pvfiledev.h

Go to the documentation of this file.

/*
 * pvfiledev.cxx
 *
 * Video file declaration
 *
 * Portable Windows Library
 *
 * Copyright (C) 2004 Post Increment
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.0 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and limitations
 * under the License.
 *
 * The Original Code is Portable Windows Library.
 *
 * The Initial Developer of the Original Code is
 * Craig Southeren <craigs@postincrement.com>
 *
 * All Rights Reserved.
 *
 * Contributor(s): ______________________________________.
 *
 * $Revision: 21788 $
 * $Author: rjongbloed $
 * $Date: 2008-12-11 23:42:13 -0600 (Thu, 11 Dec 2008) $
 */

#ifndef PTLIB_PVFILEDEV_H
#define PTLIB_PVFILEDEV_H

#ifdef P_USE_PRAGMA
#pragma interface
#endif

#include <ptlib.h>

#if P_VIDEO
#if P_VIDFILE

#include <ptlib.h>
#include <ptlib/video.h>
#include <ptlib/vconvert.h>
#include <ptclib/pvidfile.h>
#include <ptclib/delaychan.h>


//
// This class defines a video capture (input) device that reads video from a raw YUV file
//

class PVideoInputDevice_YUVFile : public PVideoInputDevice
{
 PCLASSINFO(PVideoInputDevice_YUVFile, PVideoInputDevice);
 public:
   enum {
     Channel_PlayAndClose     = 0,
     Channel_PlayAndRepeat    = 1,
     Channel_PlayAndKeepLast  = 2,
     Channel_PlayAndShowBlack = 3,
     ChannelCount             = 4
   };

    PVideoInputDevice_YUVFile();

    ~PVideoInputDevice_YUVFile();


    PBoolean Open(
      const PString & deviceName,   
      PBoolean startImmediate = PTrue    
    );

    PBoolean IsOpen() ;

    PBoolean Close();

    PBoolean Start();

    PBoolean Stop();

    PBoolean IsCapturing();

    static PStringArray GetInputDeviceNames();

    virtual PStringArray GetDeviceNames() const
      { return GetInputDeviceNames(); }

    static bool GetDeviceCapabilities(
      const PString & /*deviceName*/, 
      Capabilities * /*caps*/         
    ) { return false; }

    virtual PINDEX GetMaxFrameBytes();

    virtual PBoolean GetFrameData(
      BYTE * buffer,                 
      PINDEX * bytesReturned = NULL  
    );

    virtual PBoolean GetFrameDataNoDelay(
      BYTE * buffer,                 
      PINDEX * bytesReturned = NULL  
    );


    void GrabBlankImage(BYTE *resFrame);

    virtual PBoolean SetVideoFormat(
      VideoFormat videoFormat   
    );

    virtual int GetNumChannels() ;

    virtual PBoolean SetChannel(
         int channelNumber  
    );
    
    virtual PBoolean SetColourFormat(
      const PString & colourFormat   // New colour format for device.
    );
    
    virtual PBoolean SetFrameRate(
      unsigned rate  
    );
         
    virtual PBoolean GetFrameSizeLimits(
      unsigned & minWidth,   
      unsigned & minHeight,  
      unsigned & maxWidth,   
      unsigned & maxHeight   
    ) ;

    virtual PBoolean SetFrameSize(
      unsigned width,   
      unsigned height   
    );

    void ClearMapping() { return ; }

    virtual PBoolean TestAllFormats()
      { return PTrue; }

    void FillRect(BYTE * frame,int xPos, int initialYPos,int rectWidth, int rectHeight,int r, int g,  int b);
   
 protected:
   unsigned       grabCount;
   PINDEX         videoFrameSize;
   PVideoFile   * file;
   PAdaptiveDelay pacing;
};


//
// This class defines a video display (output) device that writes video to a raw YUV file
//

class PVideoOutputDevice_YUVFile : public PVideoOutputDevice
{
  PCLASSINFO(PVideoOutputDevice_YUVFile, PVideoOutputDevice);

  public:
    PVideoOutputDevice_YUVFile();

    ~PVideoOutputDevice_YUVFile();

    static PStringArray GetOutputDeviceNames();

    virtual PStringArray GetDeviceNames() const
      { return GetOutputDeviceNames(); }

    virtual PBoolean Open(
      const PString & deviceName,   
      PBoolean startImmediate = PTrue    
    );

    PBoolean Start();

    PBoolean Stop();

    virtual PBoolean Close();

    virtual PBoolean IsOpen();

    virtual PBoolean SetColourFormat(
      const PString & colourFormat   // New colour format for device.
    );
    
    virtual PINDEX GetMaxFrameBytes();

    virtual PBoolean SetFrameData(
      unsigned x,
      unsigned y,
      unsigned width,
      unsigned height,
      const BYTE * data,
      PBoolean endFrame = PTrue
    );

  protected:  
   PVideoFile * file;
};


#endif // P_VIDFILE
#endif

#endif // PTLIB_PVFILEDEV_H


// End Of File ///////////////////////////////////////////////////////////////

---