arm_compute v18.02

Change-Id: I7207aa488e5470f235f39b6c188b4678dc38d1a6
diff --git a/examples/graph_vgg19.cpp b/examples/graph_vgg19.cpp
index 5214438..69ae23d 100644
--- a/examples/graph_vgg19.cpp
+++ b/examples/graph_vgg19.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2018 ARM Limited.
+ * Copyright (c) 2017-2018 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -47,12 +47,13 @@
         std::string image;     /* Image data */
         std::string label;     /* Label data */
 
-        constexpr float mean_r = 123.68f;  /* Mean value to subtract from red channel */
-        constexpr float mean_g = 116.779f; /* Mean value to subtract from green channel */
-        constexpr float mean_b = 103.939f; /* Mean value to subtract from blue channel */
+        // Create a preprocessor object
+        const std::array<float, 3> mean_rgb{ { 123.68f, 116.779f, 103.939f } };
+        std::unique_ptr<IPreprocessor> preprocessor = arm_compute::support::cpp14::make_unique<CaffePreproccessor>(mean_rgb);
 
-        // Set target. 0 (NEON), 1 (OpenCL). By default it is NEON
-        TargetHint            target_hint      = set_target_hint(argc > 1 ? std::strtol(argv[1], nullptr, 10) : 0);
+        // Set target. 0 (NEON), 1 (OpenCL), 2 (OpenCL with Tuner). By default it is NEON
+        const int             int_target_hint  = argc > 1 ? std::strtol(argv[1], nullptr, 10) : 0;
+        TargetHint            target_hint      = set_target_hint(int_target_hint);
         ConvolutionMethodHint convolution_hint = ConvolutionMethodHint::DIRECT;
 
         // Parse arguments
@@ -90,7 +91,7 @@
         graph << target_hint
               << convolution_hint
               << Tensor(TensorInfo(TensorShape(224U, 224U, 3U, 1U), 1, DataType::F32),
-                        get_input_accessor(image, mean_r, mean_g, mean_b))
+                        get_input_accessor(image, std::move(preprocessor)))
               // Layer 1
               << ConvolutionLayer(
                   3U, 3U, 64U,
@@ -217,6 +218,9 @@
               // Softmax
               << SoftmaxLayer()
               << Tensor(get_output_accessor(label, 5));
+
+        // In order to enable the OpenCL tuner, graph_init() has to be called only when all nodes have been instantiated
+        graph.graph_init(int_target_hint == 2);
     }
     void do_run() override
     {