[FFmpeg-devel] [PATCH v3 1/9] lavc/vp9dsp: R-V ipred vert

[uk7b@foxmail.com]

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

C908:
vp9_vert_8x8_8bpp_c: 22.0
vp9_vert_8x8_8bpp_rvi: 15.7
vp9_vert_16x16_8bpp_c: 71.2
vp9_vert_16x16_8bpp_rvi: 39.0
vp9_vert_32x32_8bpp_c: 300.2
vp9_vert_32x32_8bpp_rvi: 135.2
---
 libavcodec/riscv/Makefile        |  1 +
 libavcodec/riscv/vp9_intra_rvi.S | 71 ++++++++++++++++++++++++++++++++
 libavcodec/riscv/vp9dsp.h        |  6 +++
 libavcodec/riscv/vp9dsp_init.c   | 15 +++++--
 4 files changed, 90 insertions(+), 3 deletions(-)
 create mode 100644 libavcodec/riscv/vp9_intra_rvi.S

diff --git a/libavcodec/riscv/Makefile b/libavcodec/riscv/Makefile
index 89273b1cad..ccd060c666 100644
--- a/libavcodec/riscv/Makefile
+++ b/libavcodec/riscv/Makefile
@@ -62,6 +62,7 @@ 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-$(CONFIG_VP9_DECODER) += riscv/vp9_intra_rvi.o
 RVV-OBJS-$(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_intra_rvi.S b/libavcodec/riscv/vp9_intra_rvi.S
new file mode 100644
index 0000000000..16b6bdb25a
--- /dev/null
+++ b/libavcodec/riscv/vp9_intra_rvi.S
@@ -0,0 +1,71 @@
+/*
+ * 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_v_32x32_rvi
+        ld           t0, (a3)
+        ld           t1, 8(a3)
+        ld           t2, 16(a3)
+        ld           t3, 24(a3)
+        .rept 16
+        add          a7, a0, a1
+        sd           t0, (a0)
+        sd           t1, 8(a0)
+        sd           t2, 16(a0)
+        sd           t3, 24(a0)
+        sh1add       a0, a1, a0
+        sd           t0, (a7)
+        sd           t1, 8(a7)
+        sd           t2, 16(a7)
+        sd           t3, 24(a7)
+        .endr
+
+        ret
+endfunc
+
+func ff_v_16x16_rvi
+        ld           t0, (a3)
+        ld           t1, 8(a3)
+        .rept 8
+        add          a7, a0, a1
+        sd           t0, (a0)
+        sd           t1, 8(a0)
+        sh1add       a0, a1, a0
+        sd           t0, (a7)
+        sd           t1, 8(a7)
+        .endr
+
+        ret
+endfunc
+
+func ff_v_8x8_rvi
+        ld           t0, (a3)
+        .rept 4
+        add          a7, a0, a1
+        sd           t0, (a0)
+        sh1add       a0, a1, a0
+        sd           t0, (a7)
+        .endr
+
+        ret
+endfunc
+#endif
diff --git a/libavcodec/riscv/vp9dsp.h b/libavcodec/riscv/vp9dsp.h
index 25047ed507..f8bc6563a5 100644
--- a/libavcodec/riscv/vp9dsp.h
+++ b/libavcodec/riscv/vp9dsp.h
@@ -60,6 +60,12 @@ void ff_dc_129_16x16_rvv(uint8_t *dst, ptrdiff_t stride, const uint8_t *l,
                          const uint8_t *a);
 void ff_dc_129_8x8_rvv(uint8_t *dst, ptrdiff_t stride, const uint8_t *l,
                        const uint8_t *a);
+void ff_v_32x32_rvi(uint8_t *dst, ptrdiff_t stride, const uint8_t *l,
+                    const uint8_t *a);
+void ff_v_16x16_rvi(uint8_t *dst, ptrdiff_t stride, const uint8_t *l,
+                    const uint8_t *a);
+void ff_v_8x8_rvi(uint8_t *dst, ptrdiff_t stride, const uint8_t *l,
+                  const uint8_t *a);
 
 #define VP9_8TAP_RISCV_RVV_FUNC(SIZE, type, type_idx)                         \
 void ff_put_8tap_##type##_##SIZE##h_rvv(uint8_t *dst, ptrdiff_t dststride,   \
diff --git a/libavcodec/riscv/vp9dsp_init.c b/libavcodec/riscv/vp9dsp_init.c
index dd418bd5bf..0f64afc6d2 100644
--- a/libavcodec/riscv/vp9dsp_init.c
+++ b/libavcodec/riscv/vp9dsp_init.c
@@ -24,11 +24,19 @@
 #include "libavcodec/vp9dsp.h"
 #include "vp9dsp.h"
 
-static av_cold void vp9dsp_intrapred_init_rvv(VP9DSPContext *dsp, int bpp)
+static av_cold void vp9dsp_intrapred_init_riscv(VP9DSPContext *dsp, int bpp)
 {
-#if HAVE_RVV
+#if HAVE_RV
     int flags = av_get_cpu_flags();
 
+    if (bpp == 8 && (flags & AV_CPU_FLAG_RV_MISALIGNED) && (flags & AV_CPU_FLAG_RVB_ADDR)) {
+# if __riscv_xlen >= 64
+        dsp->intra_pred[TX_32X32][VERT_PRED] = ff_v_32x32_rvi;
+        dsp->intra_pred[TX_16X16][VERT_PRED] = ff_v_16x16_rvi;
+        dsp->intra_pred[TX_8X8][VERT_PRED] = ff_v_8x8_rvi;
+# endif
+    }
+#if HAVE_RVV
     if (bpp == 8 && flags & AV_CPU_FLAG_RVV_I64 && ff_rv_vlen_least(128)) {
         dsp->intra_pred[TX_8X8][DC_PRED] = ff_dc_8x8_rvv;
         dsp->intra_pred[TX_8X8][LEFT_DC_PRED] = ff_dc_left_8x8_rvv;
@@ -53,9 +61,10 @@ static av_cold void vp9dsp_intrapred_init_rvv(VP9DSPContext *dsp, int bpp)
         dsp->intra_pred[TX_16X16][TOP_DC_PRED] = ff_dc_top_16x16_rvv;
     }
 #endif
+#endif
 }
 
 av_cold void ff_vp9dsp_init_riscv(VP9DSPContext *dsp, int bpp, int bitexact)
 {
-    vp9dsp_intrapred_init_rvv(dsp, bpp);
+    vp9dsp_intrapred_init_riscv(dsp, bpp);
 }
-- 
2.45.0

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