diff options
Diffstat (limited to 'src/multimedia/audio/qaudioinput.cpp')
| -rw-r--r-- | src/multimedia/audio/qaudioinput.cpp | 402 |
1 files changed, 0 insertions, 402 deletions
diff --git a/src/multimedia/audio/qaudioinput.cpp b/src/multimedia/audio/qaudioinput.cpp deleted file mode 100644 index 2a5cefc..0000000 --- a/src/multimedia/audio/qaudioinput.cpp +++ /dev/null @@ -1,402 +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 Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** 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. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - - -#include "qaudio.h" -#include "qaudiodeviceinfo.h" -#include "qaudiosystem.h" -#include "qaudioinput.h" - -#include "qaudiodevicefactory_p.h" - -QT_BEGIN_NAMESPACE - -/*! - \class QAudioInput - \brief The QAudioInput class provides an interface for receiving audio data from an audio input device. - - \inmodule QtMultimedia - \ingroup multimedia - \since 1.0 - - You can construct an audio input with the system's - \l{QAudioDeviceInfo::defaultInputDevice()}{default audio input - device}. It is also possible to create QAudioInput with a - specific QAudioDeviceInfo. When you create the audio input, you - should also send in the QAudioFormat to be used for the recording - (see the QAudioFormat class description for details). - - To record to a file: - - QAudioInput lets you record audio with an audio input device. The - default constructor of this class will use the systems default - audio device, but you can also specify a QAudioDeviceInfo for a - specific device. You also need to pass in the QAudioFormat in - which you wish to record. - - Starting up the QAudioInput is simply a matter of calling start() - with a QIODevice opened for writing. For instance, to record to a - file, you can: - - \snippet doc/src/snippets/multimedia-snippets/audio.cpp Audio input class members - - \snippet doc/src/snippets/multimedia-snippets/audio.cpp Audio input setup - - This will start recording if the format specified is supported by - the input device (you can check this with - QAudioDeviceInfo::isFormatSupported(). In case there are any - snags, use the error() function to check what went wrong. We stop - recording in the \c stopRecording() slot. - - \snippet doc/src/snippets/multimedia-snippets/audio.cpp Audio input stop recording - - At any point in time, QAudioInput will be in one of four states: - active, suspended, stopped, or idle. These states are specified by - the QAudio::State enum. You can request a state change directly through - suspend(), resume(), stop(), reset(), and start(). The current - state is reported by state(). QAudioOutput will also signal you - when the state changes (stateChanged()). - - QAudioInput provides several ways of measuring the time that has - passed since the start() of the recording. The \c processedUSecs() - function returns the length of the stream in microseconds written, - i.e., it leaves out the times the audio input was suspended or idle. - The elapsedUSecs() function returns the time elapsed since start() was called regardless of - which states the QAudioInput has been in. - - If an error should occur, you can fetch its reason with error(). - The possible error reasons are described by the QAudio::Error - enum. The QAudioInput will enter the \l{QAudio::}{StoppedState} when - an error is encountered. Connect to the stateChanged() signal to - handle the error: - - \snippet doc/src/snippets/multimedia-snippets/audio.cpp Audio input state changed - - \sa QAudioOutput, QAudioDeviceInfo -*/ - -/*! - Construct a new audio input and attach it to \a parent. - The default audio input device is used with the output - \a format parameters. - \since 1.0 -*/ - -QAudioInput::QAudioInput(const QAudioFormat &format, QObject *parent): - QObject(parent) -{ - d = QAudioDeviceFactory::createDefaultInputDevice(format); - connect(d, SIGNAL(notify()), SIGNAL(notify())); - connect(d, SIGNAL(stateChanged(QAudio::State)), SIGNAL(stateChanged(QAudio::State))); -} - -/*! - Construct a new audio input and attach it to \a parent. - The device referenced by \a audioDevice is used with the input - \a format parameters. - \since 1.0 -*/ - -QAudioInput::QAudioInput(const QAudioDeviceInfo &audioDevice, const QAudioFormat &format, QObject *parent): - QObject(parent) -{ - d = QAudioDeviceFactory::createInputDevice(audioDevice, format); - connect(d, SIGNAL(notify()), SIGNAL(notify())); - connect(d, SIGNAL(stateChanged(QAudio::State)), SIGNAL(stateChanged(QAudio::State))); -} - -/*! - Destroy this audio input. -*/ - -QAudioInput::~QAudioInput() -{ - delete d; -} - -/*! - Uses the \a device as the QIODevice to transfer data. - Passing a QIODevice allows the data to be transferred without any extra code. - All that is required is to open the QIODevice. - - If able to successfully get audio data from the systems audio device the - state() is set to either QAudio::ActiveState or QAudio::IdleState, - error() is set to QAudio::NoError