diff options
Diffstat (limited to 'examples/multimedia/spectrum/spectrum.h')
| -rw-r--r-- | examples/multimedia/spectrum/spectrum.h | 102 |
1 files changed, 26 insertions, 76 deletions
diff --git a/examples/multimedia/spectrum/spectrum.h b/examples/multimedia/spectrum/spectrum.h index 687ae1e33..e416e82bd 100644 --- a/examples/multimedia/spectrum/spectrum.h +++ b/examples/multimedia/spectrum/spectrum.h @@ -1,75 +1,29 @@ -/**************************************************************************** -** -** 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2017 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause #ifndef SPECTRUM_H #define SPECTRUM_H -#include <qglobal.h> -#include "utils.h" #include "fftreal_wrapper.h" // For FFTLengthPowerOfTwo +#include "utils.h" + +#include <QtGlobal> //----------------------------------------------------------------------------- // Constants //----------------------------------------------------------------------------- // Number of audio samples used to calculate the frequency spectrum -const int SpectrumLengthSamples = PowerOfTwo<FFTLengthPowerOfTwo>::Result; +const int SpectrumLengthSamples = PowerOfTwo<FFTLengthPowerOfTwo>::Result; // Number of bands in the frequency spectrum -const int SpectrumNumBands = 10; +const int SpectrumNumBands = 10; // Lower bound of first band in the spectrum -const qreal SpectrumLowFreq = 0.0; // Hz +const qreal SpectrumLowFreq = 0.0; // Hz // Upper band of last band in the spectrum -const qreal SpectrumHighFreq = 1000.0; // Hz +const qreal SpectrumHighFreq = 1000.0; // Hz // Waveform window size in microseconds const qint64 WaveformWindowDuration = 500 * 1000; @@ -79,63 +33,59 @@ const qint64 WaveformWindowDuration = 500 * 1000; // available until some time after QAudio*::start() has been called, and we // need this value in order to initialize the waveform display. // We therefore just choose a sensible value. -const int WaveformTileLength = 4096; +const int WaveformTileLength = 4096; // Fudge factor used to calculate the spectrum bar heights const qreal SpectrumAnalyserMultiplier = 0.15; // Disable message timeout -const int NullMessageTimeout = -1; - +const int NullMessageTimeout = -1; //----------------------------------------------------------------------------- // Types and data structures //----------------------------------------------------------------------------- -enum WindowFunction { - NoWindow, - HannWindow -}; +enum WindowFunction { NoWindow, HannWindow }; Q_DECLARE_METATYPE(WindowFunction) const WindowFunction DefaultWindowFunction = HannWindow; struct Tone { - Tone(qreal freq = 0.0, qreal amp = 0.0) - : frequency(freq), amplitude(amp) - { } + Tone(qreal freq = 0.0, qreal amp = 0.0) : frequency(freq), amplitude(amp) { } // Start and end frequencies for swept tone generation - qreal frequency; + qreal frequency; // Amplitude in range [0.0, 1.0] - qreal amplitude; + qreal amplitude; }; struct SweptTone { SweptTone(qreal start = 0.0, qreal end = 0.0, qreal amp = 0.0) - : startFreq(start), endFreq(end), amplitude(amp) - { Q_ASSERT(end >= start); } + : startFreq(start), endFreq(end), amplitude(amp) + { + Q_ASSERT(end >= start); + } SweptTone(const Tone &tone) - : startFreq(tone.frequency), endFreq(tone.frequency), amplitude(tone.amplitude) - { } + : startFreq(tone.frequency), endFreq(tone.frequency), amplitude(tone.amplitude) + { + } // Start and end frequencies for swept tone generation - qreal startFreq; - qreal endFreq; + qreal startFreq; + qreal endFreq; // Amplitude in range [0.0, 1.0] - qreal amplitude; + qreal amplitude; }; // Handle some dependencies between macros defined in the .pro file #ifdef DISABLE_WAVEFORM -#undef SUPERIMPOSE_PROGRESS_ON_WAVEFORM +# undef SUPERIMPOSE_PROGRESS_ON_WAVEFORM #endif #endif // SPECTRUM_H - |