mirror of
https://github.com/mpv-player/mpv.git
synced 2024-09-20 12:02:23 +02:00
c6d046414b
Remove the old implementation for these properties. It was never very good, often returned very innaccurate values or just 0, and was static even if the source was variable bitrate. Replace it with the implementation of "packet-video-bitrate". Mark the "packet-..." properties as deprecated. (The effective difference is different formatting, and returning the raw value in bits instead of kilobits.) Also extend the documentation a little. It appears at least some decoders (sipr?) need the AVCodecContext.bit_rate field set, so this one is still passed through.
1058 lines
35 KiB
C
1058 lines
35 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 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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#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 <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 "options/options.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 "stream/stream.h"
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#include "demux.h"
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#include "stheader.h"
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#include "options/m_option.h"
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#define INITIAL_PROBE_SIZE STREAM_BUFFER_SIZE
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#define PROBE_BUF_SIZE FFMIN(STREAM_MAX_BUFFER_SIZE, 2 * 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 probescore;
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float analyzeduration;
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int buffersize;
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int allow_mimetype;
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char *format;
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char *cryptokey;
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char **avopts;
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int hacks;
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int genptsmode;
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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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OPT_INTRANGE("probesize", probesize, 0, 32, INT_MAX),
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OPT_STRING("format", format, 0),
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OPT_FLOATRANGE("analyzeduration", analyzeduration, 0, 0, 3600),
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OPT_INTRANGE("buffersize", buffersize, 0, 1, 10 * 1024 * 1024,
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OPTDEF_INT(BIO_BUFFER_SIZE)),
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OPT_FLAG("allow-mimetype", allow_mimetype, 0),
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OPT_INTRANGE("probescore", probescore, 0, 1, AVPROBE_SCORE_MAX),
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OPT_STRING("cryptokey", cryptokey, 0),
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OPT_FLAG("hacks", hacks, 0),
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OPT_CHOICE("genpts-mode", genptsmode, 0,
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({"lavf", 1}, {"no", 0})),
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OPT_KEYVALUELIST("o", avopts, 0),
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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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.allow_mimetype = 1,
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.hacks = 1,
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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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},
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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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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; // export the native stream IDs
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bool fully_read : 1; // set demuxer.fully_read flag
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bool image_format : 1; // expected to contain exactly 1 frame
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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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};
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#define BLACKLIST(fmt) {fmt, .ignore = true}
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#define TEXTSUB(fmt) {fmt, .fully_read = true}
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#define IMAGEFMT(fmt) {fmt, .image_format = 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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{"mpeg", .use_stream_ids = true},
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{"mpegts", .use_stream_ids = 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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TEXTSUB("aqtitle"), TEXTSUB("ass"), 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("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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// Image demuxers ("<name>_pipe" is detected explicitly)
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IMAGEFMT("image2pipe"),
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{0}
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};
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typedef struct lavf_priv {
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char *filename;
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struct format_hack format_hack;
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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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int64_t last_pts;
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struct sh_stream **streams; // NULL for unknown streams
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int num_streams;
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int cur_program;
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char *mime_type;
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bool merge_track_metadata;
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} lavf_priv_t;
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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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struct stream *stream = demuxer->stream;
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int ret;
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ret = stream_read(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;
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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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struct stream *stream = demuxer->stream;
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int64_t current_pos;
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MP_TRACE(demuxer, "mp_seek(%p, %"PRId64", %d)\n", stream, pos, whence);
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if (whence == SEEK_END || whence == AVSEEK_SIZE) {
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int64_t end;
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if (stream_control(stream, STREAM_CTRL_GET_SIZE, &end) != STREAM_OK)
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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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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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struct stream *stream = demuxer->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_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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AVInputFormat *fmt = NULL;
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while ((fmt = av_iformat_next(fmt)))
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MP_INFO(demuxer, "%15s : %s\n", fmt->name, fmt->long_name);
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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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struct MPOpts *opts = demuxer->opts;
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struct demux_lavf_opts *lavfdopts = opts->demux_lavf;
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struct stream *s = demuxer->stream;
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lavf_priv_t *priv;
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assert(!demuxer->priv);
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demuxer->priv = talloc_zero(NULL, lavf_priv_t);
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priv = demuxer->priv;
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priv->filename = s->url;
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if (!priv->filename) {
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priv->filename = "mp:unknown";
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MP_WARN(demuxer, "Stream url is not set!\n");
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}
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priv->filename = remove_prefix(priv->filename, prefixes);
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char *avdevice_format = NULL;
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if (s->uncached_type == STREAMTYPE_AVDEVICE) {
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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 = demuxer->stream->mime_type;
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if (!lavfdopts->allow_mimetype || !mime_type)
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mime_type = "";
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AVInputFormat *forced_format = NULL;
