Add FilmViewer::time_until_next_frame.

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

diff --git a/src/wx/simple_video_view.cc b/src/wx/simple_video_view.cc
index 9aa73fe7ff35d0a7446a93b71e304cffab405f7d..c195bbc35489024d8fcf435e1dee57d0291755c1 100644 (file)
--- a/src/wx/simple_video_view.cc
+++ b/src/wx/simple_video_view.cc
@@ -21,6 +21,7 @@
 #include "simple_video_view.h"
 #include "film_viewer.h"
 #include "wx_util.h"
+#include "closed_captions_dialog.h"
 #include "lib/image.h"
 #include "lib/dcpomatic_log.h"
 #include "lib/butler.h"
@@ -31,6 +32,7 @@
 using std::max;
 using std::string;
 using boost::optional;
+using boost::shared_ptr;
 using namespace dcpomatic;
 
 SimpleVideoView::SimpleVideoView (FilmViewer* viewer, wxWindow* parent)
@@ -147,7 +149,7 @@ SimpleVideoView::timer ()
                return;
        }
 
-       _viewer->get (false);
+       get (false);
        DCPTime const next = _viewer->position() + _viewer->one_video_frame();
 
        if (next >= _viewer->film()->length()) {
@@ -157,9 +159,113 @@ SimpleVideoView::timer ()
        }
 
        LOG_DEBUG_PLAYER("%1 -> %2; delay %3", next.seconds(), _viewer->time().seconds(), max((next.seconds() - _viewer->time().seconds()) * 1000, 1.0));
-       _timer.Start (max ((next.seconds() - _viewer->time().seconds()) * 1000, 1.0), wxTIMER_ONE_SHOT);
+       _timer.Start (_viewer->time_until_next_frame()), wxTIMER_ONE_SHOT);
 
-       if (_viewer->_butler) {
-               _viewer->_butler->rethrow ();
+       if (_viewer->butler()) {
+               _viewer->butler()->rethrow ();
        }
 }
+
+void
+SimpleVideoView::start ()
+{
+       timer ();
+}
+
+/** Try to get a frame from the butler and display it.
+ *  @param lazy true to return false quickly if no video is available quickly (i.e. we are waiting for the butler).
+ *  false to ask the butler to block until it has video (unless it is suspended).
+ *  @return true on success, false if we did nothing because it would have taken too long.
+ */
+bool
+SimpleVideoView::get (bool lazy)
+{
+       DCPOMATIC_ASSERT (_viewer->butler());
+       _viewer->_gets++;
+
+       do {
+               Butler::Error e;
+               _player_video = _viewer->butler()->get_video (!lazy, &e);
+               if (!_player_video.first && e == Butler::AGAIN) {
+                       if (lazy) {
+                               /* No video available; return saying we failed */
+                               return false;
+                       } else {
+                               /* Player was suspended; come back later */
+                               signal_manager->when_idle (boost::bind(&SimpleVideoView::get, this, false));
+                               return false;
+                       }
+               }
+       } while (
+               _player_video.first &&
+               _viewer->film()->three_d() &&
+               _viewer->_eyes != _player_video.first->eyes() &&
+               _player_video.first->eyes() != EYES_BOTH
+               );
+
+       try {
+               _viewer->butler()->rethrow ();
+       } catch (DecodeError& e) {
+               error_dialog (get(), e.what());
+       }
+
+       display_player_video ();
+       _viewer->PositionChanged ();
+
+       return true;
+}
+
+void
+SimpleVideoView::display_player_video ()
+{
+       if (!_player_video.first) {
+               set_image (shared_ptr<Image>());
+               _viewer->refresh_view ();
+               return;
+       }
+
+       if (_viewer->playing() && (_viewer->time() - _player_video.second) > _viewer->one_video_frame()) {
+               /* Too late; just drop this frame before we try to get its image (which will be the time-consuming
+                  part if this frame is J2K).
+               */
+               _viewer->_video_position = _player_video.second;
+               ++_viewer->_dropped;
+               return;
+       }
+
+       /* In an ideal world, what we would do here is:
+        *
+        * 1. convert to XYZ exactly as we do in the DCP creation path.
+        * 2. convert back to RGB for the preview display, compensating
+        *    for the monitor etc. etc.
+        *
+        * but this is inefficient if the source is RGB.  Since we don't
+        * (currently) care too much about the precise accuracy of the preview's
+        * colour mapping (and we care more about its speed) we try to short-
+        * circuit this "ideal" situation in some cases.
+        *
+        * The content's specified colour conversion indicates the colourspace
+        * which the content is in (according to the user).
+        *
+        * PlayerVideo::image (bound to PlayerVideo::force) will take the source
+        * image and convert it (from whatever the user has said it is) to RGB.
+        */
+
+       _viewer->_state_timer.set ("get image");
+
+       set_image (
+               _player_video.first->image(bind(&PlayerVideo::force, _1, AV_PIX_FMT_RGB24), false, true)
+               );
+
+       _viewer->_state_timer.set ("ImageChanged");
+       _viewer->ImageChanged (_player_video.first);
+       _viewer->_state_timer.unset ();
+
+       _viewer->_video_position = _player_video.second;
+       _viewer->_inter_position = _player_video.first->inter_position ();
+       _viewer->_inter_size = _player_video.first->inter_size ();
+
+       _viewer->refresh_view ();
+
+       _viewer->_closed_captions_dialog->update (_viewer->time());
+}