video-controls.h File Reference

Public APIs for Video. More...

#include <stdint.h>

Go to the source code of this file.

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)
	Picture brightness, or more precisely, the black level.
#define	VIDEO_CID_CONTRAST   (VIDEO_CID_BASE + 1)
	Picture contrast or luma gain.
#define	VIDEO_CID_SATURATION   (VIDEO_CID_BASE + 2)
	Picture color saturation or chroma gain.
#define	VIDEO_CID_HUE   (VIDEO_CID_BASE + 3)
	Hue or color balance.
#define	VIDEO_CID_AUTO_WHITE_BALANCE   (VIDEO_CID_BASE + 12)
	Automatic white balance (cameras).
#define	VIDEO_CID_RED_BALANCE   (VIDEO_CID_BASE + 14)
	Red chroma balance, as a ratio to the green channel.
#define	VIDEO_CID_BLUE_BALANCE   (VIDEO_CID_BASE + 15)
	Blue chroma balance, as a ratio to the green channel.
#define	VIDEO_CID_GAMMA   (VIDEO_CID_BASE + 16)
	Gamma adjust.
#define	VIDEO_CID_EXPOSURE   (VIDEO_CID_BASE + 17)
	Image sensor exposure time.
#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_HUE_AUTO   (VIDEO_CID_BASE + 25)
	Enables automatic hue control by the device.
#define	VIDEO_CID_WHITE_BALANCE_TEMPERATURE   (VIDEO_CID_BASE + 26)
	White balance settings as a color temperature in Kelvin.
#define	VIDEO_CID_SHARPNESS   (VIDEO_CID_BASE + 27)
	Adjusts the sharpness filters in a camera.
#define	VIDEO_CID_BACKLIGHT_COMPENSATION   (VIDEO_CID_BASE + 28)
	Adjusts the backlight compensation in a camera.
#define	VIDEO_CID_COLORFX   (VIDEO_CID_BASE + 31)
	Selects a color effect.
#define	VIDEO_CID_AUTOBRIGHTNESS   (VIDEO_CID_BASE + 32)
#define	VIDEO_CID_BAND_STOP_FILTER   (VIDEO_CID_BASE + 33)
	Switch the band-stop filter of a camera sensor on or off, or specify its strength.
#define	VIDEO_CID_ALPHA_COMPONENT   (VIDEO_CID_BASE + 41)
	Sets the alpha color component.
#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 }
enum	video_colorfx {   VIDEO_COLORFX_NONE = 0 , VIDEO_COLORFX_BW = 1 , VIDEO_COLORFX_SEPIA = 2 , VIDEO_COLORFX_NEGATIVE = 3 ,   VIDEO_COLORFX_EMBOSS = 4 , VIDEO_COLORFX_SKETCH = 5 , VIDEO_COLORFX_SKY_BLUE = 6 , VIDEO_COLORFX_GRASS_GREEN = 7 ,   VIDEO_COLORFX_SKIN_WHITEN = 8 , VIDEO_COLORFX_VIVID = 9 , VIDEO_COLORFX_AQUA = 10 , VIDEO_COLORFX_ART_FREEZE = 11 ,   VIDEO_COLORFX_SILHOUETTE = 12 , VIDEO_COLORFX_SOLARIZATION = 13 , VIDEO_COLORFX_ANTIQUE = 14 }

