| /* |
| * Copyright (c) 2023 Institue of Software Chinese Academy of Sciences (ISCAS). |
| * |
| * 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 "config.h" |
| #include "libavutil/riscv/asm.S" |
| |
| func ff_ac3_exponent_min_rvv, zve32x |
| beqz a1, 3f |
| 1: |
| vsetvli t2, a2, e8, m8, ta, ma |
| vle8.v v8, (a0) |
| addi t0, a0, 256 |
| sub a2, a2, t2 |
| mv t1, a1 |
| 2: |
| vle8.v v16, (t0) |
| addi t1, t1, -1 |
| vminu.vv v8, v8, v16 |
| addi t0, t0, 256 |
| bnez t1, 2b |
| |
| vse8.v v8, (a0) |
| add a0, a0, t2 |
| bnez a2, 1b |
| 3: |
| ret |
| endfunc |
| |
| func ff_float_to_fixed24_rvv, zve32f |
| li t1, 1 << 24 |
| fcvt.s.w f0, t1 |
| 1: |
| vsetvli t0, a2, e32, m8, ta, ma |
| sub a2, a2, t0 |
| vle32.v v0, (a1) |
| vfmul.vf v0, v0, f0 |
| vfcvt.x.f.v v0, v0 |
| sh2add a1, t0, a1 |
| vse32.v v0, (a0) |
| sh2add a0, t0, a0 |
| bnez a2, 1b |
| |
| ret |
| endfunc |
| |
| #if __riscv_xlen >= 64 |
| func ff_sum_square_butterfly_int32_rvv, zve64x |
| vsetvli t0, zero, e64, m8, ta, ma |
| vmv.v.x v0, zero |
| vmv.v.x v8, zero |
| 1: |
| vsetvli t0, a3, e32, m2, tu, ma |
| vle32.v v16, (a1) |
| sub a3, a3, t0 |
| vle32.v v20, (a2) |
| sh2add a1, t0, a1 |
| vadd.vv v24, v16, v20 |
| sh2add a2, t0, a2 |
| vsub.vv v28, v16, v20 |
| vwmacc.vv v0, v16, v16 |
| vwmacc.vv v4, v20, v20 |
| vwmacc.vv v8, v24, v24 |
| vwmacc.vv v12, v28, v28 |
| bnez a3, 1b |
| |
| vsetvli t0, zero, e64, m4, ta, ma |
| vmv.s.x v16, zero |
| vmv.s.x v17, zero |
| vredsum.vs v16, v0, v16 |
| vmv.s.x v18, zero |
| vredsum.vs v17, v4, v17 |
| vmv.s.x v19, zero |
| vredsum.vs v18, v8, v18 |
| vmv.x.s t0, v16 |
| vredsum.vs v19, v12, v19 |
| vmv.x.s t1, v17 |
| sd t0, (a0) |
| vmv.x.s t2, v18 |
| sd t1, 8(a0) |
| vmv.x.s t3, v19 |
| sd t2, 16(a0) |
| sd t3, 24(a0) |
| ret |
| endfunc |
| #endif |
| |
| func ff_sum_square_butterfly_float_rvv, zve32f |
| vsetvli t0, zero, e32, m8, ta, ma |
| vmv.v.x v0, zero |
| vmv.v.x v8, zero |
| 1: |
| vsetvli t0, a3, e32, m4, tu, ma |
| vle32.v v16, (a1) |
| sub a3, a3, t0 |
| vle32.v v20, (a2) |
| sh2add a1, t0, a1 |
| vfadd.vv v24, v16, v20 |
| sh2add a2, t0, a2 |
| vfsub.vv v28, v16, v20 |
| vfmacc.vv v0, v16, v16 |
| vfmacc.vv v4, v20, v20 |
| vfmacc.vv v8, v24, v24 |
| vfmacc.vv v12, v28, v28 |
| bnez a3, 1b |
| |
| vsetvli t0, zero, e32, m4, ta, ma |
| vmv.s.x v16, zero |
| vmv.s.x v17, zero |
| vfredsum.vs v16, v0, v16 |
| vmv.s.x v18, zero |
| vfredsum.vs v17, v4, v17 |
| vmv.s.x v19, zero |
| vfredsum.vs v18, v8, v18 |
| vfmv.f.s ft0, v16 |
| vfredsum.vs v19, v12, v19 |
| vfmv.f.s ft1, v17 |
| fsw ft0, (a0) |
| vfmv.f.s ft2, v18 |
| fsw ft1, 4(a0) |
| vfmv.f.s ft3, v19 |
| fsw ft2, 8(a0) |
| fsw ft3, 12(a0) |
| ret |
| endfunc |
