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Independent JPEG Group's slow & accurate dct. More...

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

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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

#define BITS_IN_JSAMPLE BIT_DEPTH

Definition at line 68 of file jfdctint_template.c.

#define CONST_BITS 13

Definition at line 132 of file jfdctint_template.c.

Referenced by ff_fdct248_islow(), ff_jpeg_fdct_islow(), and row_fdct().

#define DCTSIZE 8

Definition at line 67 of file jfdctint_template.c.

Referenced by ff_fdct248_islow(), ff_jpeg_fdct_islow(), and row_fdct().

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

Definition at line 74 of file jfdctint_template.c.

Referenced by ff_fdct248_islow(), ff_jpeg_fdct_islow(), and row_fdct().

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

Definition at line 145 of file jfdctint_template.c.

Referenced by ff_jpeg_fdct_islow(), and row_fdct().

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

Definition at line 146 of file jfdctint_template.c.

Referenced by ff_jpeg_fdct_islow(), and row_fdct().

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

Definition at line 147 of file jfdctint_template.c.

Referenced by ff_fdct248_islow(), ff_jpeg_fdct_islow(), and row_fdct().

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

Definition at line 148 of file jfdctint_template.c.

Referenced by ff_fdct248_islow(), ff_jpeg_fdct_islow(), and row_fdct().

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

Definition at line 149 of file jfdctint_template.c.

Referenced by ff_jpeg_fdct_islow(), and row_fdct().

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

Definition at line 150 of file jfdctint_template.c.

Referenced by ff_jpeg_fdct_islow(), and row_fdct().

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

Definition at line 151 of file jfdctint_template.c.

Referenced by ff_jpeg_fdct_islow(), and row_fdct().

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

Definition at line 152 of file jfdctint_template.c.

Referenced by ff_fdct248_islow(), ff_jpeg_fdct_islow(), and row_fdct().

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

Definition at line 153 of file jfdctint_template.c.

Referenced by ff_jpeg_fdct_islow(), and row_fdct().

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

Definition at line 154 of file jfdctint_template.c.

Referenced by ff_jpeg_fdct_islow(), and row_fdct().

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

Definition at line 155 of file jfdctint_template.c.

Referenced by ff_jpeg_fdct_islow(), and row_fdct().

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

Definition at line 156 of file jfdctint_template.c.

Referenced by ff_jpeg_fdct_islow(), and row_fdct().

#define GLOBAL ( x ) x

Definition at line 69 of file jfdctint_template.c.

Referenced by ff_jpeg_fdct_islow(), and row_fdct().

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

Definition at line 183 of file jfdctint_template.c.

Referenced by ff_fdct248_islow(), ff_jpeg_fdct_islow(), and row_fdct().

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

Definition at line 71 of file jfdctint_template.c.

#define OUT_SHIFT (PASS1_BITS + 1)

Definition at line 134 of file jfdctint_template.c.

Referenced by ff_fdct248_islow(), and ff_jpeg_fdct_islow().

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

Definition at line 133 of file jfdctint_template.c.

Referenced by row_fdct().

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

Definition at line 70 of file jfdctint_template.c.

Function Documentation

FUNC() ff_fdct248_islow ( int16_t * data )

Definition at line 347 of file jfdctint_template.c.

FUNC() ff_jpeg_fdct_islow ( int16_t * data )

Definition at line 265 of file jfdctint_template.c.

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

static

Definition at line 187 of file jfdctint_template.c.

Referenced by ff_fdct248_islow(), and ff_jpeg_fdct_islow().