[FFmpeg-devel] [PATCH 3/3] lavc/vp9dsp: R-V V ipred dc dc_left dc_top

[flow gg <hlefthleft@gmail.com>]

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From 1a83f04530e3c299b28bd56dd10694aaa6b963d7 Mon Sep 17 00:00:00 2001
From: sunyuechi <sunyuechi@iscas.ac.cn>
Date: Tue, 27 Feb 2024 00:07:08 +0800
Subject: [PATCH 3/3] lavc/vp9dsp: R-V V ipred dc dc_left dc_top

C908:
vp9_dc_16x16_8bpp_c: 117.0
vp9_dc_16x16_8bpp_rvv_i32: 81.7
vp9_dc_32x32_8bpp_c: 373.2
vp9_dc_32x32_8bpp_rvv_i32: 171.7
vp9_dc_left_16x16_8bpp_c: 101.2
vp9_dc_left_16x16_8bpp_rvv_i32: 76.7
vp9_dc_left_32x32_8bpp_c: 341.2
vp9_dc_left_32x32_8bpp_rvv_i32: 164.7
vp9_dc_top_16x16_8bpp_c: 101.0
vp9_dc_top_16x16_8bpp_rvv_i32: 76.7
vp9_dc_top_32x32_8bpp_c: 340.2
vp9_dc_top_32x32_8bpp_rvv_i32: 164.7
---
 libavcodec/riscv/vp9dsp_init.c |  14 +++++
 libavcodec/riscv/vp9dsp_rvv.S  | 104 +++++++++++++++++++++++++++++++++
 2 files changed, 118 insertions(+)

diff --git a/libavcodec/riscv/vp9dsp_init.c b/libavcodec/riscv/vp9dsp_init.c
index 5b68302235..65617ab21f 100644
--- a/libavcodec/riscv/vp9dsp_init.c
+++ b/libavcodec/riscv/vp9dsp_init.c
@@ -30,6 +30,13 @@ void ff_vp9_ipred_h_16x16_rvv(uint8_t *dst, ptrdiff_t stride, const uint8_t *l,
 void ff_vp9_ipred_h_8x8_rvv(uint8_t *dst, ptrdiff_t stride, const uint8_t *l, const uint8_t *a);
 void ff_vp9_ipred_h_4x4_rvv(uint8_t *dst, ptrdiff_t stride, const uint8_t *l, const uint8_t *a);
 
+void ff_vp9_ipred_dc_32x32_rvv(uint8_t *dst, ptrdiff_t stride, const uint8_t *l, const uint8_t *a);
+void ff_vp9_ipred_dc_16x16_rvv(uint8_t *dst, ptrdiff_t stride, const uint8_t *l, const uint8_t *a);
+void ff_vp9_ipred_dc_top_32x32_rvv(uint8_t *dst, ptrdiff_t stride, const uint8_t *l, const uint8_t *a);
+void ff_vp9_ipred_dc_top_16x16_rvv(uint8_t *dst, ptrdiff_t stride, const uint8_t *l, const uint8_t *a);
+void ff_vp9_ipred_dc_left_32x32_rvv(uint8_t *dst, ptrdiff_t stride, const uint8_t *l, const uint8_t *a);
+void ff_vp9_ipred_dc_left_16x16_rvv(uint8_t *dst, ptrdiff_t stride, const uint8_t *l, const uint8_t *a);
+
 av_cold void ff_vp9dsp_init_riscv(VP9DSPContext *dsp, int bpp, int bitexact)
 {
     #if HAVE_RVV
@@ -43,6 +50,13 @@ av_cold void ff_vp9dsp_init_riscv(VP9DSPContext *dsp, int bpp, int bitexact)
                 dsp->intra_pred[TX_16X16][HOR_PRED]     = ff_vp9_ipred_h_16x16_rvv;
                 dsp->intra_pred[TX_8X8][HOR_PRED]       = ff_vp9_ipred_h_8x8_rvv;
                 dsp->intra_pred[TX_4X4][HOR_PRED]       = ff_vp9_ipred_h_4x4_rvv;
+
+                dsp->intra_pred[TX_32X32][DC_PRED]      = ff_vp9_ipred_dc_32x32_rvv;
+                dsp->intra_pred[TX_16X16][DC_PRED]      = ff_vp9_ipred_dc_16x16_rvv;
+                dsp->intra_pred[TX_32X32][LEFT_DC_PRED] = ff_vp9_ipred_dc_left_32x32_rvv;
+                dsp->intra_pred[TX_16X16][LEFT_DC_PRED] = ff_vp9_ipred_dc_left_16x16_rvv;
+                dsp->intra_pred[TX_32X32][TOP_DC_PRED]  = ff_vp9_ipred_dc_top_32x32_rvv;
+                dsp->intra_pred[TX_16X16][TOP_DC_PRED]  = ff_vp9_ipred_dc_top_16x16_rvv;
             }
         }
     #endif
diff --git a/libavcodec/riscv/vp9dsp_rvv.S b/libavcodec/riscv/vp9dsp_rvv.S
index 578fbce061..e22bd943b4 100644
--- a/libavcodec/riscv/vp9dsp_rvv.S
+++ b/libavcodec/riscv/vp9dsp_rvv.S
@@ -127,3 +127,107 @@ func ff_vp9_ipred_h_4x4_rvv, zve32x
 
