662 lines
21 KiB
C++
662 lines
21 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 <memory>
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#include "tdebug.h"
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#include "tbytevectorlist.h"
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#include "tpropertymap.h"
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#include "tstring.h"
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#include "tagutils.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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#include "asfutils.h"
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using namespace Strawberry_TagLib::TagLib;
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class ASF::File::FilePrivate {
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public:
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class BaseObject;
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class UnknownObject;
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class FilePropertiesObject;
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class StreamPropertiesObject;
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class ContentDescriptionObject;
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class ExtendedContentDescriptionObject;
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class HeaderExtensionObject;
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class CodecListObject;
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class MetadataObject;
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class MetadataLibraryObject;
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typedef List<std::shared_ptr<BaseObject>> ObjectList;
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typedef ObjectList::ConstIterator ObjectConstIterator;
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FilePrivate() : headerSize(0) {}
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unsigned long long headerSize;
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std::unique_ptr<ASF::Tag> tag;
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std::unique_ptr<ASF::AudioProperties> properties;
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ObjectList objects;
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std::shared_ptr<ContentDescriptionObject> contentDescriptionObject;
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std::shared_ptr<ExtendedContentDescriptionObject> extendedContentDescriptionObject;
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std::shared_ptr<HeaderExtensionObject> headerExtensionObject;
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std::shared_ptr<MetadataObject> metadataObject;
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std::shared_ptr<MetadataLibraryObject> metadataLibraryObject;
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};
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namespace {
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const ByteVector headerGuid("\x30\x26\xB2\x75\x8E\x66\xCF\x11\xA6\xD9\x00\xAA\x00\x62\xCE\x6C", 16);
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const ByteVector filePropertiesGuid("\xA1\xDC\xAB\x8C\x47\xA9\xCF\x11\x8E\xE4\x00\xC0\x0C\x20\x53\x65", 16);
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const ByteVector streamPropertiesGuid("\x91\x07\xDC\xB7\xB7\xA9\xCF\x11\x8E\xE6\x00\xC0\x0C\x20\x53\x65", 16);
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const ByteVector contentDescriptionGuid("\x33\x26\xB2\x75\x8E\x66\xCF\x11\xA6\xD9\x00\xAA\x00\x62\xCE\x6C", 16);
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const ByteVector extendedContentDescriptionGuid("\x40\xA4\xD0\xD2\x07\xE3\xD2\x11\x97\xF0\x00\xA0\xC9\x5E\xA8\x50", 16);
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const ByteVector headerExtensionGuid("\xb5\x03\xbf_.\xa9\xcf\x11\x8e\xe3\x00\xc0\x0c Se", 16);
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const ByteVector metadataGuid("\xEA\xCB\xF8\xC5\xAF[wH\204g\xAA\214D\xFAL\xCA", 16);
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const ByteVector metadataLibraryGuid("\224\034#D\230\224\321I\241A\x1d\x13NEpT", 16);
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const ByteVector codecListGuid("\x40\x52\xd1\x86\x1d\x31\xd0\x11\xa3\xa4\x00\xa0\xc9\x03\x48\xf6", 16);
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const ByteVector contentEncryptionGuid("\xFB\xB3\x11\x22\x23\xBD\xD2\x11\xB4\xB7\x00\xA0\xC9\x55\xFC\x6E", 16);
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const ByteVector extendedContentEncryptionGuid("\x14\xE6\x8A\x29\x22\x26 \x17\x4C\xB9\x35\xDA\xE0\x7E\xE9\x28\x9C", 16);
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const ByteVector advancedContentEncryptionGuid("\xB6\x9B\x07\x7A\xA4\xDA\x12\x4E\xA5\xCA\x91\xD3\x8D\xC1\x1A\x8D", 16);
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} // namespace
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class ASF::File::FilePrivate::BaseObject {
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public:
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ByteVector data;
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virtual ~BaseObject() {}
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virtual ByteVector guid() const = 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::FilePrivate::UnknownObject : public ASF::File::FilePrivate::BaseObject {
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ByteVector myGuid;
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public:
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explicit UnknownObject(const ByteVector &guid);
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ByteVector guid() const override;
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};
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class ASF::File::FilePrivate::FilePropertiesObject : public ASF::File::FilePrivate::BaseObject {
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public:
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ByteVector guid() const override;
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void parse(ASF::File *file, unsigned int size) override;
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};
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class ASF::File::FilePrivate::StreamPropertiesObject : public ASF::File::FilePrivate::BaseObject {
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public:
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ByteVector guid() const override;
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void parse(ASF::File *file, unsigned int size) override;
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};
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class ASF::File::FilePrivate::ContentDescriptionObject : public ASF::File::FilePrivate::BaseObject {
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public:
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ByteVector guid() const override;
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void parse(ASF::File *file, unsigned int size) override;
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ByteVector render(ASF::File *file) override;
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};
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class ASF::File::FilePrivate::ExtendedContentDescriptionObject : public ASF::File::FilePrivate::BaseObject {
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public:
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ByteVectorList attributeData;
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ByteVector guid() const override;
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void parse(ASF::File *file, unsigned int size) override;
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ByteVector render(ASF::File *file) override;
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};
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class ASF::File::FilePrivate::MetadataObject : public ASF::File::FilePrivate::BaseObject {
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public:
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ByteVectorList attributeData;
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ByteVector guid() const override;
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void parse(ASF::File *file, unsigned int size) override;
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ByteVector render(ASF::File *file) override;
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};
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class ASF::File::FilePrivate::MetadataLibraryObject : public ASF::File::FilePrivate::BaseObject {
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public:
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ByteVectorList attributeData;
