mirror of
https://github.com/mpv-player/mpv
synced 2024-12-22 14:52:43 +00:00
e6afc53e7c
Before this change, mpv used to get the total duration from `avformat_find_stream_info` and used the per-track duration as a fallback. This change reverses this order of preference. The timestamps returned by `avformat_find_stream_info` are truncated or rounded or floored (depending on the decoder) at the 6th decimal place. For e.g. `avformat_find_stream_info` may return us a duration like 44.138667, whereas the duration we get from the per-track struct has a higher degree of precision like 44.13866666666... and so on. This caused various problems such as the playback_pts being a bigger value than the duration, which would cause time-remaining to be a negative value in some cases. Or cause you to reach a negative starting timestamp when looping on an audio file with `gapless-audio`. Moreover, we already skipped calling `avformat_find_stream_info` for mp4, so we had already been utilizing this per-track fallback method for finding the duration for mp4 files. It should be noted that while this change is only required for audio-only formats, there is no harm in doing this for videos as well.
1435 lines
49 KiB
C
1435 lines
49 KiB
C
/*
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* Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
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*
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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
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <limits.h>
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#include <stdbool.h>
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#include <string.h>
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#include <strings.h>
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#include <errno.h>
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#include <assert.h>
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#include "config.h"
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#include <libavformat/avformat.h>
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#include <libavformat/avio.h>
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#include <libavutil/avutil.h>
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#include <libavutil/avstring.h>
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#include <libavutil/mathematics.h>
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#include <libavutil/replaygain.h>
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#include <libavutil/display.h>
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#include <libavutil/opt.h>
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#include <libavutil/dovi_meta.h>
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#include "audio/chmap_avchannel.h"
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#include "common/msg.h"
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#include "common/tags.h"
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#include "common/av_common.h"
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#include "misc/bstr.h"
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#include "misc/charset_conv.h"
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#include "misc/thread_tools.h"
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#include "stream/stream.h"
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#include "demux.h"
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#include "stheader.h"
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#include "options/m_config.h"
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#include "options/m_option.h"
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#include "options/path.h"
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#ifndef AV_DISPOSITION_TIMED_THUMBNAILS
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#define AV_DISPOSITION_TIMED_THUMBNAILS 0
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#endif
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#ifndef AV_DISPOSITION_STILL_IMAGE
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#define AV_DISPOSITION_STILL_IMAGE 0
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#endif
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#define INITIAL_PROBE_SIZE STREAM_BUFFER_SIZE
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#define PROBE_BUF_SIZE (10 * 1024 * 1024)
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// Should correspond to IO_BUFFER_SIZE in libavformat/aviobuf.c (not public)
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// libavformat (almost) always reads data in blocks of this size.
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#define BIO_BUFFER_SIZE 32768
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#define OPT_BASE_STRUCT struct demux_lavf_opts
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struct demux_lavf_opts {
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int probesize;
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int probeinfo;
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int probescore;
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float analyzeduration;
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int buffersize;
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bool allow_mimetype;
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char *format;
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char **avopts;
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bool hacks;
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char *sub_cp;
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int rtsp_transport;
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int linearize_ts;
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bool propagate_opts;
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};
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const struct m_sub_options demux_lavf_conf = {
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.opts = (const m_option_t[]) {
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{"demuxer-lavf-probesize", OPT_INT(probesize), M_RANGE(32, INT_MAX)},
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{"demuxer-lavf-probe-info", OPT_CHOICE(probeinfo,
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{"no", 0}, {"yes", 1}, {"auto", -1}, {"nostreams", -2})},
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{"demuxer-lavf-format", OPT_STRING(format)},
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{"demuxer-lavf-analyzeduration", OPT_FLOAT(analyzeduration),
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M_RANGE(0, 3600)},
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{"demuxer-lavf-buffersize", OPT_INT(buffersize),
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M_RANGE(1, 10 * 1024 * 1024), OPTDEF_INT(BIO_BUFFER_SIZE)},
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{"demuxer-lavf-allow-mimetype", OPT_BOOL(allow_mimetype)},
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{"demuxer-lavf-probescore", OPT_INT(probescore),
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M_RANGE(1, AVPROBE_SCORE_MAX)},
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{"demuxer-lavf-hacks", OPT_BOOL(hacks)},
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{"demuxer-lavf-o", OPT_KEYVALUELIST(avopts)},
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{"sub-codepage", OPT_STRING(sub_cp)},
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{"rtsp-transport", OPT_CHOICE(rtsp_transport,
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{"lavf", 0},
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{"udp", 1},
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{"tcp", 2},
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{"http", 3},
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{"udp_multicast", 4})},
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{"demuxer-lavf-linearize-timestamps", OPT_CHOICE(linearize_ts,
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{"no", 0}, {"auto", -1}, {"yes", 1})},
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{"demuxer-lavf-propagate-opts", OPT_BOOL(propagate_opts)},
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{0}
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},
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.size = sizeof(struct demux_lavf_opts),
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.defaults = &(const struct demux_lavf_opts){
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.probeinfo = -1,
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.allow_mimetype = true,
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.hacks = true,
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// AVPROBE_SCORE_MAX/4 + 1 is the "recommended" limit. Below that, the
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// user is supposed to retry with larger probe sizes until a higher
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// value is reached.
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.probescore = AVPROBE_SCORE_MAX/4 + 1,
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.sub_cp = "auto",
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.rtsp_transport = 2,
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.linearize_ts = -1,
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.propagate_opts = true,
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},
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};
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struct format_hack {
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const char *ff_name;
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const char *mime_type;
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int probescore;
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float analyzeduration;
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bool skipinfo : 1; // skip avformat_find_stream_info()
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unsigned int if_flags; // additional AVInputFormat.flags flags
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bool max_probe : 1; // use probescore only if max. probe size reached
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bool ignore : 1; // blacklisted
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bool no_stream : 1; // do not wrap struct stream as AVIOContext
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bool use_stream_ids : 1; // has a meaningful native stream IDs (export it)
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bool fully_read : 1; // set demuxer.fully_read flag
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bool detect_charset : 1; // format is a small text file, possibly not UTF8
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// Do not confuse player's position estimation (position is into external
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// segment, with e.g. HLS, player knows about the playlist main file only).
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bool clear_filepos : 1;
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bool linearize_audio_ts : 1;// compensate timestamp resets (audio only)
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bool fix_editlists : 1;
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bool is_network : 1;
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bool no_seek : 1;
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bool no_pcm_seek : 1;
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bool no_seek_on_no_duration : 1;
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bool readall_on_no_streamseek : 1;
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};
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#define BLACKLIST(fmt) {fmt, .ignore = true}
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#define TEXTSUB(fmt) {fmt, .fully_read = true, .detect_charset = true}
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#define TEXTSUB_UTF8(fmt) {fmt, .fully_read = true}
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static const struct format_hack format_hacks[] = {
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// for webradios
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{"aac", "audio/aacp", 25, 0.5},
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{"aac", "audio/aac", 25, 0.5},
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// some mp3 files don't detect correctly (usually id3v2 too large)
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{"mp3", "audio/mpeg", 24, 0.5},
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{"mp3", NULL, 24, .max_probe = true},
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{"hls", .no_stream = true, .clear_filepos = true},
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{"dash", .no_stream = true, .clear_filepos = true},
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{"sdp", .clear_filepos = true, .is_network = true, .no_seek = true},
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{"mpeg", .use_stream_ids = true},
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{"mpegts", .use_stream_ids = true},
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{"mxf", .use_stream_ids = true},
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{"avi", .use_stream_ids = true},
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{"asf", .use_stream_ids = true},
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{"mp4", .skipinfo = true, .fix_editlists = true, .no_pcm_seek = true,
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.use_stream_ids = true},
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{"matroska", .skipinfo = true, .no_pcm_seek = true, .use_stream_ids = true},
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{"v4l2", .no_seek = true},
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{"rtsp", .no_seek_on_no_duration = true},
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// In theory, such streams might contain timestamps, but virtually none do.
