static int control(sh_audio_t *sh,int cmd,void* arg, ...)
{
switch(cmd)
{
case ADCTRL_RESYNC_STREAM:
MP3_DecodeFrame(NULL,-2); // resync
MP3_DecodeFrame(NULL,-2); // resync
MP3_DecodeFrame(NULL,-2); // resync
return CONTROL_TRUE;
case ADCTRL_SKIP_FRAME:
MP3_DecodeFrame(NULL,-2); // skip MPEG frame
return CONTROL_TRUE;
}
return CONTROL_UNKNOWN;
}
int main(int argc,char* argv[]){
int len;
int total=0;
float length;
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 USE_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);
}
static int init(sh_audio_t *sh)
{
// MPEG Audio:
dec_audio_sh=sh; // save sh_audio for the callback:
// MP3_Init(fakemono,mplayer_accel,&mplayer_audio_read); // TODO!!!
#ifdef USE_FAKE_MONO
MP3_Init(fakemono);
#else
MP3_Init();
#endif
MP3_samplerate=MP3_channels=0;
sh->a_buffer_len=MP3_DecodeFrame(sh->a_buffer,-1);
if(!sh->a_buffer_len) return 0; // unsupported layer/format
sh->channels=2; // hack
sh->samplesize=2;
sh->samplerate=MP3_samplerate;
sh->i_bps=MP3_bitrate*(1000/8);
MP3_PrintHeader();
return 1;
}
int main(int argc,char* argv[]){
int len;
int total=0;
unsigned int time1;
float length;
#ifdef DUMP_PCM
FILE *f=NULL;
f=fopen("test.pcm","wb");
#endif
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;
time1=GetTimer();
while((len=MP3_DecodeFrame(buffer,-1))>0 && total<2000000){
total+=len;
// play it
#ifdef DUMP_PCM
fwrite(buffer,len,1,f);
#endif
//putchar('.');fflush(stdout);
}
time1=GetTimer()-time1;
length=(float)total/(float)(MP3_samplerate*MP3_channels*2);
printf("\nDecoding time: %8.6f\n",(float)time1*0.000001f);
printf("Uncompressed size: %d bytes (%8.3f secs)\n",total,length);
printf("CPU usage at normal playback: %5.2f %%\n",time1*0.0001f/length);
fclose(mp3file);
return 0;
}
static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
{
return MP3_DecodeFrame(buf,-1);
}