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ByteVector guid() const override;
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void parse(ASF::File *file, unsigned int size) override;
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ByteVector render(ASF::File *file) override;
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};
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class ASF::File::FilePrivate::HeaderExtensionObject : public ASF::File::FilePrivate::BaseObject {
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public:
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ObjectList objects;
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HeaderExtensionObject();
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ByteVector guid() const override;
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void parse(ASF::File *file, unsigned int size) override;
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ByteVector render(ASF::File *file) override;
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};
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class ASF::File::FilePrivate::CodecListObject : public ASF::File::FilePrivate::BaseObject {
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public:
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ByteVector guid() const override;
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void parse(ASF::File *file, unsigned int size) override;
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private:
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enum CodecType {
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Video = 0x0001,
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Audio = 0x0002,
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Unknown = 0xFFFF
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};
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};
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void ASF::File::FilePrivate::BaseObject::parse(ASF::File *file, unsigned int size) {
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data.clear();
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if (size > 24 && static_cast<long long>(size) <= file->length())
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data = file->readBlock(size - 24);
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else
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data = ByteVector();
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}
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ByteVector ASF::File::FilePrivate::BaseObject::render(ASF::File * /*file*/) {
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return guid() + ByteVector::fromUInt64LE(data.size() + 24) + data;
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}
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ASF::File::FilePrivate::UnknownObject::UnknownObject(const ByteVector &guid) : myGuid(guid) {}
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ByteVector ASF::File::FilePrivate::UnknownObject::guid() const {
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return myGuid;
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}
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ByteVector ASF::File::FilePrivate::FilePropertiesObject::guid() const {
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return filePropertiesGuid;
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}
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void ASF::File::FilePrivate::FilePropertiesObject::parse(ASF::File *file, unsigned int size) {
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BaseObject::parse(file, size);
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if (data.size() < 64) {
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debug("ASF::File::FilePrivate::FilePropertiesObject::parse() -- data is too short.");
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return;
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}
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const long long duration = data.toInt64LE(40);
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const long long preroll = data.toInt64LE(56);
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file->d->properties->setLengthInMilliseconds(static_cast<int>(duration / 10000.0 - preroll + 0.5));
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}
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ByteVector ASF::File::FilePrivate::StreamPropertiesObject::guid() const {
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return streamPropertiesGuid;
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}
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void ASF::File::FilePrivate::StreamPropertiesObject::parse(ASF::File *file, unsigned int size) {
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BaseObject::parse(file, size);
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if (data.size() < 70) {
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debug("ASF::File::FilePrivate::StreamPropertiesObject::parse() -- data is too short.");
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return;
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}
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file->d->properties->setCodec(data.toUInt16LE(54));
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file->d->properties->setChannels(data.toUInt16LE(56));
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file->d->properties->setSampleRate(data.toUInt32LE(58));
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file->d->properties->setBitrate(static_cast<int>(data.toUInt32LE(62) * 8.0 / 1000.0 + 0.5));
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file->d->properties->setBitsPerSample(data.toUInt16LE(68));
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}
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ByteVector ASF::File::FilePrivate::ContentDescriptionObject::guid() const {
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return contentDescriptionGuid;
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}
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void ASF::File::FilePrivate::ContentDescriptionObject::parse(ASF::File *file, unsigned int /*size*/) {
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const int titleLength = readWORD(file);
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const int artistLength = readWORD(file);
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const int copyrightLength = readWORD(file);
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const int commentLength = readWORD(file);
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const int ratingLength = readWORD(file);
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file->d->tag->setTitle(readString(file, titleLength));
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file->d->tag->setArtist(readString(file, artistLength));
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file->d->tag->setCopyright(readString(file, copyrightLength));
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file->d->tag->setComment(readString(file, commentLength));
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file->d->tag->setRating(readString(file, ratingLength));
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}
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ByteVector ASF::File::FilePrivate::ContentDescriptionObject::render(ASF::File *file) {
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const ByteVector v1 = renderString(file->d->tag->title());
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const ByteVector v2 = renderString(file->d->tag->artist());
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const ByteVector v3 = renderString(file->d->tag->copyright());
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const ByteVector v4 = renderString(file->d->tag->comment());
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const ByteVector v5 = renderString(file->d->tag->rating());
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data.clear();
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data.append(ByteVector::fromUInt16LE(v1.size()));
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data.append(ByteVector::fromUInt16LE(v2.size()));
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data.append(ByteVector::fromUInt16LE(v3.size()));
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data.append(ByteVector::fromUInt16LE(v4.size()));
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data.append(ByteVector::fromUInt16LE(v5.size()));
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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 ASF::File::FilePrivate::ExtendedContentDescriptionObject::guid() const {
