The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/compat/linux/linux_videodev2.h

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    1 /*
    2  * This header comes from linux, but it has no license. The author
    3  * (Bill Dirks) gave explicit permissions to use it in FreeBSD.
    4  * The FreeBSD vendor branch for v4l gives a more detailed description
    5  * about this in the README.
    6  *
    7  * $FreeBSD: releng/9.0/sys/compat/linux/linux_videodev2.h 221424 2011-05-04 08:41:55Z netchild $
    8  */
    9 
   10 #ifndef __LINUX_VIDEODEV2_H
   11 #define __LINUX_VIDEODEV2_H
   12 /*
   13  *      Video for Linux Two
   14  *
   15  *      Header file for v4l or V4L2 drivers and applications, for
   16  *      Linux kernels 2.2.x or 2.4.x.
   17  *
   18  *      See http://bytesex.org/v4l/ for API specs and other
   19  *      v4l2 documentation.
   20  *
   21  *      Author: Bill Dirks <bdirks@pacbell.net>
   22  *              Justin Schoeman
   23  *              et al.
   24  */
   25 #ifdef __FreeBSD__
   26 #define __user
   27 typedef uint64_t        __u64;
   28 typedef int64_t         __s64;
   29 #else
   30 #ifdef __KERNEL__
   31 #include <linux/time.h> /* need struct timeval */
   32 #include <linux/poll.h>
   33 #include <linux/device.h>
   34 #include <linux/mutex.h>
   35 #endif
   36 #include <linux/compiler.h> /* need __user */
   37 #endif
   38 
   39 
   40 #define OBSOLETE_OWNER 1 /* It will be removed for 2.6.17 */
   41 #define HAVE_V4L2 1
   42 
   43 /*
   44  * Common stuff for both V4L1 and V4L2
   45  * Moved from videodev.h
   46  */
   47 
   48 #define VIDEO_MAX_FRAME               32
   49 
   50 #define VID_TYPE_CAPTURE        1       /* Can capture */
   51 #define VID_TYPE_TUNER          2       /* Can tune */
   52 #define VID_TYPE_TELETEXT       4       /* Does teletext */
   53 #define VID_TYPE_OVERLAY        8       /* Overlay onto frame buffer */
   54 #define VID_TYPE_CHROMAKEY      16      /* Overlay by chromakey */
   55 #define VID_TYPE_CLIPPING       32      /* Can clip */
   56 #define VID_TYPE_FRAMERAM       64      /* Uses the frame buffer memory */
   57 #define VID_TYPE_SCALES         128     /* Scalable */
   58 #define VID_TYPE_MONOCHROME     256     /* Monochrome only */
   59 #define VID_TYPE_SUBCAPTURE     512     /* Can capture subareas of the image */
   60 #define VID_TYPE_MPEG_DECODER   1024    /* Can decode MPEG streams */
   61 #define VID_TYPE_MPEG_ENCODER   2048    /* Can encode MPEG streams */
   62 #define VID_TYPE_MJPEG_DECODER  4096    /* Can decode MJPEG streams */
   63 #define VID_TYPE_MJPEG_ENCODER  8192    /* Can encode MJPEG streams */
   64 
   65 #ifdef __KERNEL__
   66 
   67 /* Minor device allocation */
   68 #define MINOR_VFL_TYPE_GRABBER_MIN   0
   69 #define MINOR_VFL_TYPE_GRABBER_MAX  63
   70 #define MINOR_VFL_TYPE_RADIO_MIN    64
   71 #define MINOR_VFL_TYPE_RADIO_MAX   127
   72 #define MINOR_VFL_TYPE_VTX_MIN     192
   73 #define MINOR_VFL_TYPE_VTX_MAX     223
   74 #define MINOR_VFL_TYPE_VBI_MIN     224
   75 #define MINOR_VFL_TYPE_VBI_MAX     255
   76 
   77 #define VFL_TYPE_GRABBER        0
   78 #define VFL_TYPE_VBI            1
   79 #define VFL_TYPE_RADIO          2
   80 #define VFL_TYPE_VTX            3
   81 
   82 struct video_device
   83 {
   84         /* device info */
   85         struct device *dev;
   86         char name[32];
   87         int type;       /* v4l1 */
   88         int type2;      /* v4l2 */
   89         int hardware;
   90         int minor;
   91 
   92         /* device ops + callbacks */
   93         const struct file_operations *fops;
   94         void (*release)(struct video_device *vfd);
   95 
   96 
   97 #if OBSOLETE_OWNER /* to be removed in 2.6.15 */
   98         /* obsolete -- fops->owner is used instead */
   99         struct module *owner;
  100         /* dev->driver_data will be used instead some day.
  101          * Use the video_{get|set}_drvdata() helper functions,
  102          * so the switch over will be transparent for you.
  103          * Or use {pci|usb}_{get|set}_drvdata() directly. */
  104         void *priv;
  105 #endif
  106 
  107         /* for videodev.c intenal usage -- please don't touch */
  108         int users;                     /* video_exclusive_{open|close} ... */
  109         struct mutex lock;             /* ... helper function uses these   */
  110         char devfs_name[64];           /* devfs */
  111         struct class_device class_dev; /* sysfs */
  112 };
  113 
  114 #define VIDEO_MAJOR     81
  115 
  116 extern int video_register_device(struct video_device *, int type, int nr);
  117 extern void video_unregister_device(struct video_device *);
  118 extern int video_usercopy(struct inode *inode, struct file *file,
  119                           unsigned int cmd, unsigned long arg,
  120                           int (*func)(struct inode *inode, struct file *file,
  121                                       unsigned int cmd, void *arg));
  122 
  123 /* helper functions to alloc / release struct video_device, the
  124    later can be used for video_device->release() */
  125 struct video_device *video_device_alloc(void);
  126 void video_device_release(struct video_device *vfd);
  127 
  128 #endif
  129 
  130 /*
  131  *      M I S C E L L A N E O U S
  132  */
  133 
  134 /*  Four-character-code (FOURCC) */
  135 #define v4l2_fourcc(a,b,c,d)\
  136         (((__u32)(a)<<0)|((__u32)(b)<<8)|((__u32)(c)<<16)|((__u32)(d)<<24))
  137 
  138 /*
  139  *      E N U M S
  140  */
  141 enum v4l2_field {
  142         V4L2_FIELD_ANY        = 0, /* driver can choose from none,
  143                                       top, bottom, interlaced
  144                                       depending on whatever it thinks
