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incubator-nuttx/include/sys/videoio.h

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/****************************************************************************
* include/sys/videoio.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __INCLUDE_SYS_VIDEOIO_H
#define __INCLUDE_SYS_VIDEOIO_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <stdint.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/video_controls.h>
#include <nuttx/fs/ioctl.h>
#ifdef __cplusplus
extern "C"
{
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define VIDEO_MAX_FRAME 32
#define VIDEO_MAX_PLANES 8
/* Four-character-code (FOURCC) */
#define v4l2_fourcc(a, b, c, d)\
((uint32_t)(a) | ((uint32_t)(b) << 8) | \
((uint32_t)(c) << 16) | ((uint32_t)(d) << 24))
#define v4l2_fourcc_be(a, b, c, d) (v4l2_fourcc(a, b, c, d) | (1 << 31))
/* RGB formats */
#define V4L2_PIX_FMT_RGB332 v4l2_fourcc('R', 'G', 'B', '1')
#define V4L2_PIX_FMT_RGB444 v4l2_fourcc('R', '4', '4', '4')
#define V4L2_PIX_FMT_ARGB444 v4l2_fourcc('A', 'R', '1', '2')
#define V4L2_PIX_FMT_XRGB444 v4l2_fourcc('X', 'R', '1', '2')
#define V4L2_PIX_FMT_RGB555 v4l2_fourcc('R', 'G', 'B', 'O')
#define V4L2_PIX_FMT_ARGB555 v4l2_fourcc('A', 'R', '1', '5')
#define V4L2_PIX_FMT_XRGB555 v4l2_fourcc('X', 'R', '1', '5')
#define V4L2_PIX_FMT_RGB565 v4l2_fourcc('R', 'G', 'B', 'P')
#define V4L2_PIX_FMT_RGB555X v4l2_fourcc('R', 'G', 'B', 'Q')
#define V4L2_PIX_FMT_ARGB555X v4l2_fourcc_be('A', 'R', '1', '5')
#define V4L2_PIX_FMT_XRGB555X v4l2_fourcc_be('X', 'R', '1', '5')
#define V4L2_PIX_FMT_RGB565X v4l2_fourcc('R', 'G', 'B', 'R')
#define V4L2_PIX_FMT_BGR666 v4l2_fourcc('B', 'G', 'R', 'H')
#define V4L2_PIX_FMT_BGR24 v4l2_fourcc('B', 'G', 'R', '3')
#define V4L2_PIX_FMT_RGB24 v4l2_fourcc('R', 'G', 'B', '3')
#define V4L2_PIX_FMT_BGR32 v4l2_fourcc('B', 'G', 'R', '4')
#define V4L2_PIX_FMT_ABGR32 v4l2_fourcc('A', 'R', '2', '4')
#define V4L2_PIX_FMT_XBGR32 v4l2_fourcc('X', 'R', '2', '4')
#define V4L2_PIX_FMT_RGB32 v4l2_fourcc('R', 'G', 'B', '4')
#define V4L2_PIX_FMT_ARGB32 v4l2_fourcc('B', 'A', '2', '4')
#define V4L2_PIX_FMT_XRGB32 v4l2_fourcc('B', 'X', '2', '4')
/* Grey formats */
#define V4L2_PIX_FMT_GREY v4l2_fourcc('G', 'R', 'E', 'Y')
#define V4L2_PIX_FMT_Y4 v4l2_fourcc('Y', '0', '4', ' ')
#define V4L2_PIX_FMT_Y6 v4l2_fourcc('Y', '0', '6', ' ')
#define V4L2_PIX_FMT_Y10 v4l2_fourcc('Y', '1', '0', ' ')
#define V4L2_PIX_FMT_Y12 v4l2_fourcc('Y', '1', '2', ' ')
#define V4L2_PIX_FMT_Y16 v4l2_fourcc('Y', '1', '6', ' ')
#define V4L2_PIX_FMT_Y16_BE v4l2_fourcc_be('Y', '1', '6', ' ')
/* Grey bit-packed formats */
#define V4L2_PIX_FMT_Y10BPACK v4l2_fourcc('Y', '1', '0', 'B')
/* Palette formats */
#define V4L2_PIX_FMT_PAL8 v4l2_fourcc('P', 'A', 'L', '8')
/* Chrominance formats */
#define V4L2_PIX_FMT_UV8 v4l2_fourcc('U', 'V', '8', ' ')
/* Luminance+Chrominance formats */
#define V4L2_PIX_FMT_YUYV v4l2_fourcc('Y', 'U', 'Y', 'V')
#define V4L2_PIX_FMT_YYUV v4l2_fourcc('Y', 'Y', 'U', 'V')
#define V4L2_PIX_FMT_YVYU v4l2_fourcc('Y', 'V', 'Y', 'U')
#define V4L2_PIX_FMT_UYVY v4l2_fourcc('U', 'Y', 'V', 'Y')
#define V4L2_PIX_FMT_VYUY v4l2_fourcc('V', 'Y', 'U', 'Y')
#define V4L2_PIX_FMT_Y41P v4l2_fourcc('Y', '4', '1', 'P')
#define V4L2_PIX_FMT_YUV444 v4l2_fourcc('Y', '4', '4', '4')
#define V4L2_PIX_FMT_YUV555 v4l2_fourcc('Y', 'U', 'V', 'O')
#define V4L2_PIX_FMT_YUV565 v4l2_fourcc('Y', 'U', 'V', 'P')
#define V4L2_PIX_FMT_YUV32 v4l2_fourcc('Y', 'U', 'V', '4')
#define V4L2_PIX_FMT_HI240 v4l2_fourcc('H', 'I', '2', '4')
#define V4L2_PIX_FMT_HM12 v4l2_fourcc('H', 'M', '1', '2')
#define V4L2_PIX_FMT_M420 v4l2_fourcc('M', '4', '2', '0')
/* Two planes -- one Y, one Cr + Cb interleaved */
#define V4L2_PIX_FMT_NV12 v4l2_fourcc('N', 'V', '1', '2')
#define V4L2_PIX_FMT_NV21 v4l2_fourcc('N', 'V', '2', '1')
#define V4L2_PIX_FMT_NV16 v4l2_fourcc('N', 'V', '1', '6')
#define V4L2_PIX_FMT_NV61 v4l2_fourcc('N', 'V', '6', '1')
#define V4L2_PIX_FMT_NV24 v4l2_fourcc('N', 'V', '2', '4')
#define V4L2_PIX_FMT_NV42 v4l2_fourcc('N', 'V', '4', '2')
/* Two non contiguous planes - one Y, one Cr + Cb interleaved */
#define V4L2_PIX_FMT_NV12M v4l2_fourcc('N', 'M', '1', '2')
#define V4L2_PIX_FMT_NV21M v4l2_fourcc('N', 'M', '2', '1')
#define V4L2_PIX_FMT_NV16M v4l2_fourcc('N', 'M', '1', '6')
#define V4L2_PIX_FMT_NV61M v4l2_fourcc('N', 'M', '6', '1')
#define V4L2_PIX_FMT_NV12MT v4l2_fourcc('T', 'M', '1', '2')
#define V4L2_PIX_FMT_NV12MT_16X16 v4l2_fourcc('V', 'M', '1', '2')
/* Three planes - Y Cb, Cr */
#define V4L2_PIX_FMT_YUV410 v4l2_fourcc('Y', 'U', 'V', '9')
#define V4L2_PIX_FMT_YVU410 v4l2_fourcc('Y', 'V', 'U', '9')
#define V4L2_PIX_FMT_YUV411P v4l2_fourcc('4', '1', '1', 'P')
#define V4L2_PIX_FMT_YUV420 v4l2_fourcc('Y', 'U', '1', '2')
#define V4L2_PIX_FMT_YVU420 v4l2_fourcc('Y', 'V', '1', '2')
#define V4L2_PIX_FMT_YUV422P v4l2_fourcc('4', '2', '2', 'P')
/* Three non contiguous planes - Y, Cb, Cr */
#define V4L2_PIX_FMT_YUV420M v4l2_fourcc('Y', 'M', '1', '2')
#define V4L2_PIX_FMT_YVU420M v4l2_fourcc('Y', 'M', '2', '1')
#define V4L2_PIX_FMT_YUV422M v4l2_fourcc('Y', 'M', '1', '6')
#define V4L2_PIX_FMT_YVU422M v4l2_fourcc('Y', 'M', '6', '1')
#define V4L2_PIX_FMT_YUV444M v4l2_fourcc('Y', 'M', '2', '4')
#define V4L2_PIX_FMT_YVU444M v4l2_fourcc('Y', 'M', '4', '2')
/* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */
