[FFmpeg-devel] [PATCH 22/26] lavc/fmtconvert: RISC-V V int32_to_float_fmul_scalar
remi at remlab.net
remi at remlab.net
Tue Sep 20 17:40:09 EEST 2022
From: Rémi Denis-Courmont <remi at remlab.net>
---
libavcodec/fmtconvert.c | 2 ++
libavcodec/fmtconvert.h | 1 +
libavcodec/riscv/Makefile | 2 ++
libavcodec/riscv/fmtconvert_init.c | 41 ++++++++++++++++++++++++++++++
libavcodec/riscv/fmtconvert_rvv.S | 40 +++++++++++++++++++++++++++++
5 files changed, 86 insertions(+)
create mode 100644 libavcodec/riscv/fmtconvert_init.c
create mode 100644 libavcodec/riscv/fmtconvert_rvv.S
diff --git a/libavcodec/fmtconvert.c b/libavcodec/fmtconvert.c
index 00f55f8f1e..8dcef82ee3 100644
--- a/libavcodec/fmtconvert.c
+++ b/libavcodec/fmtconvert.c
@@ -53,6 +53,8 @@ av_cold void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx)
ff_fmt_convert_init_arm(c, avctx);
#elif ARCH_PPC
ff_fmt_convert_init_ppc(c, avctx);
+#elif ARCH_RISCV
+ ff_fmt_convert_init_riscv(c, avctx);
#elif ARCH_X86
ff_fmt_convert_init_x86(c, avctx);
#endif
diff --git a/libavcodec/fmtconvert.h b/libavcodec/fmtconvert.h
index b2df7a9629..ca51d0861a 100644
--- a/libavcodec/fmtconvert.h
+++ b/libavcodec/fmtconvert.h
@@ -61,6 +61,7 @@ void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx);
void ff_fmt_convert_init_aarch64(FmtConvertContext *c, AVCodecContext *avctx);
void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx);
void ff_fmt_convert_init_ppc(FmtConvertContext *c, AVCodecContext *avctx);
+void ff_fmt_convert_init_riscv(FmtConvertContext *c, AVCodecContext *avctx);
void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx);
void ff_fmt_convert_init_mips(FmtConvertContext *c);
diff --git a/libavcodec/riscv/Makefile b/libavcodec/riscv/Makefile
index 99541b075e..682174e875 100644
--- a/libavcodec/riscv/Makefile
+++ b/libavcodec/riscv/Makefile
@@ -1,5 +1,7 @@
OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_init.o \
riscv/audiodsp_rvf.o
RVV-OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_rvv.o
+OBJS-$(CONFIG_FMTCONVERT) += riscv/fmtconvert_init.o
+RVV-OBJS-$(CONFIG_FMTCONVERT) += riscv/fmtconvert_rvv.o
OBJS-$(CONFIG_PIXBLOCKDSP) += riscv/pixblockdsp_init.o \
riscv/pixblockdsp_rvi.o
diff --git a/libavcodec/riscv/fmtconvert_init.c b/libavcodec/riscv/fmtconvert_init.c
new file mode 100644
index 0000000000..aa7d44ff5a
--- /dev/null
+++ b/libavcodec/riscv/fmtconvert_init.c
@@ -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 "config.h"
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavcodec/avcodec.h"
+#include "libavcodec/fmtconvert.h"
+
+void ff_int32_to_float_fmul_scalar_rvv(float *dst, const int32_t *src,
+ float mul, int len);
+
+av_cold void ff_fmt_convert_init_riscv(FmtConvertContext *c,
+ AVCodecContext *avctx)
+{
+#ifdef HAVE_RVV
+ int flags = av_get_cpu_flags();
+
+ if (flags & AV_CPU_FLAG_RV_ZVE32F)
+ c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_rvv;
+#endif
+}
diff --git a/libavcodec/riscv/fmtconvert_rvv.S b/libavcodec/riscv/fmtconvert_rvv.S
new file mode 100644
index 0000000000..c19b77e38a
--- /dev/null
+++ b/libavcodec/riscv/fmtconvert_rvv.S
@@ -0,0 +1,40 @@
+/*
+ * 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_int32_to_float_fmul_scalar_rvv, zve32f
+NOHWF fmv.w.x fa0, a2
+NOHWF mv a2, a3
+1:
+ vsetvli t0, a2, e32, m1, ta, ma
+ vle32.v v24, (a1)
+ slli t1, t0, 2
+ vfcvt.f.x.v v24, v24
+ sub a2, a2, t0
+ vfmul.vf v24, v24, fa0
+ add a1, a1, t1
+ vse32.v v24, (a0)
+ add a0, a0, t1
+ bnez a2, 1b
+
+ ret
+endfunc
--
2.37.2
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