  145                                       is approximate ... */
  146         V4L2_FIELD_NONE       = 1, /* this device has no fields ... */
  147         V4L2_FIELD_TOP        = 2, /* top field only */
  148         V4L2_FIELD_BOTTOM     = 3, /* bottom field only */
  149         V4L2_FIELD_INTERLACED = 4, /* both fields interlaced */
  150         V4L2_FIELD_SEQ_TB     = 5, /* both fields sequential into one
  151                                       buffer, top-bottom order */
  152         V4L2_FIELD_SEQ_BT     = 6, /* same as above + bottom-top order */
  153         V4L2_FIELD_ALTERNATE  = 7, /* both fields alternating into
  154                                       separate buffers */
  155 };
  156 #define V4L2_FIELD_HAS_TOP(field)       \
  157         ((field) == V4L2_FIELD_TOP      ||\
  158          (field) == V4L2_FIELD_INTERLACED ||\
  159          (field) == V4L2_FIELD_SEQ_TB   ||\
  160          (field) == V4L2_FIELD_SEQ_BT)
  161 #define V4L2_FIELD_HAS_BOTTOM(field)    \
  162         ((field) == V4L2_FIELD_BOTTOM   ||\
  163          (field) == V4L2_FIELD_INTERLACED ||\
  164          (field) == V4L2_FIELD_SEQ_TB   ||\
  165          (field) == V4L2_FIELD_SEQ_BT)
  166 #define V4L2_FIELD_HAS_BOTH(field)      \
  167         ((field) == V4L2_FIELD_INTERLACED ||\
  168          (field) == V4L2_FIELD_SEQ_TB   ||\
  169          (field) == V4L2_FIELD_SEQ_BT)
  170 
  171 enum v4l2_buf_type {
  172         V4L2_BUF_TYPE_VIDEO_CAPTURE      = 1,
  173         V4L2_BUF_TYPE_VIDEO_OUTPUT       = 2,
  174         V4L2_BUF_TYPE_VIDEO_OVERLAY      = 3,
  175         V4L2_BUF_TYPE_VBI_CAPTURE        = 4,
  176         V4L2_BUF_TYPE_VBI_OUTPUT         = 5,
  177 #if 1
  178         /* Experimental Sliced VBI */
  179         V4L2_BUF_TYPE_SLICED_VBI_CAPTURE = 6,
  180         V4L2_BUF_TYPE_SLICED_VBI_OUTPUT  = 7,
  181 #endif
  182         V4L2_BUF_TYPE_PRIVATE            = 0x80,
  183 };
  184 
  185 enum v4l2_ctrl_type {
  186         V4L2_CTRL_TYPE_INTEGER       = 1,
  187         V4L2_CTRL_TYPE_BOOLEAN       = 2,
  188         V4L2_CTRL_TYPE_MENU          = 3,
  189         V4L2_CTRL_TYPE_BUTTON        = 4,
  190 };
  191 
  192 enum v4l2_tuner_type {
  193         V4L2_TUNER_RADIO             = 1,
  194         V4L2_TUNER_ANALOG_TV         = 2,
  195         V4L2_TUNER_DIGITAL_TV        = 3,
  196 };
  197 
  198 enum v4l2_memory {
  199         V4L2_MEMORY_MMAP             = 1,
  200         V4L2_MEMORY_USERPTR          = 2,
  201         V4L2_MEMORY_OVERLAY          = 3,
  202 };
  203 
  204 /* see also http://vektor.theorem.ca/graphics/ycbcr/ */
  205 enum v4l2_colorspace {
  206         /* ITU-R 601 -- broadcast NTSC/PAL */
  207         V4L2_COLORSPACE_SMPTE170M     = 1,
  208 
  209         /* 1125-Line (US) HDTV */
  210         V4L2_COLORSPACE_SMPTE240M     = 2,
  211 
  212         /* HD and modern captures. */
  213         V4L2_COLORSPACE_REC709        = 3,
  214 
  215         /* broken BT878 extents (601, luma range 16-253 instead of 16-235) */
  216         V4L2_COLORSPACE_BT878         = 4,
  217 
  218         /* These should be useful.  Assume 601 extents. */
  219         V4L2_COLORSPACE_470_SYSTEM_M  = 5,
  220         V4L2_COLORSPACE_470_SYSTEM_BG = 6,
  221 
  222         /* I know there will be cameras that send this.  So, this is
  223          * unspecified chromaticities and full 0-255 on each of the
  224          * Y'CbCr components
  225          */
  226         V4L2_COLORSPACE_JPEG          = 7,
  227 
  228         /* For RGB colourspaces, this is probably a good start. */
  229         V4L2_COLORSPACE_SRGB          = 8,
  230 };
  231 
  232 enum v4l2_priority {
  233         V4L2_PRIORITY_UNSET       = 0,  /* not initialized */
  234         V4L2_PRIORITY_BACKGROUND  = 1,
  235         V4L2_PRIORITY_INTERACTIVE = 2,
  236         V4L2_PRIORITY_RECORD      = 3,
  237         V4L2_PRIORITY_DEFAULT     = V4L2_PRIORITY_INTERACTIVE,
  238 };
  239 
  240 struct v4l2_rect {
  241         __s32   left;
  242         __s32   top;
  243         __s32   width;
  244         __s32   height;
  245 };
  246 
  247 struct v4l2_fract {
  248         __u32   numerator;
  249         __u32   denominator;
  250 };
  251 
  252 /*
  253  *      D R I V E R   C A P A B I L I T I E S
  254  */
  255 struct v4l2_capability
  256 {
  257         __u8    driver[16];     /* i.e. "bttv" */
  258         __u8    card[32];       /* i.e. "Hauppauge WinTV" */
  259         __u8    bus_info[32];   /* "PCI:" + pci_name(pci_dev) */
  260         __u32   version;        /* should use KERNEL_VERSION() */
  261         __u32   capabilities;   /* Device capabilities */
  262         __u32   reserved[4];
  263 };
  264 
  265 /* Values for 'capabilities' field */
  266 #define V4L2_CAP_VIDEO_CAPTURE          0x00000001  /* Is a video capture device */
  267 #define V4L2_CAP_VIDEO_OUTPUT           0x00000002  /* Is a video output device */
  268 #define V4L2_CAP_VIDEO_OVERLAY          0x00000004  /* Can do video overlay */
  269 #define V4L2_CAP_VBI_CAPTURE            0x00000010  /* Is a raw VBI capture device */
  270 #define V4L2_CAP_VBI_OUTPUT             0x00000020  /* Is a raw VBI output device */
  271 #if 1
  272 #define V4L2_CAP_SLICED_VBI_CAPTURE     0x00000040  /* Is a sliced VBI capture device */
  273 #define V4L2_CAP_SLICED_VBI_OUTPUT      0x00000080  /* Is a sliced VBI output device */
  274 #endif
  275 #define V4L2_CAP_RDS_CAPTURE            0x00000100  /* RDS data capture */
  276 
  277 #define V4L2_CAP_TUNER                  0x00010000  /* has a tuner */
  278 #define V4L2_CAP_AUDIO                  0x00020000  /* has audio support */
  279 #define V4L2_CAP_RADIO                  0x00040000  /* is a radio device */
  280 
  281 #define V4L2_CAP_READWRITE              0x01000000  /* read/write systemcalls */
