void
ASDCP::UMID::MakeUMID(int Type, const UUID& AssetID)
{
// Set the non-varying base of the UMID
static const byte_t UMIDBase[10] = { 0x06, 0x0a, 0x2b, 0x34, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 };
memcpy(m_Value, UMIDBase, 10);
m_Value[10] = Type; // Material Type
m_Value[12] = 0x13; // length
// preserved for compatibility with mfxlib
if( Type > 4 ) m_Value[7] = 5;
m_Value[11] = 0x20; // UUID/UL method, number gen undefined
// Instance Number
m_Value[13] = m_Value[14] = m_Value[15] = 0;
memcpy(&m_Value[16], AssetID.Value(), AssetID.Size());
m_HasValue = true;
}
Result_t
ASDCP::TimedText::DCSubtitleParser::h__SubtitleParser::OpenRead()
{
if ( ! m_Root.ParseString(m_XMLDoc.c_str()) )
return RESULT_FORMAT;
m_TDesc.EncodingName = "UTF-8"; // the XML parser demands UTF-8
m_TDesc.ResourceList.clear();
m_TDesc.ContainerDuration = 0;
const XMLNamespace* ns = m_Root.Namespace();
if ( ns == 0 )
{
DefaultLogSink(). Warn("Document has no namespace name, assuming %s\n", c_dcst_namespace_name);
m_TDesc.NamespaceName = c_dcst_namespace_name;
}
else
{
m_TDesc.NamespaceName = ns->Name();
}
UUID DocID;
if ( ! get_UUID_from_child_element("Id", &m_Root, DocID) )
{
DefaultLogSink(). Error("Id element missing from input document\n");
return RESULT_FORMAT;
}
memcpy(m_TDesc.AssetID, DocID.Value(), DocID.Size());
XMLElement* EditRate = m_Root.GetChildWithName("EditRate");
if ( EditRate == 0 )
{
DefaultLogSink(). Error("EditRate element missing from input document\n");
return RESULT_FORMAT;
}
m_TDesc.EditRate = decode_rational(EditRate->GetBody().c_str());
if ( m_TDesc.EditRate != EditRate_23_98
&& m_TDesc.EditRate != EditRate_24
&& m_TDesc.EditRate != EditRate_25
&& m_TDesc.EditRate != EditRate_30
&& m_TDesc.EditRate != EditRate_48
&& m_TDesc.EditRate != EditRate_50
&& m_TDesc.EditRate != EditRate_60 )
{
DefaultLogSink(). Error("Unexpected EditRate: %d/%d\n",
m_TDesc.EditRate.Numerator, m_TDesc.EditRate.Denominator);
return RESULT_FORMAT;
}
// list of fonts
ElementList FontList;
m_Root.GetChildrenWithName("LoadFont", FontList);
for ( Elem_i i = FontList.begin(); i != FontList.end(); i++ )
{
UUID AssetID;
if ( ! get_UUID_from_element(*i, AssetID) )
{
DefaultLogSink(). Error("LoadFont element does not contain a urn:uuid value as expected.\n");
return RESULT_FORMAT;
}
TimedTextResourceDescriptor TmpResource;
memcpy(TmpResource.ResourceID, AssetID.Value(), UUIDlen);
TmpResource.Type = MT_OPENTYPE;
m_TDesc.ResourceList.push_back(TmpResource);
m_ResourceTypes.insert(ResourceTypeMap_t::value_type(UUID(TmpResource.ResourceID), MT_OPENTYPE));
}
// list of images
ElementList ImageList;
m_Root.GetChildrenWithName("Image", ImageList);
std::set<Kumu::UUID> visited_items;
for ( Elem_i i = ImageList.begin(); i != ImageList.end(); i++ )
{
UUID AssetID;
if ( ! get_UUID_from_element(*i, AssetID) )
{
DefaultLogSink(). Error("Image element does not contain a urn:uuid value as expected.\n");
return RESULT_FORMAT;
}
if ( visited_items.find(AssetID) == visited_items.end() )
{
TimedTextResourceDescriptor TmpResource;
memcpy(TmpResource.ResourceID, AssetID.Value(), UUIDlen);
TmpResource.Type = MT_PNG;
m_TDesc.ResourceList.push_back(TmpResource);
m_ResourceTypes.insert(ResourceTypeMap_t::value_type(UUID(TmpResource.ResourceID), MT_PNG));
visited_items.insert(AssetID);
}
}
// Calculate the timeline duration.
// This is a little ugly because the last element in the file is not necessarily
// the last instance to be displayed, e.g., element n and element n-1 may have the
// same start time but n-1 may have a greater duration making it the last to be seen.
// We must scan the list to accumulate the latest TimeOut value.
ElementList InstanceList;
ElementList::const_iterator ei;
ui32_t end_count = 0;
m_Root.GetChildrenWithName("Subtitle", InstanceList);
if ( InstanceList.empty() )
{
DefaultLogSink(). Error("XML document contains no Subtitle elements.\n");
return RESULT_FORMAT;
}
// assumes edit rate is constrained above
ui32_t TCFrameRate = ( m_TDesc.EditRate == EditRate_23_98 ) ? 24 : m_TDesc.EditRate.Numerator;
S12MTimecode beginTC;
beginTC.SetFPS(TCFrameRate);
XMLElement* StartTime = m_Root.GetChildWithName("StartTime");
if ( StartTime != 0 )
beginTC.DecodeString(StartTime->GetBody());
for ( ei = InstanceList.begin(); ei != InstanceList.end(); ei++ )
{
S12MTimecode tmpTC((*ei)->GetAttrWithName("TimeOut"), TCFrameRate);
if ( end_count < tmpTC.GetFrames() )
end_count = tmpTC.GetFrames();
}
if ( end_count <= beginTC.GetFrames() )
{
DefaultLogSink(). Error("Timed Text file has zero-length timeline.\n");
return RESULT_FORMAT;
}
m_TDesc.ContainerDuration = end_count - beginTC.GetFrames();
return RESULT_OK;
}
