| /* |
| * Copyright (c) 2014 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 "libavutil/aarch64/asm.S" |
| |
| #define FRAC_BITS 23 // fractional bits for sb_samples and dct |
| #define WFRAC_BITS 16 // fractional bits for window |
| #define OUT_SHIFT (WFRAC_BITS + FRAC_BITS - 15) |
| |
| const tbl_rev128_s, align=4 |
| .byte 12, 13, 14, 15 |
| .byte 8, 9, 10, 11 |
| .byte 4, 5, 6, 7 |
| .byte 0, 1, 2, 3 |
| endconst |
| |
| .macro apply_window type, st |
| function ff_mpadsp_apply_window_\type\()_neon, export=1 |
| mov x7, x0 |
| add x8, x0, #512<<2 |
| ld1 {v0.4s,v1.4s,v2.4s,v3.4s}, [x7], #64 |
| ld1 {v4.4s,v5.4s,v6.4s,v7.4s}, [x7], #64 |
| st1 {v0.4s,v1.4s,v2.4s,v3.4s}, [x8], #64 |
| st1 {v4.4s,v5.4s,v6.4s,v7.4s}, [x8], #64 |
| movrel x15, tbl_rev128_s |
| ld1 {v27.4s}, [x15] |
| .ifc \type, fixed |
| lsl x4, x4, #1 |
| .else |
| lsl x4, x4, #2 |
| .endif |
| add x10, x0, #45<<2 |
| add x0, x0, #16<<2 |
| add x1, x1, #16<<2 |
| add x5, x3, x4, lsl #5 |
| sub x5, x5, x4 // samples2 |
| neg x13, x4 // -incr |
| mov x9, #64<<2 |
| .ifc \type, fixed |
| ld1r {v16.2s}, [x2] // dither_state |
| sxtl v16.2d, v16.2s |
| movi v29.2d, #0 |
| movi v30.2d, #(1<<OUT_SHIFT)-1 |
| trn1 v31.2d, v29.2d, v30.2d |
| trn2 v30.2d, v30.2d, v29.2d |
| trn1 v16.2d, v16.2d, v29.2d |
| .else |
| movi v16.4s, #0 |
| movi v28.4s, #0 |
| .endif |
| mov x14, #4 |
| 1: |
| mov x8, x0 |
| sub x7, x1, #3<<2 |
| sub x6, x1, x14, lsl #4 |
| add x7, x7, x14, lsl #4 |
| add x11, x6, #(32)<<2 // w + 32 |
| add x12, x7, #(32)<<2 // w2 + 32 |
| mov x15, #8 |
| movi v17.2d, #0 |
| movi v18.2d, #0 |
| movi v19.2d, #0 |
| 2: |
| subs x15, x15, #1 |
| ld1 {v0.4s}, [x8], x9 |
| ld1 {v1.4s}, [x10], x9 |
| ld1 {v2.4s}, [x6], x9 |
| ld1 {v3.4s}, [x7], x9 |
| tbl v6.16b, {v0.16b}, v27.16b |
| tbl v7.16b, {v1.16b}, v27.16b |
| ld1 {v4.4s}, [x11], x9 |
| ld1 {v5.4s}, [x12], x9 |
| MLA v16, v2, v0 |
| MLA2 v17, v2, v0 |
| MLS v18, v3, v6 |
| MLS2 v19, v3, v6 |
| MLS v16, v4, v7 |
| MLS2 v17, v4, v7 |
| MLS v18, v5, v1 |
| MLS2 v19, v5, v1 |
| b.gt 2b |
| |
| cmp x14, #4 |
| sub x10, x10, #64<<5 // 64 * 8 * sizeof(int32_t) |
| |
| .ifc \type, fixed |
| and v28.16b, v16.16b, v30.16b |
| ext v28.16b, v29.16b, v28.16b, #8 |
| |
| b.eq 4f |
| round_sample v19, 1, 1 |
| 4: |
| round_sample v16, 1, 0 |
| shrn v16.2s, v16.2d, #OUT_SHIFT |
| round_sample v19, 0, 0 |
| shrn v19.2s, v19.2d, #OUT_SHIFT |
| round_sample v17, 0, 1 |
| round_sample v18, 1, 1 |