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const char *format = lavfdopts->format;
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if (!format)
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format = s->lavf_type;
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if (!format)
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format = avdevice_format;
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if (format) {
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if (strcmp(format, "help") == 0) {
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list_formats(demuxer);
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return -1;
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}
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forced_format = av_find_input_format(format);
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if (!forced_format) {
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MP_FATAL(demuxer, "Unknown lavf format %s\n", format);
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return -1;
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}
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}
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AVProbeData avpd = {
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// Disable file-extension matching with normal checks
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.filename = check <= DEMUX_CHECK_REQUEST ? priv->filename : "",
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.buf_size = 0,
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.buf = av_mallocz(PROBE_BUF_SIZE + FF_INPUT_BUFFER_PADDING_SIZE),
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};
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if (!avpd.buf)
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return -1;
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bool final_probe = false;
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do {
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int score = 0;
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if (forced_format) {
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priv->avif = forced_format;
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score = AVPROBE_SCORE_MAX;
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} else {
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int nsize = av_clip(avpd.buf_size * 2, INITIAL_PROBE_SIZE,
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PROBE_BUF_SIZE);
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bstr buf = stream_peek(s, nsize);
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if (buf.len <= avpd.buf_size)
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final_probe = true;
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memcpy(avpd.buf, buf.start, buf.len);
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avpd.buf_size = buf.len;
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priv->avif = av_probe_input_format2(&avpd, avpd.buf_size > 0, &score);
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}
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if (priv->avif) {
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MP_VERBOSE(demuxer, "Found '%s' at score=%d size=%d%s.\n",
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priv->avif->name, score, avpd.buf_size,
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forced_format ? " (forced)" : "");
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for (int n = 0; format_hacks[n].ff_name; n++) {
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const struct format_hack *entry = &format_hacks[n];
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if (!lavfdopts->hacks)
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continue;
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if (!matches_avinputformat_name(priv, entry->ff_name))
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continue;
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if (entry->mime_type && strcasecmp(entry->mime_type, mime_type) != 0)
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continue;
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priv->format_hack = *entry;
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break;
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}
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if (score >= lavfdopts->probescore)
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break;
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if (priv->format_hack.probescore &&
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score >= priv->format_hack.probescore &&
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(!priv->format_hack.max_probe || final_probe))
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break;
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}
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priv->avif = NULL;
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priv->format_hack = (struct format_hack){0};
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} while (!final_probe);
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av_free(avpd.buf);
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if (priv->avif && !forced_format && priv->format_hack.ignore) {
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MP_VERBOSE(demuxer, "Format blacklisted.\n");
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priv->avif = NULL;
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}
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if (!priv->avif) {
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MP_VERBOSE(demuxer, "No format found, try lowering probescore or forcing the format.\n");
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return -1;
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}
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if (bstr_endswith0(bstr0(priv->avif->name), "_pipe")) {
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MP_VERBOSE(demuxer, "Assuming this is an image format.\n");
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priv->format_hack.image_format = true;
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}
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priv->avif_flags = priv->avif->flags | priv->format_hack.if_flags;
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demuxer->filetype = priv->avif->name;
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return 0;
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}
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static uint8_t char2int(char c)
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{
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if (c >= '0' && c <= '9') return c - '0';
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if (c >= 'a' && c <= 'f') return c - 'a' + 10;
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if (c >= 'A' && c <= 'F') return c - 'A' + 10;
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return 0;
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}
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static void parse_cryptokey(AVFormatContext *avfc, const char *str)
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{
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int len = strlen(str) / 2;
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uint8_t *key = av_mallocz(len);
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int i;
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avfc->keylen = len;
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avfc->key = key;
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for (i = 0; i < len; i++, str += 2)
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*key++ = (char2int(str[0]) << 4) | char2int(str[1]);
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}
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static void select_tracks(struct demuxer *demuxer, int start)
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{
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lavf_priv_t *priv = demuxer->priv;
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for (int n = start; n < priv->num_streams; n++) {
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struct sh_stream *stream = priv->streams[n];
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AVStream *st = priv->avfc->streams[n];
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bool selected = stream && demux_stream_is_selected(stream) &&
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!stream->attached_picture;
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st->discard = selected ? AVDISCARD_DEFAULT : AVDISCARD_ALL;
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}
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}
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static void export_replaygain(demuxer_t *demuxer, sh_audio_t *sh, AVStream *st)
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{
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for (int i = 0; i < st->nb_side_data; i++) {
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AVReplayGain *av_rgain;
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struct replaygain_data *rgain;
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AVPacketSideData *src_sd = &st->side_data[i];
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if (src_sd->type != AV_PKT_DATA_REPLAYGAIN)
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continue;
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av_rgain = (AVReplayGain*)src_sd->data;
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rgain = talloc_ptrtype(demuxer, rgain);
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rgain->track_gain = (av_rgain->track_gain != INT32_MIN) ?
