Add and use dB/linear conversion functions.

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

diff --git a/src/wx/audio_mapping_view.cc b/src/wx/audio_mapping_view.cc
index 140f18d60341207cd03ad2bdc89a4999c32e4a56..937dea5588b453e9992e9c991c4ff94f9f86441d 100644 (file)
--- a/src/wx/audio_mapping_view.cc
+++ b/src/wx/audio_mapping_view.cc
@@ -308,7 +308,7 @@ AudioMappingView::paint_indicators (wxDC& dc)
                                        )
                                );
 
-                       float const value_dB = 20 * log10 (_map.get(y, x));
+                       float const value_dB = linear_to_db(_map.get(y, x));
                        int const range = 18;
                        int height = 0;
                        if (value_dB > -range) {
@@ -504,7 +504,7 @@ AudioMappingView::full ()
 void
 AudioMappingView::minus6dB ()
 {
-       _map.set (_menu_input, _menu_output, pow (10, -6.0 / 20));
+       _map.set (_menu_input, _menu_output, db_to_linear(-6));
        map_values_changed ();
 }
 
@@ -599,7 +599,7 @@ AudioMappingView::motion (wxMouseEvent& ev)
                                        safe_output_channel_name(channels->second)
                                        );
                        } else {
-                               float const dB = 20 * log10 (gain);
+                               float const dB = linear_to_db(gain);
                                s = wxString::Format (
                                        _("Audio will be passed from %s channel %s to %s channel %s with gain %.1fdB."),
                                        _from,