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ec7bc388d1
mpv/player/playloop.c
wm4 5fb05940f1 player: open stream and demuxer asynchronously 
Run opening the stream and opening the demuxer in a separate thread.
This should remove the last code paths in which the player can normally
get blocked on network.

When the stream is opened, the player will still react to input and so
on. Commands to abort opening can also be handled properly, instead of
using some of the old hacks in input.c. The only thing the user can
really do is aborting loading by navigating the playlist or quitting.
Whether playback abort works depends on the stream implementation; with
normal network, this will depend on what libavformat (via "interrupt"
callback) does.

Some pain is caused by DVD/BD/DVB. These want to reload the demuxer
sometimes. DVB wants it in order to discard old, inactive streams.
DVD/BD for the same reason, and also for reloading stream languages
and similar metadata. This means the stream and the demuxer have to
be loaded separately.

One minor detail is that we now need to copy all global options. This
wasn't really needed before, because the options were accessed on
opening only, but since opening is now on a separate thread, this
obviously becomes a necessity.
2014-10-06 21:49:26 +02:00

999 lines
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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.
*/
#include <stddef.h>
#include <stdbool.h>
#include <inttypes.h>
#include <math.h>
#include <assert.h>
#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 "misc/dispatch.h"
#include "osdep/terminal.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 "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);
mp_cmd_free(cmd);
mp_dispatch_queue_process(mpctx->dispatch, 0);
}
}
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->d_audio)
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->d_audio)
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->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);
}
}
}
// Clear some playback-related fields on file loading or after seeks.
void reset_playback_state(struct MPContext *mpctx)
{
reset_video_state(mpctx);
reset_audio_state(mpctx);
reset_subtitle_state(mpctx);
mpctx->hrseek_active = false;
mpctx->hrseek_framedrop = false;
mpctx->playback_pts = MP_NOPTS_VALUE;
mpctx->last_seek_pts = MP_NOPTS_VALUE;
mpctx->cache_wait_time = 0;
mpctx->restart_complete = false;
#if HAVE_ENCODING
encode_lavc_discontinuity(mpctx->encode_lavc_ctx);
#endif
}
// return -1 if seek failed (non-seekable stream?), 0 otherwise
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;
bool hr_seek_very_exact = seek.exact > 1;
// 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
bool hr_seek = opts->correct_pts && seek.exact >= 0;
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 && !mpctx->demuxer->ts_resets_possible) {
double len = get_time_length(mpctx);
if (len > 0) {
seek.amount = seek.amount * len + get_start_time(mpctx);
seek.type = MPSEEK_ABSOLUTE;
}
}
int direction = 0;
if (seek.type == MPSEEK_RELATIVE) {
seek.type = MPSEEK_ABSOLUTE;
direction = seek.amount > 0 ? 1 : -1;
seek.amount += get_current_time(mpctx);
}
hr_seek &= seek.type == MPSEEK_ABSOLUTE; // otherwise, no target PTS known
double demuxer_amount = seek.amount;
if (mpctx->timeline) {
bool need_reset = false;
demuxer_amount = timeline_set_from_time(mpctx, seek.amount,
&need_reset);
if (demuxer_amount == MP_NOPTS_VALUE) {
assert(!need_reset);
mpctx->stop_play = AT_END_OF_FILE;
// When seeking outside of the file, but not when ending last segment.
if (!timeline_fallthrough) {
clear_audio_output_buffers(mpctx);
reset_playback_state(mpctx);
}
return -1;
}
if (need_reset) {
reinit_video_chain(mpctx);
reinit_audio_chain(mpctx);
reinit_subs(mpctx, 0);
reinit_subs(mpctx, 1);
}
}
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 || direction < 0)
demuxer_style |= SEEK_BACKWARD;
else if (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;
demux_seek(mpctx->demuxer, demuxer_amount, demuxer_style);
// 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 = seek.amount;
if (seek.type != MPSEEK_ABSOLUTE)
main_new_pos = get_main_demux_pts(mpctx);
main_new_pos -= get_track_video_offset(mpctx, track);
demux_seek(track->demuxer, main_new_pos, SEEK_ABSOLUTE | SEEK_BACKWARD);
}
}
if (!timeline_fallthrough)
clear_audio_output_buffers(mpctx);
reset_playback_state(mpctx);
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->last_seek_pts = seek.amount;
// 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 = !hr_seek_very_exact;
mpctx->hrseek_pts = hr_seek ? seek.amount
: mpctx->timeline[mpctx->timeline_part].start;
}
mpctx->start_timestamp = mp_time_sec();
mpctx->sleeptime = 0;
mp_notify(mpctx, MPV_EVENT_SEEK, NULL);
mp_notify(mpctx, MPV_EVENT_TICK, NULL);
return 0;
}
// This combines consecutive seek requests.
