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/DataStructures.hpp b/samples/SpeechRecognition/include/DataStructures.hpp
new file mode 100644
index 0000000..9922265
--- /dev/null
+++ b/samples/SpeechRecognition/include/DataStructures.hpp
@@ -0,0 +1,102 @@
+//
+// Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#pragma once
+
+#include <stdio.h>
+#include <iterator>
+
+/**
+ * Class Array2d is a data structure that represents a two dimensional array.
+ * The data is allocated in contiguous memory, arranged row-wise
+ * and individual elements can be accessed with the () operator.
+ * For example a two dimensional array D of size (M, N) can be accessed:
+ *
+ * _|<------------- col size = N -------->|
+ * | D(r=0, c=0) D(r=0, c=1)... D(r=0, c=N)
+ * | D(r=1, c=0) D(r=1, c=1)... D(r=1, c=N)
+ * | ...
+ * row size = M ...
+ * | ...
+ * _ D(r=M, c=0) D(r=M, c=1)... D(r=M, c=N)
+ *
+ */
+template<typename T>
+class Array2d
+{
+private:
+ size_t m_rows;
+ size_t m_cols;
+ T* m_data;
+
+public:
+ /**
+ * Creates the array2d with the given sizes.
+ *
+ * @param rows number of rows.
+ * @param cols number of columns.
+ */
+ Array2d(unsigned rows, unsigned cols)
+ {
+ if (rows == 0 || cols == 0) {
+ printf("Array2d constructor has 0 size.\n");
+ m_data = nullptr;
+ return;
+ }
+ m_rows = rows;
+ m_cols = cols;
+ m_data = new T[rows * cols];
+ }
+
+ ~Array2d()
+ {
+ delete[] m_data;
+ }
+
+ T& operator() (unsigned int row, unsigned int col)
+ {
+ return m_data[m_cols * row + col];
+ }
+
+ T operator() (unsigned int row, unsigned int col) const
+ {
+ return m_data[m_cols * row + col];
+ }
+
+ /**
+ * Gets rows number of the current array2d.
+ * @return number of rows.
+ */
+ size_t size(size_t dim)
+ {
+ switch (dim)
+ {
+ case 0:
+ return m_rows;
+ case 1:
+ return m_cols;
+ default:
+ return 0;
+ }
+ }
+
+ /**
+ * Gets the array2d total size.
+ */
+ size_t totalSize()
+ {
+ return m_rows * m_cols;
+ }
+
+ /**
+ * array2d iterator.
+ */
+ using iterator=T*;
+ using const_iterator=T const*;
+
+ iterator begin() { return m_data; }
+ iterator end() { return m_data + totalSize(); }
+ const_iterator begin() const { return m_data; }
+ const_iterator end() const { return m_data + totalSize(); };
+};