avcodec: [loongarch] Optimize vc1dsp with LASX.

./ffmpeg -i 11_wmv3_720p_24fps_7Mbps.wmv -f rawvideo -y /dev/null -an
before:131fps
after :229fps

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

1 files changed, 67 insertions, 0 deletions

diff --git a/libavcodec/loongarch/vc1dsp_init_loongarch.c b/libavcodec/loongarch/vc1dsp_init_loongarch.c
new file mode 100644
index 0000000000..e72a4a3203
--- /dev/null
+++ b/libavcodec/loongarch/vc1dsp_init_loongarch.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ * Contributed by Hao Chen <chenhao@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
+ */
+
+#include "libavutil/loongarch/cpu.h"
+#include "libavutil/attributes.h"
+#include "libavcodec/vc1dsp.h"
+#include "vc1dsp_loongarch.h"
+
+#define FN_ASSIGN(OP, X, Y, INSN) \
+    dsp->OP##vc1_mspel_pixels_tab[1][X+4*Y] = ff_##OP##vc1_mspel_mc##X##Y##INSN; \
+    dsp->OP##vc1_mspel_pixels_tab[0][X+4*Y] = ff_##OP##vc1_mspel_mc##X##Y##_16##INSN
+
+#define FN_ASSIGN_V(OP, Y, INSN) \
+    dsp->OP##vc1_mspel_pixels_tab[0][4*Y] = ff_##OP##vc1_mspel_mc0##Y##_16##INSN
+
+#define FN_ASSIGN_H(OP, X, INSN) \
+    dsp->OP##vc1_mspel_pixels_tab[0][X] = ff_##OP##vc1_mspel_mc##X##0_16##INSN
+
+av_cold void ff_vc1dsp_init_loongarch(VC1DSPContext *dsp)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    if (have_lasx(cpu_flags)) {
+        dsp->vc1_inv_trans_8x8    = ff_vc1_inv_trans_8x8_lasx;
+        dsp->vc1_inv_trans_4x8    = ff_vc1_inv_trans_4x8_lasx;
+        dsp->vc1_inv_trans_8x4    = ff_vc1_inv_trans_8x4_lasx;
+        dsp->vc1_inv_trans_4x4    = ff_vc1_inv_trans_4x4_lasx;
+        dsp->vc1_inv_trans_8x8_dc = ff_vc1_inv_trans_8x8_dc_lasx;
+        dsp->vc1_inv_trans_4x8_dc = ff_vc1_inv_trans_4x8_dc_lasx;
+        dsp->vc1_inv_trans_8x4_dc = ff_vc1_inv_trans_8x4_dc_lasx;
+        dsp->vc1_inv_trans_4x4_dc = ff_vc1_inv_trans_4x4_dc_lasx;
+        FN_ASSIGN(put_, 1, 1, _lasx);
+        FN_ASSIGN(put_, 1, 2, _lasx);
+        FN_ASSIGN(put_, 1, 3, _lasx);
+        FN_ASSIGN(put_, 2, 1, _lasx);
+        FN_ASSIGN(put_, 2, 2, _lasx);
+        FN_ASSIGN(put_, 2, 3, _lasx);
+        FN_ASSIGN(put_, 3, 1, _lasx);
+        FN_ASSIGN(put_, 3, 2, _lasx);
+        FN_ASSIGN(put_, 3, 3, _lasx);
+        FN_ASSIGN_V(put_, 1, _lasx);
+        FN_ASSIGN_V(put_, 2, _lasx);
+        FN_ASSIGN_V(put_, 3, _lasx);
+        FN_ASSIGN_H(put_, 1, _lasx);
+        FN_ASSIGN_H(put_, 2, _lasx);
+        FN_ASSIGN_H(put_, 3, _lasx);
+        dsp->put_no_rnd_vc1_chroma_pixels_tab[0] = ff_put_no_rnd_vc1_chroma_mc8_lasx;
+    }
+}