From 21fe06fad6760a0d453f2de9c8dd790983ae940c Mon Sep 17 00:00:00 2001
From: Mike Kelly <mike.kelly@arm.com>
Date: Mon, 16 May 2022 23:10:42 +0100
Subject: IVGCVSW-6929 Support for models with implicit expanded  dimensions

 * Added allow-expanded-dims to TFLite parser and ArmNN delegate
   * If true ArmNN will disregard dimensions with a size of 1 when
     validating tensor shapes. Tensor sizes must still match.
   * This allows us to support models where tensors have expanded
     dimensions (i.e. extra dimensions with a size of 1).
 * Fixed bug in Network where it assumed that only the first option
   could be ShapeInferenceMethod.
 * Fixed bug where m_ShapeInferenceMethod was lost when copying or
   moving Graphs.
 * Changed Delegate to pass "infer-output-shape", "allow-expanded-dims"
   and other BackendOptions through to the Network during construction.

Signed-off-by: Mike Kelly <mike.kelly@arm.com>
Change-Id: Ibe7c5ae6597796fc9164cb07bd372bd7f8f8cacf
---
 src/armnn/Network.cpp | 29 ++++++++++++++++++++++++-----
 1 file changed, 24 insertions(+), 5 deletions(-)

(limited to 'src/armnn/Network.cpp')

diff --git a/src/armnn/Network.cpp b/src/armnn/Network.cpp
index 77ad5c4dc2..6a646d3cc8 100644
--- a/src/armnn/Network.cpp
+++ b/src/armnn/Network.cpp
@@ -1854,16 +1854,35 @@ IOptimizedNetworkPtr Optimize(const INetwork& inNetwork,
 
 bool NetworkImpl::GetShapeInferenceMethod()
 {
-    if (m_NetworkOptions.size() > 0 && m_NetworkOptions[0].GetBackendId().Get() == "ShapeInferenceMethod")
+    bool shapeInferenceMethod = false;
+
+    ParseOptions(m_NetworkOptions, "ShapeInferenceMethod", [&](std::string name, const BackendOptions::Var& value)
     {
-        return m_NetworkOptions[0].GetOption(0).GetValue().AsBool();
-    }
+        if (name == "InferAndValidate")
+        {
+            shapeInferenceMethod |= value.AsBool();
+        }
+    });
+    return shapeInferenceMethod;
+}
 
-    return false;
+bool NetworkImpl::GetAllowExpandedDims()
+{
+    bool allowExpandedDims = false;
+
+    ParseOptions(m_NetworkOptions, "AllowExpandedDims", [&](std::string name, const BackendOptions::Var& value)
+    {
+        if (name == "AllowExpandedDims")
+        {
+            allowExpandedDims |= value.AsBool();
+        }
+    });
+    return allowExpandedDims;
 }
+
 NetworkImpl::NetworkImpl(NetworkOptions networkOptions)
 : m_NetworkOptions(networkOptions),
-  m_Graph(std::make_unique<Graph>(GetShapeInferenceMethod()))
+  m_Graph(std::make_unique<Graph>(GetShapeInferenceMethod(), GetAllowExpandedDims()))
 {}
 
 NetworkImpl::~NetworkImpl()
-- 
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