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Clementine-audio-player-Mac.../3rdparty/taglib/mp4/mp4tag.cpp

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/**************************************************************************
copyright : (C) 2007,2011 by Lukáš Lalinský
email : lalinsky@gmail.com
**************************************************************************/
/***************************************************************************
* 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., 51 Franklin Street, Fifth Floor, Boston, MA *
* 02110-1301 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 <tdebug.h>
#include <tstring.h>
#include <tpropertymap.h>
#include "mp4atom.h"
#include "mp4tag.h"
#include "id3v1genres.h"
using namespace TagLib;
class MP4::Tag::TagPrivate
{
public:
TagPrivate() : file(0), atoms(0) {}
~TagPrivate() {}
TagLib::File *file;
Atoms *atoms;
ItemMap items;
};
MP4::Tag::Tag()
{
d = new TagPrivate;
}
MP4::Tag::Tag(TagLib::File *file, MP4::Atoms *atoms)
{
d = new TagPrivate;
d->file = file;
d->atoms = atoms;
MP4::Atom *ilst = atoms->find("moov", "udta", "meta", "ilst");
if(!ilst) {
//debug("Atom moov.udta.meta.ilst not found.");
return;
}
for(unsigned int i = 0; i < ilst->children.size(); i++) {
MP4::Atom *atom = ilst->children[i];
file->seek(atom->offset + 8);
if(atom->name == "----") {
parseFreeForm(atom);
}
else if(atom->name == "trkn" || atom->name == "disk") {
parseIntPair(atom);
}
else if(atom->name == "cpil" || atom->name == "pgap" || atom->name == "pcst" ||
atom->name == "hdvd") {
parseBool(atom);
}
else if(atom->name == "tmpo") {
parseInt(atom);
}
else if(atom->name == "tvsn" || atom->name == "tves" || atom->name == "cnID" ||
atom->name == "sfID" || atom->name == "atID" || atom->name == "geID") {
parseUInt(atom);
}
else if(atom->name == "plID") {
parseLongLong(atom);
}
else if(atom->name == "stik" || atom->name == "rtng" || atom->name == "akID") {
parseByte(atom);
}
else if(atom->name == "gnre") {
parseGnre(atom);
}
else if(atom->name == "covr") {
parseCovr(atom);
}
else {
parseText(atom);
}
}
}
MP4::Tag::~Tag()
{
delete d;
}
MP4::AtomDataList
MP4::Tag::parseData2(const MP4::Atom *atom, int expectedFlags, bool freeForm)
{
AtomDataList result;
ByteVector data = d->file->readBlock(atom->length - 8);
int i = 0;
unsigned int pos = 0;
while(pos < data.size()) {
const int length = static_cast<int>(data.toUInt(pos));
if(length < 12) {
debug("MP4: Too short atom");
return result;
}
const ByteVector name = data.mid(pos + 4, 4);
const int flags = static_cast<int>(data.toUInt(pos + 8));
if(freeForm && i < 2) {
if(i == 0 && name != "mean") {
debug("MP4: Unexpected atom \"" + name + "\", expecting \"mean\"");
return result;
}
else if(i == 1 && name != "name") {
debug("MP4: Unexpected atom \"" + name + "\", expecting \"name\"");
return result;
}
result.append(AtomData(AtomDataType(flags), data.mid(pos + 12, length - 12)));
}
else {
if(name != "data") {
debug("MP4: Unexpected atom \"" + name + "\", expecting \"data\"");
return result;
}
if(expectedFlags == -1 || flags == expectedFlags) {
result.append(AtomData(AtomDataType(flags), data.mid(pos + 16, length - 16)));
}
}
pos += length;
i++;
}
return result;
}
ByteVectorList
MP4::Tag::parseData(const MP4::Atom *atom, int expectedFlags, bool freeForm)