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return extendedContentDescriptionGuid;
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}
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void ASF::File::FilePrivate::ExtendedContentDescriptionObject::parse(ASF::File *file, unsigned int /*size*/) {
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int count = readWORD(file);
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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 ASF::File::FilePrivate::ExtendedContentDescriptionObject::render(ASF::File *file) {
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data.clear();
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data.append(ByteVector::fromUInt16LE(attributeData.size()));
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data.append(attributeData.toByteVector(""));
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return BaseObject::render(file);
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}
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ByteVector ASF::File::FilePrivate::MetadataObject::guid() const {
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return metadataGuid;
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}
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void ASF::File::FilePrivate::MetadataObject::parse(ASF::File *file, unsigned int /*size*/) {
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int count = readWORD(file);
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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 ASF::File::FilePrivate::MetadataObject::render(ASF::File *file) {
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data.clear();
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data.append(ByteVector::fromUInt16LE(attributeData.size()));
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data.append(attributeData.toByteVector(""));
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return BaseObject::render(file);
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}
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ByteVector ASF::File::FilePrivate::MetadataLibraryObject::guid() const {
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return metadataLibraryGuid;
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}
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void ASF::File::FilePrivate::MetadataLibraryObject::parse(ASF::File *file, unsigned int /*size*/) {
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int count = readWORD(file);
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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 ASF::File::FilePrivate::MetadataLibraryObject::render(ASF::File *file) {
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data.clear();
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data.append(ByteVector::fromUInt16LE(attributeData.size()));
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data.append(attributeData.toByteVector(""));
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return BaseObject::render(file);
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}
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ASF::File::FilePrivate::HeaderExtensionObject::HeaderExtensionObject() {
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objects.setAutoDelete(true);
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}
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ByteVector ASF::File::FilePrivate::HeaderExtensionObject::guid() const {
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return headerExtensionGuid;
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}
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void ASF::File::FilePrivate::HeaderExtensionObject::parse(ASF::File *file, unsigned int /*size*/) {
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file->seek(18, File::Current);
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long long dataSize = readDWORD(file);
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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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if (guid.size() != 16) {
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file->setValid(false);
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break;
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}
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bool ok;
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long long size = readQWORD(file, &ok);
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if (!ok) {
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file->setValid(false);
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break;
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}
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std::shared_ptr<BaseObject> obj;
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if (guid == metadataGuid) {
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file->d->metadataObject.reset(new MetadataObject());
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obj = file->d->metadataObject;
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}
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else if (guid == metadataLibraryGuid) {
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file->d->metadataLibraryObject.reset(new MetadataLibraryObject());
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obj = file->d->metadataLibraryObject;
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}
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else {
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obj.reset(new UnknownObject(guid));
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}
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obj->parse(file, static_cast<unsigned int>(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 ASF::File::FilePrivate::HeaderExtensionObject::render(ASF::File *file) {
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data.clear();
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for (ObjectConstIterator it = objects.begin(); it != objects.end(); ++it) {
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data.append((*it)->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::fromUInt32LE(data.size()) + data;
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return BaseObject::render(file);
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}
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ByteVector ASF::File::FilePrivate::CodecListObject::guid() const {
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return codecListGuid;
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}
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void ASF::File::FilePrivate::CodecListObject::parse(ASF::File *file, unsigned int size) {
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BaseObject::parse(file, size);
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if (data.size() <= 20) {
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debug("ASF::File::FilePrivate::CodecListObject::parse() -- data is too short.");
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return;
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}
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unsigned int pos = 16;
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const int count = data.toUInt32LE(pos);
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pos += 4;
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for (int i = 0; i < count; ++i) {
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if (pos >= data.size())
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break;
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const CodecType type = static_cast<CodecType>(data.toUInt16LE(pos));
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pos += 2;
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int nameLength = data.toUInt16LE(pos);
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pos += 2;
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const unsigned int namePos = pos;
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pos += nameLength * 2;
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const int descLength = data.toUInt16LE(pos);
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pos += 2;
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const unsigned int descPos = pos;
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pos += descLength * 2;
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const int infoLength = data.toUInt16LE(pos);
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pos += 2 + infoLength * 2;
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if (type == CodecListObject::Audio) {
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// First audio codec found.
