X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Fwx%2Fvideo_view.cc;h=387d4052fd87b1f02298b8c6ba8dbac083b43dc8;hb=6693132ed6fb863fdff496f42028d25f55eb8bc4;hp=7eea4b786fba72917e3f9285997767545e88ea74;hpb=6abf2fdd53b14608561fcc1900507daea5b79fb7;p=dcpomatic.git

diff --git a/src/wx/video_view.cc b/src/wx/video_view.cc
index 7eea4b786..387d4052f 100644
--- a/src/wx/video_view.cc
+++ b/src/wx/video_view.cc
@@ -1,5 +1,5 @@
 /*
-    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.
 
@@ -18,33 +18,33 @@
 
 */
 
+
 #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)
-#ifdef DCPOMATIC_VARIANT_SWAROOP
-	, _in_watermark (false)
-#endif
 	, _state_timer ("viewer")
-	, _video_frame_rate (0)
-	, _eyes (EYES_LEFT)
-	, _three_d (false)
-	, _dropped (0)
-	, _errored (0)
-	, _gets (0)
 {
 
 }
 
+
 void
 VideoView::clear ()
 {
@@ -53,20 +53,22 @@ 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 ();
 
@@ -74,34 +76,36 @@ VideoView::get_next_frame (bool non_blocking)
 
 	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
@@ -111,31 +115,34 @@ 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::refresh_metadata (shared_ptr<const Film> film, dcp::Size video_container_size, dcp::Size film_frame_size)
+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;
 	}
 
-	if (!pv.first->reset_metadata (film, video_container_size, film_frame_size)) {
+	if (!pv.first->reset_metadata(film, player_video_container_size)) {
 		return false;
 	}
 
@@ -143,3 +150,26 @@ VideoView::refresh_metadata (shared_ptr<const Film> film, dcp::Size video_contai
 	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)));
+	}
+}