/src/ffmpeg/libswscale/ops_backend.h

Source
/**
 * Copyright (C) 2025 Niklas Haas
 *
 * 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
 */

#ifndef SWSCALE_OPS_BACKEND_H
#define SWSCALE_OPS_BACKEND_H

/**
 * Helper macros for the C-based backend.
 *
 * To use these macros, the following types must be defined:
 *  - PIXEL_TYPE should be one of SWS_PIXEL_*
 *  - pixel_t should be the type of pixels
 *  - block_t should be the type of blocks (groups of pixels)
 */

#include <assert.h>
#include <float.h>
#include <stdint.h>

#include "libavutil/attributes.h"
#include "libavutil/mem.h"

#include "ops_chain.h"

/**
 * Internal context holding per-iter execution data. The data pointers will be
 * directly incremented by the corresponding read/write functions.
 */
typedef struct SwsOpIter {
    uintptr_t in[4];
    uintptr_t out[4];
    int x, y;

    /* Link back to per-slice execution context */
    const SwsOpExec *exec;
} SwsOpIter;

#ifdef __clang__
#  define SWS_LOOP AV_PRAGMA(clang loop vectorize(assume_safety))
#elif defined(__GNUC__)
#  define SWS_LOOP AV_PRAGMA(GCC ivdep)
#else
#  define SWS_LOOP
#endif

/* Miscellaneous helpers */
#define bitfn2(name, ext) name ## _ ## ext
#define bitfn(name, ext)  bitfn2(name, ext)

#define FN_SUFFIX AV_JOIN(FMT_CHAR, BIT_DEPTH)
#define fn(name)  bitfn(name, FN_SUFFIX)

#define av_q2pixel(q) ((q).den ? (pixel_t) (q).num / (q).den : 0)
#define bump_ptr(ptr, bump) ((pixel_t *) ((uintptr_t) (ptr) + (bump)))

/* Helper macros to make writing common function signatures less painful */
#define DECL_FUNC(NAME, ...)                                                    \
    static av_always_inline void fn(NAME)(SwsOpIter *restrict iter,             \
                                          const SwsOpImpl *restrict impl,       \
                                          block_t x, block_t y,                 \
                                          block_t z, block_t w,                 \
                                          __VA_ARGS__)

#define DECL_READ(NAME, ...)                                                    \
    DECL_FUNC(NAME, const pixel_t *restrict in0, const pixel_t *restrict in1,   \
                    const pixel_t *restrict in2, const pixel_t *restrict in3,   \
                    __VA_ARGS__)

#define DECL_WRITE(NAME, ...)                                                   \
    DECL_FUNC(NAME, pixel_t *restrict out0, pixel_t *restrict out1,             \
                    pixel_t *restrict out2, pixel_t *restrict out3,             \
                    __VA_ARGS__)

/* Helper macros to call into functions declared with DECL_FUNC_* */
#define CALL(FUNC, ...) \
    fn(FUNC)(iter, impl, x, y, z, w, __VA_ARGS__)

#define CALL_READ(FUNC, ...)                                                    \
    CALL(FUNC, (const pixel_t *) iter->in[0], (const pixel_t *) iter->in[1],    \
               (const pixel_t *) iter->in[2], (const pixel_t *) iter->in[3],    \
               __VA_ARGS__)

#define CALL_WRITE(FUNC, ...)                                                   \
    CALL(FUNC, (pixel_t *) iter->out[0], (pixel_t *) iter->out[1],              \
               (pixel_t *) iter->out[2], (pixel_t *) iter->out[3], __VA_ARGS__)

/* Helper macros to declare continuation functions */
#define DECL_IMPL(FUNC, NAME, ...)                                              \
    static void av_flatten fn(NAME)(SwsOpIter *restrict iter,                   \
                                    const SwsOpImpl *restrict impl,             \
                                    void *restrict x, void *restrict y,         \
                                    void *restrict z, void *restrict w)         \
    {                                                                           \
        CALL(FUNC, __VA_ARGS__);                                                \
    }

/* Helper macro to call into the next continuation */
#define CONTINUE(X, Y, Z, W)                                                    \
    ((void (*)(SwsOpIter *, const SwsOpImpl *,                                  \
               void *restrict, void *restrict,                                  \
               void *restrict, void *restrict)) impl->cont)                     \
        (iter, &impl[1], (X), (Y), (Z), (W))

