zoneminder/src/zm_local_camera.h

//
// ZoneMinder Local Camera Class Interface, $Date$, $Revision$
// Copyright (C) 2003, 2004, 2005, 2006  Philip Coombes
// 
// This program 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 2
// of the License, or (at your option) any later version.
// 
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
// 

#ifndef ZM_LOCAL_CAMERA_H
#define ZM_LOCAL_CAMERA_H

#include <sys/types.h>
#include <sys/ioctl.h>

#include "zm_camera.h"

//
// Class representing 'local' cameras, i.e. those which are
// directly connect to the host machine and which are accessed
// via a video interface.
//
class LocalCamera : public Camera
{
protected:
	char 	device[PATH_MAX];
	int		channel;
	int		format;

    int     channel_index;

protected:
	static int				camera_count;
	static int				channel_count;
    static int              last_channel;

	static int				m_cap_frame;
	static int				m_cap_frame_active;
	static int				m_sync_frame;
	static video_mbuf		m_vmb;
	static video_mmap		*m_vmm;
	static int				m_videohandle;
	static unsigned char	*m_buffer;
	static unsigned char	*y_table;
	static signed char		*uv_table;
	static short			*r_v_table;
	static short			*g_v_table;
	static short			*g_u_table;
	static short			*b_u_table;

public:
	LocalCamera( const char *p_device, int p_channel, int p_format, int p_width, int p_height, int p_palette, int p_brightness, int p_contrast, int p_hue, int p_colour, bool p_capture=true );
	~LocalCamera();

	void Initialise();
	void Terminate();

	const char *Device() const { return( device ); }
	unsigned int Channel() const { return( channel ); }
	unsigned int Format() const { return( format ); }

	int Brightness( int p_brightness=-1 );
	int Hue( int p_hue=-1 );
	int Colour( int p_colour=-1 );
	int Contrast( int p_contrast=-1 );

	int PrimeCapture();
	int PreCapture();
	int PostCapture( Image &image );

	static bool GetCurrentSettings( const char *device, char *output, bool verbose );
};

#endif // ZM_LOCAL_CAMERA_H