#include "libavutil/common.h"
#include "dct.h"
#include "bit_depth_template.c"

Macros
#define	DCTSIZE 8

#define	BITS_IN_JSAMPLE BIT_DEPTH

#define	GLOBAL(x) x

#define	RIGHT_SHIFT(x, n) ((x) >> (n))

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

#define	DESCALE(x, n) RIGHT_SHIFT((x) + (1 << ((n) - 1)), n)

#define	CONST_BITS 13

#define	PASS1_BITS 1 /* lose a little precision to avoid overflow */

#define	OUT_SHIFT (PASS1_BITS + 1)

#define	FIX_0_298631336 ((int32_t) 2446) /* FIX(0.298631336) */

#define	FIX_0_390180644 ((int32_t) 3196) /* FIX(0.390180644) */

#define	FIX_0_541196100 ((int32_t) 4433) /* FIX(0.541196100) */

#define	FIX_0_765366865 ((int32_t) 6270) /* FIX(0.765366865) */

#define	FIX_0_899976223 ((int32_t) 7373) /* FIX(0.899976223) */

#define	FIX_1_175875602 ((int32_t) 9633) /* FIX(1.175875602) */

#define	FIX_1_501321110 ((int32_t) 12299) /* FIX(1.501321110) */

#define	FIX_1_847759065 ((int32_t) 15137) /* FIX(1.847759065) */

#define	FIX_1_961570560 ((int32_t) 16069) /* FIX(1.961570560) */

#define	FIX_2_053119869 ((int32_t) 16819) /* FIX(2.053119869) */

#define	FIX_2_562915447 ((int32_t) 20995) /* FIX(2.562915447) */

#define	FIX_3_072711026 ((int32_t) 25172) /* FIX(3.072711026) */

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

Functions
static av_always_inline void FUNC()	row_fdct (int16_t *data)

FUNC()	ff_jpeg_fdct_islow (int16_t *data)

FUNC()	ff_fdct248_islow (int16_t *data)

Detailed Description

Independent JPEG Group's slow & accurate dct.

Definition in file jfdctint_template.c.

Macro Definition Documentation

◆ DCTSIZE

#define DCTSIZE 8

Definition at line 67 of file jfdctint_template.c.

◆ BITS_IN_JSAMPLE

#define BITS_IN_JSAMPLE BIT_DEPTH

Definition at line 68 of file jfdctint_template.c.

◆ GLOBAL

#define GLOBAL ( x ) x

Definition at line 69 of file jfdctint_template.c.

◆ RIGHT_SHIFT

#define RIGHT_SHIFT	(	x,
		n
	)	((x) >> (n))

Definition at line 70 of file jfdctint_template.c.

◆ MULTIPLY16C16

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

Definition at line 71 of file jfdctint_template.c.

◆ DESCALE

#define DESCALE	(	x,
		n
	)	RIGHT_SHIFT((x) + (1 << ((n) - 1)), n)

Definition at line 72 of file jfdctint_template.c.

◆ CONST_BITS

#define CONST_BITS 13

Definition at line 127 of file jfdctint_template.c.

◆ PASS1_BITS

#define PASS1_BITS 1 /* lose a little precision to avoid overflow */

Definition at line 128 of file jfdctint_template.c.

◆ OUT_SHIFT

#define OUT_SHIFT (PASS1_BITS + 1)

Definition at line 129 of file jfdctint_template.c.

◆ FIX_0_298631336

#define FIX_0_298631336 ((int32_t) 2446) /* FIX(0.298631336) */

Definition at line 140 of file jfdctint_template.c.

◆ FIX_0_390180644

#define FIX_0_390180644 ((int32_t) 3196) /* FIX(0.390180644) */

Definition at line 141 of file jfdctint_template.c.

◆ FIX_0_541196100

#define FIX_0_541196100 ((int32_t) 4433) /* FIX(0.541196100) */

Definition at line 142 of file jfdctint_template.c.

◆ FIX_0_765366865

#define FIX_0_765366865 ((int32_t) 6270) /* FIX(0.765366865) */

Definition at line 143 of file jfdctint_template.c.

◆ FIX_0_899976223

#define FIX_0_899976223 ((int32_t) 7373) /* FIX(0.899976223) */

Definition at line 144 of file jfdctint_template.c.

◆ FIX_1_175875602

#define FIX_1_175875602 ((int32_t) 9633) /* FIX(1.175875602) */

Definition at line 145 of file jfdctint_template.c.

◆ FIX_1_501321110

#define FIX_1_501321110 ((int32_t) 12299) /* FIX(1.501321110) */

Definition at line 146 of file jfdctint_template.c.

◆ FIX_1_847759065

#define FIX_1_847759065 ((int32_t) 15137) /* FIX(1.847759065) */

Definition at line 147 of file jfdctint_template.c.

◆ FIX_1_961570560

#define FIX_1_961570560 ((int32_t) 16069) /* FIX(1.961570560) */

Definition at line 148 of file jfdctint_template.c.

◆ FIX_2_053119869

#define FIX_2_053119869 ((int32_t) 16819) /* FIX(2.053119869) */

Definition at line 149 of file jfdctint_template.c.

◆ FIX_2_562915447

#define FIX_2_562915447 ((int32_t) 20995) /* FIX(2.562915447) */

Definition at line 150 of file jfdctint_template.c.

◆ FIX_3_072711026

#define FIX_3_072711026 ((int32_t) 25172) /* FIX(3.072711026) */

Definition at line 151 of file jfdctint_template.c.

◆ MULTIPLY

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

Definition at line 178 of file jfdctint_template.c.

Function Documentation

◆ row_fdct()

static av_always_inline void FUNC() row_fdct ( int16_t * data )

static

Definition at line 182 of file jfdctint_template.c.

Referenced by ff_fdct248_islow(), and ff_jpeg_fdct_islow().

◆ ff_jpeg_fdct_islow()

FUNC() ff_jpeg_fdct_islow ( int16_t * data )

Definition at line 260 of file jfdctint_template.c.

◆ ff_fdct248_islow()

FUNC() ff_fdct248_islow ( int16_t * data )

Definition at line 342 of file jfdctint_template.c.

Macros

Functions