Rename ProRes export format to MOV / ProRes (#2067).

[dcpomatic.git] / src / wx / video_view.cc

diff --git a/src/wx/video_view.cc b/src/wx/video_view.cc
index 5f44c37d61779db3cced384221af5fdba9289506..387d4052fd87b1f02298b8c6ba8dbac083b43dc8 100644 (file)
--- a/src/wx/video_view.cc
+++ b/src/wx/video_view.cc
@@ -25,12 +25,18 @@
 #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)
        , _state_timer ("viewer")
@@ -124,6 +130,7 @@ VideoView::start ()
        boost::mutex::scoped_lock lm (_mutex);
        _dropped = 0;
        _errored = 0;
+       gettimeofday(&_dropped_check_period_start, nullptr);
 }
 
 
@@ -143,3 +150,26 @@ VideoView::reset_metadata (shared_ptr<const Film> film, dcp::Size player_video_c
        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)));
+       }
+}