1 /* 2 * Copyright 2005, Jérôme Duval. All rights reserved. 3 * Distributed under the terms of the MIT License. 4 * 5 * Inspired by SoundCapture from Be newsletter (Media Kit Basics: 6 * Consumers and Producers) 7 */ 8 9 #ifndef VUVIEW_H 10 #define VUVIEW_H 11 12 #include <Bitmap.h> 13 #include <View.h> 14 15 16 class VUView : public BView 17 { 18 public: 19 VUView(BRect rect, uint32 resizeFlags); 20 ~VUView(); 21 void AttachedToWindow(); 22 void DetachedFromWindow(); 23 void Draw(BRect updateRect); 24 void ComputeLevels(const void* data, size_t size, uint32 format); 25 26 private: 27 void _Run(); 28 void _Quit(); 29 static int32 _RenderLaunch(void *data); 30 void _RenderLoop(); 31 template<typename T> T _ComputeNextLevel(const void *data, 32 size_t size, uint32 format, int32 channel); 33 34 thread_id fThreadId; 35 BBitmap *fBitmap; 36 BView *fBitmapView; 37 bool fQuitting; 38 int32 fLevelCount; 39 int32 *fCurrentLevels; 40 int32 fChannels; 41 }; 42 43 #endif /* VUVIEW_H */ 44