Add example Unity plugin for the experimental TFLite C API.

Instructions for using the Plugin are contained in
the readme @ TensorFlowLitePlugin/README.md

PiperOrigin-RevId: 206201614

36 files changed, 2087 insertions, 6 deletions

diff --git a/tensorflow/contrib/lite/experimental/c/BUILD b/tensorflow/contrib/lite/experimental/c/BUILD
index b09bb9ea10..50f8da66d0 100644
--- a/tensorflow/contrib/lite/experimental/c/BUILD
+++ b/tensorflow/contrib/lite/experimental/c/BUILD
@@ -5,6 +5,7 @@ licenses(["notice"])  # Apache 2.0
 load(
     "//tensorflow/contrib/lite:build_def.bzl",
     "tflite_cc_shared_object",
+    "tflite_copts",
     "tflite_jni_binary",
 )
 
@@ -30,16 +31,11 @@ tflite_cc_shared_object(
     ],
 )
 
-tflite_jni_binary(
-    name = "libtensorflowlite_c_jni.so",
-    linkscript = ":version_script.lds",
-    deps = [":c_api"],
-)
-
 cc_library(
     name = "c_api",
     srcs = ["c_api.cc"],
     hdrs = ["c_api.h"],
+    copts = tflite_copts(),
     deps = [
         "//tensorflow/contrib/lite:context",
         "//tensorflow/contrib/lite:framework",
diff --git a/tensorflow/contrib/lite/experimental/c/c_api.cc b/tensorflow/contrib/lite/experimental/c/c_api.cc
index add4c6813d..9d29e8b3e0 100644
--- a/tensorflow/contrib/lite/experimental/c/c_api.cc
+++ b/tensorflow/contrib/lite/experimental/c/c_api.cc
@@ -27,6 +27,8 @@ struct _TFL_Interpreter {
   std::unique_ptr<tflite::Interpreter> impl;
 };
 
+// LINT.IfChange
+
 TFL_Interpreter* TFL_NewInterpreter(const void* model_data,
                                     int32_t model_size) {
   auto model = tflite::FlatBufferModel::BuildFromBuffer(
@@ -113,6 +115,8 @@ TFL_Status TFL_TensorCopyToBuffer(const TFL_Tensor* tensor, void* output_data,
   return kTfLiteOk;
 }
 
