| /* |
| * Copyright (c) 2010 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" |
| |
| function ff_synth_filter_float_neon, export=1 |
| push {r3-r11,lr} |
| |
| ldr r4, [r2] @ synth_buf_offset |
| add r1, r1, r4, lsl #2 @ synth_buf |
| sub r12, r4, #32 |
| bfc r12, #9, #23 |
| bic r4, r4, #63 |
| str r12, [r2] |
| |
| ldr r2, [sp, #12*4] @ in |
| mov r9, r1 @ synth_buf |
| |
| VFP vpush {d0} |
| bl X(ff_imdct_half_neon) |
| VFP vpop {d0} |
| pop {r3} |
| |
| ldr r5, [sp, #9*4] @ window |
| ldr r2, [sp, #10*4] @ out |
| NOVFP vldr s0, [sp, #12*4] @ scale |
| add r8, r9, #12*4 |
| |
| mov lr, #64*4 |
| mov r1, #4 |
| 1: |
| add r10, r9, #16*4 @ synth_buf |
| add r11, r8, #16*4 |
| add r0, r5, #16*4 @ window |
| add r6, r5, #32*4 |
| add r7, r5, #48*4 |
| |
| vld1.32 {q10}, [r3,:128] @ a |
| add r3, r3, #16*4 |
| vld1.32 {q1}, [r3,:128] @ b |
| vmov.f32 q2, #0.0 @ c |
| vmov.f32 q3, #0.0 @ d |
| |
| mov r12, #512 |
| 2: |
| vld1.32 {q9}, [r8, :128], lr |
| vrev64.32 q9, q9 |
| vld1.32 {q8}, [r5, :128], lr |
| vmls.f32 d20, d16, d19 |
| vld1.32 {q11}, [r0, :128], lr |
| vmls.f32 d21, d17, d18 |
| vld1.32 {q12}, [r9, :128], lr |
| vmla.f32 d2, d22, d24 |
| vld1.32 {q8}, [r6, :128], lr |
| vmla.f32 d3, d23, d25 |
| vld1.32 {q9}, [r10,:128], lr |
| vmla.f32 d4, d16, d18 |
| vld1.32 {q12}, [r11,:128], lr |
| vmla.f32 d5, d17, d19 |
| vrev64.32 q12, q12 |
| vld1.32 {q11}, [r7, :128], lr |
| vmla.f32 d6, d22, d25 |
| vmla.f32 d7, d23, d24 |
| subs r12, r12, #64 |
| beq 3f |
| cmp r12, r4 |
| bne 2b |
| sub r8, r8, #512*4 |
| sub r9, r9, #512*4 |
| sub r10, r10, #512*4 |
| sub r11, r11, #512*4 |
| b 2b |
| 3: |
| vmul.f32 q8, q10, d0[0] |
| vmul.f32 q9, q1, d0[0] |
| vst1.32 {q3}, [r3,:128] |
| sub r3, r3, #16*4 |
| vst1.32 {q2}, [r3,:128] |
| vst1.32 {q8}, [r2,:128] |
| add r2, r2, #16*4 |
| vst1.32 {q9}, [r2,:128] |
| |
| subs r1, r1, #1 |
| it eq |
| popeq {r4-r11,pc} |
| |
| cmp r4, #0 |
| itt eq |
| subeq r8, r8, #512*4 |
| subeq r9, r9, #512*4 |
| sub r5, r5, #512*4 |
| sub r2, r2, #12*4 @ out |
| add r3, r3, #4*4 @ synth_buf2 |
| add r5, r5, #4*4 @ window |
| add r9, r9, #4*4 @ synth_buf |
| sub r8, r8, #4*4 @ synth_buf |
| b 1b |
| endfunc |