 +1,340 @@
|
||||
/*
|
||||
huffman.h: huffman tables ... recalcualted to work with optimzed decoder scheme (MH)
|
||||
|
||||
copyright ?-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
|
||||
see COPYING and AUTHORS files in distribution or http://mpg123.de
|
||||
initially written by Michael Hipp
|
||||
|
||||
probably we could save a few bytes of memory, because the
|
||||
smaller tables are often the part of a bigger table
|
||||
*/
|
||||
|
||||
|
||||
#ifndef _MPG123_HUFFMAN_H_
|
||||
#define _MPG123_HUFFMAN_H_
|
||||
|
||||
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 }
|
||||
};
|
||||
|
||||
|
||||
#endif
|
||||
164
programs/media/ac97snd/trunk/mpg/l2tables.h
Normal file
164
programs/media/ac97snd/trunk/mpg/l2tables.h
Normal file
@ -0,0 +1,164 @@
|
||||
/*
|
||||
l2tables.h: Layer 2 Alloc tables
|
||||
|
||||
copyright ?-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
|
||||
see COPYING and AUTHORS files in distribution or http://mpg123.de
|
||||
initially written by Michael Hipp
|
||||
|
||||
most other tables are calculated on program start (which is (of course) not ISO-conform)
|
||||
Layer-3 huffman table is in huffman.h
|
||||
*/
|
||||
|
||||
|
||||
#ifndef _MPG123_L2TABLES_H_
|
||||
#define _MPG123_L2TABLES_H_
|
||||
|
||||
struct al_table alloc_0[] = {
|
||||
{4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511},
|
||||
{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767},
|
||||
{4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511},
|
||||
{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767},
|
||||
{4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511},
|
||||
{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{2,0},{5,3},{7,5},{16,-32767},
|
||||
{2,0},{5,3},{7,5},{16,-32767},
|
||||
{2,0},{5,3},{7,5},{16,-32767},
|
||||
{2,0},{5,3},{7,5},{16,-32767} };
|
||||
|
||||
struct al_table alloc_1[] = {
|
||||
{4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511},
|
||||
{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767},
|
||||
{4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511},
|
||||
{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767},
|
||||
{4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511},
|
||||
{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767},
|
||||
{2,0},{5,3},{7,5},{16,-32767},
|
||||
{2,0},{5,3},{7,5},{16,-32767},
|
||||
{2,0},{5,3},{7,5},{16,-32767},
|
||||
{2,0},{5,3},{7,5},{16,-32767},
|
||||
{2,0},{5,3},{7,5},{16,-32767},
|
||||
{2,0},{5,3},{7,5},{16,-32767},
|
||||
{2,0},{5,3},{7,5},{16,-32767} };
|
||||
|
||||
struct al_table alloc_2[] = {
|
||||
{4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},
|
||||
{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},
|
||||
{4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},
|
||||
{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63} };
|
||||
|
||||
struct al_table alloc_3[] = {
|
||||
{4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},
|
||||
{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},
|
||||
{4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},
|
||||
{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63} };
|
||||
|
||||
struct al_table alloc_4[] = {
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},
|
||||
{4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},
|
||||
{9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9},
|
||||
{2,0},{5,3},{7,5},{10,9} };
|
||||
|
||||
#endif
|
||||
|
||||
151
programs/media/ac97snd/trunk/mpg/layer1.c
Normal file
151
programs/media/ac97snd/trunk/mpg/layer1.c
Normal file
@ -0,0 +1,151 @@
|
||||
/*
|
||||
layer1.c: the layer 1 decoder
|
||||
|
||||
copyright 1995-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
|
||||
see COPYING and AUTHORS files in distribution or http://mpg123.de
|
||||
initially written by Michael Hipp
|
||||
|
||||
may have a few bugs after last optimization ...
|
||||
*/
|
||||
|
||||
#include "mpg123.h"
|
||||
|
||||
void I_step_one(unsigned int balloc[], unsigned int scale_index[2][SBLIMIT],struct frame *fr)
|
||||
{
|
||||
unsigned int *ba=balloc;
|
||||
unsigned int *sca = (unsigned int *) scale_index;
|
||||
|
||||
if(fr->stereo == 2) {
|
||||
int i;
|
||||
int jsbound = fr->jsbound;
|
||||
for (i=0;i<jsbound;i++) {
|
||||
*ba++ = getbits(4);
|
||||
*ba++ = getbits(4);
|
||||
}
|
||||
for (i=jsbound;i<SBLIMIT;i++)
|
||||
*ba++ = getbits(4);
|
||||
|
||||
ba = balloc;
|
||||
|
||||
for (i=0;i<jsbound;i++) {
|
||||
if ((*ba++))
|
||||
*sca++ = getbits(6);
|
||||
if ((*ba++))
|
||||
*sca++ = getbits(6);
|
||||
}
|
||||
for (i=jsbound;i<SBLIMIT;i++)
|
||||
if ((*ba++)) {
|
||||
*sca++ = getbits(6);
|
||||
*sca++ = getbits(6);
|
||||
}
|
||||
}
|
||||
else {
|
||||
int i;
|
||||
for (i=0;i<SBLIMIT;i++)
|
||||
*ba++ = getbits(4);
|
||||
ba = balloc;
|
||||
for (i=0;i<SBLIMIT;i++)
|
||||
if ((*ba++))
|
||||
*sca++ = getbits(6);
|
||||
}
|
||||
}
|
||||
|
||||
void I_step_two(real fraction[2][SBLIMIT],unsigned int balloc[2*SBLIMIT],
|
||||
unsigned int scale_index[2][SBLIMIT],struct frame *fr)
|
||||
{
|
||||
int i,n;
|
||||
int smpb[2*SBLIMIT]; /* values: 0-65535 */
|
||||
int *sample;
|
||||
register unsigned int *ba;
|
||||
register unsigned int *sca = (unsigned int *) scale_index;
|
||||
|
||||
if(fr->stereo == 2) {
|
||||
int jsbound = fr->jsbound;
|
||||
register real *f0 = fraction[0];
|
||||
register real *f1 = fraction[1];
|
||||
ba = balloc;
|
||||
for (sample=smpb,i=0;i<jsbound;i++) {
|
||||
if ((n = *ba++))
|
||||
*sample++ = getbits(n+1);
|
||||
if ((n = *ba++))
|
||||
*sample++ = getbits(n+1);
|
||||
}
|
||||
for (i=jsbound;i<SBLIMIT;i++)
|
||||
if ((n = *ba++))
|
||||
*sample++ = getbits(n+1);
|
||||
|
||||
ba = balloc;
|
||||
for (sample=smpb,i=0;i<jsbound;i++) {
|
||||
if((n=*ba++))
|
||||
*f0++ = (real) ( ((-1)<<n) + (*sample++) + 1) * muls[n+1][*sca++];
|
||||
else
|
||||
*f0++ = 0.0;
|
||||
if((n=*ba++))
|
||||
*f1++ = (real) ( ((-1)<<n) + (*sample++) + 1) * muls[n+1][*sca++];
|
||||
else
|
||||
*f1++ = 0.0;
|
||||
}
|
||||
for (i=jsbound;i<SBLIMIT;i++) {
|
||||
if ((n=*ba++)) {
|
||||
real samp = ( ((-1)<<n) + (*sample++) + 1);
|
||||
*f0++ = samp * muls[n+1][*sca++];
|
||||
*f1++ = samp * muls[n+1][*sca++];
|
||||
}
|
||||
else
|
||||
*f0++ = *f1++ = 0.0;
|
||||
}
|
||||
for(i=fr->down_sample_sblimit;i<32;i++)
|
||||
fraction[0][i] = fraction[1][i] = 0.0;
|
||||
}
|
||||
else {
|
||||
register real *f0 = fraction[0];
|
||||
ba = balloc;
|
||||
for (sample=smpb,i=0;i<SBLIMIT;i++)
|
||||
if ((n = *ba++))
|
||||
*sample++ = getbits(n+1);
|
||||
ba = balloc;
|
||||
for (sample=smpb,i=0;i<SBLIMIT;i++) {
|
||||
if((n=*ba++))
|
||||
*f0++ = (real) ( ((-1)<<n) + (*sample++) + 1) * muls[n+1][*sca++];
|
||||
else
|
||||
*f0++ = 0.0;
|
||||
}
|
||||
for(i=fr->down_sample_sblimit;i<32;i++)
|
||||
fraction[0][i] = 0.0;
|
||||
}
|
||||
}
|
||||
|
||||
int do_layer1(struct frame *fr,byte *pcm_sample, int *pcm_point)
|
||||
{
|
||||
int clip=0;
|
||||
int i,stereo = fr->stereo;
|
||||
unsigned int balloc[2*SBLIMIT];
|
||||
unsigned int scale_index[2][SBLIMIT];
|
||||
real fraction[2][SBLIMIT];
|
||||
int single = fr->single;
|
||||
|
||||
fr->jsbound = (fr->mode == MPG_MD_JOINT_STEREO) ? (fr->mode_ext<<2)+4 : 32;
|
||||
|
||||
if(stereo == 1 || single == 3)
|
||||
single = 0;
|
||||
|
||||
I_step_one(balloc,scale_index,fr);
|
||||
|
||||
for (i=0;i<SCALE_BLOCK;i++)
|
||||
{
|
||||
I_step_two(fraction,balloc,scale_index,fr);
|
||||
|
||||
if(single >= 0)
|
||||
{
|
||||
clip += (fr->synth_mono)( (real *) fraction[single],pcm_sample,pcm_point);
|
||||
}
|
||||
else {
|
||||
int p1=*pcm_point;
|
||||
clip += (fr->synth)( (real *) fraction[0],0,pcm_sample,&p1);
|
||||
clip += (fr->synth)( (real *) fraction[1],1,pcm_sample,pcm_point);
|
||||
}
|
||||
}
|
||||
return clip;
|
||||
}
|
||||
|
||||
|
||||
306
programs/media/ac97snd/trunk/mpg/layer2.c
Normal file
306
programs/media/ac97snd/trunk/mpg/layer2.c
Normal file
@ -0,0 +1,306 @@
|
||||
/*
|
||||
layer2.c: the layer 2 decoder, root of mpg123
|
||||
|
||||
copyright 1994-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
|
||||
see COPYING and AUTHORS files in distribution or http://mpg123.de
|
||||
initially written by Michael Hipp
|
||||
|
||||
mpg123 started as mp2 decoder a long time ago...
|
||||
*/
|
||||
|
||||
#include "mpg123.h"
|
||||
#include "l2tables.h"
|
||||
|
||||
static int grp_3tab[32 * 3] = { 0, }; /* used: 27 */
|
||||
static int grp_5tab[128 * 3] = { 0, }; /* used: 125 */
|
||||
static int grp_9tab[1024 * 3] = { 0, }; /* used: 729 */
|
||||
|
||||
real muls[27][64]; /* also used by layer 1 */
|
||||
|
||||
void init_layer2(void)
|
||||
{
|
||||
static double mulmul[27] = {
|
||||
0.0 , -2.0/3.0 , 2.0/3.0 ,
|
||||
2.0/7.0 , 2.0/15.0 , 2.0/31.0, 2.0/63.0 , 2.0/127.0 , 2.0/255.0 ,
|
||||
2.0/511.0 , 2.0/1023.0 , 2.0/2047.0 , 2.0/4095.0 , 2.0/8191.0 ,
|
||||
2.0/16383.0 , 2.0/32767.0 , 2.0/65535.0 ,
|
||||
-4.0/5.0 , -2.0/5.0 , 2.0/5.0, 4.0/5.0 ,
|
||||
-8.0/9.0 , -4.0/9.0 , -2.0/9.0 , 2.0/9.0 , 4.0/9.0 , 8.0/9.0 };
|
||||
static int base[3][9] = {
|
||||
{ 1 , 0, 2 , } ,
|
||||
{ 17, 18, 0 , 19, 20 , } ,
|
||||
{ 21, 1, 22, 23, 0, 24, 25, 2, 26 } };
|
||||
int i,j,k,l,len;
|
||||
real *table;
|
||||
static int tablen[3] = { 3 , 5 , 9 };
|
||||
static int *itable,*tables[3] = { grp_3tab , grp_5tab , grp_9tab };
|
||||
|
||||
for(i=0;i<3;i++)
|
||||
{
|
||||
itable = tables[i];
|
||||
len = tablen[i];
|
||||
for(j=0;j<len;j++)
|
||||
for(k=0;k<len;k++)
|
||||
for(l=0;l<len;l++)
|
||||
{
|
||||
*itable++ = base[i][l];
|
||||
*itable++ = base[i][k];
|
||||
*itable++ = base[i][j];
|
||||
}
|
||||
}
|
||||
|
||||
for(k=0;k<27;k++)
|
||||
{
|
||||
double m=mulmul[k];
|
||||
table = muls[k];
|
||||
#ifdef USE_MMX
|
||||
if(!param.down_sample)
|
||||
for(j=3,i=0;i<63;i++,j--)
|
||||
*table++ = 16384 * m * pow(2.0,(double) j / 3.0);
|
||||
else
|
||||
#endif
|
||||
for(j=3,i=0;i<63;i++,j--)
|
||||
*table++ = m * pow_test(2.0,(double) j / 3.0);
|
||||
*table++ = 0.0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void II_step_one(unsigned int *bit_alloc,int *scale,struct frame *fr)
|
||||
{
|
||||
int stereo = fr->stereo-1;
|
||||
int sblimit = fr->II_sblimit;
|
||||
int jsbound = fr->jsbound;
|
||||
int sblimit2 = fr->II_sblimit<<stereo;
|
||||
struct al_table *alloc1 = fr->alloc;
|
||||
int i;
|
||||
static unsigned int scfsi_buf[64];
|
||||
unsigned int *scfsi,*bita;
|
||||
int sc,step;
|
||||
|
||||
bita = bit_alloc;
|
||||
if(stereo)
|
||||
{
|
||||
for (i=jsbound;i;i--,alloc1+=(1<<step))
|
||||
{
|
||||
*bita++ = (char) getbits(step=alloc1->bits);
|
||||
*bita++ = (char) getbits(step);
|
||||
}
|
||||
for (i=sblimit-jsbound;i;i--,alloc1+=(1<<step))
|
||||
{
|
||||
bita[0] = (char) getbits(step=alloc1->bits);
|
||||
bita[1] = bita[0];
|
||||
bita+=2;
|
||||
}
|
||||
bita = bit_alloc;
|
||||
scfsi=scfsi_buf;
|
||||
for (i=sblimit2;i;i--)
|
||||
if (*bita++)
|
||||
*scfsi++ = (char) getbits_fast(2);
|
||||
}
|
||||
else /* mono */
|
||||
{
|
||||
for (i=sblimit;i;i--,alloc1+=(1<<step))
|
||||
*bita++ = (char) getbits(step=alloc1->bits);
|
||||
bita = bit_alloc;
|
||||
scfsi=scfsi_buf;
|
||||
for (i=sblimit;i;i--)
|
||||
if (*bita++)
|
||||
*scfsi++ = (char) getbits_fast(2);
|
||||
}
|
||||
|
||||
bita = bit_alloc;
|
||||
scfsi=scfsi_buf;
|
||||
for (i=sblimit2;i;i--)
|
||||
if (*bita++)
|
||||
switch (*scfsi++)
|
||||
{
|
||||
case 0:
|
||||
*scale++ = getbits_fast(6);
|
||||
*scale++ = getbits_fast(6);
|
||||
*scale++ = getbits_fast(6);
|
||||
break;
|
||||
case 1 :
|
||||
*scale++ = sc = getbits_fast(6);
|
||||
*scale++ = sc;
|
||||
*scale++ = getbits_fast(6);
|
||||
break;
|
||||
case 2:
|
||||
*scale++ = sc = getbits_fast(6);
|
||||
*scale++ = sc;
|
||||
*scale++ = sc;
|
||||
break;
|
||||
default: /* case 3 */
|
||||
*scale++ = getbits_fast(6);
|
||||
*scale++ = sc = getbits_fast(6);
|
||||
*scale++ = sc;
|
||||
break;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
void II_step_two(unsigned int *bit_alloc,real fraction[2][4][SBLIMIT],int *scale,struct frame *fr,int x1)
|
||||
{
|
||||
int i,j,k,ba;
|
||||
int stereo = fr->stereo;
|
||||
int sblimit = fr->II_sblimit;
|
||||
int jsbound = fr->jsbound;
|
||||
struct al_table *alloc2,*alloc1 = fr->alloc;
|
||||
unsigned int *bita=bit_alloc;
|
||||
int d1,step;
|
||||
|
||||
for (i=0;i<jsbound;i++,alloc1+=(1<<step))
|
||||
{
|
||||
step = alloc1->bits;
|
||||
for (j=0;j<stereo;j++)
|
||||
{
|
||||
if ( (ba=*bita++) )
|
||||
{
|
||||
k=(alloc2 = alloc1+ba)->bits;
|
||||
if( (d1=alloc2->d) < 0)
|
||||
{
|
||||
real cm=muls[k][scale[x1]];
|
||||
fraction[j][0][i] = ((real) ((int)getbits(k) + d1)) * cm;
|
||||
fraction[j][1][i] = ((real) ((int)getbits(k) + d1)) * cm;
|
||||
fraction[j][2][i] = ((real) ((int)getbits(k) + d1)) * cm;
|
||||
}
|
||||
else
|
||||
{
|
||||
static int *table[] = { 0,0,0,grp_3tab,0,grp_5tab,0,0,0,grp_9tab };
|
||||
unsigned int idx,*tab,m=scale[x1];
|
||||
idx = (unsigned int) getbits(k);
|
||||
tab = (unsigned int *) (table[d1] + idx + idx + idx);
|
||||
fraction[j][0][i] = muls[*tab++][m];
|
||||
fraction[j][1][i] = muls[*tab++][m];
|
||||
fraction[j][2][i] = muls[*tab][m];
|
||||
}
|
||||
scale+=3;
|
||||
}
|
||||
else
|
||||
fraction[j][0][i] = fraction[j][1][i] = fraction[j][2][i] = 0.0;
|
||||
}
|
||||
}
|
||||
|
||||
for (i=jsbound;i<sblimit;i++,alloc1+=(1<<step))
|
||||
{
|
||||
step = alloc1->bits;
|
||||
bita++; /* channel 1 and channel 2 bitalloc are the same */
|
||||
if ( (ba=*bita++) )
|
||||
{
|
||||
k=(alloc2 = alloc1+ba)->bits;
|
||||
if( (d1=alloc2->d) < 0)
|
||||
{
|
||||
real cm;
|
||||
cm=muls[k][scale[x1+3]];
|
||||
fraction[1][0][i] = (fraction[0][0][i] = (real) ((int)getbits(k) + d1) ) * cm;
|
||||
fraction[1][1][i] = (fraction[0][1][i] = (real) ((int)getbits(k) + d1) ) * cm;
|
||||
fraction[1][2][i] = (fraction[0][2][i] = (real) ((int)getbits(k) + d1) ) * cm;
|
||||
cm=muls[k][scale[x1]];
|
||||
fraction[0][0][i] *= cm; fraction[0][1][i] *= cm; fraction[0][2][i] *= cm;
|
||||
}
|
||||
else
|
||||
{
|
||||
static int *table[] = { 0,0,0,grp_3tab,0,grp_5tab,0,0,0,grp_9tab };
|
||||
unsigned int idx,*tab,m1,m2;
|
||||
m1 = scale[x1]; m2 = scale[x1+3];
|
||||
idx = (unsigned int) getbits(k);
|
||||
tab = (unsigned int *) (table[d1] + idx + idx + idx);
|
||||
fraction[0][0][i] = muls[*tab][m1]; fraction[1][0][i] = muls[*tab++][m2];
|
||||
fraction[0][1][i] = muls[*tab][m1]; fraction[1][1][i] = muls[*tab++][m2];
|
||||
fraction[0][2][i] = muls[*tab][m1]; fraction[1][2][i] = muls[*tab][m2];
|
||||
}
|
||||
scale+=6;
|
||||
}
|
||||
else {
|
||||
fraction[0][0][i] = fraction[0][1][i] = fraction[0][2][i] =
|
||||
fraction[1][0][i] = fraction[1][1][i] = fraction[1][2][i] = 0.0;
|
||||
}
|
||||
/*
|
||||
should we use individual scalefac for channel 2 or
|
||||
is the current way the right one , where we just copy channel 1 to
|
||||
channel 2 ??
|
||||
The current 'strange' thing is, that we throw away the scalefac
|
||||
values for the second channel ...!!
|
||||
-> changed .. now we use the scalefac values of channel one !!
|
||||
*/
|
||||
}
|
||||
|
||||
if(sblimit > (fr->down_sample_sblimit) )
|
||||
sblimit = fr->down_sample_sblimit;
|
||||
|
||||
for(i=sblimit;i<SBLIMIT;i++)
|
||||
for (j=0;j<stereo;j++)
|
||||
fraction[j][0][i] = fraction[j][1][i] = fraction[j][2][i] = 0.0;
|
||||
|
||||
}
|
||||
|
||||
static void II_select_table(struct frame *fr)
|
||||
{
|
||||
static int translate[3][2][16] =
|
||||
{ { { 0,2,2,2,2,2,2,0,0,0,1,1,1,1,1,0 } ,
|
||||
{ 0,2,2,0,0,0,1,1,1,1,1,1,1,1,1,0 } } ,
|
||||
{ { 0,2,2,2,2,2,2,0,0,0,0,0,0,0,0,0 } ,
|
||||
{ 0,2,2,0,0,0,0,0,0,0,0,0,0,0,0,0 } } ,
|
||||
{ { 0,3,3,3,3,3,3,0,0,0,1,1,1,1,1,0 } ,
|
||||
{ 0,3,3,0,0,0,1,1,1,1,1,1,1,1,1,0 } } };
|
||||
|
||||
int table,sblim;
|
||||
static struct al_table *tables[5] =
|
||||
{ alloc_0, alloc_1, alloc_2, alloc_3 , alloc_4 };
|
||||
static int sblims[5] = { 27 , 30 , 8, 12 , 30 };
|
||||
|
||||
if(fr->sampling_frequency >= 3) /* Or equivalent: (fr->lsf == 1) */
|
||||
table = 4;
|
||||
else
|
||||
table = translate[fr->sampling_frequency][2-fr->stereo][fr->bitrate_index];
|
||||
sblim = sblims[table];
|
||||
|
||||
fr->alloc = tables[table];
|
||||
fr->II_sblimit = sblim;
|
||||
}
|
||||
|
||||
|
||||
int do_layer2(struct frame *fr,byte *pcm_sample,int *pcm_point)
|
||||
{
|
||||
int clip=0;
|
||||
int i,j;
|
||||
int stereo = fr->stereo;
|
||||
real fraction[2][4][SBLIMIT]; /* pick_table clears unused subbands */
|
||||
unsigned int bit_alloc[64];
|
||||
int scale[192];
|
||||
int single = fr->single;
|
||||
|
||||
II_select_table(fr);
|
||||
fr->jsbound = (fr->mode == MPG_MD_JOINT_STEREO) ?
|
||||
(fr->mode_ext<<2)+4 : fr->II_sblimit;
|
||||
|
||||
if (fr->jsbound > fr->II_sblimit) {
|
||||
fr->jsbound=fr->II_sblimit;
|
||||
}
|
||||
|
||||
if(stereo == 1 || single == 3)
|
||||
single = 0;
|
||||
|
||||
II_step_one(bit_alloc, scale, fr);
|
||||
|
||||
for (i=0;i<SCALE_BLOCK;i++)
|
||||
{
|
||||
II_step_two(bit_alloc,fraction,scale,fr,i>>2);
|
||||
for (j=0;j<3;j++)
|
||||
{
|
||||
if(single >= 0)
|
||||
{
|
||||
clip += (fr->synth_mono) (fraction[single][j],pcm_sample,pcm_point);
|
||||
}
|
||||
else {
|
||||
int p1=*pcm_point;
|
||||
clip += (fr->synth) (fraction[0][j],0,pcm_sample, &p1);
|
||||
clip += (fr->synth) (fraction[1][j],1,pcm_sample,pcm_point);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return clip;
|
||||
}
|
||||
|
||||
|
||||
1953
programs/media/ac97snd/trunk/mpg/layer3.c
Normal file
1953
programs/media/ac97snd/trunk/mpg/layer3.c
Normal file
File diff suppressed because it is too large
Load Diff
17
programs/media/ac97snd/trunk/mpg/layer3.h
Normal file
17
programs/media/ac97snd/trunk/mpg/layer3.h
Normal file
@ -0,0 +1,17 @@
|
||||
/*
|
||||
layer3.h: some functions for interfacing to layer3 (gapless support)
|
||||
|
||||
copyright 2006 by the mpg123 project - free software under the terms of the LGPL 2.1
|
||||
see COPYING and AUTHORS files in distribution or http://mpg123.de
|
||||
initially written by Thomas Orgis.
