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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 *
***************************************************************************/
#include <tbytevector.h>
#include <tstring.h>
#if 0
#include <tdebug.h>
#endif
#include "wvfile.h"
#include "id3v1tag.h"
#include "id3v2header.h"
#include "apetag.h"
#include "apefooter.h"
#include "combinedtag.h"
using namespace TagLib;
class WavPack::File::FilePrivate
{
public:
FilePrivate() :
APETag(0),
APELocation(-1),
APESize(0),
ID3v1Tag(0),
ID3v1Location(-1),
tag(0),
properties(0),
scanned(false),
hasAPE(false),
hasID3v1(false) {}
~FilePrivate()
{
if (tag != ID3v1Tag && tag != APETag) delete tag;
delete ID3v1Tag;
delete APETag;
delete properties;
}
APE::Tag *APETag;
long APELocation;
uint APESize;
ID3v1::Tag *ID3v1Tag;
long ID3v1Location;
Tag *tag;
Properties *properties;
bool scanned;
// These indicate whether the file *on disk* has these tags, not if
// this data structure does. This is used in computing offsets.
bool hasAPE;
bool hasID3v1;
};
////////////////////////////////////////////////////////////////////////////////
// public members
////////////////////////////////////////////////////////////////////////////////
WavPack::File::File(const char *file, bool readProperties,
Properties::ReadStyle propertiesStyle) : TagLib::File(file)
{
d = new FilePrivate;
read(readProperties, propertiesStyle);
}
WavPack::File::~File()
{
delete d;
}
TagLib::Tag *WavPack::File::tag() const
{
return d->tag;
}
WavPack::Properties *WavPack::File::audioProperties() const
{
return d->properties;
}
bool WavPack::File::save()
{
if(readOnly()) {
#if 0
debug("WavPack::File::save() -- File is read only.");
#endif
return false;
}
// Update ID3v1 tag
if(d->ID3v1Tag) {
if(d->hasID3v1) {
seek(d->ID3v1Location);
writeBlock(d->ID3v1Tag->render());
}
else {
seek(0, End);
d->ID3v1Location = tell();
writeBlock(d->ID3v1Tag->render());
d->hasID3v1 = true;
}
} else
if(d->hasID3v1) {
removeBlock(d->ID3v1Location, 128);
d->hasID3v1 = false;
if(d->hasAPE) {
if(d->APELocation > d->ID3v1Location)
d->APELocation -= 128;
}
}
// Update APE tag
if(d->APETag) {
if(d->hasAPE)
insert(d->APETag->render(), d->APELocation, d->APESize);
else {
if(d->hasID3v1) {
insert(d->APETag->render(), d->ID3v1Location, 0);
d->APESize = d->APETag->footer()->completeTagSize();
d->hasAPE = true;
d->APELocation = d->ID3v1Location;
d->ID3v1Location += d->APESize;
}
else {
seek(0, End);
d->APELocation = tell();
writeBlock(d->APETag->render());
d->APESize = d->APETag->footer()->completeTagSize();
d->hasAPE = true;
}
}
}
else
if(d->hasAPE) {
removeBlock(d->APELocation, d->APESize);
d->hasAPE = false;
if(d->hasID3v1) {
if (d->ID3v1Location > d->APELocation)
d->ID3v1Location -= d->APESize;
}
}
return true;
}
ID3v1::Tag *WavPack::File::ID3v1Tag(bool create)
{
if(!create || d->ID3v1Tag)
return d->ID3v1Tag;
// no ID3v1 tag exists and we've been asked to create one
d->ID3v1Tag = new ID3v1::Tag;
if(d->APETag)
d->tag = new CombinedTag(d->APETag, d->ID3v1Tag);
else
d->tag = d->ID3v1Tag;
return d->ID3v1Tag;
}
APE::Tag *WavPack::File::APETag(bool create)
{
if(!create || d->APETag)
return d->APETag;
// no APE tag exists and we've been asked to create one
d->APETag = new APE::Tag;
if(d->ID3v1Tag)
d->tag = new CombinedTag(d->APETag, d->ID3v1Tag);
else
d->tag = d->APETag;
return d->APETag;
}
void WavPack::File::remove(int tags)
{
if(tags & ID3v1) {
delete d->ID3v1Tag;
d->ID3v1Tag = 0;
if(d->APETag)
d->tag = d->APETag;
else
d->tag = d->APETag = new APE::Tag;
}
if(tags & APE) {
delete d->APETag;
d->APETag = 0;
if(d->ID3v1Tag)
d->tag = d->ID3v1Tag;
else
d->tag = d->APETag = new APE::Tag;
}
}
////////////////////////////////////////////////////////////////////////////////
// private members
////////////////////////////////////////////////////////////////////////////////
void WavPack::File::read(bool readProperties, Properties::ReadStyle /* propertiesStyle */)
{
// Look for an ID3v1 tag
d->ID3v1Location = findID3v1();
if(d->ID3v1Location >= 0) {
d->ID3v1Tag = new ID3v1::Tag(this, d->ID3v1Location);
d->hasID3v1 = true;
}
// Look for an APE tag
d->APELocation = findAPE();
if(d->APELocation >= 0) {
d->APETag = new APE::Tag(this, d->APELocation);
d->APESize = d->APETag->footer()->completeTagSize();
d->APELocation = d->APELocation + d->APETag->footer()->size() - d->APESize;
d->hasAPE = true;
}
if(d->hasID3v1 && d->hasAPE)
d->tag = new CombinedTag(d->APETag, d->ID3v1Tag);
else {
if(d->hasID3v1)
d->tag = d->ID3v1Tag;
else {
if(d->hasAPE)
d->tag = d->APETag;
else
d->tag = d->APETag = new APE::Tag;
}
}
// Look for WavPack audio properties
if(readProperties) {
seek(0);
d->properties = new Properties(readBlock(WavPack::HeaderSize),
length() - d->APESize);
}
}
long WavPack::File::findAPE()
{
if(!isValid())
return -1;
if(d->hasID3v1)
seek(-160, End);
else
seek(-32, End);
long p = tell();
if(readBlock(8) == APE::Tag::fileIdentifier())
return p;
return -1;
}
long WavPack::File::findID3v1()
{
if(!isValid())
return -1;
seek(-128, End);
long p = tell();
if(readBlock(3) == ID3v1::Tag::fileIdentifier())
return p;
return -1;
}
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