IVGCVSW-2844: Add TfLite Parser support for Split layer

* Added ParseSplit method
* New Unit test Split.cpp
* Updated TensorflowLiteSupport.md with new supported operator

Change-Id: Iec80ba9ad7b48db8e86589ebae77bd7d8ed38fb2
Signed-off-by: Nina Drozd <nina.drozd@arm.com>

1 files changed, 137 insertions, 0 deletions

diff --git a/src/armnnTfLiteParser/test/Split.cpp b/src/armnnTfLiteParser/test/Split.cpp
new file mode 100644
index 0000000000..774a416750
--- /dev/null
+++ b/src/armnnTfLiteParser/test/Split.cpp
@@ -0,0 +1,137 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include <boost/test/unit_test.hpp>
+#include "ParserFlatbuffersFixture.hpp"
+#include "../TfLiteParser.hpp"
+
+#include <string>
+#include <iostream>
+
+BOOST_AUTO_TEST_SUITE(TensorflowLiteParser)
+
+struct SplitFixture : public ParserFlatbuffersFixture
+{
+    explicit SplitFixture(const std::string & inputShape,
+                          const std::string & axisShape,
+                          const std::string & numSplits,
+                          const std::string & outputShape1,
+                          const std::string & outputShape2)
+    {
+        m_JsonString = R"(
+            {
+                "version": 3,
+                "operator_codes": [ { "builtin_code": "SPLIT" } ],
+                "subgraphs": [ {
+                    "tensors": [
+                        {
+                            "shape": )" + inputShape + R"(,
+                            "type": "FLOAT32",
+                            "buffer": 0,
+                            "name": "inputTensor",
+                            "quantization": {
+                                "min": [ 0.0 ],
+                                "max": [ 255.0 ],
+                                "scale": [ 1.0 ],
+                                "zero_point": [ 0 ],
+                            }
+                        },
+                        {
+                            "shape": )" + axisShape + R"(,
+                            "type": "INT32",
+                            "buffer": 1,
+                            "name": "axis",
+                            "quantization": {
+                                "min": [ 0.0 ],
+                                "max": [ 255.0 ],
+                                "scale": [ 1.0 ],
+                                "zero_point": [ 0 ],
+                            }
+                        },
+                        {
+                            "shape": )" + outputShape1 + R"( ,
+                            "type": "FLOAT32",
+                            "buffer": 2,
+                            "name": "outputTensor1",
+                            "quantization": {
+                                "min": [ 0.0 ],
+                                "max": [ 255.0 ],
+                                "scale": [ 1.0 ],
+                                "zero_point": [ 0 ],
+                            }
+                        },
+                        {
+                            "shape": )" + outputShape2 + R"( ,
+                            "type": "FLOAT32",
+                            "buffer": 3,
+                            "name": "outputTensor2",
+                            "quantization": {
+                                "min": [ 0.0 ],
+                                "max": [ 255.0 ],
+                                "scale": [ 1.0 ],
+                                "zero_point": [ 0 ],
+                            }
+                        }
+                    ],
+                    "inputs": [ 0, 1 ],
+                    "outputs": [ 2, 3 ],
+                    "operators": [
+                        {
+                            "opcode_index": 0,
+                            "inputs": [ 0, 1 ],
+                            "outputs": [ 2, 3 ],
+                            "builtin_options_type": "SplitOptions",
+                            "builtin_options": {
+                                "num_splits": )" + numSplits + R"(
+                            },
+                            "custom_options_format": "FLEXBUFFERS"
+                        }
+                    ],
+                } ],
+                "buffers" : [ {}, {} ]
+            }
+        )";
+
+        Setup();
+    }
+};
+
+
+struct SimpleSplitFixture : SplitFixture
+{
+    SimpleSplitFixture() : SplitFixture( "[ 2, 2, 2, 2 ]", "[ 1 ]", "2",
+        "[ 2, 1, 2, 2 ]", "[ 2, 1, 2, 2 ]")
+         {}
+};
+
+BOOST_FIXTURE_TEST_CASE(ParseAxisOneSplitTwo, SimpleSplitFixture)
+{
+
+    RunTest<4, armnn::DataType::Float32>(
+        0,
+        { {"inputTensor", { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f, 9.0f, 10.0f,
+                            11.0f, 12.0f, 13.0f, 14.0f, 15.0f, 16.0f } } },
+        { {"outputTensor1", { 1.0f, 2.0f, 3.0f, 4.0f, 9.0f, 10.0f, 11.0f, 12.0f }},
+          {"outputTensor2", { 5.0f, 6.0f, 7.0f, 8.0f, 13.0f, 14.0f, 15.0f, 16.0f }}});
+}
+
+struct SimpleSplitAxisThreeFixture : SplitFixture
+{
+    SimpleSplitAxisThreeFixture() : SplitFixture( "[ 2, 2, 2, 2 ]", "[ 3 ]", "2",
+        "[ 2, 2, 2, 1 ]", "[ 2, 2, 2, 1 ]")
+    {}
+};
+
+BOOST_FIXTURE_TEST_CASE(ParseAxisThreeSplitTwo, SimpleSplitAxisThreeFixture)
+{
+    RunTest<4, armnn::DataType::Float32>(
+        0,
+        { {"inputTensor", { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f, 9.0f, 10.0f,
+                            11.0f, 12.0f, 13.0f, 14.0f, 15.0f, 16.0f } } },
+        { {"outputTensor1", { 1.0f, 3.0f, 5.0f, 7.0f, 9.0f, 11.0f, 13.0f, 15.0f }},
+          {"outputTensor2", { 2.0f, 4.0f, 6.0f, 8.0f, 10.0f, 12.0f, 14.0f, 16.0f } } } );
+}
+
+BOOST_AUTO_TEST_SUITE_END()
\ No newline at end of file