root/extra_lib/include/avcap/osx/QT_FormatManager.h

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INCLUDED FROM

/*
 * (c) 2005, 2008 Nico Pranke <Nico.Pranke@googlemail.com>, Robin Luedtke <RobinLu@gmx.de> 
 *
 * This file is part of avcap.
 *
 * avcap is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * avcap is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with avcap.  If not, see <http://www.gnu.org/licenses/>.
 */

/* avcap is free for non-commercial use.
 * To use it in commercial endeavors, please contact Nico Pranke <Nico.Pranke@googlemail.com>.
 */

#ifndef QT_FORMATMANAGER_H
#define QT_FORMATMANAGER_H

#include <stdint.h>
#include <QuickTime/QuickTime.h>

#include "FormatManager.h"

namespace avcap
{
        class QT_DeviceDescriptor;
        
        //! Implementation of the FormatManager for the QuickTime-implementation of CaptureDevice.
        
        /*! This FormatManager supports at most one format, so setting the format is not realy neccessary. */
        
        class QT_FormatManager: public FormatManager
        {
        private:
                QT_DeviceDescriptor*    mQTDeviceDescriptor;
                GWorldPtr                               mGWorld;
                Rect                                    mCurrentBounds;
                bool                                    mNeedsDecompression;
                
        public:
                QT_FormatManager(QT_DeviceDescriptor *dd);
                
                virtual ~QT_FormatManager();
                
                int setFormat(Format *fmt);
                
                int setFormat(uint32_t fourcc);

                Format* getFormat();
                
                int setResolution(int w, int h);

                int getWidth();

                int getHeight();
                
                size_t getImageSize();
                                
                int setFramerate(int fps);
                
                int getFramerate();
                
                void query();
                
        private:
                
                int probeResolutions(Format* fmt);

                int checkResolution(int w, int h);

                int updateGWorld(const Rect* bounds);

                static uint32_t OSType2Fourcc(OSType pixel_format);
                
                static OSType Fourcc2OSType(uint32_t fourcc);

                inline bool needsDecompression() const 
                        { return mNeedsDecompression; }

                friend class QT_VidCapManager;
        };
}

#endif // QT_FORMATMANAGER_H
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