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548 lines
15 KiB
548 lines
15 KiB
/**************************************************************************
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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 02110-1301 *
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* USA *
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***************************************************************************/
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#include <tbytevectorlist.h>
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#include <tstring.h>
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#include "asffile.h"
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#include "asftag.h"
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#include "asfproperties.h"
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using namespace TagLib;
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class ASF::File::FilePrivate
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{
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public:
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FilePrivate():
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size(0),
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tag(0),
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properties(0),
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contentDescriptionObject(0),
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extendedContentDescriptionObject(0),
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headerExtensionObject(0),
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metadataObject(0),
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metadataLibraryObject(0) {}
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unsigned long long size;
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ASF::Tag *tag;
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ASF::Properties *properties;
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List<ASF::File::BaseObject *> objects;
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ASF::File::ContentDescriptionObject *contentDescriptionObject;
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ASF::File::ExtendedContentDescriptionObject *extendedContentDescriptionObject;
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ASF::File::HeaderExtensionObject *headerExtensionObject;
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ASF::File::MetadataObject *metadataObject;
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ASF::File::MetadataLibraryObject *metadataLibraryObject;
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};
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static ByteVector headerGuid("\x30\x26\xB2\x75\x8E\x66\xCF\x11\xA6\xD9\x00\xAA\x00\x62\xCE\x6C", 16);
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static ByteVector filePropertiesGuid("\xA1\xDC\xAB\x8C\x47\xA9\xCF\x11\x8E\xE4\x00\xC0\x0C\x20\x53\x65", 16);
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static ByteVector streamPropertiesGuid("\x91\x07\xDC\xB7\xB7\xA9\xCF\x11\x8E\xE6\x00\xC0\x0C\x20\x53\x65", 16);
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static ByteVector contentDescriptionGuid("\x33\x26\xB2\x75\x8E\x66\xCF\x11\xA6\xD9\x00\xAA\x00\x62\xCE\x6C", 16);
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static ByteVector extendedContentDescriptionGuid("\x40\xA4\xD0\xD2\x07\xE3\xD2\x11\x97\xF0\x00\xA0\xC9\x5E\xA8\x50", 16);
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static ByteVector headerExtensionGuid("\xb5\x03\xbf_.\xa9\xcf\x11\x8e\xe3\x00\xc0\x0c Se", 16);
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static ByteVector metadataGuid("\xEA\xCB\xF8\xC5\xAF[wH\204g\xAA\214D\xFAL\xCA", 16);
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static ByteVector metadataLibraryGuid("\224\034#D\230\224\321I\241A\x1d\x13NEpT", 16);
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class ASF::File::BaseObject
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{
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public:
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ByteVector data;
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virtual ~BaseObject() {}
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virtual ByteVector guid() = 0;
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virtual void parse(ASF::File *file, unsigned int size);
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virtual ByteVector render(ASF::File *file);
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};
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class ASF::File::UnknownObject : public ASF::File::BaseObject
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{
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ByteVector myGuid;
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public:
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UnknownObject(const ByteVector &guid);
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ByteVector guid();
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};
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class ASF::File::FilePropertiesObject : public ASF::File::BaseObject
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{
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public:
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ByteVector guid();
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void parse(ASF::File *file, uint size);
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};
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class ASF::File::StreamPropertiesObject : public ASF::File::BaseObject
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{
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public:
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ByteVector guid();
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void parse(ASF::File *file, uint size);
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};
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class ASF::File::ContentDescriptionObject : public ASF::File::BaseObject
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{
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public:
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ByteVector guid();
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void parse(ASF::File *file, uint size);
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ByteVector render(ASF::File *file);
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};
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class ASF::File::ExtendedContentDescriptionObject : public ASF::File::BaseObject
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{
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public:
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ByteVectorList attributeData;
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ByteVector guid();
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void parse(ASF::File *file, uint size);
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ByteVector render(ASF::File *file);
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};
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class ASF::File::MetadataObject : public ASF::File::BaseObject
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{
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public:
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ByteVectorList attributeData;
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ByteVector guid();
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void parse(ASF::File *file, uint size);
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ByteVector render(ASF::File *file);
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};
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class ASF::File::MetadataLibraryObject : public ASF::File::BaseObject
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{
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public:
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ByteVectorList attributeData;
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ByteVector guid();
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void parse(ASF::File *file, uint size);
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ByteVector render(ASF::File *file);
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};
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class ASF::File::HeaderExtensionObject : public ASF::File::BaseObject
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{
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public:
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List<ASF::File::BaseObject *> objects;
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ByteVector guid();
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void parse(ASF::File *file, uint size);
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ByteVector render(ASF::File *file);
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};
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void
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ASF::File::BaseObject::parse(ASF::File *file, unsigned int size)
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{
