IVIDTRANSCODE_Fxns Struct Reference
[XDM IVIDTRANSCODE Video Transcoder Interface]

Defines all of the operations on IVIDTRANSCODE objects. More...

Collaboration diagram for IVIDTRANSCODE_Fxns:

Data Fields
IALG_Fxns	ialg
XDAS_Int32(*	process )(IVIDTRANSCODE_Handle handle, XDM1_BufDesc inBufs, XDM_BufDesc outBufs, IVIDTRANSCODE_InArgs inArgs, IVIDTRANSCODE_OutArgs outArgs)
	Basic video decoding call.
XDAS_Int32(*	control )(IVIDTRANSCODE_Handle handle, IVIDTRANSCODE_Cmd id, IVIDTRANSCODE_DynamicParams params, IVIDTRANSCODE_Status status)
	Control behavior of an algorithm.

Detailed Description

Defines all of the operations on IVIDTRANSCODE objects.

XDAIS algorithm interface.

Basic video decoding call.

Parameters:

`[in]`	handle	Handle to an algorithm instance.
`[in,out]`	inBufs	Input buffer descriptors.
`[in,out]`	outBufs	Output buffer descriptors. The algorithm may modify the output buffer pointers.
`[in]`	inArgs	Input arguments. This is a required parameter.
`[out]`	outArgs	Ouput results. This is a required parameter.

Remarks:: process() is a blocking call. When process() returns, the algorithm's processing is complete.

Precondition:: inArgs must not be NULL, and must point to a valid IVIDTRANSCODE_InArgs structure.; outArgs must not be NULL, and must point to a valid IVIDTRANSCODE_OutArgs structure.; inBufs must not be NULL, and must point to a valid XDM1_BufDesc structure.; inBufs->descs[0].buf must not be NULL, and must point to a valid buffer of data that is at least inBufs->descs[0].bufSize bytes in length.; outBufs must not be NULL, and must point to a valid XDM_BufDesc structure.; outBufs->buf[0] must not be NULL, and must point to a valid buffer of data that is at least outBufs->bufSizes[0] bytes in length.; The buffers in inBuf and outBuf are physically contiguous and owned by the calling application.

Postcondition:: The algorithm must not modify the contents of inArgs.; The algorithm must not modify the contents of inBufs, with the exception of inBufs.bufDesc[].accessMask. That is, the data and buffers pointed to by these parameters must be treated as read-only.; The algorithm must modify the contents of inBufs->descs[].accessMask and appropriately indicate the mode in which each of the buffers in inBufs were read. For example, if the algorithm only read from inBufs.descs[0].buf using the algorithm processor, it could utilize XDM_SETACCESSMODE_READ to update the appropriate accessMask fields. The application may utilize these returned values to appropriately manage cache.; The buffers in inBufs are owned by the calling application.

Return values:

	IVIDTRANSCODE_EOK	Success.
	IVIDTRANSCODE_EFAIL	General failure. See IVIDTRANSCODE_Status::extendedError for more detailed further error conditions.
	IVIDTRANSCODE_EUNSUPPORTED	Request is unsupported.

Control behavior of an algorithm.

Parameters:

`[in]`	handle	Handle to an algorithm instance.
`[in]`	id	Command id. See XDM_CmdId.
`[in]`	params	Dynamic parameters. This is a required parameter.
`[out]`	status	Output results. This is a required parameter.

Precondition:: handle must be a valid algorithm instance handle.; params must not be NULL, and must point to a valid IVIDTRANSCODE_DynamicParams structure.; status must not be NULL, and must point to a valid IVIDTRANSCODE_Status structure.; If a buffer is provided in the status->data field, it must be physically contiguous and owned by the calling application.

Postcondition:: The algorithm must not modify the contents of params. That is, the data pointed to by this parameter must be treated as read-only.; If a buffer was provided in the status->data field, it is owned by the calling application.

Return values:

	IVIDTRANSCODE_EOK	Success.
	IVIDTRANSCODE_EFAIL	General failure. See IVIDTRANSCODE_Status::extendedError for more detailed further error conditions.
	IVIDTRANSCODE_EUNSUPPORTED	Request is unsupported.

The documentation for this struct was generated from the following file: