1#ifndef _LINUX_VIDEO_DECODER_H 2#define _LINUX_VIDEO_DECODER_H 3 4struct video_decoder_capability { /* this name is too long */ 5 __u32 flags; 6#define VIDEO_DECODER_PAL 1 /* can decode PAL signal */ 7#define VIDEO_DECODER_NTSC 2 /* can decode NTSC */ 8#define VIDEO_DECODER_SECAM 4 /* can decode SECAM */ 9#define VIDEO_DECODER_AUTO 8 /* can autosense norm */ 10#define VIDEO_DECODER_CCIR 16 /* CCIR-601 pixel rate (720 pixels per line) instead of square pixel rate */ 11 int inputs; /* number of inputs */ 12 int outputs; /* number of outputs */ 13}; 14 15/* 16DECODER_GET_STATUS returns the following flags. The only one you need is 17DECODER_STATUS_GOOD, the others are just nice things to know. 18*/ 19#define DECODER_STATUS_GOOD 1 /* receiving acceptable input */ 20#define DECODER_STATUS_COLOR 2 /* receiving color information */ 21#define DECODER_STATUS_PAL 4 /* auto detected */ 22#define DECODER_STATUS_NTSC 8 /* auto detected */ 23#define DECODER_STATUS_SECAM 16 /* auto detected */ 24 25 26#define DECODER_GET_CAPABILITIES _IOR('d', 1, struct video_decoder_capability) 27#define DECODER_GET_STATUS _IOR('d', 2, int) 28#define DECODER_SET_NORM _IOW('d', 3, int) 29#define DECODER_SET_INPUT _IOW('d', 4, int) /* 0 <= input < #inputs */ 30#define DECODER_SET_OUTPUT _IOW('d', 5, int) /* 0 <= output < #outputs */ 31#define DECODER_ENABLE_OUTPUT _IOW('d', 6, int) /* boolean output enable control */ 32#define DECODER_SET_PICTURE _IOW('d', 7, struct video_picture) 33 34#define DECODER_DUMP _IO('d', 192) /* debug hook */ 35 36 37#endif 38