352 lines
8.1 KiB
C++
352 lines
8.1 KiB
C++
/**************************************************************************
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copyright : (C) 2005-2007 by Lukáš Lalinský
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email : lalinsky@gmail.com
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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 <taglib.h>
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#include <tdebug.h>
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#include <trefcounter.h>
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#include "asfattribute.h"
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#include "asffile.h"
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#include "asfutils.h"
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using namespace TagLib;
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class ASF::Attribute::AttributePrivate : public RefCounter
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{
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public:
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AttributePrivate() :
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pictureValue(ASF::Picture::fromInvalid()),
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numericValue(0),
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stream(0),
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language(0) {}
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AttributeTypes type;
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String stringValue;
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ByteVector byteVectorValue;
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ASF::Picture pictureValue;
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unsigned long long numericValue;
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int stream;
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int language;
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};
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////////////////////////////////////////////////////////////////////////////////
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// public members
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////////////////////////////////////////////////////////////////////////////////
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ASF::Attribute::Attribute() :
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d(new AttributePrivate())
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{
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d->type = UnicodeType;
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}
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ASF::Attribute::Attribute(const ASF::Attribute &other) :
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d(other.d)
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{
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d->ref();
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}
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ASF::Attribute::Attribute(const String &value) :
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d(new AttributePrivate())
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{
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d->type = UnicodeType;
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d->stringValue = value;
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}
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ASF::Attribute::Attribute(const ByteVector &value) :
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d(new AttributePrivate())
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{
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d->type = BytesType;
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d->byteVectorValue = value;
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}
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ASF::Attribute::Attribute(const ASF::Picture &value) :
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d(new AttributePrivate())
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{
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d->type = BytesType;
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d->pictureValue = value;
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}
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ASF::Attribute::Attribute(unsigned int value) :
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d(new AttributePrivate())
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{
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d->type = DWordType;
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d->numericValue = value;
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}
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ASF::Attribute::Attribute(unsigned long long value) :
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d(new AttributePrivate())
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{
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d->type = QWordType;
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d->numericValue = value;
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}
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ASF::Attribute::Attribute(unsigned short value) :
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d(new AttributePrivate())
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{
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d->type = WordType;
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d->numericValue = value;
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}
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ASF::Attribute::Attribute(bool value) :
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d(new AttributePrivate())
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{
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d->type = BoolType;
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d->numericValue = value;
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}
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ASF::Attribute &ASF::Attribute::operator=(const ASF::Attribute &other)
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{
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Attribute(other).swap(*this);
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return *this;
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}
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void ASF::Attribute::swap(Attribute &other)
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{
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using std::swap;
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swap(d, other.d);
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}
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ASF::Attribute::~Attribute()
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{
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if(d->deref())
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delete d;
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}
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ASF::Attribute::AttributeTypes ASF::Attribute::type() const
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{
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return d->type;
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}
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String ASF::Attribute::toString() const
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{
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return d->stringValue;
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}
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ByteVector ASF::Attribute::toByteVector() const
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{
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if(d->pictureValue.isValid())
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return d->pictureValue.render();
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return d->byteVectorValue;
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}
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unsigned short ASF::Attribute::toBool() const
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{
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return d->numericValue ? 1 : 0;
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}
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unsigned short ASF::Attribute::toUShort() const
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{
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return static_cast<unsigned short>(d->numericValue);
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}
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unsigned int ASF::Attribute::toUInt() const
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{
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return static_cast<unsigned int>(d->numericValue);
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}
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unsigned long long ASF::Attribute::toULongLong() const
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{
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return static_cast<unsigned long long>(d->numericValue);
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}
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ASF::Picture ASF::Attribute::toPicture() const
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{
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return d->pictureValue;
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}
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String ASF::Attribute::parse(ASF::File &f, int kind)
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{
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unsigned int size, nameLength;
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String name;
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d->pictureValue = Picture::fromInvalid();
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// extended content descriptor
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if(kind == 0) {
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nameLength = readWORD(&f);