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av_rgain->track_gain / 100000.0f : 0.0;
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rgain->track_peak = (av_rgain->track_peak != 0.0) ?
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av_rgain->track_peak / 100000.0f : 1.0;
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rgain->album_gain = (av_rgain->album_gain != INT32_MIN) ?
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av_rgain->album_gain / 100000.0f : 0.0;
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rgain->album_peak = (av_rgain->album_peak != 0.0) ?
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av_rgain->album_peak / 100000.0f : 1.0;
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sh->replaygain_data = rgain;
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}
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}
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// Return a dictionary entry as (decimal) integer.
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static int dict_get_decimal(AVDictionary *dict, const char *entry, int def)
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{
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AVDictionaryEntry *e = av_dict_get(dict, entry, NULL, 0);
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if (e && e->value) {
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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 void handle_stream(demuxer_t *demuxer, int i)
|
|
{
|
|
lavf_priv_t *priv = demuxer->priv;
|
|
AVFormatContext *avfc = priv->avfc;
|
|
AVStream *st = avfc->streams[i];
|
|
AVCodecContext *codec = st->codec;
|
|
struct sh_stream *sh = NULL;
|
|
|
|
switch (codec->codec_type) {
|
|
case AVMEDIA_TYPE_AUDIO: {
|
|
sh = new_sh_stream(demuxer, STREAM_AUDIO);
|
|
if (!sh)
|
|
break;
|
|
sh_audio_t *sh_audio = sh->audio;
|
|
|
|
sh->format = codec->codec_tag;
|
|
|
|
// probably unneeded
|
|
mp_chmap_set_unknown(&sh_audio->channels, codec->channels);
|
|
if (codec->channel_layout)
|
|
mp_chmap_from_lavc(&sh_audio->channels, codec->channel_layout);
|
|
sh_audio->samplerate = codec->sample_rate;
|
|
sh_audio->bitrate = codec->bit_rate;
|
|
|
|
export_replaygain(demuxer, sh_audio, st);
|
|
|
|
break;
|
|
}
|
|
case AVMEDIA_TYPE_VIDEO: {
|
|
sh = new_sh_stream(demuxer, STREAM_VIDEO);
|
|
if (!sh)
|
|
break;
|
|
sh_video_t *sh_video = sh->video;
|
|
|
|
if (st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
|
|
sh->attached_picture = new_demux_packet_from(st->attached_pic.data,
|
|
st->attached_pic.size);
|
|
if (sh->attached_picture) {
|
|
sh->attached_picture->pts = 0;
|
|
talloc_steal(sh, sh->attached_picture);
|
|
sh->attached_picture->keyframe = true;
|
|
}
|
|
}
|
|
|
|
sh->format = codec->codec_tag;
|
|
sh_video->disp_w = codec->width;
|
|
sh_video->disp_h = codec->height;
|
|
/* Try to make up some frame rate value, even if it's not reliable.
|
|
* FPS information is needed to support subtitle formats which base
|
|
* timing on frame numbers.
|
|
* Libavformat seems to report no "reliable" FPS value for AVI files,
|
|
* while they are typically constant enough FPS that the value this
|
|
* heuristic makes up works with subtitles in practice.