         ret
 endfunc
+
+.macro getdc type
+.ifc \type,top
+        vle8.v       v8, (a3)
+        vwredsumu.vs v16, v8, v16
+.elseif \type == left
+        vle8.v       v8, (a2)
+        vwredsumu.vs v16, v8, v16
+.elseif \type == none
+        vle8.v       v8, (a2)
+        vwredsumu.vs v16, v8, v16
+        vle8.v       v8, (a3)
+        vwredsumu.vs v16, v8, v16
+.endif
+        vsetivli     zero, 1, e16, m1, ta, ma
+        vmv.x.s      t1, v16
+.endm
+
+.macro dc32x32 type
+        vsetivli     zero, 1, e16, m1, ta, ma
+        vmv.s.x      v16, zero
+
+        li           t0, 32
+        vsetvli      zero, t0, e8, m2, ta, ma
+        getdc        \type
+
+.ifc \type,top
+        addi         t1, t1, 16
+        srai         t1, t1, 5
+.elseif \type == left
+        addi         t1, t1, 16
+        srai         t1, t1, 5
+.elseif \type == none
+        addi         t1, t1, 32
+        srai         t1, t1, 6
+.endif
+
+        vsetvli      zero, t0, e8, m2, ta, ma
+        vmv.v.x      v0, t1
+
+        vsetivli     zero, 8, e8, mf2, ta, ma
+        .rept 31
+        vse32.v      v0, (a0)
+        add          a0, a0, a1
+        .endr
+        vse32.v      v0, (a0)
+
+        ret
+.endm
+
+.macro dc16x16 type
+        vsetivli     zero, 1, e16, m1, ta, ma
+        vmv.s.x      v16, zero
+
+        vsetivli     zero, 16, e8, m1, ta, ma
+        getdc        \type
+
+.ifc \type,top
+        addi         t1, t1, 8
+        srai         t1, t1, 4
+.elseif \type == left
+        addi         t1, t1, 8
+        srai         t1, t1, 4
+.elseif \type == none
+        addi         t1, t1, 16
+        srai         t1, t1, 5
+.endif
+
+        vsetivli     zero, 16, e8, m1, ta, ma
+        vmv.v.x      v0, t1
+
+        vsetivli     zero, 4, e8, mf4, ta, ma
+        .rept 15
+        vse32.v      v0, (a0)
+        add          a0, a0, a1
+        .endr
+        vse32.v      v0, (a0)
+
+        ret
+.endm
+
+func ff_vp9_ipred_dc_32x32_rvv, zve32x
+        dc32x32 none
+endfunc
+
+func ff_vp9_ipred_dc_16x16_rvv, zve32x
+        dc16x16 none
+endfunc
+
+func ff_vp9_ipred_dc_left_32x32_rvv, zve32x
+        dc32x32 left
+endfunc
+
+func ff_vp9_ipred_dc_left_16x16_rvv, zve32x
+        dc16x16 left
+endfunc
+
+func ff_vp9_ipred_dc_top_32x32_rvv, zve32x
+        dc32x32 top
+endfunc
+
+func ff_vp9_ipred_dc_top_16x16_rvv, zve32x
+        dc16x16 top
+endfunc
-- 
2.44.0


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