COMPMID-495: Port Box 3x3 to new validation

Change-Id: I19b359ca37d97382fd516dad75f454857475ef50
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/86178
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>

4 files changed, 139 insertions, 0 deletions

diff --git a/tests/validation/CPP/Box3x3.cpp b/tests/validation/CPP/Box3x3.cpp
new file mode 100644
index 0000000000..8d304a8236
--- /dev/null
+++ b/tests/validation/CPP/Box3x3.cpp
@@ -0,0 +1,55 @@
+/*
+ * 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.
+ */
+#include "arm_compute/core/Helpers.h"
+
+#include "Box3x3.h"
+#include "Utils.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace reference
+{
+template <typename T>
+SimpleTensor<T> box3x3(const SimpleTensor<T> &src, BorderMode border_mode, T constant_border_value)
+{
+    SimpleTensor<T> dst(src.shape(), src.data_type());
+    const std::array<T, 9> filter{ { 1, 1, 1, 1, 1, 1, 1, 1, 1 } };
+    const float scale = 1.f / static_cast<float>(filter.size());
+    for(int element_idx = 0; element_idx < src.num_elements(); ++element_idx)
+    {
+        const Coordinates id = index2coord(src.shape(), element_idx);
+        apply_2d_spatial_filter(id, src, dst, TensorShape(3U, 3U), filter.data(), scale, border_mode, constant_border_value);
+    }
+    return dst;
+}
+
+template SimpleTensor<uint8_t> box3x3(const SimpleTensor<uint8_t> &src, BorderMode border_mode, uint8_t constant_border_value);
+} // namespace reference
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
diff --git a/tests/validation/CPP/Box3x3.h b/tests/validation/CPP/Box3x3.h
new file mode 100644
index 0000000000..80ac451b93
--- /dev/null
+++ b/tests/validation/CPP/Box3x3.h
@@ -0,0 +1,43 @@
+/*
+ * 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_BOX3X3_H__
+#define __ARM_COMPUTE_TEST_BOX3X3_H__
+
+#include "tests/SimpleTensor.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace reference
+{
+template <typename T>
+SimpleTensor<T> box3x3(const SimpleTensor<T> &src, BorderMode border_mode, T constant_border_value);
+} // namespace reference
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_TEST_BOX3X3_H__ */
diff --git a/tests/validation/CPP/Utils.cpp b/tests/validation/CPP/Utils.cpp
index 05443eabae..03d4eb7405 100644
--- a/tests/validation/CPP/Utils.cpp
+++ b/tests/validation/CPP/Utils.cpp
@@ -88,6 +88,43 @@ T bilinear_policy(const SimpleTensor<T> &in, Coordinates id, float xn, float yn,
 }
 template uint8_t bilinear_policy(const SimpleTensor<uint8_t> &in, Coordinates id, float xn, float yn, BorderMode border_mode, uint8_t constant_border_value);
 
+/* Apply 2D spatial filter on a single element of @p in at coordinates @p coord
+ *
+ * - filter sizes have to be odd number
+ * - Row major order of filter assumed
+ * - TO_ZERO rounding policy assumed
+ * - SATURATE convert policy assumed
+ *
+ */
+template <typename T1, typename T2, typename T3>
+void apply_2d_spatial_filter(Coordinates coord, const SimpleTensor<T1> &in, SimpleTensor<T3> &out, const TensorShape &filter_shape, const T2 *filter_itr, float scale, BorderMode border_mode,
+                             T1 constant_border_value)
+{
+    double    val = 0;
+    const int x   = coord.x();
+    const int y   = coord.y();
+    for(int j = y - static_cast<int>(filter_shape[1] / 2); j <= y + static_cast<int>(filter_shape[1] / 2); ++j)
+    {
+        for(int i = x - static_cast<int>(filter_shape[0] / 2); i <= x + static_cast<int>(filter_shape[0] / 2); ++i)
+        {
+            coord.set(0, i);
+            coord.set(1, j);
+            val += static_cast<double>(*filter_itr) * tensor_elem_at(in, coord, border_mode, constant_border_value);
+            ++filter_itr;
+        }
+    }
+    coord.set(0, x);
+    coord.set(1, y);
+    const double rounded_val = support::cpp11::trunc(val * static_cast<double>(scale));
+    out[coord2index(in.shape(), coord)] = saturate_cast<T3>(rounded_val);
+}
+template void apply_2d_spatial_filter(Coordinates coord, const SimpleTensor<float> &in, SimpleTensor<float> &out, const TensorShape &filter_shape, const float *filter_itr, float scale,
+                                      BorderMode border_mode,
+                                      float      constant_border_value);
+template void apply_2d_spatial_filter(Coordinates coord, const SimpleTensor<uint8_t> &in, SimpleTensor<uint8_t> &out, const TensorShape &filter_shape, const uint8_t *filter_itr, float scale,
+                                      BorderMode border_mode,
+                                      uint8_t    constant_border_value);
+
 } // namespace validation
 } // namespace test
 } // namespace arm_compute
diff --git a/tests/validation/CPP/Utils.h b/tests/validation/CPP/Utils.h
index 5e9ec822a5..a1de4636ce 100644
--- a/tests/validation/CPP/Utils.h
+++ b/tests/validation/CPP/Utils.h
@@ -46,6 +46,10 @@ T tensor_elem_at(const SimpleTensor<T> &in, Coordinates coord, BorderMode border
 
 template <typename T>
 T bilinear_policy(const SimpleTensor<T> &in, Coordinates id, float xn, float yn, BorderMode border_mode, uint8_t constant_border_value);
+
+template <typename T1, typename T2, typename T3>
+void apply_2d_spatial_filter(Coordinates coord, const SimpleTensor<T1> &in, SimpleTensor<T3> &out, const TensorShape &filter_shape, const T2 *filter_itr, float scale, BorderMode border_mode,
+                             T1 constant_border_value = 0);
 } // namespace validation
 } // namespace test
 } // namespace arm_compute