/* * 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. */ #include #include #include #include #include #include "config.h" #include "talloc.h" #include "common/msg.h" #include "options/options.h" #include "common/common.h" #include "common/encode.h" #include "options/m_property.h" #include "common/playlist.h" #include "input/input.h" #include "osdep/timer.h" #include "audio/mixer.h" #include "audio/decode/dec_audio.h" #include "audio/filter/af.h" #include "audio/out/ao.h" #include "demux/demux.h" #include "stream/stream.h" #include "sub/osd.h" #include "video/filter/vf.h" #include "video/decode/dec_video.h" #include "video/out/vo.h" #include "core.h" #include "screenshot.h" #include "command.h" #define WAKEUP_PERIOD 0.5 static const char av_desync_help_text[] = "\n\n" " *************************************************\n" " **** Audio/Video desynchronisation detected! ****\n" " *************************************************\n\n" "This means either the audio or the video is played too slowly.\n" "Possible reasons, problems, workarounds:\n" "- Your system is simply too slow for this file.\n" " Transcode it to a lower bitrate file with tools like HandBrake.\n" "- Broken/buggy _audio_ driver.\n" " Experiment with different values for --autosync, 30 is a good start.\n" " If you have PulseAudio, try --ao=alsa .\n" "- Slow video output.\n" " Try a different -vo driver (-vo help for a list) or try -framedrop!\n" "- Playing a video file with --vo=opengl with higher FPS than the monitor.\n" " This is due to vsync limiting the framerate.\n" "- Playing from a slow network source.\n" " Download the file instead.\n" "- Try to find out whether audio or video is causing this by experimenting\n" " with --no-video and --no-audio.\n" "- If you swiched audio or video tracks, try seeking to force synchronization.\n" "If none of this helps you, file a bug report.\n\n"; void pause_player(struct MPContext *mpctx) { mp_notify_property(mpctx, "pause"); mpctx->opts->pause = 1; if (mpctx->video_out) vo_control(mpctx->video_out, VOCTRL_RESTORE_SCREENSAVER, NULL); if (mpctx->paused) return; mpctx->paused = true; mpctx->step_frames = 0; mpctx->time_frame -= get_relative_time(mpctx); mpctx->osd_function = 0; mpctx->paused_for_cache = false; if (mpctx->video_out && mpctx->d_video && mpctx->video_out->config_ok) vo_control(mpctx->video_out, VOCTRL_PAUSE, NULL); if (mpctx->ao && mpctx->d_audio) ao_pause(mpctx->ao); // pause audio, keep data if possible // Only print status if there's actually a file being played. if (mpctx->num_sources) print_status(mpctx); if (!mpctx->opts->quiet) mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_PAUSED\n"); } void unpause_player(struct MPContext *mpctx) { mp_notify_property(mpctx, "pause"); mpctx->opts->pause = 0; if (mpctx->video_out && mpctx->opts->stop_screensaver) vo_control(mpctx->video_out, VOCTRL_KILL_SCREENSAVER, NULL); if (!mpctx->paused) return; // Don't actually unpause while cache is loading. if (mpctx->paused_for_cache) return; mpctx->paused = false; mpctx->osd_function = 0; if (mpctx->ao && mpctx->d_audio) ao_resume(mpctx->ao); if (mpctx->video_out && mpctx->d_video && mpctx->video_out->config_ok) vo_control(mpctx->video_out, VOCTRL_RESUME, NULL); // resume video (void)get_relative_time(mpctx); // ignore time that passed during pause } static void draw_osd(struct MPContext *mpctx) { struct vo *vo = mpctx->video_out; mpctx->osd->vo_pts = mpctx->video_pts; vo_draw_osd(vo, mpctx->osd); } static bool redraw_osd(struct MPContext *mpctx) { struct vo *vo = mpctx->video_out; if (vo_redraw_frame(vo) < 0) return false; draw_osd(mpctx); vo_flip_page(vo, 0, -1); return true; } void add_step_frame(struct MPContext *mpctx, int dir) { if (!mpctx->d_video) return; if (dir > 0) { mpctx->step_frames += 1; unpause_player(mpctx); } else if (dir < 0) { if (!mpctx->backstep_active && !mpctx->hrseek_active) { mpctx->backstep_active = true; mpctx->backstep_start_seek_ts = mpctx->vo_pts_history_seek_ts; pause_player(mpctx); } } } static void seek_reset(struct MPContext *mpctx, bool reset_ao) { if (mpctx->d_video) { video_reset_decoding(mpctx->d_video); vo_seek_reset(mpctx->video_out); } if (mpctx->d_audio) { audio_reset_decoding(mpctx->d_audio); if (reset_ao) clear_audio_output_buffers(mpctx); } reset_subtitles(mpctx); mpctx->video_pts = MP_NOPTS_VALUE; mpctx->video_next_pts = MP_NOPTS_VALUE; mpctx->playing_last_frame = false; mpctx->last_frame_duration = 0; mpctx->delay = 0; mpctx->time_frame = 0; mpctx->restart_playback = true; mpctx->hrseek_active = false; mpctx->hrseek_framedrop = false; mpctx->total_avsync_change = 0; mpctx->drop_frame_cnt = 0; mpctx->dropped_frames = 0; mpctx->playback_pts = MP_NOPTS_VALUE; #if HAVE_ENCODING encode_lavc_discontinuity(mpctx->encode_lavc_ctx); #endif } // return -1 if seek failed (non-seekable stream?), 0 otherwise // timeline_fallthrough: true if used to explicitly switch timeline - in this // case, don't drop buffered AO audio data, so that // timeline segment transition is seemless static int mp_seek(MPContext *mpctx, struct seek_params seek, bool timeline_fallthrough) { struct MPOpts *opts = mpctx->opts; uint64_t prev_seek_ts = mpctx->vo_pts_history_seek_ts; if (!mpctx->demuxer) return -1; if (!mpctx->demuxer->seekable) { MP_ERR(mpctx, "Can't seek in this file.