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{"h264", .if_flags = AVFMT_NOTIMESTAMPS },
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{"hevc", .if_flags = AVFMT_NOTIMESTAMPS },
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// Some Ogg shoutcast streams are essentially concatenated OGG files. They
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// reset timestamps, which causes all sorts of problems.
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{"ogg", .linearize_audio_ts = true, .use_stream_ids = true},
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// At some point, FFmpeg lost the ability to read gif from unseekable
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// streams.
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{"gif", .readall_on_no_streamseek = true},
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TEXTSUB("aqtitle"), TEXTSUB("jacosub"), TEXTSUB("microdvd"),
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TEXTSUB("mpl2"), TEXTSUB("mpsub"), TEXTSUB("pjs"), TEXTSUB("realtext"),
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TEXTSUB("sami"), TEXTSUB("srt"), TEXTSUB("stl"), TEXTSUB("subviewer"),
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TEXTSUB("subviewer1"), TEXTSUB("vplayer"), TEXTSUB("ass"),
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TEXTSUB_UTF8("webvtt"),
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// Useless non-sense, sometimes breaks MLP2 subreader.c fallback
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BLACKLIST("tty"),
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// Let's open files with extremely generic extensions (.bin) with a
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// demuxer that doesn't have a probe function! NO.
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BLACKLIST("bin"),
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// Useless, does not work with custom streams.
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BLACKLIST("image2"),
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{0}
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};
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struct nested_stream {
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AVIOContext *id;
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int64_t last_bytes;
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};
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struct stream_info {
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struct sh_stream *sh;
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double last_key_pts;
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double highest_pts;
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double ts_offset;
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};
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#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(59, 10, 100)
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#define HAVE_IO_CLOSE2 1
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#else
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#define HAVE_IO_CLOSE2 0
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#endif
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typedef struct lavf_priv {
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struct stream *stream;
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bool own_stream;
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char *filename;
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struct format_hack format_hack;
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const AVInputFormat *avif;
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int avif_flags;
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AVFormatContext *avfc;
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AVIOContext *pb;
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struct stream_info **streams; // NULL for unknown streams
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int num_streams;
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char *mime_type;
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double seek_delay;
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struct demux_lavf_opts *opts;
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double mf_fps;
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bool pcm_seek_hack_disabled;
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AVStream *pcm_seek_hack;
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int pcm_seek_hack_packet_size;
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int linearize_ts;
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bool any_ts_fixed;
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int retry_counter;
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AVDictionary *av_opts;
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// Proxying nested streams.
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struct nested_stream *nested;
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int num_nested;
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int (*default_io_open)(struct AVFormatContext *s, AVIOContext **pb,
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const char *url, int flags, AVDictionary **options);
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#if HAVE_IO_CLOSE2
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int (*default_io_close2)(struct AVFormatContext *s, AVIOContext *pb);
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#else
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void (*default_io_close)(struct AVFormatContext *s, AVIOContext *pb);
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#endif
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} lavf_priv_t;
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static void update_read_stats(struct demuxer *demuxer)
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{
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lavf_priv_t *priv = demuxer->priv;
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for (int n = 0; n < priv->num_nested; n++) {
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struct nested_stream *nest = &priv->nested[n];
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int64_t cur = nest->id->bytes_read;
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int64_t new = cur - nest->last_bytes;
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nest->last_bytes = cur;
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demux_report_unbuffered_read_bytes(demuxer, new);
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}
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}
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// At least mp4 has name="mov,mp4,m4a,3gp,3g2,mj2", so we split the name
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// on "," in general.
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static bool matches_avinputformat_name(struct lavf_priv *priv,
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const char *name)
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{
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const char *avifname = priv->avif->name;
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while (1) {
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const char *next = strchr(avifname, ',');
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if (!next)
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return !strcmp(avifname, name);
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int len = next - avifname;
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if (len == strlen(name) && !memcmp(avifname, name, len))
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return true;
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avifname = next + 1;
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}
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}
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static int mp_read(void *opaque, uint8_t *buf, int size)
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{
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struct demuxer *demuxer = opaque;
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lavf_priv_t *priv = demuxer->priv;
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struct stream *stream = priv->stream;
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if (!stream)
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return 0;
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int ret = stream_read_partial(stream, buf, size);
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MP_TRACE(demuxer, "%d=mp_read(%p, %p, %d), pos: %"PRId64", eof:%d\n",
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ret, stream, buf, size, stream_tell(stream), stream->eof);
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return ret ? ret : AVERROR_EOF;
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}
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static int64_t mp_seek(void *opaque, int64_t pos, int whence)
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{
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struct demuxer *demuxer = opaque;
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lavf_priv_t *priv = demuxer->priv;
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struct stream *stream = priv->stream;
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if (!stream)
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return -1;
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MP_TRACE(demuxer, "mp_seek(%p, %"PRId64", %s)\n", stream, pos,
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whence == SEEK_END ? "end" :
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whence == SEEK_CUR ? "cur" :
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whence == SEEK_SET ? "set" : "size");
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if (whence == SEEK_END || whence == AVSEEK_SIZE) {
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int64_t end = stream_get_size(stream);
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if (end < 0)
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return -1;
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if (whence == AVSEEK_SIZE)
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return end;
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pos += end;
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} else if (whence == SEEK_CUR) {
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pos += stream_tell(stream);
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} else if (whence != SEEK_SET) {
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return -1;
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}
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if (pos < 0)
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return -1;
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int64_t current_pos = stream_tell(stream);
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if (stream_seek(stream, pos) == 0) {
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stream_seek(stream, current_pos);
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return -1;
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}
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return pos;
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}
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static int64_t mp_read_seek(void *opaque, int stream_idx, int64_t ts, int flags)
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{
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struct demuxer *demuxer = opaque;
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lavf_priv_t *priv = demuxer->priv;
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struct stream *stream = priv->stream;
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struct stream_avseek cmd = {
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.stream_index = stream_idx,
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.timestamp = ts,
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.flags = flags,
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};
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if (stream && stream_control(stream, STREAM_CTRL_AVSEEK, &cmd) == STREAM_OK) {
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stream_drop_buffers(stream);
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return 0;
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}
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return AVERROR(ENOSYS);
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}
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static void list_formats(struct demuxer *demuxer)
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{
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MP_INFO(demuxer, "Available lavf input formats:\n");
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const AVInputFormat *fmt;
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void *iter = NULL;
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while ((fmt = av_demuxer_iterate(&iter)))
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MP_INFO(demuxer, "%15s : %s\n", fmt->name, fmt->long_name);
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}
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static void convert_charset(struct demuxer *demuxer)
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{
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lavf_priv_t *priv = demuxer->priv;
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char *cp = priv->opts->sub_cp;
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if (!cp || !cp[0] || mp_charset_is_utf8(cp))
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return;
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bstr data = stream_read_complete(priv->stream, NULL, 128 * 1024 * 1024);
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if (!data.start) {
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MP_WARN(demuxer, "File too big (or error reading) - skip charset probing.\n");
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return;
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}
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void *alloc = data.start;
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cp = (char *)mp_charset_guess(priv, demuxer->log, data, cp, 0);
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if (cp && !mp_charset_is_utf8(cp))
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MP_INFO(demuxer, "Using subtitle charset: %s\n", cp);
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// libavformat transparently converts UTF-16 to UTF-8
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if (!mp_charset_is_utf16(cp) && !mp_charset_is_utf8(cp)) {
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bstr conv = mp_iconv_to_utf8(demuxer->log, data, cp, MP_ICONV_VERBOSE);
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if (conv.start && conv.start != data.start)
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talloc_steal(alloc, conv.start);
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if (conv.start)
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data = conv;
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}
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if (data.start) {
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priv->stream = stream_memory_open(demuxer->global, data.start, data.len);
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priv->own_stream = true;
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}
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talloc_free(alloc);
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}
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static char *remove_prefix(char *s, const char *const *prefixes)
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{
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for (int n = 0; prefixes[n]; n++) {
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int len = strlen(prefixes[n]);
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if (strncmp(s, prefixes[n], len) == 0)
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return s + len;
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}
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return s;
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}
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static const char *const prefixes[] =
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{"ffmpeg://", "lavf://", "avdevice://", "av://", NULL};
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static int lavf_check_file(demuxer_t *demuxer, enum demux_check check)
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{
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lavf_priv_t *priv = demuxer->priv;
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struct demux_lavf_opts *lavfdopts = priv->opts;
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struct stream *s = priv->stream;
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priv->filename = remove_prefix(s->url, prefixes);
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char *avdevice_format = NULL;
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if (s->info && strcmp(s->info->name, "avdevice") == 0) {
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// always require filename in the form "format:filename"
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char *sep = strchr(priv->filename, ':');
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if (!sep) {
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MP_FATAL(demuxer, "Must specify filename in 'format:filename' form\n");
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return -1;
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}
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avdevice_format = talloc_strndup(priv, priv->filename,
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sep - priv->filename);
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priv->filename = sep + 1;
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}
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char *mime_type = s->mime_type;
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if (!lavfdopts->allow_mimetype || !mime_type)
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mime_type = "";
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const AVInputFormat *forced_format = NULL;
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const char *format = lavfdopts->format;
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if (!format)
|
|
format = s->lavf_type;
|
|
if (!format)
|
|
format = avdevice_format;
|
|
if (format) {
|
|
if (strcmp(format, "help") == 0) {
|
|
list_formats(demuxer);
|
|
return -1;
|
|
}
|
|
forced_format = av_find_input_format(format);
|
|
if (!forced_format) {
|
|
MP_FATAL(demuxer, "Unknown lavf format %s\n", format);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
// HLS streams seems to be not well tagged, so matching mime type is not
|
|
// enough. Strip URL parameters and match extension.
