Image Sensor Control (ISC)

Detailed Description

The Image Sensor Control API encompasses all NvMedia I2C control related functions, including programming of all I2C controlled components such as deserializers, serializers, EEPROMs, and image sensors.

NvMediaISC needs a device driver for each attached device. This provides the flexibility of adding new devices easily.

Data Structures
struct	NvMediaISCDevice
	Holds the handle for an NvMediaISCDevice object. More...
struct	NvMediaISCModuleConfig
	Holds the ISC Module ISP configuration. More...
struct	NvMediaISCExposureControl
	Holds exposure control information. More...
struct	NvMediaISCWBGainControl
	Holds the white balance control structure. More...
struct	NvMediaISCEmbeddedDataBuffer
	Holds the embedded data buffer structure. More...
struct	NvMediaISCEmbeddedData
	Holds the embedded data structure. More...

Modules
	Basic ISC Types
	The Image Sensor Control API provides common ISC processing functions.
	ISC Device
	An ISC device represents a device that is attached or linked to the root I2C port.
	ISC Device Driver
	Program elements related to NvMediaISCDeviceDriver, which defines a device driver.
	ISC Root Device
	Manage NvMediaISCRootDevice objects, which represent the root of the Nvmedia ISC object system.
	ISC Version Information
	Provides version information for the NvMedia ISC library.

Typedefs
typedef struct NvMediaISCModuleConfig	NvMediaISCModuleConfig
	Holds the ISC Module ISP configuration. More...
typedef struct NvMediaISCExposureControl	NvMediaISCExposureControl
	Holds exposure control information. More...
typedef struct NvMediaISCWBGainControl	NvMediaISCWBGainControl
	Holds the white balance control structure. More...
typedef struct NvMediaISCEmbeddedData	NvMediaISCEmbeddedData
	Holds the embedded data structure. More...

Enumerations
enum	NvMediaISCPowerItems {   NVMEDIA_ISC_PWR_AGGREGATOR,   NVMEDIA_ISC_PWR_LINK_0,   NVMEDIA_ISC_PWR_LINK_1,   NVMEDIA_ISC_PWR_LINK_2,   NVMEDIA_ISC_PWR_LINK_3 }
	ISC Power control items. More...
enum	NvMediaISCExposureMode {   NVMEDIA_ISC_EXPOSURE_MODE_LONG,   NVMEDIA_ISC_EXPOSURE_MODE_SHORT,   NVMEDIA_ISC_EXPOSURE_MODE_VERY_SHORT,   NVMEDIA_ISC_EXPOSURE_MODE_MAX }
	Defines Exposure mode. More...
enum	NvMediaISCSensorAttrType {   NVMEDIA_ISC_SENSOR_ATTR_FUSE_ID,   NVMEDIA_ISC_SENSOR_ATTR_GAIN_MIN,   NVMEDIA_ISC_SENSOR_ATTR_GAIN_MAX,   NVMEDIA_ISC_SENSOR_ATTR_ET_MIN,   NVMEDIA_ISC_SENSOR_ATTR_ET_MAX,   NVMEDIA_ISC_SENSOR_ATTR_ET_FINE,   NVMEDIA_ISC_SENSOR_ATTR_ET_STEP,   NVMEDIA_ISC_SENSOR_ATTR_HDR_MAX,   NVMEDIA_ISC_SENSOR_ATTR_GAIN_FACTOR,   NVMEDIA_ISC_SENSOR_ATTR_QE_PIXEL_RATIO,   NVMEDIA_ISC_SENSOR_ATTR_FRAME_RATE,   NVMEDIA_ISC_SENSOR_ATTR_NUM_EXPOSURES }
	ISC sensor attributes. More...

