void CommentsFrame::parseFields(const ByteVector &data)
{
if(data.size() < 5) {
debug("A comment frame must contain at least 5 bytes.");
return;
}
d->textEncoding = String::Type(data[0]);
d->language = data.mid(1, 3);
int byteAlign = d->textEncoding == String::Latin1 || d->textEncoding == String::UTF8 ? 1 : 2;
ByteVectorList l = ByteVectorList::split(data.mid(4), textDelimiter(d->textEncoding), byteAlign, 2);
if(l.size() == 2) {
d->description = String(l.front(), d->textEncoding);
d->text = String(l.back(), d->textEncoding);
}
}
void ChapterFrame::parseFields(const ByteVector &data)
{
unsigned int size = data.size();
if(size < 18) {
debug("A CHAP frame must contain at least 18 bytes (1 byte element ID "
"terminated by null and 4x4 bytes for start and end time and offset).");
return;
}
int pos = 0;
unsigned int embPos = 0;
d->elementID = readStringField(data, String::Latin1, &pos).data(String::Latin1);
d->startTime = data.toUInt(pos, true);
pos += 4;
d->endTime = data.toUInt(pos, true);
pos += 4;
d->startOffset = data.toUInt(pos, true);
pos += 4;
d->endOffset = data.toUInt(pos, true);
pos += 4;
size -= pos;
// Embedded frames are optional
if(size < header()->size())
return;
while(embPos < size - header()->size()) {
Frame *frame = FrameFactory::instance()->createFrame(data.mid(pos + embPos), (d->tagHeader != 0));
if(!frame)
return;
// Checks to make sure that frame parsed correctly.
if(frame->size() <= 0) {
delete frame;
return;
}
embPos += frame->size() + header()->size();
addEmbeddedFrame(frame);
}
}
void TableOfContentsFrame::parseFields(const ByteVector &data)
{
TagLib::uint size = data.size();
if(size < 6) {
debug("A CTOC frame must contain at least 6 bytes (1 byte element ID terminated by "
"null, 1 byte flags, 1 byte entry count and 1 byte child element ID terminated "
"by null.");
return;
}
int pos = 0;
TagLib::uint embPos = 0;
d->elementID = readStringField(data, String::Latin1, &pos).data(String::Latin1);
d->isTopLevel = (data.at(pos) & 2) > 0;
d->isOrdered = (data.at(pos++) & 1) > 0;
TagLib::uint entryCount = data.at(pos++);
for(TagLib::uint i = 0; i < entryCount; i++) {
ByteVector childElementID = readStringField(data, String::Latin1, &pos).data(String::Latin1);
d->childElements.append(childElementID);
}
size -= pos;
if(size < header()->size())
return;
while(embPos < size - header()->size()) {
Frame *frame = FrameFactory::instance()->createFrame(data.mid(pos + embPos), d->tagHeader);
if(!frame)
return;
// Checks to make sure that frame parsed correctly.
if(frame->size() <= 0) {
delete frame;
return;
}
embPos += frame->size() + header()->size();
addEmbeddedFrame(frame);
}
}
ByteVector APE::Tag::render() const
{
ByteVector data;
uint itemCount = 0;
{
for(Map<const String, Item>::ConstIterator it = d->itemListMap.begin();
it != d->itemListMap.end(); ++it)
{
data.append(it->second.render());
itemCount++;
}
}
d->footer.setItemCount(itemCount);
d->footer.setTagSize(data.size() + Footer::size());
d->footer.setHeaderPresent(true);
return d->footer.renderHeader() + data + d->footer.renderFooter();
}
bool Registry::EnumRegValues(HKEY hkey)
{
string name;
name.resize(1024);
ByteVector data;
data.resize(1024);
int i=0;
while (true)
{
DWORD cbName= (DWORD)name.size();
DWORD cbData= (DWORD)data.size();
DWORD type;
LONG rc= RegEnumValue(hkey, i, stringptr(name), &cbName, NULL, &type, vectorptr(data), &cbData);
if (rc==ERROR_NO_MORE_ITEMS)
break;
debug("value %s = %s\n", name.c_str(), ValueToString(type, data).c_str());
i++;
}
return true;
}
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;
}
void ID3v2::Tag::read()
{
if(!d->file)
return;
if(!d->file->isOpen())
return;
d->file->seek(d->tagOffset);
d->header.setData(d->file->readBlock(Header::size()));
// If the tag size is 0, then this is an invalid tag (tags must contain at
// least one frame)
if(d->header.tagSize() != 0)
parse(d->file->readBlock(d->header.tagSize()));
// Look for duplicate ID3v2 tags and treat them as an extra blank of this one.
// It leads to overwriting them with zero when saving the tag.
// This is a workaround for some faulty files that have duplicate ID3v2 tags.
