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>

1 files changed, 51 insertions, 0 deletions

diff --git a/tests/validation/Helpers.h b/tests/validation/Helpers.h
index cbaea4b894..c0c5865e56 100644
--- a/tests/validation/Helpers.h
+++ b/tests/validation/Helpers.h
@@ -25,6 +25,7 @@
 #define __ARM_COMPUTE_TEST_VALIDATION_HELPERS_H__
 
 #include "Types.h"
+#include "ValidationUserConfiguration.h"
 
 #include <type_traits>
 #include <utility>
@@ -117,6 +118,56 @@ std::pair<T, T> get_batchnormalization_layer_test_bounds(int fixed_point_positio
 
     return bounds;
 }
+
+/** Fill mask with the corresponding given pattern.
+ *
+ * @param[in,out] mask    Mask to be filled according to pattern
+ * @param[in]     cols    Columns (width) of mask
+ * @param[in]     rows    Rows (height) of mask
+ * @param[in]     pattern Pattern to fill the mask according to
+ */
+inline void fill_mask_from_pattern(uint8_t *mask, int cols, int rows, MatrixPattern pattern)
+{
+    unsigned int                v = 0;
+    std::mt19937                gen(user_config.seed.get());
+    std::bernoulli_distribution dist(0.5);
+
+    for(int r = 0; r < rows; ++r)
+    {
+        for(int c = 0; c < cols; ++c, ++v)
+        {
+            uint8_t val = 0;
+
+            switch(pattern)
+            {
+                case MatrixPattern::BOX:
+                    val = 255;
+                    break;
+                case MatrixPattern::CROSS:
+                    val = ((r == (rows / 2)) || (c == (cols / 2))) ? 255 : 0;
+                    break;
+                case MatrixPattern::DISK:
+                    val = (((r - rows / 2.0f + 0.5f) * (r - rows / 2.0f + 0.5f)) / ((rows / 2.0f) * (rows / 2.0f)) + ((c - cols / 2.0f + 0.5f) * (c - cols / 2.0f + 0.5f)) / ((cols / 2.0f) *
+                            (cols / 2.0f))) <= 1.0f ? 255 : 0;
+                    break;
+                case MatrixPattern::OTHER:
+                    val = (dist(gen) ? 0 : 255);
+                    break;
+                default:
+                    return;
+            }
+
+            mask[v] = val;
+        }
+    }
+
+    if(pattern == MatrixPattern::OTHER)
+    {
+        std::uniform_int_distribution<uint8_t> distribution_u8(0, ((cols * rows) - 1));
+        mask[distribution_u8(gen)] = 255;
+    }
+}
+
 } // namespace validation
 } // namespace test
 } // namespace arm_compute