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mpv/player/playloop.c
wm4 a1dec6f54a player: make looping slightly more seamless 
This affects A-B loops and --loop-file, and audio. Instead of dropping
audio by resetting the AO, try to make it seamless by not sending data
after the loop point, and after the seek send new data without a reset.
2016-08-18 20:40:23 +02:00

1095 lines
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/*
* This file is part of mpv.
*
* mpv 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.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stddef.h>
#include <stdbool.h>
#include <inttypes.h>
#include <math.h>
#include <assert.h>
#include "config.h"
#include "mpv_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 "misc/dispatch.h"
#include "osdep/terminal.h"
#include "osdep/timer.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 "client.h"
#include "command.h"
// Wait until mp_input_wakeup(mpctx->input) is called, since the last time
// mp_wait_events() was called. (But see mp_process_input().)
void mp_wait_events(struct MPContext *mpctx, double sleeptime)
{
mp_input_wait(mpctx->input, sleeptime);
}
// Process any queued input, whether it's user input, or requests from client
// API threads. This also resets the "wakeup" flag used with mp_wait_events().
void mp_process_input(struct MPContext *mpctx)
{
mp_dispatch_queue_process(mpctx->dispatch, 0);
for (;;) {
mp_cmd_t *cmd = mp_input_read_cmd(mpctx->input);
if (!cmd)
break;
run_command(mpctx, cmd, NULL);
mp_cmd_free(cmd);
mp_dispatch_queue_process(mpctx->dispatch, 0);
}
}
double get_relative_time(struct MPContext *mpctx)
{
int64_t new_time = mp_time_us();
int64_t delta = new_time - mpctx->last_time;
mpctx->last_time = new_time;
return delta * 0.000001;
}
void pause_player(struct MPContext *mpctx)
{
mpctx->opts->pause = 1;
if (mpctx->video_out)
vo_control(mpctx->video_out, VOCTRL_RESTORE_SCREENSAVER, NULL);
if (mpctx->paused)
goto end;
mpctx->paused = true;
mpctx->step_frames = 0;
mpctx->time_frame -= get_relative_time(mpctx);
mpctx->osd_function = 0;
mpctx->osd_force_update = true;
mpctx->paused_for_cache = false;
if (mpctx->ao && mpctx->ao_chain)
ao_pause(mpctx->ao);
if (mpctx->video_out)
vo_set_paused(mpctx->video_out, true);
end:
mp_notify(mpctx, mpctx->opts->pause ? MPV_EVENT_PAUSE : MPV_EVENT_UNPAUSE, 0);
}
void unpause_player(struct MPContext *mpctx)
{
mpctx->opts->pause = 0;
if (mpctx->video_out && mpctx->opts->stop_screensaver)
vo_control(mpctx->video_out, VOCTRL_KILL_SCREENSAVER, NULL);
if (!mpctx->paused)
goto end;
// Don't actually unpause while cache is loading.
if (mpctx->paused_for_cache)
goto end;
mpctx->paused = false;
mpctx->osd_function = 0;
mpctx->osd_force_update = true;
if (mpctx->ao && mpctx->ao_chain)
ao_resume(mpctx->ao);
if (mpctx->video_out)
vo_set_paused(mpctx->video_out, false);
(void)get_relative_time(mpctx); // ignore time that passed during pause
end:
mp_notify(mpctx, mpctx->opts->pause ? MPV_EVENT_PAUSE : MPV_EVENT_UNPAUSE, 0);
}
void add_step_frame(struct MPContext *mpctx, int dir)
{
if (!mpctx->vo_chain)
return;
if (dir > 0) {
mpctx->step_frames += 1;
unpause_player(mpctx);
} else if (dir < 0) {
if (!mpctx->hrseek_active) {
queue_seek(mpctx, MPSEEK_BACKSTEP, 0, MPSEEK_VERY_EXACT, 0);
pause_player(mpctx);
}
}
}
// Clear some playback-related fields on file loading or after seeks.
