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Replace sleep time calculation in main() with a separate function. 

Fixes some problems with playback_speed!=1: sleep limits which were
supposed to be real time were calculated in scaled time, timing
inaccuracies in nosound mode affected next frame by 
err*(1-1/playback_speed), auto quality code used scaled time.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@20915 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
uau 2006-11-14 09:29:03 +00:00
parent d1628d12f5
commit 173381f74d
1 changed files with 60 additions and 86 deletions
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146
mplayer.c
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@ -3002,6 +3002,63 @@ int fill_audio_out_buffers(void)
return 1;
}
int sleep_until_update(float *time_frame, float *aq_sleep_time)
{
current_module="calc_sleep_time";
int frame_time_remaining = 0;
*time_frame -= GetRelativeTime(); // reset timer
if (sh_audio && !d_audio->eof) {
float delay = audio_out->get_delay();
mp_dbg(MSGT_AVSYNC, MSGL_DBG2, "delay=%f\n", delay);
if (autosync) {
/*
* Adjust this raw delay value by calculating the expected
* delay for this frame and generating a new value which is
* weighted between the two. The higher autosync is, the
* closer to the delay value gets to that which "-nosound"
* would have used, and the longer it will take for A/V
* sync to settle at the right value (but it eventually will.)
* This settling time is very short for values below 100.
*/
float predicted = sh_audio->delay / playback_speed + *time_frame;
float difference = delay - predicted;
delay = predicted + difference / (float)autosync;
}
*time_frame = delay - sh_audio->delay / playback_speed;
// delay = amount of audio buffered in soundcard/driver
if (delay > 0.25) delay=0.25; else
if (delay < 0.10) delay=0.10;
if (*time_frame > delay*0.6) {
// sleep time too big - may cause audio drops (buffer underrun)
frame_time_remaining = 1;
*time_frame = delay*0.5;
}
} else {
// If we're lagging more than 200 ms behind the right playback rate,
// don't try to "catch up".
// If benchmark is set always output frames as fast as possible
// without sleeping.
if (*time_frame < -0.2 || benchmark)
*time_frame = 0;
}
*aq_sleep_time += *time_frame;
//============================== SLEEP: ===================================
// flag 256 means: libvo driver does its timing (dvb card)
if (*time_frame > 0.001 && !(vo_flags&256))
*time_frame = timing_sleep(*time_frame);
return frame_time_remaining;
}
int main(int argc,char* argv[]){
@ -4291,7 +4348,7 @@ if(!sh_video) {
if(in_size>max_framesize) max_framesize=in_size; // stats
sh_video->timer+=frame_time;
if(sh_audio) sh_audio->delay-=frame_time;
time_frame+=frame_time; // for nosound
time_frame += frame_time / playback_speed; // for nosound
// video_read_frame can change fps (e.g. for ASF video)
vo_fps = sh_video->fps;
// check for frame-drop:
@ -4335,7 +4392,7 @@ if(!sh_video) {
frame_time = sh_video->pts - last_pts;
last_pts = sh_video->pts;
sh_video->timer += frame_time;
time_frame += frame_time; // for nosound
time_frame += frame_time / playback_speed; // for nosound
if(sh_audio)
sh_audio->delay -= frame_time;
blit_frame = 1;
@ -4366,90 +4423,7 @@ if(!sh_video) {
current_module="vo_check_events";
if (vo_config_count) video_out->check_events();
current_module="calc_sleep_time";
#if 0
{ // debug frame dropping code
float delay=audio_out->get_delay();
mp_msg(MSGT_AVSYNC,MSGL_V,"\r[V] %5.3f [A] %5.3f => {%5.3f} (%5.3f) [%d] \n",
sh_video->timer,sh_audio->timer-delay,
sh_video->timer-(sh_audio->timer-delay),
delay,drop_frame);
}
#endif
if(drop_frame && !frame_time_remaining && !autosync){
/*
* Note: time_frame should not be forced to 0 in autosync mode.
* It is used as a cumulative counter to predict and correct the
* delay measurements from the audio driver. time_frame is already
* < 0, so the "time to sleep" code does not actually sleep. Also,
* blit_frame is already 0 because drop_frame was true when
* decode_video was called (which causes it to set blit_frame to 0.)
* When autosync==0, the default behavior is still completely unchanged.
*/
time_frame=0; // don't sleep!
blit_frame=0; // don't display!
} else {
// It's time to sleep...
frame_time_remaining=0;
time_frame-=GetRelativeTime(); // reset timer
if(sh_audio && !d_audio->eof){
float delay=playback_speed*audio_out->get_delay();
mp_dbg(MSGT_AVSYNC,MSGL_DBG2,"delay=%f\n",delay);
if (autosync){
/*
* Adjust this raw delay value by calculating the expected
* delay for this frame and generating a new value which is
* weighted between the two. The higher autosync is, the
* closer to the delay value gets to that which "-nosound"
* would have used, and the longer it will take for A/V
* sync to settle at the right value (but it eventually will.)
* This settling time is very short for values below 100.
*/
float predicted = sh_audio->delay+time_frame;
float difference = delay - predicted;
delay = predicted + difference / (float)autosync;
}
time_frame=delay-sh_audio->delay;
// delay = amount of audio buffered in soundcard/driver
if(delay>0.25) delay=0.25; else
if(delay<0.10) delay=0.10;
if(time_frame>delay*0.6){
// sleep time too big - may cause audio drops (buffer underrun)
frame_time_remaining=1;
time_frame=delay*0.5;
}
} else {
// NOSOUND:
if( (time_frame<-3*frame_time || time_frame>3*frame_time) || benchmark)
time_frame=0;
}
// if(mp_msg_test(MSGT_CPLAYER,MSGL_DBG2)printf("sleep: %5.3f a:%6.3f v:%6.3f \n",time_frame,sh_audio->timer,sh_video->timer);
aq_sleep_time+=time_frame;
} // !drop_frame
//============================== SLEEP: ===================================
time_frame/=playback_speed;
// flag 256 means: libvo driver does its timing (dvb card)
if(time_frame>0.001 && !(vo_flags&256))
time_frame = timing_sleep(time_frame);
frame_time_remaining = sleep_until_update(&time_frame, &aq_sleep_time);
//====================== FLIP PAGE (VIDEO BLT): =========================