COMPMID-378 - Implemented reference implementation and tests (NEON and CL) for Non Linear Filter

Change-Id: I1b81e030a27cf01d098247a87d047099616e2a39
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/78531
Reviewed-by: Moritz Pflanzer <moritz.pflanzer@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
diff --git a/tests/dataset/MatrixPatternDataset.h b/tests/dataset/MatrixPatternDataset.h
new file mode 100644
index 0000000..d9f20c1
--- /dev/null
+++ b/tests/dataset/MatrixPatternDataset.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef __ARM_COMPUTE_TEST_MATRIX_PATTERN_DATASET_H__
+#define __ARM_COMPUTE_TEST_MATRIX_PATTERN_DATASET_H__
+
+#include "arm_compute/core/Types.h"
+
+#ifdef BOOST
+#include "boost_wrapper.h"
+#endif
+
+#include <array>
+
+namespace arm_compute
+{
+namespace test
+{
+/** Data set containing all possible border modes.
+ *
+ * Can be used as input for Boost data test cases to automatically run a test
+ * case on all border modes.
+ */
+class MatrixPatterns
+{
+public:
+    /** Type of the samples in the data set. */
+    using sample = MatrixPattern;
+
+    /** Dimensionality of the data set. */
+    enum
+    {
+        arity = 1
+    };
+
+    /** Number of samples in the data set. */
+#ifdef BOOST
+    boost::unit_test::data::size_t size() const
+#else
+    unsigned int size() const
+#endif
+    {
+        return _patterns.size();
+    }
+
+    /** Type of the iterator used to step through all samples in the data set.
+     * Needs to support operator*() and operator++() which a pointer does.
+     */
+    using iterator = const MatrixPattern *;
+
+    /** Iterator to the first sample in the data set. */
+    iterator begin() const
+    {
+        return _patterns.data();
+    }
+
+private:
+    std::array<MatrixPattern, 4> _patterns{ { MatrixPattern::BOX, MatrixPattern::CROSS, MatrixPattern::DISK, MatrixPattern::OTHER } };
+};
+} // namespace test
+} // namespace arm_compute
+#endif // __ARM_COMPUTE_TEST_MATRIX_PATTERN_DATASET_H__