1 /**************************************************************************
2 copyright : (C) 2007 by Lukáš Lalinský
3 email : lalinsky@gmail.com
4 **************************************************************************/
6 /***************************************************************************
7 * This library is free software; you can redistribute it and/or modify *
8 * it under the terms of the GNU Lesser General Public License version *
9 * 2.1 as published by the Free Software Foundation. *
11 * This library is distributed in the hope that it will be useful, but *
12 * WITHOUT ANY WARRANTY; without even the implied warranty of *
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
14 * Lesser General Public License for more details. *
16 * You should have received a copy of the GNU Lesser General Public *
17 * License along with this library; if not, write to the Free Software *
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
21 * Alternatively, this file is available under the Mozilla Public *
22 * License Version 1.1. You may obtain a copy of the License at *
23 * http://www.mozilla.org/MPL/ *
24 ***************************************************************************/
34 #include "id3v1genres.h"
36 using namespace TagLib;
38 class MP4::Tag::TagPrivate
41 TagPrivate() : file(0), atoms(0) {}
48 MP4::Tag::Tag(TagLib::File *file, MP4::Atoms *atoms)
54 MP4::Atom *ilst = atoms->find("moov", "udta", "meta", "ilst");
56 //debug("Atom moov.udta.meta.ilst not found.");
60 for(unsigned int i = 0; i < ilst->children.size(); i++) {
61 MP4::Atom *atom = ilst->children[i];
62 file->seek(atom->offset + 8);
63 if(atom->name == "----") {
64 parseFreeForm(atom, file);
66 else if(atom->name == "trkn" || atom->name == "disk") {
67 parseIntPair(atom, file);
69 else if(atom->name == "cpil" || atom->name == "pgap" || atom->name == "pcst") {
70 parseBool(atom, file);
72 else if(atom->name == "tmpo") {
75 else if(atom->name == "gnre") {
76 parseGnre(atom, file);
78 else if(atom->name == "covr") {
79 parseCovr(atom, file);
82 parseText(atom, file);
93 MP4::Tag::parseData(MP4::Atom *atom, TagLib::File *file, int expectedFlags, bool freeForm)
95 ByteVectorList result;
96 ByteVector data = file->readBlock(atom->length - 8);
99 while(pos < data.size()) {
100 int length = data.mid(pos, 4).toUInt();
101 ByteVector name = data.mid(pos + 4, 4);
102 int flags = data.mid(pos + 8, 4).toUInt();
103 if(freeForm && i < 2) {
104 if(i == 0 && name != "mean") {
105 debug("MP4: Unexpected atom \"" + name + "\", expecting \"mean\"");
108 else if(i == 1 && name != "name") {
109 debug("MP4: Unexpected atom \"" + name + "\", expecting \"name\"");
112 result.append(data.mid(pos + 12, length - 12));
116 debug("MP4: Unexpected atom \"" + name + "\", expecting \"data\"");
119 if(expectedFlags == -1 || flags == expectedFlags) {
120 result.append(data.mid(pos + 16, length - 16));
130 MP4::Tag::parseInt(MP4::Atom *atom, TagLib::File *file)
132 ByteVectorList data = parseData(atom, file);
134 d->items.insert(atom->name, (int)data[0].toShort());
139 MP4::Tag::parseGnre(MP4::Atom *atom, TagLib::File *file)
141 ByteVectorList data = parseData(atom, file);
143 int idx = (int)data[0].toShort();
144 if(!d->items.contains("\251gen") && idx > 0) {
145 d->items.insert("\251gen", StringList(ID3v1::genre(idx - 1)));
151 MP4::Tag::parseIntPair(MP4::Atom *atom, TagLib::File *file)
153 ByteVectorList data = parseData(atom, file);
155 int a = data[0].mid(2, 2).toShort();
156 int b = data[0].mid(4, 2).toShort();