|
||||
*/
|
||||
|
||||
/* init part 1; set start/end in samples_*/
|
||||
void layer3_gapless_init(unsigned long b, unsigned long e);
|
||||
/* init part 2; transform to byte addresses with new info */
|
||||
void layer3_gapless_bytify(struct frame *fr, struct audio_info_struct *ai);
|
||||
/* after some seeking action to a new frame, the decoder needs to know which one is coming next */
|
||||
void layer3_gapless_set_position(unsigned long frames, struct frame* fr, struct audio_info_struct *ai);
|
||||
void layer3_gapless_set_ignore(unsigned long frames, struct frame* fr, struct audio_info_struct *ai);
|
||||
/* removing the gaps from buffer */
|
||||
void layer3_gapless_buffercheck();
|
||||
209
programs/media/ac97snd/trunk/mpg/math_private.h
Normal file
209
programs/media/ac97snd/trunk/mpg/math_private.h
Normal file
@ -0,0 +1,209 @@
|
||||
/*
|
||||
* ====================================================
|
||||
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||||
*
|
||||
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
||||
* Permission to use, copy, modify, and distribute this
|
||||
* software is freely granted, provided that this notice
|
||||
* is preserved.
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
* from: @(#)fdlibm.h 5.1 93/09/24
|
||||
* $Id: math_private.h,v 1.8 1998/11/27 11:33:46 drepper Exp $
|
||||
*/
|
||||
|
||||
#ifndef _MATH_PRIVATE_H_
|
||||
#define _MATH_PRIVATE_H_
|
||||
|
||||
|
||||
/* The original fdlibm code used statements like:
|
||||
n0 = ((*(int*)&one)>>29)^1; * index of high word *
|
||||
ix0 = *(n0+(int*)&x); * high word of x *
|
||||
ix1 = *((1-n0)+(int*)&x); * low word of x *
|
||||
to dig two 32 bit words out of the 64 bit IEEE floating point
|
||||
value. That is non-ANSI, and, moreover, the gcc instruction
|
||||
scheduler gets it wrong. We instead use the following macros.
|
||||
Unlike the original code, we determine the endianness at compile
|
||||
time, not at run time; I don't see much benefit to selecting
|
||||
endianness at run time. */
|
||||
|
||||
/* A union which permits us to convert between a double and two 32 bit
|
||||
ints. */
|
||||
|
||||
typedef int int32_t;
|
||||
typedef unsigned int u_int32_t;
|
||||
|
||||
typedef union
|
||||
{
|
||||
double value;
|
||||
struct
|
||||
{
|
||||
u_int32_t lsw;
|
||||
u_int32_t msw;
|
||||
} parts;
|
||||
} ieee_double_shape_type;
|
||||
|
||||
/* Get two 32 bit ints from a double. */
|
||||
|
||||
#define EXTRACT_WORDS(ix0,ix1,d) \
|
||||
do { \
|
||||
ieee_double_shape_type ew_u; \
|
||||
ew_u.value = (d); \
|
||||
(ix0) = ew_u.parts.msw; \
|
||||
(ix1) = ew_u.parts.lsw; \
|
||||
} while (0)
|
||||
|
||||
/* Get the more significant 32 bit int from a double. */
|
||||
|
||||
#define GET_HIGH_WORD(i,d) \
|
||||
do { \
|
||||
ieee_double_shape_type gh_u; \
|
||||
gh_u.value = (d); \
|
||||
(i) = gh_u.parts.msw; \
|
||||
} while (0)
|
||||
|
||||
/* Get the less significant 32 bit int from a double. */
|
||||
|
||||
#define GET_LOW_WORD(i,d) \
|
||||
do { \
|
||||
ieee_double_shape_type gl_u; \
|
||||
gl_u.value = (d); \
|
||||
(i) = gl_u.parts.lsw; \
|
||||
} while (0)
|
||||
|
||||
/* Set a double from two 32 bit ints. */
|
||||
|
||||
#define INSERT_WORDS(d,ix0,ix1) \
|
||||
do { \
|
||||
ieee_double_shape_type iw_u; \
|
||||
iw_u.parts.msw = (ix0); \
|
||||
iw_u.parts.lsw = (ix1); \
|
||||
(d) = iw_u.value; \
|
||||
} while (0)
|
||||
|
||||
/* Set the more significant 32 bits of a double from an int. */
|
||||
|
||||
#define SET_HIGH_WORD(d,v) \
|
||||
do { \
|
||||
ieee_double_shape_type sh_u; \
|
||||
sh_u.value = (d); \
|
||||
sh_u.parts.msw = (v); \
|
||||
(d) = sh_u.value; \
|
||||
} while (0)
|
||||
|
||||
/* Set the less significant 32 bits of a double from an int. */
|
||||
|
||||
#define SET_LOW_WORD(d,v) \
|
||||
do { \
|
||||
ieee_double_shape_type sl_u; \
|
||||
sl_u.value = (d); \
|
||||
sl_u.parts.lsw = (v); \
|
||||
(d) = sl_u.value; \
|
||||
} while (0)
|
||||
|
||||
/* A union which permits us to convert between a float and a 32 bit
|
||||
int. */
|
||||
|
||||
typedef union
|
||||
{
|
||||
float value;
|
||||
u_int32_t word;
|
||||
} ieee_float_shape_type;
|
||||
|
||||
/* Get a 32 bit int from a float. */
|
||||
|
||||
#define GET_FLOAT_WORD(i,d) \
|
||||
do { \
|
||||
ieee_float_shape_type gf_u; \
|
||||
gf_u.value = (d); \
|
||||
(i) = gf_u.word; \
|
||||
} while (0)
|
||||
|
||||
/* Set a float from a 32 bit int. */
|
||||
|
||||
#define SET_FLOAT_WORD(d,i) \
|
||||
do { \
|
||||
ieee_float_shape_type sf_u; \
|
||||
sf_u.word = (i); \
|
||||
(d) = sf_u.value; \
|
||||
} while (0)
|
||||
|
||||
/* A union which permits us to convert between a long double and
|
||||
three 32 bit ints. */
|
||||
|
||||
|
||||
typedef union
|
||||
{
|
||||
long double value;
|
||||
struct
|
||||
{
|
||||
u_int32_t lsw;
|
||||
u_int32_t msw;
|
||||
unsigned int sign_exponent:16;
|
||||
unsigned int empty:16;
|
||||
} parts;
|
||||
} ieee_long_double_shape_type;
|
||||
|
||||
/* Get three 32 bit ints from a double. */
|
||||
|
||||
#define GET_LDOUBLE_WORDS(exp,ix0,ix1,d) \
|
||||
do { \
|
||||
ieee_long_double_shape_type ew_u; \
|
||||
ew_u.value = (d); \
|
||||
(exp) = ew_u.parts.sign_exponent; \
|
||||
(ix0) = ew_u.parts.msw; \
|
||||
(ix1) = ew_u.parts.lsw; \
|
||||
} while (0)
|
||||
|
||||
/* Set a double from two 32 bit ints. */
|
||||
|
||||
#define SET_LDOUBLE_WORDS(d,exp,ix0,ix1) \
|
||||
do { \
|
||||
ieee_long_double_shape_type iw_u; \
|
||||
iw_u.parts.sign_exponent = (exp); \
|
||||
iw_u.parts.msw = (ix0); \
|
||||
iw_u.parts.lsw = (ix1); \
|
||||
(d) = iw_u.value; \
|
||||
} while (0)
|
||||
|
||||
/* Get the more significant 32 bits of a long double mantissa. */
|
||||
|
||||
#define GET_LDOUBLE_MSW(v,d) \
|
||||
do { \
|
||||
ieee_long_double_shape_type sh_u; \
|
||||
sh_u.value = (d); \
|
||||
(v) = sh_u.parts.msw; \
|
||||
} while (0)
|
||||
|
||||
/* Set the more significant 32 bits of a long double mantissa from an int. */
|
||||
|
||||
#define SET_LDOUBLE_MSW(d,v) \
|
||||
do { \
|
||||
ieee_long_double_shape_type sh_u; \
|
||||
sh_u.value = (d); \
|
||||
sh_u.parts.msw = (v); \
|
||||
(d) = sh_u.value; \
|
||||
} while (0)
|
||||
|
||||
/* Get int from the exponent of a long double. */
|
||||
|
||||
#define GET_LDOUBLE_EXP(exp,d) \
|
||||
do { \
|
||||
ieee_long_double_shape_type ge_u; \
|
||||
ge_u.value = (d); \
|
||||
(exp) = ge_u.parts.sign_exponent; \
|
||||
} while (0)
|
||||
|
||||
/* Set exponent of a long double from an int. */
|
||||
|
||||
#define SET_LDOUBLE_EXP(d,exp) \
|
||||
do { \
|
||||
ieee_long_double_shape_type se_u; \
|
||||
se_u.value = (d); \
|
||||
se_u.parts.sign_exponent = (exp); \
|
||||
(d) = se_u.value; \
|
||||
} while (0)
|
||||
|
||||
#endif /* _MATH_PRIVATE_H_ */
|
||||
365
programs/media/ac97snd/trunk/mpg/mpg.vcproj
Normal file
365
programs/media/ac97snd/trunk/mpg/mpg.vcproj
Normal file
@ -0,0 +1,365 @@
|
||||
<?xml version="1.0" encoding="windows-1251"?>
|
||||
<VisualStudioProject
|
||||
ProjectType="Visual C++"
|
||||
Version="8,00"
|
||||
Name="mpg"
|
||||
ProjectGUID="{CF807B93-2860-41DF-A4D2-5B92B52DFD96}"
|
||||
RootNamespace="mpg"
|
||||
Keyword="Win32Proj"
|
||||
>
|
||||
<Platforms>
|
||||
<Platform
|
||||
Name="Win32"
|
||||
/>
|
||||
</Platforms>
|
||||
<ToolFiles>
|
||||
</ToolFiles>
|
||||
<Configurations>
|
||||
<Configuration
|
||||
Name="Debug|Win32"
|
||||
OutputDirectory="$(SolutionDir)$(ConfigurationName)"
|
||||
IntermediateDirectory="$(ConfigurationName)"
|
||||
ConfigurationType="4"
|
||||
CharacterSet="1"
|
||||
>
|
||||
<Tool
|
||||
Name="VCPreBuildEventTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCCustomBuildTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCXMLDataGeneratorTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCWebServiceProxyGeneratorTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCMIDLTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
Optimization="0"
|
||||
PreprocessorDefinitions="WIN32;_DEBUG;_LIB"
|
||||
MinimalRebuild="true"
|
||||
BasicRuntimeChecks="3"
|
||||
RuntimeLibrary="3"
|
||||
UsePrecompiledHeader="0"
|
||||
WarningLevel="3"
|
||||
Detect64BitPortabilityProblems="true"
|
||||
DebugInformationFormat="4"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCManagedResourceCompilerTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCResourceCompilerTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCPreLinkEventTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCLibrarianTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCALinkTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCXDCMakeTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCBscMakeTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCFxCopTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCPostBuildEventTool"
|
||||
/>
|
||||
</Configuration>
|
||||
<Configuration
|
||||
Name="Release|Win32"
|
||||
OutputDirectory="$(SolutionDir)$(ConfigurationName)"
|
||||
IntermediateDirectory="$(ConfigurationName)"
|
||||
ConfigurationType="4"
|
||||
CharacterSet="1"
|
||||
WholeProgramOptimization="1"
|
||||
>
|
||||
<Tool
|
||||
Name="VCPreBuildEventTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCCustomBuildTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCXMLDataGeneratorTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCWebServiceProxyGeneratorTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCMIDLTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
Optimization="3"
|
||||
InlineFunctionExpansion="1"
|
||||
EnableIntrinsicFunctions="true"
|
||||
FavorSizeOrSpeed="2"
|
||||
OmitFramePointers="true"
|
||||
PreprocessorDefinitions="WIN32;NDEBUG;_LIB"
|
||||
ExceptionHandling="0"
|
||||
RuntimeLibrary="0"
|
||||
StructMemberAlignment="1"
|
||||
BufferSecurityCheck="false"
|
||||
FloatingPointModel="2"
|
||||
UsePrecompiledHeader="0"
|
||||
AssemblerOutput="0"
|
||||
WarningLevel="3"
|
||||
Detect64BitPortabilityProblems="true"
|
||||
DebugInformationFormat="3"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCManagedResourceCompilerTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCResourceCompilerTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCPreLinkEventTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCLibrarianTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCALinkTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCXDCMakeTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCBscMakeTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCFxCopTool"
