1 /*  This file is part of the KDE project.

     2 

     3 Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 

     5 This library is free software: you can redistribute it and/or modify

     6 it under the terms of the GNU Lesser General Public License as published by

     7 the Free Software Foundation, either version 2.1 or 3 of the License.

     8 

     9 This library is distributed in the hope that it will be useful,

    10 but WITHOUT ANY WARRANTY; without even the implied warranty of

    11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    12 GNU Lesser General Public License for more details.

    13 

    14 You should have received a copy of the GNU Lesser General Public License

    15 along with this library.  If not, see <http://www.gnu.org/licenses/>.

    16 */

    17 

    18 #include "streamreader.h"

    19 #include <QtCore/QMutex>

    20 #include <phonon/streaminterface.h>

    21 

    22 QT_BEGIN_NAMESPACE

    23 

    24 namespace Phonon

    25 {

    26 namespace Gstreamer

    27 {

    28 

    29 bool StreamReader::read(quint64 pos, int length, char * buffer)

    30 {

    31      if (currentPos() - currentBufferSize() != pos) {

    32          if (!streamSeekable())

    33              return false;

    34          setCurrentPos(pos);

    35      }

    36 

    37     while (currentBufferSize() < length) {

    38         int oldSize = currentBufferSize();

    39         needData();

    40         if (oldSize == currentBufferSize())

    41             return false; // We didn't get any data

    42     }

    43 

    44     qMemCopy(buffer, m_buffer.data(), length);

    45     //truncate the buffer

    46     m_buffer = m_buffer.mid(pos);    

    47     return true;

    48 }

    49 

    50 }

    51 }

    52 

    53 QT_END_NAMESPACE