a22a0195f1
It's easier to change only the necessary part of encoding settings. The settings are applied during the next event loop or before recording starts. Change-Id: Ia2b5c93826a302212aa7f79a0c75e4cbaaf1dd7a Reviewed-by: Ling Hu <ling.hu@nokia.com> Reviewed-by: Michael Goddard <michael.goddard@nokia.com>
359 lines
11 KiB
C++
359 lines
11 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtCore/qdebug.h>
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#include <QtCore/qurl.h>
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#include <QtCore/qdir.h>
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#include <qaudiodeviceinfo.h>
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#include "qmediarecorder.h"
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#include "audiocapturesession.h"
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AudioCaptureSession::AudioCaptureSession(QObject *parent):
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QObject(parent)
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{
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m_deviceInfo = new QAudioDeviceInfo(QAudioDeviceInfo::defaultInputDevice());
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m_audioInput = 0;
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m_position = 0;
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m_state = QMediaRecorder::StoppedState;
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m_format.setFrequency(8000);
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m_format.setChannels(1);
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m_format.setSampleSize(8);
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m_format.setSampleType(QAudioFormat::UnSignedInt);
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m_format.setCodec("audio/pcm");
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wavFile = true;
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}
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AudioCaptureSession::~AudioCaptureSession()
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{
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stop();
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if(m_audioInput)
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delete m_audioInput;
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}
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QAudioDeviceInfo* AudioCaptureSession::deviceInfo() const
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{
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return m_deviceInfo;
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}
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QAudioFormat AudioCaptureSession::format() const
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{
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return m_format;
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}
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bool AudioCaptureSession::isFormatSupported(const QAudioFormat &format) const
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{
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if(m_deviceInfo) {
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if(format.codec().contains(QLatin1String("audio/x-wav"))) {
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QAudioFormat fmt = format;
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fmt.setCodec("audio/pcm");
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return m_deviceInfo->isFormatSupported(fmt);
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} else
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return m_deviceInfo->isFormatSupported(format);
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}
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return false;
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}
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bool AudioCaptureSession::setFormat(const QAudioFormat &format)
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{
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if(m_deviceInfo) {
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QAudioFormat fmt = format;
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if(m_deviceInfo->isFormatSupported(fmt)) {
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m_format = fmt;
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if(m_audioInput) delete m_audioInput;
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m_audioInput = 0;
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QList<QAudioDeviceInfo> devices = QAudioDeviceInfo::availableDevices(QAudio::AudioInput);
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for(int i=0;i<devices.size();i++) {
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if(qstrcmp(m_deviceInfo->deviceName().toLocal8Bit().constData(),
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devices.at(i).deviceName().toLocal8Bit().constData()) == 0) {
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m_audioInput = new QAudioInput(devices.at(i),m_format);
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connect(m_audioInput,SIGNAL(stateChanged(QAudio::State)),this,SLOT(stateChanged(QAudio::State)));
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connect(m_audioInput,SIGNAL(notify()),this,SLOT(notify()));
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break;
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}
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}
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} else {
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m_format = m_deviceInfo->preferredFormat();
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qWarning()<<"failed to setFormat using preferred...";
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}
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}
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return false;
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}
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QStringList AudioCaptureSession::supportedContainers() const
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{
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QStringList list;
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if(m_deviceInfo) {
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if (m_deviceInfo->supportedCodecs().size() > 0) {
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list << "audio/x-wav";
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list << "audio/pcm";
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}
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}
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return list;
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}
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QString AudioCaptureSession::containerDescription(const QString &formatMimeType) const
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{
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if(m_deviceInfo) {
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if (formatMimeType.contains(QLatin1String("audio/pcm")))
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return tr("RAW file format");
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if (formatMimeType.contains(QLatin1String("audio/x-wav")))
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return tr("WAV file format");
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}
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return QString();
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}
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void AudioCaptureSession::setContainerFormat(const QString &formatMimeType)
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{
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if (!formatMimeType.contains(QLatin1String("audio/x-wav")) &&
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!formatMimeType.contains(QLatin1String("audio/pcm")) &&
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!formatMimeType.isEmpty())
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return;
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if(m_deviceInfo) {
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if (!m_deviceInfo->supportedCodecs().contains(QLatin1String("audio/pcm")))
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return;
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if (formatMimeType.isEmpty() || formatMimeType.contains(QLatin1String("audio/x-wav"))) {
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wavFile = true;
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m_format.setCodec("audio/pcm");
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} else {
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wavFile = false;
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m_format.setCodec(formatMimeType);
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}
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}
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}
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QString AudioCaptureSession::containerFormat() const
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{
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if(wavFile)
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return QString("audio/x-wav");
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return QString("audio/pcm");
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}
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QUrl AudioCaptureSession::outputLocation() const
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{
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return m_actualSink;
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}
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bool AudioCaptureSession::setOutputLocation(const QUrl& sink)
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{
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m_sink = m_actualSink = sink;
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return true;
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}
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qint64 AudioCaptureSession::position() const
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{
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return m_position;
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}
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int AudioCaptureSession::state() const
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{
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return int(m_state);
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}
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QDir AudioCaptureSession::defaultDir() const
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{
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QStringList dirCandidates;
