mirror of
https://github.com/mpv-player/mpv
synced 2025-04-10 19:51:43 +00:00
d1a54d5696
These includes were added earlier after the definition of the DECLARE_ALIGNED and DECLARE_ASM_CONST macros were moved to this header in FFmpeg. However now those macros are again in the public mem.h header, and there is no need to include internal.h.
618 lines
16 KiB
C
618 lines
16 KiB
C
// #define NEWBUFFERING
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//#define DEBUG_RESYNC
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/* 1 frame = 4608 byte PCM */
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#define LOCAL static inline
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//#undef LOCAL
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//#define LOCAL
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#define real float
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// #define int long
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#include "mpg123.h"
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#include "huffman.h"
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#include "mp3.h"
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#include "mpbswap.h"
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#include "cpudetect.h"
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//#include "liba52/mm_accel.h"
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#include "mp_msg.h"
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#include "libvo/fastmemcpy.h"
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#include "libavutil/common.h"
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#if ARCH_X86_64
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// 3DNow! and 3DNow!Ext routines don't compile under AMD64
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#undef HAVE_AMD3DNOW
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#undef HAVE_AMD3DNOWEXT
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#define HAVE_AMD3DNOW 0
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#define HAVE_AMD3DNOWEXT 0
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#endif
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//static FILE* mp3_file=NULL;
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int MP3_frames=0;
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int MP3_eof=0;
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int MP3_pause=0;
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int MP3_filesize=0;
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int MP3_fpos=0; // current file position
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int MP3_framesize=0; // current framesize
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int MP3_bitrate=0; // current bitrate
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int MP3_samplerate=0; // current samplerate
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int MP3_resync=0;
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int MP3_channels=0;
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int MP3_bps=2;
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static long outscale = 32768;
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#include "tabinit.c"
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#if 1
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int mplayer_audio_read(char *buf,int size);
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LOCAL int mp3_read(char *buf,int size){
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// int len=fread(buf,1,size,mp3_file);
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int len=mplayer_audio_read(buf,size);
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if(len>0) MP3_fpos+=len;
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// if(len!=size) MP3_eof=1;
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return len;
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}
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#else
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int mp3_read(char *buf,int size);
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#endif
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/*
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* Modified for use with MPlayer, for details see the changelog at
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* http://svn.mplayerhq.hu/mplayer/trunk/
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* $Id$
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*/
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//void mp3_seek(int pos){
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// fseek(mp3_file,pos,SEEK_SET);
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// return (MP3_fpos=ftell(mp3_file));
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//}
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/* Frame reader */
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#define MAXFRAMESIZE 1280
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#define MAXFRAMESIZE2 (512+MAXFRAMESIZE)
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static int fsizeold=0,ssize=0;
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static unsigned char bsspace[2][MAXFRAMESIZE2]; /* !!!!! */
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static unsigned char *bsbufold=bsspace[0]+512;
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static unsigned char *bsbuf=bsspace[1]+512;
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static int bsnum=0;
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static int bitindex;
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static unsigned char *wordpointer;
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static int bitsleft;
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static unsigned char *pcm_sample; /* outbuffer address */
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static int pcm_point = 0; /* outbuffer offset */
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static struct frame fr;
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static int tabsel_123[2][3][16] = {
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{ {0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,},
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{0,32,48,56, 64, 80, 96,112,128,160,192,224,256,320,384,},
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{0,32,40,48, 56, 64, 80, 96,112,128,160,192,224,256,320,} },
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{ {0,32,48,56,64,80,96,112,128,144,160,176,192,224,256,},
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{0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,},
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{0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,} }
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};
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static int freqs[9] = { 44100, 48000, 32000, 22050, 24000, 16000 , 11025 , 12000 , 8000 };
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LOCAL unsigned int getbits(short number_of_bits)
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{
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unsigned rval;
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// if(MP3_frames>=7741) printf("getbits: bits=%d bitsleft=%d wordptr=%x\n",number_of_bits,bitsleft,wordpointer);
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if((bitsleft-=number_of_bits)<0) return 0;
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if(!number_of_bits) return 0;
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rval = wordpointer[0];
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rval <<= 8;
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rval |= wordpointer[1];
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rval <<= 8;
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rval |= wordpointer[2];
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rval <<= bitindex;
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rval &= 0xffffff;
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bitindex += number_of_bits;
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rval >>= (24-number_of_bits);
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wordpointer += (bitindex>>3);
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bitindex &= 7;
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return rval;
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}
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LOCAL unsigned int getbits_fast(short number_of_bits)
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{
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unsigned rval;
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// if(MP3_frames>=7741) printf("getbits_fast: bits=%d bitsleft=%d wordptr=%x\n",number_of_bits,bitsleft,wordpointer);
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if((bitsleft-=number_of_bits)<0) return 0;
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if(!number_of_bits) return 0;
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#if ARCH_X86
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rval = bswap_16(*((uint16_t *)wordpointer));
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#else
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/*
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* we may not be able to address unaligned 16-bit data on non-x86 cpus.
