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/**************************************************************************
copyright : (C) 2007 by Lukáš Lalinský
email : lalinsky@gmail.com
**************************************************************************/
/***************************************************************************
* This library is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License version *
* 2.1 as published by the Free Software Foundation. *
* *
* This library 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 *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this library; if not, write to the Free Software *
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA *
* 02110-1301 USA *
* *
* Alternatively, this file is available under the Mozilla Public *
* License Version 1.1. You may obtain a copy of the License at *
* http://www.mozilla.org/MPL/ *
***************************************************************************/
#include <tdebug.h>
#include <tstring.h>
#include <tpropertymap.h>
#include <tagutils.h>
#include "mp4atom.h"
#include "mp4tag.h"
#include "mp4file.h"
using namespace TagLib;
namespace
{
bool checkValid(const MP4::AtomList &list)
{
for(MP4::AtomList::ConstIterator it = list.begin(); it != list.end(); ++it) {
if((*it)->length == 0)
return false;
if(!checkValid((*it)->children))
return false;
}
return true;
}
}
class MP4::File::FilePrivate
{
public:
FilePrivate() :
tag(0),
atoms(0),
properties(0) {}
~FilePrivate()
{
delete atoms;
delete tag;
delete properties;
}
MP4::Tag *tag;
MP4::Atoms *atoms;
MP4::Properties *properties;
};
////////////////////////////////////////////////////////////////////////////////
// static members
////////////////////////////////////////////////////////////////////////////////
bool MP4::File::isSupported(IOStream *stream)
{
// An MP4 file has to have an "ftyp" box first.
const ByteVector id = Utils::readHeader(stream, 8, false);
return id.containsAt("ftyp", 4);
}
////////////////////////////////////////////////////////////////////////////////
// public members
////////////////////////////////////////////////////////////////////////////////
MP4::File::File(FileName file, bool readProperties, AudioProperties::ReadStyle) :
TagLib::File(file),
d(new FilePrivate())
{
if(isOpen())
read(readProperties);
}
MP4::File::File(IOStream *stream, bool readProperties, AudioProperties::ReadStyle) :
TagLib::File(stream),
d(new FilePrivate())
{
if(isOpen())
read(readProperties);
}
MP4::File::~File()
{
delete d;
}
MP4::Tag *
MP4::File::tag() const
{
return d->tag;
}
PropertyMap MP4::File::properties() const
{
return d->tag->properties();
}
void MP4::File::removeUnsupportedProperties(const StringList &properties)
{
d->tag->removeUnsupportedProperties(properties);
}
PropertyMap MP4::File::setProperties(const PropertyMap &properties)
{
return d->tag->setProperties(properties);
}
MP4::Properties *
MP4::File::audioProperties() const
{
return d->properties;
}
void
MP4::File::read(bool readProperties)
{
if(!isValid())
return;
d->atoms = new Atoms(this);
if(!checkValid(d->atoms->atoms)) {
setValid(false);
return;
}
// must have a moov atom, otherwise consider it invalid
if(!d->atoms->find("moov")) {
setValid(false);
return;
}
d->tag = new Tag(this, d->atoms);
if(readProperties) {
d->properties = new Properties(this, d->atoms);
}
}
bool
MP4::File::save()
{
if(readOnly()) {
debug("MP4::File::save() -- File is read only.");
return false;
}
if(!isValid()) {
debug("MP4::File::save() -- Trying to save invalid file.");
return false;
}
return d->tag->save();
}
bool
MP4::File::hasMP4Tag() const
{
return (d->atoms->find("moov", "udta", "meta", "ilst") != 0);
}
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