include/linux/videodev.h

   1 #ifndef __LINUX_VIDEODEV_H
   2 #define __LINUX_VIDEODEV_H
   3
   4 #ifdef __KERNEL__
   5
   6 #include <linux/poll.h>
   7
   8 struct video_device
   9 {
  10         char name[32];
  11         int type;
  12         int hardware;
  13
  14         int (*open)(struct video_device *, int mode);
  15         void (*close)(struct video_device *);
  16         long (*read)(struct video_device *, char *, unsigned long, int noblock);
  17         /* Do we need a write method ? */
  18         long (*write)(struct video_device *, const char *, unsigned long, int noblock);
  19         unsigned int (*poll)(struct video_device *, struct file *, poll_table *);
  20         int (*ioctl)(struct video_device *, unsigned int , void *);
  21         int (*mmap)(struct video_device *, const char *, unsigned long);
  22         int (*initialize)(struct video_device *);
  23         void *priv;             /* Used to be 'private' but that upsets C++ */
  24         int busy;
  25         int minor;
  26 };
  27
  28 extern int videodev_init(void);
  29 #define VIDEO_MAJOR     81
  30 extern int video_register_device(struct video_device *, int type);
  31
  32 #define VFL_TYPE_GRABBER        0
  33 #define VFL_TYPE_VBI            1
  34 #define VFL_TYPE_RADIO          2
  35 #define VFL_TYPE_VTX            3
  36
  37 extern void video_unregister_device(struct video_device *);
  38 #endif
  39
  40
  41 #define VID_TYPE_CAPTURE        1       /* Can capture */
  42 #define VID_TYPE_TUNER          2       /* Can tune */
  43 #define VID_TYPE_TELETEXT       4       /* Does teletext */
  44 #define VID_TYPE_OVERLAY        8       /* Overlay onto frame buffer */
  45 #define VID_TYPE_CHROMAKEY      16      /* Overlay by chromakey */
  46 #define VID_TYPE_CLIPPING       32      /* Can clip */
  47 #define VID_TYPE_FRAMERAM       64      /* Uses the frame buffer memory */
  48 #define VID_TYPE_SCALES         128     /* Scalable */
  49 #define VID_TYPE_MONOCHROME     256     /* Monochrome only */
  50 #define VID_TYPE_SUBCAPTURE     512     /* Can capture subareas of the image */
  51
  52 struct video_capability
  53 {
  54         char name[32];
  55         int type;
  56         int channels;   /* Num channels */
  57         int audios;     /* Num audio devices */
  58         int maxwidth;   /* Supported width */
  59         int maxheight;  /* And height */
  60         int minwidth;   /* Supported width */
  61         int minheight;  /* And height */
  62 };
  63
  64
  65 struct video_channel
  66 {
  67         int channel;
  68         char name[32];
  69         int tuners;
  70         __u32  flags;
  71 #define VIDEO_VC_TUNER          1       /* Channel has a tuner */
  72 #define VIDEO_VC_AUDIO          2       /* Channel has audio */
  73         __u16  type;
  74 #define VIDEO_TYPE_TV           1
  75 #define VIDEO_TYPE_CAMERA       2
  76         __u16 norm;                     /* Norm set by channel */
  77 };
  78
  79 struct video_tuner
  80 {
  81         int tuner;
  82         char name[32];
  83         ulong rangelow, rangehigh;      /* Tuner range */
  84         __u32 flags;
  85 #define VIDEO_TUNER_PAL         1
  86 #define VIDEO_TUNER_NTSC        2
  87 #define VIDEO_TUNER_SECAM       4
  88 #define VIDEO_TUNER_LOW         8       /* Uses KHz not MHz */
  89 #define VIDEO_TUNER_NORM        16      /* Tuner can set norm */
  90 #define VIDEO_TUNER_STEREO_ON   128     /* Tuner is seeing stereo */
  91         __u16 mode;                     /* PAL/NTSC/SECAM/OTHER */
  92 #define VIDEO_MODE_PAL          0
  93 #define VIDEO_MODE_NTSC         1
  94 #define VIDEO_MODE_SECAM        2
  95 #define VIDEO_MODE_AUTO         3
  96         __u16 signal;                   /* Signal strength 16bit scale */