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* Fall back to some portable code.
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*/
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rval = wordpointer[0] << 8 | wordpointer[1];
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#endif
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rval <<= bitindex;
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rval &= 0xffff;
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bitindex += number_of_bits;
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rval >>= (16-number_of_bits);
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wordpointer += (bitindex>>3);
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bitindex &= 7;
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return rval;
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}
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LOCAL unsigned int get1bit(void)
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{
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unsigned char rval;
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// if(MP3_frames>=7741) printf("get1bit: bitsleft=%d wordptr=%x\n",bitsleft,wordpointer);
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if((--bitsleft)<0) return 0;
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rval = *wordpointer << bitindex;
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bitindex++;
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wordpointer += (bitindex>>3);
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bitindex &= 7;
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return ((rval>>7)&1);
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}
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LOCAL void set_pointer(int backstep)
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{
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// if(backstep!=512 && backstep>fsizeold)
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// printf("\rWarning! backstep (%d>%d) \n",backstep,fsizeold);
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wordpointer = bsbuf + ssize - backstep;
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if (backstep) fast_memcpy(wordpointer,bsbufold+fsizeold-backstep,backstep);
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bitindex = 0;
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bitsleft+=8*backstep;
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// printf("Backstep %d (bitsleft=%d)\n",backstep,bitsleft);
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}
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LOCAL int stream_head_read(unsigned char *hbuf,uint32_t *newhead){
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if(mp3_read(hbuf,4) != 4) return FALSE;
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#if ARCH_X86
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*newhead = bswap_32(*((uint32_t*)hbuf));
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#else
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/*
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* we may not be able to address unaligned 32-bit data on non-x86 cpus.
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* Fall back to some portable code.
