root/extra_lib/include/avcap/linux/V4L1_Control.h

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/*
 * (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 V4L1_CONTROL_H_
#define V4L1_CONTROL_H_

#include <string>
#include <list>

#include "Control_avcap.h"

namespace avcap
{
        // forward declaration
        class V4L1_DeviceDescriptor;
        
        //! Implementation of a V4L1-Control.

        /*! The V4L1 API supprots only controls for brightness, hue, colour, contrast, depth and whiteness.
         * They are all integer values between 0 and 65535.*/
         
        class V4L1_Control: public IntegerControl
        {
        public:
                enum Ctrl {
                        BRIGHTNESS = 0,
                        HUE,
                        COLOUR,
                        CONTRAST,
                        WHITENESS,
                        DEPTH
                };
        
        private:        
                static std::string mNames[6];
                
                V4L1_DeviceDescriptor*  mDescriptor;
                Ctrl    mType;
                int             mDefaultValue;
                Interval mInterval;
                
        public:
                V4L1_Control(V4L1_DeviceDescriptor* dd, Ctrl type,  __u16 def);

                virtual inline ~V4L1_Control()
                        {}
                
                virtual inline int getId() const
                        { return mType; }
                
                virtual inline int getDefaultValue() const
                        { return mDefaultValue; }
                
                virtual const std::string& getName() const;
                
                virtual int setValue(int val);

                virtual int getValue() const;
                
                virtual int reset();

                virtual inline const Interval& getInterval() const 
                        { return mInterval; }
        };
}

#endif // V4L1_CONTROL_H_
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