mp3lib/test.c

   1
   2 #define DUMP_PCM
   3
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6
   7 #include <unistd.h>
   8 #include <sys/time.h>
   9
  10 #include "config.h"
  11 #include "mp3lib/mp3.h"
  12 #include "cpudetect.h"
  13
  14 static inline unsigned int GetTimer(){
  15   struct timeval tv;
  16   struct timezone tz;
  17 //  float s;
  18   gettimeofday(&tv,&tz);
  19 //  s=tv.tv_usec;s*=0.000001;s+=tv.tv_sec;
  20   return (tv.tv_sec*1000000+tv.tv_usec);
  21 }
  22
  23 static FILE* mp3file=NULL;
  24
  25 int mplayer_audio_read(char *buf,int size){
  26     return fread(buf,1,size,mp3file);
  27 }
  28
  29 #define BUFFLEN 4608
  30 static unsigned char buffer[BUFFLEN];
  31
  32 int main(int argc,char* argv[]){
  33   int len;
  34   int total=0;
  35   unsigned int time1;
  36   float length;
  37 #ifdef DUMP_PCM
  38   FILE *f=NULL;
  39   f=fopen("test.pcm","wb");
  40 #endif
  41
  42   mp3file=fopen((argc>1)?argv[1]:"test.mp3","rb");
  43   if(!mp3file){  printf("file not found\n");  exit(1); }
  44
  45   GetCpuCaps(&gCpuCaps);
  46
  47   // MPEG Audio:
  48 #ifdef USE_FAKE_MONO
  49   MP3_Init(0);
  50 #else
  51   MP3_Init();
  52 #endif
  53   MP3_samplerate=MP3_channels=0;
  54
  55   time1=GetTimer();
  56   while((len=MP3_DecodeFrame(buffer,-1))>0 && total<2000000){
  57       total+=len;
  58       // play it
  59 #ifdef DUMP_PCM
  60       fwrite(buffer,len,1,f);
  61 #endif
  62       //putchar('.');fflush(stdout);
  63   }
  64   time1=GetTimer()-time1;
  65   length=(float)total/(float)(MP3_samplerate*MP3_channels*2);
  66   printf("\nDecoding time: %8.6f\n",(float)time1*0.000001f);
  67   printf("Uncompressed size: %d bytes  (%8.3f secs)\n",total,length);
  68   printf("CPU usage at normal playback: %5.2f %%\n",time1*0.0001f/length);
  69
  70   fclose(mp3file);
  71   return 0;
  72 }