/* Helper macros for common op setup code */
#define DECL_SETUP(NAME, PARAMS, OUT)                                           \
    static int fn(NAME)(const SwsImplParams *PARAMS, SwsImplResult *OUT)

#define SETUP_MEMDUP(c, out) ff_setup_memdup(&(c), sizeof(c), out)
static inline int ff_setup_memdup(const void *c, size_t size, SwsImplResult *out)
{
    out->priv.ptr = av_memdup(c, size);
    out->free = ff_op_priv_free;
    return out->priv.ptr ? 0 : AVERROR(ENOMEM);
}

/* Helper macro for declaring op table entries */
#define DECL_ENTRY(NAME, MASK, ...)                                             \
    static const SwsOpEntry fn(op_##NAME) = {                                   \
        .func = (SwsFuncPtr) fn(NAME),                                          \
        .type = PIXEL_TYPE,                                                     \
        .mask = (MASK),                                                         \
        __VA_ARGS__                                                             \
    }

/* Helpers to define functions for common subsets of components */
#define DECL_PATTERN(NAME) \
    DECL_FUNC(NAME, const bool X, const bool Y, const bool Z, const bool W)

#define WRAP_PATTERN(FUNC, X, Y, Z, W, ...)                                     \
    DECL_IMPL(FUNC, FUNC##_##X##Y##Z##W, X, Y, Z, W)                            \
    DECL_ENTRY(FUNC##_##X##Y##Z##W, SWS_COMP_MASK(X, Y, Z, W), __VA_ARGS__)

#define WRAP_COMMON_PATTERNS(FUNC, ...)                                         \
    WRAP_PATTERN(FUNC, 1, 0, 0, 0, __VA_ARGS__);                                \
    WRAP_PATTERN(FUNC, 1, 0, 0, 1, __VA_ARGS__);                                \
    WRAP_PATTERN(FUNC, 1, 1, 1, 0, __VA_ARGS__);                                \
    WRAP_PATTERN(FUNC, 1, 1, 1, 1, __VA_ARGS__)

#define REF_COMMON_PATTERNS(NAME)                                               \
    &fn(op_##NAME##_1000),                                                      \
    &fn(op_##NAME##_1001),                                                      \
    &fn(op_##NAME##_1110),                                                      \
    &fn(op_##NAME##_1111)

