    /*
     *  Video for Linux Two header file
     *
     *  Copyright (C) 1999-2007 the contributors
     *
     *  This program is free software; you can redistribute it and/or modify
     *  it under the terms of the GNU General Public License as published by
     *  the Free Software Foundation; either version 2 of the License, or
     *  (at your option) any later version.
     *
     *  This program is distributed in the hope that it will be useful,
     *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     *  GNU General Public License for more details.
     *
     *  Alternatively you can redistribute this file under the terms of the
     *  BSD license as stated below:
     *
     *  Redistribution and use in source and binary forms, with or without
     *  modification, are permitted provided that the following conditions
     *  are met:
     *  1. Redistributions of source code must retain the above copyright
     *     notice, this list of conditions and the following disclaimer.
     *  2. Redistributions in binary form must reproduce the above copyright
     *     notice, this list of conditions and the following disclaimer in
     *     the documentation and/or other materials provided with the
     *     distribution.
     *  3. The names of its contributors may not be used to endorse or promote
     *     products derived from this software without specific prior written
     *     permission.
     *
     *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
     *  TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     *  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     *      Header file for v4l or V4L2 drivers and applications
     * with public API.
     * All kernel-specific stuff were moved to media/v4l2-dev.h, so
     * no #if __KERNEL tests are allowed here
     *
     *      See http://linuxtv.org for more info
     *
     *      Author: Bill Dirks <bill@thedirks.org>
     *              Justin Schoeman
     *              Hans Verkuil <hverkuil@xs4all.nl>
     *              et al.
     */
    #ifndef __LINUX_VIDEODEV2_H
    #define __LINUX_VIDEODEV2_H

    #ifdef __KERNEL__
    #include <linux/time.h>     /* need struct timeval */
    #else
    #include <sys/time.h>
    #endif
    #include <linux/compiler.h>
    #include <linux/ioctl.h>
    #include <linux/types.h>

    /*
     * Common stuff for both V4L1 and V4L2
     * Moved from videodev.h
     */
    #define VIDEO_MAX_FRAME               32
    #define VIDEO_MAX_PLANES               8

    #ifndef __KERNEL__

    /* These defines are V4L1 specific and should not be used with the V4L2 API!
       They will be removed from this header in the future. */

    #define VID_TYPE_CAPTURE        1       /* Can capture */
    #define VID_TYPE_TUNER          2       /* Can tune */
    #define VID_TYPE_TELETEXT       4       /* Does teletext */
    #define VID_TYPE_OVERLAY        8       /* Overlay onto frame buffer */
    #define VID_TYPE_CHROMAKEY      16      /* Overlay by chromakey */
    #define VID_TYPE_CLIPPING       32      /* Can clip */
    #define VID_TYPE_FRAMERAM       64      /* Uses the frame buffer memory */
    #define VID_TYPE_SCALES         128     /* Scalable */
    #define VID_TYPE_MONOCHROME     256     /* Monochrome only */
    #define VID_TYPE_SUBCAPTURE     512     /* Can capture subareas of the image */
    #define VID_TYPE_MPEG_DECODER   1024    /* Can decode MPEG streams */
    #define VID_TYPE_MPEG_ENCODER   2048    /* Can encode MPEG streams */
    #define VID_TYPE_MJPEG_DECODER  4096    /* Can decode MJPEG streams */
    #define VID_TYPE_MJPEG_ENCODER  8192    /* Can encode MJPEG streams */
    #endif

    /*
     *      M I S C E L L A N E O U S
     */

    /*  Four-character-code (FOURCC) */
    #define v4l2_fourcc(a, b, c, d)\
            ((__u32)(a) | ((__u32)(b) << 8) | ((__u32)(c) << 16) | ((__u32)(d) << 24))

    /*
     *      E N U M S
     */
    enum v4l2_field {
            V4L2_FIELD_ANY           = 0, /* driver can choose from none,
                                             top, bottom, interlaced
                                             depending on whatever it thinks
                                             is approximate ... */
            V4L2_FIELD_NONE          = 1, /* this device has no fields ... */
            V4L2_FIELD_TOP           = 2, /* top field only */
            V4L2_FIELD_BOTTOM        = 3, /* bottom field only */
            V4L2_FIELD_INTERLACED    = 4, /* both fields interlaced */
            V4L2_FIELD_SEQ_TB        = 5, /* both fields sequential into one
                                             buffer, top-bottom order */
            V4L2_FIELD_SEQ_BT        = 6, /* same as above + bottom-top order */
            V4L2_FIELD_ALTERNATE     = 7, /* both fields alternating into
                                             separate buffers */
            V4L2_FIELD_INTERLACED_TB = 8, /* both fields interlaced, top field
                                             first and the top field is
                                             transmitted first */
            V4L2_FIELD_INTERLACED_BT = 9, /* both fields interlaced, top field
                                             first and the bottom field is
                                             transmitted first */
    };
    #define V4L2_FIELD_HAS_TOP(field)       \
            ((field) == V4L2_FIELD_TOP      ||\
             (field) == V4L2_FIELD_INTERLACED ||\
             (field) == V4L2_FIELD_INTERLACED_TB ||\
             (field) == V4L2_FIELD_INTERLACED_BT ||\
             (field) == V4L2_FIELD_SEQ_TB   ||\
             (field) == V4L2_FIELD_SEQ_BT)
    #define V4L2_FIELD_HAS_BOTTOM(field)    \
            ((field) == V4L2_FIELD_BOTTOM   ||\
             (field) == V4L2_FIELD_INTERLACED ||\
             (field) == V4L2_FIELD_INTERLACED_TB ||\
             (field) == V4L2_FIELD_INTERLACED_BT ||\
             (field) == V4L2_FIELD_SEQ_TB   ||\
             (field) == V4L2_FIELD_SEQ_BT)
    #define V4L2_FIELD_HAS_BOTH(field)      \
            ((field) == V4L2_FIELD_INTERLACED ||\
             (field) == V4L2_FIELD_INTERLACED_TB ||\
             (field) == V4L2_FIELD_INTERLACED_BT ||\
             (field) == V4L2_FIELD_SEQ_TB ||\
             (field) == V4L2_FIELD_SEQ_BT)

    enum v4l2_buf_type {
            V4L2_BUF_TYPE_VIDEO_CAPTURE        = 1,
            V4L2_BUF_TYPE_VIDEO_OUTPUT         = 2,
            V4L2_BUF_TYPE_VIDEO_OVERLAY        = 3,
            V4L2_BUF_TYPE_VBI_CAPTURE          = 4,
            V4L2_BUF_TYPE_VBI_OUTPUT           = 5,
            V4L2_BUF_TYPE_SLICED_VBI_CAPTURE   = 6,
            V4L2_BUF_TYPE_SLICED_VBI_OUTPUT    = 7,
    #if 1
            /* Experimental */
            V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY = 8,
    #endif
            V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE = 9,
            V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE  = 10,
            V4L2_BUF_TYPE_PRIVATE              = 0x80,
    };

    #define V4L2_TYPE_IS_MULTIPLANAR(type)                  \
            ((type) == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE   \
             || (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)

    #define V4L2_TYPE_IS_OUTPUT(type)                               \
            ((type) == V4L2_BUF_TYPE_VIDEO_OUTPUT                   \
             || (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE         \
             || (type) == V4L2_BUF_TYPE_VIDEO_OVERLAY               \
             || (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY        \
             || (type) == V4L2_BUF_TYPE_VBI_OUTPUT                  \
             || (type) == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT)

    enum v4l2_tuner_type {
            V4L2_TUNER_RADIO             = 1,
            V4L2_TUNER_ANALOG_TV         = 2,
            V4L2_TUNER_DIGITAL_TV        = 3,
    };

    enum v4l2_memory {
            V4L2_MEMORY_MMAP             = 1,
            V4L2_MEMORY_USERPTR          = 2,
            V4L2_MEMORY_OVERLAY          = 3,
    };

    /* see also http://vektor.theorem.ca/graphics/ycbcr/ */
    enum v4l2_colorspace {
            /* ITU-R 601 -- broadcast NTSC/PAL */
            V4L2_COLORSPACE_SMPTE170M     = 1,

            /* 1125-Line (US) HDTV */
            V4L2_COLORSPACE_SMPTE240M     = 2,

            /* HD and modern captures. */
            V4L2_COLORSPACE_REC709        = 3,

            /* broken BT878 extents (601, luma range 16-253 instead of 16-235) */
            V4L2_COLORSPACE_BT878         = 4,

            /* These should be useful.  Assume 601 extents. */
            V4L2_COLORSPACE_470_SYSTEM_M  = 5,
            V4L2_COLORSPACE_470_SYSTEM_BG = 6,

            /* I know there will be cameras that send this.  So, this is
             * unspecified chromaticities and full 0-255 on each of the
             * Y'CbCr components
             */
            V4L2_COLORSPACE_JPEG          = 7,

            /* For RGB colourspaces, this is probably a good start. */
            V4L2_COLORSPACE_SRGB          = 8,
    };

    enum v4l2_priority {
            V4L2_PRIORITY_UNSET       = 0,  /* not initialized */
            V4L2_PRIORITY_BACKGROUND  = 1,
            V4L2_PRIORITY_INTERACTIVE = 2,
            V4L2_PRIORITY_RECORD      = 3,
            V4L2_PRIORITY_DEFAULT     = V4L2_PRIORITY_INTERACTIVE,
    };

    struct v4l2_rect {
            __s32   left;
            __s32   top;
            __s32   width;
            __s32   height;
    };

    struct v4l2_fract {
            __u32   numerator;
            __u32   denominator;
    };

    /*
     *      D R I V E R   C A P A B I L I T I E S
     */
    struct v4l2_capability {
            __u8    driver[16];     /* i.e.ie; "bttv" */
            __u8    card[32];       /* i.e.ie; "Hauppauge WinTV" */
            __u8    bus_info[32];   /* "PCI:" + pci_name(pci_dev) */
            __u32   version;        /* should use KERNEL_VERSION() */
            __u32   capabilities;   /* Device capabilities */
            __u32   reserved[4];
    };

    /* Values for 'capabilities' field */
    #define V4L2_CAP_VIDEO_CAPTURE          0x00000001  /* Is a video capture device */
    #define V4L2_CAP_VIDEO_OUTPUT           0x00000002  /* Is a video output device */
    #define V4L2_CAP_VIDEO_OVERLAY          0x00000004  /* Can do video overlay */
    #define V4L2_CAP_VBI_CAPTURE            0x00000010  /* Is a raw VBI capture device */
    #define V4L2_CAP_VBI_OUTPUT             0x00000020  /* Is a raw VBI output device */
    #define V4L2_CAP_SLICED_VBI_CAPTURE     0x00000040  /* Is a sliced VBI capture device */
    #define V4L2_CAP_SLICED_VBI_OUTPUT      0x00000080  /* Is a sliced VBI output device */
    #define V4L2_CAP_RDS_CAPTURE            0x00000100  /* RDS data capture */
    #define V4L2_CAP_VIDEO_OUTPUT_OVERLAY   0x00000200  /* Can do video output overlay */
    #define V4L2_CAP_HW_FREQ_SEEK           0x00000400  /* Can do hardware frequency seek  */
    #define V4L2_CAP_RDS_OUTPUT             0x00000800  /* Is an RDS encoder */

    /* Is a video capture device that supports multiplanar formats */
    #define V4L2_CAP_VIDEO_CAPTURE_MPLANE   0x00001000
    /* Is a video output device that supports multiplanar formats */
    #define V4L2_CAP_VIDEO_OUTPUT_MPLANE    0x00002000

    #define V4L2_CAP_TUNER                  0x00010000  /* has a tuner */
    #define V4L2_CAP_AUDIO                  0x00020000  /* has audio support */
    #define V4L2_CAP_RADIO                  0x00040000  /* is a radio device */
    #define V4L2_CAP_MODULATOR              0x00080000  /* has a modulator */

    #define V4L2_CAP_READWRITE              0x01000000  /* read/write systemcalls */
    #define V4L2_CAP_ASYNCIO                0x02000000  /* async I/O */
    #define V4L2_CAP_STREAMING              0x04000000  /* streaming I/O ioctls */

    /*
     *      V I D E O   I M A G E   F O R M A T
     */
    struct v4l2_pix_format {
            __u32                   width;
            __u32                   height;
            __u32                   pixelformat;
            enum v4l2_field         field;
            __u32                   bytesperline;   /* for padding, zero if unused */
            __u32                   sizeimage;
            enum v4l2_colorspace    colorspace;
            __u32                   priv;           /* private data, depends on pixelformat */
    };

    /*      Pixel format         FOURCC                          depth  Description  */

