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Diffstat (limited to 'libs/taglib/taglib/ogg/oggpage.cpp')
| -rw-r--r-- | libs/taglib/taglib/ogg/oggpage.cpp | 258 |
1 files changed, 0 insertions, 258 deletions
diff --git a/libs/taglib/taglib/ogg/oggpage.cpp b/libs/taglib/taglib/ogg/oggpage.cpp deleted file mode 100644 index da231a143b..0000000000 --- a/libs/taglib/taglib/ogg/oggpage.cpp +++ /dev/null @@ -1,258 +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 <tstring.h> -#include <tdebug.h> - -#include "oggpage.h" -#include "oggpageheader.h" -#include "oggfile.h" - -using namespace TagLib; - -class Ogg::Page::PagePrivate -{ -public: - PagePrivate(File *f = 0, long pageOffset = -1) : - file(f), - fileOffset(pageOffset), - packetOffset(0), - header(f, pageOffset), - firstPacketIndex(-1) - { - if(file) { - packetOffset = fileOffset + header.size(); - packetSizes = header.packetSizes(); - dataSize = header.dataSize(); - } - } - - File *file; - long fileOffset; - long packetOffset; - int dataSize; - List<int> packetSizes; - PageHeader header; - int firstPacketIndex; - ByteVectorList packets; -}; - -//////////////////////////////////////////////////////////////////////////////// -// public members -//////////////////////////////////////////////////////////////////////////////// - -Ogg::Page::Page(Ogg::File *file, long pageOffset) -{ - d = new PagePrivate(file, pageOffset); -} - -Ogg::Page::~Page() -{ - delete d; -} - -long Ogg::Page::fileOffset() const -{ - return d->fileOffset; -} - -const Ogg::PageHeader *Ogg::Page::header() const -{ - return &d->header; -} - -int Ogg::Page::firstPacketIndex() const -{ - return d->firstPacketIndex; -} - -void Ogg::Page::setFirstPacketIndex(int index) -{ - d->firstPacketIndex = index; -} - -Ogg::Page::ContainsPacketFlags Ogg::Page::containsPacket(int index) const -{ - int lastPacketIndex = d->firstPacketIndex + packetCount() - 1; - if(index < d->firstPacketIndex || index > lastPacketIndex) - return DoesNotContainPacket; - - ContainsPacketFlags flags = DoesNotContainPacket; - - if(index == d->firstPacketIndex) - flags = ContainsPacketFlags(flags | BeginsWithPacket); - - if(index == lastPacketIndex) - flags = ContainsPacketFlags(flags | EndsWithPacket); - - // If there's only one page and it's complete: - - if(packetCount() == 1 && - !d->header.firstPacketContinued() && - d->header.lastPacketCompleted()) - { - flags = ContainsPacketFlags(flags | CompletePacket); - } - - // Or if the page is (a) the first page and it's complete or (b) the last page - // and it's complete or (c) a page in the middle. - - else if((flags & BeginsWithPacket && !d->header.firstPacketContinued()) || - (flags & EndsWithPacket && d->header.lastPacketCompleted()) || - (!(flags & BeginsWithPacket) && !(flags & EndsWithPacket))) - { - flags = ContainsPacketFlags(flags | CompletePacket); - } - - return flags; -} - -TagLib::uint Ogg::Page::packetCount() const -{ - return d->header.packetSizes().size(); -} - -ByteVectorList Ogg::Page::packets() const -{ - if(!d->packets.isEmpty()) - return d->packets; - - ByteVectorList l; - - if(d->file && d->header.isValid()) { - - d->file->seek(d->packetOffset); - - List<int> packetSizes = d->header.packetSizes(); - - List<int>::ConstIterator it = packetSizes.begin(); - for(; it != packetSizes.end(); ++it) - l.append(d->file->readBlock(*it)); - } - else { - debug("Ogg::Page::packets() -- attempting to read packets from an invalid page."); - } - - return l; -} - -int Ogg::Page::size() const -{ - return d->header.size() + d->header.dataSize(); -} - -ByteVector Ogg::Page::render() const -{ - ByteVector data; - - data.append(d->header.render()); - - if(d->packets.isEmpty()) { - if(d->file) { - d->file->seek(d->packetOffset); - data.append(d->file->readBlock(d->dataSize)); - } - else { - debug("Ogg::Page::render() -- this page is empty!"); - } - } - else { - ByteVectorList::ConstIterator it = d->packets.begin(); - for(; it != d->packets.end(); ++it) - data.append(*it); - } - - // Compute and set the checksum for the Ogg page. The checksum is taken over - // the entire page with the 4 bytes reserved for the checksum zeroed and then - // inserted in bytes 22-25 of the page header. - - ByteVector checksum = ByteVector::fromUInt(data.checksum(), false); - for(int i = 0; i < 4; i++) - data[i + 22] = checksum[i]; - - return data; -} - -List<Ogg::Page *> Ogg::Page::paginate(const ByteVectorList &packets, - PaginationStrategy strategy, - uint streamSerialNumber, - int firstPage, - bool firstPacketContinued, - bool lastPacketCompleted, - bool containsLastPacket) -{ - List<Page *> l; - - int totalSize = 0; - - for(ByteVectorList::ConstIterator it = packets.begin(); it != packets.end(); ++it) - totalSize += (*it).size(); - - if(strategy == Repaginate || totalSize + packets.size() > 255 * 256) { - debug("Ogg::Page::paginate() -- Sorry! Repagination is not yet implemented."); - return l; - } - - // TODO: Handle creation of multiple pages here with appropriate pagination. - - Page *p = new Page(packets, streamSerialNumber, firstPage, firstPacketContinued, - lastPacketCompleted, containsLastPacket); - l.append(p); - - return l; -} - -//////////////////////////////////////////////////////////////////////////////// -// protected members -//////////////////////////////////////////////////////////////////////////////// - -Ogg::Page::Page(const ByteVectorList &packets, - uint streamSerialNumber, - int pageNumber, - bool firstPacketContinued, - bool lastPacketCompleted, - bool containsLastPacket) -{ - d = new PagePrivate; - - ByteVector data; - List<int> packetSizes; - - d->header.setFirstPageOfStream(pageNumber == 0 && !firstPacketContinued); - d->header.setLastPageOfStream(containsLastPacket); - d->header.setFirstPacketContinued(firstPacketContinued); - d->header.setLastPacketCompleted(lastPacketCompleted); - d->header.setStreamSerialNumber(streamSerialNumber); - d->header.setPageSequenceNumber(pageNumber); - - // Build a page from the list of packets. - - for(ByteVectorList::ConstIterator it = packets.begin(); it != packets.end(); ++it) { - packetSizes.append((*it).size()); - data.append(*it); - } - d->packets = packets; - d->header.setPacketSizes(packetSizes); -} |