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n8.2-dev
libswscale/x86/ops.c
769 строк
41 KB
Niklas Haas
swscale/ops_dispatch: move on-stack mutation to ops backends
06 мар 2026, 02:34
06 мар 2026, 02:34
4b5122b
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/** * 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 */ #include <float.h> #include "libavutil/avassert.h" #include "libavutil/mem.h" #include "../ops_chain.h" #define DECL_ENTRY(TYPE, NAME, ...) \ static const SwsOpEntry op_##NAME = { \ .type = SWS_PIXEL_##TYPE, \ __VA_ARGS__ \ } #define DECL_ASM(TYPE, NAME, ...) \ void ff_##NAME(void); \ DECL_ENTRY(TYPE, NAME, \ .func = ff_##NAME, \ __VA_ARGS__) #define DECL_PATTERN(TYPE, NAME, X, Y, Z, W, ...) \ DECL_ASM(TYPE, p##X##Y##Z##W##_##NAME, \ .unused = { !X, !Y, !Z, !W }, \ __VA_ARGS__ \ ) #define REF_PATTERN(NAME, X, Y, Z, W) \ &op_p##X##Y##Z##W##_##NAME #define DECL_COMMON_PATTERNS(TYPE, NAME, ...) \ DECL_PATTERN(TYPE, NAME, 1, 0, 0, 0, __VA_ARGS__); \ DECL_PATTERN(TYPE, NAME, 1, 0, 0, 1, __VA_ARGS__); \ DECL_PATTERN(TYPE, NAME, 1, 1, 1, 0, __VA_ARGS__); \ DECL_PATTERN(TYPE, NAME, 1, 1, 1, 1, __VA_ARGS__) \ #define REF_COMMON_PATTERNS(NAME) \ REF_PATTERN(NAME, 1, 0, 0, 0), \ REF_PATTERN(NAME, 1, 0, 0, 1), \ REF_PATTERN(NAME, 1, 1, 1, 0), \ REF_PATTERN(NAME, 1, 1, 1, 1) #define DECL_RW(EXT, TYPE, NAME, OP, ELEMS, PACKED, FRAC) \ DECL_ASM(TYPE, NAME##ELEMS##EXT, \ .op = SWS_OP_##OP, \ .rw = { .elems = ELEMS, .packed = PACKED, .frac = FRAC }, \ ); #define DECL_PACKED_RW(EXT, DEPTH) \ DECL_RW(EXT, U##DEPTH, read##DEPTH##_packed, READ, 2, true, 0) \ DECL_RW(EXT, U##DEPTH, read##DEPTH##_packed, READ, 3, true, 0) \ DECL_RW(EXT, U##DEPTH, read##DEPTH##_packed, READ, 4, true, 0) \ DECL_RW(EXT, U##DEPTH, write##DEPTH##_packed, WRITE, 2, true, 0) \ DECL_RW(EXT, U##DEPTH, write##DEPTH##_packed, WRITE, 3, true, 0) \ DECL_RW(EXT, U##DEPTH, write##DEPTH##_packed, WRITE, 4, true, 0) \ #define DECL_PACK_UNPACK(EXT, TYPE, X, Y, Z, W) \ DECL_ASM(TYPE, pack_##X##Y##Z##W##EXT, \ .op = SWS_OP_PACK, \ .pack.pattern = {X, Y, Z, W}, \ ); \ \ DECL_ASM(TYPE, unpack_##X##Y##Z##W##EXT, \ .op = SWS_OP_UNPACK, \ .pack.pattern = {X, Y, Z, W}, \ ); \ static int setup_swap_bytes(const SwsOp *op, SwsOpPriv *out) { const int mask = ff_sws_pixel_type_size(op->type) - 1; for (int i = 0; i < 16; i++) out->u8[i] = (i & ~mask) | (mask - (i & mask)); return 0; } #define DECL_SWAP_BYTES(EXT, TYPE, X, Y, Z, W) \ DECL_ENTRY(TYPE, p##X##Y##Z##W##_swap_bytes_##TYPE##EXT, \ .op = SWS_OP_SWAP_BYTES, \ .unused = { !X, !Y, !Z, !W }, \ .func = ff_p##X##Y##Z##W##_shuffle##EXT, \ .setup = setup_swap_bytes, \ ); #define DECL_CLEAR_ALPHA(EXT, IDX) \ DECL_ASM(U8, clear_alpha##IDX##EXT, \ .op = SWS_OP_CLEAR, \ .clear_value = -1, \ .unused[IDX] = true, \ ); \ #define DECL_CLEAR_ZERO(EXT, IDX) \ DECL_ASM(U8, clear_zero##IDX##EXT, \ .op = SWS_OP_CLEAR, \ .clear_value = 0, \ .unused[IDX] = true, \ ); static int setup_clear(const SwsOp *op, SwsOpPriv *out) { for (int i = 0; i < 4; i++) out->u32[i] = (uint32_t) op->c.q4[i].num; return 0; } #define DECL_CLEAR(EXT, X, Y, Z, W) \ DECL_PATTERN(U8, clear##EXT, X, Y, Z, W, \ .op = SWS_OP_CLEAR, \ .setup = setup_clear, \ .flexible = true, \ ); #define DECL_SWIZZLE(EXT, X, Y, Z, W) \ DECL_ASM(U8, swizzle_##X##Y##Z##W##EXT, \ .op = SWS_OP_SWIZZLE, \ .swizzle.in = {X, Y, Z, W}, \ ); #define DECL_CONVERT(EXT, FROM, TO) \ DECL_COMMON_PATTERNS(FROM, convert_##FROM##_##TO##EXT, \ .op = SWS_OP_CONVERT, \ .convert.to = SWS_PIXEL_##TO, \ ); #define DECL_EXPAND(EXT, FROM, TO) \ DECL_COMMON_PATTERNS(FROM, expand_##FROM##_##TO##EXT, \ .op = SWS_OP_CONVERT, \ .convert.to = SWS_PIXEL_##TO, \ .convert.expand = true, \ ); static int setup_shift(const SwsOp *op, SwsOpPriv *out) { out->u16[0] = op->c.u; return 0; } #define DECL_SHIFT16(EXT) \ DECL_COMMON_PATTERNS(U16, lshift16##EXT, \ .op = SWS_OP_LSHIFT, \ .setup = setup_shift, \ .flexible = true, \ ); \ \ DECL_COMMON_PATTERNS(U16, rshift16##EXT, \ .op = SWS_OP_RSHIFT, \ .setup = setup_shift, \ .flexible = true, \ ); #define DECL_MIN_MAX(EXT) \ DECL_COMMON_PATTERNS(F32, min##EXT, \ .op = SWS_OP_MIN, \ .setup = ff_sws_setup_q4, \ .flexible = true, \ ); \ \ DECL_COMMON_PATTERNS(F32, max##EXT, \ .op = SWS_OP_MAX, \ .setup = ff_sws_setup_q4, \ .flexible = true, \ ); #define DECL_SCALE(EXT) \ DECL_COMMON_PATTERNS(F32, scale##EXT, \ .op = SWS_OP_SCALE, \ .setup = ff_sws_setup_q, \ .flexible = true, \ ); #define DECL_EXPAND_BITS(EXT, BITS) \ DECL_ASM(U##BITS, expand_bits##BITS##EXT, \ .op = SWS_OP_SCALE, \ .scale = { .num = ((1 << (BITS)) - 1), .den = 1 }, \ ); static int setup_dither(const SwsOp *op, SwsOpPriv *out) { /* 1x1 matrix / single constant */ if (!op->dither.size_log2) { const AVRational k = op->dither.matrix[0]; out->f32[0] = (float) k.num / k.den; return 0; } const int size = 1 << op->dither.size_log2; const int8_t *off = op->dither.y_offset; int max_offset = 0; for (int i = 0; i < 4; i++) { if (off[i] >= 0) max_offset = FFMAX(max_offset, off[i] & (size - 1)); } /* Allocate extra rows to allow over-reading for row offsets. Note that * max_offset is currently never larger than 5, so the extra space needed * for this over-allocation