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#if defined(Q_WS_MAEMO_6)
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dirCandidates << QLatin1String("/home/user/MyDocs");
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#endif
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dirCandidates << QDir::home().filePath("Documents");
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dirCandidates << QDir::home().filePath("My Documents");
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dirCandidates << QDir::homePath();
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dirCandidates << QDir::currentPath();
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dirCandidates << QDir::tempPath();
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foreach (const QString &path, dirCandidates) {
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QDir dir(path);
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if (dir.exists() && QFileInfo(path).isWritable())
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return dir;
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}
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return QDir();
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}
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QString AudioCaptureSession::generateFileName(const QDir &dir, const QString &ext) const
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{
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int lastClip = 0;
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foreach(QString fileName, dir.entryList(QStringList() << QString("clip_*.%1").arg(ext))) {
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int imgNumber = fileName.mid(5, fileName.size()-6-ext.length()).toInt();
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lastClip = qMax(lastClip, imgNumber);
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}
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QString name = QString("clip_%1.%2").arg(lastClip+1,
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4, //fieldWidth
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10,
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QLatin1Char('0')).arg(ext);
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return dir.absoluteFilePath(name);
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}
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void AudioCaptureSession::record()
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{
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if(!m_audioInput) {
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setFormat(m_format);
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}
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m_actualSink = m_sink;
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if (m_actualSink.isEmpty()) {
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QString ext = wavFile ? QLatin1String("wav") : QLatin1String("raw");
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m_actualSink = generateFileName(defaultDir(), ext);
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}
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if(m_actualSink.toLocalFile().length() > 0)
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file.setFileName(m_actualSink.toLocalFile());
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else
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file.setFileName(m_actualSink.toString());
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if(m_audioInput) {
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if(m_state == QMediaRecorder::StoppedState) {
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if(file.open(QIODevice::WriteOnly)) {
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memset(&header,0,sizeof(CombinedHeader));
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memcpy(header.riff.descriptor.id,"RIFF",4);
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header.riff.descriptor.size = 0xFFFFFFFF; // This should be updated on stop(), filesize-8
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memcpy(header.riff.type,"WAVE",4);
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memcpy(header.wave.descriptor.id,"fmt ",4);
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header.wave.descriptor.size = 16;
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header.wave.audioFormat = 1; // for PCM data
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header.wave.numChannels = m_format.channels();
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header.wave.sampleRate = m_format.frequency();
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header.wave.byteRate = m_format.frequency()*m_format.channels()*m_format.sampleSize()/8;
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header.wave.blockAlign = m_format.channels()*m_format.sampleSize()/8;
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header.wave.bitsPerSample = m_format.sampleSize();
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memcpy(header.data.descriptor.id,"data",4);
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header.data.descriptor.size = 0xFFFFFFFF; // This should be updated on stop(),samples*channels*sampleSize/8
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if (wavFile)
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file.write((char*)&header,sizeof(CombinedHeader));
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m_audioInput->start(qobject_cast<QIODevice*>(&file));
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} else {
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emit error(1,QString("can't open source, failed"));
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m_state = QMediaRecorder::StoppedState;
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emit stateChanged(m_state);
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}
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}
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}
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m_state = QMediaRecorder::RecordingState;
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}
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void AudioCaptureSession::pause()
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{
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if(m_audioInput)
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m_audioInput->stop();
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m_state = QMediaRecorder::PausedState;
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}
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void AudioCaptureSession::stop()
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{
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if(m_audioInput) {
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m_audioInput->stop();
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file.close();
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if (wavFile) {
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qint32 fileSize = file.size()-8;
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file.open(QIODevice::ReadWrite | QIODevice::Unbuffered);
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file.read((char*)&header,sizeof(CombinedHeader));
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header.riff.descriptor.size = fileSize; // filesize-8
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header.data.descriptor.size = fileSize-44; // samples*channels*sampleSize/8
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file.seek(0);
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file.write((char*)&header,sizeof(CombinedHeader));
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file.close();
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}
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m_position = 0;
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}
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m_state = QMediaRecorder::StoppedState;
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}
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void AudioCaptureSession::stateChanged(QAudio::State state)
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{
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switch(state) {
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case QAudio::ActiveState:
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emit stateChanged(QMediaRecorder::RecordingState);
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break;
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default:
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if(!((m_state == QMediaRecorder::PausedState)||(m_state == QMediaRecorder::StoppedState)))
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m_state = QMediaRecorder::StoppedState;
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emit stateChanged(m_state);
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break;
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}
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}
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void AudioCaptureSession::notify()
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{
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m_position += m_audioInput->notifyInterval();
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emit positionChanged(m_position);
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}
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void AudioCaptureSession::setCaptureDevice(const QString &deviceName)
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{
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m_captureDevice = deviceName;
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if(m_deviceInfo)
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delete m_deviceInfo;
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m_deviceInfo = 0;
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QList<QAudioDeviceInfo> devices = QAudioDeviceInfo::availableDevices(QAudio::AudioInput);
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for(int i = 0; i < devices.size(); i++) {
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if(qstrcmp(m_captureDevice.toLocal8Bit().constData(),
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devices.at(i).deviceName().toLocal8Bit().constData())==0){
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m_deviceInfo = new QAudioDeviceInfo(QAudioDeviceInfo::defaultInputDevice());
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return;
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}
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}
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m_deviceInfo = new QAudioDeviceInfo(QAudioDeviceInfo::defaultInputDevice());
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}
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