avcodec: [loongarch] Optimize vp8_lpf/mc with LSX.

./ffmpeg -i ../9_vp8_1080p_30fps_2Mbps.webm -f rawvideo -y /dev/null -an
before: 210fps
after : 585fps

Reviewed-by: Shiyou Yin <yinshiyou-hf@loongson.cn>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

1 files changed, 63 insertions, 0 deletions

diff --git a/libavcodec/loongarch/vp8dsp_init_loongarch.c b/libavcodec/loongarch/vp8dsp_init_loongarch.c
new file mode 100644
index 0000000000..63da15b198
--- /dev/null
+++ b/libavcodec/loongarch/vp8dsp_init_loongarch.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ * Contributed by Hecai Yuan <yuanhecai@loongson.cn>
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * VP8 compatible video decoder
+ */
+
+#include "libavutil/loongarch/cpu.h"
+#include "libavcodec/vp8dsp.h"
+#include "libavutil/attributes.h"
+#include "vp8dsp_loongarch.h"
+
+#define VP8_MC_LOONGARCH_FUNC(IDX, SIZE)                                          \
+    dsp->put_vp8_epel_pixels_tab[IDX][0][2] = ff_put_vp8_epel##SIZE##_h6_lsx;     \
+    dsp->put_vp8_epel_pixels_tab[IDX][1][0] = ff_put_vp8_epel##SIZE##_v4_lsx;     \
+    dsp->put_vp8_epel_pixels_tab[IDX][1][2] = ff_put_vp8_epel##SIZE##_h6v4_lsx;   \
+    dsp->put_vp8_epel_pixels_tab[IDX][2][0] = ff_put_vp8_epel##SIZE##_v6_lsx;     \
+    dsp->put_vp8_epel_pixels_tab[IDX][2][1] = ff_put_vp8_epel##SIZE##_h4v6_lsx;   \
+    dsp->put_vp8_epel_pixels_tab[IDX][2][2] = ff_put_vp8_epel##SIZE##_h6v6_lsx;
+
+#define VP8_MC_LOONGARCH_COPY(IDX, SIZE)                                          \
+    dsp->put_vp8_epel_pixels_tab[IDX][0][0] = ff_put_vp8_pixels##SIZE##_lsx;      \
+    dsp->put_vp8_bilinear_pixels_tab[IDX][0][0] = ff_put_vp8_pixels##SIZE##_lsx;
+
+av_cold void ff_vp8dsp_init_loongarch(VP8DSPContext *dsp)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    if (have_lsx(cpu_flags)) {
+        VP8_MC_LOONGARCH_FUNC(0, 16);
+        VP8_MC_LOONGARCH_FUNC(1, 8);
+
+        VP8_MC_LOONGARCH_COPY(0, 16);
+        VP8_MC_LOONGARCH_COPY(1, 8);
+
+        dsp->vp8_v_loop_filter16y = ff_vp8_v_loop_filter16_lsx;
+        dsp->vp8_h_loop_filter16y = ff_vp8_h_loop_filter16_lsx;
+        dsp->vp8_v_loop_filter8uv = ff_vp8_v_loop_filter8uv_lsx;
+        dsp->vp8_h_loop_filter8uv = ff_vp8_h_loop_filter8uv_lsx;
+
+        dsp->vp8_v_loop_filter16y_inner = ff_vp8_v_loop_filter16_inner_lsx;
+        dsp->vp8_h_loop_filter16y_inner = ff_vp8_h_loop_filter16_inner_lsx;
+    }
+}