|
||||
/>
|
||||
<Tool
|
||||
Name="VCPostBuildEventTool"
|
||||
/>
|
||||
</Configuration>
|
||||
</Configurations>
|
||||
<References>
|
||||
</References>
|
||||
<Files>
|
||||
<Filter
|
||||
Name="Source Files"
|
||||
Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
|
||||
UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
|
||||
>
|
||||
<File
|
||||
RelativePath=".\dct64_i386.c"
|
||||
>
|
||||
<FileConfiguration
|
||||
Name="Release|Win32"
|
||||
>
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
ExpandAttributedSource="false"
|
||||
AssemblerOutput="4"
|
||||
/>
|
||||
</FileConfiguration>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\dct64_i486.c"
|
||||
>
|
||||
<FileConfiguration
|
||||
Name="Release|Win32"
|
||||
ExcludedFromBuild="true"
|
||||
>
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
/>
|
||||
</FileConfiguration>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\decode_2to1.c"
|
||||
>
|
||||
<FileConfiguration
|
||||
Name="Debug|Win32"
|
||||
ExcludedFromBuild="true"
|
||||
>
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
/>
|
||||
</FileConfiguration>
|
||||
<FileConfiguration
|
||||
Name="Release|Win32"
|
||||
ExcludedFromBuild="true"
|
||||
>
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
/>
|
||||
</FileConfiguration>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\decode_4to1.c"
|
||||
>
|
||||
<FileConfiguration
|
||||
Name="Debug|Win32"
|
||||
ExcludedFromBuild="true"
|
||||
>
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
/>
|
||||
</FileConfiguration>
|
||||
<FileConfiguration
|
||||
Name="Release|Win32"
|
||||
ExcludedFromBuild="true"
|
||||
>
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
/>
|
||||
</FileConfiguration>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\decode_i386.c"
|
||||
>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\decode_i486.c"
|
||||
>
|
||||
<FileConfiguration
|
||||
Name="Release|Win32"
|
||||
ExcludedFromBuild="true"
|
||||
>
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
/>
|
||||
</FileConfiguration>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\decode_ntom.c"
|
||||
>
|
||||
<FileConfiguration
|
||||
Name="Debug|Win32"
|
||||
ExcludedFromBuild="true"
|
||||
>
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
/>
|
||||
</FileConfiguration>
|
||||
<FileConfiguration
|
||||
Name="Release|Win32"
|
||||
ExcludedFromBuild="true"
|
||||
>
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
/>
|
||||
</FileConfiguration>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\e_pow.c"
|
||||
>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\getbits.c"
|
||||
>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\layer1.c"
|
||||
>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\layer2.c"
|
||||
>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\layer3.c"
|
||||
>
|
||||
<FileConfiguration
|
||||
Name="Release|Win32"
|
||||
>
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
ExpandAttributedSource="true"
|
||||
AssemblerOutput="4"
|
||||
AssemblerListingLocation="$(IntDir)\"
|
||||
/>
|
||||
</FileConfiguration>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\pow.asm"
|
||||
>
|
||||
<FileConfiguration
|
||||
Name="Release|Win32"
|
||||
>
|
||||
<Tool
|
||||
Name="VCCustomBuildTool"
|
||||
CommandLine="e:\fasm\fasm.exe $(InputPath) $(TargetDir)\$(InputName).obj
"
|
||||
Outputs="$(OutDir)\$(InputName).obj"
|
||||
/>
|
||||
</FileConfiguration>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\readers.c"
|
||||
>
|
||||
<FileConfiguration
|
||||
Name="Release|Win32"
|
||||
>
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
ExpandAttributedSource="false"
|
||||
AssemblerOutput="4"
|
||||
/>
|
||||
</FileConfiguration>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\tabinit.c"
|
||||
>
|
||||
</File>
|
||||
</Filter>
|
||||
<Filter
|
||||
Name="Header Files"
|
||||
Filter="h;hpp;hxx;hm;inl;inc;xsd"
|
||||
UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}"
|
||||
>
|
||||
<File
|
||||
RelativePath=".\getbits.h"
|
||||
>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\huffman.h"
|
||||
>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\l2tables.h"
|
||||
>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\layer3.h"
|
||||
>
|
||||
</File>
|
||||
<File
|
||||
RelativePath=".\mpg123.h"
|
||||
>
|
||||
</File>
|
||||
</Filter>
|
||||
<Filter
|
||||
Name="Resource Files"
|
||||
Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav"
|
||||
UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}"
|
||||
>
|
||||
<File
|
||||
RelativePath="E:\arrow.cur"
|
||||
FileType="32"
|
||||
>
|
||||
</File>
|
||||
</Filter>
|
||||
<File
|
||||
RelativePath=".\ReadMe.txt"
|
||||
>
|
||||
</File>
|
||||
</Files>
|
||||
<Globals>
|
||||
</Globals>
|
||||
</VisualStudioProject>
|
||||
358
programs/media/ac97snd/trunk/mpg/mpg123.h
Normal file
358
programs/media/ac97snd/trunk/mpg/mpg123.h
Normal file
@ -0,0 +1,358 @@
|
||||
/*
|
||||
mpg123: main code of the program (not of the decoder...)
|
||||
|
||||
copyright 1995-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
|
||||
see COPYING and AUTHORS files in distribution or http://mpg123.de
|
||||
initially written by Michael Hipp
|
||||
|
||||
mpg123 defines
|
||||
used source: musicout.h from mpegaudio package
|
||||
*/
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#include <stdio.h>
|
||||
#include <math.h>
|
||||
#ifndef _AUDIO_H_
|
||||
#define _AUDIO_H_
|
||||
|
||||
typedef unsigned char byte;
|
||||
#define off_t long
|
||||
|
||||
//#define I486_OPT 1
|
||||
|
||||
#define SKIP_JUNK 1
|
||||
# define M_PI 3.14159265358979323846
|
||||
# define M_SQRT2 1.41421356237309504880
|
||||
# define REAL_IS_FLOAT
|
||||
# define NEW_DCT9
|
||||
|
||||
#ifdef REAL_IS_FLOAT
|
||||
# define real float
|
||||
# define REAL_SCANF "%f"
|
||||
# define REAL_PRINTF "%f"
|
||||
#else
|
||||
# define real double
|
||||
# define REAL_SCANF "%lf"
|
||||
# define REAL_PRINTF "%f"
|
||||
#endif
|
||||
|
||||
#ifndef DOUBLE_TO_REAL
|
||||
# define DOUBLE_TO_REAL(x) (x)
|
||||
#endif
|
||||
#ifndef REAL_TO_SHORT
|
||||
# define REAL_TO_SHORT(x) (x)
|
||||
#endif
|
||||
#ifndef REAL_PLUS_32767
|
||||
# define REAL_PLUS_32767 32767.0
|
||||
#endif
|
||||
#ifndef REAL_MINUS_32768
|
||||
# define REAL_MINUS_32768 -32768.0
|
||||
#endif
|
||||
#ifndef REAL_MUL
|
||||
# define REAL_MUL(x, y) ((x) * (y))
|
||||
#endif
|
||||
|
||||
#define INLINE
|
||||
/* AUDIOBUFSIZE = n*64 with n=1,2,3 ... */
|
||||
#define AUDIOBUFSIZE 16384
|
||||
|
||||
#define FALSE 0
|
||||
#define TRUE 1
|
||||
|
||||
#define MAX_NAME_SIZE 81
|
||||
#define SBLIMIT 32
|
||||
#define SCALE_BLOCK 12
|
||||
#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
|
||||
|
||||
/* I suspect that 32767 would be a better idea here, but Michael put this in... */
|
||||
#define MAXOUTBURST 32768
|
||||
|
||||
/* Pre Shift fo 16 to 8 bit converter table */
|
||||
#define AUSHIFT (3)
|
||||
|
||||
struct bitstream_info
|
||||
{ int bitindex;
|
||||
unsigned char *wordpointer;
|
||||
};
|
||||
extern struct bitstream_info bsi;
|
||||
|
||||
struct reader
|
||||
{ char *hFile;
|
||||
unsigned char *buffer;
|
||||
unsigned char *stream;
|
||||
int strpos;
|
||||
int strremain;
|
||||
int filelen;
|
||||
int filepos;
|
||||
|
||||
int (*head_read)(struct reader *,unsigned long *newhead);
|
||||
int (*read_frame_body)(struct reader *,unsigned char *,int size);
|
||||
};
|
||||
|
||||
struct al_table
|
||||
{ short bits;
|
||||
short d;
|
||||
};
|
||||
|
||||
struct frame {
|
||||
struct al_table *alloc;
|
||||
int (*synth)(real *,int,unsigned char *,int *);
|
||||
int (*synth_mono)(real *,unsigned char *,int *);
|
||||
int stereo; /* I _think_ 1 for mono and 2 for stereo */
|
||||
int jsbound;
|
||||
int single;
|
||||
int II_sblimit;
|
||||
int down_sample_sblimit;
|
||||
int lsf; /* 0: MPEG 1.0; 1: MPEG 2.0/2.5 -- both used as bool and array index! */
|
||||
int mpeg25;
|
||||
int down_sample;
|
||||
int header_change;
|
||||
int lay;
|
||||
int (*do_layer)(struct frame *fr,byte *pcm_out, int *pcm_size);
|
||||
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 */
|
||||
int vbr; /* 1 if variable bitrate was detected */
|
||||
unsigned long num; /* the nth frame in some stream... */
|
||||
};
|
||||
|
||||
#if 0
|
||||
struct parameter {
|
||||
int aggressive; /* renice to max. priority */
|
||||
int shuffle; /* shuffle/random play */
|
||||
int remote; /* remote operation */
|
||||
int remote_err; /* remote operation to stderr */
|
||||
int outmode; /* where to out the decoded sampels */
|
||||
int quiet; /* shut up! */
|
||||
int xterm_title; /* Change xterm title to song names? */
|
||||
long usebuffer; /* second level buffer size */
|
||||
int tryresync; /* resync stream after error */
|
||||
int verbose; /* verbose level */
|
||||
int force_mono;
|
||||
int force_stereo;
|
||||
int force_8bit;
|
||||
long force_rate;
|
||||
int down_sample;
|
||||
int checkrange;
|
||||
long doublespeed;
|
||||
long halfspeed;
|
||||
int force_reopen;
|
||||
long realtime;
|
||||
char filename[256];
|
||||
long listentry; /* possibility to choose playback of one entry in playlist (0: off, > 0 : select, < 0; just show list*/
|
||||
int rva; /* (which) rva to do: <0: nothing, 0: radio/mix/track 1: album/audiophile */
|
||||
char* listname; /* name of playlist */
|
||||
int long_id3;
|
||||
};
|
||||
#endif
|
||||
|
||||
#if 0
|
||||
struct reader {
|
||||
int (*init)(struct reader *);
|
||||
void (*close)(struct reader *);
|
||||
int (*head_read)(struct reader *,unsigned long *newhead);
|
||||
int (*head_shift)(struct reader *,unsigned long *head);
|
||||
long (*skip_bytes)(struct reader *,off_t len);
|
||||
int (*read_frame_body)(struct reader *,unsigned char *,int size);
|
||||
int (*back_bytes)(struct reader *,off_t bytes);
|
||||
int (*back_frame)(struct reader *,struct frame *,long num);
|
||||
off_t (*tell)(struct reader *);
|
||||
void (*rewind)(struct reader *);
|
||||
off_t filelen;
|
||||
off_t filepos;
|
||||
int filept;
|
||||
int flags;
|
||||
unsigned char id3buf[128];
|
||||
};
|
||||
#endif
|
||||
|
||||
#define READER_FD_OPENED 0x1
|
||||
#define READER_ID3TAG 0x2
|
||||
#define READER_SEEKABLE 0x4
|
||||
|
||||
//extern void audio_flush(int, struct audio_info_struct *);
|
||||
|
||||
//extern void print_header(struct frame *);
|
||||
//extern void print_header_compact(struct frame *);
|
||||
//extern void print_id3_tag(unsigned char *buf);
|
||||
|
||||
//extern int split_dir_file(const char *path, char **dname, char **fname);
|
||||
|
||||
extern unsigned int get1bit(void);
|
||||
extern unsigned int getbits(int);
|
||||
extern unsigned int getbits_fast(int);
|
||||
//extern void backbits(int);
|
||||
//extern int getbitoffset(void);
|
||||
//extern int getbyte(void);
|
||||
|
||||
//extern void set_pointer(long);
|
||||
|
||||
//extern unsigned char *pcm_sample;
|
||||
//extern int pcm_point;
|
||||
//extern int audiobufsize;
|
||||
|
||||
//extern int OutputDescriptor;
|
||||
|
||||
#ifdef VARMODESUPPORT
|
||||
extern int varmode;
|
||||
extern int playlimit;
|
||||
#endif
|
||||
|
||||
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];
|
||||
};
|
||||
|
||||
extern int open_stream(char *,int fd);
|
||||
extern void read_frame_init (struct frame* fr);
|
||||
int read_frame(struct reader *rd, struct frame *fr);
|
||||
|
||||
|
||||
/* why extern? */
|
||||
void prepare_audioinfo(struct frame *fr, struct audio_info_struct *nai);
|
||||
int play_frame(int init,struct frame *fr);
|
||||
int do_layer1(struct frame *fr,byte *pcm_sample, int *pcm_point);
|
||||
int do_layer2(struct frame *fr,byte *pcm_sample, int *pcm_point);
|
||||
int do_layer3(struct frame *fr,byte *pcm_sample, int *pcm_point);
|
||||
extern void do_equalizer(real *bandPtr,int channel);
|
||||
|
||||
#ifdef PENTIUM_OPT
|
||||
extern int synth_1to1_pent (real *,int,unsigned char *);
|
||||
#endif
|
||||
extern int synth_1to1 (real *,int,unsigned char *,int *);
|
||||
extern int synth_1to1_8bit (real *,int,unsigned char *,int *);
|
||||
extern int synth_1to1_mono (real *,unsigned char *,int *);
|
||||
extern int synth_1to1_mono2stereo (real *,unsigned char *,int *);
|
||||
extern int synth_1to1_8bit_mono (real *,unsigned char *,int *);
|
||||
extern int synth_1to1_8bit_mono2stereo (real *,unsigned char *,int *);
|
||||
|
||||
extern int synth_2to1 (real *,int,unsigned char *,int *);
|
||||
extern int synth_2to1_8bit (real *,int,unsigned char *,int *);
|
||||
extern int synth_2to1_mono (real *,unsigned char *,int *);
|
||||
extern int synth_2to1_mono2stereo (real *,unsigned char *,int *);
|
||||
extern int synth_2to1_8bit_mono (real *,unsigned char *,int *);
|
||||
extern int synth_2to1_8bit_mono2stereo (real *,unsigned char *,int *);
|
||||
|
||||
extern int synth_4to1 (real *,int,unsigned char *,int *);
|
||||
extern int synth_4to1_8bit (real *,int,unsigned char *,int *);
|
||||
extern int synth_4to1_mono (real *,unsigned char *,int *);
|
||||
extern int synth_4to1_mono2stereo (real *,unsigned char *,int *);
|
||||
extern int synth_4to1_8bit_mono (real *,unsigned char *,int *);
|
||||
extern int synth_4to1_8bit_mono2stereo (real *,unsigned char *,int *);
|
||||
|
||||
extern int synth_ntom (real *,int,unsigned char *,int *);
|
||||
extern int synth_ntom_8bit (real *,int,unsigned char *,int *);
|
||||
extern int synth_ntom_mono (real *,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 rewindNbits(int bits);
|
||||
extern int hsstell(void);
|
||||
extern void set_pointer(long);
|
||||
extern void huffman_decoder(int ,int *);
|
||||
extern void huffman_count1(int,int *);
|
||||
extern void print_stat(struct frame *fr,unsigned long no,long buffsize,struct audio_info_struct *ai);
|
||||
extern int get_songlen(struct frame *fr,int no);
|
||||
|
||||
extern void init_layer3(int);
|
||||
extern void init_layer2(void);
|
||||
extern void make_decode_tables(long scale);
|
||||
extern int make_conv16to8_table(int);
|
||||
extern void dct64(real *,real *,real *);
|
||||
|
||||
#ifdef USE_MMX
|
||||
extern void dct64_MMX(short *a,short *b,real *c);
|
||||
extern int synth_1to1_MMX(real *, int, short *, short *, int *);
|
||||
#endif
|
||||
|
||||
extern int synth_ntom_set_step(long,long);
|
||||
|
||||
|
||||
extern unsigned char *conv16to8;
|
||||
extern long freqs[9];
|
||||
extern real muls[27][64];
|
||||
extern real decwin[512+32];
|
||||
#ifndef USE_MMX
|
||||
extern real *pnts[5];
|
||||
#endif
|
||||
|
||||
extern real equalizer[2][32];
|
||||
extern real equalizer_sum[2][32];
|
||||
extern int equalizer_cnt;
|
||||
|
||||
extern struct audio_name audio_val2name[];
|
||||
|
||||
//extern struct parameter param;
|
||||
|
||||
/* 486 optimizations */
|
||||
#define FIR_BUFFER_SIZE 128
|
||||
extern void dct64_486(int *a,int *b,real *c);
|
||||
extern int synth_1to1_486(real *bandPtr,int channel,unsigned char *out,int nb_blocks);
|
||||
|
||||
/* 3DNow! optimizations */
|
||||
#ifdef USE_3DNOW
|
||||
extern int getcpuflags(void);
|
||||
extern void dct36(real *,real *,real *,real *,real *);
|
||||
extern void dct36_3dnow(real *,real *,real *,real *,real *);
|
||||
extern int synth_1to1_3dnow(real *,int,unsigned char *,int *);
|
||||
#endif
|
||||
|
||||
/* avoid the SIGINT in terminal control */
|
||||
void next_track(void);
|
||||
extern long outscale;
|
||||
|
||||
#endif
|
||||
|
||||
void set_pointer(long backstep);
|
||||
int __stdcall create_reader(struct reader *rd,byte *buffer, int buffsize);
|
||||
int __stdcall init_reader(struct reader *rd, char *file);
|
||||
int __stdcall decode_header(struct frame *fr,unsigned long newhead);
|
||||
int __stdcall set_reader(struct reader *rd, unsigned int filepos);
|
||||
double pow_test(double, double);
|
||||
void * __cdecl mem_cpy(void * dst,const void * src,size_t count);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
880
programs/media/ac97snd/trunk/mpg/readers.c
Normal file
880
programs/media/ac97snd/trunk/mpg/readers.c
Normal file
@ -0,0 +1,880 @@
|
||||
#include "mpg123.h"
|
||||
#include "..\kolibri.h"
|
||||
|
||||
#define MAXFRAMESIZE 3456
|
||||
|
||||
static int fsizeold=0,ssize;
|
||||
static unsigned char bsspace[2][MAXFRAMESIZE+512]; /* MAXFRAMESIZE */
|
||||
static unsigned char *bsbuf=bsspace[1],*bsbufold;
|
||||
static int bsnum=0;
|
||||
|
||||
static unsigned long oldhead = 0;
|
||||
unsigned long firsthead=0;
|
||||
|
||||
struct bitstream_info bsi;
|
||||
|
||||
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,} }
|
||||
};
|
||||
|
||||
int freqs[9] = { 44100, 48000, 32000, 22050, 24000, 16000 , 11025 , 12000 , 8000 };
|
||||
|
||||
int stream_head_read(struct reader *rd,unsigned long *newhead);
|
||||
int stream_read_raw(struct reader *rd,unsigned char *buf, int size);
|
||||
|
||||
void set_synth_functions(struct frame *fr)
|
||||
{
|
||||
#ifdef USE_3DNOW
|
||||
static func_dct36 funcs_dct36[2] = {dct36 , dct36_3dnow};
|
||||
#endif
|
||||
|
||||
fr->synth = synth_1to1;
|
||||
fr->synth_mono = synth_1to1_mono2stereo;;
|
||||
|
||||
/* TODO: make autodetection for _all_ x86 optimizations (maybe just for i586+ and keep separate 486 build?) */
|
||||
#ifdef USE_3DNOW
|
||||
/* check cpuflags bit 31 (3DNow!) and 23 (MMX) */
|
||||
if((param.stat_3dnow < 2) &&
|
||||
((param.stat_3dnow == 1) ||
|
||||
(getcpuflags() & 0x80800000) == 0x80800000))
|
||||
{
|
||||
fr->synth = funcs[2][ds]; /* 3DNow! optimized synth_1to1() */
|
||||
fr->dct36 = funcs_dct36[1]; /* 3DNow! optimized dct36() */
|
||||
}
|
||||
else
|
||||
{
|
||||
fr->dct36 = funcs_dct36[0];
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
int __stdcall create_reader(struct reader *rd,byte *buffer, int buffsize)
|
||||
{ rd->head_read = stream_head_read;
|
||||
rd->read_frame_body = stream_read_raw;
|
||||
|
||||
rd->buffer = buffer;
|
||||
rd->stream = buffer;
|
||||
rd->strpos = 0;
|
||||
|
||||
rd->strremain = 0;
|
||||
rd->filepos = 0;
|
||||
return 1;
|
||||
};
|
||||
|
||||
int __stdcall init_reader(struct reader *rd, char *file)
|
||||
{ FILEINFO fileinfo;
|
||||
int retval;
|
||||
int bytes;
|
||||
|
||||
rd->hFile = file;
|
||||
get_fileinfo(file, &fileinfo);
|
||||
|
||||
rd->filelen = fileinfo.size;
|
||||
rd->strpos = 0;
|
||||
retval=read_file (file,rd->buffer,0,0x10000,&bytes);
|
||||
|
||||
if (retval) return 0;
|
||||
|
||||
rd->strremain = bytes;
|
||||
rd->filepos = bytes;
|
||||
return 1;
|
||||
};
|
||||
|
||||
static int fill_reader(struct reader *rd)
|
||||
{ int retval;
|
||||
int bytes;
|
||||
|
||||
mem_cpy(rd->buffer,rd->stream,rd->strremain);
|
||||
rd->stream = rd->buffer;
|
||||
|
||||
retval=read_file (rd->hFile,rd->buffer+rd->strremain,rd->filepos,
|
||||
0x10000-rd->strremain,&bytes);
|
||||
if (retval) return 0;
|
||||
if(!bytes) return 0;
|
||||
rd->strremain+=bytes;
|
||||
rd->filepos+=bytes;
|
||||
rd->strpos = 0;
|
||||
return 1;
|
||||
};
|
||||
|
||||
int __stdcall set_reader(struct reader *rd, unsigned int filepos)
|
||||
{ int retval;
|
||||
unsigned int bytes;
|
||||
retval=read_file (rd->hFile,rd->buffer,filepos,0x10000,&bytes);
|
||||
if (retval) return 0;
|
||||
rd->stream = rd->buffer;
|
||||
rd->strremain=bytes;
|
||||
rd->filepos=filepos+bytes;
|
||||
rd->strpos = 0;
|
||||
return 1;
|
||||
};
|
||||
|
||||
static int stream_head_read(struct reader *rd,unsigned long *newhead)
|
||||
{
|
||||
if(rd->strremain < 4)
|
||||
if( !fill_reader(rd))
|
||||
return 0;
|
||||
*newhead = (rd->stream[0]<<24)|(rd->stream[1] << 16)|
|
||||
(rd->stream[2] << 8)| rd->stream[3];
|
||||
rd->strpos+=4;
|
||||
rd->stream+=4;
|
||||
rd->strremain-=4;
|
||||
return TRUE;
|
||||
};
|
||||
|
||||
int stream_read_raw(struct reader *rd,unsigned char *buf, int size)
|
||||
{
|
||||
if(rd->strremain < size)
|
||||
if( !fill_reader(rd))
|
||||
return 0;
|
||||
|
||||
mem_cpy(buf,rd->stream,size);
|
||||
rd->strpos+=size;
|
||||
rd->stream+=size;
|
||||
rd->strremain-=size;
|
||||
return 1;
|
||||
};
|
||||
|
||||
void set_pointer(long backstep)
|
||||
{
|
||||
bsi.wordpointer = bsbuf + ssize - backstep;
|
||||
if (backstep)
|
||||
mem_cpy(bsi.wordpointer,bsbufold+fsizeold-backstep,backstep);
|
||||
bsi.bitindex = 0;
|
||||
}
|
||||
|
||||
int head_check(unsigned long head)
|
||||
{ if
|
||||
(
|
||||
