mp3lib/test2.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22
  23 #include <fcntl.h>
  24 #include <sys/ioctl.h>
  25 #include <unistd.h>
  26 #include <sys/soundcard.h>
  27
  28 #include "config.h"
  29 #include "mp3lib/mp3.h"
  30 #include "cpudetect.h"
  31
  32 static FILE* mp3file=NULL;
  33
  34 int mplayer_audio_read(char *buf,int size){
  35     return fread(buf,1,size,mp3file);
  36 }
  37
  38 #define BUFFLEN 4608
  39 static unsigned char buffer[BUFFLEN];
  40
  41
  42 int main(int argc,char* argv[]){
  43   int len;
  44   int total=0;
  45   int r;
  46   int audio_fd;
  47
  48   mp3file=fopen((argc>1)?argv[1]:"test.mp3","rb");
  49   if(!mp3file){  printf("file not found\n");  exit(1); }
  50
  51   GetCpuCaps(&gCpuCaps);
  52
  53   // MPEG Audio:
  54 #ifdef CONFIG_FAKE_MONO
  55   MP3_Init(0);
  56 #else
  57   MP3_Init();
  58 #endif
  59   MP3_samplerate=MP3_channels=0;
  60   len=MP3_DecodeFrame(buffer,-1);
  61
  62   audio_fd=open("/dev/dsp", O_WRONLY);
  63   if(audio_fd<0){  printf("Can't open audio device\n");exit(1); }
  64   r=AFMT_S16_LE;ioctl (audio_fd, SNDCTL_DSP_SETFMT, &r);
  65   r=MP3_channels-1;ioctl (audio_fd, SNDCTL_DSP_STEREO, &r);
  66   r=MP3_samplerate;ioctl (audio_fd, SNDCTL_DSP_SPEED, &r);
  67   printf("audio_setup: using %d Hz samplerate (requested: %d)\n",r,MP3_samplerate);
  68
  69   while(1){
  70       int len2;
  71       if(len==0) len=MP3_DecodeFrame(buffer,-1);
  72       if(len<=0) break; // EOF
  73
  74       // play it
  75       len2=write(audio_fd,buffer,len);
  76       if(len2<0) break; // ERROR?
  77       len-=len2; total+=len2;
  78       if(len>0){
  79           // this shouldn't happen...
  80           memcpy(buffer,buffer+len2,len);
  81           putchar('!');fflush(stdout);
  82       }
  83   }
  84
  85   fclose(mp3file);
  86   return 0;
  87 }