21 lines
895 B
C
21 lines
895 B
C
#define DR_MP3_IMPLEMENTATION
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#include "dr_mp3.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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static double now(){ struct timespec ts; clock_gettime(CLOCK_MONOTONIC,&ts); return ts.tv_sec+ts.tv_nsec*1e-9; }
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int main(int argc,char**argv){
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if(argc<2){fprintf(stderr,"usage: %s file.mp3\n",argv[0]);return 1;}
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drmp3 d; if(!drmp3_init_file(&d,argv[1],NULL)){fprintf(stderr,"open fail\n");return 1;}
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printf("rate=%d ch=%d\n",d.sampleRate,d.channels);
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float *pcm=malloc(2048*2*sizeof(float));
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double t0=now(); long long frames=0; drmp3_uint64 n;
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while((n=drmp3_read_pcm_frames_f32(&d,2048,pcm))!=0){ frames+=n; }
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double t1=now();
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printf("total_pcm_frames=%lld\n",frames);
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printf("wall=%.3f s throughput=%.1f xRT (%.1f frames/s)\n",(t1-t0),
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(double)frames/d.sampleRate/(t1-t0),(double)frames/(t1-t0));
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drmp3_uninit(&d); free(pcm); return 0;
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}
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