// Unfortunately, TagLib itself may write such duplicate tags until v1.10.
unsigned int extraSize = 0;
while(true) {
d->file->seek(d->tagOffset + d->header.completeTagSize() + extraSize);
const ByteVector data = d->file->readBlock(Header::size());
if(data.size() < Header::size() || !data.startsWith(Header::fileIdentifier()))
break;
extraSize += Header(data).completeTagSize();
}
if(extraSize != 0) {
debug("ID3v2::Tag::read() - Duplicate ID3v2 tags found.");
d->header.setTagSize(d->header.tagSize() + extraSize);
}
}
// -------------------------------------------------------------------------------------------------
void DataPlot::mousePressEvent(QMouseEvent* evt)
{
if (evt->button() == Qt::LeftButton || evt->button() == Qt::RightButton)
{
ByteVector data = m_dataView->m_currentData.bytes();
// check if there is data displayed
if (data.size() <= 0)
{
return;
}
double leftDistance = evt->x() - getLeftBegin();
// user clicked in the label area
if (leftDistance < 0)
{
return;
}
// check if the user clicked too much right
if (evt->x() > static_cast<int>(m_xPositions.last()))
{
return;
}
double possibleSamplesPerScreen = static_cast<double>(width()) /
(DEFAULT_POINTS_PER_SAMPLE * m_zoomFactor);
int sample = qRound(leftDistance * possibleSamplesPerScreen / width() + getStartIndex());
if (evt->button() == Qt::LeftButton)
{
setLeftMarker(sample);
}
else
{
setRightMarker(sample);
}
}
}
//==============================================================================
void CC_UnitDriver::read_xdata_memory(uint16_t address, size_t count, ByteVector &data)
{
log_info("programmer, read xdata memory at %04Xh, count: %u", address, count);
uint8_t header[] = {
0x40, 0x55, 0x00, 0x72, 0x56, 0xE5, 0x92, 0xBE, 0x57, 0x75,
0x92, 0x00, 0x74, 0x56, 0xE5, 0x83, 0x76, 0x56, 0xE5, 0x82
};
uint8_t footer[] = { 0xD4, 0x57, 0x90, 0xC2, 0x57, 0x75, 0x92, 0x90, 0x56, 0x74 };
uint8_t load_dtpr[] = { 0xBE, 0x57, 0x90, 0x00, 0x00 };
uint8_t mov_a_dtpr[] = { 0x4E, 0x55, 0xE0 };
uint8_t inc_dtpr[] = { 0x5E, 0x55, 0xA3 };
ByteVector command;
vector_append(command, header, sizeof(header));
load_dtpr[sizeof(load_dtpr) - 1] = address;
load_dtpr[sizeof(load_dtpr) - 2] = address >> 8;
vector_append(command, load_dtpr, sizeof(load_dtpr));
for (size_t i = 0; i < count; i++)
{
if (i == (count - 1) || !((i + 1) % 64))
mov_a_dtpr[0] |= 1;
else
mov_a_dtpr[0] &= ~1;
vector_append(command, mov_a_dtpr, sizeof(mov_a_dtpr));
vector_append(command, inc_dtpr, sizeof(inc_dtpr));
}
vector_append(command, footer, sizeof(footer));
data.resize(count);
usb_device_.bulk_write(endpoint_out_, command.size(), &command[0]);
usb_device_.bulk_read(endpoint_in_, count, &data[0]);
log_info("programmer, read xdata memory, data: %s", binary_to_hex(&data[0], count, " ").c_str());
}
bool FileStream::writeBlock(const ByteVector &data)
{
if(!isOpen()) {
debug("FileStream::writeBlock() -- invalid file.");
return false;
}
if(readOnly()) {
debug("FileStream::writeBlock() -- read only file.");
return false;
}
size_t nbBytes = writeFile(d->file, data);
if (nbBytes != data.size()) {
debug("FileStream::writeBlock() error, 0 bytes written.");
return false;
}
return true;
}
void APE::Item::parse(const ByteVector &data)
{
// 11 bytes is the minimum size for an APE item
if(data.size() < 11) {
debug("APE::Item::parse() -- no data in item");
return;
}
uint valueLength = data.mid(0, 4).toUInt(false);
uint flags = data.mid(4, 4).toUInt(false);
d->key = String(data.mid(8), String::UTF8);
d->value = data.mid(8 + d->key.size() + 1, valueLength);
setReadOnly(flags & 1);
setType(ItemTypes((flags >> 1) & 3));
if(Text == d->type)
d->text = StringList(ByteVectorList::split(d->value, '\0'), String::UTF8);
}
long MPEG::File::nextFrameOffset(long position)
{
ByteVector frameSyncBytes(2, '\0');
while(true) {
seek(position);
const ByteVector buffer = readBlock(bufferSize());
if(buffer.isEmpty())
return -1;
for(unsigned int i = 0; i < buffer.size(); ++i) {
frameSyncBytes[0] = frameSyncBytes[1];
frameSyncBytes[1] = buffer[i];
if(isFrameSync(frameSyncBytes)) {
const Header header(this, position + i - 1, true);
if(header.isValid())
return position + i - 1;
}
}
position += bufferSize();
}
}
void
MP4::Tag::parseCovr(MP4::Atom *atom, TagLib::File *file)
{
MP4::CoverArtList value;
ByteVector data = file->readBlock(atom->length - 8);
unsigned int pos = 0;
while(pos < data.size()) {
