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 /* SPDX-License-Identifier: ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) */
 /*
  *  Video for Linux Two header file
  *
  *  Copyright (C) 1999-2012 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 https://linuxtv.org for more info
  *
  *  Author: Bill Dirks <bill@thedirks.org>
  *      Justin Schoeman
  *              Hans Verkuil <hverkuil@xs4all.nl>
  *      et al.
  */
 #ifndef _UAPI__LINUX_VIDEODEV2_H
 #define _UAPI__LINUX_VIDEODEV2_H
 
 #ifndef __KERNEL__
 #include <sys/time.h>
 #endif
 #include <linux/compiler.h>
 #include <linux/ioctl.h>
 #include <linux/types.h>
 #include <linux/v4l2-common.h>
 #include <linux/v4l2-controls.h>
 
 /*
  * Common stuff for both V4L1 and V4L2
  * Moved from videodev.h
  */
 #define VIDEO_MAX_FRAME               32
 #define VIDEO_MAX_PLANES               8
 
 /*
  *  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))
 #define v4l2_fourcc_be(a, b, c, d)  (v4l2_fourcc(a, b, c, d) | (1U << 31))
 
 /*
  *  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)
 #define V4L2_FIELD_HAS_T_OR_B(field)    \
     ((field) == V4L2_FIELD_BOTTOM ||\
      (field) == V4L2_FIELD_TOP ||\
      (field) == V4L2_FIELD_ALTERNATE)
 #define V4L2_FIELD_IS_INTERLACED(field) \
     ((field) == V4L2_FIELD_INTERLACED ||\
      (field) == V4L2_FIELD_INTERLACED_TB ||\
      (field) == V4L2_FIELD_INTERLACED_BT)
 #define V4L2_FIELD_IS_SEQUENTIAL(field) \
     ((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,
     V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY = 8,
     V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE = 9,
     V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE  = 10,
     V4L2_BUF_TYPE_SDR_CAPTURE          = 11,
     V4L2_BUF_TYPE_SDR_OUTPUT           = 12,
     V4L2_BUF_TYPE_META_CAPTURE         = 13,
     V4L2_BUF_TYPE_META_OUTPUT      = 14,
     /* Deprecated, do not use */
     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       \
      || (type) == V4L2_BUF_TYPE_SDR_OUTPUT          \
      || (type) == V4L2_BUF_TYPE_META_OUTPUT)
 
 #define V4L2_TYPE_IS_CAPTURE(type) (!V4L2_TYPE_IS_OUTPUT(type))
 
 enum v4l2_tuner_type {
     V4L2_TUNER_RADIO         = 1,
     V4L2_TUNER_ANALOG_TV         = 2,
     V4L2_TUNER_DIGITAL_TV        = 3,
     V4L2_TUNER_SDR               = 4,
     V4L2_TUNER_RF                = 5,
 };
 
 /* Deprecated, do not use */
 #define V4L2_TUNER_ADC  V4L2_TUNER_SDR
 
 enum v4l2_memory {
     V4L2_MEMORY_MMAP             = 1,
     V4L2_MEMORY_USERPTR          = 2,
     V4L2_MEMORY_OVERLAY          = 3,
     V4L2_MEMORY_DMABUF           = 4,
 };
 
 /* see also http://vektor.theorem.ca/graphics/ycbcr/ */
 enum v4l2_colorspace {
     /*
      * Default colorspace, i.e. let the driver figure it out.
      * Can only be used with video capture.
      */
     V4L2_COLORSPACE_DEFAULT       = 0,
 
     /* SMPTE 170M: used for broadcast NTSC/PAL SDTV */
     V4L2_COLORSPACE_SMPTE170M     = 1,
 
     /* Obsolete pre-1998 SMPTE 240M HDTV standard, superseded by Rec 709 */
     V4L2_COLORSPACE_SMPTE240M     = 2,
 
     /* Rec.709: used for HDTV */
     V4L2_COLORSPACE_REC709        = 3,
 
     /*
      * Deprecated, do not use. No driver will ever return this. This was
      * based on a misunderstanding of the bt878 datasheet.
      */
     V4L2_COLORSPACE_BT878         = 4,
 
     /*
      * NTSC 1953 colorspace. This only makes sense when dealing with
      * really, really old NTSC recordings. Superseded by SMPTE 170M.
      */
     V4L2_COLORSPACE_470_SYSTEM_M  = 5,
 
     /*
      * EBU Tech 3213 PAL/SECAM colorspace.
      */
     V4L2_COLORSPACE_470_SYSTEM_BG = 6,
 
     /*
      * Effectively shorthand for V4L2_COLORSPACE_SRGB, V4L2_YCBCR_ENC_601
      * and V4L2_QUANTIZATION_FULL_RANGE. To be used for (Motion-)JPEG.
      */
     V4L2_COLORSPACE_JPEG          = 7,
 
     /* For RGB colorspaces such as produces by most webcams. */
     V4L2_COLORSPACE_SRGB          = 8,
 
     /* opRGB colorspace */
     V4L2_COLORSPACE_OPRGB         = 9,
 
     /* BT.2020 colorspace, used for UHDTV. */
     V4L2_COLORSPACE_BT2020        = 10,
 
     /* Raw colorspace: for RAW unprocessed images */
     V4L2_COLORSPACE_RAW           = 11,
 
     /* DCI-P3 colorspace, used by cinema projectors */
     V4L2_COLORSPACE_DCI_P3        = 12,
 
 #ifdef __KERNEL__
     /*
      * Largest supported colorspace value, assigned by the compiler, used
      * by the framework to check for invalid values.
      */
     V4L2_COLORSPACE_LAST,
 #endif
 };
 
 /*
  * Determine how COLORSPACE_DEFAULT should map to a proper colorspace.
  * This depends on whether this is a SDTV image (use SMPTE 170M), an
  * HDTV image (use Rec. 709), or something else (use sRGB).
  */
 #define V4L2_MAP_COLORSPACE_DEFAULT(is_sdtv, is_hdtv) \
     ((is_sdtv) ? V4L2_COLORSPACE_SMPTE170M : \
      ((is_hdtv) ? V4L2_COLORSPACE_REC709 : V4L2_COLORSPACE_SRGB))
 
 enum v4l2_xfer_func {
     /*
      * Mapping of V4L2_XFER_FUNC_DEFAULT to actual transfer functions
      * for the various colorspaces:
      *
      * V4L2_COLORSPACE_SMPTE170M, V4L2_COLORSPACE_470_SYSTEM_M,
      * V4L2_COLORSPACE_470_SYSTEM_BG, V4L2_COLORSPACE_REC709 and
      * V4L2_COLORSPACE_BT2020: V4L2_XFER_FUNC_709
      *
      * V4L2_COLORSPACE_SRGB, V4L2_COLORSPACE_JPEG: V4L2_XFER_FUNC_SRGB
      *
      * V4L2_COLORSPACE_OPRGB: V4L2_XFER_FUNC_OPRGB
      *
      * V4L2_COLORSPACE_SMPTE240M: V4L2_XFER_FUNC_SMPTE240M
      *
      * V4L2_COLORSPACE_RAW: V4L2_XFER_FUNC_NONE
      *
      * V4L2_COLORSPACE_DCI_P3: V4L2_XFER_FUNC_DCI_P3
      */
     V4L2_XFER_FUNC_DEFAULT     = 0,
     V4L2_XFER_FUNC_709         = 1,
     V4L2_XFER_FUNC_SRGB        = 2,
     V4L2_XFER_FUNC_OPRGB       = 3,
     V4L2_XFER_FUNC_SMPTE240M   = 4,
     V4L2_XFER_FUNC_NONE        = 5,
     V4L2_XFER_FUNC_DCI_P3      = 6,
     V4L2_XFER_FUNC_SMPTE2084   = 7,
 #ifdef __KERNEL__
     /*
      * Largest supported transfer function value, assigned by the compiler,
      * used by the framework to check for invalid values.
      */
     V4L2_XFER_FUNC_LAST,
 #endif
 };
 
 /*
  * Determine how XFER_FUNC_DEFAULT should map to a proper transfer function.
  * This depends on the colorspace.
  */
 #define V4L2_MAP_XFER_FUNC_DEFAULT(colsp) \
     ((colsp) == V4L2_COLORSPACE_OPRGB ? V4L2_XFER_FUNC_OPRGB : \
      ((colsp) == V4L2_COLORSPACE_SMPTE240M ? V4L2_XFER_FUNC_SMPTE240M : \
       ((colsp) == V4L2_COLORSPACE_DCI_P3 ? V4L2_XFER_FUNC_DCI_P3 : \
        ((colsp) == V4L2_COLORSPACE_RAW ? V4L2_XFER_FUNC_NONE : \
         ((colsp) == V4L2_COLORSPACE_SRGB || (colsp) == V4L2_COLORSPACE_JPEG ? \
          V4L2_XFER_FUNC_SRGB : V4L2_XFER_FUNC_709)))))
 
 enum v4l2_ycbcr_encoding {
     /*
      * Mapping of V4L2_YCBCR_ENC_DEFAULT to actual encodings for the
      * various colorspaces:
      *
      * V4L2_COLORSPACE_SMPTE170M, V4L2_COLORSPACE_470_SYSTEM_M,
      * V4L2_COLORSPACE_470_SYSTEM_BG, V4L2_COLORSPACE_SRGB,
      * V4L2_COLORSPACE_OPRGB and V4L2_COLORSPACE_JPEG: V4L2_YCBCR_ENC_601
      *
      * V4L2_COLORSPACE_REC709 and V4L2_COLORSPACE_DCI_P3: V4L2_YCBCR_ENC_709
      *
      * V4L2_COLORSPACE_BT2020: V4L2_YCBCR_ENC_BT2020
      *
      * V4L2_COLORSPACE_SMPTE240M: V4L2_YCBCR_ENC_SMPTE240M
      */
     V4L2_YCBCR_ENC_DEFAULT        = 0,
 
     /* ITU-R 601 -- SDTV */
     V4L2_YCBCR_ENC_601            = 1,
 
     /* Rec. 709 -- HDTV */
     V4L2_YCBCR_ENC_709            = 2,
 
     /* ITU-R 601/EN 61966-2-4 Extended Gamut -- SDTV */
     V4L2_YCBCR_ENC_XV601          = 3,
 
     /* Rec. 709/EN 61966-2-4 Extended Gamut -- HDTV */
     V4L2_YCBCR_ENC_XV709          = 4,
 
 #ifndef __KERNEL__
     /*
      * sYCC (Y'CbCr encoding of sRGB), identical to ENC_601. It was added
      * originally due to a misunderstanding of the sYCC standard. It should
      * not be used, instead use V4L2_YCBCR_ENC_601.
      */
     V4L2_YCBCR_ENC_SYCC           = 5,
 #endif
 
     /* BT.2020 Non-constant Luminance Y'CbCr */
     V4L2_YCBCR_ENC_BT2020         = 6,
 
     /* BT.2020 Constant Luminance Y'CbcCrc */
     V4L2_YCBCR_ENC_BT2020_CONST_LUM = 7,
 