and the stateChanged() signal is emitted. - - If a problem occurs during this process the error() is set to QAudio::OpenError, - state() is set to QAudio::StoppedState and stateChanged() signal is emitted. - - \since 1.0 - \sa QIODevice -*/ - -void QAudioInput::start(QIODevice* device) -{ - d->start(device); -} - -/*! - Returns a pointer to the QIODevice being used to handle the data - transfer. This QIODevice can be used to read() audio data - directly. - - If able to access the systems audio device the state() is set to - QAudio::IdleState, error() is set to QAudio::NoError - and the stateChanged() signal is emitted. - - If a problem occurs during this process the error() is set to QAudio::OpenError, - state() is set to QAudio::StoppedState and stateChanged() signal is emitted. - - \since 1.0 - \sa QIODevice -*/ - -QIODevice* QAudioInput::start() -{ - return d->start(); -} - -/*! - Returns the QAudioFormat being used. - \since 1.0 -*/ - -QAudioFormat QAudioInput::format() const -{ - return d->format(); -} - -/*! - Stops the audio input, detaching from the system resource. - - Sets error() to QAudio::NoError, state() to QAudio::StoppedState and - emit stateChanged() signal. - \since 1.0 -*/ - -void QAudioInput::stop() -{ - d->stop(); -} - -/*! - Drops all audio data in the buffers, resets buffers to zero. - \since 1.0 -*/ - -void QAudioInput::reset() -{ - d->reset(); -} - -/*! - Stops processing audio data, preserving buffered audio data. - - Sets error() to QAudio::NoError, state() to QAudio::SuspendedState and - emit stateChanged() signal. - \since 1.0 -*/ - -void QAudioInput::suspend() -{ - d->suspend(); -} - -/*! - Resumes processing audio data after a suspend(). - - Sets error() to QAudio::NoError. - Sets state() to QAudio::ActiveState if you previously called start(QIODevice*). - Sets state() to QAudio::IdleState if you previously called start(). - emits stateChanged() signal. - \since 1.0 -*/ - -void QAudioInput::resume() -{ - d->resume(); -} - -/*! - Sets the audio buffer size to \a value milliseconds. - - Note: This function can be called anytime before start(), calls to this - are ignored after start(). It should not be assumed that the buffer size - set is the actual buffer size used, calling bufferSize() anytime after start() - will return the actual buffer size being used. - - \since 1.0 -*/ - -void QAudioInput::setBufferSize(int value) -{ - d->setBufferSize(value); -} - -/*! - Returns the audio buffer size in milliseconds. - - If called before start(), returns platform default value. - If called before start() but setBufferSize() was called prior, returns value set by setBufferSize(). - If called after start(), returns the actual buffer size being used. This may not be what was set previously - by setBufferSize(). - - \since 1.0 -*/ - -int QAudioInput::bufferSize() const -{ - return d->bufferSize(); -} - -/*! - Returns the amount of audio data available to read in bytes. - - NOTE: returned value is only valid while in QAudio::ActiveState or QAudio::IdleState - state, otherwise returns zero. - \since 1.0 -*/ - -int QAudioInput::bytesReady() const -{ - /* - -If not ActiveState|IdleState, return 0 - -return amount of audio data available to read - */ - return d->bytesReady(); -} - -/*! - Returns the period size in bytes. - - Note: This is the recommended read size in bytes. - \since 1.0 -*/ - -int QAudioInput::periodSize() const -{ - return d->periodSize(); -} - -/*! - Sets the interval for notify() signal to be emitted. - This is based on the \a ms of audio data processed - not on actual real-time. - The minimum resolution of the timer is platform specific and values - should be checked with notifyInterval() to confirm actual value - being used. - \since 1.0 -*/ - -void QAudioInput::setNotifyInterval(int ms) -{ - d->setNotifyInterval(ms); -} - -/*! - Returns the notify interval in milliseconds. - \since 1.0 -*/ - -int QAudioInput::notifyInterval() const -{ - return d->notifyInterval(); -} - -/*! - Returns the amount of audio data processed since start() - was called in microseconds. - \since 1.0 -*/ - -qint64 QAudioInput::processedUSecs() const -{ - return d->processedUSecs(); -} - -/*! - Returns the microseconds since start() was called, including time in Idle and - Suspend states. - \since 1.0 -*/ - -qint64 QAudioInput::elapsedUSecs() const -{ - return d->elapsedUSecs(); -} - -/*! - Returns the error state. - \since 1.0 -*/ - -QAudio::Error QAudioInput::error() const -{ - return d->error(); -} - -/*! - Returns the state of audio processing. - \since 1.0 -*/ - -QAudio::State QAudioInput::state() const -{ - return d->state(); -} - -/*! - \fn QAudioInput::stateChanged(QAudio::State state) - This signal is emitted when the device \a state has changed. - \since 1.0 -*/ - -/*! - \fn QAudioInput::notify() - This signal is emitted when x ms of audio data has been processed - the interval set by setNotifyInterval(x). - \since 1.0 -*/ - -QT_END_NAMESPACE - -#include "moc_qaudioinput.cpp" - |