include/linux/videodev.h

   1 #ifndef __LINUX_VIDEODEV_H
   2 #define __LINUX_VIDEODEV_H
   3
   4 #ifdef __KERNEL__
   5
   6 struct video_device
   7 {
   8         char name[32];
   9         int type;
  10         int hardware;
  11
  12         int (*open)(struct video_device *, int mode);
  13         void (*close)(struct video_device *);
  14         long (*read)(struct video_device *, char *, unsigned long, int noblock);
  15         /* Do we need a write method ? */
  16         long (*write)(struct video_device *, const char *, unsigned long, int noblock);
  17         int (*ioctl)(struct video_device *, unsigned int , void *);
  18         int (*mmap)(struct video_device *, const char *, unsigned long);
  19         int (*initialize)(struct video_device *);
  20         void *private;
  21         int busy;
  22         int minor;
  23 };
  24
  25 extern int videodev_init(void);
  26 #define VIDEO_MAJOR     81
  27 extern int video_register_device(struct video_device *);
  28 extern void video_unregister_device(struct video_device *);
  29 #endif
  30
  31
  32 #define VID_TYPE_CAPTURE        1       /* Can capture */
  33 #define VID_TYPE_TUNER          2       /* Can tune */
  34 #define VID_TYPE_TELETEXT       4       /* Does teletext */
  35 #define VID_TYPE_OVERLAY        8       /* Overlay onto frame buffer */
  36 #define VID_TYPE_CHROMAKEY      16      /* Overlay by chromakey */
  37 #define VID_TYPE_CLIPPING       32      /* Can clip */
  38 #define VID_TYPE_FRAMERAM       64      /* Uses the frame buffer memory */
  39 #define VID_TYPE_SCALES         128     /* Scalable */
  40 #define VID_TYPE_MONOCHROME     256     /* Monochrome only */
  41
  42
  43 struct video_capability
  44 {
  45         char    name[32];
  46         int type;
  47         int channels;   /* Num channels */
  48         int audios;     /* Num audio devices */
  49         int maxwidth;   /* Supported width */
  50         int maxheight;  /* And height */
  51         int minwidth;   /* Supported width */
  52         int minheight;  /* And height */
  53 };
  54
  55
  56 struct video_channel
  57 {
  58         int channel;
  59         char name[32];
  60         int tuners;
  61         __u32  flags;
  62 #define VIDEO_VC_TUNER          1       /* Channel has a tuner */
  63 #define VIDEO_VC_AUDIO          2       /* Channel has audio */
  64         __u16  type;
  65 #define VIDEO_TYPE_TV           1
  66 #define VIDEO_TYPE_CAMERA       2
  67 };
  68
  69 struct video_tuner
  70 {
  71         int tuner;
  72         char name[32];
  73         ulong rangelow, rangehigh;      /* Tuner range */
  74         __u32 flags;
  75 #define VIDEO_TUNER_PAL         1
  76 #define VIDEO_TUNER_NTSC        2
  77 #define VIDEO_TUNER_SECAM       4
  78         __u16 mode;                     /* PAL/NTSC/SECAM/OTHER */
  79 #define VIDEO_MODE_PAL          0
  80 #define VIDEO_MODE_NTSC         1
  81 #define VIDEO_MODE_SECAM        2
  82 #define VIDEO_MODE_AUTO         3
  83 };
  84
  85 struct video_picture
  86 {
  87         __u16   brightness;
  88         __u16   hue;
  89         __u16   colour;
  90         __u16   contrast;
  91         __u16   whiteness;      /* Black and white only */
  92         __u16   depth;          /* Capture depth */
  93         __u16   palette;        /* Palette in use */
  94 #define VIDEO_PALETTE_GREY      1       /* Linear greyscale */
  95 #define VIDEO_PALETTE_HI240     2       /* High 240 cube (BT848) */
  96 #define VIDEO_PALETTE_RGB565    3       /* 565 16 bit RGB */
  97 #define VIDEO_PALETTE_RGB24     4       /* 24bit RGB */
