diff options
Diffstat (limited to 'media/ffvpx/libavcodec/aarch64/simple_idct_neon.S')
-rw-r--r-- | media/ffvpx/libavcodec/aarch64/simple_idct_neon.S | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/aarch64/simple_idct_neon.S b/media/ffvpx/libavcodec/aarch64/simple_idct_neon.S new file mode 100644 index 0000000000..a4438e9922 --- /dev/null +++ b/media/ffvpx/libavcodec/aarch64/simple_idct_neon.S @@ -0,0 +1,362 @@ +/* + * ARM NEON IDCT + * + * Copyright (c) 2008 Mans Rullgard <mans@mansr.com> + * Copyright (c) 2017 Matthieu Bouron <matthieu.bouron@gmail.com> + * + * Based on Simple IDCT + * Copyright (c) 2001 Michael Niedermayer <michaelni@gmx.at> + * + * 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 "libavutil/aarch64/asm.S" + +#define Z1 22725 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5 +#define Z2 21407 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5 +#define Z3 19266 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5 +#define Z4 16383 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5 +#define Z5 12873 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5 +#define Z6 8867 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5 +#define Z7 4520 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5 +#define Z4c ((1<<(COL_SHIFT-1))/Z4) +#define ROW_SHIFT 11 +#define COL_SHIFT 20 + +#define z1 v0.H[0] +#define z2 v0.H[1] +#define z3 v0.H[2] +#define z4 v0.H[3] +#define z5 v0.H[4] +#define z6 v0.H[5] +#define z7 v0.H[6] +#define z4c v0.H[7] + +const idct_coeff_neon, align=4 + .short Z1, Z2, Z3, Z4, Z5, Z6, Z7, Z4c +endconst + +.macro idct_start data + prfm pldl1keep, [\data] + mov x10, x30 + movrel x3, idct_coeff_neon + ld1 {v0.2d}, [x3] +.endm + +.macro idct_end + ret x10 +.endm + +.macro smull1 a, b, c + smull \a, \b, \c +.endm + +.macro smlal1 a, b, c + smlal \a, \b, \c +.endm + +.macro smlsl1 a, b, c + smlsl \a, \b, \c +.endm + +.macro idct_col4_top y1, y2, y3, y4, i, l + smull\i v7.4s, \y3\l, z2 + smull\i v16.4s, \y3\l, z6 + smull\i v17.4s, \y2\l, z1 + add v19.4s, v23.4s, v7.4s + smull\i v18.4s, \y2\l, z3 + add v20.4s, v23.4s, v16.4s + smull\i v5.4s, \y2\l, z5 + sub v21.4s, v23.4s, v16.4s + smull\i v6.4s, \y2\l, z7 + sub v22.4s, v23.4s, v7.4s + + smlal\i v17.4s, \y4\l, z3 + smlsl\i v18.4s, \y4\l, z7 + smlsl\i v5.4s, \y4\l, z1 + smlsl\i v6.4s, \y4\l, z5 +.endm + +.macro idct_row4_neon y1, y2, y3, y4, pass + ld1 {\y1\().2d,\y2\().2d}, [x2], #32 + movi v23.4s, #1<<2, lsl #8 + orr v5.16b, \y1\().16b, \y2\().16b + ld1 {\y3\().2d,\y4\().2d}, [x2], #32 + orr v6.16b, \y3\().16b, \y4\().16b + orr v5.16b, v5.16b, v6.16b + mov x3, v5.d[1] + smlal v23.4s, \y1\().4h, z4 + + idct_col4_top \y1, \y2, \y3, \y4, 1, .4h + + cmp x3, #0 + b.eq \pass\()f + + smull2 v7.4s, \y1\().8h, z4 + smlal2 v17.4s, \y2\().8h, z5 + smlsl2 v18.4s, \y2\().8h, z1 + smull2 v16.4s, \y3\().8h, z2 + smlal2 v5.4s, \y2\().8h, z7 + add v19.4s, v19.4s, v7.4s + sub v20.4s, v20.4s, v7.4s + sub