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*/
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*newhead =
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hbuf[0] << 24 |
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hbuf[1] << 16 |
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hbuf[2] << 8 |
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hbuf[3];
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#endif
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return TRUE;
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}
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LOCAL int stream_head_shift(unsigned char *hbuf,uint32_t *head){
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*((uint32_t*)hbuf) >>= 8;
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if(mp3_read(hbuf+3,1) != 1) return 0;
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*head <<= 8;
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*head |= hbuf[3];
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return 1;
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}
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/*
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* decode a header and write the information
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* into the frame structure
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*/
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LOCAL int decode_header(struct frame *fr,uint32_t newhead){
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// head_check:
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if( (newhead & 0xffe00000) != 0xffe00000 ||
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(newhead & 0x0000fc00) == 0x0000fc00) return FALSE;
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fr->lay = 4-((newhead>>17)&3);
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// if(fr->lay!=3) return FALSE;
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if( newhead & (1<<20) ) {
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fr->lsf = (newhead & (1<<19)) ? 0x0 : 0x1;
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fr->mpeg25 = 0;
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} else {
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fr->lsf = 1;
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fr->mpeg25 = 1;
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}
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if(fr->mpeg25)
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fr->sampling_frequency = 6 + ((newhead>>10)&0x3);
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else
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fr->sampling_frequency = ((newhead>>10)&0x3) + (fr->lsf*3);
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if(fr->sampling_frequency>8) return FALSE; // valid: 0..8
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fr->error_protection = ((newhead>>16)&0x1)^0x1;
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fr->bitrate_index = ((newhead>>12)&0xf);
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fr->padding = ((newhead>>9)&0x1);
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fr->extension = ((newhead>>8)&0x1);
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fr->mode = ((newhead>>6)&0x3);
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fr->mode_ext = ((newhead>>4)&0x3);
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fr->copyright = ((newhead>>3)&0x1);
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fr->original = ((newhead>>2)&0x1);
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fr->emphasis = newhead & 0x3;
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MP3_channels = fr->stereo = (fr->mode == MPG_MD_MONO) ? 1 : 2;
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if(!fr->bitrate_index){
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// fprintf(stderr,"Free format not supported.\n");
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return FALSE;
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}
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switch(fr->lay){
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case 2:
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MP3_bitrate=tabsel_123[fr->lsf][1][fr->bitrate_index];
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MP3_samplerate=freqs[fr->sampling_frequency];
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fr->framesize = MP3_bitrate * 144000;
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fr->framesize /= MP3_samplerate;
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MP3_framesize=fr->framesize;
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fr->framesize += fr->padding - 4;
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break;
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case 3:
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if(fr->lsf)
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ssize = (fr->stereo == 1) ? 9 : 17;
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else
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ssize = (fr->stereo == 1) ? 17 : 32;
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if(fr->error_protection) ssize += 2;
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MP3_bitrate=tabsel_123[fr->lsf][2][fr->bitrate_index];
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MP3_samplerate=freqs[fr->sampling_frequency];
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fr->framesize = MP3_bitrate * 144000;
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fr->framesize /= MP3_samplerate<<(fr->lsf);
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MP3_framesize=fr->framesize;
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fr->framesize += fr->padding - 4;
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break;
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case 1:
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// fr->jsbound = (fr->mode == MPG_MD_JOINT_STEREO) ? (fr->mode_ext<<2)+4 : 32;
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MP3_bitrate=tabsel_123[fr->lsf][0][fr->bitrate_index];
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MP3_samplerate=freqs[fr->sampling_frequency];
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fr->framesize = MP3_bitrate * 12000;
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fr->framesize /= MP3_samplerate;
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MP3_framesize = ((fr->framesize+fr->padding)<<2);
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fr->framesize = MP3_framesize-4;
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// printf("framesize=%d\n",fr->framesize);
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break;
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default:
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MP3_framesize=fr->framesize=0;
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// fprintf(stderr,"Sorry, unsupported layer type.\n");
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return 0;
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}
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if(fr->framesize<=0 || fr->framesize>MAXFRAMESIZE) return FALSE;
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return 1;
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}
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LOCAL int stream_read_frame_body(int size){
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/* flip/init buffer for Layer 3 */
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bsbufold = bsbuf;
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bsbuf = bsspace[bsnum]+512;
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bsnum = (bsnum + 1) & 1;
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if( mp3_read(bsbuf,size) != size) return 0; // broken frame
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bitindex = 0;
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wordpointer = (unsigned char *) bsbuf;
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bitsleft=8*size;
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return 1;
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}
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/*****************************************************************
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* read next frame return number of frames read.
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*/
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LOCAL int read_frame(struct frame *fr){
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uint32_t newhead;
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union {
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unsigned char buf[8];
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unsigned long dummy; // for alignment
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} hbuf;
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int skipped,resyncpos;
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int frames=0;
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resync:
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skipped=MP3_fpos;
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resyncpos=MP3_fpos;
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set_pointer(512);
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fsizeold=fr->framesize; /* for Layer3 */
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if(!stream_head_read(hbuf.buf,&newhead)) return 0;
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if(!decode_header(fr,newhead)){
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// invalid header! try to resync stream!
