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      1 /*
      2  *  Video for Linux Two header file
      3  *
      4  *  Copyright (C) 1999-2012 the contributors
      5  *
      6  *  This program is free software; you can redistribute it and/or modify
      7  *  it under the terms of the GNU General Public License as published by
      8  *  the Free Software Foundation; either version 2 of the License, or
      9  *  (at your option) any later version.
     10  *
     11  *  This program is distributed in the hope that it will be useful,
     12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     14  *  GNU General Public License for more details.
     15  *
     16  *  Alternatively you can redistribute this file under the terms of the
     17  *  BSD license as stated below:
     18  *
     19  *  Redistribution and use in source and binary forms, with or without
     20  *  modification, are permitted provided that the following conditions
     21  *  are met:
     22  *  1. Redistributions of source code must retain the above copyright
     23  *     notice, this list of conditions and the following disclaimer.
     24  *  2. Redistributions in binary form must reproduce the above copyright
     25  *     notice, this list of conditions and the following disclaimer in
     26  *     the documentation and/or other materials provided with the
     27  *     distribution.
     28  *  3. The names of its contributors may not be used to endorse or promote
     29  *     products derived from this software without specific prior written
     30  *     permission.
     31  *
     32  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     33  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     34  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     35  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     36  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     37  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
     38  *  TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     39  *  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     40  *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     41  *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     42  *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     43  *
     44  *	Header file for v4l or V4L2 drivers and applications
     45  * with public API.
     46  * All kernel-specific stuff were moved to media/v4l2-dev.h, so
     47  * no #if __KERNEL tests are allowed here
     48  *
     49  *	See https://linuxtv.org for more info
     50  *
     51  *	Author: Bill Dirks <bill (at) thedirks.org>
     52  *		Justin Schoeman
     53  *              Hans Verkuil <hverkuil (at) xs4all.nl>
     54  *		et al.
     55  */
     56 #ifndef _UAPI__LINUX_VIDEODEV2_H
     57 #define _UAPI__LINUX_VIDEODEV2_H
     58 
     59 #ifndef __KERNEL__
     60 #include <sys/time.h>
     61 #endif
     62 #include <linux/compiler.h>
     63 #include <linux/ioctl.h>
     64 #include <linux/types.h>
     65 #include <linux/v4l2-common.h>
     66 #include <linux/v4l2-controls.h>
     67 
     68 /*
     69  * Common stuff for both V4L1 and V4L2
     70  * Moved from videodev.h
     71  */
     72 #define VIDEO_MAX_FRAME               32
     73 #define VIDEO_MAX_PLANES               8
     74 
     75 /*
     76  *	M I S C E L L A N E O U S
     77  */
     78 
     79 /*  Four-character-code (FOURCC) */
     80 #define v4l2_fourcc(a, b, c, d)\
     81 	((__u32)(a) | ((__u32)(b) << 8) | ((__u32)(c) << 16) | ((__u32)(d) << 24))
     82 #define v4l2_fourcc_be(a, b, c, d)	(v4l2_fourcc(a, b, c, d) | (1 << 31))
     83 
     84 /*
     85  *	E N U M S
     86  */
     87 enum v4l2_field {
     88 	V4L2_FIELD_ANY           = 0, /* driver can choose from none,
     89 					 top, bottom, interlaced
     90 					 depending on whatever it thinks
     91 					 is approximate ... */
     92 	V4L2_FIELD_NONE          = 1, /* this device has no fields ... */
     93 	V4L2_FIELD_TOP           = 2, /* top field only */
     94 	V4L2_FIELD_BOTTOM        = 3, /* bottom field only */
     95 	V4L2_FIELD_INTERLACED    = 4, /* both fields interlaced */
     96 	V4L2_FIELD_SEQ_TB        = 5, /* both fields sequential into one
     97 					 buffer, top-bottom order */
     98 	V4L2_FIELD_SEQ_BT        = 6, /* same as above + bottom-top order */
     99 	V4L2_FIELD_ALTERNATE     = 7, /* both fields alternating into
    100 					 separate buffers */
    101 	V4L2_FIELD_INTERLACED_TB = 8, /* both fields interlaced, top field
    102 					 first and the top field is
    103 					 transmitted first */
    104 	V4L2_FIELD_INTERLACED_BT = 9, /* both fields interlaced, top field
    105 					 first and the bottom field is
    106 					 transmitted first */
    107 };
    108 #define V4L2_FIELD_HAS_TOP(field)	\
    109 	((field) == V4L2_FIELD_TOP 	||\
    110 	 (field) == V4L2_FIELD_INTERLACED ||\
    111 	 (field) == V4L2_FIELD_INTERLACED_TB ||\
    112 	 (field) == V4L2_FIELD_INTERLACED_BT ||\
    113 	 (field) == V4L2_FIELD_SEQ_TB	||\
    114 	 (field) == V4L2_FIELD_SEQ_BT)
    115 #define V4L2_FIELD_HAS_BOTTOM(field)	\
    116 	((field) == V4L2_FIELD_BOTTOM 	||\
    117 	 (field) == V4L2_FIELD_INTERLACED ||\
    118 	 (field) == V4L2_FIELD_INTERLACED_TB ||\
    119 	 (field) == V4L2_FIELD_INTERLACED_BT ||\
    120 	 (field) == V4L2_FIELD_SEQ_TB	||\
    121 	 (field) == V4L2_FIELD_SEQ_BT)
    122 #define V4L2_FIELD_HAS_BOTH(field)	\
    123 	((field) == V4L2_FIELD_INTERLACED ||\
    124 	 (field) == V4L2_FIELD_INTERLACED_TB ||\
    125 	 (field) == V4L2_FIELD_INTERLACED_BT ||\
    126 	 (field) == V4L2_FIELD_SEQ_TB ||\
    127 	 (field) == V4L2_FIELD_SEQ_BT)
    128 #define V4L2_FIELD_HAS_T_OR_B(field)	\
    129 	((field) == V4L2_FIELD_BOTTOM ||\
    130 	 (field) == V4L2_FIELD_TOP ||\
    131 	 (field) == V4L2_FIELD_ALTERNATE)
    132 
    133 enum v4l2_buf_type {
    134 	V4L2_BUF_TYPE_VIDEO_CAPTURE        = 1,
    135 	V4L2_BUF_TYPE_VIDEO_OUTPUT         = 2,
    136 	V4L2_BUF_TYPE_VIDEO_OVERLAY        = 3,
    137 	V4L2_BUF_TYPE_VBI_CAPTURE          = 4,
    138 	V4L2_BUF_TYPE_VBI_OUTPUT           = 5,
    139 	V4L2_BUF_TYPE_SLICED_VBI_CAPTURE   = 6,
    140 	V4L2_BUF_TYPE_SLICED_VBI_OUTPUT    = 7,
    141 	V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY = 8,
    142 	V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE = 9,
    143 	V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE  = 10,
    144 	V4L2_BUF_TYPE_SDR_CAPTURE          = 11,
    145 	V4L2_BUF_TYPE_SDR_OUTPUT           = 12,
    146 	/* Deprecated, do not use */
    147 	V4L2_BUF_TYPE_PRIVATE              = 0x80,
    148 };
    149 
    150 #define V4L2_TYPE_IS_MULTIPLANAR(type)			\
    151 	((type) == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE	\
    152 	 || (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
    153 
    154 #define V4L2_TYPE_IS_OUTPUT(type)				\
    155 	((type) == V4L2_BUF_TYPE_VIDEO_OUTPUT			\
    156 	 || (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE		\
    157 	 || (type) == V4L2_BUF_TYPE_VIDEO_OVERLAY		\
    158 	 || (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY	\
    159 	 || (type) == V4L2_BUF_TYPE_VBI_OUTPUT			\
    160 	 || (type) == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT		\
    161 	 || (type) == V4L2_BUF_TYPE_SDR_OUTPUT)
    162 
    163 enum v4l2_tuner_type {
    164 	V4L2_TUNER_RADIO	     = 1,
    165 	V4L2_TUNER_ANALOG_TV	     = 2,
    166 	V4L2_TUNER_DIGITAL_TV	     = 3,
    167 	V4L2_TUNER_SDR               = 4,
    168 	V4L2_TUNER_RF                = 5,
    169 };
    170 
    171 /* Deprecated, do not use */
    172 #define V4L2_TUNER_ADC  V4L2_TUNER_SDR
    173 
    174 enum v4l2_memory {
    175 	V4L2_MEMORY_MMAP             = 1,
    176 	V4L2_MEMORY_USERPTR          = 2,
    177 	V4L2_MEMORY_OVERLAY          = 3,
    178 	V4L2_MEMORY_DMABUF           = 4,
    179 };
    180 
    181 /* see also http://vektor.theorem.ca/graphics/ycbcr/ */
    182 enum v4l2_colorspace {
    183 	/*
    184 	 * Default colorspace, i.e. let the driver figure it out.
    185 	 * Can only be used with video capture.
    186 	 */
    187 	V4L2_COLORSPACE_DEFAULT       = 0,
    188 
    189 	/* SMPTE 170M: used for broadcast NTSC/PAL SDTV */
    190 	V4L2_COLORSPACE_SMPTE170M     = 1,
    191 
    192 	/* Obsolete pre-1998 SMPTE 240M HDTV standard, superseded by Rec 709 */
    193 	V4L2_COLORSPACE_SMPTE240M     = 2,
    194 
    195 	/* Rec.709: used for HDTV */
    196 	V4L2_COLORSPACE_REC709        = 3,
    197 
    198 	/*
    199 	 * Deprecated, do not use. No driver will ever return this. This was
    200 	 * based on a misunderstanding of the bt878 datasheet.
    201 	 */
    202 	V4L2_COLORSPACE_BT878         = 4,
    203 
    204 	/*
    205 	 * NTSC 1953 colorspace. This only makes sense when dealing with
    206 	 * really, really old NTSC recordings. Superseded by SMPTE 170M.
    207 	 */
    208 	V4L2_COLORSPACE_470_SYSTEM_M  = 5,
    209 
    210 	/*
    211 	 * EBU Tech 3213 PAL/SECAM colorspace. This only makes sense when
    212 	 * dealing with really old PAL/SECAM recordings. Superseded by
    213 	 * SMPTE 170M.
    214 	 */
    215 	V4L2_COLORSPACE_470_SYSTEM_BG = 6,
    216 
    217 	/*
    218 	 * Effectively shorthand for V4L2_COLORSPACE_SRGB, V4L2_YCBCR_ENC_601
    219 	 * and V4L2_QUANTIZATION_FULL_RANGE. To be used for (Motion-)JPEG.
    220 	 */
    221 	V4L2_COLORSPACE_JPEG          = 7,
    222 
    223 	/* For RGB colorspaces such as produces by most webcams. */
    224 	V4L2_COLORSPACE_SRGB          = 8,
    225 
    226 	/* AdobeRGB colorspace */
    227 	V4L2_COLORSPACE_ADOBERGB      = 9,
    228 
    229 	/* BT.2020 colorspace, used for UHDTV. */
    230 	V4L2_COLORSPACE_BT2020        = 10,
    231 
    232 	/* Raw colorspace: for RAW unprocessed images */
    233 	V4L2_COLORSPACE_RAW           = 11,
    234 
    235 	/* DCI-P3 colorspace, used by cinema projectors */
    236 	V4L2_COLORSPACE_DCI_P3        = 12,
    237 };
    238 
    239 /*
    240  * Determine how COLORSPACE_DEFAULT should map to a proper colorspace.
    241  * This depends on whether this is a SDTV image (use SMPTE 170M), an
    242  * HDTV image (use Rec. 709), or something else (use sRGB).
    243  */
    244 #define V4L2_MAP_COLORSPACE_DEFAULT(is_sdtv, is_hdtv) \
    245 	((is_sdtv) ? V4L2_COLORSPACE_SMPTE170M : \
    246 	 ((is_hdtv) ? V4L2_COLORSPACE_REC709 : V4L2_COLORSPACE_SRGB))
    247 
    248 enum v4l2_xfer_func {
    249 	/*
    250 	 * Mapping of V4L2_XFER_FUNC_DEFAULT to actual transfer functions
    251 	 * for the various colorspaces:
    252 	 *
    253 	 * V4L2_COLORSPACE_SMPTE170M, V4L2_COLORSPACE_470_SYSTEM_M,
    254 	 * V4L2_COLORSPACE_470_SYSTEM_BG, V4L2_COLORSPACE_REC709 and
    255 	 * V4L2_COLORSPACE_BT2020: V4L2_XFER_FUNC_709
    256 	 *
    257 	 * V4L2_COLORSPACE_SRGB, V4L2_COLORSPACE_JPEG: V4L2_XFER_FUNC_SRGB
    258 	 *
    259 	 * V4L2_COLORSPACE_ADOBERGB: V4L2_XFER_FUNC_ADOBERGB
    260 	 *
    261 	 * V4L2_COLORSPACE_SMPTE240M: V4L2_XFER_FUNC_SMPTE240M
    262 	 *
    263 	 * V4L2_COLORSPACE_RAW: V4L2_XFER_FUNC_NONE
    264 	 *
    265 	 * V4L2_COLORSPACE_DCI_P3: V4L2_XFER_FUNC_DCI_P3
    266 	 */
    267 	V4L2_XFER_FUNC_DEFAULT     = 0,
    268 	V4L2_XFER_FUNC_709         = 1,
    269 	V4L2_XFER_FUNC_SRGB        = 2,
    270 	V4L2_XFER_FUNC_ADOBERGB    = 3,
    271 	V4L2_XFER_FUNC_SMPTE240M   = 4,
    272 	V4L2_XFER_FUNC_NONE        = 5,
    273 	V4L2_XFER_FUNC_DCI_P3      = 6,
    274 	V4L2_XFER_FUNC_SMPTE2084   = 7,
    275 };
    276 
    277 /*
    278  * Determine how XFER_FUNC_DEFAULT should map to a proper transfer function.
    279  * This depends on the colorspace.
    280  */
    281 #define V4L2_MAP_XFER_FUNC_DEFAULT(colsp) \
    282 	((colsp) == V4L2_COLORSPACE_ADOBERGB ? V4L2_XFER_FUNC_ADOBERGB : \
    283 	 ((colsp) == V4L2_COLORSPACE_SMPTE240M ? V4L2_XFER_FUNC_SMPTE240M : \
    284 	  ((colsp) == V4L2_COLORSPACE_DCI_P3 ? V4L2_XFER_FUNC_DCI_P3 : \
    285 	   ((colsp) == V4L2_COLORSPACE_RAW ? V4L2_XFER_FUNC_NONE : \
    286 	    ((colsp) == V4L2_COLORSPACE_SRGB || (colsp) == V4L2_COLORSPACE_JPEG ? \
    287 	     V4L2_XFER_FUNC_SRGB : V4L2_XFER_FUNC_709)))))
    288 
    289 enum v4l2_ycbcr_encoding {
    290 	/*
    291 	 * Mapping of V4L2_YCBCR_ENC_DEFAULT to actual encodings for the
    292 	 * various colorspaces:
    293 	 *
    294 	 * V4L2_COLORSPACE_SMPTE170M, V4L2_COLORSPACE_470_SYSTEM_M,
    295 	 * V4L2_COLORSPACE_470_SYSTEM_BG, V4L2_COLORSPACE_SRGB,
    296 	 * V4L2_COLORSPACE_ADOBERGB and V4L2_COLORSPACE_JPEG: V4L2_YCBCR_ENC_601
    297 	 *
    298 	 * V4L2_COLORSPACE_REC709 and V4L2_COLORSPACE_DCI_P3: V4L2_YCBCR_ENC_709
    299 	 *
    300 	 * V4L2_COLORSPACE_BT2020: V4L2_YCBCR_ENC_BT2020
    301 	 *
    302 	 * V4L2_COLORSPACE_SMPTE240M: V4L2_YCBCR_ENC_SMPTE240M
    303 	 */
    304 	V4L2_YCBCR_ENC_DEFAULT        = 0,
    305 
    306 	/* ITU-R 601 -- SDTV */
    307 	V4L2_YCBCR_ENC_601            = 1,
    308 
    309 	/* Rec. 709 -- HDTV */
    310 	V4L2_YCBCR_ENC_709            = 2,
    311 
    312 	/* ITU-R 601/EN 61966-2-4 Extended Gamut -- SDTV */
    313 	V4L2_YCBCR_ENC_XV601          = 3,
    314 
    315 	/* Rec. 709/EN 61966-2-4 Extended Gamut -- HDTV */
    316 	V4L2_YCBCR_ENC_XV709          = 4,
    317 
    318 #ifndef __KERNEL__
    319 	/*
    320 	 * sYCC (Y'CbCr encoding of sRGB), identical to ENC_601. It was added
    321 	 * originally due to a misunderstanding of the sYCC standard. It should
    322 	 * not be used, instead use V4L2_YCBCR_ENC_601.
    323 	 */
    324 	V4L2_YCBCR_ENC_SYCC           = 5,
    325 #endif
    326 
    327 	/* BT.2020 Non-constant Luminance Y'CbCr */
    328 	V4L2_YCBCR_ENC_BT2020         = 6,
    329 
    330 	/* BT.2020 Constant Luminance Y'CbcCrc */
    331 	V4L2_YCBCR_ENC_BT2020_CONST_LUM = 7,
    332 
    333 	/* SMPTE 240M -- Obsolete HDTV */
    334 	V4L2_YCBCR_ENC_SMPTE240M      = 8,
    335 };
    336 
    337 /*
    338  * enum v4l2_hsv_encoding values should not collide with the ones from
    339  * enum v4l2_ycbcr_encoding.
