151 lines
4.4 KiB
C++
151 lines
4.4 KiB
C++
/***************************************************************************
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copyright : (C) 2002 - 2008 by Scott Wheeler
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email : wheeler@kde.org
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***************************************************************************/
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/***************************************************************************
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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 version *
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* 2.1 as published by the Free Software Foundation. *
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* *
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* This library is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public *
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* License along with this library; if not, write to the Free Software *
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA *
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* 02110-1301 USA *
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* *
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* Alternatively, this file is available under the Mozilla Public *
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* License Version 1.1. You may obtain a copy of the License at *
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* http://www.mozilla.org/MPL/ *
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***************************************************************************/
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#include <bitset>
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#include <tstring.h>
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#include <tdebug.h>
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#include <tpropertymap.h>
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#include <tagutils.h>
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#include "vorbisfile.h"
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using namespace TagLib;
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class Vorbis::File::FilePrivate
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{
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public:
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FilePrivate() :
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comment(0),
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properties(0) {}
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~FilePrivate()
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{
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delete comment;
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delete properties;
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}
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Ogg::XiphComment *comment;
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Properties *properties;
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};
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namespace TagLib {
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/*!
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* Vorbis headers can be found with one type ID byte and the string "vorbis" in
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* an Ogg stream. 0x03 indicates the comment header.
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*/
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static const char vorbisCommentHeaderID[] = { 0x03, 'v', 'o', 'r', 'b', 'i', 's', 0 };
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}
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////////////////////////////////////////////////////////////////////////////////
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// static members
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////////////////////////////////////////////////////////////////////////////////
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bool Vorbis::File::isSupported(IOStream *stream)
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{
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// An Ogg Vorbis file has IDs "OggS" and "\x01vorbis" somewhere.
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const ByteVector buffer = Utils::readHeader(stream, bufferSize(), false);
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return (buffer.find("OggS") >= 0 && buffer.find("\x01vorbis") >= 0);
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}
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////////////////////////////////////////////////////////////////////////////////
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// public members
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////////////////////////////////////////////////////////////////////////////////
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Vorbis::File::File(FileName file, bool readProperties, Properties::ReadStyle) :
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Ogg::File(file),
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d(new FilePrivate())
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{
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if(isOpen())
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read(readProperties);
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}
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Vorbis::File::File(IOStream *stream, bool readProperties, Properties::ReadStyle) :
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Ogg::File(stream),
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d(new FilePrivate())
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{
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if(isOpen())
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read(readProperties);
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}
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Vorbis::File::~File()
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{
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delete d;
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}
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Ogg::XiphComment *Vorbis::File::tag() const
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{
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return d->comment;
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}
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PropertyMap Vorbis::File::properties() const
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{
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return d->comment->properties();
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}
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PropertyMap Vorbis::File::setProperties(const PropertyMap &properties)
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{
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return d->comment->setProperties(properties);
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}
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Vorbis::Properties *Vorbis::File::audioProperties() const
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{
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return d->properties;
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}
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bool Vorbis::File::save()
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{
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ByteVector v(vorbisCommentHeaderID);
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if(!d->comment)
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d->comment = new Ogg::XiphComment();
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v.append(d->comment->render());
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setPacket(1, v);
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return Ogg::File::save();
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}
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////////////////////////////////////////////////////////////////////////////////
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// private members
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////////////////////////////////////////////////////////////////////////////////
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void Vorbis::File::read(bool readProperties)
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{
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ByteVector commentHeaderData = packet(1);
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if(commentHeaderData.mid(0, 7) != vorbisCommentHeaderID) {
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debug("Vorbis::File::read() - Could not find the Vorbis comment header.");
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setValid(false);
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return;
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}
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d->comment = new Ogg::XiphComment(commentHeaderData.mid(7));
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if(readProperties)
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d->properties = new Properties(this);
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}
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