|
|
*/
|
|
double fps;
|
|
if (st->avg_frame_rate.num)
|
|
fps = av_q2d(st->avg_frame_rate);
|
|
else
|
|
fps = 1.0 / FFMAX(av_q2d(st->time_base),
|
|
av_q2d(st->codec->time_base) *
|
|
st->codec->ticks_per_frame);
|
|
sh_video->fps = fps;
|
|
if (priv->format_hack.image_format)
|
|
sh_video->fps = demuxer->opts->mf_fps;
|
|
if (st->sample_aspect_ratio.num)
|
|
sh_video->aspect = codec->width * st->sample_aspect_ratio.num
|
|
/ (float)(codec->height * st->sample_aspect_ratio.den);
|
|
else
|
|
sh_video->aspect = codec->width * codec->sample_aspect_ratio.num
|
|
/ (float)(codec->height * codec->sample_aspect_ratio.den);
|
|
|
|
uint8_t *sd = av_stream_get_side_data(st, AV_PKT_DATA_DISPLAYMATRIX, NULL);
|
|
if (sd)
|
|
sh_video->rotate = -av_display_rotation_get((uint32_t *)sd);
|
|
sh_video->rotate = ((sh_video->rotate % 360) + 360) % 360;
|
|
|
|
// This also applies to vfw-muxed mkv, but we can't detect these easily.
|
|
sh_video->avi_dts = matches_avinputformat_name(priv, "avi");
|
|
|
|
break;
|
|
}
|
|
case AVMEDIA_TYPE_SUBTITLE: {
|
|
sh_sub_t *sh_sub;
|
|
sh = new_sh_stream(demuxer, STREAM_SUB);
|
|
if (!sh)
|
|
break;
|
|
sh_sub = sh->sub;
|
|
|
|
if (codec->extradata_size) {
|
|
sh_sub->extradata = talloc_size(sh, codec->extradata_size);
|
|
memcpy(sh_sub->extradata, codec->extradata, codec->extradata_size);
|
|
sh_sub->extradata_len = 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_sub->frame_based = av_q2d(av_inv_q(codec->time_base));
|
|
} else {
|
|
// Older libavformat versions. If the FPS matches the microdvd
|
|
// reader's default, assume it uses frame based timing.
|
|
if (codec->time_base.num == 125 && codec->time_base.den == 2997)
|
|
sh_sub->frame_based = 23.976;
|
|
}
|
|
}
|
|
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, bstr0(filename), bstr0(mimetype),
|
|
(struct bstr){codec->extradata,
|
|
codec->extradata_size});
|
|
}
|
|
break;
|
|
}
|
|
default: ;
|
|
}
|
|
|
|
assert(priv->num_streams == i); // directly mapped
|
|
MP_TARRAY_APPEND(priv, priv->streams, priv->num_streams, sh);
|
|
|
|
if (sh) {
|
|
sh->ff_index = st->index;
|
|
sh->codec = mp_codec_from_av_codec_id(codec->codec_id);
|
|
sh->lav_headers = codec;
|
|
|
|
if (st->disposition & AV_DISPOSITION_DEFAULT)
|
|
sh->default_track = 1;
|
|
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);
|
|
AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
|
|
if (lang && lang->value)
|
|
sh->lang = talloc_strdup(sh, lang->value);
|
|
sh->hls_bitrate = dict_get_decimal(st->metadata, "variant_bitrate", 0);
|
|
if (!sh->title && sh->hls_bitrate > 0)
|
|
sh->title = talloc_asprintf(sh, "bitrate %d", sh->hls_bitrate);
|
|
sh->missing_timestamps = !!(priv->avif_flags & AVFMT_NOTIMESTAMPS);
|
|
}
|
|
|
|
select_tracks(demuxer, i);
|
|
demux_changed(demuxer, DEMUX_EVENT_STREAMS);
|
|
}
|
|
|
|
// 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_stream(demuxer, priv->num_streams);
|
|
}
|
|
|
|
static void update_metadata(demuxer_t *demuxer, AVPacket *pkt)
|
|
{
|
|
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_changed(demuxer, DEMUX_EVENT_METADATA);
|
|
}
|
|
if (priv->merge_track_metadata) {
|
|
for (int n = 0; n < priv->num_streams; n++) {
|
|
AVStream *st = priv->streams[n] ? priv->avfc->streams[n] : NULL;
|
|
if (st && st->event_flags & AVSTREAM_EVENT_FLAG_METADATA_UPDATED) {
|
|
mp_tags_copy_from_av_dictionary(demuxer->metadata, st->metadata);
|
|
st->event_flags = 0;
|
|
