mirror of https://github.com/mpv-player/mpv
77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
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#define DUMP_PCM
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// gcc test.c -I.. -L. -lMP3 -lm -o test1 -O4
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/time.h>
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#include "mp3lib/mp3.h"
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#include "config.h"
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#include "cpudetect.h"
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extern CpuCaps gCpuCaps;
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static inline unsigned int GetTimer(){
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struct timeval tv;
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struct timezone tz;
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// float s;
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gettimeofday(&tv,&tz);
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// s=tv.tv_usec;s*=0.000001;s+=tv.tv_sec;
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return (tv.tv_sec*1000000+tv.tv_usec);
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}
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static FILE* mp3file=NULL;
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int mplayer_audio_read(char *buf,int size){
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return fread(buf,1,size,mp3file);
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}
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#define BUFFLEN 4608
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static unsigned char buffer[BUFFLEN];
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int main(int argc,char* argv[]){
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int len;
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int total=0;
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unsigned int time1;
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float length;
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#ifdef DUMP_PCM
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FILE *f=NULL;
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f=fopen("test.pcm","wb");
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#endif
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mp3file=fopen((argc>1)?argv[1]:"test.mp3","rb");
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if(!mp3file){ printf("file not found\n"); exit(1); }
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GetCpuCaps(&gCpuCaps);
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// MPEG Audio:
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#ifdef USE_FAKE_MONO
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MP3_Init(0);
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#else
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MP3_Init();
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#endif
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MP3_samplerate=MP3_channels=0;
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time1=GetTimer();
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while((len=MP3_DecodeFrame(buffer,-1))>0 && total<2000000){
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total+=len;
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// play it
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#ifdef DUMP_PCM
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fwrite(buffer,len,1,f);
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#endif
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//putchar('.');fflush(stdout);
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}
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time1=GetTimer()-time1;
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length=(float)total/(float)(MP3_samplerate*MP3_channels*2);
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printf("\nDecoding time: %8.6f\n",(float)time1*0.000001f);
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printf("Uncompressed size: %d bytes (%8.3f secs)\n",total,length);
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printf("CPU usage at normal playback: %5.2f %%\n",time1*0.0001f/length);
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fclose(mp3file);
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}
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