uops.c File Reference

#include <stdbool.h>
#include "libavutil/avassert.h"
#include "libavutil/mem.h"
#include "libavutil/refstruct.h"
#include "libavutil/tree.h"
#include "ops.h"
#include "ops_internal.h"
#include "uops.h"

Go to the source code of this file.

Macros
#define	UOP_NAME(OP, ABBR)   [SWS_UOP_##OP] = { "SWS_UOP_" #OP, ABBR, #OP }
#define	Q2PIXEL(val)   pixel_from_q(op->type, val)
#define	BPRINT_STR(str)   av_bprint_append_data(bp, str, strlen(str))

Functions
int	ff_sws_uop_cmp (const SwsUOp *a, const SwsUOp *b)
	Copyright (C) 2026 Niklas Haas. More...
static SwsPixel	pixel_from_q (SwsPixelType type, AVRational val)
static bool	pixel_is_1s (SwsPixelType type, SwsPixel val)
void	ff_sws_uop_name (const SwsUOp *op, char buf[SWS_UOP_NAME_MAX])
static int	generate_entry_struct (void *opaque, void *key)
static int	generate_entry_args (void *opaque, void *key)
static void	uop_uninit (SwsUOp *uop)
void	ff_sws_uop_list_free (SwsUOpList **p_ops)
SwsUOpList *	ff_sws_uop_list_alloc (void)
int	ff_sws_uop_list_append (SwsUOpList *uops, SwsUOp *uop)
int	ff_sws_dither_height (const SwsDitherUOp *dither)
	Computes (1 << size_log2) + MAX(y_offset). More...
static SwsPixelType	pixel_type_to_int (const SwsPixelType type)
static bool	exact_product_f32 (float a, float b)
static bool	exact_prod (SwsPixelType type, SwsPixel coef, const SwsComps *comps, int idx)
static bool	check_filter_fma (SwsContext *ctx, SwsUOpFlags flags, const SwsOp *op)
static int	translate_rw_op (SwsContext *ctx, SwsUOpList *ops, SwsUOpFlags flags, const SwsOp *op)
static int	count_idx (const int *arr, size_t size, int val)
static int	translate_move (SwsUOpList *ops, const SwsOp *op)
static int	translate_swizzle (SwsUOpList *ops, SwsUOpFlags flags, const SwsOp *op)
static int	translate_dither_op (SwsUOpList *ops, const SwsOp *op)
static int	translate_linear_op (SwsContext *ctx, SwsUOpList *ops, SwsUOpFlags flags, const SwsOp *op, const SwsComps *input)
static bool	is_expand_bit (SwsPixelType type, AVRational factor)
static int	translate_op (SwsContext *ctx, SwsUOpList *uops, SwsUOpFlags flags, const SwsOp *op, const SwsComps *input)
int	ff_sws_ops_translate (SwsContext *ctx, const SwsOpList *ops, SwsUOpFlags flags, SwsUOpList *uops)
	Translate a list of operations down to micro-ops, which can be further optimized and then directly executed by backends. More...
static int	register_uop (struct AVTreeNode **root, const SwsUOp *uop)
static int	register_flags (SwsContext *ctx, const SwsOpList *ops, SwsUOpFlags flags)
static int	register_uops (SwsContext *ctx, const SwsOpList *ops, SwsCompiledOp *out)
static int	register_all_uops (SwsContext *ctx, void *graph, SwsOpList *ops)
static int	enum_type (void *opaque, void *elem)
static int	free_uop_key (void *opaque, void *key)
int	ff_sws_uops_macros_gen (char **out_str)
	Generate a set of boilerplate C preprocessor macros for describing and programmatically iterating over all possible SwsUOps. More...

Variables
struct {
char   full [32]
char   abbr [32]
char   macro [32]
}	uop_names [SWS_UOP_TYPE_NB]
struct {
char   full [16]
char   prefix [8]
}	pixel_types [SWS_PIXEL_TYPE_NB]
static const SwsUOpFlags	uop_flags []
static const SwsOpBackend	backend_uops
static const SwsFlags	flags []

Macro Definition Documentation

UOP_NAME

#define UOP_NAME	(		OP,
			ABBR
	)		[SWS_UOP_##OP] = { "SWS_UOP_" #OP, ABBR, #OP }

Q2PIXEL

#define Q2PIXEL

(

val

)

pixel_from_q(op->type, val)

Definition at line 114 of file uops.c.