  282 #define V4L2_CAP_ASYNCIO                0x02000000  /* async I/O */
  283 #define V4L2_CAP_STREAMING              0x04000000  /* streaming I/O ioctls */
  284 
  285 /*
  286  *      V I D E O   I M A G E   F O R M A T
  287  */
  288 
  289 struct v4l2_pix_format
  290 {
  291         __u32                   width;
  292         __u32                   height;
  293         __u32                   pixelformat;
  294         enum v4l2_field         field;
  295         __u32                   bytesperline;   /* for padding, zero if unused */
  296         __u32                   sizeimage;
  297         enum v4l2_colorspace    colorspace;
  298         __u32                   priv;           /* private data, depends on pixelformat */
  299 };
  300 
  301 /*           Pixel format    FOURCC                  depth  Description   */
  302 #define V4L2_PIX_FMT_RGB332  v4l2_fourcc('R','G','B','1') /*  8  RGB-3-3-2     */
  303 #define V4L2_PIX_FMT_RGB555  v4l2_fourcc('R','G','B','O') /* 16  RGB-5-5-5     */
  304 #define V4L2_PIX_FMT_RGB565  v4l2_fourcc('R','G','B','P') /* 16  RGB-5-6-5     */
  305 #define V4L2_PIX_FMT_RGB555X v4l2_fourcc('R','G','B','Q') /* 16  RGB-5-5-5 BE  */
  306 #define V4L2_PIX_FMT_RGB565X v4l2_fourcc('R','G','B','R') /* 16  RGB-5-6-5 BE  */
  307 #define V4L2_PIX_FMT_BGR24   v4l2_fourcc('B','G','R','3') /* 24  BGR-8-8-8     */
  308 #define V4L2_PIX_FMT_RGB24   v4l2_fourcc('R','G','B','3') /* 24  RGB-8-8-8     */
  309 #define V4L2_PIX_FMT_BGR32   v4l2_fourcc('B','G','R','4') /* 32  BGR-8-8-8-8   */
  310 #define V4L2_PIX_FMT_RGB32   v4l2_fourcc('R','G','B','4') /* 32  RGB-8-8-8-8   */
  311 #define V4L2_PIX_FMT_GREY    v4l2_fourcc('G','R','E','Y') /*  8  Greyscale     */
  312 #define V4L2_PIX_FMT_YVU410  v4l2_fourcc('Y','V','U','9') /*  9  YVU 4:1:0     */
  313 #define V4L2_PIX_FMT_YVU420  v4l2_fourcc('Y','V','1','2') /* 12  YVU 4:2:0     */
  314 #define V4L2_PIX_FMT_YUYV    v4l2_fourcc('Y','U','Y','V') /* 16  YUV 4:2:2     */
  315 #define V4L2_PIX_FMT_UYVY    v4l2_fourcc('U','Y','V','Y') /* 16  YUV 4:2:2     */
  316 #define V4L2_PIX_FMT_YUV422P v4l2_fourcc('4','2','2','P') /* 16  YVU422 planar */
  317 #define V4L2_PIX_FMT_YUV411P v4l2_fourcc('4','1','1','P') /* 16  YVU411 planar */
  318 #define V4L2_PIX_FMT_Y41P    v4l2_fourcc('Y','4','1','P') /* 12  YUV 4:1:1     */
  319 
  320 /* two planes -- one Y, one Cr + Cb interleaved  */
  321 #define V4L2_PIX_FMT_NV12    v4l2_fourcc('N','V','1','2') /* 12  Y/CbCr 4:2:0  */
  322 #define V4L2_PIX_FMT_NV21    v4l2_fourcc('N','V','2','1') /* 12  Y/CrCb 4:2:0  */
  323 
  324 /*  The following formats are not defined in the V4L2 specification */
  325 #define V4L2_PIX_FMT_YUV410  v4l2_fourcc('Y','U','V','9') /*  9  YUV 4:1:0     */
  326 #define V4L2_PIX_FMT_YUV420  v4l2_fourcc('Y','U','1','2') /* 12  YUV 4:2:0     */
  327 #define V4L2_PIX_FMT_YYUV    v4l2_fourcc('Y','Y','U','V') /* 16  YUV 4:2:2     */
  328 #define V4L2_PIX_FMT_HI240   v4l2_fourcc('H','I','2','4') /*  8  8-bit color   */
  329 
  330 /* see http://www.siliconimaging.com/RGB%20Bayer.htm */
  331 #define V4L2_PIX_FMT_SBGGR8  v4l2_fourcc('B','A','8','1') /*  8  BGBG.. GRGR.. */
  332 
  333 /* compressed formats */
  334 #define V4L2_PIX_FMT_MJPEG    v4l2_fourcc('M','J','P','G') /* Motion-JPEG   */
  335 #define V4L2_PIX_FMT_JPEG     v4l2_fourcc('J','P','E','G') /* JFIF JPEG     */
  336 #define V4L2_PIX_FMT_DV       v4l2_fourcc('d','v','s','d') /* 1394          */
  337 #define V4L2_PIX_FMT_MPEG     v4l2_fourcc('M','P','E','G') /* MPEG          */
  338 
  339 /*  Vendor-specific formats   */
  340 #define V4L2_PIX_FMT_WNVA     v4l2_fourcc('W','N','V','A') /* Winnov hw compress */
  341 #define V4L2_PIX_FMT_SN9C10X  v4l2_fourcc('S','9','1','') /* SN9C10x compression */
  342 #define V4L2_PIX_FMT_PWC1     v4l2_fourcc('P','W','C','1') /* pwc older webcam */
  343 #define V4L2_PIX_FMT_PWC2     v4l2_fourcc('P','W','C','2') /* pwc newer webcam */
  344 #define V4L2_PIX_FMT_ET61X251 v4l2_fourcc('E','6','2','5') /* ET61X251 compression */
  345 
  346 /*
  347  *      F O R M A T   E N U M E R A T I O N
  348  */
  349 struct v4l2_fmtdesc
  350 {
  351         __u32               index;             /* Format number      */
  352         enum v4l2_buf_type  type;              /* buffer type        */
  353         __u32               flags;
  354         __u8                description[32];   /* Description string */
  355         __u32               pixelformat;       /* Format fourcc      */
  356         __u32               reserved[4];
  357 };
  358 
  359 #define V4L2_FMT_FLAG_COMPRESSED 0x0001
  360 
  361 
  362 /*
  363  *      T I M E C O D E
  364  */
  365 struct v4l2_timecode
  366 {
  367         __u32   type;
  368         __u32   flags;
  369         __u8    frames;
  370         __u8    seconds;
  371         __u8    minutes;
  372         __u8    hours;
  373         __u8    userbits[4];
  374 };
  375 
  376 /*  Type  */
  377 #define V4L2_TC_TYPE_24FPS              1
  378 #define V4L2_TC_TYPE_25FPS              2
  379 #define V4L2_TC_TYPE_30FPS              3
  380 #define V4L2_TC_TYPE_50FPS              4
  381 #define V4L2_TC_TYPE_60FPS              5
  382 
  383 /*  Flags  */
  384 #define V4L2_TC_FLAG_DROPFRAME          0x0001 /* "drop-frame" mode */
  385 #define V4L2_TC_FLAG_COLORFRAME         0x0002
  386 #define V4L2_TC_USERBITS_field          0x000C
  387 #define V4L2_TC_USERBITS_USERDEFINED    0x0000
  388 #define V4L2_TC_USERBITS_8BITCHARS      0x0008
  389 /* The above is based on SMPTE timecodes */
  390 
  391 
  392 /*
  393  *      M P E G   C O M P R E S S I O N   P A R A M E T E R S
  394  *
  395  *  ### WARNING: this is still work-in-progress right now, most likely
  396  *  ###          there will be some incompatible changes.
