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/***************************************************************************
* Copyright (C) 2009-2012 by Ilya Kotov *
* forkotov02@hotmail.ru *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include <taglib/tag.h>
#include <taglib/fileref.h>
#include <taglib/vorbisfile.h>
#include <taglib/xiphcomment.h>
#include <taglib/tmap.h>
#include "vorbismetadatamodel.h"
#define QStringToTString_qt4(s) TagLib::String(s.toUtf8().constData(), TagLib::String::UTF8)
#define TStringToQString_qt4(s) QString::fromUtf8(s.toCString(true)).trimmed()
VorbisMetaDataModel::VorbisMetaDataModel(const QString &path, QObject *parent) : MetaDataModel(parent)
{
m_path = path;
m_tags << new VorbisCommentModel(path);
}
VorbisMetaDataModel::~VorbisMetaDataModel()
{
while(!m_tags.isEmpty())
delete m_tags.takeFirst();
}
QHash<QString, QString> VorbisMetaDataModel::audioProperties()
{
QHash<QString, QString> ap;
TagLib::Ogg::Vorbis::File f (m_path.toLocal8Bit().constData());
if(f.audioProperties())
{
QString text = QString("%1").arg(f.audioProperties()->length()/60);
text +=":"+QString("%1").arg(f.audioProperties()->length()%60,2,10,QChar('0'));
ap.insert(tr("Length"), text);
ap.insert(tr("Sample rate"), QString("%1 " + tr("Hz")).arg(f.audioProperties()->sampleRate()));
ap.insert(tr("Channels"), QString("%1").arg(f.audioProperties()->channels()));
ap.insert(tr("Bitrate"), QString("%1 " + tr("kbps")).arg(f.audioProperties()->bitrate()));
ap.insert(tr("File size"), QString("%1 "+tr("KB")).arg(f.length()/1024));
}
return ap;
}
QList<TagModel* > VorbisMetaDataModel::tags()
{
return m_tags;
}
QPixmap VorbisMetaDataModel::cover()
{
TagLib::Ogg::Vorbis::File file(m_path.toLocal8Bit().constData());
TagLib::Ogg::XiphComment *tag = file.tag();
if(!tag)
return QPixmap();
TagLib::StringList list = tag->fieldListMap()["METADATA_BLOCK_PICTURE"];
if(list.isEmpty())
return QPixmap();
for(uint i = 0; i < list.size(); ++i)
{
TagLib::String value = list[i];
QByteArray block = QByteArray::fromBase64(TStringToQString_qt4(value).toAscii());
if(block.size() < 32)
continue;
qint64 pos = 0;
if(readPictureBlockField(block, pos) != 3) //picture type, use front cover only
continue;
pos += 4;
int mimeLength = readPictureBlockField(block, pos); //mime type length
pos += 4;
pos += mimeLength; //skip mime type
int descLength = readPictureBlockField(block, pos); //description length
pos += 4;
pos += descLength; //skip description
pos += 4; //width
pos += 4; //height
pos += 4; //color depth
pos += 4; //the number of colors used
int length = readPictureBlockField(block, pos); //picture size
pos += 4;
QPixmap cover;
cover.loadFromData(block.mid(pos, length)); //read binary picture data
return cover;
}
return QPixmap();
}
ulong VorbisMetaDataModel::readPictureBlockField(QByteArray data, int offset)
{
return (((uchar)data.data()[offset] & 0xff) << 24) |
(((uchar)data.data()[offset+1] & 0xff) << 16) |
(((uchar)data.data()[offset+2] & 0xff) << 16) |
((uchar)data.data()[offset+3] & 0xff);
}
VorbisCommentModel::VorbisCommentModel(const QString &path) : TagModel(TagModel::Save)
{
m_file = new TagLib::Ogg::Vorbis::File (path.toLocal8Bit().constData());
m_tag = m_file->tag();
}
VorbisCommentModel::~VorbisCommentModel()
{
delete m_file;
}
const QString VorbisCommentModel::name()
{
return "Vorbis Comment";
}
const QString VorbisCommentModel::value(Qmmp::MetaData key)
{
if(!m_tag)
return QString();
switch((int) key)
{
case Qmmp::TITLE:
return TStringToQString_qt4(m_tag->title());
case Qmmp::ARTIST:
return TStringToQString_qt4(m_tag->artist());
case Qmmp::ALBUM:
return TStringToQString_qt4(m_tag->album());
case Qmmp::COMMENT:
return TStringToQString_qt4(m_tag->comment());
case Qmmp::GENRE:
return TStringToQString_qt4(m_tag->genre());
case Qmmp::COMPOSER:
if(m_tag->fieldListMap()["COMPOSER"].isEmpty())
return QString();
else
return TStringToQString_qt4(m_tag->fieldListMap()["COMPOSER"].front());
case Qmmp::YEAR:
return QString::number(m_tag->year());
case Qmmp::TRACK:
return QString::number(m_tag->track());
case Qmmp::DISCNUMBER:
if(m_tag->fieldListMap()["DISCNUMBER"].isEmpty())
return QString();
else
return TStringToQString_qt4(m_tag->fieldListMap()["DISCNUMBER"].front());
}
return QString();
}
void VorbisCommentModel::setValue(Qmmp::MetaData key, const QString &value)
{
if(!m_tag)
return;
TagLib::String str = QStringToTString_qt4(value);
switch((int) key)
{
case Qmmp::TITLE:
m_tag->setTitle(str);
return;
case Qmmp::ARTIST:
m_tag->setArtist(str);
return;
case Qmmp::ALBUM:
m_tag->setAlbum(str);
return;
case Qmmp::COMMENT:
m_tag->setComment(str);
return;
case Qmmp::GENRE:
m_tag->setGenre(str);
return;
case Qmmp::COMPOSER:
value.isEmpty() ?
m_tag->removeField("COMPOSER"):
m_tag->addField("COMPOSER", str, true);
return;
case Qmmp::TRACK:
m_tag->setTrack(value.toInt());
return;
case Qmmp::YEAR:
m_tag->setYear(value.toInt());
return;
case Qmmp::DISCNUMBER:
value == "0" ?
m_tag->removeField("DISCNUMBER"):
m_tag->addField("DISCNUMBER", str, true);
}
}
void VorbisCommentModel::save()
{
if(m_tag)
m_file->save();
//taglib bug workarround
QString path = QString::fromLocal8Bit(m_file->name());
delete m_file;
m_file = new TagLib::Ogg::Vorbis::File(path.toLocal8Bit().constData());
m_tag = m_file->tag();
}
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