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sws/input: R-V V rgb24ToY & bgr24ToY

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T-Head C908:
rgb24_to_y_8_c:            2.0
rgb24_to_y_8_rvv_i32:      2.7
rgb24_to_y_128_c:         26.2
rgb24_to_y_128_rvv_i32:    9.2
rgb24_to_y_1080_c:       219.5
rgb24_to_y_1080_rvv_i32:  76.2
rgb24_to_y_1280_c:       276.2
rgb24_to_y_1280_rvv_i32:  89.7
rgb24_to_y_1920_c:       389.7
rgb24_to_y_1920_rvv_i32: 134.2

SpacemiT X60:
rgb24_to_y_8_c:            1.7
rgb24_to_y_8_rvv_i32:      2.2
rgb24_to_y_128_c:         23.2
rgb24_to_y_128_rvv_i32:    4.2
rgb24_to_y_1080_c:       195.0
rgb24_to_y_1080_rvv_i32:  33.7
rgb24_to_y_1280_c:       231.0
rgb24_to_y_1280_rvv_i32:  40.0
rgb24_to_y_1920_c:       346.2
rgb24_to_y_1920_rvv_i32:  59.7
This commit is contained in:
Rémi Denis-Courmont 2024-06-04 22:57:33 +03:00
parent 7560db937d
commit 79dfdac4db
5 changed files with 108 additions and 2 deletions
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6
libswscale/riscv/Makefile
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@ -1,3 +1,5 @@
OBJS += riscv/rgb2rgb.o
OBJS += riscv/rgb2rgb.o \
riscv/swscale.o
RV-OBJS += riscv/rgb2rgb_rvb.o
RVV-OBJS += riscv/rgb2rgb_rvv.o
RVV-OBJS += riscv/input_rvv.o \
riscv/rgb2rgb_rvv.o

55
libswscale/riscv/input_rvv.S Normal file
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@ -0,0 +1,55 @@
/*
* Copyright © 2024 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 "libavutil/riscv/asm.S"
func ff_bgr24ToY_rvv, zve32x
lw t1, 8(a5) # BY
lw t3, 0(a5) # RY
j 1f
endfunc
func ff_rgb24ToY_rvv, zve32x
lw t1, 0(a5) # RY
lw t3, 8(a5) # BY
1:
lw t2, 4(a5) # GY
li t4, (32 << (15 - 1)) + (1 << (15 - 7))
2:
vsetvli t0, a4, e32, m8, ta, ma
vlseg3e8.v v0, (a1)
sub a4, a4, t0
vzext.vf4 v8, v0
sh1add t5, t0, t0 # t1 = 3 * t0
vzext.vf4 v16, v2
vzext.vf4 v24, v4
add a1, t5, a1
vmul.vx v8, v8, t1
vmacc.vx v8, t2, v16
vmacc.vx v8, t3, v24
vadd.vx v8, v8, t4
vsetvli zero, zero, e16, m4, ta, ma
vnsra.wi v0, v8, 15 - 6
vse16.v v0, (a0)
sh1add a0, t0, a0
bnez a4, 2b
ret
endfunc

46
libswscale/riscv/swscale.c Normal file
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@ -0,0 +1,46 @@
/*
* 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/attributes.h"
#include "libavutil/riscv/cpu.h"
#include "libswscale/swscale_internal.h"
void ff_bgr24ToY_rvv(uint8_t *dst, const uint8_t *src, const uint8_t *,
const uint8_t *, int width, uint32_t *coeffs, void *);
void ff_rgb24ToY_rvv(uint8_t *dst, const uint8_t *src, const uint8_t *,
const uint8_t *, int width, uint32_t *coeffs, void *);
av_cold void ff_sws_init_swscale_riscv(SwsContext *c)
{
#if HAVE_RVV
int flags = av_get_cpu_flags();
if ((flags & AV_CPU_FLAG_RVV_I32) && (flags & AV_CPU_FLAG_RVB_ADDR)) {
switch (c->srcFormat) {
case AV_PIX_FMT_BGR24:
c->lumToYV12 = ff_bgr24ToY_rvv;
break;
case AV_PIX_FMT_RGB24:
c->lumToYV12 = ff_rgb24ToY_rvv;
break;
}
}
#endif
}

2
libswscale/swscale.c
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@ -602,6 +602,8 @@ void ff_sws_init_scale(SwsContext *c)
ff_sws_init_swscale_arm(c);
#elif ARCH_LOONGARCH64
ff_sws_init_swscale_loongarch(c);
#elif ARCH_RISCV
ff_sws_init_swscale_riscv(c);
#endif
}

1
libswscale/swscale_internal.h
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@ -988,6 +988,7 @@ void ff_sws_init_swscale_x86(SwsContext *c);
void ff_sws_init_swscale_aarch64(SwsContext *c);
void ff_sws_init_swscale_arm(SwsContext *c);
void ff_sws_init_swscale_loongarch(SwsContext *c);
void ff_sws_init_swscale_riscv(SwsContext *c);
void ff_hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
const uint8_t *src, int srcW, int xInc);