157 d->items.insert(atom->name, MP4::Item(a, b));
162 MP4::Tag::parseBool(MP4::Atom *atom, TagLib::File *file)
164 ByteVectorList data = parseData(atom, file);
166 bool value = data[0].size() ? data[0][0] != '\0' : false;
167 d->items.insert(atom->name, value);
172 MP4::Tag::parseText(MP4::Atom *atom, TagLib::File *file, int expectedFlags)
174 ByteVectorList data = parseData(atom, file, expectedFlags);
177 for(unsigned int i = 0; i < data.size(); i++) {
178 value.append(String(data[i], String::UTF8));
180 d->items.insert(atom->name, value);
185 MP4::Tag::parseFreeForm(MP4::Atom *atom, TagLib::File *file)
187 ByteVectorList data = parseData(atom, file, 1, true);
188 if(data.size() > 2) {
190 for(unsigned int i = 2; i < data.size(); i++) {
191 value.append(String(data[i], String::UTF8));
193 String name = "----:" + data[0] + ':' + data[1];
194 d->items.insert(name, value);
199 MP4::Tag::parseCovr(MP4::Atom *atom, TagLib::File *file)
201 MP4::CoverArtList value;
202 ByteVector data = file->readBlock(atom->length - 8);
203 unsigned int pos = 0;
204 while(pos < data.size()) {
205 int length = data.mid(pos, 4).toUInt();
206 ByteVector name = data.mid(pos + 4, 4);
207 int flags = data.mid(pos + 8, 4).toUInt();
209 debug("MP4: Unexpected atom \"" + name + "\", expecting \"data\"");
212 if(flags == MP4::CoverArt::PNG || flags == MP4::CoverArt::JPEG) {
213 value.append(MP4::CoverArt(MP4::CoverArt::Format(flags),
214 data.mid(pos + 16, length - 16)));
219 d->items.insert(atom->name, value);
223 MP4::Tag::padIlst(const ByteVector &data, int length)
226 length = ((data.size() + 1023) & ~1023) - data.size();
228 return renderAtom("free", ByteVector(length, '\1'));
232 MP4::Tag::renderAtom(const ByteVector &name, const ByteVector &data)
234 return ByteVector::fromUInt(data.size() + 8) + name + data;
238 MP4::Tag::renderData(const ByteVector &name, int flags, const ByteVectorList &data)
241 for(unsigned int i = 0; i < data.size(); i++) {
242 result.append(renderAtom("data", ByteVector::fromUInt(flags) + ByteVector(4, '\0') + data[i]));
244 return renderAtom(name, result);
248 MP4::Tag::renderBool(const ByteVector &name, MP4::Item &item)
251 data.append(ByteVector(1, item.toBool() ? '\1' : '\0'));
252 return renderData(name, 0x15, data);
256 MP4::Tag::renderInt(const ByteVector &name, MP4::Item &item)
259 data.append(ByteVector::fromShort(item.toInt()));
260 return renderData(name, 0x15, data);
264 MP4::Tag::renderIntPair(const ByteVector &name, MP4::Item &item)
267 data.append(ByteVector(2, '\0') +
268 ByteVector::fromShort(item.toIntPair().first) +
269 ByteVector::fromShort(item.toIntPair().second) +
270 ByteVector(2, '\0'));
271 return renderData(name, 0x00, data);
275 MP4::Tag::renderIntPairNoTrailing(const ByteVector &name, MP4::Item &item)
278 data.append(ByteVector(2, '\0') +
279 ByteVector::fromShort(item.toIntPair().first) +
280 ByteVector::fromShort(item.toIntPair().second));
281 return renderData(name, 0x00, data);
285 MP4::Tag::renderText(const ByteVector &name, MP4::Item &item, int flags)
288 StringList value = item.toStringList();
289 for(unsigned int i = 0; i < value.size(); i++) {
290 data.append(value[i].data(String::UTF8));
292 return renderData(name, flags, data);
296 MP4::Tag::renderCovr(const ByteVector &name, MP4::Item &item)
299 MP4::CoverArtList value = item.toCoverArtList();
300 for(unsigned int i = 0; i < value.size(); i++) {
301 data.append(renderAtom("data", ByteVector::fromUInt(value[i].format()) +
302 ByteVector(4, '\0') + value[i].data()));
304 return renderAtom(name, data);
