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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 <errno.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);
// Relative times are an offset to the start of the file.
double start = 0;
if (mpctx->demuxer && !mpctx->opts->rebase_start_time)
start = mpctx->demuxer->start_time;
switch (t.type) {
case REL_TIME_ABSOLUTE:
return t.pos;
case REL_TIME_RELATIVE:
if (t.pos >= 0) {
return start + t.pos;
} else {
if (length >= 0)
return start + MPMAX(length + t.pos, 0.0);
}
break;
case REL_TIME_PERCENT:
if (length >= 0)
return start + length * (t.pos / 100.0);
break;
case REL_TIME_CHAPTER:
return chapter_start_time(mpctx, t.pos); // already absolute time
}
return MP_NOPTS_VALUE;
}
static double get_play_end_pts_setting(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
double end = rel_time_to_abs(mpctx, opts->play_end);
double length = rel_time_to_abs(mpctx, opts->play_length);
if (length != MP_NOPTS_VALUE) {
double start = get_play_start_pts(mpctx);
if (end == MP_NOPTS_VALUE || start + length < end)
end = start + length;
}
return end;
}
// Return absolute timestamp against which currently playing media should be
// clipped. Returns MP_NOPTS_VALUE if no clipping should happen.
double get_play_end_pts(struct MPContext *mpctx)
{
double end = get_play_end_pts_setting(mpctx);
double ab[2];
if (mpctx->ab_loop_clip && get_ab_loop_times(mpctx, ab)) {
if (end == MP_NOPTS_VALUE || end > ab[1])
end = ab[1];
}
return end;
}
// Get the absolute PTS at which playback should start.
// Never returns MP_NOPTS_VALUE.
double get_play_start_pts(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
double res = rel_time_to_abs(mpctx, opts->play_start);
if (res == MP_NOPTS_VALUE)
res = get_start_time(mpctx, mpctx->play_dir);
return res;
}
// Get timestamps to use for AB-loop. Returns false iff any of the timestamps
// are invalid and/or AB-loops are currently disabled, and set t[] to either
// the user options or NOPTS on best effort basis.
bool get_ab_loop_times(struct MPContext *mpctx, double t[2])
{
struct MPOpts *opts = mpctx->opts;
int dir = mpctx->play_dir;
t[0] = opts->ab_loop[0];
t[1] = opts->ab_loop[1];
if (t[0] == MP_NOPTS_VALUE || t[1] == MP_NOPTS_VALUE || t[0] == t[1])
return false;
if (t[0] * dir > t[1] * dir)
MPSWAP(double, t[0], t[1]);
return true;
}
double get_track_seek_offset(struct MPContext *mpctx, struct track *track)
{
struct MPOpts *opts = mpctx->opts;
if (track->selected) {
if (track->type == STREAM_AUDIO)
return -opts->audio_delay;
if (track->type == STREAM_SUB)
return -opts->subs_rend->sub_delay;
}
return 0;
}
void issue_refresh_seek(struct MPContext *mpctx, enum seek_precision min_prec)
{
// let queued seeks execute at a slightly later point
if (mpctx->seek.type) {
mp_wakeup_core(mpctx);
return;
}
// repeat currently ongoing seeks
if (mpctx->current_seek.type) {
mpctx->seek = mpctx->current_seek;
mp_wakeup_core(mpctx);
return;
}
queue_seek(mpctx, MPSEEK_ABSOLUTE, get_current_time(mpctx), min_prec, 0);
}
void update_vo_playback_state(struct MPContext *mpctx)
{
if (mpctx->video_out && mpctx->video_out->config_ok) {
struct voctrl_playback_state oldstate = mpctx->vo_playback_state;
struct voctrl_playback_state newstate = {
.taskbar_progress = mpctx->opts->vo->taskbar_progress,
.playing = mpctx->playing,
.paused = mpctx->paused,
.percent_pos = get_percent_pos(mpctx),
};
if (oldstate.taskbar_progress != newstate.taskbar_progress ||
oldstate.playing != newstate.playing ||
oldstate.paused != newstate.paused ||
oldstate.percent_pos != newstate.percent_pos)
{
// Don't update progress bar if it was and still is hidden
if ((oldstate.playing && oldstate.taskbar_progress) ||
(newstate.playing && newstate.taskbar_progress))
{
vo_control_async(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 || !track->selected)
return;
mp_deselect_track(mpctx, 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->vo_chain || mpctx->ao_chain))
{
if (!mpctx->stop_play)
mpctx->stop_play = PT_ERROR;
if (mpctx->error_playing >= 0)
mpctx->error_playing = MPV_ERROR_NOTHING_TO_PLAY;
}
mp_wakeup_core(mpctx);
}
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);
FILE *dest = fopen(opts->stream_dump, "wb");
if (!dest) {
MP_ERR(mpctx, "Error opening dump file: %s\n", mp_strerror(errno));
return -1;
}
bool ok = true;
while (mpctx->stop_play == KEEP_PLAYING && ok) {
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);
}
uint8_t buf[4096];
int len = stream_read(stream, buf, sizeof(buf));
if (!len) {
ok &= stream->eof;
break;
}
ok &= fwrite(buf, len, 1, dest) == 1;
mp_wakeup_core(mpctx); // don't actually sleep
mp_idle(mpctx); // but process input
}
ok &= fclose(dest) == 0;
free_stream(stream);
return ok ? 0 : -1;
}
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);
}
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