|
|
bstr ext = bstr_get_ext(bstr_split(bstr0(priv->filename), "?#", NULL));
|
|
AVProbeData avpd = {
|
|
// Disable file-extension matching with normal checks, except for HLS
|
|
.filename = !bstrcasecmp0(ext, "m3u8") || !bstrcasecmp0(ext, "m3u") ||
|
|
check <= DEMUX_CHECK_REQUEST ? priv->filename : "",
|
|
.buf_size = 0,
|
|
.buf = av_mallocz(PROBE_BUF_SIZE + AV_INPUT_BUFFER_PADDING_SIZE),
|
|
.mime_type = lavfdopts->allow_mimetype ? mime_type : NULL,
|
|
};
|
|
if (!avpd.buf)
|
|
return -1;
|
|
|
|
bool final_probe = false;
|
|
do {
|
|
int score = 0;
|
|
|
|
if (forced_format) {
|
|
priv->avif = forced_format;
|
|
score = AVPROBE_SCORE_MAX;
|
|
} else {
|
|
int nsize = av_clip(avpd.buf_size * 2, INITIAL_PROBE_SIZE,
|
|
PROBE_BUF_SIZE);
|
|
nsize = stream_read_peek(s, avpd.buf, nsize);
|
|
if (nsize <= avpd.buf_size)
|
|
final_probe = true;
|
|
avpd.buf_size = nsize;
|
|
|
|
priv->avif = av_probe_input_format2(&avpd, avpd.buf_size > 0, &score);
|
|
}
|
|
|
|
if (priv->avif) {
|
|
MP_VERBOSE(demuxer, "Found '%s' at score=%d size=%d%s.\n",
|
|
priv->avif->name, score, avpd.buf_size,
|
|
forced_format ? " (forced)" : "");
|
|
|
|
for (int n = 0; lavfdopts->hacks && format_hacks[n].ff_name; n++) {
|
|
const struct format_hack *entry = &format_hacks[n];
|
|
if (!matches_avinputformat_name(priv, entry->ff_name))
|
|
continue;
|
|
if (entry->mime_type && strcasecmp(entry->mime_type, mime_type) != 0)
|
|
continue;
|
|
priv->format_hack = *entry;
|
|
break;
|
|
}
|
|
|
|
if (score >= lavfdopts->probescore)
|
|
break;
|
|
|
|
if (priv->format_hack.probescore &&
|
|
score >= priv->format_hack.probescore &&
|
|
(!priv->format_hack.max_probe || final_probe))
|
|
break;
|
|
}
|
|
|
|
priv->avif = NULL;
|
|
priv->format_hack = (struct format_hack){0};
|
|
} while (!final_probe);
|
|
|
|
av_free(avpd.buf);
|
|
|
|
if (priv->avif && !forced_format && priv->format_hack.ignore) {
|
|
MP_VERBOSE(demuxer, "Format blacklisted.\n");
|
|
priv->avif = NULL;
|
|
}
|
|
|
|
if (!priv->avif) {
|
|
MP_VERBOSE(demuxer, "No format found, try lowering probescore or forcing the format.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (lavfdopts->hacks)
|
|
priv->avif_flags = priv->avif->flags | priv->format_hack.if_flags;
|
|
|
|
priv->linearize_ts = lavfdopts->linearize_ts;
|
|
if (priv->linearize_ts < 0 && !priv->format_hack.linearize_audio_ts)
|
|
priv->linearize_ts = 0;
|
|
|
|
demuxer->filetype = priv->avif->name;
|
|
|
|
if (priv->format_hack.detect_charset)
|
|
convert_charset(demuxer);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static char *replace_idx_ext(void *ta_ctx, bstr f)
|
|
{
|
|
if (f.len < 4 || f.start[f.len - 4] != '.')
|
|
return NULL;
|
|
char *ext = bstr_endswith0(f, "IDX") ? "SUB" : "sub"; // match case
|
|
return talloc_asprintf(ta_ctx, "%.*s.%s", BSTR_P(bstr_splice(f, 0, -4)), ext);
|
|
}
|
|
|
|
static void guess_and_set_vobsub_name(struct demuxer *demuxer, AVDictionary **d)
|
|
{
|
|
lavf_priv_t *priv = demuxer->priv;
|
|
if (!matches_avinputformat_name(priv, "vobsub"))
|
|
return;
|
|
|
|
void *tmp = talloc_new(NULL);
|
|
bstr bfilename = bstr0(priv->filename);
|
|
char *subname = NULL;
|
|
if (mp_is_url(bfilename)) {
|
|
// It might be a http URL, which has additional parameters after the
|
|
// end of the actual file path.
