data should be const

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39927 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/soundrecorder/VUView.cpp

@@ -175,10 +175,10 @@ VUView::_RenderLoop()
 
 template<typename T>
 T 
-VUView::_ComputeNextLevel(void *data, size_t size, uint32 format, 
+VUView::_ComputeNextLevel(const void *data, size_t size, uint32 format, 
 	int32 channel)
 {
-	T* samp = (T*)data;
+	const T* samp = (const T*)data;
 	
 	// get the min and max values in the nibbling interval
 	// and set max to be the greater of the absolute value
@@ -199,7 +199,7 @@ VUView::_ComputeNextLevel(void *data, size_t size, uint32 format,
 
 
 void
-VUView::ComputeLevels(void* data, size_t size, uint32 format)
+VUView::ComputeLevels(const void* data, size_t size, uint32 format)
 {
 	for (int32 channel = 0; channel < fChannels; channel++) {
 		switch (format) {

src/apps/soundrecorder/VUView.h

@@ -21,14 +21,14 @@ public:
 	void AttachedToWindow();
 	void DetachedFromWindow();
 	void Draw(BRect updateRect);
-	void ComputeLevels(void* data, size_t size, uint32 format);
+	void ComputeLevels(const void* data, size_t size, uint32 format);
 			
 private:
 	void _Run();
 	void _Quit();
 	static int32 _RenderLaunch(void *data);
 	void _RenderLoop();
-	template<typename T> T _ComputeNextLevel(void *data, 
+	template<typename T> T _ComputeNextLevel(const void *data, 
 		size_t size, uint32 format, int32 channel);
 	
 	thread_id fThreadId;