added speed changes while maintaining audio pitch

project/clip.cpp

@@ -33,7 +33,8 @@ Clip::Clip(Sequence* s) :
 	filter_graph(NULL),
 	texture(NULL),
 	fbo(NULL),
-    autoscale(config.autoscale_by_default)
+	autoscale(config.autoscale_by_default),
+	maintain_audio_pitch(false)
 {
     reset();
 }

project/clip.h

@@ -116,8 +116,8 @@ struct Clip
     long texture_frame;
 	bool autoscale;
 
-    // audio playback variables
-//	SwrContext* swr_ctx;
+	// audio playback variables
+	bool maintain_audio_pitch;
     int frame_sample_index;
     int audio_buffer_write;
     bool audio_reset;