struct v4l2_device{	char	name[32];	int	type;	int	minor;	int	(*open)(struct v4l2_device *v,			int flags, void **idptr);	void	(*close)(void *id);	long	(*read)(void *id,			char *buf, unsigned long count, int noblock);	long	(*write)(void *id,			 const char *buf, unsigned long count, int noblock);	int	(*ioctl)(void *id,			 unsigned int cmd, void *arg);	int	(*mmap)(void *id,			struct vm_area_struct *vma);	int	(*poll)(void *id,			struct file *file, poll_table *table);	int	(*initialize)(struct v4l2_device *v);	void	*priv;	/*  may be used by the driver  */	int	busy;		/*  open count maintained by videodev.c  */	void	*v4l2_priv;		/*  for V4L2 use  */	int	v4l2_reserved[4];	/*  for V4L2 use  */#if (LINUX_VERSION_CODE >= 0x020300) || defined(CONFIG_FS_DEVFS)	devfs_handle_t devfs_handle;	char	devfs_devname[16];#endif};/*  Size of kernel ioctl arg buffer used in ioctl handler  */#define V4L2_MAX_IOCTL_SIZE		256extern int v4l2_register_device(struct v4l2_device *);extern void v4l2_unregister_device(struct v4l2_device *);/*  V4L2 structures  */extern struct v4l2_device *v4l2_device_from_file(struct file *file);extern void *v4l2_openid_from_file(struct file *file);#endif/*ifdef __KERNEL__ *//*----------------------------------------------------------------------       Old Video for Linux backward compatibility below this line.   ----------------------------------------------------------------------  All new applications should use the new API calls.  (These definitions taken from 2.4.0-test9.) */#ifdef __KERNEL__/*  Compatibility layer interface  */struct v4l2_v4l_compat{	int	(*translate_ioctl)(struct file		*file,				   struct v4l2_device	*vfl,				   void			*per_open_data,				   int			cmd,				   void			*arg);	void	(*fix_offset)(struct file *file,			      struct v4l2_device *vfl,			      struct vm_area_struct *vma);};extern int v4l2_v4l_compat_register(struct v4l2_v4l_compat *);extern void v4l2_v4l_compat_unregister(struct v4l2_v4l_compat *);#endif#define VID_TYPE_CAPTURE	1	/* Can capture */#define VID_TYPE_TUNER		2	/* Can tune */#define VID_TYPE_TELETEXT	4	/* Does teletext */#define VID_TYPE_OVERLAY	8	/* Overlay onto frame buffer */#define VID_TYPE_CHROMAKEY	16	/* Overlay by chromakey */#define VID_TYPE_CLIPPING	32	/* Can clip */#define VID_TYPE_FRAMERAM	64	/* Uses the frame buffer memory */#define VID_TYPE_SCALES		128	/* Scalable */#define VID_TYPE_MONOCHROME	256	/* Monochrome only */#define VID_TYPE_SUBCAPTURE	512	/* Can capture subareas of the image */#define VID_TYPE_MPEG_DECODER	1024	/* Can decode MPEG streams */#define VID_TYPE_MPEG_ENCODER	2048	/* Can encode MPEG streams */#define VID_TYPE_MJPEG_DECODER	4096	/* Can decode MJPEG streams */#define VID_TYPE_MJPEG_ENCODER	8192	/* Can encode MJPEG streams */struct video_capability{	char name[32];	int type;	int channels;	/* Num channels */	int audios;	/* Num audio devices */	int maxwidth;	/* Supported width */	int maxheight;	/* And height */	int minwidth;	/* Supported width */	int minheight;	/* And height */};struct video_channel{	int channel;	char name[32];	int tuners;	__u32  flags;#define VIDEO_VC_TUNER		1	/* Channel has a tuner */#define VIDEO_VC_AUDIO		2	/* Channel has audio */	__u16  type;#define VIDEO_TYPE_TV		1#define VIDEO_TYPE_CAMERA	2		__u16 norm;			/* Norm set by channel */};struct video_tuner{	int tuner;	char name[32];	ulong rangelow, rangehigh;	/* Tuner range */	__u32 flags;#define VIDEO_TUNER_PAL		1#define VIDEO_TUNER_NTSC	2#define VIDEO_TUNER_SECAM	4#define VIDEO_TUNER_LOW		8	/* Uses KHz not MHz */#define VIDEO_TUNER_NORM	16	/* Tuner can set norm */#define VIDEO_TUNER_STEREO_ON	128	/* Tuner is seeing stereo */#define VIDEO_TUNER_RDS_ON      256     /* Tuner is seeing an RDS datastream */#define VIDEO_TUNER_MBS_ON      512     /* Tuner is seeing an MBS datastream */	__u16 mode;			/* PAL/NTSC/SECAM/OTHER */#define VIDEO_MODE_PAL		0#define VIDEO_MODE_NTSC		1#define VIDEO_MODE_SECAM	2#define VIDEO_MODE_AUTO		3	__u16 signal;			/* Signal strength 16bit scale */};struct video_picture{	__u16	brightness;	__u16	hue;	__u16	colour;	__u16	contrast;	__u16	whiteness;	/* Black and white only */	__u16	depth;		/* Capture depth */	__u16   palette;	/* Palette in use */#define VIDEO_PALETTE_GREY	1	/* Linear greyscale */#define VIDEO_PALETTE_HI240	2	/* High 240 cube (BT848) */#define VIDEO_PALETTE_RGB565	3	/* 565 16 bit RGB */#define VIDEO_PALETTE_RGB24	4	/* 24bit RGB */#define VIDEO_PALETTE_RGB32	5	/* 32bit RGB */	#define VIDEO_PALETTE_RGB555	6	/* 555 15bit RGB */#define VIDEO_PALETTE_YUV422	7	/* YUV422 capture */#define VIDEO_PALETTE_YUYV	8#define VIDEO_PALETTE_UYVY	9	/* The great thing about standards is ... */#define VIDEO_PALETTE_YUV420	10#define VIDEO_PALETTE_YUV411	11	/* YUV411 capture */#define VIDEO_PALETTE_RAW	12	/* RAW capture (BT848) */#define VIDEO_PALETTE_YUV422P	13	/* YUV 4:2:2 Planar */#define VIDEO_PALETTE_YUV411P	14	/* YUV 4:1:1 Planar */#define VIDEO_PALETTE_YUV420P	15	/* YUV 4:2:0 Planar */#define VIDEO_PALETTE_YUV410P	16	/* YUV 4:1:0 Planar */#define VIDEO_PALETTE_PLANAR	13	/* start of planar entries */#define VIDEO_PALETTE_COMPONENT 7	/* start of component entries */};struct video_audio{	int	audio;		/* Audio channel */	__u16	volume;		/* If settable */	__u16	bass, treble;	__u32	flags;#define VIDEO_AUDIO_MUTE	1#define VIDEO_AUDIO_MUTABLE	2#define VIDEO_AUDIO_VOLUME	4#define VIDEO_AUDIO_BASS	8#define VIDEO_AUDIO_TREBLE	16#define VIDEO_AUDIO_BALANCE	32	char    name[16];#define VIDEO_SOUND_MONO	1#define VIDEO_SOUND_STEREO	2#define VIDEO_SOUND_LANG1	4#define VIDEO_SOUND_LANG2	8        __u16   mode;        __u16	balance;	/* Stereo balance */        __u16	step;		/* Step actual volume uses */};struct video_clip{	__s32	x,y;	__s32	width, height;	struct	video_clip *next;	/* For user use/driver use only */};struct video_window{	__u32	x,y;			/* Position of window */	__u32	width,height;		/* Its size */	__u32	chromakey;	__u32	flags;	struct	video_clip *clips;	/* Set only */	int	clipcount;#define VIDEO_WINDOW_INTERLACE	1#define VIDEO_WINDOW_CHROMAKEY	16	/* Overlay by chromakey */#define VIDEO_CLIP_BITMAP	-1/* bitmap is 1024x625, a '1' bit represents a clipped pixel */#define VIDEO_CLIPMAP_SIZE	(128 * 625)};struct video_capture{	__u32 	x,y;			/* Offsets into image */	__u32	width, height;		/* Area to capture */	__u16	decimation;		/* Decimation divder */	__u16	flags;			/* Flags for capture */#define VIDEO_CAPTURE_ODD		0	/* Temporal */#define VIDEO_CAPTURE_EVEN		1};struct video_buffer{	void	*base;	int	height,width;	int	depth;	int	bytesperline;};struct video_mmap{	unsigned	int frame;		/* Frame (0 - n) for double buffer */	int		height,width;	unsigned	int format;		/* should be VIDEO_PALETTE_* */};struct video_key{	__u8	key[8];	__u32	flags;};#define VIDEO_MAX_FRAME		32struct video_mbuf{	int	size;		/* Total memory to map */	int	frames;		/* Frames */	int	offsets[VIDEO_MAX_FRAME];};	#define 	VIDEO_NO_UNIT	(-1)	struct video_unit{	int 	video;		/* Video minor */	int	vbi;		/* VBI minor */	int	radio;		/* Radio minor */	int	audio;		/* Audio minor */	int	teletext;	/* Teletext minor */};struct vbi_format {	__u32	sampling_rate;	/* in Hz */	__u32	samples_per_line;	__u32	sample_format;	/* VIDEO_PALETTE_RAW only (1 byte) */	__s32	start[2];	/* starting line for each frame */	__u32	count[2];	/* count of lines for each frame */	__u32	flags;#define	VBI_UNSYNC	1	/* can distingues between top/bottom field */#define	VBI_INTERLACED	2	/* lines are interlaced */};/* video_info is biased towards hardware mpeg encode/decode *//* but it could apply generically to any hardware compressor/decompressor */struct video_info{	__u32	frame_count;	/* frames output since decode/encode began */	__u32	h_size;		/* current unscaled horizontal size */	__u32	v_size;		/* current unscaled veritcal size */	__u32	smpte_timecode;	/* current SMPTE timecode (for current GOP) */	__u32	picture_type;	/* current picture type */	__u32	temporal_reference;	/* current temporal reference */	__u8	user_data[256];	/* user data last found in compressed stream */	/* user_data[0] contains user data flags, user_data[1] has count */};/* generic structure for setting playback modes */struct video_play_mode{	int	mode;	int	p1;	int	p2;};/* for loading microcode / fpga programming */struct video_code{	char	loadwhat[16];	/* name or tag of file being passed */	int	datasize;	__u8	*data;};#define VIDIOCGCAP		_IOR('v',1,struct video_capability)	/* Get capabilities */#define VIDIOCGCHAN		_IOWR('v',2,struct video_channel)	/* Get channel info (sources) */#define VIDIOCSCHAN		_IOW('v',3,struct video_channel)	/* Set channel 	*/#define VIDIOCGTUNER		_IOWR('v',4,struct video_tuner)		/* Get tuner abilities */#define VIDIOCSTUNER		_IOW('v',5,struct video_tuner)		/* Tune the tuner for the current channel */#define VIDIOCGPICT		_IOR('v',6,struct video_picture)	/* Get picture properties */#define VIDIOCSPICT		_IOW('v',7,struct video_picture)	/* Set picture properties */#define VIDIOCCAPTURE		_IOW('v',8,int)				/* Start, end capture */#define VIDIOCGWIN		_IOR('v',9, struct video_window)	/* Set the video overlay window */#define VIDIOCSWIN		_IOW('v',10, struct video_window)	/* Set the video overlay window - passes clip list for hardware smarts , chromakey etc */#define VIDIOCGFBUF		_IOR('v',11, struct video_buffer)	/* Get frame buffer */#define VIDIOCSFBUF		_IOW('v',12, struct video_buffer)	/* Set frame buffer - root only */#define VIDIOCKEY		_IOR('v',13, struct video_key)		/* Video key event - to dev 255 is to all - cuts capture on all DMA windows with this key (0xFFFFFFFF == all) */#define VIDIOCGFREQ		_IOR('v',14, unsigned long)		/* Set tuner */#define VIDIOCSFREQ		_IOW('v',15, unsigned long)		/* Set tuner */#define VIDIOCGAUDIO		_IOR('v',16, struct video_audio)	/* Get audio info */#define VIDIOCSAUDIO		_IOW('v',17, struct video_audio)	/* Audio source, mute etc */#define VIDIOCSYNC		_IOW('v',18, int)			/* Sync with mmap grabbing */#define VIDIOCMCAPTURE		_IOW('v',19, struct video_mmap)		/* Grab frames */#define VIDIOCGMBUF		_IOR('v', 20, struct video_mbuf)	/* Memory map buffer info */#define VIDIOCGUNIT		_IOR('v', 21, struct video_unit)	/* Get attached units */#define VIDIOCGCAPTURE		_IOR('v',22, struct video_capture)	/* Get frame buffer */#define VIDIOCSCAPTURE		_IOW('v',23, struct video_capture)	/* Set frame buffer - root only */#define VIDIOCSPLAYMODE		_IOW('v',24, struct video_play_mode)	/* Set output video mode/feature */#define VIDIOCSWRITEMODE	_IOW('v',25, int)			/* Set write mode */#define VIDIOCGPLAYINFO		_IOR('v',26, struct video_info)		/* Get current playback info from hardware */#define VIDIOCSMICROCODE	_IOW('v',27, struct video_code)		/* Load microcode into hardware */#define	VIDIOCGVBIFMT		_IOR('v',28, struct vbi_format)		/* Get VBI information */#define	VIDIOCSVBIFMT		_IOW('v',29, struct vbi_format)		/* Set VBI information */#define BASE_VIDIOCPRIVATE	192		/* 192-255 are private *//* VIDIOCSWRITEMODE */#define VID_WRITE_MPEG_AUD		0#define VID_WRITE_MPEG_VID		1#define VID_WRITE_OSD			2#define VID_WRITE_TTX			3#define VID_WRITE_CC			4#define VID_WRITE_MJPEG			5/* VIDIOCSPLAYMODE */#define VID_PLAY_VID_OUT_MODE		0	/* p1: = VIDEO_MODE_PAL, VIDEO_MODE_NTSC, etc ... */#define VID_PLAY_GENLOCK		1	/* p1: 0 = OFF, 1 = ON */	/* p2: GENLOCK FINE DELAY value */ #define VID_PLAY_NORMAL			2#define VID_PLAY_PAUSE			3#define VID_PLAY_SINGLE_FRAME		4#define VID_PLAY_FAST_FORWARD		5#define VID_PLAY_SLOW_MOTION		6#define VID_PLAY_IMMEDIATE_NORMAL	7#define VID_PLAY_SWITCH_CHANNELS	8#define VID_PLAY_FREEZE_FRAME		9#define VID_PLAY_STILL_MODE		10#define VID_PLAY_MASTER_MODE		11	/* p1: see below */#define		VID_PLAY_MASTER_NONE	1#define		VID_PLAY_MASTER_VIDEO	2#define		VID_PLAY_MASTER_AUDIO	3#define VID_PLAY_ACTIVE_SCANLINES	12	/* p1 = first active; p2 = last active */#define VID_PLAY_RESET			13#define VID_PLAY_END_MARK		14/* v4l1 stuff */#ifdef __KERNEL__struct video_device{#if LINUX_VERSION_CODE >= 0x020403	struct module *owner;#endif	char name[32];	int type;	int hardware;	int (*open)(struct video_device *, int mode);	void (*close)(struct video_device *);	long (*read)(struct video_device *, char *, unsigned long, int noblock);	/* Do we need a write method ? */	long (*write)(struct video_device *, const char *, unsigned long, int noblock);	unsigned int (*poll)(struct video_device *, struct file *, poll_table *);	int (*ioctl)(struct video_device *, unsigned int , void *);	int (*mmap)(struct video_device *, const char *, unsigned long);	int (*initialize)(struct video_device *);       	void *priv;             /* Used to be 'private' but that upsets C++ */	int busy;	int minor;#if (LINUX_VERSION_CODE >= 0x020300) || defined(CONFIG_FS_DEVFS)	devfs_handle_t devfs_handle;#endif#if LINUX_VERSION_CODE >= 0x020300	struct file_operations *fops;#endif};#define VIDEO_MAJOR     81#if LINUX_VERSION_CODE >= 0x020405extern int video_register_device(struct video_device *vfd, int type, int nr);#elseextern int video_register_device(struct video_device *vfd, int type);#endif#define VFL_TYPE_GRABBER        0#define VFL_TYPE_VBI            1#define VFL_TYPE_RADIO          2#define VFL_TYPE_VTX            3extern void video_unregister_device(struct video_device *);/* *      Initialiser list */struct video_init{	char *name;	int (*init)(struct video_init *);};#endif#define VID_HARDWARE_BT848      1#define VID_HARDWARE_QCAM_BW    2#define VID_HARDWARE_PMS        3#define VID_HARDWARE_QCAM_C     4#define VID_HARDWARE_PSEUDO     5#define VID_HARDWARE_SAA5249    6#define VID_HARDWARE_AZTECH     7#define VID_HARDWARE_SF16MI     8#define VID_HARDWARE_RTRACK     9#define VID_HARDWARE_ZOLTRIX    10#define VID_HARDWARE_SAA7146    11#define VID_HARDWARE_VIDEUM     12      /* Reserved for Winnov videum */#define VID_HARDWARE_RTRACK2    13#define VID_HARDWARE_PERMEDIA2  14      /* Reserved for Permedia2 */#define VID_HARDWARE_RIVA128    15      /* Reserved for RIVA 128 */#define VID_HARDWARE_PLANB      16      /* PowerMac motherboard video-in */#define VID_HARDWARE_BROADWAY   17      /* Broadway project */#define VID_HARDWARE_GEMTEK     18#define VID_HARDWARE_TYPHOON    19#define VID_HARDWARE_VINO       20      /* Reserved for SGI Indy Vino */#define VID_HARDWARE_CADET      21      /* Cadet radio */#define VID_HARDWARE_TRUST      22      /* Trust FM Radio */#define VID_HARDWARE_TERRATEC	23	/* TerraTec ActiveRadio */#define VID_HARDWARE_CPIA	24#define VID_HARDWARE_ZR36120	25	/* Zoran ZR36120/ZR36125 */#define VID_HARDWARE_ZR36067	26	/* Zoran ZR36067/36060 */#define VID_HARDWARE_OV511	27	#define VID_HARDWARE_ZR356700	28	/* Zoran 36700 series */#define VID_HARDWARE_W9966      29#define VID_HARDWARE_SE401      30      /* SE401 USB webcams */#define VID_HARDWARE_PWC        31      /* Philips webcams */#define VID_HARDWARE_MEYE       32      /* Sony Vaio MotionEye cameras */#define VID_HARDWARE_CPIA2      33#endif/*ifndef __LINUX_VIDEODEV_H*/