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202 lines
7.7 KiB
202 lines
7.7 KiB
/* |
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* ARM NEON optimised Float DSP functions |
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* Copyright (c) 2008 Mans Rullgard <mans@mansr.com> |
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* Copyright (c) 2014 Janne Grunau <janne-libav@jannau.net> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav 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 GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "config.h" |
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#include "asm.S" |
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function ff_vector_fmul_neon, export=1 |
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1: subs w3, w3, #16 |
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ld1 {v0.4S, v1.4S}, [x1], #32 |
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ld1 {v2.4S, v3.4S}, [x1], #32 |
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ld1 {v4.4S, v5.4S}, [x2], #32 |
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ld1 {v6.4S, v7.4S}, [x2], #32 |
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fmul v16.4S, v0.4S, v4.4S |
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fmul v17.4S, v1.4S, v5.4S |
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fmul v18.4S, v2.4S, v6.4S |
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fmul v19.4S, v3.4S, v7.4S |
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st1 {v16.4S, v17.4S}, [x0], #32 |
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st1 {v18.4S, v19.4S}, [x0], #32 |
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b.ne 1b |
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ret |
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endfunc |
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function ff_vector_fmac_scalar_neon, export=1 |
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mov x3, #-32 |
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1: subs w2, w2, #16 |
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ld1 {v16.4S, v17.4S}, [x0], #32 |
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ld1 {v18.4S, v19.4S}, [x0], x3 |
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ld1 {v4.4S, v5.4S}, [x1], #32 |
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ld1 {v6.4S, v7.4S}, [x1], #32 |
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fmla v16.4S, v4.4S, v0.S[0] |
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fmla v17.4S, v5.4S, v0.S[0] |
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fmla v18.4S, v6.4S, v0.S[0] |
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fmla v19.4S, v7.4S, v0.S[0] |
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st1 {v16.4S, v17.4S}, [x0], #32 |
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st1 {v18.4S, v19.4S}, [x0], #32 |
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b.ne 1b |
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ret |
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endfunc |
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function ff_vector_fmul_scalar_neon, export=1 |
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mov w4, #15 |
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bics w3, w2, w4 |
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dup v16.4S, v0.S[0] |
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b.eq 3f |
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ld1 {v0.4S, v1.4S}, [x1], #32 |
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1: subs w3, w3, #16 |
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fmul v0.4S, v0.4S, v16.4S |
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ld1 {v2.4S, v3.4S}, [x1], #32 |
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fmul v1.4S, v1.4S, v16.4S |
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fmul v2.4S, v2.4S, v16.4S |
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st1 {v0.4S, v1.4S}, [x0], #32 |
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fmul v3.4S, v3.4S, v16.4S |
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b.eq 2f |
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ld1 {v0.4S, v1.4S}, [x1], #32 |
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st1 {v2.4S, v3.4S}, [x0], #32 |
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b 1b |
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2: ands w2, w2, #15 |
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st1 {v2.4S, v3.4S}, [x0], #32 |
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b.eq 4f |
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3: ld1 {v0.4S}, [x1], #16 |
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fmul v0.4S, v0.4S, v16.4S |
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st1 {v0.4S}, [x0], #16 |
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subs w2, w2, #4 |
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b.gt 3b |
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4: ret |
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endfunc |
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function ff_vector_dmul_scalar_neon, export=1 |
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dup v16.2D, v0.D[0] |
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ld1 {v0.2D, v1.2D}, [x1], #32 |
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1: subs w2, w2, #8 |
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fmul v0.2D, v0.2D, v16.2D |
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ld1 {v2.2D, v3.2D}, [x1], #32 |
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fmul v1.2D, v1.2D, v16.2D |
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fmul v2.2D, v2.2D, v16.2D |
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st1 {v0.2D, v1.2D}, [x0], #32 |
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fmul v3.2D, v3.2D, v16.2D |
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ld1 {v0.2D, v1.2D}, [x1], #32 |
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st1 {v2.2D, v3.2D}, [x0], #32 |
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b.gt 1b |
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ret |
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endfunc |
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function ff_vector_fmul_window_neon, export=1 |
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sxtw x4, w4 // len |
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sub x2, x2, #8 |
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sub x5, x4, #2 |
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add x2, x2, x5, lsl #2 // src1 + 4 * (len - 4) |
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add x6, x3, x5, lsl #3 // win + 8 * (len - 2) |
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add x5, x0, x5, lsl #3 // dst + 8 * (len - 2) |
