Opensource ML embedded evaluation kit

Change-Id: I12e807f19f5cacad7cef82572b6dd48252fd61fd
diff --git a/source/use_case/img_class/include/MobileNetModel.hpp b/source/use_case/img_class/include/MobileNetModel.hpp
new file mode 100644
index 0000000..f0521ce
--- /dev/null
+++ b/source/use_case/img_class/include/MobileNetModel.hpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2021 Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+#ifndef IMG_CLASS_MOBILENETMODEL_HPP
+#define IMG_CLASS_MOBILENETMODEL_HPP
+
+#include "Model.hpp"
+
+namespace arm {
+namespace app {
+
+    class MobileNetModel : public Model {
+
+    public:
+        /* Indices for the expected model - based on input tensor shape */
+        static constexpr uint32_t ms_inputRowsIdx     = 1;
+        static constexpr uint32_t ms_inputColsIdx     = 2;
+        static constexpr uint32_t ms_inputChannelsIdx = 3;
+
+    protected:
+        /** @brief   Gets the reference to op resolver interface class. */
+        const tflite::MicroOpResolver& GetOpResolver() override;
+
+        /** @brief   Adds operations to the op resolver instance. */
+        bool EnlistOperations() override;
+
+        const uint8_t* ModelPointer() override;
+
+        size_t ModelSize() override;
+
+    private:
+        /* Maximum number of individual operations that can be enlisted. */
+        static constexpr int _ms_maxOpCnt = 7;
+
+        /* A mutable op resolver instance. */
+        tflite::MicroMutableOpResolver<_ms_maxOpCnt> _m_opResolver;
+    };
+
+} /* namespace app */
+} /* namespace arm */
+
+#endif /* IMG_CLASS_MOBILENETMODEL_HPP */
\ No newline at end of file
diff --git a/source/use_case/img_class/include/UseCaseHandler.hpp b/source/use_case/img_class/include/UseCaseHandler.hpp
new file mode 100644
index 0000000..a6cf104
--- /dev/null
+++ b/source/use_case/img_class/include/UseCaseHandler.hpp
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2021 Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+#ifndef IMG_CLASS_EVT_HANDLER_HPP
+#define IMG_CLASS_EVT_HANDLER_HPP
+
+#include "AppContext.hpp"
+
+namespace arm {
+namespace app {
+
+    /**
+     * @brief       Handles the inference event.
+     * @param[in]   ctx        Pointer to the application context.
+     * @param[in]   imgIndex   Index to the image to classify.
+     * @param[in]   runAll     Flag to request classification of all the available images.
+     * @return      true or false based on execution success.
+     **/
+    bool ClassifyImageHandler(ApplicationContext& ctx, uint32_t imgIndex, bool runAll);
+
+} /* namespace app */
+} /* namespace arm */
+
+#endif /* IMG_CLASS_EVT_HANDLER_HPP */
\ No newline at end of file
diff --git a/source/use_case/img_class/src/MainLoop.cc b/source/use_case/img_class/src/MainLoop.cc
new file mode 100644
index 0000000..469907c
--- /dev/null
+++ b/source/use_case/img_class/src/MainLoop.cc
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 2021 Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+#include "hal.h"                    /* Brings in platform definitions. */
+#include "Classifier.hpp"           /* Classifier. */
+#include "InputFiles.hpp"           /* For input images. */
+#include "Labels.hpp"               /* For label strings. */
+#include "MobileNetModel.hpp"       /* Model class for running inference. */
+#include "UseCaseHandler.hpp"       /* Handlers for different user options. */
+#include "UseCaseCommonUtils.hpp"   /* Utils functions. */
+
+using ImgClassClassifier = arm::app::Classifier;
+
+enum opcodes
+{
+    MENU_OPT_RUN_INF_NEXT = 1,       /* Run on next vector. */
+    MENU_OPT_RUN_INF_CHOSEN,         /* Run on a user provided vector index. */
+    MENU_OPT_RUN_INF_ALL,            /* Run inference on all. */
+    MENU_OPT_SHOW_MODEL_INFO,        /* Show model info. */
+    MENU_OPT_LIST_IMAGES             /* List the current baked images. */
+};
+
+static void DisplayMenu()
+{
+    printf("\n\nUser input required\n");
+    printf("Enter option number from:\n\n");
+    printf("  %u. Classify next image\n", MENU_OPT_RUN_INF_NEXT);
+    printf("  %u. Classify image at chosen index\n", MENU_OPT_RUN_INF_CHOSEN);
+    printf("  %u. Run classification on all images\n", MENU_OPT_RUN_INF_ALL);
+    printf("  %u. Show NN model info\n", MENU_OPT_SHOW_MODEL_INFO);
+    printf("  %u. List images\n\n", MENU_OPT_LIST_IMAGES);
+    printf("  Choice: ");
+}
+
+void main_loop(hal_platform& platform)
+{