demux_changed(demuxer, DEMUX_EVENT_METADATA);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int interrupt_cb(void *ctx)
|
|
{
|
|
struct demuxer *demuxer = ctx;
|
|
return mp_cancel_test(demuxer->stream->cancel);
|
|
}
|
|
|
|
static int demux_open_lavf(demuxer_t *demuxer, enum demux_check check)
|
|
{
|
|
struct MPOpts *opts = demuxer->opts;
|
|
struct demux_lavf_opts *lavfdopts = opts->demux_lavf;
|
|
AVFormatContext *avfc;
|
|
AVDictionaryEntry *t = NULL;
|
|
float analyze_duration = 0;
|
|
int i;
|
|
|
|
if (lavf_check_file(demuxer, check) < 0)
|
|
return -1;
|
|
|
|
lavf_priv_t *priv = demuxer->priv;
|
|
if (!priv)
|
|
return -1;
|
|
|
|
avfc = avformat_alloc_context();
|
|
if (!avfc)
|
|
return -1;
|
|
|
|
if (lavfdopts->cryptokey)
|
|
parse_cryptokey(avfc, lavfdopts->cryptokey);
|
|
if (lavfdopts->genptsmode)
|
|
avfc->flags |= AVFMT_FLAG_GENPTS;
|
|
if (opts->index_mode != 1)
|
|
avfc->flags |= AVFMT_FLAG_IGNIDX;
|
|
|
|
#if LIBAVFORMAT_VERSION_MICRO >= 100
|
|
/* Keep side data as side data instead of mashing it into the packet
|
|
* stream.
|
|
* Note: Libav doesn't have this horrible insanity. */
|
|
av_opt_set(avfc, "fflags", "+keepside", 0);
|
|
#endif
|
|
|
|
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);
|
|
}
|
|
|
|
AVDictionary *dopts = NULL;
|
|
|
|
if ((priv->avif_flags & AVFMT_NOFILE) ||
|
|
demuxer->stream->type == STREAMTYPE_AVDEVICE ||
|
|
priv->format_hack.no_stream)
|
|
{
|
|
mp_setup_av_network_options(&dopts, demuxer->global, demuxer->log, opts);
|
|
// This might be incorrect.
|
|
demuxer->seekable = true;
|
|
} else {
|
|
void *buffer = av_malloc(lavfdopts->buffersize);
|
|
if (!buffer)
|
|
return -1;
|
|
priv->pb = avio_alloc_context(buffer, lavfdopts->buffersize, 0,
|
|
demuxer, mp_read, NULL, mp_seek);
|
|
if (!priv->pb) {
|
|
av_free(buffer);
|
|
return -1;
|
|
}
|
|
priv->pb->read_seek = mp_read_seek;
|
|
priv->pb->seekable = demuxer->seekable ? AVIO_SEEKABLE_NORMAL : 0;
|
|
avfc->pb = priv->pb;
|
|
if (stream_control(demuxer->stream, STREAM_CTRL_HAS_AVSEEK, NULL) > 0)
|
|
demuxer->seekable = true;
|
|
}
|
|
|
|
if (matches_avinputformat_name(priv, "rtsp")) {
|
|
const char *transport = NULL;
|
|
switch (opts->network_rtsp_transport) {
|
|
case 1: transport = "udp"; break;
|
|
case 2: transport = "tcp"; break;
|
|
case 3: transport = "http"; break;
|
|
}
|
|
if (transport)
|
|
av_dict_set(&dopts, "rtsp_transport", transport, 0);
|
|
}
|
|
|
|
avfc->interrupt_callback = (AVIOInterruptCB){
|
|
.callback = interrupt_cb,
|
|
.opaque = demuxer,
|
|
};
|
|
|
|
mp_set_avdict(&dopts, lavfdopts->avopts);
|
|
|
|
if (avformat_open_input(&avfc, priv->filename, priv->avif, &dopts) < 0) {
|
|
MP_ERR(demuxer, "avformat_open_input() failed\n");
|
|
av_dict_free(&dopts);
|
|
return -1;
|
|
}
|
|
|
|
mp_avdict_print_unset(demuxer->log, MSGL_V, dopts);
|
|
av_dict_free(&dopts);
|
|
|
|
priv->avfc = avfc;
|
|
if (avformat_find_stream_info(avfc, NULL) < 0) {
|
|
MP_ERR(demuxer, "av_find_stream_info() failed\n");
|
|
return -1;
|
|
}
|
|
|
|
MP_VERBOSE(demuxer, "avformat_find_stream_info() finished after %"PRId64
|
|
" bytes.\n", stream_tell(demuxer->stream));
|
|
|
|
for (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 ? bstr0(t->value) : bstr0(""),
|
|
c->start * av_q2d(c->time_base), i);
|
|
mp_tags_copy_from_av_dictionary(demuxer->chapters[index].metadata, c->metadata);
|
|
}
|
|
|
|
add_new_streams(demuxer);
|
|
|
|
// Often useful with OGG audio-only files, which have metadata in the audio
|
|
// track metadata instead of the main metadata.
