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