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53 lines
1.8 KiB
53 lines
1.8 KiB
/* |
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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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