|
|
bstr start, end;
|
|
if (bstr_split_tok(bfilename, "?", &start, &end)) {
|
|
subname = replace_idx_ext(tmp, start);
|
|
if (subname)
|
|
subname = talloc_asprintf(tmp, "%s?%.*s", subname, BSTR_P(end));
|
|
}
|
|
}
|
|
if (!subname)
|
|
subname = replace_idx_ext(tmp, bfilename);
|
|
if (!subname)
|
|
subname = talloc_asprintf(tmp, "%.*s.sub", BSTR_P(bfilename));
|
|
|
|
MP_VERBOSE(demuxer, "Assuming associated .sub file: %s\n", subname);
|
|
av_dict_set(d, "sub_name", subname, 0);
|
|
talloc_free(tmp);
|
|
}
|
|
|
|
static void select_tracks(struct demuxer *demuxer, int start)
|
|
{
|
|
lavf_priv_t *priv = demuxer->priv;
|
|
for (int n = start; n < priv->num_streams; n++) {
|
|
struct sh_stream *stream = priv->streams[n]->sh;
|
|
AVStream *st = priv->avfc->streams[n];
|
|
bool selected = stream && demux_stream_is_selected(stream) &&
|
|
!stream->attached_picture;
|
|
st->discard = selected ? AVDISCARD_DEFAULT : AVDISCARD_ALL;
|
|
}
|
|
}
|
|
|
|
static void export_replaygain(demuxer_t *demuxer, struct sh_stream *sh,
|
|
AVStream *st)
|
|
{
|
|
for (int i = 0; i < st->nb_side_data; i++) {
|
|
AVReplayGain *av_rgain;
|
|
struct replaygain_data *rgain;
|
|
AVPacketSideData *src_sd = &st->side_data[i];
|
|
|
|
if (src_sd->type != AV_PKT_DATA_REPLAYGAIN)
|
|
continue;
|
|
|
|
av_rgain = (AVReplayGain*)src_sd->data;
|
|
rgain = talloc_ptrtype(demuxer, rgain);
|
|
rgain->track_gain = rgain->album_gain = 0;
|
|
rgain->track_peak = rgain->album_peak = 1;
|
|
|
|
// Set values in *rgain, using track gain as a fallback for album gain
|
|
// if the latter is not present. This behavior matches that in
|
|
// demux/demux.c's decode_rgain; if you change this, please make
|
|
// equivalent changes there too.
|
|
if (av_rgain->track_gain != INT32_MIN && av_rgain->track_peak != 0.0) {
|
|
// Track gain is defined.
|
|
rgain->track_gain = av_rgain->track_gain / 100000.0f;
|
|
rgain->track_peak = av_rgain->track_peak / 100000.0f;
|
|
|
|
if (av_rgain->album_gain != INT32_MIN &&
|
|
av_rgain->album_peak != 0.0)
|
|
{
|
|
// Album gain is also defined.
|
|
rgain->album_gain = av_rgain->album_gain / 100000.0f;
|
|
rgain->album_peak = av_rgain->album_peak / 100000.0f;
|
|
} else {
|
|
// Album gain is undefined; fall back to track gain.
|
|
rgain->album_gain = rgain->track_gain;
|
|
rgain->album_peak = rgain->track_peak;
|
|
}
|
|
}
|
|
|
|
// This must be run only before the stream was added, otherwise there
|
|
// will be race conditions with accesses from the user thread.
|
|
assert(!sh->ds);
|
|
sh->codec->replaygain_data = rgain;
|
|
}
|
|
}
|
|
|
|
// Return a dictionary entry as (decimal) integer.
|
|
static int dict_get_decimal(AVDictionary *dict, const char *entry, int def)
|
|
{
|
|
AVDictionaryEntry *e = av_dict_get(dict, entry, NULL, 0);
|
|
if (e && e->value) {
|
|
char *end = NULL;
|
|
long int r = strtol(e->value, &end, 10);
|
|
if (end && !end[0] && r >= INT_MIN && r <= INT_MAX)
|
|
return r;
|
|
}
|
|
return def;
|
|
}
|
|
|
|
static bool is_image(AVStream *st, bool attached_picture, const AVInputFormat *avif)
|
|
{
|
|
return st->nb_frames <= 1 && (
|
|
attached_picture ||
|
|
bstr_endswith0(bstr0(avif->name), "_pipe") ||
|
|
strcmp(avif->name, "alias_pix") == 0 ||
|
|
strcmp(avif->name, "gif") == 0 ||
|
|
strcmp(avif->name, "image2pipe") == 0 ||
|
|
(st->codecpar->codec_id == AV_CODEC_ID_AV1 && st->nb_frames == 1)
|
|
);
|
|
}
|
|
|
|
static void handle_new_stream(demuxer_t *demuxer, int i)
|
|
{
|
|
lavf_priv_t *priv = demuxer->priv;
|
|
AVFormatContext *avfc = priv->avfc;
|
|
AVStream *st = avfc->streams[i];
|
|
struct sh_stream *sh = NULL;
|
|
AVCodecParameters *codec = st->codecpar;
|
|
int lavc_delay = codec->initial_padding;
|
|
|
|
switch (codec->codec_type) {
|
|
case AVMEDIA_TYPE_AUDIO: {
|
|
sh = demux_alloc_sh_stream(STREAM_AUDIO);
|
|
|
|
#if !HAVE_AV_CHANNEL_LAYOUT
|
|
// probably unneeded
|
|
mp_chmap_set_unknown(&sh->codec->channels, codec->channels);
|
|
if (codec->channel_layout)
|
|
mp_chmap_from_lavc(&sh->codec->channels, codec->channel_layout);
|
|
#else
|
|
if (!mp_chmap_from_av_layout(&sh->codec->channels, &codec->ch_layout)) {
|
|
char layout[128] = {0};
|
|
MP_WARN(demuxer,
|
|
"Failed to convert channel layout %s to mpv one!\n",
|
|
av_channel_layout_describe(&codec->ch_layout,
|
|
layout, 128) < 0 ?
|
|
"undefined" : layout);
|
|
}
|
|
#endif
|
|
|
|
sh->codec->samplerate = codec->sample_rate;
|
|
sh->codec->bitrate = codec->bit_rate;
|
|
|
|
double delay = 0;
|
|
if (codec->sample_rate > 0)
|
|
delay = lavc_delay / (double)codec->sample_rate;
|
|
priv->seek_delay = MPMAX(priv->seek_delay, delay);
|
|
|
|
export_replaygain(demuxer, sh, st);
|
|
|
|
sh->seek_preroll = delay;
|
|
|
|
break;
|
|
}
|
|
case AVMEDIA_TYPE_VIDEO: {
|
|
sh = demux_alloc_sh_stream(STREAM_VIDEO);
|
|
|
|
if ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) &&
|
|
!(st->disposition & AV_DISPOSITION_TIMED_THUMBNAILS))
|
|
{
|
|
sh->attached_picture =
|
|
new_demux_packet_from_avpacket(&st->attached_pic);
|
|
if (sh->attached_picture) {
|
|
sh->attached_picture->pts = 0;
|
|
talloc_steal(sh, sh->attached_picture);
|
|
sh->attached_picture->keyframe = true;
|
|
}
|
|
}
|
|
|
|
if (!sh->attached_picture) {
|
|
// A real video stream probably means it's a packet based format.
|
|
priv->pcm_seek_hack_disabled = true;
|
|
priv->pcm_seek_hack = NULL;
|
|
// Also, we don't want to do this shit for ogv videos.
|
|
if (priv->linearize_ts < 0)
|
|
priv->linearize_ts = 0;
|
|
}
|
|
|
|
sh->codec->disp_w = codec->width;
|
|
sh->codec->disp_h = codec->height;
|
|
if (st->avg_frame_rate.num)
|
|
sh->codec->fps = av_q2d(st->avg_frame_rate);
|
|
if (is_image(st, sh->attached_picture, priv->avif)) {
|
|
MP_VERBOSE(demuxer, "Assuming this is an image format.\n");
|
|
sh->image = true;
|
|
sh->codec->fps = priv->mf_fps;
|
|
}
|
|
sh->codec->par_w = st->sample_aspect_ratio.num;
|
|
sh->codec->par_h = st->sample_aspect_ratio.den;
|
|
|
|
uint8_t *sd = av_stream_get_side_data(st, AV_PKT_DATA_DISPLAYMATRIX, NULL);
|
|
if (sd) {
|
|
double r = av_display_rotation_get((uint32_t *)sd);
|
|
if (!isnan(r))
|
|
sh->codec->rotate = (((int)(-r) % 360) + 360) % 360;
|
|
}
|
|
|
|
if ((sd = av_stream_get_side_data(st, AV_PKT_DATA_DOVI_CONF, NULL))) {
|
|
const AVDOVIDecoderConfigurationRecord *cfg = (void *) sd;
|
|
MP_VERBOSE(demuxer, "Found Dolby Vision config record: profile "
|
|
"%d level %d\n", cfg->dv_profile, cfg->dv_level);
|
|
av_format_inject_global_side_data(avfc);
|
|
}
|
|
|
|
// This also applies to vfw-muxed mkv, but we can't detect these easily.