     /* SMPTE 240M -- Obsolete HDTV */
     V4L2_YCBCR_ENC_SMPTE240M      = 8,
 #ifdef __KERNEL__
     /*
      * Largest supported encoding value, assigned by the compiler, used by
      * the framework to check for invalid values.
      */
     V4L2_YCBCR_ENC_LAST,
 #endif
 };
 
 /*
  * enum v4l2_hsv_encoding values should not collide with the ones from
  * enum v4l2_ycbcr_encoding.
  */
 enum v4l2_hsv_encoding {
 
     /* Hue mapped to 0 - 179 */
     V4L2_HSV_ENC_180        = 128,
 
     /* Hue mapped to 0-255 */
     V4L2_HSV_ENC_256        = 129,
 };
 
 /*
  * Determine how YCBCR_ENC_DEFAULT should map to a proper Y'CbCr encoding.
  * This depends on the colorspace.
  */
 #define V4L2_MAP_YCBCR_ENC_DEFAULT(colsp) \
     (((colsp) == V4L2_COLORSPACE_REC709 || \
       (colsp) == V4L2_COLORSPACE_DCI_P3) ? V4L2_YCBCR_ENC_709 : \
      ((colsp) == V4L2_COLORSPACE_BT2020 ? V4L2_YCBCR_ENC_BT2020 : \
       ((colsp) == V4L2_COLORSPACE_SMPTE240M ? V4L2_YCBCR_ENC_SMPTE240M : \
        V4L2_YCBCR_ENC_601)))
 
 enum v4l2_quantization {
     /*
      * The default for R'G'B' quantization is always full range.
      * For Y'CbCr the quantization is always limited range, except
      * for COLORSPACE_JPEG: this is full range.
      */
     V4L2_QUANTIZATION_DEFAULT     = 0,
     V4L2_QUANTIZATION_FULL_RANGE  = 1,
     V4L2_QUANTIZATION_LIM_RANGE   = 2,
 };
 
 /*
  * Determine how QUANTIZATION_DEFAULT should map to a proper quantization.
  * This depends on whether the image is RGB or not, the colorspace.
  * The Y'CbCr encoding is not used anymore, but is still there for backwards
  * compatibility.
  */
 #define V4L2_MAP_QUANTIZATION_DEFAULT(is_rgb_or_hsv, colsp, ycbcr_enc) \
     (((is_rgb_or_hsv) || (colsp) == V4L2_COLORSPACE_JPEG) ? \
      V4L2_QUANTIZATION_FULL_RANGE : V4L2_QUANTIZATION_LIM_RANGE)
 
 /*
  * Deprecated names for opRGB colorspace (IEC 61966-2-5)
  *
  * WARNING: Please don't use these deprecated defines in your code, as
  * there is a chance we have to remove them in the future.
  */
 #ifndef __KERNEL__
 #define V4L2_COLORSPACE_ADOBERGB V4L2_COLORSPACE_OPRGB
 #define V4L2_XFER_FUNC_ADOBERGB  V4L2_XFER_FUNC_OPRGB
 #endif
 
 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;
     __u32   width;
     __u32   height;
 };
 
 struct v4l2_fract {
     __u32   numerator;
     __u32   denominator;
 };
 
 struct v4l2_area {
     __u32   width;
     __u32   height;
 };
 
 /**
   * struct v4l2_capability - Describes V4L2 device caps returned by VIDIOC_QUERYCAP
   *
   * @driver:       name of the driver module (e.g. "bttv")
   * @card:     name of the card (e.g. "Hauppauge WinTV")
   * @bus_info:     name of the bus (e.g. "PCI:" + pci_name(pci_dev) )
   * @version:      KERNEL_VERSION
   * @capabilities: capabilities of the physical device as a whole
   * @device_caps:  capabilities accessed via this particular device (node)
   * @reserved:     reserved fields for future extensions
   */
 struct v4l2_capability {
     __u8    driver[16];
     __u8    card[32];
     __u8    bus_info[32];
     __u32   version;
     __u32   capabilities;
     __u32   device_caps;
     __u32   reserved[3];
 };
 
 /* 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
 /* Is a video mem-to-mem device that supports multiplanar formats */
 #define V4L2_CAP_VIDEO_M2M_MPLANE   0x00004000
 /* Is a video mem-to-mem device */
 #define V4L2_CAP_VIDEO_M2M      0x00008000
 
 #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_SDR_CAPTURE        0x00100000  /* Is a SDR capture device */
 #define V4L2_CAP_EXT_PIX_FORMAT     0x00200000  /* Supports the extended pixel format */
 #define V4L2_CAP_SDR_OUTPUT     0x00400000  /* Is a SDR output device */
 #define V4L2_CAP_META_CAPTURE       0x00800000  /* Is a metadata capture device */
 
 #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 */
 #define V4L2_CAP_META_OUTPUT        0x08000000  /* Is a metadata output device */
 
 #define V4L2_CAP_TOUCH                  0x10000000  /* Is a touch device */
 
 #define V4L2_CAP_IO_MC          0x20000000  /* Is input/output controlled by the media controller */
 
 #define V4L2_CAP_DEVICE_CAPS            0x80000000  /* sets device capabilities field */
 
 /*
  *  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;
     __u32           field;      /* enum v4l2_field */
     __u32           bytesperline;   /* for padding, zero if unused */
     __u32           sizeimage;
     __u32           colorspace; /* enum v4l2_colorspace */
     __u32           priv;       /* private data, depends on pixelformat */
     __u32           flags;      /* format flags (V4L2_PIX_FMT_FLAG_*) */
     union {
         /* enum v4l2_ycbcr_encoding */
         __u32           ycbcr_enc;
         /* enum v4l2_hsv_encoding */
         __u32           hsv_enc;
     };
     __u32           quantization;   /* enum v4l2_quantization */
     __u32           xfer_func;  /* enum v4l2_xfer_func */
 };
 
 /*      Pixel format         FOURCC                          depth  Description  */
 
 /* RGB formats (1 or 2 bytes per pixel) */
 #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_ARGB444 v4l2_fourcc('A', 'R', '1', '2') /* 16  aaaarrrr ggggbbbb */
 #define V4L2_PIX_FMT_XRGB444 v4l2_fourcc('X', 'R', '1', '2') /* 16  xxxxrrrr ggggbbbb */
 #define V4L2_PIX_FMT_RGBA444 v4l2_fourcc('R', 'A', '1', '2') /* 16  rrrrgggg bbbbaaaa */
 #define V4L2_PIX_FMT_RGBX444 v4l2_fourcc('R', 'X', '1', '2') /* 16  rrrrgggg bbbbxxxx */
 #define V4L2_PIX_FMT_ABGR444 v4l2_fourcc('A', 'B', '1', '2') /* 16  aaaabbbb ggggrrrr */
 #define V4L2_PIX_FMT_XBGR444 v4l2_fourcc('X', 'B', '1', '2') /* 16  xxxxbbbb ggggrrrr */
 #define V4L2_PIX_FMT_BGRA444 v4l2_fourcc('G', 'A', '1', '2') /* 16  bbbbgggg rrrraaaa */
 #define V4L2_PIX_FMT_BGRX444 v4l2_fourcc('B', 'X', '1', '2') /* 16  bbbbgggg rrrrxxxx */
 #define V4L2_PIX_FMT_RGB555  v4l2_fourcc('R', 'G', 'B', 'O') /* 16  RGB-5-5-5     */
 #define V4L2_PIX_FMT_ARGB555 v4l2_fourcc('A', 'R', '1', '5') /* 16  ARGB-1-5-5-5  */
 #define V4L2_PIX_FMT_XRGB555 v4l2_fourcc('X', 'R', '1', '5') /* 16  XRGB-1-5-5-5  */
 #define V4L2_PIX_FMT_RGBA555 v4l2_fourcc('R', 'A', '1', '5') /* 16  RGBA-5-5-5-1  */
 #define V4L2_PIX_FMT_RGBX555 v4l2_fourcc('R', 'X', '1', '5') /* 16  RGBX-5-5-5-1  */
 #define V4L2_PIX_FMT_ABGR555 v4l2_fourcc('A', 'B', '1', '5') /* 16  ABGR-1-5-5-5  */
 #define V4L2_PIX_FMT_XBGR555 v4l2_fourcc('X', 'B', '1', '5') /* 16  XBGR-1-5-5-5  */
 #define V4L2_PIX_FMT_BGRA555 v4l2_fourcc('B', 'A', '1', '5') /* 16  BGRA-5-5-5-1  */
 #define V4L2_PIX_FMT_BGRX555 v4l2_fourcc('B', 'X', '1', '5') /* 16  BGRX-5-5-5-1  */
 #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_ARGB555X v4l2_fourcc_be('A', 'R', '1', '5') /* 16  ARGB-5-5-5 BE */
 #define V4L2_PIX_FMT_XRGB555X v4l2_fourcc_be('X', 'R', '1', '5') /* 16  XRGB-5-5-5 BE */
 #define V4L2_PIX_FMT_RGB565X v4l2_fourcc('R', 'G', 'B', 'R') /* 16  RGB-5-6-5 BE  */
 
 /* RGB formats (3 or 4 bytes per pixel) */
 #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_ABGR32  v4l2_fourcc('A', 'R', '2', '4') /* 32  BGRA-8-8-8-8  */
 #define V4L2_PIX_FMT_XBGR32  v4l2_fourcc('X', 'R', '2', '4') /* 32  BGRX-8-8-8-8  */
 #define V4L2_PIX_FMT_BGRA32  v4l2_fourcc('R', 'A', '2', '4') /* 32  ABGR-8-8-8-8  */
 #define V4L2_PIX_FMT_BGRX32  v4l2_fourcc('R', 'X', '2', '4') /* 32  XBGR-8-8-8-8  */
 #define V4L2_PIX_FMT_RGB32   v4l2_fourcc('R', 'G', 'B', '4') /* 32  RGB-8-8-8-8   */
 #define V4L2_PIX_FMT_RGBA32  v4l2_fourcc('A', 'B', '2', '4') /* 32  RGBA-8-8-8-8  */
 #define V4L2_PIX_FMT_RGBX32  v4l2_fourcc('X', 'B', '2', '4') /* 32  RGBX-8-8-8-8  */
 #define V4L2_PIX_FMT_ARGB32  v4l2_fourcc('B', 'A', '2', '4') /* 32  ARGB-8-8-8-8  */
 #define V4L2_PIX_FMT_XRGB32  v4l2_fourcc('B', 'X', '2', '4') /* 32  XRGB-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_Y12     v4l2_fourcc('Y', '1', '2', ' ') /* 12  Greyscale     */
 #define V4L2_PIX_FMT_Y14     v4l2_fourcc('Y', '1', '4', ' ') /* 14  Greyscale     */
 #define V4L2_PIX_FMT_Y16     v4l2_fourcc('Y', '1', '6', ' ') /* 16  Greyscale     */
 #define V4L2_PIX_FMT_Y16_BE  v4l2_fourcc_be('Y', '1', '6', ' ') /* 16  Greyscale BE  */
 