+// LINT.ThenChange(//tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/SDK/Scripts/Interpreter.cs)
+
 #ifdef __cplusplus
 }  // extern "C"
 #endif  // __cplusplus
diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/.gitignore b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/.gitignore
new file mode 100644
index 0000000000..c72a5cae9e
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/.gitignore
@@ -0,0 +1,13 @@
+# Unity generated
+Builds/
+Temp/
+Library/
+obj/
+# Visual Studio / MonoDevelop generated
+*.csproj
+*.unityproj
+*.sln
+*.suo
+*.userprefs
+# OS generated
+.DS_Store
diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite.meta b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite.meta
new file mode 100644
index 0000000000..ed9337b53e
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite.meta
@@ -0,0 +1,8 @@
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+folderAsset: yes
+DefaultImporter:
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples.meta b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples.meta
new file mode 100644
index 0000000000..edcce00939
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples.meta
@@ -0,0 +1,8 @@
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite.meta b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite.meta
new file mode 100644
index 0000000000..36b35516f0
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite.meta
@@ -0,0 +1,8 @@
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scenes.meta b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scenes.meta
new file mode 100644
index 0000000000..d4133da49a
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scenes.meta
@@ -0,0 +1,8 @@
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scenes/HelloTFLite.unity b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scenes/HelloTFLite.unity
new file mode 100644
index 0000000000..9397d8f27a
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scenes/HelloTFLite.unity
@@ -0,0 +1,242 @@
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scenes/HelloTFLite.unity.meta b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scenes/HelloTFLite.unity.meta
new file mode 100644
index 0000000000..e1e13efb66
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scenes/HelloTFLite.unity.meta
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scenes/add.bytes b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scenes/add.bytes
new file mode 100644
index 0000000000..aef0fe3d82
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scenes/add.bytes
diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scenes/add.bytes.meta b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scenes/add.bytes.meta
new file mode 100644
index 0000000000..ba24871413
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scenes/add.bytes.meta
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scripts.meta b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scripts.meta
new file mode 100644
index 0000000000..28fde68b8b
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scripts.meta
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scripts/HelloTFLite.cs b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scripts/HelloTFLite.cs
new file mode 100644
index 0000000000..abca814499
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scripts/HelloTFLite.cs
@@ -0,0 +1,70 @@
+/* Copyright 2018 The TensorFlow Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using TensorFlowLite;
+using UnityEngine;
+
+/// <summary>
+/// Simple example demonstrating use of the experimental C# bindings for TensorFlowLite.
+/// </summary>
+public class HelloTFLite : MonoBehaviour {
+
+  [Tooltip("Configurable TFLite model.")]
+  public TextAsset model;
+
+  [Tooltip("Configurable TFLite input tensor data.")]
+  public float[] inputs;
+
+  private Interpreter interpreter;
+  private float[] outputs;
+
+  void Start () {
+    interpreter = new Interpreter(model.bytes);
+    Debug.LogFormat("InputCount: {0}, OutputCount: {1}",
+                    interpreter.GetInputTensorCount(),
+                    interpreter.GetOutputTensorCount());
+  }
+
+  void Update () {
+    if (inputs == null) {
+      return;
+    }
+
+    if (outputs == null || outputs.Length != inputs.Length) {
+      interpreter.ResizeInputTensor(0, new int[]{inputs.Length});
+      interpreter.AllocateTensors();
+      outputs = new float[inputs.Length];
+    }
+
+    interpreter.SetInputTensorData(0, inputs);
+    interpreter.Invoke();
+    interpreter.GetOutputTensorData(0, outputs);
+
+    Debug.LogFormat("Input: {0}, Output: {1}",
+                    ArrayToString(inputs),
+                    ArrayToString(outputs));
+  }
+
+  void OnDestroy() {
+    interpreter.Dispose();
+  }
+
+   private static string ArrayToString(float[] values) {
+    return string.Join(",", values.Select(x => x.ToString()).ToArray());
+  }
+}
diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scripts/HelloTFLite.cs.meta b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scripts/HelloTFLite.cs.meta
new file mode 100644
index 0000000000..ba83f45084
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/Examples/HelloTFLite/Scripts/HelloTFLite.cs.meta
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/SDK.meta b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/SDK.meta
new file mode 100644
index 0000000000..bf5ce15c6a
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/SDK/Scripts.meta b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/SDK/Scripts.meta
new file mode 100644
index 0000000000..22ed2c466b
--- /dev/null
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@@ -0,0 +1,8 @@
