mirror of https://git.ffmpeg.org/ffmpeg.git
lavc/ac3: add R-V Zbb extract_exponents
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9078dc0c52
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89c10d8d20
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@ -395,5 +395,7 @@ av_cold void ff_ac3dsp_init(AC3DSPContext *c)
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ff_ac3dsp_init_x86(c);
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ff_ac3dsp_init_x86(c);
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#elif ARCH_MIPS
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#elif ARCH_MIPS
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ff_ac3dsp_init_mips(c);
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ff_ac3dsp_init_mips(c);
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#elif ARCH_RISCV
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ff_ac3dsp_init_riscv(c);
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#endif
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#endif
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}
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}
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@ -109,6 +109,7 @@ void ff_ac3dsp_init (AC3DSPContext *c);
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void ff_ac3dsp_init_arm(AC3DSPContext *c);
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void ff_ac3dsp_init_arm(AC3DSPContext *c);
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void ff_ac3dsp_init_x86(AC3DSPContext *c);
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void ff_ac3dsp_init_x86(AC3DSPContext *c);
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void ff_ac3dsp_init_mips(AC3DSPContext *c);
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void ff_ac3dsp_init_mips(AC3DSPContext *c);
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void ff_ac3dsp_init_riscv(AC3DSPContext *c);
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void ff_ac3dsp_downmix(AC3DSPContext *c, float **samples, float **matrix,
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void ff_ac3dsp_downmix(AC3DSPContext *c, float **samples, float **matrix,
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int out_ch, int in_ch, int len);
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int out_ch, int in_ch, int len);
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@ -1,5 +1,7 @@
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OBJS-$(CONFIG_AAC_DECODER) += riscv/aacpsdsp_init.o
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OBJS-$(CONFIG_AAC_DECODER) += riscv/aacpsdsp_init.o
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RVV-OBJS-$(CONFIG_AAC_DECODER) += riscv/aacpsdsp_rvv.o
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RVV-OBJS-$(CONFIG_AAC_DECODER) += riscv/aacpsdsp_rvv.o
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OBJS-$(CONFIG_AC3DSP) += riscv/ac3dsp_init.o \
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riscv/ac3dsp_rvb.o
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OBJS-$(CONFIG_ALAC_DECODER) += riscv/alacdsp_init.o
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OBJS-$(CONFIG_ALAC_DECODER) += riscv/alacdsp_init.o
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RVV-OBJS-$(CONFIG_ALAC_DECODER) += riscv/alacdsp_rvv.o
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RVV-OBJS-$(CONFIG_ALAC_DECODER) += riscv/alacdsp_rvv.o
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OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_init.o \
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OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_init.o \
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@ -0,0 +1,38 @@
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/*
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* Copyright © 2023 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 <stdint.h>
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#include "config.h"
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#include "libavutil/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavcodec/ac3dsp.h"
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void ff_extract_exponents_rvb(uint8_t *exp, int32_t *coef, int nb_coefs);
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av_cold void ff_ac3dsp_init_riscv(AC3DSPContext *c)
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{
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int flags = av_get_cpu_flags();
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if (flags & AV_CPU_FLAG_RVB_ADDR) {
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if (flags & AV_CPU_FLAG_RVB_BASIC)
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c->extract_exponents = ff_extract_exponents_rvb;
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}
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}
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@ -0,0 +1,38 @@
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/*
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* Copyright © 2023 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 "config.h"
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#include "libavutil/riscv/asm.S"
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func ff_extract_exponents_rvb, zbb
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1:
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lw t0, (a1)
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addi a0, a0, 1
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neg t1, t0
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addi a1, a1, 4
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max t0, t0, t1
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addi a2, a2, -1
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clz t0, t0
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addi t0, t0, 24 - __riscv_xlen
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sb t0, -1(a0)
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bgtz a2, 1b
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ret
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endfunc
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