IVGCVSW-7555 Restructure Delegate

* New folders created:
  * common is for common code where TfLite API is not used
  * classic is for existing delegate implementations
  * opaque is for new opaque delegate implementation,
  * tests is for shared between existing Delegate and Opaque Delegate which have test utils to work which delegate to use.
* Existing delegate is built to libarmnnDelegate.so and opaque delegate is built as libarmnnOpaqueDelegate.so
* Opaque structure is introduced but no API is added yet.
* CmakeList.txt and delegate/CMakeList.txt have been modified and 2 new CmakeList.txt added
* Rename BUILD_ARMNN_TFLITE_DELEGATE as BUILD_CLASSIC_DELEGATE
* Rename BUILD_ARMNN_TFLITE_OPAQUE_DELEGATE as BUILD_OPAQUE_DELEGATE

Signed-off-by: Teresa Charlin <teresa.charlinreyes@arm.com>
Change-Id: Ib682b9ad0ac8d8acdc4ec6d9099bb0008a9fe8ed
diff --git a/delegate/test/DepthwiseConvolution2dTest.cpp b/delegate/test/DepthwiseConvolution2dTest.cpp
new file mode 100644
index 0000000..9ee589c
--- /dev/null
+++ b/delegate/test/DepthwiseConvolution2dTest.cpp
@@ -0,0 +1,282 @@
+//
+// Copyright © 2020, 2023 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "ConvolutionTestHelper.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 <schema_generated.h>
+#include <tensorflow/lite/version.h>
+
+#include <doctest/doctest.h>
+
+namespace armnnDelegate
+{
+
+void DepthwiseConv2dValidReluFp32Test(std::vector<armnn::BackendId>& backends)
+{
+    // Set input data
+    std::vector<int32_t> inputShape { 1, 3, 2, 2 };
+    std::vector<int32_t> filterShape { 1, 2, 2, 4 };
+    std::vector<int32_t> biasShape { 4 };
+    std::vector<int32_t> outputShape { 1, 3, 3, 1 };
+
+    static std::vector<float> inputValues =
+        {
+            1, 2,  7,  8,
+            3, 4,  9, 10,
+            5, 6, 11, 12
+        };
+
+    std::vector<float> filterValues =
+        {
+            1,    2,   3,   4,
+           -9,   10, -11,  12,
+            5,    6,   7,   8,
+            13,  -14,  15, -16
+        };
+
+    std::vector<float> biasValues = { 1, 2, 3, 4 };
+
+    std::vector<float> expectedOutputValues =
+        {
+            71, 0,  99, 0,
+            91, 0, 127, 0
+        };
+
+    tflite::Padding padding = tflite::Padding_VALID;
+    int32_t depth_multiplier = 2;
+
+    ConvolutionTest<float>(tflite::BuiltinOperator_DEPTHWISE_CONV_2D,
+                           ::tflite::TensorType_FLOAT32,
+                           1, // strideX
+                           1, // strideY
+                           1, // dilationX
+                           1, // dilationY
+                           padding,
+                           tflite::ActivationFunctionType_RELU,
+                           backends,
+                           inputShape,
+                           filterShape,
+                           outputShape,
+                           inputValues,
+                           filterValues,
+                           expectedOutputValues,
+                           biasShape,
+                           biasValues,
+                           {1.0f}, // biasScale
+                           {0},    // biasOffset
+                           {1.0f}, // filterScale
+                           {0},    // filterOffsets
+                           2.0f,   // outputQuantScale
+                           0,      // outputQuantOffset
+                           1.0f,   // quantScale
+                           0,      // quantOffset
+                           depth_multiplier);
+}
+
+void DepthwiseConv2dSameUint8Test(std::vector<armnn::BackendId>& backends)
+{
+    // Set input data
+    std::vector<int32_t> inputShape { 1, 3, 3, 1 };
+    std::vector<int32_t> filterShape { 1, 3, 3, 1 };
+    std::vector<int32_t> biasShape { 1 } ;
+    std::vector<int32_t> outputShape { 1, 3, 3, 1 };
+
