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4f984b987c
mpv/player/core.h
wm4 07aba86b37 audio: add a mode to insert silence on severe A/V desync 
This is probably a stupid idea, but it can't be denied that this
actually allows playing video without larger desync, even if video is
too slow.
2014-08-15 23:52:42 +02:00

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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPLAYER_MP_CORE_H
#define MPLAYER_MP_CORE_H
#include <stdbool.h>
#include "libmpv/client.h"
#include "common/common.h"
#include "options/options.h"
#include "sub/osd.h"
// definitions used internally by the core player code
#define INITIALIZED_VO 1
#define INITIALIZED_AO 2
#define INITIALIZED_PLAYBACK 16
#define INITIALIZED_LIBASS 32
#define INITIALIZED_STREAM 64
#define INITIALIZED_DEMUXER 512
#define INITIALIZED_ACODEC 1024
#define INITIALIZED_VCODEC 2048
#define INITIALIZED_SUB 4096
#define INITIALIZED_SUB2 8192
#define INITIALIZED_ALL 0xFFFF
enum stop_play_reason {
KEEP_PLAYING = 0, // must be 0, numeric values of others do not matter
AT_END_OF_FILE, // file has ended, prepare to play next
// also returned on unrecoverable playback errors
PT_NEXT_ENTRY, // prepare to play next entry in playlist
PT_CURRENT_ENTRY, // prepare to play mpctx->playlist->current
PT_STOP, // stop playback, clear playlist
PT_RESTART, // restart previous file
PT_RELOAD_DEMUXER, // restart playback, but keep stream open
PT_QUIT, // stop playback, quit player
};
enum exit_reason {
EXIT_NONE,
EXIT_QUIT,
EXIT_PLAYED,
EXIT_ERROR,
EXIT_NOTPLAYED,
EXIT_SOMENOTPLAYED
};
struct timeline_part {
double start;
double source_start;
struct demuxer *source;
};
struct chapter {
double start;
char *name;
};
enum mp_osd_seek_info {
OSD_SEEK_INFO_BAR = 1,
OSD_SEEK_INFO_TEXT = 2,
OSD_SEEK_INFO_CHAPTER_TEXT = 4,
OSD_SEEK_INFO_EDITION = 8,
};
enum {
// other constants
MAX_OSD_LEVEL = 3,
MAX_TERM_OSD_LEVEL = 1,
OSD_LEVEL_INVISIBLE = 4,
OSD_BAR_SEEK = 256,
MAX_NUM_VO_PTS = 100,
};
enum seek_type {
MPSEEK_NONE = 0,
MPSEEK_RELATIVE,
MPSEEK_ABSOLUTE,
MPSEEK_FACTOR,
};
struct track {
enum stream_type type;
// Currently used for decoding.
bool selected;
// The type specific ID, also called aid (audio), sid (subs), vid (video).
// For UI purposes only; this ID doesn't have anything to do with any
// IDs coming from demuxers or container files.
int user_tid;
// Same as stream->demuxer_id. -1 if not set.
int demuxer_id;
char *title;
bool default_track;
bool attached_picture;
char *lang;
// If this track is from an external file (e.g. subtitle file).
bool is_external;
bool no_default; // pretend it's not external for auto-selection
char *external_filename;
bool auto_loaded;
// If the track's stream changes with the timeline (ordered chapters).
bool under_timeline;
// Does not change with under_timeline, but it useless for most purposes.
struct sh_stream *original_stream;
// Value can change if under_timeline==true.
struct demuxer *demuxer;
// Invariant: !stream || stream->demuxer == demuxer
struct sh_stream *stream;
// For external subtitles, which are read fully on init. Do not attempt
// to read packets from them.
bool preloaded;
};
/* Note that playback can be paused, stopped, etc. at any time. While paused,
* playback restart is still active, because you want seeking to work even
* if paused.
* The main purpose of distinguishing these states is proper reinitialization
* of A/V sync.
