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/***************************************************************************
copyright : (C) 2002 - 2008 by Scott Wheeler
email : wheeler@kde.org
***************************************************************************/
/***************************************************************************
* 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 "attachedpictureframe.h"
#include <tstringlist.h>
#include <tdebug.h>
using namespace TagLib;
using namespace ID3v2;
class AttachedPictureFrame::AttachedPictureFramePrivate
{
public:
AttachedPictureFramePrivate() : textEncoding(String::Latin1),
type(AttachedPictureFrame::Other) {}
String::Type textEncoding;
String mimeType;
AttachedPictureFrame::Type type;
String description;
ByteVector data;
};
////////////////////////////////////////////////////////////////////////////////
// public members
////////////////////////////////////////////////////////////////////////////////
AttachedPictureFrame::AttachedPictureFrame() : Frame("APIC")
{
d = new AttachedPictureFramePrivate;
}
AttachedPictureFrame::AttachedPictureFrame(const ByteVector &data) : Frame(data)
{
d = new AttachedPictureFramePrivate;
setData(data);
}
AttachedPictureFrame::~AttachedPictureFrame()
{
delete d;
}
String AttachedPictureFrame::toString() const
{
String s = "[" + d->mimeType + "]";
return d->description.isEmpty() ? s : d->description + " " + s;
}
String::Type AttachedPictureFrame::textEncoding() const
{
return d->textEncoding;
}
void AttachedPictureFrame::setTextEncoding(String::Type t)
{
d->textEncoding = t;
}
String AttachedPictureFrame::mimeType() const
{
return d->mimeType;
}
void AttachedPictureFrame::setMimeType(const String &m)
{
d->mimeType = m;
}
AttachedPictureFrame::Type AttachedPictureFrame::type() const
{
return d->type;
}
void AttachedPictureFrame::setType(Type t)
{
d->type = t;
}
String AttachedPictureFrame::description() const
{
return d->description;
}
void AttachedPictureFrame::setDescription(const String &desc)
{
d->description = desc;
}
ByteVector AttachedPictureFrame::picture() const
{
return d->data;
}
void AttachedPictureFrame::setPicture(const ByteVector &p)
{
d->data = p;
}
////////////////////////////////////////////////////////////////////////////////
// protected members
////////////////////////////////////////////////////////////////////////////////
void AttachedPictureFrame::parseFields(const ByteVector &data)
{
if(data.size() < 5) {
debug("A picture frame must contain at least 5 bytes.");
return;
}
d->textEncoding = String::Type(data[0]);
int pos = 1;
d->mimeType = readStringField(data, String::Latin1, &pos);
/* Now we need at least two more bytes available */
if (uint(pos) + 1 >= data.size()) {
debug("Truncated picture frame.");
return;
}
d->type = (TagLib::ID3v2::AttachedPictureFrame::Type)data[pos++];
d->description = readStringField(data, d->textEncoding, &pos);
d->data = data.mid(pos);
}
ByteVector AttachedPictureFrame::renderFields() const
{
ByteVector data;
String::Type encoding = checkTextEncoding(d->description, d->textEncoding);
data.append(char(encoding));
data.append(d->mimeType.data(String::Latin1));
data.append(textDelimiter(String::Latin1));
data.append(char(d->type));
data.append(d->description.data(encoding));
data.append(textDelimiter(encoding));
data.append(d->data);
return data;
}
////////////////////////////////////////////////////////////////////////////////
// private members
////////////////////////////////////////////////////////////////////////////////
AttachedPictureFrame::AttachedPictureFrame(const ByteVector &data, Header *h) : Frame(h)
{
d = new AttachedPictureFramePrivate;
parseFields(fieldData(data));
}
////////////////////////////////////////////////////////////////////////////////
// support for ID3v2.2 PIC frames
////////////////////////////////////////////////////////////////////////////////
void AttachedPictureFrameV22::parseFields(const ByteVector &data)
{
if(data.size() < 5) {
debug("A picture frame must contain at least 5 bytes.");
return;
}
d->textEncoding = String::Type(data[0]);
int pos = 1;
String fixedString = String(data.mid(pos, 3), String::Latin1);
pos += 3;
// convert fixed string image type to mime string
if (fixedString.upper() == "JPG") {
d->mimeType = "image/jpeg";
} else if (fixedString.upper() == "PNG") {
d->mimeType = "image/png";
} else {
debug("probably unsupported image type");
d->mimeType = "image/" + fixedString;
}
d->type = (TagLib::ID3v2::AttachedPictureFrame::Type)data[pos++];
d->description = readStringField(data, d->textEncoding, &pos);
d->data = data.mid(pos);
}
AttachedPictureFrameV22::AttachedPictureFrameV22(const ByteVector &data, Header *h)
{
// set v2.2 header to make fieldData work correctly
setHeader(h, true);
parseFields(fieldData(data));
// now set the v2.4 header
Frame::Header *newHeader = new Frame::Header("APIC");
newHeader->setFrameSize(h->frameSize());
setHeader(newHeader, true);
}
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