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🎥 Command line media player
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C
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#ifndef MPLAYER_MP_CORE_H#define MPLAYER_MP_CORE_H
#include <stdbool.h>#include <pthread.h>
#include "osdep/atomic.h"
#include "libmpv/client.h"
#include "common/common.h"#include "filters/filter.h"#include "filters/f_output_chain.h"#include "options/options.h"#include "sub/osd.h"#include "audio/aframe.h"#include "video/mp_image.h"#include "video/out/vo.h"
// definitions used internally by the core player code
enum stop_play_reason { KEEP_PLAYING = 0, // playback of a file is actually going on // 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, or transient state when going to next PT_QUIT, // stop playback, quit player PT_ERROR, // play next playlist entry (due to an error)};
enum mp_osd_seek_info { OSD_SEEK_INFO_BAR = 1, OSD_SEEK_INFO_TEXT = 2, OSD_SEEK_INFO_CHAPTER_TEXT = 4, OSD_SEEK_INFO_CURRENT_FILE = 8,};
enum { // other constants 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, MPSEEK_BACKSTEP,};
enum seek_precision { // The following values are numerically sorted by increasing precision MPSEEK_DEFAULT = 0, MPSEEK_KEYFRAME, MPSEEK_EXACT, MPSEEK_VERY_EXACT,};
enum seek_flags { MPSEEK_FLAG_DELAY = 1 << 0, // give player chance to coalesce multiple seeks MPSEEK_FLAG_NOFLUSH = 1 << 1, // keeping remaining data for seamless loops};
struct seek_params { enum seek_type type; enum seek_precision exact; double amount; unsigned flags; // MPSEEK_FLAG_*};
enum video_sync { VS_DEFAULT = 0, VS_DISP_RESAMPLE, VS_DISP_RESAMPLE_VDROP, VS_DISP_RESAMPLE_NONE, VS_DISP_ADROP, VS_DISP_VDROP, VS_DISP_NONE, VS_NONE,};
#define VS_IS_DISP(x) ((x) == VS_DISP_RESAMPLE || \ (x) == VS_DISP_RESAMPLE_VDROP || \ (x) == VS_DISP_RESAMPLE_NONE || \ (x) == VS_DISP_ADROP || \ (x) == VS_DISP_VDROP || \ (x) == VS_DISP_NONE)
// Information about past video frames that have been sent to the VO.struct frame_info { double pts; double duration; // PTS difference to next frame double approx_duration; // possibly fixed/smoothed out duration double av_diff; // A/V diff at time of scheduling int num_vsyncs; // scheduled vsyncs, if using display-sync};
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;
int demuxer_id; // same as stream->demuxer_id. -1 if not set. int ff_index; // same as stream->ff_index, or 0.
char *title; bool default_track, forced_track, dependent_track; bool visual_impaired_track, hearing_impaired_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 bool no_auto_select; char *external_filename; bool auto_loaded;
struct demuxer *demuxer; // Invariant: !stream || stream->demuxer == demuxer struct sh_stream *stream;
// Current subtitle state (or cached state if selected==false). struct dec_sub *d_sub;
// Current decoding state (NULL if selected==false) struct mp_decoder_wrapper *dec;
// Where the decoded result goes to (one of them is not NULL if active) struct vo_chain *vo_c; struct ao_chain *ao_c; struct mp_pin *sink;
// For stream recording (remuxing mode). struct mp_recorder_sink *remux_sink;};
// Summarizes video filtering and output.struct vo_chain { struct mp_log *log;
struct mp_output_chain *filter;
struct vo *vo;
struct track *track; struct mp_pin *filter_src; struct mp_pin *dec_src;
// - video consists of a single picture, which should be shown only once // - do not sync audio to video in any way bool is_coverart; // - video consists of sparse still images bool is_sparse;
bool underrun; bool underrun_signaled;};
// Like vo_chain, for audio.struct ao_chain { struct mp_log *log;
bool spdif_passthrough, spdif_failed;
struct mp_output_chain *filter;
struct ao *ao; struct mp_audio_buffer *ao_buffer; double ao_resume_time;
// 1-element output frame queue. struct mp_aframe *output_frame; bool out_eof;
double last_out_pts;
struct track *track; struct mp_pin *filter_src; struct mp_pin *dec_src;
double delay;
bool underrun;};
/* 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_cli; 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_cancel *playback_abort; // Number of asynchronous tasks that still need to finish until MPContext // destruction is ok. It's implied that the async tasks call // mp_wakeup_core() each time this is decremented. // As using an atomic+wakeup would be racy, this is a normal integer, and // mp_dispatch_lock must be called to change it. int64_t outstanding_async;
