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fdbf437055
ffmpeg pretends that image attachments (such as contained in ID3v2 metadata) are video streams. It injects the attached pictures as packets into the packet stream received with av_read_frame(). Add the --audio-display option to allow configuring whether attached pictures should be displayed. The default behavior doesn't change (images are displayed). Identify video streams, that are actually image attachments, with "[P]" in the terminal output. Modify the default stream selection such that real video streams are preferred over attached pictures. (This is just for robustness; I do not know of any samples where images are added before actual video streams and could lead to bad default stream selection with the old code.)
305 lines
10 KiB
C
305 lines
10 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer 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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* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPLAYER_MP_CORE_H
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#define MPLAYER_MP_CORE_H
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#include <stdbool.h>
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#include "core/options.h"
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#include "sub/subreader.h"
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#include "sub/find_subfiles.h"
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#include "audio/mixer.h"
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#include "demux/demux.h"
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// definitions used internally by the core player code
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#define INITIALIZED_VO 1
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#define INITIALIZED_AO 2
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#define INITIALIZED_GETCH2 8
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#define INITIALIZED_SPUDEC 32
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#define INITIALIZED_STREAM 64
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#define INITIALIZED_DEMUXER 512
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#define INITIALIZED_ACODEC 1024
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#define INITIALIZED_VCODEC 2048
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#define INITIALIZED_SUB 4096
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#define INITIALIZED_ALL 0xFFFF
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enum stop_play_reason {
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KEEP_PLAYING = 0, // must be 0, numeric values of others do not matter
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AT_END_OF_FILE, // file has ended normally, prepare to play next
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PT_NEXT_ENTRY, // prepare to play next entry in playlist
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PT_CURRENT_ENTRY, // prepare to play mpctx->playlist->current
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PT_STOP, // stop playback, clear playlist
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PT_RESTART, // restart previous file
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PT_QUIT, // stop playback, quit player
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};
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enum exit_reason {
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EXIT_NONE,
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EXIT_QUIT,
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EXIT_EOF,
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EXIT_ERROR
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};
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struct timeline_part {
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double start;
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double source_start;
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struct demuxer *source;
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};
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struct chapter {
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double start;
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char *name;
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};
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enum mp_osd_seek_info {
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OSD_SEEK_INFO_BAR = 1,
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OSD_SEEK_INFO_TEXT = 2,
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OSD_SEEK_INFO_CHAPTER_TEXT = 4,
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OSD_SEEK_INFO_EDITION = 8,
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};
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struct track {
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enum stream_type type;
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// The type specific ID, also called aid (audio), sid (subs), vid (video).
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// For UI purposes only; this ID doesn't have anything to do with any
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// IDs coming from demuxers or container files.
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int user_tid;
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// Same as stream->demuxer_id. -1 if not set.
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int demuxer_id;
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char *title;
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bool default_track;
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bool attached_picture;
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char *lang;
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// If this track is from an external file (e.g. subtitle file).
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bool is_external;
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char *external_filename;
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// If the track's stream changes with the timeline (ordered chapters).
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bool under_timeline;
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// NULL if not backed by a demuxer (e.g. external subtitles).
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// Value can change if under_timeline==true.
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struct demuxer *demuxer;
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// Invariant: (!demuxer && !stream) || stream->demuxer == demuxer
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struct sh_stream *stream;
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// NOTE: demuxer subtitles, i.e. if stream!=NULL, do not use the following
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// fields. The data is stored in stream->sub this case.
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// External text subtitle using libass subtitle renderer.
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// The sh_sub is a dummy and doesn't belong to a demuxer.
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struct sh_sub *sh_sub;
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// External text subtitle using non-libass subtitle renderer.
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struct sub_data *subdata;
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};
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typedef struct MPContext {
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struct MPOpts opts;
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struct m_config *mconfig;
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struct mp_fifo *key_fifo;
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struct input_ctx *input;
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struct osd_state *osd;
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struct mp_osd_msg *osd_msg_stack;
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char *terminal_osd_text;
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subtitle subs; // subtitle list used when reading subtitles from demuxer
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int add_osd_seek_info; // bitfield of enum mp_osd_seek_info
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unsigned int osd_visible;
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int osd_function;
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struct playlist *playlist;
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char *filename; // currently playing file
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struct mp_resolve_result *resolve_result;
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enum stop_play_reason stop_play;
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unsigned int initialized_flags; // which subsystems have been initialized
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// Return code to use with PT_QUIT
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int quit_player_rc;
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struct demuxer **sources;
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int num_sources;
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struct timeline_part *timeline;
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int num_timeline_parts;
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int timeline_part;
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// NOTE: even if num_chapters==0, chapters being not NULL signifies presence
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// of chapter metadata
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struct chapter *chapters;
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int num_chapters;
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double video_offset;
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struct stream *stream;
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struct demuxer *demuxer;
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struct track **tracks;
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int num_tracks;
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// Selected tracks. NULL if no track selected.
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struct track *current_track[STREAM_TYPE_COUNT];
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struct sh_stream *sh[STREAM_TYPE_COUNT];
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struct sh_audio *sh_audio; // same as sh[STREAM_AUDIO]->audio
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struct sh_video *sh_video; // same as sh[STREAM_VIDEO]->video
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struct sh_sub *sh_sub; // same as sh[STREAM_SUB]->sub
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// Uses: accessing metadata (consider ordered chapters case, where the main
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// demuxer defines metadata), or special purpose demuxers like TV.
