#include <float.h>
#include "libavutil/avassert.h"
#include "libavutil/mem.h"
#include "libavutil/x86/cpu.h"
#include "../ops_chain.h"
#include "../uops.h"
#include "../uops_macros.h"

Macros
#define	REF_ENTRY(EXT, NAME, ...)

#define	DECL_ENTRY(EXT, CHECK, SETUP, NAME, ...)

#define	DECL_OPS_COMMON(EXT, TYPE)

#define	REF_OPS_COMMON(EXT, TYPE)

#define	DECL_TABLE_U8(EXT, SIZE, FLAG)

#define	DECL_TABLE_U16(EXT, SIZE, FLAG)

#define	DECL_TABLE_U32(EXT, SIZE, FLAG)

#define	DECL_TABLE_F32(EXT, SIZE, FLAG)

#define	ASSIGN_SHUFFLE_FUNC(CPU, EXT, NAME, ...)

Functions
static int	setup_rw_packed (const SwsImplParams params, SwsImplResult out)
	Copyright (C) 2025-2026 Niklas Haas.

static int	setup_filter_v (const SwsImplParams params, SwsImplResult out)

static int	hscale_sizeof_weight (const SwsUOp *uop)

static int	setup_filter_h (const SwsImplParams params, SwsImplResult out)

static bool	check_filter_h_4x4 (const SwsImplParams *params)

static int	setup_filter_h_4x4 (const SwsImplParams params, SwsImplResult out)

static int	setup_scale (const SwsImplParams params, SwsImplResult out)

static int	setup_clear (const SwsImplParams params, SwsImplResult out)

static int	setup_dither (const SwsImplParams params, SwsImplResult out)

static int	setup_linear (const SwsImplParams params, SwsImplResult out)

static bool	uop_is_type_invariant (const SwsUOpType uop)

	SWS_DECL_FUNC (ff_sws_process1_x86)

	SWS_DECL_FUNC (ff_sws_process2_x86)

	SWS_DECL_FUNC (ff_sws_process3_x86)

	SWS_DECL_FUNC (ff_sws_process4_x86)

static int	get_mmsize (void)

static int	movsize (const int bytes, const int mmsize)

static int	translate_shuffle (const SwsUOp uop, int mmsize, SwsCompiledOp out)

static uint32_t	expand32 (const SwsPixelType type, const SwsPixel value)

static void	normalize_clear (SwsUOp *uop)

static int	compile_uops_x86 (SwsContext ctx, const SwsUOpList uops, SwsCompiledOp *out)

static int	compile_x86 (SwsContext ctx, const SwsOpList ops, SwsCompiledOp *out)

Variables
static const SwsUOpTable *const	tables []

const SwsOpBackend	backend_x86

Macro Definition Documentation

◆ REF_ENTRY

#define REF_ENTRY	(	EXT,
		NAME,
		... )

Value:

&uop_##NAME##EXT,

Definition at line 300 of file ops.c.

◆ DECL_ENTRY

#define DECL_ENTRY	(	EXT,
		CHECK,
		SETUP,
		NAME,
		... )

Value:

    void ff_##NAME##EXT(void);                                                  \
    static const SwsUOpEntry uop_##NAME##EXT = {                                \
        .func = (SwsFuncPtr) ff_##NAME##EXT,                                    \
        .check = CHECK,                                                         \
        .setup = SETUP,                                                         \
        __VA_ARGS__,                                                            \
    };

Definition at line 301 of file ops.c.