    340  */
    341 enum v4l2_hsv_encoding {
    342 
    343 	/* Hue mapped to 0 - 179 */
    344 	V4L2_HSV_ENC_180		= 128,
    345 
    346 	/* Hue mapped to 0-255 */
    347 	V4L2_HSV_ENC_256		= 129,
    348 };
    349 
    350 /*
    351  * Determine how YCBCR_ENC_DEFAULT should map to a proper Y'CbCr encoding.
    352  * This depends on the colorspace.
    353  */
    354 #define V4L2_MAP_YCBCR_ENC_DEFAULT(colsp) \
    355 	(((colsp) == V4L2_COLORSPACE_REC709 || \
    356 	  (colsp) == V4L2_COLORSPACE_DCI_P3) ? V4L2_YCBCR_ENC_709 : \
    357 	 ((colsp) == V4L2_COLORSPACE_BT2020 ? V4L2_YCBCR_ENC_BT2020 : \
    358 	  ((colsp) == V4L2_COLORSPACE_SMPTE240M ? V4L2_YCBCR_ENC_SMPTE240M : \
    359 	   V4L2_YCBCR_ENC_601)))
    360 
    361 enum v4l2_quantization {
    362 	/*
    363 	 * The default for R'G'B' quantization is always full range, except
    364 	 * for the BT2020 colorspace. For Y'CbCr the quantization is always
    365 	 * limited range, except for COLORSPACE_JPEG, XV601 or XV709: those
    366 	 * are full range.
    367 	 */
    368 	V4L2_QUANTIZATION_DEFAULT     = 0,
    369 	V4L2_QUANTIZATION_FULL_RANGE  = 1,
    370 	V4L2_QUANTIZATION_LIM_RANGE   = 2,
    371 };
    372 
    373 /*
    374  * Determine how QUANTIZATION_DEFAULT should map to a proper quantization.
    375  * This depends on whether the image is RGB or not, the colorspace and the
    376  * Y'CbCr encoding.
    377  */
    378 #define V4L2_MAP_QUANTIZATION_DEFAULT(is_rgb_or_hsv, colsp, ycbcr_enc) \
    379 	(((is_rgb_or_hsv) && (colsp) == V4L2_COLORSPACE_BT2020) ? \
    380 	 V4L2_QUANTIZATION_LIM_RANGE : \
    381 	 (((is_rgb_or_hsv) || (ycbcr_enc) == V4L2_YCBCR_ENC_XV601 || \
    382 	  (ycbcr_enc) == V4L2_YCBCR_ENC_XV709 || (colsp) == V4L2_COLORSPACE_JPEG) ? \
    383 	 V4L2_QUANTIZATION_FULL_RANGE : V4L2_QUANTIZATION_LIM_RANGE))
    384 
    385 enum v4l2_priority {
    386 	V4L2_PRIORITY_UNSET       = 0,  /* not initialized */
    387 	V4L2_PRIORITY_BACKGROUND  = 1,
    388 	V4L2_PRIORITY_INTERACTIVE = 2,
    389 	V4L2_PRIORITY_RECORD      = 3,
    390 	V4L2_PRIORITY_DEFAULT     = V4L2_PRIORITY_INTERACTIVE,
    391 };
    392 
    393 struct v4l2_rect {
    394 	__s32   left;
    395 	__s32   top;
    396 	__u32   width;
    397 	__u32   height;
    398 };
    399 
    400 struct v4l2_fract {
    401 	__u32   numerator;
    402 	__u32   denominator;
    403 };
    404 
    405 /**
    406   * struct v4l2_capability - Describes V4L2 device caps returned by VIDIOC_QUERYCAP
    407   *
    408   * @driver:	   name of the driver module (e.g. "bttv")
    409   * @card:	   name of the card (e.g. "Hauppauge WinTV")
    410   * @bus_info:	   name of the bus (e.g. "PCI:" + pci_name(pci_dev) )
    411   * @version:	   KERNEL_VERSION
    412   * @capabilities: capabilities of the physical device as a whole
    413   * @device_caps:  capabilities accessed via this particular device (node)
    414   * @reserved:	   reserved fields for future extensions
    415   */
    416 struct v4l2_capability {
    417 	__u8	driver[16];
    418 	__u8	card[32];
    419 	__u8	bus_info[32];
    420 	__u32   version;
    421 	__u32	capabilities;
    422 	__u32	device_caps;
    423 	__u32	reserved[3];
    424 };
    425 
    426 /* Values for 'capabilities' field */
    427 #define V4L2_CAP_VIDEO_CAPTURE		0x00000001  /* Is a video capture device */
    428 #define V4L2_CAP_VIDEO_OUTPUT		0x00000002  /* Is a video output device */
    429 #define V4L2_CAP_VIDEO_OVERLAY		0x00000004  /* Can do video overlay */
    430 #define V4L2_CAP_VBI_CAPTURE		0x00000010  /* Is a raw VBI capture device */
    431 #define V4L2_CAP_VBI_OUTPUT		0x00000020  /* Is a raw VBI output device */
    432 #define V4L2_CAP_SLICED_VBI_CAPTURE	0x00000040  /* Is a sliced VBI capture device */
    433 #define V4L2_CAP_SLICED_VBI_OUTPUT	0x00000080  /* Is a sliced VBI output device */
    434 #define V4L2_CAP_RDS_CAPTURE		0x00000100  /* RDS data capture */
    435 #define V4L2_CAP_VIDEO_OUTPUT_OVERLAY	0x00000200  /* Can do video output overlay */
    436 #define V4L2_CAP_HW_FREQ_SEEK		0x00000400  /* Can do hardware frequency seek  */
    437 #define V4L2_CAP_RDS_OUTPUT		0x00000800  /* Is an RDS encoder */
    438 
    439 /* Is a video capture device that supports multiplanar formats */
    440 #define V4L2_CAP_VIDEO_CAPTURE_MPLANE	0x00001000
    441 /* Is a video output device that supports multiplanar formats */
    442 #define V4L2_CAP_VIDEO_OUTPUT_MPLANE	0x00002000
    443 /* Is a video mem-to-mem device that supports multiplanar formats */
    444 #define V4L2_CAP_VIDEO_M2M_MPLANE	0x00004000
    445 /* Is a video mem-to-mem device */
    446 #define V4L2_CAP_VIDEO_M2M		0x00008000
    447 
    448 #define V4L2_CAP_TUNER			0x00010000  /* has a tuner */
    449 #define V4L2_CAP_AUDIO			0x00020000  /* has audio support */
    450 #define V4L2_CAP_RADIO			0x00040000  /* is a radio device */
    451 #define V4L2_CAP_MODULATOR		0x00080000  /* has a modulator */
    452 
    453 #define V4L2_CAP_SDR_CAPTURE		0x00100000  /* Is a SDR capture device */
    454 #define V4L2_CAP_EXT_PIX_FORMAT		0x00200000  /* Supports the extended pixel format */
    455 #define V4L2_CAP_SDR_OUTPUT		0x00400000  /* Is a SDR output device */
    456 
    457 #define V4L2_CAP_READWRITE              0x01000000  /* read/write systemcalls */
    458 #define V4L2_CAP_ASYNCIO                0x02000000  /* async I/O */
    459 #define V4L2_CAP_STREAMING              0x04000000  /* streaming I/O ioctls */
    460 
    461 #define V4L2_CAP_TOUCH                  0x10000000  /* Is a touch device */
    462 
    463 #define V4L2_CAP_DEVICE_CAPS            0x80000000  /* sets device capabilities field */
    464 
    465 /*
    466  *	V I D E O   I M A G E   F O R M A T
    467  */
    468 struct v4l2_pix_format {
    469 	__u32         		width;
    470 	__u32			height;
    471 	__u32			pixelformat;
    472 	__u32			field;		/* enum v4l2_field */
    473 	__u32            	bytesperline;	/* for padding, zero if unused */
    474 	__u32          		sizeimage;
    475 	__u32			colorspace;	/* enum v4l2_colorspace */
    476 	__u32			priv;		/* private data, depends on pixelformat */
    477 	__u32			flags;		/* format flags (V4L2_PIX_FMT_FLAG_*) */
    478 	union {
    479 		/* enum v4l2_ycbcr_encoding */
    480 		__u32			ycbcr_enc;
    481 		/* enum v4l2_hsv_encoding */
    482 		__u32			hsv_enc;
    483 	};
    484 	__u32			quantization;	/* enum v4l2_quantization */
    485 	__u32			xfer_func;	/* enum v4l2_xfer_func */
    486 };
    487 
    488 /*      Pixel format         FOURCC                          depth  Description  */
    489 
    490 /* RGB formats */
    491 #define V4L2_PIX_FMT_RGB332  v4l2_fourcc('R', 'G', 'B', '1') /*  8  RGB-3-3-2     */
    492 #define V4L2_PIX_FMT_RGB444  v4l2_fourcc('R', '4', '4', '4') /* 16  xxxxrrrr ggggbbbb */
    493 #define V4L2_PIX_FMT_ARGB444 v4l2_fourcc('A', 'R', '1', '2') /* 16  aaaarrrr ggggbbbb */
    494 #define V4L2_PIX_FMT_XRGB444 v4l2_fourcc('X', 'R', '1', '2') /* 16  xxxxrrrr ggggbbbb */
    495 #define V4L2_PIX_FMT_RGB555  v4l2_fourcc('R', 'G', 'B', 'O') /* 16  RGB-5-5-5     */
    496 #define V4L2_PIX_FMT_ARGB555 v4l2_fourcc('A', 'R', '1', '5') /* 16  ARGB-1-5-5-5  */
    497 #define V4L2_PIX_FMT_XRGB555 v4l2_fourcc('X', 'R', '1', '5') /* 16  XRGB-1-5-5-5  */
    498 #define V4L2_PIX_FMT_RGB565  v4l2_fourcc('R', 'G', 'B', 'P') /* 16  RGB-5-6-5     */
    499 #define V4L2_PIX_FMT_RGB555X v4l2_fourcc('R', 'G', 'B', 'Q') /* 16  RGB-5-5-5 BE  */
    500 #define V4L2_PIX_FMT_ARGB555X v4l2_fourcc_be('A', 'R', '1', '5') /* 16  ARGB-5-5-5 BE */
    501 #define V4L2_PIX_FMT_XRGB555X v4l2_fourcc_be('X', 'R', '1', '5') /* 16  XRGB-5-5-5 BE */
    502 #define V4L2_PIX_FMT_RGB565X v4l2_fourcc('R', 'G', 'B', 'R') /* 16  RGB-5-6-5 BE  */
    503 #define V4L2_PIX_FMT_BGR666  v4l2_fourcc('B', 'G', 'R', 'H') /* 18  BGR-6-6-6	  */
    504 #define V4L2_PIX_FMT_BGR24   v4l2_fourcc('B', 'G', 'R', '3') /* 24  BGR-8-8-8     */
    505 #define V4L2_PIX_FMT_RGB24   v4l2_fourcc('R', 'G', 'B', '3') /* 24  RGB-8-8-8     */
    506 #define V4L2_PIX_FMT_BGR32   v4l2_fourcc('B', 'G', 'R', '4') /* 32  BGR-8-8-8-8   */
    507 #define V4L2_PIX_FMT_ABGR32  v4l2_fourcc('A', 'R', '2', '4') /* 32  BGRA-8-8-8-8  */
    508 #define V4L2_PIX_FMT_XBGR32  v4l2_fourcc('X', 'R', '2', '4') /* 32  BGRX-8-8-8-8  */
    509 #define V4L2_PIX_FMT_RGB32   v4l2_fourcc('R', 'G', 'B', '4') /* 32  RGB-8-8-8-8   */
    510 #define V4L2_PIX_FMT_ARGB32  v4l2_fourcc('B', 'A', '2', '4') /* 32  ARGB-8-8-8-8  */
    511 #define V4L2_PIX_FMT_XRGB32  v4l2_fourcc('B', 'X', '2', '4') /* 32  XRGB-8-8-8-8  */
    512 
    513 /* Grey formats */
    514 #define V4L2_PIX_FMT_GREY    v4l2_fourcc('G', 'R', 'E', 'Y') /*  8  Greyscale     */
    515 #define V4L2_PIX_FMT_Y4      v4l2_fourcc('Y', '0', '4', ' ') /*  4  Greyscale     */
    516 #define V4L2_PIX_FMT_Y6      v4l2_fourcc('Y', '0', '6', ' ') /*  6  Greyscale     */
    517 #define V4L2_PIX_FMT_Y10     v4l2_fourcc('Y', '1', '0', ' ') /* 10  Greyscale     */
    518 #define V4L2_PIX_FMT_Y12     v4l2_fourcc('Y', '1', '2', ' ') /* 12  Greyscale     */
    519 #define V4L2_PIX_FMT_Y16     v4l2_fourcc('Y', '1', '6', ' ') /* 16  Greyscale     */
    520 #define V4L2_PIX_FMT_Y16_BE  v4l2_fourcc_be('Y', '1', '6', ' ') /* 16  Greyscale BE  */
    521 
    522 /* Grey bit-packed formats */
    523 #define V4L2_PIX_FMT_Y10BPACK    v4l2_fourcc('Y', '1', '0', 'B') /* 10  Greyscale bit-packed */
    524 
    525 /* Palette formats */
    526 #define V4L2_PIX_FMT_PAL8    v4l2_fourcc('P', 'A', 'L', '8') /*  8  8-bit palette */
    527 
    528 /* Chrominance formats */
    529 #define V4L2_PIX_FMT_UV8     v4l2_fourcc('U', 'V', '8', ' ') /*  8  UV 4:4 */
    530 
    531 /* Luminance+Chrominance formats */
    532 #define V4L2_PIX_FMT_YUYV    v4l2_fourcc('Y', 'U', 'Y', 'V') /* 16  YUV 4:2:2     */
    533 #define V4L2_PIX_FMT_YYUV    v4l2_fourcc('Y', 'Y', 'U', 'V') /* 16  YUV 4:2:2     */
    534 #define V4L2_PIX_FMT_YVYU    v4l2_fourcc('Y', 'V', 'Y', 'U') /* 16 YVU 4:2:2 */
    535 #define V4L2_PIX_FMT_UYVY    v4l2_fourcc('U', 'Y', 'V', 'Y') /* 16  YUV 4:2:2     */
    536 #define V4L2_PIX_FMT_VYUY    v4l2_fourcc('V', 'Y', 'U', 'Y') /* 16  YUV 4:2:2     */
    537 #define V4L2_PIX_FMT_Y41P    v4l2_fourcc('Y', '4', '1', 'P') /* 12  YUV 4:1:1     */
    538 #define V4L2_PIX_FMT_YUV444  v4l2_fourcc('Y', '4', '4', '4') /* 16  xxxxyyyy uuuuvvvv */
    539 #define V4L2_PIX_FMT_YUV555  v4l2_fourcc('Y', 'U', 'V', 'O') /* 16  YUV-5-5-5     */
    540 #define V4L2_PIX_FMT_YUV565  v4l2_fourcc('Y', 'U', 'V', 'P') /* 16  YUV-5-6-5     */
    541 #define V4L2_PIX_FMT_YUV32   v4l2_fourcc('Y', 'U', 'V', '4') /* 32  YUV-8-8-8-8   */
    542 #define V4L2_PIX_FMT_HI240   v4l2_fourcc('H', 'I', '2', '4') /*  8  8-bit color   */
    543 #define V4L2_PIX_FMT_HM12    v4l2_fourcc('H', 'M', '1', '2') /*  8  YUV 4:2:0 16x16 macroblocks */
    544 #define V4L2_PIX_FMT_M420    v4l2_fourcc('M', '4', '2', '0') /* 12  YUV 4:2:0 2 lines y, 1 line uv interleaved */
    545 
    546 /* two planes -- one Y, one Cr + Cb interleaved  */
    547 #define V4L2_PIX_FMT_NV12    v4l2_fourcc('N', 'V', '1', '2') /* 12  Y/CbCr 4:2:0  */
    548 #define V4L2_PIX_FMT_NV21    v4l2_fourcc('N', 'V', '2', '1') /* 12  Y/CrCb 4:2:0  */
    549 #define V4L2_PIX_FMT_NV16    v4l2_fourcc('N', 'V', '1', '6') /* 16  Y/CbCr 4:2:2  */
    550 #define V4L2_PIX_FMT_NV61    v4l2_fourcc('N', 'V', '6', '1') /* 16  Y/CrCb 4:2:2  */
    551 #define V4L2_PIX_FMT_NV24    v4l2_fourcc('N', 'V', '2', '4') /* 24  Y/CbCr 4:4:4  */
    552 #define V4L2_PIX_FMT_NV42    v4l2_fourcc('N', 'V', '4', '2') /* 24  Y/CrCb 4:4:4  */
    553 
    554 /* two non contiguous planes - one Y, one Cr + Cb interleaved  */
    555 #define V4L2_PIX_FMT_NV12M   v4l2_fourcc('N', 'M', '1', '2') /* 12  Y/CbCr 4:2:0  */
    556 #define V4L2_PIX_FMT_NV21M   v4l2_fourcc('N', 'M', '2', '1') /* 21  Y/CrCb 4:2:0  */
    557 #define V4L2_PIX_FMT_NV16M   v4l2_fourcc('N', 'M', '1', '6') /* 16  Y/CbCr 4:2:2  */
    558 #define V4L2_PIX_FMT_NV61M   v4l2_fourcc('N', 'M', '6', '1') /* 16  Y/CrCb 4:2:2  */
    559 #define V4L2_PIX_FMT_NV12MT  v4l2_fourcc('T', 'M', '1', '2') /* 12  Y/CbCr 4:2:0 64x32 macroblocks */
    560 #define V4L2_PIX_FMT_NV12MT_16X16 v4l2_fourcc('V', 'M', '1', '2') /* 12  Y/CbCr 4:2:0 16x16 macroblocks */
    561 
    562 /* three planes - Y Cb, Cr */
    563 #define V4L2_PIX_FMT_YUV410  v4l2_fourcc('Y', 'U', 'V', '9') /*  9  YUV 4:1:0     */
    564 #define V4L2_PIX_FMT_YVU410  v4l2_fourcc('Y', 'V', 'U', '9') /*  9  YVU 4:1:0     */
    565 #define V4L2_PIX_FMT_YUV411P v4l2_fourcc('4', '1', '1', 'P') /* 12  YVU411 planar */
    566 #define V4L2_PIX_FMT_YUV420  v4l2_fourcc('Y', 'U', '1', '2') /* 12  YUV 4:2:0     */
    567 #define V4L2_PIX_FMT_YVU420  v4l2_fourcc('Y', 'V', '1', '2') /* 12  YVU 4:2:0     */
    568 #define V4L2_PIX_FMT_YUV422P v4l2_fourcc('4', '2', '2', 'P') /* 16  YVU422 planar */
    569 
    570 /* three non contiguous planes - Y, Cb, Cr */
    571 #define V4L2_PIX_FMT_YUV420M v4l2_fourcc('Y', 'M', '1', '2') /* 12  YUV420 planar */
    572 #define V4L2_PIX_FMT_YVU420M v4l2_fourcc('Y', 'M', '2', '1') /* 12  YVU420 planar */
    573 #define V4L2_PIX_FMT_YUV422M v4l2_fourcc('Y', 'M', '1', '6') /* 16  YUV422 planar */