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#ifdef DEBUG_RESYNC
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printf("ReSync: searching for a valid header... (pos=%X)\n",MP3_fpos);
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#endif
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retry1:
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while(!decode_header(fr,newhead)){
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if(!stream_head_shift(hbuf.buf,&newhead)) return 0;
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}
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resyncpos=MP3_fpos-4;
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// found valid header
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#ifdef DEBUG_RESYNC
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printf("ReSync: found valid hdr at %X fsize=%ld ",resyncpos,fr->framesize);
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#endif
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if(!stream_read_frame_body(fr->framesize)) return 0; // read body
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set_pointer(512);
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fsizeold=fr->framesize; /* for Layer3 */
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if(!stream_head_read(hbuf.buf,&newhead)) return 0;
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if(!decode_header(fr,newhead)){
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// invalid hdr! go back...
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#ifdef DEBUG_RESYNC
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printf("INVALID\n");
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#endif
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// mp3_seek(resyncpos+1);
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if(!stream_head_read(hbuf.buf,&newhead)) return 0;
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goto retry1;
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}
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#ifdef DEBUG_RESYNC
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printf("OK!\n");
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++frames;
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#endif
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}
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skipped=resyncpos-skipped;
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// if(skipped && !MP3_resync) printf("\r%d bad bytes skipped (resync at 0x%X) \n",skipped,resyncpos);
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// printf("%8X [%08X] %d %d (%d)%s%s\n",MP3_fpos-4,newhead,fr->framesize,fr->mode,fr->mode_ext,fr->error_protection?" CRC":"",fr->padding?" PAD":"");
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/* read main data into memory */
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if(!stream_read_frame_body(fr->framesize)){
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printf("\nBroken frame at 0x%X \n",resyncpos);
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return 0;
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}
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++frames;
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if(MP3_resync){
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MP3_resync=0;
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if(frames==1) goto resync;
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}
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return frames;
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}
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static int _has_mmx = 0; // used by layer2.c, layer3.c to pre-scale coeffs
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/******************************************************************************/
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/* PUBLIC FUNCTIONS */
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/******************************************************************************/
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/* It's hidden from gcc in assembler */
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void dct64_MMX(short *, short *, real *);
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void dct64_MMX_3dnow(short *, short *, real *);
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void dct64_MMX_3dnowex(short *, short *, real *);
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void dct64_sse(short *, short *, real *);
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void dct64_altivec(real *, real *, real *);
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void (*dct64_MMX_func)(short *, short *, real *);
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#include "layer2.c"
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#include "layer3.c"
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#include "layer1.c"
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#include "cpudetect.h"
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// Init decoder tables. Call first, once!
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#ifdef CONFIG_FAKE_MONO
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void MP3_Init(int fakemono){
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#else
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void MP3_Init(void){
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#endif
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//gCpuCaps.hasMMX=gCpuCaps.hasMMX2=gCpuCaps.hasSSE=0; // for testing!
