Texas Instruments H.264 High Profile Encoder, User Manual

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4-41
4.2.1.10 IVIDENC2_Status
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Description
This structure defines parameters that describe the status of an algorithm instance object.
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Fields
Field Data Type Input/
Output Description
size XDAS_Int32
Input Size of the basic or extended (if being used)
data structure in bytes.
extendedError XDAS_Int32
Output Extended error code.
See
XDM_ErrorBit
enumeration in Table
4-1 for details.
data XDM1_SingleBuf
Desc
Output Buffer descriptor for data passing
If this field is not used, the application must
set
data.buf
to NULL.
This buffer can be used as either input or
output, depending on the command.
The buffer will be provided by the
application, and returned to the application
on return of the
IVIDENC1_Fxns.control()
call. The algorithm must not retain a pointer
to this data.
encodingPreset XDAS_Int32
Output Encoding preset.
See
XDM_EncodingPreset
enumeration
in Table 4-1 or details.
rateControlPreset XDAS_Int32
Output Rate control preset.
See
IVIDEO_RateControlPreset
enumeration in Table 4-1 for details.
maxInterFrameInte
rval XDAS_Int32
Output This is used for setting the maximum
number of B frames between two reference
frames.
Distance from I-frame to P-frame:
1 - No B-frames
2 - Insert one B-frame. Not supported in
this version of H264 Encoder
N - Insert N-1 B frames between two P
frames
inputChromaFormat XDAS_Int32
Output Chroma format for the input buffer.
See
XDM_ChromaFormat
enumeration in
Table 4-1 for details.
inputContentType XDAS_Int32
Output Video content type of the buffer being
encoded.
See
IVIDEO_ContentType
enumeration
in Table 4-1 for details.