src/Model_Artwork.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2012 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This program is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation; either version 2 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License along
  16 // with this program; if not, write to the Free Software Foundation, Inc.,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 // http://www.gnu.org/licenses/gpl-2.0.txt
  20 ///////////////////////////////////////////////////////////////////////////////
  21
  22 #include "Model_Artwork.h"
  23
  24 #include "Global.h"
  25
  26 #include <QFile>
  27 #include <QMutexLocker>
  28
  29 ////////////////////////////////////////////////////////////
  30
  31 QMutex ArtworkModel::m_mutex;
  32 QMap<QString, unsigned int> ArtworkModel::m_refCount;
  33 QMap<QString, QFile*> ArtworkModel::m_fileHandle;
  34
  35 ////////////////////////////////////////////////////////////
  36 // Constructor & Destructor
  37 ////////////////////////////////////////////////////////////
  38
  39 ArtworkModel::ArtworkModel(void)
  40 {
  41         m_isOwner = false;
  42 }
  43
  44 ArtworkModel::ArtworkModel(const QString &fileName, bool isOwner)
  45 {
  46         m_isOwner = false;
  47         setFilePath(fileName, isOwner);
  48 }
  49
  50 ArtworkModel::ArtworkModel(const ArtworkModel &model)
  51 {
  52         m_isOwner = false;
  53         setFilePath(model.m_filePath, model.m_isOwner);
  54 }
  55
  56 ArtworkModel &ArtworkModel::operator=(const ArtworkModel &model)
  57 {
  58         setFilePath(model.m_filePath, model.m_isOwner);
  59         return (*this);
  60 }
  61
  62 ArtworkModel::~ArtworkModel(void)
  63 {
  64         clear();
  65 }
  66
  67
  68 ////////////////////////////////////////////////////////////
  69 // Public Functions
  70 ////////////////////////////////////////////////////////////
  71
  72 const QString &ArtworkModel::filePath(void) const
  73 {
  74         return m_filePath;
  75 }
  76
  77 bool ArtworkModel::isOwner(void) const
  78 {
  79         return m_isOwner;
  80 }
  81
  82 void ArtworkModel::setFilePath(const QString &newPath, bool isOwner)
  83 {
  84         if(newPath.isEmpty() || m_filePath.isEmpty() || QString::compare(m_filePath, newPath,Qt::CaseInsensitive))
  85         {
  86                 clear();
  87
  88                 if(!newPath.isEmpty())
  89                 {
  90                         QMutexLocker lock(&m_mutex);
  91
  92                         if(!m_refCount.contains(newPath))
  93                         {
  94                                 m_refCount.insert(newPath, 0);
  95                                 m_fileHandle.insert(newPath, new QFile(newPath));
  96                                 m_fileHandle[newPath]->open(QIODevice::ReadOnly);
  97                         }
  98
  99                         m_refCount[newPath]++;
 100                 }
 101
 102                 m_filePath = newPath;
 103                 m_isOwner = isOwner;
 104         }
 105 }
 106
 107 void ArtworkModel:: clear(void)
 108 {
 109         if(!m_filePath.isEmpty())
 110         {
 111                 QMutexLocker lock(&m_mutex);
 112
 113                 if(m_refCount.contains(m_filePath))
 114                 {
 115                         if(--m_refCount[m_filePath] < 1)
 116                         {
 117                                 m_refCount.remove(m_filePath);
 118
 119                                 if(m_fileHandle.contains(m_filePath))
 120                                 {
 121                                         if(QFile *fileHandle = m_fileHandle.take(m_filePath))
 122                                         {
 123                                                 if(m_isOwner)
 124                                                 {
 125                                                         fileHandle->remove();
 126                                                 }
 127                                                 else
 128                                                 {
 129                                                         fileHandle->close();
 130                                                 }
 131                                                 LAMEXP_DELETE(fileHandle);
 132                                         }
 133                                 }
 134
 135                                 if(m_isOwner)
 136                                 {
 137                                         QFile::remove(m_filePath);
 138                                 }
 139                         }
 140                 }
 141
 142                 m_filePath.clear();
 143         }
 144 }