\n"); return -1; } if (mpctx->stop_play == AT_END_OF_FILE) mpctx->stop_play = KEEP_PLAYING; double hr_seek_offset = opts->hr_seek_demuxer_offset; // Always try to compensate for possibly bad demuxers in "special" // situations where we need more robustness from the hr-seek code, even // if the user doesn't use --hr-seek-demuxer-offset. // The value is arbitrary, but should be "good enough" in most situations. if (seek.exact > 1) hr_seek_offset = MPMAX(hr_seek_offset, 0.5); // arbitrary bool hr_seek = mpctx->demuxer->accurate_seek && opts->correct_pts; hr_seek &= seek.exact >= 0 && seek.type != MPSEEK_FACTOR; hr_seek &= (opts->hr_seek == 0 && seek.type == MPSEEK_ABSOLUTE) || opts->hr_seek > 0 || seek.exact > 0; if (seek.type == MPSEEK_FACTOR || seek.amount < 0 || (seek.type == MPSEEK_ABSOLUTE && seek.amount < mpctx->last_chapter_pts)) mpctx->last_chapter_seek = -2; if (seek.type == MPSEEK_FACTOR) { double len = get_time_length(mpctx); if (len > 0 && !mpctx->demuxer->ts_resets_possible) { seek.amount = seek.amount * len + get_start_time(mpctx); seek.type = MPSEEK_ABSOLUTE; } } if ((mpctx->demuxer->accurate_seek || mpctx->timeline) && seek.type == MPSEEK_RELATIVE) { seek.type = MPSEEK_ABSOLUTE; seek.direction = seek.amount > 0 ? 1 : -1; seek.amount += get_current_time(mpctx); } bool need_reset = false; double demuxer_amount = seek.amount; if (mpctx->timeline) { demuxer_amount = timeline_set_from_time(mpctx, seek.amount, &need_reset); if (demuxer_amount == -1) { assert(!need_reset); mpctx->stop_play = AT_END_OF_FILE; if (mpctx->d_audio && !timeline_fallthrough) { // Seek outside of the file -> clear audio from current position clear_audio_decode_buffers(mpctx); clear_audio_output_buffers(mpctx); } return -1; } } if (need_reset) { reinit_video_chain(mpctx); reinit_audio_chain(mpctx); reinit_subs(mpctx); } int demuxer_style = 0; switch (seek.type) { case MPSEEK_FACTOR: demuxer_style |= SEEK_ABSOLUTE | SEEK_FACTOR; break; case MPSEEK_ABSOLUTE: demuxer_style |= SEEK_ABSOLUTE; break; } if (hr_seek || seek.direction < 0) demuxer_style |= SEEK_BACKWARD; else if (seek.direction > 0) demuxer_style |= SEEK_FORWARD; if (hr_seek || opts->mkv_subtitle_preroll) demuxer_style |= SEEK_SUBPREROLL; if (hr_seek) demuxer_amount -= hr_seek_offset; int seekresult = demux_seek(mpctx->demuxer, demuxer_amount, demuxer_style); if (seekresult == 0) { if (need_reset) seek_reset(mpctx, !timeline_fallthrough); return -1; } // If audio or demuxer subs come from different files, seek them too: bool have_external_tracks = false; for (int type = 0; type < STREAM_TYPE_COUNT; type++) { struct track *track = mpctx->current_track[type]; have_external_tracks |= track && track->is_external && track->demuxer; } if (have_external_tracks) { double main_new_pos; if (seek.type == MPSEEK_ABSOLUTE) { main_new_pos = seek.amount - mpctx->video_offset; } else { main_new_pos = get_main_demux_pts(mpctx); } for (int type = 0; type < STREAM_TYPE_COUNT; type++) { struct track *track = mpctx->current_track[type]; if (track && track->is_external && track->demuxer) demux_seek(track->demuxer, main_new_pos, SEEK_ABSOLUTE); } } seek_reset(mpctx, !timeline_fallthrough); if (timeline_fallthrough) { // Important if video reinit happens. mpctx->vo_pts_history_seek_ts = prev_seek_ts; } else { mpctx->vo_pts_history_seek_ts++; mpctx->backstep_active = false; } /* Use the target time as "current position" for further relative * seeks etc until a new video frame has been decoded */ if (seek.type == MPSEEK_ABSOLUTE) { mpctx->video_pts = seek.amount; mpctx->last_seek_pts = seek.amount; } else mpctx->last_seek_pts = MP_NOPTS_VALUE; // The hr_seek==false case is for skipping frames with PTS before the // current timeline chapter start. It's not really known where the demuxer // level seek will end up, so the hrseek mechanism is abused to skip all // frames before chapter start by setting hrseek_pts to the chapter start. // It does nothing when the seek is inside of the current chapter, and // seeking past the chapter is handled elsewhere. if (hr_seek || mpctx->timeline) { mpctx->hrseek_active = true; mpctx->hrseek_framedrop = true; mpctx->hrseek_pts = hr_seek ? seek.amount : mpctx->timeline[mpctx->timeline_part].start; } mpctx->start_timestamp = mp_time_sec(); return 0; } void queue_seek(struct MPContext *mpctx, enum seek_type type, double amount, int exact) { struct seek_params *seek = &mpctx->seek; switch (type) { case MPSEEK_RELATIVE: if (seek->type == MPSEEK_FACTOR) return; // Well... not common enough to bother doing better seek->amount += amount; seek->exact = MPMAX(seek->exact, exact); if (seek->type == MPSEEK_NONE) seek->exact = exact; if (seek->type == MPSEEK_ABSOLUTE) return; if (seek->amount == 0) { *seek = (struct seek_params){ 0 }; return; } seek->type = MPSEEK_RELATIVE; return; case MPSEEK_ABSOLUTE: case MPSEEK_FACTOR: *seek = (struct seek_params) { .type = type, .amount = amount, .exact = exact, }; return; case MPSEEK_NONE: *seek = (struct seek_params){ 0 }; return; } abort(); } void execute_queued_seek(struct MPContext *mpctx) { if (mpctx->seek.type) { mp_seek(mpctx, mpctx->seek, false); mpctx->seek = (struct seek_params){0}; } } double get_time_length(struct MPContext *mpctx) { struct demuxer *demuxer = mpctx->demuxer; if (!demuxer) return 0; if (mpctx->timeline) return mpctx->timeline[mpctx->num_timeline_parts].start; double len = demuxer_get_time_length(demuxer); if (len >= 0) return len; // Unknown return 0; } /* If there are timestamps from stream level then use those (for example * DVDs can have consistent times there while the MPEG-level timestamps * reset). */ double get_current_time(struct MPContext *mpctx) { struct demuxer *demuxer = mpctx->demuxer; if (!demuxer) return 0; if (demuxer->stream_pts != MP_NOPTS_VALUE) return demuxer->stream_pts; if (mpctx->playback_pts != MP_NOPTS_VALUE) return mpctx->playback_pts; if (mpctx->last_seek_pts != MP_NOPTS_VALUE) return mpctx->last_seek_pts; return 0; } // Return playback position in 0.0-1.0 ratio, or -1 if unknown. double get_current_pos_ratio(struct MPContext *mpctx, bool use_range) { struct demuxer *demuxer = mpctx->demuxer; if (!demuxer) return -1; double ans = -1; double start = get_start_time(mpctx); double len = get_time_length(mpctx); if (use_range) { double startpos = rel_time_to_abs(mpctx, mpctx->opts->play_start, MP_NOPTS_VALUE); double endpos = get_play_end_pts(mpctx); if (endpos == MP_NOPTS_VALUE || endpos > start + len) endpos = start + len; if (startpos == MP_NOPTS_VALUE || startpos < start) startpos = start; if (endpos < startpos) endpos = startpos; start = startpos; len = endpos - startpos; } double pos = get_current_time(mpctx); if (len > 0 && !demuxer->ts_resets_possible) { ans = MPCLAMP((pos - start) / len, 0, 1); } else { struct stream *s = demuxer->stream; int64_t size = s->end_pos - s->start_pos; int64_t fpos = demuxer->filepos >= 0 ? demuxer->filepos : stream_tell(demuxer->stream); if (size > 0) ans = MPCLAMP((double)(fpos - s->start_pos) / size, 0, 1); } if (use_range) { if (mpctx->opts->play_frames > 0) ans = MPMAX(ans, 1.0 - mpctx->max_frames / (double) mpctx->opts->play_frames); } return ans; } int get_percent_pos(struct MPContext *mpctx) { int pos = get_current_pos_ratio(mpctx, false) * 100; return MPCLAMP(pos, 0, 100); } // -2 is no chapters, -1 is before first chapter int get_current_chapter(struct MPContext *mpctx) { double current_pts = get_current_time(mpctx); if (mpctx->chapters) { int i; for (i = 1; i < mpctx->num_chapters; i++) if (current_pts < mpctx->chapters[i].start) break; return MPMAX(mpctx->last_chapter_seek, i - 1); } if (mpctx->master_demuxer) return MPMAX(mpctx->last_chapter_seek, demuxer_get_current_chapter(mpctx->master_demuxer, current_pts)); return -2; } char *chapter_display_name(struct MPContext *mpctx, int chapter) { char *name = chapter_name(mpctx, chapter); char *dname = name; if (name) { dname = talloc_asprintf(NULL, "(%d) %s", chapter + 1, name); } else if (chapter < -1) { dname = talloc_strdup(NULL, "(unavailable)"); } else { int chapter_count = get_chapter_count(mpctx); if (chapter_count <= 0) dname = talloc_asprintf(NULL, "(%d)", chapter + 1); else dname = talloc_asprintf(NULL, "(%d) of %d", chapter + 1, chapter_count); } if (dname != name) talloc_free(name); return dname; } // returns NULL if chapter name unavailable char *chapter_name(struct MPContext *mpctx, int chapter) { if (mpctx->chapters) { if (chapter < 0 || chapter >= mpctx->num_chapters) return NULL; return talloc_strdup(NULL, mpctx->chapters[chapter].name); } if (mpctx->master_demuxer) return demuxer_chapter_name(mpctx->master_demuxer, chapter); return NULL; } // returns the start of the chapter in seconds (-1 if unavailable) double