mirror of
https://github.com/mpv-player/mpv
synced 2024-12-15 19:35:49 +00:00
e7db4ccf1a
patch replaces '()' for the correct '(void)' in function declarations/prototypes which have no parameters. The '()' syntax tell thats there is a variable list of arguments, so that the compiler cannot check this. The extra CFLAG '-Wstrict-declarations' shows those cases. Comments about a similar patch applied to ffmpeg: That in C++ these mean the same, but in ANSI C the semantics are different; function() is an (obsolete) K&R C style forward declaration, it basically means that the function can have any number and any types of parameters, effectively completely preventing the compiler from doing any sort of type checking. -- Erik Slagter Defining functions with unspecified arguments is allowed but bad. With arguments unspecified the compiler can't report an error/warning if the function is called with incorrect arguments. -- Måns Rullgård git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@17567 b3059339-0415-0410-9bf9-f77b7e298cf2
77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
// Precise timer routines for LINUX (C) LGB & A'rpi/ASTRAL
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#include <unistd.h>
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#ifdef __BEOS__
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#define usleep(t) snooze(t)
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#endif
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#include <stdlib.h>
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#include <time.h>
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#include <sys/time.h>
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#include "config.h"
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const char *timer_name =
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#ifdef HAVE_NANOSLEEP
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"nanosleep()";
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#else
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"usleep()";
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#endif
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int usec_sleep(int usec_delay)
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{
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#ifdef HAVE_NANOSLEEP
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struct timespec ts;
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ts.tv_sec = usec_delay / 1000000;
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ts.tv_nsec = (usec_delay % 1000000) * 1000;
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return nanosleep(&ts, NULL);
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#else
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return usleep(usec_delay);
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#endif
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}
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// Returns current time in microseconds
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unsigned int GetTimer(void){
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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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// Returns current time in milliseconds
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unsigned int GetTimerMS(void){
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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*1000+tv.tv_usec/1000);
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}
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static unsigned int RelativeTime=0;
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// Returns time spent between now and last call in seconds
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float GetRelativeTime(void){
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unsigned int t,r;
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t=GetTimer();
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// t*=16;printf("time=%ud\n",t);
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r=t-RelativeTime;
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RelativeTime=t;
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return (float)r * 0.000001F;
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}
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// Initialize timer, must be called at least once at start
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void InitTimer(void){
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GetRelativeTime();
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}
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#if 0
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void main(){
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float t=0;
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InitTimer();
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while(1){ t+=GetRelativeTime();printf("time= %10.6f\r",t);fflush(stdout); }
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}
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#endif
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