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synced 2025-07-19 13:34:19 -04:00
Refactoring.
APE-tags are not native to musepack, so I am moving it out. Seperated footer-decoding the same way header-decoding is seperated in ID3v2. Fixed a bug with the version in the footer. Should be 2000 (read 2.000) not 2. git-svn-id: svn://anonsvn.kde.org/home/kde/trunk/kdesupport/taglib@333011 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
This commit is contained in:
Allan Sandfeld Jensen
328
ape/apetag.cpp
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328
ape/apetag.cpp
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/***************************************************************************
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copyright : (C) 2004 by Allan Sandfeld Jensen
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email : kde@carewolf.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
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* USA *
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***************************************************************************/
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#include <tdebug.h>
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#include <tfile.h>
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#include <tstring.h>
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#include <tmap.h>
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#include "apetag.h"
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#include "apefooter.h"
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using namespace TagLib;
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using namespace APE;
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class APE::Tag::TagPrivate
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{
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public:
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TagPrivate() : file(0), tagOffset(-1), tagLength(0) {}
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File *file;
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long tagOffset;
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long tagLength;
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Footer footer;
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ItemListMap itemListMap;
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Map<const String, ByteVector> binaries;
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};
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APE::Item::Item(const String& str) : readOnly(false), locator(false) {
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value.append(str);
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}
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APE::Item::Item(const StringList& values) : readOnly(false), locator(false) {
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value.append(values);
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}
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bool APE::Item::isEmpty() const
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{
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return value.isEmpty();
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}
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////////////////////////////////////////////////////////////////////////////////
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// public methods
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////////////////////////////////////////////////////////////////////////////////
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APE::Tag::Tag() : TagLib::Tag()
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{
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d = new TagPrivate;
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}
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APE::Tag::Tag(File *file, long tagOffset) : TagLib::Tag()
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{
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d = new TagPrivate;
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d->file = file;
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d->tagOffset = tagOffset;
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read();
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}
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APE::Tag::~Tag()
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{
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delete d;
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}
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using TagLib::uint;
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static ByteVector _render_APEItem(String key, Item item)
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{
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ByteVector data;
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uint flags = ((item.readOnly) ? 1 : 0) | ((item.locator) ? 2 : 0);
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ByteVector value;
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if (item.value.isEmpty()) return data;
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StringList::Iterator it = item.value.begin();
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value.append(it->data(String::UTF8));
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it++;
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while (it != item.value.end()) {
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value.append('\0');
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value.append(it->data(String::UTF8));
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it++;
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}
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data.append(ByteVector::fromUInt(value.size(), false));
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data.append(ByteVector::fromUInt(flags, false));
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data.append(key.data(String::UTF8));
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data.append(ByteVector('\0'));
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data.append(value);
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return data;
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}
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ByteVector APE::Tag::render() const
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{
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ByteVector data;
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uint itemCount = 0;
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{ Map<const String,Item>::Iterator i = d->itemListMap.begin();
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while (i != d->itemListMap.end()) {
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if (!i->second.value.isEmpty()) {
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data.append(_render_APEItem(i->first, i->second));
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itemCount++;
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}
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i++;
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}
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}
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{ Map<String,ByteVector>::Iterator i = d->binaries.begin();
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while (i != d->binaries.end()) {
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if (!i->second.isEmpty()) {
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data.append(i->second);
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itemCount++;
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}
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i++;
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}
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}
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d->footer.setItemCount(itemCount);
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d->footer.setTagSize(data.size()+Footer::size());
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return d->footer.renderHeader() + data + d->footer.renderFooter();
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}
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ByteVector APE::Tag::fileIdentifier()
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{
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return ByteVector::fromCString("APETAGEX");
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}
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String APE::Tag::title() const
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{
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if(d->itemListMap["TITLE"].isEmpty())
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return String::null;
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return d->itemListMap["TITLE"].value.front();
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}
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String APE::Tag::artist() const
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{
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if(d->itemListMap["ARTIST"].isEmpty())
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return String::null;
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return d->itemListMap["ARTIST"].value.front();
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}
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String APE::Tag::album() const
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{
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if(d->itemListMap["ALBUM"].isEmpty())
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return String::null;
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return d->itemListMap["ALBUM"].value.front();
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}
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String APE::Tag::comment() const
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{
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if(d->itemListMap["COMMENT"].isEmpty())
