avcodec: [loongarch] Optimize pred16x16_plane with LASX.

./ffmpeg -i ../1_h264_1080p_30fps_3Mbps.mp4 -f rawvideo -y /dev/null -an
before:295
after :296

Change-Id: I281bc739f708d45f91fc3860150944c0b8a6a5ba
Reviewed-by: Shiyou Yin <yinshiyou-hf@loongson.cn>
Reviewed-by: guxiwei <guxiwei-hf@loongson.cn>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

1 files changed, 31 insertions, 0 deletions

diff --git a/libavcodec/loongarch/h264_intrapred_lasx.h b/libavcodec/loongarch/h264_intrapred_lasx.h
new file mode 100644
index 0000000000..0c2653300c
--- /dev/null
+++ b/libavcodec/loongarch/h264_intrapred_lasx.h
@@ -0,0 +1,31 @@
+/*
+ * 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
+ */
+
+#ifndef AVCODEC_LOONGARCH_H264_INTRAPRED_LASX_H
+#define AVCODEC_LOONGARCH_H264_INTRAPRED_LASX_H
+
+#include "libavcodec/avcodec.h"
+
+void ff_h264_pred16x16_plane_h264_8_lasx(uint8_t *src, ptrdiff_t stride);
+void ff_h264_pred16x16_plane_rv40_8_lasx(uint8_t *src, ptrdiff_t stride);
+void ff_h264_pred16x16_plane_svq3_8_lasx(uint8_t *src, ptrdiff_t stride);
+
+#endif  // #ifndef AVCODEC_LOONGARCH_H264_INTRAPRED_LASX_H