    /* RGB formats */
    #define V4L2_PIX_FMT_RGB332  v4l2_fourcc('R', 'G', 'B', '1') /*  8  RGB-3-3-2     */
    #define V4L2_PIX_FMT_RGB444  v4l2_fourcc('R', '4', '4', '4') /* 16  xxxxrrrr ggggbbbb */
    #define V4L2_PIX_FMT_RGB555  v4l2_fourcc('R', 'G', 'B', 'O') /* 16  RGB-5-5-5     */
    #define V4L2_PIX_FMT_RGB565  v4l2_fourcc('R', 'G', 'B', 'P') /* 16  RGB-5-6-5     */
    #define V4L2_PIX_FMT_RGB555X v4l2_fourcc('R', 'G', 'B', 'Q') /* 16  RGB-5-5-5 BE  */
    #define V4L2_PIX_FMT_RGB565X v4l2_fourcc('R', 'G', 'B', 'R') /* 16  RGB-5-6-5 BE  */
    #define V4L2_PIX_FMT_BGR666  v4l2_fourcc('B', 'G', 'R', 'H') /* 18  BGR-6-6-6     */
    #define V4L2_PIX_FMT_BGR24   v4l2_fourcc('B', 'G', 'R', '3') /* 24  BGR-8-8-8     */
    #define V4L2_PIX_FMT_RGB24   v4l2_fourcc('R', 'G', 'B', '3') /* 24  RGB-8-8-8     */
    #define V4L2_PIX_FMT_BGR32   v4l2_fourcc('B', 'G', 'R', '4') /* 32  BGR-8-8-8-8   */
    #define V4L2_PIX_FMT_RGB32   v4l2_fourcc('R', 'G', 'B', '4') /* 32  RGB-8-8-8-8   */

    /* Grey formats */
    #define V4L2_PIX_FMT_GREY    v4l2_fourcc('G', 'R', 'E', 'Y') /*  8  Greyscale     */
    #define V4L2_PIX_FMT_Y4      v4l2_fourcc('Y', '0', '4', ' ') /*  4  Greyscale     */
    #define V4L2_PIX_FMT_Y6      v4l2_fourcc('Y', '0', '6', ' ') /*  6  Greyscale     */
    #define V4L2_PIX_FMT_Y10     v4l2_fourcc('Y', '1', '0', ' ') /* 10  Greyscale     */
    #define V4L2_PIX_FMT_Y16     v4l2_fourcc('Y', '1', '6', ' ') /* 16  Greyscale     */

    /* Grey bit-packed formats */
    #define V4L2_PIX_FMT_Y10BPACK    v4l2_fourcc('Y', '1', '0', 'B') /* 10  Greyscale bit-packed */

    /* Palette formats */
    #define V4L2_PIX_FMT_PAL8    v4l2_fourcc('P', 'A', 'L', '8') /*  8  8-bit palette */

    /* Luminance+Chrominance formats */
    #define V4L2_PIX_FMT_YVU410  v4l2_fourcc('Y', 'V', 'U', '9') /*  9  YVU 4:1:0     */
    #define V4L2_PIX_FMT_YVU420  v4l2_fourcc('Y', 'V', '1', '2') /* 12  YVU 4:2:0     */
    #define V4L2_PIX_FMT_YUYV    v4l2_fourcc('Y', 'U', 'Y', 'V') /* 16  YUV 4:2:2     */
    #define V4L2_PIX_FMT_YYUV    v4l2_fourcc('Y', 'Y', 'U', 'V') /* 16  YUV 4:2:2     */
    #define V4L2_PIX_FMT_YVYU    v4l2_fourcc('Y', 'V', 'Y', 'U') /* 16 YVU 4:2:2 */
    #define V4L2_PIX_FMT_UYVY    v4l2_fourcc('U', 'Y', 'V', 'Y') /* 16  YUV 4:2:2     */
    #define V4L2_PIX_FMT_VYUY    v4l2_fourcc('V', 'Y', 'U', 'Y') /* 16  YUV 4:2:2     */
    #define V4L2_PIX_FMT_YUV422P v4l2_fourcc('4', '2', '2', 'P') /* 16  YVU422 planar */
    #define V4L2_PIX_FMT_YUV411P v4l2_fourcc('4', '1', '1', 'P') /* 16  YVU411 planar */
    #define V4L2_PIX_FMT_Y41P    v4l2_fourcc('Y', '4', '1', 'P') /* 12  YUV 4:1:1     */
    #define V4L2_PIX_FMT_YUV444  v4l2_fourcc('Y', '4', '4', '4') /* 16  xxxxyyyy uuuuvvvv */
    #define V4L2_PIX_FMT_YUV555  v4l2_fourcc('Y', 'U', 'V', 'O') /* 16  YUV-5-5-5     */
    #define V4L2_PIX_FMT_YUV565  v4l2_fourcc('Y', 'U', 'V', 'P') /* 16  YUV-5-6-5     */
    #define V4L2_PIX_FMT_YUV32   v4l2_fourcc('Y', 'U', 'V', '4') /* 32  YUV-8-8-8-8   */
    #define V4L2_PIX_FMT_YUV410  v4l2_fourcc('Y', 'U', 'V', '9') /*  9  YUV 4:1:0     */
    #define V4L2_PIX_FMT_YUV420  v4l2_fourcc('Y', 'U', '1', '2') /* 12  YUV 4:2:0     */
    #define V4L2_PIX_FMT_HI240   v4l2_fourcc('H', 'I', '2', '4') /*  8  8-bit color   */
    #define V4L2_PIX_FMT_HM12    v4l2_fourcc('H', 'M', '1', '2') /*  8  YUV 4:2:0 16x16 macroblocks */
    #define V4L2_PIX_FMT_M420    v4l2_fourcc('M', '4', '2', '0') /* 12  YUV 4:2:0 2 lines y, 1 line uv interleaved */

    /* two planes -- one Y, one Cr + Cb interleaved  */
    #define V4L2_PIX_FMT_NV12    v4l2_fourcc('N', 'V', '1', '2') /* 12  Y/CbCr 4:2:0  */
    #define V4L2_PIX_FMT_NV21    v4l2_fourcc('N', 'V', '2', '1') /* 12  Y/CrCb 4:2:0  */
    #define V4L2_PIX_FMT_NV16    v4l2_fourcc('N', 'V', '1', '6') /* 16  Y/CbCr 4:2:2  */
    #define V4L2_PIX_FMT_NV61    v4l2_fourcc('N', 'V', '6', '1') /* 16  Y/CrCb 4:2:2  */

    /* two non contiguous planes - one Y, one Cr + Cb interleaved  */
    #define V4L2_PIX_FMT_NV12M   v4l2_fourcc('N', 'M', '1', '2') /* 12  Y/CbCr 4:2:0  */
    #define V4L2_PIX_FMT_NV12MT  v4l2_fourcc('T', 'M', '1', '2') /* 12  Y/CbCr 4:2:0 64x32 macroblocks */

    /* three non contiguous planes - Y, Cb, Cr */
    #define V4L2_PIX_FMT_YUV420M v4l2_fourcc('Y', 'M', '1', '2') /* 12  YUV420 planar */

    /* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */
    #define V4L2_PIX_FMT_SBGGR8  v4l2_fourcc('B', 'A', '8', '1') /*  8  BGBG.. GRGR.. */
    #define V4L2_PIX_FMT_SGBRG8  v4l2_fourcc('G', 'B', 'R', 'G') /*  8  GBGB.. RGRG.. */
    #define V4L2_PIX_FMT_SGRBG8  v4l2_fourcc('G', 'R', 'B', 'G') /*  8  GRGR.. BGBG.. */
    #define V4L2_PIX_FMT_SRGGB8  v4l2_fourcc('R', 'G', 'G', 'B') /*  8  RGRG.. GBGB.. */
    #define V4L2_PIX_FMT_SBGGR10 v4l2_fourcc('B', 'G', '1', '0') /* 10  BGBG.. GRGR.. */
    #define V4L2_PIX_FMT_SGBRG10 v4l2_fourcc('G', 'B', '1', '0') /* 10  GBGB.. RGRG.. */
    #define V4L2_PIX_FMT_SGRBG10 v4l2_fourcc('B', 'A', '1', '0') /* 10  GRGR.. BGBG.. */
    #define V4L2_PIX_FMT_SRGGB10 v4l2_fourcc('R', 'G', '1', '0') /* 10  RGRG.. GBGB.. */
            /* 10bit raw bayer DPCM compressed to 8 bits */
    #define V4L2_PIX_FMT_SGRBG10DPCM8 v4l2_fourcc('B', 'D', '1', '0')
            /*
             * 10bit raw bayer, expanded to 16 bits
             * xxxxrrrrrrrrrrxxxxgggggggggg xxxxggggggggggxxxxbbbbbbbbbb...
             */
    #define V4L2_PIX_FMT_SBGGR16 v4l2_fourcc('B', 'Y', 'R', '2') /* 16  BGBG.. GRGR.. */

    /* compressed formats */
    #define V4L2_PIX_FMT_MJPEG    v4l2_fourcc('M', 'J', 'P', 'G') /* Motion-JPEG   */
    #define V4L2_PIX_FMT_JPEG     v4l2_fourcc('J', 'P', 'E', 'G') /* JFIF JPEG     */
    #define V4L2_PIX_FMT_DV       v4l2_fourcc('d', 'v', 's', 'd') /* 1394          */
    #define V4L2_PIX_FMT_MPEG     v4l2_fourcc('M', 'P', 'E', 'G') /* MPEG-1/2/4    */

    /*  Vendor-specific formats   */
    #define V4L2_PIX_FMT_CPIA1    v4l2_fourcc('C', 'P', 'I', 'A') /* cpia1 YUV */
    #define V4L2_PIX_FMT_WNVA     v4l2_fourcc('W', 'N', 'V', 'A') /* Winnov hw compress */
    #define V4L2_PIX_FMT_SN9C10X  v4l2_fourcc('S', '9', '1', '0') /* SN9C10x compression */
    #define V4L2_PIX_FMT_SN9C20X_I420 v4l2_fourcc('S', '9', '2', '0') /* SN9C20x YUV 4:2:0 */
    #define V4L2_PIX_FMT_PWC1     v4l2_fourcc('P', 'W', 'C', '1') /* pwc older webcam */
    #define V4L2_PIX_FMT_PWC2     v4l2_fourcc('P', 'W', 'C', '2') /* pwc newer webcam */
    #define V4L2_PIX_FMT_ET61X251 v4l2_fourcc('E', '6', '2', '5') /* ET61X251 compression */
    #define V4L2_PIX_FMT_SPCA501  v4l2_fourcc('S', '5', '0', '1') /* YUYV per line */
    #define V4L2_PIX_FMT_SPCA505  v4l2_fourcc('S', '5', '0', '5') /* YYUV per line */
    #define V4L2_PIX_FMT_SPCA508  v4l2_fourcc('S', '5', '0', '8') /* YUVY per line */
    #define V4L2_PIX_FMT_SPCA561  v4l2_fourcc('S', '5', '6', '1') /* compressed GBRG bayer */
    #define V4L2_PIX_FMT_PAC207   v4l2_fourcc('P', '2', '0', '7') /* compressed BGGR bayer */
    #define V4L2_PIX_FMT_MR97310A v4l2_fourcc('M', '3', '1', '0') /* compressed BGGR bayer */
    #define V4L2_PIX_FMT_SN9C2028 v4l2_fourcc('S', 'O', 'N', 'X') /* compressed GBRG bayer */
    #define V4L2_PIX_FMT_SQ905C   v4l2_fourcc('9', '0', '5', 'C') /* compressed RGGB bayer */
    #define V4L2_PIX_FMT_PJPG     v4l2_fourcc('P', 'J', 'P', 'G') /* Pixart 73xx JPEG */
    #define V4L2_PIX_FMT_OV511    v4l2_fourcc('O', '5', '1', '1') /* ov511 JPEG */
    #define V4L2_PIX_FMT_OV518    v4l2_fourcc('O', '5', '1', '8') /* ov518 JPEG */
    #define V4L2_PIX_FMT_STV0680  v4l2_fourcc('S', '6', '8', '0') /* stv0680 bayer */
    #define V4L2_PIX_FMT_TM6000   v4l2_fourcc('T', 'M', '6', '0') /* tm5600/tm60x0 */
    #define V4L2_PIX_FMT_CIT_YYVYUY v4l2_fourcc('C', 'I', 'T', 'V') /* one line of Y then 1 line of VYUY */
    #define V4L2_PIX_FMT_KONICA420  v4l2_fourcc('K', 'O', 'N', 'I') /* YUV420 planar in blocks of 256 pixels */

    /*
     *      F O R M A T   E N U M E R A T I O N
     */
    struct v4l2_fmtdesc {
            __u32               index;             /* Format number      */
            enum v4l2_buf_type  type;              /* buffer type        */
            __u32               flags;
            __u8                description[32];   /* Description string */
            __u32               pixelformat;       /* Format fourcc      */
            __u32               reserved[4];
    };

    #define V4L2_FMT_FLAG_COMPRESSED 0x0001
    #define V4L2_FMT_FLAG_EMULATED   0x0002