*/
enum playback_status {
// code may compare status values numerically
STATUS_SYNCING, // seeking for a position to resume
STATUS_FILLING, // decoding more data (so you start with full buffers)
STATUS_READY, // buffers full, playback can be started any time
STATUS_PLAYING, // normal playback
STATUS_DRAINING, // decoding has ended; still playing out queued buffers
STATUS_EOF, // playback has ended, or is disabled
};
#define NUM_PTRACKS 2
typedef struct MPContext {
bool initialized;
bool is_cplayer;
bool autodetach;
struct mpv_global *global;
struct MPOpts *opts;
struct mp_log *log;
struct m_config *mconfig;
struct input_ctx *input;
struct mp_client_api *clients;
struct mp_dispatch_queue *dispatch;
struct mp_log *statusline;
struct osd_state *osd;
struct mp_osd_msg *osd_msg_stack;
char *term_osd_text;
char *term_osd_status;
char *term_osd_subs;
char *term_osd_contents;
char *last_window_title;
int add_osd_seek_info; // bitfield of enum mp_osd_seek_info
double osd_visible; // for the osd bar only
int osd_function;
double osd_function_visible;
double osd_last_update;
struct osd_progbar_state osd_progbar;
struct playlist *playlist;
char *filename; // currently playing file
struct mp_resolve_result *resolve_result;
enum stop_play_reason stop_play;
unsigned int initialized_flags; // which subsystems have been initialized
// Return code to use with PT_QUIT
enum exit_reason quit_player_rc;
int quit_custom_rc;
bool has_quit_custom_rc;
bool error_playing;
char **resume_defaults;
int64_t shown_vframes, shown_aframes;
struct demuxer **sources;
int num_sources;
struct timeline_part *timeline;
int num_timeline_parts;
int timeline_part;
struct chapter *chapters;
int num_chapters;
double video_offset;
struct stream *stream;
struct demuxer *demuxer;
struct track **tracks;
int num_tracks;
char *track_layout_hash;
// Selected tracks. NULL if no track selected.
// There can be NUM_PTRACKS of the same STREAM_TYPE selected at once.
// Currently, this is used for the secondary subtitle track only.
struct track *current_track[NUM_PTRACKS][STREAM_TYPE_COUNT];
struct dec_video *d_video;
struct dec_audio *d_audio;
struct dec_sub *d_sub[2];
// Uses: accessing metadata (consider ordered chapters case, where the main
// demuxer defines metadata), or special purpose demuxers like TV.
struct demuxer *master_demuxer;
struct demuxer *track_layout; // complication for ordered chapters
struct mixer *mixer;
struct ao *ao;
double ao_pts;
struct mp_audio *ao_decoder_fmt; // for weak gapless audio check
struct mp_audio_buffer *ao_buffer; // queued audio; passed to ao_play() later
struct vo *video_out;
// next_frame[0] is the next frame, next_frame[1] the one after that.
// Invariant: if next_frame[1] is set, next_frame[0] also is.
struct mp_image *next_frame[2];
enum playback_status video_status, audio_status;
bool restart_complete;
/* Set if audio should be timed to start with video frame after seeking,
* not set when e.g. playing cover art */
bool sync_audio_to_video;
bool hrseek_active;
bool hrseek_framedrop;
double hrseek_pts;
// AV sync: the next frame should be shown when the audio out has this
// much (in seconds) buffered data left. Increased when more data is
// written to the ao, decreased when moving to the next frame.
// In the audio-only case used as a timer since the last seek
// by the audio CPU usage meter.
double delay;
// AV sync: time until next frame should be shown
double time_frame;
// Optional/additional AV sync compensation if video is too slow.
double insert_silence;
// Set to true some time after a new frame has been shown, and it turns out
// that this frame was the last one before video ends.
bool playing_last_frame;
// How much video timing has been changed to make it match the audio
// timeline. Used for status line information only.
double total_avsync_change;
// Total number of dropped frames that were "approved" to be dropped.
// Actual dropping depends on --framedrop and decoder internals.
int drop_frame_cnt;
// Number of frames dropped in a row.
int dropped_frames;
// A-V sync difference when last frame was displayed. Kept to display
// the same value if the status line is updated at a time where no new
// video frame is shown.
double last_av_difference;
/* Timestamp of the latest image that was queued on the VO, but not yet
* to be flipped. */
double video_next_pts;
/* timestamp of video frame currently visible on screen
* (or at least queued to be flipped by VO) */
double video_pts;
double last_seek_pts;
// As video_pts, but is not reset when seeking away. (For the very short
// period of time until a new frame is decoded and shown.)
double last_vo_pts;
// Video PTS, or audio PTS if video has ended.