#define V4L2_PIX_FMT_SBGGR8 v4l2_fourcc('B', 'A', '8', '1')
#define V4L2_PIX_FMT_SGBRG8 v4l2_fourcc('G', 'B', 'R', 'G')
#define V4L2_PIX_FMT_SGRBG8 v4l2_fourcc('G', 'R', 'B', 'G')
#define V4L2_PIX_FMT_SRGGB8 v4l2_fourcc('R', 'G', 'G', 'B')
#define V4L2_PIX_FMT_SBGGR10 v4l2_fourcc('B', 'G', '1', '0')
#define V4L2_PIX_FMT_SGBRG10 v4l2_fourcc('G', 'B', '1', '0')
#define V4L2_PIX_FMT_SGRBG10 v4l2_fourcc('B', 'A', '1', '0')
#define V4L2_PIX_FMT_SRGGB10 v4l2_fourcc('R', 'G', '1', '0')
/* 10bit raw bayer packed, 5 bytes for every 4 pixels */
#define V4L2_PIX_FMT_SBGGR10P v4l2_fourcc('p', 'B', 'A', 'A')
#define V4L2_PIX_FMT_SGBRG10P v4l2_fourcc('p', 'G', 'A', 'A')
#define V4L2_PIX_FMT_SGRBG10P v4l2_fourcc('p', 'g', 'A', 'A')
#define V4L2_PIX_FMT_SRGGB10P v4l2_fourcc('p', 'R', 'A', 'A')
/* 10bit raw bayer a-law compressed to 8 bits */
#define V4L2_PIX_FMT_SBGGR10ALAW8 v4l2_fourcc('a', 'B', 'A', '8')
#define V4L2_PIX_FMT_SGBRG10ALAW8 v4l2_fourcc('a', 'G', 'A', '8')
#define V4L2_PIX_FMT_SGRBG10ALAW8 v4l2_fourcc('a', 'g', 'A', '8')
#define V4L2_PIX_FMT_SRGGB10ALAW8 v4l2_fourcc('a', 'R', 'A', '8')
/* 10bit raw bayer DPCM compressed to 8 bits */
#define V4L2_PIX_FMT_SBGGR10DPCM8 v4l2_fourcc('b', 'B', 'A', '8')
#define V4L2_PIX_FMT_SGBRG10DPCM8 v4l2_fourcc('b', 'G', 'A', '8')
#define V4L2_PIX_FMT_SGRBG10DPCM8 v4l2_fourcc('B', 'D', '1', '0')
#define V4L2_PIX_FMT_SRGGB10DPCM8 v4l2_fourcc('b', 'R', 'A', '8')
#define V4L2_PIX_FMT_SBGGR12 v4l2_fourcc('B', 'G', '1', '2')
#define V4L2_PIX_FMT_SGBRG12 v4l2_fourcc('G', 'B', '1', '2')
#define V4L2_PIX_FMT_SGRBG12 v4l2_fourcc('B', 'A', '1', '2')
#define V4L2_PIX_FMT_SRGGB12 v4l2_fourcc('R', 'G', '1', '2')
#define V4L2_PIX_FMT_SBGGR16 v4l2_fourcc('B', 'Y', 'R', '2')
#define V4L2_PIX_FMT_SGBRG16 v4l2_fourcc('G', 'B', '1', '6')
#define V4L2_PIX_FMT_SGRBG16 v4l2_fourcc('G', 'R', '1', '6')
#define V4L2_PIX_FMT_SRGGB16 v4l2_fourcc('R', 'G', '1', '6')
/* HSV formats */
#define V4L2_PIX_FMT_HSV24 v4l2_fourcc('H', 'S', 'V', '3')
#define V4L2_PIX_FMT_HSV32 v4l2_fourcc('H', 'S', 'V', '4')
/* Compressed formats */
#define V4L2_PIX_FMT_MJPEG v4l2_fourcc('M', 'J', 'P', 'G')
#define V4L2_PIX_FMT_JPEG v4l2_fourcc('J', 'P', 'E', 'G')
#define V4L2_PIX_FMT_DV v4l2_fourcc('d', 'v', 's', 'd')
#define V4L2_PIX_FMT_MPEG v4l2_fourcc('M', 'P', 'E', 'G')
#define V4L2_PIX_FMT_H264 v4l2_fourcc('H', '2', '6', '4')
#define V4L2_PIX_FMT_H264_NO_SC v4l2_fourcc('A', 'V', 'C', '1')
#define V4L2_PIX_FMT_H264_MVC v4l2_fourcc('M', '2', '6', '4')
#define V4L2_PIX_FMT_H263 v4l2_fourcc('H', '2', '6', '3')
#define V4L2_PIX_FMT_MPEG1 v4l2_fourcc('M', 'P', 'G', '1')
#define V4L2_PIX_FMT_MPEG2 v4l2_fourcc('M', 'P', 'G', '2')
#define V4L2_PIX_FMT_MPEG4 v4l2_fourcc('M', 'P', 'G', '4')
#define V4L2_PIX_FMT_XVID v4l2_fourcc('X', 'V', 'I', 'D')
#define V4L2_PIX_FMT_VC1_ANNEX_G v4l2_fourcc('V', 'C', '1', 'G')
#define V4L2_PIX_FMT_VC1_ANNEX_L v4l2_fourcc('V', 'C', '1', 'L')
#define V4L2_PIX_FMT_VP8 v4l2_fourcc('V', 'P', '8', '0')
#define V4L2_PIX_FMT_VP9 v4l2_fourcc('V', 'P', '9', '0')
#define V4L2_PIX_FMT_HEVC v4l2_fourcc('H', 'E', 'V', 'C')
/* JPEG + sub image */
#define V4L2_PIX_FMT_JPEG_WITH_SUBIMG v4l2_fourcc('J', 'S', 'U', 'B')
/* YUV 4:2:2 for sub image */
#define V4L2_PIX_FMT_SUBIMG_UYVY v4l2_fourcc('S', 'Y', 'U', 'V')
/* RGB565 for sub image */
#define V4L2_PIX_FMT_SUBIMG_RGB565 v4l2_fourcc('S', 'R', 'G', 'B')
/* MAX length of v4l2_fmtdesc description string */
#define V4L2_FMT_DSC_MAX (32)
/* MAX length of v4l2_query_ext_ctrl dims array */
#define V4L2_CTRL_MAX_DIMS (4)
/* MAX value of VIDIOC_REQBUFS count parameter */
#define V4L2_REQBUFS_COUNT_MAX CONFIG_VIDEO_REQBUFS_COUNT_MAX
/* Buffer error flag */
#define V4L2_BUF_FLAG_ERROR (0x0001)
/* Values for v4l2_std_id */
/* One bit for each */
#define V4L2_STD_PAL_B ((v4l2_std_id)0x00000001)
#define V4L2_STD_PAL_B1 ((v4l2_std_id)0x00000002)
#define V4L2_STD_PAL_G ((v4l2_std_id)0x00000004)
#define V4L2_STD_PAL_H ((v4l2_std_id)0x00000008)
#define V4L2_STD_PAL_I ((v4l2_std_id)0x00000010)
#define V4L2_STD_PAL_D ((v4l2_std_id)0x00000020)
#define V4L2_STD_PAL_D1 ((v4l2_std_id)0x00000040)
#define V4L2_STD_PAL_K ((v4l2_std_id)0x00000080)
#define V4L2_STD_PAL_M ((v4l2_std_id)0x00000100)
#define V4L2_STD_PAL_N ((v4l2_std_id)0x00000200)
#define V4L2_STD_PAL_Nc ((v4l2_std_id)0x00000400)
#define V4L2_STD_PAL_60 ((v4l2_std_id)0x00000800)
#define V4L2_STD_NTSC_M ((v4l2_std_id)0x00001000) /* BTSC */
#define V4L2_STD_NTSC_M_JP ((v4l2_std_id)0x00002000) /* EIA-J */
#define V4L2_STD_NTSC_443 ((v4l2_std_id)0x00004000)
#define V4L2_STD_NTSC_M_KR ((v4l2_std_id)0x00008000) /* FM A2 */
#define V4L2_STD_SECAM_B ((v4l2_std_id)0x00010000)
#define V4L2_STD_SECAM_D ((v4l2_std_id)0x00020000)
#define V4L2_STD_SECAM_G ((v4l2_std_id)0x00040000)
#define V4L2_STD_SECAM_H ((v4l2_std_id)0x00080000)
#define V4L2_STD_SECAM_K ((v4l2_std_id)0x00100000)
#define V4L2_STD_SECAM_K1 ((v4l2_std_id)0x00200000)
#define V4L2_STD_SECAM_L ((v4l2_std_id)0x00400000)
#define V4L2_STD_SECAM_LC ((v4l2_std_id)0x00800000)
/* ATSC/HDTV */
#define V4L2_STD_ATSC_8_VSB ((v4l2_std_id)0x01000000)
#define V4L2_STD_ATSC_16_VSB ((v4l2_std_id)0x02000000)
/* Some macros to merge video standards in order to make live easier for the
* drivers and V4L2 applications
*/
/* "Common" NTSC/M - It should be noticed that V4L2_STD_NTSC_443 is
* Missing here.