int length = data.mid(pos, 4).toUInt();
ByteVector name = data.mid(pos + 4, 4);
int flags = data.mid(pos + 8, 4).toUInt();
if(name != "data") {
debug("MP4: Unexpected atom \"" + name + "\", expecting \"data\"");
return;
}
if(flags == MP4::CoverArt::PNG || flags == MP4::CoverArt::JPEG) {
value.append(MP4::CoverArt(MP4::CoverArt::Format(flags),
data.mid(pos + 16, length - 16)));
}
pos += length;
}
if(value.size() > 0)
d->items.insert(atom->name, value);
}
ByteVector RIFF::Info::Tag::render() const
{
ByteVector data("INFO");
FieldListMap::ConstIterator it = d->fieldListMap.begin();
for(; it != d->fieldListMap.end(); ++it) {
ByteVector text = TagPrivate::stringHandler->render(it->second);
if(text.isEmpty())
continue;
data.append(it->first);
data.append(ByteVector::fromUInt(text.size() + 1, false));
data.append(text);
do {
data.append('\0');
} while(data.size() & 1);
}
if(data.size() == 4)
return ByteVector();
else
return data;
}
ByteVectorList
MP4::Tag::parseData(MP4::Atom *atom, TagLib::File *file, int expectedFlags, bool freeForm)
{
ByteVectorList result;
ByteVector data = file->readBlock(atom->length - 8);
int i = 0;
unsigned int pos = 0;
while(pos < data.size()) {
int length = data.mid(pos, 4).toUInt();
ByteVector name = data.mid(pos + 4, 4);
int flags = data.mid(pos + 8, 4).toUInt();
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(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(data.mid(pos + 16, length - 16));
}
}
pos += length;
i++;
}
return result;
}
long MPEG::File::previousFrameOffset(long position)
{
ByteVector frameSyncBytes(2, '\0');
while(position > 0) {
const long bufferLength = std::min<long>(position, bufferSize());
position -= bufferLength;
seek(position);
const ByteVector buffer = readBlock(bufferLength);
for(int i = buffer.size() - 1; i >= 0; --i) {
frameSyncBytes[1] = frameSyncBytes[0];
frameSyncBytes[0] = buffer[i];
if(isFrameSync(frameSyncBytes)) {
const Header header(this, position + i, true);
if(header.isValid())
return position + i + header.frameLength();
}
}
}
return -1;
}
void
MP4::Tag::parseCovr(MP4::Atom *atom, TagLib::File *file)
{
MP4::CoverArtList value;
ByteVector data = file->readBlock(atom->length - 8);
unsigned int pos = 0;
while(pos < data.size()) {
int length = data.mid(pos, 4).toUInt();
ByteVector name = data.mid(pos + 4, 4);
int flags = data.mid(pos + 8, 4).toUInt();
if(name != "data") {
debug("MP4: Unexpected atom \"" + name + "\", expecting \"data\"");
break;
}
if (flags == 0) { //detect cover format when the cover format bytes are not set
ByteVector picHeader = data.mid(pos+16,9);
const char jpeg[] = {0xff, 0xd8, 0xff, 0xe0 };
const char jfif[] = {0x10, 0x4a, 0x46, 0x49, 0x46 };
const char png[] = {0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, 0x00 };
if ((memcmp(picHeader.data(), png, 9) == 0)) {
flags = MP4::CoverArt::PNG;
} else if ((memcmp(picHeader.data(), jpeg, 4) == 0)) {
flags = MP4::CoverArt::JPEG;
} else if ((memcmp(picHeader.data(), jfif, 5) == 0)) {
flags = MP4::CoverArt::JPEG;
}
}
if(flags == MP4::CoverArt::PNG || flags == MP4::CoverArt::JPEG || flags == 0) {
value.append(MP4::CoverArt(MP4::CoverArt::Format(flags),
data.mid(pos + 16, length - 16)));
}
pos += length;
}
if(value.size() > 0)
d->items.insert(atom->name, value);
}
void ByteVectorStream::insert(const ByteVector &data, long long start, size_t replace)
{
if(data.size() < replace) {
removeBlock(start + data.size(), replace - data.size());
}
else if(data.size() > replace) {
const size_t sizeDiff = data.size() - replace;
truncate(length() + sizeDiff);
const size_t readPosition = static_cast<size_t>(start + replace);
const size_t writePosition = static_cast<size_t>(start + data.size());
::memmove(
d->data.data() + writePosition,
d->data.data() + readPosition,
static_cast<size_t>(length() - sizeDiff - readPosition));
}
seek(start);
writeBlock(data);
}
bool MPC::File::save()
{
if(readOnly()) {
debug("MPC::File::save() -- File is read only.");
return false;
}
// Possibly strip ID3v2 tag
if(!d->ID3v2Header && d->ID3v2Location >= 0) {
removeBlock(d->ID3v2Location, d->ID3v2Size);
if(d->APELocation >= 0)
d->APELocation -= d->ID3v2Size;
if(d->ID3v1Location >= 0)
d->ID3v1Location -= d->ID3v2Size;
d->ID3v2Location = -1;
d->ID3v2Size = 0;
}
// Update ID3v1 tag
if(ID3v1Tag() && !ID3v1Tag()->isEmpty()) {
// ID3v1 tag is not empty. Update the old one or create a new one.
