Add option to disable rendering the sample averages in the waveform renderer

Originally committed to SVN as r6063.

aegisub/src/audio_display.cpp

@@ -1252,6 +1252,7 @@ void AudioDisplay::OnAudioOpen(AudioProvider *provider)
 			connections.push_back(controller->AddSelectionChangedListener(&AudioDisplay::OnSelectionChanged, this));
 			connections.push_back(controller->AddStyleRangesChangedListener(&AudioDisplay::OnStyleRangesChanged, this));
 			connections.push_back(OPT_SUB("Audio/Spectrum", &AudioDisplay::ReloadRenderingSettings, this));
+			connections.push_back(OPT_SUB("Audio/Display/Waveform Style", &AudioDisplay::ReloadRenderingSettings, this));
 			connections.push_back(OPT_SUB("Colour/Audio Display/Spectrum", &AudioDisplay::ReloadRenderingSettings, this));
 			connections.push_back(OPT_SUB("Colour/Audio Display/Waveform", &AudioDisplay::ReloadRenderingSettings, this));
 			connections.push_back(OPT_SUB("Audio/Renderer/Spectrum/Quality", &AudioDisplay::ReloadRenderingSettings, this));

aegisub/src/audio_renderer_waveform.cpp

@@ -48,12 +48,22 @@
 #include "block_cache.h"
 #include "colorspace.h"
 #include "include/aegisub/audio_provider.h"
+#include "main.h"
+
+enum {
+	/// Only render the peaks
+	Waveform_MaxOnly = 0,
+	/// Render the peaks and averages
+	Waveform_MaxAvg,
+	Waveform_Continuous
+};
 
 AudioWaveformRenderer::AudioWaveformRenderer(std::string const& color_scheme_name)
 : colors_normal(new AudioColorScheme(6, color_scheme_name, AudioStyle_Normal))
 , colors_selected(new AudioColorScheme(6, color_scheme_name, AudioStyle_Selected))
 , colors_inactive(new AudioColorScheme(6, color_scheme_name, AudioStyle_Inactive))
 , audio_buffer(0)
+, render_averages(OPT_GET("Audio/Display/Waveform Style")->GetInt() == Waveform_MaxAvg)
 {
 }
 
@@ -123,12 +133,18 @@ void AudioWaveformRenderer::Render(wxBitmap &bmp, int start, AudioRenderingStyle
 
 		dc.SetPen(pen_peaks);
 		dc.DrawLine(x, midpoint - peak_max, x, midpoint - peak_min);
-		dc.SetPen(pen_avgs);
-		dc.DrawLine(x, midpoint - avg_max, x, midpoint - avg_min);
+		if (render_averages) {
+			dc.SetPen(pen_avgs);
+			dc.DrawLine(x, midpoint - avg_max, x, midpoint - avg_min);
+		}
 	}
 
 	// Horizontal zero-point line
-	dc.SetPen(wxPen(pal->get(1.0f)));
+	if (render_averages)
+		dc.SetPen(wxPen(pal->get(1.0f)));
+	else
+		dc.SetPen(pen_peaks);
+
 	dc.DrawLine(0, midpoint, rect.width, midpoint);
 }
 
@@ -173,3 +189,10 @@ const AudioColorScheme *AudioWaveformRenderer::GetColorScheme(AudioRenderingStyl
 		default: return colors_normal.get();
 	}
 }
+
+wxArrayString AudioWaveformRenderer::GetWaveformStyles() {
+	wxArrayString ret;
+	ret.push_back(_("Maximum"));
+	ret.push_back(_("Maximum + Average"));
+	return ret;
+}

aegisub/src/audio_renderer_waveform.h

@@ -58,6 +58,9 @@ class AudioWaveformRenderer : public AudioRendererBitmapProvider {
 	/// Pre-allocated buffer for audio fetched from provider
 	char *audio_buffer;
 
+	/// Whether to render max+avg or just max
+	bool render_averages;
+
 	/// Get the color scheme for a rendering style
 	const AudioColorScheme *GetColorScheme(AudioRenderingStyle style) const;
 
@@ -86,4 +89,7 @@ public:
 	///
 	/// Does nothing for waveform renderer, since it does not have a backend cache
 	void AgeCache(size_t max_size) { }
+
+	/// Get a list of waveform rendering modes
+	static wxArrayString GetWaveformStyles();
 };

aegisub/src/libresrc/default_config.json

@@ -49,7 +49,8 @@
 			"Snap" : {
 				"Keyframes" : false,
 				"Other Lines" : false
-			}
+			},
+			"Waveform Style" : 1
 		},
 		"Downmixer" : "ConvertToMono",
 		"Grab Times on Select" : true,

aegisub/src/preferences.cpp

@@ -41,6 +41,7 @@
 
 #include "preferences.h"
 
+#include "audio_renderer_waveform.h"
 #include "colour_button.h"
 #include "command/command.h"
 #include "compat.h"
@@ -167,6 +168,8 @@ Audio::Audio(wxTreebook *book, Preferences *parent): OptionPage(book, parent, _(
 	OptionAdd(display, _("Keyframes"), "Audio/Display/Draw/Keyframes in Dialogue Mode");
 	OptionAdd(display, _("Karaoke keyframes"), "Audio/Display/Draw/Keyframes in Karaoke Mode");
 	OptionAdd(display, _("Video position"), "Audio/Display/Draw/Video Position");
+	CellSkip(display);
+	OptionChoice(display, _("Waveform Style"), AudioWaveformRenderer::GetWaveformStyles(), "Audio/Display/Waveform Style");
 
 	wxFlexGridSizer *color = PageSizer(_("Color Schemes"));
 	wxArrayString schemes = vec_to_arrstr(OPT_GET("Audio/Colour Schemes")->GetListString());