 /* Grey bit-packed formats */
 #define V4L2_PIX_FMT_Y10BPACK    v4l2_fourcc('Y', '1', '0', 'B') /* 10  Greyscale bit-packed */
 #define V4L2_PIX_FMT_Y10P    v4l2_fourcc('Y', '1', '0', 'P') /* 10  Greyscale, MIPI RAW10 packed */
 #define V4L2_PIX_FMT_IPU3_Y10       v4l2_fourcc('i', 'p', '3', 'y') /* IPU3 packed 10-bit greyscale */
 
 /* Palette formats */
 #define V4L2_PIX_FMT_PAL8    v4l2_fourcc('P', 'A', 'L', '8') /*  8  8-bit palette */
 
 /* Chrominance formats */
 #define V4L2_PIX_FMT_UV8     v4l2_fourcc('U', 'V', '8', ' ') /*  8  UV 4:4 */
 
 /* Luminance+Chrominance formats */
 #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_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_YUV24   v4l2_fourcc('Y', 'U', 'V', '3') /* 24  YUV-8-8-8     */
 #define V4L2_PIX_FMT_YUV32   v4l2_fourcc('Y', 'U', 'V', '4') /* 32  YUV-8-8-8-8   */
 #define V4L2_PIX_FMT_AYUV32  v4l2_fourcc('A', 'Y', 'U', 'V') /* 32  AYUV-8-8-8-8  */
 #define V4L2_PIX_FMT_XYUV32  v4l2_fourcc('X', 'Y', 'U', 'V') /* 32  XYUV-8-8-8-8  */
 #define V4L2_PIX_FMT_VUYA32  v4l2_fourcc('V', 'U', 'Y', 'A') /* 32  VUYA-8-8-8-8  */
 #define V4L2_PIX_FMT_VUYX32  v4l2_fourcc('V', 'U', 'Y', 'X') /* 32  VUYX-8-8-8-8  */
 #define V4L2_PIX_FMT_YUVA32  v4l2_fourcc('Y', 'U', 'V', 'A') /* 32  YUVA-8-8-8-8  */
 #define V4L2_PIX_FMT_YUVX32  v4l2_fourcc('Y', 'U', 'V', 'X') /* 32  YUVX-8-8-8-8  */
 #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  */
 #define V4L2_PIX_FMT_NV24    v4l2_fourcc('N', 'V', '2', '4') /* 24  Y/CbCr 4:4:4  */
 #define V4L2_PIX_FMT_NV42    v4l2_fourcc('N', 'V', '4', '2') /* 24  Y/CrCb 4:4:4  */
 #define V4L2_PIX_FMT_P010    v4l2_fourcc('P', '0', '1', '0') /* 24  Y/CbCr 4:2:0 10-bit per component */
 
 /* 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_NV21M   v4l2_fourcc('N', 'M', '2', '1') /* 21  Y/CrCb 4:2:0  */
 #define V4L2_PIX_FMT_NV16M   v4l2_fourcc('N', 'M', '1', '6') /* 16  Y/CbCr 4:2:2  */
 #define V4L2_PIX_FMT_NV61M   v4l2_fourcc('N', 'M', '6', '1') /* 16  Y/CrCb 4:2:2  */
 
 /* three planes - Y Cb, Cr */
 #define V4L2_PIX_FMT_YUV410  v4l2_fourcc('Y', 'U', 'V', '9') /*  9  YUV 4:1:0     */
 #define V4L2_PIX_FMT_YVU410  v4l2_fourcc('Y', 'V', 'U', '9') /*  9  YVU 4:1:0     */
 #define V4L2_PIX_FMT_YUV411P v4l2_fourcc('4', '1', '1', 'P') /* 12  YVU411 planar */
 #define V4L2_PIX_FMT_YUV420  v4l2_fourcc('Y', 'U', '1', '2') /* 12  YUV 4:2:0     */
 #define V4L2_PIX_FMT_YVU420  v4l2_fourcc('Y', 'V', '1', '2') /* 12  YVU 4:2:0     */
 #define V4L2_PIX_FMT_YUV422P v4l2_fourcc('4', '2', '2', 'P') /* 16  YVU422 planar */
 
 /* three non contiguous planes - Y, Cb, Cr */
 #define V4L2_PIX_FMT_YUV420M v4l2_fourcc('Y', 'M', '1', '2') /* 12  YUV420 planar */
 #define V4L2_PIX_FMT_YVU420M v4l2_fourcc('Y', 'M', '2', '1') /* 12  YVU420 planar */
 #define V4L2_PIX_FMT_YUV422M v4l2_fourcc('Y', 'M', '1', '6') /* 16  YUV422 planar */
 #define V4L2_PIX_FMT_YVU422M v4l2_fourcc('Y', 'M', '6', '1') /* 16  YVU422 planar */
 #define V4L2_PIX_FMT_YUV444M v4l2_fourcc('Y', 'M', '2', '4') /* 24  YUV444 planar */
 #define V4L2_PIX_FMT_YVU444M v4l2_fourcc('Y', 'M', '4', '2') /* 24  YVU444 planar */
 
 /* Tiled YUV formats */
 #define V4L2_PIX_FMT_NV12_4L4 v4l2_fourcc('V', 'T', '1', '2')   /* 12  Y/CbCr 4:2:0  4x4 tiles */
 #define V4L2_PIX_FMT_NV12_16L16 v4l2_fourcc('H', 'M', '1', '2') /* 12  Y/CbCr 4:2:0 16x16 tiles */
 #define V4L2_PIX_FMT_NV12_32L32 v4l2_fourcc('S', 'T', '1', '2') /* 12  Y/CbCr 4:2:0 32x32 tiles */
 #define V4L2_PIX_FMT_P010_4L4 v4l2_fourcc('T', '0', '1', '0') /* 12  Y/CbCr 4:2:0 10-bit 4x4 macroblocks */
 
 /* Tiled YUV formats, non contiguous planes */
 #define V4L2_PIX_FMT_NV12MT  v4l2_fourcc('T', 'M', '1', '2') /* 12  Y/CbCr 4:2:0 64x32 tiles */
 #define V4L2_PIX_FMT_NV12MT_16X16 v4l2_fourcc('V', 'M', '1', '2') /* 12  Y/CbCr 4:2:0 16x16 tiles */
 #define V4L2_PIX_FMT_NV12M_8L128      v4l2_fourcc('N', 'A', '1', '2') /* Y/CbCr 4:2:0 8x128 tiles */
 #define V4L2_PIX_FMT_NV12M_10BE_8L128 v4l2_fourcc_be('N', 'T', '1', '2') /* Y/CbCr 4:2:0 10-bit 8x128 tiles */
 
 /* 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 packed, 5 bytes for every 4 pixels */
 #define V4L2_PIX_FMT_SBGGR10P v4l2_fourcc('p', 'B', 'A', 'A')
 #define V4L2_PIX_FMT_SGBRG10P v4l2_fourcc('p', 'G', 'A', 'A')
 #define V4L2_PIX_FMT_SGRBG10P v4l2_fourcc('p', 'g', 'A', 'A')
 #define V4L2_PIX_FMT_SRGGB10P v4l2_fourcc('p', 'R', 'A', 'A')
     /* 10bit raw bayer a-law compressed to 8 bits */
 #define V4L2_PIX_FMT_SBGGR10ALAW8 v4l2_fourcc('a', 'B', 'A', '8')
 #define V4L2_PIX_FMT_SGBRG10ALAW8 v4l2_fourcc('a', 'G', 'A', '8')
 #define V4L2_PIX_FMT_SGRBG10ALAW8 v4l2_fourcc('a', 'g', 'A', '8')
 #define V4L2_PIX_FMT_SRGGB10ALAW8 v4l2_fourcc('a', 'R', 'A', '8')
     /* 10bit raw bayer DPCM compressed to 8 bits */
 #define V4L2_PIX_FMT_SBGGR10DPCM8 v4l2_fourcc('b', 'B', 'A', '8')
 #define V4L2_PIX_FMT_SGBRG10DPCM8 v4l2_fourcc('b', 'G', 'A', '8')
 #define V4L2_PIX_FMT_SGRBG10DPCM8 v4l2_fourcc('B', 'D', '1', '0')
 #define V4L2_PIX_FMT_SRGGB10DPCM8 v4l2_fourcc('b', 'R', 'A', '8')
 #define V4L2_PIX_FMT_SBGGR12 v4l2_fourcc('B', 'G', '1', '2') /* 12  BGBG.. GRGR.. */
 #define V4L2_PIX_FMT_SGBRG12 v4l2_fourcc('G', 'B', '1', '2') /* 12  GBGB.. RGRG.. */
 #define V4L2_PIX_FMT_SGRBG12 v4l2_fourcc('B', 'A', '1', '2') /* 12  GRGR.. BGBG.. */
 #define V4L2_PIX_FMT_SRGGB12 v4l2_fourcc('R', 'G', '1', '2') /* 12  RGRG.. GBGB.. */
     /* 12bit raw bayer packed, 6 bytes for every 4 pixels */
 #define V4L2_PIX_FMT_SBGGR12P v4l2_fourcc('p', 'B', 'C', 'C')
 #define V4L2_PIX_FMT_SGBRG12P v4l2_fourcc('p', 'G', 'C', 'C')
 #define V4L2_PIX_FMT_SGRBG12P v4l2_fourcc('p', 'g', 'C', 'C')
 #define V4L2_PIX_FMT_SRGGB12P v4l2_fourcc('p', 'R', 'C', 'C')
 #define V4L2_PIX_FMT_SBGGR14 v4l2_fourcc('B', 'G', '1', '4') /* 14  BGBG.. GRGR.. */
 #define V4L2_PIX_FMT_SGBRG14 v4l2_fourcc('G', 'B', '1', '4') /* 14  GBGB.. RGRG.. */
 #define V4L2_PIX_FMT_SGRBG14 v4l2_fourcc('G', 'R', '1', '4') /* 14  GRGR.. BGBG.. */
 #define V4L2_PIX_FMT_SRGGB14 v4l2_fourcc('R', 'G', '1', '4') /* 14  RGRG.. GBGB.. */
     /* 14bit raw bayer packed, 7 bytes for every 4 pixels */
 #define V4L2_PIX_FMT_SBGGR14P v4l2_fourcc('p', 'B', 'E', 'E')
 #define V4L2_PIX_FMT_SGBRG14P v4l2_fourcc('p', 'G', 'E', 'E')
 #define V4L2_PIX_FMT_SGRBG14P v4l2_fourcc('p', 'g', 'E', 'E')
 #define V4L2_PIX_FMT_SRGGB14P v4l2_fourcc('p', 'R', 'E', 'E')
 #define V4L2_PIX_FMT_SBGGR16 v4l2_fourcc('B', 'Y', 'R', '2') /* 16  BGBG.. GRGR.. */
 #define V4L2_PIX_FMT_SGBRG16 v4l2_fourcc('G', 'B', '1', '6') /* 16  GBGB.. RGRG.. */
 #define V4L2_PIX_FMT_SGRBG16 v4l2_fourcc('G', 'R', '1', '6') /* 16  GRGR.. BGBG.. */
 #define V4L2_PIX_FMT_SRGGB16 v4l2_fourcc('R', 'G', '1', '6') /* 16  RGRG.. GBGB.. */
 
