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/*
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* Copyright (c) 2024 Institue of Software Chinese Academy of Sciences (ISCAS).
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/riscv/asm.S"
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func ff_rv34_inv_transform_dc_rvv, zve32x
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lh t1, 0(a0)
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li t0, 13 * 13 * 3
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mul t2, t0, t1
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srai t2, t2, 11
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vsetivli zero, 16, e16, m2, ta, ma
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vmv.v.x v8, t2
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vse16.v v8, (a0)
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ret
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endfunc
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func ff_rv34_idct_dc_add_rvv, zve32x
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vsetivli zero, 4, e8, mf4, ta, ma
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vlse32.v v0, (a0), a1
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li t1, 169
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mul t1, t1, a2
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li a2, 255
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addi t1, t1, 512
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srai t1, t1, 10
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vsetivli zero, 4*4, e16, m2, ta, ma
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vzext.vf2 v2, v0
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vadd.vx v2, v2, t1
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vmax.vx v2, v2, zero
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vsetvli zero, zero, e8, m1, ta, ma
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vnclipu.wi v0, v2, 0
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vsetivli zero, 4, e8, mf4, ta, ma
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vsse32.v v0, (a0), a1
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ret
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endfunc
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