src/apps/soundrecorder/ScopeView.h

   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: Consumers and Producers)
   6  */
   7
   8 #ifndef SCOPEVIEW_H
   9 #define SCOPEVIEW_H
  10
  11 #include <Bitmap.h>
  12 #include <View.h>
  13 #include <MediaTrack.h>
  14
  15
  16 class ScopeView : public BView
  17 {
  18 public:
  19         ScopeView(BRect rect, uint32 resizeFlags);
  20         ~ScopeView();
  21         void AttachedToWindow();
  22         void DetachedFromWindow();
  23         void Draw(BRect updateRect);
  24         void SetMainTime(bigtime_t timestamp);
  25         void SetLeftTime(bigtime_t timestamp);
  26         void SetRightTime(bigtime_t timestamp);
  27         void SetTotalTime(bigtime_t timestamp, bool reset);
  28         void RenderTrack(BMediaTrack *track, const media_format &format);
  29         void CancelRendering();
  30         virtual void FrameResized(float width, float height);
  31         virtual void MouseDown(BPoint position);
  32 private:
  33         void Run();
  34         void Quit();
  35         static int32 RenderLaunch(void *data);
  36         void RenderLoop();
  37         template<typename T, typename U> void ComputeRendering();
  38         void RenderBitmap();
  39         void InitBitmap();
  40
  41         thread_id fThreadId;
  42         BBitmap *fBitmap;
  43         BView *fBitmapView;
  44         sem_id fRenderSem;
  45         bool fIsRendering;
  46         BMediaTrack *fMediaTrack;
  47         media_format fPlayFormat;
  48
  49         bigtime_t fMainTime;
  50         bigtime_t fRightTime;
  51         bigtime_t fLeftTime;
  52         bigtime_t fTotalTime;
  53         int32 fPreview[20000];
  54         float fHeight;
  55 };
  56
  57 #endif  /* SCOPEVIEW_H */