 /* HSV formats */
 #define V4L2_PIX_FMT_HSV24 v4l2_fourcc('H', 'S', 'V', '3')
 #define V4L2_PIX_FMT_HSV32 v4l2_fourcc('H', 'S', 'V', '4')
 
 /* 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 Multiplexed */
 #define V4L2_PIX_FMT_H264     v4l2_fourcc('H', '2', '6', '4') /* H264 with start codes */
 #define V4L2_PIX_FMT_H264_NO_SC v4l2_fourcc('A', 'V', 'C', '1') /* H264 without start codes */
 #define V4L2_PIX_FMT_H264_MVC v4l2_fourcc('M', '2', '6', '4') /* H264 MVC */
 #define V4L2_PIX_FMT_H263     v4l2_fourcc('H', '2', '6', '3') /* H263          */
 #define V4L2_PIX_FMT_MPEG1    v4l2_fourcc('M', 'P', 'G', '1') /* MPEG-1 ES     */
 #define V4L2_PIX_FMT_MPEG2    v4l2_fourcc('M', 'P', 'G', '2') /* MPEG-2 ES     */
 #define V4L2_PIX_FMT_MPEG2_SLICE v4l2_fourcc('M', 'G', '2', 'S') /* MPEG-2 parsed slice data */
 #define V4L2_PIX_FMT_MPEG4    v4l2_fourcc('M', 'P', 'G', '4') /* MPEG-4 part 2 ES */
 #define V4L2_PIX_FMT_XVID     v4l2_fourcc('X', 'V', 'I', 'D') /* Xvid           */
 #define V4L2_PIX_FMT_VC1_ANNEX_G v4l2_fourcc('V', 'C', '1', 'G') /* SMPTE 421M Annex G compliant stream */
 #define V4L2_PIX_FMT_VC1_ANNEX_L v4l2_fourcc('V', 'C', '1', 'L') /* SMPTE 421M Annex L compliant stream */
 #define V4L2_PIX_FMT_VP8      v4l2_fourcc('V', 'P', '8', '0') /* VP8 */
 #define V4L2_PIX_FMT_VP8_FRAME v4l2_fourcc('V', 'P', '8', 'F') /* VP8 parsed frame */
 #define V4L2_PIX_FMT_VP9      v4l2_fourcc('V', 'P', '9', '0') /* VP9 */
 #define V4L2_PIX_FMT_VP9_FRAME v4l2_fourcc('V', 'P', '9', 'F') /* VP9 parsed frame */
 #define V4L2_PIX_FMT_HEVC     v4l2_fourcc('H', 'E', 'V', 'C') /* HEVC aka H.265 */
 #define V4L2_PIX_FMT_FWHT     v4l2_fourcc('F', 'W', 'H', 'T') /* Fast Walsh Hadamard Transform (vicodec) */
 #define V4L2_PIX_FMT_FWHT_STATELESS     v4l2_fourcc('S', 'F', 'W', 'H') /* Stateless FWHT (vicodec) */
 #define V4L2_PIX_FMT_H264_SLICE v4l2_fourcc('S', '2', '6', '4') /* H264 parsed slices */
 #define V4L2_PIX_FMT_HEVC_SLICE v4l2_fourcc('S', '2', '6', '5') /* HEVC parsed slices */
 
 /*  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_JL2005BCD v4l2_fourcc('J', 'L', '2', '0') /* compressed RGGB 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 */
 #define V4L2_PIX_FMT_JPGL   v4l2_fourcc('J', 'P', 'G', 'L') /* JPEG-Lite */
 #define V4L2_PIX_FMT_SE401      v4l2_fourcc('S', '4', '0', '1') /* se401 janggu compressed rgb */
 #define V4L2_PIX_FMT_S5C_UYVY_JPG v4l2_fourcc('S', '5', 'C', 'I') /* S5C73M3 interleaved UYVY/JPEG */
 #define V4L2_PIX_FMT_Y8I      v4l2_fourcc('Y', '8', 'I', ' ') /* Greyscale 8-bit L/R interleaved */
 #define V4L2_PIX_FMT_Y12I     v4l2_fourcc('Y', '1', '2', 'I') /* Greyscale 12-bit L/R interleaved */
 #define V4L2_PIX_FMT_Z16      v4l2_fourcc('Z', '1', '6', ' ') /* Depth data 16-bit */
 #define V4L2_PIX_FMT_MT21C    v4l2_fourcc('M', 'T', '2', '1') /* Mediatek compressed block mode  */
 #define V4L2_PIX_FMT_MM21     v4l2_fourcc('M', 'M', '2', '1') /* Mediatek 8-bit block mode, two non-contiguous planes */
 #define V4L2_PIX_FMT_INZI     v4l2_fourcc('I', 'N', 'Z', 'I') /* Intel Planar Greyscale 10-bit and Depth 16-bit */
 #define V4L2_PIX_FMT_CNF4     v4l2_fourcc('C', 'N', 'F', '4') /* Intel 4-bit packed depth confidence information */
 #define V4L2_PIX_FMT_HI240    v4l2_fourcc('H', 'I', '2', '4') /* BTTV 8-bit dithered RGB */
 #define V4L2_PIX_FMT_QC08C    v4l2_fourcc('Q', '0', '8', 'C') /* Qualcomm 8-bit compressed */
 #define V4L2_PIX_FMT_QC10C    v4l2_fourcc('Q', '1', '0', 'C') /* Qualcomm 10-bit compressed */
 
 /* 10bit raw packed, 32 bytes for every 25 pixels, last LSB 6 bits unused */
 #define V4L2_PIX_FMT_IPU3_SBGGR10   v4l2_fourcc('i', 'p', '3', 'b') /* IPU3 packed 10-bit BGGR bayer */
 #define V4L2_PIX_FMT_IPU3_SGBRG10   v4l2_fourcc('i', 'p', '3', 'g') /* IPU3 packed 10-bit GBRG bayer */
 #define V4L2_PIX_FMT_IPU3_SGRBG10   v4l2_fourcc('i', 'p', '3', 'G') /* IPU3 packed 10-bit GRBG bayer */
 #define V4L2_PIX_FMT_IPU3_SRGGB10   v4l2_fourcc('i', 'p', '3', 'r') /* IPU3 packed 10-bit RGGB bayer */
 
 /* SDR formats - used only for Software Defined Radio devices */
 #define V4L2_SDR_FMT_CU8          v4l2_fourcc('C', 'U', '0', '8') /* IQ u8 */
 #define V4L2_SDR_FMT_CU16LE       v4l2_fourcc('C', 'U', '1', '6') /* IQ u16le */
 #define V4L2_SDR_FMT_CS8          v4l2_fourcc('C', 'S', '0', '8') /* complex s8 */
 #define V4L2_SDR_FMT_CS14LE       v4l2_fourcc('C', 'S', '1', '4') /* complex s14le */
 #define V4L2_SDR_FMT_RU12LE       v4l2_fourcc('R', 'U', '1', '2') /* real u12le */
 #define V4L2_SDR_FMT_PCU16BE      v4l2_fourcc('P', 'C', '1', '6') /* planar complex u16be */
 #define V4L2_SDR_FMT_PCU18BE      v4l2_fourcc('P', 'C', '1', '8') /* planar complex u18be */
 #define V4L2_SDR_FMT_PCU20BE      v4l2_fourcc('P', 'C', '2', '0') /* planar complex u20be */
 
 /* Touch formats - used for Touch devices */
 #define V4L2_TCH_FMT_DELTA_TD16 v4l2_fourcc('T', 'D', '1', '6') /* 16-bit signed deltas */
 #define V4L2_TCH_FMT_DELTA_TD08 v4l2_fourcc('T', 'D', '0', '8') /* 8-bit signed deltas */
 #define V4L2_TCH_FMT_TU16   v4l2_fourcc('T', 'U', '1', '6') /* 16-bit unsigned touch data */
 #define V4L2_TCH_FMT_TU08   v4l2_fourcc('T', 'U', '0', '8') /* 8-bit unsigned touch data */
 
 /* Meta-data formats */
 #define V4L2_META_FMT_VSP1_HGO    v4l2_fourcc('V', 'S', 'P', 'H') /* R-Car VSP1 1-D Histogram */
 #define V4L2_META_FMT_VSP1_HGT    v4l2_fourcc('V', 'S', 'P', 'T') /* R-Car VSP1 2-D Histogram */
 #define V4L2_META_FMT_UVC         v4l2_fourcc('U', 'V', 'C', 'H') /* UVC Payload Header metadata */
 #define V4L2_META_FMT_D4XX        v4l2_fourcc('D', '4', 'X', 'X') /* D4XX Payload Header metadata */
 #define V4L2_META_FMT_VIVID   v4l2_fourcc('V', 'I', 'V', 'D') /* Vivid Metadata */
 
 /* Vendor specific - used for RK_ISP1 camera sub-system */
 #define V4L2_META_FMT_RK_ISP1_PARAMS    v4l2_fourcc('R', 'K', '1', 'P') /* Rockchip ISP1 3A Parameters */
 #define V4L2_META_FMT_RK_ISP1_STAT_3A   v4l2_fourcc('R', 'K', '1', 'S') /* Rockchip ISP1 3A Statistics */
 
 /* priv field value to indicates that subsequent fields are valid. */
 #define V4L2_PIX_FMT_PRIV_MAGIC     0xfeedcafe
 
 /* Flags */
 #define V4L2_PIX_FMT_FLAG_PREMUL_ALPHA  0x00000001
 #define V4L2_PIX_FMT_FLAG_SET_CSC   0x00000002
 
 /*
  *  F O R M A T   E N U M E R A T I O N
  */
 struct v4l2_fmtdesc {
     __u32           index;             /* Format number      */
     __u32           type;              /* enum v4l2_buf_type */
     __u32               flags;
     __u8            description[32];   /* Description string */
     __u32           pixelformat;       /* Format fourcc      */
     __u32           mbus_code;      /* Media bus code    */
     __u32           reserved[3];
 };
 
 #define V4L2_FMT_FLAG_COMPRESSED        0x0001
 #define V4L2_FMT_FLAG_EMULATED          0x0002
 #define V4L2_FMT_FLAG_CONTINUOUS_BYTESTREAM 0x0004
 #define V4L2_FMT_FLAG_DYN_RESOLUTION        0x0008
 #define V4L2_FMT_FLAG_ENC_CAP_FRAME_INTERVAL    0x0010
 #define V4L2_FMT_FLAG_CSC_COLORSPACE        0x0020
 #define V4L2_FMT_FLAG_CSC_XFER_FUNC     0x0040
 #define V4L2_FMT_FLAG_CSC_YCBCR_ENC     0x0080
 #define V4L2_FMT_FLAG_CSC_HSV_ENC       V4L2_FMT_FLAG_CSC_YCBCR_ENC
 #define V4L2_FMT_FLAG_CSC_QUANTIZATION      0x0100
 
