vsdl.h

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/*
 * vsdl.h
 *
 * Classes to support video output via SDL
 *
 * Copyright (c) 1999-2000 Equivalence Pty. Ltd.
 *
 * 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 Open H323 Library.
 *
 * The Initial Developer of the Original Code is Equivalence Pty. Ltd.
 *
 * Contributor(s): Derek J Smithies (derek@indranet.co.nz)
 *
 * $Revision: 20385 $
 * $Author: rjongbloed $
 * $Date: 2008-06-04 10:40:38 +0000 (Wed, 04 Jun 2008) $
 */

#ifndef _PVSDL
#define _PVSDL

#if P_SDL

#include <ptlib.h>
#if defined(P_FREEBSD)
#include <SDL11/SDL.h>
#else
#include <SDL/SDL.h>
#endif

#include <ptlib/videoio.h>

#undef main


class PVideoOutputDevice_SDL : public PVideoOutputDevice
{
    PCLASSINFO(PVideoOutputDevice_SDL, PVideoOutputDevice);
  
  public:
    PVideoOutputDevice_SDL();
  
    ~PVideoOutputDevice_SDL();
  
    virtual PStringArray GetDeviceNames() const;
  
    virtual PBoolean Open(
      const PString & /*deviceName*/,   
      PBoolean /*startImmediate*/ = PTrue    
    );
  
    virtual PBoolean Close();
  
    virtual PBoolean IsOpen();
  
    virtual PBoolean SetColourFormat(
      const PString & colourFormat 
    );

    virtual PBoolean SetFrameSize(
      unsigned width,   
      unsigned height   
    );

    virtual PINDEX GetMaxFrameBytes();

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

  protected:
    PDECLARE_NOTIFIER(PThread, PVideoOutputDevice_SDL, SDLThreadMain);
    bool InitialiseSDL();
    bool ProcessSDLEvents();

    PThread     * sdlThread;
    PSyncPoint    sdlStarted;
    PSyncPointAck sdlStop;
    PSyncPointAck adjustSize;
    bool          updateOverlay;
    PMutex        mutex;

    SDL_Surface * screen;
    SDL_Overlay * overlay;
  };


typedef PVideoOutputDevice_SDL PSDLVideoDevice; // Backward compatibility


PWLIB_STATIC_LOAD_PLUGIN(SDL, PVideoOutputDevice);

#endif    // P_SDL

#endif

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