    #if 1
            /* Experimental Frame Size and frame rate enumeration */
    /*
     *      F R A M E   S I Z E   E N U M E R A T I O N
     */
    enum v4l2_frmsizetypes {
            V4L2_FRMSIZE_TYPE_DISCRETE      = 1,
            V4L2_FRMSIZE_TYPE_CONTINUOUS    = 2,
            V4L2_FRMSIZE_TYPE_STEPWISE      = 3,
    };

    struct v4l2_frmsize_discrete {
            __u32                   width;          /* Frame width [pixel] */
            __u32                   height;         /* Frame height [pixel] */
    };

    struct v4l2_frmsize_stepwise {
            __u32                   min_width;      /* Minimum frame width [pixel] */
            __u32                   max_width;      /* Maximum frame width [pixel] */
            __u32                   step_width;     /* Frame width step size [pixel] */
            __u32                   min_height;     /* Minimum frame height [pixel] */
            __u32                   max_height;     /* Maximum frame height [pixel] */
            __u32                   step_height;    /* Frame height step size [pixel] */
    };

    struct v4l2_frmsizeenum {
            __u32                   index;          /* Frame size number */
            __u32                   pixel_format;   /* Pixel format */
            __u32                   type;           /* Frame size type the device supports. */

            union {                                 /* Frame size */
                    struct v4l2_frmsize_discrete    discrete;
                    struct v4l2_frmsize_stepwise    stepwise;
            };

            __u32   reserved[2];                    /* Reserved space for future use */
    };

    /*
     *      F R A M E   R A T E   E N U M E R A T I O N
     */
    enum v4l2_frmivaltypes {
            V4L2_FRMIVAL_TYPE_DISCRETE      = 1,
            V4L2_FRMIVAL_TYPE_CONTINUOUS    = 2,
            V4L2_FRMIVAL_TYPE_STEPWISE      = 3,
    };

    struct v4l2_frmival_stepwise {
            struct v4l2_fract       min;            /* Minimum frame interval [s] */
            struct v4l2_fract       max;            /* Maximum frame interval [s] */
            struct v4l2_fract       step;           /* Frame interval step size [s] */
    };

    struct v4l2_frmivalenum {
            __u32                   index;          /* Frame format index */
            __u32                   pixel_format;   /* Pixel format */
            __u32                   width;          /* Frame width */
            __u32                   height;         /* Frame height */
            __u32                   type;           /* Frame interval type the device supports. */

            union {                                 /* Frame interval */
                    struct v4l2_fract               discrete;
                    struct v4l2_frmival_stepwise    stepwise;
            };

            __u32   reserved[2];                    /* Reserved space for future use */
    };
    #endif

    /*
     *      T I M E C O D E
     */
    struct v4l2_timecode {
            __u32   type;
            __u32   flags;
            __u8    frames;
            __u8    seconds;
            __u8    minutes;
            __u8    hours;
            __u8    userbits[4];
    };

    /*  Type  */
    #define V4L2_TC_TYPE_24FPS              1
    #define V4L2_TC_TYPE_25FPS              2
    #define V4L2_TC_TYPE_30FPS              3
    #define V4L2_TC_TYPE_50FPS              4
    #define V4L2_TC_TYPE_60FPS              5

    /*  Flags  */
    #define V4L2_TC_FLAG_DROPFRAME          0x0001 /* "drop-frame" mode */
    #define V4L2_TC_FLAG_COLORFRAME         0x0002
    #define V4L2_TC_USERBITS_field          0x000C
    #define V4L2_TC_USERBITS_USERDEFINED    0x0000
    #define V4L2_TC_USERBITS_8BITCHARS      0x0008
    /* The above is based on SMPTE timecodes */

    struct v4l2_jpegcompression {
            int quality;

            int  APPn;              /* Number of APP segment to be written,
                                     * must be 0..15 */
            int  APP_len;           /* Length of data in JPEG APPn segment */
            char APP_data[60];      /* Data in the JPEG APPn segment. */

            int  COM_len;           /* Length of data in JPEG COM segment */
            char COM_data[60];      /* Data in JPEG COM segment */

            __u32 jpeg_markers;     /* Which markers should go into the JPEG
                                     * output. Unless you exactly know what
                                     * you do, leave them untouched.
                                     * Inluding less markers will make the
                                     * resulting code smaller, but there will
                                     * be fewer applications which can read it.
                                     * The presence of the APP and COM marker
                                     * is influenced by APP_len and COM_len
                                     * ONLY, not by this property! */

    #define V4L2_JPEG_MARKER_DHT (1<<3)    /* Define Huffman Tables */
    #define V4L2_JPEG_MARKER_DQT (1<<4)    /* Define Quantization Tables */
    #define V4L2_JPEG_MARKER_DRI (1<<5)    /* Define Restart Interval */
    #define V4L2_JPEG_MARKER_COM (1<<6)    /* Comment segment */
    #define V4L2_JPEG_MARKER_APP (1<<7)    /* App segment, driver will
                                            * allways use APP0 */
    };

    /*
     *      M E M O R Y - M A P P I N G   B U F F E R S
     */
    struct v4l2_requestbuffers {
            __u32                   count;
            enum v4l2_buf_type      type;
            enum v4l2_memory        memory;
            __u32                   reserved[2];
    };

    /**
     * struct v4l2_plane - plane info for multi-planar buffers
     * @bytesused:          number of bytes occupied by data in the plane (payload)
     * @length:             size of this plane (NOT the payload) in bytes
     * @mem_offset:         when memory in the associated struct v4l2_buffer is
     *                      V4L2_MEMORY_MMAP, equals the offset from the start of
     *                      the device memory for this plane (or is a "cookie" that
     *                      should be passed to mmap() called on the video node)
     * @userptr:            when memory is V4L2_MEMORY_USERPTR, a userspace pointer
     *                      pointing to this plane
     * @data_offset:        offset in the plane to the start of data; usually 0,
     *                      unless there is a header in front of the data
     *
     * Multi-planar buffers consist of one or more planes, e.g. an YCbCr buffer
     * with two planes can have one plane for Y, and another for interleaved CbCr
     * components. Each plane can reside in a separate memory buffer, or even in
     * a completely separate memory node (e.g. in embedded devices).
     */
    struct v4l2_plane {
            __u32                   bytesused;
            __u32                   length;
            union {
                    __u32           mem_offset;
                    unsigned long   userptr;
            } m;
            __u32                   data_offset;
            __u32                   reserved[11];
    };

    /**
     * struct v4l2_buffer - video buffer info
     * @index:      id number of the buffer
     * @type:       buffer type (type == *_MPLANE for multiplanar buffers)
     * @bytesused:  number of bytes occupied by data in the buffer (payload);
     *              unused (set to 0) for multiplanar buffers
     * @flags:      buffer informational flags
     * @field:      field order of the image in the buffer
     * @timestamp:  frame timestamp
     * @timecode:   frame timecode
     * @sequence:   sequence count of this frame
     * @memory:     the method, in which the actual video data is passed
     * @offset:     for non-multiplanar buffers with memory == V4L2_MEMORY_MMAP;
     *              offset from the start of the device memory for this plane,
     *              (or a "cookie" that should be passed to mmap() as offset)
     * @userptr:    for non-multiplanar buffers with memory == V4L2_MEMORY_USERPTR;
     *              a userspace pointer pointing to this buffer
     * @planes:     for multiplanar buffers; userspace pointer to the array of plane
     *              info structs for this buffer
     * @length:     size in bytes of the buffer (NOT its payload) for single-plane
     *              buffers (when type != *_MPLANE); number of elements in the
     *              planes array for multi-plane buffers
     * @input:      input number from which the video data has has been captured
     *
     * Contains data exchanged by application and driver using one of the Streaming
     * I/O methods.
     */
    struct v4l2_buffer {
            __u32                   index;
            enum v4l2_buf_type      type;
            __u32                   bytesused;
            __u32                   flags;
            enum v4l2_field         field;
            struct timeval          timestamp;
            struct v4l2_timecode    timecode;
            __u32                   sequence;

            /* memory location */
            enum v4l2_memory        memory;
            union {
                    __u32           offset;
                    unsigned long   userptr;
                    struct v4l2_plane *planes;
            } m;
            __u32                   length;
            __u32                   input;
            __u32                   reserved;
    };

    /*  Flags for 'flags' field */
    #define V4L2_BUF_FLAG_MAPPED    0x0001  /* Buffer is mapped (flag) */
    #define V4L2_BUF_FLAG_QUEUED    0x0002  /* Buffer is queued for processing */
    #define V4L2_BUF_FLAG_DONE      0x0004  /* Buffer is ready */
    #define V4L2_BUF_FLAG_KEYFRAME  0x0008  /* Image is a keyframe (I-frame) */
    #define V4L2_BUF_FLAG_PFRAME    0x0010  /* Image is a P-frame */
    #define V4L2_BUF_FLAG_BFRAME    0x0020  /* Image is a B-frame */
    /* Buffer is ready, but the data contained within is corrupted. */
    #define V4L2_BUF_FLAG_ERROR     0x0040
    #define V4L2_BUF_FLAG_TIMECODE  0x0100  /* timecode field is valid */
    #define V4L2_BUF_FLAG_INPUT     0x0200  /* input field is valid */

    /*
     *      O V E R L A Y   P R E V I E W
     */
    struct v4l2_framebuffer {
            __u32                   capability;
            __u32                   flags;
    /* FIXME: in theory we should pass something like PCI device + memory
     * region + offset instead of some physical address */
            void                    *base;
            struct v4l2_pix_format  fmt;
    };
    /*  Flags for the 'capability' field. Read only */
    #define V4L2_FBUF_CAP_EXTERNOVERLAY     0x0001
    #define V4L2_FBUF_CAP_CHROMAKEY         0x0002
    #define V4L2_FBUF_CAP_LIST_CLIPPING     0x0004
    #define V4L2_FBUF_CAP_BITMAP_CLIPPING   0x0008
    #define V4L2_FBUF_CAP_LOCAL_ALPHA       0x0010
    #define V4L2_FBUF_CAP_GLOBAL_ALPHA      0x0020
    #define V4L2_FBUF_CAP_LOCAL_INV_ALPHA   0x0040
    #define V4L2_FBUF_CAP_SRC_CHROMAKEY     0x0080
    /*  Flags for the 'flags' field. */
    #define V4L2_FBUF_FLAG_PRIMARY          0x0001
    #define V4L2_FBUF_FLAG_OVERLAY          0x0002
    #define V4L2_FBUF_FLAG_CHROMAKEY        0x0004
    #define V4L2_FBUF_FLAG_LOCAL_ALPHA      0x0008
    #define V4L2_FBUF_FLAG_GLOBAL_ALPHA     0x0010
    #define V4L2_FBUF_FLAG_LOCAL_INV_ALPHA  0x0020
    #define V4L2_FBUF_FLAG_SRC_CHROMAKEY    0x0040

    struct v4l2_clip {
            struct v4l2_rect        c;
            struct v4l2_clip        __user *next;
    };

    struct v4l2_window {
            struct v4l2_rect        w;
            enum v4l2_field         field;
            __u32                   chromakey;
            struct v4l2_clip        __user *clips;
            __u32                   clipcount;
            void                    __user *bitmap;
            __u8                    global_alpha;
    };

    /*
     *      C A P T U R E   P A R A M E T E R S
     */
    struct v4l2_captureparm {
            __u32              capability;    /*  Supported modes */
            __u32              capturemode;   /*  Current mode */
            struct v4l2_fract  timeperframe;  /*  Time per frame in .1us units */
            __u32              extendedmode;  /*  Driver-specific extensions */
            __u32              readbuffers;   /*  # of buffers for read */
            __u32              reserved[4];
    };

    /*  Flags for 'capability' and 'capturemode' fields */
    #define V4L2_MODE_HIGHQUALITY   0x0001  /*  High quality imaging mode */
    #define V4L2_CAP_TIMEPERFRAME   0x1000  /*  timeperframe field is supported */

    struct v4l2_outputparm {
            __u32              capability;   /*  Supported modes */
            __u32              outputmode;   /*  Current mode */
            struct v4l2_fract  timeperframe; /*  Time per frame in seconds */
            __u32              extendedmode; /*  Driver-specific extensions */
            __u32              writebuffers; /*  # of buffers for write */
            __u32              reserved[4];
    };

    /*
     *      I N P U T   I M A G E   C R O P P I N G
     */
    struct v4l2_cropcap {
            enum v4l2_buf_type      type;
            struct v4l2_rect        bounds;
            struct v4l2_rect        defrect;
            struct v4l2_fract       pixelaspect;
    };

    struct v4l2_crop {
            enum v4l2_buf_type      type;
            struct v4l2_rect        c;
    };

    /*
     *      A N A L O G   V I D E O   S T A N D A R D
     */

    typedef __u64 v4l2_std_id;

    /* one bit for each */
    #define V4L2_STD_PAL_B          ((v4l2_std_id)0x00000001)
    #define V4L2_STD_PAL_B1         ((v4l2_std_id)0x00000002)
    #define V4L2_STD_PAL_G          ((v4l2_std_id)0x00000004)
    #define V4L2_STD_PAL_H          ((v4l2_std_id)0x00000008)
    #define V4L2_STD_PAL_I          ((v4l2_std_id)0x00000010)
    #define V4L2_STD_PAL_D          ((v4l2_std_id)0x00000020)
    #define V4L2_STD_PAL_D1         ((v4l2_std_id)0x00000040)
    #define V4L2_STD_PAL_K          ((v4l2_std_id)0x00000080)