    574 #define V4L2_PIX_FMT_YVU422M v4l2_fourcc('Y', 'M', '6', '1') /* 16  YVU422 planar */
    575 #define V4L2_PIX_FMT_YUV444M v4l2_fourcc('Y', 'M', '2', '4') /* 24  YUV444 planar */
    576 #define V4L2_PIX_FMT_YVU444M v4l2_fourcc('Y', 'M', '4', '2') /* 24  YVU444 planar */
    577 
    578 /* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */
    579 #define V4L2_PIX_FMT_SBGGR8  v4l2_fourcc('B', 'A', '8', '1') /*  8  BGBG.. GRGR.. */
    580 #define V4L2_PIX_FMT_SGBRG8  v4l2_fourcc('G', 'B', 'R', 'G') /*  8  GBGB.. RGRG.. */
    581 #define V4L2_PIX_FMT_SGRBG8  v4l2_fourcc('G', 'R', 'B', 'G') /*  8  GRGR.. BGBG.. */
    582 #define V4L2_PIX_FMT_SRGGB8  v4l2_fourcc('R', 'G', 'G', 'B') /*  8  RGRG.. GBGB.. */
    583 #define V4L2_PIX_FMT_SBGGR10 v4l2_fourcc('B', 'G', '1', '0') /* 10  BGBG.. GRGR.. */
    584 #define V4L2_PIX_FMT_SGBRG10 v4l2_fourcc('G', 'B', '1', '0') /* 10  GBGB.. RGRG.. */
    585 #define V4L2_PIX_FMT_SGRBG10 v4l2_fourcc('B', 'A', '1', '0') /* 10  GRGR.. BGBG.. */
    586 #define V4L2_PIX_FMT_SRGGB10 v4l2_fourcc('R', 'G', '1', '0') /* 10  RGRG.. GBGB.. */
    587 	/* 10bit raw bayer packed, 5 bytes for every 4 pixels */
    588 #define V4L2_PIX_FMT_SBGGR10P v4l2_fourcc('p', 'B', 'A', 'A')
    589 #define V4L2_PIX_FMT_SGBRG10P v4l2_fourcc('p', 'G', 'A', 'A')
    590 #define V4L2_PIX_FMT_SGRBG10P v4l2_fourcc('p', 'g', 'A', 'A')
    591 #define V4L2_PIX_FMT_SRGGB10P v4l2_fourcc('p', 'R', 'A', 'A')
    592 	/* 10bit raw bayer a-law compressed to 8 bits */
    593 #define V4L2_PIX_FMT_SBGGR10ALAW8 v4l2_fourcc('a', 'B', 'A', '8')
    594 #define V4L2_PIX_FMT_SGBRG10ALAW8 v4l2_fourcc('a', 'G', 'A', '8')
    595 #define V4L2_PIX_FMT_SGRBG10ALAW8 v4l2_fourcc('a', 'g', 'A', '8')
    596 #define V4L2_PIX_FMT_SRGGB10ALAW8 v4l2_fourcc('a', 'R', 'A', '8')
    597 	/* 10bit raw bayer DPCM compressed to 8 bits */
    598 #define V4L2_PIX_FMT_SBGGR10DPCM8 v4l2_fourcc('b', 'B', 'A', '8')
    599 #define V4L2_PIX_FMT_SGBRG10DPCM8 v4l2_fourcc('b', 'G', 'A', '8')
    600 #define V4L2_PIX_FMT_SGRBG10DPCM8 v4l2_fourcc('B', 'D', '1', '0')
    601 #define V4L2_PIX_FMT_SRGGB10DPCM8 v4l2_fourcc('b', 'R', 'A', '8')
    602 #define V4L2_PIX_FMT_SBGGR12 v4l2_fourcc('B', 'G', '1', '2') /* 12  BGBG.. GRGR.. */
    603 #define V4L2_PIX_FMT_SGBRG12 v4l2_fourcc('G', 'B', '1', '2') /* 12  GBGB.. RGRG.. */
    604 #define V4L2_PIX_FMT_SGRBG12 v4l2_fourcc('B', 'A', '1', '2') /* 12  GRGR.. BGBG.. */
    605 #define V4L2_PIX_FMT_SRGGB12 v4l2_fourcc('R', 'G', '1', '2') /* 12  RGRG.. GBGB.. */
    606 #define V4L2_PIX_FMT_SBGGR16 v4l2_fourcc('B', 'Y', 'R', '2') /* 16  BGBG.. GRGR.. */
    607 #define V4L2_PIX_FMT_SGBRG16 v4l2_fourcc('G', 'B', '1', '6') /* 16  GBGB.. RGRG.. */
    608 #define V4L2_PIX_FMT_SGRBG16 v4l2_fourcc('G', 'R', '1', '6') /* 16  GRGR.. BGBG.. */
    609 #define V4L2_PIX_FMT_SRGGB16 v4l2_fourcc('R', 'G', '1', '6') /* 16  RGRG.. GBGB.. */
    610 
    611 /* HSV formats */
    612 #define V4L2_PIX_FMT_HSV24 v4l2_fourcc('H', 'S', 'V', '3')
    613 #define V4L2_PIX_FMT_HSV32 v4l2_fourcc('H', 'S', 'V', '4')
    614 
    615 /* compressed formats */
    616 #define V4L2_PIX_FMT_MJPEG    v4l2_fourcc('M', 'J', 'P', 'G') /* Motion-JPEG   */
    617 #define V4L2_PIX_FMT_JPEG     v4l2_fourcc('J', 'P', 'E', 'G') /* JFIF JPEG     */
    618 #define V4L2_PIX_FMT_DV       v4l2_fourcc('d', 'v', 's', 'd') /* 1394          */
    619 #define V4L2_PIX_FMT_MPEG     v4l2_fourcc('M', 'P', 'E', 'G') /* MPEG-1/2/4 Multiplexed */
    620 #define V4L2_PIX_FMT_H264     v4l2_fourcc('H', '2', '6', '4') /* H264 with start codes */
    621 #define V4L2_PIX_FMT_H264_NO_SC v4l2_fourcc('A', 'V', 'C', '1') /* H264 without start codes */
    622 #define V4L2_PIX_FMT_H264_MVC v4l2_fourcc('M', '2', '6', '4') /* H264 MVC */
    623 #define V4L2_PIX_FMT_H263     v4l2_fourcc('H', '2', '6', '3') /* H263          */
    624 #define V4L2_PIX_FMT_MPEG1    v4l2_fourcc('M', 'P', 'G', '1') /* MPEG-1 ES     */
    625 #define V4L2_PIX_FMT_MPEG2    v4l2_fourcc('M', 'P', 'G', '2') /* MPEG-2 ES     */
    626 #define V4L2_PIX_FMT_MPEG4    v4l2_fourcc('M', 'P', 'G', '4') /* MPEG-4 part 2 ES */
    627 #define V4L2_PIX_FMT_XVID     v4l2_fourcc('X', 'V', 'I', 'D') /* Xvid           */
    628 #define V4L2_PIX_FMT_VC1_ANNEX_G v4l2_fourcc('V', 'C', '1', 'G') /* SMPTE 421M Annex G compliant stream */
    629 #define V4L2_PIX_FMT_VC1_ANNEX_L v4l2_fourcc('V', 'C', '1', 'L') /* SMPTE 421M Annex L compliant stream */
    630 #define V4L2_PIX_FMT_VP8      v4l2_fourcc('V', 'P', '8', '0') /* VP8 */
    631 #define V4L2_PIX_FMT_VP9      v4l2_fourcc('V', 'P', '9', '0') /* VP9 */
    632 
    633 /*  Vendor-specific formats   */
    634 #define V4L2_PIX_FMT_CPIA1    v4l2_fourcc('C', 'P', 'I', 'A') /* cpia1 YUV */
    635 #define V4L2_PIX_FMT_WNVA     v4l2_fourcc('W', 'N', 'V', 'A') /* Winnov hw compress */
    636 #define V4L2_PIX_FMT_SN9C10X  v4l2_fourcc('S', '9', '1', '0') /* SN9C10x compression */
    637 #define V4L2_PIX_FMT_SN9C20X_I420 v4l2_fourcc('S', '9', '2', '0') /* SN9C20x YUV 4:2:0 */
    638 #define V4L2_PIX_FMT_PWC1     v4l2_fourcc('P', 'W', 'C', '1') /* pwc older webcam */
    639 #define V4L2_PIX_FMT_PWC2     v4l2_fourcc('P', 'W', 'C', '2') /* pwc newer webcam */
    640 #define V4L2_PIX_FMT_ET61X251 v4l2_fourcc('E', '6', '2', '5') /* ET61X251 compression */
    641 #define V4L2_PIX_FMT_SPCA501  v4l2_fourcc('S', '5', '0', '1') /* YUYV per line */
    642 #define V4L2_PIX_FMT_SPCA505  v4l2_fourcc('S', '5', '0', '5') /* YYUV per line */
    643 #define V4L2_PIX_FMT_SPCA508  v4l2_fourcc('S', '5', '0', '8') /* YUVY per line */
    644 #define V4L2_PIX_FMT_SPCA561  v4l2_fourcc('S', '5', '6', '1') /* compressed GBRG bayer */
    645 #define V4L2_PIX_FMT_PAC207   v4l2_fourcc('P', '2', '0', '7') /* compressed BGGR bayer */
    646 #define V4L2_PIX_FMT_MR97310A v4l2_fourcc('M', '3', '1', '0') /* compressed BGGR bayer */
    647 #define V4L2_PIX_FMT_JL2005BCD v4l2_fourcc('J', 'L', '2', '0') /* compressed RGGB bayer */
    648 #define V4L2_PIX_FMT_SN9C2028 v4l2_fourcc('S', 'O', 'N', 'X') /* compressed GBRG bayer */
    649 #define V4L2_PIX_FMT_SQ905C   v4l2_fourcc('9', '0', '5', 'C') /* compressed RGGB bayer */
    650 #define V4L2_PIX_FMT_PJPG     v4l2_fourcc('P', 'J', 'P', 'G') /* Pixart 73xx JPEG */
    651 #define V4L2_PIX_FMT_OV511    v4l2_fourcc('O', '5', '1', '1') /* ov511 JPEG */
    652 #define V4L2_PIX_FMT_OV518    v4l2_fourcc('O', '5', '1', '8') /* ov518 JPEG */
    653 #define V4L2_PIX_FMT_STV0680  v4l2_fourcc('S', '6', '8', '0') /* stv0680 bayer */
    654 #define V4L2_PIX_FMT_TM6000   v4l2_fourcc('T', 'M', '6', '0') /* tm5600/tm60x0 */
    655 #define V4L2_PIX_FMT_CIT_YYVYUY v4l2_fourcc('C', 'I', 'T', 'V') /* one line of Y then 1 line of VYUY */
    656 #define V4L2_PIX_FMT_KONICA420  v4l2_fourcc('K', 'O', 'N', 'I') /* YUV420 planar in blocks of 256 pixels */
    657 #define V4L2_PIX_FMT_JPGL	v4l2_fourcc('J', 'P', 'G', 'L') /* JPEG-Lite */
    658 #define V4L2_PIX_FMT_SE401      v4l2_fourcc('S', '4', '0', '1') /* se401 janggu compressed rgb */
    659 #define V4L2_PIX_FMT_S5C_UYVY_JPG v4l2_fourcc('S', '5', 'C', 'I') /* S5C73M3 interleaved UYVY/JPEG */
    660 #define V4L2_PIX_FMT_Y8I      v4l2_fourcc('Y', '8', 'I', ' ') /* Greyscale 8-bit L/R interleaved */
    661 #define V4L2_PIX_FMT_Y12I     v4l2_fourcc('Y', '1', '2', 'I') /* Greyscale 12-bit L/R interleaved */
    662 #define V4L2_PIX_FMT_Z16      v4l2_fourcc('Z', '1', '6', ' ') /* Depth data 16-bit */
    663 #define V4L2_PIX_FMT_MT21C    v4l2_fourcc('M', 'T', '2', '1') /* Mediatek compressed block mode  */
    664 
    665 /* SDR formats - used only for Software Defined Radio devices */
    666 #define V4L2_SDR_FMT_CU8          v4l2_fourcc('C', 'U', '0', '8') /* IQ u8 */
    667 #define V4L2_SDR_FMT_CU16LE       v4l2_fourcc('C', 'U', '1', '6') /* IQ u16le */
    668 #define V4L2_SDR_FMT_CS8          v4l2_fourcc('C', 'S', '0', '8') /* complex s8 */
    669 #define V4L2_SDR_FMT_CS14LE       v4l2_fourcc('C', 'S', '1', '4') /* complex s14le */
    670 #define V4L2_SDR_FMT_RU12LE       v4l2_fourcc('R', 'U', '1', '2') /* real u12le */
    671 
    672 /* Touch formats - used for Touch devices */
    673 #define V4L2_TCH_FMT_DELTA_TD16	v4l2_fourcc('T', 'D', '1', '6') /* 16-bit signed deltas */
    674 #define V4L2_TCH_FMT_DELTA_TD08	v4l2_fourcc('T', 'D', '0', '8') /* 8-bit signed deltas */
    675 #define V4L2_TCH_FMT_TU16	v4l2_fourcc('T', 'U', '1', '6') /* 16-bit unsigned touch data */
    676 #define V4L2_TCH_FMT_TU08	v4l2_fourcc('T', 'U', '0', '8') /* 8-bit unsigned touch data */
    677 
    678 /* priv field value to indicates that subsequent fields are valid. */
    679 #define V4L2_PIX_FMT_PRIV_MAGIC		0xfeedcafe
    680 
    681 /* Flags */
    682 #define V4L2_PIX_FMT_FLAG_PREMUL_ALPHA	0x00000001
    683 
    684 /*
    685  *	F O R M A T   E N U M E R A T I O N
    686  */
    687 struct v4l2_fmtdesc {
    688 	__u32		    index;             /* Format number      */
    689 	__u32		    type;              /* enum v4l2_buf_type */
    690 	__u32               flags;
    691 	__u8		    description[32];   /* Description string */
    692 	__u32		    pixelformat;       /* Format fourcc      */
    693 	__u32		    reserved[4];
    694 };
    695 
    696 #define V4L2_FMT_FLAG_COMPRESSED 0x0001
    697 #define V4L2_FMT_FLAG_EMULATED   0x0002
    698 
    699 	/* Frame Size and frame rate enumeration */
    700 /*
    701  *	F R A M E   S I Z E   E N U M E R A T I O N
    702  */
    703 enum v4l2_frmsizetypes {
    704 	V4L2_FRMSIZE_TYPE_DISCRETE	= 1,
    705 	V4L2_FRMSIZE_TYPE_CONTINUOUS	= 2,
    706 	V4L2_FRMSIZE_TYPE_STEPWISE	= 3,
    707 };
    708 
    709 struct v4l2_frmsize_discrete {
    710 	__u32			width;		/* Frame width [pixel] */
    711 	__u32			height;		/* Frame height [pixel] */
    712 };
    713 
    714 struct v4l2_frmsize_stepwise {
    715 	__u32			min_width;	/* Minimum frame width [pixel] */
    716 	__u32			max_width;	/* Maximum frame width [pixel] */
    717 	__u32			step_width;	/* Frame width step size [pixel] */
    718 	__u32			min_height;	/* Minimum frame height [pixel] */
    719 	__u32			max_height;	/* Maximum frame height [pixel] */
    720 	__u32			step_height;	/* Frame height step size [pixel] */
    721 };
    722 
    723 struct v4l2_frmsizeenum {
    724 	__u32			index;		/* Frame size number */
    725 	__u32			pixel_format;	/* Pixel format */
    726 	__u32			type;		/* Frame size type the device supports. */
    727 
    728 	union {					/* Frame size */
    729 		struct v4l2_frmsize_discrete	discrete;
    730 		struct v4l2_frmsize_stepwise	stepwise;
    731 	};
    732 
    733 	__u32   reserved[2];			/* Reserved space for future use */
    734 };
    735 
    736 /*
    737  *	F R A M E   R A T E   E N U M E R A T I O N
    738  */
    739 enum v4l2_frmivaltypes {
    740 	V4L2_FRMIVAL_TYPE_DISCRETE	= 1,
    741 	V4L2_FRMIVAL_TYPE_CONTINUOUS	= 2,
    742 	V4L2_FRMIVAL_TYPE_STEPWISE	= 3,
    743 };
    744 
    745 struct v4l2_frmival_stepwise {
    746 	struct v4l2_fract	min;		/* Minimum frame interval [s] */
    747 	struct v4l2_fract	max;		/* Maximum frame interval [s] */
    748 	struct v4l2_fract	step;		/* Frame interval step size [s] */
    749 };
    750 
    751 struct v4l2_frmivalenum {
    752 	__u32			index;		/* Frame format index */
    753 	__u32			pixel_format;	/* Pixel format */
    754 	__u32			width;		/* Frame width */
    755 	__u32			height;		/* Frame height */
    756 	__u32			type;		/* Frame interval type the device supports. */
    757 
    758 	union {					/* Frame interval */
    759 		struct v4l2_fract		discrete;
    760 		struct v4l2_frmival_stepwise	stepwise;
    761 	};
    762 
    763 	__u32	reserved[2];			/* Reserved space for future use */
    764 };
    765 
    766 /*
    767  *	T I M E C O D E
    768  */
    769 struct v4l2_timecode {
    770 	__u32	type;
    771 	__u32	flags;
    772 	__u8	frames;
    773 	__u8	seconds;
    774 	__u8	minutes;
    775 	__u8	hours;
    776 	__u8	userbits[4];
    777 };
    778 
    779 /*  Type  */
    780 #define V4L2_TC_TYPE_24FPS		1
    781 #define V4L2_TC_TYPE_25FPS		2
    782 #define V4L2_TC_TYPE_30FPS		3
    783 #define V4L2_TC_TYPE_50FPS		4
    784 #define V4L2_TC_TYPE_60FPS		5
    785 
    786 /*  Flags  */
    787 #define V4L2_TC_FLAG_DROPFRAME		0x0001 /* "drop-frame" mode */
    788 #define V4L2_TC_FLAG_COLORFRAME		0x0002
    789 #define V4L2_TC_USERBITS_field		0x000C
    790 #define V4L2_TC_USERBITS_USERDEFINED	0x0000
    791 #define V4L2_TC_USERBITS_8BITCHARS	0x0008
    792 /* The above is based on SMPTE timecodes */
    793 
    794 struct v4l2_jpegcompression {
    795 	int quality;
    796 
    797 	int  APPn;              /* Number of APP segment to be written,
    798 				 * must be 0..15 */
    799 	int  APP_len;           /* Length of data in JPEG APPn segment */
    800 	char APP_data[60];      /* Data in the JPEG APPn segment. */
    801 
    802 	int  COM_len;           /* Length of data in JPEG COM segment */
    803 	char COM_data[60];      /* Data in JPEG COM segment */
    804 
    805 	__u32 jpeg_markers;     /* Which markers should go into the JPEG
    806 				 * output. Unless you exactly know what
    807 				 * you do, leave them untouched.