+    static std::vector<uint8_t> inputValues =
+        {
+            0, 1, 2,
+            3, 4, 5,
+            6, 7, 8
+        };
+
+    std::vector<uint8_t> filterValues = { 9, 8, 7,  6, 5, 4,  3, 2, 1 };
+
+    std::vector<int32_t> biasValues = { 10 };
+
+    std::vector<uint8_t> expectedOutputValues =
+        {
+            12,  23, 24, // ( 14+10)/2, ( 35+10)/2, ( 38+10)/2,
+            34,  65, 61, // ( 57+10)/2, (120+10)/2, (111+10)/2,
+            60, 104, 84  // (110+10)/2, (197+10)/2, (158+10)/2
+        };
+
+    tflite::Padding padding = tflite::Padding_SAME;
+
+    ConvolutionTest<uint8_t, int32_t>(tflite::BuiltinOperator_DEPTHWISE_CONV_2D,
+                                      ::tflite::TensorType_UINT8,
+                                      1, // strideX
+                                      1, // strideY
+                                      1, // dilationX
+                                      1, // dilationY
+                                      padding,
+                                      tflite::ActivationFunctionType_NONE,
+                                      backends,
+                                      inputShape,
+                                      filterShape,
+                                      outputShape,
+                                      inputValues,
+                                      filterValues,
+                                      expectedOutputValues,
+                                      biasShape,
+                                      biasValues);
+}
+
+void DepthwiseConv2dSameInt8PerChannelTest(std::vector<armnn::BackendId>& backends)
+{
+    // Set input data
+    std::vector<int32_t> inputShape { 1, 4, 4, 4 };
+    std::vector<int32_t> filterShape { 1, 2, 2, 16 };
+    std::vector<int32_t> biasShape {16} ;
+    std::vector<int32_t> outputShape { 1, 4, 4, 16 };
+
+    static std::vector<int8_t> inputValues =
+        {
+            3,3,3,4, 4,4,0,0, 0,3,4,3, 0,2,2,3,
+            3,0,3,0, 0,3,2,1, 4,1,2,2, 0,0,0,4,
+            3,2,2,2, 2,1,0,4, 4,3,2,4, 3,2,0,0,
+            4,1,4,4, 1,0,4,3, 3,2,0,3, 1,1,0,2
+        };
+
+    std::vector<int8_t> filterValues = { 12,20,10, 3, 2,24, 9,10, 5,16,30,12, 3,10, 4,32,
+                                           8, 0,30, 3, 0,16,12,15,20,12, 0, 3, 9,20, 8, 8,
+                                          12,15,20, 0, 0, 0, 3,15,15, 8,40,12, 9, 5, 2,24,
+                                           4, 0, 0, 6, 6, 0, 3, 5,20, 8,20, 3, 6,15, 4, 0 };
+    std::vector<float> filterScales = {         0.25,   0.2,        0.1, 0.3333333333,
+                                                 0.5, 0.125, 0.33333333,          0.2,
+                                                 0.2,  0.25,        0.1,  0.333333333,
+                                        0.3333333333,   0.2,        0.5,        0.125 };
+
+    int32_t filterQuantizationDim = 3;
+
+    int32_t depth_multiplier = 4;
+
+    std::vector<int32_t> biasValues = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+
+    float inputScale = 1.0f;
+    std::vector<float> biasScales {};
+    std::vector<int64_t> biasOffsets {};
+    std::vector<int64_t> filterOffsets {};
+    for (const auto& filterScale: filterScales)
+    {
+        biasScales.push_back(inputScale * filterScale);
+        // filter and bias offset always needs to be zero for per channel. We don't support anything else
+        biasOffsets.push_back(0);
+        filterOffsets.push_back(0);
+    }
+
+    std::vector<int8_t> expectedOutputValues =
+        {
+            26,21,21, 7,12,17,28,21,20,22,25,26, 6,11,10,16,
+            16,16, 4,12, 7,18,28,27,30,20,12,14,16,19,17, 6,
+            12,12, 8, 0, 3,13,18,15,18,26,20,26,26,32,28,21,
+            0, 0, 0, 0, 2, 6, 6, 4, 2, 8, 6, 8,15,10,10,24,
+            20,21, 9, 7, 3, 6,15,16,17,22,17,22,17,18,14, 7,
