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114 lines
3.7 KiB
114 lines
3.7 KiB
/* |
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* Copyright (c) 2011 Mans Rullgard <mans@mansr.com> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "libavutil/arm/asm.S" |
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function ff_ac3_exponent_min_neon, export=1 |
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cmp r1, #0 |
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it eq |
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bxeq lr |
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push {lr} |
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mov r12, #256 |
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1: |
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vld1.8 {q0}, [r0,:128] |
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mov lr, r1 |
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add r3, r0, #256 |
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2: vld1.8 {q1}, [r3,:128], r12 |
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subs lr, lr, #1 |
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vmin.u8 q0, q0, q1 |
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bgt 2b |
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subs r2, r2, #16 |
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vst1.8 {q0}, [r0,:128]! |
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bgt 1b |
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pop {pc} |
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endfunc |
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function ff_float_to_fixed24_neon, export=1 |
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1: vld1.32 {q0-q1}, [r1,:128]! |
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vcvt.s32.f32 q0, q0, #24 |
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vld1.32 {q2-q3}, [r1,:128]! |
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vcvt.s32.f32 q1, q1, #24 |
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vcvt.s32.f32 q2, q2, #24 |
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vst1.32 {q0-q1}, [r0,:128]! |
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vcvt.s32.f32 q3, q3, #24 |
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vst1.32 {q2-q3}, [r0,:128]! |
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subs r2, r2, #16 |
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bgt 1b |
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bx lr |
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endfunc |
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function ff_ac3_extract_exponents_neon, export=1 |
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vmov.i32 q15, #8 |
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1: |
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vld1.32 {q0}, [r1,:128]! |
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vabs.s32 q1, q0 |
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vclz.i32 q3, q1 |
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vsub.i32 q3, q3, q15 |
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vmovn.i32 d6, q3 |
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vmovn.i16 d6, q3 |
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vst1.32 {d6[0]}, [r0,:32]! |
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subs r2, r2, #4 |
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bgt 1b |
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bx lr |
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endfunc |
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function ff_ac3_sum_square_butterfly_int32_neon, export=1 |
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vmov.i64 q0, #0 |
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vmov.i64 q1, #0 |
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vmov.i64 q2, #0 |
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vmov.i64 q3, #0 |
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1: |
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vld1.32 {d16}, [r1]! |
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vld1.32 {d17}, [r2]! |
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vadd.s32 d18, d16, d17 |
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vsub.s32 d19, d16, d17 |
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vmlal.s32 q0, d16, d16 |
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vmlal.s32 q1, d17, d17 |
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vmlal.s32 q2, d18, d18 |
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vmlal.s32 q3, d19, d19 |
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subs r3, r3, #2 |
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bgt 1b |
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vadd.s64 d0, d0, d1 |
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vadd.s64 d1, d2, d3 |
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vadd.s64 d2, d4, d5 |
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vadd.s64 d3, d6, d7 |
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vst1.64 {q0-q1}, [r0] |
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bx lr |
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endfunc |
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function ff_ac3_sum_square_butterfly_float_neon, export=1 |
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vmov.f32 q0, #0.0 |
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vmov.f32 q1, #0.0 |
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1: |
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vld1.32 {d16}, [r1]! |
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vld1.32 {d17}, [r2]! |
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vadd.f32 d18, d16, d17 |
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vsub.f32 d19, d16, d17 |
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vmla.f32 d0, d16, d16 |
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vmla.f32 d1, d17, d17 |
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vmla.f32 d2, d18, d18 |
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vmla.f32 d3, d19, d19 |
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subs r3, r3, #2 |
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bgt 1b |
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vpadd.f32 d0, d0, d1 |
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vpadd.f32 d1, d2, d3 |
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vst1.32 {q0}, [r0] |
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bx lr |
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endfunc
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