    808 				 * Including less markers will make the
    809 				 * resulting code smaller, but there will
    810 				 * be fewer applications which can read it.
    811 				 * The presence of the APP and COM marker
    812 				 * is influenced by APP_len and COM_len
    813 				 * ONLY, not by this property! */
    814 
    815 #define V4L2_JPEG_MARKER_DHT (1<<3)    /* Define Huffman Tables */
    816 #define V4L2_JPEG_MARKER_DQT (1<<4)    /* Define Quantization Tables */
    817 #define V4L2_JPEG_MARKER_DRI (1<<5)    /* Define Restart Interval */
    818 #define V4L2_JPEG_MARKER_COM (1<<6)    /* Comment segment */
    819 #define V4L2_JPEG_MARKER_APP (1<<7)    /* App segment, driver will
    820 					* always use APP0 */
    821 };
    822 
    823 /*
    824  *	M E M O R Y - M A P P I N G   B U F F E R S
    825  */
    826 struct v4l2_requestbuffers {
    827 	__u32			count;
    828 	__u32			type;		/* enum v4l2_buf_type */
    829 	__u32			memory;		/* enum v4l2_memory */
    830 	__u32			reserved[2];
    831 };
    832 
    833 /**
    834  * struct v4l2_plane - plane info for multi-planar buffers
    835  * @bytesused:		number of bytes occupied by data in the plane (payload)
    836  * @length:		size of this plane (NOT the payload) in bytes
    837  * @mem_offset:		when memory in the associated struct v4l2_buffer is
    838  *			V4L2_MEMORY_MMAP, equals the offset from the start of
    839  *			the device memory for this plane (or is a "cookie" that
    840  *			should be passed to mmap() called on the video node)
    841  * @userptr:		when memory is V4L2_MEMORY_USERPTR, a userspace pointer
    842  *			pointing to this plane
    843  * @fd:			when memory is V4L2_MEMORY_DMABUF, a userspace file
    844  *			descriptor associated with this plane
    845  * @data_offset:	offset in the plane to the start of data; usually 0,
    846  *			unless there is a header in front of the data
    847  *
    848  * Multi-planar buffers consist of one or more planes, e.g. an YCbCr buffer
    849  * with two planes can have one plane for Y, and another for interleaved CbCr
    850  * components. Each plane can reside in a separate memory buffer, or even in
    851  * a completely separate memory node (e.g. in embedded devices).
    852  */
    853 struct v4l2_plane {
    854 	__u32			bytesused;
    855 	__u32			length;
    856 	union {
    857 		__u32		mem_offset;
    858 		unsigned long	userptr;
    859 		__s32		fd;
    860 	} m;
    861 	__u32			data_offset;
    862 	__u32			reserved[11];
    863 };
    864 
    865 /**
    866  * struct v4l2_buffer - video buffer info
    867  * @index:	id number of the buffer
    868  * @type:	enum v4l2_buf_type; buffer type (type == *_MPLANE for
    869  *		multiplanar buffers);
    870  * @bytesused:	number of bytes occupied by data in the buffer (payload);
    871  *		unused (set to 0) for multiplanar buffers
    872  * @flags:	buffer informational flags
    873  * @field:	enum v4l2_field; field order of the image in the buffer
    874  * @timestamp:	frame timestamp
    875  * @timecode:	frame timecode
    876  * @sequence:	sequence count of this frame
    877  * @memory:	enum v4l2_memory; the method, in which the actual video data is
    878  *		passed
    879  * @offset:	for non-multiplanar buffers with memory == V4L2_MEMORY_MMAP;
    880  *		offset from the start of the device memory for this plane,
    881  *		(or a "cookie" that should be passed to mmap() as offset)
    882  * @userptr:	for non-multiplanar buffers with memory == V4L2_MEMORY_USERPTR;
    883  *		a userspace pointer pointing to this buffer
    884  * @fd:		for non-multiplanar buffers with memory == V4L2_MEMORY_DMABUF;
    885  *		a userspace file descriptor associated with this buffer
    886  * @planes:	for multiplanar buffers; userspace pointer to the array of plane
    887  *		info structs for this buffer
    888  * @length:	size in bytes of the buffer (NOT its payload) for single-plane
    889  *		buffers (when type != *_MPLANE); number of elements in the
    890  *		planes array for multi-plane buffers
    891  *
    892  * Contains data exchanged by application and driver using one of the Streaming
    893  * I/O methods.
    894  */
    895 struct v4l2_buffer {
    896 	__u32			index;
    897 	__u32			type;
    898 	__u32			bytesused;
    899 	__u32			flags;
    900 	__u32			field;
    901 	struct timeval		timestamp;
    902 	struct v4l2_timecode	timecode;
    903 	__u32			sequence;
    904 
    905 	/* memory location */
    906 	__u32			memory;
    907 	union {
    908 		__u32           offset;
    909 		unsigned long   userptr;
    910 		struct v4l2_plane *planes;
    911 		__s32		fd;
    912 	} m;
    913 	__u32			length;
    914 	__u32			reserved2;
    915 	__u32			reserved;
    916 };
    917 
    918 /*  Flags for 'flags' field */
    919 /* Buffer is mapped (flag) */
    920 #define V4L2_BUF_FLAG_MAPPED			0x00000001
    921 /* Buffer is queued for processing */
    922 #define V4L2_BUF_FLAG_QUEUED			0x00000002
    923 /* Buffer is ready */
    924 #define V4L2_BUF_FLAG_DONE			0x00000004
    925 /* Image is a keyframe (I-frame) */
    926 #define V4L2_BUF_FLAG_KEYFRAME			0x00000008
    927 /* Image is a P-frame */
    928 #define V4L2_BUF_FLAG_PFRAME			0x00000010
    929 /* Image is a B-frame */
    930 #define V4L2_BUF_FLAG_BFRAME			0x00000020
    931 /* Buffer is ready, but the data contained within is corrupted. */
    932 #define V4L2_BUF_FLAG_ERROR			0x00000040
    933 /* timecode field is valid */
    934 #define V4L2_BUF_FLAG_TIMECODE			0x00000100
    935 /* Buffer is prepared for queuing */
    936 #define V4L2_BUF_FLAG_PREPARED			0x00000400
    937 /* Cache handling flags */
    938 #define V4L2_BUF_FLAG_NO_CACHE_INVALIDATE	0x00000800
    939 #define V4L2_BUF_FLAG_NO_CACHE_CLEAN		0x00001000
    940 /* Timestamp type */
    941 #define V4L2_BUF_FLAG_TIMESTAMP_MASK		0x0000e000
    942 #define V4L2_BUF_FLAG_TIMESTAMP_UNKNOWN		0x00000000
    943 #define V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC	0x00002000
    944 #define V4L2_BUF_FLAG_TIMESTAMP_COPY		0x00004000
    945 /* Timestamp sources. */
    946 #define V4L2_BUF_FLAG_TSTAMP_SRC_MASK		0x00070000
    947 #define V4L2_BUF_FLAG_TSTAMP_SRC_EOF		0x00000000
    948 #define V4L2_BUF_FLAG_TSTAMP_SRC_SOE		0x00010000
    949 /* mem2mem encoder/decoder */
    950 #define V4L2_BUF_FLAG_LAST			0x00100000
    951 
    952 /**
    953  * struct v4l2_exportbuffer - export of video buffer as DMABUF file descriptor
    954  *
    955  * @index:	id number of the buffer
    956  * @type:	enum v4l2_buf_type; buffer type (type == *_MPLANE for
    957  *		multiplanar buffers);
    958  * @plane:	index of the plane to be exported, 0 for single plane queues
    959  * @flags:	flags for newly created file, currently only O_CLOEXEC is
    960  *		supported, refer to manual of open syscall for more details
    961  * @fd:		file descriptor associated with DMABUF (set by driver)
    962  *
    963  * Contains data used for exporting a video buffer as DMABUF file descriptor.
    964  * The buffer is identified by a 'cookie' returned by VIDIOC_QUERYBUF
    965  * (identical to the cookie used to mmap() the buffer to userspace). All
    966  * reserved fields must be set to zero. The field reserved0 is expected to
    967  * become a structure 'type' allowing an alternative layout of the structure
    968  * content. Therefore this field should not be used for any other extensions.
    969  */
    970 struct v4l2_exportbuffer {
    971 	__u32		type; /* enum v4l2_buf_type */
    972 	__u32		index;
    973 	__u32		plane;
    974 	__u32		flags;
    975 	__s32		fd;
    976 	__u32		reserved[11];
    977 };
    978 
    979 /*
    980  *	O V E R L A Y   P R E V I E W
    981  */
    982 struct v4l2_framebuffer {
    983 	__u32			capability;
    984 	__u32			flags;
    985 /* FIXME: in theory we should pass something like PCI device + memory
    986  * region + offset instead of some physical address */
    987 	void                    *base;
    988 	struct {
    989 		__u32		width;
    990 		__u32		height;
    991 		__u32		pixelformat;
    992 		__u32		field;		/* enum v4l2_field */
    993 		__u32		bytesperline;	/* for padding, zero if unused */
    994 		__u32		sizeimage;
    995 		__u32		colorspace;	/* enum v4l2_colorspace */
    996 		__u32		priv;		/* reserved field, set to 0 */
    997 	} fmt;
    998 };
    999 /*  Flags for the 'capability' field. Read only */
   1000 #define V4L2_FBUF_CAP_EXTERNOVERLAY	0x0001
   1001 #define V4L2_FBUF_CAP_CHROMAKEY		0x0002
   1002 #define V4L2_FBUF_CAP_LIST_CLIPPING     0x0004
   1003 #define V4L2_FBUF_CAP_BITMAP_CLIPPING	0x0008
   1004 #define V4L2_FBUF_CAP_LOCAL_ALPHA	0x0010
   1005 #define V4L2_FBUF_CAP_GLOBAL_ALPHA	0x0020
   1006 #define V4L2_FBUF_CAP_LOCAL_INV_ALPHA	0x0040
   1007 #define V4L2_FBUF_CAP_SRC_CHROMAKEY	0x0080
   1008 /*  Flags for the 'flags' field. */
   1009 #define V4L2_FBUF_FLAG_PRIMARY		0x0001
   1010 #define V4L2_FBUF_FLAG_OVERLAY		0x0002
   1011 #define V4L2_FBUF_FLAG_CHROMAKEY	0x0004
   1012 #define V4L2_FBUF_FLAG_LOCAL_ALPHA	0x0008
   1013 #define V4L2_FBUF_FLAG_GLOBAL_ALPHA	0x0010
   1014 #define V4L2_FBUF_FLAG_LOCAL_INV_ALPHA	0x0020
   1015 #define V4L2_FBUF_FLAG_SRC_CHROMAKEY	0x0040
   1016 
   1017 struct v4l2_clip {
   1018 	struct v4l2_rect        c;
   1019 	struct v4l2_clip	__user *next;
   1020 };
   1021 
   1022 struct v4l2_window {
   1023 	struct v4l2_rect        w;
   1024 	__u32			field;	 /* enum v4l2_field */
   1025 	__u32			chromakey;
   1026 	struct v4l2_clip	__user *clips;
   1027 	__u32			clipcount;
   1028 	void			__user *bitmap;
   1029 	__u8                    global_alpha;
   1030 };
   1031 
   1032 /*
   1033  *	C A P T U R E   P A R A M E T E R S
   1034  */
   1035 struct v4l2_captureparm {
   1036 	__u32		   capability;	  /*  Supported modes */
   1037 	__u32		   capturemode;	  /*  Current mode */
   1038 	struct v4l2_fract  timeperframe;  /*  Time per frame in seconds */
   1039 	__u32		   extendedmode;  /*  Driver-specific extensions */
   1040 	__u32              readbuffers;   /*  # of buffers for read */
   1041 	__u32		   reserved[4];
   1042 };
   1043 
   1044 /*  Flags for 'capability' and 'capturemode' fields */
   1045 #define V4L2_MODE_HIGHQUALITY	0x0001	/*  High quality imaging mode */
   1046 #define V4L2_CAP_TIMEPERFRAME	0x1000	/*  timeperframe field is supported */
   1047 
   1048 struct v4l2_outputparm {
   1049 	__u32		   capability;	 /*  Supported modes */
   1050 	__u32		   outputmode;	 /*  Current mode */
   1051 	struct v4l2_fract  timeperframe; /*  Time per frame in seconds */
   1052 	__u32		   extendedmode; /*  Driver-specific extensions */
   1053 	__u32              writebuffers; /*  # of buffers for write */
   1054 	__u32		   reserved[4];
   1055 };
   1056 
   1057 /*
   1058  *	I N P U T   I M A G E   C R O P P I N G
   1059  */
   1060 struct v4l2_cropcap {
   1061 	__u32			type;	/* enum v4l2_buf_type */
   1062 	struct v4l2_rect        bounds;
   1063 	struct v4l2_rect        defrect;
   1064 	struct v4l2_fract       pixelaspect;
   1065 };
   1066 
   1067 struct v4l2_crop {
   1068 	__u32			type;	/* enum v4l2_buf_type */
   1069 	struct v4l2_rect        c;
   1070 };
   1071 
   1072 /**
   1073  * struct v4l2_selection - selection info
   1074  * @type:	buffer type (do not use *_MPLANE types)
   1075  * @target:	Selection target, used to choose one of possible rectangles;
   1076  *		defined in v4l2-common.h; V4L2_SEL_TGT_* .