  397  *
  398  */
  399 
  400 
  401 enum v4l2_bitrate_mode {
  402         V4L2_BITRATE_NONE = 0,  /* not specified */
  403         V4L2_BITRATE_CBR,       /* constant bitrate */
  404         V4L2_BITRATE_VBR,       /* variable bitrate */
  405 };
  406 struct v4l2_bitrate {
  407         /* rates are specified in kbit/sec */
  408         enum v4l2_bitrate_mode  mode;
  409         __u32                   min;
  410         __u32                   target;  /* use this one for CBR */
  411         __u32                   max;
  412 };
  413 
  414 enum v4l2_mpeg_streamtype {
  415         V4L2_MPEG_SS_1,         /* MPEG-1 system stream */
  416         V4L2_MPEG_PS_2,         /* MPEG-2 program stream */
  417         V4L2_MPEG_TS_2,         /* MPEG-2 transport stream */
  418         V4L2_MPEG_PS_DVD,       /* MPEG-2 program stream with DVD header fixups */
  419 };
  420 enum v4l2_mpeg_audiotype {
  421         V4L2_MPEG_AU_2_I,       /* MPEG-2 layer 1 */
  422         V4L2_MPEG_AU_2_II,      /* MPEG-2 layer 2 */
  423         V4L2_MPEG_AU_2_III,     /* MPEG-2 layer 3 */
  424         V4L2_MPEG_AC3,          /* AC3 */
  425         V4L2_MPEG_LPCM,         /* LPCM */
  426 };
  427 enum v4l2_mpeg_videotype {
  428         V4L2_MPEG_VI_1,         /* MPEG-1 */
  429         V4L2_MPEG_VI_2,         /* MPEG-2 */
  430 };
  431 enum v4l2_mpeg_aspectratio {
  432         V4L2_MPEG_ASPECT_SQUARE = 1,   /* square pixel */
  433         V4L2_MPEG_ASPECT_4_3    = 2,   /*  4 : 3       */
  434         V4L2_MPEG_ASPECT_16_9   = 3,   /* 16 : 9       */
  435         V4L2_MPEG_ASPECT_1_221  = 4,   /*  1 : 2,21    */
  436 };
  437 
  438 struct v4l2_mpeg_compression {
  439         /* general */
  440         enum v4l2_mpeg_streamtype       st_type;
  441         struct v4l2_bitrate             st_bitrate;
  442 
  443         /* transport streams */
  444         __u16                           ts_pid_pmt;
  445         __u16                           ts_pid_audio;
  446         __u16                           ts_pid_video;
  447         __u16                           ts_pid_pcr;
  448 
  449         /* program stream */
  450         __u16                           ps_size;
  451         __u16                           reserved_1;    /* align */
  452 
  453         /* audio */
  454         enum v4l2_mpeg_audiotype        au_type;
  455         struct v4l2_bitrate             au_bitrate;
  456         __u32                           au_sample_rate;
  457         __u8                            au_pesid;
  458         __u8                            reserved_2[3]; /* align */
  459 
  460         /* video */
  461         enum v4l2_mpeg_videotype        vi_type;
  462         enum v4l2_mpeg_aspectratio      vi_aspect_ratio;
  463         struct v4l2_bitrate             vi_bitrate;
  464         __u32                           vi_frame_rate;
  465         __u16                           vi_frames_per_gop;
  466         __u16                           vi_bframes_count;
  467         __u8                            vi_pesid;
  468         __u8                            reserved_3[3]; /* align */
  469 
  470         /* misc flags */
  471         __u32                           closed_gops:1;
  472         __u32                           pulldown:1;
  473         __u32                           reserved_4:30; /* align */
  474 
  475         /* I don't expect the above being perfect yet ;) */
  476         __u32                           reserved_5[8];
  477 };
  478 
  479 struct v4l2_jpegcompression
  480 {
  481         int quality;
  482 
  483         int  APPn;              /* Number of APP segment to be written,
  484                                  * must be 0..15 */
  485         int  APP_len;           /* Length of data in JPEG APPn segment */
  486         char APP_data[60];      /* Data in the JPEG APPn segment. */
  487 
  488         int  COM_len;           /* Length of data in JPEG COM segment */
  489         char COM_data[60];      /* Data in JPEG COM segment */
  490 
  491         __u32 jpeg_markers;     /* Which markers should go into the JPEG
  492                                  * output. Unless you exactly know what
  493                                  * you do, leave them untouched.
  494                                  * Inluding less markers will make the
  495                                  * resulting code smaller, but there will
  496                                  * be fewer aplications which can read it.
  497                                  * The presence of the APP and COM marker
  498                                  * is influenced by APP_len and COM_len
  499                                  * ONLY, not by this property! */
  500 
  501 #define V4L2_JPEG_MARKER_DHT (1<<3)    /* Define Huffman Tables */
  502 #define V4L2_JPEG_MARKER_DQT (1<<4)    /* Define Quantization Tables */
  503 #define V4L2_JPEG_MARKER_DRI (1<<5)    /* Define Restart Interval */
  504 #define V4L2_JPEG_MARKER_COM (1<<6)    /* Comment segment */
  505 #define V4L2_JPEG_MARKER_APP (1<<7)    /* App segment, driver will
  506                                         * allways use APP0 */
  507 };
  508 
  509 
  510 /*
  511  *      M E M O R Y - M A P P I N G   B U F F E R S
  512  */
  513 struct v4l2_requestbuffers
  514 {
  515         __u32                   count;
  516         enum v4l2_buf_type      type;
  517         enum v4l2_memory        memory;
  518         __u32                   reserved[2];
  519 };
  520 
  521 struct v4l2_buffer
  522 {
  523         __u32                   index;
  524         enum v4l2_buf_type      type;
  525         __u32                   bytesused;
  526         __u32                   flags;
  527         enum v4l2_field         field;
  528         struct timeval          timestamp;
  529         struct v4l2_timecode    timecode;
  530         __u32                   sequence;
  531 
  532         /* memory location */
  533         enum v4l2_memory        memory;
  534         union {
  535                 __u32           offset;
  536                 unsigned long   userptr;
  537         } m;
  538         __u32                   length;
  539         __u32                   input;
  540         __u32                   reserved;
  541 };
  542 
  543 /*  Flags for 'flags' field */
  544 #define V4L2_BUF_FLAG_MAPPED    0x0001  /* Buffer is mapped (flag) */
  545 #define V4L2_BUF_FLAG_QUEUED    0x0002  /* Buffer is queued for processing */
  546 #define V4L2_BUF_FLAG_DONE      0x0004  /* Buffer is ready */
  547 #define V4L2_BUF_FLAG_KEYFRAME  0x0008  /* Image is a keyframe (I-frame) */
  548 #define V4L2_BUF_FLAG_PFRAME    0x0010  /* Image is a P-frame */
  549 #define V4L2_BUF_FLAG_BFRAME    0x0020  /* Image is a B-frame */
  550 #define V4L2_BUF_FLAG_TIMECODE  0x0100  /* timecode field is valid */