if(d->ID3v1Location >= 0) {
seek(d->ID3v1Location);
}
else {
seek(0, End);
d->ID3v1Location = tell();
}
writeBlock(ID3v1Tag()->render());
}
else {
// ID3v1 tag is empty. Remove the old one.
if(d->ID3v1Location >= 0) {
truncate(d->ID3v1Location);
d->ID3v1Location = -1;
}
}
// Update APE tag
if(APETag() && !APETag()->isEmpty()) {
// APE tag is not empty. Update the old one or create a new one.
if(d->APELocation < 0) {
if(d->ID3v1Location >= 0)
d->APELocation = d->ID3v1Location;
else
d->APELocation = length();
}
const ByteVector data = APETag()->render();
insert(data, d->APELocation, d->APESize);
if(d->ID3v1Location >= 0)
d->ID3v1Location += (static_cast<long>(data.size()) - d->APESize);
d->APESize = data.size();
}
else {
// APE tag is empty. Remove the old one.
if(d->APELocation >= 0) {
removeBlock(d->APELocation, d->APESize);
if(d->ID3v1Location >= 0)
d->ID3v1Location -= d->APESize;
d->APELocation = -1;
d->APESize = 0;
}
}
return true;
}
void FileStream::insert(const ByteVector &data, ulong start, ulong replace)
{
if(!isOpen()) {
debug("File::insert() -- invalid file.");
return;
}
if(readOnly()) {
debug("File::insert() -- read only file.");
return;
}
if(data.size() == replace) {
seek(start);
writeBlock(data);
return;
}
else if(data.size() < replace) {
seek(start);
writeBlock(data);
removeBlock(start + data.size(), replace - data.size());
return;
}
// Woohoo! Faster (about 20%) than id3lib at last. I had to get hardcore
// and avoid TagLib's high level API for rendering just copying parts of
// the file that don't contain tag data.
//
// Now I'll explain the steps in this ugliness:
// First, make sure that we're working with a buffer that is longer than
// the *differnce* in the tag sizes. We want to avoid overwriting parts
// that aren't yet in memory, so this is necessary.
ulong bufferLength = bufferSize();
while(data.size() - replace > bufferLength)
bufferLength += bufferSize();
// Set where to start the reading and writing.
long readPosition = start + replace;
long writePosition = start;
ByteVector buffer = data;
ByteVector aboutToOverwrite(static_cast<uint>(bufferLength));
while(true)
{
// Seek to the current read position and read the data that we're about
// to overwrite. Appropriately increment the readPosition.
seek(readPosition);
const size_t bytesRead = readFile(d->file, aboutToOverwrite);
aboutToOverwrite.resize(bytesRead);
readPosition += bufferLength;
// Check to see if we just read the last block. We need to call clear()
// if we did so that the last write succeeds.
if(bytesRead < bufferLength)
clear();
// Seek to the write position and write our buffer. Increment the
// writePosition.
seek(writePosition);
writeBlock(buffer);
// We hit the end of the file.
if(bytesRead == 0)
break;
writePosition += buffer.size();
// Make the current buffer the data that we read in the beginning.
buffer = aboutToOverwrite;
}
}
bool CHttpServer::parse_request(String &method, String &uri, String &query, HeaderList &headers, String &body )
{
method.clear();
uri.clear();
headers.clear();
body.clear();
size_t s = 0;
ByteVector request;
bool parsing_headers = true;
size_t content_length = 0;
for (;;) {
if (!receive_request(request))
return false;
size_t lim = request.size();
while (parsing_headers) {
size_t e;
for(e = s; e < lim && request[e] != '\r'; ++e);
if (e >= lim - 1) {
// Incomplete line, will read further
break;
}
if (request[e + 1] != '\n') {
if (verbose) RAWLOG_ERROR("Wrong request syntax, line should ends by '\\r\\n'");
return false;
}
String line(&request[s], e - s);
s = e + 2;
if (line.empty()) {
parsing_headers = false;
break;
}
if (uri.empty()) {
// Parse start line
if (!parse_startline(line, method, uri, query) || uri.empty())
return false;
}
else {
Header hdr;
if (!parse_header(line, hdr) || hdr.name.empty())
return false;
headers.push_back(hdr);
String low;
std::transform(hdr.name.begin(), hdr.name.end(), std::back_inserter(low), &::tolower);
if (low == "content-length") {
content_length = ::atoi(hdr.value.c_str());
}
}
}
if (!parsing_headers) {
if (content_length == 0)
return true;
if (lim - s < content_length)
continue;
body.assign(&request[s], &request[s] + content_length);
return true;
}
}
}
ByteVector ID3v2::Tag::render(int version) const
{
// We need to render the "tag data" first so that we have to correct size to
// render in the tag's header. The "tag data" -- everything that is included
// in ID3v2::Header::tagSize() -- includes the extended header, frames and
// padding, but does not include the tag's header or footer.
if(version != 3 && version != 4) {
debug("Unknown ID3v2 version, using ID3v2.4");
version = 4;
}
// TODO: Render the extended header.
// Downgrade the frames that ID3v2.3 doesn't support.
FrameList newFrames;
newFrames.setAutoDelete(true);
FrameList frameList;
if(version == 4) {
frameList = d->frameList;
}
else {
downgradeFrames(&frameList, &newFrames);
}
// Reserve a 10-byte blank space for an ID3v2 tag header.
