BitMiracle.LibJpeg.Classic.jpeg_compress_struct.jpeg_set_linear_quality C# (CSharp) Method

jpeg_compress_struct Class Documentation Show file Open project: prepare/HTML-Renderer

jpeg_set_linear_quality() public method

Same as jpeg_set_quality except that the generated tables are the sample tables given in the JPEG specification section K.1, multiplied by the specified scale factor.

Note that larger scale factors give lower quality. This entry point is useful for conforming to the Adobe PostScript DCT conventions, but we do not recommend linear scaling as a user-visible quality scale otherwise.

public jpeg_set_linear_quality ( int scale_factor, bool force_baseline ) : void
scale_factor	int	The scale_factor.
force_baseline	bool	If true, then the quantization table entries are /// constrained to the range 1..255 for full JPEG baseline compatibility. In the current /// implementation, this only makes a difference for quality settings below 25, and it /// effectively prevents very small/low quality files from being generated. The IJG decoder /// is capable of reading the non-baseline files generated at low quality settings when /// force_baseline is false, but other decoders may not be.
return	void

        public void jpeg_set_linear_quality(int scale_factor, bool force_baseline)
        {
            /* Set up two quantization tables using the specified scaling */
            jpeg_add_quant_table(0, std_luminance_quant_tbl, scale_factor, force_baseline);
            jpeg_add_quant_table(1, std_chrominance_quant_tbl, scale_factor, force_baseline);
        }

jpeg_compress_struct

add_huff_table

fill_a_scan

fill_dc_scans

fill_scans

initial_setup

initialize

jinit_c_main_controller

jinit_c_master_control

jinit_compress_master

jpeg_abort_compress

jpeg_add_quant_table