[FFmpeg-devel] [PATCH 04/10] lavc/vp9dsp: R-V mc copy_avg

[uk7b@foxmail.com]

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

C908:
vp9_avg4_8bpp_c: 1.2
vp9_avg4_8bpp_rvv_i64: 1.0
vp9_avg8_8bpp_c: 3.7
vp9_avg8_8bpp_rvv_i64: 1.5
vp9_avg16_8bpp_c: 14.7
vp9_avg16_8bpp_rvv_i64: 3.5
vp9_avg32_8bpp_c: 57.7
vp9_avg32_8bpp_rvv_i64: 10.0
vp9_avg64_8bpp_c: 229.0
vp9_avg64_8bpp_rvv_i64: 31.7
vp9_put4_8bpp_c: 0.7
vp9_put4_8bpp_rvi: 0.2
vp9_put8_8bpp_c: 2.5
vp9_put8_8bpp_rvi: 0.5
vp9_put16_8bpp_c: 16.5
vp9_put16_8bpp_rvv_i64: 1.7
vp9_put32_8bpp_c: 37.2
vp9_put32_8bpp_rvv_i64: 5.7
vp9_put64_8bpp_c: 91.2
vp9_put64_8bpp_rvv_i64: 19.7
---
 libavcodec/riscv/Makefile      |  4 ++-
 libavcodec/riscv/vp9_mc_rvi.S  | 43 +++++++++++++++++++++++
 libavcodec/riscv/vp9_mc_rvv.S  | 64 ++++++++++++++++++++++++++++++++++
 libavcodec/riscv/vp9dsp_init.c | 47 +++++++++++++++++++++++++
 4 files changed, 157 insertions(+), 1 deletion(-)
 create mode 100644 libavcodec/riscv/vp9_mc_rvi.S
 create mode 100644 libavcodec/riscv/vp9_mc_rvv.S

diff --git a/libavcodec/riscv/Makefile b/libavcodec/riscv/Makefile
index 050c08ee61..43b5c21cf4 100644
--- a/libavcodec/riscv/Makefile
+++ b/libavcodec/riscv/Makefile
@@ -63,6 +63,8 @@ RVV-OBJS-$(CONFIG_VC1DSP) += riscv/vc1dsp_rvv.o
 OBJS-$(CONFIG_VP8DSP) += riscv/vp8dsp_init.o
 RVV-OBJS-$(CONFIG_VP8DSP) += riscv/vp8dsp_rvv.o
 OBJS-$(CONFIG_VP9_DECODER) += riscv/vp9dsp_init.o
-RVV-OBJS-$(CONFIG_VP9_DECODER) += riscv/vp9_intra_rvv.o
+RV-OBJS-$(CONFIG_VP9_DECODER) += riscv/vp9_mc_rvi.o
+RVV-OBJS-$(CONFIG_VP9_DECODER) += riscv/vp9_intra_rvv.o \
+                                  riscv/vp9_mc_rvv.o
 OBJS-$(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..03d8dbbbae
--- /dev/null
+++ b/libavcodec/riscv/vp9_mc_rvi.S
@@ -0,0 +1,43 @@
+/*
+ * 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"
+
+func ff_copy8_rvi
+1:
+        addi         a4, a4, -1
+        ld           t4, (a2)
+        sd           t4, (a0)
+        add          a2, a2, a3
+        add          a0, a0, a1
+        bnez         a4, 1b
+        ret
+endfunc
+
+func ff_copy4_rvi
+1:
+        addi         a4, a4, -1
+        lw           t4, (a2)
+        sw           t4, (a0)
+        add          a2, a2, a3
+        add          a0, a0, a1
+        bnez         a4, 1b
+        ret
+endfunc
diff --git a/libavcodec/riscv/vp9_mc_rvv.S b/libavcodec/riscv/vp9_mc_rvv.S
new file mode 100644
index 0000000000..ba9ec3431f
--- /dev/null
+++ b/libavcodec/riscv/vp9_mc_rvv.S
@@ -0,0 +1,64 @@
+/*
+ * 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"
+
+.macro copy_avg len type
+.ifc \type,avg
+        csrwi           vxrm, 0
+.endif
+.ifc \len,64
+        li              t5, 64
+        vsetvli         t0, t5, e8, m4, ta, ma
+.elseif \len == 32
+        li              t5, 32
+        vsetvli         t0, t5, e8, m2, ta, ma
+.elseif \len == 16
+        vsetivli        t0, 16, e8, m1, ta, ma
+.elseif \len == 8
+        vsetivli        t0, 8, e8, mf2, ta, ma
+.elseif \len == 4
+        vsetivli        t0, 4, e8, mf4, ta, ma
+.endif
+1:
+        addi            a4, a4, -1
+        vle8.v          v8, (a2)
+.ifc \type,avg
+        vle8.v          v16, (a0)
+        vaaddu.vv       v8, v8, v16
+.endif
+        vse8.v          v8, (a0)
+        add             a2, a2, a3
+        add             a0, a0, a1
+        bnez            a4, 1b
+        ret
+.endm
+
+.irp len 64, 32, 16
+func ff_copy\len\()_rvv, zve32x
+        copy_avg \len copy
+endfunc
+.endr
+
+.irp len 64, 32, 16, 8, 4
+func ff_avg\len\()_rvv, zve32x
+        copy_avg \len avg
+endfunc
+.endr
diff --git a/libavcodec/riscv/vp9dsp_init.c b/libavcodec/riscv/vp9dsp_init.c
index f08c8f6a42..da33e15e97 100644
--- a/libavcodec/riscv/vp9dsp_init.c
+++ b/libavcodec/riscv/vp9dsp_init.c
@@ -65,7 +65,54 @@ static av_cold void vp9dsp_intrapred_init_rvv(VP9DSPContext *dsp, int bpp)
     #endif
 }
 
