video-controls.h File Reference

Public APIs for Video. More...

#include <stdint.h>

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Data Structures
struct	video_control
	Video control structure. More...
struct	video_ctrl_range
struct	video_ctrl_query

Macros
Stateful codec controls IDs
#define	VIDEO_CID_CODEC_CLASS_BASE   0x00990900
Camera Flash class control IDs
#define	VIDEO_CID_FLASH_CLASS_BASE   0x009c0900
JPEG class control IDs
#define	VIDEO_CID_JPEG_CLASS_BASE   0x009d0900
#define	VIDEO_CID_JPEG_COMPRESSION_QUALITY   (VIDEO_CID_JPEG_CLASS_BASE + 3)
	Quality (Q) factor of the JPEG algorithm, also increasing the data size.
Image Source class control IDs
#define	VIDEO_CID_IMAGE_SOURCE_CLASS_BASE   0x009e0900
#define	VIDEO_CID_ANALOGUE_GAIN   (VIDEO_CID_IMAGE_SOURCE_CLASS_BASE + 3)
	Analogue gain control.
Image Processing class control IDs
#define	VIDEO_CID_IMAGE_PROC_CLASS_BASE   0x009f0900
#define	VIDEO_CID_PIXEL_RATE   (VIDEO_CID_IMAGE_PROC_CLASS_BASE + 2)
	Pixel rate (pixels/second) in the device's pixel array.
#define	VIDEO_CID_TEST_PATTERN   (VIDEO_CID_IMAGE_PROC_CLASS_BASE + 3)
	Selection of the type of test pattern to represent.
Vendor-specific class control IDs
#define	VIDEO_CID_PRIVATE_BASE   0x08000000
Query flags, to be ORed with the control ID
#define	VIDEO_CTRL_FLAG_NEXT_CTRL   0x80000000

Base class control IDs
#define	VIDEO_CID_BASE   0x00980900
#define	VIDEO_CID_BRIGHTNESS   (VIDEO_CID_BASE + 0)
	Amount of perceived light of the image, the luma (Y') value.
#define	VIDEO_CID_CONTRAST   (VIDEO_CID_BASE + 1)
	Amount of difference between the bright colors and dark colors.
#define	VIDEO_CID_SATURATION   (VIDEO_CID_BASE + 2)
	Colorfulness of the image while preserving its brightness.
#define	VIDEO_CID_HUE   (VIDEO_CID_BASE + 3)
	Shift in the tint of every colors, clockwise in a RGB color wheel.
#define	VIDEO_CID_EXPOSURE   (VIDEO_CID_BASE + 17)
	Amount of time an image sensor is exposed to light, affecting the brightness.
#define	VIDEO_CID_AUTOGAIN   (VIDEO_CID_BASE + 18)
	Automatic gain control.
#define	VIDEO_CID_GAIN   (VIDEO_CID_BASE + 19)
	Gain control.
#define	VIDEO_CID_HFLIP   (VIDEO_CID_BASE + 20)
	Flip the image horizontally: the left side becomes the right side.
#define	VIDEO_CID_VFLIP   (VIDEO_CID_BASE + 21)
	Flip the image vertically: the top side becomes the bottom side.
#define	VIDEO_CID_POWER_LINE_FREQUENCY   (VIDEO_CID_BASE + 24)
	Frequency of the power line to compensate for, avoiding flicker due to artificial lighting.
#define	VIDEO_CID_WHITE_BALANCE_TEMPERATURE   (VIDEO_CID_BASE + 26)
	Balance of colors in direction of blue (cold) or red (warm)
#define	VIDEO_CID_LASTP1   (VIDEO_CID_BASE + 44)
	Last base CID + 1.
enum	video_power_line_frequency { VIDEO_CID_POWER_LINE_FREQUENCY_DISABLED = 0 , VIDEO_CID_POWER_LINE_FREQUENCY_50HZ = 1 , VIDEO_CID_POWER_LINE_FREQUENCY_60HZ = 2 , VIDEO_CID_POWER_LINE_FREQUENCY_AUTO = 3 }

Camera class controls IDs
#define	VIDEO_CID_CAMERA_CLASS_BASE   0x009a0900
#define	VIDEO_CID_EXPOSURE_AUTO   (VIDEO_CID_CAMERA_CLASS_BASE + 1)
	Adjustments of exposure time and/or iris aperture.
#define	VIDEO_CID_ZOOM_ABSOLUTE   (VIDEO_CID_CAMERA_CLASS_BASE + 13)
	Amount of optical zoom applied through to the camera optics.
enum	video_exposure_auto_type { VIDEO_EXPOSURE_AUTO = 0 , VIDEO_EXPOSURE_MANUAL = 1 , VIDEO_EXPOSURE_SHUTTER_PRIORITY = 2 , VIDEO_EXPOSURE_APERTURE_PRIORITY = 3 }

Detailed Description

Public APIs for Video.