308 MP4::Tag::renderFreeForm(const String &name, MP4::Item &item)
310 StringList header = StringList::split(name, ":");
311 if (header.size() != 3) {
312 debug("MP4: Invalid free-form item name \"" + name + "\"");
313 return ByteVector::null;
316 data.append(renderAtom("mean", ByteVector::fromUInt(0) + header[1].data(String::UTF8)));
317 data.append(renderAtom("name", ByteVector::fromUInt(0) + header[2].data(String::UTF8)));
318 StringList value = item.toStringList();
319 for(unsigned int i = 0; i < value.size(); i++) {
320 data.append(renderAtom("data", ByteVector::fromUInt(1) + ByteVector(4, '\0') + value[i].data(String::UTF8)));
322 return renderAtom("----", data);
329 for(MP4::ItemListMap::Iterator i = d->items.begin(); i != d->items.end(); i++) {
330 const String name = i->first;
331 if(name.startsWith("----")) {
332 data.append(renderFreeForm(name, i->second));
334 else if(name == "trkn") {
335 data.append(renderIntPair(name.data(String::Latin1), i->second));
337 else if(name == "disk") {
338 data.append(renderIntPairNoTrailing(name.data(String::Latin1), i->second));
340 else if(name == "cpil" || name == "pgap" || name == "pcst") {
341 data.append(renderBool(name.data(String::Latin1), i->second));
343 else if(name == "tmpo") {
344 data.append(renderInt(name.data(String::Latin1), i->second));
346 else if(name == "covr") {
347 data.append(renderCovr(name.data(String::Latin1), i->second));
349 else if(name.size() == 4){
350 data.append(renderText(name.data(String::Latin1), i->second));
353 debug("MP4: Unknown item name \"" + name + "\"");
356 data = renderAtom("ilst", data);
358 AtomList path = d->atoms->path("moov", "udta", "meta", "ilst");
359 if(path.size() == 4) {
360 saveExisting(data, path);
370 MP4::Tag::updateParents(AtomList &path, long delta, int ignore)
372 for(unsigned int i = 0; i < path.size() - ignore; i++) {
373 d->file->seek(path[i]->offset);
374 long size = d->file->readBlock(4).toUInt();
377 d->file->seek(4, File::Current); // Skip name
378 long long longSize = d->file->readBlock(8).toLongLong();
379 // Seek the offset of the 64-bit size
380 d->file->seek(path[i]->offset + 8);
381 d->file->writeBlock(ByteVector::fromLongLong(longSize + delta));
385 d->file->seek(path[i]->offset);
386 d->file->writeBlock(ByteVector::fromUInt(size + delta));
392 MP4::Tag::updateOffsets(long delta, long offset)
394 MP4::Atom *moov = d->atoms->find("moov");
396 MP4::AtomList stco = moov->findall("stco", true);
397 for(unsigned int i = 0; i < stco.size(); i++) {
398 MP4::Atom *atom = stco[i];
399 if(atom->offset > offset) {
400 atom->offset += delta;
402 d->file->seek(atom->offset + 12);
403 ByteVector data = d->file->readBlock(atom->length - 12);
404 unsigned int count = data.mid(0, 4).toUInt();
405 d->file->seek(atom->offset + 16);
408 long o = data.mid(pos, 4).toUInt();
412 d->file->writeBlock(ByteVector::fromUInt(o));
417 MP4::AtomList co64 = moov->findall("co64", true);
418 for(unsigned int i = 0; i < co64.size(); i++) {
419 MP4::Atom *atom = co64[i];
420 if(atom->offset > offset) {
421 atom->offset += delta;
423 d->file->seek(atom->offset + 12);
424 ByteVector data = d->file->readBlock(atom->length - 12);
425 unsigned int count = data.mid(0, 4).toUInt();
426 d->file->seek(atom->offset + 16);
429 long long o = data.mid(pos, 8).toLongLong();
433 d->file->writeBlock(ByteVector::fromLongLong(o));
439 MP4::Atom *moof = d->atoms->find("moof");
441 MP4::AtomList tfhd = moof->findall("tfhd", true);
442 for(unsigned int i = 0; i < tfhd.size(); i++) {
443 MP4::Atom *atom = tfhd[i];
444 if(atom->offset > offset) {
