avfilter/vf_convolution: add x86 SIMD for filter_3x3()

Tested using a simple command (apply edge enhance):
./ffmpeg_g -i ~/Downloads/bbb_sunflower_1080p_30fps_normal.mp4 \
 -vf convolution="0 0 0 -1 1 0 0 0 0:0 0 0 -1 1 0 0 0 0:0 0 0 -1 1 0 0 0 0:0 0 0 -1 1 0 0 0 0:5:1:1:1:0:128:128:128" \
 -an -vframes 1000 -f null /dev/null

The fps increase from 151 to 270 on my local machine.

Signed-off-by: Ruiling Song <ruiling.song@intel.com>

1 files changed, 64 insertions, 0 deletions

diff --git a/libavfilter/convolution.h b/libavfilter/convolution.h
new file mode 100644
index 0000000000..fc6aad58fd
--- /dev/null
+++ b/libavfilter/convolution.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2012-2013 Oka Motofumi (chikuzen.mo at gmail dot com)
+ * Copyright (c) 2015 Paul B Mahol
+ *
+ * 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 AVFILTER_CONVOLUTION_H
+#define AVFILTER_CONVOLUTION_H
+#include "avfilter.h"
+
+enum MatrixMode {
+    MATRIX_SQUARE,
+    MATRIX_ROW,
+    MATRIX_COLUMN,
+    MATRIX_NBMODES,
+};
+
+typedef struct ConvolutionContext {
+    const AVClass *class;
+
+    char *matrix_str[4];
+    float rdiv[4];
+    float bias[4];
+    int mode[4];
+    float scale;
+    float delta;
+    int planes;
+
+    int size[4];
+    int depth;
+    int max;
+    int bpc;
+    int nb_planes;
+    int nb_threads;
+    int planewidth[4];
+    int planeheight[4];
+    int matrix[4][49];
+    int matrix_length[4];
+    int copy[4];
+
+    void (*setup[4])(int radius, const uint8_t *c[], const uint8_t *src, int stride,
+                     int x, int width, int y, int height, int bpc);
+    void (*filter[4])(uint8_t *dst, int width,
+                      float rdiv, float bias, const int *const matrix,
+                      const uint8_t *c[], int peak, int radius,
+                      int dstride, int stride);
+} ConvolutionContext;
+
+void ff_convolution_init_x86(ConvolutionContext *s);
+#endif