mirror of
https://github.com/librempeg/librempeg
synced 2024-11-22 18:49:58 +00:00
119 lines
3.2 KiB
ArmAsm
119 lines
3.2 KiB
ArmAsm
/*
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* Copyright © 2024 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_range_lum_to_jpeg_16_rvv, zve32x, zba
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lpad 0
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li t1, 30189
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li t2, 19077
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li t3, -39057361
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1:
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vsetvli t0, a1, e16, m4, ta, ma
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vle16.v v0, (a0)
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sub a1, a1, t0
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vmin.vx v0, v0, t1
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vwmul.vx v8, v0, t2
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vsetvli zero, zero, e32, m8, ta, ma
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vadd.vx v8, v8, t3
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vsetvli zero, zero, e16, m4, ta, ma
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vnsra.wi v0, v8, 14
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vse16.v v0, (a0)
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sh1add a0, t0, a0
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bnez a1, 1b
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ret
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endfunc
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func ff_range_lum_from_jpeg_16_rvv, zve32x, zba
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lpad 0
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li t1, 14071
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li t2, 33561947
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1:
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vsetvli t0, a1, e16, m4, ta, ma
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vle16.v v0, (a0)
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sub a1, a1, t0
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vwmul.vx v8, v0, t1
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vsetvli zero, zero, e32, m8, ta, ma
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vadd.vx v8, v8, t2
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vsetvli zero, zero, e16, m4, ta, ma
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vnsra.wi v0, v8, 14
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vse16.v v0, (a0)
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sh1add a0, t0, a0
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bnez a1, 1b
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ret
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endfunc
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func ff_range_chr_to_jpeg_16_rvv, zve32x, zba
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lpad 0
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li t1, 30775
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li t2, 4663
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li t3, -9289992
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1:
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vsetvli t0, a2, e16, m4, ta, ma
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vle16.v v0, (a0)
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sub a2, a2, t0
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vle16.v v4, (a1)
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vmin.vx v0, v0, t1
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vmin.vx v4, v4, t1
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vwmul.vx v8, v0, t2
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vwmul.vx v16, v4, t2
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vsetvli zero, zero, e32, m8, ta, ma
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vadd.vx v8, v8, t3
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vadd.vx v16, v16, t3
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vsetvli zero, zero, e16, m4, ta, ma
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vnsra.wi v0, v8, 12
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vnsra.wi v4, v16, 12
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vse16.v v0, (a0)
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sh1add a0, t0, a0
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vse16.v v4, (a1)
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sh1add a1, t0, a1
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bnez a2, 1b
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ret
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endfunc
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func ff_range_chr_from_jpeg_16_rvv, zve32x, zba
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lpad 0
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li t1, 1799
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li t2, 4081085
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1:
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vsetvli t0, a2, e16, m4, ta, ma
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vle16.v v0, (a0)
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sub a2, a2, t0
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vle16.v v4, (a1)
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vwmul.vx v8, v0, t1
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vwmul.vx v16, v4, t1
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vsetvli zero, zero, e32, m8, ta, ma
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vadd.vx v8, v8, t2
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vadd.vx v16, v16, t2
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vsetvli zero, zero, e16, m4, ta, ma
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vnsra.wi v0, v8, 11
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vnsra.wi v4, v16, 11
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vse16.v v0, (a0)
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sh1add a0, t0, a0
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vse16.v v0, (a1)
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sh1add a1, t0, a1
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bnez a2, 1b
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ret
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endfunc
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