double playback_pts;
int last_chapter;
// History of video frames timestamps that were queued in the VO
// This includes even skipped frames during hr-seek
double vo_pts_history_pts[MAX_NUM_VO_PTS];
// Whether the PTS at vo_pts_history[n] is after a seek reset
uint64_t vo_pts_history_seek[MAX_NUM_VO_PTS];
uint64_t vo_pts_history_seek_ts;
uint64_t backstep_start_seek_ts;
bool backstep_active;
double audio_delay;
double next_heartbeat;
double last_idle_tick;
double next_cache_update;
double sleeptime; // number of seconds to sleep before next iteration
double mouse_timer;
unsigned int mouse_event_ts;
bool mouse_cursor_visible;
// used to prevent hanging in some error cases
double start_timestamp;
// Timestamp from the last time some timing functions read the
// current time, in microseconds.
// Used to turn a new time value to a delta from last time.
int64_t last_time;
// Used to communicate the parameters of a seek between parts
struct seek_params {
enum seek_type type;
double amount;
int exact; // -1 = disable, 0 = default, 1 = enable
bool immediate; // disable seek delay logic
} seek;
/* Heuristic for relative chapter seeks: keep track which chapter
* the user wanted to go to, even if we aren't exactly within the
* boundaries of that chapter due to an inaccurate seek. */
int last_chapter_seek;
double last_chapter_pts;
/* Subtitle renderer. This is separate, because we want to keep fonts
* loaded across ordered chapters, instead of reloading and rescanning
* them on each transition. (Both of these objects contain this state.)
*/
struct ass_renderer *ass_renderer;
struct ass_library *ass_library;
struct mp_log *ass_log;
int last_dvb_step;
bool paused;
// step this many frames, then pause
int step_frames;
// Counted down each frame, stop playback if 0 is reached. (-1 = disable)
int max_frames;
bool playing_msg_shown;
bool paused_for_cache;
// Set after showing warning about decoding being too slow for realtime
// playback rate. Used to avoid showing it multiple times.
bool drop_message_shown;
struct screenshot_ctx *screenshot_ctx;
struct command_ctx *command_ctx;
struct encode_lavc_context *encode_lavc_ctx;
struct mp_nav_state *nav_state;
} MPContext;
// audio.c
void reset_audio_state(struct MPContext *mpctx);
void reinit_audio_chain(struct MPContext *mpctx);
int reinit_audio_filters(struct MPContext *mpctx);
double playing_audio_pts(struct MPContext *mpctx);
void fill_audio_out_buffers(struct MPContext *mpctx, double endpts);
double written_audio_pts(struct MPContext *mpctx);
void clear_audio_output_buffers(struct MPContext *mpctx);
void clear_audio_decode_buffers(struct MPContext *mpctx);
// configfiles.c
void mp_parse_cfgfiles(struct MPContext *mpctx);
void mp_load_auto_profiles(struct MPContext *mpctx);
void mp_get_resume_defaults(struct MPContext *mpctx);
void mp_load_playback_resume(struct MPContext *mpctx, const char *file);
void mp_write_watch_later_conf(struct MPContext *mpctx);
struct playlist_entry *mp_check_playlist_resume(struct MPContext *mpctx,
struct playlist *playlist);
// discnav.c
void mp_nav_init(struct MPContext *mpctx);
void mp_nav_reset(struct MPContext *mpctx);
void mp_nav_destroy(struct MPContext *mpctx);
void mp_nav_user_input(struct MPContext *mpctx, char *command);
void mp_handle_nav(struct MPContext *mpctx);
int mp_nav_in_menu(struct MPContext *mpctx);
// loadfile.c
void uninit_player(struct MPContext *mpctx, unsigned int mask);
struct track *mp_add_subtitles(struct MPContext *mpctx, char *filename);
void mp_switch_track(struct MPContext *mpctx, enum stream_type type,
struct track *track);
void mp_switch_track_n(struct MPContext *mpctx, int order,
enum stream_type type, struct track *track);
void mp_deselect_track(struct MPContext *mpctx, struct track *track);
void mp_mark_user_track_selection(struct MPContext *mpctx, int order,
enum stream_type type);
struct track *mp_track_by_tid(struct MPContext *mpctx, enum stream_type type,
int tid);
bool timeline_set_part(struct MPContext *mpctx, int i, bool force);