chapter_start_time(struct MPContext *mpctx, int chapter) { if (chapter == -1) return get_start_time(mpctx); if (mpctx->chapters) return mpctx->chapters[chapter].start; if (mpctx->master_demuxer) return demuxer_chapter_time(mpctx->master_demuxer, chapter); return -1; } int get_chapter_count(struct MPContext *mpctx) { if (mpctx->chapters) return mpctx->num_chapters; if (mpctx->master_demuxer) return demuxer_chapter_count(mpctx->master_demuxer); return 0; } // Seek to a given chapter. Tries to queue the seek, but might seek immediately // in some cases. Returns success, no matter if seek is queued or immediate. bool mp_seek_chapter(struct MPContext *mpctx, int chapter) { int num = get_chapter_count(mpctx); if (num == 0) return false; if (chapter < -1 || chapter >= num) return false; mpctx->last_chapter_seek = -2; double pts; if (chapter == -1) { pts = get_start_time(mpctx); goto do_seek; } else if (mpctx->chapters) { pts = mpctx->chapters[chapter].start; goto do_seek; } else if (mpctx->master_demuxer) { int res = demuxer_seek_chapter(mpctx->master_demuxer, chapter, &pts); if (res >= 0) { if (pts == -1) { // for DVD/BD - seek happened via stream layer seek_reset(mpctx, true); mpctx->seek = (struct seek_params){0}; return true; } chapter = res; goto do_seek; } } return false; do_seek: queue_seek(mpctx, MPSEEK_ABSOLUTE, pts, 0); mpctx->last_chapter_seek = chapter; mpctx->last_chapter_pts = pts; return true; } static void update_avsync(struct MPContext *mpctx) { if (!mpctx->d_audio || !mpctx->d_video) return; double a_pos = playing_audio_pts(mpctx); mpctx->last_av_difference = a_pos - mpctx->video_pts - mpctx->audio_delay; if (mpctx->time_frame > 0) mpctx->last_av_difference += mpctx->time_frame * mpctx->opts->playback_speed; if (a_pos == MP_NOPTS_VALUE || mpctx->video_pts == MP_NOPTS_VALUE) mpctx->last_av_difference = MP_NOPTS_VALUE; if (mpctx->last_av_difference > 0.5 && mpctx->drop_frame_cnt > 50 && !mpctx->drop_message_shown) { MP_WARN(mpctx, "%s", av_desync_help_text); mpctx->drop_message_shown = true; } } /* Modify video timing to match the audio timeline. There are two main * reasons this is needed. First, video and audio can start from different * positions at beginning of file or after a seek (MPlayer starts both * immediately even if they have different pts). Second, the file can have * audio timestamps that are inconsistent with the duration of the audio * packets, for example two consecutive timestamp values differing by * one second but only a packet with enough samples for half a second * of playback between them. */ static void adjust_sync(struct MPContext *mpctx, double frame_time) { struct MPOpts *opts = mpctx->opts; if (!mpctx->d_audio || mpctx->syncing_audio) return; double a_pts = written_audio_pts(mpctx) - mpctx->delay; double v_pts = mpctx->video_next_pts; double av_delay = a_pts - v_pts; // Try to sync vo_flip() so it will *finish* at given time av_delay += mpctx->last_vo_flip_duration; av_delay -= mpctx->audio_delay; // This much pts difference is desired double change = av_delay * 0.1; double max_change = opts->default_max_pts_correction >= 0 ? opts->default_max_pts_correction : frame_time * 0.1; if (change < -max_change) change = -max_change; else if (change > max_change) change = max_change; mpctx->delay += change; mpctx->total_avsync_change += change; } static bool handle_osd_redraw(struct MPContext *mpctx) { if (!mpctx->video_out || !mpctx->video_out->config_ok) return false; bool want_redraw = vo_get_want_redraw(mpctx->video_out); if (mpctx->video_out->driver->draw_osd) want_redraw |= mpctx->osd->want_redraw; mpctx->osd->want_redraw = false; if (want_redraw) { if (redraw_osd(mpctx)) return true; } return false; } static void handle_metadata_update(struct MPContext *mpctx) { if (mp_time_sec() > mpctx->last_metadata_update + 2) { demux_info_update(mpctx->demuxer); mpctx->last_metadata_update = mp_time_sec(); } } static void handle_pause_on_low_cache(struct MPContext *mpctx) { struct MPOpts *opts = mpctx->opts; int cache = mp_get_cache_percent(mpctx); bool idle = mp_get_cache_idle(mpctx); if (mpctx->paused && mpctx->paused_for_cache) { if (cache < 0 || cache >= opts->stream_cache_min_percent || idle) { mpctx->paused_for_cache = false; if (!opts->pause) unpause_player(mpctx); } } else { if (cache >= 0 && cache <= opts->stream_cache_pause && !idle && opts->stream_cache_pause < opts->stream_cache_min_percent) { bool prev_paused_user = opts->pause; pause_player(mpctx); mpctx->paused_for_cache = true; opts->pause = prev_paused_user; } } } static void handle_heartbeat_cmd(struct MPContext *mpctx) { struct MPOpts *opts = mpctx->opts; if (opts->heartbeat_cmd && !mpctx->paused) { double now = mp_time_sec(); if (now - mpctx->last_heartbeat > opts->heartbeat_interval) { mpctx->last_heartbeat = now; system(opts->heartbeat_cmd); } } } static void handle_cursor_autohide(struct MPContext *mpctx) { struct MPOpts *opts = mpctx->opts; struct vo *vo = mpctx->video_out; if (!vo) return; bool mouse_cursor_visible = mpctx->mouse_cursor_visible; unsigned mouse_event_ts = mp_input_get_mouse_event_counter(mpctx->input); if (mpctx->mouse_event_ts != mouse_event_ts) { mpctx->mouse_event_ts = mouse_event_ts; mpctx->mouse_timer = mp_time_sec() + opts->cursor_autohide_delay / 1000.0; mouse_cursor_visible = true; } if (mp_time_sec() >= mpctx->mouse_timer) mouse_cursor_visible = false; if (opts->cursor_autohide_delay == -1) mouse_cursor_visible = true; if (opts->cursor_autohide_delay == -2) mouse_cursor_visible = false; if (opts->cursor_autohide_fs && !opts->vo.fullscreen) mouse_cursor_visible = true; if (mouse_cursor_visible != mpctx->mouse_cursor_visible) vo_control(vo, VOCTRL_SET_CURSOR_VISIBILITY, &mouse_cursor_visible); mpctx->mouse_cursor_visible = mouse_cursor_visible; } static void handle_input_and_seek_coalesce(struct MPContext *mpctx) { mp_flush_events(mpctx); mp_cmd_t *cmd; while ((cmd = mp_input_get_cmd(mpctx->input, 0, 1)) != NULL) { /* Allow running consecutive seek commands to combine them, * but execute the seek before running other commands. * If the user seeks continuously (keeps arrow key down) * try to finish showing a frame from one location before doing * another seek (which could lead to unchanging display). */ if ((mpctx->seek.type && cmd->id != MP_CMD_SEEK) || (mpctx->restart_playback && cmd->id == MP_CMD_SEEK && mp_time_sec() - mpctx->start_timestamp < 0.3)) break; cmd = mp_input_get_cmd(mpctx->input, 0, 0); run_command(mpctx, cmd); mp_cmd_free(cmd); if (mpctx->stop_play) break; } } void add_frame_pts(struct MPContext *mpctx, double pts) { if (pts == MP_NOPTS_VALUE || mpctx->hrseek_framedrop) { mpctx->vo_pts_history_seek_ts++; // mark discontinuity return; } for (int n = MAX_NUM_VO_PTS - 1; n >= 1; n--) { mpctx->vo_pts_history_seek[n] = mpctx->vo_pts_history_seek[n - 1]; mpctx->vo_pts_history_pts[n] = mpctx->vo_pts_history_pts[n - 1]; } mpctx->vo_pts_history_seek[0] = mpctx->vo_pts_history_seek_ts; mpctx->vo_pts_history_pts[0] = pts; } static double find_previous_pts(struct MPContext *mpctx, double pts) { for (int n = 0; n < MAX_NUM_VO_PTS - 1; n++) { if (pts == mpctx->vo_pts_history_pts[n] && mpctx->vo_pts_history_seek[n] != 0 && mpctx->vo_pts_history_seek[n] == mpctx->vo_pts_history_seek[n + 1]) { return mpctx->vo_pts_history_pts[n + 1]; } } return MP_NOPTS_VALUE; } static double get_last_frame_pts(struct MPContext *mpctx) { if (mpctx->vo_pts_history_seek[0] == mpctx->vo_pts_history_seek_ts) return mpctx->vo_pts_history_pts[0]; return MP_NOPTS_VALUE; } static void handle_backstep(struct MPContext *mpctx) { if (!mpctx->backstep_active) return; double current_pts = mpctx->last_vo_pts; mpctx->backstep_active = false; bool demuxer_ok = mpctx->demuxer && mpctx->demuxer->accurate_seek; if (demuxer_ok && mpctx->d_video && current_pts != MP_NOPTS_VALUE) { double seek_pts = find_previous_pts(mpctx, current_pts); if (seek_pts != MP_NOPTS_VALUE) { queue_seek(mpctx, MPSEEK_ABSOLUTE, seek_pts, 2); } else { double last = get_last_frame_pts(mpctx); if (last != MP_NOPTS_VALUE && last >= current_pts && mpctx->backstep_start_seek_ts != mpctx->vo_pts_history_seek_ts) { MP_ERR(mpctx, "Backstep failed.\n"); queue_seek(mpctx, MPSEEK_ABSOLUTE, current_pts, 2); } else if (!mpctx->hrseek_active) { MP_VERBOSE(mpctx, "Start backstep indexing.\n"); // Force it to index the video up until current_pts. // The whole point is getting frames _before_ that PTS, // so apply an arbitrary offset. (In theory the offset // has to be large enough to reach the previous frame.) mp_seek(mpctx, (struct seek_params){ .type = MPSEEK_ABSOLUTE, .amount = current_pts - 1.0, }, false); // Don't leave hr-seek mode. If all goes right, hr-seek // mode is cancelled as soon as the frame before // current_pts is found during hr-seeking. // Note that current_pts should be part of the index, // otherwise we can't find the previous frame, so set the // seek target an arbitrary amount of time after it. if (mpctx->hrseek_active) { mpctx->hrseek_pts = current_pts + 10.0; mpctx->hrseek_framedrop = false; mpctx->backstep_active = true; } } else { mpctx->backstep_active = true; } } } } static void handle_sstep(struct MPContext *mpctx) { struct MPOpts *opts = mpctx->opts; if (opts->step_sec > 0 && !mpctx->stop_play && !mpctx->paused && !mpctx->restart_playback) { set_osd_function(mpctx, OSD_FFW); queue_seek(mpctx, MPSEEK_RELATIVE, opts->step_sec, 