{
AtomDataList data = parseData2(atom, expectedFlags, freeForm);
ByteVectorList result;
for(uint i = 0; i < data.size(); i++) {
result.append(data[i].data);
}
return result;
}
void
MP4::Tag::parseInt(const MP4::Atom *atom)
{
ByteVectorList data = parseData(atom);
if(data.size()) {
addItem(atom->name, (int)data[0].toShort());
}
}
void
MP4::Tag::parseUInt(const MP4::Atom *atom)
{
ByteVectorList data = parseData(atom);
if(data.size()) {
addItem(atom->name, data[0].toUInt());
}
}
void
MP4::Tag::parseLongLong(const MP4::Atom *atom)
{
ByteVectorList data = parseData(atom);
if(data.size()) {
addItem(atom->name, data[0].toLongLong());
}
}
void
MP4::Tag::parseByte(const MP4::Atom *atom)
{
ByteVectorList data = parseData(atom);
if(data.size()) {
addItem(atom->name, (uchar)data[0].at(0));
}
}
void
MP4::Tag::parseGnre(const MP4::Atom *atom)
{
ByteVectorList data = parseData(atom);
if(data.size()) {
int idx = (int)data[0].toShort();
if(idx > 0) {
addItem("\251gen", StringList(ID3v1::genre(idx - 1)));
}
}
}
void
MP4::Tag::parseIntPair(const MP4::Atom *atom)
{
ByteVectorList data = parseData(atom);
if(data.size()) {
const int a = data[0].toShort(2U);
const int b = data[0].toShort(4U);
addItem(atom->name, MP4::Item(a, b));
}
}
void
MP4::Tag::parseBool(const MP4::Atom *atom)
{
ByteVectorList data = parseData(atom);
if(data.size()) {
bool value = data[0].size() ? data[0][0] != '\0' : false;
addItem(atom->name, value);
}
}
void
MP4::Tag::parseText(const MP4::Atom *atom, int expectedFlags)
{
ByteVectorList data = parseData(atom, expectedFlags);
if(data.size()) {
StringList value;
for(unsigned int i = 0; i < data.size(); i++) {
value.append(String(data[i], String::UTF8));
}
addItem(atom->name, value);
}
}
void
MP4::Tag::parseFreeForm(const MP4::Atom *atom)
{
AtomDataList data = parseData2(atom, -1, true);
if(data.size() > 2) {
String name = "----:" + String(data[0].data, String::UTF8) + ':' + String(data[1].data, String::UTF8);
AtomDataType type = data[2].type;
for(uint i = 2; i < data.size(); i++) {
if(data[i].type != type) {
debug("MP4: We currently don't support values with multiple types");
break;
}
}
if(type == TypeUTF8) {
StringList value;
for(uint i = 2; i < data.size(); i++) {
value.append(String(data[i].data, String::UTF8));
}
Item item(value);
item.setAtomDataType(type);
addItem(name, item);
}
else {
ByteVectorList value;
for(uint i = 2; i < data.size(); i++) {
value.append(data[i].data);
}
Item item(value);
item.setAtomDataType(type);
addItem(name, item);
}
}
}
void
MP4::Tag::parseCovr(const MP4::Atom *atom)
{
MP4::CoverArtList value;
ByteVector data = d->file->readBlock(atom->length - 8);
unsigned int pos = 0;
while(pos < data.size()) {
const int length = static_cast<int>(data.toUInt(pos));
if(length < 12) {
debug("MP4: Too short atom");
break;;
}
const ByteVector name = data.mid(pos + 4, 4);
const int flags = static_cast<int>(data.toUInt(pos + 8));
if(name != "data") {
debug("MP4: Unexpected atom \"" + name + "\", expecting \"data\"");
break;
}
if(flags == TypeJPEG || flags == TypePNG || flags == TypeBMP ||
flags == TypeGIF || flags == TypeImplicit) {
value.append(MP4::CoverArt(MP4::CoverArt::Format(flags),
data.mid(pos + 16, length - 16)));
}
else {
debug("MP4: Unknown covr format " + String::number(flags));
