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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkOpenCVVideoIO_h
#define itkOpenCVVideoIO_h
#include "itkVideoIOBase.h"
#include "cv.h"
#include "highgui.h"
#include "ITKVideoBridgeOpenCVExport.h"
namespace itk
{
/** \class OpenCVVideoIO
*
* \brief VideoIO object for reading and writing videos using OpenCV
*
* \ingroup ITKVideoBridgeOpenCV
*/
class ITKVideoBridgeOpenCV_EXPORT OpenCVVideoIO : public VideoIOBase
{
public:
/** Standard class typedefs. */
typedef OpenCVVideoIO Self;
typedef VideoIOBase Superclass;
typedef SmartPointer< Self > Pointer;
typedef Superclass::TemporalOffsetType TemporalOffsetType;
typedef Superclass::FrameOffsetType FrameOffsetType;
typedef Superclass::TemporalRatioType TemporalRatioType;
typedef Superclass::CameraIDType CameraIDType;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(OpenCVVideoIO, Superclass);
/** Close the reader and writer and reset members */
virtual void FinishReadingOrWriting();
//
// Data reading-related methods
//
/** Set to reading from file */
virtual void SetReadFromFile();
/** Set to reading from a camera */
virtual void SetReadFromCamera();
/** Determine the file type. Returns true if this ImageIO can read the
* file specified. */
virtual bool CanReadFile(const char *);
/** Return whether or not the VideoIO can read from a camera */
virtual bool CanReadCamera( CameraIDType cameraID ) const;
/** Set the spacing and dimension information for the set filename. */
virtual void ReadImageInformation();
/** Reads the data from disk into the memory buffer provided. */
virtual void Read(void *buffer);
/** Set the next frame that should be read. Return true if you operation
* successful. */
virtual bool SetNextFrameToRead( FrameOffsetType frameNumber );
/** Virtual accessor functions to be implemented in each derived class. */
virtual TemporalOffsetType GetPositionInMSec() const;
virtual TemporalRatioType GetRatio() const;
virtual FrameOffsetType GetFrameTotal() const;
virtual TemporalRatioType GetFramesPerSecond() const;
virtual FrameOffsetType GetCurrentFrame() const;
virtual FrameOffsetType GetIFrameInterval() const;
virtual FrameOffsetType GetLastIFrame() const;
//
// Data writing-related methods
//
/** Get/Set the device index for reading from a camera. */
virtual void SetCameraIndex(CameraIDType idx);
virtual CameraIDType GetCameraIndex() const;
/** Override Accessors to pass default values since OpenCV doesn't handle
* this type of meta data. */
virtual double GetSpacing(unsigned int itkNotUsed(i)) const
{ return 1.0; }
virtual double GetOrigin(unsigned int itkNotUsed(i)) const
{ return 0.0; }
virtual std::vector< double > GetDirection(unsigned int i) const
{ return this->GetDefaultDirection(i); }
/** Determine the file type. Returns true if this ImageIO can write the
* file specified. */
virtual bool CanWriteFile(const char *);
/** Writes the spacing and dimensions of the image.
* Assumes SetFileName has been called with a valid file name. */
virtual void WriteImageInformation();
/** Writes the data to disk from the memory buffer provided. Make sure
* that the IORegion has been set properly. */
virtual void Write(const void *buffer);
/** Set Writer parameters. */
virtual void SetWriterParameters( TemporalRatioType fps,
const std::vector<SizeValueType>& dim,
const char* fourCC,
unsigned int nChannels,
IOComponentType componentType );
protected:
OpenCVVideoIO();
~OpenCVVideoIO();
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
/** Update the local members from the internal capture. */
void UpdateReaderProperties();
/** Reset member variables to empty state closed. */
void ResetMembers();
/** Open the reader if the writer is not open. */
void OpenReader();
/** Open the writer if the reader is not open. */
void OpenWriter();
private:
OpenCVVideoIO(const Self &) ITK_DELETE_FUNCTION;
void operator=(const Self &) ITK_DELETE_FUNCTION;
private:
IplImage* m_CVImage;
IplImage* m_TempImage;
CvCapture* m_Capture;
CvVideoWriter* m_Writer;
int m_FourCC;
int m_CameraIndex;
};
} // end namespace itk
#endif // itkOpenCVVideoIO_h
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