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mpv/player/misc.c

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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 Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stddef.h>
#include <stdbool.h>
#include <pthread.h>
#include <assert.h>
#include "config.h"
#include "mpv_talloc.h"
#include "osdep/io.h"
#include "osdep/timer.h"
#include "osdep/threads.h"
#include "common/msg.h"
#include "options/options.h"
#include "options/m_property.h"
#include "options/m_config.h"
#include "common/common.h"
#include "common/global.h"
#include "common/encode.h"
#include "common/playlist.h"
#include "input/input.h"
#include "audio/out/ao.h"
#include "demux/demux.h"
#include "stream/stream.h"
#include "video/out/vo.h"
#include "core.h"
#include "command.h"
double rel_time_to_abs(struct MPContext *mpctx, struct m_rel_time t)
{
double length = get_time_length(mpctx);
switch (t.type) {
case REL_TIME_ABSOLUTE:
return t.pos;
case REL_TIME_RELATIVE:
if (t.pos >= 0) {
return t.pos;
} else {
if (length >= 0)
return MPMAX(length + t.pos, 0.0);
}
break;
case REL_TIME_PERCENT:
if (length >= 0)
return length * (t.pos / 100.0);
break;
case REL_TIME_CHAPTER:
if (chapter_start_time(mpctx, t.pos) != MP_NOPTS_VALUE)
return chapter_start_time(mpctx, t.pos);
break;
}
return MP_NOPTS_VALUE;
}
double get_play_end_pts(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
double end = MP_NOPTS_VALUE;
if (opts->play_end.type) {
end = rel_time_to_abs(mpctx, opts->play_end);
} else if (opts->play_length.type) {
double start = rel_time_to_abs(mpctx, opts->play_start);
if (start == MP_NOPTS_VALUE)
start = 0;
double length = rel_time_to_abs(mpctx, opts->play_length);
if (length != MP_NOPTS_VALUE)
end = start + length;
}
if (opts->chapterrange[1] > 0) {
double cend = chapter_start_time(mpctx, opts->chapterrange[1]);
if (cend != MP_NOPTS_VALUE && (end == MP_NOPTS_VALUE || cend < end))
end = cend;
}
return end;
}
float mp_get_cache_percent(struct MPContext *mpctx)
{
if (mpctx->demuxer) {
int64_t size = -1;
int64_t fill = -1;
demux_stream_control(mpctx->demuxer, STREAM_CTRL_GET_CACHE_SIZE, &size);
demux_stream_control(mpctx->demuxer, STREAM_CTRL_GET_CACHE_FILL, &fill);
if (size > 0 && fill >= 0)
return fill / (size / 100.0);
}
return -1;
}
bool mp_get_cache_idle(struct MPContext *mpctx)
{
int idle = 0;
if (mpctx->demuxer)
demux_stream_control(mpctx->demuxer, STREAM_CTRL_GET_CACHE_IDLE, &idle);
return idle;
}
void update_vo_playback_state(struct MPContext *mpctx)
{
if (mpctx->video_out) {
struct voctrl_playback_state oldstate = mpctx->vo_playback_state;
struct voctrl_playback_state newstate = {
.playing = mpctx->playing,
.paused = mpctx->paused,
.percent_pos = get_percent_pos(mpctx),
};
if (oldstate.playing != newstate.playing ||
oldstate.paused != newstate.paused ||
oldstate.percent_pos != newstate.percent_pos) {
vo_control(mpctx->video_out,
VOCTRL_UPDATE_PLAYBACK_STATE, &newstate);
mpctx->vo_playback_state = newstate;
}
} else {
mpctx->vo_playback_state = (struct voctrl_playback_state){ 0 };
}
}
void update_window_title(struct MPContext *mpctx, bool force)
{
if (!mpctx->video_out && !mpctx->ao) {
talloc_free(mpctx->last_window_title);
mpctx->last_window_title = NULL;
return;
}
char *title = mp_property_expand_string(mpctx, mpctx->opts->wintitle);
if (!mpctx->last_window_title || force ||
strcmp(title, mpctx->last_window_title) != 0)
{
talloc_free(mpctx->last_window_title);
mpctx->last_window_title = talloc_steal(mpctx, title);
if (mpctx->video_out)
vo_control(mpctx->video_out, VOCTRL_UPDATE_WINDOW_TITLE, title);
if (mpctx->ao) {