}
pos += length;
}
if(value.size() > 0)
addItem(atom->name, value);
}
ByteVector
MP4::Tag::padIlst(const ByteVector &data, int length) const
{
if(length == -1) {
length = ((data.size() + 1023) & ~1023) - data.size();
}
return renderAtom("free", ByteVector(length, '\1'));
}
ByteVector
MP4::Tag::renderAtom(const ByteVector &name, const ByteVector &data) const
{
return ByteVector::fromUInt(data.size() + 8) + name + data;
}
ByteVector
MP4::Tag::renderData(const ByteVector &name, int flags, const ByteVectorList &data) const
{
ByteVector result;
for(unsigned int i = 0; i < data.size(); i++) {
result.append(renderAtom("data", ByteVector::fromUInt(flags) + ByteVector(4, '\0') + data[i]));
}
return renderAtom(name, result);
}
ByteVector
MP4::Tag::renderBool(const ByteVector &name, const MP4::Item &item) const
{
ByteVectorList data;
data.append(ByteVector(1, item.toBool() ? '\1' : '\0'));
return renderData(name, TypeInteger, data);
}
ByteVector
MP4::Tag::renderInt(const ByteVector &name, const MP4::Item &item) const
{
ByteVectorList data;
data.append(ByteVector::fromShort(item.toInt()));
return renderData(name, TypeInteger, data);
}
ByteVector
MP4::Tag::renderUInt(const ByteVector &name, const MP4::Item &item) const
{
ByteVectorList data;
data.append(ByteVector::fromUInt(item.toUInt()));
return renderData(name, TypeInteger, data);
}
ByteVector
MP4::Tag::renderLongLong(const ByteVector &name, const MP4::Item &item) const
{
ByteVectorList data;
data.append(ByteVector::fromLongLong(item.toLongLong()));
return renderData(name, TypeInteger, data);
}
ByteVector
MP4::Tag::renderByte(const ByteVector &name, const MP4::Item &item) const
{
ByteVectorList data;
data.append(ByteVector(1, item.toByte()));
return renderData(name, TypeInteger, data);
}
ByteVector
MP4::Tag::renderIntPair(const ByteVector &name, const MP4::Item &item) const
{
ByteVectorList data;
data.append(ByteVector(2, '\0') +
ByteVector::fromShort(item.toIntPair().first) +
ByteVector::fromShort(item.toIntPair().second) +
ByteVector(2, '\0'));
return renderData(name, TypeImplicit, data);
}
ByteVector
MP4::Tag::renderIntPairNoTrailing(const ByteVector &name, const MP4::Item &item) const
{
ByteVectorList data;
data.append(ByteVector(2, '\0') +
ByteVector::fromShort(item.toIntPair().first) +
ByteVector::fromShort(item.toIntPair().second));
return renderData(name, TypeImplicit, data);
}
ByteVector
MP4::Tag::renderText(const ByteVector &name, const MP4::Item &item, int flags) const
{
ByteVectorList data;
StringList value = item.toStringList();
for(unsigned int i = 0; i < value.size(); i++) {
data.append(value[i].data(String::UTF8));
}
return renderData(name, flags, data);
}
ByteVector
MP4::Tag::renderCovr(const ByteVector &name, const MP4::Item &item) const
{
ByteVector data;
MP4::CoverArtList value = item.toCoverArtList();
for(unsigned int i = 0; i < value.size(); i++) {
data.append(renderAtom("data", ByteVector::fromUInt(value[i].format()) +
ByteVector(4, '\0') + value[i].data()));
}
return renderAtom(name, data);
}
ByteVector
MP4::Tag::renderFreeForm(const String &name, const MP4::Item &item) const
{
StringList header = StringList::split(name, ":");
if (header.size() != 3) {
debug("MP4: Invalid free-form item name \"" + name + "\"");
return ByteVector::null;
}