445 atom->offset += delta;
447 d->file->seek(atom->offset + 9);
448 ByteVector data = d->file->readBlock(atom->offset - 9);
449 unsigned int flags = (ByteVector(1, '\0') + data.mid(0, 3)).toUInt();
451 long long o = data.mid(7, 8).toLongLong();
455 d->file->seek(atom->offset + 16);
456 d->file->writeBlock(ByteVector::fromLongLong(o));
463 MP4::Tag::saveNew(ByteVector &data)
465 data = renderAtom("meta", TagLib::ByteVector(4, '\0') +
466 renderAtom("hdlr", TagLib::ByteVector(8, '\0') + TagLib::ByteVector("mdirappl") + TagLib::ByteVector(9, '\0')) +
467 data + padIlst(data));
469 AtomList path = d->atoms->path("moov", "udta");
470 if(path.size() != 2) {
471 path = d->atoms->path("moov");
472 data = renderAtom("udta", data);
475 long offset = path[path.size() - 1]->offset + 8;
476 d->file->insert(data, offset, 0);
478 updateParents(path, data.size());
479 updateOffsets(data.size(), offset);
483 MP4::Tag::saveExisting(ByteVector &data, AtomList &path)
485 MP4::Atom *ilst = path[path.size() - 1];
486 long offset = ilst->offset;
487 long length = ilst->length;
489 MP4::Atom *meta = path[path.size() - 2];
490 AtomList::Iterator index = meta->children.find(ilst);
492 // check if there is an atom before 'ilst', and possibly use it as padding
493 if(index != meta->children.begin()) {
494 AtomList::Iterator prevIndex = index;
496 MP4::Atom *prev = *prevIndex;
497 if(prev->name == "free") {
498 offset = prev->offset;
499 length += prev->length;
502 // check if there is an atom after 'ilst', and possibly use it as padding
503 AtomList::Iterator nextIndex = index;
505 if(nextIndex != meta->children.end()) {
506 MP4::Atom *next = *nextIndex;
507 if(next->name == "free") {
508 length += next->length;
512 long delta = data.size() - length;
513 if(delta > 0 || (delta < 0 && delta > -8)) {
514 data.append(padIlst(data));
515 delta = data.size() - length;
518 data.append(padIlst(data, -delta - 8));
522 d->file->insert(data, offset, length);
525 updateParents(path, delta, 1);
526 updateOffsets(delta, offset);
531 MP4::Tag::title() const
533 if(d->items.contains("\251nam"))
534 return d->items["\251nam"].toStringList().toString(", ");
539 MP4::Tag::artist() const
541 if(d->items.contains("\251ART"))
542 return d->items["\251ART"].toStringList().toString(", ");
547 MP4::Tag::album() const
549 if(d->items.contains("\251alb"))
550 return d->items["\251alb"].toStringList().toString(", ");
555 MP4::Tag::comment() const
557 if(d->items.contains("\251cmt"))
558 return d->items["\251cmt"].toStringList().toString(", ");
563 MP4::Tag::genre() const
565 if(d->items.contains("\251gen"))
566 return d->items["\251gen"].toStringList().toString(", ");
571 MP4::Tag::year() const
573 if(d->items.contains("\251day"))
574 return d->items["\251day"].toStringList().toString().toInt();
579 MP4::Tag::track() const
581 if(d->items.contains("trkn"))
582 return d->items["trkn"].toIntPair().first;
587 MP4::Tag::setTitle(const String &value)
589 d->items["\251nam"] = StringList(value);
593 MP4::Tag::setArtist(const String &value)
595 d->items["\251ART"] = StringList(value);
599 MP4::Tag::setAlbum(const String &value)
601 d->items["\251alb"] = StringList(value);
605 MP4::Tag::setComment(const String &value)
607 d->items["\251cmt"] = StringList(value);
611 MP4::Tag::setGenre(const String &value)
613 d->items["\251gen"] = StringList(value);
617 MP4::Tag::setYear(uint value)
619 d->items["\251day"] = StringList(String::number(value));
623 MP4::Tag::setTrack(uint value)
625 d->items["trkn"] = MP4::Item(value, 0);
629 MP4::Tag::itemListMap()