     /* 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 */
 };
 
 /*
  *  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.
                  * Including 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
                     * always use APP0 */
 };
 
 /*
  *  M E M O R Y - M A P P I N G   B U F F E R S
  */
 
 #ifdef __KERNEL__
 /*
  * This corresponds to the user space version of timeval
  * for 64-bit time_t. sparc64 is different from everyone
  * else, using the microseconds in the wrong half of the
  * second 64-bit word.
  */
 struct __kernel_v4l2_timeval {
     long long   tv_sec;
 #if defined(__sparc__) && defined(__arch64__)
     int     tv_usec;
     int     __pad;
 #else
     long long   tv_usec;
 #endif
 };
 #endif
 
 struct v4l2_requestbuffers {
     __u32           count;
     __u32           type;       /* enum v4l2_buf_type */
     __u32           memory;     /* enum v4l2_memory */
     __u32           capabilities;
     __u8            flags;
     __u8            reserved[3];
 };
 
 #define V4L2_MEMORY_FLAG_NON_COHERENT           (1 << 0)
 
 /* capabilities for struct v4l2_requestbuffers and v4l2_create_buffers */
 #define V4L2_BUF_CAP_SUPPORTS_MMAP          (1 << 0)
 #define V4L2_BUF_CAP_SUPPORTS_USERPTR           (1 << 1)
 #define V4L2_BUF_CAP_SUPPORTS_DMABUF            (1 << 2)
 #define V4L2_BUF_CAP_SUPPORTS_REQUESTS          (1 << 3)
 #define V4L2_BUF_CAP_SUPPORTS_ORPHANED_BUFS     (1 << 4)
 #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF  (1 << 5)
 #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS      (1 << 6)
 
 /**
  * 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
  * @fd:         when memory is V4L2_MEMORY_DMABUF, a userspace file
  *          descriptor associated with this plane
  * @m:          union of @mem_offset, @userptr and @fd
  * @data_offset:    offset in the plane to the start of data; usually 0,
  *          unless there is a header in front of the data
  * @reserved:       drivers and applications must zero this array
  *
  * 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;
         __s32       fd;
     } m;
     __u32           data_offset;
     __u32           reserved[11];
 };
 
 /**
  * struct v4l2_buffer - video buffer info
  * @index:  id number of the buffer
  * @type:   enum v4l2_buf_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:  enum v4l2_field; field order of the image in the buffer
  * @timestamp:  frame timestamp
  * @timecode:   frame timecode
  * @sequence:   sequence count of this frame
  * @memory: enum v4l2_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
  * @fd:     for non-multiplanar buffers with memory == V4L2_MEMORY_DMABUF;
  *      a userspace file descriptor associated with this buffer
  * @planes: for multiplanar buffers; userspace pointer to the array of plane
  *      info structs for this buffer
  * @m:      union of @offset, @userptr, @planes and @fd
  * @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
  * @reserved2:  drivers and applications must zero this field
  * @request_fd: fd of the request that this buffer should use
  * @reserved:   for backwards compatibility with applications that do not know
  *      about @request_fd
  *
  * Contains data exchanged by application and driver using one of the Streaming
  * I/O methods.
  */
 struct v4l2_buffer {
     __u32           index;
     __u32           type;
     __u32           bytesused;
     __u32           flags;
     __u32           field;
 #ifdef __KERNEL__
     struct __kernel_v4l2_timeval timestamp;
 #else
     struct timeval      timestamp;
 #endif
     struct v4l2_timecode    timecode;
     __u32           sequence;
 
     /* memory location */
     __u32           memory;
     union {
         __u32           offset;
         unsigned long   userptr;
         struct v4l2_plane *planes;
         __s32       fd;
     } m;
     __u32           length;
     __u32           reserved2;
     union {
         __s32       request_fd;
         __u32       reserved;
     };
 };
 
 #ifndef __KERNEL__
 /**
  * v4l2_timeval_to_ns - Convert timeval to nanoseconds
  * @tv:     pointer to the timeval variable to be converted
  *
  * Returns the scalar nanosecond representation of the timeval
  * parameter.
  */
 static inline __u64 v4l2_timeval_to_ns(const struct timeval *tv)
 {
     return (__u64)tv->tv_sec * 1000000000ULL + tv->tv_usec * 1000;
 }
 #endif
 
 /*  Flags for 'flags' field */
 /* Buffer is mapped (flag) */
 #define V4L2_BUF_FLAG_MAPPED            0x00000001
 /* Buffer is queued for processing */
 #define V4L2_BUF_FLAG_QUEUED            0x00000002
 /* Buffer is ready */
 #define V4L2_BUF_FLAG_DONE          0x00000004
 /* Image is a keyframe (I-frame) */
 #define V4L2_BUF_FLAG_KEYFRAME          0x00000008
 /* Image is a P-frame */
 #define V4L2_BUF_FLAG_PFRAME            0x00000010
 /* Image is a B-frame */
 #define V4L2_BUF_FLAG_BFRAME            0x00000020
 /* Buffer is ready, but the data contained within is corrupted. */
 #define V4L2_BUF_FLAG_ERROR         0x00000040
 /* Buffer is added to an unqueued request */
 #define V4L2_BUF_FLAG_IN_REQUEST        0x00000080
 /* timecode field is valid */
 #define V4L2_BUF_FLAG_TIMECODE          0x00000100
 /* Don't return the capture buffer until OUTPUT timestamp changes */
 #define V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF  0x00000200
 /* Buffer is prepared for queuing */
 #define V4L2_BUF_FLAG_PREPARED          0x00000400
 /* Cache handling flags */
 #define V4L2_BUF_FLAG_NO_CACHE_INVALIDATE   0x00000800
 #define V4L2_BUF_FLAG_NO_CACHE_CLEAN        0x00001000
 /* Timestamp type */
 #define V4L2_BUF_FLAG_TIMESTAMP_MASK        0x0000e000
 #define V4L2_BUF_FLAG_TIMESTAMP_UNKNOWN     0x00000000
 #define V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC   0x00002000
 #define V4L2_BUF_FLAG_TIMESTAMP_COPY        0x00004000
 /* Timestamp sources. */
 #define V4L2_BUF_FLAG_TSTAMP_SRC_MASK       0x00070000
 #define V4L2_BUF_FLAG_TSTAMP_SRC_EOF        0x00000000
 #define V4L2_BUF_FLAG_TSTAMP_SRC_SOE        0x00010000
 /* mem2mem encoder/decoder */
 #define V4L2_BUF_FLAG_LAST          0x00100000
 /* request_fd is valid */
 #define V4L2_BUF_FLAG_REQUEST_FD        0x00800000
 
 /**
  * struct v4l2_exportbuffer - export of video buffer as DMABUF file descriptor
  *
  * @index:  id number of the buffer
  * @type:   enum v4l2_buf_type; buffer type (type == *_MPLANE for
  *      multiplanar buffers);
  * @plane:  index of the plane to be exported, 0 for single plane queues
  * @flags:  flags for newly created file, currently only O_CLOEXEC is
  *      supported, refer to manual of open syscall for more details
  * @fd:     file descriptor associated with DMABUF (set by driver)
  * @reserved:   drivers and applications must zero this array
  *
  * Contains data used for exporting a video buffer as DMABUF file descriptor.
  * The buffer is identified by a 'cookie' returned by VIDIOC_QUERYBUF
  * (identical to the cookie used to mmap() the buffer to userspace). All
  * reserved fields must be set to zero. The field reserved0 is expected to
  * become a structure 'type' allowing an alternative layout of the structure
  * content. Therefore this field should not be used for any other extensions.
  */
 struct v4l2_exportbuffer {
     __u32       type; /* enum v4l2_buf_type */
     __u32       index;
     __u32       plane;
     __u32       flags;
     __s32       fd;
     __u32       reserved[11];
 };
 
 /*
  *  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 {
         __u32       width;
         __u32       height;
         __u32       pixelformat;
         __u32       field;      /* enum v4l2_field */
         __u32       bytesperline;   /* for padding, zero if unused */
         __u32       sizeimage;
         __u32       colorspace; /* enum v4l2_colorspace */
         __u32       priv;       /* reserved field, set to 0 */
     } 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;
     __u32           field;   /* enum v4l2_field */
     __u32           chromakey;
     struct v4l2_clip    *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 seconds */
     __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 {
     __u32           type;   /* enum v4l2_buf_type */
     struct v4l2_rect        bounds;
     struct v4l2_rect        defrect;
     struct v4l2_fract       pixelaspect;
 };
 
 struct v4l2_crop {
     __u32           type;   /* enum v4l2_buf_type */
     struct v4l2_rect        c;
 };
 
 /**
  * struct v4l2_selection - selection info
  * @type:   buffer type (do not use *_MPLANE types)
  * @target: Selection target, used to choose one of possible rectangles;
  *      defined in v4l2-common.h; V4L2_SEL_TGT_* .
  * @flags:  constraints flags, defined in v4l2-common.h; V4L2_SEL_FLAG_*.
  * @r:      coordinates of selection window
  * @reserved:   for future use, rounds structure size to 64 bytes, set to zero
  *
  * Hardware may use multiple helper windows to process a video stream.
  * The structure is used to exchange this selection areas between
  * an application and a driver.
  */
 struct v4l2_selection {
     __u32           type;
     __u32           target;
     __u32                   flags;
     struct v4l2_rect        r;
     __u32                   reserved[9];
 };
 
 
 /*
  *      A N A L O G   V I D E O   S T A N D A R D
  */
 
 typedef __u64 v4l2_std_id;
 
 /*
  * Attention: Keep the V4L2_STD_* bit definitions in sync with
  * include/dt-bindings/display/sdtv-standards.h SDTV_STD_* bit definitions.
  */
 /* 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)   /* BTSC */
 #define V4L2_STD_NTSC_M_JP      ((v4l2_std_id)0x00002000)   /* EIA-J */
 #define V4L2_STD_NTSC_443       ((v4l2_std_id)0x00004000)
 #define V4L2_STD_NTSC_M_KR      ((v4l2_std_id)0x00008000)   /* FM A2 */
 
 #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 macros to merge video standards in order to make live easier for the
  * drivers and V4L2 applications
  */
 