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/SDK/Scripts/Interpreter.cs b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/SDK/Scripts/Interpreter.cs
new file mode 100644
index 0000000000..ab966bae2e
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/SDK/Scripts/Interpreter.cs
@@ -0,0 +1,145 @@
+/* Copyright 2018 The TensorFlow Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+using System;
+using System.Runtime.InteropServices;
+
+using TFL_Interpreter = System.IntPtr;
+using TFL_Tensor = System.IntPtr;
+
+namespace TensorFlowLite
+{
+  /// <summary>
+  /// Simple C# bindings for the experimental TensorFlowLite C API.
+  /// </summary>
+  public class Interpreter : IDisposable
+  {
+    private const string TensorFlowLibrary = "tensorflowlite_c";
+
+    private TFL_Interpreter handle;
+
+    public Interpreter(byte[] modelData) {
+      GCHandle modelDataHandle = GCHandle.Alloc(modelData, GCHandleType.Pinned);
+      IntPtr modelDataPtr = modelDataHandle.AddrOfPinnedObject();
+      handle = TFL_NewInterpreter(modelDataPtr, modelData.Length);
+      if (handle == IntPtr.Zero) throw new Exception("Failed to create TensorFlowLite Interpreter");
+    }
+
+    ~Interpreter() {
+      Dispose();
+    }
+
+    public void Dispose() {
+      if (handle != IntPtr.Zero) TFL_DeleteInterpreter(handle);
+      handle = IntPtr.Zero;
+    }
+
+    public void Invoke() {
+      ThrowIfError(TFL_InterpreterInvoke(handle));
+    }
+
+    public int GetInputTensorCount() {
+      return TFL_InterpreterGetInputTensorCount(handle);
+    }
+
+    public void SetInputTensorData(int inputTensorIndex, Array inputTensorData) {
+      GCHandle tensorDataHandle = GCHandle.Alloc(inputTensorData, GCHandleType.Pinned);
+      IntPtr tensorDataPtr = tensorDataHandle.AddrOfPinnedObject();
+      TFL_Tensor tensor = TFL_InterpreterGetInputTensor(handle, inputTensorIndex);
+      ThrowIfError(TFL_TensorCopyFromBuffer(
+          tensor, tensorDataPtr, Buffer.ByteLength(inputTensorData)));
+    }
+
+    public void ResizeInputTensor(int inputTensorIndex, int[] inputTensorShape) {
+      ThrowIfError(TFL_InterpreterResizeInputTensor(
+          handle, inputTensorIndex, inputTensorShape, inputTensorShape.Length));
+    }
+
+    public void AllocateTensors() {
+      ThrowIfError(TFL_InterpreterAllocateTensors(handle));
+    }
+
+    public int GetOutputTensorCount() {
+      return TFL_InterpreterGetOutputTensorCount(handle);
+    }
+
+    public void GetOutputTensorData(int outputTensorIndex, Array outputTensorData) {
+      GCHandle tensorDataHandle = GCHandle.Alloc(outputTensorData, GCHandleType.Pinned);
+      IntPtr tensorDataPtr = tensorDataHandle.AddrOfPinnedObject();
+      TFL_Tensor tensor = TFL_InterpreterGetOutputTensor(handle, outputTensorIndex);
+      ThrowIfError(TFL_TensorCopyToBuffer(
+          tensor, tensorDataPtr, Buffer.ByteLength(outputTensorData)));
+    }
+
+    private static void ThrowIfError(int resultCode) {
+      if (resultCode != 0) throw new Exception("TensorFlowLite operation failed.");
+    }
+
+    #region Externs
+
+    [DllImport (TensorFlowLibrary)]
+    private static extern unsafe TFL_Interpreter TFL_NewInterpreter(
+        IntPtr model_data,
+        int model_size);
+
+    [DllImport (TensorFlowLibrary)]
+    private static extern unsafe void TFL_DeleteInterpreter(TFL_Interpreter interpreter);
+
+    [DllImport (TensorFlowLibrary)]
+    private static extern unsafe int TFL_InterpreterGetInputTensorCount(
+        TFL_Interpreter interpreter);
+
+    [DllImport (TensorFlowLibrary)]
+    private static extern unsafe TFL_Tensor TFL_InterpreterGetInputTensor(
+        TFL_Interpreter interpreter,
+        int input_index);
+
+    [DllImport (TensorFlowLibrary)]
+    private static extern unsafe int TFL_InterpreterResizeInputTensor(
+        TFL_Interpreter interpreter,
+        int input_index,
+        int[] input_dims,
+        int input_dims_size);
+
+    [DllImport (TensorFlowLibrary)]
+    private static extern unsafe int TFL_InterpreterAllocateTensors(
+        TFL_Interpreter interpreter);
+
+    [DllImport (TensorFlowLibrary)]
+    private static extern unsafe int TFL_InterpreterInvoke(TFL_Interpreter interpreter);
+
+    [DllImport (TensorFlowLibrary)]
+    private static extern unsafe int TFL_InterpreterGetOutputTensorCount(
+        TFL_Interpreter interpreter);
+
+    [DllImport (TensorFlowLibrary)]
+    private static extern unsafe TFL_Tensor TFL_InterpreterGetOutputTensor(
+        TFL_Interpreter interpreter,
+        int output_index);
+
+    [DllImport (TensorFlowLibrary)]
+    private static extern unsafe int TFL_TensorCopyFromBuffer(
+        TFL_Tensor tensor,
+        IntPtr input_data,
+        int input_data_size);
+
+    [DllImport (TensorFlowLibrary)]
+    private static extern unsafe int TFL_TensorCopyToBuffer(
+        TFL_Tensor tensor,
+        IntPtr output_data,
+        int output_data_size);
+
+    #endregion
+  }
+}
diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/SDK/Scripts/Interpreter.cs.meta b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/SDK/Scripts/Interpreter.cs.meta
new file mode 100644
index 0000000000..5ec84ef7f7
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/Assets/TensorFlowLite/SDK/Scripts/Interpreter.cs.meta
@@ -0,0 +1,11 @@
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+guid: 0bbaf59e6ac914ed1b28174fb9008a09
+MonoImporter:
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/AudioManager.asset b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/AudioManager.asset
new file mode 100644
index 0000000000..da6112576a
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/AudioManager.asset
@@ -0,0 +1,17 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!11 &1