#endif

Line	Count	Source
1		/**
2		* Copyright (C) 2025 Niklas Haas
3		*
4		* This file is part of FFmpeg.
5		*
6		* FFmpeg is free software; you can redistribute it and/or
7		* modify it under the terms of the GNU Lesser General Public
8		* License as published by the Free Software Foundation; either
9		* version 2.1 of the License, or (at your option) any later version.
10		*
11		* FFmpeg is distributed in the hope that it will be useful,
12		* but WITHOUT ANY WARRANTY; without even the implied warranty of
13		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14		* Lesser General Public License for more details.
15		*
16		* You should have received a copy of the GNU Lesser General Public
17		* License along with FFmpeg; if not, write to the Free Software
18		* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19		*/
20
21		#ifndef SWSCALE_OPS_BACKEND_H
22		#define SWSCALE_OPS_BACKEND_H
23
24		/**
25		* Helper macros for the C-based backend.
26		*
27		* To use these macros, the following types must be defined:
28		* - PIXEL_TYPE should be one of SWS_PIXEL_*
29		* - pixel_t should be the type of pixels
30		* - block_t should be the type of blocks (groups of pixels)
31		*/
32
33		#include <assert.h>
34		#include <float.h>
35		#include <stdint.h>
36
37		#include "libavutil/attributes.h"
38		#include "libavutil/mem.h"
39
40		#include "ops_chain.h"
41
42		/**
43		* Internal context holding per-iter execution data. The data pointers will be
44		* directly incremented by the corresponding read/write functions.
45		*/
46		typedef struct SwsOpIter {
47		uintptr_t in[4];
48		uintptr_t out[4];
49		int x, y;
50
51		/* Link back to per-slice execution context */
52		const SwsOpExec *exec;
53		} SwsOpIter;
54
55		#ifdef __clang__
56	0	# define SWS_LOOP AV_PRAGMA(clang loop vectorize(assume_safety))
57		#elif defined(__GNUC__)
58		# define SWS_LOOP AV_PRAGMA(GCC ivdep)
59		#else
60		# define SWS_LOOP
61		#endif
62
63		/* Miscellaneous helpers */
64	0	#define bitfn2(name, ext) name ## _ ## ext
65	0	#define bitfn(name, ext) bitfn2(name, ext)
66
67		#define FN_SUFFIX AV_JOIN(FMT_CHAR, BIT_DEPTH)
68	0	#define fn(name) bitfn(name, FN_SUFFIX)
69
70	0	#define av_q2pixel(q) ((q).den ? (pixel_t) (q).num / (q).den : 0)
71	0	#define bump_ptr(ptr, bump) ((pixel_t *) ((uintptr_t) (ptr) + (bump)))
72
73		/* Helper macros to make writing common function signatures less painful */
74		#define DECL_FUNC(NAME, ...) \
75		static av_always_inline void fn(NAME)(SwsOpIter *restrict iter, \
76		const SwsOpImpl *restrict impl, \
77		block_t x, block_t y, \
78		block_t z, block_t w, \
79		__VA_ARGS__)
80
81		#define DECL_READ(NAME, ...) \
82		DECL_FUNC(NAME, const pixel_t restrict in0, const pixel_t restrict in1, \
83		const pixel_t restrict in2, const pixel_t restrict in3, \
84		__VA_ARGS__)
85
86		#define DECL_WRITE(NAME, ...) \
87		DECL_FUNC(NAME, pixel_t restrict out0, pixel_t restrict out1, \
88		pixel_t restrict out2, pixel_t restrict out3, \
89		__VA_ARGS__)
90
91		/* Helper macros to call into functions declared with DECL_FUNC_* */
92		#define CALL(FUNC, ...) \
93	0	fn(FUNC)(iter, impl, x, y, z, w, __VA_ARGS__)
94
95		#define CALL_READ(FUNC, ...) \
96	0	CALL(FUNC, (const pixel_t ) iter->in[0], (const pixel_t ) iter->in[1], \
97	0	(const pixel_t ) iter->in[2], (const pixel_t ) iter->in[3], \
98	0	__VA_ARGS__)
99
100		#define CALL_WRITE(FUNC, ...) \
101	0	CALL(FUNC, (pixel_t ) iter->out[0], (pixel_t ) iter->out[1], \
102	0	(pixel_t ) iter->out[2], (pixel_t ) iter->out[3], __VA_ARGS__)
103
104		/* Helper macros to declare continuation functions */
105		#define DECL_IMPL(FUNC, NAME, ...) \
106		static void av_flatten fn(NAME)(SwsOpIter *restrict iter, \
107		const SwsOpImpl *restrict impl, \
108		void restrict x, void restrict y, \
109		void restrict z, void restrict w) \
110	0	{ \
111	0	CALL(FUNC, __VA_ARGS__); \
