diff options
Diffstat (limited to '')
| -rw-r--r-- | media/ffvpx/libavcodec/aarch64/idctdsp_neon.S | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/aarch64/idctdsp_neon.S b/media/ffvpx/libavcodec/aarch64/idctdsp_neon.S new file mode 100644 index 0000000000..7f47611206 --- /dev/null +++ b/media/ffvpx/libavcodec/aarch64/idctdsp_neon.S @@ -0,0 +1,130 @@ +/* + * IDCT AArch64 NEON optimisations + * + * Copyright (c) 2022 Ben Avison <bavison@riscosopen.org> + * + * 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" + +// Clamp 16-bit signed block coefficients to unsigned 8-bit +// On entry: +// x0 -> array of 64x 16-bit coefficients +// x1 -> 8-bit results +// x2 = row stride for results, bytes +function ff_put_pixels_clamped_neon, export=1 + ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [x0], #64 + ld1 {v4.16b, v5.16b, v6.16b, v7.16b}, [x0] + sqxtun v0.8b, v0.8h + sqxtun v1.8b, v1.8h + sqxtun v2.8b, v2.8h + sqxtun v3.8b, v3.8h + sqxtun v4.8b, v4.8h + st1 {v0.8b}, [x1], x2 + sqxtun v0.8b, v5.8h + st1 {v1.8b}, [x1], x2 + sqxtun v1.8b, v6.8h + st1 {v2.8b}, [x1], x2 + sqxtun v2.8b, v7.8h + st1 {v3.8b}, [x1], x2 + st1 {v4.8b}, [x1], x2 + st1 {v0.8b}, [x1], x2 + st1 {v1.8b}, [x1], x2 + st1 {v2.8b}, [x1] + ret +endfunc + +// Clamp 16-bit signed block coefficients to signed 8-bit (biased by 128) +// On entry: +// x0 -> array of 64x 16-bit coefficients +// x1 -> 8-bit results +// x2 = row stride for results, bytes +function ff_put_signed_pixels_clamped_neon, export=1 + ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [x0], #64 + movi v4.8b, #128 + ld1 {v16.16b, v17.16b, v18.16b, v19.16b}, [x0] + sqxtn v0.8b, v0.8h + sqxtn v1.8b, v1.8h + sqxtn v2.8b, v2.8h + sqxtn v3.8b, v3.8h + sqxtn v5.8b, v16.8h + add v0.8b, v0.8b, v4.8b + sqxtn v6.8b, v17.8h + add v1.8b, v1.8b, v4.8b + sqxtn v7.8b, v18.8h + add v2.8b, v2.8b, v4.8b + sqxtn v16.8b, v19.8h + add v3.8b, v3.8b, v4.8b + st1 {v0.8b}, [x1], x2 + add v0.8b, v5.8b, v4.8b + st1 {v1.8b}, [x1], x2 + add v1.8b, v6.8b, v4.8b + st1 {v2.8b}, [x1], x2 + add v2.8b, v7.8b, v4.8b + st1 {v3.8b}, [x1], x2 + add v3.8b, v16.8b, v4.8b + st1 {v0.8b}, [x1], x2 + st1 {v1.8b}, [x1], x2 + st1 {v2.8b}, [x1], x2 + st1 {v3.8b}, [x1] + ret +endfunc + +// Add 16-bit signed block coefficients to unsigned 8-bit +// On entry: +// x0 -> array of 64x 16-bit coefficients +// x1 -> 8-bit input and results +// x2 = row stride for 8-bit input and results, bytes +function ff_add_pixels_clamped_neon, export=1 + ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [x0], #64 + mov x3, x1 + ld1 {v4.8b}, [x1], x2 + ld1 {v5.8b}, [x1], x2 + ld1 {v6.8b}, [x1], x2 + ld1 {v7.8b}, [x1], x2 + ld1 {v16.16b, v17.16b, v18.16b, v19.16b}, [x0] + uaddw v0.8h, v0.8h, v4.8b + uaddw v1.8h, v1.8h, v5.8b + uaddw v2.8h, v2.8h, v6.8b + ld1 {v4.8b}, [x1], x2 + uaddw v3.8h, v3.8h, v7.8b + ld1 {v5.8b}, [x1], x2 + sqxtun v0.8b, v0.8h + ld1 {v6.8b}, [x1], x2 + sqxtun v1.8b, v1.8h + ld1 {v7.8b}, [x1] + sqxtun v2.8b, v2.8h + sqxtun v3.8b, v3.8h + uaddw v4.8h, v16.8h, v4.8b + st1 {v0.8b}, [x3], x2 + uaddw v0.8h, v17.8h, v5.8b + st1 {v1.8b}, [x3], x2 + uaddw v1.8h, v18.8h, v6.8b + st1 {v2.8b}, [x3], x2 + uaddw v2.8h, v19.8h, v7.8b + sqxtun v4.8b, v4.8h + sqxtun v0.8b, v0.8h + st1 {v3.8b}, [x3], x2 + sqxtun v1.8b, v1.8h + sqxtun v2.8b, v2.8h + st1 {v4.8b}, [x3], x2 + st1 {v0.8b}, [x3], x2 + st1 {v1.8b}, [x3], x2 + st1 {v2.8b}, [x3] + ret +endfunc |