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strawberry-audio-player-win.../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 <tagutils.h>
#include "trueaudiofile.h"
#include "id3v1tag.h"
#include "id3v2tag.h"
#include "id3v2header.h"
using namespace Strawberry_TagLib::TagLib;
namespace {
enum {
TrueAudioID3v2Index = 0,
TrueAudioID3v1Index = 1
};
}
class TrueAudio::File::FilePrivate {
public:
explicit FilePrivate(const ID3v2::FrameFactory *frameFactory = ID3v2::FrameFactory::instance()) : ID3v2FrameFactory(frameFactory),
ID3v2Location(-1),
ID3v2OriginalSize(0),
ID3v1Location(-1),
properties(nullptr) {}
~FilePrivate() {
delete properties;
}
const ID3v2::FrameFactory *ID3v2FrameFactory;
long ID3v2Location;
long ID3v2OriginalSize;
long ID3v1Location;
TagUnion tag;
Properties *properties;
};
////////////////////////////////////////////////////////////////////////////////
// static members
////////////////////////////////////////////////////////////////////////////////
bool TrueAudio::File::isSupported(IOStream *stream) {
// A TrueAudio file has to start with "TTA". An ID3v2 tag may precede.
const ByteVector id = Utils::readHeader(stream, 3, true);
return (id == "TTA");
}
////////////////////////////////////////////////////////////////////////////////
// public members
////////////////////////////////////////////////////////////////////////////////
TrueAudio::File::File(FileName file, bool readProperties, Properties::ReadStyle) : Strawberry_TagLib::TagLib::File(file), d(new FilePrivate()) {
if (isOpen())
read(readProperties);
}
TrueAudio::File::File(FileName file, ID3v2::FrameFactory *frameFactory, bool readProperties, Properties::ReadStyle) : Strawberry_TagLib::TagLib::File(file), d(new FilePrivate(frameFactory)) {
if (isOpen())
read(readProperties);
}
TrueAudio::File::File(IOStream *stream, bool readProperties, Properties::ReadStyle) : Strawberry_TagLib::TagLib::File(stream), d(new FilePrivate()) {
if (isOpen())
read(readProperties);
}
TrueAudio::File::File(IOStream *stream, ID3v2::FrameFactory *frameFactory, bool readProperties, Properties::ReadStyle) : Strawberry_TagLib::TagLib::File(stream), d(new FilePrivate(frameFactory)) {
if (isOpen())
read(readProperties);
}
TrueAudio::File::~File() {
delete d;
}
Strawberry_TagLib::TagLib::Tag *TrueAudio::File::tag() const {
return &d->tag;
}
PropertyMap TrueAudio::File::properties() const {
return d->tag.properties();
}
void TrueAudio::File::removeUnsupportedProperties(const StringList &properties) {
d->tag.removeUnsupportedProperties(properties);
}
PropertyMap TrueAudio::File::setProperties(const PropertyMap &properties) {
if (ID3v1Tag())
ID3v1Tag()->setProperties(properties);
return ID3v2Tag(true)->setProperties(properties);
}
TrueAudio::Properties *TrueAudio::File::audioProperties() const {
return d->properties;
}
bool TrueAudio::File::save() {
if (readOnly()) {
debug("TrueAudio::File::save() -- File is read only.");
return false;
}
// Update ID3v2 tag
if (ID3v2Tag() && !ID3v2Tag()->isEmpty()) {
// ID3v2 tag is not empty. Update the old one or create a new one.
if (d->ID3v2Location < 0)
d->ID3v2Location = 0;
const ByteVector data = ID3v2Tag()->render();
insert(data, d->ID3v2Location, d->ID3v2OriginalSize);
if (d->ID3v1Location >= 0)
d->ID3v1Location += (static_cast<long>(data.size()) - d->ID3v2OriginalSize);
d->ID3v2OriginalSize = data.size();
}
else {
// ID3v2 tag is empty. Remove the old one.
if (d->ID3v2Location >= 0) {
removeBlock(d->ID3v2Location, d->ID3v2OriginalSize);
if (d->ID3v1Location >= 0)
d->ID3v1Location -= d->ID3v2OriginalSize;
d->ID3v2Location = -1;
d->ID3v2OriginalSize = 0;
}
}
// Update ID3v1 tag
if (ID3v1Tag() && !ID3v1Tag()->isEmpty()) {
// ID3v1 tag is not empty. Update the old one or create a new one.
if (d->ID3v1Location >= 0) {
seek(d->ID3v1Location);
}
else {
seek(0, End);
d->ID3v1Location = tell();
}
writeBlock(ID3v1Tag()->render());
}
else {
// ID3v1 tag is empty. Remove the old one.
if (d->ID3v1Location >= 0) {
truncate(d->ID3v1Location);
d->ID3v1Location = -1;
}
}
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, nullptr);
if (tags & ID3v2)
d->tag.set(TrueAudioID3v2Index, nullptr);
if (!ID3v1Tag())
ID3v2Tag(true);
}
bool TrueAudio::File::hasID3v1Tag() const {
return (d->ID3v1Location >= 0);
}
bool TrueAudio::File::hasID3v2Tag() const {
return (d->ID3v2Location >= 0);
}
////////////////////////////////////////////////////////////////////////////////
// private members
////////////////////////////////////////////////////////////////////////////////
void TrueAudio::File::read(bool readProperties) {
// Look for an ID3v2 tag
d->ID3v2Location = Utils::findID3v2(this);
if (d->ID3v2Location >= 0) {
d->tag.set(TrueAudioID3v2Index, new ID3v2::Tag(this, d->ID3v2Location, d->ID3v2FrameFactory));
d->ID3v2OriginalSize = ID3v2Tag()->header()->completeTagSize();
}
// Look for an ID3v1 tag
d->ID3v1Location = Utils::findID3v1(this);
if (d->ID3v1Location >= 0)
d->tag.set(TrueAudioID3v1Index, new ID3v1::Tag(this, d->ID3v1Location));
if (d->ID3v1Location < 0)
ID3v2Tag(true);
// Look for TrueAudio metadata
if (readProperties) {
long streamLength;
if (d->ID3v1Location >= 0)
streamLength = d->ID3v1Location;
else
streamLength = length();
if (d->ID3v2Location >= 0) {
seek(d->ID3v2Location + d->ID3v2OriginalSize);
streamLength -= (d->ID3v2Location + d->ID3v2OriginalSize);
}
else {
seek(0);
}
d->properties = new Properties(readBlock(TrueAudio::HeaderSize), streamLength);
}
}
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