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lavd/sdl: add delay when no events are found in the event queue 

Avoid busy loops and decrease CPU usage.

Suggested-By: Roger Pack
This commit is contained in:
Stefano Sabatini 2013-11-26 18:37:30 +01:00
parent 35349bbb97
commit 7043311969
1 changed files with 6 additions and 2 deletions
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8
libavdevice/sdl.c
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@ -180,10 +180,14 @@ init_end:
SDL_Event event; SDL_Event event;
SDL_PumpEvents(); SDL_PumpEvents();
ret = SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_ALLEVENTS); ret = SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_ALLEVENTS);
if (ret < 0) if (ret < 0) {
av_log(s, AV_LOG_ERROR, "Error when getting SDL event: %s\n", SDL_GetError()); av_log(s, AV_LOG_ERROR, "Error when getting SDL event: %s\n", SDL_GetError());
if (ret <= 0)
continue; continue;
}
if (ret == 0) {
SDL_Delay(10);
continue;
}
switch (event.type) { switch (event.type) {
case SDL_KEYDOWN: case SDL_KEYDOWN: