root/extra_lib/include/avcap/linux/AVC_VidCapManager.h

/*
 * (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>
 */


#ifdef HAS_AVC_SUPPORT

#ifndef AVC_VIDCAPMANAGER_H_
#define AVC_VIDCAPMANAGER_H_

#include "avcap-config.h"

#include <sys/types.h>
#include <list>
#include <time.h>

#include "CaptureManager.h"

namespace avcap
{
        class AVC_DeviceDescriptor;
        class AVC_FormatManager;
        class IOBuffer;
        class CaptureHandler;
        class AVC_Reader;
        class iec61883Connection;
        
        //! The IEEE 1394 AV/C video capture manager.
        
        /*! This class is used to capture video data from a AV/C-Device (e.g. DV-Cams) connected 
         * to the computer via IEEE 1394 (aka Firewire or iLink) under Linux. 
        */
        class AVC_VidCapManager: public CaptureManager
        {
        public:
                enum
                {
                        MAX_BUFFERS = 32,       //!< The maximum number of IOBuffers.
                        DEFAULT_BUFFERS = 8     //!< The default number of used IOBuffers.
                };
                
        private:
                typedef std::list<IOBuffer*> IOBufList;
                
                AVC_DeviceDescriptor    *mDeviceDescriptor;
                AVC_FormatManager               *mFormatMgr;
                AVC_Reader                              *mReader;
                iec61883Connection              *mConnection;
                
                IOBufList                       mBuffers;
                int                                     mNumBufs;
                int                             mSequence;

        public:
        
                AVC_VidCapManager(AVC_DeviceDescriptor* dd, AVC_FormatManager* fmt_mgr, int nbufs = DEFAULT_BUFFERS);
                
                virtual ~AVC_VidCapManager();
                
                int init();
                
                int destroy();
                
                int startCapture();

                int stopCapture();
                
                void registerCaptureHandler(CaptureHandler *handler); 

                void removeCaptureHandler(); 
                
                virtual int getNumIOBuffers();

        private:
                virtual IOBuffer* dequeue();

                virtual int enqueue(IOBuffer* buf);
        };
}
#endif // AVC_VIDCAPMANAGER_H_

#endif // HAS_AVC_SUPPORT