libavcodec/x86/idct_mmx.c File Reference

#include "libavutil/common.h"
#include "libavcodec/dsputil.h"
#include "dsputil_mmx.h"
#include "mmx.h"

Go to the source code of this file.

Defines
#define	ROW_SHIFT   11
#define	COL_SHIFT   6
#define	round(bias)   ((int)(((bias)+0.5) * (1<<ROW_SHIFT)))
#define	rounder(bias)   {round (bias), round (bias)}
#define	mmxext_table(c1, c2, c3, c4, c5, c6, c7)
#define	mmx_table(c1, c2, c3, c4, c5, c6, c7)
#define	T1   13036
#define	T2   27146
#define	T3   43790
#define	C4   23170
#define	declare_idct(idct, table, idct_row_head, idct_row, idct_row_tail, idct_row_mid)
Functions
static void	mmxext_row_head (int16_t *const row, const int offset, const int16_t *const table)
static void	mmxext_row (const int16_t *const table, const int32_t *const rounder)
static void	mmxext_row_tail (int16_t *const row, const int store)
static void	mmxext_row_mid (int16_t *const row, const int store, const int offset, const int16_t *const table)
static void	mmx_row_head (int16_t *const row, const int offset, const int16_t *const table)
static void	mmx_row (const int16_t *const table, const int32_t *const rounder)
static void	mmx_row_tail (int16_t *const row, const int store)
static void	mmx_row_mid (int16_t *const row, const int store, const int offset, const int16_t *const table)
static void	idct_col (int16_t *const col, const int offset)
void	ff_mmxext_idct (int16_t *const block)
void	ff_mmx_idct (int16_t *const block)
Variables
static const int32_t	rounder0 []
static const int32_t	rounder4 [] = rounder (0)
static const int32_t	rounder1 []
static const int32_t	rounder7 []
static const int32_t	rounder2 []
static const int32_t	rounder6 []
static const int32_t	rounder3 []
static const int32_t	rounder5 []

---

Define Documentation

#define C4   23170

#define COL_SHIFT   6

Definition at line 30 of file idct_mmx.c.

#define declare_idct	(	idct,
		table,
		idct_row_head,
		idct_row,
		idct_row_tail,
		idct_row_mid		)

Definition at line 562 of file idct_mmx.c.

#define mmx_table	(	c1,
		c2,
		c3,
		c4,
		c5,
		c6,
		c7		)

Value:

{  c4,  c2,  c4,  c6,   \
                                           c4,  c6, -c4, -c2,   \
                                           c1,  c3,  c3, -c7,   \
                                           c5,  c7, -c1, -c5,   \
                                           c4, -c6,  c4, -c2,   \
                                          -c4,  c2,  c4, -c6,   \
                                           c5, -c1,  c7, -c5,   \
                                           c7,  c3,  c3, -c1 }

Definition at line 193 of file idct_mmx.c.

#define mmxext_table	(	c1,
		c2,
		c3,
		c4,
		c5,
		c6,
		c7		)

Value:

{  c4,  c2, -c4, -c2,   \
                                                   c4,  c6,  c4,  c6,   \
                                                   c1,  c3, -c1, -c5,   \
                                                   c5,  c7,  c3, -c7,   \
                                                   c4, -c6,  c4, -c6,   \
                                                  -c4,  c2,  c4, -c2,   \
                                                   c5, -c1,  c3, -c1,   \
                                                   c7,  c3,  c7, -c5 }

Definition at line 78 of file idct_mmx.c.

#define round

(

bias

)

((int)(((bias)+0.5) * (1<<ROW_SHIFT)))

Definition at line 32 of file idct_mmx.c.

Referenced by atrac3_decode_frame(), and dequant().

#define rounder

(

bias

)

{round (bias), round (bias)}

Definition at line 33 of file idct_mmx.c.

Referenced by ff_simple_idct_add_vis(), and ff_simple_idct_put_vis().

#define ROW_SHIFT   11

Definition at line 29 of file idct_mmx.c.

#define T1   13036

Referenced by ff_jpegls_quantize(), idct_col(), and sha256_transform().

#define T2   27146

Referenced by ff_jpegls_quantize(), idct_col(), and sha256_transform().

#define T3   43790

Referenced by ff_jpegls_quantize(), and idct_col().

---

Function Documentation

void ff_mmx_idct

(

int16_t *const

block

)

Definition at line 600 of file idct_mmx.c.

void ff_mmxext_idct

(

int16_t *const

block

)

Definition at line 597 of file idct_mmx.c.

static void idct_col	(	int16_t *const	col,
		const int	offset
	)			[inline, static]

Definition at line 394 of file idct_mmx.c.

static void mmx_row	(	const int16_t *const	table,
		const int32_t *const	rounder
	)			[inline, static]

Definition at line 222 of file idct_mmx.c.

static void mmx_row_head	(	int16_t *const	row,
		const int	offset,
		const int16_t *const	table
	)			[inline, static]

Definition at line 202 of file idct_mmx.c.

static void mmx_row_mid	(	int16_t *const	row,
		const int	store,
		const int	offset,
		const int16_t *const	table
	)			[inline, static]

Definition at line 286 of file idct_mmx.c.

static void mmx_row_tail	(	int16_t *const	row,
		const int	store
	)			[inline, static]

Definition at line 262 of file idct_mmx.c.

static void mmxext_row	(	const int16_t *const	table,
		const int32_t *const	rounder
	)			[inline, static]

Definition at line 104 of file idct_mmx.c.

static void mmxext_row_head	(	int16_t *const	row,
		const int	offset,
		const int16_t *const	table
	)			[inline, static]

Definition at line 87 of file idct_mmx.c.

static void mmxext_row_mid	(	int16_t *const	row,
		const int	store,
		const int	offset,
		const int16_t *const	table
	)			[inline, static]

Definition at line 162 of file idct_mmx.c.

static void mmxext_row_tail	(	int16_t *const	row,
		const int	store
	)			[inline, static]

Definition at line 144 of file idct_mmx.c.

---

Variable Documentation

const int32_t rounder0[] [static]

Initial value:

    rounder ((1 << (COL_SHIFT - 1)) - 0.5)

Definition at line 543 of file idct_mmx.c.

const int32_t rounder1[] [static]

Initial value:

    rounder (1.25683487303)

Definition at line 546 of file idct_mmx.c.

const int32_t rounder2[] [static]

Initial value:

    rounder (0.60355339059)

Definition at line 550 of file idct_mmx.c.

const int32_t rounder3[] [static]

Initial value:

    rounder (0.087788325588)

Definition at line 554 of file idct_mmx.c.

const int32_t rounder4[] = rounder (0) [static]

Definition at line 545 of file idct_mmx.c.

const int32_t rounder5[] [static]

Initial value:

    rounder (-0.441341716183)

Definition at line 556 of file idct_mmx.c.

const int32_t rounder6[] [static]

Initial value:

    rounder (-0.25)

Definition at line 552 of file idct_mmx.c.

const int32_t rounder7[] [static]

Initial value:

    rounder (-0.25)

Definition at line 548 of file idct_mmx.c.