Texas Instruments DM365, User Manual

Page: 88 / 131

API Reference
4-42
Field Data type Input/
Output Description
rcQMax XDAS_Int32 Input Maximum value of Quantization Parameter (QP) to
be used while encoding. Valid value is 0 to 51. The
value for
rcQMax should not be less than rcQMin .
The parameter is applicable only when rate-control
is enabled.
Default value = 45
rcQMin XDAS_Int32 Input Minimum value of Quantization Parameter (QP) to
be used while encoding. Valid value is 0 to 51. The
value for
rcQMin
should not be greater than
rcQMax
. The parameter is applicable only when
rate-control is enabled.
Default value = 0.
rcQMaxI XDAS_Int32
Input Maximum value of Quantization Parameter (QP) to
be used while encoding Intra Frame. Valid value is 0
to 51. The value for
rcQMaxI
should not be less
than
rcQMinI
. The parameter is applicable only
when rate-control is enabled.
Default value = 42
rcQMinI XDAS_Int32 Input Minimum value of Quantization Parameter (QP) to
be used while encoding Intra Frame. Valid value is 0
to 51. The value for
rcQMinI
should not be
greater than
rcQMaxI
. The parameter is applicable
only when rate-control is enabled.
Default value = 0.
airRate XDAS_Int32
Input Parameter for forced Intra MB insertion in P-frames.
‰
0 – No forced Intra MBs
‰
n > 0 – number of forced Intra MB in each
frame.
Default value = 0.
This feature is not supported for interlaced content.
sliceSize XDAS_Int32
Input The interpretation of sliceSize depends on
sliceMode value.
See the note at end of 4.2.2.2 for details on
sliceSize
range and interpretation.
lfDisableIdc XDAS_Int32 Input Option to enable or disable loop filter
‰
0 – Loop Filter Enable
‰
1 – Loop Filter Disable
‰
2 – Disable Filter across slice boundaries
Default value = 0
rcAlgo XDAS_Int32 Input Option to specify the type of Rate Control Algorithm
‰
0 – CBR
‰
1 – VBR
‰
2 – Fixed QP
CBR Rate Control algorithm is not supported for
interlaced encoding and will be automatically
disabled by encoder.
Default value = 1