    #define V4L2_STD_PAL_M          ((v4l2_std_id)0x00000100)
    #define V4L2_STD_PAL_N          ((v4l2_std_id)0x00000200)
    #define V4L2_STD_PAL_Nc         ((v4l2_std_id)0x00000400)
    #define V4L2_STD_PAL_60         ((v4l2_std_id)0x00000800)

    #define V4L2_STD_NTSC_M         ((v4l2_std_id)0x00001000)
    #define V4L2_STD_NTSC_M_JP      ((v4l2_std_id)0x00002000)
    #define V4L2_STD_NTSC_443       ((v4l2_std_id)0x00004000)
    #define V4L2_STD_NTSC_M_KR      ((v4l2_std_id)0x00008000)

    #define V4L2_STD_SECAM_B        ((v4l2_std_id)0x00010000)
    #define V4L2_STD_SECAM_D        ((v4l2_std_id)0x00020000)
    #define V4L2_STD_SECAM_G        ((v4l2_std_id)0x00040000)
    #define V4L2_STD_SECAM_H        ((v4l2_std_id)0x00080000)
    #define V4L2_STD_SECAM_K        ((v4l2_std_id)0x00100000)
    #define V4L2_STD_SECAM_K1       ((v4l2_std_id)0x00200000)
    #define V4L2_STD_SECAM_L        ((v4l2_std_id)0x00400000)
    #define V4L2_STD_SECAM_LC       ((v4l2_std_id)0x00800000)

    /* ATSC/HDTV */
    #define V4L2_STD_ATSC_8_VSB     ((v4l2_std_id)0x01000000)
    #define V4L2_STD_ATSC_16_VSB    ((v4l2_std_id)0x02000000)

    /* FIXME:
       Although std_id is 64 bits, there is an issue on PPC32 architecture that
       makes switch(__u64) to break. So, there's a hack on v4l2-common.c rounding
       this value to 32 bits.
       As, currently, the max value is for V4L2_STD_ATSC_16_VSB (30 bits wide),
       it should work fine. However, if needed to add more than two standards,
       v4l2-common.c should be fixed.
     */

    /* some merged standards */
    #define V4L2_STD_MN     (V4L2_STD_PAL_M|V4L2_STD_PAL_N|V4L2_STD_PAL_Nc|V4L2_STD_NTSC)
    #define V4L2_STD_B      (V4L2_STD_PAL_B|V4L2_STD_PAL_B1|V4L2_STD_SECAM_B)
    #define V4L2_STD_GH     (V4L2_STD_PAL_G|V4L2_STD_PAL_H|V4L2_STD_SECAM_G|V4L2_STD_SECAM_H)
    #define V4L2_STD_DK     (V4L2_STD_PAL_DK|V4L2_STD_SECAM_DK)

    /* some common needed stuff */
    #define V4L2_STD_PAL_BG         (V4L2_STD_PAL_B         |\
                                     V4L2_STD_PAL_B1        |\
                                     V4L2_STD_PAL_G)
    #define V4L2_STD_PAL_DK         (V4L2_STD_PAL_D         |\
                                     V4L2_STD_PAL_D1        |\
                                     V4L2_STD_PAL_K)
    #define V4L2_STD_PAL            (V4L2_STD_PAL_BG        |\
                                     V4L2_STD_PAL_DK        |\
                                     V4L2_STD_PAL_H         |\
                                     V4L2_STD_PAL_I)
    #define V4L2_STD_NTSC           (V4L2_STD_NTSC_M        |\
                                     V4L2_STD_NTSC_M_JP     |\
                                     V4L2_STD_NTSC_M_KR)
    #define V4L2_STD_SECAM_DK       (V4L2_STD_SECAM_D       |\
                                     V4L2_STD_SECAM_K       |\
                                     V4L2_STD_SECAM_K1)
    #define V4L2_STD_SECAM          (V4L2_STD_SECAM_B       |\
                                     V4L2_STD_SECAM_G       |\
                                     V4L2_STD_SECAM_H       |\
                                     V4L2_STD_SECAM_DK      |\
                                     V4L2_STD_SECAM_L       |\
                                     V4L2_STD_SECAM_LC)

    #define V4L2_STD_525_60         (V4L2_STD_PAL_M         |\
                                     V4L2_STD_PAL_60        |\
                                     V4L2_STD_NTSC          |\
                                     V4L2_STD_NTSC_443)
    #define V4L2_STD_625_50         (V4L2_STD_PAL           |\
                                     V4L2_STD_PAL_N         |\
                                     V4L2_STD_PAL_Nc        |\
                                     V4L2_STD_SECAM)
    #define V4L2_STD_ATSC           (V4L2_STD_ATSC_8_VSB    |\
                                     V4L2_STD_ATSC_16_VSB)

    #define V4L2_STD_UNKNOWN        0
    #define V4L2_STD_ALL            (V4L2_STD_525_60        |\
                                     V4L2_STD_625_50)

    struct v4l2_standard {
            __u32                index;
            v4l2_std_id          id;
            __u8                 name[24];
            struct v4l2_fract    frameperiod; /* Frames, not fields */
            __u32                framelines;
            __u32                reserved[4];
    };

    /*
     *      V I D E O       T I M I N G S   D V     P R E S E T
     */
    struct v4l2_dv_preset {
            __u32   preset;
            __u32   reserved[4];
    };

    /*
     *      D V     P R E S E T S   E N U M E R A T I O N
     */
    struct v4l2_dv_enum_preset {
            __u32   index;
            __u32   preset;
            __u8    name[32]; /* Name of the preset timing */
            __u32   width;
            __u32   height;
            __u32   reserved[4];
    };

    /*
     *      D V     P R E S E T     V A L U E S
     */
    #define         V4L2_DV_INVALID         0
    #define         V4L2_DV_480P59_94       1 /* BT.1362 */
    #define         V4L2_DV_576P50          2 /* BT.1362 */
    #define         V4L2_DV_720P24          3 /* SMPTE 296M */
    #define         V4L2_DV_720P25          4 /* SMPTE 296M */
    #define         V4L2_DV_720P30          5 /* SMPTE 296M */
    #define         V4L2_DV_720P50          6 /* SMPTE 296M */
    #define         V4L2_DV_720P59_94       7 /* SMPTE 274M */
    #define         V4L2_DV_720P60          8 /* SMPTE 274M/296M */
    #define         V4L2_DV_1080I29_97      9 /* BT.1120/ SMPTE 274M */
    #define         V4L2_DV_1080I30         10 /* BT.1120/ SMPTE 274M */
    #define         V4L2_DV_1080I25         11 /* BT.1120 */
    #define         V4L2_DV_1080I50         12 /* SMPTE 296M */
    #define         V4L2_DV_1080I60         13 /* SMPTE 296M */
    #define         V4L2_DV_1080P24         14 /* SMPTE 296M */
    #define         V4L2_DV_1080P25         15 /* SMPTE 296M */
    #define         V4L2_DV_1080P30         16 /* SMPTE 296M */
    #define         V4L2_DV_1080P50         17 /* BT.1120 */
    #define         V4L2_DV_1080P60         18 /* BT.1120 */

    /*
     *      D V     B T     T I M I N G S
     */

    /* BT.656/BT.1120 timing data */
    struct v4l2_bt_timings {
            __u32   width;          /* width in pixels */
            __u32   height;         /* height in lines */
            __u32   interlaced;     /* Interlaced or progressive */
            __u32   polarities;     /* Positive or negative polarity */
            __u64   pixelclock;     /* Pixel clock in HZ. Ex. 74.25MHz->74250000 */
            __u32   hfrontporch;    /* Horizpontal front porch in pixels */
            __u32   hsync;          /* Horizontal Sync length in pixels */
            __u32   hbackporch;     /* Horizontal back porch in pixels */
            __u32   vfrontporch;    /* Vertical front porch in pixels */
            __u32   vsync;          /* Vertical Sync length in lines */
            __u32   vbackporch;     /* Vertical back porch in lines */
            __u32   il_vfrontporch; /* Vertical front porch for bottom field of
                                     * interlaced field formats
                                     */
            __u32   il_vsync;       /* Vertical sync length for bottom field of
                                     * interlaced field formats
                                     */
            __u32   il_vbackporch;  /* Vertical back porch for bottom field of
                                     * interlaced field formats
                                     */
            __u32   reserved[16];
    } __attribute__ ((packed));

    /* Interlaced or progressive format */
    #define V4L2_DV_PROGRESSIVE     0
    #define V4L2_DV_INTERLACED      1

    /* Polarities. If bit is not set, it is assumed to be negative polarity */
    #define V4L2_DV_VSYNC_POS_POL   0x00000001
    #define V4L2_DV_HSYNC_POS_POL   0x00000002

    /* DV timings */
    struct v4l2_dv_timings {
            __u32 type;
            union {
                    struct v4l2_bt_timings  bt;
                    __u32   reserved[32];
            };
    } __attribute__ ((packed));

    /* Values for the type field */
    #define V4L2_DV_BT_656_1120     0       /* BT.656/1120 timing type */

    /*
     *      V I D E O   I N P U T S
     */
    struct v4l2_input {
            __u32        index;             /*  Which input */
            __u8         name[32];          /*  Label */
            __u32        type;              /*  Type of input */
            __u32        audioset;          /*  Associated audios (bitfield) */
            __u32        tuner;             /*  Associated tuner */
            v4l2_std_id  std;
            __u32        status;
            __u32        capabilities;
            __u32        reserved[3];
    };

    /*  Values for the 'type' field */
    #define V4L2_INPUT_TYPE_TUNER           1
    #define V4L2_INPUT_TYPE_CAMERA          2

    /* field 'status' - general */
    #define V4L2_IN_ST_NO_POWER    0x00000001  /* Attached device is off */
    #define V4L2_IN_ST_NO_SIGNAL   0x00000002
    #define V4L2_IN_ST_NO_COLOR    0x00000004

    /* field 'status' - sensor orientation */
    /* If sensor is mounted upside down set both bits */
    #define V4L2_IN_ST_HFLIP       0x00000010 /* Frames are flipped horizontally */
    #define V4L2_IN_ST_VFLIP       0x00000020 /* Frames are flipped vertically */

    /* field 'status' - analog */
    #define V4L2_IN_ST_NO_H_LOCK   0x00000100  /* No horizontal sync lock */
    #define V4L2_IN_ST_COLOR_KILL  0x00000200  /* Color killer is active */

    /* field 'status' - digital */
    #define V4L2_IN_ST_NO_SYNC     0x00010000  /* No synchronization lock */
    #define V4L2_IN_ST_NO_EQU      0x00020000  /* No equalizer lock */
    #define V4L2_IN_ST_NO_CARRIER  0x00040000  /* Carrier recovery failed */

    /* field 'status' - VCR and set-top box */
    #define V4L2_IN_ST_MACROVISION 0x01000000  /* Macrovision detected */
    #define V4L2_IN_ST_NO_ACCESS   0x02000000  /* Conditional access denied */
    #define V4L2_IN_ST_VTR         0x04000000  /* VTR time constant */

    /* capabilities flags */
    #define V4L2_IN_CAP_PRESETS             0x00000001 /* Supports S_DV_PRESET */
    #define V4L2_IN_CAP_CUSTOM_TIMINGS      0x00000002 /* Supports S_DV_TIMINGS */
    #define V4L2_IN_CAP_STD                 0x00000004 /* Supports S_STD */

    /*
     *      V I D E O   O U T P U T S
     */
    struct v4l2_output {
            __u32        index;             /*  Which output */
            __u8         name[32];          /*  Label */
            __u32        type;              /*  Type of output */
            __u32        audioset;          /*  Associated audios (bitfield) */
            __u32        modulator;         /*  Associated modulator */
            v4l2_std_id  std;
            __u32        capabilities;
            __u32        reserved[3];
    };
    /*  Values for the 'type' field */
    #define V4L2_OUTPUT_TYPE_MODULATOR              1
    #define V4L2_OUTPUT_TYPE_ANALOG                 2
    #define V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY       3

    /* capabilities flags */
    #define V4L2_OUT_CAP_PRESETS            0x00000001 /* Supports S_DV_PRESET */
    #define V4L2_OUT_CAP_CUSTOM_TIMINGS     0x00000002 /* Supports S_DV_TIMINGS */
    #define V4L2_OUT_CAP_STD                0x00000004 /* Supports S_STD */

    /*
     *      C O N T R O L S
     */
    struct v4l2_control {
            __u32                id;
            __s32                value;
    };

    struct v4l2_ext_control {
            __u32 id;
            __u32 size;
            __u32 reserved2[1];
            union {
                    __s32 value;
                    __s64 value64;
                    char *string;
            };
    } __attribute__ ((packed));

    struct v4l2_ext_controls {
            __u32 ctrl_class;
            __u32 count;
            __u32 error_idx;
            __u32 reserved[2];
            struct v4l2_ext_control *controls;
    };

    /*  Values for ctrl_class field */
    #define V4L2_CTRL_CLASS_USER 0x00980000 /* Old-style 'user' controls */
    #define V4L2_CTRL_CLASS_MPEG 0x00990000 /* MPEG-compression controls */
    #define V4L2_CTRL_CLASS_CAMERA 0x009a0000       /* Camera class controls */
    #define V4L2_CTRL_CLASS_FM_TX 0x009b0000        /* FM Modulator control class */

    #define V4L2_CTRL_ID_MASK         (0x0fffffff)
    #define V4L2_CTRL_ID2CLASS(id)    ((id) & 0x0fff0000UL)
    #define V4L2_CTRL_DRIVER_PRIV(id) (((id) & 0xffff) >= 0x1000)

    enum v4l2_ctrl_type {
            V4L2_CTRL_TYPE_INTEGER       = 1,
            V4L2_CTRL_TYPE_BOOLEAN       = 2,
            V4L2_CTRL_TYPE_MENU          = 3,
            V4L2_CTRL_TYPE_BUTTON        = 4,
            V4L2_CTRL_TYPE_INTEGER64     = 5,
            V4L2_CTRL_TYPE_CTRL_CLASS    = 6,
            V4L2_CTRL_TYPE_STRING        = 7,
    };

    /*  Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
    struct v4l2_queryctrl {
            __u32                id;
            enum v4l2_ctrl_type  type;
            __u8                 name[32];  /* Whatever */
            __s32                minimum;   /* Note signedness */
            __s32                maximum;
            __s32                step;
            __s32                default_value;
            __u32                flags;
            __u32                reserved[2];
    };

    /*  Used in the VIDIOC_QUERYMENU ioctl for querying menu items */
    struct v4l2_querymenu {
            __u32           id;
            __u32           index;
            __u8            name[32];       /* Whatever */
            __u32           reserved;
    };

    /*  Control flags  */
    #define V4L2_CTRL_FLAG_DISABLED         0x0001
    #define V4L2_CTRL_FLAG_GRABBED          0x0002
    #define V4L2_CTRL_FLAG_READ_ONLY        0x0004
    #define V4L2_CTRL_FLAG_UPDATE           0x0008
    #define V4L2_CTRL_FLAG_INACTIVE         0x0010
    #define V4L2_CTRL_FLAG_SLIDER           0x0020
    #define V4L2_CTRL_FLAG_WRITE_ONLY       0x0040

    /*  Query flag, to be ORed with the control ID */
    #define V4L2_CTRL_FLAG_NEXT_CTRL        0x80000000

    /*  User-class control IDs defined by V4L2 */
    #define V4L2_CID_BASE                   (V4L2_CTRL_CLASS_USER | 0x900)
    #define V4L2_CID_USER_BASE              V4L2_CID_BASE
    /*  IDs reserved for driver specific controls */
    #define V4L2_CID_PRIVATE_BASE           0x08000000

    #define V4L2_CID_USER_CLASS             (V4L2_CTRL_CLASS_USER | 1)
    #define V4L2_CID_BRIGHTNESS             (V4L2_CID_BASE+0)
    #define V4L2_CID_CONTRAST               (V4L2_CID_BASE+1)
    #define V4L2_CID_SATURATION             (V4L2_CID_BASE+2)
    #define V4L2_CID_HUE                    (V4L2_CID_BASE+3)
    #define V4L2_CID_AUDIO_VOLUME           (V4L2_CID_BASE+5)
    #define V4L2_CID_AUDIO_BALANCE          (V4L2_CID_BASE+6)
    #define V4L2_CID_AUDIO_BASS             (V4L2_CID_BASE+7)
    #define V4L2_CID_AUDIO_TREBLE           (V4L2_CID_BASE+8)
    #define V4L2_CID_AUDIO_MUTE             (V4L2_CID_BASE+9)
    #define V4L2_CID_AUDIO_LOUDNESS         (V4L2_CID_BASE+10)
    #define V4L2_CID_BLACK_LEVEL            (V4L2_CID_BASE+11) /* Deprecated */
    #define V4L2_CID_AUTO_WHITE_BALANCE     (V4L2_CID_BASE+12)
    #define V4L2_CID_DO_WHITE_BALANCE       (V4L2_CID_BASE+13)
    #define V4L2_CID_RED_BALANCE            (V4L2_CID_BASE+14)
    #define V4L2_CID_BLUE_BALANCE           (V4L2_CID_BASE+15)
    #define V4L2_CID_GAMMA                  (V4L2_CID_BASE+16)
    #define V4L2_CID_WHITENESS              (V4L2_CID_GAMMA) /* Deprecated */
    #define V4L2_CID_EXPOSURE               (V4L2_CID_BASE+17)
    #define V4L2_CID_AUTOGAIN               (V4L2_CID_BASE+18)
    #define V4L2_CID_GAIN                   (V4L2_CID_BASE+19)
    #define V4L2_CID_HFLIP                  (V4L2_CID_BASE+20)
    #define V4L2_CID_VFLIP                  (V4L2_CID_BASE+21)

    /* Deprecated; use V4L2_CID_PAN_RESET and V4L2_CID_TILT_RESET */
    #define V4L2_CID_HCENTER                (V4L2_CID_BASE+22)
    #define V4L2_CID_VCENTER                (V4L2_CID_BASE+23)

    #define V4L2_CID_POWER_LINE_FREQUENCY   (V4L2_CID_BASE+24)
    enum v4l2_power_line_frequency {
            V4L2_CID_POWER_LINE_FREQUENCY_DISABLED  = 0,
            V4L2_CID_POWER_LINE_FREQUENCY_50HZ      = 1,
            V4L2_CID_POWER_LINE_FREQUENCY_60HZ      = 2,
    };
    #define V4L2_CID_HUE_AUTO                       (V4L2_CID_BASE+25)
    #define V4L2_CID_WHITE_BALANCE_TEMPERATURE      (V4L2_CID_BASE+26)
    #define V4L2_CID_SHARPNESS                      (V4L2_CID_BASE+27)
    #define V4L2_CID_BACKLIGHT_COMPENSATION         (V4L2_CID_BASE+28)
    #define V4L2_CID_CHROMA_AGC                     (V4L2_CID_BASE+29)
    #define V4L2_CID_COLOR_KILLER                   (V4L2_CID_BASE+30)
    #define V4L2_CID_COLORFX                        (V4L2_CID_BASE+31)
    enum v4l2_colorfx {
            V4L2_COLORFX_NONE       = 0,
            V4L2_COLORFX_BW         = 1,
            V4L2_COLORFX_SEPIA      = 2,
            V4L2_COLORFX_NEGATIVE = 3,
            V4L2_COLORFX_EMBOSS = 4,
            V4L2_COLORFX_SKETCH = 5,
            V4L2_COLORFX_SKY_BLUE = 6,
            V4L2_COLORFX_GRASS_GREEN = 7,
            V4L2_COLORFX_SKIN_WHITEN = 8,
            V4L2_COLORFX_VIVID = 9,
    };
    #define V4L2_CID_AUTOBRIGHTNESS                 (V4L2_CID_BASE+32)
    #define V4L2_CID_BAND_STOP_FILTER               (V4L2_CID_BASE+33)

    #define V4L2_CID_ROTATE                         (V4L2_CID_BASE+34)
    #define V4L2_CID_BG_COLOR                       (V4L2_CID_BASE+35)

    #define V4L2_CID_CHROMA_GAIN                    (V4L2_CID_BASE+36)

    #define V4L2_CID_ILLUMINATORS_1                 (V4L2_CID_BASE+37)
    #define V4L2_CID_ILLUMINATORS_2                 (V4L2_CID_BASE+38)

    /* last CID + 1 */
    #define V4L2_CID_LASTP1                         (V4L2_CID_BASE+39)

    /*  MPEG-class control IDs defined by V4L2 */
    #define V4L2_CID_MPEG_BASE                      (V4L2_CTRL_CLASS_MPEG | 0x900)
    #define V4L2_CID_MPEG_CLASS                     (V4L2_CTRL_CLASS_MPEG | 1)

    /*  MPEG streams */
    #define V4L2_CID_MPEG_STREAM_TYPE               (V4L2_CID_MPEG_BASE+0)
    enum v4l2_mpeg_stream_type {
            V4L2_MPEG_STREAM_TYPE_MPEG2_PS   = 0, /* MPEG-2 program stream */
            V4L2_MPEG_STREAM_TYPE_MPEG2_TS   = 1, /* MPEG-2 transport stream */
            V4L2_MPEG_STREAM_TYPE_MPEG1_SS   = 2, /* MPEG-1 system stream */
            V4L2_MPEG_STREAM_TYPE_MPEG2_DVD  = 3, /* MPEG-2 DVD-compatible stream */
            V4L2_MPEG_STREAM_TYPE_MPEG1_VCD  = 4, /* MPEG-1 VCD-compatible stream */
            V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD = 5, /* MPEG-2 SVCD-compatible stream */
    };
    #define V4L2_CID_MPEG_STREAM_PID_PMT            (V4L2_CID_MPEG_BASE+1)
    #define V4L2_CID_MPEG_STREAM_PID_AUDIO          (V4L2_CID_MPEG_BASE+2)
    #define V4L2_CID_MPEG_STREAM_PID_VIDEO          (V4L2_CID_MPEG_BASE+3)
    #define V4L2_CID_MPEG_STREAM_PID_PCR            (V4L2_CID_MPEG_BASE+4)
    #define V4L2_CID_MPEG_STREAM_PES_ID_AUDIO       (V4L2_CID_MPEG_BASE+5)
    #define V4L2_CID_MPEG_STREAM_PES_ID_VIDEO       (V4L2_CID_MPEG_BASE+6)
    #define V4L2_CID_MPEG_STREAM_VBI_FMT            (V4L2_CID_MPEG_BASE+7)
    enum v4l2_mpeg_stream_vbi_fmt {
            V4L2_MPEG_STREAM_VBI_FMT_NONE = 0,  /* No VBI in the MPEG stream */
            V4L2_MPEG_STREAM_VBI_FMT_IVTV = 1,  /* VBI in private packets, IVTV format */
    };

