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