  551 #define V4L2_BUF_FLAG_INPUT     0x0200  /* input field is valid */
  552 
  553 /*
  554  *      O V E R L A Y   P R E V I E W
  555  */
  556 struct v4l2_framebuffer
  557 {
  558         __u32                   capability;
  559         __u32                   flags;
  560 /* FIXME: in theory we should pass something like PCI device + memory
  561  * region + offset instead of some physical address */
  562         void*                   base;
  563         struct v4l2_pix_format  fmt;
  564 };
  565 /*  Flags for the 'capability' field. Read only */
  566 #define V4L2_FBUF_CAP_EXTERNOVERLAY     0x0001
  567 #define V4L2_FBUF_CAP_CHROMAKEY         0x0002
  568 #define V4L2_FBUF_CAP_LIST_CLIPPING     0x0004
  569 #define V4L2_FBUF_CAP_BITMAP_CLIPPING   0x0008
  570 /*  Flags for the 'flags' field. */
  571 #define V4L2_FBUF_FLAG_PRIMARY          0x0001
  572 #define V4L2_FBUF_FLAG_OVERLAY          0x0002
  573 #define V4L2_FBUF_FLAG_CHROMAKEY        0x0004
  574 
  575 struct v4l2_clip
  576 {
  577         struct v4l2_rect        c;
  578         struct v4l2_clip        __user *next;
  579 };
  580 
  581 struct v4l2_window
  582 {
  583         struct v4l2_rect        w;
  584         enum v4l2_field         field;
  585         __u32                   chromakey;
  586         struct v4l2_clip        __user *clips;
  587         __u32                   clipcount;
  588         void                    __user *bitmap;
  589 };
  590 
  591 
  592 /*
  593  *      C A P T U R E   P A R A M E T E R S
  594  */
  595 struct v4l2_captureparm
  596 {
  597         __u32              capability;    /*  Supported modes */
  598         __u32              capturemode;   /*  Current mode */
  599         struct v4l2_fract  timeperframe;  /*  Time per frame in .1us units */
  600         __u32              extendedmode;  /*  Driver-specific extensions */
  601         __u32              readbuffers;   /*  # of buffers for read */
  602         __u32              reserved[4];
  603 };
  604 /*  Flags for 'capability' and 'capturemode' fields */
  605 #define V4L2_MODE_HIGHQUALITY   0x0001  /*  High quality imaging mode */
  606 #define V4L2_CAP_TIMEPERFRAME   0x1000  /*  timeperframe field is supported */
  607 
  608 struct v4l2_outputparm
  609 {
  610         __u32              capability;   /*  Supported modes */
  611         __u32              outputmode;   /*  Current mode */
  612         struct v4l2_fract  timeperframe; /*  Time per frame in seconds */
  613         __u32              extendedmode; /*  Driver-specific extensions */
  614         __u32              writebuffers; /*  # of buffers for write */
  615         __u32              reserved[4];
  616 };
  617 
  618 /*
  619  *      I N P U T   I M A G E   C R O P P I N G
  620  */
  621 
  622 struct v4l2_cropcap {
  623         enum v4l2_buf_type      type;
  624         struct v4l2_rect        bounds;
  625         struct v4l2_rect        defrect;
  626         struct v4l2_fract       pixelaspect;
  627 };
  628 
  629 struct v4l2_crop {
  630         enum v4l2_buf_type      type;
  631         struct v4l2_rect        c;
  632 };
  633 
  634 /*
  635  *      A N A L O G   V I D E O   S T A N D A R D
  636  */
  637 
  638 typedef __u64 v4l2_std_id;
  639 
  640 /* one bit for each */
  641 #define V4L2_STD_PAL_B          ((v4l2_std_id)0x00000001)
  642 #define V4L2_STD_PAL_B1         ((v4l2_std_id)0x00000002)
  643 #define V4L2_STD_PAL_G          ((v4l2_std_id)0x00000004)
  644 #define V4L2_STD_PAL_H          ((v4l2_std_id)0x00000008)
  645 #define V4L2_STD_PAL_I          ((v4l2_std_id)0x00000010)
  646 #define V4L2_STD_PAL_D          ((v4l2_std_id)0x00000020)
  647 #define V4L2_STD_PAL_D1         ((v4l2_std_id)0x00000040)
  648 #define V4L2_STD_PAL_K          ((v4l2_std_id)0x00000080)
  649 
  650 #define V4L2_STD_PAL_M          ((v4l2_std_id)0x00000100)
  651 #define V4L2_STD_PAL_N          ((v4l2_std_id)0x00000200)
  652 #define V4L2_STD_PAL_Nc         ((v4l2_std_id)0x00000400)
  653 #define V4L2_STD_PAL_60         ((v4l2_std_id)0x00000800)
  654 
  655 #define V4L2_STD_NTSC_M         ((v4l2_std_id)0x00001000)
  656 #define V4L2_STD_NTSC_M_JP      ((v4l2_std_id)0x00002000)
  657 #define V4L2_STD_NTSC_443       ((v4l2_std_id)0x00004000)
  658 #define V4L2_STD_NTSC_M_KR      ((v4l2_std_id)0x00008000)
  659 
  660 #define V4L2_STD_SECAM_B        ((v4l2_std_id)0x00010000)
  661 #define V4L2_STD_SECAM_D        ((v4l2_std_id)0x00020000)
  662 #define V4L2_STD_SECAM_G        ((v4l2_std_id)0x00040000)
  663 #define V4L2_STD_SECAM_H        ((v4l2_std_id)0x00080000)
  664 #define V4L2_STD_SECAM_K        ((v4l2_std_id)0x00100000)
  665 #define V4L2_STD_SECAM_K1       ((v4l2_std_id)0x00200000)
  666 #define V4L2_STD_SECAM_L        ((v4l2_std_id)0x00400000)
  667 #define V4L2_STD_SECAM_LC       ((v4l2_std_id)0x00800000)
  668 
  669 /* ATSC/HDTV */
  670 #define V4L2_STD_ATSC_8_VSB     ((v4l2_std_id)0x01000000)
  671 #define V4L2_STD_ATSC_16_VSB    ((v4l2_std_id)0x02000000)
  672 
  673 /* some merged standards */
  674 #define V4L2_STD_MN     (V4L2_STD_PAL_M|V4L2_STD_PAL_N|V4L2_STD_PAL_Nc|V4L2_STD_NTSC)
  675 #define V4L2_STD_B      (V4L2_STD_PAL_B|V4L2_STD_PAL_B1|V4L2_STD_SECAM_B)
  676 #define V4L2_STD_GH     (V4L2_STD_PAL_G|V4L2_STD_PAL_H|V4L2_STD_SECAM_G|V4L2_STD_SECAM_H)
  677 #define V4L2_STD_DK     (V4L2_STD_PAL_DK|V4L2_STD_SECAM_DK)
  678 
  679 /* some common needed stuff */
  680 #define V4L2_STD_PAL_BG         (V4L2_STD_PAL_B         |\
  681                                  V4L2_STD_PAL_B1        |\
  682                                  V4L2_STD_PAL_G)
  683 #define V4L2_STD_PAL_DK         (V4L2_STD_PAL_D         |\
  684                                  V4L2_STD_PAL_D1        |\
  685                                  V4L2_STD_PAL_K)
  686 #define V4L2_STD_PAL            (V4L2_STD_PAL_BG        |\
  687                                  V4L2_STD_PAL_DK        |\
  688                                  V4L2_STD_PAL_H         |\
  689                                  V4L2_STD_PAL_I)
  690 #define V4L2_STD_NTSC           (V4L2_STD_NTSC_M        |\
  691                                  V4L2_STD_NTSC_M_JP     |\
  692                                  V4L2_STD_NTSC_M_KR)
  693 #define V4L2_STD_SECAM_DK       (V4L2_STD_SECAM_D       |\
  694                                  V4L2_STD_SECAM_K       |\
  695                                  V4L2_STD_SECAM_K1)
  696 #define V4L2_STD_SECAM          (V4L2_STD_SECAM_B       |\
  697                                  V4L2_STD_SECAM_G       |\
  698                                  V4L2_STD_SECAM_H       |\
  699                                  V4L2_STD_SECAM_DK      |\
  700                                  V4L2_STD_SECAM_L       |\
  701                                  V4L2_STD_SECAM_LC)
  702 
  703 #define V4L2_STD_525_60         (V4L2_STD_PAL_M         |\