    /*  MPEG audio */
    #define V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ       (V4L2_CID_MPEG_BASE+100)
    enum v4l2_mpeg_audio_sampling_freq {
            V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100 = 0,
            V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000 = 1,
            V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000 = 2,
    };
    #define V4L2_CID_MPEG_AUDIO_ENCODING            (V4L2_CID_MPEG_BASE+101)
    enum v4l2_mpeg_audio_encoding {
            V4L2_MPEG_AUDIO_ENCODING_LAYER_1 = 0,
            V4L2_MPEG_AUDIO_ENCODING_LAYER_2 = 1,
            V4L2_MPEG_AUDIO_ENCODING_LAYER_3 = 2,
            V4L2_MPEG_AUDIO_ENCODING_AAC     = 3,
            V4L2_MPEG_AUDIO_ENCODING_AC3     = 4,
    };
    #define V4L2_CID_MPEG_AUDIO_L1_BITRATE          (V4L2_CID_MPEG_BASE+102)
    enum v4l2_mpeg_audio_l1_bitrate {
            V4L2_MPEG_AUDIO_L1_BITRATE_32K  = 0,
            V4L2_MPEG_AUDIO_L1_BITRATE_64K  = 1,
            V4L2_MPEG_AUDIO_L1_BITRATE_96K  = 2,
            V4L2_MPEG_AUDIO_L1_BITRATE_128K = 3,
            V4L2_MPEG_AUDIO_L1_BITRATE_160K = 4,
            V4L2_MPEG_AUDIO_L1_BITRATE_192K = 5,
            V4L2_MPEG_AUDIO_L1_BITRATE_224K = 6,
            V4L2_MPEG_AUDIO_L1_BITRATE_256K = 7,
            V4L2_MPEG_AUDIO_L1_BITRATE_288K = 8,
            V4L2_MPEG_AUDIO_L1_BITRATE_320K = 9,
            V4L2_MPEG_AUDIO_L1_BITRATE_352K = 10,
            V4L2_MPEG_AUDIO_L1_BITRATE_384K = 11,
            V4L2_MPEG_AUDIO_L1_BITRATE_416K = 12,
            V4L2_MPEG_AUDIO_L1_BITRATE_448K = 13,
    };
    #define V4L2_CID_MPEG_AUDIO_L2_BITRATE          (V4L2_CID_MPEG_BASE+103)
    enum v4l2_mpeg_audio_l2_bitrate {
            V4L2_MPEG_AUDIO_L2_BITRATE_32K  = 0,
            V4L2_MPEG_AUDIO_L2_BITRATE_48K  = 1,
            V4L2_MPEG_AUDIO_L2_BITRATE_56K  = 2,
            V4L2_MPEG_AUDIO_L2_BITRATE_64K  = 3,
            V4L2_MPEG_AUDIO_L2_BITRATE_80K  = 4,
            V4L2_MPEG_AUDIO_L2_BITRATE_96K  = 5,
            V4L2_MPEG_AUDIO_L2_BITRATE_112K = 6,
            V4L2_MPEG_AUDIO_L2_BITRATE_128K = 7,
            V4L2_MPEG_AUDIO_L2_BITRATE_160K = 8,
            V4L2_MPEG_AUDIO_L2_BITRATE_192K = 9,
            V4L2_MPEG_AUDIO_L2_BITRATE_224K = 10,
            V4L2_MPEG_AUDIO_L2_BITRATE_256K = 11,
            V4L2_MPEG_AUDIO_L2_BITRATE_320K = 12,
            V4L2_MPEG_AUDIO_L2_BITRATE_384K = 13,
    };
    #define V4L2_CID_MPEG_AUDIO_L3_BITRATE          (V4L2_CID_MPEG_BASE+104)
    enum v4l2_mpeg_audio_l3_bitrate {
            V4L2_MPEG_AUDIO_L3_BITRATE_32K  = 0,
            V4L2_MPEG_AUDIO_L3_BITRATE_40K  = 1,
            V4L2_MPEG_AUDIO_L3_BITRATE_48K  = 2,
            V4L2_MPEG_AUDIO_L3_BITRATE_56K  = 3,
            V4L2_MPEG_AUDIO_L3_BITRATE_64K  = 4,
            V4L2_MPEG_AUDIO_L3_BITRATE_80K  = 5,
            V4L2_MPEG_AUDIO_L3_BITRATE_96K  = 6,
            V4L2_MPEG_AUDIO_L3_BITRATE_112K = 7,
            V4L2_MPEG_AUDIO_L3_BITRATE_128K = 8,
            V4L2_MPEG_AUDIO_L3_BITRATE_160K = 9,
            V4L2_MPEG_AUDIO_L3_BITRATE_192K = 10,
            V4L2_MPEG_AUDIO_L3_BITRATE_224K = 11,
            V4L2_MPEG_AUDIO_L3_BITRATE_256K = 12,
            V4L2_MPEG_AUDIO_L3_BITRATE_320K = 13,
    };
    #define V4L2_CID_MPEG_AUDIO_MODE                (V4L2_CID_MPEG_BASE+105)
    enum v4l2_mpeg_audio_mode {
            V4L2_MPEG_AUDIO_MODE_STEREO       = 0,
            V4L2_MPEG_AUDIO_MODE_JOINT_STEREO = 1,
            V4L2_MPEG_AUDIO_MODE_DUAL         = 2,
            V4L2_MPEG_AUDIO_MODE_MONO         = 3,
    };
    #define V4L2_CID_MPEG_AUDIO_MODE_EXTENSION      (V4L2_CID_MPEG_BASE+106)
    enum v4l2_mpeg_audio_mode_extension {
            V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4  = 0,
            V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_8  = 1,
            V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_12 = 2,
            V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_16 = 3,
    };
    #define V4L2_CID_MPEG_AUDIO_EMPHASIS            (V4L2_CID_MPEG_BASE+107)
    enum v4l2_mpeg_audio_emphasis {
            V4L2_MPEG_AUDIO_EMPHASIS_NONE         = 0,
            V4L2_MPEG_AUDIO_EMPHASIS_50_DIV_15_uS = 1,
            V4L2_MPEG_AUDIO_EMPHASIS_CCITT_J17    = 2,
    };
    #define V4L2_CID_MPEG_AUDIO_CRC                 (V4L2_CID_MPEG_BASE+108)
    enum v4l2_mpeg_audio_crc {
            V4L2_MPEG_AUDIO_CRC_NONE  = 0,
            V4L2_MPEG_AUDIO_CRC_CRC16 = 1,
    };
    #define V4L2_CID_MPEG_AUDIO_MUTE                (V4L2_CID_MPEG_BASE+109)
    #define V4L2_CID_MPEG_AUDIO_AAC_BITRATE         (V4L2_CID_MPEG_BASE+110)
    #define V4L2_CID_MPEG_AUDIO_AC3_BITRATE         (V4L2_CID_MPEG_BASE+111)
    enum v4l2_mpeg_audio_ac3_bitrate {
            V4L2_MPEG_AUDIO_AC3_BITRATE_32K  = 0,
            V4L2_MPEG_AUDIO_AC3_BITRATE_40K  = 1,
            V4L2_MPEG_AUDIO_AC3_BITRATE_48K  = 2,
            V4L2_MPEG_AUDIO_AC3_BITRATE_56K  = 3,
            V4L2_MPEG_AUDIO_AC3_BITRATE_64K  = 4,
            V4L2_MPEG_AUDIO_AC3_BITRATE_80K  = 5,
            V4L2_MPEG_AUDIO_AC3_BITRATE_96K  = 6,
            V4L2_MPEG_AUDIO_AC3_BITRATE_112K = 7,
            V4L2_MPEG_AUDIO_AC3_BITRATE_128K = 8,
            V4L2_MPEG_AUDIO_AC3_BITRATE_160K = 9,
            V4L2_MPEG_AUDIO_AC3_BITRATE_192K = 10,
            V4L2_MPEG_AUDIO_AC3_BITRATE_224K = 11,
            V4L2_MPEG_AUDIO_AC3_BITRATE_256K = 12,
            V4L2_MPEG_AUDIO_AC3_BITRATE_320K = 13,
            V4L2_MPEG_AUDIO_AC3_BITRATE_384K = 14,
            V4L2_MPEG_AUDIO_AC3_BITRATE_448K = 15,
            V4L2_MPEG_AUDIO_AC3_BITRATE_512K = 16,
            V4L2_MPEG_AUDIO_AC3_BITRATE_576K = 17,
            V4L2_MPEG_AUDIO_AC3_BITRATE_640K = 18,
    };

    /*  MPEG video */
    #define V4L2_CID_MPEG_VIDEO_ENCODING            (V4L2_CID_MPEG_BASE+200)
    enum v4l2_mpeg_video_encoding {
            V4L2_MPEG_VIDEO_ENCODING_MPEG_1     = 0,
            V4L2_MPEG_VIDEO_ENCODING_MPEG_2     = 1,
            V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC = 2,
    };
    #define V4L2_CID_MPEG_VIDEO_ASPECT              (V4L2_CID_MPEG_BASE+201)
    enum v4l2_mpeg_video_aspect {
            V4L2_MPEG_VIDEO_ASPECT_1x1     = 0,
            V4L2_MPEG_VIDEO_ASPECT_4x3     = 1,
            V4L2_MPEG_VIDEO_ASPECT_16x9    = 2,
            V4L2_MPEG_VIDEO_ASPECT_221x100 = 3,
    };
    #define V4L2_CID_MPEG_VIDEO_B_FRAMES            (V4L2_CID_MPEG_BASE+202)
    #define V4L2_CID_MPEG_VIDEO_GOP_SIZE            (V4L2_CID_MPEG_BASE+203)
    #define V4L2_CID_MPEG_VIDEO_GOP_CLOSURE         (V4L2_CID_MPEG_BASE+204)
    #define V4L2_CID_MPEG_VIDEO_PULLDOWN            (V4L2_CID_MPEG_BASE+205)
    #define V4L2_CID_MPEG_VIDEO_BITRATE_MODE        (V4L2_CID_MPEG_BASE+206)
    enum v4l2_mpeg_video_bitrate_mode {
            V4L2_MPEG_VIDEO_BITRATE_MODE_VBR = 0,
            V4L2_MPEG_VIDEO_BITRATE_MODE_CBR = 1,
    };
    #define V4L2_CID_MPEG_VIDEO_BITRATE             (V4L2_CID_MPEG_BASE+207)
    #define V4L2_CID_MPEG_VIDEO_BITRATE_PEAK        (V4L2_CID_MPEG_BASE+208)
    #define V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION (V4L2_CID_MPEG_BASE+209)
    #define V4L2_CID_MPEG_VIDEO_MUTE                (V4L2_CID_MPEG_BASE+210)
    #define V4L2_CID_MPEG_VIDEO_MUTE_YUV            (V4L2_CID_MPEG_BASE+211)

    /*  MPEG-class control IDs specific to the CX2341x driver as defined by V4L2 */
    #define V4L2_CID_MPEG_CX2341X_BASE                              (V4L2_CTRL_CLASS_MPEG | 0x1000)
    #define V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE         (V4L2_CID_MPEG_CX2341X_BASE+0)
    enum v4l2_mpeg_cx2341x_video_spatial_filter_mode {
            V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_MANUAL = 0,
            V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO   = 1,
    };
    #define V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER              (V4L2_CID_MPEG_CX2341X_BASE+1)
    #define V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE    (V4L2_CID_MPEG_CX2341X_BASE+2)
    enum v4l2_mpeg_cx2341x_video_luma_spatial_filter_type {
            V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_OFF                  = 0,
            V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_HOR               = 1,
            V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_VERT              = 2,
            V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_HV_SEPARABLE      = 3,
            V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_SYM_NON_SEPARABLE = 4,
    };
    #define V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE  (V4L2_CID_MPEG_CX2341X_BASE+3)
    enum v4l2_mpeg_cx2341x_video_chroma_spatial_filter_type {
            V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_OFF    = 0,
            V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_1D_HOR = 1,
    };
    #define V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE        (V4L2_CID_MPEG_CX2341X_BASE+4)
    enum v4l2_mpeg_cx2341x_video_temporal_filter_mode {
            V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_MANUAL = 0,
            V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_AUTO   = 1,
    };
    #define V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER             (V4L2_CID_MPEG_CX2341X_BASE+5)
    #define V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE          (V4L2_CID_MPEG_CX2341X_BASE+6)
    enum v4l2_mpeg_cx2341x_video_median_filter_type {
            V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF      = 0,
            V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_HOR      = 1,
            V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_VERT     = 2,
            V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_HOR_VERT = 3,
            V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_DIAG     = 4,
    };
    #define V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM   (V4L2_CID_MPEG_CX2341X_BASE+7)
    #define V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP      (V4L2_CID_MPEG_CX2341X_BASE+8)
    #define V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM (V4L2_CID_MPEG_CX2341X_BASE+9)
    #define V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP    (V4L2_CID_MPEG_CX2341X_BASE+10)
    #define V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS         (V4L2_CID_MPEG_CX2341X_BASE+11)

    /*  Camera class control IDs */
    #define V4L2_CID_CAMERA_CLASS_BASE      (V4L2_CTRL_CLASS_CAMERA | 0x900)
    #define V4L2_CID_CAMERA_CLASS           (V4L2_CTRL_CLASS_CAMERA | 1)

    #define V4L2_CID_EXPOSURE_AUTO                  (V4L2_CID_CAMERA_CLASS_BASE+1)
    enum  v4l2_exposure_auto_type {
            V4L2_EXPOSURE_AUTO = 0,
            V4L2_EXPOSURE_MANUAL = 1,
            V4L2_EXPOSURE_SHUTTER_PRIORITY = 2,
            V4L2_EXPOSURE_APERTURE_PRIORITY = 3
    };
    #define V4L2_CID_EXPOSURE_ABSOLUTE              (V4L2_CID_CAMERA_CLASS_BASE+2)
    #define V4L2_CID_EXPOSURE_AUTO_PRIORITY         (V4L2_CID_CAMERA_CLASS_BASE+3)

    #define V4L2_CID_PAN_RELATIVE                   (V4L2_CID_CAMERA_CLASS_BASE+4)
    #define V4L2_CID_TILT_RELATIVE                  (V4L2_CID_CAMERA_CLASS_BASE+5)
    #define V4L2_CID_PAN_RESET                      (V4L2_CID_CAMERA_CLASS_BASE+6)
    #define V4L2_CID_TILT_RESET                     (V4L2_CID_CAMERA_CLASS_BASE+7)

    #define V4L2_CID_PAN_ABSOLUTE                   (V4L2_CID_CAMERA_CLASS_BASE+8)
    #define V4L2_CID_TILT_ABSOLUTE                  (V4L2_CID_CAMERA_CLASS_BASE+9)

    #define V4L2_CID_FOCUS_ABSOLUTE                 (V4L2_CID_CAMERA_CLASS_BASE+10)
    #define V4L2_CID_FOCUS_RELATIVE                 (V4L2_CID_CAMERA_CLASS_BASE+11)
    #define V4L2_CID_FOCUS_AUTO                     (V4L2_CID_CAMERA_CLASS_BASE+12)

    #define V4L2_CID_ZOOM_ABSOLUTE                  (V4L2_CID_CAMERA_CLASS_BASE+13)
    #define V4L2_CID_ZOOM_RELATIVE                  (V4L2_CID_CAMERA_CLASS_BASE+14)
    #define V4L2_CID_ZOOM_CONTINUOUS                (V4L2_CID_CAMERA_CLASS_BASE+15)

    #define V4L2_CID_PRIVACY                        (V4L2_CID_CAMERA_CLASS_BASE+16)

    #define V4L2_CID_IRIS_ABSOLUTE                  (V4L2_CID_CAMERA_CLASS_BASE+17)
    #define V4L2_CID_IRIS_RELATIVE                  (V4L2_CID_CAMERA_CLASS_BASE+18)

    /* FM Modulator class control IDs */
    #define V4L2_CID_FM_TX_CLASS_BASE               (V4L2_CTRL_CLASS_FM_TX | 0x900)
    #define V4L2_CID_FM_TX_CLASS                    (V4L2_CTRL_CLASS_FM_TX | 1)

