public static final void writeAsBytes(PrimerPack primerPack, ByteBuffer buffer)
throws NullPointerException, InsufficientSpaceException {
if (primerPack == null)
throw new NullPointerException("Cannot write a null primer pack to a buffer.");
if (buffer == null)
throw new NullPointerException("Cannot write a primer pack into a null buffer.");
if (buffer.remaining() < lengthAsBytes(primerPack))
throw new InsufficientSpaceException(
"Insufficient space remaining to write primer pack into given buffer.");
UL key =
(UL)
Forge.makeAUID(
0x0d010201,
(short) 0x0105,
(short) 0x0100,
new byte[] {0x06, 0x0e, 0x2b, 0x34, 0x02, 0x05, 0x01, 0x01});
MXFBuilder.writeKey(key, buffer);
MXFBuilder.writeBERLength(18 * primerPack.countLocalTagEntries() + 8, 4, buffer);
buffer.putInt(primerPack.countLocalTagEntries());
buffer.putInt(18);
for (LocalTagEntry entry : primerPack.getLocalTagEntryBatch()) {
buffer.putShort(entry.getLocalTag());
MXFBuilder.writeKey((UL) entry.getUID(), buffer);
}
}
public static final PrimerPack createFromBytes(ByteBuffer buffer) throws EndOfDataException {
UL key = MXFBuilder.readKey(buffer);
long length = MXFBuilder.readBERLength(buffer);
int preserveLimit = buffer.limit();
PrimerPack primerPack = null;
try {
buffer.limit((int) (buffer.position() + length));
primerPack = (PrimerPack) MXFBuilder.readFixedLengthPack((AUIDImpl) key, buffer);
} finally {
buffer.limit(preserveLimit);
}
return primerPack;
}
public static final long addPropertiesForObject(PrimerPack primerPack, MetadataObject mdObject)
throws NullPointerException {
if (primerPack == null)
throw new NullPointerException("Cannot add local tag entries to a null primer pack.");
if (mdObject == null)
throw new NullPointerException(
"Cannot add local tag entries to a primer pack using a null metadata object.");
ClassDefinition objectsClass = MediaEngine.getClassDefinition(mdObject);
long setLength =
MXFBuilder.lengthOfLocalSet(mdObject)
+ 20l; // Bytes in value plus initial class ID and 4-byte length
for (PropertyDefinition propertyDefinition : objectsClass.getAllPropertyDefinitions()) {
PropertyValue propertyValue = null;
try {
if (propertyDefinition.getIsOptional()) propertyDefinition.getPropertyValue(mdObject);
} catch (IllegalArgumentException iae) {
continue;
} catch (PropertyNotPresentException pnpe) {
continue;
}
primerPack.addLocalTagEntry(propertyDefinition);
TypeDefinition propertyType = propertyDefinition.getTypeDefinition();
switch (propertyType.getTypeCategory()) {
case StrongObjRef:
if (propertyValue == null) propertyValue = propertyDefinition.getPropertyValue(mdObject);
MetadataObject stronglyReferencedObject = (MetadataObject) propertyValue.getValue();
setLength += addPropertiesForObject(primerPack, stronglyReferencedObject);
break;
case Set:
if (propertyValue == null) propertyValue = propertyDefinition.getPropertyValue(mdObject);
TypeDefinition setElementType = ((TypeDefinitionSet) propertyType).getElementType();
if (setElementType instanceof TypeDefinitionStrongObjectReference) {
Set<?> setValues = (Set<?>) propertyValue.getValue();
for (Object value : setValues)
setLength += addPropertiesForObject(primerPack, (MetadataObject) value);
}
break;
case VariableArray:
if (propertyValue == null) propertyValue = propertyDefinition.getPropertyValue(mdObject);
TypeDefinition arrayElementType = ((TypeDefinitionVariableArray) propertyType).getType();
if (arrayElementType instanceof TypeDefinitionStrongObjectReference) {
List<?> arrayValues = (List<?>) propertyValue.getValue();
for (Object value : arrayValues)
setLength += addPropertiesForObject(primerPack, (MetadataObject) value);
}
break;
default:
break;
}
}
// Add local tags defined in the index packs
PrimerPack indexPrimerPack = new IndexPrimerPackImpl();
for (LocalTagEntry tagEntry : indexPrimerPack.getLocalTagEntryBatch()) {
primerPack.addLocalTagEntry(tagEntry);
}
return setLength;
}