From a2611815f278334c801094d095901d36e111c3f9 Mon Sep 17 00:00:00 2001
From: Giorgio Arena <giorgio.arena@arm.com>
Date: Fri, 21 Jul 2017 10:08:48 +0100
Subject: COMPMID-417 NEON/CL MeanStdDev bugfix using FillBorderKernel

Change-Id: Ic48ba7f69783d0e1e80611264e2bc67d1732436e
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/81293
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
---
 tests/AssetsLibrary.h | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

(limited to 'tests/AssetsLibrary.h')

diff --git a/tests/AssetsLibrary.h b/tests/AssetsLibrary.h
index 3dd30e7629..18ffd773c8 100644
--- a/tests/AssetsLibrary.h
+++ b/tests/AssetsLibrary.h
@@ -150,6 +150,15 @@ public:
      */
     RawTensor get(const std::string &name, Format format, Channel channel);
 
+    /** Puts garbage values all around the tensor for testing purposes
+     *
+     * @param[in, out] tensor       To be filled tensor.
+     * @param[in]      distribution Distribution used to fill the tensor's surroundings.
+     * @param[in]      seed_offset  The offset will be added to the global seed before initialising the random generator.
+     */
+    template <typename T, typename D>
+    void fill_borders_with_garbage(T &&tensor, D &&distribution, std::random_device::result_type seed_offset) const;
+
     /** Fills the specified @p tensor with random values drawn from @p
      * distribution.
      *
@@ -347,6 +356,32 @@ private:
     std::random_device::result_type _seed;
 };
 
+template <typename T, typename D>
+void AssetsLibrary::fill_borders_with_garbage(T &&tensor, D &&distribution, std::random_device::result_type seed_offset) const
+{
+    const PaddingSize padding_size = tensor.padding();
+
+    Window window;
+    window.set(0, Window::Dimension(-padding_size.left, tensor.shape()[0] + padding_size.right, 1));
+    window.set(1, Window::Dimension(-padding_size.top, tensor.shape()[1] + padding_size.bottom, 1));
+
+    std::mt19937 gen(_seed);
+
+    execute_window_loop(window, [&](const Coordinates & id)
+    {
+        TensorShape shape = tensor.shape();
+
+        // If outside of valid region
+        if(id.x() < 0 || id.x() >= static_cast<int>(shape.x()) || id.y() < 0 || id.y() >= static_cast<int>(shape.y()))
+        {
+            using ResultType         = typename std::remove_reference<D>::type::result_type;
+            const ResultType value   = distribution(gen);
+            void *const      out_ptr = tensor(id);
+            store_value_with_data_type(out_ptr, value, tensor.data_type());
+        }
+    });
+}
+
 template <typename T, typename D>
 void AssetsLibrary::fill(T &&tensor, D &&distribution, std::random_device::result_type seed_offset) const
 {
@@ -366,6 +401,8 @@ void AssetsLibrary::fill(T &&tensor, D &&distribution, std::random_device::resul
         void *const      out_ptr = tensor(id);
         store_value_with_data_type(out_ptr, value, tensor.data_type());
     });
+
+    fill_borders_with_garbage(tensor, distribution, seed_offset);
 }
 
 template <typename D>
-- 
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