◆ DECL_OPS_COMMON

#define DECL_OPS_COMMON	(		EXT,
			TYPE )

Value:

SWS_FOR_STRUCT(TYPE, READ_PACKED,     DECL_ENTRY, EXT, NULL, setup_rw_packed)   \
SWS_FOR_STRUCT(TYPE, READ_NIBBLE,     DECL_ENTRY, EXT, NULL, NULL)              \
SWS_FOR_STRUCT(TYPE, READ_BIT,        DECL_ENTRY, EXT, NULL, NULL)              \
SWS_FOR_STRUCT(TYPE, READ_PALETTE,    DECL_ENTRY, EXT, NULL, NULL)              \
SWS_FOR_STRUCT(TYPE, WRITE_PACKED,    DECL_ENTRY, EXT, NULL, setup_rw_packed)   \
SWS_FOR_STRUCT(TYPE, WRITE_NIBBLE,    DECL_ENTRY, EXT, NULL, NULL)              \
SWS_FOR_STRUCT(TYPE, WRITE_BIT,       DECL_ENTRY, EXT, NULL, NULL)              \
SWS_FOR_STRUCT(TYPE, SWAP_BYTES,      DECL_ENTRY, EXT, NULL, NULL)              \
SWS_FOR_STRUCT(TYPE, EXPAND_BIT,      DECL_ENTRY, EXT, NULL, NULL)              \
SWS_FOR_STRUCT(TYPE, PERMUTE,         DECL_ENTRY, EXT, NULL, NULL)              \
SWS_FOR_STRUCT(TYPE, COPY,            DECL_ENTRY, EXT, NULL, NULL)              \
SWS_FOR_STRUCT(TYPE, SCALE,           DECL_ENTRY, EXT, NULL, setup_scale)       \
SWS_FOR_STRUCT(TYPE, ADD,             DECL_ENTRY, EXT, NULL, ff_sws_setup_vec4) \
SWS_FOR_STRUCT(TYPE, MIN,             DECL_ENTRY, EXT, NULL, ff_sws_setup_vec4) \
SWS_FOR_STRUCT(TYPE, MAX,             DECL_ENTRY, EXT, NULL, ff_sws_setup_vec4) \
SWS_FOR_STRUCT(TYPE, UNPACK,          DECL_ENTRY, EXT, NULL, NULL)              \
SWS_FOR_STRUCT(TYPE, PACK,            DECL_ENTRY, EXT, NULL, NULL)              \
SWS_FOR_STRUCT(TYPE, LSHIFT,          DECL_ENTRY, EXT, NULL, NULL)              \
SWS_FOR_STRUCT(TYPE, RSHIFT,          DECL_ENTRY, EXT, NULL, NULL)              \
SWS_FOR_STRUCT(TYPE, LINEAR,          DECL_ENTRY, EXT, NULL, setup_linear)      \
SWS_FOR_STRUCT(TYPE, LINEAR_FMA,      DECL_ENTRY, EXT, NULL, setup_linear)      \
SWS_FOR_STRUCT(TYPE, DITHER,          DECL_ENTRY, EXT, NULL, setup_dither)      \
/* end of macro */

Definition at line 311 of file ops.c.

◆ REF_OPS_COMMON

#define REF_OPS_COMMON	(		EXT,
			TYPE )

Value:

    SWS_FOR(TYPE, READ_PACKED,    REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, READ_NIBBLE,    REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, READ_BIT,       REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, READ_PALETTE,   REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, WRITE_PACKED,   REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, WRITE_NIBBLE,   REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, WRITE_BIT,      REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, SWAP_BYTES,     REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, EXPAND_BIT,     REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, PERMUTE,        REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, COPY,           REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, SCALE,          REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, ADD,            REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, MIN,            REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, MAX,            REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, UNPACK,         REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, PACK,           REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, LSHIFT,         REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, RSHIFT,         REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, LINEAR,         REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, LINEAR_FMA,     REF_ENTRY, EXT)                               \
    SWS_FOR(TYPE, DITHER,         REF_ENTRY, EXT)                               \
    /* end of macro */

Definition at line 336 of file ops.c.

