mirror of https://git.ffmpeg.org/ffmpeg.git
67 lines
2.4 KiB
ArmAsm
67 lines
2.4 KiB
ArmAsm
|
/*
|
||
|
|
* 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 "config.h"
|
||
|
|
#include "libavutil/arm/asm.S"
|
||
|
|
|
||
|
|
function ff_conv_flt_to_s16_neon, export=1
|
||
|
|
subs r2, r2, #8
|
||
|
|
vld1.32 {q0}, [r1,:128]!
|
||
|
|
vcvt.s32.f32 q8, q0, #31
|
||
|
|
vld1.32 {q1}, [r1,:128]!
|
||
|
|
vcvt.s32.f32 q9, q1, #31
|
||
|
|
beq 3f
|
||
|
|
bics r12, r2, #15
|
||
|
|
beq 2f
|
||
|
|
1: subs r12, r12, #16
|
||
|
|
vqrshrn.s32 d4, q8, #16
|
||
|
|
vld1.32 {q0}, [r1,:128]!
|
||
|
|
vcvt.s32.f32 q0, q0, #31
|
||
|
|
vqrshrn.s32 d5, q9, #16
|
||
|
|
vld1.32 {q1}, [r1,:128]!
|
||
|
|
vcvt.s32.f32 q1, q1, #31
|
||
|
|
vqrshrn.s32 d6, q0, #16
|
||
|
|
vst1.16 {q2}, [r0,:128]!
|
||
|
|
vqrshrn.s32 d7, q1, #16
|
||
|
|
vld1.32 {q8}, [r1,:128]!
|
||
|
|
vcvt.s32.f32 q8, q8, #31
|
||
|
|
vld1.32 {q9}, [r1,:128]!
|
||
|
|
vcvt.s32.f32 q9, q9, #31
|
||
|
|
vst1.16 {q3}, [r0,:128]!
|
||
|
|
bne 1b
|
||
|
|
ands r2, r2, #15
|
||
|
|
beq 3f
|
||
|
|
2: vld1.32 {q0}, [r1,:128]!
|
||
|
|
vqrshrn.s32 d4, q8, #16
|
||
|
|
vcvt.s32.f32 q0, q0, #31
|
||
|
|
vld1.32 {q1}, [r1,:128]!
|
||
|
|
vqrshrn.s32 d5, q9, #16
|
||
|
|
vcvt.s32.f32 q1, q1, #31
|
||
|
|
vqrshrn.s32 d6, q0, #16
|
||
|
|
vst1.16 {q2}, [r0,:128]!
|
||
|
|
vqrshrn.s32 d7, q1, #16
|
||
|
|
vst1.16 {q3}, [r0,:128]!
|
||
|
|
bx lr
|
||
|
|
3: vqrshrn.s32 d4, q8, #16
|
||
|
|
vqrshrn.s32 d5, q9, #16
|
||
|
|
vst1.16 {q2}, [r0,:128]!
|
||
|
|
bx lr
|
||
|
|
endfunc
|