   1077  * @flags:	constraints flags, defined in v4l2-common.h; V4L2_SEL_FLAG_*.
   1078  * @r:		coordinates of selection window
   1079  * @reserved:	for future use, rounds structure size to 64 bytes, set to zero
   1080  *
   1081  * Hardware may use multiple helper windows to process a video stream.
   1082  * The structure is used to exchange this selection areas between
   1083  * an application and a driver.
   1084  */
   1085 struct v4l2_selection {
   1086 	__u32			type;
   1087 	__u32			target;
   1088 	__u32                   flags;
   1089 	struct v4l2_rect        r;
   1090 	__u32                   reserved[9];
   1091 };
   1092 
   1093 
   1094 /*
   1095  *      A N A L O G   V I D E O   S T A N D A R D
   1096  */
   1097 
   1098 typedef __u64 v4l2_std_id;
   1099 
   1100 /* one bit for each */
   1101 #define V4L2_STD_PAL_B          ((v4l2_std_id)0x00000001)
   1102 #define V4L2_STD_PAL_B1         ((v4l2_std_id)0x00000002)
   1103 #define V4L2_STD_PAL_G          ((v4l2_std_id)0x00000004)
   1104 #define V4L2_STD_PAL_H          ((v4l2_std_id)0x00000008)
   1105 #define V4L2_STD_PAL_I          ((v4l2_std_id)0x00000010)
   1106 #define V4L2_STD_PAL_D          ((v4l2_std_id)0x00000020)
   1107 #define V4L2_STD_PAL_D1         ((v4l2_std_id)0x00000040)
   1108 #define V4L2_STD_PAL_K          ((v4l2_std_id)0x00000080)
   1109 
   1110 #define V4L2_STD_PAL_M          ((v4l2_std_id)0x00000100)
   1111 #define V4L2_STD_PAL_N          ((v4l2_std_id)0x00000200)
   1112 #define V4L2_STD_PAL_Nc         ((v4l2_std_id)0x00000400)
   1113 #define V4L2_STD_PAL_60         ((v4l2_std_id)0x00000800)
   1114 
   1115 #define V4L2_STD_NTSC_M         ((v4l2_std_id)0x00001000)	/* BTSC */
   1116 #define V4L2_STD_NTSC_M_JP      ((v4l2_std_id)0x00002000)	/* EIA-J */
   1117 #define V4L2_STD_NTSC_443       ((v4l2_std_id)0x00004000)
   1118 #define V4L2_STD_NTSC_M_KR      ((v4l2_std_id)0x00008000)	/* FM A2 */
   1119 
   1120 #define V4L2_STD_SECAM_B        ((v4l2_std_id)0x00010000)
   1121 #define V4L2_STD_SECAM_D        ((v4l2_std_id)0x00020000)
   1122 #define V4L2_STD_SECAM_G        ((v4l2_std_id)0x00040000)
   1123 #define V4L2_STD_SECAM_H        ((v4l2_std_id)0x00080000)
   1124 #define V4L2_STD_SECAM_K        ((v4l2_std_id)0x00100000)
   1125 #define V4L2_STD_SECAM_K1       ((v4l2_std_id)0x00200000)
   1126 #define V4L2_STD_SECAM_L        ((v4l2_std_id)0x00400000)
   1127 #define V4L2_STD_SECAM_LC       ((v4l2_std_id)0x00800000)
   1128 
   1129 /* ATSC/HDTV */
   1130 #define V4L2_STD_ATSC_8_VSB     ((v4l2_std_id)0x01000000)
   1131 #define V4L2_STD_ATSC_16_VSB    ((v4l2_std_id)0x02000000)
   1132 
   1133 /* FIXME:
   1134    Although std_id is 64 bits, there is an issue on PPC32 architecture that
   1135    makes switch(__u64) to break. So, there's a hack on v4l2-common.c rounding
   1136    this value to 32 bits.
   1137    As, currently, the max value is for V4L2_STD_ATSC_16_VSB (30 bits wide),
   1138    it should work fine. However, if needed to add more than two standards,
   1139    v4l2-common.c should be fixed.
   1140  */
   1141 
   1142 /*
   1143  * Some macros to merge video standards in order to make live easier for the
   1144  * drivers and V4L2 applications
   1145  */
   1146 
   1147 /*
   1148  * "Common" NTSC/M - It should be noticed that V4L2_STD_NTSC_443 is
   1149  * Missing here.
   1150  */
   1151 #define V4L2_STD_NTSC           (V4L2_STD_NTSC_M	|\
   1152 				 V4L2_STD_NTSC_M_JP     |\
   1153 				 V4L2_STD_NTSC_M_KR)
   1154 /* Secam macros */
   1155 #define V4L2_STD_SECAM_DK      	(V4L2_STD_SECAM_D	|\
   1156 				 V4L2_STD_SECAM_K	|\
   1157 				 V4L2_STD_SECAM_K1)
   1158 /* All Secam Standards */
   1159 #define V4L2_STD_SECAM		(V4L2_STD_SECAM_B	|\
   1160 				 V4L2_STD_SECAM_G	|\
   1161 				 V4L2_STD_SECAM_H	|\
   1162 				 V4L2_STD_SECAM_DK	|\
   1163 				 V4L2_STD_SECAM_L       |\
   1164 				 V4L2_STD_SECAM_LC)
   1165 /* PAL macros */
   1166 #define V4L2_STD_PAL_BG		(V4L2_STD_PAL_B		|\
   1167 				 V4L2_STD_PAL_B1	|\
   1168 				 V4L2_STD_PAL_G)
   1169 #define V4L2_STD_PAL_DK		(V4L2_STD_PAL_D		|\
   1170 				 V4L2_STD_PAL_D1	|\
   1171 				 V4L2_STD_PAL_K)
   1172 /*
   1173  * "Common" PAL - This macro is there to be compatible with the old
   1174  * V4L1 concept of "PAL": /BGDKHI.
   1175  * Several PAL standards are missing here: /M, /N and /Nc
   1176  */
   1177 #define V4L2_STD_PAL		(V4L2_STD_PAL_BG	|\
   1178 				 V4L2_STD_PAL_DK	|\
   1179 				 V4L2_STD_PAL_H		|\
   1180 				 V4L2_STD_PAL_I)
   1181 /* Chroma "agnostic" standards */
   1182 #define V4L2_STD_B		(V4L2_STD_PAL_B		|\
   1183 				 V4L2_STD_PAL_B1	|\
   1184 				 V4L2_STD_SECAM_B)
   1185 #define V4L2_STD_G		(V4L2_STD_PAL_G		|\
   1186 				 V4L2_STD_SECAM_G)
   1187 #define V4L2_STD_H		(V4L2_STD_PAL_H		|\
   1188 				 V4L2_STD_SECAM_H)
   1189 #define V4L2_STD_L		(V4L2_STD_SECAM_L	|\
   1190 				 V4L2_STD_SECAM_LC)
   1191 #define V4L2_STD_GH		(V4L2_STD_G		|\
   1192 				 V4L2_STD_H)
   1193 #define V4L2_STD_DK		(V4L2_STD_PAL_DK	|\
   1194 				 V4L2_STD_SECAM_DK)
   1195 #define V4L2_STD_BG		(V4L2_STD_B		|\
   1196 				 V4L2_STD_G)
   1197 #define V4L2_STD_MN		(V4L2_STD_PAL_M		|\
   1198 				 V4L2_STD_PAL_N		|\
   1199 				 V4L2_STD_PAL_Nc	|\
   1200 				 V4L2_STD_NTSC)
   1201 
   1202 /* Standards where MTS/BTSC stereo could be found */
   1203 #define V4L2_STD_MTS		(V4L2_STD_NTSC_M	|\
   1204 				 V4L2_STD_PAL_M		|\
   1205 				 V4L2_STD_PAL_N		|\
   1206 				 V4L2_STD_PAL_Nc)
   1207 
   1208 /* Standards for Countries with 60Hz Line frequency */
   1209 #define V4L2_STD_525_60		(V4L2_STD_PAL_M		|\
   1210 				 V4L2_STD_PAL_60	|\
   1211 				 V4L2_STD_NTSC		|\
   1212 				 V4L2_STD_NTSC_443)
   1213 /* Standards for Countries with 50Hz Line frequency */
   1214 #define V4L2_STD_625_50		(V4L2_STD_PAL		|\
   1215 				 V4L2_STD_PAL_N		|\
   1216 				 V4L2_STD_PAL_Nc	|\
   1217 				 V4L2_STD_SECAM)
   1218 
   1219 #define V4L2_STD_ATSC           (V4L2_STD_ATSC_8_VSB    |\
   1220 				 V4L2_STD_ATSC_16_VSB)
   1221 /* Macros with none and all analog standards */
   1222 #define V4L2_STD_UNKNOWN        0
   1223 #define V4L2_STD_ALL            (V4L2_STD_525_60	|\
   1224 				 V4L2_STD_625_50)
   1225 
   1226 struct v4l2_standard {
   1227 	__u32		     index;
   1228 	v4l2_std_id          id;
   1229 	__u8		     name[24];
   1230 	struct v4l2_fract    frameperiod; /* Frames, not fields */
   1231 	__u32		     framelines;
   1232 	__u32		     reserved[4];
   1233 };
   1234 
   1235 /*
   1236  *	D V 	B T	T I M I N G S
   1237  */
   1238 
   1239 /** struct v4l2_bt_timings - BT.656/BT.1120 timing data
   1240  * @width:	total width of the active video in pixels
   1241  * @height:	total height of the active video in lines
   1242  * @interlaced:	Interlaced or progressive
   1243  * @polarities:	Positive or negative polarities
   1244  * @pixelclock:	Pixel clock in HZ. Ex. 74.25MHz->74250000
   1245  * @hfrontporch:Horizontal front porch in pixels
   1246  * @hsync:	Horizontal Sync length in pixels
   1247  * @hbackporch:	Horizontal back porch in pixels
   1248  * @vfrontporch:Vertical front porch in lines
   1249  * @vsync:	Vertical Sync length in lines
   1250  * @vbackporch:	Vertical back porch in lines
   1251  * @il_vfrontporch:Vertical front porch for the even field
   1252  *		(aka field 2) of interlaced field formats
   1253  * @il_vsync:	Vertical Sync length for the even field
   1254  *		(aka field 2) of interlaced field formats
   1255  * @il_vbackporch:Vertical back porch for the even field
   1256  *		(aka field 2) of interlaced field formats
   1257  * @standards:	Standards the timing belongs to
   1258  * @flags:	Flags
   1259  * @picture_aspect: The picture aspect ratio (hor/vert).
   1260  * @cea861_vic:	VIC code as per the CEA-861 standard.
   1261  * @hdmi_vic:	VIC code as per the HDMI standard.
   1262  * @reserved:	Reserved fields, must be zeroed.
   1263  *
   1264  * A note regarding vertical interlaced timings: height refers to the total
   1265  * height of the active video frame (= two fields). The blanking timings refer
   1266  * to the blanking of each field. So the height of the total frame is
   1267  * calculated as follows:
   1268  *
   1269  * tot_height = height + vfrontporch + vsync + vbackporch +
   1270  *                       il_vfrontporch + il_vsync + il_vbackporch
   1271  *
   1272  * The active height of each field is height / 2.
   1273  */
   1274 struct v4l2_bt_timings {
   1275 	__u32	width;
   1276 	__u32	height;
   1277 	__u32	interlaced;
   1278 	__u32	polarities;
   1279 	__u64	pixelclock;
   1280 	__u32	hfrontporch;
   1281 	__u32	hsync;
   1282 	__u32	hbackporch;
   1283 	__u32	vfrontporch;
   1284 	__u32	vsync;
   1285 	__u32	vbackporch;
   1286 	__u32	il_vfrontporch;
   1287 	__u32	il_vsync;
   1288 	__u32	il_vbackporch;
   1289 	__u32	standards;
   1290 	__u32	flags;
   1291 	struct v4l2_fract picture_aspect;
   1292 	__u8	cea861_vic;
   1293 	__u8	hdmi_vic;
   1294 	__u8	reserved[46];
   1295 } __attribute__ ((packed));
   1296 
   1297 /* Interlaced or progressive format */
   1298 #define	V4L2_DV_PROGRESSIVE	0
   1299 #define	V4L2_DV_INTERLACED	1
   1300 
   1301 /* Polarities. If bit is not set, it is assumed to be negative polarity */
   1302 #define V4L2_DV_VSYNC_POS_POL	0x00000001
   1303 #define V4L2_DV_HSYNC_POS_POL	0x00000002
   1304 
   1305 /* Timings standards */
   1306 #define V4L2_DV_BT_STD_CEA861	(1 << 0)  /* CEA-861 Digital TV Profile */
   1307 #define V4L2_DV_BT_STD_DMT	(1 << 1)  /* VESA Discrete Monitor Timings */
   1308 #define V4L2_DV_BT_STD_CVT	(1 << 2)  /* VESA Coordinated Video Timings */
   1309 #define V4L2_DV_BT_STD_GTF	(1 << 3)  /* VESA Generalized Timings Formula */
   1310 #define V4L2_DV_BT_STD_SDI	(1 << 4)  /* SDI Timings */
   1311 
   1312 /* Flags */
   1313 
   1314 /*
   1315  * CVT/GTF specific: timing uses reduced blanking (CVT) or the 'Secondary
   1316  * GTF' curve (GTF). In both cases the horizontal and/or vertical blanking
   1317  * intervals are reduced, allowing a higher resolution over the same
   1318  * bandwidth. This is a read-only flag.
   1319  */
   1320 #define V4L2_DV_FL_REDUCED_BLANKING		(1 << 0)
   1321 /*
   1322  * CEA-861 specific: set for CEA-861 formats with a framerate of a multiple
   1323  * of six. These formats can be optionally played at 1 / 1.001 speed.
   1324  * This is a read-only flag.
   1325  */
   1326 #define V4L2_DV_FL_CAN_REDUCE_FPS		(1 << 1)
   1327 /*
   1328  * CEA-861 specific: only valid for video transmitters, the flag is cleared
   1329  * by receivers.
   1330  * If the framerate of the format is a multiple of six, then the pixelclock
   1331  * used to set up the transmitter is divided by 1.001 to make it compatible
   1332  * with 60 Hz based standards such as NTSC and PAL-M that use a framerate of
   1333  * 29.97 Hz. Otherwise this flag is cleared. If the transmitter can't generate
   1334  * such frequencies, then the flag will also be cleared.
   1335  */
   1336 #define V4L2_DV_FL_REDUCED_FPS			(1 << 2)
   1337 /*
   1338  * Specific to interlaced formats: if set, then field 1 is really one half-line
   1339  * longer and field 2 is really one half-line shorter, so each field has
   1340  * exactly the same number of half-lines. Whether half-lines can be detected
   1341  * or used depends on the hardware.
   1342  */
   1343 #define V4L2_DV_FL_HALF_LINE			(1 << 3)
   1344 /*
   1345  * If set, then this is a Consumer Electronics (CE) video format. Such formats
   1346  * differ from other formats (commonly called IT formats) in that if RGB
   1347  * encoding is used then by default the RGB values use limited range (i.e.
   1348  * use the range 16-235) as opposed to 0-255. All formats defined in CEA-861
   1349  * except for the 640x480 format are CE formats.
   1350  */
   1351 #define V4L2_DV_FL_IS_CE_VIDEO			(1 << 4)
   1352 /* Some formats like SMPTE-125M have an interlaced signal with a odd
   1353  * total height. For these formats, if this flag is set, the first
   1354  * field has the extra line. If not, it is the second field.
   1355  */
   1356 #define V4L2_DV_FL_FIRST_FIELD_EXTRA_LINE	(1 << 5)
   1357 /*
   1358  * If set, then the picture_aspect field is valid. Otherwise assume that the
   1359  * pixels are square, so the picture aspect ratio is the same as the width to
   1360  * height ratio.
   1361  */
   1362 #define V4L2_DV_FL_HAS_PICTURE_ASPECT		(1 << 6)
   1363 /*
   1364  * If set, then the cea861_vic field is valid and contains the Video
   1365  * Identification Code as per the CEA-861 standard.
   1366  */
   1367 #define V4L2_DV_FL_HAS_CEA861_VIC		(1 << 7)
   1368 /*
   1369  * If set, then the hdmi_vic field is valid and contains the Video
   1370  * Identification Code as per the HDMI standard (HDMI Vendor Specific
   1371  * InfoFrame).