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struct demuxer *master_demuxer;
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mixer_t mixer;
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struct ao *ao;
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struct vo *video_out;
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/* We're starting playback from scratch or after a seek. Show first
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* video frame immediately and reinitialize sync. */
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bool restart_playback;
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/* After playback restart (above) or audio stream change, adjust audio
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* stream by cutting samples or adding silence at the beginning to make
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* audio playback position match video position. */
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bool syncing_audio;
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bool hrseek_active;
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bool hrseek_framedrop;
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double hrseek_pts;
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// AV sync: the next frame should be shown when the audio out has this
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// much (in seconds) buffered data left. Increased when more data is
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// written to the ao, decreased when moving to the next frame.
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// In the audio-only case used as a timer since the last seek
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// by the audio CPU usage meter.
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double delay;
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// AV sync: time until next frame should be shown
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float time_frame;
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// How long the last vo flip() call took. Used to adjust timing with
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// the goal of making flip() calls finish (rather than start) at the
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// specified time.
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float last_vo_flip_duration;
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// How much video timing has been changed to make it match the audio
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// timeline. Used for status line information only.
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double total_avsync_change;
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// A-V sync difference when last frame was displayed. Kept to display
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// the same value if the status line is updated at a time where no new
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// video frame is shown.
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double last_av_difference;
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/* timestamp of video frame currently visible on screen
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* (or at least queued to be flipped by VO) */
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double video_pts;
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double last_seek_pts;
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// As video_pts, but is not reset when seeking away. (For the very short
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// period of time until a new frame is decoded and shown.)
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double last_vo_pts;
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// used to prevent hanging in some error cases
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unsigned int start_timestamp;
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// Timestamp from the last time some timing functions read the
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// current time, in (occasionally wrapping) microseconds. Used
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// to turn a new time value to a delta from last time.
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unsigned int last_time;
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// Used to communicate the parameters of a seek between parts
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struct seek_params {
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enum seek_type {
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MPSEEK_NONE, MPSEEK_RELATIVE, MPSEEK_ABSOLUTE, MPSEEK_FACTOR
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} type;
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double amount;
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int exact; // -1 = disable, 0 = default, 1 = enable
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// currently not set by commands, only used internally by seek()
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int direction; // -1 = backward, 0 = default, 1 = forward
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} seek;
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/* Heuristic for relative chapter seeks: keep track which chapter
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* the user wanted to go to, even if we aren't exactly within the
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* boundaries of that chapter due to an inaccurate seek. */
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int last_chapter_seek;
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double last_chapter_pts;
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float begin_skip; ///< start time of the current skip while on edlout mode
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struct ass_library *ass_library;
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int file_format;
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int last_dvb_step;
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int dvbin_reopen;
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int paused;
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// step this many frames, then pause
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int step_frames;
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bool paused_for_cache;
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// Set after showing warning about decoding being too slow for realtime
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// playback rate. Used to avoid showing it multiple times.
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bool drop_message_shown;
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struct screenshot_ctx *screenshot_ctx;
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char *track_layout_hash;
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struct encode_lavc_context *encode_lavc_ctx;
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} MPContext;
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// should not be global
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extern FILE *edl_fd;
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// These appear in options list
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extern int forced_subs_only;
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void uninit_player(struct MPContext *mpctx, unsigned int mask);
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void reinit_audio_chain(struct MPContext *mpctx);
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void init_vo_spudec(struct MPContext *mpctx);
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double playing_audio_pts(struct MPContext *mpctx);
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struct track *mp_add_subtitles(struct MPContext *mpctx, char *filename,
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float fps, int noerr);
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int reinit_video_chain(struct MPContext *mpctx);
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void pause_player(struct MPContext *mpctx);
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void unpause_player(struct MPContext *mpctx);
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void add_step_frame(struct MPContext *mpctx);
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void queue_seek(struct MPContext *mpctx, enum seek_type type, double amount,
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int exact);
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int seek_chapter(struct MPContext *mpctx, int chapter, double *seek_pts);
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double get_time_length(struct MPContext *mpctx);
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double get_current_time(struct MPContext *mpctx);
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int get_percent_pos(struct MPContext *mpctx);
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int get_current_chapter(struct MPContext *mpctx);
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char *chapter_display_name(struct MPContext *mpctx, int chapter);
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char *chapter_name(struct MPContext *mpctx, int chapter);
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double chapter_start_time(struct MPContext *mpctx, int chapter);
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int get_chapter_count(struct MPContext *mpctx);
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void mp_switch_track(struct MPContext *mpctx, enum stream_type type,
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struct track *track);
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struct track *mp_track_by_tid(struct MPContext *mpctx, enum stream_type type,
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int tid);
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bool mp_remove_track(struct MPContext *mpctx, struct track *track);
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// timeline/tl_matroska.c
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void build_ordered_chapter_timeline(struct MPContext *mpctx);
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// timeline/tl_edl.c
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void build_edl_timeline(struct MPContext *mpctx);
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// timeline/tl_cue.c
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void build_cue_timeline(struct MPContext *mpctx);
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#endif /* MPLAYER_MP_CORE_H */
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