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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, 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, Digia gives you certain additional
** rights. These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef MOCKAUDIODECODERCONTROL_H
#define MOCKAUDIODECODERCONTROL_H
#include "qmediacontrol.h"
#include "qaudiodecodercontrol.h"
#include <QtCore/qpair.h>
#include "qaudiobuffer.h"
#include <QTimer>
#include <QIODevice>
#define MOCK_DECODER_MAX_BUFFERS 10
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Multimedia)
class MockAudioDecoderControl : public QAudioDecoderControl
{
Q_OBJECT
public:
MockAudioDecoderControl(QObject *parent = 0)
: QAudioDecoderControl(parent)
, mState(QAudioDecoder::StoppedState)
, mDevice(0)
, mPosition(-1)
, mSerial(0)
{
mFormat.setChannelCount(1);
mFormat.setSampleSize(8);
mFormat.setSampleRate(1000);
mFormat.setCodec("audio/x-raw");
mFormat.setSampleType(QAudioFormat::UnSignedInt);
}
QAudioDecoder::State state() const
{
return mState;
}
QString sourceFilename() const
{
return mSource;
}
QAudioFormat audioFormat() const
{
return mFormat;
}
void setAudioFormat(const QAudioFormat &format)
{
if (mFormat != format) {
mFormat = format;
emit formatChanged(mFormat);
}
}
void setSourceFilename(const QString &fileName)
{
mSource = fileName;
mDevice = 0;
stop();
}
QIODevice* sourceDevice() const
{
return mDevice;
}
void setSourceDevice(QIODevice *device)
{
mDevice = device;
mSource.clear();
stop();
}
// When decoding we decode to first buffer, then second buffer
// we then stop until the first is read again and so on, for
// 5 buffers
void start()
{
if (mState == QAudioDecoder::StoppedState) {
if (!mSource.isEmpty()) {
mState = QAudioDecoder::DecodingState;
emit stateChanged(mState);
emit durationChanged(duration());
QTimer::singleShot(50, this, SLOT(pretendDecode()));
} else {
emit error(QAudioDecoder::ResourceError, "No source set");
}
}
}
void stop()
{
if (mState != QAudioDecoder::StoppedState) {
mState = QAudioDecoder::StoppedState;
mSerial = 0;
mPosition = 0;
mBuffers.clear();
emit stateChanged(mState);
emit bufferAvailableChanged(false);
}
}
QAudioBuffer read()
{
QAudioBuffer a;
if (mBuffers.length() > 0) {
a = mBuffers.takeFirst();
mPosition = a.startTime() / 1000;
emit positionChanged(mPosition);
if (mBuffers.isEmpty())
emit bufferAvailableChanged(false);
if (mBuffers.isEmpty() && mSerial >= MOCK_DECODER_MAX_BUFFERS) {
mState = QAudioDecoder::StoppedState;
emit finished();
emit stateChanged(mState);
} else
QTimer::singleShot(50, this, SLOT(pretendDecode()));
}
return a;
}
bool bufferAvailable() const
{
return mBuffers.length() > 0;
}
qint64 position() const
{
return mPosition;
}
qint64 duration() const
{
return (sizeof(mSerial) * MOCK_DECODER_MAX_BUFFERS * qint64(1000)) / (mFormat.sampleRate() * mFormat.channelCount());
}
private slots:
void pretendDecode()
{
// Check if we've reached end of stream
if (mSerial >= MOCK_DECODER_MAX_BUFFERS)
return;
// We just keep the length of mBuffers to 3 or less.
if (mBuffers.length() < 3) {
QByteArray b(sizeof(mSerial), 0);
memcpy(b.data(), &mSerial, sizeof(mSerial));
qint64 position = (sizeof(mSerial) * mSerial * qint64(1000000)) / (mFormat.sampleRate() * mFormat.channelCount());
mSerial++;
mBuffers.push_back(QAudioBuffer(b, mFormat, position));
emit bufferReady();
if (mBuffers.count() == 1)
emit bufferAvailableChanged(true);
}
}
public:
QAudioDecoder::State mState;
QString mSource;
QIODevice *mDevice;
QAudioFormat mFormat;
qint64 mPosition;
int mSerial;
QList<QAudioBuffer> mBuffers;
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // QAUDIODECODERCONTROL_H
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