MLECO-3183: Refactoring application sources

Platform agnostic application sources are moved into application
api module with their own independent CMake projects.

Changes for MLECO-3080 also included - they create CMake projects
individial API's (again, platform agnostic) that dependent on the
common logic. The API for KWS_API "joint" API has been removed and
now the use case relies on individual KWS, and ASR API libraries.

Change-Id: I1f7748dc767abb3904634a04e0991b74ac7b756d
Signed-off-by: Kshitij Sisodia <kshitij.sisodia@arm.com>

1 files changed, 60 insertions, 0 deletions

diff --git a/source/application/api/use_case/object_detection/include/DetectorPreProcessing.hpp b/source/application/api/use_case/object_detection/include/DetectorPreProcessing.hpp
new file mode 100644
index 0000000..4936048
--- /dev/null
+++ b/source/application/api/use_case/object_detection/include/DetectorPreProcessing.hpp
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2022 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 DETECTOR_PRE_PROCESSING_HPP
+#define DETECTOR_PRE_PROCESSING_HPP
+
+#include "BaseProcessing.hpp"
+#include "Classifier.hpp"
+
+namespace arm {
+namespace app {
+
+    /**
+     * @brief   Pre-processing class for Object detection use case.
+     *          Implements methods declared by BasePreProcess and anything else needed
+     *          to populate input tensors ready for inference.
+     */
+    class DetectorPreProcess : public BasePreProcess {
+
+    public:
+        /**
+         * @brief       Constructor
+         * @param[in]   inputTensor     Pointer to the TFLite Micro input Tensor.
+         * @param[in]   rgb2Gray        Convert image from 3 channel RGB to 1 channel grayscale.
+         * @param[in]   convertToInt8   Convert the image from uint8 to int8 range.
+         **/
+        explicit DetectorPreProcess(TfLiteTensor* inputTensor, bool rgb2Gray, bool convertToInt8);
+
+        /**
+         * @brief       Should perform pre-processing of 'raw' input image data and load it into
+         *              TFLite Micro input tensor ready for inference
+         * @param[in]   input      Pointer to the data that pre-processing will work on.
+         * @param[in]   inputSize  Size of the input data.
+         * @return      true if successful, false otherwise.
+         **/
+        bool DoPreProcess(const void* input, size_t inputSize) override;
+
+    private:
+        TfLiteTensor* m_inputTensor;
+        bool m_rgb2Gray;
+        bool m_convertToInt8;
+    };
+
+} /* namespace app */
+} /* namespace arm */
+
+#endif /* DETECTOR_PRE_PROCESSING_HPP */
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