vdisplay.h

使用VOIP技术.能够无连接接通远程用户

//
//  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 CPhone, a cross platform voip gui.
//
//  The Initial Developer of the Original Code is Derek Smithies.
//
//  Copyright (C) 2002 Indranet Technologies Ltd, 
//                                  http://www.indranet-technologies.com
//  All Rights Reserved.
//
//  Contributor(s): _______________


/*
 *
 *  $Log: vdisplay.h,v $
 *  Revision 1.3  2003/05/09 03:08:24  dereksmithies
 *  Fix Microtelco handling, and message display
 *
 *  Revision 1.2  2003/04/04 04:37:49  dereksmithies
 *  Major upgrade.
 *  Ixj & microtelco support added. Fix threading issues.
 *
 *  Revision 1.1.1.1  2002/05/12 22:55:03  dereksmithies
 *  Initial release.
 *
 *
 *
 *
 */

#ifndef VDISPLAY_H
#define VDISPLAY_H
#include <ptlib.h>
#include <ptlib/vconvert.h>

#ifndef QT_H
#include "qwidget.h"
#endif
#include <qframe.h>
#include <qimage.h>
#include <qthread.h>
#include <qlabel.h>

#define SWAP_BLANK    1
#define SWAP_BUFFER   2
#define SWAP_INCOMING 3

//This class takes YUV420P data, scales and displays it. 
class VideoDisplay : public QFrame   //VideoDisplay class
{
 public:
  VideoDisplay( QWidget *parent=0, const char *name=0, WFlags f=0);
  ~VideoDisplay();

  void drawContents(QPainter *p);

  void SetDisplayBuffer(const void *videoFrame, unsigned _width, unsigned _height, BOOL doFlip);

  void RemoveVideoImage();

  void InitiateRepaint(BOOL doErase);

 private:

  void CreateColourConverter();
  
  void ResizeImage(uchar *dest_data,   unsigned    dest_width,    unsigned  dest_height,
		   uchar *source_data, unsigned    source_width,  unsigned  source_height);
  
  void SwapImages(int swapNeeded);
  
  int   width;
  int   height;
  
  PColourConverter *converter;
  PMutex bufferMutex;

  QImage *blankImage;
  QImage *incomingImage;
  QImage *displayImage;
  QImage *bufferImage;
  QImage *scaledImage;

  BOOL   displayFlipped;
  BOOL   newImageData;
};

//This class is provided so any thread can safely send text to this label,
//and have it displayed without thread violations.

class LabelDisplay : public QLabel
{
 public:
  LabelDisplay(QWidget *parent=0, const char *name=0, WFlags f=0);


  void customEvent(QCustomEvent *e);

  void prepareDisplayText(QString s);

 private:
  QString displayText;
  PMutex  displayMutex;
};


//This class is used to generate a RGB32 image of size (X,Y) with
//text displayed on it.

class Rgb32Image : public QObject
{
  Q_OBJECT
    
 public:
  Rgb32Image(int x, int y, QString newMessage);
  ~Rgb32Image();
  
  QString  GetTextMessage() const { return textMessage; }
  unsigned Width()  const { return frameWidth ; }
  unsigned Height() const { return frameHeight; }

  void     RestrictAccess() { access.lock(); }
  void     EnableAccess() { access.unlock(); }
  BYTE *   GetDataPointer() const;

  void     CopyData(u_char *dest);
   
  bool  event(QEvent *e);

  void MakeImage();

 private:
  unsigned frameWidth, frameHeight;
  QImage *image;
  QString textMessage;
  QMutex access;
};

 

      
#endif // VDISPLAY_H