Referencia del Archivo src/qt/src/3rdparty/libjpeg/jcparam.c

#include "jinclude.h"
#include "jpeglib.h"

'defines'
#define	JPEG_INTERNALS
#define	SET_COMP(index, id, hsamp, vsamp, quant, dctbl, actbl)
Funciones
	jpeg_add_quant_table (j_compress_ptr cinfo, int which_tbl, const unsigned int *basic_table, int scale_factor, boolean force_baseline)
	jpeg_set_linear_quality (j_compress_ptr cinfo, int scale_factor, boolean force_baseline)
	jpeg_quality_scaling (int quality)
	jpeg_set_quality (j_compress_ptr cinfo, int quality, boolean force_baseline)
	add_huff_table (j_compress_ptr cinfo, JHUFF_TBL **htblptr, const UINT8 *bits, const UINT8 *val)
	std_huff_tables (j_compress_ptr cinfo)
	jpeg_set_defaults (j_compress_ptr cinfo)
	jpeg_default_colorspace (j_compress_ptr cinfo)
	jpeg_set_colorspace (j_compress_ptr cinfo, J_COLOR_SPACE colorspace)
	fill_a_scan (jpeg_scan_info *scanptr, int ci, int Ss, int Se, int Ah, int Al)
	fill_scans (jpeg_scan_info *scanptr, int ncomps, int Ss, int Se, int Ah, int Al)
	fill_dc_scans (jpeg_scan_info *scanptr, int ncomps, int Ah, int Al)
	jpeg_simple_progression (j_compress_ptr cinfo)

---

Documentación de los 'defines'

#define JPEG_INTERNALS

#define SET_COMP	(		index,
			id,
			hsamp,
			vsamp,
			quant,
			dctbl,
			actbl
	)

Valor:

(compptr = &cinfo->comp_info[index], \
   compptr->component_id = (id), \
   compptr->h_samp_factor = (hsamp), \
   compptr->v_samp_factor = (vsamp), \
   compptr->quant_tbl_no = (quant), \
   compptr->dc_tbl_no = (dctbl), \
   compptr->ac_tbl_no = (actbl) )

---

Documentación de las funciones

add_huff_table	(	j_compress_ptr	cinfo,
		JHUFF_TBL **	htblptr,
		const UINT8 *	bits,
		const UINT8 *	val
	)

fill_a_scan	(	jpeg_scan_info *	scanptr,
		int	ci,
		int	Ss,
		int	Se,
		int	Ah,
		int	Al
	)

fill_dc_scans	(	jpeg_scan_info *	scanptr,
		int	ncomps,
		int	Ah,
		int	Al
	)

fill_scans	(	jpeg_scan_info *	scanptr,
		int	ncomps,
		int	Ss,
		int	Se,
		int	Ah,
		int	Al
	)

jpeg_add_quant_table	(	j_compress_ptr	cinfo,
		int	which_tbl,
		const unsigned int *	basic_table,
		int	scale_factor,
		boolean	force_baseline
	)

jpeg_default_colorspace

(

j_compress_ptr

cinfo

)

jpeg_quality_scaling

(

int

quality

)

jpeg_set_colorspace	(	j_compress_ptr	cinfo,
		J_COLOR_SPACE	colorspace
	)

jpeg_set_defaults

(

j_compress_ptr

cinfo

)

jpeg_set_linear_quality	(	j_compress_ptr	cinfo,
		int	scale_factor,
		boolean	force_baseline
	)

jpeg_set_quality	(	j_compress_ptr	cinfo,
		int	quality,
		boolean	force_baseline
	)

jpeg_simple_progression

(

j_compress_ptr

cinfo

)

std_huff_tables

(

j_compress_ptr

cinfo

)