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Diffstat (limited to 'examples/multimedia/spectrum/app/utils.h')
| -rw-r--r-- | examples/multimedia/spectrum/app/utils.h | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/examples/multimedia/spectrum/app/utils.h b/examples/multimedia/spectrum/app/utils.h deleted file mode 100644 index cd6357182..000000000 --- a/examples/multimedia/spectrum/app/utils.h +++ /dev/null @@ -1,122 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2017 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#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 |