+    arm::app::MobileNetModel model;  /* Model wrapper object. */
+
+    /* Load the model. */
+    if (!model.Init()) {
+        printf_err("Failed to initialise model\n");
+        return;
+    }
+
+    /* Instantiate application context. */
+    arm::app::ApplicationContext caseContext;
+
+    caseContext.Set<hal_platform&>("platform", platform);
+    caseContext.Set<arm::app::Model&>("model", model);
+    caseContext.Set<uint32_t>("imgIndex", 0);
+
+    ImgClassClassifier classifier;  /* Classifier wrapper object. */
+    caseContext.Set<arm::app::Classifier&>("classifier", classifier);
+
+    std::vector <std::string> labels;
+    GetLabelsVector(labels);
+    caseContext.Set<const std::vector <std::string>&>("labels", labels);
+
+    /* Loop. */
+    bool executionSuccessful = true;
+    constexpr bool bUseMenu = NUMBER_OF_FILES > 1 ? true : false;
+
+    /* Loop. */
+    do {
+        int menuOption = MENU_OPT_RUN_INF_NEXT;
+        if (bUseMenu) {
+            DisplayMenu();
+            menuOption = arm::app::ReadUserInputAsInt(platform);
+            printf("\n");
+        }
+        switch (menuOption) {
+            case MENU_OPT_RUN_INF_NEXT:
+                executionSuccessful = ClassifyImageHandler(caseContext, caseContext.Get<uint32_t>("imgIndex"), false);
+                break;
+            case MENU_OPT_RUN_INF_CHOSEN: {
+                printf("    Enter the image index [0, %d]: ", NUMBER_OF_FILES-1);
+                auto imgIndex = static_cast<uint32_t>(arm::app::ReadUserInputAsInt(platform));
+                executionSuccessful = ClassifyImageHandler(caseContext, imgIndex, false);
+                break;
+            }
+            case MENU_OPT_RUN_INF_ALL:
+                executionSuccessful = ClassifyImageHandler(caseContext, caseContext.Get<uint32_t>("imgIndex"), true);
+                break;
+            case MENU_OPT_SHOW_MODEL_INFO:
+                executionSuccessful = model.ShowModelInfoHandler();
+                break;
+            case MENU_OPT_LIST_IMAGES:
+                executionSuccessful = ListFilesHandler(caseContext);
+                break;
+            default:
+                printf("Incorrect choice, try again.");
+                break;
+        }
+    } while (executionSuccessful && bUseMenu);
+    info("Main loop terminated.\n");
+}
\ No newline at end of file
diff --git a/source/use_case/img_class/src/MobileNetModel.cc b/source/use_case/img_class/src/MobileNetModel.cc
new file mode 100644
index 0000000..eeaa109
--- /dev/null
+++ b/source/use_case/img_class/src/MobileNetModel.cc
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2021 Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+#include "MobileNetModel.hpp"
+
+#include "hal.h"
+
+const tflite::MicroOpResolver& arm::app::MobileNetModel::GetOpResolver()
+{
+    return this->_m_opResolver;
+}
+
+bool arm::app::MobileNetModel::EnlistOperations()
+{
+    this->_m_opResolver.AddDepthwiseConv2D();
+    this->_m_opResolver.AddConv2D();
+    this->_m_opResolver.AddAveragePool2D();
+    this->_m_opResolver.AddAdd();
+    this->_m_opResolver.AddReshape();
+    this->_m_opResolver.AddSoftmax();
+
+#if defined(ARM_NPU)
+    if (kTfLiteOk == this->_m_opResolver.AddEthosU()) {
+        info("Added %s support to op resolver\n",
+            tflite::GetString_ETHOSU());
+    } else {
+        printf_err("Failed to add Arm NPU support to op resolver.");
+        return false;
+    }
+#endif /* ARM_NPU */
+    return true;
+}
+
+extern uint8_t* GetModelPointer();
+const uint8_t* arm::app::MobileNetModel::ModelPointer()
+{
+    return GetModelPointer();
+}
+
+extern size_t GetModelLen();
+size_t arm::app::MobileNetModel::ModelSize()
+{
+    return GetModelLen();
+}
\ No newline at end of file
diff --git a/source/use_case/img_class/src/UseCaseHandler.cc b/source/use_case/img_class/src/UseCaseHandler.cc
new file mode 100644
index 0000000..a412fec
--- /dev/null
+++ b/source/use_case/img_class/src/UseCaseHandler.cc
@@ -0,0 +1,269 @@
+/*
+ * Copyright (c) 2021 Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+#include "UseCaseHandler.hpp"
+
+#include "Classifier.hpp"
+#include "InputFiles.hpp"
+#include "MobileNetModel.hpp"
+#include "UseCaseCommonUtils.hpp"
+#include "hal.h"
+
+using ImgClassClassifier = arm::app::Classifier;
+
+namespace arm {
+namespace app {
+
+    /**
+    * @brief           Helper function to load the current image into the input
+    *                  tensor.
