mirror of
https://github.com/mpv-player/mpv
synced 2024-12-22 06:42:03 +00:00
f5219720f8
Refactor the PTS handling code to make it cleaner, and to separate the bits that use PTS sorting. Add a heuristic to fall back to DTS if the PTS us non-monotonic. This code is based on what FFmpeg/Libav use for ffplay/avplay and also best_effort_timestamp (which is only in FFmpeg). Basically, this 1. just uses the DTS if PTS is unset, and 2. ignores PTS entirely if PTS is non- monotonic, but DTS is sorted. The code is pretty much the same as in Libav [1]. I'm not sure if all of it is really needed, or if it does more than what the paragraph above mentions. But maybe it's fine to cargo-cult this. This heuristic fixes playback of mpeg4 in ogm, which returns packets with PTS==DTS, even though the PTS timestamps should follow codec reordering. This is probably a libavformat demuxer bug, but good luck trying to fix it. The way vd_lavc.c returns the frame PTS and DTS to dec_video.c is a bit inelegant, but maybe better than trying to mess the PTS back into the decoder callback again. [1] https://git.libav.org/?p=libav.git;a=blob;f=cmdutils.c;h=3f1c667075724c5cde69d840ed5ed7d992898334;hb=fa515c2088e1d082d45741bbd5c05e13b0500804#l1431
35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MP_AVCOMMON_H
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#define MP_AVCOMMON_H
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#include <libavutil/avutil.h>
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#include <libavcodec/avcodec.h>
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struct mp_decoder_list;
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struct demux_packet;
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void mp_copy_lav_codec_headers(AVCodecContext *avctx, AVCodecContext *st);
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void mp_set_av_packet(AVPacket *dst, struct demux_packet *mpkt);
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void mp_get_av_frame_pkt_ts(AVFrame *frame, double *out_pts, double *out_dts);
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void mp_add_lavc_decoders(struct mp_decoder_list *list, enum AVMediaType type);
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int mp_codec_to_av_codec_id(const char *codec);
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const char *mp_codec_from_av_codec_id(int codec_id);
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#endif
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