diff options
Diffstat (limited to 'examples/multimedia/audiooutput/audiooutput.cpp')
| -rw-r--r-- | examples/multimedia/audiooutput/audiooutput.cpp | 92 |
1 files changed, 23 insertions, 69 deletions
diff --git a/examples/multimedia/audiooutput/audiooutput.cpp b/examples/multimedia/audiooutput/audiooutput.cpp index 381ccca1d..809b79293 100644 --- a/examples/multimedia/audiooutput/audiooutput.cpp +++ b/examples/multimedia/audiooutput/audiooutput.cpp @@ -1,52 +1,5 @@ -/**************************************************************************** -** -** 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 #include "audiooutput.h" @@ -54,8 +7,8 @@ #include <QAudioSink> #include <QDebug> #include <QVBoxLayout> -#include <qmath.h> -#include <qendian.h> +#include <QtEndian> +#include <QtMath> Generator::Generator(const QAudioFormat &format, qint64 durationUs, int sampleRate) { @@ -88,9 +41,10 @@ void Generator::generateData(const QAudioFormat &format, qint64 durationUs, int while (length) { // Produces value (-1..1) - const qreal x = qSin(2 * M_PI * sampleRate * qreal(sampleIndex++ % format.sampleRate()) / format.sampleRate()); - for (int i=0; i<format.channelCount(); ++i) { - switch(format.sampleFormat()) { + const qreal x = qSin(2 * M_PI * sampleRate * qreal(sampleIndex++ % format.sampleRate()) + / format.sampleRate()); + for (int i = 0; i < format.channelCount(); ++i) { + switch (format.sampleFormat()) { case QAudioFormat::UInt8: *reinterpret_cast<quint8 *>(ptr) = static_cast<quint8>((1.0 + x) / 2 * 255); break; @@ -98,7 +52,8 @@ void Generator::generateData(const QAudioFormat &format, qint64 durationUs, int *reinterpret_cast<qint16 *>(ptr) = static_cast<qint16>(x * 32767); break; case QAudioFormat::Int32: - *reinterpret_cast<qint32 *>(ptr) = static_cast<qint32>(x * std::numeric_limits<qint32>::max()); + *reinterpret_cast<qint32 *>(ptr) = + static_cast<qint32>(x * std::numeric_limits<qint32>::max()); break; case QAudioFormat::Float: *reinterpret_cast<float *>(ptr) = x; @@ -140,9 +95,7 @@ qint64 Generator::bytesAvailable() const return m_buffer.size() + QIODevice::bytesAvailable(); } -AudioTest::AudioTest() - : m_devices(new QMediaDevices(this)), - m_pushTimer(new QTimer(this)) +AudioTest::AudioTest() : m_devices(new QMediaDevices(this)), m_pushTimer(new QTimer(this)) { initializeWindow(); initializeAudio(m_devices->defaultAudioOutput()); @@ -161,11 +114,12 @@ void AudioTest::initializeWindow() m_deviceBox = new QComboBox(this); const QAudioDevice &defaultDeviceInfo = m_devices->defaultAudioOutput(); m_deviceBox->addItem(defaultDeviceInfo.description(), QVariant::fromValue(defaultDeviceInfo)); - for (auto &deviceInfo: m_devices->audioOutputs()) { + for (auto &deviceInfo : m_devices->audioOutputs()) { if (deviceInfo != defaultDeviceInfo) m_deviceBox->addItem(deviceInfo.description(), QVariant::fromValue(deviceInfo)); } - connect(m_deviceBox, QOverload<int>::of(&QComboBox::activated), this, &AudioTest::deviceChanged); + connect(m_deviceBox, QOverload<int>::of(&QComboBox::activated), this, + &AudioTest::deviceChanged); connect(m_devices, &QMediaDevices::audioOutputsChanged, this, &AudioTest::updateAudioDevices); layout->addWidget(m_deviceBox); @@ -205,8 +159,7 @@ void AudioTest::initializeAudio(const QAudioDevice &deviceInfo) m_audioOutput.reset(new QAudioSink(deviceInfo, format)); m_generator->start(); - qreal initialVolume = QAudio::convertVolume(m_audioOutput->volume(), - QAudio::LinearVolumeScale, + qreal initialVolume = QAudio::convertVolume(m_audioOutput->volume(), QAudio::LinearVolumeScale, QAudio::LogarithmicVolumeScale); m_volumeSlider->setValue(qRound(initialVolume * 100)); toggleMode(); @@ -222,8 +175,7 @@ void AudioTest::deviceChanged(int index) void AudioTest::volumeChanged(int value) { - qreal linearVolume = QAudio::convertVolume(value / qreal(100), - QAudio::LogarithmicVolumeScale, + qreal linearVolume = QAudio::convertVolume(value / qreal(100), QAudio::LogarithmicVolumeScale, QAudio::LinearVolumeScale); m_audioOutput->setVolume(linearVolume); @@ -233,7 +185,7 @@ void AudioTest::updateAudioDevices() { m_deviceBox->clear(); const QList<QAudioDevice> devices = m_devices->audioOutputs(); - for (const QAudioDevice &deviceInfo: devices) + for (const QAudioDevice &deviceInfo : devices) m_deviceBox->addItem(deviceInfo.description(), QVariant::fromValue(deviceInfo)); } @@ -244,11 +196,11 @@ void AudioTest::toggleMode() toggleSuspendResume(); if (m_pullMode) { - //switch to pull mode (QAudioSink pulls from Generator as needed) + // switch to pull mode (QAudioSink pulls from Generator as needed) m_modeButton->setText(tr("Enable push mode")); m_audioOutput->start(m_generator.data()); } else { - //switch to push mode (periodically push to QAudioSink using a timer) + // switch to push mode (periodically push to QAudioSink using a timer) m_modeButton->setText(tr("Enable pull mode")); auto io = m_audioOutput->start(); m_pushTimer->disconnect(); @@ -261,7 +213,7 @@ void AudioTest::toggleMode() QByteArray buffer(len, 0); len = m_generator->read(buffer.data(), len); if (len) - io->write(buffer.data(), len); + io->write(buffer.data(), len); }); m_pushTimer->start(10); @@ -272,7 +224,8 @@ void AudioTest::toggleMode() void AudioTest::toggleSuspendResume() { - if (m_audioOutput->state() == QAudio::SuspendedState || m_audioOutput->state() == QAudio::StoppedState) { + if (m_audioOutput->state() == QAudio::SuspendedState + || m_audioOutput->state() == QAudio::StoppedState) { m_audioOutput->resume(); m_suspendResumeButton->setText(tr("Suspend playback")); } else if (m_audioOutput->state() == QAudio::ActiveState) { @@ -283,3 +236,4 @@ void AudioTest::toggleSuspendResume() } } +#include "moc_audiooutput.cpp" |