*/
#define V4L2_STD_NTSC (V4L2_STD_NTSC_M | \
V4L2_STD_NTSC_M_JP | \
V4L2_STD_NTSC_M_KR)
/* Secam macros */
#define V4L2_STD_SECAM_DK (V4L2_STD_SECAM_D | \
V4L2_STD_SECAM_K | \
V4L2_STD_SECAM_K1)
/* All Secam Standards */
#define V4L2_STD_SECAM (V4L2_STD_SECAM_B | \
V4L2_STD_SECAM_G | \
V4L2_STD_SECAM_H | \
V4L2_STD_SECAM_DK | \
V4L2_STD_SECAM_L | \
V4L2_STD_SECAM_LC)
/* PAL macros */
#define V4L2_STD_PAL_BG (V4L2_STD_PAL_B | \
V4L2_STD_PAL_B1 | \
V4L2_STD_PAL_G)
#define V4L2_STD_PAL_DK (V4L2_STD_PAL_D | \
V4L2_STD_PAL_D1 | \
V4L2_STD_PAL_K)
/* "Common" PAL - This macro is there to be compatible with the old
* V4L1 concept of "PAL": /BGDKHI.
* Several PAL standards are missing here: /M, /N and /Nc
*/
#define V4L2_STD_PAL (V4L2_STD_PAL_BG | \
V4L2_STD_PAL_DK | \
V4L2_STD_PAL_H | \
V4L2_STD_PAL_I)
/* Chroma "agnostic" standards */
#define V4L2_STD_B (V4L2_STD_PAL_B | \
V4L2_STD_PAL_B1 | \
V4L2_STD_SECAM_B)
#define V4L2_STD_G (V4L2_STD_PAL_G | \
V4L2_STD_SECAM_G)
#define V4L2_STD_H (V4L2_STD_PAL_H | \
V4L2_STD_SECAM_H)
#define V4L2_STD_L (V4L2_STD_SECAM_L | \
V4L2_STD_SECAM_LC)
#define V4L2_STD_GH (V4L2_STD_G | \
V4L2_STD_H)
#define V4L2_STD_DK (V4L2_STD_PAL_DK | \
V4L2_STD_SECAM_DK)
#define V4L2_STD_BG (V4L2_STD_B | \
V4L2_STD_G)
#define V4L2_STD_MN (V4L2_STD_PAL_M | \
V4L2_STD_PAL_N | \
V4L2_STD_PAL_Nc | \
V4L2_STD_NTSC)
/* Standards where MTS/BTSC stereo could be found */
#define V4L2_STD_MTS (V4L2_STD_NTSC_M | \
V4L2_STD_PAL_M | \
V4L2_STD_PAL_N | \
V4L2_STD_PAL_Nc)
/* Standards for Countries with 60Hz Line frequency */
#define V4L2_STD_525_60 (V4L2_STD_PAL_M | \
V4L2_STD_PAL_60 | \
V4L2_STD_NTSC | \
V4L2_STD_NTSC_443)
/* Standards for Countries with 50Hz Line frequency */
#define V4L2_STD_625_50 (V4L2_STD_PAL | \
V4L2_STD_PAL_N | \
V4L2_STD_PAL_Nc | \
V4L2_STD_SECAM)
#define V4L2_STD_ATSC (V4L2_STD_ATSC_8_VSB | \
V4L2_STD_ATSC_16_VSB)
/* Macros with none and all analog standards */
#define V4L2_STD_UNKNOWN 0
#define V4L2_STD_ALL (V4L2_STD_525_60 | \
V4L2_STD_625_50)
/****************************************************************************
* Public Types
****************************************************************************/
/* V4L2 device capabilities for VIDIOC_QUERYCAP.
* Currently, only member "driver" is supported.
*/
struct v4l2_capability
{
uint8_t driver[16]; /* Name of driver module(e.g. "bttv" */
uint8_t card[32]; /* Name of the card(e.g. "Yoyodyne TV/FM" */
uint8_t bus_info[32]; /* Name of the bus(e.g. "PCI:0000:05:06.0" */
uint32_t version; /* Version number of the driver */
uint32_t capabilities; /* Available capabilities of the physical device */
uint32_t device_caps; /* Device capabilities of the opened device */
};
/* Values for 'capabilities' field */
enum v4l2_capabilities
{
V4L2_CAP_VIDEO_CAPTURE = 0x00000001, /* Is a video capture device */
V4L2_CAP_VIDEO_OUTPUT = 0x00000002, /* Is a video output device */
V4L2_CAP_VIDEO_OVERLAY = 0x00000004, /* Can do video overlay */
V4L2_CAP_VBI_CAPTURE = 0x00000010, /* Is a raw VBI capture device */
V4L2_CAP_VBI_OUTPUT = 0x00000020, /* Is a raw VBI output device */
V4L2_CAP_SLICED_VBI_CAPTURE = 0x00000040, /* Is a sliced VBI capture device */
V4L2_CAP_SLICED_VBI_OUTPUT = 0x00000080, /* Is a sliced VBI output device */
V4L2_CAP_RDS_CAPTURE = 0x00000100, /* RDS data capture */
V4L2_CAP_VIDEO_OUTPUT_OVERLAY = 0x00000200, /* Can do video output overlay */
V4L2_CAP_HW_FREQ_SEEK = 0x00000400, /* Can do hardware frequency seek */
V4L2_CAP_RDS_OUTPUT = 0x00000800, /* Is an RDS encoder */
V4L2_CAP_VIDEO_CAPTURE_MPLANE = 0x00001000, /* Is a video capture device that supports multiplanar formats */
V4L2_CAP_VIDEO_OUTPUT_MPLANE = 0x00002000, /* Is a video output device that supports multiplanar formats */
V4L2_CAP_VIDEO_M2M_MPLANE = 0x00004000, /* Is a video mem-to-mem device that supports multiplanar formats */
V4L2_CAP_VIDEO_M2M = 0x00008000, /* Is a video mem-to-mem device */
V4L2_CAP_TUNER = 0x00010000, /* Has a tuner */
V4L2_CAP_AUDIO = 0x00020000, /* Has audio support */
V4L2_CAP_RADIO = 0x00040000, /* Is a radio device */
V4L2_CAP_MODULATOR = 0x00080000, /* Has a modulator */
V4L2_CAP_SDR_CAPTURE = 0x00100000, /* Is a SDR capture device */
V4L2_CAP_EXT_PIX_FORMAT = 0x00200000, /* Supports the extended pixel format */
V4L2_CAP_SDR_OUTPUT = 0x00400000, /* Is a SDR output device */
V4L2_CAP_READWRITE = 0x01000000, /* Read/write systemcalls */
V4L2_CAP_ASYNCIO = 0x02000000, /* Async I/O */
V4L2_CAP_STREAMING = 0x04000000, /* Streaming I/O ioctls */
V4L2_CAP_TOUCH = 0x10000000, /* Is a touch device */
V4L2_CAP_DEVICE_CAPS = 0x80000000, /* Sets device capabilities field */
};
/* Rectangle information */
struct v4l2_rect
{
/* Horizontal offset of the top, left corner of the rectangle, in pixels. */
int32_t left;
/* Vertical offset of the top, left corner of the rectangle, in pixels. */
int32_t top;
/* Width of the rectangle, in pixels. */
uint32_t width;
/* Height of the rectangle, in pixels. */
uint32_t height;
};
/* Fraction */
struct v4l2_fract
{
uint32_t numerator; /* Numerator */
uint32_t denominator; /* Denominator */
};
/* V4L2 selection info for VIDIOC_S_SELECTION and VIDIOC_G_SELECTION.