  97 };
  98
  99 struct video_picture
 100 {
 101         __u16   brightness;
 102         __u16   hue;
 103         __u16   colour;
 104         __u16   contrast;
 105         __u16   whiteness;      /* Black and white only */
 106         __u16   depth;          /* Capture depth */
 107         __u16   palette;        /* Palette in use */
 108 #define VIDEO_PALETTE_GREY      1       /* Linear greyscale */
 109 #define VIDEO_PALETTE_HI240     2       /* High 240 cube (BT848) */
 110 #define VIDEO_PALETTE_RGB565    3       /* 565 16 bit RGB */
 111 #define VIDEO_PALETTE_RGB24     4       /* 24bit RGB */
 112 #define VIDEO_PALETTE_RGB32     5       /* 32bit RGB */
 113 #define VIDEO_PALETTE_RGB555    6       /* 555 15bit RGB */
 114 #define VIDEO_PALETTE_YUV422    7       /* YUV422 capture */
 115 #define VIDEO_PALETTE_YUYV      8
 116 #define VIDEO_PALETTE_UYVY      9       /* The great thing about standards is ... */
 117 #define VIDEO_PALETTE_YUV420    10
 118 #define VIDEO_PALETTE_YUV411    11      /* YUV411 capture */
 119 #define VIDEO_PALETTE_RAW       12      /* RAW capture (BT848) */
 120 #define VIDEO_PALETTE_YUV422P   13      /* YUV 4:2:2 Planar */
 121 #define VIDEO_PALETTE_YUV411P   14      /* YUV 4:1:1 Planar */
 122 };
 123
 124 struct video_audio
 125 {
 126         int     audio;          /* Audio channel */
 127         __u16   volume;         /* If settable */
 128         __u16   bass, treble;
 129         __u32   flags;
 130 #define VIDEO_AUDIO_MUTE        1
 131 #define VIDEO_AUDIO_MUTABLE     2
 132 #define VIDEO_AUDIO_VOLUME      4
 133 #define VIDEO_AUDIO_BASS        8
 134 #define VIDEO_AUDIO_TREBLE      16
 135         char    name[16];
 136 #define VIDEO_SOUND_MONO        1
 137 #define VIDEO_SOUND_STEREO      2
 138 #define VIDEO_SOUND_LANG1       3
 139 #define VIDEO_SOUND_LANG2       4
 140         __u16   mode;
 141         __u16   balance;        /* Stereo balance */
 142         __u16   step;           /* Step actual volume uses */
 143 };
 144
 145 struct video_clip
 146 {
 147         __s32   x,y;
 148         __s32   width, height;
 149         struct  video_clip *next;       /* For user use/driver use only */
 150 };
 151
 152 struct video_window
 153 {
 154         __u32   x,y;                    /* Position of window */
 155         __u32   width,height;           /* Its size */
 156         __u32   chromakey;
 157         __u32   flags;
 158         struct  video_clip *clips;      /* Set only */
 159         int     clipcount;
 160 #define VIDEO_WINDOW_INTERLACE  1
 161 };
 162
 163 struct video_capture
 164 {
 165         __u32   x,y;                    /* Offsets into image */
 166         __u32   width, height;          /* Area to capture */
 167         __u16   decimation;             /* Decimation divder */
 168         __u16   flags;                  /* Flags for capture */
 169 #define VIDEO_CAPTURE_ODD               0       /* Temporal */
 170 #define VIDEO_CAPTURE_EVEN              1
 171 };
 172
 173 struct video_buffer
 174 {
 175         void    *base;
 176         int     height,width;
 177         int     depth;
 178         int     bytesperline;
 179 };
 180
 181 struct video_mmap
 182 {
 183         unsigned        int frame;              /* Frame (0 - n) for double buffer */
 184         int             height,width;
 185         unsigned        int format;             /* should be VIDEO_PALETTE_* */
 186 };
 187
 188 struct video_key
 189 {
 190         __u8    key[8];
 191         __u32   flags;
 192 };
 193
 194
 195 #define VIDEO_MAX_FRAME         32
 196
 197 struct video_mbuf
 198 {
 199         int     size;           /* Total memory to map */
 200         int     frames;         /* Frames */
 201         int     offsets[VIDEO_MAX_FRAME];