112	0	} Unexecuted instantiation: ops_backend.c:pack_1210_u8 Unexecuted instantiation: ops_backend.c:pack_2330_u8 Unexecuted instantiation: ops_backend.c:pack_3320_u8 Unexecuted instantiation: ops_backend.c:unpack_1210_u8 Unexecuted instantiation: ops_backend.c:unpack_2330_u8 Unexecuted instantiation: ops_backend.c:unpack_3320_u8 Unexecuted instantiation: ops_backend.c:expand16_1000_u8 Unexecuted instantiation: ops_backend.c:expand16_1001_u8 Unexecuted instantiation: ops_backend.c:expand16_1110_u8 Unexecuted instantiation: ops_backend.c:expand16_1111_u8 Unexecuted instantiation: ops_backend.c:expand32_1000_u8 Unexecuted instantiation: ops_backend.c:expand32_1001_u8 Unexecuted instantiation: ops_backend.c:expand32_1110_u8 Unexecuted instantiation: ops_backend.c:expand32_1111_u8 Unexecuted instantiation: ops_backend.c:min_1000_u8 Unexecuted instantiation: ops_backend.c:min_1001_u8 Unexecuted instantiation: ops_backend.c:min_1110_u8 Unexecuted instantiation: ops_backend.c:min_1111_u8 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instantiation: ops_backend.c:convert_uint16_1111_f32 Unexecuted instantiation: ops_backend.c:convert_uint32_1000_f32 Unexecuted instantiation: ops_backend.c:convert_uint32_1001_f32 Unexecuted instantiation: ops_backend.c:convert_uint32_1110_f32 Unexecuted instantiation: ops_backend.c:convert_uint32_1111_f32 Unexecuted instantiation: ops_backend.c:clear_0001_f32 Unexecuted instantiation: ops_backend.c:min_1000_f32 Unexecuted instantiation: ops_backend.c:min_1001_f32 Unexecuted instantiation: ops_backend.c:min_1110_f32 Unexecuted instantiation: ops_backend.c:min_1111_f32 Unexecuted instantiation: ops_backend.c:max_1000_f32 Unexecuted instantiation: ops_backend.c:max_1001_f32 Unexecuted instantiation: ops_backend.c:max_1110_f32 Unexecuted instantiation: ops_backend.c:max_1111_f32 Unexecuted instantiation: ops_backend.c:scale_1000_f32 Unexecuted instantiation: ops_backend.c:scale_1001_f32 Unexecuted instantiation: ops_backend.c:scale_1110_f32 Unexecuted instantiation: ops_backend.c:scale_1111_f32 Unexecuted instantiation: ops_backend.c:dither0_f32 Unexecuted instantiation: ops_backend.c:dither1_f32 Unexecuted instantiation: ops_backend.c:dither2_f32 Unexecuted instantiation: ops_backend.c:dither3_f32 Unexecuted instantiation: ops_backend.c:dither4_f32 Unexecuted instantiation: ops_backend.c:dither5_f32 Unexecuted instantiation: ops_backend.c:dither6_f32 Unexecuted instantiation: ops_backend.c:dither7_f32 Unexecuted instantiation: ops_backend.c:dither8_f32 Unexecuted instantiation: ops_backend.c:clear_1000_f32 Unexecuted instantiation: ops_backend.c:clear_1100_f32 Unexecuted instantiation: ops_backend.c:linear_luma_f32 Unexecuted instantiation: ops_backend.c:linear_alpha_f32 Unexecuted instantiation: ops_backend.c:linear_lumalpha_f32 Unexecuted instantiation: ops_backend.c:linear_yalpha_f32 Unexecuted instantiation: ops_backend.c:linear_dot3_f32 Unexecuted instantiation: ops_backend.c:linear_dot3a_f32 Unexecuted instantiation: ops_backend.c:linear_row0_f32 Unexecuted instantiation: ops_backend.c:linear_diag3_f32 Unexecuted instantiation: ops_backend.c:linear_diag4_f32 Unexecuted instantiation: ops_backend.c:linear_diagoff3_f32 Unexecuted instantiation: ops_backend.c:linear_affine3_f32 Unexecuted instantiation: ops_backend.c:linear_affine3uv_f32 Unexecuted instantiation: ops_backend.c:linear_affine3x_f32 Unexecuted instantiation: ops_backend.c:linear_affine3xa_f32 Unexecuted instantiation: ops_backend.c:linear_affine3xy_f32 Unexecuted instantiation: ops_backend.c:linear_affine3a_f32 Unexecuted instantiation: ops_backend.c:pack_5650_u8 Unexecuted instantiation: ops_backend.c:unpack_5650_u8 Unexecuted instantiation: ops_backend.c:pack_5550_u8 Unexecuted instantiation: ops_backend.c:unpack_5550_u8 Unexecuted instantiation: ops_backend.c:pack_4440_u8 Unexecuted instantiation: ops_backend.c:unpack_4440_u8 Unexecuted instantiation: ops_backend.c:pack_2101010_u8 Unexecuted instantiation: ops_backend.c:unpack_2101010_u8 Unexecuted instantiation: ops_backend.c:pack_1010102_u8 