* Currently, only member type and r are supported.
*/
struct v4l2_selection
{
uint32_t type; /* Buffer type */
uint32_t target;
uint32_t flags;
struct v4l2_rect r; /* The selection rectangle. */
};
typedef uint64_t v4l2_std_id;
struct v4l2_standard
{
uint32_t index;
v4l2_std_id id;
uint8_t name[24];
struct v4l2_fract frameperiod; /* Frames, not fields */
uint32_t framelines;
uint32_t reserved[4];
};
/* Buffer type.
* Currently, support only V4L2_BUF_TYPE_VIDEO_CAPTURE and
* V4L2_BUF_TYPE_STILL_CAPTURE.
*/
enum v4l2_buf_type
{
V4L2_BUF_TYPE_VIDEO_CAPTURE = 1, /* Single-planar video capture stream */
V4L2_BUF_TYPE_VIDEO_OUTPUT = 2, /* Single-planar video output stream */
V4L2_BUF_TYPE_VIDEO_OVERLAY = 3, /* Video overlay */
V4L2_BUF_TYPE_VBI_CAPTURE = 4, /* Raw VBI capture stream */
V4L2_BUF_TYPE_VBI_OUTPUT = 5, /* Raw VBI output stream */
V4L2_BUF_TYPE_SLICED_VBI_CAPTURE = 6, /* Sliced VBI capture stream */
V4L2_BUF_TYPE_SLICED_VBI_OUTPUT = 7, /* Sliced VBI output stream */
V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY = 8, /* Video output overlay */
V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE = 9, /* Multi-planar video capture stream */
V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE = 10, /* Multi-planar video output stream */
V4L2_BUF_TYPE_SDR_CAPTURE = 11, /* Software Defined Radio capture stream */
V4L2_BUF_TYPE_SDR_OUTPUT = 12, /* Software Defined Radio output stream */
V4L2_BUF_TYPE_META_CAPTURE = 13, /* Metadata capture */
V4L2_BUF_TYPE_META_OUTPUT = 14, /* Metadata output */
V4L2_BUF_TYPE_PRIVATE = 0x80, /* Deprecated, do not use */
V4L2_BUF_TYPE_STILL_CAPTURE = 0x81 /* Single-planar still capture stream */
};
#define V4L2_TYPE_IS_MULTIPLANAR(type) \
((type) == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE \
|| (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
#define V4L2_TYPE_IS_OUTPUT(type) \
((type) == V4L2_BUF_TYPE_VIDEO_OUTPUT \
|| (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE \
|| (type) == V4L2_BUF_TYPE_VIDEO_OVERLAY \
|| (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY \
|| (type) == V4L2_BUF_TYPE_VBI_OUTPUT \
|| (type) == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT \
|| (type) == V4L2_BUF_TYPE_SDR_OUTPUT \
|| (type) == V4L2_BUF_TYPE_META_OUTPUT)
#define V4L2_TYPE_IS_CAPTURE(type) (!V4L2_TYPE_IS_OUTPUT(type))
/* Memory I/O method. Currently, support only V4L2_MEMORY_USERPTR. */
enum v4l2_memory
{
V4L2_MEMORY_MMAP = 1, /* Memory mapping I/O */
V4L2_MEMORY_USERPTR = 2, /* User pointer I/O */
V4L2_MEMORY_OVERLAY = 3, /* Overlay I/O */
V4L2_MEMORY_DMABUF = 4, /* DMA shared buffer I/O */
};
/* See also http://vektor.theorem.ca/graphics/ycbcr/ */
enum v4l2_colorspace
{
/* Default colorspace, i.e. let the driver figure it out.
* Can only be used with video capture.
*/
V4L2_COLORSPACE_DEFAULT = 0,
/* SMPTE 170M: used for broadcast NTSC/PAL SDTV */
V4L2_COLORSPACE_SMPTE170M = 1,
/* Obsolete pre-1998 SMPTE 240M HDTV standard, superseded by Rec 709 */
V4L2_COLORSPACE_SMPTE240M = 2,
/* Rec.709: used for HDTV */
V4L2_COLORSPACE_REC709 = 3,
/* Deprecated, do not use. No driver will ever return this. This was
* based on a misunderstanding of the bt878 datasheet.
*/
V4L2_COLORSPACE_BT878 = 4,
/* NTSC 1953 colorspace. This only makes sense when dealing with
* really, really old NTSC recordings. Superseded by SMPTE 170M.
*/
V4L2_COLORSPACE_470_SYSTEM_M = 5,
/* EBU Tech 3213 PAL/SECAM colorspace. This only makes sense when
* dealing with really old PAL/SECAM recordings. Superseded by
* SMPTE 170M.
*/
V4L2_COLORSPACE_470_SYSTEM_BG = 6,
/* Effectively shorthand for V4L2_COLORSPACE_SRGB, V4L2_YCBCR_ENC_601
* and V4L2_QUANTIZATION_FULL_RANGE. To be used for (Motion-)JPEG.
*/
V4L2_COLORSPACE_JPEG = 7,
/* For RGB colorspaces such as produces by most webcams. */
V4L2_COLORSPACE_SRGB = 8,
/* opRGB colorspace */
V4L2_COLORSPACE_OPRGB = 9,
/* BT.2020 colorspace, used for UHDTV. */
V4L2_COLORSPACE_BT2020 = 10,
/* Raw colorspace: for RAW unprocessed images */
V4L2_COLORSPACE_RAW = 11,
/* DCI-P3 colorspace, used by cinema projectors */
V4L2_COLORSPACE_DCI_P3 = 12,
};
/* Determine how COLORSPACE_DEFAULT should map to a proper colorspace.
* This depends on whether this is a SDTV image (use SMPTE 170M), an
* HDTV image (use Rec. 709), or something else (use sRGB).
