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- /*
- * ARM NEON optimised DSP functions
- * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
- *
- * This file is part of Libav.
- *
- * Libav 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.
- *
- * Libav 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 Libav; 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_vorbis_inverse_coupling_neon, export=1
- vmov.i32 q10, #1<<31
- subs r2, r2, #4
- mov r3, r0
- mov r12, r1
- beq 3f
-
- vld1.32 {d24-d25},[r1,:128]!
- vld1.32 {d22-d23},[r0,:128]!
- vcle.s32 q8, q12, #0
- vand q9, q11, q10
- veor q12, q12, q9
- vand q2, q12, q8
- vbic q3, q12, q8
- vadd.f32 q12, q11, q2
- vsub.f32 q11, q11, q3
- 1: vld1.32 {d2-d3}, [r1,:128]!
- vld1.32 {d0-d1}, [r0,:128]!
- vcle.s32 q8, q1, #0
- vand q9, q0, q10
- veor q1, q1, q9
- vst1.32 {d24-d25},[r3, :128]!
- vst1.32 {d22-d23},[r12,:128]!
- vand q2, q1, q8
- vbic q3, q1, q8
- vadd.f32 q1, q0, q2
- vsub.f32 q0, q0, q3
- subs r2, r2, #8
- ble 2f
- vld1.32 {d24-d25},[r1,:128]!
- vld1.32 {d22-d23},[r0,:128]!
- vcle.s32 q8, q12, #0
- vand q9, q11, q10
- veor q12, q12, q9
- vst1.32 {d2-d3}, [r3, :128]!
- vst1.32 {d0-d1}, [r12,:128]!
- vand q2, q12, q8
- vbic q3, q12, q8
- vadd.f32 q12, q11, q2
- vsub.f32 q11, q11, q3
- b 1b
-
- 2: vst1.32 {d2-d3}, [r3, :128]!
- vst1.32 {d0-d1}, [r12,:128]!
- it lt
- bxlt lr
-
- 3: vld1.32 {d2-d3}, [r1,:128]
- vld1.32 {d0-d1}, [r0,:128]
- vcle.s32 q8, q1, #0
- vand q9, q0, q10
- veor q1, q1, q9
- vand q2, q1, q8
- vbic q3, q1, q8
- vadd.f32 q1, q0, q2
- vsub.f32 q0, q0, q3
- vst1.32 {d2-d3}, [r0,:128]!
- vst1.32 {d0-d1}, [r1,:128]!
- bx lr
- endfunc
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