struct mp_thread_pool *thread_pool; // for coarse I/O, often during loading
struct mp_log *statusline; struct osd_state *osd; char *term_osd_text; char *term_osd_status; char *term_osd_subs; char *term_osd_contents; char *last_window_title; struct voctrl_playback_state vo_playback_state;
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_msg_visible; double osd_msg_next_duration; double osd_last_update; bool osd_force_update, osd_idle_update; char *osd_msg_text; bool osd_show_pos; struct osd_progbar_state osd_progbar;
struct playlist *playlist; struct playlist_entry *playing; // currently playing file char *filename; // immutable copy of playing->filename (or NULL) char *stream_open_filename; enum stop_play_reason stop_play; bool playback_initialized; // playloop can be run/is running int error_playing;
// Return code to use with PT_QUIT int quit_custom_rc; bool has_quit_custom_rc; char **resume_defaults;
// Global file statistics int files_played; // played without issues (even if stopped by user) int files_errored; // played, but errors happened at one point int files_broken; // couldn't be played at all
// Current file statistics int64_t shown_vframes, shown_aframes;
struct demux_chapter *chapters; int num_chapters;
struct demuxer *demuxer; struct mp_tags *filtered_tags;
struct track **tracks; int num_tracks;
int64_t death_hack; // don't fucking ask, just don't
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 mp_filter *filter_root;
struct mp_filter *lavfi; char *lavfi_graph;
struct ao *ao; struct mp_aframe *ao_filter_fmt; // for weak gapless audio check struct ao_chain *ao_chain;
struct vo_chain *vo_chain;
struct vo *video_out; // next_frame[0] is the next frame, next_frame[1] the one after that. // The +1 is for adding 1 additional frame in backstep mode. struct mp_image *next_frames[VO_MAX_REQ_FRAMES + 1]; int num_next_frames; struct mp_image *saved_frame; // for hrseek_lastframe and hrseek_backstep
enum playback_status video_status, audio_status; bool restart_complete; int play_dir; // Factors to multiply with opts->playback_speed to get the total audio or // video speed (usually 1.0, but can be set to by the sync code). double speed_factor_v, speed_factor_a; // Redundant values set from opts->playback_speed and speed_factor_*. // update_playback_speed() updates them from the other fields. double audio_speed, video_speed; bool display_sync_active; int display_sync_drift_dir; // Timing error (in seconds) due to rounding on vsync boundaries double display_sync_error; double audio_drop_throttle; bool audio_drop_deprecated_msg; // Number of mistimed frames. int mistimed_frames_total; bool hrseek_active; // skip all data until hrseek_pts bool hrseek_lastframe; // drop everything until last frame reached bool hrseek_backstep; // go to frame before seek target double hrseek_pts; struct seek_params current_seek; bool ab_loop_clip; // clip to the "b" part of an A-B loop if available // 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 video frame. double delay; // AV sync: time in seconds until next frame should be shown double time_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; // 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 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; // Frame duration field from demuxer. Only used for duration of the last // video frame. double last_frame_duration; // Video PTS, or audio PTS if video has ended. double playback_pts; // audio stats only int64_t audio_stat_start; double written_audio;
int last_chapter;
// Past timestamps etc. // The newest frame is at index 0. struct frame_info *past_frames; int num_past_frames;
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;
struct seek_params seek;
// Can be temporarily set to an external audio track after seeks. Then it // must be seeked to the video position once video is done seeking. struct track *seek_slave;
/* 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;
bool paused; // internal pause state bool playback_active; // not paused, restarting, loading, unloading bool in_playloop;
// 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; bool demux_underrun; double cache_stop_time; int cache_buffer;
