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lavc/idctdsp: RISC-V V put_pixels_clamped function

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Rémi Denis-Courmont 2022-09-27 23:04:22 +03:00 committed by Lynne
parent c47ebfa141
commit b29ee63a1b
5 changed files with 90 additions and 0 deletions
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2
libavcodec/idctdsp.c
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@ -312,6 +312,8 @@ av_cold void ff_idctdsp_init(IDCTDSPContext *c, AVCodecContext *avctx)
ff_idctdsp_init_arm(c, avctx, high_bit_depth);
#elif ARCH_PPC
ff_idctdsp_init_ppc(c, avctx, high_bit_depth);
#elif ARCH_RISCV
ff_idctdsp_init_riscv(c, avctx, high_bit_depth);
#elif ARCH_X86
ff_idctdsp_init_x86(c, avctx, high_bit_depth);
#elif ARCH_MIPS

2
libavcodec/idctdsp.h
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@ -114,6 +114,8 @@ void ff_idctdsp_init_arm(IDCTDSPContext *c, AVCodecContext *avctx,
unsigned high_bit_depth);
void ff_idctdsp_init_ppc(IDCTDSPContext *c, AVCodecContext *avctx,
unsigned high_bit_depth);
void ff_idctdsp_init_riscv(IDCTDSPContext *c, AVCodecContext *avctx,
unsigned high_bit_depth);
void ff_idctdsp_init_x86(IDCTDSPContext *c, AVCodecContext *avctx,
unsigned high_bit_depth);
void ff_idctdsp_init_mips(IDCTDSPContext *c, AVCodecContext *avctx,

2
libavcodec/riscv/Makefile
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@ -5,6 +5,8 @@ OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_init.o \
RVV-OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_rvv.o
OBJS-$(CONFIG_FMTCONVERT) += riscv/fmtconvert_init.o
RVV-OBJS-$(CONFIG_FMTCONVERT) += riscv/fmtconvert_rvv.o
OBJS-$(CONFIG_IDCTDSP) += riscv/idctdsp_init.o
RVV-OBJS-$(CONFIG_IDCTDSP) += riscv/idctdsp_rvv.o
OBJS-$(CONFIG_PIXBLOCKDSP) += riscv/pixblockdsp_init.o \
riscv/pixblockdsp_rvi.o
OBJS-$(CONFIG_VORBIS_DECODER) += riscv/vorbisdsp_init.o

41
libavcodec/riscv/idctdsp_init.c Normal file
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@ -0,0 +1,41 @@
/*
* 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 <stdint.h>
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/riscv/cpu.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/idctdsp.h"
void ff_put_pixels_clamped_rvv(const int16_t *block, uint8_t *pixels,
ptrdiff_t stride);
av_cold void ff_idctdsp_init_riscv(IDCTDSPContext *c, AVCodecContext *avctx,
unsigned high_bit_depth)
{
#if HAVE_RVV
int flags = av_get_cpu_flags();
if ((flags & AV_CPU_FLAG_RVV_I32) && ff_get_rv_vlenb() >= 16)
c->put_pixels_clamped = ff_put_pixels_clamped_rvv;
#endif
}

43
libavcodec/riscv/idctdsp_rvv.S Normal file
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@ -0,0 +1,43 @@
/*
* 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 "config.h"
#include "libavutil/riscv/asm.S"
func ff_put_pixels_clamped_rvv, zve32x
vsetivli zero, 8, e16, m1, ta, ma
vlseg8e16.v v24, (a0)
/* RVV only has signed-signed and unsigned-unsigned clipping.
* We need two steps for signed-to-unsigned clipping. */
vsetvli t0, zero, e16, m8, ta, ma
vmax.vx v24, v24, zero
vsetivli zero, 8, e8, mf2, ta, ma
vnclipu.wi v16, v24, 0
vnclipu.wi v17, v25, 0
vnclipu.wi v18, v26, 0
vnclipu.wi v19, v27, 0
vnclipu.wi v20, v28, 0
vnclipu.wi v21, v29, 0
vnclipu.wi v22, v30, 0
vnclipu.wi v23, v31, 0
vssseg8e8.v v16, (a1), a2
ret
endfunc