+static av_cold void vp9dsp_mc_init_rvv(VP9DSPContext *dsp, int bpp)
+{
+#if HAVE_RV
+    int flags = av_get_cpu_flags();
+
+    if (bpp == 8 && flags & AV_CPU_FLAG_RVI) {
+        dsp->mc[3][FILTER_8TAP_SMOOTH][0][0][0] = ff_copy8_rvi;
+        dsp->mc[3][FILTER_8TAP_REGULAR][0][0][0] = ff_copy8_rvi;
+        dsp->mc[3][FILTER_8TAP_SHARP][0][0][0] = ff_copy8_rvi;
+        dsp->mc[3][FILTER_BILINEAR][0][0][0] = ff_copy8_rvi;
+        dsp->mc[4][FILTER_8TAP_SMOOTH][0][0][0] = ff_copy4_rvi;
+        dsp->mc[4][FILTER_8TAP_REGULAR][0][0][0] = ff_copy4_rvi;
+        dsp->mc[4][FILTER_8TAP_SHARP][0][0][0] = ff_copy4_rvi;
+        dsp->mc[4][FILTER_BILINEAR][0][0][0] = ff_copy4_rvi;
+    }
+
+#if HAVE_RVV
+    if (bpp == 8 && flags & AV_CPU_FLAG_RVV_I64 && ff_get_rv_vlenb() >= 16) {
+
+#define init_fpel(idx1, idx2, sz, type)                                    \
+    dsp->mc[idx1][FILTER_8TAP_SMOOTH ][idx2][0][0] = ff_##type##sz##_rvv;  \
+    dsp->mc[idx1][FILTER_8TAP_REGULAR][idx2][0][0] = ff_##type##sz##_rvv;  \
+    dsp->mc[idx1][FILTER_8TAP_SHARP  ][idx2][0][0] = ff_##type##sz##_rvv;  \
+    dsp->mc[idx1][FILTER_BILINEAR    ][idx2][0][0] = ff_##type##sz##_rvv
+
+#define init_copy_avg(idx, sz)    \
+    init_fpel(idx, 0, sz, copy);  \
+    init_fpel(idx, 1, sz, avg)
+
+#define init_avg(idx, sz)  \
+    init_fpel(idx, 1, sz, avg)
+
+    init_copy_avg(0, 64);
+    init_copy_avg(1, 32);
+    init_copy_avg(2, 16);
+    init_avg(3, 8);
+    init_avg(4, 4);
+
+#undef init_copy_avg
+#undef init_avg
+#undef init_fpel
+    }
+#endif
+#endif
+}
+
 av_cold void ff_vp9dsp_init_riscv(VP9DSPContext *dsp, int bpp, int bitexact)
 {
     vp9dsp_intrapred_init_rvv(dsp, bpp);
+    vp9dsp_mc_init_rvv(dsp, bpp);
 }
-- 
2.45.0

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