diff options
Diffstat (limited to 'libs/taglib/taglib/mpeg/id3v2/id3v2header.cpp')
| -rw-r--r-- | libs/taglib/taglib/mpeg/id3v2/id3v2header.cpp | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/libs/taglib/taglib/mpeg/id3v2/id3v2header.cpp b/libs/taglib/taglib/mpeg/id3v2/id3v2header.cpp deleted file mode 100644 index e14adcce15..0000000000 --- a/libs/taglib/taglib/mpeg/id3v2/id3v2header.cpp +++ /dev/null @@ -1,243 +0,0 @@ -/*************************************************************************** - copyright : (C) 2002 - 2008 by Scott Wheeler - email : wheeler@kde.org - ***************************************************************************/ - -/*************************************************************************** - * This library is free software; you can redistribute it and/or modify * - * it under the terms of the GNU Lesser General Public License version * - * 2.1 as published by the Free Software Foundation. * - * * - * This library is distributed in the hope that it will be useful, but * - * WITHOUT ANY WARRANTY; without even the implied warranty of * - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * - * Lesser General Public License for more details. * - * * - * You should have received a copy of the GNU Lesser General Public * - * License along with this library; if not, write to the Free Software * - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * - * USA * - * * - * Alternatively, this file is available under the Mozilla Public * - * License Version 1.1. You may obtain a copy of the License at * - * http://www.mozilla.org/MPL/ * - ***************************************************************************/ - -#include <iostream> -#include <bitset> - -#include <tstring.h> -#include <tdebug.h> - -#include "id3v2header.h" -#include "id3v2footer.h" -#include "id3v2synchdata.h" - -using namespace TagLib; -using namespace ID3v2; - -class Header::HeaderPrivate -{ -public: - HeaderPrivate() : majorVersion(4), - revisionNumber(0), - unsynchronisation(false), - extendedHeader(false), - experimentalIndicator(false), - footerPresent(false), - tagSize(0) {} - - ~HeaderPrivate() {} - - uint majorVersion; - uint revisionNumber; - - bool unsynchronisation; - bool extendedHeader; - bool experimentalIndicator; - bool footerPresent; - - uint tagSize; - - static const uint size = 10; -}; - -//////////////////////////////////////////////////////////////////////////////// -// static members -//////////////////////////////////////////////////////////////////////////////// - -TagLib::uint Header::size() -{ - return HeaderPrivate::size; -} - -ByteVector Header::fileIdentifier() -{ - return ByteVector::fromCString("ID3"); -} - -//////////////////////////////////////////////////////////////////////////////// -// public members -//////////////////////////////////////////////////////////////////////////////// - -Header::Header() -{ - d = new HeaderPrivate; -} - -Header::Header(const ByteVector &data) -{ - d = new HeaderPrivate; - parse(data); -} - -Header::~Header() -{ - delete d; -} - -TagLib::uint Header::majorVersion() const -{ - return d->majorVersion; -} - -void Header::setMajorVersion(TagLib::uint version) -{ - d->majorVersion = version; -} - -TagLib::uint Header::revisionNumber() const -{ - return d->revisionNumber; -} - -bool Header::unsynchronisation() const -{ - return d->unsynchronisation; -} - -bool Header::extendedHeader() const -{ - return d->extendedHeader; -} - -bool Header::experimentalIndicator() const -{ - return d->experimentalIndicator; -} - -bool Header::footerPresent() const -{ - return d->footerPresent; -} - -TagLib::uint Header::tagSize() const -{ - return d->tagSize; -} - -TagLib::uint Header::completeTagSize() const -{ - if(d->footerPresent) - return d->tagSize + d->size + Footer::size(); - else - return d->tagSize + d->size; -} - -void Header::setTagSize(uint s) -{ - d->tagSize = s; -} - -void Header::setData(const ByteVector &data) -{ - parse(data); -} - -ByteVector Header::render() const -{ - ByteVector v; - - // add the file identifier -- "ID3" - v.append(fileIdentifier()); - - // add the version number -- we always render a 2.4.0 tag regardless of what - // the tag originally was. - - v.append(char(4)); - v.append(char(0)); - - // Currently we don't actually support writing extended headers, footers or - // unsynchronized tags, make sure that the flags are set accordingly. - - d->extendedHeader = false; - d->footerPresent = false; - d->unsynchronisation = false; - - // render and add the flags - std::bitset<8> flags; - - flags[7] = d->unsynchronisation; - flags[6] = d->extendedHeader; - flags[5] = d->experimentalIndicator; - flags[4] = d->footerPresent; - - v.append(char(flags.to_ulong())); - - // add the size - v.append(SynchData::fromUInt(d->tagSize)); - - return v; -} - -//////////////////////////////////////////////////////////////////////////////// -// protected members -//////////////////////////////////////////////////////////////////////////////// - -void Header::parse(const ByteVector &data) -{ - if(data.size() < size()) - return; - - - // do some sanity checking -- even in ID3v2.3.0 and less the tag size is a - // synch-safe integer, so all bytes must be less than 128. If this is not - // true then this is an invalid tag. - - // note that we're doing things a little out of order here -- the size is - // later in the bytestream than the version - - ByteVector sizeData = data.mid(6, 4); - - if(sizeData.size() != 4) { - d->tagSize = 0; - debug("TagLib::ID3v2::Header::parse() - The tag size as read was 0 bytes!"); - return; - } - - for(ByteVector::Iterator it = sizeData.begin(); it != sizeData.end(); it++) { - if(uchar(*it) >= 128) { - d->tagSize = 0; - debug("TagLib::ID3v2::Header::parse() - One of the size bytes in the id3v2 header was greater than the allowed 128."); - return; - } - } - - // The first three bytes, data[0..2], are the File Identifier, "ID3". (structure 3.1 "file identifier") - - // Read the version number from the fourth and fifth bytes. - d->majorVersion = data[3]; // (structure 3.1 "major version") - d->revisionNumber = data[4]; // (structure 3.1 "revision number") - - // Read the flags, the first four bits of the sixth byte. - std::bitset<8> flags(data[5]); - - d->unsynchronisation = flags[7]; // (structure 3.1.a) - d->extendedHeader = flags[6]; // (structure 3.1.b) - d->experimentalIndicator = flags[5]; // (structure 3.1.c) - d->footerPresent = flags[4]; // (structure 3.1.d) - - // Get the size from the remaining four bytes (read above) - - d->tagSize = SynchData::toUInt(sizeData); // (structure 3.1 "size") -} |