|
|
if (demuxer->num_streams == 1) {
|
|
priv->merge_track_metadata = true;
|
|
for (int n = 0; n < priv->num_streams; n++) {
|
|
if (priv->streams[n])
|
|
mp_tags_copy_from_av_dictionary(demuxer->metadata, avfc->streams[n]->metadata);
|
|
}
|
|
}
|
|
|
|
mp_tags_copy_from_av_dictionary(demuxer->metadata, avfc->metadata);
|
|
update_metadata(demuxer, NULL);
|
|
|
|
demuxer->ts_resets_possible =
|
|
priv->avif_flags & (AVFMT_TS_DISCONT | AVFMT_NOTIMESTAMPS);
|
|
|
|
demuxer->start_time = priv->avfc->start_time == AV_NOPTS_VALUE ?
|
|
0 : (double)priv->avfc->start_time / AV_TIME_BASE;
|
|
|
|
demuxer->allow_refresh_seeks = matches_avinputformat_name(priv, "mp4");
|
|
demuxer->fully_read = priv->format_hack.fully_read;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int demux_lavf_fill_buffer(demuxer_t *demux)
|
|
{
|
|
lavf_priv_t *priv = demux->priv;
|
|
|
|
AVPacket *pkt = &(AVPacket){0};
|
|
int r = av_read_frame(priv->avfc, pkt);
|
|
if (r < 0) {
|
|
av_free_packet(pkt);
|
|
if (r == AVERROR(EAGAIN))
|
|
return 1;
|
|
if (r == AVERROR_EOF)
|
|
return 0;
|
|
MP_WARN(demux, "error reading packet.\n");
|
|
return -1;
|
|
}
|
|
|
|
add_new_streams(demux);
|
|
update_metadata(demux, pkt);
|
|
|
|
assert(pkt->stream_index >= 0 && pkt->stream_index < priv->num_streams);
|
|
struct sh_stream *stream = priv->streams[pkt->stream_index];
|
|
AVStream *st = priv->avfc->streams[pkt->stream_index];
|
|
|
|
if (!demux_stream_is_selected(stream)) {
|
|
av_free_packet(pkt);
|
|
return 1; // don't signal EOF if skipping a packet
|
|
}
|
|
|
|
struct demux_packet *dp = new_demux_packet_from_avpacket(pkt);
|
|
if (!dp) {
|
|
av_free_packet(pkt);
|
|
return 1;
|
|
}
|
|
|
|
if (pkt->pts != AV_NOPTS_VALUE)
|
|
dp->pts = pkt->pts * av_q2d(st->time_base);
|
|
if (pkt->dts != AV_NOPTS_VALUE)
|
|
dp->dts = pkt->dts * av_q2d(st->time_base);
|
|
dp->duration = pkt->duration * av_q2d(st->time_base);
|
|
if (pkt->convergence_duration > 0)
|
|
dp->duration = pkt->convergence_duration * av_q2d(st->time_base);
|
|
dp->pos = pkt->pos;
|
|
dp->keyframe = pkt->flags & AV_PKT_FLAG_KEY;
|
|
if (dp->pts != MP_NOPTS_VALUE) {
|
|
priv->last_pts = dp->pts * AV_TIME_BASE;
|
|
} else if (dp->dts != MP_NOPTS_VALUE) {
|
|
priv->last_pts = dp->dts * AV_TIME_BASE;
|
|
}
|
|
av_free_packet(pkt);
|
|
|
|
if (priv->format_hack.clear_filepos)
|
|
dp->pos = -1;
|
|
|
|
demux_add_packet(stream, dp);
|
|
return 1;
|
|
}
|
|
|
|
static void demux_seek_lavf(demuxer_t *demuxer, double rel_seek_secs, int flags)
|
|
{
|
|
lavf_priv_t *priv = demuxer->priv;
|
|
int avsflags = 0;
|
|
|
|
if (flags & SEEK_ABSOLUTE)
|
|