void reset_playback_state(struct MPContext *mpctx)
{
if (mpctx->lavfi)
lavfi_seek_reset(mpctx->lavfi);
for (int n = 0; n < mpctx->num_tracks; n++) {
if (mpctx->tracks[n]->d_video)
video_reset(mpctx->tracks[n]->d_video);
if (mpctx->tracks[n]->d_audio)
audio_reset_decoding(mpctx->tracks[n]->d_audio);
}
reset_video_state(mpctx);
reset_audio_state(mpctx);
reset_subtitle_state(mpctx);
mpctx->hrseek_active = false;
mpctx->hrseek_framedrop = false;
mpctx->hrseek_lastframe = false;
mpctx->hrseek_backstep = false;
mpctx->playback_pts = MP_NOPTS_VALUE;
mpctx->last_seek_pts = MP_NOPTS_VALUE;
mpctx->cache_wait_time = 0;
mpctx->step_frames = 0;
mpctx->ab_loop_clip = true;
mpctx->restart_complete = false;
#if HAVE_ENCODING
encode_lavc_discontinuity(mpctx->encode_lavc_ctx);
#endif
}
static void mp_seek(MPContext *mpctx, struct seek_params seek)
{
struct MPOpts *opts = mpctx->opts;
if (!mpctx->demuxer || seek.type == MPSEEK_NONE || seek.amount == MP_NOPTS_VALUE)
return;
if (!mpctx->demuxer->seekable) {
MP_ERR(mpctx, "Cannot seek in this file.\n");
MP_ERR(mpctx, "You can forcibly enable it with '--force-seekable=yes'.\n");
return;
}
bool hr_seek_very_exact = seek.exact == MPSEEK_VERY_EXACT;
double current_time = get_current_time(mpctx);
if (current_time == MP_NOPTS_VALUE)
current_time = 0;
double seek_pts = MP_NOPTS_VALUE;
int demux_flags = 0;
switch (seek.type) {
case MPSEEK_ABSOLUTE:
seek_pts = seek.amount;
break;
case MPSEEK_BACKSTEP:
seek_pts = current_time;
hr_seek_very_exact = true;
break;
case MPSEEK_RELATIVE:
demux_flags = seek.amount > 0 ? SEEK_FORWARD : SEEK_BACKWARD;
seek_pts = current_time + seek.amount;
break;
case MPSEEK_FACTOR: ;
double len = get_time_length(mpctx);
if (len >= 0)
seek_pts = seek.amount * len;
demux_flags = seek_pts > current_time ? SEEK_FORWARD : SEEK_BACKWARD;
break;
default: abort();
}
double demux_pts = seek_pts;
bool hr_seek = opts->correct_pts && seek.exact != MPSEEK_KEYFRAME &&
((opts->hr_seek == 0 && seek.type == MPSEEK_ABSOLUTE) ||
opts->hr_seek > 0 || seek.exact >= MPSEEK_EXACT) &&
seek_pts != MP_NOPTS_VALUE;
if (seek.type == MPSEEK_FACTOR || seek.amount < 0 ||
(seek.type == MPSEEK_ABSOLUTE && seek.amount < mpctx->last_chapter_pts))
mpctx->last_chapter_seek = -2;
// Under certain circumstances, prefer SEEK_FACTOR.
