#define DUMP_PCM // gcc test.c -I.. -L. -lMP3 -lm -o test1 -O4 #include #include #include #include #include "mp3lib/mp3.h" #include "config.h" #include "cpudetect.h" extern CpuCaps gCpuCaps; static inline unsigned int GetTimer(){ struct timeval tv; struct timezone tz; // float s; gettimeofday(&tv,&tz); // s=tv.tv_usec;s*=0.000001;s+=tv.tv_sec; return (tv.tv_sec*1000000+tv.tv_usec); } 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; 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 USE_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); }