diff options
| author | sunyuechi <sunyuechi@iscas.ac.cn> | 2023-11-22 14:57:29 +0800 |
|---|---|---|
| committer | Rémi Denis-Courmont <remi@remlab.net> | 2023-12-06 16:04:22 +0200 |
| commit | 8bdb6630627a5c304e61f5b81be3af6da77c4a67 (patch) | |
| tree | 7bbd3e46d8e7cc6e3958f0ec71235ab1b0c2c348 | |
| parent | ebfd3912e98087528c08a44cb779a2f2152f5705 (diff) | |
lavc/ac3dsp: R-V V float_to_fixed24
c910
float_to_fixed24_c: 2207.2
float_to_fixed24_rvv_f32: 696.2
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>
| -rw-r--r-- | libavcodec/riscv/Makefile | 1 | ||||
| -rw-r--r-- | libavcodec/riscv/ac3dsp_init.c | 4 | ||||
| -rw-r--r-- | libavcodec/riscv/ac3dsp_rvv.S | 39 |
3 files changed, 44 insertions, 0 deletions
diff --git a/libavcodec/riscv/Makefile b/libavcodec/riscv/Makefile index 2d0e6c19c8..29a7fec455 100644 --- a/libavcodec/riscv/Makefile +++ b/libavcodec/riscv/Makefile @@ -2,6 +2,7 @@ OBJS-$(CONFIG_AAC_DECODER) += riscv/aacpsdsp_init.o riscv/sbrdsp_init.o RVV-OBJS-$(CONFIG_AAC_DECODER) += riscv/aacpsdsp_rvv.o riscv/sbrdsp_rvv.o OBJS-$(CONFIG_AC3DSP) += riscv/ac3dsp_init.o \ riscv/ac3dsp_rvb.o +RVV-OBJS-$(CONFIG_AC3DSP) += riscv/ac3dsp_rvv.o OBJS-$(CONFIG_ALAC_DECODER) += riscv/alacdsp_init.o RVV-OBJS-$(CONFIG_ALAC_DECODER) += riscv/alacdsp_rvv.o OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_init.o \ diff --git a/libavcodec/riscv/ac3dsp_init.c b/libavcodec/riscv/ac3dsp_init.c index 20f294f1de..118b2955ca 100644 --- a/libavcodec/riscv/ac3dsp_init.c +++ b/libavcodec/riscv/ac3dsp_init.c @@ -18,6 +18,7 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ +#include <stddef.h> #include <stdint.h> #include "config.h" @@ -26,6 +27,7 @@ #include "libavcodec/ac3dsp.h" void ff_extract_exponents_rvb(uint8_t *exp, int32_t *coef, int nb_coefs); +void ff_float_to_fixed24_rvv(int32_t *dst, const float *src, size_t len); av_cold void ff_ac3dsp_init_riscv(AC3DSPContext *c) { @@ -34,5 +36,7 @@ av_cold void ff_ac3dsp_init_riscv(AC3DSPContext *c) if (flags & AV_CPU_FLAG_RVB_ADDR) { if (flags & AV_CPU_FLAG_RVB_BASIC) c->extract_exponents = ff_extract_exponents_rvb; + if (flags & AV_CPU_FLAG_RVV_F32) + c->float_to_fixed24 = ff_float_to_fixed24_rvv; } } diff --git a/libavcodec/riscv/ac3dsp_rvv.S b/libavcodec/riscv/ac3dsp_rvv.S new file mode 100644 index 0000000000..b8d32c4677 --- /dev/null +++ b/libavcodec/riscv/ac3dsp_rvv.S @@ -0,0 +1,39 @@ +/* + * 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_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 |