src/3rdparty/phonon/qt7/quicktimestreamreader.mm
author Eckhart Koeppen <eckhart.koppen@nokia.com>
Wed, 28 Apr 2010 13:15:16 +0300 (2010-04-28)
branchRCL_3
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/*  This file is part of the KDE project.
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    Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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    This library is free software: you can redistribute it and/or modify
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    it under the terms of the GNU Lesser General Public License as published by
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    the Free Software Foundation, either version 2.1 or 3 of the License.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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    GNU Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public License
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    along with this library.  If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "backendheader.h"
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#include "quicktimestreamreader.h"
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QT_BEGIN_NAMESPACE
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namespace Phonon
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{
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namespace QT7
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{
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QuickTimeStreamReader::QuickTimeStreamReader(const Phonon::MediaSource &source)
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{
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    connectToSource(source);
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}
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QuickTimeStreamReader::~QuickTimeStreamReader()
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{
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}
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bool QuickTimeStreamReader::readAllData()
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{
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    int oldSize = m_buffer.size();
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    while (m_buffer.size() < m_size){
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        needData();
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        if (oldSize == currentBufferSize())
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            BACKEND_ASSERT3(oldSize != currentBufferSize(),
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                "Could not create new movie from IO stream. Not enough free memory to preload the whole movie.",
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                FATAL_ERROR, false)
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        oldSize = m_buffer.size();
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    }
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    return true;
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}
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QByteArray *QuickTimeStreamReader::pointerToData()
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{
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    return &m_buffer;
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}
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int QuickTimeStreamReader::readData(long offset, long size, void *data)
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{
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//    QReadLocker readLocker(&m_lock);
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    if (streamSize() != 1 && offset + size > streamSize()){
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        size = streamSize() - offset;
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    }
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    if (currentPos() - currentBufferSize() != offset)
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        setCurrentPos(offset);
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    int oldSize = currentBufferSize();
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    while (currentBufferSize() < int(size)) {
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        needData();
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        if (oldSize == currentBufferSize())
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            break;
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        oldSize = currentBufferSize();
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    }
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    int bytesRead = qMin(currentBufferSize(), int(size));
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//    QWriteLocker writeLocker(&m_lock);
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    qMemCopy(data, m_buffer.data(), bytesRead);
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    m_buffer = m_buffer.mid(bytesRead);
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    return bytesRead;
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}
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void QuickTimeStreamReader::writeData(const QByteArray &data)
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{
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    QWriteLocker locker(&m_lock);
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    m_pos += data.size();
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    m_buffer += data;
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}
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void QuickTimeStreamReader::endOfData()
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{
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}
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void QuickTimeStreamReader::setStreamSize(qint64 newSize)
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{
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    m_size = newSize;
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}
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qint64 QuickTimeStreamReader::streamSize() const
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{
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    return m_size;
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}
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void QuickTimeStreamReader::setStreamSeekable(bool s)
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{
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    m_seekable = s;
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}
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bool QuickTimeStreamReader::streamSeekable() const
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{
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    return m_seekable;
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}
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void QuickTimeStreamReader::setCurrentPos(qint64 pos)
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{
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    QWriteLocker locker(&m_lock);
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    m_pos = pos;
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    seekStream(pos);
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    m_buffer.clear();
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}
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qint64 QuickTimeStreamReader::currentPos() const
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{
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    return m_pos;
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}
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int QuickTimeStreamReader::currentBufferSize() const
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{
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    QReadLocker locker(&m_lock);
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    return m_buffer.size();
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}
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}} //namespace Phonon::QT7
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QT_END_NAMESPACE
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#include "moc_quicktimestreamreader.cpp"
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