0); } } static void handle_keep_open(struct MPContext *mpctx) { struct MPOpts *opts = mpctx->opts; if (opts->keep_open && mpctx->stop_play == AT_END_OF_FILE) { mpctx->stop_play = KEEP_PLAYING; mpctx->playback_pts = mpctx->last_vo_pts; pause_player(mpctx); } } // Execute a forceful refresh of the VO window, if it hasn't had a valid frame // for a while. The problem is that a VO with no valid frame (vo->hasframe==0) // doesn't redraw video and doesn't OSD interaction. So screw it, hard. void handle_force_window(struct MPContext *mpctx, bool reconfig) { // Don't interfere with real video playback if (mpctx->d_video) return; struct vo *vo = mpctx->video_out; if (!vo) return; if (!vo->config_ok || reconfig) { MP_INFO(mpctx, "Creating non-video VO window.\n"); // Pick whatever works int config_format = 0; for (int fmt = IMGFMT_START; fmt < IMGFMT_END; fmt++) { if (vo->driver->query_format(vo, fmt)) { config_format = fmt; break; } } int w = 960; int h = 480; struct mp_image_params p = { .imgfmt = config_format, .w = w, .h = h, .d_w = w, .d_h = h, }; vo_reconfig(vo, &p, 0); redraw_osd(mpctx); } } static double timing_sleep(struct MPContext *mpctx, double time_frame) { // assume kernel HZ=100 for softsleep, works with larger HZ but with // unnecessarily high CPU usage struct MPOpts *opts = mpctx->opts; double margin = opts->softsleep ? 0.011 : 0; while (time_frame > margin) { mp_sleep_us(1000000 * (time_frame - margin)); time_frame -= get_relative_time(mpctx); } if (opts->softsleep) { if (time_frame < 0) MP_WARN(mpctx, "Warning! Softsleep underflow!\n"); while (time_frame > 0) time_frame -= get_relative_time(mpctx); // burn the CPU } return time_frame; } static double get_wakeup_period(struct MPContext *mpctx) { /* Even if we can immediately wake up in response to most input events, * there are some timers which are not registered to the event loop * and need to be checked periodically (like automatic mouse cursor hiding). * OSD content updates behave similarly. Also some uncommon input devices * may not have proper FD event support. */ double sleeptime = WAKEUP_PERIOD; #ifndef HAVE_POSIX_SELECT // No proper file descriptor event handling; keep waking up to poll input sleeptime = MPMIN(sleeptime, 0.02); #endif if (mpctx->video_out) if (mpctx->video_out->wakeup_period > 0) sleeptime = MPMIN(sleeptime, mpctx->video_out->wakeup_period); return sleeptime; } void run_playloop(struct MPContext *mpctx) { struct MPOpts *opts = mpctx->opts; bool full_audio_buffers = false; bool audio_left = false, video_left = false; double endpts = get_play_end_pts(mpctx); bool end_is_chapter = false; double sleeptime = get_wakeup_period(mpctx); bool was_restart = mpctx->restart_playback; bool new_frame_shown = false; #if HAVE_ENCODING if (encode_lavc_didfail(mpctx->encode_lavc_ctx)) { mpctx->stop_play = PT_QUIT; return; } #endif // Add tracks that were added by the demuxer later (e.g. MPEG) if (!mpctx->timeline && mpctx->demuxer) add_demuxer_tracks(mpctx, mpctx->demuxer); if (mpctx->timeline) { double end = mpctx->timeline[mpctx->timeline_part + 1].start; if (endpts == MP_NOPTS_VALUE || end < endpts) { endpts = end; end_is_chapter = true; } } if (opts->chapterrange[1] > 0) { int cur_chapter = get_current_chapter(mpctx); if (cur_chapter != -1 && cur_chapter + 1 > opts->chapterrange[1]) mpctx->stop_play = PT_NEXT_ENTRY; } if (mpctx->d_audio && !mpctx->restart_playback && !mpctx->ao->untimed) { int status = fill_audio_out_buffers(mpctx, endpts); full_audio_buffers = status >= 0; // Not at audio stream EOF yet audio_left = status > -2; } if (mpctx->video_out) { vo_check_events(mpctx->video_out); handle_cursor_autohide(mpctx); } double buffered_audio = -1; while (mpctx->d_video) { // never loops, for "break;" only struct vo *vo = mpctx->video_out; update_fps(mpctx); video_left = vo->hasframe || vo->frame_loaded || mpctx->playing_last_frame; if (!vo->frame_loaded && (!mpctx->paused || mpctx->restart_playback)) { double frame_time = update_video(mpctx, endpts); if (frame_time < 0) { if (!mpctx->playing_last_frame && mpctx->last_frame_duration > 0) { mpctx->time_frame += mpctx->last_frame_duration; mpctx->last_frame_duration = 0; mpctx->playing_last_frame = true; } if (mpctx->playing_last_frame) { frame_time = 0; // don't stop playback yet } else if (mpctx->d_video->waiting_decoded_mpi) { // Format changes behave like EOF, and this call "unstucks" // the EOF condition (after waiting for the previous frame // to finish displaying). video_execute_format_change(mpctx); frame_time = update_video(mpctx, endpts); // We just displayed the previous frame, so display the // new frame immediately. if (frame_time > 0) frame_time = 0; } } mp_msg(MSGT_AVSYNC, MSGL_DBG2, "*** ftime=%5.3f ***\n", frame_time); if (mpctx->d_video->vfilter && mpctx->d_video->vfilter->initialized < 0) { MP_FATAL(mpctx, "\nFATAL: Could not initialize video filters " "(-vf) or video output (-vo).