jidctint.c File Reference

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

Include dependency graph for jidctint.c:

Go to the source code of this file.

Defines
#define	JPEG_INTERNALS
#define	CONST_BITS   13
#define	PASS1_BITS   2
#define	FIX_0_298631336   FIX(0.298631336)
#define	FIX_0_390180644   FIX(0.390180644)
#define	FIX_0_541196100   FIX(0.541196100)
#define	FIX_0_765366865   FIX(0.765366865)
#define	FIX_0_899976223   FIX(0.899976223)
#define	FIX_1_175875602   FIX(1.175875602)
#define	FIX_1_501321110   FIX(1.501321110)
#define	FIX_1_847759065   FIX(1.847759065)
#define	FIX_1_961570560   FIX(1.961570560)
#define	FIX_2_053119869   FIX(2.053119869)
#define	FIX_2_562915447   FIX(2.562915447)
#define	FIX_3_072711026   FIX(3.072711026)
#define	MULTIPLY(var, const)   MULTIPLY16C16(var,const)
#define	DEQUANTIZE(coef, quantval)   (((ISLOW_MULT_TYPE) (coef)) * (quantval))
Functions
	jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info *compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)

---

Define Documentation

#define CONST_BITS   13

Definition at line 78 of file jidctint.c.

Referenced by jpeg_idct_islow().

#define DEQUANTIZE	(		coef,
			quantval
	)		(((ISLOW_MULT_TYPE) (coef)) * (quantval))

Definition at line 140 of file jidctint.c.

Referenced by jpeg_idct_islow().

#define FIX_0_298631336   FIX(0.298631336)

Definition at line 106 of file jidctint.c.

Referenced by jpeg_idct_islow().

#define FIX_0_390180644   FIX(0.390180644)

Definition at line 107 of file jidctint.c.

Referenced by jpeg_idct_islow().

#define FIX_0_541196100   FIX(0.541196100)

Definition at line 108 of file jidctint.c.

Referenced by jpeg_idct_islow().

#define FIX_0_765366865   FIX(0.765366865)

Definition at line 109 of file jidctint.c.

Referenced by jpeg_idct_islow().

#define FIX_0_899976223   FIX(0.899976223)

Definition at line 110 of file jidctint.c.

Referenced by jpeg_idct_islow().

#define FIX_1_175875602   FIX(1.175875602)

Definition at line 111 of file jidctint.c.

Referenced by jpeg_idct_islow().

#define FIX_1_501321110   FIX(1.501321110)

Definition at line 112 of file jidctint.c.

Referenced by jpeg_idct_islow().

#define FIX_1_847759065   FIX(1.847759065)

Definition at line 113 of file jidctint.c.

Referenced by jpeg_idct_islow().

#define FIX_1_961570560   FIX(1.961570560)

Definition at line 114 of file jidctint.c.

Referenced by jpeg_idct_islow().

#define FIX_2_053119869   FIX(2.053119869)

Definition at line 115 of file jidctint.c.

Referenced by jpeg_idct_islow().

#define FIX_2_562915447   FIX(2.562915447)

Definition at line 116 of file jidctint.c.

Referenced by jpeg_idct_islow().

#define FIX_3_072711026   FIX(3.072711026)

Definition at line 117 of file jidctint.c.

Referenced by jpeg_idct_islow().

#define JPEG_INTERNALS

Definition at line 28 of file jidctint.c.

#define MULTIPLY	(		var,
			const
	)		MULTIPLY16C16(var,const)

Definition at line 129 of file jidctint.c.

Referenced by jpeg_idct_islow().

#define PASS1_BITS   2

Definition at line 79 of file jidctint.c.

Referenced by jpeg_idct_islow().

---

Function Documentation

jpeg_idct_islow	(	j_decompress_ptr	cinfo,
		jpeg_component_info *	compptr,
		JCOEFPTR	coef_block,
		JSAMPARRAY	output_buf,
		JDIMENSION	output_col
	)

Definition at line 148 of file jidctint.c.

References coef_block, CONST_BITS, jpeg_component_info::dct_table, DCTSIZE, DCTSIZE2, DEQUANTIZE, DESCALE, FIX_0_298631336, FIX_0_390180644, FIX_0_541196100, FIX_0_765366865, FIX_0_899976223, FIX_1_175875602, FIX_1_501321110, FIX_1_847759065, FIX_1_961570560, FIX_2_053119869, FIX_2_562915447, FIX_3_072711026, IDCT_range_limit, int, MULTIPLY, output_col, PASS1_BITS, RANGE_MASK, and SHIFT_TEMPS.

Referenced by start_pass().