| /* |
| * Copyright (c) 2011 Mans Rullgard <mans@mansr.com> |
| * |
| * 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/arm/asm.S" |
| |
| .macro prerot dst, rt |
| lsr r3, r6, #2 @ n4 |
| add \rt, r4, r6, lsr #1 @ revtab + n4 |
| add r9, r3, r3, lsl #1 @ n3 |
| add r8, r7, r6 @ tcos + n4 |
| add r3, r2, r6, lsr #1 @ in + n4 |
| add r9, r2, r9, lsl #1 @ in + n3 |
| sub r8, r8, #16 |
| sub r10, r3, #16 |
| sub r11, r9, #16 |
| mov r12, #-16 |
| 1: |
| vld2.16 {d0,d1}, [r9, :128]! |
| vld2.16 {d2,d3}, [r11,:128], r12 |
| vld2.16 {d4,d5}, [r3, :128]! |
| vld2.16 {d6,d7}, [r10,:128], r12 |
| vld2.16 {d16,d17},[r7, :128]! @ cos, sin |
| vld2.16 {d18,d19},[r8, :128], r12 |
| vrev64.16 q1, q1 |
| vrev64.16 q3, q3 |
| vrev64.16 q9, q9 |
| vneg.s16 d0, d0 |
| vneg.s16 d2, d2 |
| vneg.s16 d16, d16 |
| vneg.s16 d18, d18 |
| vhsub.s16 d0, d0, d3 @ re |
| vhsub.s16 d4, d7, d4 @ im |
| vhsub.s16 d6, d6, d5 |
| vhsub.s16 d2, d2, d1 |
| vmull.s16 q10, d0, d16 |
| vmlsl.s16 q10, d4, d17 |
| vmull.s16 q11, d0, d17 |
| vmlal.s16 q11, d4, d16 |
| vmull.s16 q12, d6, d18 |
| vmlsl.s16 q12, d2, d19 |
| vmull.s16 q13, d6, d19 |
| vmlal.s16 q13, d2, d18 |
| vshrn.s32 d0, q10, #15 |
| vshrn.s32 d1, q11, #15 |
| vshrn.s32 d2, q12, #15 |
| vshrn.s32 d3, q13, #15 |
| vzip.16 d0, d1 |
| vzip.16 d2, d3 |
| ldrh lr, [r4], #2 |
| ldrh r2, [\rt, #-2]! |
| add lr, \dst, lr, lsl #2 |
| add r2, \dst, r2, lsl #2 |
| vst1.32 {d0[0]}, [lr,:32] |
| vst1.32 {d2[0]}, [r2,:32] |
| ldrh lr, [r4], #2 |
| ldrh r2, [\rt, #-2]! |
| add lr, \dst, lr, lsl #2 |
| add r2, \dst, r2, lsl #2 |
| vst1.32 {d0[1]}, [lr,:32] |
| vst1.32 {d2[1]}, [r2,:32] |
| ldrh lr, [r4], #2 |
| ldrh r2, [\rt, #-2]! |
| add lr, \dst, lr, lsl #2 |
| add r2, \dst, r2, lsl #2 |
| vst1.32 {d1[0]}, [lr,:32] |
| vst1.32 {d3[0]}, [r2,:32] |
| ldrh lr, [r4], #2 |
| ldrh r2, [\rt, #-2]! |
| add lr, \dst, lr, lsl #2 |
| add r2, \dst, r2, lsl #2 |
| vst1.32 {d1[1]}, [lr,:32] |
| vst1.32 {d3[1]}, [r2,:32] |
| subs r6, r6, #32 |
| bgt 1b |
| .endm |
| |
| function ff_mdct_fixed_calc_neon, export=1 |
| push {r1,r4-r11,lr} |
| |
| ldr r4, [r0, #8] @ revtab |
| ldr r6, [r0, #16] @ mdct_size; n |