  704                                  V4L2_STD_PAL_60        |\
  705                                  V4L2_STD_NTSC          |\
  706                                  V4L2_STD_NTSC_443)
  707 #define V4L2_STD_625_50         (V4L2_STD_PAL           |\
  708                                  V4L2_STD_PAL_N         |\
  709                                  V4L2_STD_PAL_Nc        |\
  710                                  V4L2_STD_SECAM)
  711 #define V4L2_STD_ATSC           (V4L2_STD_ATSC_8_VSB    |\
  712                                  V4L2_STD_ATSC_16_VSB)
  713 
  714 #define V4L2_STD_UNKNOWN        0
  715 #define V4L2_STD_ALL            (V4L2_STD_525_60        |\
  716                                  V4L2_STD_625_50)
  717 
  718 struct v4l2_standard
  719 {
  720         __u32                index;
  721         v4l2_std_id          id;
  722         __u8                 name[24];
  723         struct v4l2_fract    frameperiod; /* Frames, not fields */
  724         __u32                framelines;
  725         __u32                reserved[4];
  726 };
  727 
  728 
  729 /*
  730  *      V I D E O   I N P U T S
  731  */
  732 struct v4l2_input
  733 {
  734         __u32        index;             /*  Which input */
  735         __u8         name[32];          /*  Label */
  736         __u32        type;              /*  Type of input */
  737         __u32        audioset;          /*  Associated audios (bitfield) */
  738         __u32        tuner;             /*  Associated tuner */
  739         v4l2_std_id  std;
  740         __u32        status;
  741         __u32        reserved[4];
  742 };
  743 /*  Values for the 'type' field */
  744 #define V4L2_INPUT_TYPE_TUNER           1
  745 #define V4L2_INPUT_TYPE_CAMERA          2
  746 
  747 /* field 'status' - general */
  748 #define V4L2_IN_ST_NO_POWER    0x00000001  /* Attached device is off */
  749 #define V4L2_IN_ST_NO_SIGNAL   0x00000002
  750 #define V4L2_IN_ST_NO_COLOR    0x00000004
  751 
  752 /* field 'status' - analog */
  753 #define V4L2_IN_ST_NO_H_LOCK   0x00000100  /* No horizontal sync lock */
  754 #define V4L2_IN_ST_COLOR_KILL  0x00000200  /* Color killer is active */
  755 
  756 /* field 'status' - digital */
  757 #define V4L2_IN_ST_NO_SYNC     0x00010000  /* No synchronization lock */
  758 #define V4L2_IN_ST_NO_EQU      0x00020000  /* No equalizer lock */
  759 #define V4L2_IN_ST_NO_CARRIER  0x00040000  /* Carrier recovery failed */
  760 
  761 /* field 'status' - VCR and set-top box */
  762 #define V4L2_IN_ST_MACROVISION 0x01000000  /* Macrovision detected */
  763 #define V4L2_IN_ST_NO_ACCESS   0x02000000  /* Conditional access denied */
  764 #define V4L2_IN_ST_VTR         0x04000000  /* VTR time constant */
  765 
  766 /*
  767  *      V I D E O   O U T P U T S
  768  */
  769 struct v4l2_output
  770 {
  771         __u32        index;             /*  Which output */
  772         __u8         name[32];          /*  Label */
  773         __u32        type;              /*  Type of output */
  774         __u32        audioset;          /*  Associated audios (bitfield) */
  775         __u32        modulator;         /*  Associated modulator */
  776         v4l2_std_id  std;
  777         __u32        reserved[4];
  778 };
  779 /*  Values for the 'type' field */
  780 #define V4L2_OUTPUT_TYPE_MODULATOR              1
  781 #define V4L2_OUTPUT_TYPE_ANALOG                 2
  782 #define V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY       3
  783 
  784 /*
  785  *      C O N T R O L S
  786  */
  787 struct v4l2_control
  788 {
  789         __u32                id;
  790         __s32                value;
  791 };
  792 
  793 /*  Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
  794 struct v4l2_queryctrl
  795 {
  796         __u32                id;
  797         enum v4l2_ctrl_type  type;
  798         __u8                 name[32];  /* Whatever */
  799         __s32                minimum;   /* Note signedness */
  800         __s32                maximum;
  801         __s32                step;
  802         __s32                default_value;
  803         __u32                flags;
  804         __u32                reserved[2];
  805 };
  806 
  807 /*  Used in the VIDIOC_QUERYMENU ioctl for querying menu items */
  808 struct v4l2_querymenu
  809 {
  810         __u32           id;
  811         __u32           index;
  812         __u8            name[32];       /* Whatever */
  813         __u32           reserved;
  814 };
  815 
  816 /*  Control flags  */
  817 #define V4L2_CTRL_FLAG_DISABLED         0x0001
  818 #define V4L2_CTRL_FLAG_GRABBED          0x0002
  819 
  820 /*  Control IDs defined by V4L2 */
  821 #define V4L2_CID_BASE                   0x00980900
  822 /*  IDs reserved for driver specific controls */
  823 #define V4L2_CID_PRIVATE_BASE           0x08000000
  824 
  825 #define V4L2_CID_BRIGHTNESS             (V4L2_CID_BASE+0)
  826 #define V4L2_CID_CONTRAST               (V4L2_CID_BASE+1)
  827 #define V4L2_CID_SATURATION             (V4L2_CID_BASE+2)
  828 #define V4L2_CID_HUE                    (V4L2_CID_BASE+3)
  829 #define V4L2_CID_AUDIO_VOLUME           (V4L2_CID_BASE+5)
  830 #define V4L2_CID_AUDIO_BALANCE          (V4L2_CID_BASE+6)
  831 #define V4L2_CID_AUDIO_BASS             (V4L2_CID_BASE+7)
  832 #define V4L2_CID_AUDIO_TREBLE           (V4L2_CID_BASE+8)
  833 #define V4L2_CID_AUDIO_MUTE             (V4L2_CID_BASE+9)
  834 #define V4L2_CID_AUDIO_LOUDNESS         (V4L2_CID_BASE+10)
  835 #define V4L2_CID_BLACK_LEVEL            (V4L2_CID_BASE+11)
  836 #define V4L2_CID_AUTO_WHITE_BALANCE     (V4L2_CID_BASE+12)
  837 #define V4L2_CID_DO_WHITE_BALANCE       (V4L2_CID_BASE+13)
  838 #define V4L2_CID_RED_BALANCE            (V4L2_CID_BASE+14)
  839 #define V4L2_CID_BLUE_BALANCE           (V4L2_CID_BASE+15)
  840 #define V4L2_CID_GAMMA                  (V4L2_CID_BASE+16)
  841 #define V4L2_CID_WHITENESS              (V4L2_CID_GAMMA) /* ? Not sure */
  842 #define V4L2_CID_EXPOSURE               (V4L2_CID_BASE+17)
  843 #define V4L2_CID_AUTOGAIN               (V4L2_CID_BASE+18)
  844 #define V4L2_CID_GAIN                   (V4L2_CID_BASE+19)
  845 #define V4L2_CID_HFLIP                  (V4L2_CID_BASE+20)
  846 #define V4L2_CID_VFLIP                  (V4L2_CID_BASE+21)
  847 #define V4L2_CID_HCENTER                (V4L2_CID_BASE+22)
  848 #define V4L2_CID_VCENTER                (V4L2_CID_BASE+23)
  849 #define V4L2_CID_LASTP1                 (V4L2_CID_BASE+24) /* last CID + 1 */
  850 
  851 /*
  852  *      T U N I N G
  853  */
  854 struct v4l2_tuner
  855 {
  856         __u32                   index;
  857         __u8                    name[32];
  858         enum v4l2_tuner_type    type;
  859         __u32                   capability;
