/***************************************************************************
copyright : (C) 2004 by Allan Sandfeld Jensen
email : kde@carewolf.org
***************************************************************************/
/***************************************************************************
* 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/ *
***************************************************************************/
#ifndef TAGLIB_MPCFILE_H
#define TAGLIB_MPCFILE_H
#include "tfile.h"
#include "taglib_export.h"
#include "tag.h"
#include "mpcproperties.h"
namespace TagLib {
class Tag;
namespace ID3v1 { class Tag; }
namespace APE { class Tag; }
//! An implementation of MPC metadata
/*!
* This is an implementation of MPC metadata.
*
* This supports ID3v1 and APE (v1 and v2) style comments as well as reading stream
* properties from the file. ID3v2 tags are invalid in MPC-files, but will be skipped
* and ignored.
*/
namespace MPC {
//! An implementation of TagLib::File with MPC specific methods
/*!
* This implements and provides an interface for MPC files to the
* TagLib::Tag and TagLib::AudioProperties interfaces by way of implementing
* the abstract TagLib::File API as well as providing some additional
* information specific to MPC files.
* The only invalid tag combination supported is an ID3v1 tag after an APE tag.
*/
class TAGLIB_EXPORT File : public TagLib::File
{
public:
/*!
* This set of flags is used for various operations and is suitable for
* being OR-ed together.
*/
enum TagTypes {
//! Empty set. Matches no tag types.
NoTags = 0x0000,
//! Matches ID3v1 tags.
ID3v1 = 0x0001,
//! Matches ID3v2 tags.
ID3v2 = 0x0002,
//! Matches APE tags.
APE = 0x0004,
//! Matches all tag types.
AllTags = 0xffff
};
/*!
* Constructs an MPC file from \a file. If \a readProperties is \c true the
* file's audio properties will also be read.
*
* \note In the current implementation, \a propertiesStyle is ignored.
*/
File(FileName file, bool readProperties = true,
Properties::ReadStyle propertiesStyle = Properties::Average);
/*!
* Constructs an MPC file from \a stream. If \a readProperties is \c true the
* file's audio properties will also be read.
*
* \note TagLib will *not* take ownership of the stream, the caller is
* responsible for deleting it after the File object.
*
* \note In the current implementation, \a propertiesStyle is ignored.
*/
File(IOStream *stream, bool readProperties = true,
Properties::ReadStyle propertiesStyle = Properties::Average);
/*!
* Destroys this instance of the File.
*/
~File() override;
File(const File &) = delete;
File &operator=(const File &) = delete;
/*!
* Returns the Tag for this file. This will be an APE tag, an ID3v1 tag
* or a combination of the two.
*/
TagLib::Tag *tag() const override;
/*!
* Implements the unified property interface -- export function.
* If the file contains both an APE and an ID3v1 tag, only the APE
* tag will be converted to the PropertyMap.
*/
PropertyMap properties() const override;
void removeUnsupportedProperties(const StringList &properties) override;
/*!
* Implements the unified property interface -- import function.
* Affects only the APEv2 tag which will be created if necessary.
* If an ID3v1 tag exists, it will be updated as well.
*/
PropertyMap setProperties(const PropertyMap &) override;
/*!
* Returns the MPC::Properties for this file. If no audio properties
* were read then this will return a null pointer.
*/
Properties *audioProperties() const override;
/*!
* Saves the file.
*
* This returns \c true if the save was successful.
*/
bool save() override;
/*!
* Returns a pointer to the ID3v1 tag of the file.
*
* If \a create is \c false (the default) this returns a null pointer
* if there is no valid APE tag. If \a create is \c true it will create
* an APE tag if one does not exist and returns a valid pointer.
*
* \note This may return a valid pointer regardless of whether or not the
* file on disk has an ID3v1 tag. Use hasID3v1Tag() to check if the file
* on disk actually has an ID3v1 tag.
*
* \note The Tag is still owned by the MPC::File and should not be
* deleted by the user. It will be deleted when the file (object) is
* destroyed.
*
* \see hasID3v1Tag()
*/
ID3v1::Tag *ID3v1Tag(bool create = false);
/*!
* Returns a pointer to the APE tag of the file.
*
* If \a create is \c false (the default) this may return a null pointer
* if there is no valid APE tag. If \a create is \c true it will create
* an APE tag if one does not exist and returns a valid pointer. If
* there already is an ID3v1 tag, the new APE tag will be placed before it.
*
* \note This may return a valid pointer regardless of whether or not the
* file on disk has an APE tag. Use hasAPETag() to check if the file
* on disk actually has an APE tag.
*
* \note The Tag is still owned by the MPC::File and should not be
* deleted by the user. It will be deleted when the file (object) is
* destroyed.
*
* \see hasAPETag()
*/
APE::Tag *APETag(bool create = false);
/*!
* This will remove the tags that match the OR-ed together TagTypes from the
* file. By default it removes all tags.
*
* \warning This will also invalidate pointers to the tags
* as their memory will be freed.
*
* \note In order to make the removal permanent save() still needs to be called.
*/
void strip(int tags = AllTags);
/*!
* Returns whether or not the file on disk actually has an ID3v1 tag.
*
* \see ID3v1Tag()
*/
bool hasID3v1Tag() const;
/*!
* Returns whether or not the file on disk actually has an APE tag.
*
* \see APETag()
*/
bool hasAPETag() const;
/*!
* Returns whether or not the given \a stream can be opened as an MPC
* file.
*
* \note This method is designed to do a quick check. The result may
* not necessarily be correct.
*/
static bool isSupported(IOStream *stream);
private:
void read(bool readProperties);
class FilePrivate;
TAGLIB_MSVC_SUPPRESS_WARNING_NEEDS_TO_HAVE_DLL_INTERFACE
std::unique_ptr d;
};
} // namespace MPC
} // namespace TagLib
#endif