+    * @param[in]       imIdx         Image index (from the pool of images available
+    *                                to the application).
+    * @param[out]      inputTensor   Pointer to the input tensor to be populated.
+    * @return          true if tensor is loaded, false otherwise.
+    **/
+    static bool _LoadImageIntoTensor(uint32_t imIdx, TfLiteTensor* inputTensor);
+
+    /**
+     * @brief           Helper function to increment current image index.
+     * @param[in,out]   ctx   Pointer to the application context object.
+     **/
+    static void _IncrementAppCtxImageIdx(ApplicationContext& ctx);
+
+    /**
+     * @brief           Helper function to set the image index.
+     * @param[in,out]   ctx   Pointer to the application context object.
+     * @param[in]       idx   Value to be set.
+     * @return          true if index is set, false otherwise.
+     **/
+    static bool _SetAppCtxImageIdx(ApplicationContext& ctx, uint32_t idx);
+
+    /**
+     * @brief           Presents inference results using the data presentation
+     *                  object.
+     * @param[in]       platform    Reference to the hal platform object.
+     * @param[in]       results     Vector of classification results to be displayed.
+     * @param[in]       infTimeMs   Inference time in milliseconds, if available
+     *                              otherwise, this can be passed in as 0.
+     * @return          true if successful, false otherwise.
+     **/
+    static bool _PresentInferenceResult(hal_platform& platform,
+                                        const std::vector<ClassificationResult>& results);
+
+    /**
+     * @brief           Helper function to convert a UINT8 image to INT8 format.
+     * @param[in,out]   data            Pointer to the data start.
+     * @param[in]       kMaxImageSize   Total number of pixels in the image.
+     **/
+    static void ConvertImgToInt8(void* data, size_t kMaxImageSize);
+
+    /* Image inference classification handler. */
+    bool ClassifyImageHandler(ApplicationContext& ctx, uint32_t imgIndex, bool runAll)
+    {
+        auto& platform = ctx.Get<hal_platform&>("platform");
+
+        constexpr uint32_t dataPsnImgDownscaleFactor = 2;
+        constexpr uint32_t dataPsnImgStartX = 10;
+        constexpr uint32_t dataPsnImgStartY = 35;
+
+        constexpr uint32_t dataPsnTxtInfStartX = 150;
+        constexpr uint32_t dataPsnTxtInfStartY = 40;
+
+        platform.data_psn->clear(COLOR_BLACK);
+
+        auto& model = ctx.Get<Model&>("model");
+
+        /* If the request has a valid size, set the image index. */
+        if (imgIndex < NUMBER_OF_FILES) {
+            if (!_SetAppCtxImageIdx(ctx, imgIndex)) {
+                return false;
+            }
+        }
+        if (!model.IsInited()) {
+            printf_err("Model is not initialised! Terminating processing.\n");
+            return false;
+        }
+
+        auto curImIdx = ctx.Get<uint32_t>("imgIndex");
+
+        TfLiteTensor* outputTensor = model.GetOutputTensor(0);
+        TfLiteTensor* inputTensor = model.GetInputTensor(0);
+
+        if (!inputTensor->dims) {
+            printf_err("Invalid input tensor dims\n");
+            return false;
+        } else if (inputTensor->dims->size < 3) {
+            printf_err("Input tensor dimension should be >= 3\n");
+            return false;
+        }
+
+        TfLiteIntArray* inputShape = model.GetInputShape(0);
+
+        const uint32_t nCols = inputShape->data[arm::app::MobileNetModel::ms_inputColsIdx];
+        const uint32_t nRows = inputShape->data[arm::app::MobileNetModel::ms_inputRowsIdx];