◆ DECL_TABLE_U8

#define DECL_TABLE_U8	(	EXT,
		SIZE,
		FLAG )

Value:

DECL_OPS_COMMON(EXT, U8)                                                        \
SWS_FOR_STRUCT(U8, READ_PLANAR,     DECL_ENTRY, EXT, NULL, NULL)                \
SWS_FOR_STRUCT(U8, WRITE_PLANAR,    DECL_ENTRY, EXT, NULL, NULL)                \
SWS_FOR_STRUCT(U8, CLEAR,           DECL_ENTRY, EXT, NULL, setup_clear)         \
                                                                                \
static const SwsUOpTable uops_u8##EXT = {                                       \
    .cpu_flags = AV_CPU_FLAG_##FLAG,                                            \
    .block_size = SIZE,                                                         \
    .entries = {                                                                \
        REF_OPS_COMMON(EXT, U8)                                                 \
        SWS_FOR(U8, READ_PLANAR,    REF_ENTRY, EXT)                             \
        SWS_FOR(U8, WRITE_PLANAR,   REF_ENTRY, EXT)                             \
        SWS_FOR(U8, CLEAR,          REF_ENTRY, EXT)                             \
        NULL                                                                    \
    },                                                                          \
};

Definition at line 361 of file ops.c.

◆ DECL_TABLE_U16

#define DECL_TABLE_U16	(	EXT,
		SIZE,
		FLAG )

Value:

DECL_OPS_COMMON(EXT, U16)                                                       \
SWS_FOR_STRUCT(U8,  TO_U16, DECL_ENTRY, EXT, NULL, NULL)                        \
SWS_FOR_STRUCT(U16, TO_U8,  DECL_ENTRY, EXT, NULL, NULL)                        \
SWS_FOR_STRUCT(U8,  EXPAND_PAIR, DECL_ENTRY, EXT, NULL, NULL)                   \
                                                                                \
static const SwsUOpTable uops_u16##EXT = {                                      \
    .cpu_flags = AV_CPU_FLAG_##FLAG,                                            \
    .block_size = SIZE,                                                         \
    .entries = {                                                                \
        REF_OPS_COMMON(EXT, U16)                                                \
        SWS_FOR(U8,  TO_U16, REF_ENTRY, EXT)                                    \
        SWS_FOR(U16, TO_U8,  REF_ENTRY, EXT)                                    \
        SWS_FOR(U8,  EXPAND_PAIR, REF_ENTRY, EXT)                               \
        NULL                                                                    \
    },                                                                          \
};

Definition at line 379 of file ops.c.

◆ DECL_TABLE_U32

#define DECL_TABLE_U32	(	EXT,
		SIZE,
		FLAG )

Value:

DECL_OPS_COMMON(EXT, U32)                                                       \
SWS_FOR_STRUCT(U8,  TO_U32, DECL_ENTRY, EXT, NULL, NULL)                        \
SWS_FOR_STRUCT(U32, TO_U8,  DECL_ENTRY, EXT, NULL, NULL)                        \
SWS_FOR_STRUCT(U16, TO_U32, DECL_ENTRY, EXT, NULL, NULL)                        \
SWS_FOR_STRUCT(U32, TO_U16, DECL_ENTRY, EXT, NULL, NULL)                        \
SWS_FOR_STRUCT(U8,  EXPAND_QUAD, DECL_ENTRY, EXT, NULL, NULL)                   \
                                                                                \
static const SwsUOpTable uops_u32##EXT = {                                      \
    .cpu_flags = AV_CPU_FLAG_##FLAG,                                            \
    .block_size = SIZE,                                                         \
    .entries = {                                                                \
        REF_OPS_COMMON(EXT, U32)                                                \
        SWS_FOR(U8,  TO_U32, REF_ENTRY, EXT)                                    \
        SWS_FOR(U32, TO_U8,  REF_ENTRY, EXT)                                    \
        SWS_FOR(U16, TO_U32, REF_ENTRY, EXT)                                    \
        SWS_FOR(U32, TO_U16, REF_ENTRY, EXT)                                    \
        SWS_FOR(U8,  EXPAND_QUAD, REF_ENTRY, EXT)                               \
        NULL                                                                    \
    },                                                                          \
};

Definition at line 397 of file ops.c.