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name = readString(&f, nameLength);
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d->type = ASF::Attribute::AttributeTypes(readWORD(&f));
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size = readWORD(&f);
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}
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// metadata & metadata library
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else {
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int temp = readWORD(&f);
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// metadata library
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if(kind == 2) {
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d->language = temp;
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}
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d->stream = readWORD(&f);
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nameLength = readWORD(&f);
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d->type = ASF::Attribute::AttributeTypes(readWORD(&f));
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size = readDWORD(&f);
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name = readString(&f, nameLength);
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}
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if(kind != 2 && size > 65535) {
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debug("ASF::Attribute::parse() -- Value larger than 64kB");
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}
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switch(d->type) {
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case WordType:
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d->numericValue = readWORD(&f);
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break;
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case BoolType:
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if(kind == 0) {
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d->numericValue = (readDWORD(&f) != 0);
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}
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else {
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d->numericValue = (readWORD(&f) != 0);
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}
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break;
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case DWordType:
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d->numericValue = readDWORD(&f);
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break;
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case QWordType:
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d->numericValue = readQWORD(&f);
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break;
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case UnicodeType:
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d->stringValue = readString(&f, size);
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break;
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case BytesType:
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case GuidType:
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d->byteVectorValue = f.readBlock(size);
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break;
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}
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if(d->type == BytesType && name == "WM/Picture") {
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d->pictureValue.parse(d->byteVectorValue);
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if(d->pictureValue.isValid()) {
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d->byteVectorValue.clear();
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}
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}
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return name;
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}
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int ASF::Attribute::dataSize() const
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{
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switch (d->type) {
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case WordType:
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return 2;
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case BoolType:
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return 4;
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case DWordType:
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return 4;
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case QWordType:
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return 5;
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case UnicodeType:
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return d->stringValue.size() * 2 + 2;
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case BytesType:
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if(d->pictureValue.isValid())
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return d->pictureValue.dataSize();
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case GuidType:
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return d->byteVectorValue.size();
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}
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return 0;
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}
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ByteVector ASF::Attribute::render(const String &name, int kind) const
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{
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ByteVector data;
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switch (d->type) {
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case WordType:
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data.append(ByteVector::fromShort(toUShort(), false));
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break;
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case BoolType:
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if(kind == 0) {
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data.append(ByteVector::fromUInt(toBool(), false));
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}
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else {
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data.append(ByteVector::fromShort(toBool(), false));
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}
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break;
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case DWordType:
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data.append(ByteVector::fromUInt(toUInt(), false));
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break;
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case QWordType:
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data.append(ByteVector::fromLongLong(toULongLong(), false));
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break;
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case UnicodeType:
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data.append(renderString(d->stringValue));
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break;
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case BytesType:
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if(d->pictureValue.isValid()) {
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data.append(d->pictureValue.render());
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break;
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}
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case GuidType:
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data.append(d->byteVectorValue);
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break;
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}
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if(kind == 0) {
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data = renderString(name, true) +
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ByteVector::fromShort((int)d->type, false) +
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ByteVector::fromShort(data.size(), false) +
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data;
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}
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else {
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ByteVector nameData = renderString(name);
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data = ByteVector::fromShort(kind == 2 ? d->language : 0, false) +
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ByteVector::fromShort(d->stream, false) +
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ByteVector::fromShort(nameData.size(), false) +
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ByteVector::fromShort((int)d->type, false) +
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ByteVector::fromUInt(data.size(), false) +
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nameData +
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data;
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}
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return data;
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}
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int ASF::Attribute::language() const
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{
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return d->language;
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}
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void ASF::Attribute::setLanguage(int value)
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{
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d->language = value;
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}
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int ASF::Attribute::stream() const
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{
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return d->stream;
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}
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void ASF::Attribute::setStream(int value)
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{
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d->stream = value;
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}
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