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return String::null;
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return d->itemListMap["COMMENT"].value.front();
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}
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String APE::Tag::genre() const
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{
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if(d->itemListMap["GENRE"].isEmpty())
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return String::null;
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return d->itemListMap["GENRE"].value.front();
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}
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TagLib::uint APE::Tag::year() const
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{
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if(d->itemListMap["YEAR"].isEmpty())
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return 0;
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return d->itemListMap["YEAR"].value.front().toInt();
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}
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TagLib::uint APE::Tag::track() const
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{
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if(d->itemListMap["TRACK"].isEmpty())
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return 0;
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return d->itemListMap["TRACK"].value.front().toInt();
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}
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void APE::Tag::setTitle(const String &s)
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{
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addValue("TITLE", s, true);
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}
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void APE::Tag::setArtist(const String &s)
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{
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addValue("ARTIST", s, true);
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}
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void APE::Tag::setAlbum(const String &s)
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{
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addValue("ALBUM", s, true);
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}
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void APE::Tag::setComment(const String &s)
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{
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addValue("COMMENT", s, true);
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}
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void APE::Tag::setGenre(const String &s)
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{
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addValue("GENRE", s, true);
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}
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void APE::Tag::setYear(uint i)
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{
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if(i <=0 )
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removeItem("YEAR");
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else
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addValue("YEAR", String::number(i), true);
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}
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void APE::Tag::setTrack(uint i)
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{
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if(i <=0 )
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removeItem("TRACK");
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else
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addValue("TRACK", String::number(i), true);
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}
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APE::Footer* APE::Tag::footer() const
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{
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return &d->footer;
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}
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const APE::ItemListMap& APE::Tag::itemListMap() const
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{
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return d->itemListMap;
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}
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void APE::Tag::removeItem(const String &key) {
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Map<const String, Item>::Iterator it = d->itemListMap.find(key.upper());
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if(it != d->itemListMap.end())
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d->itemListMap.erase(it);
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}
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void APE::Tag::addValue(const String &key, const String &value, bool replace)
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{
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if(replace)
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removeItem(key);
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if(!value.isEmpty()) {
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Map<const String, Item>::Iterator it = d->itemListMap.find(key.upper());
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if (it != d->itemListMap.end())
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d->itemListMap[key].value.append(value);
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else
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setItem(key, Item(value));
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}
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}
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void APE::Tag::setItem(const String &key, const Item &item)
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{
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d->itemListMap.insert(key, item);
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}
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////////////////////////////////////////////////////////////////////////////////
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// protected methods
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////////////////////////////////////////////////////////////////////////////////
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void APE::Tag::read()
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{
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if(d->file && d->file->isValid()) {
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d->file->seek(d->tagOffset);
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d->footer.setData(d->file->readBlock(Footer::size()));
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if(d->footer.tagSize() == 0 || d->footer.tagSize() > d->file->length())
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return;
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d->file->seek(d->tagOffset + Footer::size() - d->footer.tagSize());
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parse(d->file->readBlock(d->footer.tagSize() - Footer::size()), d->footer.itemCount());
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}
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}
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static StringList _parse_APEString(ByteVector val)
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{
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StringList value;
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int pold = 0;
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int p = val.find('\0');
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while (p != -1) {
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value.append(String(val.mid(pold, p), String::UTF8));
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pold = p+1;
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p = val.find('\0', pold);
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};
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value.append(String(val.mid(pold), String::UTF8));
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return value;
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}
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void APE::Tag::parse(const ByteVector &data, uint count)
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{
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uint pos = 0;
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uint vallen, flags;
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String key, value;
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while(count > 0) {
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vallen = data.mid(pos+0,4).toUInt(false);
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flags = data.mid(pos+4,4).toUInt(false);
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key = String(data.mid(pos+8), String::UTF8);
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key = key.upper();
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APE::Item item;
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if (flags < 4 ) {
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ByteVector val = data.mid(pos+8+key.size()+1, vallen);
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d->itemListMap.insert(key, Item(_parse_APEString(val)));
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} else {
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d->binaries.insert(key,data.mid(pos, 8+key.size()+1+vallen));
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}
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pos += 8 + key.size() + 1 + vallen;
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count--;
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}
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}
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