Cope better with having no decoders.

diff --git a/src/wx/film_viewer.cc b/src/wx/film_viewer.cc
index 4e779a693d781b3a08c564d46698ea8b87ca2a5b..a619edf7c7bfa9fd70e8ed64fbb53d7828ef44a5 100644 (file)
--- a/src/wx/film_viewer.cc
+++ b/src/wx/film_viewer.cc
@@ -102,6 +102,9 @@ FilmViewer::film_changed (Film::Property p)
                o.decode_subtitles = true;
                o.video_sync = false;
                _decoders = decoder_factory (_film, o);
+               if (_decoders.video == 0) {
+                       break;
+               }
                _decoders.video->Video.connect (bind (&FilmViewer::process_video, this, _1, _2, _3));
                _decoders.video->OutputChanged.connect (boost::bind (&FilmViewer::decoder_changed, this));
                _decoders.video->set_subtitle_stream (_film->subtitle_stream());
@@ -121,7 +124,9 @@ FilmViewer::film_changed (Film::Property p)
                update_from_raw ();
                break;
        case Film::SUBTITLE_STREAM:
-               _decoders.video->set_subtitle_stream (_film->subtitle_stream ());
+               if (_decoders.video) {
+                       _decoders.video->set_subtitle_stream (_film->subtitle_stream ());
+               }
                break;
        default:
                break;
@@ -155,7 +160,7 @@ FilmViewer::set_film (shared_ptr<Film> f)
 void
 FilmViewer::decoder_changed ()
 {
-       if (_decoders.video->seek_to_last ()) {
+       if (_decoders.video == 0 || _decoders.video->seek_to_last ()) {
                return;
        }
 
@@ -167,7 +172,7 @@ FilmViewer::decoder_changed ()
 void
 FilmViewer::timer (wxTimerEvent &)
 {
-       if (!_film) {
+       if (!_film || !_decoders.video) {
                return;
        }
        
@@ -222,7 +227,7 @@ FilmViewer::paint_panel (wxPaintEvent &)
 void
 FilmViewer::slider_moved (wxScrollEvent &)
 {
-       if (!_film || !_film->length()) {
+       if (!_film || !_film->length() || !_decoders.video) {
                return;
        }
        
@@ -373,6 +378,11 @@ FilmViewer::get_frame ()
 {
        /* Clear our raw frame in case we don't get a new one */
        _raw_frame.reset ();
+
+       if (_decoders.video == 0) {
+               _display_frame.reset ();
+               return;
+       }
        
        try {
                _got_frame = false;