X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Fwx%2Fvideo_view.cc;h=c271cb65e83e213edb54f566c5b4098b351b968f;hb=c7044a1b444c2e5e7659bf5d34ed5ac73f5a6271;hp=22cad3979dbdc44cb18375f51e9487aa2a7ee09c;hpb=5eb8b5c3a1566aef638e9d9df03b88d320735092;p=dcpomatic.git

diff --git a/src/wx/video_view.cc b/src/wx/video_view.cc
index 22cad3979..c271cb65e 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.
 
@@ -18,45 +18,170 @@
 
 */
 
+
 #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::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")
+{
+
+}
+
 
 void
 VideoView::clear ()
 {
+	boost::mutex::scoped_lock lm (_mutex);
 	_player_video.first.reset ();
 	_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)
 {
-	DCPOMATIC_ASSERT (_viewer->butler());
-	_viewer->_gets++;
+	if (length() == dcpomatic::DCPTime()) {
+		return FAIL;
+	}
+
+	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 ? Butler::Behaviour::NON_BLOCKING : Butler::Behaviour::BLOCKING, &e);
+		if (e.code == Butler::Error::Code::DIED) {
+			LOG_ERROR ("Butler died with %1", e.summary());
 		}
+		if (!pv.first) {
+			return e.code == Butler::Error::Code::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
 		);
 
-	try {
-		_viewer->butler()->rethrow ();
-	} catch (DecodeError& e) {
-		error_dialog (get(), e.what());
+	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, 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 {};
+	}
+
+	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)));
+	}
+}
+
+
+wxColour
+VideoView::pad_colour () const
+{
+	if (_viewer->pad_black()) {
+		return wxColour(0, 0, 0);
+	} else if (gui_is_dark()) {
+		return wxColour(50, 50, 50);
+	} else {
+		return wxColour(240, 240, 240);
+	}
+}