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data = file->readBlock(size - 24);
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}
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ByteVector
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ASF::File::BaseObject::render(ASF::File * /*file*/)
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{
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return guid() + ByteVector::fromLongLong(data.size() + 24, false) + data;
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}
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ASF::File::UnknownObject::UnknownObject(const ByteVector &guid) : myGuid(guid)
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{
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}
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ByteVector
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ASF::File::UnknownObject::guid()
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{
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return myGuid;
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}
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ByteVector
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ASF::File::FilePropertiesObject::guid()
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{
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return filePropertiesGuid;
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}
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void
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ASF::File::FilePropertiesObject::parse(ASF::File *file, uint size)
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{
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BaseObject::parse(file, size);
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file->d->properties->setLength((int)(data.mid(40, 8).toLongLong(false) / 10000000L - data.mid(56, 8).toLongLong(false) / 1000L));
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}
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ByteVector
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ASF::File::StreamPropertiesObject::guid()
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{
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return streamPropertiesGuid;
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}
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void
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ASF::File::StreamPropertiesObject::parse(ASF::File *file, uint size)
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{
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BaseObject::parse(file, size);
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file->d->properties->setChannels(data.mid(56, 2).toShort(false));
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file->d->properties->setSampleRate(data.mid(58, 4).toUInt(false));
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file->d->properties->setBitrate(data.mid(62, 4).toUInt(false) * 8 / 1000);
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}
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ByteVector
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ASF::File::ContentDescriptionObject::guid()
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{
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return contentDescriptionGuid;
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}
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void
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ASF::File::ContentDescriptionObject::parse(ASF::File *file, uint /*size*/)
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{
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file->d->contentDescriptionObject = this;
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int titleLength = file->readWORD();
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int artistLength = file->readWORD();
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int copyrightLength = file->readWORD();
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int commentLength = file->readWORD();
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int ratingLength = file->readWORD();
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file->d->tag->setTitle(file->readString(titleLength));
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file->d->tag->setArtist(file->readString(artistLength));
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file->d->tag->setCopyright(file->readString(copyrightLength));
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file->d->tag->setComment(file->readString(commentLength));
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file->d->tag->setRating(file->readString(ratingLength));
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}
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ByteVector
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ASF::File::ContentDescriptionObject::render(ASF::File *file)
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{
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ByteVector v1 = file->renderString(file->d->tag->title());
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ByteVector v2 = file->renderString(file->d->tag->artist());
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ByteVector v3 = file->renderString(file->d->tag->copyright());
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ByteVector v4 = file->renderString(file->d->tag->comment());
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ByteVector v5 = file->renderString(file->d->tag->rating());
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data.clear();
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data.append(ByteVector::fromShort(v1.size(), false));
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data.append(ByteVector::fromShort(v2.size(), false));
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data.append(ByteVector::fromShort(v3.size(), false));
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data.append(ByteVector::fromShort(v4.size(), false));
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data.append(ByteVector::fromShort(v5.size(), false));
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data.append(v1);
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data.append(v2);
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data.append(v3);
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data.append(v4);
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data.append(v5);
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return BaseObject::render(file);
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}
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ByteVector
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ASF::File::ExtendedContentDescriptionObject::guid()
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{
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return extendedContentDescriptionGuid;
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}
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void
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ASF::File::ExtendedContentDescriptionObject::parse(ASF::File *file, uint /*size*/)
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{
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file->d->extendedContentDescriptionObject = this;
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int count = file->readWORD();
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while(count--) {
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ASF::Attribute attribute;
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String name = attribute.parse(*file);
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file->d->tag->addAttribute(name, attribute);
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}
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}
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ByteVector
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ASF::File::ExtendedContentDescriptionObject::render(ASF::File *file)
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{
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data.clear();
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data.append(ByteVector::fromShort(attributeData.size(), false));
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data.append(attributeData.toByteVector(ByteVector::null));
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return BaseObject::render(file);
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}
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ByteVector
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ASF::File::MetadataObject::guid()
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{
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return metadataGuid;
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}
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void
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ASF::File::MetadataObject::parse(ASF::File *file, uint /*size*/)
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{
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file->d->metadataObject = this;
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int count = file->readWORD();
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while(count--) {
