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111 lines
3.8 KiB
111 lines
3.8 KiB
/* |
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* Copyright (c) 2011 Mans Rullgard <mans@mansr.com> |
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* Copyright (c) 2024 Geoff Hill <geoff@geoffhill.org> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with FFmpeg; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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*/ |
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#include "libavutil/aarch64/asm.S" |
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function ff_ac3_exponent_min_neon, export=1 |
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cbz w1, 3f |
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1: ld1 {v0.16b}, [x0] |
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mov w3, w1 |
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add x4, x0, #256 |
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2: ld1 {v1.16b}, [x4] |
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umin v0.16b, v0.16b, v1.16b |
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add x4, x4, #256 |
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subs w3, w3, #1 |
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b.gt 2b |
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st1 {v0.16b}, [x0], #16 |
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subs w2, w2, #16 |
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b.gt 1b |
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3: ret |
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endfunc |
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function ff_ac3_extract_exponents_neon, export=1 |
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movi v1.4s, #8 |
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1: ld1 {v0.4s}, [x1], #16 |
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abs v0.4s, v0.4s |
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clz v0.4s, v0.4s |
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sub v0.4s, v0.4s, v1.4s |
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xtn v0.4h, v0.4s |
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xtn v0.8b, v0.8h |
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st1 {v0.s}[0], [x0], #4 |
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subs w2, w2, #4 |
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b.gt 1b |
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ret |
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endfunc |
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function ff_float_to_fixed24_neon, export=1 |
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1: ld1 {v0.4s, v1.4s}, [x1], #32 |
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fcvtzs v0.4s, v0.4s, #24 |
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ld1 {v2.4s, v3.4s}, [x1], #32 |
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fcvtzs v1.4s, v1.4s, #24 |
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fcvtzs v2.4s, v2.4s, #24 |
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st1 {v0.4s, v1.4s}, [x0], #32 |
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fcvtzs v3.4s, v3.4s, #24 |
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st1 {v2.4s, v3.4s}, [x0], #32 |
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subs w2, w2, #16 |
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b.ne 1b |
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ret |
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endfunc |
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function ff_ac3_sum_square_butterfly_int32_neon, export=1 |
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movi v0.2d, #0 |
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movi v1.2d, #0 |
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movi v2.2d, #0 |
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movi v3.2d, #0 |
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1: ld1 {v4.2s}, [x1], #8 |
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ld1 {v5.2s}, [x2], #8 |
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add v6.2s, v4.2s, v5.2s |
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sub v7.2s, v4.2s, v5.2s |
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smlal v0.2d, v4.2s, v4.2s |
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smlal v1.2d, v5.2s, v5.2s |
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smlal v2.2d, v6.2s, v6.2s |
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smlal v3.2d, v7.2s, v7.2s |
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subs w3, w3, #2 |
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b.gt 1b |
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addp d0, v0.2d |
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addp d1, v1.2d |
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addp d2, v2.2d |
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addp d3, v3.2d |
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st1 {v0.1d-v3.1d}, [x0] |
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ret |
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endfunc |
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function ff_ac3_sum_square_butterfly_float_neon, export=1 |
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movi v0.4s, #0 |
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movi v1.4s, #0 |
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movi v2.4s, #0 |
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movi v3.4s, #0 |
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1: ld1 {v30.4s}, [x1], #16 |
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ld1 {v31.4s}, [x2], #16 |
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fadd v16.4s, v30.4s, v31.4s |
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fsub v17.4s, v30.4s, v31.4s |
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fmla v0.4s, v30.4s, v30.4s |
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fmla v1.4s, v31.4s, v31.4s |
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fmla v2.4s, v16.4s, v16.4s |
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fmla v3.4s, v17.4s, v17.4s |
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subs w3, w3, #4 |
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b.gt 1b |
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faddp v0.4s, v0.4s, v1.4s |
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faddp v2.4s, v2.4s, v3.4s |
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faddp v0.4s, v0.4s, v2.4s |
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st1 {v0.4s}, [x0] |
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ret |
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endfunc
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