priv->last_pts = 0;
|
|
else if (rel_seek_secs < 0)
|
|
avsflags = AVSEEK_FLAG_BACKWARD;
|
|
|
|
if (flags & SEEK_FORWARD)
|
|
avsflags = 0;
|
|
else if (flags & SEEK_BACKWARD)
|
|
avsflags = AVSEEK_FLAG_BACKWARD;
|
|
|
|
if (flags & SEEK_FACTOR) {
|
|
struct stream *s = demuxer->stream;
|
|
int64_t end = 0;
|
|
stream_control(s, STREAM_CTRL_GET_SIZE, &end);
|
|
if (end > 0 && demuxer->ts_resets_possible &&
|
|
!(priv->avif_flags & AVFMT_NO_BYTE_SEEK))
|
|
{
|
|
avsflags |= AVSEEK_FLAG_BYTE;
|
|
priv->last_pts = end * rel_seek_secs;
|
|
} else if (priv->avfc->duration != 0 &&
|
|
priv->avfc->duration != AV_NOPTS_VALUE)
|
|
{
|
|
priv->last_pts = rel_seek_secs * priv->avfc->duration;
|
|
}
|
|
} else {
|
|
priv->last_pts += rel_seek_secs * AV_TIME_BASE;
|
|
}
|
|
|
|
int r;
|
|
if (!priv->avfc->iformat->read_seek2) {
|
|
// Normal seeking.
|
|
r = av_seek_frame(priv->avfc, -1, priv->last_pts, 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, -1, priv->last_pts, avsflags);
|
|
}
|
|
} else {
|
|
// av_seek_frame() won't work. Use "new" seeking API. We don't use this
|
|
// API by default, because there are some major issues.
|
|
// Set max_ts==ts, so that demuxing starts from an earlier position in
|
|
// the worst case.
|
|
r = avformat_seek_file(priv->avfc, -1, INT64_MIN,
|
|
priv->last_pts, priv->last_pts, avsflags);
|
|
// Similar issue as in the normal seeking codepath.
|
|
if (r < 0) {
|
|
r = avformat_seek_file(priv->avfc, -1, INT64_MIN,
|
|
priv->last_pts, INT64_MAX, avsflags);
|
|
}
|
|
}
|
|
if (r < 0) {
|
|
char buf[180];
|
|
av_strerror(r, buf, sizeof(buf));
|
|
MP_VERBOSE(demuxer, "Seek failed (%s)\n", buf);
|
|
}
|
|
}
|
|
|
|
static int demux_lavf_control(demuxer_t *demuxer, int cmd, void *arg)
|
|
{
|
|
lavf_priv_t *priv = demuxer->priv;
|
|
|
|
switch (cmd) {
|
|
case DEMUXER_CTRL_GET_TIME_LENGTH:
|
|
if (priv->avfc->duration == 0 || priv->avfc->duration == AV_NOPTS_VALUE)
|
|
return DEMUXER_CTRL_DONTKNOW;
|
|
|
|
*((double *)arg) = (double)priv->avfc->duration / AV_TIME_BASE;
|
|
return DEMUXER_CTRL_OK;
|
|
|
|
case DEMUXER_CTRL_SWITCHED_TRACKS:
|
|
{
|
|
select_tracks(demuxer, 0);
|
|
return DEMUXER_CTRL_OK;
|
|
}
|
|
case DEMUXER_CTRL_IDENTIFY_PROGRAM:
|
|
{
|
|
demux_program_t *prog = arg;
|
|
AVProgram *program;
|
|
int p, i;
|
|
int start;
|
|
|
|
add_new_streams(demuxer);
|
|
|
|
prog->vid = prog->aid = prog->sid = -2;
|
|
if (priv->avfc->nb_programs < 1)
|
|
return DEMUXER_CTRL_DONTKNOW;
|
|
|
|
if (prog->progid == -1) {
|
|
p = 0;
|
|
while (p < priv->avfc->nb_programs && priv->avfc->programs[p]->id != priv->cur_program)
|
|
p++;
|
|