is bounded by 5 * size * sizeof(float), * typically 320 bytes for a 16x16 dither matrix. */ const int stride = size * sizeof(float); const int num_rows = size + max_offset; float *matrix = out->ptr = av_mallocz(num_rows * stride); if (!matrix) return AVERROR(ENOMEM); for (int i = 0; i < size * size; i++) matrix[i] = (float) op->dither.matrix[i].num / op->dither.matrix[i].den; memcpy(&matrix[size * size], matrix, max_offset * stride); /* Store relative pointer offset to each row inside extra space */ static_assert(sizeof(out->ptr) <= sizeof(int16_t[4]), ">8 byte pointers not supported"); assert(max_offset * stride <= INT16_MAX); int16_t *off_out = &out->i16[4]; for (int i = 0; i < 4; i++) off_out[i] = off[i] >= 0 ? (off[i] & (size - 1)) * stride : -1; return 0; } #define DECL_DITHER(DECL_MACRO, EXT, SIZE) \ DECL_MACRO(F32, dither##SIZE##EXT, \ .op = SWS_OP_DITHER, \ .setup = setup_dither, \ .free = (SIZE) ? av_free : NULL, \ .dither_size = SIZE, \ ); static int setup_linear(const SwsOp *op, SwsOpPriv *out) { float *matrix = out->ptr = av_mallocz(sizeof(float[4][5])); if (!matrix) return AVERROR(ENOMEM); for (int y = 0; y < 4; y++) { for (int x = 0; x < 5; x++) matrix[y * 5 + x] = (float) op->lin.m[y][x].num / op->lin.m[y][x].den; } return 0; } #define DECL_LINEAR(EXT, NAME, MASK) \ DECL_ASM(F32, NAME##EXT, \ .op = SWS_OP_LINEAR, \ .setup = setup_linear, \ .free = av_free, \ .linear_mask = (MASK), \ ); #define DECL_FUNCS_8(SIZE, EXT, FLAG) \ DECL_RW(EXT, U8, read_planar, READ, 1, false, 0) \ DECL_RW(EXT, U8, read_planar, READ, 2, false, 0) \ DECL_RW(EXT, U8, read_planar, READ, 3, false, 0) \ DECL_RW(EXT, U8, read_planar, READ, 4, false, 0) \ DECL_RW(EXT, U8, write_planar, WRITE, 1, false, 0) \ DECL_RW(EXT, U8, write_planar, WRITE, 2, false, 0) \ DECL_RW(EXT, U8, write_planar, WRITE, 3, false, 0) \ DECL_RW(EXT, U8, write_planar, WRITE, 4, false, 0) \ DECL_RW(EXT, U8, read_nibbles, READ, 1, false, 1) \ DECL_RW(EXT, U8, read_bits, READ, 1, false, 3) \ DECL_RW(EXT, U8, write_bits, WRITE, 1, false, 3) \ DECL_EXPAND_BITS(EXT, 8) \ DECL_PACKED_RW(EXT, 8) \ DECL_PACK_UNPACK(EXT, U8, 1, 2, 1, 0) \ DECL_PACK_UNPACK(EXT, U8, 3, 3, 2, 0) \ DECL_PACK_UNPACK(EXT, U8, 2, 3, 3, 0) \ void ff_p1000_shuffle##EXT(void); \ void ff_p1001_shuffle##EXT(void); \ void ff_p1110_shuffle##EXT(void); \ void ff_p1111_shuffle##EXT(void); \ DECL_SWIZZLE(EXT, 3, 0, 1, 2) \ DECL_SWIZZLE(EXT, 3, 0, 2, 1) \ DECL_SWIZZLE(EXT, 2, 1, 0, 3) \ DECL_SWIZZLE(EXT, 3, 2, 1, 0) \ DECL_SWIZZLE(EXT, 3, 1, 0, 2) \ DECL_SWIZZLE(EXT, 3, 2, 0, 1) \ DECL_SWIZZLE(EXT, 1, 2, 0, 3) \ DECL_SWIZZLE(EXT, 