[FFmpeg-devel] [PATCH v3 2/9] lavc/vp9dsp: R-V mc copy

[uk7b@foxmail.com]

From: sunyuechi <sunyuechi@iscas.ac.cn>

C908:
vp9_put4_8bpp_c: 0.7
vp9_put4_8bpp_rvi: 0.5
vp9_put8_8bpp_c: 2.5
vp9_put8_8bpp_rvi: 0.5
vp9_put16_8bpp_c: 16.7
vp9_put16_8bpp_rvi: 1.5
vp9_put32_8bpp_c: 37.2
vp9_put32_8bpp_rvi: 5.7
vp9_put64_8bpp_c: 107.5
vp9_put64_8bpp_rvi: 21.7
---
 libavcodec/riscv/Makefile      |   3 +-
 libavcodec/riscv/vp9_mc_rvi.S  | 105 +++++++++++++++++++++++++++++++++
 libavcodec/riscv/vp9dsp.h      |   3 +
 libavcodec/riscv/vp9dsp_init.c |  28 +++++++++
 4 files changed, 138 insertions(+), 1 deletion(-)
 create mode 100644 libavcodec/riscv/vp9_mc_rvi.S

diff --git a/libavcodec/riscv/Makefile b/libavcodec/riscv/Makefile
index ccd060c666..0cd900104f 100644
--- a/libavcodec/riscv/Makefile
+++ b/libavcodec/riscv/Makefile
@@ -62,7 +62,8 @@ OBJS-$(CONFIG_VP8DSP) += riscv/vp8dsp_init.o
 RV-OBJS-$(CONFIG_VP8DSP) += riscv/vp8dsp_rvi.o
 RVV-OBJS-$(CONFIG_VP8DSP) += riscv/vp8dsp_rvv.o
 OBJS-$(CONFIG_VP9_DECODER) += riscv/vp9dsp_init.o
-RV-OBJS-$(CONFIG_VP9_DECODER) += riscv/vp9_intra_rvi.o
+RV-OBJS-$(CONFIG_VP9_DECODER) += riscv/vp9_intra_rvi.o \
+                                 riscv/vp9_mc_rvi.o
 RVV-OBJS-$(CONFIG_VP9_DECODER) += riscv/vp9_intra_rvv.o
 OBJS-$(CONFIG_VORBIS_DECODER) += riscv/vorbisdsp_init.o
 RVV-OBJS-$(CONFIG_VORBIS_DECODER) += riscv/vorbisdsp_rvv.o
diff --git a/libavcodec/riscv/vp9_mc_rvi.S b/libavcodec/riscv/vp9_mc_rvi.S
new file mode 100644
index 0000000000..0db14e83c7
--- /dev/null
+++ b/libavcodec/riscv/vp9_mc_rvi.S
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2024 Institue of Software Chinese Academy of Sciences (ISCAS).
+ *
+ * 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"
+
+#if __riscv_xlen >= 64
+func ff_copy64_rvi
+1:
+        addi          a4, a4, -1
+        ld            t0, (a2)
+        ld            t1, 8(a2)
+        ld            t2, 16(a2)
+        ld            t3, 24(a2)
+        ld            t4, 32(a2)
+        ld            t5, 40(a2)
+        ld            t6, 48(a2)
+        ld            a7, 56(a2)
+        sd            t0, (a0)
+        sd            t1, 8(a0)
+        sd            t2, 16(a0)
+        sd            t3, 24(a0)
+        sd            t4, 32(a0)
+        sd            t5, 40(a0)
+        sd            t6, 48(a0)
+        sd            a7, 56(a0)
+        add           a2, a2, a3
+        add           a0, a0, a1
+        bnez          a4, 1b
+
+        ret
+endfunc
+
+func ff_copy32_rvi
+1:
+        addi          a4, a4, -1
+        ld            t0, (a2)
+        ld            t1, 8(a2)
+        ld            t2, 16(a2)
+        ld            t3, 24(a2)
+        sd            t0, (a0)
+        sd            t1, 8(a0)
+        sd            t2, 16(a0)
+        sd            t3, 24(a0)
+        add           a2, a2, a3
+        add           a0, a0, a1
+        bnez          a4, 1b
+
+        ret
+endfunc
+
+func ff_copy16_rvi
+1:
+        addi          a4, a4, -1
+        ld            t0, (a2)
+        ld            t1, 8(a2)
+        sd            t0, (a0)
+        sd            t1, 8(a0)
+        add           a2, a2, a3
+        add           a0, a0, a1
+        bnez          a4, 1b
+
+        ret
+endfunc
+
+func ff_copy8_rvi
+1:
+        addi          a4, a4, -1
+        ld            t0, (a2)
+        sd            t0, (a0)
+        add           a2, a2, a3
+        add           a0, a0, a1
+        bnez          a4, 1b
+
+        ret
+endfunc
+#endif
+
+func ff_copy4_rvi
+1:
+        addi          a4, a4, -1
+        lw            t0, (a2)
+        sw            t0, (a0)
+        add           a2, a2, a3
+        add           a0, a0, a1
+        bnez          a4, 1b
+
+        ret
+endfunc
diff --git a/libavcodec/riscv/vp9dsp.h b/libavcodec/riscv/vp9dsp.h
index f8bc6563a5..b8ff282f8a 100644
--- a/libavcodec/riscv/vp9dsp.h
+++ b/libavcodec/riscv/vp9dsp.h
@@ -167,6 +167,9 @@ void ff_copy##SIZE##_rvi(uint8_t *dst, ptrdiff_t dststride,        \
                          const uint8_t *src, ptrdiff_t srcstride,  \
                          int h, int mx, int my);
 