+            18, 6,16,12,12,11,17,15,18,18,10,12,27,26,22,18,
+            27,28,12,10, 7, 3, 8,13, 8,12,14,16,26,24,24,24,
+            9, 9, 6, 0, 0, 0, 2, 6, 0, 0, 0, 0, 4, 8, 8,16,
+            26,24,17, 7, 2, 8,11,10,30,24,30,28,32,33,30,24,
+            20,11,16,12, 7, 9,17,13,20,14,16,18,31,36,33,29,
+            28,25,19, 9, 6,13,20,19, 2, 8, 6, 8,17,17,15,25,
+            12,15, 5, 3, 2, 6, 7, 7, 0, 0, 0, 0, 6, 2, 2, 6,
+            14,16, 7, 5, 1, 3, 3, 2,20,28,12,20,13,20,20,19,
+            9, 4,10, 4, 0, 4, 8, 6, 4,16,12,16,12,18,18,15,
+            11,12, 6, 4, 2, 8,10, 7, 0, 0, 0, 0, 9,14,14,14,
+            3, 4, 1, 1, 1, 3, 3, 2, 0, 0, 0, 0, 2, 4, 4, 8
+        };
+
+    tflite::Padding padding = tflite::Padding_SAME;
+
+    ConvolutionTest<int8_t, int32_t>(tflite::BuiltinOperator_DEPTHWISE_CONV_2D,
+                                      ::tflite::TensorType_INT8,
+                                      1, // strideX
+                                      1, // strideY
+                                      1, // dilationX
+                                      1, // dilationY
+                                      padding,
+                                      tflite::ActivationFunctionType_NONE,
+                                      backends,
+                                      inputShape,
+                                      filterShape,
+                                      outputShape,
+                                      inputValues,
+                                      filterValues,
+                                      expectedOutputValues,
+                                      biasShape,
+                                      biasValues,
+                                      biasScales,
+                                      biasOffsets,
+                                      filterScales,
+                                      filterOffsets,
+                                      1.0f,
+                                      0,
+                                      inputScale,
+                                      0,
+                                      depth_multiplier,
+                                      filterQuantizationDim);
+}
+
+TEST_SUITE("DepthwiseConv2d_CpuRef_Tests")
+{
+
+TEST_CASE ("DepthwiseConv2d_Valid_Relu_Fp32_CpuRef_Test")
+{
+    std::vector<armnn::BackendId> backends = {armnn::Compute::CpuRef};
+    DepthwiseConv2dValidReluFp32Test(backends);
+}
+
+TEST_CASE ("DepthwiseConv2d_Same_Uint8_CpuRef_Test")
+{
+    std::vector<armnn::BackendId> backends = {armnn::Compute::CpuRef};
+    DepthwiseConv2dSameUint8Test(backends);
+}
+
+TEST_CASE ("DepthwiseConv2d_Same_Int8_PerChannelQuantization_CpuRef_Test")
+{
+    std::vector<armnn::BackendId> backends = {armnn::Compute::CpuRef};
+    DepthwiseConv2dSameInt8PerChannelTest(backends);
+}
+
+}//End of TEST_SUITE("DepthwiseConv2d_CpuRef_Tests")
+
+TEST_SUITE("DepthwiseConv2d_CpuAcc_Tests")
+{
+
+TEST_CASE ("DepthwiseConv2d_Valid_Relu_Fp32_CpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = {armnn::Compute::CpuAcc};
+    DepthwiseConv2dValidReluFp32Test(backends);
+}
+
+TEST_CASE ("DepthwiseConv2d_Same_Uint8_CpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = {armnn::Compute::CpuAcc};
+    DepthwiseConv2dSameUint8Test(backends);
+}
+
+}//End of TEST_SUITE("DepthwiseConv2d_CpuAcc_Tests")
+
+TEST_SUITE("DepthwiseConv2d_GpuAcc_Tests")
+{
+
+TEST_CASE ("DepthwiseConv2d_Valid_Relu_Fp32_GpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = {armnn::Compute::GpuAcc};
+    DepthwiseConv2dValidReluFp32Test(backends);
+}
+
+TEST_CASE ("DepthwiseConv2d_Same_Uint8_GpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = {armnn::Compute::GpuAcc};
+    DepthwiseConv2dSameUint8Test(backends);
+}
+
+}//End of TEST_SUITE("DepthwiseConv2d_GpuAcc_Tests")
+
+} // namespace armnnDelegate
\ No newline at end of file