p = (p + 1) % priv->avfc->nb_programs;
|
|
} else {
|
|
for (i = 0; i < priv->avfc->nb_programs; i++)
|
|
if (priv->avfc->programs[i]->id == prog->progid)
|
|
break;
|
|
if (i == priv->avfc->nb_programs)
|
|
return DEMUXER_CTRL_DONTKNOW;
|
|
p = i;
|
|
}
|
|
start = p;
|
|
redo:
|
|
prog->vid = prog->aid = prog->sid = -2;
|
|
program = priv->avfc->programs[p];
|
|
for (i = 0; i < program->nb_stream_indexes; i++) {
|
|
struct sh_stream *stream = priv->streams[program->stream_index[i]];
|
|
if (stream) {
|
|
switch (stream->type) {
|
|
case STREAM_VIDEO:
|
|
if (prog->vid == -2)
|
|
prog->vid = stream->demuxer_id;
|
|
break;
|
|
case STREAM_AUDIO:
|
|
if (prog->aid == -2)
|
|
prog->aid = stream->demuxer_id;
|
|
break;
|
|
case STREAM_SUB:
|
|
if (prog->sid == -2)
|
|
prog->sid = stream->demuxer_id;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (prog->progid == -1 && prog->vid == -2 && prog->aid == -2) {
|
|
p = (p + 1) % priv->avfc->nb_programs;
|
|
if (p == start)
|
|
return DEMUXER_CTRL_DONTKNOW;
|
|
goto redo;
|
|
}
|
|
priv->cur_program = prog->progid = program->id;
|
|
return DEMUXER_CTRL_OK;
|
|
}
|
|
case DEMUXER_CTRL_RESYNC:
|
|
/* NOTE:
|
|
*
|
|
* We actually want to call ff_read_frame_flush() here, but it is
|
|
* internal.
|
|
*
|
|
* This function call seems to do the same for now.
|
|
*
|
|
* Once ff_read_frame_flush() is exported in some way, change this to
|
|
* call the new API instead of relying on av_seek_frame() to do this
|
|
* for us.
|
|
*/
|
|
// avio_flush() is designed for write-only streams, and does the wrong
|
|
// thing when reading. Flush it manually instead.
|
|
stream_drop_buffers(demuxer->stream);
|
|
priv->avfc->pb->buf_ptr = priv->avfc->pb->buf_end = priv->avfc->pb->buffer;
|
|
priv->avfc->pb->pos = stream_tell(demuxer->stream);
|
|
av_seek_frame(priv->avfc, 0, stream_tell(demuxer->stream),
|
|
AVSEEK_FLAG_BYTE);
|
|
return DEMUXER_CTRL_OK;
|
|
default:
|
|
return DEMUXER_CTRL_NOTIMPL;
|
|
}
|
|
}
|
|
|
|
static void demux_close_lavf(demuxer_t *demuxer)
|
|
{
|
|
lavf_priv_t *priv = demuxer->priv;
|
|
if (priv) {
|
|
if (priv->avfc) {
|
|
av_freep(&priv->avfc->key);
|
|
avformat_close_input(&priv->avfc);
|
|
}
|
|
if (priv->pb)
|
|
av_freep(&priv->pb->buffer);
|
|
av_freep(&priv->pb);
|
|
talloc_free(priv);
|
|
demuxer->priv = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
const demuxer_desc_t demuxer_desc_lavf = {
|
|
.name = "lavf",
|
|
.desc = "libavformat",
|
|
.fill_buffer = demux_lavf_fill_buffer,
|
|
.open = demux_open_lavf,
|
|
.close = demux_close_lavf,
|
|
.seek = demux_seek_lavf,
|
|
.control = demux_lavf_control,
|
|
};
|