if (seek.type == MPSEEK_FACTOR && !hr_seek &&
(mpctx->demuxer->ts_resets_possible || seek_pts == MP_NOPTS_VALUE))
{
demux_pts = seek.amount;
demux_flags |= SEEK_FACTOR;
}
if (hr_seek) {
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 (hr_seek_very_exact)
hr_seek_offset = MPMAX(hr_seek_offset, 0.5); // arbitrary
for (int n = 0; n < mpctx->num_tracks; n++) {
double offset = 0;
if (!mpctx->tracks[n]->is_external)
offset += get_track_seek_offset(mpctx, mpctx->tracks[n]);
hr_seek_offset = MPMAX(hr_seek_offset, -offset);
}
demux_pts -= hr_seek_offset;
demux_flags = (demux_flags | SEEK_HR | SEEK_BACKWARD) & ~SEEK_FORWARD;
}
demux_seek(mpctx->demuxer, demux_pts, demux_flags);
// Seek external, extra files too:
for (int t = 0; t < mpctx->num_tracks; t++) {
struct track *track = mpctx->tracks[t];
if (track->selected && track->is_external && track->demuxer) {
double main_new_pos = demux_pts;
if (!hr_seek || track->is_external)
main_new_pos += get_track_seek_offset(mpctx, track);
if (demux_flags & SEEK_FACTOR)
main_new_pos = seek_pts;
demux_seek(track->demuxer, main_new_pos, 0);
}
}
if (!(seek.flags & MPSEEK_FLAG_NOFLUSH))
clear_audio_output_buffers(mpctx);
reset_playback_state(mpctx);
/* Use the target time as "current position" for further relative
* seeks etc until a new video frame has been decoded */
mpctx->last_seek_pts = seek_pts;
if (hr_seek) {
mpctx->hrseek_active = true;
mpctx->hrseek_framedrop = !hr_seek_very_exact && opts->hr_seek_framedrop;
mpctx->hrseek_backstep = seek.type == MPSEEK_BACKSTEP;
mpctx->hrseek_pts = seek_pts;
MP_VERBOSE(mpctx, "hr-seek, skipping to %f%s%s\n", mpctx->hrseek_pts,
mpctx->hrseek_framedrop ? "" : " (no framedrop)",
mpctx->hrseek_backstep ? " (backstep)" : "");
}
if (mpctx->stop_play == AT_END_OF_FILE)
mpctx->stop_play = KEEP_PLAYING;
mpctx->start_timestamp = mp_time_sec();
mpctx->sleeptime = 0;
mp_notify(mpctx, MPV_EVENT_SEEK, NULL);
mp_notify(mpctx, MPV_EVENT_TICK, NULL);
mpctx->audio_allow_second_chance_seek =
!hr_seek && !(demux_flags & SEEK_FORWARD);
mpctx->ab_loop_clip = mpctx->last_seek_pts < opts->ab_loop[1];
}
// This combines consecutive seek requests.
void queue_seek(struct MPContext *mpctx, enum seek_type type, double amount,
enum seek_precision exact, int flags)
{
struct seek_params *seek = &mpctx->seek;
if (mpctx->stop_play == AT_END_OF_FILE)
mpctx->stop_play = KEEP_PLAYING;
switch (type) {
case MPSEEK_RELATIVE:
seek->flags |= flags;
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;
seek->type = MPSEEK_RELATIVE;
return;
case MPSEEK_ABSOLUTE:
case MPSEEK_FACTOR:
case MPSEEK_BACKSTEP:
*seek = (struct seek_params) {
.type = type,
.amount = amount,
.exact = exact,
.flags = flags,
};
return;
case MPSEEK_NONE:
*seek = (struct seek_params){ 0 };
return;
}
abort();
}
void execute_queued_seek(struct MPContext *mpctx)
{
if (mpctx->seek.type) {
// Let explicitly imprecise seeks cancel precise seeks:
if (mpctx->hrseek_active && mpctx->seek.exact == MPSEEK_KEYFRAME)
mpctx->start_timestamp = -1e9;
/* 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). */
bool delay = mpctx->seek.flags & MPSEEK_FLAG_DELAY;
if (delay && mpctx->video_status < STATUS_PLAYING &&
mp_time_sec() - mpctx->start_timestamp < 0.3)
return;
mp_seek(mpctx, mpctx->seek);
mpctx->seek = (struct seek_params){0};
}
}
// -1 if unknown
double get_time_length(struct MPContext *mpctx)
{
struct demuxer *demuxer = mpctx->demuxer;
if (!demuxer)
return -1;
double len = demuxer_get_time_length(demuxer);
if (len >= 0)
return len;
return -1; // unknown
}
double get_current_time(struct MPContext *mpctx)
{
struct demuxer *demuxer = mpctx->demuxer;
if (demuxer) {
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 MP_NOPTS_VALUE;
}
double get_playback_time(struct MPContext *mpctx)
{
double cur = get_current_time(mpctx);
if (cur == MP_NOPTS_VALUE)
return cur;
// During seeking, the time corresponds to the last seek time - apply some
// cosmetics to it.