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mov x7, #-16 |
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ld1 {v0.4S}, [x1], #16 // s0 |
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ld1 {v2.4S}, [x3], #16 // wi |
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ld1 {v1.4S}, [x2], x7 // s1 |
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1: ld1 {v3.4S}, [x6], x7 // wj |
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subs x4, x4, #4 |
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fmul v17.4S, v0.4S, v2.4S // s0 * wi |
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rev64 v4.4S, v1.4S |
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rev64 v5.4S, v3.4S |
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rev64 v17.4S, v17.4S |
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ext v4.16B, v4.16B, v4.16B, #8 // s1_r |
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ext v5.16B, v5.16B, v5.16B, #8 // wj_r |
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ext v17.16B, v17.16B, v17.16B, #8 // (s0 * wi)_rev |
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fmul v16.4S, v0.4S, v5.4S // s0 * wj_r |
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fmla v17.4S, v1.4S, v3.4S // (s0 * wi)_rev + s1 * wj |
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b.eq 2f |
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ld1 {v0.4S}, [x1], #16 |
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fmls v16.4S, v4.4S, v2.4S // s0 * wj_r - s1_r * wi |
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st1 {v17.4S}, [x5], x7 |
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ld1 {v2.4S}, [x3], #16 |
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ld1 {v1.4S}, [x2], x7 |
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st1 {v16.4S}, [x0], #16 |
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b 1b |
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2: |
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fmls v16.4S, v4.4S, v2.4S // s0 * wj_r - s1_r * wi |
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st1 {v17.4S}, [x5], x7 |
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st1 {v16.4S}, [x0], #16 |
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ret |
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endfunc |
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function ff_vector_fmul_add_neon, export=1 |
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ld1 {v0.4S, v1.4S}, [x1], #32 |
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ld1 {v2.4S, v3.4S}, [x2], #32 |
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ld1 {v4.4S, v5.4S}, [x3], #32 |
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1: subs w4, w4, #8 |
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fmla v4.4S, v0.4S, v2.4S |
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fmla v5.4S, v1.4S, v3.4S |
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b.eq 2f |
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ld1 {v0.4S, v1.4S}, [x1], #32 |
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ld1 {v2.4S, v3.4S}, [x2], #32 |
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st1 {v4.4S, v5.4S}, [x0], #32 |
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ld1 {v4.4S, v5.4S}, [x3], #32 |
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b 1b |
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2: st1 {v4.4S, v5.4S}, [x0], #32 |
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ret |
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endfunc |
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function ff_vector_fmul_reverse_neon, export=1 |
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sxtw x3, w3 |
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add x2, x2, x3, lsl #2 |
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sub x2, x2, #32 |
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mov x4, #-32 |
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ld1 {v2.4S, v3.4S}, [x2], x4 |
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ld1 {v0.4S, v1.4S}, [x1], #32 |
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1: subs x3, x3, #8 |
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rev64 v3.4S, v3.4S |
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rev64 v2.4S, v2.4S |
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ext v3.16B, v3.16B, v3.16B, #8 |
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ext v2.16B, v2.16B, v2.16B, #8 |
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fmul v16.4S, v0.4S, v3.4S |
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fmul v17.4S, v1.4S, v2.4S |
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b.eq 2f |
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ld1 {v2.4S, v3.4S}, [x2], x4 |
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ld1 {v0.4S, v1.4S}, [x1], #32 |
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st1 {v16.4S, v17.4S}, [x0], #32 |
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b 1b |
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2: st1 {v16.4S, v17.4S}, [x0], #32 |
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ret |
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endfunc |
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function ff_butterflies_float_neon, export=1 |
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1: ld1 {v0.4S}, [x0] |
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ld1 {v1.4S}, [x1] |
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subs w2, w2, #4 |
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fsub v2.4S, v0.4S, v1.4S |
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fadd v3.4S, v0.4S, v1.4S |
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st1 {v2.4S}, [x1], #16 |
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st1 {v3.4S}, [x0], #16 |
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b.gt 1b |
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ret |
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endfunc |
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function ff_scalarproduct_float_neon, export=1 |
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movi v2.4S, #0 |
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1: ld1 {v0.4S}, [x0], #16 |
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ld1 {v1.4S}, [x1], #16 |
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subs w2, w2, #4 |
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fmla v2.4S, v0.4S, v1.4S |
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b.gt 1b |
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faddp v0.4S, v2.4S, v2.4S |
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faddp s0, v0.2S |
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ret |
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endfunc
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