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fixed cues updater

This commit is contained in:
Martchus 2015-10-08 22:03:47 +02:00
parent ecacccd3c6
commit 458ee45e81
2 changed files with 13 additions and 8 deletions
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1
matroska/matroskacontainer.cpp
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@ -950,7 +950,6 @@ void MatroskaContainer::internalMakeFile()
}
// write "Cues"-element
if(cuesPresent) {
cuesUpdater.invalidateNotifications();
try {
cuesUpdater.make(outputStream);
} catch(Failure &) {

20
matroska/matroskacues.cpp
View File

@ -153,7 +153,7 @@ bool MatroskaCuePositionUpdater::updateOffsets(uint64 originalOffset, uint64 new
}
/*!
* \brief Sets the relative of the entries with the specified \a originalRelativeOffset and the specified \a referenceOffset to \a newRelativeOffset.
* \brief Sets the relative offset of the entries with the specified \a originalRelativeOffset and the specified \a referenceOffset to \a newRelativeOffset.
* \returns Returns whether the size of the "Cues"-element has been altered.
*/
bool MatroskaCuePositionUpdater::updateRelativeOffsets(uint64 referenceOffset, uint64 originalRelativeOffset, uint64 newRelativeOffset)
@ -174,22 +174,28 @@ bool MatroskaCuePositionUpdater::updateRelativeOffsets(uint64 referenceOffset, u
*/
bool MatroskaCuePositionUpdater::updateSize(EbmlElement *element, int shift)
{
if(!element || shift == 0) {
return shift != 0;
if(!shift) {
// shift is gone
return false;
}
if(!element) {
// there was no parent (shouldn't happen in a normal file structure since the Segment element should
// be parent of the Cues element)
return shift;
}
try {
// get size info
auto &size = m_sizes[element];
uint64 &size = m_sizes.at(element);
// calculate new size
uint64 newSize = shift > 0 ? size + static_cast<uint64>(shift) : size - static_cast<uint64>(shift);
uint64 newSize = shift > 0 ? size + static_cast<uint64>(shift) : size - static_cast<uint64>(-shift);
// shift parent
bool updated = updateSize(element->parent(), shift + static_cast<int>(EbmlElement::calculateSizeDenotationLength(newSize)) - static_cast<int>(EbmlElement::calculateSizeDenotationLength(size)));
// apply new size
size = newSize;
return updated;
} catch(out_of_range &) {
addNotification(NotificationType::Critical, "Size information for element is missing.", "updating index");
return false;
// the element is out of the scope of the cue position updater (likely the Segment element)
return shift;
}
}