IStreamEnum

Interface for collecting information about data stream modules. More...

Typedefs
typedef void *	CVDSTREAM
	Handle to logical data stream object. More...

Functions
cvbbool_t	CVDCanStreamEnum (DEVOBJ DeviceObject)
	This function verifies if the handle implements IStreamEnum. More...
cvbres_t	CVDDeviceGetStreamAt (DEVOBJ DeviceObject, size_t Index, CVDSTREAM &Stream)
	Returns the handle of the specified data stream module. More...
cvbres_t	CVDDeviceGetStreamCount (DEVOBJ DeviceObject, size_t &Count)
	Returns the number of data stream modules that the target data streaming device holds. More...

Detailed Description

Interface for collecting information about data stream modules.

This is a collection of features that aim to provide information about the data stream module. The information is required when a data stream module needs to be controlled.

See also

IAcquisitionEngine IStreamControl

Typedef Documentation

CVDSTREAM

CVDSTREAM

Handle to logical data stream object.

The CVDSTREAM is a reference counted handle. It provides several interfaces for acquisition.

• IFlowSetInfo
• IFlowSetPoolOwner
• IAcquisitionEngine
• IStreamControl
• INodeMapHandle2

See also

• CVDDeviceGetStreamAt

Function Documentation

CVDCanStreamEnum()

cvbbool_t CVDCanStreamEnum

(

DEVOBJ

DeviceObject

)

This function verifies if the handle implements IStreamEnum.

Parameters

[in]

DeviceObject

Handle to be examined.

Returns

TRUE if the handle implements IStreamEnum, FALSE otherwise.

Supported platforms:

Win32
Win64
Linux

CVDDeviceGetStreamAt()

cvbres_t CVDDeviceGetStreamAt	(	DEVOBJ	DeviceObject,
		size_t	Index,
		CVDSTREAM &	Stream
	)

Returns the handle of the specified data stream module.

Parameters

[in]	DeviceObject	The handle of a target data streaming device.
[in]	Index	The index of a target data stream module; the handle of the specified data stream module will be retured through Stream.
[out]	Stream	The handle of a target data stream module that is specified ny Index.

Returns

• #CVC_ERROR (#CVC_E_OK) if the execution was successful.

CVDDeviceGetStreamCount()

cvbres_t CVDDeviceGetStreamCount	(	DEVOBJ	DeviceObject,
		size_t &	Count
	)

Returns the number of data stream modules that the target data streaming device holds.

Parameters

[in]	DeviceObject	The handle of a target data streaming device.
[out]	Count	The number of data stream modules that the target data streaming device holds.

Returns

• #CVC_ERROR (#CVC_E_OK) if the execution was successful.