| round_sample v17, 1, 0 |
| shrn2 v16.4s, v17.2d, #OUT_SHIFT |
| round_sample v18, 0, 0 |
| shrn2 v19.4s, v18.2d, #OUT_SHIFT |
| sqxtn v16.4h, v16.4s |
| sqxtn v18.4h, v19.4s |
| .else |
| ext v18.16b, v18.16b, v18.16b, #8 |
| .endif |
| |
| st1 {v16.\st\()}[0], [x3], x4 |
| b.eq 4f |
| st1 {v18.\st\()}[1], [x5], x13 |
| 4: |
| st1 {v16.\st\()}[1], [x3], x4 |
| st1 {v18.\st\()}[0], [x5], x13 |
| st1 {v16.\st\()}[2], [x3], x4 |
| st1 {v18.\st\()}[3], [x5], x13 |
| st1 {v16.\st\()}[3], [x3], x4 |
| st1 {v18.\st\()}[2], [x5], x13 |
| |
| mov v16.16b, v28.16b |
| |
| subs x14, x14, #1 |
| add x0, x0, #4<<2 |
| sub x10, x10, #4<<2 |
| b.gt 1b |
| |
| // computing samples[16] |
| add x6, x1, #32<<2 |
| ld1 {v0.2s}, [x6], x9 |
| ld1 {v1.2s}, [x0], x9 |
| .rept 3 |
| ld1 {v2.2s}, [x6], x9 |
| ld1 {v3.2s}, [x0], x9 |
| MLS v16, v0, v1 |
| ld1 {v0.2s}, [x6], x9 |
| ld1 {v1.2s}, [x0], x9 |
| MLS v16, v2, v3 |
| .endr |
| ld1 {v2.2s}, [x6], x9 |
| ld1 {v3.2s}, [x0], x9 |
| MLS v16, v0, v1 |
| MLS v16, v2, v3 |
| |
| .ifc \type, fixed |
| and v28.16b, v16.16b, v30.16b |
| shrn v20.2s, v16.2d, #OUT_SHIFT |
| xtn v28.2s, v28.2d |
| sqxtn v20.4h, v20.4s |
| st1 {v28.s}[0], [x2] // save dither_state |
| st1 {v20.h}[0], [x3] |
| .else |
| st1 {v16.s}[0], [x3] |
| .endif |
| |
| ret |
| endfunc |
| .purgem round_sample |
| .purgem MLA |
| .purgem MLA2 |
| .purgem MLS |
| .purgem MLS2 |
| .endm |
| |
| |
| .macro round_sample r, idx, next |
| add \r\().2d, \r\().2d, v28.2d |
| .if \idx == 0 |
| and v28.16b, \r\().16b, v30.16b |
| .else // \idx == 1 |
| and v28.16b, \r\().16b, v31.16b |
| .endif |
| .if \idx != \next |
| .if \next == 0 |
| ext v28.16b, v28.16b, v29.16b, #8 |
| .else |
| ext v28.16b, v29.16b, v28.16b, #8 |
| .endif |
| .endif |
| .endm |
| .macro MLA d, s1, s2 |
| smlal \d\().2d, \s1\().2s, \s2\().2s |
| .endm |
| .macro MLA2 d, s1, s2 |
| smlal2 \d\().2d, \s1\().4s, \s2\().4s |
| .endm |
| .macro MLS d, s1, s2 |
| smlsl \d\().2d, \s1\().2s, \s2\().2s |
| .endm |
| .macro MLS2 d, s1, s2 |
| smlsl2 \d\().2d, \s1\().4s, \s2\().4s |
| .endm |
| apply_window fixed, h |
| |
| |
| // nothing to do for round_sample and ML{A,S}2 |
| .macro round_sample r, idx, next |
| .endm |
| .macro MLA2 d, s1, s2 |
| .endm |
| .macro MLS2 d, s1, s2 |
| .endm |
| .macro MLA d, s1, s2 |
| fmla \d\().4s, \s1\().4s, \s2\().4s |
| .endm |
| .macro MLS d, s1, s2 |
| fmls \d\().4s, \s1\().4s, \s2\().4s |
| .endm |
| apply_window float, s |