*/
#define V4L2_MAP_COLORSPACE_DEFAULT(is_sdtv, is_hdtv) \
((is_sdtv) ? V4L2_COLORSPACE_SMPTE170M : \
((is_hdtv) ? V4L2_COLORSPACE_REC709 : V4L2_COLORSPACE_SRGB))
enum v4l2_xfer_func
{
/* Mapping of V4L2_XFER_FUNC_DEFAULT to actual transfer functions
* for the various colorspaces:
*
* V4L2_COLORSPACE_SMPTE170M, V4L2_COLORSPACE_470_SYSTEM_M,
* V4L2_COLORSPACE_470_SYSTEM_BG, V4L2_COLORSPACE_REC709 and
* V4L2_COLORSPACE_BT2020: V4L2_XFER_FUNC_709
*
* V4L2_COLORSPACE_SRGB, V4L2_COLORSPACE_JPEG: V4L2_XFER_FUNC_SRGB
*
* V4L2_COLORSPACE_OPRGB: V4L2_XFER_FUNC_OPRGB
*
* V4L2_COLORSPACE_SMPTE240M: V4L2_XFER_FUNC_SMPTE240M
*
* V4L2_COLORSPACE_RAW: V4L2_XFER_FUNC_NONE
*
* V4L2_COLORSPACE_DCI_P3: V4L2_XFER_FUNC_DCI_P3
*/
V4L2_XFER_FUNC_DEFAULT = 0,
V4L2_XFER_FUNC_709 = 1,
V4L2_XFER_FUNC_SRGB = 2,
V4L2_XFER_FUNC_OPRGB = 3,
V4L2_XFER_FUNC_SMPTE240M = 4,
V4L2_XFER_FUNC_NONE = 5,
V4L2_XFER_FUNC_DCI_P3 = 6,
V4L2_XFER_FUNC_SMPTE2084 = 7,
};
enum v4l2_ycbcr_encoding
{
/* Mapping of V4L2_YCBCR_ENC_DEFAULT to actual encodings for the
* various colorspaces:
*
* V4L2_COLORSPACE_SMPTE170M, V4L2_COLORSPACE_470_SYSTEM_M,
* V4L2_COLORSPACE_470_SYSTEM_BG, V4L2_COLORSPACE_SRGB,
* V4L2_COLORSPACE_OPRGB and V4L2_COLORSPACE_JPEG: V4L2_YCBCR_ENC_601
*
* V4L2_COLORSPACE_REC709 and V4L2_COLORSPACE_DCI_P3: V4L2_YCBCR_ENC_709
*
* V4L2_COLORSPACE_BT2020: V4L2_YCBCR_ENC_BT2020
*
* V4L2_COLORSPACE_SMPTE240M: V4L2_YCBCR_ENC_SMPTE240M
*/
V4L2_YCBCR_ENC_DEFAULT = 0,
/* ITU-R 601 -- SDTV */
V4L2_YCBCR_ENC_601 = 1,
/* Rec. 709 -- HDTV */
V4L2_YCBCR_ENC_709 = 2,
/* ITU-R 601/EN 61966-2-4 Extended Gamut -- SDTV */
V4L2_YCBCR_ENC_XV601 = 3,
/* Rec. 709/EN 61966-2-4 Extended Gamut -- HDTV */
V4L2_YCBCR_ENC_XV709 = 4,
/* sYCC (Y'CbCr encoding of sRGB), identical to ENC_601. It was added
* originally due to a misunderstanding of the sYCC standard. It should
* not be used, instead use V4L2_YCBCR_ENC_601.
*/
V4L2_YCBCR_ENC_SYCC = 5,
/* BT.2020 Non-constant Luminance Y'CbCr */
V4L2_YCBCR_ENC_BT2020 = 6,
/* BT.2020 Constant Luminance Y'CbcCrc */
V4L2_YCBCR_ENC_BT2020_CONST_LUM = 7,
/* SMPTE 240M -- Obsolete HDTV */
V4L2_YCBCR_ENC_SMPTE240M = 8,
};
enum v4l2_quantization
{
/* The default for R'G'B' quantization is always full range.
* For Y'CbCr the quantization is always limited range, except
* for COLORSPACE_JPEG: this is full range.
*/
V4L2_QUANTIZATION_DEFAULT = 0,
V4L2_QUANTIZATION_FULL_RANGE = 1,
V4L2_QUANTIZATION_LIM_RANGE = 2,
};
/* Field order. Currently, support only V4L2_FIELD_ANY */
enum v4l2_field
{
V4L2_FIELD_ANY = 0, /* Driver can choose from none, */
V4L2_FIELD_NONE = 1, /* This device has no fields ... */
V4L2_FIELD_TOP = 2, /* Top field only */
V4L2_FIELD_BOTTOM = 3, /* Bottom field only */
V4L2_FIELD_INTERLACED = 4, /* Both fields interlaced */
V4L2_FIELD_SEQ_TB = 5, /* Both fields sequential into one */
V4L2_FIELD_SEQ_BT = 6, /* Same as above + bottom-top order */
V4L2_FIELD_ALTERNATE = 7, /* Both fields alternating into */
V4L2_FIELD_INTERLACED_TB = 8, /* Both fields interlaced, top field */
V4L2_FIELD_INTERLACED_BT = 9, /* Both fields interlaced, top field */
};
/* Buffer mode */
enum v4l2_buf_mode
{
V4L2_BUF_MODE_RING = 0, /* Ring structure */
V4L2_BUF_MODE_FIFO = 1, /* FIFO structure */
};
struct v4l2_requestbuffers
{
uint32_t count; /* The number of buffers requested.
* Supported maximum is
* is V4L2_REQBUFS_COUNT_MAX
*/
uint32_t type; /* enum #v4l2_buf_type */
uint32_t memory; /* enum #v4l2_memory */
uint32_t mode; /* enum #v4l2_buf_mode */
};
typedef struct v4l2_requestbuffers v4l2_requestbuffers_t;
struct v4l2_timecode
{
uint32_t type;
uint32_t flags;
uint8_t frames;
uint8_t seconds;
uint8_t minutes;
uint8_t hours;
uint8_t userbits[4];
};
typedef struct v4l2_timecode v4l2_timecode_t;
struct v4l2_plane
{
uint32_t bytesused;
uint32_t length;
union
{
uint32_t mem_offset;
unsigned long userptr;
int fd;
} m;
uint32_t data_offset;
uint32_t reserved[11];
};
typedef struct v4l2_plane v4l2_plane_t;
/* struct v4l2_buffer
* Parameter of ioctl(VIDIOC_QBUF) and ioctl(VIDIOC_DQBUF).
* Currently, support only index, type, bytesused, memory,
* m.userptr, and length.
*/
struct v4l2_buffer
{
uint32_t index; /* Buffer id */
uint32_t type; /* enum #v4l2_buf_type */
uint32_t bytesused; /* Driver sets the image size */
uint32_t flags; /* Buffer flags. */
uint32_t field; /* The field order of the image */
struct timeval timestamp; /* Frame timestamp */
struct v4l2_timecode timecode; /* Frame timecode */
uint32_t sequence; /* Frame sequence number */
uint32_t memory; /* enum #v4l2_memory */
union
{
uint32_t offset;
unsigned long userptr; /* Address of buffer */
struct v4l2_plane *planes;
int fd;
} m;
uint32_t length; /* User set the buffer size */
};
typedef struct v4l2_buffer v4l2_buffer_t;
/* Image is a keyframe (I-frame) */
#define V4L2_BUF_FLAG_KEYFRAME 0x00000008
/* mem2mem encoder/decoder */
#define V4L2_BUF_FLAG_LAST 0x00100000
struct v4l2_fmtdesc
{
uint16_t index; /* Format number */
uint16_t type; /* enum v4l2_buf_type */
uint32_t flags;
char description[V4L2_FMT_DSC_MAX]; /* Description string */
uint32_t pixelformat; /* Format fourcc */
};
enum v4l2_fmt_flag
{
V4L2_FMT_FLAG_COMPRESSED = 0x0001, /* This is a compressed format */
V4L2_FMT_FLAG_EMULATED = 0x0002, /* This format is not native */
};
enum v4l2_frmsizetypes
{
V4L2_FRMSIZE_TYPE_DISCRETE = 1, /* Discrete value */
V4L2_FRMSIZE_TYPE_CONTINUOUS = 2, /* Continuous value */
V4L2_FRMSIZE_TYPE_STEPWISE = 3, /* Step value */
};
struct v4l2_frmsize_discrete
{
uint16_t width; /* Frame width [pixel] */
uint16_t height; /* Frame height [pixel] */
};
struct v4l2_frmsize_stepwise
{
uint16_t min_width; /* Minimum frame width [pixel] */
uint16_t max_width; /* Maximum frame width [pixel] */
uint16_t step_width; /* Frame width step size [pixel] */
uint16_t min_height; /* Minimum frame height [pixel] */
uint16_t max_height; /* Maximum frame height [pixel] */
uint16_t step_height; /* Frame height step size [pixel] */
};
struct v4l2_frmsizeenum
{
uint32_t index; /* Frame size number */
uint32_t buf_type; /* enum #v4l2_buf_type */
uint32_t pixel_format; /* Pixel format */
uint32_t type; /* Frame size type the device supports. */
/* In type == V4L2_FRMSIZE_TYPE_DISCRETE case, use discrete.
* Otherwise, use stepwise.
*/
union
{
struct v4l2_frmsize_discrete discrete;
struct v4l2_frmsize_stepwise stepwise;
};
};
/* Type of frame interval enumeration */
enum v4l2_frmivaltypes
{
V4L2_FRMIVAL_TYPE_DISCRETE = 1, /* Discrete value */
V4L2_FRMIVAL_TYPE_CONTINUOUS = 2, /* Continuous value */
V4L2_FRMIVAL_TYPE_STEPWISE = 3, /* Step value */
};
/* Frame interval enumeration with stepwise format */
struct v4l2_frmival_stepwise
{
struct v4l2_fract min; /* Minimum frame interval [s] */
struct v4l2_fract max; /* Maximum frame interval [s] */
struct v4l2_fract step; /* Frame interval step size [s] */
};
struct v4l2_frmivalenum
{
uint32_t index; /* Frame format index */
uint32_t buf_type; /* enum #v4l2_buf_type */
uint32_t pixel_format; /* Pixel format */
uint16_t width; /* Frame width */
uint16_t height; /* Frame height */
uint32_t type; /* Frame interval type */
union
{ /* Frame interval */
struct v4l2_fract discrete;
struct v4l2_frmival_stepwise stepwise;
};
};
/* Single-planar format structure. */
struct v4l2_pix_format
{
uint32_t width; /* Image width in pixels */
uint32_t height; /* Image height in pixels */
uint32_t pixelformat; /* The pixel format or type of compression. */
uint32_t field; /* enum #v4l2_field */
uint32_t bytesperline; /* For padding, zero if unused */
uint32_t sizeimage; /* Size in bytes of the buffer to hold a complete image */
uint32_t colorspace; /* Image colorspace */
uint32_t priv; /* Private data, depends on pixelformat */
uint32_t flags; /* Format flags (V4L2_PIX_FMT_FLAG_*) */
union
{
uint32_t ycbcr_enc; /* enum v4l2_ycbcr_encoding */
uint32_t hsv_enc; /* enum v4l2_hsv_encoding */
};
uint32_t quantization; /* enum v4l2_quantization */
uint32_t xfer_func; /* enum v4l2_xfer_func */
};
typedef struct v4l2_pix_format v4l2_pix_format_t;
/* struct v4l2_plane_pix_format - additional, per-plane format definition
* sizeimage: maximum size in bytes required for data, for which
* this plane will be used
* bytesperline: distance in bytes between the leftmost pixels in two
* adjacent lines
*/
struct v4l2_plane_pix_format
{
uint32_t sizeimage;
uint32_t bytesperline;
uint16_t reserved[6];
};
/* struct v4l2_pix_format_mplane - multiplanar format definition
* width: image width in pixels
* height: image height in pixels
* pixelformat: little endian four character code (fourcc)
* field: enum v4l2_field; field order (for interlaced video)
* colorspace: enum v4l2_colorspace; supplemental to pixelformat
* plane_fmt: per-plane information
* num_planes: number of planes for this format
* flags: format flags (V4L2_PIX_FMT_FLAG_*)
* ycbcr_enc: enum v4l2_ycbcr_encoding, Y'CbCr encoding
* quantization: enum v4l2_quantization, colorspace quantization
* xfer_func: enum v4l2_xfer_func, colorspace transfer function
*/
struct v4l2_pix_format_mplane
{
uint32_t width;
uint32_t height;
uint32_t pixelformat;
uint32_t field;
uint32_t colorspace;
struct v4l2_plane_pix_format plane_fmt[VIDEO_MAX_PLANES];
uint8_t num_planes;
uint8_t flags;
union
{
uint8_t ycbcr_enc;
uint8_t hsv_enc;
};
uint8_t quantization;
uint8_t xfer_func;
uint8_t reserved[7];
};
struct v4l2_format
{
uint32_t type; /* enum #v4l2_buf_type. */
union
{
struct v4l2_pix_format pix; /* Image format */
struct v4l2_pix_format_mplane pix_mp; /* V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE */
} fmt;
};
typedef struct v4l2_format v4l2_format_t;
struct v4l2_captureparm
{
uint32_t capability; /* Supported modes */
uint32_t capturemode; /* Current mode */
struct v4l2_fract timeperframe; /* Time per frame in seconds */
uint32_t extendedmode; /* Driver-specific extensions */
uint32_t readbuffers; /* # of buffers for read */
};
struct v4l2_outputparm
{
uint32_t capability; /* Supported modes */
uint32_t outputmode; /* Current mode */
struct v4l2_fract timeperframe; /* Time per frame in seconds */
uint32_t extendedmode; /* Driver-specific extensions */
uint32_t writebuffers; /* # of buffers for write */
uint32_t reserved[4];
};
struct v4l2_cropcap
{
uint32_t type; /* enum v4l2_buf_type */
struct v4l2_rect bounds;
struct v4l2_rect defrect;
struct v4l2_fract pixelaspect;
};
/* Flags for 'capability' and 'capturemode' fields */
enum v4l2_capture_mode
{
V4L2_MODE_HIGHQUALITY = 0x0001, /* High quality imaging mode */
};
enum v4l2_capture_capability
{
V4L2_CAP_TIMEPERFRAME = 0x1000, /* timeperframe field is supported */
};
struct v4l2_streamparm
{
uint32_t type; /* enum v4l2_buf_type */
union
{
struct v4l2_captureparm capture;
struct v4l2_outputparm output;
} parm;
uint8_t raw_data[200]; /* user-defined */
};
/* E V E N T S */
#define V4L2_EVENT_ALL 0
#define V4L2_EVENT_VSYNC 1
#define V4L2_EVENT_EOS 2
#define V4L2_EVENT_CTRL 3
#define V4L2_EVENT_FRAME_SYNC 4
#define V4L2_EVENT_SOURCE_CHANGE 5
#define V4L2_EVENT_MOTION_DET 6
#define V4L2_EVENT_PRIVATE_START 0x08000000
/* Payload for V4L2_EVENT_VSYNC */
struct v4l2_event_vsync
{
/* Can be V4L2_FIELD_ANY, _NONE, _TOP or _BOTTOM */
uint8_t field;
};
/* Payload for V4L2_EVENT_CTRL */
#define V4L2_EVENT_CTRL_CH_VALUE (1 << 0)
#define V4L2_EVENT_CTRL_CH_FLAGS (1 << 1)
#define V4L2_EVENT_CTRL_CH_RANGE (1 << 2)
struct v4l2_event_ctrl
{
uint32_t changes;
uint32_t type;
union
{
int32_t value;
int64_t value64;
};
uint32_t flags;
int32_t minimum;
int32_t maximum;
int32_t step;
int32_t default_value;
};
struct v4l2_event_frame_sync
{
uint32_t frame_sequence;
};
#define V4L2_EVENT_SRC_CH_RESOLUTION (1 << 0)
struct v4l2_event_src_change
{
uint32_t changes;
};
#define V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ (1 << 0)
/* struct v4l2_event_motion_det - motion detection event
* flags: if V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ is set, then the
* frame_sequence field is valid.
* frame_sequence: the frame sequence number associated with this event.
* region_mask: which regions detected motion.