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const String name(data.mid(namePos, nameLength * 2), String::UTF16LE);
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file->d->properties->setCodecName(name.stripWhiteSpace());
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const String desc(data.mid(descPos, descLength * 2), String::UTF16LE);
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file->d->properties->setCodecDescription(desc.stripWhiteSpace());
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break;
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}
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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// static members
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////////////////////////////////////////////////////////////////////////////////
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bool ASF::File::isSupported(IOStream *stream) {
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// An ASF file has to start with the designated GUID.
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const ByteVector id = Utils::readHeader(stream, 16, false);
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return (id == headerGuid);
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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(FileName file, bool, AudioProperties::ReadStyle) : Strawberry_TagLib::TagLib::File(file), d(new FilePrivate()) {
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if (isOpen())
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read();
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}
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ASF::File::File(IOStream *stream, bool, AudioProperties::ReadStyle) : Strawberry_TagLib::TagLib::File(stream), d(new FilePrivate()) {
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if (isOpen())
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read();
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}
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ASF::File::~File() {
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delete d;
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}
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ASF::Tag *ASF::File::tag() const {
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return d->tag.get();
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}
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ASF::AudioProperties *ASF::File::audioProperties() const {
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return d->properties.get();
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}
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bool ASF::File::save() {
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if (readOnly()) {
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debug("ASF::File::save() -- File is read only.");
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return false;
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}
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if (!isValid()) {
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debug("ASF::File::save() -- Trying to save invalid file.");
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return false;
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}
|
|
|
|
if (!d->contentDescriptionObject) {
|
|
d->contentDescriptionObject.reset(new FilePrivate::ContentDescriptionObject());
|
|
d->objects.append(d->contentDescriptionObject);
|
|
}
|
|
if (!d->extendedContentDescriptionObject) {
|
|
d->extendedContentDescriptionObject.reset(new FilePrivate::ExtendedContentDescriptionObject());
|
|
d->objects.append(d->extendedContentDescriptionObject);
|
|
}
|
|
if (!d->headerExtensionObject) {
|
|
d->headerExtensionObject.reset(new FilePrivate::HeaderExtensionObject());
|
|
d->objects.append(d->headerExtensionObject);
|
|
}
|
|
if (!d->metadataObject) {
|
|
d->metadataObject.reset(new FilePrivate::MetadataObject());
|
|
d->headerExtensionObject->objects.append(d->metadataObject);
|
|
}
|
|
if (!d->metadataLibraryObject) {
|
|
d->metadataLibraryObject.reset(new FilePrivate::MetadataLibraryObject());
|
|
d->headerExtensionObject->objects.append(d->metadataLibraryObject);
|
|
}
|
|
|
|
d->extendedContentDescriptionObject->attributeData.clear();
