lavc/hevc: R-V V put_pixels(pow2)

k230               banana_f3
put_hevc_pel_pixels4_8_c:               61.6 ( 1.00x)    69.5 ( 1.00x)
put_hevc_pel_pixels4_8_rvv_i32:         24.6 ( 2.50x)    28.0 ( 2.48x)
put_hevc_pel_pixels8_8_c:              209.8 ( 1.00x)    215.5 ( 1.00x)
put_hevc_pel_pixels8_8_rvv_i32:         52.6 ( 3.99x)    38.2 ( 5.64x)
put_hevc_pel_pixels16_8_c:             839.4 ( 1.00x)    830.0 ( 1.00x)
put_hevc_pel_pixels16_8_rvv_i32:       126.6 ( 6.63x)    90.5 ( 9.17x)
put_hevc_pel_pixels32_8_c:            3246.6 ( 1.00x)    3246.7 ( 1.00x)
put_hevc_pel_pixels32_8_rvv_i32:       311.6 (10.42x)    257.0 (12.63x)
put_hevc_pel_pixels64_8_c:           12894.6 ( 1.00x)    12892.7 ( 1.00x)
put_hevc_pel_pixels64_8_rvv_i32:      1135.8 (11.35x)    778.0 (16.57x)

libavcodec/hevc/dsp.c

@@ -265,6 +265,8 @@ int i = 0;
     ff_hevc_dsp_init_arm(hevcdsp, bit_depth);
 #elif ARCH_PPC
     ff_hevc_dsp_init_ppc(hevcdsp, bit_depth);
+#elif ARCH_RISCV
+    ff_hevc_dsp_init_riscv(hevcdsp, bit_depth);
 #elif ARCH_WASM
     ff_hevc_dsp_init_wasm(hevcdsp, bit_depth);
 #elif ARCH_X86

libavcodec/hevc/dsp.h

@@ -133,6 +133,7 @@ extern const int8_t ff_hevc_qpel_filters[4][16];
 void ff_hevc_dsp_init_aarch64(HEVCDSPContext *c, const int bit_depth);
 void ff_hevc_dsp_init_arm(HEVCDSPContext *c, const int bit_depth);
 void ff_hevc_dsp_init_ppc(HEVCDSPContext *c, const int bit_depth);
+void ff_hevc_dsp_init_riscv(HEVCDSPContext *c, const int bit_depth);
 void ff_hevc_dsp_init_wasm(HEVCDSPContext *c, const int bit_depth);
 void ff_hevc_dsp_init_x86(HEVCDSPContext *c, const int bit_depth);
 void ff_hevc_dsp_init_mips(HEVCDSPContext *c, const int bit_depth);

libavcodec/riscv/Makefile

@@ -35,6 +35,8 @@ RVV-OBJS-$(CONFIG_H264DSP) += riscv/h264addpx_rvv.o riscv/h264dsp_rvv.o \
                               riscv/h264idct_rvv.o
 OBJS-$(CONFIG_H264QPEL) += riscv/h264qpel_init.o
 RVV-OBJS-$(CONFIG_H264QPEL) += riscv/h264qpel_rvv.o
+OBJS-$(CONFIG_HEVC_DECODER) += riscv/hevcdsp_init.o
+RVV-OBJS-$(CONFIG_HEVC_DECODER)  += riscv/h26x/h2656_inter_rvv.o
 OBJS-$(CONFIG_HUFFYUV_DECODER) += riscv/huffyuvdsp_init.o
 RVV-OBJS-$(CONFIG_HUFFYUV_DECODER) += riscv/huffyuvdsp_rvv.o
 OBJS-$(CONFIG_IDCTDSP) += riscv/idctdsp_init.o

libavcodec/riscv/h26x/h2656_inter_rvv.S

@@ -0,0 +1,24 @@
+/*
+ * 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 "libavcodec/riscv/h26x/asm.S"
+
+func_put_pixels 256, 64, h2656
+func_put_pixels 128, 64, h2656

libavcodec/riscv/hevcdsp_init.c

@@ -0,0 +1,67 @@
+/*
+ * 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 "config.h"
+
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/riscv/cpu.h"
+
+#include "libavcodec/hevc/dsp.h"
+#include "libavcodec/riscv/h26x/h2656dsp.h"
+
+#define RVV_FNASSIGN(member, v, h, fn, ext) \
+        member[1][v][h] = ff_h2656_put_pixels_##8_##ext;  \
+        member[3][v][h] = ff_h2656_put_pixels_##8_##ext;  \
+        member[5][v][h] = ff_h2656_put_pixels_##8_##ext; \
+        member[7][v][h] = ff_h2656_put_pixels_##8_##ext; \
+        member[9][v][h] = ff_h2656_put_pixels_##8_##ext;
+
+void ff_hevc_dsp_init_riscv(HEVCDSPContext *c, const int bit_depth)
+{
+#if HAVE_RVV
+    const int flags = av_get_cpu_flags();
+    int vlenb;
+
+    if (!(flags & AV_CPU_FLAG_RVV_I32) || !(flags & AV_CPU_FLAG_RVB))
+        return;
+
+    vlenb = ff_get_rv_vlenb();
+    if (vlenb >= 32) {
+        switch (bit_depth) {
+            case 8:
+                RVV_FNASSIGN(c->put_hevc_qpel, 0, 0, pel_pixels, rvv_256);
+                RVV_FNASSIGN(c->put_hevc_epel, 0, 0, pel_pixels, rvv_256);
+                break;
+            default:
+                break;
+        }
+    } else if (vlenb >= 16) {
+        switch (bit_depth) {
+            case 8:
+                RVV_FNASSIGN(c->put_hevc_qpel, 0, 0, pel_pixels, rvv_128);
+                RVV_FNASSIGN(c->put_hevc_epel, 0, 0, pel_pixels, rvv_128);
+                break;
+            default:
+                break;
+        }
+    }
+#endif
+}