Functions
NvMediaStatus	NvMediaISCRootDevicePowerControl (NvMediaISCRootDevice *device, NvMediaISCPowerItems powerItem, NvMediaBool powerOn)
	Turns ON/OFF the power of a specific sub-device. More...
NvMediaStatus	NvMediaISCRootDeviceGetPowerStatus (NvMediaISCRootDevice *device, NvMediaISCPowerItems powerItem, NvMediaBool *powerStatus)
	Gets the power ON/OFF status of a specific sub-device. More...
NvMediaStatus	NvMediaISCRootDeviceEnableSync (NvMediaISCRootDevice *device, NvMediaBool enable)
	Enables or disables pulse width modulation (PWM) for the external synchronization. More...
NvMediaStatus	NvMediaISCRootDeviceSetSyncConfig (NvMediaISCRootDevice *device, float_t freq, float_t dutyRatio)
	Sets the pulse width modulation (PWM) frequency and duty. More...
NvMediaStatus	NvMediaISCRootDeviceGetSyncConfig (NvMediaISCRootDevice *device, float_t *freq, float_t *dutyRatio)
	Gets the pulse width modulation (PWM) frequency and duty. More...
NvMediaStatus	NvMediaISCSetSensorCharMode (NvMediaISCDevice *device, uint8_t expNo)
	Set sensor in characterization mode. More...
NvMediaStatus	NvMediaISCGetModuleConfig (NvMediaISCDevice *device, NvMediaISCModuleConfig *moduleConfig)
	Gets the Module ISP configuration. More...

Typedef Documentation

typedef struct NvMediaISCEmbeddedData NvMediaISCEmbeddedData

Holds the embedded data structure.

Deprecated:

Use the new structure NvMediaISCEmbeddedDataInfo instead.

typedef struct NvMediaISCExposureControl NvMediaISCExposureControl

Holds exposure control information.

Deprecated:

Use NvMediaISCSensorControl instead.

typedef struct NvMediaISCModuleConfig NvMediaISCModuleConfig

Holds the ISC Module ISP configuration.

typedef struct NvMediaISCWBGainControl NvMediaISCWBGainControl

Holds the white balance control structure.

Deprecated:

Use NvMediaISCSensorControl instead.

Enumeration Type Documentation

enum NvMediaISCExposureMode

Defines Exposure mode.

Deprecated:

Use the NvMediaISCSetSensorCharMode() parameter expNo instead.

Enumerator
NVMEDIA_ISC_EXPOSURE_MODE_LONG	Specifies long exposure mode.
NVMEDIA_ISC_EXPOSURE_MODE_SHORT	Specifies short exposure mode.
NVMEDIA_ISC_EXPOSURE_MODE_VERY_SHORT	Specifies very short exposure mode.
NVMEDIA_ISC_EXPOSURE_MODE_MAX	Specifies the exposure mode count.

Definition at line 1496 of file nvmedia_isc.h.

enum NvMediaISCPowerItems

ISC Power control items.

Enumerator
NVMEDIA_ISC_PWR_AGGREGATOR	Aggregator Power.
NVMEDIA_ISC_PWR_LINK_0	LINK 0 Power.
NVMEDIA_ISC_PWR_LINK_1	LINK 1 PWR.
NVMEDIA_ISC_PWR_LINK_2	LINK 2 PWR.
NVMEDIA_ISC_PWR_LINK_3	LINK 3 PWR.

Definition at line 1363 of file nvmedia_isc.h.

enum NvMediaISCSensorAttrType

ISC sensor attributes.

Note

This enum will not be supported in future release. It is recommended to use the new API NvMediaISCGetSensorAttributes

