Public Attributes

OMX_IMAGE_PARAM_QUANTIZATIONTABLETYPE Struct Reference
[OpenMAX IL Imaging Domain]

#include <OMX_Image.h>

List of all members.

Public Attributes

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)


Member Data Documentation

OMX_U32 nPortIndex
OMX_U8 nQuantizationMatrix[64]
OMX_U32 nSize
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