/* first 11 bits are set to 1 for frame sync */
|
||||
((head & 0xffe00000) != 0xffe00000)
|
||||
||
|
||||
/* layer: 01,10,11 is 1,2,3; 00 is reserved */
|
||||
(!((head>>17)&3))
|
||||
||
|
||||
/* 1111 means bad bitrate */
|
||||
(((head>>12)&0xf) == 0xf)
|
||||
||
|
||||
/* 0000 means free format... */
|
||||
(((head>>12)&0xf) == 0x0)
|
||||
||
|
||||
/* sampling freq: 11 is reserved */
|
||||
(((head>>10)&0x3) == 0x3 )
|
||||
/* here used to be a mpeg 2.5 check... re-enabled 2.5 decoding due to lack of evidence that it is really not good */
|
||||
)
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
/* if no check failed, the header is valid (hopefully)*/
|
||||
else
|
||||
{
|
||||
return TRUE;
|
||||
}
|
||||
}
|
||||
|
||||
int __stdcall decode_header(struct frame *fr,unsigned long newhead)
|
||||
{
|
||||
if(!head_check(newhead))
|
||||
return 0;
|
||||
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(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;
|
||||
|
||||
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;
|
||||
|
||||
oldhead = newhead;
|
||||
|
||||
if(!fr->bitrate_index)
|
||||
return (0);
|
||||
|
||||
switch(fr->lay)
|
||||
{ case 1:
|
||||
fr->do_layer = do_layer1;
|
||||
#ifdef VARMODESUPPORT
|
||||
if (varmode) {
|
||||
error("Sorry, layer-1 not supported in varmode.");
|
||||
return (0);
|
||||
}
|
||||
#endif
|
||||
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;
|
||||
break;
|
||||
case 2:
|
||||
fr->do_layer = do_layer2;
|
||||
#ifdef VARMODESUPPORT
|
||||
if (varmode) {
|
||||
error("Sorry, layer-2 not supported in varmode.");
|
||||
return (0);
|
||||
}
|
||||
#endif
|
||||
fr->framesize = (long) tabsel_123[fr->lsf][1][fr->bitrate_index] * 144000;
|
||||
fr->framesize /= freqs[fr->sampling_frequency];
|
||||
fr->framesize += fr->padding - 4;
|
||||
break;
|
||||
case 3:
|
||||
fr->do_layer = do_layer3;
|
||||
if(fr->lsf)
|
||||
ssize = (fr->stereo == 1) ? 9 : 17;
|
||||
else
|
||||
ssize = (fr->stereo == 1) ? 17 : 32;
|
||||
if(fr->error_protection)
|
||||
ssize += 2;
|
||||
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:
|
||||
return (0);
|
||||
}
|
||||
if (fr->framesize > MAXFRAMESIZE)
|
||||
return (0);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
int read_frame(struct reader *rd, struct frame *fr)
|
||||
{ unsigned long newhead;
|
||||
static unsigned char ssave[34];
|
||||
//off_t framepos;
|
||||
fsizeold=fr->framesize; /* for Layer3 */
|
||||
|
||||
read_again:
|
||||
|
||||
if(!rd->head_read(rd,&newhead))
|
||||
return FALSE;
|
||||
|
||||
if(!decode_header(fr,newhead))
|
||||
{ rd->strpos-=3;
|
||||
rd->stream-=3;
|
||||
rd->strremain+=3;
|
||||
goto read_again;
|
||||
};
|
||||
|
||||
#if 0
|
||||
if(1 || oldhead != newhead || !oldhead)
|
||||
{
|
||||
|
||||
init_resync:
|
||||
|
||||
#ifdef SKIP_JUNK
|
||||
/* watch out for junk/tags on beginning of stream by invalid header */
|
||||
if(!firsthead && !head_check(newhead) && !free_format_header(newhead)) {
|
||||
int i;
|
||||
|
||||
/* check for id3v2; first three bytes (of 4) are "ID3" */
|
||||
if((newhead & (unsigned long) 0xffffff00) == (unsigned long) 0x49443300)
|
||||
{
|
||||
int id3length = 0;
|
||||
id3length = parse_new_id3(newhead, rd);
|
||||
goto read_again;
|
||||
}
|
||||
else if(param.verbose > 1) fprintf(stderr,"Note: Junk at the beginning (0x%08lx)\n",newhead);
|
||||
|
||||
/* I even saw RIFF headers at the beginning of MPEG streams ;( */
|
||||
if(newhead == ('R'<<24)+('I'<<16)+('F'<<8)+'F') {
|
||||
if(param.verbose > 1) fprintf(stderr, "Note: Looks like a RIFF header.\n");
|
||||
if(!rd->head_read(rd,&newhead))
|
||||
return 0;
|
||||
while(newhead != ('d'<<24)+('a'<<16)+('t'<<8)+'a') {
|
||||
if(!rd->head_shift(rd,&newhead))
|
||||
return 0;
|
||||
}
|
||||
if(!rd->head_read(rd,&newhead))
|
||||
return 0;
|
||||
if(param.verbose > 1) fprintf(stderr,"Note: Skipped RIFF header!\n");
|
||||
goto read_again;
|
||||
}
|
||||
/* unhandled junk... just continue search for a header */
|
||||
/* step in byte steps through next 64K */
|
||||
for(i=0;i<65536;i++) {
|
||||
if(!rd->head_shift(rd,&newhead))
|
||||
return 0;
|
||||
/* if(head_check(newhead)) */
|
||||
if(head_check(newhead) && decode_header(fr, newhead))
|
||||
break;
|
||||
}
|
||||
if(i == 65536) {
|
||||
if(!param.quiet) error("Giving up searching valid MPEG header after 64K of junk.");
|
||||
return 0;
|
||||
}
|
||||
/*
|
||||
* should we additionaly check, whether a new frame starts at
|
||||
* the next expected position? (some kind of read ahead)
|
||||
* We could implement this easily, at least for files.
|
||||
*/
|
||||
}
|
||||
#endif
|
||||
|
||||
/* first attempt of read ahead check to find the real first header; cannot believe what junk is out there! */
|
||||
/* for now, a spurious first free format header screws up here; need free format support for detecting false free format headers... */
|
||||
if(!firsthead && rd->flags & READER_SEEKABLE && head_check(newhead) && decode_header(fr, newhead))
|
||||
{
|
||||
unsigned long nexthead = 0;
|
||||
int hd = 0;
|
||||
off_t start = rd->tell(rd);
|
||||
debug1("doing ahead check with BPF %d", fr->framesize+4);
|
||||
/* step framesize bytes forward and read next possible header*/
|
||||
if(rd->back_bytes(rd, -fr->framesize))
|
||||
{
|
||||
error("cannot seek!");
|
||||
return 0;
|
||||
}
|
||||
hd = rd->head_read(rd,&nexthead);
|
||||
if(rd->back_bytes(rd, rd->tell(rd)-start))
|
||||
{
|
||||
error("cannot seek!");
|
||||
return 0;
|
||||
}
|
||||
if(!hd)
|
||||
{
|
||||
warning("cannot read next header, a one-frame stream? Duh...");
|
||||
}
|
||||
else
|
||||
{
|
||||
debug2("does next header 0x%08lx match first 0x%08lx?", nexthead, newhead);
|
||||
/* not allowing free format yet */
|
||||
if(!head_check(nexthead) || (nexthead & HDRCMPMASK) != (newhead & HDRCMPMASK))
|
||||
{
|
||||
debug("No, the header was not valid, start from beginning...");
|
||||
/* try next byte for valid header */
|
||||
if(rd->back_bytes(rd, 3))
|
||||
{
|
||||
error("cannot seek!");
|
||||
return 0;
|
||||
}
|
||||
goto read_again;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* why has this head check been avoided here before? */
|
||||
if(!head_check(newhead))
|
||||
{
|
||||
if(!firsthead && free_format_header(newhead))
|
||||
{
|
||||
error1("Header 0x%08lx seems to indicate a free format stream; I do not handle that yet", newhead);
|
||||
goto read_again;
|
||||
return 0;
|
||||
}
|
||||
/* and those ugly ID3 tags */
|
||||
if((newhead & 0xffffff00) == ('T'<<24)+('A'<<16)+('G'<<8)) {
|
||||
rd->skip_bytes(rd,124);
|
||||
if (param.verbose > 1) fprintf(stderr,"Note: Skipped ID3 Tag!\n");
|
||||
goto read_again;
|
||||
}
|
||||
/* duplicated code from above! */
|
||||
/* check for id3v2; first three bytes (of 4) are "ID3" */
|
||||
if((newhead & (unsigned long) 0xffffff00) == (unsigned long) 0x49443300)
|
||||
{
|
||||
int id3length = 0;
|
||||
id3length = parse_new_id3(newhead, rd);
|
||||
goto read_again;
|
||||
}
|
||||
else if (give_note)
|
||||
{
|
||||
fprintf(stderr,"Note: Illegal Audio-MPEG-Header 0x%08lx at offset 0x%lx.\n", newhead,rd->tell(rd)-4);
|
||||
}
|
||||
|
||||
if(give_note && (newhead & 0xffffff00) == ('b'<<24)+('m'<<16)+('p'<<8)) fprintf(stderr,"Note: Could be a BMP album art.\n");
|
||||
if (param.tryresync || do_recover) {
|
||||
int try = 0;
|
||||
/* TODO: make this more robust, I'd like to cat two mp3 fragments together (in a dirty way) and still have mpg123 beign able to decode all it somehow. */
|
||||
if(give_note) fprintf(stderr, "Note: Trying to resync...\n");
|
||||
/* Read more bytes until we find something that looks
|
||||
reasonably like a valid header. This is not a
|
||||
perfect strategy, but it should get us back on the
|
||||
track within a short time (and hopefully without
|
||||
too much distortion in the audio output). */
|
||||
do {
|
||||
if(!rd->head_shift(rd,&newhead))
|
||||
return 0;
|
||||
/* debug2("resync try %i, got newhead 0x%08lx", try, newhead); */
|
||||
if (!oldhead)
|
||||
{
|
||||
debug("going to init_resync...");
|
||||
goto init_resync; /* "considered harmful", eh? */
|
||||
}
|
||||
/* we should perhaps collect a list of valid headers that occured in file... there can be more */
|
||||
/* Michael's new resync routine seems to work better with the one frame readahead (and some input buffering?) */
|
||||
} while
|
||||
(
|
||||
++try < RESYNC_LIMIT
|
||||
&& (newhead & HDRCMPMASK) != (oldhead & HDRCMPMASK)
|
||||
&& (newhead & HDRCMPMASK) != (firsthead & HDRCMPMASK)
|
||||
);
|
||||
/* too many false positives
|
||||
}while (!(head_check(newhead) && decode_header(fr, newhead))); */
|
||||
if(try == RESYNC_LIMIT)
|
||||
{
|
||||
error("giving up resync - your stream is not nice... perhaps an improved routine could catch up");
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (give_note)
|
||||
fprintf (stderr, "Note: Skipped %d bytes in input.\n", try);
|
||||
}
|
||||
else
|
||||
{
|
||||
error("not attempting to resync...");
|
||||
return (0);
|
||||
}
|
||||
}
|
||||
|
||||
if (!firsthead) {
|
||||
if(!decode_header(fr,newhead))
|
||||
{
|
||||
error("decode header failed before first valid one, going to read again");
|
||||
goto read_again;
|
||||
}
|
||||
}
|
||||
else
|
||||
if(!decode_header(fr,newhead))
|
||||
{
|
||||
error("decode header failed - goto resync");
|
||||
/* return 0; */
|
||||
goto init_resync;
|
||||
}
|
||||
}
|
||||
else
|
||||
fr->header_change = 0;
|
||||
#endif
|
||||
|
||||
bsbufold = bsbuf;
|
||||
bsbuf = bsspace[bsnum]+512;
|
||||
bsnum = (bsnum + 1) & 1;
|
||||
/* if filepos is invalid, so is framepos */
|
||||
//framepos = rd->filepos - 4;
|
||||
/* read main data into memory */
|
||||
/* 0 is error! */
|
||||
|
||||
if(!rd->read_frame_body(rd,bsbuf,fr->framesize))
|
||||
return 0;
|
||||
|
||||
#if 0
|
||||
if(!firsthead)
|
||||
{
|
||||
/* following stuff is actually layer3 specific (in practice, not in theory) */
|
||||
if(fr->lay == 3)
|
||||
{
|
||||
/*
|
||||
going to look for Xing or Info at some position after the header
|
||||
MPEG 1 MPEG 2/2.5 (LSF)
|
||||
Stereo, Joint Stereo, Dual Channel 32 17
|
||||
Mono 17 9
|
||||
|
||||
Also, how to avoid false positives? I guess I should interpret more of the header to rule that out(?).
