mp3lib/test2.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4
   5 #include <fcntl.h>
   6 #include <sys/ioctl.h>
   7 #include <unistd.h>
   8 #include <sys/soundcard.h>
   9
  10 #include "config.h"
  11 #include "mp3lib/mp3.h"
  12 #include "cpudetect.h"
  13
  14 static FILE* mp3file=NULL;
  15
  16 int mplayer_audio_read(char *buf,int size){
  17     return fread(buf,1,size,mp3file);
  18 }
  19
  20 #define BUFFLEN 4608
  21 static unsigned char buffer[BUFFLEN];
  22
  23
  24 int main(int argc,char* argv[]){
  25   int len;
  26   int total=0;
  27   int r;
  28   int audio_fd;
  29
  30   mp3file=fopen((argc>1)?argv[1]:"test.mp3","rb");
  31   if(!mp3file){  printf("file not found\n");  exit(1); }
  32
  33   GetCpuCaps(&gCpuCaps);
  34
  35   // MPEG Audio:
  36 #ifdef CONFIG_FAKE_MONO
  37   MP3_Init(0);
  38 #else
  39   MP3_Init();
  40 #endif
  41   MP3_samplerate=MP3_channels=0;
  42   len=MP3_DecodeFrame(buffer,-1);
  43
  44   audio_fd=open("/dev/dsp", O_WRONLY);
  45   if(audio_fd<0){  printf("Can't open audio device\n");exit(1); }
  46   r=AFMT_S16_LE;ioctl (audio_fd, SNDCTL_DSP_SETFMT, &r);
  47   r=MP3_channels-1;ioctl (audio_fd, SNDCTL_DSP_STEREO, &r);
  48   r=MP3_samplerate;ioctl (audio_fd, SNDCTL_DSP_SPEED, &r);
  49   printf("audio_setup: using %d Hz samplerate (requested: %d)\n",r,MP3_samplerate);
  50
  51   while(1){
  52       int len2;
  53       if(len==0) len=MP3_DecodeFrame(buffer,-1);
  54       if(len<=0) break; // EOF
  55
  56       // play it
  57       len2=write(audio_fd,buffer,len);
  58       if(len2<0) break; // ERROR?
  59       len-=len2; total+=len2;
  60       if(len>0){
  61           // this shouldn't happen...
  62           memcpy(buffer,buffer+len2,len);
  63           putchar('!');fflush(stdout);
  64       }
  65   }
  66
  67   fclose(mp3file);
  68   return 0;
  69 }