2014-04-20 18:57:36 +03:00
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/*
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* Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
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*
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2014-04-23 00:51:13 +03:00
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* This file is part of FFmpeg.
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2014-04-20 18:57:36 +03:00
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*
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2014-04-23 00:51:13 +03:00
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* FFmpeg is free software; you can redistribute it and/or
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2014-04-20 18:57:36 +03:00
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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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2014-04-23 00:51:13 +03:00
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* FFmpeg is distributed in the hope that it will be useful,
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2014-04-20 18:57:36 +03:00
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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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2014-04-23 00:51:13 +03:00
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* License along with FFmpeg; if not, write to the Free Software
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2014-04-20 18:57:36 +03:00
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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 "libavutil/aarch64/asm.S"
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function ff_vorbis_inverse_coupling_neon, export=1
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movi v20.4s, #1<<7, lsl #24
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subs x2, x2, #4
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mov x3, x0
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mov x4, x1
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b.eq 3f
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ld1 {v7.4s}, [x1], #16
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ld1 {v6.4s}, [x0], #16
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cmle v4.4s, v7.4s, #0
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and v5.16b, v6.16b, v20.16b
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eor v7.16b, v7.16b, v5.16b
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and v2.16b, v7.16b, v4.16b
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bic v3.16b, v7.16b, v4.16b
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fadd v7.4s, v6.4s, v2.4s
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fsub v6.4s, v6.4s, v3.4s
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1: ld1 {v1.4s}, [x1], #16
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ld1 {v0.4s}, [x0], #16
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cmle v4.4s, v1.4s, #0
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and v5.16b, v0.16b, v20.16b
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eor v1.16b, v1.16b, v5.16b
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st1 {v7.4s}, [x3], #16
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st1 {v6.4s}, [x4], #16
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and v2.16b, v1.16b, v4.16b
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bic v3.16b, v1.16b, v4.16b
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fadd v1.4s, v0.4s, v2.4s
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fsub v0.4s, v0.4s, v3.4s
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subs x2, x2, #8
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b.le 2f
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ld1 {v7.4s}, [x1], #16
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ld1 {v6.4s}, [x0], #16
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cmle v4.4s, v7.4s, #0
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and v5.16b, v6.16b, v20.16b
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eor v7.16b, v7.16b, v5.16b
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st1 {v1.4s}, [x3], #16
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st1 {v0.4s}, [x4], #16
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and v2.16b, v7.16b, v4.16b
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bic v3.16b, v7.16b, v4.16b
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fadd v7.4s, v6.4s, v2.4s
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fsub v6.4s, v6.4s, v3.4s
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b 1b
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2: st1 {v1.4s}, [x3], #16
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st1 {v0.4s}, [x4], #16
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b.lt ret
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3: ld1 {v1.4s}, [x1]
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ld1 {v0.4s}, [x0]
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cmle v4.4s, v1.4s, #0
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and v5.16b, v0.16b, v20.16b
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eor v1.16b, v1.16b, v5.16b
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and v2.16b, v1.16b, v4.16b
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bic v3.16b, v1.16b, v4.16b
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fadd v1.4s, v0.4s, v2.4s
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fsub v0.4s, v0.4s, v3.4s
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st1 {v1.4s}, [x0], #16
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st1 {v0.4s}, [x1], #16
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ret:
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ret
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endfunc
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