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
---
 1.0/HalPolicy.cpp | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1.0/HalPolicy.hpp |  2 ++
 2 files changed, 55 insertions(+)

(limited to '1.0')

diff --git a/1.0/HalPolicy.cpp b/1.0/HalPolicy.cpp
index a1a1ed9e..13c93277 100644
--- a/1.0/HalPolicy.cpp
+++ b/1.0/HalPolicy.cpp
@@ -58,6 +58,8 @@ bool HalPolicy::ConvertOperation(const Operation& operation, const Model& model,
             return ConvertReLu6(operation, model, data);
         case V1_0::OperationType::SOFTMAX:
             return ConvertSoftmax(operation, model, data);
+        case V1_0::OperationType::SPACE_TO_DEPTH:
+            return ConvertSpaceToDepth(operation, model, data);
         case V1_0::OperationType::TANH:
             return ConvertTanH(operation, model, data);
         case V1_0::OperationType::RESHAPE:
@@ -1130,6 +1132,57 @@ bool HalPolicy::ConvertSoftmax(const Operation& operation, const Model& model, C
     return SetupAndTrackLayerOutputSlot<hal_1_0::HalPolicy>(operation, 0, *layer, model, data);
 }
 
+bool HalPolicy::ConvertSpaceToDepth(const Operation& operation, const Model& model, ConversionData& data)
+{
+    LayerInputHandle input = ConvertToLayerInputHandle<hal_1_0::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;
+    bool dataLayoutCheck;
+
+    GetInputScalar<hal_1_0::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");
+    }
+
+    const Operand* output = GetOutputOperand<hal_1_0::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_0::HalPolicy>(operation, 0, *layer, model, data);
+}
+
 bool HalPolicy::ConvertTanH(const Operation& operation, const Model& model, ConversionData& data)
 {
     armnn::ActivationDescriptor desc;
diff --git a/1.0/HalPolicy.hpp b/1.0/HalPolicy.hpp
index 094c47c5..3c3401db 100644
--- a/1.0/HalPolicy.hpp
+++ b/1.0/HalPolicy.hpp
@@ -72,6 +72,8 @@ private:
 
     static bool ConvertResizeBilinear(const Operation& operation, const Model& model, ConversionData& data);
 
+    static bool ConvertSpaceToDepth(const Operation& operation, const Model& model, ConversionData& data);
+
     static bool ValidateConv2dParameters(const Operation& operation);
 
     static bool ValidateDepthwiseConv2dParameters(const Operation& operation);
-- 
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