+        const uint32_t nChannels = inputShape->data[arm::app::MobileNetModel::ms_inputChannelsIdx];
+
+        std::vector<ClassificationResult> results;
+
+        do {
+            /* Strings for presentation/logging. */
+            std::string str_inf{"Running inference... "};
+
+            /* Copy over the data. */
+            _LoadImageIntoTensor(ctx.Get<uint32_t>("imgIndex"), inputTensor);
+
+            /* Display this image on the LCD. */
+            platform.data_psn->present_data_image(
+                (uint8_t*) inputTensor->data.data,
+                nCols, nRows, nChannels,
+                dataPsnImgStartX, dataPsnImgStartY, dataPsnImgDownscaleFactor);
+
+            /* If the data is signed. */
+            if (model.IsDataSigned()) {
+                ConvertImgToInt8(inputTensor->data.data, inputTensor->bytes);
+            }
+
+            /* Display message on the LCD - inference running. */
+            platform.data_psn->present_data_text(str_inf.c_str(), str_inf.size(),
+                                    dataPsnTxtInfStartX, dataPsnTxtInfStartY, 0);
+
+            /* Run inference over this image. */
+            info("Running inference on image %u => %s\n", ctx.Get<uint32_t>("imgIndex"),
+                get_filename(ctx.Get<uint32_t>("imgIndex")));
+
+            RunInference(platform, model);
+
+            /* Erase. */
+            str_inf = std::string(str_inf.size(), ' ');
+            platform.data_psn->present_data_text(str_inf.c_str(), str_inf.size(),
+                                    dataPsnTxtInfStartX, dataPsnTxtInfStartY, 0);
+
+            auto& classifier = ctx.Get<ImgClassClassifier&>("classifier");
+            classifier.GetClassificationResults(outputTensor, results,
+                                                ctx.Get<std::vector <std::string>&>("labels"),
+                                                5);
+
+            /* Add results to context for access outside handler. */
+            ctx.Set<std::vector<ClassificationResult>>("results", results);
+
+#if VERIFY_TEST_OUTPUT
+            arm::app::DumpTensor(outputTensor);
+#endif /* VERIFY_TEST_OUTPUT */
+
+            if (!_PresentInferenceResult(platform, results)) {
+                return false;
+            }
+
+            _IncrementAppCtxImageIdx(ctx);
+
+        } while (runAll && ctx.Get<uint32_t>("imgIndex") != curImIdx);
+
+        return true;
+    }
+
+    static bool _LoadImageIntoTensor(const uint32_t imIdx, TfLiteTensor* inputTensor)
+    {
+        const size_t copySz = inputTensor->bytes < IMAGE_DATA_SIZE ?
+                              inputTensor->bytes : IMAGE_DATA_SIZE;
+        const uint8_t* imgSrc = get_img_array(imIdx);
+        if (nullptr == imgSrc) {
+            printf_err("Failed to get image index %u (max: %u)\n", imIdx,
+                       NUMBER_OF_FILES - 1);
+            return false;
+        }
+
+        memcpy(inputTensor->data.data, imgSrc, copySz);
+        debug("Image %u loaded\n", imIdx);
+        return true;
+    }
+
+    static void _IncrementAppCtxImageIdx(ApplicationContext& ctx)
+    {
+        auto curImIdx = ctx.Get<uint32_t>("imgIndex");
+
+        if (curImIdx + 1 >= NUMBER_OF_FILES) {
+            ctx.Set<uint32_t>("imgIndex", 0);
+            return;
+        }
+        ++curImIdx;
+        ctx.Set<uint32_t>("imgIndex", curImIdx);
+    }
+
+    static bool _SetAppCtxImageIdx(ApplicationContext& ctx, const uint32_t idx)
+    {
+        if (idx >= NUMBER_OF_FILES) {
+            printf_err("Invalid idx %u (expected less than %u)\n",
+                       idx, NUMBER_OF_FILES);
+            return false;
+        }
