MLECO-1252 ASR sample application using the public ArmNN C++ API.
Change-Id: I98cd505b8772a8c8fa88308121bc94135bb45068
Signed-off-by: Éanna Ó Catháin <eanna.ocathain@arm.com>
diff --git a/samples/SpeechRecognition/include/AudioCapture.hpp b/samples/SpeechRecognition/include/AudioCapture.hpp
new file mode 100644
index 0000000..90c2ecc
--- /dev/null
+++ b/samples/SpeechRecognition/include/AudioCapture.hpp
@@ -0,0 +1,62 @@
+//
+// Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include <string>
+#include <iostream>
+
+#include <math.h>
+
+#include <vector>
+
+#include <exception>
+
+#include "SlidingWindow.hpp"
+
+namespace asr
+{
+
+/**
+* @brief Class used to capture the audio data loaded from file, and to provide a method of
+ * extracting correctly positioned and appropriately sized audio windows
+*
+*/
+ class AudioCapture
+ {
+ public:
+
+ SlidingWindow<const float> m_window;
+ int lastReadIdx= 0;
+
+ /**
+ * @brief Default constructor
+ */
+ AudioCapture()
+ {};
+
+ /**
+ * @brief Function to load the audio data captured from the
+ * input file to memory.
+ */
+ std::vector<float> LoadAudioFile(std::string filePath);
+
+ /**
+ * @brief Function to initialize the sliding window. This will set its position in memory, its
+ * window size and its stride.
+ */
+ void InitSlidingWindow(float* data, size_t dataSize, int minSamples, size_t stride);
+
+ /**
+ * Checks whether there is another block of audio in memory to read
+ */
+ bool HasNext();
+
+ /**
+ * Retrieves the next block of audio if its available
+ */
+ std::vector<float> Next();
+ };
+} // namespace asr
\ No newline at end of file