#ifndef _LINUX_VIDEO_ENCODER_H
  #define _LINUX_VIDEO_ENCODER_H
  
  struct video_encoder_capability { /* this name is too long */
  	__u32	flags;
  #define	VIDEO_ENCODER_PAL	1	/* can encode PAL signal */
  #define	VIDEO_ENCODER_NTSC	2	/* can encode NTSC */
  #define	VIDEO_ENCODER_SECAM	4	/* can encode SECAM */
  #define	VIDEO_ENCODER_CCIR	16	/* CCIR-601 pixel rate (720 pixels per line) instead of square pixel rate */
  	int	inputs;			/* number of inputs */
  	int	outputs;		/* number of outputs */
  };
  
  #define	ENCODER_GET_CAPABILITIES _IOR('e', 1, struct video_encoder_capability)
  #define	ENCODER_SET_NORM	_IOW('e', 2, int)
  #define	ENCODER_SET_INPUT	_IOW('e', 3, int)	/* 0 <= input < #inputs */
  #define	ENCODER_SET_OUTPUT	_IOW('e', 4, int)	/* 0 <= output < #outputs */
  #define	ENCODER_ENABLE_OUTPUT	_IOW('e', 5, int)	/* boolean output enable control */
  
  
  #endif