+        ctx.Set<uint32_t>("imgIndex", idx);
+        return true;
+    }
+
+    static bool _PresentInferenceResult(hal_platform& platform,
+                                        const std::vector<ClassificationResult>& results)
+    {
+        constexpr uint32_t dataPsnTxtStartX1 = 150;
+        constexpr uint32_t dataPsnTxtStartY1 = 30;
+
+        constexpr uint32_t dataPsnTxtStartX2 = 10;
+        constexpr uint32_t dataPsnTxtStartY2 = 150;
+
+        constexpr uint32_t dataPsnTxtYIncr = 16;  /* Row index increment. */
+
+        platform.data_psn->set_text_color(COLOR_GREEN);
+
+        /* Display each result. */
+        uint32_t rowIdx1 = dataPsnTxtStartY1 + 2 * dataPsnTxtYIncr;
+        uint32_t rowIdx2 = dataPsnTxtStartY2;
+
+        for (uint32_t i = 0; i < results.size(); ++i) {
+            std::string resultStr =
+                std::to_string(i + 1) + ") " +
+                std::to_string(results[i].m_labelIdx) +
+                " (" + std::to_string(results[i].m_normalisedVal) + ")";
+
+            platform.data_psn->present_data_text(
+                                        resultStr.c_str(), resultStr.size(),
+                                        dataPsnTxtStartX1, rowIdx1, 0);
+            rowIdx1 += dataPsnTxtYIncr;
+
+            resultStr = std::to_string(i + 1) + ") " + results[i].m_label;
+            platform.data_psn->present_data_text(
+                                        resultStr.c_str(), resultStr.size(),
+                                        dataPsnTxtStartX2, rowIdx2, 0);
+            rowIdx2 += dataPsnTxtYIncr;
+
+            info("%u) %u (%f) -> %s\n", i, results[i].m_labelIdx,
+                 results[i].m_normalisedVal, results[i].m_label.c_str());
+        }
+
+        return true;
+    }
+
+    static void ConvertImgToInt8(void* data, const size_t kMaxImageSize)
+    {
+        auto* tmp_req_data = (uint8_t*) data;
+        auto* tmp_signed_req_data = (int8_t*) data;
+
+        for (size_t i = 0; i < kMaxImageSize; i++) {
+            tmp_signed_req_data[i] = (int8_t) (
+                (int32_t) (tmp_req_data[i]) - 128);
+        }
+    }
+
+} /* namespace app */
+} /* namespace arm */
diff --git a/source/use_case/img_class/usecase.cmake b/source/use_case/img_class/usecase.cmake
new file mode 100644
index 0000000..440eabe
--- /dev/null
+++ b/source/use_case/img_class/usecase.cmake
@@ -0,0 +1,125 @@
+#----------------------------------------------------------------------------
+#  Copyright (c) 2021 Arm Limited. All rights reserved.
+#  SPDX-License-Identifier: Apache-2.0
+#
+#  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.
+#----------------------------------------------------------------------------
+
+# If the path to a directory or source file has been defined,
+# get the type here (FILEPATH or PATH):
+if (DEFINED ${use_case}_FILE_PATH)
+    get_path_type(${${use_case}_FILE_PATH} PATH_TYPE)
+    # Set the default type if path is not a dir or file path (or undefined)
+    if (NOT ${PATH_TYPE} STREQUAL PATH AND NOT ${PATH_TYPE} STREQUAL FILEPATH)
+        message(FATAL_ERROR "Invalid ${use_case}_FILE_PATH. It should be a dir or file path.")
+    endif()
+else()
+    # Default is a directory path
+    set(PATH_TYPE PATH)
+endif()
+
+message(STATUS "${use_case}_FILE_PATH is of type: ${PATH_TYPE}")
+
+USER_OPTION(${use_case}_FILE_PATH "Directory with custom image files to use, or path to a single image, in the evaluation application"
+    ${CMAKE_CURRENT_SOURCE_DIR}/resources/${use_case}/samples/
+    ${PATH_TYPE})
+
+USER_OPTION(${use_case}_IMAGE_SIZE "Square image size in pixels. Images will be resized to this size."
+    224
+    STRING)
+
+USER_OPTION(${use_case}_LABELS_TXT_FILE "Labels' txt file for the chosen model"
+    ${CMAKE_CURRENT_SOURCE_DIR}/resources/${use_case}/labels/labels_mobilenet_v2_1.0_224.txt
+    FILEPATH)
+
+# Generate input files
+generate_images_code("${${use_case}_FILE_PATH}"
+                     ${SRC_GEN_DIR}
+                     ${INC_GEN_DIR}
+                     "${${use_case}_IMAGE_SIZE}")
+
+# Generate labels file
+set(${use_case}_LABELS_CPP_FILE Labels)
+generate_labels_code(
+    INPUT           "${${use_case}_LABELS_TXT_FILE}"
+    DESTINATION_SRC ${SRC_GEN_DIR}
+    DESTINATION_HDR ${INC_GEN_DIR}
+    OUTPUT_FILENAME "${${use_case}_LABELS_CPP_FILE}"
+)
+
+USER_OPTION(${use_case}_ACTIVATION_BUF_SZ "Activation buffer size for the chosen model"
+    0x00200000
+    STRING)
+
+# If there is no tflite file pointed to
+if (NOT DEFINED ${use_case}_MODEL_TFLITE_PATH)
+
+    set(MODEL_RESOURCES_DIR     ${DOWNLOAD_DEP_DIR}/${use_case})
+    file(MAKE_DIRECTORY         ${MODEL_RESOURCES_DIR})
+    set(MODEL_FILENAME          mobilenet_v2_1.0_224_quantized_1_default_1.tflite)
+    set(DEFAULT_MODEL_PATH      ${MODEL_RESOURCES_DIR}/${MODEL_FILENAME})
+
+    # Download the default model
+    set(ZOO_COMMON_SUBPATH      "models/image_classification/mobilenet_v2_1.0_224/tflite_uint8")
+    set(ZOO_MODEL_SUBPATH       "${ZOO_COMMON_SUBPATH}/${MODEL_FILENAME}")
+
+    download_file_from_modelzoo(${ZOO_MODEL_SUBPATH}    ${DEFAULT_MODEL_PATH})
+
+    if (ETHOS_U55_ENABLED)
+        message(STATUS
+            "Ethos-U55 is enabled, but the model downloaded is not optimized by vela. "
+            "To use Ethos-U55 acceleration, optimise the downloaded model and pass it "
+            "as ${use_case}_MODEL_TFLITE_PATH to the CMake configuration.")
+    endif()
+
+    # If the target platform is native
+    if (${TARGET_PLATFORM} STREQUAL native)
+
+        # Download test vectors
+        set(ZOO_TEST_IFM_SUBPATH    "${ZOO_COMMON_SUBPATH}/testing_input/input/0.npy")
+        set(ZOO_TEST_OFM_SUBPATH    "${ZOO_COMMON_SUBPATH}/testing_output/output/0.npy")
+
+        set(${use_case}_TEST_IFM    ${MODEL_RESOURCES_DIR}/ifm0.npy CACHE FILEPATH
+                                    "Input test vector for ${use_case}")
+        set(${use_case}_TEST_OFM    ${MODEL_RESOURCES_DIR}/ofm0.npy CACHE FILEPATH
+                                    "Input test vector for ${use_case}")
+
+        download_file_from_modelzoo(${ZOO_TEST_IFM_SUBPATH} ${${use_case}_TEST_IFM})
+        download_file_from_modelzoo(${ZOO_TEST_OFM_SUBPATH} ${${use_case}_TEST_OFM})
+
+        set(TEST_SRC_GEN_DIR ${CMAKE_BINARY_DIR}/generated/${use_case}/tests/src)
+        set(TEST_INC_GEN_DIR ${CMAKE_BINARY_DIR}/generated/${use_case}/tests/include)
+        file(MAKE_DIRECTORY ${TEST_SRC_GEN_DIR} ${TEST_INC_GEN_DIR})
+
+        # Generate test data files to be included in x86 tests
+        generate_test_data_code(
+                            INPUT_DIR "${DOWNLOAD_DEP_DIR}/${use_case}"
+                            DESTINATION_SRC ${TEST_SRC_GEN_DIR}
+                            DESTINATION_HDR ${TEST_INC_GEN_DIR}
+                            USECASE  "${use_case}")
+    endif()
+
+else()
+    set(DEFAULT_MODEL_PATH  "N/A")
+endif()
+
+USER_OPTION(${use_case}_MODEL_TFLITE_PATH "NN models file to be used in the evaluation application. Model files must be in tflite format."
+    ${DEFAULT_MODEL_PATH}
+    FILEPATH
+    )
+
+# Generate model file
+generate_tflite_code(
+    MODEL_PATH ${${use_case}_MODEL_TFLITE_PATH}
+    DESTINATION ${SRC_GEN_DIR}
+    )