+AudioManager:
+  m_ObjectHideFlags: 0
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+  m_SampleRate: 0
+  m_DSPBufferSize: 0
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+  m_SpatializerPlugin: 
+  m_AmbisonicDecoderPlugin: 
+  m_DisableAudio: 0
+  m_VirtualizeEffects: 1
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new file mode 100644
index 0000000000..e7886b266a
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/ClusterInputManager.asset
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+%YAML 1.1
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new file mode 100644
index 0000000000..78992f08c7
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/DynamicsManager.asset
@@ -0,0 +1,29 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
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new file mode 100644
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new file mode 100644
index 0000000000..fcd016402f
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new file mode 100644
index 0000000000..17c8f538e2
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new file mode 100644
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+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/NavMeshAreas.asset
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/NetworkManager.asset b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/NetworkManager.asset
new file mode 100644
index 0000000000..5dc6a831d9
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/NetworkManager.asset
@@ -0,0 +1,8 @@
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new file mode 100644
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/ProjectVersion.txt b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/ProjectVersion.txt
new file mode 100644
index 0000000000..4a9cfb61ab
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/ProjectVersion.txt
@@ -0,0 +1 @@
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/QualitySettings.asset b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/QualitySettings.asset
new file mode 100644
index 0000000000..05daac3c49
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/QualitySettings.asset
@@ -0,0 +1,191 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/TagManager.asset b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/TagManager.asset
new file mode 100644
index 0000000000..1c92a7840e
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/TagManager.asset
@@ -0,0 +1,43 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!78 &1
+TagManager:
+  serializedVersion: 2
+  tags: []
+  layers:
+  - Default
+  - TransparentFX
+  - Ignore Raycast
+  - 
+  - Water
+  - UI
+  - 
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/TimeManager.asset b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/TimeManager.asset
new file mode 100644
index 0000000000..558a017e1f
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/TimeManager.asset
@@ -0,0 +1,9 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!5 &1
+TimeManager:
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+  Maximum Allowed Timestep: 0.33333334
+  m_TimeScale: 1
+  Maximum Particle Timestep: 0.03
diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/UnityConnectSettings.asset b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/UnityConnectSettings.asset
new file mode 100644
index 0000000000..3da14d5baf
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/ProjectSettings/UnityConnectSettings.asset
@@ -0,0 +1,34 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!310 &1
+UnityConnectSettings:
+  m_ObjectHideFlags: 0
+  m_Enabled: 0
+  m_TestMode: 0
+  m_TestEventUrl: 
+  m_TestConfigUrl: 
+  m_TestInitMode: 0
+  CrashReportingSettings:
+    m_EventUrl: https://perf-events.cloud.unity3d.com/api/events/crashes
+    m_NativeEventUrl: https://perf-events.cloud.unity3d.com/symbolicate
+    m_Enabled: 0
+    m_CaptureEditorExceptions: 1
+  UnityPurchasingSettings:
+    m_Enabled: 0
+    m_TestMode: 0
+  UnityAnalyticsSettings:
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+    m_TestMode: 0
+    m_TestEventUrl: 
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diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/README.md b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/README.md
new file mode 100644
index 0000000000..0b3813fccb
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/README.md
@@ -0,0 +1,24 @@
+# TF Lite Experimental Unity Plugin
+
+This directoryy contains an experimental sample Unity (2017) Plugin, based on
+the experimental TF Lite C API. The sample demonstrates running inference within
+Unity by way of a C# `Interpreter` wrapper.
+
+Note that the native TF Lite plugin(s) *must* be built before using the Unity
+Plugin, and placed in Assets/TensorFlowLite/SDK/Plugins/. For the editor (note
+that this has only been tested on Linux; the syntax may differ on Mac/Windows):
+
+```sh
+bazel build -c opt --cxxopt=--std=c++11 \
+  //tensorflow/contrib/lite/experimental/c:libtensorflowlite_c.so
+```
+
+and for Android:
+
+```sh
+bazel build -c opt --cxxopt=--std=c++11 \
+  --crosstool_top=//external:android/crosstool \
+  --host_crosstool_top=@bazel_tools//tools/cpp:toolchain \
+  --cpu=armeabi-v7a \
+  //tensorflow/contrib/lite/experimental/c:libtensorflowlite_c.so
+```
diff --git a/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/UnityPackageManager/manifest.json b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/UnityPackageManager/manifest.json
new file mode 100644
index 0000000000..526aca6057
--- /dev/null
+++ b/tensorflow/contrib/lite/experimental/examples/unity/TensorFlowLitePlugin/UnityPackageManager/manifest.json
@@ -0,0 +1,4 @@
+{
+	"dependencies": {
+	}
+}