ByteVector data;
data.append(renderAtom("mean", ByteVector::fromUInt(0) + header[1].data(String::UTF8)));
data.append(renderAtom("name", ByteVector::fromUInt(0) + header[2].data(String::UTF8)));
AtomDataType type = item.atomDataType();
if(type == TypeUndefined) {
if(!item.toStringList().isEmpty()) {
type = TypeUTF8;
}
else {
type = TypeImplicit;
}
}
if(type == TypeUTF8) {
StringList value = item.toStringList();
for(unsigned int i = 0; i < value.size(); i++) {
data.append(renderAtom("data", ByteVector::fromUInt(type) + ByteVector(4, '\0') + value[i].data(String::UTF8)));
}
}
else {
ByteVectorList value = item.toByteVectorList();
for(unsigned int i = 0; i < value.size(); i++) {
data.append(renderAtom("data", ByteVector::fromUInt(type) + ByteVector(4, '\0') + value[i]));
}
}
return renderAtom("----", data);
}
bool
MP4::Tag::save()
{
ByteVector data;
for(MP4::ItemMap::ConstIterator it = d->items.begin(); it != d->items.end(); ++it) {
const String name = it->first;
if(name.startsWith("----")) {
data.append(renderFreeForm(name, it->second));
}
else if(name == "trkn") {
data.append(renderIntPair(name.data(String::Latin1), it->second));
}
else if(name == "disk") {
data.append(renderIntPairNoTrailing(name.data(String::Latin1), it->second));
}
else if(name == "cpil" || name == "pgap" || name == "pcst" || name == "hdvd") {
data.append(renderBool(name.data(String::Latin1), it->second));
}
else if(name == "tmpo") {
data.append(renderInt(name.data(String::Latin1), it->second));
}
else if(name == "tvsn" || name == "tves" || name == "cnID" ||
name == "sfID" || name == "atID" || name == "geID") {
data.append(renderUInt(name.data(String::Latin1), it->second));
}
else if(name == "plID") {
data.append(renderLongLong(name.data(String::Latin1), it->second));
}
else if(name == "stik" || name == "rtng" || name == "akID") {
data.append(renderByte(name.data(String::Latin1), it->second));
}
else if(name == "covr") {
data.append(renderCovr(name.data(String::Latin1), it->second));
}
else if(name.size() == 4){
data.append(renderText(name.data(String::Latin1), it->second));
}
else {
debug("MP4: Unknown item name \"" + name + "\"");
}
}
data = renderAtom("ilst", data);
AtomList path = d->atoms->path("moov", "udta", "meta", "ilst");
if(path.size() == 4) {
saveExisting(data, path);
}
else {
saveNew(data);
}
return true;
}
void
MP4::Tag::updateParents(const AtomList &path, long delta, int ignore)
{
for(unsigned int i = 0; i < path.size() - ignore; i++) {
d->file->seek(path[i]->offset);
long size = d->file->readBlock(4).toUInt();
// 64-bit
if (size == 1) {
d->file->seek(4, File::Current); // Skip name
long long longSize = d->file->readBlock(8).toLongLong();
// Seek the offset of the 64-bit size
d->file->seek(path[i]->offset + 8);
d->file->writeBlock(ByteVector::fromLongLong(longSize + delta));
}
// 32-bit
else {
d->file->seek(path[i]->offset);
d->file->writeBlock(ByteVector::fromUInt(size + delta));
}
}
}
void
MP4::Tag::updateOffsets(long delta, long offset)
{
MP4::Atom *moov = d->atoms->find("moov");
if(moov) {
MP4::AtomList stco = moov->findall("stco", true);
for(unsigned int i = 0; i < stco.size(); i++) {
MP4::Atom *atom = stco[i];
if(atom->offset > offset) {
atom->offset += delta;
}
d->file->seek(atom->offset + 12);
ByteVector data = d->file->readBlock(atom->length - 12);
