1 files changed, 37 insertions, 0 deletions
diff --git a/aom_dsp/flow_estimation/corner_detect.c b/aom_dsp/flow_estimation/corner_detect.c
new file mode 100644
index 000000000..c49e3fa75
--- /dev/null
+++ b/aom_dsp/flow_estimation/corner_detect.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <memory.h>
+#include <math.h>
+#include <assert.h>
+
+#include "third_party/fastfeat/fast.h"
+
+#include "aom_dsp/flow_estimation/corner_detect.h"
+
+// Fast_9 wrapper
+#define FAST_BARRIER 18
+int av1_fast_corner_detect(unsigned char *buf, int width, int height,
+                           int stride, int *points, int max_points) {
+  int num_points;
+  xy *const frm_corners_xy = aom_fast9_detect_nonmax(buf, width, height, stride,
+                                                     FAST_BARRIER, &num_points);
+  num_points = (num_points <= max_points ? num_points : max_points);
+  if (num_points > 0 && frm_corners_xy) {
+    memcpy(points, frm_corners_xy, sizeof(*frm_corners_xy) * num_points);
+    free(frm_corners_xy);
+    return num_points;
+  }
+  free(frm_corners_xy);
+  return 0;
+}