[FFmpeg-devel] [PATCH 1/3] lavc/vp8dsp: R-V V put_bilin_h

[flow gg <hlefthleft@gmail.com>]

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From b773a2b640ba38a106539da7f3414d6892364c4f Mon Sep 17 00:00:00 2001
From: sunyuechi <sunyuechi@iscas.ac.cn>
Date: Fri, 23 Feb 2024 13:27:42 +0800
Subject: [PATCH 1/3] lavc/vp8dsp: R-V V put_bilin_h

C908:
vp8_put_bilin4_h_c: 373.5
vp8_put_bilin4_h_rvv_i32: 158.7
vp8_put_bilin8_h_c: 1437.7
vp8_put_bilin8_h_rvv_i32: 318.7
vp8_put_bilin16_h_c: 2845.7
vp8_put_bilin16_h_rvv_i32: 374.7
---
 libavcodec/riscv/vp8dsp_init.c | 11 +++++++
 libavcodec/riscv/vp8dsp_rvv.S  | 54 ++++++++++++++++++++++++++++++++++
 2 files changed, 65 insertions(+)

diff --git a/libavcodec/riscv/vp8dsp_init.c b/libavcodec/riscv/vp8dsp_init.c
index c364de3dc9..32cb4893a4 100644
--- a/libavcodec/riscv/vp8dsp_init.c
+++ b/libavcodec/riscv/vp8dsp_init.c
@@ -34,6 +34,10 @@ VP8_EPEL(16, rvv);
 VP8_EPEL(8,  rvv);
 VP8_EPEL(4,  rvv);
 
+VP8_BILIN(16, rvv);
+VP8_BILIN(8,  rvv);
+VP8_BILIN(4,  rvv);
+
 av_cold void ff_vp78dsp_init_riscv(VP8DSPContext *c)
 {
 #if HAVE_RVV
@@ -47,6 +51,13 @@ av_cold void ff_vp78dsp_init_riscv(VP8DSPContext *c)
         c->put_vp8_bilinear_pixels_tab[0][0][0] = ff_put_vp8_pixels16_rvv;
         c->put_vp8_bilinear_pixels_tab[1][0][0] = ff_put_vp8_pixels8_rvv;
         c->put_vp8_bilinear_pixels_tab[2][0][0] = ff_put_vp8_pixels4_rvv;
+
+        c->put_vp8_bilinear_pixels_tab[0][0][1] = ff_put_vp8_bilin16_h_rvv;
+        c->put_vp8_bilinear_pixels_tab[0][0][2] = ff_put_vp8_bilin16_h_rvv;
+        c->put_vp8_bilinear_pixels_tab[1][0][1] = ff_put_vp8_bilin8_h_rvv;
+        c->put_vp8_bilinear_pixels_tab[1][0][2] = ff_put_vp8_bilin8_h_rvv;
+        c->put_vp8_bilinear_pixels_tab[2][0][1] = ff_put_vp8_bilin4_h_rvv;
+        c->put_vp8_bilinear_pixels_tab[2][0][2] = ff_put_vp8_bilin4_h_rvv;
     }
 #endif
 }
diff --git a/libavcodec/riscv/vp8dsp_rvv.S b/libavcodec/riscv/vp8dsp_rvv.S
index 063ab7110c..c8d265e516 100644
--- a/libavcodec/riscv/vp8dsp_rvv.S
+++ b/libavcodec/riscv/vp8dsp_rvv.S
@@ -98,3 +98,57 @@ func ff_put_vp8_pixels4_rvv, zve32x
         vsetivli      zero, 4, e8, mf4, ta, ma
         put_vp8_pixels
 endfunc
+
+.macro bilin_h_load dst len
+.ifc \len,4
+        vsetivli        zero, 5, e8, mf2, ta, ma
+.elseif \len == 8
+        vsetivli        zero, 9, e8, m1, ta, ma
+.else
+        vsetivli        zero, 17, e8, m2, ta, ma
+.endif
+
+        vle8.v          \dst, (a2)
+        vslide1down.vx  v2, \dst, t5
+
+.ifc \len,4
+        vsetivli        zero, 4, e8, mf4, ta, ma
+.elseif \len == 8
+        vsetivli        zero, 8, e8, mf2, ta, ma
+.else
+        vsetivli        zero, 16, e8, m1, ta, ma
+.endif
+
+        vwmulu.vx       v28, \dst, t1
+        vwmaccu.vx      v28, a5, v2
+        vwaddu.wx       v24, v28, t4
+        vnsra.wi        \dst, v24, 3
+.endm
+
+.macro put_vp8_bilin_h len
+        li              t1, 8
+        li              t4, 4
+        li              t5, 1
+        sub             t1, t1, a5
+1:
+        addi            a4, a4, -1
+        bilin_h_load    v0, \len
+        vse8.v          v0, (a0)
+        add             a2, a2, a3
+        add             a0, a0, a1
+        bnez            a4, 1b
+
+        ret
+.endm
+
+func ff_put_vp8_bilin16_h_rvv, zve32x
+        put_vp8_bilin_h 16
+endfunc
+
+func ff_put_vp8_bilin8_h_rvv, zve32x
+        put_vp8_bilin_h 8
+endfunc
+
+func ff_put_vp8_bilin4_h_rvv, zve32x
+        put_vp8_bilin_h 4
+endfunc
-- 
2.43.2


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