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110 lines
4.0 KiB
110 lines
4.0 KiB
9 years ago
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/*
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* Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
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* Copyright (c) 2015 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 "libavutil/aarch64/asm.S"
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function ff_dca_lfe_fir0_neon, export=1
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mov x3, #32 // decifactor
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sub x1, x1, #7*4
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add x4, x0, #2*32*4 - 16 // out2
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mov x7, #-16
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ld1 {v0.4s,v1.4s}, [x1]
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// reverse [-num_coeffs + 1, 0]
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ext v3.16b, v0.16b, v0.16b, #8
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ext v2.16b, v1.16b, v1.16b, #8
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rev64 v3.4s, v3.4s
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rev64 v2.4s, v2.4s
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1:
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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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subs x3, x3, #4
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fmul v16.4s, v2.4s, v4.4s
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fmul v23.4s, v0.4s, v4.4s
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fmul v17.4s, v2.4s, v6.4s
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fmul v22.4s, v0.4s, v6.4s
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fmla v16.4s, v3.4s, v5.4s
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fmla v23.4s, v1.4s, v5.4s
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ld1 {v4.4s,v5.4s}, [x2], #32
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fmla v17.4s, v3.4s, v7.4s
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fmla v22.4s, v1.4s, v7.4s
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ld1 {v6.4s,v7.4s}, [x2], #32
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fmul v18.4s, v2.4s, v4.4s
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fmul v21.4s, v0.4s, v4.4s
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fmul v19.4s, v2.4s, v6.4s
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fmul v20.4s, v0.4s, v6.4s
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fmla v18.4s, v3.4s, v5.4s
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fmla v21.4s, v1.4s, v5.4s
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fmla v19.4s, v3.4s, v7.4s
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fmla v20.4s, v1.4s, v7.4s
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faddp v16.4s, v16.4s, v17.4s
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faddp v18.4s, v18.4s, v19.4s
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faddp v20.4s, v20.4s, v21.4s
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faddp v22.4s, v22.4s, v23.4s
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faddp v16.4s, v16.4s, v18.4s
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faddp v20.4s, v20.4s, v22.4s
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st1 {v16.4s}, [x0], #16
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st1 {v20.4s}, [x4], x7
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b.gt 1b
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ret
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endfunc
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function ff_dca_lfe_fir1_neon, export=1
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mov x3, #64 // decifactor
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sub x1, x1, #3*4
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add x4, x0, #2*64*4 - 16 // out2
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mov x7, #-16
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ld1 {v0.4s}, [x1]
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// reverse [-num_coeffs + 1, 0]
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ext v1.16b, v0.16b, v0.16b, #8
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rev64 v1.4s, v1.4s
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1:
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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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subs x3, x3, #4
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fmul v16.4s, v1.4s, v4.4s
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fmul v23.4s, v0.4s, v4.4s
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fmul v17.4s, v1.4s, v5.4s
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fmul v22.4s, v0.4s, v5.4s
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fmul v18.4s, v1.4s, v6.4s
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fmul v21.4s, v0.4s, v6.4s
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fmul v19.4s, v1.4s, v7.4s
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fmul v20.4s, v0.4s, v7.4s
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faddp v16.4s, v16.4s, v17.4s
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faddp v18.4s, v18.4s, v19.4s
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faddp v20.4s, v20.4s, v21.4s
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faddp v22.4s, v22.4s, v23.4s
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faddp v16.4s, v16.4s, v18.4s
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faddp v20.4s, v20.4s, v22.4s
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st1 {v16.4s}, [x0], #16
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st1 {v20.4s}, [x4], x7
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b.gt 1b
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ret
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endfunc
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