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win32.c
Package: chapter15.rar　[view]
Upload User: hjq518
Upload Date: 2021-12-09
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Code Size: 1k
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Audio program

Development Platform:

Visual C++

win32.c：Code Content
  2. /*!
  3.  *************************************************************************************
  4.  * file win32.c
  5.  *
  6.  * brief
  7.  *    Platform dependent code
  8.  *
  9.  * author
  10.  *    Main contributors (see contributors.h for copyright, address and affiliation details)
  11.  *      - Karsten Suehring                  <suehring@hhi.de>
  12.  *************************************************************************************
  13.  */
  15. #include "global.h"
  18. #ifdef _WIN32
  20. static LARGE_INTEGER freq;
  22. void gettime(TIME_T* time)
  23. {
  24.   QueryPerformanceCounter(time);
  25. }
  27. time_t timediff(TIME_T* start, TIME_T* end)
  28. {
  29.   static int first = 1;
  31.   if(first) 
  32.   {
  33.     QueryPerformanceFrequency(&freq);
  34.     first = 0;
  35.   }
  36.   return (time_t)((end->QuadPart - start->QuadPart)* 1000 /(freq.QuadPart));
  37. }
  39. #else
  41. static struct timezone tz;
  43. void gettime(TIME_T* time)
  44. {
  45.   gettimeofday(time, &tz);
  46. }
  48. time_t timediff(TIME_T* start, TIME_T* end)
  49. {
  50.   time_t t1, t2;
  52.   t1 =  start->tv_sec * 1000 + (start->tv_usec/1000);
  53.   t2 =  end->tv_sec  * 1000 + (end->tv_usec/1000);
  54.   return t2-t1;
  55. }
  56. #endif