void queue_seek(struct MPContext *mpctx, enum seek_type type, double amount,
int exact, bool immediate)
{
struct seek_params *seek = &mpctx->seek;
switch (type) {
case MPSEEK_RELATIVE:
seek->immediate |= immediate;
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,
.immediate = immediate,
};
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 < 0)
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). */
if (!mpctx->seek.immediate && mpctx->video_status < STATUS_READY &&
mp_time_sec() - mpctx->start_timestamp < 0.3)
return;
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 (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;
}
double get_playback_time(struct MPContext *mpctx)
{
double cur = get_current_time(mpctx);
double start = get_start_time(mpctx);
return cur >= start ? cur - start : 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 = get_start_time(mpctx);
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 > 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 {
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;
}
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)
{
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].start)
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);
}
talloc_free(name);
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 talloc_strdup(NULL, mpctx->chapters[chapter].name);
}
// 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 (chapter >= 0 && chapter < mpctx->num_chapters)
return mpctx->chapters[chapter].start;
return MP_NOPTS_VALUE;
}
int get_chapter_count(struct MPContext *mpctx)
{
return mpctx->num_chapters;
}
// Seek to a given chapter. Queues the seek.
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 = chapter_start_time(mpctx, chapter);
if (pts == MP_NOPTS_VALUE)
return false;
queue_seek(mpctx, MPSEEK_ABSOLUTE, pts, 0, true);
mpctx->last_chapter_seek = chapter;
mpctx->last_chapter_pts = pts;
return true;
}
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).
if (mpctx->d_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)
{
struct MPOpts *opts = mpctx->opts;
if (!mpctx->demuxer)
return;
int idle = -1;
demux_stream_control(mpctx->demuxer, STREAM_CTRL_GET_CACHE_IDLE, &idle);
struct demux_ctrl_reader_state s = {.idle = true, .ts_duration = -1};
demux_control(mpctx->demuxer, DEMUXER_CTRL_GET_READER_STATE, &s);
if (mpctx->restart_complete && idle != -1) {
if (mpctx->paused && mpctx->paused_for_cache) {
mpctx->cache_wait_time = MPCLAMP(mpctx->cache_wait_time, 1, 10);
if (!opts->cache_pausing || s.ts_duration >= mpctx->cache_wait_time
|| s.idle)
{
double elapsed_time = mp_time_sec() - 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);
}
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 = mp_time_sec();
}
}
}
// Also update cache properties.
bool busy = idle == 0;
if (!s.idle) {
busy |= idle != -1;
busy |= mp_client_event_is_registered(mpctx, MP_EVENT_CACHE_UPDATE);
}
if (busy || mpctx->next_cache_update > 0) {
double now = mp_time_sec();
if (mpctx->next_cache_update <= now) {
mpctx->next_cache_update = busy ? now + 0.25 : 0;
mp_notify(mpctx, MP_EVENT_CACHE_UPDATE, NULL);
}
if (mpctx->next_cache_update > 0) {
mpctx->sleeptime =
MPMIN(mpctx->sleeptime, mpctx->next_cache_update - now);
}
}
}
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;
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;
}
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;
}
if (mpctx->vo_pts_history_pts[0] == pts) // may be called multiple times
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;
if (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, true);
} 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, true);
} 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 (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, 0, true);
}
if (mpctx->video_status >= STATUS_EOF) {
if (mpctx->max_frames >= 0)
mpctx->stop_play = PT_NEXT_ENTRY;
if (mpctx->step_frames > 0 && !mpctx->paused)
pause_player(mpctx);
}
}
static void handle_loop_file(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
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, get_start_time(mpctx), 0, true);
if (opts->loop_file > 0)
opts->loop_file--;
}
}
static void handle_keep_open(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
if (opts->keep_open && mpctx->stop_play == AT_END_OF_FILE &&
!playlist_get_next(mpctx->playlist, 1) && opts->loop_times < 0)
{
mpctx->stop_play = KEEP_PLAYING;
if (mpctx->d_video)
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, 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.