Enumerator
NVMEDIA_ISC_SENSOR_ATTR_FUSE_ID	Specifies a unique ID per instance of camera module. Data type: char[32]
NVMEDIA_ISC_SENSOR_ATTR_GAIN_MIN	Specifies minimum possible gain values. Data type: float_t[NVMEDIA_ISC_EXPOSURE_MODE_MAX]
NVMEDIA_ISC_SENSOR_ATTR_GAIN_MAX	Specifies maximum possible gain values. Data type: float_t[NVMEDIA_ISC_EXPOSURE_MODE_MAX]
NVMEDIA_ISC_SENSOR_ATTR_ET_MIN	Specifies minimum possible exposure time values in seconds. Data type: float_t[NVMEDIA_ISC_EXPOSURE_MODE_MAX]
NVMEDIA_ISC_SENSOR_ATTR_ET_MAX	Specifies maximum possible exposure time values in seconds. Data type: float_t[NVMEDIA_ISC_EXPOSURE_MODE_MAX]
NVMEDIA_ISC_SENSOR_ATTR_ET_FINE	Specifies fine integration time values in seconds. Data type: float_t[NVMEDIA_ISC_EXPOSURE_MODE_MAX]
NVMEDIA_ISC_SENSOR_ATTR_ET_STEP	Specifies exposure time step values in seconds. Data type: double[NVMEDIA_ISC_EXPOSURE_MODE_MAX]
NVMEDIA_ISC_SENSOR_ATTR_HDR_MAX	Specifies maximum possible HDR ratio value. Data type: uint32_t
NVMEDIA_ISC_SENSOR_ATTR_GAIN_FACTOR	Specifies gain factor between the exposures. If non zero, possible factors are 1, x, 1/x. Data type: float_t
NVMEDIA_ISC_SENSOR_ATTR_QE_PIXEL_RATIO	Specifies sensitivity ratios for different exposures. The ratios are normalized to the maximum sensitivity, so that all ratios are in the range [0.0, 1.0]. Data type: float_t[NVMEDIA_ISC_EXPOSURE_MODE_MAX]
NVMEDIA_ISC_SENSOR_ATTR_FRAME_RATE	Specifies frames per second. Data type: float_t
NVMEDIA_ISC_SENSOR_ATTR_NUM_EXPOSURES	Specifies active number of exposures. Data type: uint32_t

Definition at line 1574 of file nvmedia_isc.h.

Function Documentation

NvMediaStatus NvMediaISCGetModuleConfig	(	NvMediaISCDevice *	device,
		NvMediaISCModuleConfig *	moduleConfig
	)

Gets the Module ISP configuration.

Parameters

[in]	device	A pointer to the device to use.
[out]	moduleConfig	A pointer to the module ISP configuration.

Returns

NvMediaStatus The completion status of the operation. Possible values are:

• NVMEDIA_STATUS_OK
• NVMEDIA_STATUS_BAD_PARAMETER if any of the input parameter is NULL.
• NVMEDIA_STATUS_NOT_SUPPORTED if the functionality is not supported by the device driver.
• NVMEDIA_STATUS_ERROR if any other error occurred.

NvMediaStatus NvMediaISCRootDeviceEnableSync	(	NvMediaISCRootDevice *	device,
		NvMediaBool	enable
	)

Enables or disables pulse width modulation (PWM) for the external synchronization.

Parameters

[in]	device	The root device to use.
[in]	enable	The PWM state. Possible values are: NVMEDIA_TRUE PWM is enabled. NVMEDIA_FALSE PWM is disabled.

Returns

NvMediaStatus The completion status of the operation. Possible values are:
NVMEDIA_STATUS_OK
NVMEDIA_STATUS_BAD_PARAMETER if any of the input parameter is NULL.
NVMEDIA_STATUS_ERROR if other error occurred.

NvMediaStatus NvMediaISCRootDeviceGetPowerStatus	(	NvMediaISCRootDevice *	device,
		NvMediaISCPowerItems	powerItem,
		NvMediaBool *	powerStatus
	)

Gets the power ON/OFF status of a specific sub-device.

Parameters

[in]	device	The root device to use.
[in]	powerItem	The power item to get power status in the root device.
[in]	powerStatus	The power state of the power item provided Possible values are: NVMEDIA_TRUE power is on NVMEDIA_FALSE power is off

Returns

NvMediaStatus The completion status of the operation. Possible values are:
NVMEDIA_STATUS_OK
NVMEDIA_STATUS_BAD_PARAMETER if any of the input parameter is NULL.
NVMEDIA_STATUS_NOT_SUPPORTED if the functionality is not supported by the device driver.
NVMEDIA_STATUS_ERROR if any other error occurred.