Camera class controls IDs
#define	VIDEO_CID_CAMERA_CLASS_BASE   0x009a0900
#define	VIDEO_CID_EXPOSURE_AUTO   (VIDEO_CID_CAMERA_CLASS_BASE + 1)
	Enables automatic adjustments of the exposure time and/or iris aperture.
#define	VIDEO_CID_EXPOSURE_ABSOLUTE   (VIDEO_CID_CAMERA_CLASS_BASE + 2)
	Determines the exposure time of the camera sensor.
#define	VIDEO_CID_EXPOSURE_AUTO_PRIORITY   (VIDEO_CID_CAMERA_CLASS_BASE + 3)
	Whether the device may dynamically vary the frame rate under the effect of auto-exposure Applicable when VIDEO_CID_EXPOSURE_AUTO is set to VIDEO_EXPOSURE_AUTO or VIDEO_EXPOSURE_APERTURE_PRIORITY.
#define	VIDEO_CID_PAN_RELATIVE   (VIDEO_CID_CAMERA_CLASS_BASE + 4)
	This write-only control turns the camera horizontally by the specified amount.
#define	VIDEO_CID_TILT_RELATIVE   (VIDEO_CID_CAMERA_CLASS_BASE + 5)
	This write-only control turns the camera vertically by the specified amount.
#define	VIDEO_CID_PAN_ABSOLUTE   (VIDEO_CID_CAMERA_CLASS_BASE + 8)
	This control turns the camera horizontally to the specified position.
#define	VIDEO_CID_TILT_ABSOLUTE   (VIDEO_CID_CAMERA_CLASS_BASE + 9)
	This control turns the camera vertically to the specified position.
#define	VIDEO_CID_FOCUS_ABSOLUTE   (VIDEO_CID_CAMERA_CLASS_BASE + 10)
	This control sets the focal point of the camera to the specified position.
#define	VIDEO_CID_FOCUS_RELATIVE   (VIDEO_CID_CAMERA_CLASS_BASE + 11)
	This write-only control moves the focal point of the camera by the specified amount.
#define	VIDEO_CID_FOCUS_AUTO   (VIDEO_CID_CAMERA_CLASS_BASE + 12)
	Enables continuous automatic focus adjustments.
#define	VIDEO_CID_ZOOM_ABSOLUTE   (VIDEO_CID_CAMERA_CLASS_BASE + 13)
	Specify the objective lens focal length as an absolute value.
#define	VIDEO_CID_ZOOM_RELATIVE   (VIDEO_CID_CAMERA_CLASS_BASE + 14)
	This write-only control sets the objective lens focal length relatively to the current value.
#define	VIDEO_CID_ZOOM_CONTINUOUS   (VIDEO_CID_CAMERA_CLASS_BASE + 15)
	Start a continuous zoom movement.
#define	VIDEO_CID_IRIS_ABSOLUTE   (VIDEO_CID_CAMERA_CLASS_BASE + 17)
	This control sets the camera's aperture to the specified value.
#define	VIDEO_CID_IRIS_RELATIVE   (VIDEO_CID_CAMERA_CLASS_BASE + 18)
	This write-only control modifies the camera's aperture by the specified amount.
#define	VIDEO_CID_WIDE_DYNAMIC_RANGE   (VIDEO_CID_CAMERA_CLASS_BASE + 21)
	Enables or disables the camera's wide dynamic range feature.
#define	VIDEO_CID_PAN_SPEED   (VIDEO_CID_CAMERA_CLASS_BASE + 32)
	This control turns the camera horizontally at the specific speed.
#define	VIDEO_CID_TILT_SPEED   (VIDEO_CID_CAMERA_CLASS_BASE + 33)
	This control turns the camera vertically at the specified speed.
#define	VIDEO_CID_CAMERA_ORIENTATION   (VIDEO_CID_CAMERA_CLASS_BASE + 34)
	This read-only control describes the camera position on the device It by reports where the camera camera is installed, its mounting position on the device.
#define	VIDEO_CID_CAMERA_SENSOR_ROTATION   (VIDEO_CID_CAMERA_CLASS_BASE + 35)
	This read-only control describes the orientation of the sensor in the device.
enum	video_exposure_type { VIDEO_EXPOSURE_AUTO = 0 , VIDEO_EXPOSURE_MANUAL = 1 , VIDEO_EXPOSURE_SHUTTER_PRIORITY = 2 , VIDEO_EXPOSURE_APERTURE_PRIORITY = 3 }
enum	video_camera_orientation { VIDEO_CAMERA_ORIENTATION_FRONT = 0 , VIDEO_CAMERA_ORIENTATION_BACK = 1 , VIDEO_CAMERA_ORIENTATION_EXTERNAL = 2 }

Detailed Description

Public APIs for Video.