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https://github.com/mpv-player/mpv
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7165ebd0ba
Yay, more subtle state on top of this nightmarish, fragile state machine. But this is what happens when you subvert the laws of nature. This simple checks where playback should "resume" from when no packets were returned to the decoder yet after the seek that initiated backward playback. The main purpose is to process the first returned keyframe range in the same way like all other ranges. This ensures that things like preroll are included properly. Before this commit, it could for example have happened that the start of the first audio frame was slightly broken, because no preroll was included. Since the audio frame is reversed before sending it to the audio output, it would have added an audible discontinuity before the second frame was played; all subsequent frames would have been fine. (Although I didn't test and confirm this particular issue.) In future, this could be useful for certain other things. At least the condition for delaying the backstep seek becomes simpler and more explicit. Move the code that attempts to start demuxing up in dequeue_packet. Before, it was not called when the stream was in back_restarting state. This commit makes streams be in back_restarting state at initialization, so the demuxer would never have started reading. Likewise, we need to call back_demux_see_packets() right after seek in case the seek was within the cache. (We don't bother with checking whether it was a cached seek; nothing happens if it was a normal one.) There is nothing else that would process these cached packets explicitly, although coincidences could sporadically trigger it. |
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| .. | ||
| codec_tags.c | ||
| codec_tags.h | ||
| cue.c | ||
| cue.h | ||
| demux_cue.c | ||
| demux_edl.c | ||
| demux_lavf.c | ||
| demux_libarchive.c | ||
| demux_mf.c | ||
| demux_mkv_timeline.c | ||
| demux_mkv.c | ||
| demux_null.c | ||
| demux_playlist.c | ||
| demux_raw.c | ||
| demux_timeline.c | ||
| demux.c | ||
| demux.h | ||
| ebml.c | ||
| ebml.h | ||
| matroska.h | ||
| packet.c | ||
| packet.h | ||
| stheader.h | ||
| timeline.c | ||
| timeline.h | ||