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Merge pull request #9979 from hasenbanck/better-buffer-logic

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Fix the ffmpeg core packet buffer logic.
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Twinaphex 2020-01-10 15:04:31 +01:00 committed by GitHub
commit 28520af599
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1 changed files with 16 additions and 9 deletions
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25
cores/libretro-ffmpeg/ffmpeg_core.c
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@ -1530,8 +1530,16 @@ static void decode_thread_seek(double time)
#endif
}
static bool earlier_or_close_enough(double p1, double p2) {
return (p1 <= p2 || (p1-p2) <= 0.001);
/**
* This function makes sure that we don't decode too many
* packets and cause stalls in our decoding pipeline.
* This could happen if we decode too many packets and
* saturate our buffers. We have a window of "still okay"
* to decode, that depends on the media fps.
**/
static bool earlier_or_close_enough(double p1, double p2)
{
return (p1 <= p2 || (p1-p2) < (1.0 / media.interpolate_fps) );
}
static void decode_thread(void *data)
@ -1643,15 +1651,14 @@ static void decode_thread(void *data)
/*
* Decode audio packet if:
* 1. there is a vido packet for in the buffer
* 2. it's the start of file
* 3. it's audio only media
* 4. EOF
* 1. it's the start of file or it's audio only media
* 2. there is a video packet for in the buffer
* 3. EOF
**/
if (!packet_buffer_empty(audio_packet_buffer) &&
((!eof && earlier_or_close_enough(next_audio_start, next_video_end)) ||
next_video_end == 0.0 ||
eof))
((next_video_end == 0.0 ||
!eof && earlier_or_close_enough(next_audio_start, next_video_end)) ||
eof))
{
packet_buffer_get_packet(audio_packet_buffer, pkt);
last_audio_end = audio_timebase * (pkt->pts + pkt->duration);