if (mpctx->playback_pts == MP_NOPTS_VALUE) {
double length = get_time_length(mpctx);
if (length >= 0)
cur = MPCLAMP(cur, 0, length);
}
return cur;
}
// 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 = 0;
double len = get_time_length(mpctx);
if (use_range) {
double startpos = rel_time_to_abs(mpctx, mpctx->opts->play_start);
double endpos = get_play_end_pts(mpctx);
if (endpos == MP_NOPTS_VALUE || endpos > MPMAX(0, len))
endpos = MPMAX(0, len);
if (startpos == MP_NOPTS_VALUE || startpos < 0)
startpos = 0;
if (endpos < startpos)
endpos = startpos;
start = startpos;
len = endpos - startpos;
}
double pos = get_current_time(mpctx);
if (len > 0)
ans = MPCLAMP((pos - start) / len, 0, 1);
if (ans < 0 || demuxer->ts_resets_possible) {
int64_t size;
if (demux_stream_control(demuxer, STREAM_CTRL_GET_SIZE, &size) > 0) {
if (size > 0 && demuxer->filepos >= 0)
ans = MPCLAMP(demuxer->filepos / (double)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;
}
// 0-100, -1 if unknown
int get_percent_pos(struct MPContext *mpctx)
{
double pos = get_current_pos_ratio(mpctx, false);
return pos < 0 ? -1 : pos * 100;
}
// -2 is no chapters, -1 is before first chapter
int get_current_chapter(struct MPContext *mpctx)
{
if (!mpctx->num_chapters)
return -2;
double current_pts = get_current_time(mpctx);
int i;
for (i = 0; i < mpctx->num_chapters; i++)
if (current_pts < mpctx->chapters[i].pts)
break;
return MPMAX(mpctx->last_chapter_seek, i - 1);
}
char *chapter_display_name(struct MPContext *mpctx, int chapter)
{
char *name = chapter_name(mpctx, chapter);
char *dname = NULL;
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);
}
return dname;
}
// returns NULL if chapter name unavailable
char *chapter_name(struct MPContext *mpctx, int chapter)
{
if (chapter < 0 || chapter >= mpctx->num_chapters)
return NULL;
return mp_tags_get_str(mpctx->chapters[chapter].metadata, "title");
}
// returns the start of the chapter in seconds (NOPTS if unavailable)
double chapter_start_time(struct MPContext *mpctx, int chapter)
{
if (chapter == -1)
return 0;
if (chapter >= 0 && chapter < mpctx->num_chapters)
return mpctx->chapters[chapter].pts;
return MP_NOPTS_VALUE;
}
int get_chapter_count(struct MPContext *mpctx)
{
return mpctx->num_chapters;
}
static void handle_osd_redraw(struct MPContext *mpctx)
{
if (!mpctx->video_out || !mpctx->video_out->config_ok)
return;
// If we're playing normally, let OSD be redrawn naturally as part of
// video display.
if (!mpctx->paused) {
if (mpctx->sleeptime < 0.1 && mpctx->video_status == STATUS_PLAYING)
return;
}
// Don't redraw immediately during a seek (makes it significantly slower).
bool use_video = mpctx->vo_chain && !mpctx->vo_chain->is_coverart;
if (use_video && mp_time_sec() - mpctx->start_timestamp < 0.1) {
mpctx->sleeptime = MPMIN(mpctx->sleeptime, 0.1);
return;
}
bool want_redraw = osd_query_and_reset_want_redraw(mpctx->osd) ||
vo_want_redraw(mpctx->video_out);
if (!want_redraw)
return;
vo_redraw(mpctx->video_out);
mpctx->sleeptime = 0;
}
static void handle_pause_on_low_cache(struct MPContext *mpctx)
{
bool force_update = false;
struct MPOpts *opts = mpctx->opts;
if (!mpctx->demuxer)
return;
double now = mp_time_sec();
struct stream_cache_info c = {.idle = true};
demux_stream_control(mpctx->demuxer, STREAM_CTRL_GET_CACHE_INFO, &c);
struct demux_ctrl_reader_state s = {.idle = true, .ts_duration = -1};
demux_control(mpctx->demuxer, DEMUXER_CTRL_GET_READER_STATE, &s);
int cache_buffer = 100;
if (mpctx->restart_complete && c.size > 0) {
if (mpctx->paused && mpctx->paused_for_cache) {
if (!opts->cache_pausing || s.ts_duration >= mpctx->cache_wait_time
|| s.idle)
{
double elapsed_time = now - mpctx->cache_stop_time;
if (elapsed_time > mpctx->cache_wait_time) {
mpctx->cache_wait_time *= 1.5 + 0.1;
} else {
mpctx->cache_wait_time /= 1.5 - 0.1;
}
mpctx->paused_for_cache = false;
if (!opts->pause)
unpause_player(mpctx);
force_update = true;
}
mpctx->sleeptime = MPMIN(mpctx->sleeptime, 0.2);
} else {
if (opts->cache_pausing && s.underrun) {
bool prev_paused_user = opts->pause;
pause_player(mpctx);
mpctx->paused_for_cache = true;
opts->pause = prev_paused_user;
mpctx->cache_stop_time = now;
force_update = true;
}
}
mpctx->cache_wait_time = MPCLAMP(mpctx->cache_wait_time, 1, 10);
if (mpctx->paused_for_cache) {
cache_buffer =
100 * MPCLAMP(s.ts_duration / mpctx->cache_wait_time, 0, 0.99);
}
}
// Also update cache properties.
bool busy = !s.idle || !c.idle;
if (busy || mpctx->next_cache_update > 0) {
if (mpctx->next_cache_update <= now) {
mpctx->next_cache_update = busy ? now + 0.25 : 0;
force_update = true;
}
if (mpctx->next_cache_update > 0) {
mpctx->sleeptime =
MPMIN(mpctx->sleeptime, mpctx->next_cache_update - now);
}
}
if (mpctx->cache_buffer != cache_buffer) {
if (mpctx->cache_buffer >= 0 &&
(mpctx->cache_buffer == 100) != (cache_buffer == 100))
{
if (cache_buffer < 100) {
MP_VERBOSE(mpctx, "Enter buffering.\n");
} else {
double t = now - mpctx->cache_stop_time;
MP_VERBOSE(mpctx, "End buffering (waited %f secs).\n", t);
}
}
mpctx->cache_buffer = cache_buffer;
force_update = true;
}
if (force_update)
mp_notify(mpctx, MP_EVENT_CACHE_UPDATE, NULL);
}
int get_cache_buffering_percentage(struct MPContext *mpctx)
{
return mpctx->demuxer ? mpctx->cache_buffer : -1;
}
static void handle_heartbeat_cmd(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
if (opts->heartbeat_cmd && !mpctx->paused && mpctx->video_out) {
double now = mp_time_sec();
if (mpctx->next_heartbeat <= now) {
mpctx->next_heartbeat = now + opts->heartbeat_interval;
(void)system(opts->heartbeat_cmd);
}
mpctx->sleeptime = MPMIN(mpctx->sleeptime, mpctx->next_heartbeat - now);
}
}
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;
double now = mp_time_sec();
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 = now + opts->cursor_autohide_delay / 1000.0;
mouse_cursor_visible = true;
}
if (mpctx->mouse_timer > now) {
mpctx->sleeptime = MPMIN(mpctx->sleeptime, mpctx->mouse_timer - now);
} else {
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_vo_events(struct MPContext *mpctx)
{
struct vo *vo = mpctx->video_out;
int events = vo ? vo_query_and_reset_events(vo, VO_EVENTS_USER) : 0;
if (events & VO_EVENT_RESIZE)
mp_notify(mpctx, MP_EVENT_WIN_RESIZE, NULL);
if (events & VO_EVENT_WIN_STATE)
mp_notify(mpctx, MP_EVENT_WIN_STATE, NULL);
}
static void handle_sstep(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
if (mpctx->stop_play || !mpctx->restart_complete)
return;
if (opts->step_sec > 0 && !mpctx->paused) {
set_osd_function(mpctx, OSD_FFW);
queue_seek(mpctx, MPSEEK_RELATIVE, opts->step_sec, MPSEEK_DEFAULT, 0);
}
if (mpctx->video_status >= STATUS_EOF) {
if (mpctx->max_frames >= 0 && !mpctx->stop_play)
mpctx->stop_play = AT_END_OF_FILE; // force EOF even if audio left
if (mpctx->step_frames > 0 && !mpctx->paused)
pause_player(mpctx);
}
}
static void handle_loop_file(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
if (mpctx->stop_play == AT_END_OF_FILE &&
(opts->ab_loop[0] != MP_NOPTS_VALUE || opts->ab_loop[1] != MP_NOPTS_VALUE))
{
// Assumes execute_queued_seek() happens before next audio/video is
// attempted to be decoded or filtered.
