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422 giacomo 1
#ifndef _LINUX_VIDEO_DECODER_H
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#define _LINUX_VIDEO_DECODER_H
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struct video_decoder_capability { /* this name is too long */
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        __u32   flags;
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#define VIDEO_DECODER_PAL       1       /* can decode PAL signal */
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#define VIDEO_DECODER_NTSC      2       /* can decode NTSC */
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#define VIDEO_DECODER_SECAM     4       /* can decode SECAM */
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#define VIDEO_DECODER_AUTO      8       /* can autosense norm */
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#define VIDEO_DECODER_CCIR      16      /* CCIR-601 pixel rate (720 pixels per line) instead of square pixel rate */
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        int     inputs;                 /* number of inputs */
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        int     outputs;                /* number of outputs */
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};
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/*
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DECODER_GET_STATUS returns the following flags.  The only one you need is
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DECODER_STATUS_GOOD, the others are just nice things to know.
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*/
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#define DECODER_STATUS_GOOD     1       /* receiving acceptable input */
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#define DECODER_STATUS_COLOR    2       /* receiving color information */
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#define DECODER_STATUS_PAL      4       /* auto detected */
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#define DECODER_STATUS_NTSC     8       /* auto detected */
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#define DECODER_STATUS_SECAM    16      /* auto detected */
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#define DECODER_GET_CAPABILITIES _IOR('d', 1, struct video_decoder_capability)
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#define DECODER_GET_STATUS      _IOR('d', 2, int)
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#define DECODER_SET_NORM        _IOW('d', 3, int)
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#define DECODER_SET_INPUT       _IOW('d', 4, int)       /* 0 <= input < #inputs */
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#define DECODER_SET_OUTPUT      _IOW('d', 5, int)       /* 0 <= output < #outputs */
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#define DECODER_ENABLE_OUTPUT   _IOW('d', 6, int)       /* boolean output enable control */
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#define DECODER_SET_PICTURE     _IOW('d', 7, struct video_picture)
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#define DECODER_DUMP            _IO('d', 192)           /* debug hook */
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#endif