// It also closes the VO if force_window or video display is not active.
void handle_force_window(struct MPContext *mpctx, bool reconfig)
{
// Don't interfere with real video playback
if (mpctx->d_video)
return;
if (!mpctx->opts->force_vo)
uninit_video_out(mpctx);
if (mpctx->video_out && (!mpctx->video_out->config_ok || reconfig)) {
struct vo *vo = mpctx->video_out;
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_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);
vo_control(vo, VOCTRL_SET_CURSOR_VISIBILITY, &(bool){true});
vo_control(vo, VOCTRL_RESTORE_SCREENSAVER, NULL);
vo_set_paused(vo, true);
vo_redraw(vo);
mp_notify(mpctx, MPV_EVENT_VIDEO_RECONFIG, NULL);
}
}
// 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 > 0.5) {
mpctx->last_idle_tick = mp_time_sec();
mp_notify(mpctx, MPV_EVENT_TICK, NULL);
}
}
}
void run_playloop(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
double endpts = get_play_end_pts(mpctx);
bool end_is_new_segment = false;
#if HAVE_ENCODING
if (encode_lavc_didfail(mpctx->encode_lavc_ctx)) {
mpctx->stop_play = PT_QUIT;
return;
}
#endif
update_demuxer_properties(mpctx);
if (mpctx->timeline) {
double end = mpctx->timeline[mpctx->timeline_part + 1].start;
if (endpts == MP_NOPTS_VALUE || end < endpts) {
end_is_new_segment = true;
endpts = end;
}
}
handle_cursor_autohide(mpctx);
handle_heartbeat_cmd(mpctx);
fill_audio_out_buffers(mpctx, endpts);
write_video(mpctx, endpts);
// We always make sure audio and video buffers are filled before actually
// starting playback. This code handles starting them at the same time.
if (mpctx->audio_status >= STATUS_READY &&
mpctx->video_status >= STATUS_READY)
{
if (mpctx->video_status == STATUS_READY) {
mpctx->video_status = STATUS_PLAYING;
get_relative_time(mpctx);
mpctx->sleeptime = 0;
}
if (mpctx->audio_status == STATUS_READY)
fill_audio_out_buffers(mpctx, endpts); // actually play prepared buffer
if (!mpctx->restart_complete) {
mpctx->hrseek_active = false;
mp_notify(mpctx, MPV_EVENT_PLAYBACK_RESTART, NULL);
mpctx->restart_complete = true;
if (!mpctx->playing_msg_shown) {
if (opts->playing_msg) {
char *msg =
mp_property_expand_escaped_string(mpctx, opts->playing_msg);
MP_INFO(mpctx, "%s\n", msg);
talloc_free(msg);
}
if (opts->osd_playing_msg) {
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;
}
}
if (mpctx->video_status == STATUS_EOF &&
mpctx->audio_status >= STATUS_PLAYING &&
mpctx->audio_status < STATUS_EOF)
{
mpctx->playback_pts = playing_audio_pts(mpctx);
}
handle_dummy_ticks(mpctx);
update_osd_msg(mpctx);
update_subtitles(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);
/* Handles terminating on end of playback (or switching to next segment).
*
* 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->d_audio || mpctx->d_video) && !prevent_eof &&
mpctx->audio_status == STATUS_EOF &&
mpctx->video_status == STATUS_EOF)
{
if (end_is_new_segment) {
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);
handle_loop_file(mpctx);
handle_keep_open(mpctx);
handle_sstep(mpctx);
if (mpctx->stop_play)
return;
handle_osd_redraw(mpctx);
mp_wait_events(mpctx, mpctx->sleeptime);
mpctx->sleeptime = 100.0; // infinite for all practical purposes
handle_pause_on_low_cache(mpctx);
mp_process_input(mpctx);
handle_backstep(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);
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) {
mp_notify(mpctx, MPV_EVENT_IDLE, NULL);
uninit_audio_out(mpctx);
handle_force_window(mpctx, true);
mpctx->sleeptime = 0;
need_reinit = false;
}
mp_idle(mpctx);
}
}
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