NvMediaStatus NvMediaISCRootDeviceGetSyncConfig	(	NvMediaISCRootDevice *	device,
		float_t *	freq,
		float_t *	dutyRatio
	)

Gets the pulse width modulation (PWM) frequency and duty.

Parameters

[in]	device	The root device to use.
[out]	freq	PWM frequency.
[out]	dutyRatio	High level ratio in one PWM period.

Returns

NvMediaStatus The completion status of the operation. Possible values are:
NVMEDIA_STATUS_OK
NVMEDIA_STATUS_BAD_PARAMETER if any of the input parameter is NULL.
NVMEDIA_STATUS_NOT_SUPPORTED if the functionality is not supported.
NVMEDIA_STATUS_ERROR if other error occurred.

NvMediaStatus NvMediaISCRootDevicePowerControl	(	NvMediaISCRootDevice *	device,
		NvMediaISCPowerItems	powerItem,
		NvMediaBool	powerOn
	)

Turns ON/OFF the power of a specific sub-device.

Parameters

[in]	device	The root device to use.
[in]	powerItem	The power item to control the power in the root device.
[in]	powerOn	The power state after this call. Possible values are: NVMEDIA_TRUE turn power on NVMEDIA_FALSE turn power off

Returns

NvMediaStatus The completion status of the operation. Possible values are:

• NVMEDIA_STATUS_OK if successful.
• NVMEDIA_STATUS_BAD_PARAMETER if an input parameter is NULL.
• NVMEDIA_STATUS_NOT_SUPPORTED if the functionality is not supported by the device driver.
• NVMEDIA_STATUS_ERROR if some other error occurred.

NvMediaStatus NvMediaISCRootDeviceSetSyncConfig	(	NvMediaISCRootDevice *	device,
		float_t	freq,
		float_t	dutyRatio
	)

Sets the pulse width modulation (PWM) frequency and duty.

Parameters

[in]	device	The root device to use.
[in]	freq	PWM frequency.
[in]	dutyRatio	High level ratio in one PWM period.

Returns

NvMediaStatus The completion status of the operation. Possible values are:
NVMEDIA_STATUS_OK
NVMEDIA_STATUS_BAD_PARAMETER if any of the input parameter is NULL.
NVMEDIA_STATUS_ERROR if other error occurred.

NvMediaStatus NvMediaISCSetSensorCharMode	(	NvMediaISCDevice *	device,
		uint8_t	expNo
	)

Set sensor in characterization mode.

Description

NvMediaISCSetSensorCharMode API provides ability for the user to configure the sensor for characterization. Sensor characterization provides optimal parameters, corresponding to sensor physical and functional characteristics, for image processing.
Sensor characterization for High Dynamic Range (HDR) sensors with multiple exposures (T1, T2, … , Tn ) involves characterizing induvial exposures separately, if required by the sensor. This API provides the ability to configure sensor to capture each exposure separately, if required by sensor characterization. This function re-configures the sensor i.e. changes the sensor static attributes like numActiveExposures, sensorExpRange, sensorGainRange and hence, should be called during sensor initialization time. In order to characterize the sensor exposure number ‘n’, where n = {1,2,3, … , N} for N-exposure HDR sensor, the input parameter ‘expNo’ should be set to ‘n’.
For a non-HDR sensor, the input parameter ‘expNo’ should always be set to ‘1’.

Parameters

[in]	device	A pointer to the sensor control device in use.
[in]	expNo	Sensor exposure number to be used for characterization. Valid range for expNo : [0, (NVMEDIA_ISC_MAX_EXPOSURES-1)] For Non-HDR sensor, this should be set to '1'

Returns

NvMediaStatus The completion status of the operation. Possible values are:

• NVMEDIA_STATUS_OK if successful.
• NVMEDIA_STATUS_BAD_PARAMETER if an input parameter is NULL or invalid.
• NVMEDIA_STATUS_NOT_SUPPORTED if the functionality is not supported by the device driver.
• NVMEDIA_STATUS_ERROR if some other error occurred.