root/extra_lib/include/avcap/linux/V4L2_Tuner.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>.
 */


#ifndef V4L2_TUNER_H_
#define V4L2_TUNER_H_

#include <linux/types.h>
#include <sys/types.h>
#include <string>

#include "Tuner_avcap.h"
#ifdef AVCAP_HAVE_V4L2
#include <linux/videodev2.h>
#else
#include <linux/videodev.h>
#endif

namespace avcap
{
        class V4L2_DeviceDescriptor;
        
        //! Implementation of the Tuner class for Video4Linux2 -devices.
        
        class V4L2_Tuner: public Tuner
        {
        private:

                enum {
                        TUNER_RADIO = V4L2_TUNER_RADIO,
                        TUNER_ANALOG_TV = V4L2_TUNER_ANALOG_TV,
                };
                
                enum {
                        TUNER_CAP_LOW = V4L2_TUNER_CAP_LOW
                };

                typedef __u32        uint;

        private:
                V4L2_DeviceDescriptor*  mDeviceDescriptor;
                int                     mIndex;
                std::string     mName;
                int                     mType;
                int                     mCapabilities;
                uint            mRangeHigh;
                uint            mRangeLow;
                double          mStep;
                
        public:
                V4L2_Tuner(V4L2_DeviceDescriptor *dd, int index, const std::string &name, int type, int caps, uint high, uint low);
                virtual ~V4L2_Tuner();
                
                inline bool isRadioTuner() const 
                        { return mType & TUNER_RADIO; }

                inline bool isTVTuner() const 
                        { return mType & TUNER_ANALOG_TV; };

                int setStereo();

                int setMono();
                
                int setSAP();
                
                int setLang1();

                int setLang2();

                double getFreq() const;

                inline double getFreqStep() const 
                        { return mStep; }
                
                inline double getMinFreq() const 
                        { return mRangeLow*mStep; }

                inline double getMaxFreq() const 
                        { return mRangeHigh*mStep; }
                
                inline const std::string getName() const
                        { return mName; }
                
                int finetune(int maxsteps);
                
                int getAFCValue() const;
                
                int getSignalStrength() const;
                
                int increaseFreq();
                
                int decreaseFreq();             
                
                int setFreq(double f);
                
        private:
                int setAudioMode(int mode);

                int getAudioMode();
        };
}

#endif // V4L2_TUNER_H_