   1372  */
   1373 #define V4L2_DV_FL_HAS_HDMI_VIC			(1 << 8)
   1374 
   1375 /* A few useful defines to calculate the total blanking and frame sizes */
   1376 #define V4L2_DV_BT_BLANKING_WIDTH(bt) \
   1377 	((bt)->hfrontporch + (bt)->hsync + (bt)->hbackporch)
   1378 #define V4L2_DV_BT_FRAME_WIDTH(bt) \
   1379 	((bt)->width + V4L2_DV_BT_BLANKING_WIDTH(bt))
   1380 #define V4L2_DV_BT_BLANKING_HEIGHT(bt) \
   1381 	((bt)->vfrontporch + (bt)->vsync + (bt)->vbackporch + \
   1382 	 (bt)->il_vfrontporch + (bt)->il_vsync + (bt)->il_vbackporch)
   1383 #define V4L2_DV_BT_FRAME_HEIGHT(bt) \
   1384 	((bt)->height + V4L2_DV_BT_BLANKING_HEIGHT(bt))
   1385 
   1386 /** struct v4l2_dv_timings - DV timings
   1387  * @type:	the type of the timings
   1388  * @bt:	BT656/1120 timings
   1389  */
   1390 struct v4l2_dv_timings {
   1391 	__u32 type;
   1392 	union {
   1393 		struct v4l2_bt_timings	bt;
   1394 		__u32	reserved[32];
   1395 	};
   1396 } __attribute__ ((packed));
   1397 
   1398 /* Values for the type field */
   1399 #define V4L2_DV_BT_656_1120	0	/* BT.656/1120 timing type */
   1400 
   1401 
   1402 /** struct v4l2_enum_dv_timings - DV timings enumeration
   1403  * @index:	enumeration index
   1404  * @pad:	the pad number for which to enumerate timings (used with
   1405  *		v4l-subdev nodes only)
   1406  * @reserved:	must be zeroed
   1407  * @timings:	the timings for the given index
   1408  */
   1409 struct v4l2_enum_dv_timings {
   1410 	__u32 index;
   1411 	__u32 pad;
   1412 	__u32 reserved[2];
   1413 	struct v4l2_dv_timings timings;
   1414 };
   1415 
   1416 /** struct v4l2_bt_timings_cap - BT.656/BT.1120 timing capabilities
   1417  * @min_width:		width in pixels
   1418  * @max_width:		width in pixels
   1419  * @min_height:		height in lines
   1420  * @max_height:		height in lines
   1421  * @min_pixelclock:	Pixel clock in HZ. Ex. 74.25MHz->74250000
   1422  * @max_pixelclock:	Pixel clock in HZ. Ex. 74.25MHz->74250000
   1423  * @standards:		Supported standards
   1424  * @capabilities:	Supported capabilities
   1425  * @reserved:		Must be zeroed
   1426  */
   1427 struct v4l2_bt_timings_cap {
   1428 	__u32	min_width;
   1429 	__u32	max_width;
   1430 	__u32	min_height;
   1431 	__u32	max_height;
   1432 	__u64	min_pixelclock;
   1433 	__u64	max_pixelclock;
   1434 	__u32	standards;
   1435 	__u32	capabilities;
   1436 	__u32	reserved[16];
   1437 } __attribute__ ((packed));
   1438 
   1439 /* Supports interlaced formats */
   1440 #define V4L2_DV_BT_CAP_INTERLACED	(1 << 0)
   1441 /* Supports progressive formats */
   1442 #define V4L2_DV_BT_CAP_PROGRESSIVE	(1 << 1)
   1443 /* Supports CVT/GTF reduced blanking */
   1444 #define V4L2_DV_BT_CAP_REDUCED_BLANKING	(1 << 2)
   1445 /* Supports custom formats */
   1446 #define V4L2_DV_BT_CAP_CUSTOM		(1 << 3)
   1447 
   1448 /** struct v4l2_dv_timings_cap - DV timings capabilities
   1449  * @type:	the type of the timings (same as in struct v4l2_dv_timings)
   1450  * @pad:	the pad number for which to query capabilities (used with
   1451  *		v4l-subdev nodes only)
   1452  * @bt:		the BT656/1120 timings capabilities
   1453  */
   1454 struct v4l2_dv_timings_cap {
   1455 	__u32 type;
   1456 	__u32 pad;
   1457 	__u32 reserved[2];
   1458 	union {
   1459 		struct v4l2_bt_timings_cap bt;
   1460 		__u32 raw_data[32];
   1461 	};
   1462 };
   1463 
   1464 
   1465 /*
   1466  *	V I D E O   I N P U T S
   1467  */
   1468 struct v4l2_input {
   1469 	__u32	     index;		/*  Which input */
   1470 	__u8	     name[32];		/*  Label */
   1471 	__u32	     type;		/*  Type of input */
   1472 	__u32	     audioset;		/*  Associated audios (bitfield) */
   1473 	__u32        tuner;             /*  enum v4l2_tuner_type */
   1474 	v4l2_std_id  std;
   1475 	__u32	     status;
   1476 	__u32	     capabilities;
   1477 	__u32	     reserved[3];
   1478 };
   1479 
   1480 /*  Values for the 'type' field */
   1481 #define V4L2_INPUT_TYPE_TUNER		1
   1482 #define V4L2_INPUT_TYPE_CAMERA		2
   1483 #define V4L2_INPUT_TYPE_TOUCH		3
   1484 
   1485 /* field 'status' - general */
   1486 #define V4L2_IN_ST_NO_POWER    0x00000001  /* Attached device is off */
   1487 #define V4L2_IN_ST_NO_SIGNAL   0x00000002
   1488 #define V4L2_IN_ST_NO_COLOR    0x00000004
   1489 
   1490 /* field 'status' - sensor orientation */
   1491 /* If sensor is mounted upside down set both bits */
   1492 #define V4L2_IN_ST_HFLIP       0x00000010 /* Frames are flipped horizontally */
   1493 #define V4L2_IN_ST_VFLIP       0x00000020 /* Frames are flipped vertically */
   1494 
   1495 /* field 'status' - analog */
   1496 #define V4L2_IN_ST_NO_H_LOCK   0x00000100  /* No horizontal sync lock */
   1497 #define V4L2_IN_ST_COLOR_KILL  0x00000200  /* Color killer is active */
   1498 #define V4L2_IN_ST_NO_V_LOCK   0x00000400  /* No vertical sync lock */
   1499 #define V4L2_IN_ST_NO_STD_LOCK 0x00000800  /* No standard format lock */
   1500 
   1501 /* field 'status' - digital */
   1502 #define V4L2_IN_ST_NO_SYNC     0x00010000  /* No synchronization lock */
   1503 #define V4L2_IN_ST_NO_EQU      0x00020000  /* No equalizer lock */
   1504 #define V4L2_IN_ST_NO_CARRIER  0x00040000  /* Carrier recovery failed */
   1505 
   1506 /* field 'status' - VCR and set-top box */
   1507 #define V4L2_IN_ST_MACROVISION 0x01000000  /* Macrovision detected */
   1508 #define V4L2_IN_ST_NO_ACCESS   0x02000000  /* Conditional access denied */
   1509 #define V4L2_IN_ST_VTR         0x04000000  /* VTR time constant */
   1510 
   1511 /* capabilities flags */
   1512 #define V4L2_IN_CAP_DV_TIMINGS		0x00000002 /* Supports S_DV_TIMINGS */
   1513 #define V4L2_IN_CAP_CUSTOM_TIMINGS	V4L2_IN_CAP_DV_TIMINGS /* For compatibility */
   1514 #define V4L2_IN_CAP_STD			0x00000004 /* Supports S_STD */
   1515 #define V4L2_IN_CAP_NATIVE_SIZE		0x00000008 /* Supports setting native size */
   1516 
   1517 /*
   1518  *	V I D E O   O U T P U T S
   1519  */
   1520 struct v4l2_output {
   1521 	__u32	     index;		/*  Which output */
   1522 	__u8	     name[32];		/*  Label */
   1523 	__u32	     type;		/*  Type of output */
   1524 	__u32	     audioset;		/*  Associated audios (bitfield) */
   1525 	__u32	     modulator;         /*  Associated modulator */
   1526 	v4l2_std_id  std;
   1527 	__u32	     capabilities;
   1528 	__u32	     reserved[3];
   1529 };
   1530 /*  Values for the 'type' field */
   1531 #define V4L2_OUTPUT_TYPE_MODULATOR		1
   1532 #define V4L2_OUTPUT_TYPE_ANALOG			2
   1533 #define V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY	3
   1534 
   1535 /* capabilities flags */
   1536 #define V4L2_OUT_CAP_DV_TIMINGS		0x00000002 /* Supports S_DV_TIMINGS */
   1537 #define V4L2_OUT_CAP_CUSTOM_TIMINGS	V4L2_OUT_CAP_DV_TIMINGS /* For compatibility */
   1538 #define V4L2_OUT_CAP_STD		0x00000004 /* Supports S_STD */
   1539 #define V4L2_OUT_CAP_NATIVE_SIZE	0x00000008 /* Supports setting native size */
   1540 
   1541 /*
   1542  *	C O N T R O L S
   1543  */
   1544 struct v4l2_control {
   1545 	__u32		     id;
   1546 	__s32		     value;
   1547 };
   1548 
   1549 struct v4l2_ext_control {
   1550 	__u32 id;
   1551 	__u32 size;
   1552 	__u32 reserved2[1];
   1553 	union {
   1554 		__s32 value;
   1555 		__s64 value64;
   1556 		char __user *string;
   1557 		__u8 __user *p_u8;
   1558 		__u16 __user *p_u16;
   1559 		__u32 __user *p_u32;
   1560 		void __user *ptr;
   1561 	};
   1562 } __attribute__ ((packed));
   1563 
   1564 struct v4l2_ext_controls {
   1565 	union {
   1566 #ifndef __KERNEL__
   1567 		__u32 ctrl_class;
   1568 #endif
   1569 		__u32 which;
   1570 	};
   1571 	__u32 count;
   1572 	__u32 error_idx;
   1573 	__u32 reserved[2];
   1574 	struct v4l2_ext_control *controls;
   1575 };
   1576 
   1577 #define V4L2_CTRL_ID_MASK      	  (0x0fffffff)
   1578 #ifndef __KERNEL__
   1579 #define V4L2_CTRL_ID2CLASS(id)    ((id) & 0x0fff0000UL)
   1580 #endif
   1581 #define V4L2_CTRL_ID2WHICH(id)    ((id) & 0x0fff0000UL)
   1582 #define V4L2_CTRL_DRIVER_PRIV(id) (((id) & 0xffff) >= 0x1000)
   1583 #define V4L2_CTRL_MAX_DIMS	  (4)
   1584 #define V4L2_CTRL_WHICH_CUR_VAL   0
   1585 #define V4L2_CTRL_WHICH_DEF_VAL   0x0f000000
   1586 
   1587 enum v4l2_ctrl_type {
   1588 	V4L2_CTRL_TYPE_INTEGER	     = 1,
   1589 	V4L2_CTRL_TYPE_BOOLEAN	     = 2,
   1590 	V4L2_CTRL_TYPE_MENU	     = 3,
   1591 	V4L2_CTRL_TYPE_BUTTON	     = 4,
   1592 	V4L2_CTRL_TYPE_INTEGER64     = 5,
   1593 	V4L2_CTRL_TYPE_CTRL_CLASS    = 6,
   1594 	V4L2_CTRL_TYPE_STRING        = 7,
   1595 	V4L2_CTRL_TYPE_BITMASK       = 8,
   1596 	V4L2_CTRL_TYPE_INTEGER_MENU  = 9,
   1597 
   1598 	/* Compound types are >= 0x0100 */
   1599 	V4L2_CTRL_COMPOUND_TYPES     = 0x0100,
   1600 	V4L2_CTRL_TYPE_U8	     = 0x0100,
   1601 	V4L2_CTRL_TYPE_U16	     = 0x0101,
   1602 	V4L2_CTRL_TYPE_U32	     = 0x0102,
   1603 };
   1604 
   1605 /*  Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
   1606 struct v4l2_queryctrl {
   1607 	__u32		     id;
   1608 	__u32		     type;	/* enum v4l2_ctrl_type */
   1609 	__u8		     name[32];	/* Whatever */
   1610 	__s32		     minimum;	/* Note signedness */
   1611 	__s32		     maximum;
   1612 	__s32		     step;
   1613 	__s32		     default_value;
   1614 	__u32                flags;
   1615 	__u32		     reserved[2];
   1616 };
   1617 
   1618 /*  Used in the VIDIOC_QUERY_EXT_CTRL ioctl for querying extended controls */
   1619 struct v4l2_query_ext_ctrl {
   1620 	__u32		     id;
   1621 	__u32		     type;
   1622 	char		     name[32];
   1623 	__s64		     minimum;
   1624 	__s64		     maximum;
   1625 	__u64		     step;
   1626 	__s64		     default_value;
   1627 	__u32                flags;
   1628 	__u32                elem_size;
   1629 	__u32                elems;
   1630 	__u32                nr_of_dims;
   1631 	__u32                dims[V4L2_CTRL_MAX_DIMS];
   1632 	__u32		     reserved[32];
   1633 };
   1634 
   1635 /*  Used in the VIDIOC_QUERYMENU ioctl for querying menu items */
   1636 struct v4l2_querymenu {
   1637 	__u32		id;
   1638 	__u32		index;
   1639 	union {
   1640 		__u8	name[32];	/* Whatever */
   1641 		__s64	value;
   1642 	};
   1643 	__u32		reserved;
   1644 } __attribute__ ((packed));
   1645 
   1646 /*  Control flags  */
   1647 #define V4L2_CTRL_FLAG_DISABLED		0x0001
   1648 #define V4L2_CTRL_FLAG_GRABBED		0x0002
   1649 #define V4L2_CTRL_FLAG_READ_ONLY 	0x0004
   1650 #define V4L2_CTRL_FLAG_UPDATE 		0x0008
   1651 #define V4L2_CTRL_FLAG_INACTIVE 	0x0010
   1652 #define V4L2_CTRL_FLAG_SLIDER 		0x0020
   1653 #define V4L2_CTRL_FLAG_WRITE_ONLY 	0x0040
   1654 #define V4L2_CTRL_FLAG_VOLATILE		0x0080
   1655 #define V4L2_CTRL_FLAG_HAS_PAYLOAD	0x0100
   1656 #define V4L2_CTRL_FLAG_EXECUTE_ON_WRITE	0x0200
   1657 
   1658 /*  Query flags, to be ORed with the control ID */
   1659 #define V4L2_CTRL_FLAG_NEXT_CTRL	0x80000000
   1660 #define V4L2_CTRL_FLAG_NEXT_COMPOUND	0x40000000
   1661 
   1662 /*  User-class control IDs defined by V4L2 */
   1663 #define V4L2_CID_MAX_CTRLS		1024
   1664 /*  IDs reserved for driver specific controls */
   1665 #define V4L2_CID_PRIVATE_BASE		0x08000000
   1666 
   1667 
   1668 /*
   1669  *	T U N I N G
   1670  */
   1671 struct v4l2_tuner {
   1672 	__u32                   index;
   1673 	__u8			name[32];
   1674 	__u32			type;	/* enum v4l2_tuner_type */
   1675 	__u32			capability;
   1676 	__u32			rangelow;
   1677 	__u32			rangehigh;
   1678 	__u32			rxsubchans;
   1679 	__u32			audmode;
   1680 	__s32			signal;
   1681 	__s32			afc;
   1682 	__u32			reserved[4];
   1683 };
   1684 
   1685 struct v4l2_modulator {
   1686 	__u32			index;
   1687 	__u8			name[32];
   1688 	__u32			capability;
   1689 	__u32			rangelow;
   1690 	__u32			rangehigh;
   1691 	__u32			txsubchans;
   1692 	__u32			type;	/* enum v4l2_tuner_type */
   1693 	__u32			reserved[3];
   1694 };
   1695 
   1696 /*  Flags for the 'capability' field */
   1697 #define V4L2_TUNER_CAP_LOW		0x0001
   1698 #define V4L2_TUNER_CAP_NORM		0x0002
   1699 #define V4L2_TUNER_CAP_HWSEEK_BOUNDED	0x0004
   1700 #define V4L2_TUNER_CAP_HWSEEK_WRAP	0x0008
   1701 #define V4L2_TUNER_CAP_STEREO		0x0010
   1702 #define V4L2_TUNER_CAP_LANG2		0x0020
   1703 #define V4L2_TUNER_CAP_SAP		0x0020
   1704 #define V4L2_TUNER_CAP_LANG1		0x0040
   1705 #define V4L2_TUNER_CAP_RDS		0x0080
   1706 #define V4L2_TUNER_CAP_RDS_BLOCK_IO	0x0100
   1707 #define V4L2_TUNER_CAP_RDS_CONTROLS	0x0200
   1708 #define V4L2_TUNER_CAP_FREQ_BANDS	0x0400
   1709 #define V4L2_TUNER_CAP_HWSEEK_PROG_LIM	0x0800
   1710 #define V4L2_TUNER_CAP_1HZ		0x1000
   1711 
   1712 /*  Flags for the 'rxsubchans' field */
   1713 #define V4L2_TUNER_SUB_MONO		0x0001
   1714 #define V4L2_TUNER_SUB_STEREO		0x0002
   1715 #define V4L2_TUNER_SUB_LANG2		0x0004
   1716 #define V4L2_TUNER_SUB_SAP		0x0004
   1717 #define V4L2_TUNER_SUB_LANG1		0x0008
   1718 #define V4L2_TUNER_SUB_RDS		0x0010
   1719 
   1720 /*  Values for the 'audmode' field */
   1721 #define V4L2_TUNER_MODE_MONO		0x0000
   1722 #define V4L2_TUNER_MODE_STEREO		0x0001
   1723 #define V4L2_TUNER_MODE_LANG2		0x0002
   1724 #define V4L2_TUNER_MODE_SAP		0x0002
   1725 #define V4L2_TUNER_MODE_LANG1		0x0003
   1726 #define V4L2_TUNER_MODE_LANG1_LANG2	0x0004
   1727 
   1728 struct v4l2_frequency {
   1729 	__u32	tuner;
   1730 	__u32	type;	/* enum v4l2_tuner_type */
   1731 	__u32	frequency;
   1732 	__u32	reserved[8];
   1733 };
   1734 
   1735 #define V4L2_BAND_MODULATION_VSB	(1 << 1)
   1736 #define V4L2_BAND_MODULATION_FM		(1 << 2)
   1737 #define V4L2_BAND_MODULATION_AM		(1 << 3)
   1738 
   1739 struct v4l2_frequency_band {
   1740 	__u32	tuner;
   1741 	__u32	type;	/* enum v4l2_tuner_type */
   1742 	__u32	index;
   1743 	__u32	capability;
   1744 	__u32	rangelow;
   1745 	__u32	rangehigh;
   1746 	__u32	modulation;
   1747 	__u32	reserved[9];
   1748 };
   1749 
   1750 struct v4l2_hw_freq_seek {
   1751 	__u32	tuner;
   1752 	__u32	type;	/* enum v4l2_tuner_type */
   1753 	__u32	seek_upward;
   1754 	__u32	wrap_around;
   1755 	__u32	spacing;
   1756 	__u32	rangelow;
   1757 	__u32	rangehigh;
   1758 	__u32	reserved[5];
   1759 };
   1760 
   1761 /*
   1762  *	R D S