| ldr r7, [r0, #24] @ tcos |
| |
| prerot r1, r5 |
| |
| mov r4, r0 |
| bl X(ff_fft_fixed_calc_neon) |
| |
| pop {r5} |
| mov r12, #-16 |
| ldr r6, [r4, #16] @ mdct_size; n |
| ldr r7, [r4, #24] @ tcos |
| add r5, r5, r6, lsr #1 |
| add r7, r7, r6, lsr #1 |
| sub r1, r5, #16 |
| sub r2, r7, #16 |
| 1: |
| vld2.16 {d4,d5}, [r7,:128]! |
| vld2.16 {d6,d7}, [r2,:128], r12 |
| vld2.16 {d0,d1}, [r5,:128] |
| vld2.16 {d2,d3}, [r1,:128] |
| vrev64.16 q3, q3 |
| vrev64.16 q1, q1 |
| vneg.s16 q3, q3 |
| vneg.s16 q2, q2 |
| vmull.s16 q11, d2, d6 |
| vmlal.s16 q11, d3, d7 |
| vmull.s16 q8, d0, d5 |
| vmlsl.s16 q8, d1, d4 |
| vmull.s16 q9, d0, d4 |
| vmlal.s16 q9, d1, d5 |
| vmull.s16 q10, d2, d7 |
| vmlsl.s16 q10, d3, d6 |
| vshrn.s32 d0, q11, #15 |
| vshrn.s32 d1, q8, #15 |
| vshrn.s32 d2, q9, #15 |
| vshrn.s32 d3, q10, #15 |
| vrev64.16 q0, q0 |
| vst2.16 {d2,d3}, [r5,:128]! |
| vst2.16 {d0,d1}, [r1,:128], r12 |
| subs r6, r6, #32 |
| bgt 1b |
| |
| pop {r4-r11,pc} |
| endfunc |
| |
| function ff_mdct_fixed_calcw_neon, export=1 |
| push {r1,r4-r11,lr} |
| |
| ldrd r4, r5, [r0, #8] @ revtab, tmp_buf |
| ldr r6, [r0, #16] @ mdct_size; n |
| ldr r7, [r0, #24] @ tcos |
| |
| prerot r5, r1 |
| |
| mov r4, r0 |
| mov r1, r5 |
| bl X(ff_fft_fixed_calc_neon) |
| |
| pop {r7} |
| mov r12, #-16 |
| ldr r6, [r4, #16] @ mdct_size; n |
| ldr r9, [r4, #24] @ tcos |
| add r5, r5, r6, lsr #1 |
| add r7, r7, r6 |
| add r9, r9, r6, lsr #1 |
| sub r3, r5, #16 |
| sub r1, r7, #16 |
| sub r2, r9, #16 |
| 1: |
| vld2.16 {d4,d5}, [r9,:128]! |
| vld2.16 {d6,d7}, [r2,:128], r12 |
| vld2.16 {d0,d1}, [r5,:128]! |
| vld2.16 {d2,d3}, [r3,:128], r12 |
| vrev64.16 q3, q3 |
| vrev64.16 q1, q1 |
| vneg.s16 q3, q3 |
| vneg.s16 q2, q2 |
| vmull.s16 q8, d2, d6 |
| vmlal.s16 q8, d3, d7 |
| vmull.s16 q9, d0, d5 |
| vmlsl.s16 q9, d1, d4 |
| vmull.s16 q10, d0, d4 |
| vmlal.s16 q10, d1, d5 |
| vmull.s16 q11, d2, d7 |
| vmlsl.s16 q11, d3, d6 |
| vrev64.32 q8, q8 |
| vrev64.32 q9, q9 |
| vst2.32 {q10,q11},[r7,:128]! |
| vst2.32 {d16,d18},[r1,:128], r12 |
| vst2.32 {d17,d19},[r1,:128], r12 |
| subs r6, r6, #32 |
| bgt 1b |
| |
| pop {r4-r11,pc} |
| endfunc |