mpctx->stop_play = KEEP_PLAYING;
double start = 0;
if (opts->ab_loop[0] != MP_NOPTS_VALUE)
start = opts->ab_loop[0];
mark_seek(mpctx);
queue_seek(mpctx, MPSEEK_ABSOLUTE, start, MPSEEK_EXACT,
MPSEEK_FLAG_NOFLUSH);
}
if (opts->loop_file && mpctx->stop_play == AT_END_OF_FILE) {
mpctx->stop_play = KEEP_PLAYING;
set_osd_function(mpctx, OSD_FFW);
queue_seek(mpctx, MPSEEK_ABSOLUTE, 0, MPSEEK_DEFAULT, MPSEEK_FLAG_NOFLUSH);
if (opts->loop_file > 0)
opts->loop_file--;
}
}
void seek_to_last_frame(struct MPContext *mpctx)
{
if (!mpctx->vo_chain)
return;
if (mpctx->hrseek_lastframe) // exit if we already tried this
return;
MP_VERBOSE(mpctx, "seeking to last frame...\n");
// Approximately seek close to the end of the file.
// Usually, it will seek some seconds before end.
double end = get_play_end_pts(mpctx);
if (end == MP_NOPTS_VALUE)
end = get_time_length(mpctx);
mp_seek(mpctx, (struct seek_params){
.type = MPSEEK_ABSOLUTE,
.amount = end,
.exact = MPSEEK_VERY_EXACT,
});
// Make it exact: stop seek only if last frame was reached.
if (mpctx->hrseek_active) {
mpctx->hrseek_pts = 1e99; // "infinite"
mpctx->hrseek_lastframe = true;
}
}
static void handle_keep_open(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
if (opts->keep_open && mpctx->stop_play == AT_END_OF_FILE &&
(opts->keep_open == 2 || !playlist_get_next(mpctx->playlist, 1)) &&
opts->loop_times == 1)
{
mpctx->stop_play = KEEP_PLAYING;
if (mpctx->vo_chain) {
if (!vo_has_frame(mpctx->video_out)) // EOF not reached normally
seek_to_last_frame(mpctx);
mpctx->playback_pts = mpctx->last_vo_pts;
}
if (!mpctx->opts->pause)
pause_player(mpctx);
}
}
static void handle_chapter_change(struct MPContext *mpctx)
{
int chapter = get_current_chapter(mpctx);
if (chapter != mpctx->last_chapter) {
mpctx->last_chapter = chapter;
mp_notify(mpctx, MPV_EVENT_CHAPTER_CHANGE, NULL);
}
}
// Execute a forceful refresh of the VO window. This clears the window from
// the previous video. It also creates/destroys the VO on demand.
// It tries to make the change only in situations where the window is
// definitely needed or not needed, or if the force parameter is set (the
// latter also decides whether to clear an existing window, because there's
// no way to know if this has already been done or not).
int handle_force_window(struct MPContext *mpctx, bool force)
{
// True if we're either in idle mode, or loading of the file has finished.
// It's also set via force in some stages during file loading.
bool act = !mpctx->playing || mpctx->playback_initialized || force;
// On the other hand, if a video track is selected, but no video is ever
// decoded on it, then create the window.
