1 files changed, 93 insertions, 0 deletions
diff --git a/tests/manual/spectrum/spectrumapp/utils.h b/tests/manual/spectrum/spectrumapp/utils.h
new file mode 100644
index 00000000..8c6ee151
--- /dev/null
+++ b/tests/manual/spectrum/spectrumapp/utils.h
@@ -0,0 +1,93 @@
+/******************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Data Visualization module.
+**
+** $QT_BEGIN_LICENSE:COMM$
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** $QT_END_LICENSE$
+**
+******************************************************************************/
+
+#ifndef UTILS_H
+#define UTILS_H
+
+#include <QtCore/qglobal.h>
+#include <QDebug>
+
+QT_FORWARD_DECLARE_CLASS(QAudioFormat)
+
+//-----------------------------------------------------------------------------
+// Miscellaneous utility functions
+//-----------------------------------------------------------------------------
+
+qint64 audioDuration(const QAudioFormat &format, qint64 bytes);
+qint64 audioLength(const QAudioFormat &format, qint64 microSeconds);
+
+QString formatToString(const QAudioFormat &format);
+
+qreal nyquistFrequency(const QAudioFormat &format);
+
+// Scale PCM value to [-1.0, 1.0]
+qreal pcmToReal(qint16 pcm);
+
+// Scale real value in [-1.0, 1.0] to PCM
+qint16 realToPcm(qreal real);
+
+// Check whether the audio format is PCM
+bool isPCM(const QAudioFormat &format);
+
+// Check whether the audio format is signed, little-endian, 16-bit PCM
+bool isPCMS16LE(const QAudioFormat &format);
+
+// Compile-time calculation of powers of two
+
+template<int N> class PowerOfTwo
+{ public: static const int Result = PowerOfTwo<N-1>::Result * 2; };
+
+template<> class PowerOfTwo<0>
+{ public: static const int Result = 1; };
+
+
+//-----------------------------------------------------------------------------
+// Debug output
+//-----------------------------------------------------------------------------
+
+class NullDebug
+{
+public:
+    template <typename T>
+    NullDebug& operator<<(const T&) { return *this; }
+};
+
+inline NullDebug nullDebug() { return NullDebug(); }
+
+#ifdef LOG_ENGINE
+#   define ENGINE_DEBUG qDebug()
+#else
+#   define ENGINE_DEBUG nullDebug()
+#endif
+
+#ifdef LOG_SPECTRUMANALYSER
+#   define SPECTRUMANALYSER_DEBUG qDebug()
+#else
+#   define SPECTRUMANALYSER_DEBUG nullDebug()
+#endif
+
+#ifdef LOG_WAVEFORM
+#   define WAVEFORM_DEBUG qDebug()
+#else
+#   define WAVEFORM_DEBUG nullDebug()
+#endif
+
+#endif // UTILS_H