  860         __u32                   rangelow;
  861         __u32                   rangehigh;
  862         __u32                   rxsubchans;
  863         __u32                   audmode;
  864         __s32                   signal;
  865         __s32                   afc;
  866         __u32                   reserved[4];
  867 };
  868 
  869 struct v4l2_modulator
  870 {
  871         __u32                   index;
  872         __u8                    name[32];
  873         __u32                   capability;
  874         __u32                   rangelow;
  875         __u32                   rangehigh;
  876         __u32                   txsubchans;
  877         __u32                   reserved[4];
  878 };
  879 
  880 /*  Flags for the 'capability' field */
  881 #define V4L2_TUNER_CAP_LOW              0x0001
  882 #define V4L2_TUNER_CAP_NORM             0x0002
  883 #define V4L2_TUNER_CAP_STEREO           0x0010
  884 #define V4L2_TUNER_CAP_LANG2            0x0020
  885 #define V4L2_TUNER_CAP_SAP              0x0020
  886 #define V4L2_TUNER_CAP_LANG1            0x0040
  887 
  888 /*  Flags for the 'rxsubchans' field */
  889 #define V4L2_TUNER_SUB_MONO             0x0001
  890 #define V4L2_TUNER_SUB_STEREO           0x0002
  891 #define V4L2_TUNER_SUB_LANG2            0x0004
  892 #define V4L2_TUNER_SUB_SAP              0x0004
  893 #define V4L2_TUNER_SUB_LANG1            0x0008
  894 
  895 /*  Values for the 'audmode' field */
  896 #define V4L2_TUNER_MODE_MONO            0x0000
  897 #define V4L2_TUNER_MODE_STEREO          0x0001
  898 #define V4L2_TUNER_MODE_LANG2           0x0002
  899 #define V4L2_TUNER_MODE_SAP             0x0002
  900 #define V4L2_TUNER_MODE_LANG1           0x0003
  901 #define V4L2_TUNER_MODE_LANG1_LANG2     0x0004
  902 
  903 struct v4l2_frequency
  904 {
  905         __u32                 tuner;
  906         enum v4l2_tuner_type  type;
  907         __u32                 frequency;
  908         __u32                 reserved[8];
  909 };
  910 
  911 /*
  912  *      A U D I O
  913  */
  914 struct v4l2_audio
  915 {
  916         __u32   index;
  917         __u8    name[32];
  918         __u32   capability;
  919         __u32   mode;
  920         __u32   reserved[2];
  921 };
  922 /*  Flags for the 'capability' field */
  923 #define V4L2_AUDCAP_STEREO              0x00001
  924 #define V4L2_AUDCAP_AVL                 0x00002
  925 
  926 /*  Flags for the 'mode' field */
  927 #define V4L2_AUDMODE_AVL                0x00001
  928 
  929 struct v4l2_audioout
  930 {
  931         __u32   index;
  932         __u8    name[32];
  933         __u32   capability;
  934         __u32   mode;
  935         __u32   reserved[2];
  936 };
  937 
  938 /*
  939  *      D A T A   S E R V I C E S   ( V B I )
  940  *
  941  *      Data services API by Michael Schimek
  942  */
  943 
  944 /* Raw VBI */
  945 
  946 struct v4l2_vbi_format
  947 {
  948         __u32   sampling_rate;          /* in 1 Hz */
  949         __u32   offset;
  950         __u32   samples_per_line;
  951         __u32   sample_format;          /* V4L2_PIX_FMT_* */
  952         __s32   start[2];
  953         __u32   count[2];
  954         __u32   flags;                  /* V4L2_VBI_* */
  955         __u32   reserved[2];            /* must be zero */
  956 };
  957 
  958 /*  VBI flags  */
  959 #define V4L2_VBI_UNSYNC         (1<< 0)
  960 #define V4L2_VBI_INTERLACED     (1<< 1)
  961 
  962 #if 1
  963 /* Sliced VBI
  964  *
  965  *    This implements is a proposal V4L2 API to allow SLICED VBI
  966  * required for some hardware encoders. It should change without
  967  * notice in the definitive implementation.
  968  */
  969 
  970 struct v4l2_sliced_vbi_format
  971 {
  972         __u16   service_set;
  973         /* service_lines[0][...] specifies lines 0-23 (1-23 used) of the first field
  974            service_lines[1][...] specifies lines 0-23 (1-23 used) of the second field
  975                                  (equals frame lines 313-336 for 625 line video
  976                                   standards, 263-286 for 525 line standards) */
  977         __u16   service_lines[2][24];
  978         __u32   io_size;
  979         __u32   reserved[2];            /* must be zero */
  980 };
  981 
  982 /* Teletext World System Teletext
  983    (WST), defined on ITU-R BT.653-2 */
  984 #define V4L2_SLICED_TELETEXT_B          (0x0001)
  985 /* Video Program System, defined on ETS 300 231*/
  986 #define V4L2_SLICED_VPS                 (0x0400)
  987 /* Closed Caption, defined on EIA-608 */
  988 #define V4L2_SLICED_CAPTION_525         (0x1000)
  989 /* Wide Screen System, defined on ITU-R BT1119.1 */
  990 #define V4L2_SLICED_WSS_625             (0x4000)
  991 
  992 #define V4L2_SLICED_VBI_525             (V4L2_SLICED_CAPTION_525)
  993 #define V4L2_SLICED_VBI_625             (V4L2_SLICED_TELETEXT_B | V4L2_SLICED_VPS | V4L2_SLICED_WSS_625)
  994 
  995 
  996 struct v4l2_sliced_vbi_cap
  997 {
  998         __u16   service_set;
  999         /* service_lines[0][...] specifies lines 0-23 (1-23 used) of the first field
 1000            service_lines[1][...] specifies lines 0-23 (1-23 used) of the second field
 1001                                  (equals frame lines 313-336 for 625 line video
 1002                                   standards, 263-286 for 525 line standards) */
 1003         __u16   service_lines[2][24];
 1004         __u32   reserved[4];    /* must be 0 */
 1005 };
 1006 
 1007 struct v4l2_sliced_vbi_data
 1008 {
 1009         __u32   id;
 1010         __u32   field;          /* 0: first field, 1: second field */
 1011         __u32   line;           /* 1-23 */
 1012         __u32   reserved;       /* must be 0 */
 1013         __u8    data[48];
 1014 };
 1015 #endif
 1016 
 1017 /*
 1018  *      A G G R E G A T E   S T R U C T U R E S
 1019  */
 1020 
 1021 /*      Stream data format
 1022  */
 1023 struct v4l2_format
 1024 {
 1025         enum v4l2_buf_type type;
 1026         union
 1027         {
 1028                 struct v4l2_pix_format          pix;     // V4L2_BUF_TYPE_VIDEO_CAPTURE
 1029                 struct v4l2_window              win;     // V4L2_BUF_TYPE_VIDEO_OVERLAY
 1030                 struct v4l2_vbi_format          vbi;     // V4L2_BUF_TYPE_VBI_CAPTURE
 1031 #if 1
 1032                 struct v4l2_sliced_vbi_format   sliced;  // V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
 1033 #endif
 1034                 __u8    raw_data[200];                   // user-defined
 1035         } fmt;
 1036 };
 1037 
 1038 
 1039 /*      Stream type-dependent parameters
 1040  */
 1041 struct v4l2_streamparm
 1042 {
 1043         enum v4l2_buf_type type;
 1044         union
 1045         {
 1046                 struct v4l2_captureparm capture;
 1047                 struct v4l2_outputparm  output;