*/
struct v4l2_event_motion_det
{
uint32_t flags;
uint32_t frame_sequence;
uint32_t region_mask;
};
struct v4l2_event
{
uint32_t type;
union
{
struct v4l2_event_vsync vsync;
struct v4l2_event_ctrl ctrl;
struct v4l2_event_frame_sync frame_sync;
struct v4l2_event_src_change src_change;
struct v4l2_event_motion_det motion_det;
uint8_t data[64];
} u;
uint32_t pending;
uint32_t sequence;
struct timespec timestamp;
uint32_t id;
uint32_t reserved[8];
};
#define V4L2_EVENT_SUB_FL_SEND_INITIAL (1 << 0)
#define V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK (1 << 1)
struct v4l2_event_subscription
{
uint32_t type;
uint32_t id;
uint32_t flags;
uint32_t reserved[5];
};
enum v4l2_ctrl_type
{
V4L2_CTRL_TYPE_INTEGER = 1,
V4L2_CTRL_TYPE_BOOLEAN = 2,
V4L2_CTRL_TYPE_MENU = 3,
V4L2_CTRL_TYPE_BUTTON = 4,
V4L2_CTRL_TYPE_INTEGER64 = 5,
V4L2_CTRL_TYPE_CTRL_CLASS = 6,
V4L2_CTRL_TYPE_STRING = 7,
V4L2_CTRL_TYPE_BITMASK = 8,
V4L2_CTRL_TYPE_INTEGER_MENU = 9,
V4L2_CTRL_TYPE_U8FIXEDPOINT_Q7 = 10,
V4L2_CTRL_TYPE_U16FIXEDPOINT_Q8 = 11,
V4L2_CTRL_TYPE_INTEGER_TIMES_3 = 12,
/* Compound types are >= 0x0100 */
V4L2_CTRL_COMPOUND_TYPES = 0x0100,
V4L2_CTRL_TYPE_U8 = 0x0100,
V4L2_CTRL_TYPE_U16 = 0x0101,
V4L2_CTRL_TYPE_U32 = 0x0102,
};
struct v4l2_queryctrl
{
uint16_t ctrl_class; /* Control class(not used) */
uint16_t id; /* Control id */
uint16_t type; /* enum #v4l2_ctrl_type */
char name[32]; /* Name of control */
int32_t minimum; /* Minimum value */
int32_t maximum; /* Maximum value */
uint32_t step; /* Step */
int32_t default_value; /* Default value */
uint32_t flags; /* Flag */};
struct v4l2_query_ext_ctrl
{
uint16_t ctrl_class; /* Control class(not used) */
uint16_t id; /* Control id */
uint16_t type; /* enum #v4l2_ctrl_type */
char name[32]; /* Name of control */
int64_t minimum; /* Minimum value */
int64_t maximum; /* Maximum value */
uint64_t step; /* Step */
int64_t default_value; /* Default value */
uint32_t flags; /* Flag */
uint32_t elem_size; /* Size of each element */
uint32_t elems; /* Number of elements */
uint32_t nr_of_dims; /* Number of dimensions */
uint32_t dims[V4L2_CTRL_MAX_DIMS]; /* Dimensions */
};
struct v4l2_querymenu
{
uint16_t ctrl_class; /* Camera control class(not used) */
uint16_t id; /* Camera control id */
uint32_t index; /* Index of menu. */
union
{
char name[32]; /* Name of menu */
int64_t value; /* Value of menu */
};
};
struct v4l2_input
{
uint32_t index; /* Which input */
uint8_t name[32]; /* Label */
uint32_t type; /* Type of input */
uint32_t audioset; /* Associated audios (bitfield) */
uint32_t tuner; /* enum v4l2_tuner_type */
v4l2_std_id std;
uint32_t status;
uint32_t capabilities;
uint32_t reserved[3];
};
/* Values for the 'type' field */
enum v4l2_input_type
{
V4L2_INPUT_TYPE_TUNER = 1,
V4L2_INPUT_TYPE_CAMERA = 2,
V4L2_INPUT_TYPE_TOUCH = 3,
};
enum v4l2_input_status
{
/* Field 'status' - general */
V4L2_IN_ST_NO_POWER = 0x00000001, /* Attached device is off */
V4L2_IN_ST_NO_SIGNAL = 0x00000002,
V4L2_IN_ST_NO_COLOR = 0x00000004,
/* Field 'status' - sensor orientation */
/* If sensor is mounted upside down set both bits */
V4L2_IN_ST_HFLIP = 0x00000010, /* Frames are flipped horizontally */
V4L2_IN_ST_VFLIP = 0x00000020, /* Frames are flipped vertically */
/* Field 'status' - analog */
V4L2_IN_ST_NO_H_LOCK = 0x00000100, /* No horizontal sync lock */
V4L2_IN_ST_COLOR_KILL = 0x00000200, /* Color killer is active */
V4L2_IN_ST_NO_V_LOCK = 0x00000400, /* No vertical sync lock */
V4L2_IN_ST_NO_STD_LOCK = 0x00000800, /* No standard format lock */
/* Field 'status' - digital */
V4L2_IN_ST_NO_SYNC = 0x00010000, /* No synchronization lock */
V4L2_IN_ST_NO_EQU = 0x00020000, /* No equalizer lock */
V4L2_IN_ST_NO_CARRIER = 0x00040000, /* Carrier recovery failed */
/* Field 'status' - VCR and set-top box */
V4L2_IN_ST_MACROVISION = 0x01000000, /* Macrovision detected */
V4L2_IN_ST_NO_ACCESS = 0x02000000, /* Conditional access denied */
V4L2_IN_ST_VTR = 0x04000000, /* VTR time constant */
};
/* Capabilities flags */
enum v4l2_input_capabilities
{
V4L2_IN_CAP_DV_TIMINGS = 0x00000002, /* Supports S_DV_TIMINGS */
V4L2_IN_CAP_STD = 0x00000004, /* Supports S_STD */
V4L2_IN_CAP_NATIVE_SIZE = 0x00000008, /* Supports setting native size */
};
enum v4l2_input_capabilites_compat
{
V4L2_IN_CAP_CUSTOM_TIMINGS = V4L2_IN_CAP_DV_TIMINGS, /* For compatibility */
};
struct v4l2_output
{
uint32_t index; /* Which output */
uint8_t name[32]; /* Label */
uint32_t type; /* Type of output */
uint32_t audioset; /* Associated audios (bitfield) */
uint32_t modulator; /* Associated modulator */
v4l2_std_id std;
uint32_t capabilities;
uint32_t reserved[3];
};
/* Values for the 'type' field */
enum v4l2_output_type
{
V4L2_OUTPUT_TYPE_MODULATOR = 1,
V4L2_OUTPUT_TYPE_ANALOG = 2,
V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY = 3,
};
/* Capabilities flags */
enum v4l2_output_capabilities
{
V4L2_OUT_CAP_DV_TIMINGS = 0x00000002, /* Supports S_DV_TIMINGS */
V4L2_OUT_CAP_STD = 0x00000004, /* Supports S_STD */
V4L2_OUT_CAP_NATIVE_SIZE = 0x00000008, /* Supports setting native size */
};
enum v4l2_output_capabilites_compat
{
V4L2_OUT_CAP_CUSTOM_TIMINGS = V4L2_OUT_CAP_DV_TIMINGS, /* For compatibility */
};
struct v4l2_control
{
uint16_t id;
int32_t value;
};
/* Structure for each control of
* ioctl(VIDIOC_G_EXT_CTRLS / VIDIOC_S_EXT_CTRLS)
*/
struct v4l2_ext_control
{
uint16_t id; /* Camera control id */
uint16_t size; /* Size of value(not use) */
union
{
int32_t value; /* QUERY_EXT_CTRL type = INTEGER, xxx */
int64_t value64; /* QUERY_EXT_CTRL type = INTEGER64, MENU */
char *string;
uint8_t *p_u8; /* QUERY_EXT_CTRL type = U8 */
uint16_t *p_u16; /* QUERY_EXT_CTRL type = U16 */
uint32_t *p_u32; /* QUERY_EXT_CTRL type = U32 */
void *ptr;
};
};
struct v4l2_ext_controls
{
union
{
uint16_t ctrl_class; /* Camera control class */
uint16_t which;
};
uint16_t count; /* Number of requests */
uint16_t error_idx; /* Index in that error occurred */
struct v4l2_ext_control *controls; /* Each control information */
};
/* Structure for V4SIOC_S_EXT_CTRLS and V4SIOC_G_EXT_CTRLS */
struct v4s_ext_controls_scene
{
enum v4l2_scene_mode mode; /* Scene mode to be controled */
struct v4l2_ext_controls control; /* Same as VIDIOC_S_EXT_CTRLS */
};
/* Structure for V4SIOC_QUERY_EXT_CTRL */
struct v4s_query_ext_ctrl_scene
{
enum v4l2_scene_mode mode; /* Scene mode to be queried */
struct v4l2_query_ext_ctrl control; /* Same as VIDIOC_QUERY_EXT_CTRL */
};
/* Structure for V4SIOC_QUERYMENU */
struct v4s_querymenu_scene
{
enum v4l2_scene_mode mode; /* Scene mode to be queried */
struct v4l2_querymenu menu; /* Same as VIDIOC_QUERYMENU */
};
#define V4L2_ENC_CMD_START (0)
#define V4L2_ENC_CMD_STOP (1)
#define V4L2_ENC_CMD_PAUSE (2)
#define V4L2_ENC_CMD_RESUME (3)
/* Flags for V4L2_ENC_CMD_STOP */
#define V4L2_ENC_CMD_STOP_AT_GOP_END (1 << 0)
struct v4l2_encoder_cmd
{
uint32_t cmd;
uint32_t flags;
union
{
struct
{
uint32_t data[8];
} raw;
};
};
/* Decoder commands */
#define V4L2_DEC_CMD_START (0)
#define V4L2_DEC_CMD_STOP (1)
#define V4L2_DEC_CMD_PAUSE (2)
#define V4L2_DEC_CMD_RESUME (3)
/* The structure must be zeroed before use by the application
* This ensures it can be extended safely in the future.