|
|
d->metadataObject->attributeData.clear();
|
|
d->metadataLibraryObject->attributeData.clear();
|
|
|
|
const AttributeListMap allAttributes = d->tag->attributeListMap();
|
|
|
|
for (AttributeListMap::ConstIterator it = allAttributes.begin(); it != allAttributes.end(); ++it) {
|
|
|
|
const String &name = it->first;
|
|
const AttributeList &attributes = it->second;
|
|
|
|
bool inExtendedContentDescriptionObject = false;
|
|
bool inMetadataObject = false;
|
|
|
|
for (AttributeList::ConstIterator jt = attributes.begin(); jt != attributes.end(); ++jt) {
|
|
|
|
const Attribute &attribute = *jt;
|
|
const bool largeValue = (attribute.dataSize() > 65535);
|
|
const bool guid = (attribute.type() == Attribute::GuidType);
|
|
|
|
if (!inExtendedContentDescriptionObject && !guid && !largeValue && attribute.language() == 0 && attribute.stream() == 0) {
|
|
d->extendedContentDescriptionObject->attributeData.append(attribute.render(name));
|
|
inExtendedContentDescriptionObject = true;
|
|
}
|
|
else if (!inMetadataObject && !guid && !largeValue && attribute.language() == 0 && attribute.stream() != 0) {
|
|
d->metadataObject->attributeData.append(attribute.render(name, 1));
|
|
inMetadataObject = true;
|
|
}
|
|
else {
|
|
d->metadataLibraryObject->attributeData.append(attribute.render(name, 2));
|
|
}
|
|
}
|
|
}
|
|
|
|
ByteVector data;
|
|
for (FilePrivate::ObjectConstIterator it = d->objects.begin(); it != d->objects.end(); ++it) {
|
|
data.append((*it)->render(this));
|
|
}
|
|
|
|
seek(16);
|
|
writeBlock(ByteVector::fromUInt64LE(data.size() + 30));
|
|
writeBlock(ByteVector::fromUInt32LE(d->objects.size()));
|
|
writeBlock(ByteVector("\x01\x02", 2));
|
|
|
|
insert(data, 30, static_cast<size_t>(d->headerSize - 30));
|
|
|
|
d->headerSize = data.size() + 30;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// private members
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
void ASF::File::read() {
|
|
|
|
if (!isValid())
|
|
return;
|
|
|
|
if (readBlock(16) != headerGuid) {
|
|
debug("ASF::File::read(): Not an ASF file.");
|
|
setValid(false);
|
|
return;
|
|
}
|
|
|
|
d->tag.reset(new ASF::Tag());
|
|
d->properties.reset(new ASF::AudioProperties());
|
|
|
|
bool ok;
|
|
d->headerSize = readQWORD(this, &ok);
|
|
if (!ok) {
|
|
setValid(false);
|
|
return;
|
|
}
|
|
int numObjects = readDWORD(this, &ok);
|
|
if (!ok) {
|
|
setValid(false);
|
|
return;
|
|
}
|
|
seek(2, Current);
|
|
|
|
std::shared_ptr<FilePrivate::FilePropertiesObject> filePropertiesObject;
|
|
std::shared_ptr<FilePrivate::StreamPropertiesObject> streamPropertiesObject;
|
|
for (int i = 0; i < numObjects; i++) {
|
|
const ByteVector guid = readBlock(16);
|
|
if (guid.size() != 16) {
|
|
setValid(false);
|
|
break;
|
|
}
|
|
long size = static_cast<long>(readQWORD(this, &ok));
|
|
if (!ok) {
|
|
setValid(false);
|
|
break;
|
|
}
|
|
std::shared_ptr<FilePrivate::BaseObject> obj;
|
|
if (guid == filePropertiesGuid) {
|
|
filePropertiesObject.reset(new FilePrivate::FilePropertiesObject());
|
|
obj = filePropertiesObject;
|
|
}
|
|
else if (guid == streamPropertiesGuid) {
|
|
streamPropertiesObject.reset(new FilePrivate::StreamPropertiesObject());
|
|
obj = streamPropertiesObject;
|
|
}
|
|
else if (guid == contentDescriptionGuid) {
|
|
d->contentDescriptionObject.reset(new FilePrivate::ContentDescriptionObject());
|
|
obj = d->contentDescriptionObject;
|
|
}
|
|
else if (guid == extendedContentDescriptionGuid) {
|
|
d->extendedContentDescriptionObject.reset(new FilePrivate::ExtendedContentDescriptionObject());
|
|
obj = d->extendedContentDescriptionObject;
|
|
}
|
|
else if (guid == headerExtensionGuid) {
|
|
d->headerExtensionObject.reset(new FilePrivate::HeaderExtensionObject());
|
|
obj = d->headerExtensionObject;
|
|
}
|
|
else if (guid == codecListGuid) {
|
|
obj.reset(new FilePrivate::CodecListObject());
|
|
}
|
|
else {
|
|
if (guid == contentEncryptionGuid ||
|
|
guid == extendedContentEncryptionGuid ||
|
|
guid == advancedContentEncryptionGuid) {
|
|
d->properties->setEncrypted(true);
|
|
}
|
|
obj.reset(new FilePrivate::UnknownObject(guid));
|
|
}
|
|
obj->parse(this, size);
|
|
d->objects.append(obj);
|
|
}
|
|
|
|
if (!filePropertiesObject || !streamPropertiesObject) {
|
|
debug("ASF::File::read(): Missing mandatory header objects.");
|
|
setValid(false);
|
|
return;
|
|
}
|
|
|
|
}
|