|
|
sh->codec->avi_dts = matches_avinputformat_name(priv, "avi");
|
|
|
|
break;
|
|
}
|
|
case AVMEDIA_TYPE_SUBTITLE: {
|
|
sh = demux_alloc_sh_stream(STREAM_SUB);
|
|
|
|
if (codec->extradata_size) {
|
|
sh->codec->extradata = talloc_size(sh, codec->extradata_size);
|
|
memcpy(sh->codec->extradata, codec->extradata, codec->extradata_size);
|
|
sh->codec->extradata_size = codec->extradata_size;
|
|
}
|
|
|
|
if (matches_avinputformat_name(priv, "microdvd")) {
|
|
AVRational r;
|
|
if (av_opt_get_q(avfc, "subfps", AV_OPT_SEARCH_CHILDREN, &r) >= 0) {
|
|
// File headers don't have a FPS set.
|
|
if (r.num < 1 || r.den < 1)
|
|
sh->codec->frame_based = 23.976; // default timebase
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case AVMEDIA_TYPE_ATTACHMENT: {
|
|
AVDictionaryEntry *ftag = av_dict_get(st->metadata, "filename", NULL, 0);
|
|
char *filename = ftag ? ftag->value : NULL;
|
|
AVDictionaryEntry *mt = av_dict_get(st->metadata, "mimetype", NULL, 0);
|
|
char *mimetype = mt ? mt->value : NULL;
|
|
if (mimetype) {
|
|
demuxer_add_attachment(demuxer, filename, mimetype,
|
|
codec->extradata, codec->extradata_size);
|
|
}
|
|
break;
|
|
}
|
|
default: ;
|
|
}
|
|
|
|
struct stream_info *info = talloc_zero(priv, struct stream_info);
|
|
*info = (struct stream_info){
|
|
.sh = sh,
|
|
.last_key_pts = MP_NOPTS_VALUE,
|
|
.highest_pts = MP_NOPTS_VALUE,
|
|
};
|
|
assert(priv->num_streams == i); // directly mapped
|
|
MP_TARRAY_APPEND(priv, priv->streams, priv->num_streams, info);
|
|
|
|
if (sh) {
|
|
sh->ff_index = st->index;
|
|
sh->codec->codec = mp_codec_from_av_codec_id(codec->codec_id);
|
|
sh->codec->codec_tag = codec->codec_tag;
|
|
sh->codec->lav_codecpar = avcodec_parameters_alloc();
|
|
if (sh->codec->lav_codecpar)
|
|
avcodec_parameters_copy(sh->codec->lav_codecpar, codec);
|
|
sh->codec->native_tb_num = st->time_base.num;
|
|
sh->codec->native_tb_den = st->time_base.den;
|
|
|
|
if (st->disposition & AV_DISPOSITION_DEFAULT)
|
|
sh->default_track = true;
|
|
if (st->disposition & AV_DISPOSITION_FORCED)
|
|
sh->forced_track = true;
|
|
if (st->disposition & AV_DISPOSITION_DEPENDENT)
|
|
sh->dependent_track = true;
|
|
if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
|
|
sh->visual_impaired_track = true;
|
|
if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
|
|
sh->hearing_impaired_track = true;
|
|
if (st->disposition & AV_DISPOSITION_STILL_IMAGE)
|
|
sh->still_image = true;
|
|
if (priv->format_hack.use_stream_ids)
|
|
sh->demuxer_id = st->id;
|
|
AVDictionaryEntry *title = av_dict_get(st->metadata, "title", NULL, 0);
|
|
if (title && title->value)
|
|
sh->title = talloc_strdup(sh, title->value);
|
|
if (!sh->title && st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
|
|
sh->title = talloc_asprintf(sh, "visual impaired");
|
|
if (!sh->title && st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
|
|
sh->title = talloc_asprintf(sh, "hearing impaired");
|
|
AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
|
|
if (lang && lang->value && strcmp(lang->value, "und") != 0)
|
|
sh->lang = talloc_strdup(sh, lang->value);
|
|
sh->hls_bitrate = dict_get_decimal(st->metadata, "variant_bitrate", 0);
|
|
AVProgram *prog = av_find_program_from_stream(avfc, NULL, i);
|
|
if (prog)
|
|
sh->program_id = prog->id;
|
|
sh->missing_timestamps = !!(priv->avif_flags & AVFMT_NOTIMESTAMPS);
|
|
mp_tags_copy_from_av_dictionary(sh->tags, st->metadata);
|
|
demux_add_sh_stream(demuxer, sh);
|
|
|
|
// Unfortunately, there is no better way to detect PCM codecs, other
|
|
// than listing them all manually. (Or other "frameless" codecs. Or
|
|
// rather, codecs with frames so small libavformat will put multiple of
|
|
// them into a single packet, but not preserve these artificial packet
|
|
// boundaries on seeking.)
|
|
if (sh->codec->codec && strncmp(sh->codec->codec, "pcm_", 4) == 0 &&
|
|
codec->block_align && !priv->pcm_seek_hack_disabled &&
|
|
priv->opts->hacks && !priv->format_hack.no_pcm_seek &&
|
|
st->time_base.num == 1 && st->time_base.den == codec->sample_rate)
|
|
{
|
|
if (priv->pcm_seek_hack) {
|
|
// More than 1 audio stream => usually doesn't apply.
|
|
priv->pcm_seek_hack_disabled = true;
|
|
priv->pcm_seek_hack = NULL;
|
|
} else {
|
|
priv->pcm_seek_hack = st;
|
|
}
|
|
}
|
|
}
|
|
|
|
select_tracks(demuxer, i);
|
|
}
|
|
|
|
// Add any new streams that might have been added
|
|
static void add_new_streams(demuxer_t *demuxer)
|
|
{
|
|
lavf_priv_t *priv = demuxer->priv;
|
|
while (priv->num_streams < priv->avfc->nb_streams)
|
|
handle_new_stream(demuxer, priv->num_streams);
|
|
}
|
|
|
|
static void update_metadata(demuxer_t *demuxer)
|
|
{
|
|
lavf_priv_t *priv = demuxer->priv;
|
|
if (priv->avfc->event_flags & AVFMT_EVENT_FLAG_METADATA_UPDATED) {
|
|
mp_tags_copy_from_av_dictionary(demuxer->metadata, priv->avfc->metadata);
|
|
priv->avfc->event_flags = 0;
|
|
demux_metadata_changed(demuxer);
|
|
}
|
|
}
|
|
|
|
static int interrupt_cb(void *ctx)
|
|
{
|
|
struct demuxer *demuxer = ctx;
|
|
return mp_cancel_test(demuxer->cancel);
|
|
}
|
|
|
|
static int block_io_open(struct AVFormatContext *s, AVIOContext **pb,
|
|
const char *url, int flags, AVDictionary **options)
|
|
{
|
|
struct demuxer *demuxer = s->opaque;
|
|
MP_ERR(demuxer, "Not opening '%s' due to --access-references=no.\n", url);
|
|
return AVERROR(EACCES);
|
|
}
|
|
|
|
static int nested_io_open(struct AVFormatContext *s, AVIOContext **pb,
|
|
const char *url, int flags, AVDictionary **options)
|
|
{
|
|
struct demuxer *demuxer = s->opaque;
|
|
lavf_priv_t *priv = demuxer->priv;
|
|
|
|
if (priv->opts->propagate_opts) {
|
|
// Copy av_opts to options, but only entries that are not present in
|
|
// options. (Hope this will break less by not overwriting important
|
|
// settings.)
