Add an output audio matrix (#1482).

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

diff --git a/src/wx/film_viewer.cc b/src/wx/film_viewer.cc
index 893e1bf0fe4569dec8ede2d80bf75acc213b7beb..509cc9426dd279ed14e960f6b12a8a4f5f2263dc 100644 (file)
--- a/src/wx/film_viewer.cc
+++ b/src/wx/film_viewer.cc
@@ -209,40 +209,17 @@ FilmViewer::recreate_butler ()
                return;
        }
 
-       AudioMapping map = AudioMapping (_film->audio_channels(), _audio_channels);
-
-       if (_audio_channels != 2 || _film->audio_channels() < 3) {
-               for (int i = 0; i < min (_film->audio_channels(), _audio_channels); ++i) {
-                       map.set (i, i, 1);
-               }
-       } else {
-               /* Special case: stereo output, at least 3 channel input.
-                  Map so that Lt = L(-3dB) + Ls(-3dB) + C(-6dB) + Lfe(-10dB)
-                              Rt = R(-3dB) + Rs(-3dB) + C(-6dB) + Lfe(-10dB)
-               */
-               if (_film->audio_channels() > 0) {
-                       map.set (dcp::LEFT,   0, 1 / sqrt(2)); // L -> Lt
-               }
-               if (_film->audio_channels() > 1) {
-                       map.set (dcp::RIGHT,  1, 1 / sqrt(2)); // R -> Rt
-               }
-               if (_film->audio_channels() > 2) {
-                       map.set (dcp::CENTRE, 0, 1 / 2.0); // C -> Lt
-                       map.set (dcp::CENTRE, 1, 1 / 2.0); // C -> Rt
-               }
-               if (_film->audio_channels() > 3) {
-                       map.set (dcp::LFE,    0, 1 / sqrt(10)); // Lfe -> Lt
-                       map.set (dcp::LFE,    1, 1 / sqrt(10)); // Lfe -> Rt
-               }
-               if (_film->audio_channels() > 4) {
-                       map.set (dcp::LS,     0, 1 / sqrt(2)); // Ls -> Lt
-               }
-               if (_film->audio_channels() > 5) {
-                       map.set (dcp::RS,     1, 1 / sqrt(2)); // Rs -> Rt
-               }
-       }
+       _butler.reset(
+               new Butler(
+                       _player,
+                       Config::instance()->audio_mapping(_audio_channels),
+                       _audio_channels,
+                       bind(&PlayerVideo::force, _1, AV_PIX_FMT_RGB24),
+                       false,
+                       true
+                       )
+               );
 
-       _butler.reset (new Butler(_player, map, _audio_channels, bind(&PlayerVideo::force, _1, AV_PIX_FMT_RGB24), false, true));
        if (!Config::instance()->sound() && !_audio.isStreamOpen()) {
                _butler->disable_audio ();
        }
@@ -626,6 +603,11 @@ FilmViewer::config_changed (Config::Property p)
        }
 #endif
 
+       if (p == Config::AUDIO_MAPPING) {
+               recreate_butler ();
+               return;
+       }
+
        if (p != Config::SOUND && p != Config::SOUND_OUTPUT) {
                return;
        }