mpv/mp3lib/test2.c

/*
 * This file is part of MPlayer.
 *
 * MPlayer 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.
 *
 * MPlayer 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.
 *
 * You should have received a copy of the GNU General Public License along
 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <fcntl.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <sys/soundcard.h>

#include "config.h"
#include "mp3lib/mp3.h"
#include "cpudetect.h"

static FILE* mp3file=NULL;

int mplayer_audio_read(char *buf,int size){
    return fread(buf,1,size,mp3file);
}

#define BUFFLEN 4608
static unsigned char buffer[BUFFLEN];


int main(int argc,char* argv[]){
  int len;
  int total=0;
  int r;
  int audio_fd;

  mp3file=fopen((argc>1)?argv[1]:"test.mp3","rb");
  if(!mp3file){  printf("file not found\n");  exit(1); }

  GetCpuCaps(&gCpuCaps);

  // MPEG Audio:
#ifdef CONFIG_FAKE_MONO
  MP3_Init(0);
#else
  MP3_Init();
#endif
  MP3_samplerate=MP3_channels=0;
  len=MP3_DecodeFrame(buffer,-1);

  audio_fd=open("/dev/dsp", O_WRONLY);
  if(audio_fd<0){  printf("Can't open audio device\n");exit(1); }
  r=AFMT_S16_LE;ioctl (audio_fd, SNDCTL_DSP_SETFMT, &r);
  r=MP3_channels-1;ioctl (audio_fd, SNDCTL_DSP_STEREO, &r);
  r=MP3_samplerate;ioctl (audio_fd, SNDCTL_DSP_SPEED, &r);
  printf("audio_setup: using %d Hz samplerate (requested: %d)\n",r,MP3_samplerate);

  while(1){
      int len2;
      if(len==0) len=MP3_DecodeFrame(buffer,-1);
      if(len<=0) break; // EOF

      // play it
      len2=write(audio_fd,buffer,len);
      if(len2<0) break; // ERROR?
      len-=len2; total+=len2;
      if(len>0){
          // this shouldn't happen...
          memcpy(buffer,buffer+len2,len);
          putchar('!');fflush(stdout);
      }
  }

  fclose(mp3file);
  return 0;
}