1, 0, 2, 3) \ DECL_SWIZZLE(EXT, 2, 0, 1, 3) \ DECL_SWIZZLE(EXT, 2, 3, 1, 0) \ DECL_SWIZZLE(EXT, 2, 1, 3, 0) \ DECL_SWIZZLE(EXT, 1, 2, 3, 0) \ DECL_SWIZZLE(EXT, 1, 3, 2, 0) \ DECL_SWIZZLE(EXT, 0, 2, 1, 3) \ DECL_SWIZZLE(EXT, 0, 2, 3, 1) \ DECL_SWIZZLE(EXT, 0, 3, 1, 2) \ DECL_SWIZZLE(EXT, 3, 1, 2, 0) \ DECL_SWIZZLE(EXT, 0, 3, 2, 1) \ DECL_SWIZZLE(EXT, 0, 0, 0, 3) \ DECL_SWIZZLE(EXT, 3, 0, 0, 0) \ DECL_SWIZZLE(EXT, 0, 0, 0, 1) \ DECL_SWIZZLE(EXT, 1, 0, 0, 0) \ DECL_CLEAR_ALPHA(EXT, 0) \ DECL_CLEAR_ALPHA(EXT, 1) \ DECL_CLEAR_ALPHA(EXT, 3) \ DECL_CLEAR_ZERO(EXT, 0) \ DECL_CLEAR_ZERO(EXT, 1) \ DECL_CLEAR_ZERO(EXT, 3) \ DECL_CLEAR(EXT, 1, 1, 1, 0) \ DECL_CLEAR(EXT, 0, 1, 1, 1) \ DECL_CLEAR(EXT, 0, 0, 1, 1) \ DECL_CLEAR(EXT, 1, 0, 0, 1) \ DECL_CLEAR(EXT, 1, 1, 0, 0) \ DECL_CLEAR(EXT, 0, 1, 0, 1) \ DECL_CLEAR(EXT, 1, 0, 1, 0) \ DECL_CLEAR(EXT, 1, 0, 0, 0) \ DECL_CLEAR(EXT, 0, 1, 0, 0) \ DECL_CLEAR(EXT, 0, 0, 1, 0) \ \ static const SwsOpTable ops8##EXT = { \ .cpu_flags = AV_CPU_FLAG_##FLAG, \ .block_size = SIZE, \ .entries = { \ &op_read_planar1##EXT, \ &op_read_planar2##EXT, \ &op_read_planar3##EXT, \ &op_read_planar4##EXT, \ &op_write_planar1##EXT, \ &op_write_planar2##EXT, \ &op_write_planar3##EXT, \ &op_write_planar4##EXT, \ &op_read8_packed2##EXT, \ &op_read8_packed3##EXT, \ &op_read8_packed4##EXT, \ &op_write8_packed2##EXT, \ &op_write8_packed3##EXT, \ &op_write8_packed4##EXT, \ &op_read_nibbles1##EXT, \ &op_read_bits1##EXT, \ &op_write_bits1##EXT, \ &op_expand_bits8##EXT, \ &op_pack_1210##EXT, \ &op_pack_3320##EXT, \ &op_pack_2330##EXT, \ &op_unpack_1210##EXT, \ &op_unpack_3320##EXT, \ &op_unpack_2330##EXT, \ &op_swizzle_3012##EXT, \ &op_swizzle_3021##EXT, \ &op_swizzle_2103##EXT, \ &op_swizzle_3210##EXT, \ &op_swizzle_3102##EXT, \ &op_swizzle_3201##EXT, \ &op_swizzle_1203##EXT, \ &op_swizzle_1023##EXT, \ &op_swizzle_2013##EXT, \ &op_swizzle_2310##EXT, \ &op_swizzle_2130##EXT, \ &op_swizzle_1230##EXT, \ &op_swizzle_1320##EXT, \ &op_swizzle_0213##EXT, \ &op_swizzle_0231##EXT, \ &op_swizzle_0312##EXT, \ &op_swizzle_3120##EXT, \ &op_swizzle_0321##EXT, \ &op_swizzle_0003##EXT, \ &op_swizzle_0001##EXT, \ &op_swizzle_3000##EXT, \ &op_swizzle_1000##EXT, \ &op_clear_alpha0##EXT, \ &op_clear_alpha1##EXT, \ &op_clear_alpha3##EXT, \ &op_clear_zero0##EXT, \ &op_clear_zero1##EXT, \ &op_clear_zero3##EXT, \ REF_PATTERN(clear##EXT, 1, 1, 1, 0), \ REF_PATTERN(clear##EXT, 0, 1, 1, 1), \ REF_PATTERN(clear##EXT, 0, 0, 1, 1), \ REF_PATTERN(clear##EXT, 1, 0, 0, 1), \ REF_PATTERN(clear##EXT, 1, 1, 0, 0), \ REF_PATTERN(clear##EXT, 0, 1, 0, 1), \ REF_PATTERN(clear##EXT, 1, 0, 1, 0), \ REF_PATTERN(clear##EXT, 1, 0, 0, 0), \ REF_PATTERN(clear##EXT, 0, 1, 0, 0), \ REF_PATTERN(clear##EXT, 0, 0, 1, 0), \ NULL \ }, \ }; #define DECL_FUNCS_16(SIZE, EXT, FLAG) \ DECL_PACKED_RW(EXT, 16) \ DECL_EXPAND_BITS(EXT, 16) \ DECL_PACK_UNPACK(EXT, U16, 4, 4, 4, 0) \ DECL_PACK_UNPACK(EXT, U16, 5, 5, 5, 0) \ DECL_PACK_UNPACK(EXT, U16, 5, 6, 5, 0) \ DECL_SWAP_BYTES(EXT, U16, 1, 0, 0, 0) \ DECL_SWAP_BYTES(EXT, U16, 1, 0, 0, 1) \ DECL_SWAP_BYTES(EXT, U16, 1, 1, 1, 0) \ DECL_SWAP_BYTES(EXT, U16, 1, 1, 1, 1) \ DECL_SHIFT16(EXT) \ DECL_CONVERT(EXT, U8, U16) \ DECL_CONVERT(EXT, U16, U8) \ DECL_EXPAND(EXT, U8, U16) \ \ static const SwsOpTable ops16##EXT = { \ .cpu_flags = AV_CPU_FLAG_##FLAG, \ .block_size = SIZE, \ .entries = { \ &op_read16_packed2##EXT, \ &op_read16_packed3##EXT, \ &op_read16_packed4##EXT, \ &op_write16_packed2##EXT, \ &op_write16_packed3##EXT, \ &op_write16_packed4##EXT, \ &op_pack_4440##EXT, \ &op_pack_5550##EXT, \ &op_pack_5650##EXT, \ &op_unpack_4440##EXT, \ &op_unpack_5550##EXT, \ &op_unpack_5650##EXT, \ &op_expand_bits16##EXT, \ REF_COMMON_PATTERNS(swap_bytes_U16##EXT), \ REF_COMMON_PATTERNS(convert_U8_U16##EXT), \ REF_COMMON_PATTERNS(convert_U16_U8##EXT), \ REF_COMMON_PATTERNS(expand_U8_U16##EXT), \ REF_COMMON_PATTERNS(lshift16##EXT), \ REF_COMMON_PATTERNS(rshift16##EXT), \ NULL \ }, \ }; #define DECL_FUNCS_32(SIZE, EXT, FLAG) \ DECL_PACKED_RW(_m2##EXT, 32) \ DECL_PACK_UNPACK(_m2##EXT, U32, 10, 10, 10, 2) \ DECL_PACK_UNPACK(_m2##EXT, U32, 2, 10, 10, 10) \ DECL_SWAP_BYTES(_m2##EXT, U32, 1, 0, 0, 0) \ DECL_SWAP_BYTES(_m2##EXT, U32, 1, 0, 0, 1) \ DECL_SWAP_BYTES(_m2##EXT, U32, 1, 1, 1, 0) \ DECL_SWAP_BYTES(_m2##EXT, U32, 1, 1, 1, 1) \ DECL_CONVERT(EXT, U8, U32) \ DECL_CONVERT(EXT, U32, U8) \ DECL_CONVERT(EXT, U16, U32) \ DECL_CONVERT(EXT, U32, U16) \ DECL_CONVERT(EXT, U8, F32) \ DECL_CONVERT(EXT, F32, U8) \ DECL_CONVERT(EXT, U16, F32) \ DECL_CONVERT(EXT, F32, U16) \ DECL_EXPAND(EXT, U8, U32) \ DECL_MIN_MAX(EXT) \ DECL_SCALE(EXT) \ DECL_DITHER(DECL_COMMON_PATTERNS, EXT, 0) \ DECL_DITHER(DECL_ASM, EXT, 1) \ DECL_DITHER(DECL_ASM, EXT, 2) \ DECL_DITHER(DECL_ASM, EXT, 3) \ DECL_DITHER(DECL_ASM, EXT, 4) \ DECL_DITHER(DECL_ASM, EXT, 5) \ DECL_DITHER(DECL_ASM, EXT, 6) \ DECL_DITHER(DECL_ASM, EXT, 7) \ DECL_DITHER(DECL_ASM, EXT, 8) \ DECL_LINEAR(EXT, luma, SWS_MASK_LUMA) \ DECL_LINEAR(EXT, alpha, SWS_MASK_ALPHA) \ DECL_LINEAR(EXT, lumalpha, SWS_MASK_LUMA | SWS_MASK_ALPHA) \ DECL_LINEAR(EXT, dot3, 0x7) \ DECL_LINEAR(EXT, row0, SWS_MASK_ROW(0)) \ DECL_LINEAR(EXT, row0a, SWS_MASK_ROW(0) | SWS_MASK_ALPHA) \ DECL_LINEAR(EXT, diag3, SWS_MASK_DIAG3) \ DECL_LINEAR(EXT, diag4, SWS_MASK_DIAG4) \ DECL_LINEAR(EXT, diagoff3, SWS_MASK_DIAG3 | SWS_MASK_OFF3) \ DECL_LINEAR(EXT, matrix3, SWS_MASK_MAT3) \ DECL_LINEAR(EXT, affine3, SWS_MASK_MAT3 | SWS_MASK_OFF3) \ DECL_LINEAR(EXT, affine3a, SWS_MASK_MAT3 | SWS_MASK_OFF3 | SWS_MASK_ALPHA) \ DECL_LINEAR(EXT, matrix4, SWS_MASK_MAT4) \ DECL_LINEAR(EXT, affine4, SWS_MASK_MAT4 | SWS_MASK_OFF4) \ \ static const SwsOpTable ops32##EXT = { \ .cpu_flags = AV_CPU_FLAG_##FLAG, \ .block_size = SIZE, \ .entries = { \ &op_read32_packed2_m2##EXT, \ &op_read32_packed3_m2##EXT, \ &op_read32_packed4_m2##EXT, \ &op_write32_packed2_m2##EXT, \ &op_write32_packed3_m2##EXT, \ &op_write32_packed4_m2##EXT, \ &op_pack_1010102_m2##EXT, \ &op_pack_2101010_m2##EXT, \ &op_unpack_1010102_m2##EXT, \ &op_unpack_2101010_m2##EXT, \ REF_COMMON_PATTERNS(swap_bytes_U32_m2##EXT), \ REF_COMMON_PATTERNS(convert_U8_U32##EXT), \ REF_COMMON_PATTERNS(convert_U32_U8##EXT), \ REF_COMMON_PATTERNS(convert_U16_U32##EXT), \ REF_COMMON_PATTERNS(convert_U32_U16##EXT), \ REF_COMMON_PATTERNS(convert_U8_F32##EXT), \ REF_COMMON_PATTERNS(convert_F32_U8##EXT), \ REF_COMMON_PATTERNS(convert_U16_F32##EXT), \ REF_COMMON_PATTERNS(convert_F32_U16##EXT), \ REF_COMMON_PATTERNS(expand_U8_U32##EXT), \ REF_COMMON_PATTERNS(min##EXT), \ REF_COMMON_PATTERNS(max##EXT), \ REF_COMMON_PATTERNS(scale##EXT), \ REF_COMMON_PATTERNS(dither0##EXT), \ &op_dither1##EXT, \ &op_dither2##EXT, \ &op_dither3##EXT, \ &op_dither4##EXT, \ &op_dither5##EXT, \ &op_dither6##EXT, \ &op_dither7##EXT, \ &op_dither8##EXT, \ &op_luma##EXT, \ &op_alpha##EXT, \ &op_lumalpha##EXT, \ &op_dot3##EXT, \ &op_row0##EXT, \ &op_row0a##EXT, \ &op_diag3##EXT, \ &op_diag4##EXT, \ &op_diagoff3##EXT, \ &op_matrix3##EXT, \ &op_affine3##EXT, \ &op_affine3a##EXT, \ &op_matrix4##EXT, \ &op_affine4##EXT, \ NULL \ }, \ }; DECL_FUNCS_8(16, _m1_sse4, SSE4) DECL_FUNCS_8(32, _m1_avx2, AVX2) DECL_FUNCS_8(32, _m2_sse4, SSE4) DECL_FUNCS_8(64, _m2_avx2, AVX2) DECL_FUNCS_16(16, _m1_avx2, AVX2) DECL_FUNCS_16(32, _m2_avx2, AVX2) DECL_FUNCS_32(16, _avx2, AVX2) static const SwsOpTable *const tables[] = { &ops8_m1_sse4, &ops8_m1_avx2, &ops8_m2_sse4, &ops8_m2_avx2, &ops16_m1_avx2, &ops16_m2_avx2, &ops32_avx2, }; static av_const int get_mmsize(const int cpu_flags) { if (cpu_flags & AV_CPU_FLAG_AVX512) return 64; else if (cpu_flags & AV_CPU_FLAG_AVX2) return 32; else if (cpu_flags & AV_CPU_FLAG_SSE4) return 16; else return AVERROR(ENOTSUP); } /** * Returns true if the operation's implementation only depends on the block * size, and not the underlying pixel type */ static bool op_is_type_invariant(const SwsOp *op) { switch (op->op) { case SWS_OP_READ: case SWS_OP_WRITE: return !