|
||||
I hope that ensuring all zeros until tag start is enough.
|
||||
*/
|
||||
size_t lame_offset = (fr->stereo == 2) ? (fr->lsf ? 17 : 32 ) : (fr->lsf ? 9 : 17);
|
||||
if(fr->framesize >= 120+lame_offset) /* traditional Xing header is 120 bytes */
|
||||
{
|
||||
size_t i;
|
||||
int lame_type = 0;
|
||||
/* only search for tag when all zero before it (apart from checksum) */
|
||||
for(i=2; i < lame_offset; ++i) if(bsbuf[i] != 0) break;
|
||||
if(i == lame_offset)
|
||||
{
|
||||
if
|
||||
(
|
||||
(bsbuf[lame_offset] == 'I')
|
||||
&& (bsbuf[lame_offset+1] == 'n')
|
||||
&& (bsbuf[lame_offset+2] == 'f')
|
||||
&& (bsbuf[lame_offset+3] == 'o')
|
||||
)
|
||||
{
|
||||
lame_type = 1; /* We still have to see what there is */
|
||||
}
|
||||
else if
|
||||
(
|
||||
(bsbuf[lame_offset] == 'X')
|
||||
&& (bsbuf[lame_offset+1] == 'i')
|
||||
&& (bsbuf[lame_offset+2] == 'n')
|
||||
&& (bsbuf[lame_offset+3] == 'g')
|
||||
)
|
||||
{
|
||||
lame_type = 2;
|
||||
vbr = VBR; /* Xing header means always VBR */
|
||||
}
|
||||
if(lame_type)
|
||||
{
|
||||
unsigned long xing_flags;
|
||||
|
||||
/* we have one of these headers... */
|
||||
if(param.verbose > 1) fprintf(stderr, "Note: Xing/Lame/Info header detected\n");
|
||||
/* now interpret the Xing part, I have 120 bytes total for sure */
|
||||
/* there are 4 bytes for flags, but only the last byte contains known ones */
|
||||
lame_offset += 4; /* now first byte after Xing/Name */
|
||||
/* 4 bytes dword for flags */
|
||||
#define make_long(a, o) ((((unsigned long) a[o]) << 24) | (((unsigned long) a[o+1]) << 16) | (((unsigned long) a[o+2]) << 8) | ((unsigned long) a[o+3]))
|
||||
/* 16 bit */
|
||||
#define make_short(a,o) ((((unsigned short) a[o]) << 8) | ((unsigned short) a[o+1]))
|
||||
xing_flags = make_long(bsbuf, lame_offset);
|
||||
lame_offset += 4;
|
||||
debug1("Xing: flags 0x%08lx", xing_flags);
|
||||
if(xing_flags & 1) /* frames */
|
||||
{
|
||||
/*
|
||||
In theory, one should use that value for skipping...
|
||||
When I know the exact number of samples I could simply count in audio_flush,
|
||||
but that's problematic with seeking and such.
|
||||
I still miss the real solution for detecting the end.
|
||||
*/
|
||||
track_frames = make_long(bsbuf, lame_offset);
|
||||
if(track_frames > TRACK_MAX_FRAMES) track_frames = 0; /* endless stream? */
|
||||
#ifdef GAPLESS
|
||||
/* if no further info there, remove/add at least the decoder delay */
|
||||
if(param.gapless)
|
||||
{
|
||||
unsigned long length = track_frames * spf(fr);
|
||||
if(length > 1)
|
||||
layer3_gapless_init(DECODER_DELAY+GAP_SHIFT, length+DECODER_DELAY+GAP_SHIFT);
|
||||
}
|
||||
#endif
|
||||
debug1("Xing: %lu frames", track_frames);
|
||||
lame_offset += 4;
|
||||
}
|
||||
if(xing_flags & 0x2) /* bytes */
|
||||
{
|
||||
#ifdef DEBUG
|
||||
unsigned long xing_bytes = make_long(bsbuf, lame_offset);
|
||||
debug1("Xing: %lu bytes", xing_bytes);
|
||||
#endif
|
||||
lame_offset += 4;
|
||||
}
|
||||
if(xing_flags & 0x4) /* TOC */
|
||||
{
|
||||
lame_offset += 100; /* just skip */
|
||||
}
|
||||
if(xing_flags & 0x8) /* VBR quality */
|
||||
{
|
||||
#ifdef DEBUG
|
||||
unsigned long xing_quality = make_long(bsbuf, lame_offset);
|
||||
debug1("Xing: quality = %lu", xing_quality);
|
||||
#endif
|
||||
lame_offset += 4;
|
||||
}
|
||||
/* I guess that either 0 or LAME extra data follows */
|
||||
/* there may this crc16 be floating around... (?) */
|
||||
if(bsbuf[lame_offset] != 0)
|
||||
{
|
||||
unsigned char lame_vbr;
|
||||
float replay_gain[2] = {0,0};
|
||||
float peak = 0;
|
||||
float gain_offset = 0; /* going to be +6 for old lame that used 83dB */
|
||||
char nb[10];
|
||||
memcpy(nb, bsbuf+lame_offset, 9);
|
||||
nb[9] = 0;
|
||||
debug1("Info: Encoder: %s", nb);
|
||||
if(!strncmp("LAME", nb, 4))
|
||||
{
|
||||
gain_offset = 6;
|
||||
debug("TODO: finish lame detetcion...");
|
||||
}
|
||||
lame_offset += 9;
|
||||
/* the 4 big bits are tag revision, the small bits vbr method */
|
||||
lame_vbr = bsbuf[lame_offset] & 15;
|
||||
debug1("Info: rev %u", bsbuf[lame_offset] >> 4);
|
||||
debug1("Info: vbr mode %u", lame_vbr);
|
||||
lame_offset += 1;
|
||||
switch(lame_vbr)
|
||||
{
|
||||
/* from rev1 proposal... not sure if all good in practice */
|
||||
case 1:
|
||||
case 8: vbr = CBR; break;
|
||||
case 2:
|
||||
case 9: vbr = ABR; break;
|
||||
default: vbr = VBR; /* 00==unknown is taken as VBR */
|
||||
}
|
||||
/* skipping: lowpass filter value */
|
||||
lame_offset += 1;
|
||||
/* replaygain */
|
||||
/* 32bit float: peak amplitude -- why did I parse it as int before??*/
|
||||
/* Ah, yes, lame seems to store it as int since some day in 2003; I've only seen zeros anyway until now, bah! */
|
||||
if
|
||||
(
|
||||
(bsbuf[lame_offset] != 0)
|
||||
|| (bsbuf[lame_offset+1] != 0)
|
||||
|| (bsbuf[lame_offset+2] != 0)
|
||||
|| (bsbuf[lame_offset+3] != 0)
|
||||
)
|
||||
{
|
||||
debug("Wow! Is there _really_ a non-zero peak value? Now is it stored as float or int - how should I know?");
|
||||
peak = *(float*) (bsbuf+lame_offset);
|
||||
}
|
||||
debug1("Info: peak = %f (I won't use this)", peak);
|
||||
peak = 0; /* until better times arrived */
|
||||
lame_offset += 4;
|
||||
/*
|
||||
ReplayGain values - lame only writes radio mode gain...
|
||||
16bit gain, 3 bits name, 3 bits originator, sign (1=-, 0=+), dB value*10 in 9 bits (fixed point)
|
||||
ignore the setting if name or originator == 000!
|
||||
radio 0 0 1 0 1 1 1 0 0 1 1 1 1 1 0 1
|
||||
audiophile 0 1 0 0 1 0 0 0 0 0 0 1 0 1 0 0
|
||||
*/
|
||||
|
||||
for(i =0; i < 2; ++i)
|
||||
{
|
||||
unsigned char origin = (bsbuf[lame_offset] >> 2) & 0x7; /* the 3 bits after that... */
|
||||
if(origin != 0)
|
||||
{
|
||||
unsigned char gt = bsbuf[lame_offset] >> 5; /* only first 3 bits */
|
||||
if(gt == 1) gt = 0; /* radio */
|
||||
else if(gt == 2) gt = 1; /* audiophile */
|
||||
else continue;
|
||||
/* get the 9 bits into a number, divide by 10, multiply sign... happy bit banging */
|
||||
replay_gain[0] = ((bsbuf[lame_offset] & 0x2) ? -0.1 : 0.1) * (make_short(bsbuf, lame_offset) & 0x1f);
|
||||
}
|
||||
lame_offset += 2;
|
||||
}
|
||||
debug1("Info: Radio Gain = %03.1fdB", replay_gain[0]);
|
||||
debug1("Info: Audiophile Gain = %03.1fdB", replay_gain[1]);
|
||||
for(i=0; i < 2; ++i)
|
||||
{
|
||||
if(rva_level[i] <= 0)
|
||||
{
|
||||
rva_peak[i] = 0; /* at some time the parsed peak should be used */
|
||||
rva_gain[i] = replay_gain[i];
|
||||
rva_level[i] = 0;
|
||||
}
|
||||
}
|
||||
lame_offset += 1; /* skipping encoding flags byte */
|
||||
if(vbr == ABR)
|
||||
{
|
||||
abr_rate = bsbuf[lame_offset];
|
||||
debug1("Info: ABR rate = %u", abr_rate);
|
||||
}
|
||||
lame_offset += 1;
|
||||
/* encoder delay and padding, two 12 bit values... lame does write them from int ...*/
|
||||
#ifdef GAPLESS
|
||||
if(param.gapless)
|
||||
{
|
||||
/*
|
||||
Temporary hack that doesn't work with seeking and also is not waterproof but works most of the time;
|
||||
in future the lame delay/padding and frame number info should be passed to layer3.c and the junk samples avoided at the source.