+VP9_COPY_RISCV_RVI_FUNC(64);
+VP9_COPY_RISCV_RVI_FUNC(32);
+VP9_COPY_RISCV_RVI_FUNC(16);
 VP9_COPY_RISCV_RVI_FUNC(8);
 VP9_COPY_RISCV_RVI_FUNC(4);
 
diff --git a/libavcodec/riscv/vp9dsp_init.c b/libavcodec/riscv/vp9dsp_init.c
index e377d377e3..fa9c3f4d8c 100644
--- a/libavcodec/riscv/vp9dsp_init.c
+++ b/libavcodec/riscv/vp9dsp_init.c
@@ -24,6 +24,33 @@
 #include "libavcodec/vp9dsp.h"
 #include "vp9dsp.h"
 
+static av_cold void vp9dsp_mc_init_riscv(VP9DSPContext *dsp, int bpp)
+{
+#if HAVE_RV
+    int flags = av_get_cpu_flags();
+
+# if __riscv_xlen >= 64
+    if (bpp == 8 && flags & AV_CPU_FLAG_RVI) {
+
+#define init_fpel(idx1, sz)                                           \
+    dsp->mc[idx1][FILTER_8TAP_SMOOTH ][0][0][0] = ff_copy##sz##_rvi;  \
+    dsp->mc[idx1][FILTER_8TAP_REGULAR][0][0][0] = ff_copy##sz##_rvi;  \
+    dsp->mc[idx1][FILTER_8TAP_SHARP  ][0][0][0] = ff_copy##sz##_rvi;  \
+    dsp->mc[idx1][FILTER_BILINEAR    ][0][0][0] = ff_copy##sz##_rvi
+
+    init_fpel(0, 64);
+    init_fpel(1, 32);
+    init_fpel(2, 16);
+    init_fpel(3, 8);
+    init_fpel(4, 4);
+
+#undef init_fpel
+    }
+# endif
+
+#endif
+}
+
 static av_cold void vp9dsp_intrapred_init_riscv(VP9DSPContext *dsp, int bpp)
 {
 #if HAVE_RV
@@ -67,4 +94,5 @@ static av_cold void vp9dsp_intrapred_init_riscv(VP9DSPContext *dsp, int bpp)
 av_cold void ff_vp9dsp_init_riscv(VP9DSPContext *dsp, int bpp, int bitexact)
 {
     vp9dsp_intrapred_init_riscv(dsp, bpp);
+    vp9dsp_mc_init_riscv(dsp, bpp);
 }
-- 
2.45.0

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