IVGCVSW-3267 Add Arm NN front end support for the new Prelu Activation layer

 * Added new PreluLayer class
 * Made necessary changes to ILayerSupport, ILayerVisitor, etc.
 * Added unit tests

Change-Id: Ifcfb78e823bb5a245ed1dad15290d2f60115c882
Signed-off-by: Matteo Martincigh <matteo.martincigh@arm.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/src/armnn/test/LayerValidateOutputTest.cpp b/src/armnn/test/LayerValidateOutputTest.cpp
index acefd51110..d47959cb65 100644
--- a/src/armnn/test/LayerValidateOutputTest.cpp
+++ b/src/armnn/test/LayerValidateOutputTest.cpp
@@ -58,4 +58,27 @@ BOOST_AUTO_TEST_CASE(TestSpaceToDepthInferOutputShape)
     BOOST_CHECK(expectedShape == spaceToDepthLayer->InferOutputShapes(shapes).at(0));
 }
 
+BOOST_AUTO_TEST_CASE(TestPreluInferOutputShape)
+{
+    armnn::Graph graph;
+
+    armnn::PreluLayer* const preluLayer = graph.AddLayer<armnn::PreluLayer>("prelu");
+
+    std::vector<armnn::TensorShape> inputShapes
+    {
+        { 4, 1, 2 },  // Input shape
+        { 5, 4, 3, 1} // Alpha shape
+    };
+
+    const std::vector<armnn::TensorShape> expectedOutputShapes
+    {
+        { 5, 4, 3, 2 } // Output shape
+    };
+
+    const std::vector<armnn::TensorShape> outputShapes = preluLayer->InferOutputShapes(inputShapes);
+
+    BOOST_CHECK(outputShapes.size() == 1);
+    BOOST_CHECK(outputShapes[0] == expectedOutputShapes[0]);
+}
+
 BOOST_AUTO_TEST_SUITE_END()