|
|
AVDictionaryEntry *cur = NULL;
|
|
while ((cur = av_dict_get(priv->av_opts, "", cur, AV_DICT_IGNORE_SUFFIX)))
|
|
{
|
|
if (!*options || !av_dict_get(*options, cur->key, NULL, 0)) {
|
|
MP_TRACE(demuxer, "Nested option: '%s'='%s'\n",
|
|
cur->key, cur->value);
|
|
av_dict_set(options, cur->key, cur->value, 0);
|
|
} else {
|
|
MP_TRACE(demuxer, "Skipping nested option: '%s'\n", cur->key);
|
|
}
|
|
}
|
|
}
|
|
|
|
int r = priv->default_io_open(s, pb, url, flags, options);
|
|
if (r >= 0) {
|
|
if (options)
|
|
mp_avdict_print_unset(demuxer->log, MSGL_TRACE, *options);
|
|
struct nested_stream nest = {
|
|
.id = *pb,
|
|
};
|
|
MP_TARRAY_APPEND(priv, priv->nested, priv->num_nested, nest);
|
|
}
|
|
return r;
|
|
}
|
|
|
|
#if HAVE_IO_CLOSE2
|
|
static int nested_io_close2(struct AVFormatContext *s, AVIOContext *pb)
|
|
#else
|
|
static void nested_io_close(struct AVFormatContext *s, AVIOContext *pb)
|
|
#endif
|
|
{
|
|
struct demuxer *demuxer = s->opaque;
|
|
lavf_priv_t *priv = demuxer->priv;
|
|
|
|
for (int n = 0; n < priv->num_nested; n++) {
|
|
if (priv->nested[n].id == pb) {
|
|
MP_TARRAY_REMOVE_AT(priv->nested, priv->num_nested, n);
|
|
break;
|
|
}
|
|
}
|
|
|
|
#if HAVE_IO_CLOSE2
|
|
return priv->default_io_close2(s, pb);
|
|
#else
|
|
priv->default_io_close(s, pb);
|
|
#endif
|
|
}
|
|
|
|
static int demux_open_lavf(demuxer_t *demuxer, enum demux_check check)
|
|
{
|
|
AVFormatContext *avfc = NULL;
|
|
AVDictionaryEntry *t = NULL;
|
|
float analyze_duration = 0;
|
|
lavf_priv_t *priv = talloc_zero(NULL, lavf_priv_t);
|
|
AVDictionary *dopts = NULL;
|
|
|
|
demuxer->priv = priv;
|
|
priv->stream = demuxer->stream;
|
|
|
|
priv->opts = mp_get_config_group(priv, demuxer->global, &demux_lavf_conf);
|
|
struct demux_lavf_opts *lavfdopts = priv->opts;
|
|
|
|
int index_mode;
|
|
mp_read_option_raw(demuxer->global, "index", &m_option_type_choice,
|
|
&index_mode);
|
|
mp_read_option_raw(demuxer->global, "mf-fps", &m_option_type_double,
|
|
&priv->mf_fps);
|
|
|
|
if (lavf_check_file(demuxer, check) < 0)
|
|
goto fail;
|
|
|
|
avfc = avformat_alloc_context();
|
|
if (!avfc)
|
|
goto fail;
|
|
|
|
if (index_mode != 1)
|
|
avfc->flags |= AVFMT_FLAG_IGNIDX;
|
|
|
|
if (lavfdopts->probesize) {
|
|
if (av_opt_set_int(avfc, "probesize", lavfdopts->probesize, 0) < 0)
|
|
MP_ERR(demuxer, "couldn't set option probesize to %u\n",
|
|
lavfdopts->probesize);
|
|
}
|
|
|
|
if (priv->format_hack.analyzeduration)
|
|
analyze_duration = priv->format_hack.analyzeduration;
|
|
if (lavfdopts->analyzeduration)
|
|
analyze_duration = lavfdopts->analyzeduration;
|
|
if (analyze_duration > 0) {
|
|
if (av_opt_set_int(avfc, "analyzeduration",
|
|
analyze_duration * AV_TIME_BASE, 0) < 0)
|
|
MP_ERR(demuxer, "demux_lavf, couldn't set option "
|
|
"analyzeduration to %f\n", analyze_duration);
|
|
}
|
|
|
|
if ((priv->avif_flags & AVFMT_NOFILE) || priv->format_hack.no_stream) {
|
|
mp_setup_av_network_options(&dopts, priv->avif->name,
|
|
demuxer->global, demuxer->log);
|
|
// This might be incorrect.
|
|
demuxer->seekable = true;
|
|
} else {
|
|
void *buffer = av_malloc(lavfdopts->buffersize);
|
|
if (!buffer)
|
|
goto fail;
|
|
priv->pb = avio_alloc_context(buffer, lavfdopts->buffersize, 0,
|
|
demuxer, mp_read, NULL, mp_seek);
|
|
if (!priv->pb) {
|
|
av_free(buffer);
|
|
goto fail;
|
|
}
|
|
priv->pb->read_seek = mp_read_seek;
|
|
priv->pb->seekable = demuxer->seekable ? AVIO_SEEKABLE_NORMAL : 0;
|
|
avfc->pb = priv->pb;
|
|
if (stream_control(priv->stream, STREAM_CTRL_HAS_AVSEEK, NULL) > 0)
|
|
demuxer->seekable = true;
|
|
demuxer->seekable |= priv->format_hack.fully_read;
|
|
}
|
|
|
|
if (matches_avinputformat_name(priv, "rtsp")) {
|
|
const char *transport = NULL;
|
|
switch (lavfdopts->rtsp_transport) {
|
|
case 1: transport = "udp"; break;
|
|
case 2: transport = "tcp"; break;
|
|
case 3: transport = "http"; break;
|
|
case 4: transport = "udp_multicast"; break;
|
|
}
|
|
if (transport)
|
|
av_dict_set(&dopts, "rtsp_transport", transport, 0);
|
|
}
|
|
|
|
guess_and_set_vobsub_name(demuxer, &dopts);
|
|
|
|
if (priv->format_hack.fix_editlists)
|
|
av_dict_set(&dopts, "advanced_editlist", "0", 0);
|
|
|
|
avfc->interrupt_callback = (AVIOInterruptCB){
|
|
.callback = interrupt_cb,
|
|
.opaque = demuxer,
|
|
};
|
|
|
|
avfc->opaque = demuxer;
|
|
if (demuxer->access_references) {
|
|
priv->default_io_open = avfc->io_open;
|
|
avfc->io_open = nested_io_open;
|
|
#if HAVE_IO_CLOSE2
|
|
priv->default_io_close2 = avfc->io_close2;
|
|
avfc->io_close2 = nested_io_close2;
|
|
#else
|
|
priv->default_io_close = avfc->io_close;
|
|
avfc->io_close = nested_io_close;
|
|
#endif
|
|
} else {
|
|
avfc->io_open = block_io_open;
|
|
}
|
|
|
|
mp_set_avdict(&dopts, lavfdopts->avopts);
|
|
|
|
if (av_dict_copy(&priv->av_opts, dopts, 0) < 0) {
|
|
MP_ERR(demuxer, "av_dict_copy() failed\n");
|
|
goto fail;
|
|
}
|
|
|
|
if (priv->format_hack.readall_on_no_streamseek && priv->pb &&
|
|
!priv->pb->seekable)
|
|
{
|
|
MP_VERBOSE(demuxer, "Non-seekable demuxer pre-read hack...\n");
|
|
// Read incremental to avoid unnecessary large buffer sizes.