ByteVector tagData(Header::size(), '\0');
// Loop through the frames rendering them and adding them to the tagData.
for(FrameList::ConstIterator it = frameList.begin(); it != frameList.end(); it++) {
(*it)->header()->setVersion(version);
if((*it)->header()->frameID().size() != 4) {
debug("An ID3v2 frame of unsupported or unknown type \'"
+ String((*it)->header()->frameID()) + "\' has been discarded");
continue;
}
if(!(*it)->header()->tagAlterPreservation()) {
const ByteVector frameData = (*it)->render();
if(frameData.size() == Frame::headerSize((*it)->header()->version())) {
debug("An empty ID3v2 frame \'"
+ String((*it)->header()->frameID()) + "\' has been discarded");
continue;
}
tagData.append(frameData);
}
}
// Compute the amount of padding, and append that to tagData.
// TODO: Should be calculated in long long in taglib2.
long originalSize = d->header.tagSize();
long paddingSize = originalSize - (tagData.size() - Header::size());
if(paddingSize <= 0) {
paddingSize = MinPaddingSize;
}
else {
// Padding won't increase beyond 1% of the file size or 1MB.
long threshold = d->file ? d->file->length() / 100 : 0;
threshold = std::max(threshold, MinPaddingSize);
threshold = std::min(threshold, MaxPaddingSize);
if(paddingSize > threshold)
paddingSize = MinPaddingSize;
}
tagData.resize(static_cast<unsigned int>(tagData.size() + paddingSize), '\0');
// Set the version and data size.
d->header.setMajorVersion(version);
d->header.setTagSize(tagData.size() - Header::size());
// TODO: This should eventually include d->footer->render().
const ByteVector headerData = d->header.render();
std::copy(headerData.begin(), headerData.end(), tagData.begin());
return tagData;
}
void ASF::File::read()
{
if(!isValid())
return;
ByteVector guid = readBlock(16);
if(guid != headerGuid) {
debug("ASF: Not an ASF file.");
setValid(false);
return;
}
d->tag = new ASF::Tag();
d->properties = new ASF::AudioProperties();
bool ok;
d->headerSize = readQWORD(this, &ok);
if(!ok) {
setValid(false);
return;
}
int numObjects = readDWORD(this, &ok);
if(!ok) {
setValid(false);
return;
}
seek(2, Current);
for(int i = 0; i < numObjects; i++) {
guid = readBlock(16);
if(guid.size() != 16) {
setValid(false);
break;
}
long size = (long)readQWORD(this, &ok);
if(!ok) {
setValid(false);
break;
}
FilePrivate::BaseObject *obj;
if(guid == filePropertiesGuid) {
obj = new FilePrivate::FilePropertiesObject();
}
else if(guid == streamPropertiesGuid) {
obj = new FilePrivate::StreamPropertiesObject();
}
else if(guid == contentDescriptionGuid) {
obj = new FilePrivate::ContentDescriptionObject();
}
else if(guid == extendedContentDescriptionGuid) {
obj = new FilePrivate::ExtendedContentDescriptionObject();
}
else if(guid == headerExtensionGuid) {
obj = new FilePrivate::HeaderExtensionObject();
}
else if(guid == codecListGuid) {
obj = new FilePrivate::CodecListObject();
}
else {
if(guid == contentEncryptionGuid ||
guid == extendedContentEncryptionGuid ||
guid == advancedContentEncryptionGuid) {
d->properties->setEncrypted(true);
}
obj = new FilePrivate::UnknownObject(guid);
}
obj->parse(this, size);
d->objects.append(obj);
}
}
bool ASF::File::save()
{
if(readOnly()) {
debug("ASF::File::save() -- File is read only.");
return false;
}
if(!isValid()) {
debug("ASF::File::save() -- Trying to save invalid file.");
return false;
}
if(!d->contentDescriptionObject) {
d->contentDescriptionObject = new FilePrivate::ContentDescriptionObject();
d->objects.append(d->contentDescriptionObject);
}
if(!d->extendedContentDescriptionObject) {
d->extendedContentDescriptionObject = new FilePrivate::ExtendedContentDescriptionObject();
d->objects.append(d->extendedContentDescriptionObject);
}
if(!d->headerExtensionObject) {
d->headerExtensionObject = new FilePrivate::HeaderExtensionObject();
d->objects.append(d->headerExtensionObject);
}
if(!d->metadataObject) {
d->metadataObject = new FilePrivate::MetadataObject();
d->headerExtensionObject->objects.append(d->metadataObject);
}
if(!d->metadataLibraryObject) {
d->metadataLibraryObject = new FilePrivate::MetadataLibraryObject();
d->headerExtensionObject->objects.append(d->metadataLibraryObject);
}
d->extendedContentDescriptionObject->attributeData.clear();
d->metadataObject->attributeData.clear();
d->metadataLibraryObject->attributeData.clear();
const AttributeListMap allAttributes = d->tag->attributeListMap();
for(AttributeListMap::ConstIterator it = allAttributes.begin(); it != allAttributes.end(); ++it) {
const String &name = it->first;
const AttributeList &attributes = it->second;
bool inExtendedContentDescriptionObject = false;
bool inMetadataObject = false;
for(AttributeList::ConstIterator jt = attributes.begin(); jt != attributes.end(); ++jt) {
const Attribute &attribute = *jt;
const bool largeValue = (attribute.dataSize() > 65535);
const bool guid = (attribute.type() == Attribute::GuidType);
if(!inExtendedContentDescriptionObject && !guid && !largeValue && attribute.language() == 0 && attribute.stream() == 0) {
