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#define DUMP_PCM
// gcc test.c -I.. -L. -lMP3 -lm -o test1 -O4
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/time.h>
#include "mp3lib/mp3.h"
#include "config.h"
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); }
// 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);
}
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