 /*
  * "Common" NTSC/M - It should be noticed that V4L2_STD_NTSC_443 is
  * Missing here.
  */
 #define V4L2_STD_NTSC           (V4L2_STD_NTSC_M    |\
                  V4L2_STD_NTSC_M_JP     |\
                  V4L2_STD_NTSC_M_KR)
 /* Secam macros */
 #define V4L2_STD_SECAM_DK   (V4L2_STD_SECAM_D   |\
                  V4L2_STD_SECAM_K   |\
                  V4L2_STD_SECAM_K1)
 /* All Secam Standards */
 #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)
 /* PAL macros */
 #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)
 /*
  * "Common" PAL - This macro is there to be compatible with the old
  * V4L1 concept of "PAL": /BGDKHI.
  * Several PAL standards are missing here: /M, /N and /Nc
  */
 #define V4L2_STD_PAL        (V4L2_STD_PAL_BG    |\
                  V4L2_STD_PAL_DK    |\
                  V4L2_STD_PAL_H     |\
                  V4L2_STD_PAL_I)
 /* Chroma "agnostic" standards */
 #define V4L2_STD_B      (V4L2_STD_PAL_B     |\
                  V4L2_STD_PAL_B1    |\
                  V4L2_STD_SECAM_B)
 #define V4L2_STD_G      (V4L2_STD_PAL_G     |\
                  V4L2_STD_SECAM_G)
 #define V4L2_STD_H      (V4L2_STD_PAL_H     |\
                  V4L2_STD_SECAM_H)
 #define V4L2_STD_L      (V4L2_STD_SECAM_L   |\
                  V4L2_STD_SECAM_LC)
 #define V4L2_STD_GH     (V4L2_STD_G     |\
                  V4L2_STD_H)
 #define V4L2_STD_DK     (V4L2_STD_PAL_DK    |\
                  V4L2_STD_SECAM_DK)
 #define V4L2_STD_BG     (V4L2_STD_B     |\
                  V4L2_STD_G)
 #define V4L2_STD_MN     (V4L2_STD_PAL_M     |\
                  V4L2_STD_PAL_N     |\
                  V4L2_STD_PAL_Nc    |\
                  V4L2_STD_NTSC)
 
 /* Standards where MTS/BTSC stereo could be found */
 #define V4L2_STD_MTS        (V4L2_STD_NTSC_M    |\
                  V4L2_STD_PAL_M     |\
                  V4L2_STD_PAL_N     |\
                  V4L2_STD_PAL_Nc)
 
 /* Standards for Countries with 60Hz Line frequency */
 #define V4L2_STD_525_60     (V4L2_STD_PAL_M     |\
                  V4L2_STD_PAL_60    |\
                  V4L2_STD_NTSC      |\
                  V4L2_STD_NTSC_443)
 /* Standards for Countries with 50Hz Line frequency */
 #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)
 /* Macros with none and all analog standards */
 #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];
 };
 
 /*
  *  D V B T T I M I N G S
  */
 
 /** struct v4l2_bt_timings - BT.656/BT.1120 timing data
  * @width:  total width of the active video in pixels
  * @height: total height of the active video in lines
  * @interlaced: Interlaced or progressive
  * @polarities: Positive or negative polarities
  * @pixelclock: Pixel clock in HZ. Ex. 74.25MHz->74250000
  * @hfrontporch:Horizontal front porch in pixels
  * @hsync:  Horizontal Sync length in pixels
  * @hbackporch: Horizontal back porch in pixels
  * @vfrontporch:Vertical front porch in lines
  * @vsync:  Vertical Sync length in lines
  * @vbackporch: Vertical back porch in lines
  * @il_vfrontporch:Vertical front porch for the even field
  *      (aka field 2) of interlaced field formats
  * @il_vsync:   Vertical Sync length for the even field
  *      (aka field 2) of interlaced field formats
  * @il_vbackporch:Vertical back porch for the even field
  *      (aka field 2) of interlaced field formats
  * @standards:  Standards the timing belongs to
  * @flags:  Flags
  * @picture_aspect: The picture aspect ratio (hor/vert).
  * @cea861_vic: VIC code as per the CEA-861 standard.
  * @hdmi_vic:   VIC code as per the HDMI standard.
  * @reserved:   Reserved fields, must be zeroed.
  *
  * A note regarding vertical interlaced timings: height refers to the total
  * height of the active video frame (= two fields). The blanking timings refer
  * to the blanking of each field. So the height of the total frame is
  * calculated as follows:
  *
  * tot_height = height + vfrontporch + vsync + vbackporch +
  *                       il_vfrontporch + il_vsync + il_vbackporch
  *
  * The active height of each field is height / 2.
  */
 struct v4l2_bt_timings {
     __u32   width;
     __u32   height;
     __u32   interlaced;
     __u32   polarities;
     __u64   pixelclock;
     __u32   hfrontporch;
     __u32   hsync;
     __u32   hbackporch;
     __u32   vfrontporch;
     __u32   vsync;
     __u32   vbackporch;
     __u32   il_vfrontporch;
     __u32   il_vsync;
     __u32   il_vbackporch;
     __u32   standards;
     __u32   flags;
     struct v4l2_fract picture_aspect;
     __u8    cea861_vic;
     __u8    hdmi_vic;
     __u8    reserved[46];
 } __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
 
 /* Timings standards */
 #define V4L2_DV_BT_STD_CEA861   (1 << 0)  /* CEA-861 Digital TV Profile */
 #define V4L2_DV_BT_STD_DMT  (1 << 1)  /* VESA Discrete Monitor Timings */
 #define V4L2_DV_BT_STD_CVT  (1 << 2)  /* VESA Coordinated Video Timings */
 #define V4L2_DV_BT_STD_GTF  (1 << 3)  /* VESA Generalized Timings Formula */
 #define V4L2_DV_BT_STD_SDI  (1 << 4)  /* SDI Timings */
 
 /* Flags */
 
 /*
  * CVT/GTF specific: timing uses reduced blanking (CVT) or the 'Secondary
  * GTF' curve (GTF). In both cases the horizontal and/or vertical blanking
  * intervals are reduced, allowing a higher resolution over the same
  * bandwidth. This is a read-only flag.
  */
 #define V4L2_DV_FL_REDUCED_BLANKING     (1 << 0)
 /*
  * CEA-861 specific: set for CEA-861 formats with a framerate of a multiple
  * of six. These formats can be optionally played at 1 / 1.001 speed.
  * This is a read-only flag.
  */
 #define V4L2_DV_FL_CAN_REDUCE_FPS       (1 << 1)
 /*
  * CEA-861 specific: only valid for video transmitters, the flag is cleared
  * by receivers.
  * If the framerate of the format is a multiple of six, then the pixelclock
  * used to set up the transmitter is divided by 1.001 to make it compatible
  * with 60 Hz based standards such as NTSC and PAL-M that use a framerate of
  * 29.97 Hz. Otherwise this flag is cleared. If the transmitter can't generate
  * such frequencies, then the flag will also be cleared.
  */
 #define V4L2_DV_FL_REDUCED_FPS          (1 << 2)
 /*
  * Specific to interlaced formats: if set, then field 1 is really one half-line
  * longer and field 2 is really one half-line shorter, so each field has
  * exactly the same number of half-lines. Whether half-lines can be detected
  * or used depends on the hardware.
  */
 #define V4L2_DV_FL_HALF_LINE            (1 << 3)
 /*
  * If set, then this is a Consumer Electronics (CE) video format. Such formats
  * differ from other formats (commonly called IT formats) in that if RGB
  * encoding is used then by default the RGB values use limited range (i.e.
  * use the range 16-235) as opposed to 0-255. All formats defined in CEA-861
  * except for the 640x480 format are CE formats.
  */
 #define V4L2_DV_FL_IS_CE_VIDEO          (1 << 4)
 /* Some formats like SMPTE-125M have an interlaced signal with a odd
  * total height. For these formats, if this flag is set, the first
  * field has the extra line. If not, it is the second field.
  */
 #define V4L2_DV_FL_FIRST_FIELD_EXTRA_LINE   (1 << 5)
 /*
  * If set, then the picture_aspect field is valid. Otherwise assume that the
  * pixels are square, so the picture aspect ratio is the same as the width to
  * height ratio.
  */
 #define V4L2_DV_FL_HAS_PICTURE_ASPECT       (1 << 6)
 /*
  * If set, then the cea861_vic field is valid and contains the Video
  * Identification Code as per the CEA-861 standard.
  */
 #define V4L2_DV_FL_HAS_CEA861_VIC       (1 << 7)
 /*
  * If set, then the hdmi_vic field is valid and contains the Video
  * Identification Code as per the HDMI standard (HDMI Vendor Specific
  * InfoFrame).
  */
 #define V4L2_DV_FL_HAS_HDMI_VIC         (1 << 8)
 /*
  * CEA-861 specific: only valid for video receivers.
  * If set, then HW can detect the difference between regular FPS and
  * 1000/1001 FPS. Note: This flag is only valid for HDMI VIC codes with
  * the V4L2_DV_FL_CAN_REDUCE_FPS flag set.
  */
 #define V4L2_DV_FL_CAN_DETECT_REDUCED_FPS   (1 << 9)
 
 /* A few useful defines to calculate the total blanking and frame sizes */
 #define V4L2_DV_BT_BLANKING_WIDTH(bt) \
     ((bt)->hfrontporch + (bt)->hsync + (bt)->hbackporch)
 #define V4L2_DV_BT_FRAME_WIDTH(bt) \
     ((bt)->width + V4L2_DV_BT_BLANKING_WIDTH(bt))
 #define V4L2_DV_BT_BLANKING_HEIGHT(bt) \
     ((bt)->vfrontporch + (bt)->vsync + (bt)->vbackporch + \
      (bt)->il_vfrontporch + (bt)->il_vsync + (bt)->il_vbackporch)
 #define V4L2_DV_BT_FRAME_HEIGHT(bt) \
     ((bt)->height + V4L2_DV_BT_BLANKING_HEIGHT(bt))
 
 /** struct v4l2_dv_timings - DV timings
  * @type:   the type of the timings
  * @bt: BT656/1120 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 */
 
 
 /** struct v4l2_enum_dv_timings - DV timings enumeration
  * @index:  enumeration index
  * @pad:    the pad number for which to enumerate timings (used with
  *      v4l-subdev nodes only)
  * @reserved:   must be zeroed
  * @timings:    the timings for the given index
  */
 struct v4l2_enum_dv_timings {
     __u32 index;
     __u32 pad;
     __u32 reserved[2];
     struct v4l2_dv_timings timings;
 };
 
 /** struct v4l2_bt_timings_cap - BT.656/BT.1120 timing capabilities
  * @min_width:      width in pixels
  * @max_width:      width in pixels
  * @min_height:     height in lines
  * @max_height:     height in lines
  * @min_pixelclock: Pixel clock in HZ. Ex. 74.25MHz->74250000
  * @max_pixelclock: Pixel clock in HZ. Ex. 74.25MHz->74250000
  * @standards:      Supported standards
  * @capabilities:   Supported capabilities
  * @reserved:       Must be zeroed
  */
 struct v4l2_bt_timings_cap {
     __u32   min_width;
     __u32   max_width;
     __u32   min_height;
     __u32   max_height;
     __u64   min_pixelclock;
     __u64   max_pixelclock;
     __u32   standards;
     __u32   capabilities;
     __u32   reserved[16];
 } __attribute__ ((packed));
 
 /* Supports interlaced formats */
 #define V4L2_DV_BT_CAP_INTERLACED   (1 << 0)
 /* Supports progressive formats */
 #define V4L2_DV_BT_CAP_PROGRESSIVE  (1 << 1)
 /* Supports CVT/GTF reduced blanking */
 #define V4L2_DV_BT_CAP_REDUCED_BLANKING (1 << 2)
 /* Supports custom formats */
 #define V4L2_DV_BT_CAP_CUSTOM       (1 << 3)
 