v21.4s, v21.4s, v7.4s + add v22.4s, v22.4s, v7.4s + smlal2 v6.4s, \y2\().8h, z3 + smull2 v7.4s, \y3\().8h, z6 + smlal2 v17.4s, \y4\().8h, z7 + smlsl2 v18.4s, \y4\().8h, z5 + smlal2 v5.4s, \y4\().8h, z3 + smlsl2 v6.4s, \y4\().8h, z1 + add v19.4s, v19.4s, v7.4s + sub v20.4s, v20.4s, v16.4s + add v21.4s, v21.4s, v16.4s + sub v22.4s, v22.4s, v7.4s + +\pass: add \y3\().4S, v19.4S, v17.4S + add \y4\().4s, v20.4s, v18.4s + shrn \y1\().4h, \y3\().4s, #ROW_SHIFT + shrn \y2\().4h, \y4\().4s, #ROW_SHIFT + add v7.4s, v21.4s, v5.4s + add v16.4s, v22.4s, v6.4s + shrn \y3\().4h, v7.4s, #ROW_SHIFT + shrn \y4\().4h, v16.4s, #ROW_SHIFT + sub v22.4s, v22.4s, v6.4s + sub v19.4s, v19.4s, v17.4s + sub v21.4s, v21.4s, v5.4s + shrn2 \y1\().8h, v22.4s, #ROW_SHIFT + sub v20.4s, v20.4s, v18.4s + shrn2 \y2\().8h, v21.4s, #ROW_SHIFT + shrn2 \y3\().8h, v20.4s, #ROW_SHIFT + shrn2 \y4\().8h, v19.4s, #ROW_SHIFT + + trn1 v16.8h, \y1\().8h, \y2\().8h + trn2 v17.8h, \y1\().8h, \y2\().8h + trn1 v18.8h, \y3\().8h, \y4\().8h + trn2 v19.8h, \y3\().8h, \y4\().8h + trn1 \y1\().4s, v16.4s, v18.4s + trn1 \y2\().4s, v17.4s, v19.4s + trn2 \y3\().4s, v16.4s, v18.4s + trn2 \y4\().4s, v17.4s, v19.4s +.endm + +.macro declare_idct_col4_neon i, l +function idct_col4_neon\i + dup v23.4h, z4c +.if \i == 1 + add v23.4h, v23.4h, v24.4h +.else + mov v5.d[0], v24.d[1] + add v23.4h, v23.4h, v5.4h +.endif + smull v23.4s, v23.4h, z4 + + idct_col4_top v24, v25, v26, v27, \i, \l + + mov x4, v28.d[\i - 1] + mov x5, v29.d[\i - 1] + cmp x4, #0 + b.eq 1f + + smull\i v7.4s, v28\l, z4 + add v19.4s, v19.4s, v7.4s + sub v20.4s, v20.4s, v7.4s + sub v21.4s, v21.4s, v7.4s + add v22.4s, v22.4s, v7.4s + +1: mov x4, v30.d[\i - 1] + cmp x5, #0 + b.eq 2f + + smlal\i v17.4s, v29\l, z5 + smlsl\i v18.4s, v29\l, z1 + smlal\i v5.4s, v29\l, z7 + smlal\i v6.4s, v29\l, z3 + +2: mov x5, v31.d[\i - 1] + cmp x4, #0 + b.eq 3f + + smull\i v7.4s, v30\l, z6 + smull\i v16.4s, v30\l, z2 + add v19.4s, v19.4s, v7.4s + sub v22.4s, v22.4s, v7.4s + sub v20.4s, v20.4s, v16.4s + add v21.4s, v21.4s, v16.4s + +3: cmp x5, #0 + b.eq 4f + + smlal\i v17.4s, v31\l, z7 + smlsl\i v18.4s, v31\l, z5 + smlal\i v5.4s, v31\l, z3 + smlsl\i v6.4s, v31\l, z1 + +4: addhn v7.4h, v19.4s, v17.4s + addhn2 v7.8h, v20.4s, v18.4s + subhn v18.4h, v20.4s, v18.4s + subhn2 v18.8h, v19.4s, v17.4s + + addhn v16.4h, v21.4s, v5.4s + addhn2 v16.8h, v22.4s, v6.4s + subhn v17.4h, v22.4s, v6.4s + subhn2 v17.8h, v21.4s, v5.4s + + ret +endfunc +.endm + +declare_idct_col4_neon 1, .4H +declare_idct_col4_neon 2, .8H + +function ff_simple_idct_put_neon, export=1 + idct_start x2 + + idct_row4_neon v24, v25, v26, v27, 1 + idct_row4_neon v28, v29, v30, v31, 2 + bl idct_col4_neon1 + + sqshrun v1.8b, v7.8h, #COL_SHIFT-16 + sqshrun2 v1.16b, v16.8h, #COL_SHIFT-16 + sqshrun v3.8b, v17.8h, #COL_SHIFT-16 + sqshrun2 v3.16b, v18.8h, #COL_SHIFT-16 + + bl idct_col4_neon2 + + sqshrun v2.8b, v7.8h, #COL_SHIFT-16 + sqshrun2 v2.16b, v16.8h, #COL_SHIFT-16 + sqshrun