Defines all of the operations on IVIDDEC2FRONT objects. More...
#include <ividdec2.h>
Data Fields | |
IALG_Fxns | ialg |
XDAS_Int32(* | process )(IVIDDEC2FRONT_Handle handle, IVIDDEC2_InArgs *inArgs, XDM_Context *context, IVIDDEC2FRONT_OutArgs *outArgs) |
Basic video decoding call. | |
XDAS_Int32(* | control )(IVIDDEC2FRONT_Handle handle, IVIDDEC2_Cmd id, IVIDDEC2_DynamicParams *params, XDM_Context *context, IVIDDEC2FRONT_Status *status) |
Control behavior of an algorithm. |
Defines all of the operations on IVIDDEC2FRONT objects.
XDAIS algorithm interface.
XDAS_Int32(* IVIDDEC2FRONT_Fxns::process)(IVIDDEC2FRONT_Handle handle, IVIDDEC2_InArgs *inArgs, XDM_Context *context, IVIDDEC2FRONT_OutArgs *outArgs) |
Basic video decoding call.
[in] | handle | Handle to an algorithm instance. |
[in] | inArgs | Input arguments. This is a required parameter. |
[in,out] | context | Context provided to, and managed by the split codec. |
[out] | outArgs | Ouput results. This is a required parameter. |
context
includes input and output buffers, intermediate buffers, and other values used by the codec. See XDM_Context for more details.context->numInBufs
will indicate the total number of input buffers supplied for input frame, and conditionally, the encoders MB data buffer.context->outBufs
[context->numOutBufs - 1] is a buffer descriptor into which the algorithm will write MB data for each macro block. The size of the MB data buffer will vary based on the decoder type. H.264 may generate N264 bytes per MB, while Mpeg2 may generate NMP2 bytes. The exact size of the buffers should be obtained by calling the algorithm's control() method with XDM_GETBUFINFO.inArgs
must not be NULL, and must point to a valid IVIDDEC2_InArgs structure.outArgs
must not be NULL, and must point to a valid IVIDDEC2FRONT_OutArgs structure.context
must not be NULL, and must point to a valid XDM_Context structure.context->inBufs
[0].buf must not be NULL, and must point to a valid buffer of data that is at least context->inBufs
[0].bufSize bytes in length.context->outBufs
[0] must not be NULL, and must point to a valid buffer of data that is at least context->outBufs
[0].bufSize bytes in length.context->numInOutBufs
must be zero (0).context->inBufs
and context->outBufs
are physically contiguous and owned by the calling application.inArgs
.context->inBufs
, with the exception of context->inBufs
[].accessMask. That is, the data and buffers pointed to by these parameters must be treated as read-only.context->inBufs
[].accessMask and appropriately indicate the mode in which each of the buffers in context->inBufs
were read. For example, if the algorithm only read from context->inBufs
[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.context->inBufs
and context->outBufs
are not owned by the calling application.context->algContext
and context->intermediateBufs
[] are owned by the calling application, but must be provided - unmodified - to the next part in this split codec.IVIDDEC2_EOK | Success. |
IVIDDEC2_EFAIL | General failure. See IVIDDEC2_Status::extendedError for more detailed further error conditions. |
IVIDDEC2_EUNSUPPORTED | Request is unsupported. |
XDAS_Int32(* IVIDDEC2FRONT_Fxns::control)(IVIDDEC2FRONT_Handle handle, IVIDDEC2_Cmd id, IVIDDEC2_DynamicParams *params, XDM_Context *context, IVIDDEC2FRONT_Status *status) |
Control behavior of an algorithm.
[in] | handle | Handle to an algorithm instance. |
[in] | id | Command id. See XDM_CmdId. |
[in] | params | Dynamic parameters. This is a required parameter. |
[in,out] | context | Context provided to, and managed by the split codec. |
[out] | status | Output results. This is a required parameter. |
handle
must be a valid algorithm instance handle.params
must not be NULL, and must point to a valid IVIDDEC2_DynamicParams structure.status
must not be NULL, and must point to a valid IVIDDEC2FRONT_Status structure.status->data
field, it must be physically contiguous and owned by the calling application.params
. That is, the data pointed to by this parameter must be treated as read-only.status->data
field, it is owned by the calling application.context
may be NULL. The FRONT part of a codec may be capable of completely handling the control() command. The codec indicates this the application is sure the FRONT part of the codec can return and must point to a valid XDM_Context structure.IVIDDEC2_EOK | Success. |
IVIDDEC2_EFAIL | General failure. See IVIDDEC2_Status::extendedError for more detailed further error conditions. |
IVIDDEC2_EUNSUPPORTED | Request is unsupported. |