Linux Standard Base Desktop Specification 3.2
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jpeg_quality_scaling

Name

jpeg_quality_scaling -- convert quality scaling to percentage scaling factor

Synopsis

#include <jpeglib.h>

int jpeg_quality_scaling(int quality);

Description

The function jpeg_quality_scaling() shall convert a user-specified quality rating to a percentage scaling factor for an underlying quantization table, using IJG-recommended scaling curve. The input "quality" factor ranges from 0 to 100.

Return Value

jpeg_quality_scaling() shall return the integer value of quality as a percentage.

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