| /* |
| * Copyright (c) 2010 Mans Rullgard <mans@mansr.com> |
| * Copyright (c) 2015 Janne Grunau <janne-libav@jannau.net> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg 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. |
| * |
| * FFmpeg 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 FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "asm-offsets.h" |
| |
| #include "libavutil/aarch64/asm.S" |
| |
| .macro inner_loop |
| ld1 {v29.4s}, [x9], x15 |
| ld1 {v28.4s}, [x8], x15 |
| ld1 {v30.4s}, [x10], x15 |
| ld1 {v31.4s}, [x11], x15 |
| rev64 v28.4s, v28.4s |
| ld1 {v24.4s}, [x4], x15 |
| ld1 {v25.4s}, [x5], x15 |
| rev64 v31.4s, v31.4s |
| ld1 {v26.4s}, [x6], x15 |
| fmla v5.4s, v25.4s, v29.4s |
| ld1 {v27.4s}, [x7], x15 |
| ext v28.16b, v28.16b, v28.16b, #8 |
| ext v31.16b, v31.16b, v31.16b, #8 |
| fmla v6.4s, v26.4s, v30.4s |
| fmls v4.4s, v24.4s, v28.4s |
| fmla v7.4s, v27.4s, v31.4s |
| .endm |
| |
| function ff_synth_filter_float_neon, export=1 |
| ldr w7, [x2] // *synth_buf_offset |
| ldr x9, [x0, #IMDCT_HALF] // imdct_half function pointer |
| sxtw x7, w7 |
| stp x3, x4, [sp, #-64]! |
| add x1, x1, x7, lsl #2 // synth_buf |
| sub w8, w7, #32 |
| stp x5, x1, [sp, #16] |
| and x7, x7, #~63 |
| and w8, w8, #511 |
| stp x7, x30, [sp, #32] |
| str w8, [x2] |
| str s0, [sp, #48] |
| |
| mov x2, x6 // in |
| |
| blr x9 |
| |
| ldp x2, x4, [sp] // synct_buf_2, window |
| ldp x13, x9, [sp, #16] // out, synth_buf |
| ldp x0, x30, [sp, #32] // *synth_buf_offset |
| ldr s0, [sp, #48] |
| |
| add x3, x2, #16*4 // synct_buf_2 + 16 |
| add x14, x13, #16*4 // out + 16 |
| add x8, x9, #12*4 |
| mov x15, #64*4 |
| mov x1, #4 |
| 1: |
| add x10, x9, #16*4 // synth_buf |
| add x11, x8, #16*4 |
| add x5, x4, #16*4 // window |
| add x6, x4, #32*4 |
| add x7, x4, #48*4 |
| |
| ld1 {v4.4s}, [x2] // a |
| ld1 {v5.4s}, [x3] // b |
| movi v6.4s, #0 // c |
| movi v7.4s, #0 // d |
| |
| mov x12, #512 |
| 2: |
| sub x12, x12, #64 |
| cmp x12, x0 |
| inner_loop |
| b.gt 2b |
| |
| sub x8, x8, #512*4 |
| sub x9, x9, #512*4 |
| cbz x12, 4f |
| sub x10, x10, #512*4 |
| sub x11, x11, #512*4 |
| 3: |
| subs x12, x12, #64 |
| inner_loop |
| b.gt 3b |
| 4: |
| subs x1, x1, #1 |
| fmul v4.4s, v4.4s, v0.s[0] |
| fmul v5.4s, v5.4s, v0.s[0] |
| st1 {v6.4s}, [x2], #16 |
| st1 {v7.4s}, [x3], #16 |
| st1 {v4.4s}, [x13], #16 |
| st1 {v5.4s}, [x14], #16 |
| b.le 10f |
| |
| sub x4, x4, #508*4 // window |
| add x9, x9, #4*4 // synth_buf |
| sub x8, x8, #4*4 // synth_buf |
| b 1b |
| |
| 10: |
| add sp, sp, #64 |
| ret |
| endfunc |