*/
struct v4l2_decoder_cmd
{
uint32_t cmd;
uint32_t flags;
union
{
struct
{
uint64_t pts;
} stop;
struct
{
/* 0 or 1000 specifies normal speed,
* 1 specifies forward single stepping,
* -1 specifies backward single stepping,
* >1: playback at speed/1000 of the normal speed,
* <-1: reverse playback at (-speed/1000) of the normal speed.
*/
int32_t speed;
uint32_t format;
} start;
struct
{
uint32_t data[16];
} raw;
};
};
/* Query device capability
* Address pointing to struct v4l2_capability
*/
#define VIDIOC_QUERYCAP _VIDIOC(0x0000)
/* Enumerate the formats supported by device */
#define VIDIOC_ENUM_FMT _VIDIOC(0x0002)
/* Get the data format */
#define VIDIOC_G_FMT _VIDIOC(0x0004)
/* Set the data format */
#define VIDIOC_S_FMT _VIDIOC(0x0005)
/* Initiate user pointer I/O */
#define VIDIOC_REQBUFS _VIDIOC(0x0008)
/* Query the status of a buffer */
#define VIDIOC_QUERYBUF _VIDIOC(0x0009)
/* Get frame buffer overlay parameters */
#define VIDIOC_G_FBUF _VIDIOC(0x000a)
/* Set frame buffer overlay parameters */
#define VIDIOC_S_FBUF _VIDIOC(0x000b)
/* Start or stop video overlay */
#define VIDIOC_OVERLAY _VIDIOC(0x000e)
/* Enqueue an empty buffer */
#define VIDIOC_QBUF _VIDIOC(0x000f)
/* Export a buffer as a DMABUF file descriptor */
#define VIDIOC_EXPBUF _VIDIOC(0x0010)
/* Dequeue a filled buffer */
#define VIDIOC_DQBUF _VIDIOC(0x0011)
/* Start streaming */
#define VIDIOC_STREAMON _VIDIOC(0x0012)
/* Stop streaming */
#define VIDIOC_STREAMOFF _VIDIOC(0x0013)
/* Get streaming parameters */
#define VIDIOC_G_PARM _VIDIOC(0x0015)
/* Set streaming parameters */
#define VIDIOC_S_PARM _VIDIOC(0x0016)
/* Query the video standard of the current input */
#define VIDIOC_G_STD _VIDIOC(0x0017)
/* Select the video standard of the current input */
#define VIDIOC_S_STD _VIDIOC(0x0018)
/* Enumerate supported video standards */
#define VIDIOC_ENUMSTD _VIDIOC(0x0019)
/* Enumerate video inputs */
#define VIDIOC_ENUMINPUT _VIDIOC(0x001a)
/* Get current control value.
* This request is a special case of VIDIOC_G_EXT_CTRLS.
* Address pointing to struct #v4l2_control
*/
#define VIDIOC_G_CTRL _VIDIOC(0x001b)
/* Set control value.
* This request is a special case of VIDIOC_S_EXT_CTRLS.
* Address pointing to struct #v4l2_control
*/
#define VIDIOC_S_CTRL _VIDIOC(0x001c)
/* Query control */
#define VIDIOC_QUERYCTRL _VIDIOC(0x0024)
/* Query menu */
#define VIDIOC_QUERYMENU _VIDIOC(0x0025)
/* Get video input */
#define VIDIOC_G_INPUT _VIDIOC(0x0026)
/* Set video input */
#define VIDIOC_S_INPUT _VIDIOC(0x0027)
/* Set video crop and scale */
#define VIDIOC_CROPCAP _VIDIOC(0x003a)
/* Query video standard */
#define VIDIOC_QUERYSTD _VIDIOC(0x003f)
/* Try format */
#define VIDIOC_TRY_FMT _VIDIOC(0x0040)
/* Get current control value
* Address pointing to struct #v4l2_ext_controls
*/
#define VIDIOC_G_EXT_CTRLS _VIDIOC(0x0047)
/* Set control value
* Address pointing to struct #v4l2_ext_controls
*/
#define VIDIOC_S_EXT_CTRLS _VIDIOC(0x0048)
/* Try control value
* Address pointing to struct #v4l2_ext_controls
*/
#define VIDIOC_TRY_EXT_CTRLS _VIDIOC(0x0049)
/* Enumerate the framesizes supported by device */
#define VIDIOC_ENUM_FRAMESIZES _VIDIOC(0x004a)
/* Enumerate the frameintervals supported by device */
#define VIDIOC_ENUM_FRAMEINTERVALS _VIDIOC(0x004b)
/* Execute an encoder command */
#define VIDIOC_ENCODER_CMD _VIDIOC(0x004d)
/* Dequeue event */
#define VIDIOC_DQEVENT _VIDIOC(0x0059)
/* Subscribe or unsubscribe event */
#define VIDIOC_SUBSCRIBE_EVENT _VIDIOC(0x005a)
/* Get clip
* Address pointing to struct v4l2_selection
*/
#define VIDIOC_G_SELECTION _VIDIOC(0x005e)
/* Set clip
* Address pointing to struct v4l2_selection
*/
#define VIDIOC_S_SELECTION _VIDIOC(0x005f)
/* Execute an decoder command */
#define VIDIOC_DECODER_CMD _VIDIOC(0x0060)
/* Query control */
#define VIDIOC_QUERY_EXT_CTRL _VIDIOC(0x00c0)
/* Cancel DQBUF
* enum #v4l2_buf_type
*/
#define VIDIOC_CANCEL_DQBUF _VIDIOC(0x00c1)
/* Do halfpush */
#define VIDIOC_DO_HALFPUSH _VIDIOC(0x00c2)
/* Start taking picture
*
* Type is int32_t, not address pointer.\n
* 0 or negative value means continuing until VIDIOC_TAKEPICT_STOP. \n
* Positive value(to be supported) means continuing
* up to a specified number of times or until VIDIOC_TAKEPICT_STOP.
*/
#define VIDIOC_TAKEPICT_START _VIDIOC(0x00c3)
/* Stop taking picture */
#define VIDIOC_TAKEPICT_STOP _VIDIOC(0x00c4)
/* Query control for scene parameter
* Address pointing to struct v4s_query_ext_ctrl_scene
*/
#define V4SIOC_QUERY_EXT_CTRL_SCENE _VIDIOC(0x00c5)
/* Query menu for scene parameter
* Address pointing to struct v4s_querymenu_scene
*/
#define V4SIOC_QUERYMENU_SCENE _VIDIOC(0x00c6)
/* Get current control value
* Address pointing to struct v4s_ext_controls_scene
*/
#define V4SIOC_G_EXT_CTRLS_SCENE _VIDIOC(0x00c7)
/* Set control value
* Address pointing to struct v4s_ext_controls_scene
*/
#define V4SIOC_S_EXT_CTRLS_SCENE _VIDIOC(0x00c8)
#ifdef __cplusplus
}
#endif
#endif /* __INCLUDE_SYS_VIDEOIO_H */
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