41 lines
1.7 KiB
ArmAsm
41 lines
1.7 KiB
ArmAsm
/****************************************************************************
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* dct-a-common.S: aarch64 transform and zigzag
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*****************************************************************************
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* Copyright (C) 2009-2025 x264 project
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*
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* Authors: David Conrad <lessen42@gmail.com>
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* Janne Grunau <janne-x264@jannau.net>
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* David Chen <david.chen@myais.com.cn>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
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*
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* This program is also available under a commercial proprietary license.
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* For more information, contact us at licensing@x264.com.
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*****************************************************************************/
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// This file contains the NEON macros that are intended to be used by
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// the SVE/SVE2 functions as well
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.macro DCT_1D v0 v1 v2 v3 v4 v5 v6 v7
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SUMSUB_AB \v1, \v6, \v5, \v6
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SUMSUB_AB \v3, \v7, \v4, \v7
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add \v0, \v3, \v1
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add \v4, \v7, \v7
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add \v5, \v6, \v6
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sub \v2, \v3, \v1
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add \v1, \v4, \v6
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sub \v3, \v7, \v5
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.endm
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