[FFmpeg-devel] [PATCH 04/31] lavc/pixblockdsp: RISC-V I get_pixels
remi at remlab.net
remi at remlab.net
Sun Sep 25 17:25:52 EEST 2022
From: Rémi Denis-Courmont <remi at remlab.net>
Benchmarks on SiFive U74-MC (courtesy of Shanghai StarFive Tech):
get_pixels_c: 180.0
get_pixels_rvi: 136.7
---
libavcodec/pixblockdsp.c | 2 +
libavcodec/pixblockdsp.h | 2 +
libavcodec/riscv/Makefile | 2 +
libavcodec/riscv/pixblockdsp_init.c | 45 ++++++++++++++++++++++
libavcodec/riscv/pixblockdsp_rvi.S | 59 +++++++++++++++++++++++++++++
5 files changed, 110 insertions(+)
create mode 100644 libavcodec/riscv/pixblockdsp_init.c
create mode 100644 libavcodec/riscv/pixblockdsp_rvi.S
diff --git a/libavcodec/pixblockdsp.c b/libavcodec/pixblockdsp.c
index 17c487da1e..4294075cee 100644
--- a/libavcodec/pixblockdsp.c
+++ b/libavcodec/pixblockdsp.c
@@ -109,6 +109,8 @@ av_cold void ff_pixblockdsp_init(PixblockDSPContext *c, AVCodecContext *avctx)
ff_pixblockdsp_init_arm(c, avctx, high_bit_depth);
#elif ARCH_PPC
ff_pixblockdsp_init_ppc(c, avctx, high_bit_depth);
+#elif ARCH_RISCV
+ ff_pixblockdsp_init_riscv(c, avctx, high_bit_depth);
#elif ARCH_X86
ff_pixblockdsp_init_x86(c, avctx, high_bit_depth);
#elif ARCH_MIPS
diff --git a/libavcodec/pixblockdsp.h b/libavcodec/pixblockdsp.h
index 07c2ec4f40..9b002aa3d6 100644
--- a/libavcodec/pixblockdsp.h
+++ b/libavcodec/pixblockdsp.h
@@ -52,6 +52,8 @@ void ff_pixblockdsp_init_arm(PixblockDSPContext *c, AVCodecContext *avctx,
unsigned high_bit_depth);
void ff_pixblockdsp_init_ppc(PixblockDSPContext *c, AVCodecContext *avctx,
unsigned high_bit_depth);
+void ff_pixblockdsp_init_riscv(PixblockDSPContext *c, AVCodecContext *avctx,
+ unsigned high_bit_depth);
void ff_pixblockdsp_init_x86(PixblockDSPContext *c, AVCodecContext *avctx,
unsigned high_bit_depth);
void ff_pixblockdsp_init_mips(PixblockDSPContext *c, AVCodecContext *avctx,
diff --git a/libavcodec/riscv/Makefile b/libavcodec/riscv/Makefile
index 414a9e9bd8..da07f1fe96 100644
--- a/libavcodec/riscv/Makefile
+++ b/libavcodec/riscv/Makefile
@@ -1,2 +1,4 @@
OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_init.o \
riscv/audiodsp_rvf.o
+OBJS-$(CONFIG_PIXBLOCKDSP) += riscv/pixblockdsp_init.o \
+ riscv/pixblockdsp_rvi.o
diff --git a/libavcodec/riscv/pixblockdsp_init.c b/libavcodec/riscv/pixblockdsp_init.c
new file mode 100644
index 0000000000..04bf52649f
--- /dev/null
+++ b/libavcodec/riscv/pixblockdsp_init.c
@@ -0,0 +1,45 @@
+/*
+ * 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 "libavcodec/avcodec.h"
+#include "libavcodec/pixblockdsp.h"
+
+void ff_get_pixels_8_rvi(int16_t *block, const uint8_t *pixels,
+ ptrdiff_t stride);
+void ff_get_pixels_16_rvi(int16_t *block, const uint8_t *pixels,
+ ptrdiff_t stride);
+
+av_cold void ff_pixblockdsp_init_riscv(PixblockDSPContext *c,
+ AVCodecContext *avctx,
+ unsigned high_bit_depth)
+{
+ int cpu_flags = av_get_cpu_flags();
+
+ if (cpu_flags & AV_CPU_FLAG_RVI) {
+ if (high_bit_depth)
+ c->get_pixels = ff_get_pixels_16_rvi;
+ else
+ c->get_pixels = ff_get_pixels_8_rvi;
+ }
+}
diff --git a/libavcodec/riscv/pixblockdsp_rvi.S b/libavcodec/riscv/pixblockdsp_rvi.S
new file mode 100644
index 0000000000..93ece4405e
--- /dev/null
+++ b/libavcodec/riscv/pixblockdsp_rvi.S
@@ -0,0 +1,59 @@
+/*
+ * 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_get_pixels_8_rvi
+.irp row, 0, 1, 2, 3, 4, 5, 6, 7
+ ld t0, (a1)
+ add a1, a1, a2
+ sd zero, ((\row * 16) + 0)(a0)
+ addi t6, t6, -1
+ sd zero, ((\row * 16) + 8)(a0)
+ srli t1, t0, 8
+ sb t0, ((\row * 16) + 0)(a0)
+ srli t2, t0, 16
+ sb t1, ((\row * 16) + 2)(a0)
+ srli t3, t0, 24
+ sb t2, ((\row * 16) + 4)(a0)
+ srli t4, t0, 32
+ sb t3, ((\row * 16) + 6)(a0)
+ srli t1, t0, 40
+ sb t4, ((\row * 16) + 8)(a0)
+ srli t2, t0, 48
+ sb t1, ((\row * 16) + 10)(a0)
+ srli t3, t0, 56
+ sb t2, ((\row * 16) + 12)(a0)
+ sb t3, ((\row * 16) + 14)(a0)
+.endr
+ ret
+endfunc
+
+func ff_get_pixels_16_rvi
+.irp row, 0, 1, 2, 3, 4, 5, 6, 7
+ ld t0, 0(a1)
+ ld t1, 8(a1)
+ add a1, a1, a2
+ sd t0, ((\row * 16) + 0)(a0)
+ sd t1, ((\row * 16) + 8)(a0)
+.endr
+ ret
+endfunc
--
2.37.2
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