OMX_IMAGE_PARAM_QUANTIZATIONTABLETYPE Struct Reference
[OpenMAX IL Imaging Domain]

#include <OMX_Image.h>


Data Fields

OMX_U32 nSize
OMX_VERSIONTYPE nVersion
OMX_U32 nPortIndex
OMX_IMAGE_QUANTIZATIONTABLETYPE eQuantizationTable
OMX_U8 nQuantizationMatrix [64]


Detailed Description

JPEG quantization tables are used to determine DCT compression for YUV data, as an alternative to specifying Q factor, providing exact control of compression

STRUCT MEMBERS: nSize : Size of the structure in bytes nVersion : OMX specification version information nPortIndex : Port that this structure applies to eQuantizationTable : Quantization table type nQuantizationMatrix[64] : JPEG quantization table of coefficients stored in increasing columns then by rows of data (i.e. row 1, ... row 8). Quantization values are in the range 0-255 and stored in linear order (i.e. the component will zig-zag the quantization table data if required internally)

Definition at line 267 of file OMX_Image.h.


Field Documentation

OMX_U32 OMX_IMAGE_PARAM_QUANTIZATIONTABLETYPE::nSize

Definition at line 268 of file OMX_Image.h.

OMX_VERSIONTYPE OMX_IMAGE_PARAM_QUANTIZATIONTABLETYPE::nVersion

Definition at line 269 of file OMX_Image.h.

OMX_U32 OMX_IMAGE_PARAM_QUANTIZATIONTABLETYPE::nPortIndex

Definition at line 270 of file OMX_Image.h.

OMX_IMAGE_QUANTIZATIONTABLETYPE OMX_IMAGE_PARAM_QUANTIZATIONTABLETYPE::eQuantizationTable

Definition at line 271 of file OMX_Image.h.

OMX_U8 OMX_IMAGE_PARAM_QUANTIZATIONTABLETYPE::nQuantizationMatrix[64]

Definition at line 272 of file OMX_Image.h.


The documentation for this struct was generated from the following file:
Generated for OpenMAX Bellagio rel. 0.9.0 by  doxygen 1.5.1
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