/*
- Copyright (C) 2019 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2019-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
*/
+
#include "video_view.h"
#include "wx_util.h"
#include "film_viewer.h"
#include "lib/butler.h"
#include "lib/dcpomatic_log.h"
#include <boost/optional.hpp>
+#include <sys/time.h>
+
using std::pair;
-using boost::shared_ptr;
+using std::shared_ptr;
using boost::optional;
+
+static constexpr int TOO_MANY_DROPPED_FRAMES = 20;
+static constexpr int TOO_MANY_DROPPED_PERIOD = 5.0;
+
+
VideoView::VideoView (FilmViewer* viewer)
: _viewer (viewer)
, _state_timer ("viewer")
- , _video_frame_rate (0)
- , _eyes (EYES_LEFT)
- , _three_d (false)
- , _dropped (0)
- , _errored (0)
- , _gets (0)
{
}
+
void
VideoView::clear ()
{
_player_video.second = dcpomatic::DCPTime ();
}
+
/** Could be called from any thread.
* @param non_blocking true to return false quickly if no video is available quickly.
- * @return false if we gave up because it would take too long, otherwise true.
+ * @return FAIL if there's no frame, AGAIN if the method should be called again, or SUCCESS
+ * if there is a frame.
*/
-bool
+VideoView::NextFrameResult
VideoView::get_next_frame (bool non_blocking)
{
if (length() == dcpomatic::DCPTime()) {
- return true;
+ return FAIL;
}
- shared_ptr<Butler> butler = _viewer->butler ();
+ auto butler = _viewer->butler ();
if (!butler) {
- return false;
+ return FAIL;
}
add_get ();
do {
Butler::Error e;
- pair<shared_ptr<PlayerVideo>, dcpomatic::DCPTime> pv = butler->get_video (!non_blocking, &e);
+ auto pv = butler->get_video (!non_blocking, &e);
if (e.code == Butler::Error::DIED) {
LOG_ERROR ("Butler died with %1", e.summary());
}
- if (!pv.first && e.code == Butler::Error::AGAIN) {
- return false;
+ if (!pv.first) {
+ return e.code == Butler::Error::AGAIN ? AGAIN : FAIL;
}
_player_video = pv;
} while (
_player_video.first &&
_three_d &&
_eyes != _player_video.first->eyes() &&
- _player_video.first->eyes() != EYES_BOTH
+ _player_video.first->eyes() != Eyes::BOTH
);
if (_player_video.first && _player_video.first->error()) {
++_errored;
}
- return true;
+ return SUCCESS;
}
+
dcpomatic::DCPTime
VideoView::one_video_frame () const
{
return dcpomatic::DCPTime::from_frames (1, video_frame_rate());
}
+
/** @return Time in ms until the next frame is due, or empty if nothing is due */
optional<int>
VideoView::time_until_next_frame () const
return optional<int>();
}
- dcpomatic::DCPTime const next = position() + one_video_frame();
- dcpomatic::DCPTime const time = _viewer->audio_time().get_value_or(position());
+ auto const next = position() + one_video_frame();
+ auto const time = _viewer->audio_time().get_value_or(position());
if (next < time) {
return 0;
}
return (next.seconds() - time.seconds()) * 1000;
}
+
void
VideoView::start ()
{
boost::mutex::scoped_lock lm (_mutex);
_dropped = 0;
_errored = 0;
+ gettimeofday(&_dropped_check_period_start, nullptr);
}
+
bool
VideoView::reset_metadata (shared_ptr<const Film> film, dcp::Size player_video_container_size)
{
- pair<shared_ptr<PlayerVideo>, dcpomatic::DCPTime> pv = player_video ();
+ auto pv = player_video ();
if (!pv.first) {
return false;
}
return true;
}
+
+void
+VideoView::add_dropped ()
+{
+ bool too_many = false;
+
+ {
+ boost::mutex::scoped_lock lm (_mutex);
+ ++_dropped;
+ if (_dropped > TOO_MANY_DROPPED_FRAMES) {
+ struct timeval now;
+ gettimeofday (&now, nullptr);
+ double const elapsed = seconds(now) - seconds(_dropped_check_period_start);
+ too_many = elapsed < TOO_MANY_DROPPED_PERIOD;
+ _dropped = 0;
+ _dropped_check_period_start = now;
+ }
+ }
+
+ if (too_many) {
+ emit (boost::bind(boost::ref(TooManyDropped)));
+ }
+}