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_has_mmx = 0;
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dct36_func = dct36;
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make_decode_tables(outscale);
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#if HAVE_MMX
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if (gCpuCaps.hasMMX)
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{
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_has_mmx = 1;
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synth_func = synth_1to1_MMX;
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}
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#endif
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#if HAVE_AMD3DNOWEXT
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if (gCpuCaps.has3DNowExt)
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{
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dct36_func=dct36_3dnowex;
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dct64_MMX_func= dct64_MMX_3dnowex;
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mp_msg(MSGT_DECAUDIO,MSGL_V,"mp3lib: using 3DNow!Ex optimized decore!\n");
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}
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else
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#endif
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#if HAVE_AMD3DNOW
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if (gCpuCaps.has3DNow)
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{
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dct36_func = dct36_3dnow;
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dct64_MMX_func = dct64_MMX_3dnow;
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mp_msg(MSGT_DECAUDIO,MSGL_V,"mp3lib: using 3DNow! optimized decore!\n");
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}
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else
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#endif
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#if HAVE_SSE
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if (gCpuCaps.hasSSE)
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{
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dct64_MMX_func = dct64_sse;
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mp_msg(MSGT_DECAUDIO,MSGL_V,"mp3lib: using SSE optimized decore!\n");
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}
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else
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#endif
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#if ARCH_X86_32
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#if HAVE_MMX
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if (gCpuCaps.hasMMX)
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{
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dct64_MMX_func = dct64_MMX;
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mp_msg(MSGT_DECAUDIO,MSGL_V,"mp3lib: using MMX optimized decore!\n");
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}
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else
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#endif
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if (gCpuCaps.cpuType >= CPUTYPE_I586)
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{
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synth_func = synth_1to1_pent;
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mp_msg(MSGT_DECAUDIO,MSGL_V,"mp3lib: using Pentium optimized decore!\n");
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}
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else
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#endif /* ARCH_X86_32 */
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#if HAVE_ALTIVEC
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if (gCpuCaps.hasAltiVec)
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{
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mp_msg(MSGT_DECAUDIO,MSGL_V,"mp3lib: using AltiVec optimized decore!\n");
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}
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else
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#endif
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{
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synth_func = NULL; /* use default c version */
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mp_msg(MSGT_DECAUDIO,MSGL_V,"mp3lib: using generic C decore!\n");
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}
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#ifdef CONFIG_FAKE_MONO
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if (fakemono == 1)
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fr.synth=synth_1to1_l;
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else if (fakemono == 2)
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fr.synth=synth_1to1_r;
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else
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fr.synth=synth_1to1;
|
|
#else
|
|
fr.synth=synth_1to1;
|
|
#endif
|
|
fr.synth_mono=synth_1to1_mono2stereo;
|
|
fr.down_sample=0;
|
|
fr.down_sample_sblimit = SBLIMIT>>(fr.down_sample);
|
|
|
|
init_layer2();
|
|
init_layer3(fr.down_sample_sblimit);
|
|
mp_msg(MSGT_DECAUDIO,MSGL_V,"MP3lib: init layer2&3 finished, tables done\n");
|
|
}
|
|
|
|
#if 0
|
|
|
|
void MP3_Close(void){
|
|
MP3_eof=1;
|
|
if(mp3_file) fclose(mp3_file);
|
|
mp3_file=NULL;
|
|
}
|
|
|
|
// Open a file, init buffers. Call once per file!
|
|
int MP3_Open(char *filename,int buffsize){
|
|
MP3_eof=1; // lock decoding
|
|
MP3_pause=1; // lock playing
|
|
if(mp3_file) MP3_Close(); // close prev. file
|
|
MP3_frames=0;
|
|
|
|
mp3_file=fopen(filename,"rb");
|
|
// printf("MP3_Open: file='%s'",filename);
|
|
// if(!mp3_file){ printf(" not found!\n"); return 0;} else printf("Ok!\n");
|
|
if(!mp3_file) return 0;
|
|
|
|
MP3_filesize=MP3_PrintTAG();
|
|
fseek(mp3_file,0,SEEK_SET);
|
|
|
|
MP3_InitBuffers(buffsize);
|
|
if(!tables_done_flag) MP3_Init();
|
|
MP3_eof=0; // allow decoding
|
|
MP3_pause=0; // allow playing
|
|
return MP3_filesize;
|
|
}
|
|
|
|
#endif
|
|
|
|
// Read & decode a single frame. Called by sound driver.