double timeline_set_from_time(struct MPContext *mpctx, double pts, bool *need_reset);
void add_demuxer_tracks(struct MPContext *mpctx, struct demuxer *demuxer);
bool mp_remove_track(struct MPContext *mpctx, struct track *track);
struct playlist_entry *mp_next_file(struct MPContext *mpctx, int direction,
bool force);
void mp_set_playlist_entry(struct MPContext *mpctx, struct playlist_entry *e);
void mp_play_files(struct MPContext *mpctx);
void update_demuxer_properties(struct MPContext *mpctx);
// main.c
int mpv_main(int argc, char *argv[]);
int mp_initialize(struct MPContext *mpctx);
struct MPContext *mp_create(void);
void mp_destroy(struct MPContext *mpctx);
void mp_print_version(struct mp_log *log, int always);
// misc.c
double get_start_time(struct MPContext *mpctx);
double get_main_demux_pts(struct MPContext *mpctx);
double get_track_video_offset(struct MPContext *mpctx, struct track *track);
double rel_time_to_abs(struct MPContext *mpctx, struct m_rel_time t);
double get_play_end_pts(struct MPContext *mpctx);
double get_relative_time(struct MPContext *mpctx);
void merge_playlist_files(struct playlist *pl);
float mp_get_cache_percent(struct MPContext *mpctx);
bool mp_get_cache_idle(struct MPContext *mpctx);
void update_window_title(struct MPContext *mpctx, bool force);
void stream_dump(struct MPContext *mpctx);
// osd.c
void print_status(struct MPContext *mpctx);
void set_osd_bar(struct MPContext *mpctx, int type, const char* name,
double min, double max, double neutral, double val);
void set_osd_msg(struct MPContext *mpctx, int level, int time,
const char* fmt, ...) PRINTF_ATTRIBUTE(4,5);
void set_osd_function(struct MPContext *mpctx, int osd_function);
void set_osd_subtitle(struct MPContext *mpctx, const char *text);
// playloop.c
void reset_playback_state(struct MPContext *mpctx);
void pause_player(struct MPContext *mpctx);
void unpause_player(struct MPContext *mpctx);
void add_step_frame(struct MPContext *mpctx, int dir);
void queue_seek(struct MPContext *mpctx, enum seek_type type, double amount,
int exact, bool immediate);
bool mp_seek_chapter(struct MPContext *mpctx, int chapter);
double get_time_length(struct MPContext *mpctx);
double get_current_time(struct MPContext *mpctx);
double get_playback_time(struct MPContext *mpctx);
int get_percent_pos(struct MPContext *mpctx);
double get_current_pos_ratio(struct MPContext *mpctx, bool use_range);
int get_current_chapter(struct MPContext *mpctx);
char *chapter_display_name(struct MPContext *mpctx, int chapter);
char *chapter_name(struct MPContext *mpctx, int chapter);
double chapter_start_time(struct MPContext *mpctx, int chapter);
int get_chapter_count(struct MPContext *mpctx);
void execute_queued_seek(struct MPContext *mpctx);
void run_playloop(struct MPContext *mpctx);
void idle_loop(struct MPContext *mpctx);
void handle_force_window(struct MPContext *mpctx, bool reconfig);
void add_frame_pts(struct MPContext *mpctx, double pts);
// scripting.c
struct mp_scripting {
const char *file_ext; // e.g. "lua"
int (*load)(struct mpv_handle *client, const char *filename);
};
void mp_load_scripts(struct MPContext *mpctx);
// sub.c
void reset_subtitle_state(struct MPContext *mpctx);
void reset_subtitles(struct MPContext *mpctx, int order);
void uninit_subs(struct demuxer *demuxer);
void reinit_subs(struct MPContext *mpctx, int order);
void update_osd_msg(struct MPContext *mpctx);
void update_subtitles(struct MPContext *mpctx);
// timeline/tl_matroska.c
void build_ordered_chapter_timeline(struct MPContext *mpctx);
// timeline/tl_mpv_edl.c
void build_mpv_edl_timeline(struct MPContext *mpctx);
// timeline/tl_cue.c
void build_cue_timeline(struct MPContext *mpctx);
// video.c
void reset_video_state(struct MPContext *mpctx);
int reinit_video_chain(struct MPContext *mpctx);
int reinit_video_filters(struct MPContext *mpctx);
void write_video(struct MPContext *mpctx, double endpts);
void mp_force_video_refresh(struct MPContext *mpctx);
void update_fps(struct MPContext *mpctx);
#endif /* MPLAYER_MP_CORE_H */
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