344 lines
12 KiB
C++
344 lines
12 KiB
C++
/***************************************************************************
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copyright : (C) 2003 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_FLACFILE_H
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#define TAGLIB_FLACFILE_H
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#include "taglib_export.h"
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#include "tfile.h"
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#include "tlist.h"
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#include "tag.h"
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#include "flacpicture.h"
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#include "flacproperties.h"
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namespace TagLib {
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class Tag;
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namespace ID3v2 { class FrameFactory; class Tag; }
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namespace ID3v1 { class Tag; }
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namespace Ogg { class XiphComment; }
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//! An implementation of FLAC metadata
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/*!
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* This is implementation of FLAC metadata for non-Ogg FLAC files. At some
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* point when Ogg / FLAC is more common there will be a similar implementation
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* under the Ogg hierarchy.
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*
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* This supports ID3v1, ID3v2 and Xiph style comments as well as reading stream
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* properties from the file.
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*/
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namespace FLAC {
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//! An implementation of TagLib::File with FLAC specific methods
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/*!
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* This implements and provides an interface for FLAC files to the
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* TagLib::Tag and TagLib::AudioProperties interfaces by way of implementing
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* the abstract TagLib::File API as well as providing some additional
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* information specific to FLAC files.
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*/
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class TAGLIB_EXPORT File : public TagLib::File
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{
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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
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* 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 Vorbis comments.
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XiphComment = 0x0001,
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//! Matches ID3v1 tags.
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ID3v1 = 0x0002,
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//! Matches ID3v2 tags.
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ID3v2 = 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 a FLAC file from \a file. If \a readProperties is true the
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* 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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* \deprecated This constructor will be dropped in favor of the one below
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* in a future version.
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*/
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File(FileName file, bool readProperties = true,
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Properties::ReadStyle propertiesStyle = Properties::Average);
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/*!
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* Constructs an FLAC file from \a file. If \a readProperties is true the
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* file's audio properties will also be read.
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*
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* If this file contains and ID3v2 tag the frames will be created using
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* \a frameFactory.
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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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// BIC: merge with the above constructor
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File(FileName file, ID3v2::FrameFactory *frameFactory,
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bool readProperties = true,
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Properties::ReadStyle propertiesStyle = Properties::Average);
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/*!
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* Constructs a FLAC file from \a stream. If \a readProperties is true the
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* 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
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* responsible for deleting it after the File object.
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*
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* If this file contains and ID3v2 tag the frames will be created using
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* \a frameFactory.
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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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// BIC: merge with the above constructor
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File(IOStream *stream, ID3v2::FrameFactory *frameFactory,
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bool readProperties = true,
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Properties::ReadStyle propertiesStyle = Properties::Average);
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/*!
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* Destroys this instance of the File.
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*/
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virtual ~File();
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/*!
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* Returns the Tag for this file. This will be a union of XiphComment,
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* ID3v1 and ID3v2 tags.
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*
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* \see ID3v2Tag()
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* \see ID3v1Tag()
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* \see XiphComment()
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*/
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virtual TagLib::Tag *tag() const;
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/*!
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* Implements the unified property interface -- export function.
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* If the file contains more than one tag (e.g. XiphComment and ID3v1),
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* only the first one (in the order XiphComment, ID3v2, ID3v1) will be
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* converted to the PropertyMap.
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*/
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PropertyMap properties() const;
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void removeUnsupportedProperties(const StringList &);
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/*!
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* Implements the unified property interface -- import function.
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* This always creates a Xiph comment, if none exists. The return value
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* relates to the Xiph comment only.
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* Ignores any changes to ID3v1 or ID3v2 comments since they are not allowed
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* in the FLAC specification.
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*/
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PropertyMap setProperties(const PropertyMap &);
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/*!
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* Returns the FLAC::Properties for this file. If no audio properties
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* were read then this will return a null pointer.
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*/
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virtual Properties *audioProperties() const;
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/*!
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* Save the file. This will primarily save the XiphComment, but
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* will also keep any old ID3-tags up to date. If the file
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* has no XiphComment, one will be constructed from the ID3-tags.
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*
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* This returns true if the save was successful.
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*/
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virtual bool save();
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/*!
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* Returns a pointer to the ID3v2 tag of the file.
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*
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* If \a create is false (the default) this returns a null pointer
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* if there is no valid ID3v2 tag. If \a create is true it will create
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* an ID3v2 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
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* file on disk has an ID3v2 tag. Use hasID3v2Tag() to check if the file
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* on disk actually has an ID3v2 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
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* deleted by the user. It will be deleted when the file (object) is
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* destroyed.
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*
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* \see hasID3v2Tag()
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*/
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ID3v2::Tag *ID3v2Tag(bool create = false);
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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
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* if there is no valid APE tag. If \a create is true it will create
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* 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
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* file on disk has an ID3v1 tag. Use hasID3v1Tag() to check if the file
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* 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
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* deleted by the user. It will be deleted when the file (object) is
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* 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 XiphComment for the file.
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*
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* If \a create is false (the default) this returns a null pointer
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* if there is no valid XiphComment. If \a create is true it will create
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* a XiphComment 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
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* file on disk has a XiphComment. Use hasXiphComment() to check if the
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* file on disk actually has a XiphComment.
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*
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* \note The Tag <b>is still</b> owned by the FLAC::File and should not be
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* deleted by the user. It will be deleted when the file (object) is
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* destroyed.
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*
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* \see hasXiphComment()
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*/
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Ogg::XiphComment *xiphComment(bool create = false);
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/*!
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* Set the ID3v2::FrameFactory to something other than the default. This
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* can be used to specify the way that ID3v2 frames will be interpreted
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* when
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*
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* \see ID3v2FrameFactory
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* \deprecated This value should be passed in via the constructor
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*/
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void setID3v2FrameFactory(const ID3v2::FrameFactory *factory);
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/*!
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* Returns the block of data used by FLAC::Properties for parsing the
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* stream properties.
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*
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* \deprecated Always returns an empty vector.
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*/
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ByteVector streamInfoData(); // BIC: remove
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/*!
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* Returns the length of the audio-stream, used by FLAC::Properties for
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* calculating the bitrate.
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*
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* \deprecated Always returns zero.
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*/
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long streamLength(); // BIC: remove
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/*!
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* Returns a list of pictures attached to the FLAC file.
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*/
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List<Picture *> pictureList();
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/*!
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* Removes an attached picture. If \a del is true the picture's memory
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* will be freed; if it is false, it must be deleted by the user.
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*/
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void removePicture(Picture *picture, bool del = true);
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/*!
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* Remove all attached images.
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*/
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void removePictures();
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/*!
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* Add a new picture to the file. The file takes ownership of the
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* picture and will handle freeing its memory.
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*
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* \note The file will be saved only after calling save().
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*/
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void addPicture(Picture *picture);
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/*!
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* This will remove the tags that match the OR-ed together TagTypes from
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* 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
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* will be freed.
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*
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* \note In order to make the removal permanent save() still needs to be
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* called.
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*
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* \note This won't remove the Vorbis comment block completely. The
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* vendor ID will be preserved.
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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 a XiphComment.
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*
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* \see xiphComment()
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*/
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bool hasXiphComment() const;
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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 ID3v2 tag.
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*
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* \see ID3v2Tag()
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*/
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bool hasID3v2Tag() const;
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/*!
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* Returns whether or not the given \a stream can be opened as a FLAC
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* file.
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*
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* \note This method is designed to do a quick check. The result may
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* 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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void scan();
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class FilePrivate;
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FilePrivate *d;
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};
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}
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}
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#endif
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