[FFmpeg-cvslog] sws/rgb2rgb: RISC-V V shuffle_bytes_xxxx functions
Rémi Denis-Courmont
git at videolan.org
Fri Sep 30 08:28:17 EEST 2022
ffmpeg | branch: master | Rémi Denis-Courmont <remi at remlab.net> | Wed Sep 28 18:29:59 2022 +0300| [66a03f405316a0e1a4a60cacd1d32ec540604a01] | committer: Lynne
sws/rgb2rgb: RISC-V V shuffle_bytes_xxxx functions
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=66a03f405316a0e1a4a60cacd1d32ec540604a01
---
libswscale/rgb2rgb.c | 2 ++
libswscale/rgb2rgb.h | 1 +
libswscale/riscv/Makefile | 2 ++
libswscale/riscv/rgb2rgb.c | 47 +++++++++++++++++++++++++
libswscale/riscv/rgb2rgb_rvv.S | 78 ++++++++++++++++++++++++++++++++++++++++++
5 files changed, 130 insertions(+)
diff --git a/libswscale/rgb2rgb.c b/libswscale/rgb2rgb.c
index 3af775b389..e98fdac8ea 100644
--- a/libswscale/rgb2rgb.c
+++ b/libswscale/rgb2rgb.c
@@ -139,6 +139,8 @@ av_cold void ff_sws_rgb2rgb_init(void)
rgb2rgb_init_c();
#if ARCH_AARCH64
rgb2rgb_init_aarch64();
+#elif ARCH_RISCV
+ rgb2rgb_init_riscv();
#elif ARCH_X86
rgb2rgb_init_x86();
#elif ARCH_LOONGARCH64
diff --git a/libswscale/rgb2rgb.h b/libswscale/rgb2rgb.h
index db85bfc42f..f3951d523e 100644
--- a/libswscale/rgb2rgb.h
+++ b/libswscale/rgb2rgb.h
@@ -167,6 +167,7 @@ extern void (*yuyvtoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const u
void ff_sws_rgb2rgb_init(void);
void rgb2rgb_init_aarch64(void);
+void rgb2rgb_init_riscv(void);
void rgb2rgb_init_x86(void);
void rgb2rgb_init_loongarch(void);
diff --git a/libswscale/riscv/Makefile b/libswscale/riscv/Makefile
new file mode 100644
index 0000000000..214d877b62
--- /dev/null
+++ b/libswscale/riscv/Makefile
@@ -0,0 +1,2 @@
+OBJS += riscv/rgb2rgb.o
+RVV-OBJS += riscv/rgb2rgb_rvv.o
diff --git a/libswscale/riscv/rgb2rgb.c b/libswscale/riscv/rgb2rgb.c
new file mode 100644
index 0000000000..5654154494
--- /dev/null
+++ b/libswscale/riscv/rgb2rgb.c
@@ -0,0 +1,47 @@
+/*
+ * 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 "config.h"
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libswscale/rgb2rgb.h"
+
+void ff_shuffle_bytes_0321_rvv(const uint8_t *src, uint8_t *dst, int src_len);
+void ff_shuffle_bytes_2103_rvv(const uint8_t *src, uint8_t *dst, int src_len);
+void ff_shuffle_bytes_1230_rvv(const uint8_t *src, uint8_t *dst, int src_len);
+void ff_shuffle_bytes_3012_rvv(const uint8_t *src, uint8_t *dst, int src_len);
+void ff_shuffle_bytes_3210_rvv(const uint8_t *src, uint8_t *dst, int src_len);
+
+av_cold void rgb2rgb_init_riscv(void)
+{
+#if HAVE_RVV
+ int flags = av_get_cpu_flags();
+
+ if (flags & AV_CPU_FLAG_RVV_I32) {
+ shuffle_bytes_0321 = ff_shuffle_bytes_0321_rvv;
+ shuffle_bytes_2103 = ff_shuffle_bytes_2103_rvv;
+ shuffle_bytes_1230 = ff_shuffle_bytes_1230_rvv;
+ shuffle_bytes_3012 = ff_shuffle_bytes_3012_rvv;
+ shuffle_bytes_3210 = ff_shuffle_bytes_3210_rvv;
+ }
+#endif
+}
diff --git a/libswscale/riscv/rgb2rgb_rvv.S b/libswscale/riscv/rgb2rgb_rvv.S
new file mode 100644
index 0000000000..3eb11262c0
--- /dev/null
+++ b/libswscale/riscv/rgb2rgb_rvv.S
@@ -0,0 +1,78 @@
+/*
+ * 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 "libavutil/riscv/asm.S"
+
+func ff_shuffle_bytes_0321_rvv, zve32x
+ addi t1, a0, 3
+ addi t2, a0, 2
+ addi t3, a0, 1
+1:
+ srai a2, a2, 2
+ li t4, 4
+2:
+ vsetvli t0, a2, e8, m1, ta, ma
+ sub a2, a2, t0
+ vlse8.v v8, (a0), t4
+ sh2add a0, t0, a0
+ vlse8.v v9, (t1), t4
+ sh2add t1, t0, t1
+ vlse8.v v10, (t2), t4
+ sh2add t2, t0, t2
+ vlse8.v v11, (t3), t4
+ sh2add t3, t0, t3
+ vsseg4e8.v v8, (a1)
+ sh2add a1, t0, a1
+ bnez a2, 2b
+
+ ret
+endfunc
+
+func ff_shuffle_bytes_2103_rvv, zve32x
+ addi t1, a0, 1
+ addi t2, a0, 0
+ addi t3, a0, 3
+ addi a0, a0, 2
+ j 1b
+endfunc
+
+func ff_shuffle_bytes_1230_rvv, zve32x
+ addi t1, a0, 2
+ addi t2, a0, 3
+ addi t3, a0, 0
+ addi a0, a0, 1
+ j 1b
+endfunc
+
+func ff_shuffle_bytes_3012_rvv, zve32x
+ addi t1, a0, 0
+ addi t2, a0, 1
+ addi t3, a0, 2
+ addi a0, a0, 3
+ j 1b
+endfunc
+
+func ff_shuffle_bytes_3210_rvv, zve32x
+ addi t1, a0, 2
+ addi t2, a0, 1
+ addi t3, a0, 0
+ addi a0, a0, 3
+ j 1b
+endfunc
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