// 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 mp_recorder *recorder;
char *cached_watch_later_configdir;
struct screenshot_ctx *screenshot_ctx; struct command_ctx *command_ctx; struct encode_lavc_context *encode_lavc_ctx;
struct mp_ipc_ctx *ipc_ctx;
pthread_mutex_t abort_lock;
// --- The following fields are protected by abort_lock struct mp_abort_entry **abort_list; int num_abort_list; bool abort_all; // during final termination
// --- Owned by MPContext pthread_t open_thread; bool open_active; // open_thread is a valid thread handle, all setup atomic_bool open_done; // --- All fields below are immutable while open_active is true. // Otherwise, they're owned by MPContext. struct mp_cancel *open_cancel; char *open_url; char *open_format; int open_url_flags; bool open_for_prefetch; // --- All fields below are owned by open_thread, unless open_done was set // to true. struct demuxer *open_res_demuxer; int open_res_error;} MPContext;
// Contains information about an asynchronous work item, how it can be aborted,// and when. All fields are protected by MPContext.abort_lock.struct mp_abort_entry { // General conditions. bool coupled_to_playback; // trigger when playback is terminated // Actual trigger to abort the work. Pointer immutable, owner may access // without holding the abort_lock. struct mp_cancel *cancel; // For client API. struct mpv_handle *client; // non-NULL if done by a client API user int client_work_type; // client API type, e.h. MPV_EVENT_COMMAND_REPLY uint64_t client_work_id; // client API user reply_userdata value // (only valid if client_work_type set)};
// audio.cvoid reset_audio_state(struct MPContext *mpctx);void reinit_audio_chain(struct MPContext *mpctx);int init_audio_decoder(struct MPContext *mpctx, struct track *track);int reinit_audio_filters(struct MPContext *mpctx);double playing_audio_pts(struct MPContext *mpctx);void fill_audio_out_buffers(struct MPContext *mpctx);double written_audio_pts(struct MPContext *mpctx);void clear_audio_output_buffers(struct MPContext *mpctx);void update_playback_speed(struct MPContext *mpctx);void uninit_audio_out(struct MPContext *mpctx);void uninit_audio_chain(struct MPContext *mpctx);int init_audio_decoder(struct MPContext *mpctx, struct track *track);void reinit_audio_chain_src(struct MPContext *mpctx, struct track *track);void audio_update_volume(struct MPContext *mpctx);void audio_update_balance(struct MPContext *mpctx);void reload_audio_output(struct MPContext *mpctx);
// configfiles.cvoid 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);
// loadfile.cvoid mp_abort_playback_async(struct MPContext *mpctx);void mp_abort_add(struct MPContext *mpctx, struct mp_abort_entry *abort);void mp_abort_remove(struct MPContext *mpctx, struct mp_abort_entry *abort);void mp_abort_recheck_locked(struct MPContext *mpctx, struct mp_abort_entry *abort);void mp_abort_trigger_locked(struct MPContext *mpctx, struct mp_abort_entry *abort);void uninit_player(struct MPContext *mpctx, unsigned int mask);int mp_add_external_file(struct MPContext *mpctx, char *filename, enum stream_type filter, struct mp_cancel *cancel);#define FLAG_MARK_SELECTION 1void mp_switch_track(struct MPContext *mpctx, enum stream_type type, struct track *track, int flags);void mp_switch_track_n(struct MPContext *mpctx, int order, enum stream_type type, struct track *track, int flags);void mp_deselect_track(struct MPContext *mpctx, struct track *track);struct track *mp_track_by_tid(struct MPContext *mpctx, enum stream_type type, int tid);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, bool mutate);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);void print_track_list(struct MPContext *mpctx, const char *msg);void reselect_demux_stream(struct MPContext *mpctx, struct track *track);void prepare_playlist(struct MPContext *mpctx, struct playlist *pl);void autoload_external_files(struct MPContext *mpctx, struct mp_cancel *cancel);struct track *select_default_track(struct MPContext *mpctx, int order, enum stream_type type);void prefetch_next(struct MPContext *mpctx);void close_recorder(struct MPContext *mpctx);void close_recorder_and_error(struct MPContext *mpctx);void open_recorder(struct MPContext *mpctx, bool on_init);void update_lavfi_complex(struct MPContext *mpctx);