unsigned int count = data.toUInt();
d->file->seek(atom->offset + 16);
uint pos = 4;
while(count--) {
long o = static_cast<long>(data.toUInt(pos));
if(o > offset) {
o += delta;
}
d->file->writeBlock(ByteVector::fromUInt(o));
pos += 4;
}
}
MP4::AtomList co64 = moov->findall("co64", true);
for(unsigned int i = 0; i < co64.size(); i++) {
MP4::Atom *atom = co64[i];
if(atom->offset > offset) {
atom->offset += delta;
}
d->file->seek(atom->offset + 12);
ByteVector data = d->file->readBlock(atom->length - 12);
unsigned int count = data.toUInt();
d->file->seek(atom->offset + 16);
uint pos = 4;
while(count--) {
long long o = data.toLongLong(pos);
if(o > offset) {
o += delta;
}
d->file->writeBlock(ByteVector::fromLongLong(o));
pos += 8;
}
}
}
MP4::Atom *moof = d->atoms->find("moof");
if(moof) {
MP4::AtomList tfhd = moof->findall("tfhd", true);
for(unsigned int i = 0; i < tfhd.size(); i++) {
MP4::Atom *atom = tfhd[i];
if(atom->offset > offset) {
atom->offset += delta;
}
d->file->seek(atom->offset + 9);
ByteVector data = d->file->readBlock(atom->length - 9);
const unsigned int flags = data.toUInt(0, 3, true);
if(flags & 1) {
long long o = data.toLongLong(7U);
if(o > offset) {
o += delta;
}
d->file->seek(atom->offset + 16);
d->file->writeBlock(ByteVector::fromLongLong(o));
}
}
}
}
void
MP4::Tag::saveNew(ByteVector data)
{
data = renderAtom("meta", ByteVector(4, '\0') +
renderAtom("hdlr", ByteVector(8, '\0') + ByteVector("mdirappl") +
ByteVector(9, '\0')) +
data + padIlst(data));
AtomList path = d->atoms->path("moov", "udta");
if(path.size() != 2) {
path = d->atoms->path("moov");
data = renderAtom("udta", data);
}
long offset = path[path.size() - 1]->offset + 8;
d->file->insert(data, offset, 0);
updateParents(path, data.size());
updateOffsets(data.size(), offset);
}
void
MP4::Tag::saveExisting(ByteVector data, const AtomList &path)
{
MP4::Atom *ilst = path[path.size() - 1];
long offset = ilst->offset;
long length = ilst->length;
MP4::Atom *meta = path[path.size() - 2];
AtomList::ConstIterator index = meta->children.find(ilst);
// check if there is an atom before 'ilst', and possibly use it as padding
if(index != meta->children.begin()) {
AtomList::ConstIterator prevIndex = index;
prevIndex--;
MP4::Atom *prev = *prevIndex;
if(prev->name == "free") {
offset = prev->offset;
length += prev->length;
}
}
// check if there is an atom after 'ilst', and possibly use it as padding
AtomList::ConstIterator nextIndex = index;
nextIndex++;
if(nextIndex != meta->children.end()) {
MP4::Atom *next = *nextIndex;
if(next->name == "free") {
length += next->length;
}
}
long delta = data.size() - length;
if(delta > 0 || (delta < 0 && delta > -8)) {
data.append(padIlst(data));
delta = data.size() - length;
}
else if(delta < 0) {
data.append(padIlst(data, -delta - 8));
delta = 0;
}
d->file->insert(data, offset, length);
if(delta) {
updateParents(path, delta, 1);
updateOffsets(delta, offset);
}
}
String
MP4::Tag::title() const
{
if(d->items.contains("\251nam"))
return d->items["\251nam"].toStringList().toString(", ");
return String::null;
}
String
MP4::Tag::artist() const
{
if(d->items.contains("\251ART"))
return d->items["\251ART"].toStringList().toString(", ");
return String::null;
}
String
MP4::Tag::album() const
{
if(d->items.contains("\251alb"))
return d->items["\251alb"].toStringList().toString(", ");
return String::null;
}
String
MP4::Tag::comment() const
{
if(d->items.contains("\251cmt"))
return d->items["\251cmt"].toStringList().toString(", ");
return String::null;
}
String
MP4::Tag::genre() const
{
if(d->items.contains("\251gen"))
return d->items["\251gen"].toStringList().toString(", ");
return String::null;
}
unsigned int
MP4::Tag::year() const
{
if(d->items.contains("\251day"))
return d->items["\251day"].toStringList().toString().toInt();
return 0;
}
unsigned int
MP4::Tag::track() const
{
if(d->items.contains("trkn"))
return d->items["trkn"].toIntPair().first;
return 0;
}
void
MP4::Tag::setTitle(const String &value)
{
d->items["\251nam"] = StringList(value);
}
void
MP4::Tag::setArtist(const String &value)
{
d->items["\251ART"] = StringList(value);
}
void
MP4::Tag::setAlbum(const String &value)
{
d->items["\251alb"] = StringList(value);
}
void
MP4::Tag::setComment(const String &value)
{
d->items["\251cmt"] = StringList(value);
}
void
MP4::Tag::setGenre(const String &value)
{
d->items["\251gen"] = StringList(value);
}
void
MP4::Tag::setYear(uint value)
{
d->items["\251day"] = StringList(String::number(value));
}
void
MP4::Tag::setTrack(uint value)
{
d->items["trkn"] = MP4::Item(value, 0);
}
bool MP4::Tag::isEmpty() const
{
return d->items.isEmpty();
}
MP4::ItemMap &MP4::Tag::itemListMap()
{
return d->items;
}
const MP4::ItemMap &MP4::Tag::itemMap() const
{
return d->items;
}
MP4::Item MP4::Tag::item(const String &key) const
{
return d->items[key];
}
void MP4::Tag::setItem(const String &key, const Item &value)
{
d->items[key] = value;
}
void MP4::Tag::removeItem(const String &key)
{
d->items.erase(key);
}
bool MP4::Tag::contains(const String &key) const
{
return d->items.contains(key);
}
static const char *keyTranslation[][2] = {
{ "\251nam", "TITLE" },
{ "\251ART", "ARTIST" },
{ "\251alb", "ALBUM" },
{ "\251cmt", "COMMENT" },
{ "\251gen", "GENRE" },
{ "\251day", "DATE" },
{ "\251wrt", "COMPOSER" },
{ "\251grp", "GROUPING" },
{ "aART", "ALBUMARTIST" },
{ "trkn", "TRACKNUMBER" },
{ "disk", "DISCNUMBER" },
{ "cpil", "COMPILATION" },
{ "tmpo", "BPM" },
{ "cprt", "COPYRIGHT" },
{ "\251lyr", "LYRICS" },
{ "\251too", "ENCODEDBY" },
{ "soal", "ALBUMSORT" },
{ "soaa", "ALBUMARTISTSORT" },
{ "soar", "ARTISTSORT" },
{ "sonm", "TITLESORT" },
{ "soco", "COMPOSERSORT" },
{ "sosn", "SHOWSORT" },
{ "----:com.apple.iTunes:MusicBrainz Track Id", "MUSICBRAINZ_TRACKID" },
{ "----:com.apple.iTunes:MusicBrainz Artist Id", "MUSICBRAINZ_ARTISTID" },
{ "----:com.apple.iTunes:MusicBrainz Album Id", "MUSICBRAINZ_ALBUMID" },
{ "----:com.apple.iTunes:MusicBrainz Album Artist Id", "MUSICBRAINZ_ALBUMARTISTID" },
{ "----:com.apple.iTunes:MusicBrainz Release Group Id", "MUSICBRAINZ_RELEASEGROUPID" },
{ "----:com.apple.iTunes:MusicBrainz Work Id", "MUSICBRAINZ_WORKID" },
{ "----:com.apple.iTunes:ASIN", "ASIN" },
{ "----:com.apple.iTunes:LABEL", "LABEL" },
{ "----:com.apple.iTunes:LYRICIST", "LYRICIST" },
{ "----:com.apple.iTunes:CONDUCTOR", "CONDUCTOR" },
{ "----:com.apple.iTunes:REMIXER", "REMIXER" },
{ "----:com.apple.iTunes:ENGINEER", "ENGINEER" },
{ "----:com.apple.iTunes:PRODUCER", "PRODUCER" },
{ "----:com.apple.iTunes:DJMIXER", "DJMIXER" },
{ "----:com.apple.iTunes:MIXER", "MIXER" },