d->extendedContentDescriptionObject->attributeData.append(attribute.render(name));
inExtendedContentDescriptionObject = true;
}
else if(!inMetadataObject && !guid && !largeValue && attribute.language() == 0 && attribute.stream() != 0) {
d->metadataObject->attributeData.append(attribute.render(name, 1));
inMetadataObject = true;
}
else {
d->metadataLibraryObject->attributeData.append(attribute.render(name, 2));
}
}
}
ByteVector data;
for(List<FilePrivate::BaseObject *>::ConstIterator it = d->objects.begin(); it != d->objects.end(); ++it) {
data.append((*it)->render(this));
}
seek(16);
writeBlock(ByteVector::fromUInt64LE(data.size() + 30));
writeBlock(ByteVector::fromUInt32LE(d->objects.size()));
writeBlock(ByteVector("\x01\x02", 2));
insert(data, 30, static_cast<size_t>(d->headerSize - 30));
d->headerSize = data.size() + 30;
return true;
}
ByteVector
MP4::Tag::renderAtom(const ByteVector &name, const ByteVector &data) const
{
return ByteVector::fromUInt(data.size() + 8) + name + data;
}
void ID3v2::Tag::parse(const ByteVector &origData)
{
ByteVector data = origData;
if(d->header.unsynchronisation() && d->header.majorVersion() <= 3)
data = SynchData::decode(data);
uint frameDataPosition = 0;
uint frameDataLength = data.size();
// check for extended header
if(d->header.extendedHeader()) {
if(!d->extendedHeader)
d->extendedHeader = new ExtendedHeader;
d->extendedHeader->setData(data);
if(d->extendedHeader->size() <= data.size()) {
frameDataPosition += d->extendedHeader->size();
frameDataLength -= d->extendedHeader->size();
}
}
// check for footer -- we don't actually need to parse it, as it *must*
// contain the same data as the header, but we do need to account for its
// size.
if(d->header.footerPresent() && Footer::size() <= frameDataLength)
frameDataLength -= Footer::size();
// parse frames
// Make sure that there is at least enough room in the remaining frame data for
// a frame header.
while(frameDataPosition < frameDataLength - Frame::headerSize(d->header.majorVersion())) {
// If the next data is position is 0, assume that we've hit the padding
// portion of the frame data.
if(data.at(frameDataPosition) == 0) {
if(d->header.footerPresent())
debug("Padding *and* a footer found. This is not allowed by the spec.");
d->paddingSize = frameDataLength - frameDataPosition;
return;
}
Frame *frame = d->factory->createFrame(data.mid(frameDataPosition),
&d->header);
if(!frame)
return;
// Checks to make sure that frame parsed correctly.
if(frame->size() <= 0) {
delete frame;
return;
}
frameDataPosition += frame->size() + Frame::headerSize(d->header.majorVersion());
addFrame(frame);
}
}
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();
// Handle creation of multiple pages with appropriate pagination.
if(strategy == Repaginate || totalSize + packets.size() > 255 * 255) {
// SPLITSIZE must be a multiple of 255 in order to get the lacing values right
// create pages of about 8KB each
#define SPLITSIZE (32*255)
int pageIndex = 0;
for(ByteVectorList::ConstIterator it = packets.begin(); it != packets.end(); ++it) {
bool continued = false;
// mark very first packet?
if(firstPacketContinued && it==packets.begin()) {
continued = true;
}
// append to buf
ByteVector packetBuf;
packetBuf.append(*it);
while(packetBuf.size() > SPLITSIZE) {
// output a Page
ByteVector packetForOnePage;
packetForOnePage.resize(SPLITSIZE);
std::copy(packetBuf.begin(), packetBuf.begin() + SPLITSIZE, packetForOnePage.begin());
ByteVectorList packetList;
packetList.append(packetForOnePage);
Page *p = new Page(packetList, streamSerialNumber, firstPage+pageIndex, continued, false, false);
l.append(p);
pageIndex++;
continued = true;
packetBuf = packetBuf.mid(SPLITSIZE);
}
ByteVectorList::ConstIterator jt = it;
++jt;
bool lastPacketInList = (jt == packets.end());
// output a page for the rest (we output one packet per page, so this one should be completed)
ByteVectorList packetList;
packetList.append(packetBuf);
bool isVeryLastPacket = false;
if(containsLastPacket) {
// mark the very last output page as last of stream
ByteVectorList::ConstIterator jt = it;
++jt;
if(jt == packets.end()) {
isVeryLastPacket = true;
}
}
Page *p = new Page(packetList, streamSerialNumber, firstPage+pageIndex, continued,
lastPacketInList ? lastPacketCompleted : true,
isVeryLastPacket);
pageIndex++;
l.append(p);
}
}
else {
Page *p = new Page(packets, streamSerialNumber, firstPage, firstPacketContinued,
lastPacketCompleted, containsLastPacket);
l.append(p);
}
return l;
}
Frame *FrameFactory::createFrame(const ByteVector &origData, Header *tagHeader) const
{
ByteVector data = origData;
uint version = tagHeader->majorVersion();
Frame::Header *header = new Frame::Header(data, version);
ByteVector frameID = header->frameID();
// A quick sanity check -- make sure that the frameID is 4 uppercase Latin1
// characters. Also make sure that there is data in the frame.