|
|
int MP3_DecodeFrame(unsigned char *hova,short single){
|
|
pcm_sample = hova;
|
|
pcm_point = 0;
|
|
if(!read_frame(&fr))return(0);
|
|
if(single==-2){ set_pointer(512); return(1); }
|
|
if(fr.error_protection) getbits(16); /* skip crc */
|
|
fr.single=single;
|
|
switch(fr.lay){
|
|
case 2: do_layer2(&fr,single);break;
|
|
case 3: do_layer3(&fr,single);break;
|
|
case 1: do_layer1(&fr,single);break;
|
|
default:
|
|
return 0; // unsupported
|
|
}
|
|
// ++MP3_frames;
|
|
return(pcm_point?pcm_point:2);
|
|
}
|
|
|
|
// Prints last frame header in ascii.
|
|
void MP3_PrintHeader(void){
|
|
static char *modes[4] = { "Stereo", "Joint-Stereo", "Dual-Channel", "Single-Channel" };
|
|
static char *layers[4] = { "???" , "I", "II", "III" };
|
|
|
|
mp_msg(MSGT_DECAUDIO,MSGL_V,"\rMPEG %s, Layer %s, %d Hz %d kbit %s, BPF: %d\n",
|
|
fr.mpeg25 ? "2.5" : (fr.lsf ? "2.0" : "1.0"),
|
|
layers[fr.lay],freqs[fr.sampling_frequency],
|
|
tabsel_123[fr.lsf][fr.lay-1][fr.bitrate_index],
|
|
modes[fr.mode],fr.framesize+4);
|
|
mp_msg(MSGT_DECAUDIO,MSGL_V,"Channels: %d, copyright: %s, original: %s, CRC: %s, emphasis: %d\n",
|
|
fr.stereo,fr.copyright?"Yes":"No",
|
|
fr.original?"Yes":"No",fr.error_protection?"Yes":"No",
|
|
fr.emphasis);
|
|
}
|
|
|
|
#if 0
|
|
#include "genre.h"
|
|
|
|
// Read & print ID3 TAG. Do not call when playing!!! returns filesize.
|
|
int MP3_PrintTAG(void){
|
|
struct id3tag {
|
|
char tag[3];
|
|
char title[30];
|
|
char artist[30];
|
|
char album[30];
|
|
char year[4];
|
|
char comment[30];
|
|
unsigned char genre;
|
|
};
|
|
struct id3tag tag;
|
|
char title[31]={0,};
|
|
char artist[31]={0,};
|
|
char album[31]={0,};
|
|
char year[5]={0,};
|
|
char comment[31]={0,};
|
|
char genre[31]={0,};
|
|
int fsize;
|
|
int ret;
|
|
|
|
fseek(mp3_file,0,SEEK_END);
|
|
fsize=ftell(mp3_file);
|
|
if(fseek(mp3_file,-128,SEEK_END)) return fsize;
|
|
ret=fread(&tag,128,1,mp3_file);
|
|
if(ret!=1 || tag.tag[0]!='T' || tag.tag[1]!='A' || tag.tag[2]!='G') return fsize;
|
|
|
|
strncpy(title,tag.title,30);
|
|
strncpy(artist,tag.artist,30);
|
|
strncpy(album,tag.album,30);
|
|
strncpy(year,tag.year,4);
|
|
strncpy(comment,tag.comment,30);
|
|
|
|
if ( tag.genre <= sizeof(genre_table)/sizeof(*genre_table) ) {
|
|
strncpy(genre, genre_table[tag.genre], 30);
|
|
} else {
|
|
strncpy(genre,"Unknown",30);
|
|
}
|
|
|
|
// printf("\n");
|
|
printf("Title : %30s Artist: %s\n",title,artist);
|
|
printf("Album : %30s Year : %4s\n",album,year);
|
|
printf("Comment: %30s Genre : %s\n",comment,genre);
|
|
printf("\n");
|
|
return fsize-128;
|
|
}
|
|
|
|
#endif
|