#include "jinclude.h"
#include "mrpt_jpeglib.h"
#include "jdct.h"

Include dependency graph for jidctint.cpp:

Macros
#define	JPEG_INTERNALS

#define	CONST_BITS 13

#define	PASS1_BITS 2

#define	FIX_0_298631336 ((INT32) 2446) /* FIX(0.298631336) */

#define	FIX_0_390180644 ((INT32) 3196) /* FIX(0.390180644) */

#define	FIX_0_541196100 ((INT32) 4433) /* FIX(0.541196100) */

#define	FIX_0_765366865 ((INT32) 6270) /* FIX(0.765366865) */

#define	FIX_0_899976223 ((INT32) 7373) /* FIX(0.899976223) */

#define	FIX_1_175875602 ((INT32) 9633) /* FIX(1.175875602) */

#define	FIX_1_501321110 ((INT32) 12299) /* FIX(1.501321110) */

#define	FIX_1_847759065 ((INT32) 15137) /* FIX(1.847759065) */

#define	FIX_1_961570560 ((INT32) 16069) /* FIX(1.961570560) */

#define	FIX_2_053119869 ((INT32) 16819) /* FIX(2.053119869) */

#define	FIX_2_562915447 ((INT32) 20995) /* FIX(2.562915447) */

#define	FIX_3_072711026 ((INT32) 25172) /* 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)

Macro Definition Documentation

◆ CONST_BITS

#define CONST_BITS 13

Definition at line 60 of file jidctint.cpp.

◆ DEQUANTIZE

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

Definition at line 122 of file jidctint.cpp.

◆ FIX_0_298631336

#define FIX_0_298631336 ((INT32) 2446) /* FIX(0.298631336) */

Definition at line 75 of file jidctint.cpp.

◆ FIX_0_390180644

#define FIX_0_390180644 ((INT32) 3196) /* FIX(0.390180644) */

Definition at line 76 of file jidctint.cpp.

◆ FIX_0_541196100

#define FIX_0_541196100 ((INT32) 4433) /* FIX(0.541196100) */

Definition at line 77 of file jidctint.cpp.

◆ FIX_0_765366865

#define FIX_0_765366865 ((INT32) 6270) /* FIX(0.765366865) */

Definition at line 78 of file jidctint.cpp.

◆ FIX_0_899976223

#define FIX_0_899976223 ((INT32) 7373) /* FIX(0.899976223) */

Definition at line 79 of file jidctint.cpp.

◆ FIX_1_175875602

#define FIX_1_175875602 ((INT32) 9633) /* FIX(1.175875602) */

Definition at line 80 of file jidctint.cpp.

◆ FIX_1_501321110

#define FIX_1_501321110 ((INT32) 12299) /* FIX(1.501321110) */

Definition at line 81 of file jidctint.cpp.

◆ FIX_1_847759065

#define FIX_1_847759065 ((INT32) 15137) /* FIX(1.847759065) */

Definition at line 82 of file jidctint.cpp.

◆ FIX_1_961570560

#define FIX_1_961570560 ((INT32) 16069) /* FIX(1.961570560) */

Definition at line 83 of file jidctint.cpp.

◆ FIX_2_053119869

#define FIX_2_053119869 ((INT32) 16819) /* FIX(2.053119869) */

Definition at line 84 of file jidctint.cpp.

◆ FIX_2_562915447

#define FIX_2_562915447 ((INT32) 20995) /* FIX(2.562915447) */

Definition at line 85 of file jidctint.cpp.

◆ FIX_3_072711026

#define FIX_3_072711026 ((INT32) 25172) /* FIX(3.072711026) */

Definition at line 86 of file jidctint.cpp.

◆ JPEG_INTERNALS

#define JPEG_INTERNALS

Definition at line 10 of file jidctint.cpp.

◆ MULTIPLY

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

Definition at line 111 of file jidctint.cpp.

◆ PASS1_BITS

#define PASS1_BITS 2

Definition at line 61 of file jidctint.cpp.

Function Documentation

◆ jpeg_idct_islow()

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

Definition at line 130 of file jidctint.cpp.

References coef_block, compptr, 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, MULTIPLY, output_buf, output_col, PASS1_BITS, RANGE_MASK, and SHIFT_TEMPS.

Referenced by start_pass().

Macros

Functions