EbmlElement *
kax_file_c::read_one_element() {
if (m_segment_end && (m_in->getFilePointer() >= m_segment_end))
return nullptr;
int upper_lvl_el = 0;
EbmlElement *l1 = m_es->FindNextElement(EBML_CLASS_CONTEXT(KaxSegment), upper_lvl_el, 0xFFFFFFFFL, true);
if (!l1)
return nullptr;
const EbmlCallbacks *callbacks = find_ebml_callbacks(EBML_INFO(KaxSegment), EbmlId(*l1));
if (!callbacks)
callbacks = &EBML_CLASS_CALLBACK(KaxSegment);
EbmlElement *l2 = nullptr;
try {
l1->Read(*m_es.get(), EBML_INFO_CONTEXT(*callbacks), upper_lvl_el, l2, true);
} catch (libebml::CRTError &e) {
mxdebug_if(m_debug_resync, boost::format("exception reading element data: %1% (%2%)\n") % e.what() % e.getError());
m_in->setFilePointer(l1->GetElementPosition() + 1);
delete l1;
return nullptr;
}
unsigned long element_size = get_element_size(l1);
if (m_debug_resync)
mxinfo(boost::format("kax_file::read_one_element(): read element at %1% calculated size %2% stored size %3%\n")
% l1->GetElementPosition() % element_size % (l1->IsFiniteSize() ? (boost::format("%1%") % l1->ElementSize()).str() : std::string("unknown")));
m_in->setFilePointer(l1->GetElementPosition() + element_size, seek_beginning);
return l1;
}
bool
kax_file_c::is_level1_element_id(vint_c id) const {
const EbmlSemanticContext &context = EBML_CLASS_CONTEXT(KaxSegment);
for (size_t segment_idx = 0; EBML_CTX_SIZE(context) > segment_idx; ++segment_idx)
if (EBML_ID_VALUE(EBML_CTX_IDX_ID(context,segment_idx)) == id.m_value)
return true;
return false;
}
bool
kax_file_c::is_level1_element_id(vint_c id) const {
auto &context = EBML_CLASS_CONTEXT(KaxSegment);
for (int segment_idx = 0, end = EBML_CTX_SIZE(context); end > segment_idx; ++segment_idx)
if (EBML_ID_VALUE(EBML_CTX_IDX_ID(context,segment_idx)) == id.m_value)
return true;
return false;
}