BPRINT_STR

#define BPRINT_STR

(

str

)

av_bprint_append_data(bp, str, strlen(str))

Function Documentation

ff_sws_uop_cmp()

int ff_sws_uop_cmp	(	const SwsUOp *	a,
		const SwsUOp *	b
	)

Copyright (C) 2026 Niklas Haas.

Compare two SwsUOps for equality (excluding constant data).

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 32 of file uops.c.

Referenced by ff_sws_uop_cmp_v(), and ff_sws_uop_lookup().

pixel_from_q()

static SwsPixel pixel_from_q ( SwsPixelType  type, AVRational  val  )

static

Definition at line 98 of file uops.c.

Referenced by exact_prod().

pixel_is_1s()

static bool pixel_is_1s ( SwsPixelType  type, SwsPixel  val  )

static

Definition at line 116 of file uops.c.

Referenced by translate_op().

ff_sws_uop_name()

void ff_sws_uop_name	(	const SwsUOp *	op,
		char	buf[SWS_UOP_NAME_MAX]
	)

Definition at line 129 of file uops.c.

Referenced by compile(), ff_sws_uop_lookup(), generate_entry_args(), generate_entry_struct(), and print_ops().

generate_entry_struct()

static int generate_entry_struct ( void *  opaque, void *  key  )

static

Definition at line 223 of file uops.c.

Referenced by ff_sws_uops_macros_gen().

generate_entry_args()

static int generate_entry_args ( void *  opaque, void *  key  )

static

Definition at line 289 of file uops.c.

Referenced by ff_sws_uops_macros_gen().

uop_uninit()

static void uop_uninit ( SwsUOp *  uop )

static

Definition at line 352 of file uops.c.

Referenced by ff_sws_uop_list_append(), and ff_sws_uop_list_free().

ff_sws_uop_list_free()

void ff_sws_uop_list_free

(

SwsUOpList **

p_ops

)

Definition at line 368 of file uops.c.

Referenced by compile(), print_ops(), and register_flags().

ff_sws_uop_list_alloc()

SwsUOpList* ff_sws_uop_list_alloc

(

void

)

Definition at line 382 of file uops.c.

Referenced by compile(), print_ops(), and register_flags().

ff_sws_uop_list_append()

int ff_sws_uop_list_append	(	SwsUOpList *	uops,
		SwsUOp *	uop
	)

Definition at line 387 of file uops.c.

Referenced by translate_dither_op(), translate_linear_op(), translate_move(), translate_op(), translate_rw_op(), and translate_swizzle().

ff_sws_dither_height()

int ff_sws_dither_height

(

const SwsDitherUOp *

dither

)

Computes (1 << size_log2) + MAX(y_offset).

The dither matrix attached to the SwsUOp is always pre-padded to this number of lines.

Definition at line 400 of file uops.c.

Referenced by DECL_SETUP(), and translate_dither_op().

pixel_type_to_int()

static SwsPixelType pixel_type_to_int ( const SwsPixelType  type )

static

Definition at line 408 of file uops.c.

Referenced by translate_move(), translate_op(), translate_rw_op(), and translate_swizzle().

exact_product_f32()

static bool exact_product_f32 ( float  a, float  b  )

static

Definition at line 421 of file uops.c.

Referenced by exact_prod().

exact_prod()

static bool exact_prod ( SwsPixelType  type, SwsPixel  coef, const SwsComps *  comps, int  idx  )

static

Definition at line 428 of file uops.c.

Referenced by translate_linear_op().

check_filter_fma()

static bool check_filter_fma ( SwsContext *  ctx, SwsUOpFlags  flags, const SwsOp *  op  )

static

Definition at line 450 of file uops.c.

Referenced by translate_rw_op().

translate_rw_op()

static int translate_rw_op ( SwsContext *  ctx, SwsUOpList *  ops, SwsUOpFlags  flags, const SwsOp *  op  )

static

Definition at line 468 of file uops.c.

Referenced by translate_op().

count_idx()

static int count_idx ( const int *  arr, size_t  size, int  val  )

static

Definition at line 510 of file uops.c.

Referenced by translate_move().

translate_move()

static int translate_move ( SwsUOpList *  ops, const SwsOp *  op  )

static

Definition at line 521 of file uops.c.

Referenced by translate_swizzle().

translate_swizzle()

static int translate_swizzle ( SwsUOpList *  ops, SwsUOpFlags  flags, const SwsOp *  op  )

static

Definition at line 592 of file uops.c.