  98 #define VIDEO_PALETTE_RGB32     5       /* 32bit RGB */
  99 #define VIDEO_PALETTE_RGB555    6       /* 555 15bit RGB */
 100 };
 101
 102 struct video_audio
 103 {
 104         int     audio;          /* Audio channel */
 105         __u16   volume;         /* If settable */
 106         __u16   bass, treble;
 107         __u32   flags;
 108 #define VIDEO_AUDIO_MUTE        1
 109 #define VIDEO_AUDIO_MUTABLE     2
 110 #define VIDEO_AUDIO_VOLUME      4
 111 #define VIDEO_AUDIO_BASS        8
 112 #define VIDEO_AUDIO_TREBLE      16
 113         char    name[16];
 114 };
 115
 116 struct video_clip
 117 {
 118         __s32   x,y;
 119         __s32   width, height;
 120         struct  video_clip *next;       /* For user use/driver use only */
 121 };
 122
 123 struct video_window
 124 {
 125         __u32   x,y;
 126         __u32   width,height;
 127         __u32   chromakey;
 128         __u32   flags;
 129         struct  video_clip *clips;      /* Set only */
 130         int     clipcount;
 131 #define VIDEO_WINDOW_INTERLACE  1
 132 };
 133
 134 struct video_buffer
 135 {
 136         void    *base;
 137         int     height,width;
 138         int     depth;
 139         int     bytesperline;
 140 };
 141
 142
 143 struct video_key
 144 {
 145         __u8    key[8];
 146         __u32   flags;
 147 };
 148
 149 #define VIDIOCGCAP              _IOR('v',1,struct video_capability)     /* Get capabilities */
 150 #define VIDIOCGCHAN             _IOWR('v',2,struct video_channel)       /* Get channel info (sources) */
 151 #define VIDIOCSCHAN             _IOW('v',3,int)                         /* Set channel  */
 152 #define VIDIOCGTUNER            _IOWR('v',4,struct video_tuner)         /* Get tuner abilities */
 153 #define VIDIOCSTUNER            _IOW('v',5,struct video_tuner)          /* Tune the tuner for the current channel */
 154 #define VIDIOCGPICT             _IOR('v',6,struct video_picture)        /* Get picture properties */
 155 #define VIDIOCSPICT             _IOW('v',7,struct video_picture)        /* Set picture properties */
 156 #define VIDIOCCAPTURE           _IOW('v',8,int)                         /* Start, end capture */
 157 #define VIDIOCGWIN              _IOR('v',9, struct video_window)        /* Set the video overlay window */
 158 #define VIDIOCSWIN              _IOW('v',10, struct video_window)       /* Set the video overlay window - passes clip list for hardware smarts , chromakey etc */
 159 #define VIDIOCGFBUF             _IOR('v',11, struct video_buffer)       /* Get frame buffer */
 160 #define VIDIOCSFBUF             _IOW('v',12, struct video_buffer)       /* Set frame buffer - root only */
 161 #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) */
 162 #define VIDIOCGFREQ             _IOR('v',14, unsigned long)             /* Set tuner */
 163 #define VIDIOCSFREQ             _IOW('v',15, unsigned long)             /* Set tuner */
 164 #define VIDIOCGAUDIO            _IOR('v',16, struct video_audio)        /* Get audio info */
 165 #define VIDIOCSAUDIO            _IOW('v',17, struct video_audio)        /* Audio source, mute etc */
 166
 167
 168 #define BASE_VIDIOCPRIVATE      192             /* 192-255 are private */
 169
 170
 171 #define VID_HARDWARE_BT848      1
 172 #define VID_HARDWARE_QCAM_BW    2
 173 #define VID_HARDWARE_PMS        3
 174 #define VID_HARDWARE_QCAM_C     4
 175
 176 /*
 177  *      Initialiser list
 178  */
 179
 180 struct video_init
 181 {
 182         char *name;
 183         int (*init)(struct video_init *);
 184 };
 185
 186 #endif