ao_control(mpctx->ao, AOCONTROL_UPDATE_STREAM_TITLE, title);
}
} else {
talloc_free(title);
}
}
void error_on_track(struct MPContext *mpctx, struct track *track)
{
if (!track)
return;
mp_deselect_track(mpctx, track);
if (track) {
if (track->type == STREAM_AUDIO)
MP_INFO(mpctx, "Audio: no audio\n");
if (track->type == STREAM_VIDEO)
MP_INFO(mpctx, "Video: no video\n");
if (mpctx->opts->stop_playback_on_init_failure ||
(!mpctx->current_track[0][STREAM_AUDIO] &&
!mpctx->current_track[0][STREAM_VIDEO]))
{
if (!mpctx->stop_play)
mpctx->stop_play = PT_ERROR;
if (mpctx->error_playing >= 0)
mpctx->error_playing = MPV_ERROR_NOTHING_TO_PLAY;
}
mpctx->sleeptime = 0;
}
}
int stream_dump(struct MPContext *mpctx, const char *source_filename)
{
struct MPOpts *opts = mpctx->opts;
stream_t *stream = stream_open(source_filename, mpctx->global);
if (!stream)
return -1;
int64_t size = stream_get_size(stream);
stream_set_capture_file(stream, opts->stream_dump);
while (mpctx->stop_play == KEEP_PLAYING && !stream->eof) {
if (!opts->quiet && ((stream->pos / (1024 * 1024)) % 2) == 1) {
uint64_t pos = stream->pos;
MP_MSG(mpctx, MSGL_STATUS, "Dumping %lld/%lld...",
(long long int)pos, (long long int)size);
}
stream_fill_buffer(stream);
mp_process_input(mpctx);
}
free_stream(stream);
return 0;
}
void merge_playlist_files(struct playlist *pl)
{
if (!pl->first)
return;
char *edl = talloc_strdup(NULL, "edl://");
for (struct playlist_entry *e = pl->first; e; e = e->next) {
if (e != pl->first)
edl = talloc_strdup_append_buffer(edl, ";");
// Escape if needed
if (e->filename[strcspn(e->filename, "=%,;\n")] ||
bstr_strip(bstr0(e->filename)).len != strlen(e->filename))
{
// %length%
edl = talloc_asprintf_append_buffer(edl, "%%%zd%%", strlen(e->filename));
}
edl = talloc_strdup_append_buffer(edl, e->filename);
}
playlist_clear(pl);
playlist_add_file(pl, edl);
talloc_free(edl);
}
// Create a talloc'ed copy of mpctx->global. It contains a copy of the global
// option struct. It still just references some things though, like mp_log.
// The main purpose is letting threads access the option struct without the
// need for additional synchronization.
struct mpv_global *create_sub_global(struct MPContext *mpctx)
{
struct mpv_global *new = talloc_ptrtype(NULL, new);
struct m_config *new_config = m_config_dup(new, mpctx->mconfig);
*new = (struct mpv_global){
.log = mpctx->global->log,
.opts = new_config->optstruct,
.client_api = mpctx->clients,
};
return new;
}
struct wrapper_args {
struct MPContext *mpctx;
void (*thread_fn)(void *);
void *thread_arg;
pthread_mutex_t mutex;
bool done;
};
static void *thread_wrapper(void *pctx)
{
struct wrapper_args *args = pctx;
mpthread_set_name("opener");
args->thread_fn(args->thread_arg);
pthread_mutex_lock(&args->mutex);
args->done = true;
pthread_mutex_unlock(&args->mutex);
mp_input_wakeup(args->mpctx->input); // this interrupts mp_idle()
return NULL;
}
// Run the thread_fn in a new thread. Wait until the thread returns, but while
// waiting, process input and input commands.
int mpctx_run_reentrant(struct MPContext *mpctx, void (*thread_fn)(void *arg),
void *thread_arg)
{
struct wrapper_args args = {mpctx, thread_fn, thread_arg};
pthread_mutex_init(&args.mutex, NULL);
bool success = false;
pthread_t thread;
if (pthread_create(&thread, NULL, thread_wrapper, &args))
goto done;
while (!success) {
mp_idle(mpctx);
if (mpctx->stop_play)
mp_cancel_trigger(mpctx->playback_abort);
pthread_mutex_lock(&args.mutex);
success |= args.done;
pthread_mutex_unlock(&args.mutex);
}
pthread_join(thread, NULL);
done:
pthread_mutex_destroy(&args.mutex);
return success ? 0 : -1;
}
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