|
||||
*/
|
||||
unsigned long length = track_frames * spf(fr);
|
||||
unsigned long skipbegin = DECODER_DELAY + ((((int) bsbuf[lame_offset]) << 4) | (((int) bsbuf[lame_offset+1]) >> 4));
|
||||
unsigned long skipend = -DECODER_DELAY + (((((int) bsbuf[lame_offset+1]) << 8) | (((int) bsbuf[lame_offset+2]))) & 0xfff);
|
||||
debug3("preparing gapless mode for layer3: length %lu, skipbegin %lu, skipend %lu", length, skipbegin, skipend);
|
||||
if(length > 1)
|
||||
layer3_gapless_init(skipbegin+GAP_SHIFT, (skipend < length) ? length-skipend+GAP_SHIFT : length+GAP_SHIFT);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
/* switch buffer back ... */
|
||||
bsbuf = bsspace[bsnum]+512;
|
||||
bsnum = (bsnum + 1) & 1;
|
||||
goto read_again;
|
||||
}
|
||||
}
|
||||
}
|
||||
} /* end block for Xing/Lame/Info tag */
|
||||
firsthead = newhead; /* _now_ it's time to store it... the first real header */
|
||||
debug1("firsthead: %08lx", firsthead);
|
||||
/* now adjust volume */
|
||||
do_rva();
|
||||
/* and print id3 info */
|
||||
if(!param.quiet) print_id3_tag(rd->flags & READER_ID3TAG ? rd->id3buf : NULL);
|
||||
}
|
||||
#endif
|
||||
|
||||
bsi.bitindex = 0;
|
||||
bsi.wordpointer = (unsigned char *) bsbuf;
|
||||
set_synth_functions(fr);
|
||||
if (fr->error_protection)
|
||||
getbits(16);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
|
||||
#if 0
|
||||
static int stream_back_bytes(struct reader *rds, off_t bytes)
|
||||
{
|
||||
if(stream_lseek(rds,-bytes,SEEK_CUR) < 0)
|
||||
return -1;
|
||||
/* you sure you want the buffer to resync here? */
|
||||
if(param.usebuffer)
|
||||
buffer_resync();
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/* this function strangely is define to seek num frames _back_ (and is called with -offset - duh!) */
|
||||
/* also... let that int be a long in future! */
|
||||
static int stream_back_frame(struct reader *rds,struct frame *fr,long num)
|
||||
{
|
||||
if(rds->flags & READER_SEEKABLE)
|
||||
{
|
||||
unsigned long newframe, preframe;
|
||||
if(num > 0) /* back! */
|
||||
{
|
||||
if(num > fr->num) newframe = 0;
|
||||
else newframe = fr->num-num;
|
||||
}
|
||||
else newframe = fr->num-num;
|
||||
|
||||
/* two leading frames? hm, doesn't seem to be really needed... */
|
||||
/*if(newframe > 1) newframe -= 2;
|
||||
else newframe = 0;*/
|
||||
|
||||
/* now seek to nearest leading index position and read from there until newframe is reached */
|
||||
if(stream_lseek(rds,frame_index_find(newframe, &preframe),SEEK_SET) < 0)
|
||||
return -1;
|
||||
|
||||
debug2("going to %lu; just got %lu", newframe, preframe);
|
||||
|
||||
fr->num = preframe;
|
||||
|
||||
while(fr->num < newframe)
|
||||
{
|
||||
/* try to be non-fatal now... frameNum only gets advanced on success anyway */
|
||||
if(!read_frame(fr)) break;
|
||||
}
|
||||
|
||||
/* this is not needed at last? */
|
||||
/*read_frame(fr);
|
||||
read_frame(fr);*/
|
||||
|
||||
if(fr->lay == 3) {
|
||||
set_pointer(512);
|
||||
}
|
||||
|
||||
debug1("arrived at %lu", fr->num);
|
||||
|
||||
if(param.usebuffer)
|
||||
buffer_resync();
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
else return -1; /* invalid, no seek happened */
|
||||
}
|
||||
|
||||
static int stream_head_read(struct reader *rds,unsigned long *newhead)
|
||||
{
|
||||
unsigned char hbuf[4];
|
||||
|
||||
if(fullread(rds,hbuf,4) != 4)
|
||||
return FALSE;
|
||||
|
||||
*newhead = ((unsigned long) hbuf[0] << 24) |
|
||||
((unsigned long) hbuf[1] << 16) |
|
||||
((unsigned long) hbuf[2] << 8) |
|
||||
(unsigned long) hbuf[3];
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static int stream_head_shift(struct reader *rds,unsigned long *head)
|
||||
{
|
||||
unsigned char hbuf;
|
||||
|
||||
if(fullread(rds,&hbuf,1) != 1)
|
||||
return 0;
|
||||
*head <<= 8;
|
||||
*head |= hbuf;
|
||||
*head &= 0xffffffff;
|
||||
return 1;
|
||||
}
|
||||
|
||||
static off_t stream_skip_bytes(struct reader *rds,off_t len)
|
||||
{
|
||||
if (rds->filelen >= 0) {
|
||||
off_t ret = stream_lseek(rds, len, SEEK_CUR);
|
||||
if (param.usebuffer)
|
||||
buffer_resync();
|
||||
return ret;
|
||||
} else if (len >= 0) {
|
||||
unsigned char buf[1024]; /* ThOr: Compaq cxx complained and it makes sense to me... or should one do a cast? What for? */
|
||||
off_t ret;
|
||||
while (len > 0) {
|
||||
off_t num = len < sizeof(buf) ? len : sizeof(buf);
|
||||
ret = fullread(rds, buf, num);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
len -= ret;
|
||||
}
|
||||
return rds->filepos;
|
||||
} else
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int stream_read_frame_body(struct reader *rds,unsigned char *buf,
|
||||
int size)
|
||||
{
|
||||
long l;
|
||||
|
||||
if( (l=fullread(rds,buf,size)) != size)
|
||||
{
|
||||
if(l <= 0)
|
||||
return 0;
|
||||
memset(buf+l,0,size-l);
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static off_t stream_tell(struct reader *rds)
|
||||
{
|
||||
return rds->filepos;
|
||||
}
|
||||
|
||||
static void stream_rewind(struct reader *rds)
|
||||
{
|
||||
stream_lseek(rds,0,SEEK_SET);
|
||||
if(param.usebuffer)
|
||||
buffer_resync();
|
||||
}
|
||||
|
||||
static off_t get_fileinfo(struct reader *rds,char *buf)
|
||||
{
|
||||
off_t len;
|
||||
|
||||
if((len=lseek(rds->filept,0,SEEK_END)) < 0) {
|
||||
return -1;
|
||||
}
|
||||
if(lseek(rds->filept,-128,SEEK_END) < 0)
|
||||
return -1;
|
||||
if(fullread(rds,(unsigned char *)buf,128) != 128) {
|
||||
return -1;
|
||||
}
|
||||
if(!strncmp(buf,"TAG",3)) {
|
||||
len -= 128;
|
||||
}
|
||||
if(lseek(rds->filept,0,SEEK_SET) < 0)
|
||||
return -1;
|
||||
if(len <= 0)
|
||||
return -1;
|
||||
return len;
|
||||
}
|
||||
|
||||
#endif
|
||||
159
programs/media/ac97snd/trunk/mpg/tabinit.c
Normal file
159
programs/media/ac97snd/trunk/mpg/tabinit.c
Normal file
@ -0,0 +1,159 @@
|
||||
/*
|
||||
tabinit.c: initialize tables...
|
||||
|
||||
copyright ?-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
|
||||
see COPYING and AUTHORS files in distribution or http://mpg123.de
|
||||
initially written by Michael Hipp
|
||||
*/
|
||||
|
||||
//#include <stdlib.h>
|
||||
|
||||
//#include "config.h"
|
||||
#include "mpg123.h"
|
||||
//#include "debug.h"
|
||||
|
||||
static unsigned char *conv16to8_buf = NULL;
|
||||
unsigned char *conv16to8;
|
||||
|
||||
#ifndef USE_MMX
|
||||
real decwin[512+32];
|
||||
#ifdef USE_ALTIVEC
|
||||
static real __attribute__ ((aligned (16))) cos64[16];
|
||||
static real __attribute__ ((aligned (16))) cos32[8];
|
||||
static real __attribute__ ((aligned (16))) cos16[4];
|
||||
static real __attribute__ ((aligned (16))) cos8[2];
|
||||
static real __attribute__ ((aligned (16))) cos4[1];
|
||||
#else
|
||||
static real cos64[16],cos32[8],cos16[4],cos8[2],cos4[1];
|
||||
#endif
|
||||
|
||||
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 };
|
||||
|
||||
#pragma warning(disable:4244)
|
||||
void make_decode_tables(long scaleval)
|
||||
{
|
||||
int i,j,k,kr,divv;
|
||||
real *costab;
|
||||
int idx;
|
||||
|
||||
|
||||
for(i=0;i<5;i++)
|
||||
{
|
||||
kr=0x10>>i; divv=0x40>>i;
|
||||
costab = pnts[i];
|
||||
for(k=0;k<kr;k++)
|
||||
costab[k] = DOUBLE_TO_REAL(1.0 / (2.0 * cos(M_PI * ((double) k * 2.0 + 1.0) / (double) divv)));
|
||||
|
||||
}
|
||||
|
||||
idx = 0;
|
||||
scaleval = -scaleval;
|
||||
for(i=0,j=0;i<256;i++,j++,idx+=32)
|
||||
{
|
||||
if(idx < 512+16)
|
||||
decwin[idx+16] = decwin[idx] = DOUBLE_TO_REAL((double) intwinbase[j] / 65536.0 * (double) scaleval);
|
||||
|
||||
if(i % 32 == 31)
|
||||
idx -= 1023;
|
||||
if(i % 64 == 63)
|
||||
scaleval = - scaleval;
|
||||
}
|
||||
|
||||
for( /* i=256 */ ;i<512;i++,j--,idx+=32)
|
||||
{
|
||||
if(idx < 512+16)
|
||||
decwin[idx+16] = decwin[idx] = DOUBLE_TO_REAL((double) intwinbase[j] / 65536.0 * (double) scaleval);
|
||||
|
||||
if(i % 32 == 31)
|
||||
idx -= 1023;
|
||||
if(i % 64 == 63)
|
||||
scaleval = - scaleval;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
#if 0
|
||||
int make_conv16to8_table(int mode)
|
||||
{
|
||||
int i;
|
||||
|
||||
/*
|
||||
* ????: 8.0 is right but on SB cards '2.0' is a better value ???
|
||||
*/
|
||||
const double mul = 8.0;
|
||||
|
||||
if(!conv16to8_buf) {
|
||||
conv16to8_buf = (unsigned char *) malloc(8192);
|
||||
if(!conv16to8_buf) {
|
||||
error("Can't allocate 16 to 8 converter table!");
|
||||
return -1;
|
||||
}
|
||||
conv16to8 = conv16to8_buf + 4096;
|
||||
}
|
||||
|
||||
if(mode == AUDIO_FORMAT_ULAW_8) {
|
||||
double m=127.0 / log(256.0);
|
||||
int c1;
|
||||
|
||||
for(i=-4096;i<4096;i++) {
|
||||
/* dunno whether this is a valid transformation rule ?!?!? */
|
||||
if(i < 0)
|
||||
c1 = 127 - (int) (log( 1.0 - 255.0 * (double) i*mul / 32768.0 ) * m);
|
||||
else
|
||||
c1 = 255 - (int) (log( 1.0 + 255.0 * (double) i*mul / 32768.0 ) * m);
|
||||
if(c1 < 0 || c1 > 255)
|
||||
fprintf(stderr,"Converror %d %d\n",i,c1);
|
||||
if(c1 == 0)
|
||||
c1 = 2;
|
||||
conv16to8[i] = (unsigned char) c1;
|
||||
}
|
||||
}
|
||||
else if(mode == AUDIO_FORMAT_SIGNED_8) {
|
||||
for(i=-4096;i<4096;i++) {
|
||||
conv16to8[i] = i>>5;
|
||||
}
|
||||
}
|
||||
else if(mode == AUDIO_FORMAT_UNSIGNED_8) {
|
||||
for(i=-4096;i<4096;i++) {
|
||||
conv16to8[i] = (i>>5)+128;
|
||||
}
|
||||
}
|
||||
else {
|
||||
for(i=-4096;i<4096;i++) {
|
||||
conv16to8[i] = 0;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user