Referenced by translate_op().

translate_dither_op()

static int translate_dither_op ( SwsUOpList *  ops, const SwsOp *  op  )

static

Definition at line 646 of file uops.c.

Referenced by translate_op().

translate_linear_op()

static int translate_linear_op ( SwsContext *  ctx, SwsUOpList *  ops, SwsUOpFlags  flags, const SwsOp *  op, const SwsComps *  input  )

static

Definition at line 694 of file uops.c.

Referenced by translate_op().

is_expand_bit()

static bool is_expand_bit ( SwsPixelType  type, AVRational  factor  )

static

Definition at line 731 of file uops.c.

Referenced by translate_op().

translate_op()

static int translate_op ( SwsContext *  ctx, SwsUOpList *  uops, SwsUOpFlags  flags, const SwsOp *  op, const SwsComps *  input  )

static

Definition at line 749 of file uops.c.

Referenced by ff_sws_ops_translate().

ff_sws_ops_translate()

int ff_sws_ops_translate	(	SwsContext *	ctx,
		const SwsOpList *	ops,
		SwsUOpFlags	flags,
		SwsUOpList *	uops
	)

Translate a list of operations down to micro-ops, which can be further optimized and then directly executed by backends.

Return 0 or a negative error code.

Definition at line 850 of file uops.c.

Referenced by compile(), print_ops(), and register_flags().

register_uop()

static int register_uop ( struct AVTreeNode **  root, const SwsUOp *  uop  )

static

Definition at line 863 of file uops.c.

Referenced by ff_sws_uops_macros_gen(), and register_flags().

register_flags()

static int register_flags ( SwsContext *  ctx, const SwsOpList *  ops, SwsUOpFlags  flags  )

static

Definition at line 884 of file uops.c.

Referenced by register_uops().

register_uops()

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

static

Definition at line 911 of file uops.c.

register_all_uops()

static int register_all_uops ( SwsContext *  ctx, void *  graph, SwsOpList *  ops  )

static

Definition at line 930 of file uops.c.

Referenced by ff_sws_uops_macros_gen().

enum_type()

static int enum_type ( void *  opaque, void *  elem  )

static

Definition at line 948 of file uops.c.

Referenced by ff_sws_uops_macros_gen().

free_uop_key()

static int free_uop_key ( void *  opaque, void *  key  )

static

Definition at line 958 of file uops.c.

Referenced by ff_sws_uops_macros_gen().

ff_sws_uops_macros_gen()

int ff_sws_uops_macros_gen

(

char **

out_str

)

Generate a set of boilerplate C preprocessor macros for describing and programmatically iterating over all possible SwsUOps.

This function can be quite slow as it iterates over every possible combination of pixel formats and flags.

Returns 0 or a negative error code. On success, an allocated string is returned via out_str, and must be av_free()'d by the caller.

Additionally make sure planar reads/writes are always available for all formats, because checkasm depends on them to be able to verify the input/output of any other operations.

Definition at line 964 of file uops.c.

Referenced by main().

Variable Documentation

full

char full[16]

Definition at line 44 of file uops.c.