    #define V4L2_CID_RDS_TX_DEVIATION               (V4L2_CID_FM_TX_CLASS_BASE + 1)
    #define V4L2_CID_RDS_TX_PI                      (V4L2_CID_FM_TX_CLASS_BASE + 2)
    #define V4L2_CID_RDS_TX_PTY                     (V4L2_CID_FM_TX_CLASS_BASE + 3)
    #define V4L2_CID_RDS_TX_PS_NAME                 (V4L2_CID_FM_TX_CLASS_BASE + 5)
    #define V4L2_CID_RDS_TX_RADIO_TEXT              (V4L2_CID_FM_TX_CLASS_BASE + 6)

    #define V4L2_CID_AUDIO_LIMITER_ENABLED          (V4L2_CID_FM_TX_CLASS_BASE + 64)
    #define V4L2_CID_AUDIO_LIMITER_RELEASE_TIME     (V4L2_CID_FM_TX_CLASS_BASE + 65)
    #define V4L2_CID_AUDIO_LIMITER_DEVIATION        (V4L2_CID_FM_TX_CLASS_BASE + 66)

    #define V4L2_CID_AUDIO_COMPRESSION_ENABLED      (V4L2_CID_FM_TX_CLASS_BASE + 80)
    #define V4L2_CID_AUDIO_COMPRESSION_GAIN         (V4L2_CID_FM_TX_CLASS_BASE + 81)
    #define V4L2_CID_AUDIO_COMPRESSION_THRESHOLD    (V4L2_CID_FM_TX_CLASS_BASE + 82)
    #define V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME  (V4L2_CID_FM_TX_CLASS_BASE + 83)
    #define V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME (V4L2_CID_FM_TX_CLASS_BASE + 84)

    #define V4L2_CID_PILOT_TONE_ENABLED             (V4L2_CID_FM_TX_CLASS_BASE + 96)
    #define V4L2_CID_PILOT_TONE_DEVIATION           (V4L2_CID_FM_TX_CLASS_BASE + 97)
    #define V4L2_CID_PILOT_TONE_FREQUENCY           (V4L2_CID_FM_TX_CLASS_BASE + 98)

    #define V4L2_CID_TUNE_PREEMPHASIS               (V4L2_CID_FM_TX_CLASS_BASE + 112)
    enum v4l2_preemphasis {
            V4L2_PREEMPHASIS_DISABLED       = 0,
            V4L2_PREEMPHASIS_50_uS          = 1,
            V4L2_PREEMPHASIS_75_uS          = 2,
    };
    #define V4L2_CID_TUNE_POWER_LEVEL               (V4L2_CID_FM_TX_CLASS_BASE + 113)
    #define V4L2_CID_TUNE_ANTENNA_CAPACITOR         (V4L2_CID_FM_TX_CLASS_BASE + 114)

    /*
     *      T U N I N G
     */
    struct v4l2_tuner {
            __u32                   index;
            __u8                    name[32];
            enum v4l2_tuner_type    type;
            __u32                   capability;
            __u32                   rangelow;
            __u32                   rangehigh;
            __u32                   rxsubchans;
            __u32                   audmode;
            __s32                   signal;
            __s32                   afc;
            __u32                   reserved[4];
    };

    struct v4l2_modulator {
            __u32                   index;
            __u8                    name[32];
            __u32                   capability;
            __u32                   rangelow;
            __u32                   rangehigh;
            __u32                   txsubchans;
            __u32                   reserved[4];
    };

    /*  Flags for the 'capability' field */
    #define V4L2_TUNER_CAP_LOW              0x0001
    #define V4L2_TUNER_CAP_NORM             0x0002
    #define V4L2_TUNER_CAP_STEREO           0x0010
    #define V4L2_TUNER_CAP_LANG2            0x0020
    #define V4L2_TUNER_CAP_SAP              0x0020
    #define V4L2_TUNER_CAP_LANG1            0x0040
    #define V4L2_TUNER_CAP_RDS              0x0080
    #define V4L2_TUNER_CAP_RDS_BLOCK_IO     0x0100
    #define V4L2_TUNER_CAP_RDS_CONTROLS     0x0200

    /*  Flags for the 'rxsubchans' field */
    #define V4L2_TUNER_SUB_MONO             0x0001
    #define V4L2_TUNER_SUB_STEREO           0x0002
    #define V4L2_TUNER_SUB_LANG2            0x0004
    #define V4L2_TUNER_SUB_SAP              0x0004
    #define V4L2_TUNER_SUB_LANG1            0x0008
    #define V4L2_TUNER_SUB_RDS              0x0010

    /*  Values for the 'audmode' field */
    #define V4L2_TUNER_MODE_MONO            0x0000
    #define V4L2_TUNER_MODE_STEREO          0x0001
    #define V4L2_TUNER_MODE_LANG2           0x0002
    #define V4L2_TUNER_MODE_SAP             0x0002
    #define V4L2_TUNER_MODE_LANG1           0x0003
    #define V4L2_TUNER_MODE_LANG1_LANG2     0x0004

    struct v4l2_frequency {
            __u32                 tuner;
            enum v4l2_tuner_type  type;
            __u32                 frequency;
            __u32                 reserved[8];
    };

    struct v4l2_hw_freq_seek {
            __u32                 tuner;
            enum v4l2_tuner_type  type;
            __u32                 seek_upward;
            __u32                 wrap_around;
            __u32                 spacing;
            __u32                 reserved[7];
    };

    /*
     *      R D S
     */

    struct v4l2_rds_data {
            __u8    lsb;
            __u8    msb;
            __u8    block;
    } __attribute__ ((packed));

    #define V4L2_RDS_BLOCK_MSK       0x7
    #define V4L2_RDS_BLOCK_A         0
    #define V4L2_RDS_BLOCK_B         1
    #define V4L2_RDS_BLOCK_C         2
    #define V4L2_RDS_BLOCK_D         3
    #define V4L2_RDS_BLOCK_C_ALT     4
    #define V4L2_RDS_BLOCK_INVALID   7

    #define V4L2_RDS_BLOCK_CORRECTED 0x40
    #define V4L2_RDS_BLOCK_ERROR     0x80

    /*
     *      A U D I O
     */
    struct v4l2_audio {
            __u32   index;
            __u8    name[32];
            __u32   capability;
            __u32   mode;
            __u32   reserved[2];
    };

    /*  Flags for the 'capability' field */
    #define V4L2_AUDCAP_STEREO              0x00001
    #define V4L2_AUDCAP_AVL                 0x00002

    /*  Flags for the 'mode' field */
    #define V4L2_AUDMODE_AVL                0x00001

    struct v4l2_audioout {
            __u32   index;
            __u8    name[32];
            __u32   capability;
            __u32   mode;
            __u32   reserved[2];
    };

    /*
     *      M P E G   S E R V I C E S
     *
     *      NOTE: EXPERIMENTAL API
     */
    #if 1
    #define V4L2_ENC_IDX_FRAME_I    (0)
    #define V4L2_ENC_IDX_FRAME_P    (1)
    #define V4L2_ENC_IDX_FRAME_B    (2)
    #define V4L2_ENC_IDX_FRAME_MASK (0xf)

    struct v4l2_enc_idx_entry {
            __u64 offset;
            __u64 pts;
            __u32 length;
            __u32 flags;
            __u32 reserved[2];
    };

    #define V4L2_ENC_IDX_ENTRIES (64)
    struct v4l2_enc_idx {
            __u32 entries;
            __u32 entries_cap;
            __u32 reserved[4];
            struct v4l2_enc_idx_entry entry[V4L2_ENC_IDX_ENTRIES];
    };

    #define V4L2_ENC_CMD_START      (0)
    #define V4L2_ENC_CMD_STOP       (1)
    #define V4L2_ENC_CMD_PAUSE      (2)
    #define V4L2_ENC_CMD_RESUME     (3)

    /* Flags for V4L2_ENC_CMD_STOP */
    #define V4L2_ENC_CMD_STOP_AT_GOP_END    (1 << 0)

    struct v4l2_encoder_cmd {
            __u32 cmd;
            __u32 flags;
            union {
                    struct {
                            __u32 data[8];
                    } raw;
            };
    };

    #endif

    /*
     *      D A T A   S E R V I C E S   ( V B I )
     *
     *      Data services API by Michael Schimek
     */

    /* Raw VBI */
    struct v4l2_vbi_format {
            __u32   sampling_rate;          /* in 1 Hz */
            __u32   offset;
            __u32   samples_per_line;
            __u32   sample_format;          /* V4L2_PIX_FMT_* */
            __s32   start[2];
            __u32   count[2];
            __u32   flags;                  /* V4L2_VBI_* */
            __u32   reserved[2];            /* must be zero */
    };

    /*  VBI flags  */
    #define V4L2_VBI_UNSYNC         (1 << 0)
    #define V4L2_VBI_INTERLACED     (1 << 1)

    /* Sliced VBI
     *
     *    This implements is a proposal V4L2 API to allow SLICED VBI
     * required for some hardware encoders. It should change without
     * notice in the definitive implementation.
     */

    struct v4l2_sliced_vbi_format {
            __u16   service_set;
            /* service_lines[0][...] specifies lines 0-23 (1-23 used) of the first field
               service_lines[1][...] specifies lines 0-23 (1-23 used) of the second field
                                     (equals frame lines 313-336 for 625 line video
                                      standards, 263-286 for 525 line standards) */
            __u16   service_lines[2][24];
            __u32   io_size;
            __u32   reserved[2];            /* must be zero */
    };

    /* Teletext World System Teletext
       (WST), defined on ITU-R BT.653-2 */
    #define V4L2_SLICED_TELETEXT_B          (0x0001)
    /* Video Program System, defined on ETS 300 231*/
    #define V4L2_SLICED_VPS                 (0x0400)
    /* Closed Caption, defined on EIA-608 */
    #define V4L2_SLICED_CAPTION_525         (0x1000)
    /* Wide Screen System, defined on ITU-R BT1119.1 */
    #define V4L2_SLICED_WSS_625             (0x4000)

    #define V4L2_SLICED_VBI_525             (V4L2_SLICED_CAPTION_525)
    #define V4L2_SLICED_VBI_625             (V4L2_SLICED_TELETEXT_B | V4L2_SLICED_VPS | V4L2_SLICED_WSS_625)

    struct v4l2_sliced_vbi_cap {
            __u16   service_set;
            /* service_lines[0][...] specifies lines 0-23 (1-23 used) of the first field
               service_lines[1][...] specifies lines 0-23 (1-23 used) of the second field
                                     (equals frame lines 313-336 for 625 line video
                                      standards, 263-286 for 525 line standards) */
            __u16   service_lines[2][24];
            enum v4l2_buf_type type;
            __u32   reserved[3];    /* must be 0 */
    };

    struct v4l2_sliced_vbi_data {
            __u32   id;
            __u32   field;          /* 0: first field, 1: second field */
            __u32   line;           /* 1-23 */
            __u32   reserved;       /* must be 0 */
            __u8    data[48];
    };

    /*
     * Sliced VBI data inserted into MPEG Streams
     */

    /*
     * V4L2_MPEG_STREAM_VBI_FMT_IVTV:
     *
     * Structure of payload contained in an MPEG 2 Private Stream 1 PES Packet in an
     * MPEG-2 Program Pack that contains V4L2_MPEG_STREAM_VBI_FMT_IVTV Sliced VBI
     * data
     *
     * Note, the MPEG-2 Program Pack and Private Stream 1 PES packet header
     * definitions are not included here.  See the MPEG-2 specifications for details
     * on these headers.
     */

    /* Line type IDs */
    #define V4L2_MPEG_VBI_IVTV_TELETEXT_B     (1)
    #define V4L2_MPEG_VBI_IVTV_CAPTION_525    (4)
    #define V4L2_MPEG_VBI_IVTV_WSS_625        (5)
    #define V4L2_MPEG_VBI_IVTV_VPS            (7)

    struct v4l2_mpeg_vbi_itv0_line {
            __u8 id;        /* One of V4L2_MPEG_VBI_IVTV_* above */
            __u8 data[42];  /* Sliced VBI data for the line */
    } __attribute__ ((packed));

    struct v4l2_mpeg_vbi_itv0 {
            __le32 linemask[2]; /* Bitmasks of VBI service lines present */
            struct v4l2_mpeg_vbi_itv0_line line[35];
    } __attribute__ ((packed));

    struct v4l2_mpeg_vbi_ITV0 {
            struct v4l2_mpeg_vbi_itv0_line line[36];
    } __attribute__ ((packed));

    #define V4L2_MPEG_VBI_IVTV_MAGIC0       "itv0"
    #define V4L2_MPEG_VBI_IVTV_MAGIC1       "ITV0"

    struct v4l2_mpeg_vbi_fmt_ivtv {
            __u8 magic[4];
            union {
                    struct v4l2_mpeg_vbi_itv0 itv0;
                    struct v4l2_mpeg_vbi_ITV0 ITV0;
            };
    } __attribute__ ((packed));

