/*
- 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 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)
-#ifdef DCPOMATIC_VARIANT_SWAROOP
- , _in_watermark (false)
-#endif
- , _video_frame_rate (0)
- , _dropped (0)
+ , _state_timer ("viewer")
{
}
+
void
VideoView::clear ()
{
_player_video.second = dcpomatic::DCPTime ();
}
-/** @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.
+
+/** Could be called from any thread.
+ * @param non_blocking true to return false quickly if no video is available quickly.
+ * @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;
+ if (length() == dcpomatic::DCPTime()) {
+ return FAIL;
}
- DCPOMATIC_ASSERT (_viewer->butler());
- _viewer->_gets++;
+ auto butler = _viewer->butler ();
+ if (!butler) {
+ return FAIL;
+ }
+ add_get ();
boost::mutex::scoped_lock lm (_mutex);
do {
Butler::Error e;
- _player_video = _viewer->butler()->get_video (!non_blocking, &e);
- if (!_player_video.first && e == Butler::AGAIN) {
- return false;
+ 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) {
+ return e.code == Butler::Error::AGAIN ? AGAIN : FAIL;
}
+ _player_video = pv;
} while (
_player_video.first &&
- _viewer->film()->three_d() &&
- _viewer->_eyes != _player_video.first->eyes() &&
- _player_video.first->eyes() != EYES_BOTH
+ _three_d &&
+ _eyes != _player_video.first->eyes() &&
+ _player_video.first->eyes() != Eyes::BOTH
);
- return true;
+ if (_player_video.first && _player_video.first->error()) {
+ ++_errored;
+ }
+
+ 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 */
-int
+
+/** @return Time in ms until the next frame is due, or empty if nothing is due */
+optional<int>
VideoView::time_until_next_frame () const
{
if (length() == dcpomatic::DCPTime()) {
/* There's no content, so this doesn't matter */
- return 0;
+ 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)
+{
+ auto pv = player_video ();
+ if (!pv.first) {
+ return false;
+ }
+
+ if (!pv.first->reset_metadata(film, player_video_container_size)) {
+ return false;
+ }
+
+ update ();
+ 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)));
+ }
}