◆ DECL_TABLE_F32

#define DECL_TABLE_F32	(	EXT,
		SIZE,
		FLAG )

Definition at line 419 of file ops.c.

◆ ASSIGN_SHUFFLE_FUNC

#define ASSIGN_SHUFFLE_FUNC	(	CPU,
		EXT,
		NAME,
		... )

Value:

do {                                                                            \
    const SwsUOpEntry *entry = &uop_##NAME##EXT;                                \
    if (!memcmp(&uop->par, &entry->par, sizeof(uop->par))) {                    \
        out->func = (SwsOpFunc) entry->func;                                    \
        out->cpu_flags = AV_CPU_FLAG_##CPU;                                     \
    }                                                                           \
} while (0);

Referenced by translate_shuffle().

Function Documentation

◆ setup_rw_packed()

static int setup_rw_packed	(	const SwsImplParams *	params,
		SwsImplResult *	out )

static

This file is part of FFmpeg.

FFmpeg is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

FFmpeg is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with FFmpeg; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

Definition at line 31 of file ops.c.

◆ setup_filter_v()

static int setup_filter_v	(	const SwsImplParams *	params,
		SwsImplResult *	out )

static

Definition at line 46 of file ops.c.

Referenced by DECL_SETUP().

◆ hscale_sizeof_weight()

static int hscale_sizeof_weight ( const SwsUOp * uop )

static

Definition at line 66 of file ops.c.

Referenced by setup_filter_h(), and setup_filter_h_4x4().

◆ setup_filter_h()

static int setup_filter_h	(	const SwsImplParams *	params,
		SwsImplResult *	out )

static

vpgatherdd gathers 32 bits at a time; so if we're filtering a smaller size, we need to gather 2/4 taps simultaneously and unroll the inner loop over several packed samples.

Transpose filter weights to group (aligned) taps by block

Definition at line 76 of file ops.c.

Referenced by DECL_SETUP().

◆ check_filter_h_4x4()

static bool check_filter_h_4x4 ( const SwsImplParams * params )

static

Otherwise, prefer it above a certain filter size. Empirically, this kernel seems to be faster whenever the reference/gather kernel crosses a breakpoint for the number of gathers needed, but this filter doesn't.

Tested on a Lunar Lake (Intel Core Ultra 7 258V) system.

Definition at line 164 of file ops.c.

◆ setup_filter_h_4x4()

static int setup_filter_h_4x4	(	const SwsImplParams *	params,
		SwsImplResult *	out )

static

Desired memory layout: [w][taps][pixels_align][taps_align]

Example with taps_align=8, pixels_align=4: [a0, a1, ... a7] weights for pixel 0, taps 0..7 [b0, b1, ... b7] weights for pixel 1, taps 0..7 [c0, c1, ... c7] weights for pixel 2, taps 0..7 [d0, d1, ... d7] weights for pixel 3, taps 0..7 [a8, a9, ... a15] weights for pixel 0, taps 8..15 ... repeat for all taps, then move on to pixels 4..7, etc.

Definition at line 188 of file ops.c.

◆ setup_scale()

static int setup_scale	(	const SwsImplParams *	params,
		SwsImplResult *	out )

static

Definition at line 251 of file ops.c.

◆ setup_clear()

static int setup_clear	(	const SwsImplParams *	params,
		SwsImplResult *	out )

static

Definition at line 265 of file ops.c.

◆ setup_dither()

static int setup_dither	(	const SwsImplParams *	params,
		SwsImplResult *	out )

static

Definition at line 273 of file ops.c.

Referenced by DECL_SETUP().

◆ setup_linear()

static int setup_linear	(	const SwsImplParams *	params,
		SwsImplResult *	out )

static

Definition at line 280 of file ops.c.

Referenced by DECL_SETUP().

◆ uop_is_type_invariant()

static bool uop_is_type_invariant ( const SwsUOpType uop )

static

Definition at line 288 of file ops.c.

Referenced by compile_uops_x86().