Referenced by ff_avg_h264_qpel16_mc01_mmi(), ff_avg_h264_qpel16_mc02_mmi(), ff_avg_h264_qpel16_mc03_mmi(), ff_avg_h264_qpel16_mc11_mmi(), ff_avg_h264_qpel16_mc13_mmi(), ff_avg_h264_qpel16_mc31_mmi(), ff_avg_h264_qpel16_mc33_mmi(), ff_avg_h264_qpel4_mc01_mmi(), ff_avg_h264_qpel4_mc02_mmi(), ff_avg_h264_qpel4_mc03_mmi(), ff_avg_h264_qpel4_mc11_mmi(), ff_avg_h264_qpel4_mc12_mmi(), ff_avg_h264_qpel4_mc13_mmi(), ff_avg_h264_qpel4_mc31_mmi(), ff_avg_h264_qpel4_mc32_mmi(), ff_avg_h264_qpel4_mc33_mmi(), ff_avg_h264_qpel8_mc01_mmi(), ff_avg_h264_qpel8_mc02_mmi(), ff_avg_h264_qpel8_mc03_mmi(), ff_avg_h264_qpel8_mc11_mmi(), ff_avg_h264_qpel8_mc13_mmi(), ff_avg_h264_qpel8_mc31_mmi(), ff_avg_h264_qpel8_mc33_mmi(), ff_put_h264_qpel16_mc01_mmi(), ff_put_h264_qpel16_mc02_mmi(), ff_put_h264_qpel16_mc03_mmi(), ff_put_h264_qpel16_mc11_mmi(), ff_put_h264_qpel16_mc13_mmi(), ff_put_h264_qpel16_mc31_mmi(), ff_put_h264_qpel16_mc33_mmi(), ff_put_h264_qpel4_mc01_mmi(), ff_put_h264_qpel4_mc02_mmi(), ff_put_h264_qpel4_mc03_mmi(), ff_put_h264_qpel4_mc11_mmi(), ff_put_h264_qpel4_mc12_mmi(), ff_put_h264_qpel4_mc13_mmi(), ff_put_h264_qpel4_mc31_mmi(), ff_put_h264_qpel4_mc32_mmi(), ff_put_h264_qpel4_mc33_mmi(), ff_put_h264_qpel8_mc01_mmi(), ff_put_h264_qpel8_mc02_mmi(), ff_put_h264_qpel8_mc03_mmi(), ff_put_h264_qpel8_mc11_mmi(), ff_put_h264_qpel8_mc13_mmi(), ff_put_h264_qpel8_mc31_mmi(), ff_put_h264_qpel8_mc33_mmi(), filter_frame(), init(), map_idx_10_to_20(), map_idx_10_to_34(), map_idx_20_to_34(), map_idx_34_to_20(), parse_string(), remap20(), and remap34().

abbr

char abbr[32]

Definition at line 45 of file uops.c.

Referenced by av_parse_video_rate(), and av_parse_video_size().

macro

char macro[32]

Definition at line 46 of file uops.c.

Referenced by ff_sws_uops_macros_gen().

uop_names

const { ... } uop_names[SWS_UOP_TYPE_NB]

Referenced by ff_sws_uop_name(), ff_sws_uops_macros_gen(), generate_entry_args(), and generate_entry_struct().

prefix

char prefix[8]

Definition at line 89 of file uops.c.

Referenced by abs_decode(), aps(), avpriv_tempfile(), cbs_sei_get_unit(), coeff_abs_level_remaining_decode(), decode_residual(), dlsym_prefixed(), epic_jb_decode_tile(), exif_ifd_to_dict(), ff_cbs_sei_add_message(), ff_dnxhd_check_header_prefix(), ff_dnxhd_check_header_prefix_hr(), ff_dnxhd_parse_header_prefix(), ff_log_net_error(), ff_sws_uops_macros_gen(), filter_codec_opts(), frei0r_init(), init_cavlc_level_tab(), ivi_create_huff_from_desc(), load_path(), omx_init(), omx_try_load(), read_ts(), sei(), and strmatch().

pixel_types

const { ... } pixel_types[SWS_PIXEL_TYPE_NB]

Initial value:

= {
    [SWS_PIXEL_NONE] = { "SWS_PIXEL_NONE", ""     },
    [SWS_PIXEL_U8]   = { "SWS_PIXEL_U8",   "U8_"  },
    [SWS_PIXEL_U16]  = { "SWS_PIXEL_U16",  "U16_" },
    [SWS_PIXEL_U32]  = { "SWS_PIXEL_U32",  "U32_" },
    [SWS_PIXEL_F32]  = { "SWS_PIXEL_F32",  "F32_" },
}

Referenced by ff_sws_uops_macros_gen(), generate_entry_args(), and generate_entry_struct().

uop_flags

const SwsUOpFlags uop_flags[]

static

Initial value:

= {
    0,
    SWS_UOP_FLAG_FMA | SWS_UOP_FLAG_MOVE, 
}

Definition at line 906 of file uops.c.

Referenced by register_uops().

backend_uops

const SwsOpBackend backend_uops

static

Initial value:

= {
    .name    = "uops_gen",
    .compile = register_uops,
}

Definition at line 925 of file uops.c.

Referenced by register_all_uops().

flags

const SwsFlags flags[]

static

Initial value:

= {
    0,
    SWS_ACCURATE_RND,   
    SWS_BITEXACT,       
    SWS_ACCURATE_RND | SWS_BITEXACT,
}

Definition at line 940 of file uops.c.

Referenced by check_filter_fma(), ff_sws_ops_translate(), ff_sws_uops_macros_gen(), register_flags(), translate_linear_op(), translate_op(), translate_rw_op(), and translate_swizzle().