|
|
int r = 0;
|
|
for (int n = 16; n < 29; n++) {
|
|
r = stream_peek(priv->stream, 1 << n);
|
|
if (r < (1 << n))
|
|
break;
|
|
}
|
|
MP_VERBOSE(demuxer, "...did read %d bytes.\n", r);
|
|
}
|
|
|
|
if (avformat_open_input(&avfc, priv->filename, priv->avif, &dopts) < 0) {
|
|
MP_ERR(demuxer, "avformat_open_input() failed\n");
|
|
goto fail;
|
|
}
|
|
|
|
mp_avdict_print_unset(demuxer->log, MSGL_V, dopts);
|
|
av_dict_free(&dopts);
|
|
|
|
priv->avfc = avfc;
|
|
|
|
bool probeinfo = lavfdopts->probeinfo != 0;
|
|
switch (lavfdopts->probeinfo) {
|
|
case -2: probeinfo = priv->avfc->nb_streams == 0; break;
|
|
case -1: probeinfo = !priv->format_hack.skipinfo; break;
|
|
}
|
|
if (demuxer->params && demuxer->params->skip_lavf_probing)
|
|
probeinfo = false;
|
|
if (probeinfo) {
|
|
if (avformat_find_stream_info(avfc, NULL) < 0) {
|
|
MP_ERR(demuxer, "av_find_stream_info() failed\n");
|
|
goto fail;
|
|
}
|
|
|
|
MP_VERBOSE(demuxer, "avformat_find_stream_info() finished after %"PRId64
|
|
" bytes.\n", stream_tell(priv->stream));
|
|
}
|
|
|
|
for (int i = 0; i < avfc->nb_chapters; i++) {
|
|
AVChapter *c = avfc->chapters[i];
|
|
t = av_dict_get(c->metadata, "title", NULL, 0);
|
|
int index = demuxer_add_chapter(demuxer, t ? t->value : "",
|
|
c->start * av_q2d(c->time_base), i);
|
|
mp_tags_copy_from_av_dictionary(demuxer->chapters[index].metadata, c->metadata);
|
|
}
|
|
|
|
add_new_streams(demuxer);
|
|
|
|
mp_tags_copy_from_av_dictionary(demuxer->metadata, avfc->metadata);
|
|
|
|
demuxer->ts_resets_possible =
|
|
priv->avif_flags & (AVFMT_TS_DISCONT | AVFMT_NOTIMESTAMPS);
|
|
|
|
if (avfc->start_time != AV_NOPTS_VALUE)
|
|
demuxer->start_time = avfc->start_time / (double)AV_TIME_BASE;
|
|
|
|
demuxer->fully_read = priv->format_hack.fully_read;
|
|
|
|
#ifdef AVFMTCTX_UNSEEKABLE
|
|
if (avfc->ctx_flags & AVFMTCTX_UNSEEKABLE)
|
|
demuxer->seekable = false;
|
|
#endif
|
|
|
|
demuxer->is_network |= priv->format_hack.is_network;
|
|
demuxer->seekable &= !priv->format_hack.no_seek;
|
|
|
|
// We initially prefer track durations over container durations because they
|
|
// have a higher degree of precision over the container duration which are
|
|
// only accurate to the 6th decimal place. This is probably a lavf bug.
|
|
double total_duration = 0;
|
|
double av_duration = 0;
|
|
for (int n = 0; n < priv->avfc->nb_streams; n++) {
|
|
AVStream *st = priv->avfc->streams[n];
|
|
if (st->duration <= 0)
|
|
continue;
|
|
double f_duration = st->duration * av_q2d(st->time_base);
|
|
total_duration = MPMAX(total_duration, f_duration);
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ||
|
|
st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
|
|
av_duration = MPMAX(av_duration, f_duration);
|
|
}
|
|
double duration = av_duration > 0 ? av_duration : total_duration;
|
|
if (duration == 0 && priv->avfc->duration > 0)
|
|
duration = (double)priv->avfc->duration / AV_TIME_BASE;
|
|
demuxer->duration = duration;
|
|
|
|
if (demuxer->duration < 0 && priv->format_hack.no_seek_on_no_duration)
|
|
demuxer->seekable = false;
|
|
|
|
// In some cases, libavformat will export bogus bullshit timestamps anyway,
|
|
// such as with mjpeg.
|
|
if (priv->avif_flags & AVFMT_NOTIMESTAMPS) {
|
|
MP_WARN(demuxer,
|
|
"This format is marked by FFmpeg as having no timestamps!\n"
|
|
"FFmpeg will likely make up its own broken timestamps. For\n"
|
|
"video streams you can correct this with:\n"
|
|
" --no-correct-pts --fps=VALUE\n"
|
|
"with VALUE being the real framerate of the stream. You can\n"
|
|
"expect seeking and buffering estimation to be generally\n"
|
|
"broken as well.\n");
|
|
}
|
|
|
|
if (demuxer->fully_read) {
|
|
demux_close_stream(demuxer);
|
|
if (priv->own_stream)
|
|
free_stream(priv->stream);
|
|
priv->own_stream = false;
|
|
priv->stream = NULL;
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
if (!priv->avfc)
|
|
avformat_free_context(avfc);
|
|
av_dict_free(&dopts);
|
|
|
|
return -1;
|
|
}
|
|
|
|
static bool demux_lavf_read_packet(struct demuxer *demux,
|
|
struct demux_packet **mp_pkt)
|
|
{
|
|
lavf_priv_t *priv = demux->priv;
|
|
|
|
AVPacket *pkt = &(AVPacket){0};
|
|
int r = av_read_frame(priv->avfc, pkt);
|
|
update_read_stats(demux);
|
|
if (r < 0) {
|
|
av_packet_unref(pkt);
|
|
if (r == AVERROR_EOF)
|
|
return false;
|
|
MP_WARN(demux, "error reading packet: %s.\n", av_err2str(r));
|
|
if (priv->retry_counter >= 10) {
|
|
MP_ERR(demux, "...treating it as fatal error.\n");
|
|
return false;
|
|
}
|
|
priv->retry_counter += 1;
|
|
return true;
|
|
}
|
|
priv->retry_counter = 0;
|
|
|
|
add_new_streams(demux);
|
|
update_metadata(demux);
|
|
|
|
assert(pkt->stream_index >= 0 && pkt->stream_index < priv->num_streams);
|
|
struct stream_info *info = priv->streams[pkt->stream_index];
|
|
struct sh_stream *stream = info->sh;
|
|
AVStream *st = priv->avfc->streams[pkt->stream_index];
|
|
|
|
if (!demux_stream_is_selected(stream)) {
|
|
av_packet_unref(pkt);
|
|
return true; // don't signal EOF if skipping a packet
|
|
}
|
|
|
|
struct demux_packet *dp = new_demux_packet_from_avpacket(pkt);
|
|
if (!dp) {
|
|
av_packet_unref(pkt);
|
|
return true;
|
|
}
|
|
|
|
if (priv->pcm_seek_hack == st && !priv->pcm_seek_hack_packet_size)
|
|
priv->pcm_seek_hack_packet_size = pkt->size;
|
|
|
|
dp->pts = mp_pts_from_av(pkt->pts, &st->time_base);
|
|
dp->dts = mp_pts_from_av(pkt->dts, &st->time_base);
|
|
dp->duration = pkt->duration * av_q2d(st->time_base);
|
|
dp->pos = pkt->pos;
|
|
dp->keyframe = pkt->flags & AV_PKT_FLAG_KEY;
|
|
if (pkt->flags & AV_PKT_FLAG_DISCARD)
|
|
MP_ERR(demux, "Edit lists are not correctly supported (FFmpeg issue).\n");
|
|
av_packet_unref(pkt);
|
|
|
|
if (priv->format_hack.clear_filepos)
|
|
dp->pos = -1;
|
|
|
|
dp->stream = stream->index;
|
|
|
|
if (priv->linearize_ts) {
|
|
dp->pts = MP_ADD_PTS(dp->pts, info->ts_offset);
|
|
dp->dts = MP_ADD_PTS(dp->dts, info->ts_offset);
|
|
|
|
double pts = MP_PTS_OR_DEF(dp->pts, dp->dts);
|
|
if (pts != MP_NOPTS_VALUE) {
|
|
if (dp->keyframe) {
|
|
if (pts < info->highest_pts) {
|
|
MP_WARN(demux, "Linearizing discontinuity: %f -> %f\n",
|
|
pts, info->highest_pts);
|
|
// Note: introduces a small discontinuity by a frame size.