◆ SWS_DECL_FUNC() [1/4]

SWS_DECL_FUNC ( ff_sws_process1_x86 )

◆ SWS_DECL_FUNC() [2/4]

SWS_DECL_FUNC ( ff_sws_process2_x86 )

◆ SWS_DECL_FUNC() [3/4]

SWS_DECL_FUNC ( ff_sws_process3_x86 )

◆ SWS_DECL_FUNC() [4/4]

SWS_DECL_FUNC ( ff_sws_process4_x86 )

◆ get_mmsize()

static int get_mmsize ( void )

static

Definition at line 497 of file ops.c.

Referenced by compile_uops_x86(), compile_x86(), and get_mmsize().

◆ movsize()

static int movsize	(	const int	bytes,
		const int	mmsize )

static

Definition at line 510 of file ops.c.

Referenced by translate_shuffle().

◆ translate_shuffle()

static int translate_shuffle	(	const SwsUOp *	uop,
		int	mmsize,
		SwsCompiledOp *	out )

static

Definition at line 519 of file ops.c.

Referenced by compile_uops_x86().

◆ expand32()

static uint32_t expand32	(	const SwsPixelType	type,
		const SwsPixel	value )

static

Definition at line 586 of file ops.c.

Referenced by normalize_clear().

◆ normalize_clear()

static void normalize_clear ( SwsUOp * uop )

static

Definition at line 597 of file ops.c.

Referenced by compile_uops_x86().

◆ compile_uops_x86()

static int compile_uops_x86	(	SwsContext *	ctx,
		const SwsUOpList *	uops,
		SwsCompiledOp *	out )

static

Definition at line 603 of file ops.c.

Referenced by compile_x86().

◆ compile_x86()

static int compile_x86	(	SwsContext *	ctx,
		const SwsOpList *	ops,
		SwsCompiledOp *	out )

static

Definition at line 679 of file ops.c.

Variable Documentation

◆ tables

const SwsUOpTable* const tables[]

static

Initial value:

= {
    &uops_u8_m1_sse4,
    &uops_u8_m1_avx2, 
    &uops_u8_m2_sse4,
    &uops_u8_m2_avx2,
    &uops_u16_m1_avx2,
    &uops_u16_m2_avx2,
    &uops_u32_m2_avx2,
    &uops_f32_m2_avx2,
}

Definition at line 475 of file ops.c.

◆ backend_x86

const SwsOpBackend backend_x86

Initial value:

= {
    .name           = "x86",
    .flags          = SWS_BACKEND_X86,
    .compile        = compile_x86,
    .compile_uops   = compile_uops_x86,
    .hw_format      = AV_PIX_FMT_NONE,
}

Definition at line 705 of file ops.c.

Macros

Functions

Variables

Macro Definition Documentation

◆ REF_ENTRY

◆ DECL_ENTRY

◆ DECL_OPS_COMMON

◆ REF_OPS_COMMON

◆ DECL_TABLE_U8

◆ DECL_TABLE_U16

◆ DECL_TABLE_U32

◆ DECL_TABLE_F32

◆ ASSIGN_SHUFFLE_FUNC

Function Documentation

◆ setup_rw_packed()

◆ setup_filter_v()

◆ hscale_sizeof_weight()

◆ setup_filter_h()

◆ check_filter_h_4x4()

◆ setup_filter_h_4x4()

◆ setup_scale()

◆ setup_clear()

◆ setup_dither()

◆ setup_linear()

◆ uop_is_type_invariant()

◆ SWS_DECL_FUNC() [1/4]

◆ SWS_DECL_FUNC() [2/4]

◆ SWS_DECL_FUNC() [3/4]

◆ SWS_DECL_FUNC() [4/4]

◆ get_mmsize()

◆ movsize()

◆ translate_shuffle()

◆ expand32()

◆ normalize_clear()

◆ compile_uops_x86()

◆ compile_x86()

Variable Documentation

◆ tables

◆ backend_x86