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Clementine-audio-player-Mac.../3rdparty/taglib/trueaudio/trueaudiofile.cpp

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/***************************************************************************
copyright : (C) 2006 by Lukáš Lalinský
email : lalinsky@gmail.com
copyright : (C) 2004 by Allan Sandfeld Jensen
email : kde@carewolf.org
(original MPC implementation)
***************************************************************************/
/***************************************************************************
* 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 <tbytevector.h>
#include <tstring.h>
#include <tdebug.h>
#include <tagunion.h>
#include <tstringlist.h>
#include <tpropertymap.h>
#include "trueaudiofile.h"
#include "id3v1tag.h"
#include "id3v2tag.h"
#include "id3v2header.h"
using namespace TagLib;
namespace
{
enum { TrueAudioID3v2Index = 0, TrueAudioID3v1Index = 1 };
}
class TrueAudio::File::FilePrivate
{
public:
FilePrivate(const ID3v2::FrameFactory *frameFactory = ID3v2::FrameFactory::instance()) :
ID3v2FrameFactory(frameFactory),
ID3v2Location(-1),
ID3v2OriginalSize(0),
ID3v1Location(-1),
properties(0),
hasID3v1(false),
hasID3v2(false) {}
~FilePrivate()
{
delete properties;
}
const ID3v2::FrameFactory *ID3v2FrameFactory;
long ID3v2Location;
uint ID3v2OriginalSize;
long ID3v1Location;
TagUnion tag;
Properties *properties;
// These indicate whether the file *on disk* has these tags, not if
// this data structure does. This is used in computing offsets.
bool hasID3v1;
bool hasID3v2;
};
////////////////////////////////////////////////////////////////////////////////
// public members
////////////////////////////////////////////////////////////////////////////////
TrueAudio::File::File(FileName file, bool readProperties,
Properties::ReadStyle propertiesStyle) : TagLib::File(file)
{
d = new FilePrivate;
if(isOpen())
read(readProperties, propertiesStyle);
}
TrueAudio::File::File(FileName file, ID3v2::FrameFactory *frameFactory,
bool readProperties, Properties::ReadStyle propertiesStyle) :
TagLib::File(file)
{
d = new FilePrivate(frameFactory);
if(isOpen())
read(readProperties, propertiesStyle);
}
TrueAudio::File::File(IOStream *stream, bool readProperties,
Properties::ReadStyle propertiesStyle) : TagLib::File(stream)
{
d = new FilePrivate;
if(isOpen())
read(readProperties, propertiesStyle);
}
TrueAudio::File::File(IOStream *stream, ID3v2::FrameFactory *frameFactory,
bool readProperties, Properties::ReadStyle propertiesStyle) :
TagLib::File(stream)
{
d = new FilePrivate(frameFactory);
if(isOpen())
read(readProperties, propertiesStyle);
}
TrueAudio::File::~File()
{
delete d;
}
TagLib::Tag *TrueAudio::File::tag() const
{
return &d->tag;
}
PropertyMap TrueAudio::File::properties() const
{
// once Tag::properties() is virtual, this case distinction could actually be done
// within TagUnion.
