dct-a-common.S
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/****************************************************************************
* dct-a-common.S: aarch64 transform and zigzag
*****************************************************************************
* Copyright (C) 2009-2024 x264 project
*
* Authors: David Conrad <lessen42@gmail.com>
* Janne Grunau <janne-x264@jannau.net>
* David Chen <david.chen@myais.com.cn>
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*
* This program is also available under a commercial proprietary license.
* For more information, contact us at licensing@x264.com.
*****************************************************************************/
// This file contains the NEON macros that are intended to be used by
// the SVE/SVE2 functions as well
.macro DCT_1D v0 v1 v2 v3 v4 v5 v6 v7
SUMSUB_AB \v1, \v6, \v5, \v6
SUMSUB_AB \v3, \v7, \v4, \v7
add \v0, \v3, \v1
add \v4, \v7, \v7
add \v5, \v6, \v6
sub \v2, \v3, \v1
add \v1, \v4, \v6
sub \v3, \v7, \v5
.endm