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- /*
- * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
- * Copyright (c) 2015 Janne Grunau <janne-libav@jannau.net>
- *
- * This file is part of Libav.
- *
- * Libav 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.
- *
- * Libav 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 Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
- #include "libavutil/aarch64/asm.S"
-
- function ff_dca_lfe_fir0_neon, export=1
- mov x3, #32 // decifactor
- sub x1, x1, #7*4
- add x4, x0, #2*32*4 - 16 // out2
- mov x7, #-16
-
- ld1 {v0.4s,v1.4s}, [x1]
- // reverse [-num_coeffs + 1, 0]
- ext v3.16b, v0.16b, v0.16b, #8
- ext v2.16b, v1.16b, v1.16b, #8
- rev64 v3.4s, v3.4s
- rev64 v2.4s, v2.4s
- 1:
- ld1 {v4.4s,v5.4s}, [x2], #32
- ld1 {v6.4s,v7.4s}, [x2], #32
- subs x3, x3, #4
- fmul v16.4s, v2.4s, v4.4s
- fmul v23.4s, v0.4s, v4.4s
- fmul v17.4s, v2.4s, v6.4s
- fmul v22.4s, v0.4s, v6.4s
-
- fmla v16.4s, v3.4s, v5.4s
- fmla v23.4s, v1.4s, v5.4s
- ld1 {v4.4s,v5.4s}, [x2], #32
- fmla v17.4s, v3.4s, v7.4s
- fmla v22.4s, v1.4s, v7.4s
- ld1 {v6.4s,v7.4s}, [x2], #32
- fmul v18.4s, v2.4s, v4.4s
- fmul v21.4s, v0.4s, v4.4s
- fmul v19.4s, v2.4s, v6.4s
- fmul v20.4s, v0.4s, v6.4s
-
- fmla v18.4s, v3.4s, v5.4s
- fmla v21.4s, v1.4s, v5.4s
- fmla v19.4s, v3.4s, v7.4s
- fmla v20.4s, v1.4s, v7.4s
-
- faddp v16.4s, v16.4s, v17.4s
- faddp v18.4s, v18.4s, v19.4s
- faddp v20.4s, v20.4s, v21.4s
- faddp v22.4s, v22.4s, v23.4s
- faddp v16.4s, v16.4s, v18.4s
- faddp v20.4s, v20.4s, v22.4s
-
- st1 {v16.4s}, [x0], #16
- st1 {v20.4s}, [x4], x7
- b.gt 1b
-
- ret
- endfunc
-
- function ff_dca_lfe_fir1_neon, export=1
- mov x3, #64 // decifactor
- sub x1, x1, #3*4
- add x4, x0, #2*64*4 - 16 // out2
- mov x7, #-16
-
- ld1 {v0.4s}, [x1]
- // reverse [-num_coeffs + 1, 0]
- ext v1.16b, v0.16b, v0.16b, #8
- rev64 v1.4s, v1.4s
-
- 1:
- ld1 {v4.4s,v5.4s}, [x2], #32
- ld1 {v6.4s,v7.4s}, [x2], #32
- subs x3, x3, #4
- fmul v16.4s, v1.4s, v4.4s
- fmul v23.4s, v0.4s, v4.4s
- fmul v17.4s, v1.4s, v5.4s
- fmul v22.4s, v0.4s, v5.4s
- fmul v18.4s, v1.4s, v6.4s
- fmul v21.4s, v0.4s, v6.4s
- fmul v19.4s, v1.4s, v7.4s
- fmul v20.4s, v0.4s, v7.4s
- faddp v16.4s, v16.4s, v17.4s
- faddp v18.4s, v18.4s, v19.4s
- faddp v20.4s, v20.4s, v21.4s
- faddp v22.4s, v22.4s, v23.4s
- faddp v16.4s, v16.4s, v18.4s
- faddp v20.4s, v20.4s, v22.4s
- st1 {v16.4s}, [x0], #16
- st1 {v20.4s}, [x4], x7
- b.gt 1b
-
- ret
- endfunc
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