   1763  */
   1764 
   1765 struct v4l2_rds_data {
   1766 	__u8 	lsb;
   1767 	__u8 	msb;
   1768 	__u8 	block;
   1769 } __attribute__ ((packed));
   1770 
   1771 #define V4L2_RDS_BLOCK_MSK 	 0x7
   1772 #define V4L2_RDS_BLOCK_A 	 0
   1773 #define V4L2_RDS_BLOCK_B 	 1
   1774 #define V4L2_RDS_BLOCK_C 	 2
   1775 #define V4L2_RDS_BLOCK_D 	 3
   1776 #define V4L2_RDS_BLOCK_C_ALT 	 4
   1777 #define V4L2_RDS_BLOCK_INVALID 	 7
   1778 
   1779 #define V4L2_RDS_BLOCK_CORRECTED 0x40
   1780 #define V4L2_RDS_BLOCK_ERROR 	 0x80
   1781 
   1782 /*
   1783  *	A U D I O
   1784  */
   1785 struct v4l2_audio {
   1786 	__u32	index;
   1787 	__u8	name[32];
   1788 	__u32	capability;
   1789 	__u32	mode;
   1790 	__u32	reserved[2];
   1791 };
   1792 
   1793 /*  Flags for the 'capability' field */
   1794 #define V4L2_AUDCAP_STEREO		0x00001
   1795 #define V4L2_AUDCAP_AVL			0x00002
   1796 
   1797 /*  Flags for the 'mode' field */
   1798 #define V4L2_AUDMODE_AVL		0x00001
   1799 
   1800 struct v4l2_audioout {
   1801 	__u32	index;
   1802 	__u8	name[32];
   1803 	__u32	capability;
   1804 	__u32	mode;
   1805 	__u32	reserved[2];
   1806 };
   1807 
   1808 /*
   1809  *	M P E G   S E R V I C E S
   1810  */
   1811 #if 1
   1812 #define V4L2_ENC_IDX_FRAME_I    (0)
   1813 #define V4L2_ENC_IDX_FRAME_P    (1)
   1814 #define V4L2_ENC_IDX_FRAME_B    (2)
   1815 #define V4L2_ENC_IDX_FRAME_MASK (0xf)
   1816 
   1817 struct v4l2_enc_idx_entry {
   1818 	__u64 offset;
   1819 	__u64 pts;
   1820 	__u32 length;
   1821 	__u32 flags;
   1822 	__u32 reserved[2];
   1823 };
   1824 
   1825 #define V4L2_ENC_IDX_ENTRIES (64)
   1826 struct v4l2_enc_idx {
   1827 	__u32 entries;
   1828 	__u32 entries_cap;
   1829 	__u32 reserved[4];
   1830 	struct v4l2_enc_idx_entry entry[V4L2_ENC_IDX_ENTRIES];
   1831 };
   1832 
   1833 
   1834 #define V4L2_ENC_CMD_START      (0)
   1835 #define V4L2_ENC_CMD_STOP       (1)
   1836 #define V4L2_ENC_CMD_PAUSE      (2)
   1837 #define V4L2_ENC_CMD_RESUME     (3)
   1838 
   1839 /* Flags for V4L2_ENC_CMD_STOP */
   1840 #define V4L2_ENC_CMD_STOP_AT_GOP_END    (1 << 0)
   1841 
   1842 struct v4l2_encoder_cmd {
   1843 	__u32 cmd;
   1844 	__u32 flags;
   1845 	union {
   1846 		struct {
   1847 			__u32 data[8];
   1848 		} raw;
   1849 	};
   1850 };
   1851 
   1852 /* Decoder commands */
   1853 #define V4L2_DEC_CMD_START       (0)
   1854 #define V4L2_DEC_CMD_STOP        (1)
   1855 #define V4L2_DEC_CMD_PAUSE       (2)
   1856 #define V4L2_DEC_CMD_RESUME      (3)
   1857 
   1858 /* Flags for V4L2_DEC_CMD_START */
   1859 #define V4L2_DEC_CMD_START_MUTE_AUDIO	(1 << 0)
   1860 
   1861 /* Flags for V4L2_DEC_CMD_PAUSE */
   1862 #define V4L2_DEC_CMD_PAUSE_TO_BLACK	(1 << 0)
   1863 
   1864 /* Flags for V4L2_DEC_CMD_STOP */
   1865 #define V4L2_DEC_CMD_STOP_TO_BLACK	(1 << 0)
   1866 #define V4L2_DEC_CMD_STOP_IMMEDIATELY	(1 << 1)
   1867 
   1868 /* Play format requirements (returned by the driver): */
   1869 
   1870 /* The decoder has no special format requirements */
   1871 #define V4L2_DEC_START_FMT_NONE		(0)
   1872 /* The decoder requires full GOPs */
   1873 #define V4L2_DEC_START_FMT_GOP		(1)
   1874 
   1875 /* The structure must be zeroed before use by the application
   1876    This ensures it can be extended safely in the future. */
   1877 struct v4l2_decoder_cmd {
   1878 	__u32 cmd;
   1879 	__u32 flags;
   1880 	union {
   1881 		struct {
   1882 			__u64 pts;
   1883 		} stop;
   1884 
   1885 		struct {
   1886 			/* 0 or 1000 specifies normal speed,
   1887 			   1 specifies forward single stepping,
   1888 			   -1 specifies backward single stepping,
   1889 			   >1: playback at speed/1000 of the normal speed,
   1890 			   <-1: reverse playback at (-speed/1000) of the normal speed. */
   1891 			__s32 speed;
   1892 			__u32 format;
   1893 		} start;
   1894 
   1895 		struct {
   1896 			__u32 data[16];
   1897 		} raw;
   1898 	};
   1899 };
   1900 #endif
   1901 
   1902 
   1903 /*
   1904  *	D A T A   S E R V I C E S   ( V B I )
   1905  *
   1906  *	Data services API by Michael Schimek
   1907  */
   1908 
   1909 /* Raw VBI */
   1910 struct v4l2_vbi_format {
   1911 	__u32	sampling_rate;		/* in 1 Hz */
   1912 	__u32	offset;
   1913 	__u32	samples_per_line;
   1914 	__u32	sample_format;		/* V4L2_PIX_FMT_* */
   1915 	__s32	start[2];
   1916 	__u32	count[2];
   1917 	__u32	flags;			/* V4L2_VBI_* */
   1918 	__u32	reserved[2];		/* must be zero */
   1919 };
   1920 
   1921 /*  VBI flags  */
   1922 #define V4L2_VBI_UNSYNC		(1 << 0)
   1923 #define V4L2_VBI_INTERLACED	(1 << 1)
   1924 
   1925 /* ITU-R start lines for each field */
   1926 #define V4L2_VBI_ITU_525_F1_START (1)
   1927 #define V4L2_VBI_ITU_525_F2_START (264)
   1928 #define V4L2_VBI_ITU_625_F1_START (1)
   1929 #define V4L2_VBI_ITU_625_F2_START (314)
   1930 
   1931 /* Sliced VBI
   1932  *
   1933  *    This implements is a proposal V4L2 API to allow SLICED VBI
   1934  * required for some hardware encoders. It should change without
   1935  * notice in the definitive implementation.
   1936  */
   1937 
   1938 struct v4l2_sliced_vbi_format {
   1939 	__u16   service_set;
   1940 	/* service_lines[0][...] specifies lines 0-23 (1-23 used) of the first field
   1941 	   service_lines[1][...] specifies lines 0-23 (1-23 used) of the second field
   1942 				 (equals frame lines 313-336 for 625 line video
   1943 				  standards, 263-286 for 525 line standards) */
   1944 	__u16   service_lines[2][24];
   1945 	__u32   io_size;
   1946 	__u32   reserved[2];            /* must be zero */
   1947 };
   1948 
   1949 /* Teletext World System Teletext
   1950    (WST), defined on ITU-R BT.653-2 */
   1951 #define V4L2_SLICED_TELETEXT_B          (0x0001)
   1952 /* Video Program System, defined on ETS 300 231*/
   1953 #define V4L2_SLICED_VPS                 (0x0400)
   1954 /* Closed Caption, defined on EIA-608 */
   1955 #define V4L2_SLICED_CAPTION_525         (0x1000)
   1956 /* Wide Screen System, defined on ITU-R BT1119.1 */
   1957 #define V4L2_SLICED_WSS_625             (0x4000)
   1958 
   1959 #define V4L2_SLICED_VBI_525             (V4L2_SLICED_CAPTION_525)
   1960 #define V4L2_SLICED_VBI_625             (V4L2_SLICED_TELETEXT_B | V4L2_SLICED_VPS | V4L2_SLICED_WSS_625)
   1961 
   1962 struct v4l2_sliced_vbi_cap {
   1963 	__u16   service_set;
   1964 	/* service_lines[0][...] specifies lines 0-23 (1-23 used) of the first field
   1965 	   service_lines[1][...] specifies lines 0-23 (1-23 used) of the second field
   1966 				 (equals frame lines 313-336 for 625 line video
   1967 				  standards, 263-286 for 525 line standards) */
   1968 	__u16   service_lines[2][24];
   1969 	__u32	type;		/* enum v4l2_buf_type */
   1970 	__u32   reserved[3];    /* must be 0 */
   1971 };
   1972 
   1973 struct v4l2_sliced_vbi_data {
   1974 	__u32   id;
   1975 	__u32   field;          /* 0: first field, 1: second field */
   1976 	__u32   line;           /* 1-23 */
   1977 	__u32   reserved;       /* must be 0 */
   1978 	__u8    data[48];
   1979 };
   1980 
   1981 /*
   1982  * Sliced VBI data inserted into MPEG Streams
   1983  */
   1984 
   1985 /*
   1986  * V4L2_MPEG_STREAM_VBI_FMT_IVTV:
   1987  *
   1988  * Structure of payload contained in an MPEG 2 Private Stream 1 PES Packet in an
   1989  * MPEG-2 Program Pack that contains V4L2_MPEG_STREAM_VBI_FMT_IVTV Sliced VBI
   1990  * data
   1991  *
   1992  * Note, the MPEG-2 Program Pack and Private Stream 1 PES packet header
   1993  * definitions are not included here.  See the MPEG-2 specifications for details
   1994  * on these headers.
   1995  */
   1996 
   1997 /* Line type IDs */
   1998 #define V4L2_MPEG_VBI_IVTV_TELETEXT_B     (1)
   1999 #define V4L2_MPEG_VBI_IVTV_CAPTION_525    (4)
   2000 #define V4L2_MPEG_VBI_IVTV_WSS_625        (5)
   2001 #define V4L2_MPEG_VBI_IVTV_VPS            (7)
   2002 
   2003 struct v4l2_mpeg_vbi_itv0_line {
   2004 	__u8 id;	/* One of V4L2_MPEG_VBI_IVTV_* above */
   2005 	__u8 data[42];	/* Sliced VBI data for the line */
   2006 } __attribute__ ((packed));
   2007 
   2008 struct v4l2_mpeg_vbi_itv0 {
   2009 	__le32 linemask[2]; /* Bitmasks of VBI service lines present */
   2010 	struct v4l2_mpeg_vbi_itv0_line line[35];
   2011 } __attribute__ ((packed));
   2012 
   2013 struct v4l2_mpeg_vbi_ITV0 {
   2014 	struct v4l2_mpeg_vbi_itv0_line line[36];
   2015 } __attribute__ ((packed));
   2016 
   2017 #define V4L2_MPEG_VBI_IVTV_MAGIC0	"itv0"
   2018 #define V4L2_MPEG_VBI_IVTV_MAGIC1	"ITV0"
   2019 
   2020 struct v4l2_mpeg_vbi_fmt_ivtv {
   2021 	__u8 magic[4];
   2022 	union {
   2023 		struct v4l2_mpeg_vbi_itv0 itv0;
   2024 		struct v4l2_mpeg_vbi_ITV0 ITV0;
   2025 	};
   2026 } __attribute__ ((packed));
   2027 
   2028 /*
   2029  *	A G G R E G A T E   S T R U C T U R E S
   2030  */
   2031 
   2032 /**
   2033  * struct v4l2_plane_pix_format - additional, per-plane format definition
   2034  * @sizeimage:		maximum size in bytes required for data, for which
   2035  *			this plane will be used
   2036  * @bytesperline:	distance in bytes between the leftmost pixels in two
   2037  *			adjacent lines
   2038  */
   2039 struct v4l2_plane_pix_format {
   2040 	__u32		sizeimage;
   2041 	__u32		bytesperline;
   2042 	__u16		reserved[6];
   2043 } __attribute__ ((packed));
   2044 
   2045 /**
   2046  * struct v4l2_pix_format_mplane - multiplanar format definition
   2047  * @width:		image width in pixels
   2048  * @height:		image height in pixels
   2049  * @pixelformat:	little endian four character code (fourcc)
   2050  * @field:		enum v4l2_field; field order (for interlaced video)
   2051  * @colorspace:		enum v4l2_colorspace; supplemental to pixelformat
   2052  * @plane_fmt:		per-plane information
   2053  * @num_planes:		number of planes for this format
   2054  * @flags:		format flags (V4L2_PIX_FMT_FLAG_*)
   2055  * @ycbcr_enc:		enum v4l2_ycbcr_encoding, Y'CbCr encoding
   2056  * @quantization:	enum v4l2_quantization, colorspace quantization
   2057  * @xfer_func:		enum v4l2_xfer_func, colorspace transfer function
   2058  */
   2059 struct v4l2_pix_format_mplane {
   2060 	__u32				width;
   2061 	__u32				height;
   2062 	__u32				pixelformat;
   2063 	__u32				field;
   2064 	__u32				colorspace;
   2065 
   2066 	struct v4l2_plane_pix_format	plane_fmt[VIDEO_MAX_PLANES];
   2067 	__u8				num_planes;
   2068 	__u8				flags;
   2069 	 union {
   2070 		__u8				ycbcr_enc;
   2071 		__u8				hsv_enc;
   2072 	};
   2073 	__u8				quantization;
   2074 	__u8				xfer_func;
   2075 	__u8				reserved[7];
   2076 } __attribute__ ((packed));
   2077 
   2078 /**
   2079  * struct v4l2_sdr_format - SDR format definition
   2080  * @pixelformat:	little endian four character code (fourcc)
   2081  * @buffersize:		maximum size in bytes required for data
   2082  */
   2083 struct v4l2_sdr_format {
   2084 	__u32				pixelformat;
   2085 	__u32				buffersize;
   2086 	__u8				reserved[24];
   2087 } __attribute__ ((packed));
   2088 
   2089 /**
   2090  * struct v4l2_format - stream data format
   2091  * @type:	enum v4l2_buf_type; type of the data stream
   2092  * @pix:	definition of an image format
   2093  * @pix_mp:	definition of a multiplanar image format
   2094  * @win:	definition of an overlaid image
   2095  * @vbi:	raw VBI capture or output parameters
   2096  * @sliced:	sliced VBI capture or output parameters
   2097  * @raw_data:	placeholder for future extensions and custom formats
   2098  */
   2099 struct v4l2_format {
   2100 	__u32	 type;
   2101 	union {
   2102 		struct v4l2_pix_format		pix;     /* V4L2_BUF_TYPE_VIDEO_CAPTURE */
   2103 		struct v4l2_pix_format_mplane	pix_mp;  /* V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE */
   2104 		struct v4l2_window		win;     /* V4L2_BUF_TYPE_VIDEO_OVERLAY */
   2105 		struct v4l2_vbi_format		vbi;     /* V4L2_BUF_TYPE_VBI_CAPTURE */
   2106 		struct v4l2_sliced_vbi_format	sliced;  /* V4L2_BUF_TYPE_SLICED_VBI_CAPTURE */
   2107 		struct v4l2_sdr_format		sdr;     /* V4L2_BUF_TYPE_SDR_CAPTURE */
   2108 		__u8	raw_data[200];                   /* user-defined */
   2109 	} fmt;
   2110 };
   2111 
   2112 /*	Stream type-dependent parameters
   2113  */
   2114 struct v4l2_streamparm {
   2115 	__u32	 type;			/* enum v4l2_buf_type */
   2116 	union {
   2117 		struct v4l2_captureparm	capture;
   2118 		struct v4l2_outputparm	output;
   2119 		__u8	raw_data[200];  /* user-defined */
   2120 	} parm;
   2121 };
   2122 
   2123 /*
   2124  *	E V E N T S
   2125  */
   2126 
   2127 #define V4L2_EVENT_ALL				0
   2128 #define V4L2_EVENT_VSYNC			1
   2129 #define V4L2_EVENT_EOS				2
   2130 #define V4L2_EVENT_CTRL				3
   2131 #define V4L2_EVENT_FRAME_SYNC			4
   2132 #define V4L2_EVENT_SOURCE_CHANGE		5
   2133 #define V4L2_EVENT_MOTION_DET			6
   2134 #define V4L2_EVENT_PRIVATE_START		0x08000000
   2135 
   2136 /* Payload for V4L2_EVENT_VSYNC */
   2137 struct v4l2_event_vsync {
   2138 	/* Can be V4L2_FIELD_ANY, _NONE, _TOP or _BOTTOM */
   2139 	__u8 field;
   2140 } __attribute__ ((packed));
   2141 
   2142 /* Payload for V4L2_EVENT_CTRL */
   2143 #define V4L2_EVENT_CTRL_CH_VALUE		(1 << 0)
   2144 #define V4L2_EVENT_CTRL_CH_FLAGS		(1 << 1)
   2145 #define V4L2_EVENT_CTRL_CH_RANGE		(1 << 2)
   2146 
   2147 struct v4l2_event_ctrl {
   2148 	__u32 changes;
   2149 	__u32 type;
   2150 	union {
   2151 		__s32 value;
   2152 		__s64 value64;
   2153 	};
   2154 	__u32 flags;
   2155 	__s32 minimum;
   2156 	__s32 maximum;
   2157 	__s32 step;
   2158 	__s32 default_value;
   2159 };
   2160 
   2161 struct v4l2_event_frame_sync {
   2162 	__u32 frame_sequence;
   2163 };
   2164 
   2165 #define V4L2_EVENT_SRC_CH_RESOLUTION		(1 << 0)
   2166 
   2167 struct v4l2_event_src_change {
   2168 	__u32 changes;
   2169 };
   2170 
   2171 #define V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ	(1 << 0)
   2172 
   2173 /**
   2174  * struct v4l2_event_motion_det - motion detection event
   2175  * @flags:             if V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ is set, then the
   2176  *                     frame_sequence field is valid.