if(!frameID.size() == (version < 3 ? 3 : 4) ||
header->frameSize() <= uint(header->dataLengthIndicator() ? 4 : 0) ||
header->frameSize() > data.size())
{
delete header;
return 0;
}
for(ByteVector::ConstIterator it = frameID.begin(); it != frameID.end(); it++) {
if( (*it < 'A' || *it > 'Z') && (*it < '1' || *it > '9') ) {
delete header;
return 0;
}
}
if(version > 3 && (tagHeader->unsynchronisation() || header->unsynchronisation())) {
// Data lengths are not part of the encoded data, but since they are synch-safe
// integers they will be never actually encoded.
ByteVector frameData = data.mid(Frame::Header::size(version), header->frameSize());
frameData = SynchData::decode(frameData);
data = data.mid(0, Frame::Header::size(version)) + frameData;
}
// TagLib doesn't mess with encrypted frames, so just treat them
// as unknown frames.
#if HAVE_ZLIB == 0
if(header->compression()) {
debug("Compressed frames are currently not supported.");
return new UnknownFrame(data, header);
}
#endif
if(header->encryption()) {
debug("Encrypted frames are currently not supported.");
return new UnknownFrame(data, header);
}
if(!updateFrame(header)) {
header->setTagAlterPreservation(true);
return new UnknownFrame(data, header);
}
// updateFrame() might have updated the frame ID.
frameID = header->frameID();
// This is where things get necissarily nasty. Here we determine which
// Frame subclass (or if none is found simply an Frame) based
// on the frame ID. Since there are a lot of possibilities, that means
// a lot of if blocks.
// Text Identification (frames 4.2)
if(frameID.startsWith("T")) {
TextIdentificationFrame *f = frameID != "TXXX"
? new TextIdentificationFrame(data, header)
: new UserTextIdentificationFrame(data, header);
d->setTextEncoding(f);
if(frameID == "TCON")
updateGenre(f);
return f;
}
// Comments (frames 4.10)
if(frameID == "COMM") {
CommentsFrame *f = new CommentsFrame(data, header);
d->setTextEncoding(f);
return f;
}
// Attached Picture (frames 4.14)
if(frameID == "APIC") {
AttachedPictureFrame *f = new AttachedPictureFrame(data, header);
d->setTextEncoding(f);
return f;
}
// ID3v2.2 Attached Picture
if(frameID == "PIC") {
AttachedPictureFrame *f = new AttachedPictureFrameV22(data, header);
d->setTextEncoding(f);
return f;
}
// Relative Volume Adjustment (frames 4.11)
if(frameID == "RVA2")
return new RelativeVolumeFrame(data, header);
// Unique File Identifier (frames 4.1)
if(frameID == "UFID")
return new UniqueFileIdentifierFrame(data, header);
// General Encapsulated Object (frames 4.15)
if(frameID == "GEOB") {
GeneralEncapsulatedObjectFrame *f = new GeneralEncapsulatedObjectFrame(data, header);
d->setTextEncoding(f);
return f;
}
// URL link (frames 4.3)
if(frameID.startsWith("W")) {
if(frameID != "WXXX") {
return new UrlLinkFrame(data, header);
}
else {
UserUrlLinkFrame *f = new UserUrlLinkFrame(data, header);
d->setTextEncoding(f);
return f;
}
}
// Unsynchronized lyric/text transcription (frames 4.8)
if(frameID == "USLT") {
UnsynchronizedLyricsFrame *f = new UnsynchronizedLyricsFrame(data, header);
if(d->useDefaultEncoding)
f->setTextEncoding(d->defaultEncoding);
return f;
}
// Popularimeter (frames 4.17)
if(frameID == "POPM")
return new PopularimeterFrame(data, header);
// Private (frames 4.27)
if(frameID == "PRIV")
return new PrivateFrame(data, header);
return new UnknownFrame(data, header);
}
void Frame::Header::setData(const ByteVector &data, uint version)
{
d->version = version;
switch(version) {
case 0:
case 1:
case 2:
{
// ID3v2.2
if(data.size() < 3) {
debug("You must at least specify a frame ID.");
return;
}
// Set the frame ID -- the first three bytes
d->frameID = data.mid(0, 3);
// If the full header information was not passed in, do not continue to the
// steps to parse the frame size and flags.
if(data.size() < 6) {
d->frameSize = 0;
return;
}
d->frameSize = data.mid(3, 3).toUInt();
break;
}
case 3:
{
// ID3v2.3
if(data.size() < 4) {
debug("You must at least specify a frame ID.");
return;
}
// Set the frame ID -- the first four bytes
d->frameID = data.mid(0, 4);
// If the full header information was not passed in, do not continue to the
// steps to parse the frame size and flags.
