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Diffstat (limited to 'doc/src/snippets/multimedia-snippets/audio.cpp')
| -rw-r--r-- | doc/src/snippets/multimedia-snippets/audio.cpp | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/doc/src/snippets/multimedia-snippets/audio.cpp b/doc/src/snippets/multimedia-snippets/audio.cpp deleted file mode 100644 index d34bb96..0000000 --- a/doc/src/snippets/multimedia-snippets/audio.cpp +++ /dev/null @@ -1,210 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the Qt Mobility Components. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -/* Audio related snippets */ -#include <QFile> -#include <QTimer> -#include <QDebug> - -#include "qaudiodeviceinfo.h" -#include "qaudioinput.h" -#include "qaudiooutput.h" - -class AudioInputExample : public QObject { - Q_OBJECT -public: - void setup(); - - -public Q_SLOTS: - void stopRecording(); - void stateChanged(QAudio::State newState); - -private: - //! [Audio input class members] - QFile destinationFile; // class member. - QAudioInput* audio; // class member. - //! [Audio input class members] -}; - - -void AudioInputExample::setup() -//! [Audio input setup] -{ - destinationFile.setFileName("/tmp/test.raw"); - destinationFile.open( QIODevice::WriteOnly | QIODevice::Truncate ); - - QAudioFormat format; - // set up the format you want, eg. - format.setFrequency(8000); - format.setChannels(1); - format.setSampleSize(8); - format.setCodec("audio/pcm"); - format.setByteOrder(QAudioFormat::LittleEndian); - format.setSampleType(QAudioFormat::UnSignedInt); - - QAudioDeviceInfo info = QAudioDeviceInfo::defaultInputDevice(); - if (!info.isFormatSupported(format)) { - qWarning()<<"default format not supported try to use nearest"; - format = info.nearestFormat(format); - } - - audio = new QAudioInput(format, this); - connect(audio, SIGNAL(stateChanged(QAudio::State)), this, SLOT(stateChanged(QAudio::State))); - - QTimer::singleShot(3000, this, SLOT(stopRecording())); - audio->start(&destinationFile); - // Records audio for 3000ms -} -//! [Audio input setup] - -//! [Audio input stop recording] -void AudioInputExample::stopRecording() -{ - audio->stop(); - destinationFile.close(); - delete audio; -} -//! [Audio input stop recording] - -//! [Audio input state changed] -void AudioInputExample::stateChanged(QAudio::State newState) -{ - switch (newState) { - case QAudio::StoppedState: - if (audio->error() != QAudio::NoError) { - // Error handling - } else { - // Finished recording - } - break; - - // ... - } -} -//! [Audio input state changed] - - -class AudioOutputExample : public QObject { - Q_OBJECT -public: - void setup(); - -public Q_SLOTS: - void stateChanged(QAudio::State newState); - -private: - //! [Audio output class members] - QFile sourceFile; // class member. - QAudioOutput* audio; // class member. - //! [Audio output class members] -}; - - -void AudioOutputExample::setup() -//! [Audio output setup] -{ - sourceFile.setFileName("/tmp/test.raw"); - sourceFile.open(QIODevice::ReadOnly); - - QAudioFormat format; - // Set up the format, eg. - format.setFrequency(8000); - format.setChannels(1); - format.setSampleSize(8); - format.setCodec("audio/pcm"); - format.setByteOrder(QAudioFormat::LittleEndian); - format.setSampleType(QAudioFormat::UnSignedInt); - - QAudioDeviceInfo info(QAudioDeviceInfo::defaultOutputDevice()); - if (!info.isFormatSupported(format)) { - qWarning() << "raw audio format not supported by backend, cannot play audio."; - return; - } - - audio = new QAudioOutput(format, this); - connect(audio, SIGNAL(stateChanged(QAudio::State)), this, SLOT(stateChanged(QAudio::State))); - audio->start(&sourceFile); -} -//! [Audio output setup] - -//! [Audio output state changed] -void AudioOutputExample::stateChanged(QAudio::State newState) -{ - switch (newState) { - case QAudio::IdleState: - // Finished playing (no more data) - audio->stop(); - sourceFile.close(); - delete audio; - break; - - case QAudio::StoppedState: - // Stopped for other reasons - if (audio->error() != QAudio::NoError) { - // Error handling - } - break; - - // ... - } -} -//! [Audio output state changed] - -void AudioDeviceInfo() -{ - //! [Setting audio format] - QAudioFormat format; - format.setFrequency(44100); - // ... other format parameters - format.setSampleType(QAudioFormat::SignedInt); - - QAudioDeviceInfo info(QAudioDeviceInfo::defaultOutputDevice()); - - if (!info.isFormatSupported(format)) - format = info.nearestFormat(format); - //! [Setting audio format] - - //! [Dumping audio formats] - foreach (const QAudioDeviceInfo &deviceInfo, QAudioDeviceInfo::availableDevices(QAudio::AudioOutput)) - qDebug() << "Device name: " << deviceInfo.deviceName(); - //! [Dumping audio formats] -} |