   2177  * @frame_sequence:    the frame sequence number associated with this event.
   2178  * @region_mask:       which regions detected motion.
   2179  */
   2180 struct v4l2_event_motion_det {
   2181 	__u32 flags;
   2182 	__u32 frame_sequence;
   2183 	__u32 region_mask;
   2184 };
   2185 
   2186 struct v4l2_event {
   2187 	__u32				type;
   2188 	union {
   2189 		struct v4l2_event_vsync		vsync;
   2190 		struct v4l2_event_ctrl		ctrl;
   2191 		struct v4l2_event_frame_sync	frame_sync;
   2192 		struct v4l2_event_src_change	src_change;
   2193 		struct v4l2_event_motion_det	motion_det;
   2194 		__u8				data[64];
   2195 	} u;
   2196 	__u32				pending;
   2197 	__u32				sequence;
   2198 	struct timespec			timestamp;
   2199 	__u32				id;
   2200 	__u32				reserved[8];
   2201 };
   2202 
   2203 #define V4L2_EVENT_SUB_FL_SEND_INITIAL		(1 << 0)
   2204 #define V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK	(1 << 1)
   2205 
   2206 struct v4l2_event_subscription {
   2207 	__u32				type;
   2208 	__u32				id;
   2209 	__u32				flags;
   2210 	__u32				reserved[5];
   2211 };
   2212 
   2213 /*
   2214  *	A D V A N C E D   D E B U G G I N G
   2215  *
   2216  *	NOTE: EXPERIMENTAL API, NEVER RELY ON THIS IN APPLICATIONS!
   2217  *	FOR DEBUGGING, TESTING AND INTERNAL USE ONLY!
   2218  */
   2219 
   2220 /* VIDIOC_DBG_G_REGISTER and VIDIOC_DBG_S_REGISTER */
   2221 
   2222 #define V4L2_CHIP_MATCH_BRIDGE      0  /* Match against chip ID on the bridge (0 for the bridge) */
   2223 #define V4L2_CHIP_MATCH_SUBDEV      4  /* Match against subdev index */
   2224 
   2225 /* The following four defines are no longer in use */
   2226 #define V4L2_CHIP_MATCH_HOST V4L2_CHIP_MATCH_BRIDGE
   2227 #define V4L2_CHIP_MATCH_I2C_DRIVER  1  /* Match against I2C driver name */
   2228 #define V4L2_CHIP_MATCH_I2C_ADDR    2  /* Match against I2C 7-bit address */
   2229 #define V4L2_CHIP_MATCH_AC97        3  /* Match against ancillary AC97 chip */
   2230 
   2231 struct v4l2_dbg_match {
   2232 	__u32 type; /* Match type */
   2233 	union {     /* Match this chip, meaning determined by type */
   2234 		__u32 addr;
   2235 		char name[32];
   2236 	};
   2237 } __attribute__ ((packed));
   2238 
   2239 struct v4l2_dbg_register {
   2240 	struct v4l2_dbg_match match;
   2241 	__u32 size;	/* register size in bytes */
   2242 	__u64 reg;
   2243 	__u64 val;
   2244 } __attribute__ ((packed));
   2245 
   2246 #define V4L2_CHIP_FL_READABLE (1 << 0)
   2247 #define V4L2_CHIP_FL_WRITABLE (1 << 1)
   2248 
   2249 /* VIDIOC_DBG_G_CHIP_INFO */
   2250 struct v4l2_dbg_chip_info {
   2251 	struct v4l2_dbg_match match;
   2252 	char name[32];
   2253 	__u32 flags;
   2254 	__u32 reserved[32];
   2255 } __attribute__ ((packed));
   2256 
   2257 /**
   2258  * struct v4l2_create_buffers - VIDIOC_CREATE_BUFS argument
   2259  * @index:	on return, index of the first created buffer
   2260  * @count:	entry: number of requested buffers,
   2261  *		return: number of created buffers
   2262  * @memory:	enum v4l2_memory; buffer memory type
   2263  * @format:	frame format, for which buffers are requested
   2264  * @reserved:	future extensions
   2265  */
   2266 struct v4l2_create_buffers {
   2267 	__u32			index;
   2268 	__u32			count;
   2269 	__u32			memory;
   2270 	struct v4l2_format	format;
   2271 	__u32			reserved[8];
   2272 };
   2273 
   2274 /*
   2275  *	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
   2276  *
   2277  */
   2278 #define VIDIOC_QUERYCAP		 _IOR('V',  0, struct v4l2_capability)
   2279 #define VIDIOC_RESERVED		  _IO('V',  1)
   2280 #define VIDIOC_ENUM_FMT         _IOWR('V',  2, struct v4l2_fmtdesc)
   2281 #define VIDIOC_G_FMT		_IOWR('V',  4, struct v4l2_format)
   2282 #define VIDIOC_S_FMT		_IOWR('V',  5, struct v4l2_format)
   2283 #define VIDIOC_REQBUFS		_IOWR('V',  8, struct v4l2_requestbuffers)
   2284 #define VIDIOC_QUERYBUF		_IOWR('V',  9, struct v4l2_buffer)
   2285 #define VIDIOC_G_FBUF		 _IOR('V', 10, struct v4l2_framebuffer)
   2286 #define VIDIOC_S_FBUF		 _IOW('V', 11, struct v4l2_framebuffer)
   2287 #define VIDIOC_OVERLAY		 _IOW('V', 14, int)
   2288 #define VIDIOC_QBUF		_IOWR('V', 15, struct v4l2_buffer)
   2289 #define VIDIOC_EXPBUF		_IOWR('V', 16, struct v4l2_exportbuffer)
   2290 #define VIDIOC_DQBUF		_IOWR('V', 17, struct v4l2_buffer)
   2291 #define VIDIOC_STREAMON		 _IOW('V', 18, int)
   2292 #define VIDIOC_STREAMOFF	 _IOW('V', 19, int)
   2293 #define VIDIOC_G_PARM		_IOWR('V', 21, struct v4l2_streamparm)
   2294 #define VIDIOC_S_PARM		_IOWR('V', 22, struct v4l2_streamparm)
   2295 #define VIDIOC_G_STD		 _IOR('V', 23, v4l2_std_id)
   2296 #define VIDIOC_S_STD		 _IOW('V', 24, v4l2_std_id)
   2297 #define VIDIOC_ENUMSTD		_IOWR('V', 25, struct v4l2_standard)
   2298 #define VIDIOC_ENUMINPUT	_IOWR('V', 26, struct v4l2_input)
   2299 #define VIDIOC_G_CTRL		_IOWR('V', 27, struct v4l2_control)
   2300 #define VIDIOC_S_CTRL		_IOWR('V', 28, struct v4l2_control)
   2301 #define VIDIOC_G_TUNER		_IOWR('V', 29, struct v4l2_tuner)
   2302 #define VIDIOC_S_TUNER		 _IOW('V', 30, struct v4l2_tuner)
   2303 #define VIDIOC_G_AUDIO		 _IOR('V', 33, struct v4l2_audio)
   2304 #define VIDIOC_S_AUDIO		 _IOW('V', 34, struct v4l2_audio)
   2305 #define VIDIOC_QUERYCTRL	_IOWR('V', 36, struct v4l2_queryctrl)
   2306 #define VIDIOC_QUERYMENU	_IOWR('V', 37, struct v4l2_querymenu)
   2307 #define VIDIOC_G_INPUT		 _IOR('V', 38, int)
   2308 #define VIDIOC_S_INPUT		_IOWR('V', 39, int)
   2309 #define VIDIOC_G_EDID		_IOWR('V', 40, struct v4l2_edid)
   2310 #define VIDIOC_S_EDID		_IOWR('V', 41, struct v4l2_edid)
   2311 #define VIDIOC_G_OUTPUT		 _IOR('V', 46, int)
   2312 #define VIDIOC_S_OUTPUT		_IOWR('V', 47, int)
   2313 #define VIDIOC_ENUMOUTPUT	_IOWR('V', 48, struct v4l2_output)
   2314 #define VIDIOC_G_AUDOUT		 _IOR('V', 49, struct v4l2_audioout)
   2315 #define VIDIOC_S_AUDOUT		 _IOW('V', 50, struct v4l2_audioout)
   2316 #define VIDIOC_G_MODULATOR	_IOWR('V', 54, struct v4l2_modulator)
   2317 #define VIDIOC_S_MODULATOR	 _IOW('V', 55, struct v4l2_modulator)
   2318 #define VIDIOC_G_FREQUENCY	_IOWR('V', 56, struct v4l2_frequency)
   2319 #define VIDIOC_S_FREQUENCY	 _IOW('V', 57, struct v4l2_frequency)
   2320 #define VIDIOC_CROPCAP		_IOWR('V', 58, struct v4l2_cropcap)
   2321 #define VIDIOC_G_CROP		_IOWR('V', 59, struct v4l2_crop)
   2322 #define VIDIOC_S_CROP		 _IOW('V', 60, struct v4l2_crop)
   2323 #define VIDIOC_G_JPEGCOMP	 _IOR('V', 61, struct v4l2_jpegcompression)
   2324 #define VIDIOC_S_JPEGCOMP	 _IOW('V', 62, struct v4l2_jpegcompression)
   2325 #define VIDIOC_QUERYSTD      	 _IOR('V', 63, v4l2_std_id)
   2326 #define VIDIOC_TRY_FMT      	_IOWR('V', 64, struct v4l2_format)
   2327 #define VIDIOC_ENUMAUDIO	_IOWR('V', 65, struct v4l2_audio)
   2328 #define VIDIOC_ENUMAUDOUT	_IOWR('V', 66, struct v4l2_audioout)
   2329 #define VIDIOC_G_PRIORITY	 _IOR('V', 67, __u32) /* enum v4l2_priority */
   2330 #define VIDIOC_S_PRIORITY	 _IOW('V', 68, __u32) /* enum v4l2_priority */
   2331 #define VIDIOC_G_SLICED_VBI_CAP _IOWR('V', 69, struct v4l2_sliced_vbi_cap)
   2332 #define VIDIOC_LOG_STATUS         _IO('V', 70)
   2333 #define VIDIOC_G_EXT_CTRLS	_IOWR('V', 71, struct v4l2_ext_controls)
   2334 #define VIDIOC_S_EXT_CTRLS	_IOWR('V', 72, struct v4l2_ext_controls)
   2335 #define VIDIOC_TRY_EXT_CTRLS	_IOWR('V', 73, struct v4l2_ext_controls)
   2336 #define VIDIOC_ENUM_FRAMESIZES	_IOWR('V', 74, struct v4l2_frmsizeenum)
   2337 #define VIDIOC_ENUM_FRAMEINTERVALS _IOWR('V', 75, struct v4l2_frmivalenum)
   2338 #define VIDIOC_G_ENC_INDEX       _IOR('V', 76, struct v4l2_enc_idx)
   2339 #define VIDIOC_ENCODER_CMD      _IOWR('V', 77, struct v4l2_encoder_cmd)
   2340 #define VIDIOC_TRY_ENCODER_CMD  _IOWR('V', 78, struct v4l2_encoder_cmd)
   2341 
   2342 /*
   2343  * Experimental, meant for debugging, testing and internal use.
   2344  * Only implemented if CONFIG_VIDEO_ADV_DEBUG is defined.
   2345  * You must be root to use these ioctls. Never use these in applications!
   2346  */
   2347 #define	VIDIOC_DBG_S_REGISTER 	 _IOW('V', 79, struct v4l2_dbg_register)
   2348 #define	VIDIOC_DBG_G_REGISTER 	_IOWR('V', 80, struct v4l2_dbg_register)
   2349 
   2350 #define VIDIOC_S_HW_FREQ_SEEK	 _IOW('V', 82, struct v4l2_hw_freq_seek)
   2351 #define	VIDIOC_S_DV_TIMINGS	_IOWR('V', 87, struct v4l2_dv_timings)
   2352 #define	VIDIOC_G_DV_TIMINGS	_IOWR('V', 88, struct v4l2_dv_timings)
   2353 #define	VIDIOC_DQEVENT		 _IOR('V', 89, struct v4l2_event)
   2354 #define	VIDIOC_SUBSCRIBE_EVENT	 _IOW('V', 90, struct v4l2_event_subscription)
   2355 #define	VIDIOC_UNSUBSCRIBE_EVENT _IOW('V', 91, struct v4l2_event_subscription)
   2356 #define VIDIOC_CREATE_BUFS	_IOWR('V', 92, struct v4l2_create_buffers)
   2357 #define VIDIOC_PREPARE_BUF	_IOWR('V', 93, struct v4l2_buffer)
   2358 #define VIDIOC_G_SELECTION	_IOWR('V', 94, struct v4l2_selection)
   2359 #define VIDIOC_S_SELECTION	_IOWR('V', 95, struct v4l2_selection)
   2360 #define VIDIOC_DECODER_CMD	_IOWR('V', 96, struct v4l2_decoder_cmd)
   2361 #define VIDIOC_TRY_DECODER_CMD	_IOWR('V', 97, struct v4l2_decoder_cmd)
   2362 #define VIDIOC_ENUM_DV_TIMINGS  _IOWR('V', 98, struct v4l2_enum_dv_timings)
   2363 #define VIDIOC_QUERY_DV_TIMINGS  _IOR('V', 99, struct v4l2_dv_timings)
   2364 #define VIDIOC_DV_TIMINGS_CAP   _IOWR('V', 100, struct v4l2_dv_timings_cap)
   2365 #define VIDIOC_ENUM_FREQ_BANDS	_IOWR('V', 101, struct v4l2_frequency_band)
   2366 
   2367 /*
   2368  * Experimental, meant for debugging, testing and internal use.
   2369  * Never use this in applications!
   2370  */
   2371 #define VIDIOC_DBG_G_CHIP_INFO  _IOWR('V', 102, struct v4l2_dbg_chip_info)
   2372 
   2373 #define VIDIOC_QUERY_EXT_CTRL	_IOWR('V', 103, struct v4l2_query_ext_ctrl)
   2374 
   2375 /* Reminder: when adding new ioctls please add support for them to
   2376    drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
   2377 
   2378 #define BASE_VIDIOC_PRIVATE	192		/* 192-255 are private */
   2379 
   2380 #endif /* _UAPI__LINUX_VIDEODEV2_H */
   2381