 /** struct v4l2_dv_timings_cap - DV timings capabilities
  * @type:   the type of the timings (same as in struct v4l2_dv_timings)
  * @pad:    the pad number for which to query capabilities (used with
  *      v4l-subdev nodes only)
  * @bt:     the BT656/1120 timings capabilities
  */
 struct v4l2_dv_timings_cap {
     __u32 type;
     __u32 pad;
     __u32 reserved[2];
     union {
         struct v4l2_bt_timings_cap bt;
         __u32 raw_data[32];
     };
 };
 
 
 /*
  *  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;             /*  enum v4l2_tuner_type */
     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
 #define V4L2_INPUT_TYPE_TOUCH       3
 
 /* 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 */
 #define V4L2_IN_ST_NO_V_LOCK   0x00000400  /* No vertical sync lock */
 #define V4L2_IN_ST_NO_STD_LOCK 0x00000800  /* No standard format lock */
 
 /* 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_DV_TIMINGS      0x00000002 /* Supports S_DV_TIMINGS */
 #define V4L2_IN_CAP_CUSTOM_TIMINGS  V4L2_IN_CAP_DV_TIMINGS /* For compatibility */
 #define V4L2_IN_CAP_STD         0x00000004 /* Supports S_STD */
 #define V4L2_IN_CAP_NATIVE_SIZE     0x00000008 /* Supports setting native size */
 
 /*
  *  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_DV_TIMINGS     0x00000002 /* Supports S_DV_TIMINGS */
 #define V4L2_OUT_CAP_CUSTOM_TIMINGS V4L2_OUT_CAP_DV_TIMINGS /* For compatibility */
 #define V4L2_OUT_CAP_STD        0x00000004 /* Supports S_STD */
 #define V4L2_OUT_CAP_NATIVE_SIZE    0x00000008 /* Supports setting native size */
 
 /*
  *  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 __user *string;
         __u8 __user *p_u8;
         __u16 __user *p_u16;
         __u32 __user *p_u32;
         struct v4l2_area __user *p_area;
         struct v4l2_ctrl_h264_sps __user *p_h264_sps;
         struct v4l2_ctrl_h264_pps *p_h264_pps;
         struct v4l2_ctrl_h264_scaling_matrix __user *p_h264_scaling_matrix;
         struct v4l2_ctrl_h264_pred_weights __user *p_h264_pred_weights;
         struct v4l2_ctrl_h264_slice_params __user *p_h264_slice_params;
         struct v4l2_ctrl_h264_decode_params __user *p_h264_decode_params;
         struct v4l2_ctrl_fwht_params __user *p_fwht_params;
         struct v4l2_ctrl_vp8_frame __user *p_vp8_frame;
         struct v4l2_ctrl_mpeg2_sequence __user *p_mpeg2_sequence;
         struct v4l2_ctrl_mpeg2_picture __user *p_mpeg2_picture;
         struct v4l2_ctrl_mpeg2_quantisation __user *p_mpeg2_quantisation;
         struct v4l2_ctrl_vp9_compressed_hdr __user *p_vp9_compressed_hdr_probs;
         struct v4l2_ctrl_vp9_frame __user *p_vp9_frame;
         struct v4l2_ctrl_hevc_sps __user *p_hevc_sps;
         struct v4l2_ctrl_hevc_pps __user *p_hevc_pps;
         struct v4l2_ctrl_hevc_slice_params __user *p_hevc_slice_params;
         struct v4l2_ctrl_hevc_scaling_matrix __user *p_hevc_scaling_matrix;
         struct v4l2_ctrl_hevc_decode_params __user *p_hevc_decode_params;
         void __user *ptr;
     };
 } __attribute__ ((packed));
 
 struct v4l2_ext_controls {
     union {
 #ifndef __KERNEL__
         __u32 ctrl_class;
 #endif
         __u32 which;
     };
     __u32 count;
     __u32 error_idx;
     __s32 request_fd;
     __u32 reserved[1];
     struct v4l2_ext_control *controls;
 };
 
 #define V4L2_CTRL_ID_MASK     (0x0fffffff)
 #ifndef __KERNEL__
 #define V4L2_CTRL_ID2CLASS(id)    ((id) & 0x0fff0000UL)
 #endif
 #define V4L2_CTRL_ID2WHICH(id)    ((id) & 0x0fff0000UL)
 #define V4L2_CTRL_DRIVER_PRIV(id) (((id) & 0xffff) >= 0x1000)
 #define V4L2_CTRL_MAX_DIMS    (4)
 #define V4L2_CTRL_WHICH_CUR_VAL   0
 #define V4L2_CTRL_WHICH_DEF_VAL   0x0f000000
 #define V4L2_CTRL_WHICH_REQUEST_VAL 0x0f010000
 
 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,
     V4L2_CTRL_TYPE_BITMASK       = 8,
     V4L2_CTRL_TYPE_INTEGER_MENU  = 9,
 
     /* Compound types are >= 0x0100 */
     V4L2_CTRL_COMPOUND_TYPES     = 0x0100,
     V4L2_CTRL_TYPE_U8        = 0x0100,
     V4L2_CTRL_TYPE_U16       = 0x0101,
     V4L2_CTRL_TYPE_U32       = 0x0102,
     V4L2_CTRL_TYPE_AREA          = 0x0106,
 
     V4L2_CTRL_TYPE_HDR10_CLL_INFO       = 0x0110,
     V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY  = 0x0111,
 
     V4L2_CTRL_TYPE_H264_SPS             = 0x0200,
     V4L2_CTRL_TYPE_H264_PPS         = 0x0201,
     V4L2_CTRL_TYPE_H264_SCALING_MATRIX  = 0x0202,
     V4L2_CTRL_TYPE_H264_SLICE_PARAMS    = 0x0203,
     V4L2_CTRL_TYPE_H264_DECODE_PARAMS   = 0x0204,
     V4L2_CTRL_TYPE_H264_PRED_WEIGHTS    = 0x0205,
 
     V4L2_CTRL_TYPE_FWHT_PARAMS      = 0x0220,
 
     V4L2_CTRL_TYPE_VP8_FRAME            = 0x0240,
 
     V4L2_CTRL_TYPE_MPEG2_QUANTISATION   = 0x0250,
     V4L2_CTRL_TYPE_MPEG2_SEQUENCE       = 0x0251,
     V4L2_CTRL_TYPE_MPEG2_PICTURE        = 0x0252,
 
     V4L2_CTRL_TYPE_VP9_COMPRESSED_HDR   = 0x0260,
     V4L2_CTRL_TYPE_VP9_FRAME        = 0x0261,
 
     V4L2_CTRL_TYPE_HEVC_SPS         = 0x0270,
     V4L2_CTRL_TYPE_HEVC_PPS         = 0x0271,
     V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS    = 0x0272,
     V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX  = 0x0273,
     V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS   = 0x0274,
 };
 
 /*  Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
 struct v4l2_queryctrl {
     __u32            id;
     __u32            type;  /* enum v4l2_ctrl_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_QUERY_EXT_CTRL ioctl for querying extended controls */
 struct v4l2_query_ext_ctrl {
     __u32            id;
     __u32            type;
     char             name[32];
     __s64            minimum;
     __s64            maximum;
     __u64            step;
     __s64            default_value;
     __u32                flags;
     __u32                elem_size;
     __u32                elems;
     __u32                nr_of_dims;
     __u32                dims[V4L2_CTRL_MAX_DIMS];
     __u32            reserved[32];
 };
 
 /*  Used in the VIDIOC_QUERYMENU ioctl for querying menu items */
 struct v4l2_querymenu {
     __u32       id;
     __u32       index;
     union {
         __u8    name[32];   /* Whatever */
         __s64   value;
     };
     __u32       reserved;
 } __attribute__ ((packed));
 
 /*  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
 #define V4L2_CTRL_FLAG_VOLATILE     0x0080
 #define V4L2_CTRL_FLAG_HAS_PAYLOAD  0x0100
 #define V4L2_CTRL_FLAG_EXECUTE_ON_WRITE 0x0200
 #define V4L2_CTRL_FLAG_MODIFY_LAYOUT    0x0400
 #define V4L2_CTRL_FLAG_DYNAMIC_ARRAY    0x0800
 
 /*  Query flags, to be ORed with the control ID */
 #define V4L2_CTRL_FLAG_NEXT_CTRL    0x80000000
 #define V4L2_CTRL_FLAG_NEXT_COMPOUND    0x40000000
 
 /*  User-class control IDs defined by V4L2 */
 #define V4L2_CID_MAX_CTRLS      1024
 /*  IDs reserved for driver specific controls */
 #define V4L2_CID_PRIVATE_BASE       0x08000000
 
 
 /*
  *  T U N I N G
  */
 struct v4l2_tuner {
     __u32                   index;
     __u8            name[32];
     __u32           type;   /* enum v4l2_tuner_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           type;   /* enum v4l2_tuner_type */
     __u32           reserved[3];
 };
 
 /*  Flags for the 'capability' field */
 #define V4L2_TUNER_CAP_LOW      0x0001
 #define V4L2_TUNER_CAP_NORM     0x0002
 #define V4L2_TUNER_CAP_HWSEEK_BOUNDED   0x0004
 #define V4L2_TUNER_CAP_HWSEEK_WRAP  0x0008
 #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
 #define V4L2_TUNER_CAP_FREQ_BANDS   0x0400
 #define V4L2_TUNER_CAP_HWSEEK_PROG_LIM  0x0800
 #define V4L2_TUNER_CAP_1HZ      0x1000
 
 /*  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;
     __u32   type;   /* enum v4l2_tuner_type */
     __u32   frequency;
     __u32   reserved[8];
 };
 
 #define V4L2_BAND_MODULATION_VSB    (1 << 1)
 #define V4L2_BAND_MODULATION_FM     (1 << 2)
 #define V4L2_BAND_MODULATION_AM     (1 << 3)
 
 struct v4l2_frequency_band {
     __u32   tuner;
     __u32   type;   /* enum v4l2_tuner_type */
     __u32   index;
     __u32   capability;
     __u32   rangelow;
     __u32   rangehigh;
     __u32   modulation;
     __u32   reserved[9];
 };
 
 struct v4l2_hw_freq_seek {
     __u32   tuner;
     __u32   type;   /* enum v4l2_tuner_type */
     __u32   seek_upward;
     __u32   wrap_around;
     __u32   spacing;
     __u32   rangelow;
     __u32   rangehigh;
     __u32   reserved[5];
 };
 
 /*
  *  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
  */
 #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;
     };
 };
 
 /* Decoder commands */
 #define V4L2_DEC_CMD_START       (0)
 #define V4L2_DEC_CMD_STOP        (1)
 #define V4L2_DEC_CMD_PAUSE       (2)
 #define V4L2_DEC_CMD_RESUME      (3)
 #define V4L2_DEC_CMD_FLUSH       (4)
 
 /* Flags for V4L2_DEC_CMD_START */
 #define V4L2_DEC_CMD_START_MUTE_AUDIO   (1 << 0)
 