(op->rw.elems > 1 && op->rw.packed) && !op->rw.frac; case SWS_OP_SWIZZLE: case SWS_OP_CLEAR: return true; } return false; } static int solve_shuffle(const SwsOpList *ops, int mmsize, SwsCompiledOp *out) { uint8_t shuffle[16]; int read_bytes, write_bytes; int pixels; /* Solve the shuffle mask for one 128-bit lane only */ pixels = ff_sws_solve_shuffle(ops, shuffle, 16, 0x80, &read_bytes, &write_bytes); if (pixels < 0) return pixels; /* We can't shuffle acress lanes, so restrict the vector size to XMM * whenever the read/write size would be a subset of the full vector */ if (read_bytes < 16 || write_bytes < 16) mmsize = 16; const int num_lanes = mmsize / 16; const int in_total = num_lanes * read_bytes; const int out_total = num_lanes * write_bytes; const int read_size = in_total <= 4 ? 4 : /* movd */ in_total <= 8 ? 8 : /* movq */ mmsize; /* movu */ *out = (SwsCompiledOp) { .priv = av_memdup(shuffle, sizeof(shuffle)), .free = av_free, .slice_align = 1, .block_size = pixels * num_lanes, .over_read = read_size - in_total, .over_write = mmsize - out_total, .cpu_flags = mmsize > 32 ? AV_CPU_FLAG_AVX512 : mmsize > 16 ? AV_CPU_FLAG_AVX2 : AV_CPU_FLAG_SSE4, }; if (!out->priv) return AVERROR(ENOMEM); #define ASSIGN_SHUFFLE_FUNC(IN, OUT, EXT) \ do { \ SWS_DECL_FUNC(ff_packed_shuffle##IN##_##OUT##_##EXT); \ if (in_total == IN && out_total == OUT) \ out->func = ff_packed_shuffle##IN##_##OUT##_##EXT; \ } while (0) ASSIGN_SHUFFLE_FUNC( 5, 15, sse4); ASSIGN_SHUFFLE_FUNC( 4, 16, sse4); ASSIGN_SHUFFLE_FUNC( 2, 12, sse4); ASSIGN_SHUFFLE_FUNC(16, 8, sse4); ASSIGN_SHUFFLE_FUNC(10, 15, sse4); ASSIGN_SHUFFLE_FUNC( 8, 16, sse4); ASSIGN_SHUFFLE_FUNC( 4, 12, sse4); ASSIGN_SHUFFLE_FUNC(15, 15, sse4); ASSIGN_SHUFFLE_FUNC(12, 16, sse4); ASSIGN_SHUFFLE_FUNC( 6, 12, sse4); ASSIGN_SHUFFLE_FUNC(16, 12, sse4); ASSIGN_SHUFFLE_FUNC(16, 16, sse4); ASSIGN_SHUFFLE_FUNC( 8, 12, sse4); ASSIGN_SHUFFLE_FUNC(12, 12, sse4); ASSIGN_SHUFFLE_FUNC(32, 32, avx2); ASSIGN_SHUFFLE_FUNC(64, 64, avx512); av_assert1(out->func); return 0; } /* Normalize clear values into 32-bit integer constants */ static void normalize_clear(SwsOp *op) { static_assert(sizeof(uint32_t) == sizeof(int), "int size mismatch"); SwsOpPriv priv; union { uint32_t u32; int i; } c; ff_sws_setup_q4(op, &priv); for (int i = 0; i < 4; i++) { if (!op->c.q4[i].den) continue; switch (ff_sws_pixel_type_size(op->type)) { case 1: c.u32 = 0x1010101U * priv.u8[i]; break; case 2: c.u32 = (uint32_t)priv.u16[i] << 16 | priv.u16[i]; break; case 4: c.u32 = priv.u32[i]; break; } op->c.q4[i].num = c.i; op->c.q4[i].den = 1; } } static int compile(SwsContext *ctx, SwsOpList *ops, SwsCompiledOp *out) { const int cpu_flags = av_get_cpu_flags(); const int mmsize = get_mmsize(cpu_flags); if (mmsize < 0) return mmsize; const SwsOp *read = ff_sws_op_list_input(ops); const SwsOp *write = ff_sws_op_list_output(ops); av_assert1(write); int ret; /* Special fast path for in-place packed shuffle */ ret = solve_shuffle(ops, mmsize, out); if (ret != AVERROR(ENOTSUP)) return ret; SwsOpChain *chain = ff_sws_op_chain_alloc(); if (!chain) return AVERROR(ENOMEM); *out = (SwsCompiledOp) { .priv = chain, .slice_align = 1, .free = ff_sws_op_chain_free_cb, /* Use at most two full YMM regs during the widest precision section */ .block_size = 2 * FFMIN(mmsize, 32) / ff_sws_op_list_max_size(ops), }; /* 3-component reads/writes process one extra garbage word */ if (read && read->rw.packed && read->rw.elems == 3) out->over_read = sizeof(uint32_t); if (write->rw.packed && write->rw.elems == 3) out->over_write = sizeof(uint32_t); /* Make on-stack copy of `ops` to iterate over */ SwsOpList rest = *ops; do { int op_block_size = out->block_size; SwsOp *op = &rest.ops[0]; if (op_is_type_invariant(op)) { if (op->op == SWS_OP_CLEAR) normalize_clear(op); op_block_size *= ff_sws_pixel_type_size(op->type); op->type = SWS_PIXEL_U8; } ret = ff_sws_op_compile_tables(tables, FF_ARRAY_ELEMS(tables), &rest, op_block_size, chain); } while (ret == AVERROR(EAGAIN)); if (ret < 0) { ff_sws_op_chain_free(chain); if (rest.num_ops < ops->num_ops) { av_log(ctx, AV_LOG_TRACE, "Uncompiled remainder:\n"); ff_sws_op_list_print(ctx, AV_LOG_TRACE, AV_LOG_TRACE, &rest); } return ret; } #define ASSIGN_PROCESS_FUNC(NAME) \ do { \ SWS_DECL_FUNC(NAME); \ void NAME##_return(void); \ ret = ff_sws_op_chain_append(chain, NAME##_return, \ NULL, &(SwsOpPriv) {0}); \ out->func = NAME; \ } while (0) const int read_planes = read ? (read->rw.packed ? 1 : read->rw.elems) : 0; const int write_planes = write->rw.packed ? 1 : write->rw.elems; switch (FFMAX(read_planes, write_planes)) { case 1: ASSIGN_PROCESS_FUNC(ff_sws_process1_x86); break; case 2: ASSIGN_PROCESS_FUNC(ff_sws_process2_x86); break; case 3: ASSIGN_PROCESS_FUNC(ff_sws_process3_x86); break; case 4: ASSIGN_PROCESS_FUNC(ff_sws_process4_x86); break; } if (ret < 0) { ff_sws_op_chain_free(chain); return ret; } out->cpu_flags = chain->cpu_flags; return 0; } const SwsOpBackend backend_x86 = { .name = "x86", .compile = compile, .hw_format = AV_PIX_FMT_NONE, };