\n"); int uninit = INITIALIZED_VCODEC; if (!opts->force_vo) uninit |= INITIALIZED_VO; uninit_player(mpctx, uninit); mpctx->current_track[STREAM_VIDEO] = NULL; if (!mpctx->current_track[STREAM_AUDIO]) mpctx->stop_play = PT_NEXT_ENTRY; mpctx->error_playing = true; handle_force_window(mpctx, true); break; } video_left = frame_time >= 0; if (video_left && !mpctx->restart_playback) { mpctx->time_frame += frame_time / opts->playback_speed; adjust_sync(mpctx, frame_time); } if (!video_left) { mpctx->delay = 0; mpctx->last_av_difference = 0; } } if (endpts != MP_NOPTS_VALUE) video_left &= mpctx->video_next_pts < endpts; handle_heartbeat_cmd(mpctx); if (!video_left || (mpctx->paused && !mpctx->restart_playback)) break; if (!vo->frame_loaded && !mpctx->playing_last_frame) { sleeptime = 0; break; } mpctx->time_frame -= get_relative_time(mpctx); if (full_audio_buffers && !mpctx->restart_playback) { buffered_audio = ao_get_delay(mpctx->ao); mp_msg(MSGT_AVSYNC, MSGL_DBG2, "delay=%f\n", buffered_audio); if (opts->autosync) { /* Smooth reported playback position from AO by averaging * it with the value expected based on previus value and * time elapsed since then. May help smooth video timing * with audio output that have inaccurate position reporting. * This is badly implemented; the behavior of the smoothing * now undesirably depends on how often this code runs * (mainly depends on video frame rate). */ float predicted = (mpctx->delay / opts->playback_speed + mpctx->time_frame); float difference = buffered_audio - predicted; buffered_audio = predicted + difference / opts->autosync; } mpctx->time_frame = (buffered_audio - mpctx->delay / opts->playback_speed); } else { /* If we're more than 200 ms behind the right playback * position, don't try to speed up display of following * frames to catch up; continue with default speed from * the current frame instead. * If untimed is set always output frames immediately * without sleeping. */ if (mpctx->time_frame < -0.2 || opts->untimed || vo->untimed) mpctx->time_frame = 0; } double vsleep = mpctx->time_frame - vo->flip_queue_offset; if (vsleep > 0.050) { sleeptime = MPMIN(sleeptime, vsleep - 0.040); break; } sleeptime = 0; mpctx->playing_last_frame = false; // last frame case (don't set video_left - consider format changes) if (!vo->frame_loaded) break; //=================== FLIP PAGE (VIDEO BLT): ====================== vo_new_frame_imminent(vo); mpctx->video_pts = mpctx->video_next_pts; mpctx->last_vo_pts = mpctx->video_pts; mpctx->playback_pts = mpctx->video_pts; update_subtitles(mpctx); update_osd_msg(mpctx); draw_osd(mpctx); mpctx->time_frame -= get_relative_time(mpctx); mpctx->time_frame -= vo->flip_queue_offset; if (mpctx->time_frame > 0.001) mpctx->time_frame = timing_sleep(mpctx, mpctx->time_frame); mpctx->time_frame += vo->flip_queue_offset; int64_t t2 = mp_time_us(); /* Playing with playback speed it's possible to get pathological * cases with mpctx->time_frame negative enough to cause an * overflow in pts_us calculation, thus the MPMAX. */ double time_frame = MPMAX(mpctx->time_frame, -1); int64_t pts_us = mpctx->last_time + time_frame * 1e6; int duration = -1; double pts2 = vo->next_pts2; if (mpctx->video_pts != MP_NOPTS_VALUE && pts2 == MP_NOPTS_VALUE) { // Make up a frame duration. Using the frame rate is not a good // choice, since the frame rate could be unset/broken/random. float fps = mpctx->d_video->fps; double frame_time = fps > 0 ? 1.0 / fps : 0; pts2 = mpctx->video_pts + frame_time; } if (pts2 != MP_NOPTS_VALUE) { // expected A/V sync correction is ignored double diff = (pts2 - mpctx->video_pts); diff /= opts->playback_speed; if (mpctx->time_frame < 0) diff += mpctx->time_frame; if (diff < 0) diff = 0; if (diff > 10) diff = 10; duration = diff * 1e6; mpctx->last_frame_duration = diff; } if (mpctx->restart_playback) duration = -1; vo_flip_page(vo, pts_us | 1, duration); mpctx->last_vo_flip_duration = (mp_time_us() - t2) * 0.000001; if (vo->driver->flip_page_timed) { // No need to adjust sync based on flip speed mpctx->last_vo_flip_duration = 0; // For print_status - VO call finishing early is OK for sync mpctx->time_frame -= get_relative_time(mpctx); } mpctx->shown_vframes++; if (mpctx->restart_playback) { if (mpctx->sync_audio_to_video) { mpctx->syncing_audio = true; if (mpctx->d_audio) fill_audio_out_buffers(mpctx, endpts); mpctx->restart_playback = false; } mpctx->time_frame = 0; get_relative_time(mpctx); } update_avsync(mpctx); print_status(mpctx); screenshot_flip(mpctx); new_frame_shown = true; break; } // video video_left &= mpctx->sync_audio_to_video; // force no-video semantics if (mpctx->d_audio && (mpctx->restart_playback ? !video_left : mpctx->ao->untimed && (mpctx->delay <= 0 || !video_left))) { int status = fill_audio_out_buffers(mpctx, endpts); full_audio_buffers = status >= 0 && !mpctx->ao->untimed; // Not at audio stream EOF yet audio_left = status > -2; } if (!video_left) mpctx->restart_playback = false; if (mpctx->d_audio && buffered_audio == -1) buffered_audio = mpctx->paused ? 