 /* Flags for V4L2_DEC_CMD_PAUSE */
 #define V4L2_DEC_CMD_PAUSE_TO_BLACK (1 << 0)
 
 /* Flags for V4L2_DEC_CMD_STOP */
 #define V4L2_DEC_CMD_STOP_TO_BLACK  (1 << 0)
 #define V4L2_DEC_CMD_STOP_IMMEDIATELY   (1 << 1)
 
 /* Play format requirements (returned by the driver): */
 
 /* The decoder has no special format requirements */
 #define V4L2_DEC_START_FMT_NONE     (0)
 /* The decoder requires full GOPs */
 #define V4L2_DEC_START_FMT_GOP      (1)
 
 /* The structure must be zeroed before use by the application
    This ensures it can be extended safely in the future. */
 struct v4l2_decoder_cmd {
     __u32 cmd;
     __u32 flags;
     union {
         struct {
             __u64 pts;
         } stop;
 
         struct {
             /* 0 or 1000 specifies normal speed,
                1 specifies forward single stepping,
                -1 specifies backward single stepping,
                >1: playback at speed/1000 of the normal speed,
                <-1: reverse playback at (-speed/1000) of the normal speed. */
             __s32 speed;
             __u32 format;
         } start;
 
         struct {
             __u32 data[16];
         } 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)
 
 /* ITU-R start lines for each field */
 #define V4L2_VBI_ITU_525_F1_START (1)
 #define V4L2_VBI_ITU_525_F2_START (264)
 #define V4L2_VBI_ITU_625_F1_START (1)
 #define V4L2_VBI_ITU_625_F2_START (314)
 
 /* 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];
     __u32   type;       /* enum v4l2_buf_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
  * @reserved:       drivers and applications must zero this array
  */
 struct v4l2_plane_pix_format {
     __u32       sizeimage;
     __u32       bytesperline;
     __u16       reserved[6];
 } __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:      enum v4l2_field; field order (for interlaced video)
  * @colorspace:     enum v4l2_colorspace; supplemental to pixelformat
  * @plane_fmt:      per-plane information
  * @num_planes:     number of planes for this format
  * @flags:      format flags (V4L2_PIX_FMT_FLAG_*)
  * @ycbcr_enc:      enum v4l2_ycbcr_encoding, Y'CbCr encoding
  * @hsv_enc:        enum v4l2_hsv_encoding, HSV encoding
  * @quantization:   enum v4l2_quantization, colorspace quantization
  * @xfer_func:      enum v4l2_xfer_func, colorspace transfer function
  * @reserved:       drivers and applications must zero this array
  */
 struct v4l2_pix_format_mplane {
     __u32               width;
     __u32               height;
     __u32               pixelformat;
     __u32               field;
     __u32               colorspace;
 
     struct v4l2_plane_pix_format    plane_fmt[VIDEO_MAX_PLANES];
     __u8                num_planes;
     __u8                flags;
      union {
         __u8                ycbcr_enc;
         __u8                hsv_enc;
     };
     __u8                quantization;
     __u8                xfer_func;
     __u8                reserved[7];
 } __attribute__ ((packed));
 
 /**
  * struct v4l2_sdr_format - SDR format definition
  * @pixelformat:    little endian four character code (fourcc)
  * @buffersize:     maximum size in bytes required for data
  * @reserved:       drivers and applications must zero this array
  */
 struct v4l2_sdr_format {
     __u32               pixelformat;
     __u32               buffersize;
     __u8                reserved[24];
 } __attribute__ ((packed));
 
 /**
  * struct v4l2_meta_format - metadata format definition
  * @dataformat:     little endian four character code (fourcc)
  * @buffersize:     maximum size in bytes required for data
  */
 struct v4l2_meta_format {
     __u32               dataformat;
     __u32               buffersize;
 } __attribute__ ((packed));
 
 /**
  * struct v4l2_format - stream data format
  * @type:   enum v4l2_buf_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
  * @fmt:    union of @pix, @pix_mp, @win, @vbi, @sliced, @sdr, @meta
  *      and @raw_data
  */
 struct v4l2_format {
     __u32    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 */
         struct v4l2_sdr_format      sdr;     /* V4L2_BUF_TYPE_SDR_CAPTURE */
         struct v4l2_meta_format     meta;    /* V4L2_BUF_TYPE_META_CAPTURE */
         __u8    raw_data[200];                   /* user-defined */
     } fmt;
 };
 
 /*  Stream type-dependent parameters
  */
 struct v4l2_streamparm {
     __u32    type;          /* enum v4l2_buf_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_CTRL             3
 #define V4L2_EVENT_FRAME_SYNC           4
 #define V4L2_EVENT_SOURCE_CHANGE        5
 #define V4L2_EVENT_MOTION_DET           6
 #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));
 
 /* Payload for V4L2_EVENT_CTRL */
 #define V4L2_EVENT_CTRL_CH_VALUE        (1 << 0)
 #define V4L2_EVENT_CTRL_CH_FLAGS        (1 << 1)
 #define V4L2_EVENT_CTRL_CH_RANGE        (1 << 2)
 
 struct v4l2_event_ctrl {
     __u32 changes;
     __u32 type;
     union {
         __s32 value;
         __s64 value64;
     };
     __u32 flags;
     __s32 minimum;
     __s32 maximum;
     __s32 step;
     __s32 default_value;
 };
 
 struct v4l2_event_frame_sync {
     __u32 frame_sequence;
 };
 
 #define V4L2_EVENT_SRC_CH_RESOLUTION        (1 << 0)
 
 struct v4l2_event_src_change {
     __u32 changes;
 };
 
 #define V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ (1 << 0)
 
 /**
  * struct v4l2_event_motion_det - motion detection event
  * @flags:             if V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ is set, then the
  *                     frame_sequence field is valid.
  * @frame_sequence:    the frame sequence number associated with this event.
  * @region_mask:       which regions detected motion.
  */
 struct v4l2_event_motion_det {
     __u32 flags;
     __u32 frame_sequence;
     __u32 region_mask;
 };
 
 struct v4l2_event {
     __u32               type;
     union {
         struct v4l2_event_vsync     vsync;
         struct v4l2_event_ctrl      ctrl;
         struct v4l2_event_frame_sync    frame_sync;
         struct v4l2_event_src_change    src_change;
         struct v4l2_event_motion_det    motion_det;
         __u8                data[64];
     } u;
     __u32               pending;
     __u32               sequence;
 #ifdef __KERNEL__
     struct __kernel_timespec    timestamp;
 #else
     struct timespec         timestamp;
 #endif
     __u32               id;
     __u32               reserved[8];
 };
 
 #define V4L2_EVENT_SUB_FL_SEND_INITIAL      (1 << 0)
 #define V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK    (1 << 1)
 
 struct v4l2_event_subscription {
     __u32               type;
     __u32               id;
     __u32               flags;
     __u32               reserved[5];
 };
 
 /*
  *  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_BRIDGE      0  /* Match against chip ID on the bridge (0 for the bridge) */
 #define V4L2_CHIP_MATCH_SUBDEV      4  /* Match against subdev index */
 
 /* The following four defines are no longer in use */
 #define V4L2_CHIP_MATCH_HOST V4L2_CHIP_MATCH_BRIDGE
 #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 ancillary 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));
 
 #define V4L2_CHIP_FL_READABLE (1 << 0)
 #define V4L2_CHIP_FL_WRITABLE (1 << 1)
 
 /* VIDIOC_DBG_G_CHIP_INFO */
 struct v4l2_dbg_chip_info {
     struct v4l2_dbg_match match;
     char name[32];
     __u32 flags;
     __u32 reserved[32];
 } __attribute__ ((packed));
 
 /**
  * struct v4l2_create_buffers - VIDIOC_CREATE_BUFS argument
  * @index:  on return, index of the first created buffer
  * @count:  entry: number of requested buffers,
  *      return: number of created buffers
  * @memory: enum v4l2_memory; buffer memory type
  * @format: frame format, for which buffers are requested
  * @capabilities: capabilities of this buffer type.
  * @flags:  additional buffer management attributes (ignored unless the
  *      queue has V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS capability
  *      and configured for MMAP streaming I/O).
  * @reserved:   future extensions
  */
 struct v4l2_create_buffers {
     __u32           index;
     __u32           count;
     __u32           memory;
     struct v4l2_format  format;
     __u32           capabilities;
     __u32           flags;
     __u32           reserved[6];
 };
 
 /*
  *  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_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_EXPBUF       _IOWR('V', 16, struct v4l2_exportbuffer)
 #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_EDID       _IOWR('V', 40, struct v4l2_edid)
 #define VIDIOC_S_EDID       _IOWR('V', 41, struct v4l2_edid)
 #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, __u32) /* enum v4l2_priority */
 #define VIDIOC_S_PRIORITY    _IOW('V', 68, __u32) /* 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)
 #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)
 
 /*
  * 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)
 
 #define VIDIOC_S_HW_FREQ_SEEK    _IOW('V', 82, struct v4l2_hw_freq_seek)
 #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)
 #define VIDIOC_CREATE_BUFS  _IOWR('V', 92, struct v4l2_create_buffers)
 #define VIDIOC_PREPARE_BUF  _IOWR('V', 93, struct v4l2_buffer)
 #define VIDIOC_G_SELECTION  _IOWR('V', 94, struct v4l2_selection)
 #define VIDIOC_S_SELECTION  _IOWR('V', 95, struct v4l2_selection)
 #define VIDIOC_DECODER_CMD  _IOWR('V', 96, struct v4l2_decoder_cmd)
 #define VIDIOC_TRY_DECODER_CMD  _IOWR('V', 97, struct v4l2_decoder_cmd)
 #define VIDIOC_ENUM_DV_TIMINGS  _IOWR('V', 98, struct v4l2_enum_dv_timings)
 #define VIDIOC_QUERY_DV_TIMINGS  _IOR('V', 99, struct v4l2_dv_timings)
 #define VIDIOC_DV_TIMINGS_CAP   _IOWR('V', 100, struct v4l2_dv_timings_cap)
 #define VIDIOC_ENUM_FREQ_BANDS  _IOWR('V', 101, struct v4l2_frequency_band)
 
 /*
  * Experimental, meant for debugging, testing and internal use.
  * Never use this in applications!
  */
 #define VIDIOC_DBG_G_CHIP_INFO  _IOWR('V', 102, struct v4l2_dbg_chip_info)
 
 #define VIDIOC_QUERY_EXT_CTRL   _IOWR('V', 103, struct v4l2_query_ext_ctrl)
 
 /* Reminder: when adding new ioctls please add support for them to
    drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
 
 #define BASE_VIDIOC_PRIVATE 192     /* 192-255 are private */
 
 /* Deprecated definitions kept for backwards compatibility */
 #ifndef __KERNEL__
 #define V4L2_PIX_FMT_HM12 V4L2_PIX_FMT_NV12_16L16
 #define V4L2_PIX_FMT_SUNXI_TILED_NV12 V4L2_PIX_FMT_NV12_32L32
 #endif
 
 #endif /* _UAPI__LINUX_VIDEODEV2_H */