 1048                 __u8    raw_data[200];  /* user-defined */
 1049         } parm;
 1050 };
 1051 
 1052 
 1053 
 1054 /*
 1055  *      I O C T L   C O D E S   F O R   V I D E O   D E V I C E S
 1056  *
 1057  */
 1058 #define VIDIOC_QUERYCAP         _IOR  ('V',  0, struct v4l2_capability)
 1059 #define VIDIOC_RESERVED         _IO   ('V',  1)
 1060 #define VIDIOC_ENUM_FMT         _IOWR ('V',  2, struct v4l2_fmtdesc)
 1061 #define VIDIOC_G_FMT            _IOWR ('V',  4, struct v4l2_format)
 1062 #define VIDIOC_S_FMT            _IOWR ('V',  5, struct v4l2_format)
 1063 #define VIDIOC_G_MPEGCOMP       _IOR  ('V',  6, struct v4l2_mpeg_compression)
 1064 #define VIDIOC_S_MPEGCOMP       _IOW  ('V',  7, struct v4l2_mpeg_compression)
 1065 #define VIDIOC_REQBUFS          _IOWR ('V',  8, struct v4l2_requestbuffers)
 1066 #define VIDIOC_QUERYBUF         _IOWR ('V',  9, struct v4l2_buffer)
 1067 #define VIDIOC_G_FBUF           _IOR  ('V', 10, struct v4l2_framebuffer)
 1068 #define VIDIOC_S_FBUF           _IOW  ('V', 11, struct v4l2_framebuffer)
 1069 #define VIDIOC_OVERLAY          _IOW  ('V', 14, int)
 1070 #define VIDIOC_QBUF             _IOWR ('V', 15, struct v4l2_buffer)
 1071 #define VIDIOC_DQBUF            _IOWR ('V', 17, struct v4l2_buffer)
 1072 #define VIDIOC_STREAMON         _IOW  ('V', 18, int)
 1073 #define VIDIOC_STREAMOFF        _IOW  ('V', 19, int)
 1074 #define VIDIOC_G_PARM           _IOWR ('V', 21, struct v4l2_streamparm)
 1075 #define VIDIOC_S_PARM           _IOWR ('V', 22, struct v4l2_streamparm)
 1076 #define VIDIOC_G_STD            _IOR  ('V', 23, v4l2_std_id)
 1077 #define VIDIOC_S_STD            _IOW  ('V', 24, v4l2_std_id)
 1078 #define VIDIOC_ENUMSTD          _IOWR ('V', 25, struct v4l2_standard)
 1079 #define VIDIOC_ENUMINPUT        _IOWR ('V', 26, struct v4l2_input)
 1080 #define VIDIOC_G_CTRL           _IOWR ('V', 27, struct v4l2_control)
 1081 #define VIDIOC_S_CTRL           _IOWR ('V', 28, struct v4l2_control)
 1082 #define VIDIOC_G_TUNER          _IOWR ('V', 29, struct v4l2_tuner)
 1083 #define VIDIOC_S_TUNER          _IOW  ('V', 30, struct v4l2_tuner)
 1084 #define VIDIOC_G_AUDIO          _IOR  ('V', 33, struct v4l2_audio)
 1085 #define VIDIOC_S_AUDIO          _IOW  ('V', 34, struct v4l2_audio)
 1086 #define VIDIOC_QUERYCTRL        _IOWR ('V', 36, struct v4l2_queryctrl)
 1087 #define VIDIOC_QUERYMENU        _IOWR ('V', 37, struct v4l2_querymenu)
 1088 #define VIDIOC_G_INPUT          _IOR  ('V', 38, int)
 1089 #define VIDIOC_S_INPUT          _IOWR ('V', 39, int)
 1090 #define VIDIOC_G_OUTPUT         _IOR  ('V', 46, int)
 1091 #define VIDIOC_S_OUTPUT         _IOWR ('V', 47, int)
 1092 #define VIDIOC_ENUMOUTPUT       _IOWR ('V', 48, struct v4l2_output)
 1093 #define VIDIOC_G_AUDOUT         _IOR  ('V', 49, struct v4l2_audioout)
 1094 #define VIDIOC_S_AUDOUT         _IOW  ('V', 50, struct v4l2_audioout)
 1095 #define VIDIOC_G_MODULATOR      _IOWR ('V', 54, struct v4l2_modulator)
 1096 #define VIDIOC_S_MODULATOR      _IOW  ('V', 55, struct v4l2_modulator)
 1097 #define VIDIOC_G_FREQUENCY      _IOWR ('V', 56, struct v4l2_frequency)
 1098 #define VIDIOC_S_FREQUENCY      _IOW  ('V', 57, struct v4l2_frequency)
 1099 #define VIDIOC_CROPCAP          _IOWR ('V', 58, struct v4l2_cropcap)
 1100 #define VIDIOC_G_CROP           _IOWR ('V', 59, struct v4l2_crop)
 1101 #define VIDIOC_S_CROP           _IOW  ('V', 60, struct v4l2_crop)
 1102 #define VIDIOC_G_JPEGCOMP       _IOR  ('V', 61, struct v4l2_jpegcompression)
 1103 #define VIDIOC_S_JPEGCOMP       _IOW  ('V', 62, struct v4l2_jpegcompression)
 1104 #define VIDIOC_QUERYSTD         _IOR  ('V', 63, v4l2_std_id)
 1105 #define VIDIOC_TRY_FMT          _IOWR ('V', 64, struct v4l2_format)
 1106 #define VIDIOC_ENUMAUDIO        _IOWR ('V', 65, struct v4l2_audio)
 1107 #define VIDIOC_ENUMAUDOUT       _IOWR ('V', 66, struct v4l2_audioout)
 1108 #define VIDIOC_G_PRIORITY       _IOR  ('V', 67, enum v4l2_priority)
 1109 #define VIDIOC_S_PRIORITY       _IOW  ('V', 68, enum v4l2_priority)
 1110 #if 1
 1111 #define VIDIOC_G_SLICED_VBI_CAP _IOR  ('V', 69, struct v4l2_sliced_vbi_cap)
 1112 #endif
 1113 #define VIDIOC_LOG_STATUS       _IO   ('V', 70)
 1114 
 1115 /* for compatibility, will go away some day */
 1116 #define VIDIOC_OVERLAY_OLD      _IOWR ('V', 14, int)
 1117 #define VIDIOC_S_PARM_OLD       _IOW  ('V', 22, struct v4l2_streamparm)
 1118 #define VIDIOC_S_CTRL_OLD       _IOW  ('V', 28, struct v4l2_control)
 1119 #define VIDIOC_G_AUDIO_OLD      _IOWR ('V', 33, struct v4l2_audio)
 1120 #define VIDIOC_G_AUDOUT_OLD     _IOWR ('V', 49, struct v4l2_audioout)
 1121 #define VIDIOC_CROPCAP_OLD      _IOR  ('V', 58, struct v4l2_cropcap)
 1122 
 1123 #define BASE_VIDIOC_PRIVATE     192             /* 192-255 are private */
 1124 
 1125 
 1126 #ifdef __KERNEL__
 1127 /*
 1128  *
 1129  *      V 4 L 2   D R I V E R   H E L P E R   A P I
 1130  *
 1131  *      Some commonly needed functions for drivers (v4l2-common.o module)
 1132  */
 1133 #include <linux/fs.h>
 1134 
 1135 /*  Video standard functions  */
 1136 extern unsigned int v4l2_video_std_fps(struct v4l2_standard *vs);
 1137 extern int v4l2_video_std_construct(struct v4l2_standard *vs,
 1138                                     int id, char *name);
 1139 
 1140 /* prority handling */
 1141 struct v4l2_prio_state {
 1142         atomic_t prios[4];
 1143 };
 1144 int v4l2_prio_init(struct v4l2_prio_state *global);
 1145 int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
 1146                      enum v4l2_priority new);
 1147 int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local);
 1148 int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local);
 1149 enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global);
 1150 int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local);
 1151 
 1152 /* names for fancy debug output */
 1153 extern char *v4l2_field_names[];
 1154 extern char *v4l2_type_names[];
 1155 
 1156 /*  Compatibility layer interface  --  v4l1-compat module */
 1157 typedef int (*v4l2_kioctl)(struct inode *inode, struct file *file,
 1158                            unsigned int cmd, void *arg);
 1159 
 1160 #ifdef CONFIG_VIDEO_V4L1_COMPAT
 1161 int v4l_compat_translate_ioctl(struct inode *inode, struct file *file,
 1162                                int cmd, void *arg, v4l2_kioctl driver_ioctl);
 1163 #else
 1164 #define v4l_compat_translate_ioctl(inode,file,cmd,arg,ioctl) -EINVAL
 1165 #endif
 1166 
 1167 /* 32 Bits compatibility layer for 64 bits processors */
 1168 extern long v4l_compat_ioctl32(struct file *file, unsigned int cmd,
 1169                                 unsigned long arg);
 1170 
 1171 
 1172 #endif /* __KERNEL__ */
 1173 #endif /* __LINUX_VIDEODEV2_H */
 1174 
 1175 /*
 1176  * Local variables:
 1177  * c-basic-offset: 8
 1178  * End:
 1179  */

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