311 lines
7.9 KiB
C++
311 lines
7.9 KiB
C++
/***************************************************************************
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copyright : (C) 2006 by Lukáš Lalinský
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email : lalinsky@gmail.com
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copyright : (C) 2004 by Allan Sandfeld Jensen
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email : kde@carewolf.org
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(original MPC implementation)
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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 <tbytevector.h>
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#include <tstring.h>
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#include <tdebug.h>
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#include <tagunion.h>
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#include <tstringlist.h>
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#include <tpropertymap.h>
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#include <tagutils.h>
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#include "trueaudiofile.h"
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#include "id3v1tag.h"
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#include "id3v2tag.h"
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#include "id3v2header.h"
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using namespace TagLib;
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namespace
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{
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enum { TrueAudioID3v2Index = 0, TrueAudioID3v1Index = 1 };
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}
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class TrueAudio::File::FilePrivate
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{
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public:
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FilePrivate(const ID3v2::FrameFactory *frameFactory = ID3v2::FrameFactory::instance()) :
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ID3v2FrameFactory(frameFactory),
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ID3v2Location(-1),
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ID3v2OriginalSize(0),
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ID3v1Location(-1),
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properties(0) {}
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~FilePrivate()
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{
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delete properties;
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}
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const ID3v2::FrameFactory *ID3v2FrameFactory;
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long ID3v2Location;
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long ID3v2OriginalSize;
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long ID3v1Location;
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TagUnion tag;
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Properties *properties;
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};
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////////////////////////////////////////////////////////////////////////////////
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// static members
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////////////////////////////////////////////////////////////////////////////////
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bool TrueAudio::File::isSupported(IOStream *stream)
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{
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// A TrueAudio file has to start with "TTA". An ID3v2 tag may precede.
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const ByteVector id = Utils::readHeader(stream, 3, true);
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return (id == "TTA");
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}
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////////////////////////////////////////////////////////////////////////////////
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// public members
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////////////////////////////////////////////////////////////////////////////////
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TrueAudio::File::File(FileName file, bool readProperties, Properties::ReadStyle) :
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TagLib::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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TrueAudio::File::File(FileName file, ID3v2::FrameFactory *frameFactory,
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bool readProperties, Properties::ReadStyle) :
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TagLib::File(file),
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d(new FilePrivate(frameFactory))
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{
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if(isOpen())
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read(readProperties);
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}
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TrueAudio::File::File(IOStream *stream, bool readProperties, Properties::ReadStyle) :
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TagLib::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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TrueAudio::File::File(IOStream *stream, ID3v2::FrameFactory *frameFactory,
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bool readProperties, Properties::ReadStyle) :
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TagLib::File(stream),
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d(new FilePrivate(frameFactory))
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{
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if(isOpen())
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read(readProperties);
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}
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TrueAudio::File::~File()
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{
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delete d;
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}
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TagLib::Tag *TrueAudio::File::tag() const
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{
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return &d->tag;
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}
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PropertyMap TrueAudio::File::properties() const
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{
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return d->tag.properties();
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}
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void TrueAudio::File::removeUnsupportedProperties(const StringList &unsupported)
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{
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d->tag.removeUnsupportedProperties(unsupported);
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}
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PropertyMap TrueAudio::File::setProperties(const PropertyMap &properties)
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{
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if(ID3v1Tag())
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ID3v1Tag()->setProperties(properties);
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return ID3v2Tag(true)->setProperties(properties);
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}
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TrueAudio::Properties *TrueAudio::File::audioProperties() const
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{
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return d->properties;
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}
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void TrueAudio::File::setID3v2FrameFactory(const ID3v2::FrameFactory *factory)
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{
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d->ID3v2FrameFactory = factory;
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}
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bool TrueAudio::File::save()
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{
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if(readOnly()) {
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debug("TrueAudio::File::save() -- File is read only.");
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return false;
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}
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// Update ID3v2 tag
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if(ID3v2Tag() && !ID3v2Tag()->isEmpty()) {
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// ID3v2 tag is not empty. Update the old one or create a new one.