bool stalled_video = mpctx->playback_initialized && mpctx->restart_complete &&
mpctx->video_status == STATUS_EOF && mpctx->vo_chain &&
!mpctx->video_out->config_ok;
// Don't interfere with real video playback
if (mpctx->vo_chain && !stalled_video)
return 0;
if (!mpctx->opts->force_vo) {
if (act && !mpctx->vo_chain)
uninit_video_out(mpctx);
return 0;
}
if (mpctx->opts->force_vo != 2 && !act)
return 0;
if (!mpctx->video_out) {
struct vo_extra ex = {
.input_ctx = mpctx->input,
.osd = mpctx->osd,
.encode_lavc_ctx = mpctx->encode_lavc_ctx,
};
mpctx->video_out = init_best_video_out(mpctx->global, &ex);
if (!mpctx->video_out)
goto err;
mpctx->mouse_cursor_visible = true;
}
if (!mpctx->video_out->config_ok || force) {
struct vo *vo = mpctx->video_out;
// Pick whatever works
int config_format = 0;
uint8_t fmts[IMGFMT_END - IMGFMT_START] = {0};
vo_query_formats(vo, fmts);
for (int fmt = IMGFMT_START; fmt < IMGFMT_END; fmt++) {
if (fmts[fmt - IMGFMT_START]) {
config_format = fmt;
break;
}
}
int w = 960;
int h = 480;
struct mp_image_params p = {
.imgfmt = config_format,
.w = w, .h = h,
.p_w = 1, .p_h = 1,
};
if (vo_reconfig(vo, &p) < 0)
goto err;
vo_control(vo, VOCTRL_RESTORE_SCREENSAVER, NULL);
vo_set_paused(vo, true);
vo_redraw(vo);
mp_notify(mpctx, MPV_EVENT_VIDEO_RECONFIG, NULL);
}
return 0;
err:
mpctx->opts->force_vo = 0;
uninit_video_out(mpctx);
MP_FATAL(mpctx, "Error opening/initializing the VO window.\n");
return -1;
}
// Potentially needed by some Lua scripts, which assume TICK always comes.
static void handle_dummy_ticks(struct MPContext *mpctx)
{
if (mpctx->video_status == STATUS_EOF || mpctx->paused) {
if (mp_time_sec() - mpctx->last_idle_tick > 0.050) {
mpctx->last_idle_tick = mp_time_sec();
mp_notify(mpctx, MPV_EVENT_TICK, NULL);
}
}
}
// Update current playback time.
static void handle_playback_time(struct MPContext *mpctx)
{
if (mpctx->vo_chain && !mpctx->vo_chain->is_coverart &&
mpctx->video_status >= STATUS_PLAYING &&
mpctx->video_status < STATUS_EOF)
{
mpctx->playback_pts = mpctx->video_pts;
} else if (mpctx->audio_status >= STATUS_PLAYING &&
mpctx->audio_status < STATUS_EOF)
{
mpctx->playback_pts = playing_audio_pts(mpctx);
}
}
// We always make sure audio and video buffers are filled before actually
// starting playback. This code handles starting them at the same time.
static void handle_playback_restart(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
if (mpctx->audio_status < STATUS_READY ||
mpctx->video_status < STATUS_READY)
return;
if (mpctx->video_status == STATUS_READY) {
mpctx->video_status = STATUS_PLAYING;
get_relative_time(mpctx);
mpctx->sleeptime = 0;
}
if (mpctx->audio_status == STATUS_READY) {
// If a new seek is queued while the current one finishes, don't
// actually play the audio, but resume seeking immediately.
if (mpctx->seek.type && mpctx->video_status == STATUS_PLAYING) {
handle_playback_time(mpctx);
execute_queued_seek(mpctx);
return;
}
fill_audio_out_buffers(mpctx); // actually play prepared buffer
}
if (!mpctx->restart_complete) {
mpctx->hrseek_active = false;
mpctx->restart_complete = true;
mpctx->audio_allow_second_chance_seek = false;
handle_playback_time(mpctx);
mp_notify(mpctx, MPV_EVENT_PLAYBACK_RESTART, NULL);
if (!mpctx->playing_msg_shown) {
if (opts->playing_msg && opts->playing_msg[0]) {
char *msg =
mp_property_expand_escaped_string(mpctx, opts->playing_msg);
struct mp_log *log = mp_log_new(NULL, mpctx->log, "!term-msg");
mp_info(log, "%s\n", msg);
talloc_free(log);
talloc_free(msg);
}
if (opts->osd_playing_msg && opts->osd_playing_msg[0]) {
char *msg =
mp_property_expand_escaped_string(mpctx, opts->osd_playing_msg);
set_osd_msg(mpctx, 1, opts->osd_duration, "%s", msg);
talloc_free(msg);
}
}
mpctx->playing_msg_shown = true;
mpctx->sleeptime = 0;
mpctx->ab_loop_clip = mpctx->playback_pts < opts->ab_loop[1];
MP_VERBOSE(mpctx, "playback restart complete\n");
}
}
static void handle_eof(struct MPContext *mpctx)
{
/* Don't quit while paused and we're displaying the last video frame. On the
* other hand, if we don't have a video frame, then the user probably seeked
* outside of the video, and we do want to quit. */
bool prevent_eof =
mpctx->paused && mpctx->video_out && vo_has_frame(mpctx->video_out);
/* 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.
