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https://github.com/FFmpeg/FFmpeg.git
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67 lines
2.1 KiB
ArmAsm
67 lines
2.1 KiB
ArmAsm
/*
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* Copyright © 2022 Rémi Denis-Courmont.
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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_put_pixels_clamped_rvv, zve64x
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lpad 0
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li t0, 8 * 8
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vsetvli zero, t0, e16, m8, ta, ma
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vle16.v v24, (a0)
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/* RVV only has signed-signed and unsigned-unsigned clipping.
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* We need two steps for signed-to-unsigned clipping. */
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vmax.vx v24, v24, zero
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vsetvli zero, zero, e8, m4, ta, ma
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vnclipu.wi v16, v24, 0
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vsetivli zero, 8, e8, mf2, ta, ma
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vsse64.v v16, (a1), a2
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ret
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endfunc
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func ff_put_signed_pixels_clamped_rvv, zve64x
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lpad 0
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li t0, 8 * 8
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vsetvli zero, t0, e8, m4, ta, ma
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vle16.v v24, (a0)
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li t1, 128
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vnclip.wi v16, v24, 0
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vadd.vx v16, v16, t1
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vsetivli zero, 8, e8, mf2, ta, ma
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vsse64.v v16, (a1), a2
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ret
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endfunc
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func ff_add_pixels_clamped_rvv, zve64x
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lpad 0
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vsetivli zero, 8, e8, mf2, ta, ma
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li t0, 8 * 8
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vlse64.v v16, (a1), a2
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vsetvli zero, t0, e8, m4, ta, ma
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vle16.v v24, (a0)
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vwaddu.wv v24, v24, v16
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vsetvli zero, zero, e16, m8, ta, ma
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vmax.vx v24, v24, zero
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vsetvli zero, zero, e8, m4, ta, ma
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vnclipu.wi v16, v24, 0
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vsetivli zero, 8, e8, mf2, ta, ma
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vsse64.v v16, (a1), a2
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ret
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endfunc
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