91 lines
2.9 KiB
ArmAsm
91 lines
2.9 KiB
ArmAsm
/****************************************************************************
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* dct-a-sve2.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 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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#include "asm.S"
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#include "dct-a-common.S"
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ENABLE_SVE
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ENABLE_SVE2
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function add4x4_idct_sve2, export=1
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mov x2, #FDEC_STRIDE
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mov x11, x0
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ptrue p0.h, vl8
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ptrue p1.h, vl4
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ld1 {v0.8h, v1.8h}, [x1]
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SUMSUB_AB v4.8h, v5.8h, v0.8h, v1.8h
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sshr v7.8h, v0.8h, #1
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sshr v6.8h, v1.8h, #1
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sub v7.8h, v7.8h, v1.8h
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add v6.8h, v6.8h, v0.8h
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mov v7.d[0], v7.d[1]
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mov v6.d[0], v6.d[1]
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ld1b {z28.h}, p0/z, [x11]
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add x11, x11, x2
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SUMSUB_AB v0.8h, v2.8h, v4.8h, v6.8h
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SUMSUB_AB v1.8h, v3.8h, v5.8h, v7.8h
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transpose4x4.h v0, v1, v3, v2, v16, v17, v18, v19
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SUMSUB_AB v4.4h, v5.4h, v0.4h, v3.4h
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sshr v7.4h, v1.4h, #1
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sshr v6.4h, v2.4h, #1
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sub v7.4h, v7.4h, v2.4h
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add v6.4h, v6.4h, v1.4h
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ld1b {z29.h}, p0/z, [x11]
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add x11, x11, x2
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SUMSUB_AB v0.4h, v2.4h, v4.4h, v6.4h
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SUMSUB_AB v1.4h, v3.4h, v5.4h, v7.4h
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srshr z0.h, p1/m, z0.h, #6
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srshr z1.h, p1/m, z1.h, #6
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ld1b {z31.h}, p0/z, [x11]
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add x11, x11, x2
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srshr z2.h, p1/m, z2.h, #6
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srshr z3.h, p1/m, z3.h, #6
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ld1b {z30.h}, p0/z, [x11]
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add v0.8h, v0.8h, v28.8h
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add v1.8h, v1.8h, v29.8h
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add v2.8h, v2.8h, v30.8h
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add v3.8h, v3.8h, v31.8h
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sqxtunb z0.b, z0.h
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sqxtunb z1.b, z1.h
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sqxtunb z2.b, z2.h
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sqxtunb z3.b, z3.h
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st1b {z0.h}, p1, [x0]
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add x0, x0, x2
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st1b {z1.h}, p1, [x0]
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add x0, x0, x2
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st1b {z3.h}, p1, [x0]
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add x0, x0, x2
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st1b {z2.h}, p1, [x0]
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ret
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endfunc
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