0 : ao_get_delay(mpctx->ao); update_osd_msg(mpctx); // The cache status is part of the status line. Possibly update it. if (mpctx->paused && mp_get_cache_percent(mpctx) >= 0) print_status(mpctx); if (!video_left && (!mpctx->paused || was_restart)) { double a_pos = 0; if (mpctx->d_audio) { a_pos = (written_audio_pts(mpctx) - mpctx->opts->playback_speed * buffered_audio); } mpctx->playback_pts = a_pos; print_status(mpctx); } update_subtitles(mpctx); /* It's possible for the user to simultaneously switch both audio * and video streams to "disabled" at runtime. Handle this by waiting * rather than immediately stopping playback due to EOF. * * When all audio has been written to output driver, stay in the * main loop handling commands until it has been mostly consumed, * except in the gapless case, where the next file will be started * while audio from the current one still remains to be played. * * We want this check to trigger if we seeked to this position, * but not if we paused at it with audio possibly still buffered in * the AO. There's currently no working way to check buffered audio * inside AO while paused. Thus the "was_restart" check below, which * should trigger after seek only, when we know there's no audio * buffered. */ if ((mpctx->d_audio || mpctx->d_video) && !audio_left && !video_left && (opts->gapless_audio || buffered_audio < 0.05) && (!mpctx->paused || was_restart)) { if (end_is_chapter) { mp_seek(mpctx, (struct seek_params){ .type = MPSEEK_ABSOLUTE, .amount = mpctx->timeline[mpctx->timeline_part+1].start }, true); } else mpctx->stop_play = AT_END_OF_FILE; } mp_handle_nav(mpctx); if (!mpctx->stop_play && !mpctx->restart_playback) { // If no more video is available, one frame means one playloop iteration. // Otherwise, one frame means one video frame. if (!video_left) new_frame_shown = true; if (opts->playing_msg && !mpctx->playing_msg_shown && new_frame_shown) { mpctx->playing_msg_shown = true; char *msg = mp_property_expand_string(mpctx, opts->playing_msg); MP_INFO(mpctx, "%s\n", msg); talloc_free(msg); } if (mpctx->max_frames >= 0) { if (new_frame_shown) mpctx->max_frames--; if (mpctx->max_frames <= 0) mpctx->stop_play = PT_NEXT_ENTRY; } if (mpctx->step_frames > 0 && !mpctx->paused) { if (new_frame_shown) mpctx->step_frames--; if (mpctx->step_frames == 0) pause_player(mpctx); } } if (!mpctx->stop_play) { double audio_sleep = 9; if (mpctx->restart_playback) sleeptime = 0; if (mpctx->d_audio && !mpctx->paused) { if (mpctx->ao->untimed) { if (!video_left) audio_sleep = 0; } else if (full_audio_buffers) { audio_sleep = buffered_audio - 0.050; // Keep extra safety margin if the buffers are large if (audio_sleep > 0.100) audio_sleep = MPMAX(audio_sleep - 0.200, 0.100); else audio_sleep = MPMAX(audio_sleep, 0.020); } else audio_sleep = 0.020; } sleeptime = MPMIN(sleeptime, audio_sleep); if (sleeptime > 0) { if (handle_osd_redraw(mpctx)) sleeptime = 0; } if (sleeptime > 0) mp_input_get_cmd(mpctx->input, sleeptime * 1000, true); } handle_metadata_update(mpctx); handle_pause_on_low_cache(mpctx); handle_input_and_seek_coalesce(mpctx); handle_backstep(mpctx); handle_sstep(mpctx); handle_keep_open(mpctx); handle_force_window(mpctx, false); execute_queued_seek(mpctx); } // Waiting for the slave master to send us a new file to play. void idle_loop(struct MPContext *mpctx) { // ================= idle loop (STOP state) ========================= bool need_reinit = true; while (mpctx->opts->player_idle_mode && !mpctx->playlist->current && mpctx->stop_play != PT_QUIT) { if (need_reinit) handle_force_window(mpctx, true); need_reinit = false; int uninit = INITIALIZED_AO; if (!mpctx->opts->force_vo) uninit |= INITIALIZED_VO; uninit_player(mpctx, uninit); handle_force_window(mpctx, false); if (mpctx->video_out) vo_check_events(mpctx->video_out); update_osd_msg(mpctx); handle_osd_redraw(mpctx); mp_cmd_t *cmd = mp_input_get_cmd(mpctx->input, get_wakeup_period(mpctx) * 1000, false); if (cmd) run_command(mpctx, cmd); mp_cmd_free(cmd); mp_flush_events(mpctx); } }