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if(d->ID3v2Location < 0)
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d->ID3v2Location = 0;
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const ByteVector data = ID3v2Tag()->render();
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insert(data, d->ID3v2Location, d->ID3v2OriginalSize);
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if(d->ID3v1Location >= 0)
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d->ID3v1Location += (static_cast<long>(data.size()) - d->ID3v2OriginalSize);
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d->ID3v2OriginalSize = data.size();
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}
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else {
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// ID3v2 tag is empty. Remove the old one.
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if(d->ID3v2Location >= 0) {
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removeBlock(d->ID3v2Location, d->ID3v2OriginalSize);
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if(d->ID3v1Location >= 0)
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d->ID3v1Location -= d->ID3v2OriginalSize;
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d->ID3v2Location = -1;
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d->ID3v2OriginalSize = 0;
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}
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}
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// Update ID3v1 tag
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if(ID3v1Tag() && !ID3v1Tag()->isEmpty()) {
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// ID3v1 tag is not empty. Update the old one or create a new one.
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if(d->ID3v1Location >= 0) {
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seek(d->ID3v1Location);
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}
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else {
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seek(0, End);
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d->ID3v1Location = tell();
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}
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writeBlock(ID3v1Tag()->render());
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}
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else {
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// ID3v1 tag is empty. Remove the old one.
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if(d->ID3v1Location >= 0) {
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truncate(d->ID3v1Location);
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d->ID3v1Location = -1;
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}
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}
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return true;
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}
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ID3v1::Tag *TrueAudio::File::ID3v1Tag(bool create)
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{
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return d->tag.access<ID3v1::Tag>(TrueAudioID3v1Index, create);
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}
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ID3v2::Tag *TrueAudio::File::ID3v2Tag(bool create)
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{
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return d->tag.access<ID3v2::Tag>(TrueAudioID3v2Index, create);
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}
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void TrueAudio::File::strip(int tags)
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{
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if(tags & ID3v1)
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d->tag.set(TrueAudioID3v1Index, 0);
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if(tags & ID3v2)
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d->tag.set(TrueAudioID3v2Index, 0);
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if(!ID3v1Tag())
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ID3v2Tag(true);
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}
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bool TrueAudio::File::hasID3v1Tag() const
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{
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return (d->ID3v1Location >= 0);
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}
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bool TrueAudio::File::hasID3v2Tag() const
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{
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return (d->ID3v2Location >= 0);
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}
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////////////////////////////////////////////////////////////////////////////////
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// private members
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////////////////////////////////////////////////////////////////////////////////
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void TrueAudio::File::read(bool readProperties)
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{
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// Look for an ID3v2 tag
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d->ID3v2Location = Utils::findID3v2(this);
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if(d->ID3v2Location >= 0) {
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d->tag.set(TrueAudioID3v2Index, new ID3v2::Tag(this, d->ID3v2Location, d->ID3v2FrameFactory));
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d->ID3v2OriginalSize = ID3v2Tag()->header()->completeTagSize();
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}
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// Look for an ID3v1 tag
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d->ID3v1Location = Utils::findID3v1(this);
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if(d->ID3v1Location >= 0)
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d->tag.set(TrueAudioID3v1Index, new ID3v1::Tag(this, d->ID3v1Location));
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if(d->ID3v1Location < 0)
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ID3v2Tag(true);
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// Look for TrueAudio metadata
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if(readProperties) {
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long streamLength;
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if(d->ID3v1Location >= 0)
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streamLength = d->ID3v1Location;
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else
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streamLength = length();
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if(d->ID3v2Location >= 0) {
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seek(d->ID3v2Location + d->ID3v2OriginalSize);
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streamLength -= (d->ID3v2Location + d->ID3v2OriginalSize);
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}
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else {
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seek(0);
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}
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d->properties = new Properties(readBlock(TrueAudio::HeaderSize), streamLength);
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}
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}
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