if(d->hasID3v2)
return d->tag.access<ID3v2::Tag>(TrueAudioID3v2Index, false)->properties();
if(d->hasID3v1)
return d->tag.access<ID3v1::Tag>(TrueAudioID3v1Index, false)->properties();
return PropertyMap();
}
PropertyMap TrueAudio::File::setProperties(const PropertyMap &properties)
{
if(d->hasID3v2)
return d->tag.access<ID3v2::Tag>(TrueAudioID3v2Index, false)->setProperties(properties);
else if(d->hasID3v1)
return d->tag.access<ID3v1::Tag>(TrueAudioID3v1Index, false)->setProperties(properties);
else
return d->tag.access<ID3v2::Tag>(TrueAudioID3v2Index, true)->setProperties(properties);
}
TrueAudio::Properties *TrueAudio::File::audioProperties() const
{
return d->properties;
}
void TrueAudio::File::setID3v2FrameFactory(const ID3v2::FrameFactory *factory)
{
d->ID3v2FrameFactory = factory;
}
bool TrueAudio::File::save()
{
if(readOnly()) {
debug("TrueAudio::File::save() -- File is read only.");
return false;
}
// Update ID3v2 tag
if(ID3v2Tag() && !ID3v2Tag()->isEmpty()) {
if(!d->hasID3v2) {
d->ID3v2Location = 0;
d->ID3v2OriginalSize = 0;
}
ByteVector data = ID3v2Tag()->render();
insert(data, d->ID3v2Location, d->ID3v2OriginalSize);
d->ID3v1Location -= d->ID3v2OriginalSize - data.size();
d->ID3v2OriginalSize = data.size();
d->hasID3v2 = true;
}
else if(d->hasID3v2) {
removeBlock(d->ID3v2Location, d->ID3v2OriginalSize);
d->ID3v1Location -= d->ID3v2OriginalSize;
d->ID3v2Location = -1;
d->ID3v2OriginalSize = 0;
d->hasID3v2 = false;
}
// Update ID3v1 tag
if(ID3v1Tag() && !ID3v1Tag()->isEmpty()) {
if(!d->hasID3v1) {
seek(0, End);
d->ID3v1Location = tell();
}
else
seek(d->ID3v1Location);
writeBlock(ID3v1Tag()->render());
d->hasID3v1 = true;
}
else if(d->hasID3v1) {
removeBlock(d->ID3v1Location, 128);
d->ID3v1Location = -1;
d->hasID3v1 = false;
}
return true;
}
ID3v1::Tag *TrueAudio::File::ID3v1Tag(bool create)
{
return d->tag.access<ID3v1::Tag>(TrueAudioID3v1Index, create);
}
ID3v2::Tag *TrueAudio::File::ID3v2Tag(bool create)
{
return d->tag.access<ID3v2::Tag>(TrueAudioID3v2Index, create);
}
void TrueAudio::File::strip(int tags)
{
if(tags & ID3v1) {
d->tag.set(TrueAudioID3v1Index, 0);
ID3v2Tag(true);
}
if(tags & ID3v2) {
d->tag.set(TrueAudioID3v2Index, 0);
if(!ID3v1Tag())
ID3v2Tag(true);
}
}
////////////////////////////////////////////////////////////////////////////////
// private members
////////////////////////////////////////////////////////////////////////////////
void TrueAudio::File::read(bool readProperties, Properties::ReadStyle /* propertiesStyle */)
{
// Look for an ID3v2 tag
d->ID3v2Location = findID3v2();
if(d->ID3v2Location >= 0) {
d->tag.set(TrueAudioID3v2Index, new ID3v2::Tag(this, d->ID3v2Location, d->ID3v2FrameFactory));
d->ID3v2OriginalSize = ID3v2Tag()->header()->completeTagSize();
if(ID3v2Tag()->header()->tagSize() <= 0)
d->tag.set(TrueAudioID3v2Index, 0);
else
d->hasID3v2 = true;
}
// Look for an ID3v1 tag
d->ID3v1Location = findID3v1();
if(d->ID3v1Location >= 0) {
d->tag.set(TrueAudioID3v1Index, new ID3v1::Tag(this, d->ID3v1Location));
d->hasID3v1 = true;
}
if(!d->hasID3v1)
ID3v2Tag(true);
// Look for TrueAudio metadata
if(readProperties) {
if(d->ID3v2Location >= 0) {
seek(d->ID3v2Location + d->ID3v2OriginalSize);
d->properties = new Properties(readBlock(TrueAudio::HeaderSize),
length() - d->ID3v2OriginalSize);
}
else {
seek(0);
d->properties = new Properties(readBlock(TrueAudio::HeaderSize),
length());
}
}
}
long TrueAudio::File::findID3v1()
{
if(!isValid())
return -1;
seek(-128, End);
long p = tell();
if(readBlock(3) == ID3v1::Tag::fileIdentifier())
return p;
return -1;
}
long TrueAudio::File::findID3v2()
{
if(!isValid())
return -1;
seek(0);
if(readBlock(3) == ID3v2::Header::fileIdentifier())
return 0;
return -1;
}
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