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ASF::Attribute attribute;
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String name = attribute.parse(*file, 1);
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file->d->tag->addAttribute(name, attribute);
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}
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}
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ByteVector
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ASF::File::MetadataObject::render(ASF::File *file)
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{
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data.clear();
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data.append(ByteVector::fromShort(attributeData.size(), false));
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data.append(attributeData.toByteVector(ByteVector::null));
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return BaseObject::render(file);
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}
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ByteVector
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ASF::File::MetadataLibraryObject::guid()
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{
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return metadataLibraryGuid;
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}
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void
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ASF::File::MetadataLibraryObject::parse(ASF::File *file, uint /*size*/)
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{
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file->d->metadataLibraryObject = this;
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int count = file->readWORD();
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while(count--) {
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ASF::Attribute attribute;
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String name = attribute.parse(*file, 2);
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file->d->tag->addAttribute(name, attribute);
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}
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}
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ByteVector
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ASF::File::MetadataLibraryObject::render(ASF::File *file)
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{
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data.clear();
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data.append(ByteVector::fromShort(attributeData.size(), false));
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data.append(attributeData.toByteVector(ByteVector::null));
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return BaseObject::render(file);
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}
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ByteVector
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ASF::File::HeaderExtensionObject::guid()
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{
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return headerExtensionGuid;
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}
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void
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ASF::File::HeaderExtensionObject::parse(ASF::File *file, uint /*size*/)
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{
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file->d->headerExtensionObject = this;
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file->seek(18, File::Current);
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long long dataSize = file->readDWORD();
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long long dataPos = 0;
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while(dataPos < dataSize) {
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ByteVector guid = file->readBlock(16);
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long long size = file->readTQWORD();
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BaseObject *obj;
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if(guid == metadataGuid) {
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obj = new MetadataObject();
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}
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else if(guid == metadataLibraryGuid) {
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obj = new MetadataLibraryObject();
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}
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else {
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obj = new UnknownObject(guid);
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}
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obj->parse(file, size);
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objects.append(obj);
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dataPos += size;
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}
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}
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ByteVector
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ASF::File::HeaderExtensionObject::render(ASF::File *file)
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{
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data.clear();
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for(unsigned int i = 0; i < objects.size(); i++) {
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data.append(objects[i]->render(file));
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}
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data = ByteVector("\x11\xD2\xD3\xAB\xBA\xA9\xcf\x11\x8E\xE6\x00\xC0\x0C\x20\x53\x65\x06\x00", 18) + ByteVector::fromUInt(data.size(), false) + data;
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return BaseObject::render(file);
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}
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////////////////////////////////////////////////////////////////////////////////
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// public members
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////////////////////////////////////////////////////////////////////////////////
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ASF::File::File(const char *file, bool readProperties, Properties::ReadStyle propertiesStyle)
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: TagLib::File(file)
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{
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d = new FilePrivate;
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read(readProperties, propertiesStyle);
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}
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ASF::File::~File()
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{
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for(unsigned int i = 0; i < d->objects.size(); i++) {
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delete d->objects[i];
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}
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if(d->tag) {
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delete d->tag;
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}
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if(d->properties) {
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delete d->properties;
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}
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delete d;
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}
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ASF::Tag *ASF::File::tag() const
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{
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return d->tag;
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}
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ASF::Properties *ASF::File::audioProperties() const
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{
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return d->properties;
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}
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void ASF::File::read(bool /*readProperties*/, Properties::ReadStyle /*propertiesStyle*/)
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{
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if(!isValid())
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return;
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ByteVector guid = readBlock(16);
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if(guid != headerGuid) {
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return;
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}
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d->tag = new ASF::Tag();
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d->properties = new ASF::Properties();
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d->size = readTQWORD();
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int numObjects = readDWORD();
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seek(2, Current);
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for(int i = 0; i < numObjects; i++) {