Unexecuted instantiation: ops_backend.c:unpack_1010102_u8 Unexecuted instantiation: ops_backend.c:pack_3320_u16 Unexecuted instantiation: ops_backend.c:unpack_3320_u16 Unexecuted instantiation: ops_backend.c:pack_2330_u16 Unexecuted instantiation: ops_backend.c:unpack_2330_u16 Unexecuted instantiation: ops_backend.c:pack_1210_u16 Unexecuted instantiation: ops_backend.c:unpack_1210_u16 Unexecuted instantiation: ops_backend.c:pack_2101010_u16 Unexecuted instantiation: ops_backend.c:unpack_2101010_u16 Unexecuted instantiation: ops_backend.c:pack_1010102_u16 Unexecuted instantiation: ops_backend.c:unpack_1010102_u16 Unexecuted instantiation: ops_backend.c:convert_uint32_1000_u32 Unexecuted instantiation: ops_backend.c:convert_uint32_1001_u32 Unexecuted instantiation: ops_backend.c:convert_uint32_1110_u32 Unexecuted instantiation: ops_backend.c:convert_uint32_1111_u32 Unexecuted instantiation: ops_backend.c:pack_3320_u32 Unexecuted instantiation: ops_backend.c:unpack_3320_u32 Unexecuted instantiation: ops_backend.c:pack_2330_u32 Unexecuted instantiation: ops_backend.c:unpack_2330_u32 Unexecuted instantiation: ops_backend.c:pack_1210_u32 Unexecuted instantiation: ops_backend.c:unpack_1210_u32 Unexecuted instantiation: ops_backend.c:pack_5650_u32 Unexecuted instantiation: ops_backend.c:unpack_5650_u32 Unexecuted instantiation: ops_backend.c:pack_5550_u32 Unexecuted instantiation: ops_backend.c:unpack_5550_u32 Unexecuted instantiation: ops_backend.c:pack_4440_u32 Unexecuted instantiation: ops_backend.c:unpack_4440_u32 Unexecuted instantiation: ops_backend.c:clear_0100_f32 Unexecuted instantiation: ops_backend.c:clear_0110_f32 Unexecuted instantiation: ops_backend.c:clear_0011_f32 Unexecuted instantiation: ops_backend.c:clear_1010_f32 Unexecuted instantiation: ops_backend.c:clear_0101_f32 Unexecuted instantiation: ops_backend.c:clear_0111_f32 Unexecuted instantiation: ops_backend.c:clear_1011_f32 Unexecuted instantiation: ops_backend.c:clear_1101_f32
113
114		/* Helper macro to call into the next continuation */
115		#define CONTINUE(X, Y, Z, W) \
116	0	((void ()(SwsOpIter , const SwsOpImpl *, \
117	0	void restrict, void restrict, \
118	0	void restrict, void restrict)) impl->cont) \
119	0	(iter, &impl[1], (X), (Y), (Z), (W))
120
121		/* Helper macros for common op setup code */
122		#define DECL_SETUP(NAME, PARAMS, OUT) \
123		static int fn(NAME)(const SwsImplParams PARAMS, SwsImplResult OUT)
124
125	0	#define SETUP_MEMDUP(c, out) ff_setup_memdup(&(c), sizeof(c), out)
126		static inline int ff_setup_memdup(const void c, size_t size, SwsImplResult out)
127	0	{
128	0	out->priv.ptr = av_memdup(c, size);
129	0	out->free = ff_op_priv_free;
130	0	return out->priv.ptr ? 0 : AVERROR(ENOMEM);
131	0	} Unexecuted instantiation: ops_backend.c:ff_setup_memdup Unexecuted instantiation: ops_memcpy.c:ff_setup_memdup
132
133		/* Helper macro for declaring op table entries */
134		#define DECL_ENTRY(NAME, MASK, ...) \
135		static const SwsOpEntry fn(op_##NAME) = { \
136		.func = (SwsFuncPtr) fn(NAME), \
137		.type = PIXEL_TYPE, \
138		.mask = (MASK), \
139		__VA_ARGS__ \
140		}
141
142		/* Helpers to define functions for common subsets of components */
143		#define DECL_PATTERN(NAME) \
144		DECL_FUNC(NAME, const bool X, const bool Y, const bool Z, const bool W)
145
146		#define WRAP_PATTERN(FUNC, X, Y, Z, W, ...) \
147		DECL_IMPL(FUNC, FUNC##_##X##Y##Z##W, X, Y, Z, W) \
148		DECL_ENTRY(FUNC##_##X##Y##Z##W, SWS_COMP_MASK(X, Y, Z, W), __VA_ARGS__)
149
150		#define WRAP_COMMON_PATTERNS(FUNC, ...) \
151		WRAP_PATTERN(FUNC, 1, 0, 0, 0, __VA_ARGS__); \
152		WRAP_PATTERN(FUNC, 1, 0, 0, 1, __VA_ARGS__); \
153		WRAP_PATTERN(FUNC, 1, 1, 1, 0, __VA_ARGS__); \
154		WRAP_PATTERN(FUNC, 1, 1, 1, 1, __VA_ARGS__)
155
156		#define REF_COMMON_PATTERNS(NAME) \
157		&fn(op_##NAME##_1000), \
158		&fn(op_##NAME##_1001), \
159		&fn(op_##NAME##_1110), \
160		&fn(op_##NAME##_1111)
161
162		#endif

Coverage Report

Created: 2026-04-29 07:00