| /* |
| * Copyright © 2022 Rémi Denis-Courmont. |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "libavutil/riscv/asm.S" |
| |
| func ff_put_pixels_clamped_rvv, zve64x |
| li t0, 8 * 8 |
| vsetvli zero, t0, e16, m8, ta, ma |
| vle16.v v24, (a0) |
| /* RVV only has signed-signed and unsigned-unsigned clipping. |
| * We need two steps for signed-to-unsigned clipping. */ |
| vmax.vx v24, v24, zero |
| vsetvli zero, zero, e8, m4, ta, ma |
| vnclipu.wi v16, v24, 0 |
| vsetivli zero, 8, e8, mf2, ta, ma |
| vsse64.v v16, (a1), a2 |
| ret |
| endfunc |
| |
| func ff_put_signed_pixels_clamped_rvv, zve64x |
| li t0, 8 * 8 |
| vsetvli zero, t0, e8, m4, ta, ma |
| vle16.v v24, (a0) |
| li t1, 128 |
| vnclip.wi v16, v24, 0 |
| vadd.vx v16, v16, t1 |
| vsetivli zero, 8, e8, mf2, ta, ma |
| vsse64.v v16, (a1), a2 |
| ret |
| endfunc |
| |
| func ff_add_pixels_clamped_rvv, zve64x |
| vsetivli zero, 8, e8, mf2, ta, ma |
| li t0, 8 * 8 |
| vlse64.v v16, (a1), a2 |
| vsetvli zero, t0, e8, m4, ta, ma |
| vle16.v v24, (a0) |
| vwaddu.wv v24, v24, v16 |
| vsetvli zero, zero, e16, m8, ta, ma |
| vmax.vx v24, v24, zero |
| vsetvli zero, zero, e8, m4, ta, ma |
| vnclipu.wi v16, v24, 0 |
| vsetivli zero, 8, e8, mf2, ta, ma |
| vsse64.v v16, (a1), a2 |
| ret |
| endfunc |