v4.8b, v17.8h, #COL_SHIFT-16 + sqshrun2 v4.16b, v18.8h, #COL_SHIFT-16 + + zip1 v16.4s, v1.4s, v2.4s + zip2 v17.4s, v1.4s, v2.4s + + st1 {v16.d}[0], [x0], x1 + st1 {v16.d}[1], [x0], x1 + + zip1 v18.4s, v3.4s, v4.4s + zip2 v19.4s, v3.4s, v4.4s + + st1 {v17.d}[0], [x0], x1 + st1 {v17.d}[1], [x0], x1 + st1 {v18.d}[0], [x0], x1 + st1 {v18.d}[1], [x0], x1 + st1 {v19.d}[0], [x0], x1 + st1 {v19.d}[1], [x0], x1 + + idct_end +endfunc + +function ff_simple_idct_add_neon, export=1 + idct_start x2 + + idct_row4_neon v24, v25, v26, v27, 1 + idct_row4_neon v28, v29, v30, v31, 2 + bl idct_col4_neon1 + + sshr v1.8h, v7.8h, #COL_SHIFT-16 + sshr v2.8h, v16.8h, #COL_SHIFT-16 + sshr v3.8h, v17.8h, #COL_SHIFT-16 + sshr v4.8h, v18.8h, #COL_SHIFT-16 + + bl idct_col4_neon2 + + sshr v7.8h, v7.8h, #COL_SHIFT-16 + sshr v16.8h, v16.8h, #COL_SHIFT-16 + sshr v17.8h, v17.8h, #COL_SHIFT-16 + sshr v18.8h, v18.8h, #COL_SHIFT-16 + + mov x9, x0 + ld1 {v19.d}[0], [x0], x1 + zip1 v23.2d, v1.2d, v7.2d + zip2 v24.2d, v1.2d, v7.2d + ld1 {v19.d}[1], [x0], x1 + zip1 v25.2d, v2.2d, v16.2d + zip2 v26.2d, v2.2d, v16.2d + ld1 {v20.d}[0], [x0], x1 + zip1 v27.2d, v3.2d, v17.2d + zip2 v28.2d, v3.2d, v17.2d + ld1 {v20.d}[1], [x0], x1 + zip1 v29.2d, v4.2d, v18.2d + zip2 v30.2d, v4.2d, v18.2d + ld1 {v21.d}[0], [x0], x1 + uaddw v23.8h, v23.8h, v19.8b + uaddw2 v24.8h, v24.8h, v19.16b + ld1 {v21.d}[1], [x0], x1 + sqxtun v23.8b, v23.8h + sqxtun2 v23.16b, v24.8h + ld1 {v22.d}[0], [x0], x1 + uaddw v24.8h, v25.8h, v20.8b + uaddw2 v25.8h, v26.8h, v20.16b + ld1 {v22.d}[1], [x0], x1 + sqxtun v24.8b, v24.8h + sqxtun2 v24.16b, v25.8h + st1 {v23.d}[0], [x9], x1 + uaddw v25.8h, v27.8h, v21.8b + uaddw2 v26.8h, v28.8h, v21.16b + st1 {v23.d}[1], [x9], x1 + sqxtun v25.8b, v25.8h + sqxtun2 v25.16b, v26.8h + st1 {v24.d}[0], [x9], x1 + uaddw v26.8h, v29.8h, v22.8b + uaddw2 v27.8h, v30.8h, v22.16b + st1 {v24.d}[1], [x9], x1 + sqxtun v26.8b, v26.8h + sqxtun2 v26.16b, v27.8h + st1 {v25.d}[0], [x9], x1 + st1 {v25.d}[1], [x9], x1 + st1 {v26.d}[0], [x9], x1 + st1 {v26.d}[1], [x9], x1 + + idct_end +endfunc + +function ff_simple_idct_neon, export=1 + idct_start x0 + + mov x2, x0 + idct_row4_neon v24, v25, v26, v27, 1 + idct_row4_neon v28, v29, v30, v31, 2 + sub x2, x2, #128 + bl idct_col4_neon1 + + sshr v1.8h, v7.8h, #COL_SHIFT-16 + sshr v2.8h, v16.8h, #COL_SHIFT-16 + sshr v3.8h, v17.8h, #COL_SHIFT-16 + sshr v4.8h, v18.8h, #COL_SHIFT-16 + + bl idct_col4_neon2 + + sshr v7.8h, v7.8h, #COL_SHIFT-16 + sshr v16.8h, v16.8h, #COL_SHIFT-16 + sshr v17.8h, v17.8h, #COL_SHIFT-16 + sshr v18.8h, v18.8h, #COL_SHIFT-16 + + zip1 v23.2d, v1.2d, v7.2d + zip2 v24.2d, v1.2d, v7.2d + st1 {v23.2d,v24.2d}, [x2], #32 + zip1 v25.2d, v2.2d, v16.2d + zip2 v26.2d, v2.2d, v16.2d + st1 {v25.2d,v26.2d}, [x2], #32 + zip1 v27.2d, v3.2d, v17.2d + zip2 v28.2d, v3.2d, v17.2d + st1 {v27.2d,v28.2d}, [x2], #32 + zip1 v29.2d, v4.2d, v18.2d + zip2 v30.2d, v4.2d, v18.2d + st1 {v29.2d,v30.2d}, [x2], #32 + + idct_end +endfunc |