diff options
Diffstat (limited to 'ffmpeg1/libavcodec/arm/dcadsp_neon.S')
| -rw-r--r-- | ffmpeg1/libavcodec/arm/dcadsp_neon.S | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/ffmpeg1/libavcodec/arm/dcadsp_neon.S b/ffmpeg1/libavcodec/arm/dcadsp_neon.S new file mode 100644 index 0000000..6a6c77a --- /dev/null +++ b/ffmpeg1/libavcodec/arm/dcadsp_neon.S @@ -0,0 +1,61 @@ +/* + * 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_dca_lfe_fir_neon, export=1 + push {r4-r6,lr} + + add r4, r0, r3, lsl #2 @ out2 + add r5, r2, #256*4-16 @ cf1 + sub r1, r1, #12 + cmp r3, #32 + ite eq + moveq r6, #256/32 + movne r6, #256/64 +NOVFP vldr s0, [sp, #16] @ scale + mov lr, #-16 +1: + vmov.f32 q2, #0.0 @ v0 + vmov.f32 q3, #0.0 @ v1 + mov r12, r6 +2: + vld1.32 {q8}, [r2,:128]! @ cf0 + vld1.32 {q9}, [r5,:128], lr @ cf1 + vld1.32 {q1}, [r1], lr @ in + subs r12, r12, #4 + vrev64.32 q10, q8 + vmla.f32 q3, q1, q9 + vmla.f32 d4, d2, d21 + vmla.f32 d5, d3, d20 + bne 2b + + add r1, r1, r6, lsl #2 + subs r3, r3, #1 + vadd.f32 d4, d4, d5 + vadd.f32 d6, d6, d7 + vpadd.f32 d4, d4, d6 + vmul.f32 d5, d4, d0[0] + vst1.32 {d5[0]}, [r0,:32]! + vst1.32 {d5[1]}, [r4,:32]! + bne 1b + + pop {r4-r6,pc} +endfunc |