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| author | Rémi Denis-Courmont <remi@remlab.net> | 2024-05-07 22:10:59 +0300 |
|---|---|---|
| committer | Rémi Denis-Courmont <remi@remlab.net> | 2024-05-11 11:38:49 +0300 |
| commit | 0d9591841b2b38a1620d393a0ca7594fa5955407 (patch) | |
| tree | 8e6d32d4097c53b342bac3c4e9e58a406f7cb025 /libavcodec | |
| parent | 5d8f62feb5e3512a04ebb6eceae7dd55bab14ce0 (diff) | |
| download | ffmpeg-0d9591841b2b38a1620d393a0ca7594fa5955407.tar.gz | |
lavc/ac3dsp: add R-V Zvbb extract_exponents
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/riscv/Makefile | 1 | ||||
| -rw-r--r-- | libavcodec/riscv/ac3dsp_init.c | 5 | ||||
| -rw-r--r-- | libavcodec/riscv/ac3dsp_rvvb.S | 43 |
3 files changed, 49 insertions, 0 deletions
diff --git a/libavcodec/riscv/Makefile b/libavcodec/riscv/Makefile index 89273b1cad..f2348e259e 100644 --- a/libavcodec/riscv/Makefile +++ b/libavcodec/riscv/Makefile @@ -5,6 +5,7 @@ RVV-OBJS-$(CONFIG_AAC_ENCODER) += riscv/aacencdsp_rvv.o OBJS-$(CONFIG_AC3DSP) += riscv/ac3dsp_init.o RV-OBJS-$(CONFIG_AC3DSP) += riscv/ac3dsp_rvb.o RVV-OBJS-$(CONFIG_AC3DSP) += riscv/ac3dsp_rvv.o +RVVB-OBJS-$(CONFIG_AC3DSP) += riscv/ac3dsp_rvvb.o OBJS-$(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 8cfa69055a..f66b6cac57 100644 --- a/libavcodec/riscv/ac3dsp_init.c +++ b/libavcodec/riscv/ac3dsp_init.c @@ -29,6 +29,7 @@ void ff_ac3_exponent_min_rvb(uint8_t *exp, int, int); void ff_ac3_exponent_min_rvv(uint8_t *exp, int, int); void ff_extract_exponents_rvb(uint8_t *exp, int32_t *coef, int nb_coefs); +void ff_extract_exponents_rvvb(uint8_t *exp, int32_t *coef, int nb_coefs); void ff_float_to_fixed24_rvv(int32_t *dst, const float *src, size_t len); void ff_sum_square_butterfly_int32_rvv(int64_t *, const int32_t *, const int32_t *, int); @@ -48,6 +49,10 @@ 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 HAVE_RV_ZVBB + if (flags & AV_CPU_FLAG_RV_ZVBB) + c->extract_exponents = ff_extract_exponents_rvvb; +# endif if (flags & AV_CPU_FLAG_RVV_F32) { c->float_to_fixed24 = ff_float_to_fixed24_rvv; c->sum_square_butterfly_float = ff_sum_square_butterfly_float_rvv; diff --git a/libavcodec/riscv/ac3dsp_rvvb.S b/libavcodec/riscv/ac3dsp_rvvb.S new file mode 100644 index 0000000000..64766b56be --- /dev/null +++ b/libavcodec/riscv/ac3dsp_rvvb.S @@ -0,0 +1,43 @@ +/* + * Copyright © 2023 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 "config.h" +#include "libavutil/riscv/asm.S" + +func ff_extract_exponents_rvvb, zve32x, zvbb +1: + vsetvli t0, a2, e32, m8, ta, ma + vle32.v v8, (a1) + sub a2, a2, t0 + vneg.v v16, v8 + sh2add a1, t0, a1 + vmax.vv v8, v8, v16 + vclz.v v8, v8 + vsetvli zero, zero, e16, m4, ta, ma + vncvt.x.x.w v4, v8 + vsetvli zero, zero, e8, m2, ta, ma + vncvt.x.x.w v2, v4 + vadd.vi v2, v2, 24 - 32 + vse8.v v2, (a0) + add a0, a0, t0 + bnez a2, 1b + + ret +endfunc |