vtkVideoSource.h

Go to the documentation of this file.

/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkVideoSource.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef vtkVideoSource_h
#define vtkVideoSource_h

#include "vtkIOVideoModule.h" // For export macro
#include "vtkImageAlgorithm.h"

class vtkTimerLog;
class vtkCriticalSection;
class vtkMultiThreader;
class vtkScalarsToColors;

class VTKIOVIDEO_EXPORT vtkVideoSource : public vtkImageAlgorithm
{
public:
  static vtkVideoSource *New();
  vtkTypeMacro(vtkVideoSource,vtkImageAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  virtual void Record();

  virtual void Play();

  virtual void Stop();

  virtual void Rewind();

  virtual void FastForward();

  virtual void Seek(int n);

  virtual void Grab();


  vtkGetMacro(Recording,int);


  vtkGetMacro(Playing,int);


  virtual void SetFrameSize(int x, int y, int z);
  virtual void SetFrameSize(int dim[3]) {
    this->SetFrameSize(dim[0], dim[1], dim[2]); };
  vtkGetVector3Macro(FrameSize,int);


  virtual void SetFrameRate(float rate);
  vtkGetMacro(FrameRate,float);


  virtual void SetOutputFormat(int format);
  void SetOutputFormatToLuminance() { this->SetOutputFormat(VTK_LUMINANCE); };
  void SetOutputFormatToRGB() { this->SetOutputFormat(VTK_RGB); };
  void SetOutputFormatToRGBA() { this->SetOutputFormat(VTK_RGBA); };
  vtkGetMacro(OutputFormat,int);


  virtual void SetFrameBufferSize(int FrameBufferSize);
  vtkGetMacro(FrameBufferSize,int);


  vtkSetMacro(NumberOfOutputFrames,int);
  vtkGetMacro(NumberOfOutputFrames,int);


  vtkBooleanMacro(AutoAdvance,vtkTypeBool);
  vtkSetMacro(AutoAdvance,vtkTypeBool)
  vtkGetMacro(AutoAdvance,vtkTypeBool);


  virtual void SetClipRegion(int r[6]) {
    this->SetClipRegion(r[0],r[1],r[2],r[3],r[4],r[5]); };
  virtual void SetClipRegion(int x0, int x1, int y0, int y1, int z0, int z1);
  vtkGetVector6Macro(ClipRegion,int);


  vtkSetVector6Macro(OutputWholeExtent,int);
  vtkGetVector6Macro(OutputWholeExtent,int);


  vtkSetVector3Macro(DataSpacing,double);
  vtkGetVector3Macro(DataSpacing,double);


  vtkSetVector3Macro(DataOrigin,double);
  vtkGetVector3Macro(DataOrigin,double);


  vtkSetMacro(Opacity,float);
  vtkGetMacro(Opacity,float);


  vtkGetMacro(FrameCount, int);
  vtkSetMacro(FrameCount, int);


  vtkGetMacro(FrameIndex, int);

  virtual double GetFrameTimeStamp(int frame);

  double GetFrameTimeStamp() { return this->FrameTimeStamp; };


  virtual void Initialize();
  virtual int GetInitialized() { return this->Initialized; };

  virtual void ReleaseSystemResources();

  virtual void InternalGrab();


  void SetStartTimeStamp(double t) { this->StartTimeStamp = t; };
  double GetStartTimeStamp() { return this->StartTimeStamp; };

protected:
  vtkVideoSource();
  ~vtkVideoSource() override;
  int RequestInformation(vtkInformation *, vtkInformationVector **, vtkInformationVector *) override;

  int Initialized;

  int FrameSize[3];
  int ClipRegion[6];
  int OutputWholeExtent[6];
  double DataSpacing[3];
  double DataOrigin[3];
  int OutputFormat;
  // set according to the OutputFormat
  int NumberOfScalarComponents;
  // The FrameOutputExtent is the WholeExtent for a single output frame.
  // It is initialized in ExecuteInformation.
  int FrameOutputExtent[6];

  // save this information from the output so that we can see if the
  // output scalars have changed
  int LastNumberOfScalarComponents;
  int LastOutputExtent[6];

  int Recording;
  int Playing;
  float FrameRate;
  int FrameCount;

  double StartTimeStamp;
  double FrameTimeStamp;

  vtkTypeBool AutoAdvance;
  int NumberOfOutputFrames;

  float Opacity;

  // true if Execute() must apply a vertical flip to each frame
  int FlipFrames;

  // set if output needs to be cleared to be cleared before being written
  int OutputNeedsInitialization;

  // An example of asynchrony
  vtkMultiThreader *PlayerThreader;
  int PlayerThreadId;

  // A mutex for the frame buffer: must be applied when any of the
  // below data is modified.
  vtkCriticalSection *FrameBufferMutex;

  // set according to the needs of the hardware:
  // number of bits per framebuffer pixel
  int FrameBufferBitsPerPixel;
  // byte alignment of each row in the framebuffer
  int FrameBufferRowAlignment;
  // FrameBufferExtent is the extent of frame after it has been clipped
  // with ClipRegion.  It is initialized in CheckBuffer().
  int FrameBufferExtent[6];

  int FrameBufferSize;

  // where the current frame is, note this decreases in time
  // increasing values are older frames
  int FrameBufferIndex;

  // number of frames from the beginning sort of,
  // it does wrap, sometimes
  int FrameIndex;


  void **FrameBuffer;
  double *FrameBufferTimeStamps;


  virtual void UpdateFrameBuffer();
  virtual void AdvanceFrameBuffer(int n);
  int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *) override;
  // if some component conversion is required, it is done here:
  virtual void UnpackRasterLine(char *outPtr, char *rowPtr,
                                int start, int count);

private:
  vtkVideoSource(const vtkVideoSource&) = delete;
  void operator=(const vtkVideoSource&) = delete;
};

#endif