Quantization Functions

This section describes Intel IPP functions that perform quantization, dequantization and preparation of quantization tables and are specific for JPEG codec. These functions are listed in Table “Quantization Functions”.

Quantization Functions
Function Base Name	Description
QuantFwdRawTableInit_JPEG	Modifies raw quantization tables in accordance with quality factor.
QuantFwdTableInit_JPEG	Prepares quantization tables in a format suitable for an encoder.
QuantFwd8x8_JPEG	Performs quantization of an 8x8 block of DCT coefficients.
QuantInvTableInit_JPEG	Prepares quantization tables in a format suitable for a decoder.
QuantFwd8x8_JPEG	Performs dequantization of DCT coefficients in 8x8 block

QuantFwdRawTableInit_JPEG
Modifies raw quantization tables in accordance with the quality factor.
QuantFwdTableInit_JPEG
Prepares quantization tables suitable for fast encoding.
QuantFwd8x8_JPEG
Performs quantization of an 8x8 block of DCT coefficients.
QuantInvTableInit_JPEG
Prepares quantization tables suitable for fast decoding.
QuantInv8x8_JPEG
Performs dequantization of an 8x8 block of DCT coefficients

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