 202 };
 203
 204
 205 #define         VIDEO_NO_UNIT   (-1)
 206
 207
 208 struct video_unit
 209 {
 210         int     video;          /* Video minor */
 211         int     vbi;            /* VBI minor */
 212         int     radio;          /* Radio minor */
 213         int     audio;          /* Audio minor */
 214         int     teletext;       /* Teletext minor */
 215 };
 216
 217 #define VIDIOCGCAP              _IOR('v',1,struct video_capability)     /* Get capabilities */
 218 #define VIDIOCGCHAN             _IOWR('v',2,struct video_channel)       /* Get channel info (sources) */
 219 #define VIDIOCSCHAN             _IOW('v',3,struct video_channel)        /* Set channel  */
 220 #define VIDIOCGTUNER            _IOWR('v',4,struct video_tuner)         /* Get tuner abilities */
 221 #define VIDIOCSTUNER            _IOW('v',5,struct video_tuner)          /* Tune the tuner for the current channel */
 222 #define VIDIOCGPICT             _IOR('v',6,struct video_picture)        /* Get picture properties */
 223 #define VIDIOCSPICT             _IOW('v',7,struct video_picture)        /* Set picture properties */
 224 #define VIDIOCCAPTURE           _IOW('v',8,int)                         /* Start, end capture */
 225 #define VIDIOCGWIN              _IOR('v',9, struct video_window)        /* Set the video overlay window */
 226 #define VIDIOCSWIN              _IOW('v',10, struct video_window)       /* Set the video overlay window - passes clip list for hardware smarts , chromakey etc */
 227 #define VIDIOCGFBUF             _IOR('v',11, struct video_buffer)       /* Get frame buffer */
 228 #define VIDIOCSFBUF             _IOW('v',12, struct video_buffer)       /* Set frame buffer - root only */
 229 #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) */
 230 #define VIDIOCGFREQ             _IOR('v',14, unsigned long)             /* Set tuner */
 231 #define VIDIOCSFREQ             _IOW('v',15, unsigned long)             /* Set tuner */
 232 #define VIDIOCGAUDIO            _IOR('v',16, struct video_audio)        /* Get audio info */
 233 #define VIDIOCSAUDIO            _IOW('v',17, struct video_audio)        /* Audio source, mute etc */
 234 #define VIDIOCSYNC              _IOW('v',18, int)                       /* Sync with mmap grabbing */
 235 #define VIDIOCMCAPTURE          _IOW('v',19, struct video_mmap)         /* Grab frames */
 236 #define VIDIOCGMBUF             _IOR('v', 20, struct video_mbuf)        /* Memory map buffer info */
 237 #define VIDIOCGUNIT             _IOR('v', 21, struct video_unit)        /* Get attached units */
 238 #define VIDIOCGCAPTURE          _IOR('v',22, struct video_capture)      /* Get frame buffer */
 239 #define VIDIOCSCAPTURE          _IOW('v',23, struct video_capture)      /* Set frame buffer - root only */
 240
 241 #define BASE_VIDIOCPRIVATE      192             /* 192-255 are private */
 242
 243
 244 #define VID_HARDWARE_BT848      1
 245 #define VID_HARDWARE_QCAM_BW    2
 246 #define VID_HARDWARE_PMS        3
 247 #define VID_HARDWARE_QCAM_C     4
 248 #define VID_HARDWARE_PSEUDO     5
 249 #define VID_HARDWARE_SAA5249    6
 250 #define VID_HARDWARE_AZTECH     7
 251 #define VID_HARDWARE_SF16MI     8
 252 #define VID_HARDWARE_RTRACK     9
 253 #define VID_HARDWARE_ZOLTRIX    10
 254 #define VID_HARDWARE_SAA7146    11
 255 #define VID_HARDWARE_VIDEUM     12      /* Reserved for Winnov videum */
 256 #define VID_HARDWARE_RTRACK2    13
 257 #define VID_HARDWARE_PERMEDIA2  14      /* Reserved for Permedia2 */
 258 #define VID_HARDWARE_RIVA128    15      /* Reserved for RIVA 128 */
 259
 260 /*
 261  *      Initialiser list
 262  */
 263
 264 struct video_init
 265 {
 266         char *name;
 267         int (*init)(struct video_init *);
 268 };
 269
 270 #endif