aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* ARM NEON optimised Format Conversion Utils
* Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
* Copyright (c) 2015 Janne Grunau <janne-libav@jannau.net>b
*
* 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 "config.h"
#include "libavutil/arm/asm.S"
function ff_int32_to_float_fmul_scalar_neon, export=1
VFP vdup.32 q0, d0[0]
VFP len .req r2
NOVFP vdup.32 q0, r2
NOVFP len .req r3
vld1.32 {q1},[r1,:128]!
vcvt.f32.s32 q3, q1
vld1.32 {q2},[r1,:128]!
vcvt.f32.s32 q8, q2
1: subs len, len, #8
pld [r1, #16]
vmul.f32 q9, q3, q0
vmul.f32 q10, q8, q0
beq 2f
vld1.32 {q1},[r1,:128]!
vcvt.f32.s32 q3, q1
vld1.32 {q2},[r1,:128]!
vcvt.f32.s32 q8, q2
vst1.32 {q9}, [r0,:128]!
vst1.32 {q10},[r0,:128]!
b 1b
2: vst1.32 {q9}, [r0,:128]!
vst1.32 {q10},[r0,:128]!
bx lr
.unreq len
endfunc
function ff_int32_to_float_fmul_array8_neon, export=1
ldr r0, [sp]
lsr r0, r0, #3
subs r0, r0, #1
beq 1f
2:
vld1.32 {q0-q1}, [r2,:128]!
vld1.32 {q2-q3}, [r2,:128]!
vld1.32 {d20}, [r3]!
subs r0, r0, #2
vcvt.f32.s32 q0, q0
vcvt.f32.s32 q1, q1
vdup.32 q8, d20[0]
vcvt.f32.s32 q2, q2
vcvt.f32.s32 q3, q3
vmul.f32 q0, q0, q8
vdup.32 q9, d20[1]
vmul.f32 q1, q1, q8
vmul.f32 q2, q2, q9
vmul.f32 q3, q3, q9
vst1.32 {q0-q1}, [r1,:128]!
vst1.32 {q2-q3}, [r1,:128]!
bgt 2b
it lt
bxlt lr
1:
vld1.32 {q0-q1}, [r2,:128]
vld1.32 {d16[],d17[]}, [r3]
vcvt.f32.s32 q0, q0
vcvt.f32.s32 q1, q1
vmul.f32 q0, q0, q8
vmul.f32 q1, q1, q8
vst1.32 {q0-q1}, [r1,:128]
bx lr
endfunc
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