*/
if ((mpctx->ao_chain || mpctx->vo_chain) && !prevent_eof &&
mpctx->audio_status == STATUS_EOF &&
mpctx->video_status == STATUS_EOF &&
!mpctx->stop_play)
{
mpctx->stop_play = AT_END_OF_FILE;
}
}
static void handle_complex_filter_decoders(struct MPContext *mpctx)
{
if (!mpctx->lavfi)
return;
for (int n = 0; n < mpctx->num_tracks; n++) {
struct track *track = mpctx->tracks[n];
if (!track->selected)
continue;
if (!track->sink || !lavfi_needs_input(track->sink))
continue;
if (track->d_audio) {
audio_work(track->d_audio);
struct mp_audio *fr;
int res = audio_get_frame(track->d_audio, &fr);
if (res == DATA_OK) {
lavfi_send_frame_a(track->sink, fr);
} else {
lavfi_send_status(track->sink, res);
}
}
if (track->d_video) {
video_work(track->d_video);
struct mp_image *fr;
int res = video_get_frame(track->d_video, &fr);
if (res == DATA_OK) {
lavfi_send_frame_v(track->sink, fr);
} else {
lavfi_send_status(track->sink, res);
}
}
}
}
void run_playloop(struct MPContext *mpctx)
{
#if HAVE_ENCODING
if (encode_lavc_didfail(mpctx->encode_lavc_ctx)) {
mpctx->stop_play = PT_QUIT;
return;
}
#endif
update_demuxer_properties(mpctx);
handle_complex_filter_decoders(mpctx);
handle_cursor_autohide(mpctx);
handle_vo_events(mpctx);
handle_heartbeat_cmd(mpctx);
handle_command_updates(mpctx);
if (mpctx->lavfi) {
if (lavfi_process(mpctx->lavfi))
mpctx->sleeptime = 0;
if (lavfi_has_failed(mpctx->lavfi))
mpctx->stop_play = AT_END_OF_FILE;
}
fill_audio_out_buffers(mpctx);
write_video(mpctx);
handle_playback_restart(mpctx);
handle_playback_time(mpctx);
handle_dummy_ticks(mpctx);
update_osd_msg(mpctx);
if (!mpctx->video_out)
update_subtitles(mpctx, mpctx->playback_pts);
handle_eof(mpctx);
handle_loop_file(mpctx);
handle_keep_open(mpctx);
handle_sstep(mpctx);
if (mpctx->stop_play == AT_END_OF_FILE && mpctx->seek.type)
mpctx->stop_play = KEEP_PLAYING;
if (mpctx->stop_play)
return;
handle_osd_redraw(mpctx);
mp_wait_events(mpctx, mpctx->sleeptime);
mpctx->sleeptime = 1e9; // infinite for all practical purposes
handle_pause_on_low_cache(mpctx);
mp_process_input(mpctx);
handle_chapter_change(mpctx);
handle_force_window(mpctx, false);
execute_queued_seek(mpctx);
}
void mp_idle(struct MPContext *mpctx)
{
handle_dummy_ticks(mpctx);
mp_wait_events(mpctx, mpctx->sleeptime);
mpctx->sleeptime = 100.0;
mp_process_input(mpctx);
handle_command_updates(mpctx);
handle_cursor_autohide(mpctx);
handle_vo_events(mpctx);
update_osd_msg(mpctx);
handle_osd_redraw(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) {
uninit_audio_out(mpctx);
handle_force_window(mpctx, true);
mpctx->sleeptime = 0;
mp_notify(mpctx, MPV_EVENT_IDLE, NULL);
need_reinit = false;
}
mp_idle(mpctx);
}
}
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