From a6bc52f6b9eeddcdebf4e660b21a4409a592ac4e Mon Sep 17 00:00:00 2001
From: Keith Davis <keith.davis@arm.com>
Date: Wed, 26 Jun 2019 09:39:49 +0100
Subject: IVGCVSW-3197 Support SPACE_TO_DEPTH on Android

	* Added support within 1.0/HalPolicy
	* Added support within 1.1/HalPolicy
	* Added support within 1.2/HalPolicy
	* Updated NnapiSupport.txt

Signed-off-by: Keith Davis <keith.davis@arm.com>
Change-Id: I2dc2743ee2f858d2b3496aae0f3e3e28a96ee96e
---
 1.2/HalPolicy.cpp | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1.2/HalPolicy.hpp |  2 ++
 2 files changed, 54 insertions(+)

(limited to '1.2')

diff --git a/1.2/HalPolicy.cpp b/1.2/HalPolicy.cpp
index 836977da..fe0cfbdc 100644
--- a/1.2/HalPolicy.cpp
+++ b/1.2/HalPolicy.cpp
@@ -669,5 +669,57 @@ bool HalPolicy::ConvertResize(const Operation& operation,
     return SetupAndTrackLayerOutputSlot<hal_1_2::HalPolicy>(operation, 0, *layer, model, data);
 }
 
+bool HalPolicy::ConvertSpaceToDepth(const Operation& operation, const Model& model, ConversionData& data)
+{
+    LayerInputHandle input = ConvertToLayerInputHandle<hal_1_2::HalPolicy>(operation, 0, model, data);
+
+    if (!input.IsValid() )
+    {
+        return Fail("%s: Operation has invalid inputs", __func__);
+    }
+
+    const armnn::TensorInfo& inputInfo = input.GetTensorInfo();
+    unsigned int rank = inputInfo.GetNumDimensions();
+
+    if (rank != 4)
+    {
+        return Fail("%s: Only inputs with rank 4 are supported", __func__);
+    }
+
+    armnn::SpaceToDepthDescriptor desc;
+
+    GetInputScalar<hal_1_2::HalPolicy>(operation, 1, OperandType::INT32, desc.m_BlockSize, model, data);
+
+    if (desc.m_BlockSize <= 1)
+    {
+        return Fail("%s: Block size must be at least 1 in all dimensions");
+    }
+
+    desc.m_DataLayout = OptionalDataLayout<hal_1_2::HalPolicy>(operation, 2, model, data);
+
+    const Operand* output = GetOutputOperand<hal_1_2::HalPolicy>(operation, 0, model);
+    if (!output)
+    {
+        return Fail("%s: Could not read output 0", __func__);
+    }
+
+    const armnn::TensorInfo& outputInfo = GetTensorInfoForOperand(*output);
+    if (!IsLayerSupportedForAnyBackend(__func__,
+                                       armnn::IsSpaceToDepthSupported,
+                                       data.m_Backends,
+                                       inputInfo,
+                                       outputInfo,
+                                       desc))
+    {
+        return false;
+    }
+
+    armnn::IConnectableLayer* const layer = data.m_Network->AddSpaceToDepthLayer(desc);
+    assert(layer != nullptr);
+    input.Connect(layer->GetInputSlot(0));
+
+    return SetupAndTrackLayerOutputSlot<hal_1_2::HalPolicy>(operation, 0, *layer, model, data);
+}
+
 } // namespace hal_1_2
 } // namespace armnn_driver
diff --git a/1.2/HalPolicy.hpp b/1.2/HalPolicy.hpp
index 9d6dd497..25aee820 100644
--- a/1.2/HalPolicy.hpp
+++ b/1.2/HalPolicy.hpp
@@ -43,6 +43,8 @@ private:
                               const Model& model,
                               ConversionData& data,
                               armnn::ResizeMethod resizeMethod);
+
+    static bool ConvertSpaceToDepth(const Operation& operation, const Model& model, ConversionData& data);
 };
 
 } // namespace hal_1_2
-- 
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