[FFmpeg-devel] [PATCH v2 8/9] lavc/vp9dsp: R-V V mc bilin hv

[uk7b@foxmail.com]

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

C908:
vp9_avg_bilin_4hv_8bpp_c: 11.0
vp9_avg_bilin_4hv_8bpp_rvv_i64: 3.7
vp9_avg_bilin_8hv_8bpp_c: 38.7
vp9_avg_bilin_8hv_8bpp_rvv_i64: 7.2
vp9_avg_bilin_16hv_8bpp_c: 147.0
vp9_avg_bilin_16hv_8bpp_rvv_i64: 14.2
vp9_avg_bilin_32hv_8bpp_c: 574.5
vp9_avg_bilin_32hv_8bpp_rvv_i64: 42.7
vp9_avg_bilin_64hv_8bpp_c: 2311.5
vp9_avg_bilin_64hv_8bpp_rvv_i64: 201.7
vp9_put_bilin_4hv_8bpp_c: 10.0
vp9_put_bilin_4hv_8bpp_rvv_i64: 3.2
vp9_put_bilin_8hv_8bpp_c: 35.2
vp9_put_bilin_8hv_8bpp_rvv_i64: 6.5
vp9_put_bilin_16hv_8bpp_c: 133.7
vp9_put_bilin_16hv_8bpp_rvv_i64: 13.0
vp9_put_bilin_32hv_8bpp_c: 538.2
vp9_put_bilin_32hv_8bpp_rvv_i64: 39.7
vp9_put_bilin_64hv_8bpp_c: 2114.0
vp9_put_bilin_64hv_8bpp_rvv_i64: 153.7
---
 libavcodec/riscv/vp9_mc_rvv.S | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/libavcodec/riscv/vp9_mc_rvv.S b/libavcodec/riscv/vp9_mc_rvv.S
index 99605dfbb5..01404bbde5 100644
--- a/libavcodec/riscv/vp9_mc_rvv.S
+++ b/libavcodec/riscv/vp9_mc_rvv.S
@@ -104,6 +104,39 @@ func ff_\op\()_bilin_\len\()\type\()_rvv, zve32x
 endfunc
 .endm
 
+.macro bilin_hv len op
+func ff_\op\()_bilin_\len\()hv_rvv, zve32x
+.ifc \op,avg
+        csrwi           vxrm, 0
+.endif
+        vsetvlstatic8   \len t0
+        neg             t1, a5
+        neg             t2, a6
+        li              t4, 8
+        bilin_load      v24, \len, put, h, a5
+        add             a2, a2, a3
+1:
+        addi            a4, a4, -1
+        bilin_load      v4, \len, put, h, a5
+        vwmulu.vx       v16, v4, a6
+        vwmaccsu.vx     v16, t2, v24
+        vwadd.wx        v16, v16, t4
+        vnsra.wi        v16, v16, 4
+        vadd.vv         v0, v16, v24
+.ifc \op,avg
+        vle8.v          v16, (a0)
+        vaaddu.vv       v0, v0, v16
+.endif
+        vse8.v          v0, (a0)
+        vmv.v.v         v24, v4
+        add             a2, a2, a3
+        add             a0, a0, a1
+        bnez            a4, 1b
+
+        ret
+endfunc
+.endm
+
 const subpel_filters_regular
         .byte  0,  0,   0, 128,   0,   0,  0,  0
         .byte  0,  1,  -5, 126,   8,  -3,  1,  0
@@ -330,6 +363,7 @@ endfunc
         .irp op put avg
                 bilin_h_v \len \op h a5
                 bilin_h_v \len \op v a6
+                bilin_hv \len \op
                 .irp name regular sharp smooth
                         .irp type h v
                                 epel \len \op \name \type
-- 
2.45.0

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