|
|
double diff = info->highest_pts - pts;
|
|
dp->pts = MP_ADD_PTS(dp->pts, diff);
|
|
dp->dts = MP_ADD_PTS(dp->dts, diff);
|
|
pts += diff;
|
|
info->ts_offset += diff;
|
|
priv->any_ts_fixed = true;
|
|
}
|
|
info->last_key_pts = pts;
|
|
}
|
|
info->highest_pts = MP_PTS_MAX(info->highest_pts, pts);
|
|
}
|
|
}
|
|
|
|
if (st->event_flags & AVSTREAM_EVENT_FLAG_METADATA_UPDATED) {
|
|
st->event_flags = 0;
|
|
struct mp_tags *tags = talloc_zero(NULL, struct mp_tags);
|
|
mp_tags_copy_from_av_dictionary(tags, st->metadata);
|
|
double pts = MP_PTS_OR_DEF(dp->pts, dp->dts);
|
|
demux_stream_tags_changed(demux, stream, tags, pts);
|
|
}
|
|
|
|
*mp_pkt = dp;
|
|
return true;
|
|
}
|
|
|
|
static void demux_seek_lavf(demuxer_t *demuxer, double seek_pts, int flags)
|
|
{
|
|
lavf_priv_t *priv = demuxer->priv;
|
|
int avsflags = 0;
|
|
int64_t seek_pts_av = 0;
|
|
int seek_stream = -1;
|
|
|
|
if (priv->any_ts_fixed) {
|
|
// helpful message to piss of users
|
|
MP_WARN(demuxer, "Some timestamps returned by the demuxer were linearized. "
|
|
"A low level seek was requested; this won't work due to "
|
|
"restrictions in libavformat's API. You may have more "
|
|
"luck by enabling or enlarging the mpv cache.\n");
|
|
}
|
|
|
|
if (priv->linearize_ts < 0)
|
|
priv->linearize_ts = 0;
|
|
|
|
if (!(flags & SEEK_FORWARD))
|
|
avsflags = AVSEEK_FLAG_BACKWARD;
|
|
|
|
if (flags & SEEK_FACTOR) {
|
|
struct stream *s = priv->stream;
|
|
int64_t end = s ? stream_get_size(s) : -1;
|
|
if (end > 0 && demuxer->ts_resets_possible &&
|
|
!(priv->avif_flags & AVFMT_NO_BYTE_SEEK))
|
|
{
|
|
avsflags |= AVSEEK_FLAG_BYTE;
|
|
seek_pts_av = end * seek_pts;
|
|
} else if (priv->avfc->duration != 0 &&
|
|
priv->avfc->duration != AV_NOPTS_VALUE)
|
|
{
|
|
seek_pts_av = seek_pts * priv->avfc->duration;
|
|
}
|
|
} else {
|
|
if (!(flags & SEEK_FORWARD))
|
|
seek_pts -= priv->seek_delay;
|
|
seek_pts_av = seek_pts * AV_TIME_BASE;
|
|
}
|
|
|
|
// Hack to make wav seeking "deterministic". Without this, features like
|
|
// backward playback won't work.
|
|
if (priv->pcm_seek_hack && !priv->pcm_seek_hack_packet_size) {
|
|
// This might for example be the initial seek. Fuck it up like the
|
|
// bullshit it is.
|
|
AVPacket *pkt = av_packet_alloc();
|
|
MP_HANDLE_OOM(pkt);
|
|
if (av_read_frame(priv->avfc, pkt) >= 0)
|
|
priv->pcm_seek_hack_packet_size = pkt->size;
|
|
av_packet_free(&pkt);
|
|
add_new_streams(demuxer);
|
|
}
|
|
if (priv->pcm_seek_hack && priv->pcm_seek_hack_packet_size &&
|
|
!(avsflags & AVSEEK_FLAG_BYTE))
|
|
{
|
|
int samples = priv->pcm_seek_hack_packet_size /
|
|
priv->pcm_seek_hack->codecpar->block_align;
|
|
if (samples > 0) {
|
|
MP_VERBOSE(demuxer, "using bullshit libavformat PCM seek hack\n");
|
|
double pts = seek_pts_av / (double)AV_TIME_BASE;
|
|
seek_pts_av = pts / av_q2d(priv->pcm_seek_hack->time_base);
|
|
int64_t align = seek_pts_av % samples;
|
|
seek_pts_av -= align;
|
|
seek_stream = priv->pcm_seek_hack->index;
|
|
}
|
|
}
|
|
|
|
int r = av_seek_frame(priv->avfc, seek_stream, seek_pts_av, avsflags);
|
|
if (r < 0 && (avsflags & AVSEEK_FLAG_BACKWARD)) {
|
|
// When seeking before the beginning of the file, and seeking fails,
|
|
// try again without the backwards flag to make it seek to the
|
|
// beginning.
|
|
avsflags &= ~AVSEEK_FLAG_BACKWARD;
|
|
r = av_seek_frame(priv->avfc, seek_stream, seek_pts_av, avsflags);
|
|
}
|
|
|
|
if (r < 0) {
|
|
char buf[180];
|
|
av_strerror(r, buf, sizeof(buf));
|
|
MP_VERBOSE(demuxer, "Seek failed (%s)\n", buf);
|
|
}
|
|
|
|
update_read_stats(demuxer);
|
|
}
|
|
|
|
static void demux_lavf_switched_tracks(struct demuxer *demuxer)
|
|
{
|
|
select_tracks(demuxer, 0);
|
|
}
|
|
|
|
static void demux_close_lavf(demuxer_t *demuxer)
|
|
{
|
|
lavf_priv_t *priv = demuxer->priv;
|
|
if (priv) {
|
|
// This will be a dangling pointer; but see below.
|
|
AVIOContext *leaking = priv->avfc ? priv->avfc->pb : NULL;
|
|
avformat_close_input(&priv->avfc);
|
|
// The ffmpeg garbage breaks its own API yet again: hls.c will call
|
|
// io_open on the main playlist, but never calls io_close. This happens
|
|
// to work out for us (since we don't really use custom I/O), but it's
|
|
// still weird. Compensate.
|
|
if (priv->num_nested == 1 && priv->nested[0].id == leaking)
|
|
priv->num_nested = 0;
|
|
if (priv->num_nested) {
|
|
MP_WARN(demuxer, "Leaking %d nested connections (FFmpeg bug).\n",
|
|
priv->num_nested);
|
|
}
|
|
if (priv->pb)
|
|
av_freep(&priv->pb->buffer);
|
|
av_freep(&priv->pb);
|
|
for (int n = 0; n < priv->num_streams; n++) {
|
|
struct stream_info *info = priv->streams[n];
|
|
if (info->sh)
|
|
avcodec_parameters_free(&info->sh->codec->lav_codecpar);
|
|
}
|
|
if (priv->own_stream)
|
|
free_stream(priv->stream);
|
|
if (priv->av_opts)
|
|
av_dict_free(&priv->av_opts);
|
|
talloc_free(priv);
|
|
demuxer->priv = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
const demuxer_desc_t demuxer_desc_lavf = {
|
|
.name = "lavf",
|
|
.desc = "libavformat",
|
|
.read_packet = demux_lavf_read_packet,
|
|
.open = demux_open_lavf,
|
|
.close = demux_close_lavf,
|
|
.seek = demux_seek_lavf,
|
|
.switched_tracks = demux_lavf_switched_tracks,
|
|
};
|