From 0176fd81b3f6a82ddc89e016cb634010f5397425 Mon Sep 17 00:00:00 2001
From: Keith Davis <keith.davis@arm.com>
Date: Tue, 1 Jun 2021 17:36:32 +0100
Subject: MLCE-510 Add CpuRef Shape Operator to ArmNN

 * Add TfLiteParser and delegate support

Signed-off-by: Keith Davis <keith.davis@arm.com>
Change-Id: Id3219ba7cc7128b5e73de2c7d8d076a40dcce9c5
---
 src/armnnTfLiteParser/TfLiteParser.cpp | 36 ++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

(limited to 'src/armnnTfLiteParser/TfLiteParser.cpp')

diff --git a/src/armnnTfLiteParser/TfLiteParser.cpp b/src/armnnTfLiteParser/TfLiteParser.cpp
index 26c44a9f35..f38f45fcdf 100644
--- a/src/armnnTfLiteParser/TfLiteParser.cpp
+++ b/src/armnnTfLiteParser/TfLiteParser.cpp
@@ -648,6 +648,7 @@ TfLiteParserImpl::TfLiteParserImpl(const Optional<ITfLiteParser::TfLiteParserOpt
     m_ParserFunctions[tflite::BuiltinOperator_RESIZE_BILINEAR]         = &TfLiteParserImpl::ParseResizeBilinear;
     m_ParserFunctions[tflite::BuiltinOperator_RESIZE_NEAREST_NEIGHBOR] = &TfLiteParserImpl::ParseResizeNearestNeighbor;
     m_ParserFunctions[tflite::BuiltinOperator_RSQRT]                   = &TfLiteParserImpl::ParseRsqrt;
+    m_ParserFunctions[tflite::BuiltinOperator_SHAPE]                   = &TfLiteParserImpl::ParseShape;
     m_ParserFunctions[tflite::BuiltinOperator_SLICE]                   = &TfLiteParserImpl::ParseSlice;
     m_ParserFunctions[tflite::BuiltinOperator_SOFTMAX]                 = &TfLiteParserImpl::ParseSoftmax;
     m_ParserFunctions[tflite::BuiltinOperator_SPACE_TO_BATCH_ND]       = &TfLiteParserImpl::ParseSpaceToBatchND;
@@ -1637,6 +1638,41 @@ armnn::TensorInfo TfLiteParserImpl::OutputShapeOfSqueeze(const std::vector<uint3
     return outTensorInfo;
 }
 
+void TfLiteParserImpl::ParseShape(size_t subgraphIndex, size_t operatorIndex)
+{
+    CHECK_MODEL(m_Model, subgraphIndex, operatorIndex);
+
+    auto inputs = GetInputs(m_Model, subgraphIndex, operatorIndex);
+    CHECK_VALID_SIZE(inputs.size(), 1);
+    auto outputs = GetOutputs(m_Model, subgraphIndex, operatorIndex);
+    CHECK_VALID_SIZE(outputs.size(), 1);
+
+    auto layerName = fmt::format("Shape:{}:{}", subgraphIndex, operatorIndex);
+
+    IConnectableLayer* layer = m_Network->AddShapeLayer(layerName.c_str());
+    ARMNN_ASSERT(layer != nullptr);
+
+
+    TensorInfo outputTensorInfo = ToTensorInfo(outputs[0], true);
+    layer->GetOutputSlot(0).SetTensorInfo(outputTensorInfo);
+
+    // Check if output tensor type is Signed32 or Signed64
+    if (outputTensorInfo.GetDataType() != armnn::DataType::Signed32 &&
+        outputTensorInfo.GetDataType() != armnn::DataType::Signed64)
+    {
+        throw ParseException(
+            fmt::format(
+                "Output tensor data type is not supported. (Supported types: Signed32 & Signed64) {}",
+                CHECK_LOCATION().AsString()));
+    }
+
+    auto inputTensorIndexes = AsUnsignedVector(GetInputTensorIds(m_Model, subgraphIndex, operatorIndex));
+    RegisterInputSlots(subgraphIndex, operatorIndex, layer, {inputTensorIndexes[0]});
+
+    auto outputTensorIndexes = AsUnsignedVector(GetOutputTensorIds(m_Model, subgraphIndex, operatorIndex));
+    RegisterOutputSlots(subgraphIndex, operatorIndex, layer, outputTensorIndexes);
+}
+
 void TfLiteParserImpl::ParseSqueeze(size_t subgraphIndex, size_t operatorIndex)
 {
     CHECK_MODEL(m_Model, subgraphIndex, operatorIndex);
-- 
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