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FFmpeg/libavcodec/aarch64/ac3dsp_neon.S
Geoff Hill b69486ea18 avcodec/ac3: Implement float_to_fixed24 for aarch64 NEON
Signed-off-by: Geoff Hill <geoff@geoffhill.org>
Signed-off-by: Martin Storsjö <martin@martin.st>
2024-04-08 13:36:28 +03:00

37 lines
1.4 KiB
ArmAsm

/*
* Copyright (c) 2011 Mans Rullgard <mans@mansr.com>
* Copyright (c) 2024 Geoff Hill <geoff@geoffhill.org>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU 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/aarch64/asm.S"
function ff_float_to_fixed24_neon, export=1
1: ld1 {v0.4s, v1.4s}, [x1], #32
fcvtzs v0.4s, v0.4s, #24
ld1 {v2.4s, v3.4s}, [x1], #32
fcvtzs v1.4s, v1.4s, #24
fcvtzs v2.4s, v2.4s, #24
st1 {v0.4s, v1.4s}, [x0], #32
fcvtzs v3.4s, v3.4s, #24
st1 {v2.4s, v3.4s}, [x0], #32
subs w2, w2, #16
b.ne 1b
ret
endfunc