    /*
     *      A G G R E G A T E   S T R U C T U R E S
     */

    /**
     * struct v4l2_plane_pix_format - additional, per-plane format definition
     * @sizeimage:          maximum size in bytes required for data, for which
     *                      this plane will be used
     * @bytesperline:       distance in bytes between the leftmost pixels in two
     *                      adjacent lines
     */
    struct v4l2_plane_pix_format {
            __u32           sizeimage;
            __u16           bytesperline;
            __u16           reserved[7];
    } __attribute__ ((packed));

    /**
     * struct v4l2_pix_format_mplane - multiplanar format definition
     * @width:              image width in pixels
     * @height:             image height in pixels
     * @pixelformat:        little endian four character code (fourcc)
     * @field:              field order (for interlaced video)
     * @colorspace:         supplemental to pixelformat
     * @plane_fmt:          per-plane information
     * @num_planes:         number of planes for this format
     */
    struct v4l2_pix_format_mplane {
            __u32                           width;
            __u32                           height;
            __u32                           pixelformat;
            enum v4l2_field                 field;
            enum v4l2_colorspace            colorspace;

            struct v4l2_plane_pix_format    plane_fmt[VIDEO_MAX_PLANES];
            __u8                            num_planes;
            __u8                            reserved[11];
    } __attribute__ ((packed));

    /**
     * struct v4l2_format - stream data format
     * @type:       type of the data stream
     * @pix:        definition of an image format
     * @pix_mp:     definition of a multiplanar image format
     * @win:        definition of an overlaid image
     * @vbi:        raw VBI capture or output parameters
     * @sliced:     sliced VBI capture or output parameters
     * @raw_data:   placeholder for future extensions and custom formats
     */
    struct v4l2_format {
            enum v4l2_buf_type type;
            union {
                    struct v4l2_pix_format          pix;     /* V4L2_BUF_TYPE_VIDEO_CAPTURE */
                    struct v4l2_pix_format_mplane   pix_mp;  /* V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE */
                    struct v4l2_window              win;     /* V4L2_BUF_TYPE_VIDEO_OVERLAY */
                    struct v4l2_vbi_format          vbi;     /* V4L2_BUF_TYPE_VBI_CAPTURE */
                    struct v4l2_sliced_vbi_format   sliced;  /* V4L2_BUF_TYPE_SLICED_VBI_CAPTURE */
                    __u8    raw_data[200];                   /* user-defined */
            } fmt;
    };

    /*      Stream type-dependent parameters
     */
    struct v4l2_streamparm {
            enum v4l2_buf_type type;
            union {
                    struct v4l2_captureparm capture;
                    struct v4l2_outputparm  output;
                    __u8    raw_data[200];  /* user-defined */
            } parm;
    };

    /*
     *      E V E N T S
     */

    #define V4L2_EVENT_ALL                          0
    #define V4L2_EVENT_VSYNC                        1
    #define V4L2_EVENT_EOS                          2
    #define V4L2_EVENT_PRIVATE_START                0x08000000

    /* Payload for V4L2_EVENT_VSYNC */
    struct v4l2_event_vsync {
            /* Can be V4L2_FIELD_ANY, _NONE, _TOP or _BOTTOM */
            __u8 field;
    } __attribute__ ((packed));

    struct v4l2_event {
            __u32                           type;
            union {
                    struct v4l2_event_vsync vsync;
                    __u8                    data[64];
            } u;
            __u32                           pending;
            __u32                           sequence;
            struct timespec                 timestamp;
            __u32                           reserved[9];
    };

    struct v4l2_event_subscription {
            __u32                           type;
            __u32                           reserved[7];
    };

    /*
     *      A D V A N C E D   D E B U G G I N G
     *
     *      NOTE: EXPERIMENTAL API, NEVER RELY ON THIS IN APPLICATIONS!
     *      FOR DEBUGGING, TESTING AND INTERNAL USE ONLY!
     */

    /* VIDIOC_DBG_G_REGISTER and VIDIOC_DBG_S_REGISTER */

    #define V4L2_CHIP_MATCH_HOST       0  /* Match against chip ID on host (0 for the host) */
    #define V4L2_CHIP_MATCH_I2C_DRIVER 1  /* Match against I2C driver name */
    #define V4L2_CHIP_MATCH_I2C_ADDR   2  /* Match against I2C 7-bit address */
    #define V4L2_CHIP_MATCH_AC97       3  /* Match against anciliary AC97 chip */

    struct v4l2_dbg_match {
            __u32 type; /* Match type */
            union {     /* Match this chip, meaning determined by type */
                    __u32 addr;
                    char name[32];
            };
    } __attribute__ ((packed));

    struct v4l2_dbg_register {
            struct v4l2_dbg_match match;
            __u32 size;     /* register size in bytes */
            __u64 reg;
            __u64 val;
    } __attribute__ ((packed));

    /* VIDIOC_DBG_G_CHIP_IDENT */
    struct v4l2_dbg_chip_ident {
            struct v4l2_dbg_match match;
            __u32 ident;       /* chip identifier as specified in <media/v4l2-chip-ident.h> */
            __u32 revision;    /* chip revision, chip specific */
    } __attribute__ ((packed));

    /*
     *      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
     *
     */
    #define VIDIOC_QUERYCAP          _IOR('V',  0, struct v4l2_capability)
    #define VIDIOC_RESERVED           _IO('V',  1)
    #define VIDIOC_ENUM_FMT         _IOWR('V',  2, struct v4l2_fmtdesc)
    #define VIDIOC_G_FMT            _IOWR('V',  4, struct v4l2_format)
    #define VIDIOC_S_FMT            _IOWR('V',  5, struct v4l2_format)
    #define VIDIOC_REQBUFS          _IOWR('V',  8, struct v4l2_requestbuffers)
    #define VIDIOC_QUERYBUF         _IOWR('V',  9, struct v4l2_buffer)
    #define VIDIOC_G_FBUF            _IOR('V', 10, struct v4l2_framebuffer)
    #define VIDIOC_S_FBUF            _IOW('V', 11, struct v4l2_framebuffer)
    #define VIDIOC_OVERLAY           _IOW('V', 14, int)
    #define VIDIOC_QBUF             _IOWR('V', 15, struct v4l2_buffer)
    #define VIDIOC_DQBUF            _IOWR('V', 17, struct v4l2_buffer)
    #define VIDIOC_STREAMON          _IOW('V', 18, int)
    #define VIDIOC_STREAMOFF         _IOW('V', 19, int)
    #define VIDIOC_G_PARM           _IOWR('V', 21, struct v4l2_streamparm)
    #define VIDIOC_S_PARM           _IOWR('V', 22, struct v4l2_streamparm)
    #define VIDIOC_G_STD             _IOR('V', 23, v4l2_std_id)
    #define VIDIOC_S_STD             _IOW('V', 24, v4l2_std_id)
    #define VIDIOC_ENUMSTD          _IOWR('V', 25, struct v4l2_standard)
    #define VIDIOC_ENUMINPUT        _IOWR('V', 26, struct v4l2_input)
    #define VIDIOC_G_CTRL           _IOWR('V', 27, struct v4l2_control)
    #define VIDIOC_S_CTRL           _IOWR('V', 28, struct v4l2_control)
    #define VIDIOC_G_TUNER          _IOWR('V', 29, struct v4l2_tuner)
    #define VIDIOC_S_TUNER           _IOW('V', 30, struct v4l2_tuner)
    #define VIDIOC_G_AUDIO           _IOR('V', 33, struct v4l2_audio)
    #define VIDIOC_S_AUDIO           _IOW('V', 34, struct v4l2_audio)
    #define VIDIOC_QUERYCTRL        _IOWR('V', 36, struct v4l2_queryctrl)
    #define VIDIOC_QUERYMENU        _IOWR('V', 37, struct v4l2_querymenu)
    #define VIDIOC_G_INPUT           _IOR('V', 38, int)
    #define VIDIOC_S_INPUT          _IOWR('V', 39, int)
    #define VIDIOC_G_OUTPUT          _IOR('V', 46, int)
    #define VIDIOC_S_OUTPUT         _IOWR('V', 47, int)
    #define VIDIOC_ENUMOUTPUT       _IOWR('V', 48, struct v4l2_output)
    #define VIDIOC_G_AUDOUT          _IOR('V', 49, struct v4l2_audioout)
    #define VIDIOC_S_AUDOUT          _IOW('V', 50, struct v4l2_audioout)
    #define VIDIOC_G_MODULATOR      _IOWR('V', 54, struct v4l2_modulator)
    #define VIDIOC_S_MODULATOR       _IOW('V', 55, struct v4l2_modulator)
    #define VIDIOC_G_FREQUENCY      _IOWR('V', 56, struct v4l2_frequency)
    #define VIDIOC_S_FREQUENCY       _IOW('V', 57, struct v4l2_frequency)
    #define VIDIOC_CROPCAP          _IOWR('V', 58, struct v4l2_cropcap)
    #define VIDIOC_G_CROP           _IOWR('V', 59, struct v4l2_crop)
    #define VIDIOC_S_CROP            _IOW('V', 60, struct v4l2_crop)
    #define VIDIOC_G_JPEGCOMP        _IOR('V', 61, struct v4l2_jpegcompression)
    #define VIDIOC_S_JPEGCOMP        _IOW('V', 62, struct v4l2_jpegcompression)
    #define VIDIOC_QUERYSTD          _IOR('V', 63, v4l2_std_id)
    #define VIDIOC_TRY_FMT          _IOWR('V', 64, struct v4l2_format)
    #define VIDIOC_ENUMAUDIO        _IOWR('V', 65, struct v4l2_audio)
    #define VIDIOC_ENUMAUDOUT       _IOWR('V', 66, struct v4l2_audioout)
    #define VIDIOC_G_PRIORITY        _IOR('V', 67, enum v4l2_priority)
    #define VIDIOC_S_PRIORITY        _IOW('V', 68, enum v4l2_priority)
    #define VIDIOC_G_SLICED_VBI_CAP _IOWR('V', 69, struct v4l2_sliced_vbi_cap)
    #define VIDIOC_LOG_STATUS         _IO('V', 70)
    #define VIDIOC_G_EXT_CTRLS      _IOWR('V', 71, struct v4l2_ext_controls)
    #define VIDIOC_S_EXT_CTRLS      _IOWR('V', 72, struct v4l2_ext_controls)
    #define VIDIOC_TRY_EXT_CTRLS    _IOWR('V', 73, struct v4l2_ext_controls)
    #if 1
    #define VIDIOC_ENUM_FRAMESIZES  _IOWR('V', 74, struct v4l2_frmsizeenum)
    #define VIDIOC_ENUM_FRAMEINTERVALS _IOWR('V', 75, struct v4l2_frmivalenum)
    #define VIDIOC_G_ENC_INDEX       _IOR('V', 76, struct v4l2_enc_idx)
    #define VIDIOC_ENCODER_CMD      _IOWR('V', 77, struct v4l2_encoder_cmd)
    #define VIDIOC_TRY_ENCODER_CMD  _IOWR('V', 78, struct v4l2_encoder_cmd)
    #endif

    #if 1
    /* Experimental, meant for debugging, testing and internal use.
       Only implemented if CONFIG_VIDEO_ADV_DEBUG is defined.
       You must be root to use these ioctls. Never use these in applications! */
    #define VIDIOC_DBG_S_REGISTER    _IOW('V', 79, struct v4l2_dbg_register)
    #define VIDIOC_DBG_G_REGISTER   _IOWR('V', 80, struct v4l2_dbg_register)

    /* Experimental, meant for debugging, testing and internal use.
       Never use this ioctl in applications! */
    #define VIDIOC_DBG_G_CHIP_IDENT _IOWR('V', 81, struct v4l2_dbg_chip_ident)
    #endif

    #define VIDIOC_S_HW_FREQ_SEEK    _IOW('V', 82, struct v4l2_hw_freq_seek)
    #define VIDIOC_ENUM_DV_PRESETS  _IOWR('V', 83, struct v4l2_dv_enum_preset)
    #define VIDIOC_S_DV_PRESET      _IOWR('V', 84, struct v4l2_dv_preset)
    #define VIDIOC_G_DV_PRESET      _IOWR('V', 85, struct v4l2_dv_preset)
    #define VIDIOC_QUERY_DV_PRESET  _IOR('V',  86, struct v4l2_dv_preset)
    #define VIDIOC_S_DV_TIMINGS     _IOWR('V', 87, struct v4l2_dv_timings)
    #define VIDIOC_G_DV_TIMINGS     _IOWR('V', 88, struct v4l2_dv_timings)
    #define VIDIOC_DQEVENT           _IOR('V', 89, struct v4l2_event)
    #define VIDIOC_SUBSCRIBE_EVENT   _IOW('V', 90, struct v4l2_event_subscription)
    #define VIDIOC_UNSUBSCRIBE_EVENT _IOW('V', 91, struct v4l2_event_subscription)

    /* Reminder: when adding new ioctls please add support for them to
       drivers/media/video/v4l2-compat-ioctl32.c as well! */

    #define BASE_VIDIOC_PRIVATE     192             /* 192-255 are private */

    #endif /* __LINUX_VIDEODEV2_H */