{ "----:com.apple.iTunes:SUBTITLE", "SUBTITLE" },
{ "----:com.apple.iTunes:DISCSUBTITLE", "DISCSUBTITLE" },
{ "----:com.apple.iTunes:MOOD", "MOOD" },
{ "----:com.apple.iTunes:ISRC", "ISRC" },
{ "----:com.apple.iTunes:CATALOGNUMBER", "CATALOGNUMBER" },
{ "----:com.apple.iTunes:BARCODE", "BARCODE" },
{ "----:com.apple.iTunes:SCRIPT", "SCRIPT" },
{ "----:com.apple.iTunes:LANGUAGE", "LANGUAGE" },
{ "----:com.apple.iTunes:LICENSE", "LICENSE" },
{ "----:com.apple.iTunes:MEDIA", "MEDIA" },
};
PropertyMap MP4::Tag::properties() const
{
static Map<String, String> keyMap;
if(keyMap.isEmpty()) {
int numKeys = sizeof(keyTranslation) / sizeof(keyTranslation[0]);
for(int i = 0; i < numKeys; i++) {
keyMap[keyTranslation[i][0]] = keyTranslation[i][1];
}
}
PropertyMap props;
MP4::ItemMap::ConstIterator it = d->items.begin();
for(; it != d->items.end(); ++it) {
if(keyMap.contains(it->first)) {
String key = keyMap[it->first];
if(key == "TRACKNUMBER" || key == "DISCNUMBER") {
MP4::Item::IntPair ip = it->second.toIntPair();
String value = String::number(ip.first);
if(ip.second) {
value += "/" + String::number(ip.second);
}
props[key] = value;
}
else if(key == "BPM") {
props[key] = String::number(it->second.toInt());
}
else if(key == "COMPILATION") {
props[key] = String::number(it->second.toBool());
}
else {
props[key] = it->second.toStringList();
}
}
else {
props.unsupportedData().append(it->first);
}
}
return props;
}
void MP4::Tag::removeUnsupportedProperties(const StringList &props)
{
StringList::ConstIterator it = props.begin();
for(; it != props.end(); ++it)
d->items.erase(*it);
}
PropertyMap MP4::Tag::setProperties(const PropertyMap &props)
{
static Map<String, String> reverseKeyMap;
if(reverseKeyMap.isEmpty()) {
int numKeys = sizeof(keyTranslation) / sizeof(keyTranslation[0]);
for(int i = 0; i < numKeys; i++) {
reverseKeyMap[keyTranslation[i][1]] = keyTranslation[i][0];
}
}
PropertyMap origProps = properties();
PropertyMap::ConstIterator it = origProps.begin();
for(; it != origProps.end(); ++it) {
if(!props.contains(it->first) || props[it->first].isEmpty()) {
d->items.erase(reverseKeyMap[it->first]);
}
}
PropertyMap ignoredProps;
it = props.begin();
for(; it != props.end(); ++it) {
if(reverseKeyMap.contains(it->first)) {
String name = reverseKeyMap[it->first];
if((it->first == "TRACKNUMBER" || it->first == "DISCNUMBER") && !it->second.isEmpty()) {
int first = 0, second = 0;
StringList parts = StringList::split(it->second.front(), "/");
if(parts.size() > 0) {
first = parts[0].toInt();
if(parts.size() > 1) {
second = parts[1].toInt();
}
d->items[name] = MP4::Item(first, second);
}
}
else if(it->first == "BPM" && !it->second.isEmpty()) {
int value = it->second.front().toInt();
d->items[name] = MP4::Item(value);
}
else if(it->first == "COMPILATION" && !it->second.isEmpty()) {
bool value = (it->second.front().toInt() != 0);
d->items[name] = MP4::Item(value);
}
else {
d->items[name] = it->second;
}
}
else {
ignoredProps.insert(it->first, it->second);
}
}
return ignoredProps;
}
void MP4::Tag::addItem(const String &name, const Item &value)
{
if(!d->items.contains(name)) {
d->items.insert(name, value);
}
else {
debug("MP4: Ignoring duplicate atom \"" + name + "\"");
}
}
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