if(data.size() < 10) {
d->frameSize = 0;
return;
}
// Set the size -- the frame size is the four bytes starting at byte four in
// the frame header (structure 4)
d->frameSize = data.mid(4, 4).toUInt();
{ // read the first byte of flags
std::bitset<8> flags(data[8]);
d->tagAlterPreservation = flags[7]; // (structure 3.3.1.a)
d->fileAlterPreservation = flags[6]; // (structure 3.3.1.b)
d->readOnly = flags[5]; // (structure 3.3.1.c)
}
{ // read the second byte of flags
std::bitset<8> flags(data[9]);
d->compression = flags[7]; // (structure 3.3.1.i)
d->encryption = flags[6]; // (structure 3.3.1.j)
d->groupingIdentity = flags[5]; // (structure 3.3.1.k)
}
break;
}
case 4:
default:
{
// ID3v2.4
if(data.size() < 4) {
debug("You must at least specify a frame ID.");
return;
}
// Set the frame ID -- the first four bytes
d->frameID = data.mid(0, 4);
// If the full header information was not passed in, do not continue to the
// steps to parse the frame size and flags.
if(data.size() < 10) {
d->frameSize = 0;
return;
}
// Set the size -- the frame size is the four bytes starting at byte four in
// the frame header (structure 4)
d->frameSize = SynchData::toUInt(data.mid(4, 4));
#ifndef NO_ITUNES_HACKS
// iTunes writes v2.4 tags with v2.3-like frame sizes
if(d->frameSize > 127) {
if(!isValidFrameID(data.mid(d->frameSize + 10, 4))) {
unsigned int uintSize = data.mid(4, 4).toUInt();
if(isValidFrameID(data.mid(uintSize + 10, 4))) {
d->frameSize = uintSize;
}
}
}
#endif
{ // read the first byte of flags
std::bitset<8> flags(data[8]);
d->tagAlterPreservation = flags[6]; // (structure 4.1.1.a)
d->fileAlterPreservation = flags[5]; // (structure 4.1.1.b)
d->readOnly = flags[4]; // (structure 4.1.1.c)
}
{ // read the second byte of flags
std::bitset<8> flags(data[9]);
d->groupingIdentity = flags[6]; // (structure 4.1.2.h)
d->compression = flags[3]; // (structure 4.1.2.k)
d->encryption = flags[2]; // (structure 4.1.2.m)
d->unsynchronisation = flags[1]; // (structure 4.1.2.n)
d->dataLengthIndicator = flags[0]; // (structure 4.1.2.p)
}
break;
}
}
}
bool ASF::File::save()
{
if(readOnly()) {
debug("ASF::File::save() -- File is read only.");
return false;
}
if(!isValid()) {
debug("ASF::File::save() -- Trying to save invalid file.");
return false;
}
if(!d->contentDescriptionObject) {
d->contentDescriptionObject = new ContentDescriptionObject();
d->objects.append(d->contentDescriptionObject);
}
if(!d->extendedContentDescriptionObject) {
d->extendedContentDescriptionObject = new ExtendedContentDescriptionObject();
d->objects.append(d->extendedContentDescriptionObject);
}
if(!d->headerExtensionObject) {
d->headerExtensionObject = new HeaderExtensionObject();
d->objects.append(d->headerExtensionObject);
}
if(!d->metadataObject) {
d->metadataObject = new MetadataObject();
d->headerExtensionObject->objects.append(d->metadataObject);
}
if(!d->metadataLibraryObject) {
d->metadataLibraryObject = new MetadataLibraryObject();
d->headerExtensionObject->objects.append(d->metadataLibraryObject);
}
ASF::AttributeListMap::ConstIterator it = d->tag->attributeListMap().begin();
for(; it != d->tag->attributeListMap().end(); it++) {
const String &name = it->first;
const AttributeList &attributes = it->second;
bool inExtendedContentDescriptionObject = false;
bool inMetadataObject = false;
for(unsigned int j = 0; j < attributes.size(); j++) {
const Attribute &attribute = attributes[j];
const bool largeValue = (attribute.dataSize() > 65535);
const bool guid = (attribute.type() == Attribute::GuidType);
if(!inExtendedContentDescriptionObject && !guid && !largeValue && attribute.language() == 0 && attribute.stream() == 0) {
d->extendedContentDescriptionObject->attributeData.append(attribute.render(name));
inExtendedContentDescriptionObject = true;
}
else if(!inMetadataObject && !guid && !largeValue && attribute.language() == 0 && attribute.stream() != 0) {
d->metadataObject->attributeData.append(attribute.render(name, 1));
inMetadataObject = true;
}
else {
d->metadataLibraryObject->attributeData.append(attribute.render(name, 2));
}
}
}
ByteVector data;
for(unsigned int i = 0; i < d->objects.size(); i++) {
data.append(d->objects[i]->render(this));
}
data = headerGuid + ByteVector::fromLongLong(data.size() + 30, false) + ByteVector::fromUInt(d->objects.size(), false) + ByteVector("\x01\x02", 2) + data;
insert(data, 0, (TagLib::ulong)d->size);
return true;
}