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ByteVector guid = readBlock(16);
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long size = (long)readTQWORD();
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BaseObject *obj;
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if(guid == filePropertiesGuid) {
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obj = new FilePropertiesObject();
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}
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else if(guid == streamPropertiesGuid) {
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obj = new StreamPropertiesObject();
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}
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else if(guid == contentDescriptionGuid) {
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obj = new ContentDescriptionObject();
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}
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else if(guid == extendedContentDescriptionGuid) {
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obj = new ExtendedContentDescriptionObject();
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}
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else if(guid == headerExtensionGuid) {
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obj = new HeaderExtensionObject();
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}
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else {
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obj = new UnknownObject(guid);
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}
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obj->parse(this, size);
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d->objects.append(obj);
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}
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}
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bool ASF::File::save()
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{
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if(readOnly()) {
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return false;
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}
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if(!d->contentDescriptionObject) {
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d->contentDescriptionObject = new ContentDescriptionObject();
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d->objects.append(d->contentDescriptionObject);
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}
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if(!d->extendedContentDescriptionObject) {
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d->extendedContentDescriptionObject = new ExtendedContentDescriptionObject();
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d->objects.append(d->extendedContentDescriptionObject);
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}
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if(!d->headerExtensionObject) {
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d->headerExtensionObject = new HeaderExtensionObject();
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d->objects.append(d->headerExtensionObject);
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}
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if(!d->metadataObject) {
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d->metadataObject = new MetadataObject();
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d->headerExtensionObject->objects.append(d->metadataObject);
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}
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if(!d->metadataLibraryObject) {
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d->metadataLibraryObject = new MetadataLibraryObject();
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d->headerExtensionObject->objects.append(d->metadataLibraryObject);
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}
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ASF::AttributeListMap::ConstIterator it = d->tag->attributeListMap().begin();
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for(; it != d->tag->attributeListMap().end(); it++) {
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const String &name = it->first;
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const AttributeList &attributes = it->second;
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bool inExtendedContentDescriptionObject = false;
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bool inMetadataObject = false;
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for(unsigned int j = 0; j < attributes.size(); j++) {
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const Attribute &attribute = attributes[j];
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if(!inExtendedContentDescriptionObject && attribute.language() == 0 && attribute.stream() == 0) {
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d->extendedContentDescriptionObject->attributeData.append(attribute.render(name));
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inExtendedContentDescriptionObject = true;
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}
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else if(!inMetadataObject && attribute.language() == 0 && attribute.stream() != 0) {
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d->metadataObject->attributeData.append(attribute.render(name, 1));
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inMetadataObject = true;
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}
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else {
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d->metadataLibraryObject->attributeData.append(attribute.render(name, 2));
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}
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}
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}
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ByteVector data;
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for(unsigned int i = 0; i < d->objects.size(); i++) {
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data.append(d->objects[i]->render(this));
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}
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data = headerGuid + ByteVector::fromLongLong(data.size() + 30, false) + ByteVector::fromUInt(d->objects.size(), false) + ByteVector("\x01\x02", 2) + data;
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insert(data, 0, d->size);
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////
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// protected members
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////////////////////////////////////////////////////////////////////////////////
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int ASF::File::readBYTE()
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{
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ByteVector v = readBlock(1);
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return v[0];
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}
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int ASF::File::readWORD()
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{
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ByteVector v = readBlock(2);
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return v.toShort(false);
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}
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unsigned int ASF::File::readDWORD()
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{
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ByteVector v = readBlock(4);
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return v.toUInt(false);
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}
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long long ASF::File::readTQWORD()
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{
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ByteVector v = readBlock(8);
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return v.toLongLong(false);
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}
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String
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ASF::File::readString(int length)
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{
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ByteVector data = readBlock(length);
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unsigned int size = data.size();
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while (size >= 2) {
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if(data[size - 1] != '\0' || data[size - 2] != '\0') {
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break;
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}
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size -= 2;
|
|
}
|
|
if(size != data.size()) {
|
|
data.resize(size);
|
|
}
|
|
return String(data, String::UTF16LE);
|
|
}
|
|
|
|
ByteVector
|
|
ASF::File::renderString(const String &str, bool includeLength)
|
|
{
|
|
ByteVector data = str.data(String::UTF16LE) + ByteVector::fromShort(0, false);
|
|
if(includeLength) {
|
|
data = ByteVector::fromShort(data.size(), false) + data;
|
|
}
|
|
return data;
|
|
}
|