IVGCVSW-5396 TfLiteDelegate: Implement the Resize operators

* Added resize biliniear and nearest neighbour operator
  support to the tflite delegate

Signed-off-by: Jan Eilers <jan.eilers@arm.com>
Change-Id: Id0113d6b865ea282c6f4de55e8419a6244a35f0e

1 files changed, 134 insertions, 0 deletions

diff --git a/delegate/src/test/ResizeTest.cpp b/delegate/src/test/ResizeTest.cpp
new file mode 100644
index 0000000000..394ad6c7ae
--- /dev/null
+++ b/delegate/src/test/ResizeTest.cpp
@@ -0,0 +1,134 @@
+//
+// Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "ResizeTestHelper.hpp"
+
+#include <armnn_delegate.hpp>
+
+#include <flatbuffers/flatbuffers.h>
+#include <tensorflow/lite/interpreter.h>
+#include <tensorflow/lite/kernels/register.h>
+#include <tensorflow/lite/model.h>
+#include <tensorflow/lite/schema/schema_generated.h>
+#include <tensorflow/lite/version.h>
+
+#include <doctest/doctest.h>
+
+namespace armnnDelegate
+{
+
+void ResizeBiliniarFloat32Test(std::vector<armnn::BackendId>& backends)
+{
+    // Set input data
+    std::vector<float> input1Values
+        {
+            0.0f, 1.0f, 2.0f,
+            3.0f, 4.0f, 5.0f,
+            6.0f, 7.0f, 8.0f
+        };
+    const std::vector<int32_t> input2NewShape { 5, 5 };
+
+    // Calculate output data
+    std::vector<float> expectedOutputValues
+        {
+            0.0f, 0.6f, 1.2f, 1.8f, 2.0f,
+            1.8f, 2.4f, 3.0f, 3.6f, 3.8f,
+            3.6f, 4.2f, 4.8f, 5.4f, 5.6f,
+            5.4f, 6.0f, 6.6f, 7.2f, 7.4f,
+            6.0f, 6.6f, 7.2f, 7.8f, 8.0f
+        };
+
+    const std::vector<int32_t> input1Shape { 1, 3, 3, 1 };
+    const std::vector<int32_t> input2Shape { 2 };
+    const std::vector<int32_t> expectedOutputShape = input2NewShape;
+
+    ResizeFP32TestImpl(tflite::BuiltinOperator_RESIZE_BILINEAR,
+                       backends,
+                       input1Values,
+                       input1Shape,
+                       input2NewShape,
+                       input2Shape,
+                       expectedOutputValues,
+                       expectedOutputShape);
+}
+
+void ResizeNearestNeighbourFloat32Test(std::vector<armnn::BackendId>& backends)
+{
+    // Set input data
+    std::vector<float> input1Values {  1.0f, 2.0f, 3.0f, 4.0f }
+    ;
+    const std::vector<int32_t> input2NewShape { 1, 1 };
+
+    // Calculate output data
+    std::vector<float> expectedOutputValues { 1.0f };
+
+    const std::vector<int32_t> input1Shape { 1, 2, 2, 1 };
+    const std::vector<int32_t> input2Shape { 2 };
+    const std::vector<int32_t> expectedOutputShape = input2NewShape;
+
+    ResizeFP32TestImpl(tflite::BuiltinOperator_RESIZE_NEAREST_NEIGHBOR,
+                       backends,
+                       input1Values,
+                       input1Shape,
+                       input2NewShape,
+                       input2Shape,
+                       expectedOutputValues,
+                       expectedOutputShape);
+}
+
+TEST_SUITE("ResizeTests_GpuAccTests")
+{
+
+TEST_CASE ("Resize_Biliniar_Float32_GpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::GpuAcc };
+    ResizeBiliniarFloat32Test(backends);
+}
+
+TEST_CASE ("Resize_NearestNeighbour_Float32_GpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::GpuAcc };
+    ResizeNearestNeighbourFloat32Test(backends);
+}
+
+} // TEST_SUITE("ResizeTests_GpuAccTests")
+
+
+TEST_SUITE("ResizeTests_CpuAccTests")
+{
+
+TEST_CASE ("Resize_Biliniar_Float32_CpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuAcc };
+    ResizeBiliniarFloat32Test(backends);
+}
+
+TEST_CASE ("Resize_NearestNeighbour_Float32_CpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuAcc };
+    ResizeNearestNeighbourFloat32Test(backends);
+}
+
+} // TEST_SUITE("ResizeTests_CpuAccTests")
+
+
+TEST_SUITE("ResizeTests_CpuRefTests")
+{
+
+TEST_CASE ("Resize_Biliniar_Float32_CpuRef_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuRef };
+    ResizeBiliniarFloat32Test(backends);
+}
+
+TEST_CASE ("Resize_NearestNeighbour_Float32_CpuRef_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuRef };
+    ResizeNearestNeighbourFloat32Test(backends);
+}
+
+} // TEST_SUITE("ResizeTests_CpuRefTests")
+
+} // namespace armnnDelegate