// main.cint mp_initialize(struct MPContext *mpctx, char **argv);struct MPContext *mp_create(void);void mp_destroy(struct MPContext *mpctx);void mp_print_version(struct mp_log *log, int always);void mp_update_logging(struct MPContext *mpctx, bool preinit);void issue_refresh_seek(struct MPContext *mpctx, enum seek_precision min_prec);
// misc.cdouble rel_time_to_abs(struct MPContext *mpctx, struct m_rel_time t);double get_play_end_pts(struct MPContext *mpctx);double get_play_start_pts(struct MPContext *mpctx);bool get_ab_loop_times(struct MPContext *mpctx, double t[2]);void merge_playlist_files(struct playlist *pl);void update_vo_playback_state(struct MPContext *mpctx);void update_window_title(struct MPContext *mpctx, bool force);void error_on_track(struct MPContext *mpctx, struct track *track);int stream_dump(struct MPContext *mpctx, const char *source_filename);double get_track_seek_offset(struct MPContext *mpctx, struct track *track);
// osd.cvoid set_osd_bar(struct MPContext *mpctx, int type, double min, double max, double neutral, double val);bool 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 term_osd_set_subs(struct MPContext *mpctx, const char *text);void get_current_osd_sym(struct MPContext *mpctx, char *buf, size_t buf_size);void set_osd_bar_chapters(struct MPContext *mpctx, int type);
// playloop.cvoid mp_wait_events(struct MPContext *mpctx);void mp_set_timeout(struct MPContext *mpctx, double sleeptime);void mp_wakeup_core(struct MPContext *mpctx);void mp_wakeup_core_cb(void *ctx);void mp_core_lock(struct MPContext *mpctx);void mp_core_unlock(struct MPContext *mpctx);void mp_process_input(struct MPContext *mpctx);double get_relative_time(struct MPContext *mpctx);void reset_playback_state(struct MPContext *mpctx);void set_pause_state(struct MPContext *mpctx, bool user_pause);void update_internal_pause_state(struct MPContext *mpctx);void update_core_idle_state(struct MPContext *mpctx);void add_step_frame(struct MPContext *mpctx, int dir);void queue_seek(struct MPContext *mpctx, enum seek_type type, double amount, enum seek_precision exact, int flags);double get_time_length(struct MPContext *mpctx);double get_start_time(struct MPContext *mpctx, int dir);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);int get_cache_buffering_percentage(struct MPContext *mpctx);void execute_queued_seek(struct MPContext *mpctx);void run_playloop(struct MPContext *mpctx);void mp_idle(struct MPContext *mpctx);void idle_loop(struct MPContext *mpctx);int handle_force_window(struct MPContext *mpctx, bool force);void seek_to_last_frame(struct MPContext *mpctx);void update_screensaver_state(struct MPContext *mpctx);void update_ab_loop_clip(struct MPContext *mpctx);
// scripting.cstruct mp_script_args { const struct mp_scripting *backend; struct MPContext *mpctx; struct mp_log *log; struct mpv_handle *client; const char *filename; const char *path;};struct mp_scripting { const char *name; // e.g. "lua script" const char *file_ext; // e.g. "lua" int (*load)(struct mp_script_args *args);};bool mp_load_scripts(struct MPContext *mpctx);void mp_load_builtin_scripts(struct MPContext *mpctx);int mp_load_user_script(struct MPContext *mpctx, const char *fname);
// sub.cvoid reset_subtitle_state(struct MPContext *mpctx);void reinit_sub(struct MPContext *mpctx, struct track *track);void reinit_sub_all(struct MPContext *mpctx);void uninit_sub(struct MPContext *mpctx, struct track *track);void uninit_sub_all(struct MPContext *mpctx);void update_osd_msg(struct MPContext *mpctx);bool update_subtitles(struct MPContext *mpctx, double video_pts);
// video.cint video_get_colors(struct vo_chain *vo_c, const char *item, int *value);int video_set_colors(struct vo_chain *vo_c, const char *item, int value);void reset_video_state(struct MPContext *mpctx);int init_video_decoder(struct MPContext *mpctx, struct track *track);void reinit_video_chain(struct MPContext *mpctx);void reinit_video_chain_src(struct MPContext *mpctx, struct track *track);int reinit_video_filters(struct MPContext *mpctx);void write_video(struct MPContext *mpctx);void mp_force_video_refresh(struct MPContext *mpctx);void uninit_video_out(struct MPContext *mpctx);void uninit_video_chain(struct MPContext *mpctx);double calc_average_frame_duration(struct MPContext *mpctx);int init_video_decoder(struct MPContext *mpctx, struct track *track);
#endif /* MPLAYER_MP_CORE_H */