/// <summary>
/// Deserializes a value which is pointed to by an address.
/// </summary>
/// <param name="reader">The reader.</param>
/// <param name="context">The serialization context to use.</param>
/// <param name="valueType">The type of the value to deserialize.</param>
/// <returns>The deserialized value.</returns>
public override object DeserializeD3DStructure(EndianReader reader, ISerializationContext context, Type valueType)
{
if (context.GetType() != typeof(ResourceDefinitionSerializationContext))
{
throw new Exception($"Invalid context type given resource deserialization");
}
var resourceContext = context as ResourceDefinitionSerializationContext;
var result = Activator.CreateInstance(valueType);
var elementType = valueType.GenericTypeArguments[0];
// Read the pointer
var startOffset = reader.BaseStream.Position;
var address = new CacheAddress(reader.ReadUInt32());
var definitionAddress = reader.ReadUInt32(); // unused
var runtimeAddress = reader.ReadUInt32(); // unused
var nextReader = resourceContext.GetReader(address.Type);
// Seek to it and read the object
nextReader.BaseStream.Position = address.Offset;
var definition = DeserializeValue(nextReader, context, null, elementType);
valueType.GetField("Definition").SetValue(result, definition);
valueType.GetField("AddressType").SetValue(result, address.Type);
reader.BaseStream.Position = startOffset + 0xC;
return(result);
}
public override object DeserializeTagBlock(EndianReader reader, ISerializationContext context, Type valueType)
{
if (context.GetType() != typeof(ResourceDefinitionSerializationContext))
{
throw new Exception($"Invalid context type given resource deserialization");
}
var resourceContext = context as ResourceDefinitionSerializationContext;
var result = Activator.CreateInstance(valueType);
var elementType = valueType.GenericTypeArguments[0];
// Read count and offset
var startOffset = reader.BaseStream.Position;
var count = reader.ReadInt32();
var pointer = new CacheAddress(reader.ReadUInt32());
// Set block address type
valueType.GetField("AddressType").SetValue(result, pointer.Type);
if (count == 0)
{
// Null tag block
reader.BaseStream.Position = startOffset + (Version > CacheVersion.Halo2Vista ? 0xC : 0x8);
return(result);
}
//
// Read each value
//
var nextReader = resourceContext.GetReader(pointer.Type);
nextReader.BaseStream.Position = pointer.Offset;
var methods = valueType.GetMethods();
// select the add method from IList<T> and not IList interfaces
var addMethod = methods.FirstOrDefault(method => method.Name == "Add" & method.ReturnType == typeof(void));
for (var i = 0; i < count; i++)
{
var element = DeserializeValue(nextReader, resourceContext, null, elementType);
addMethod.Invoke(result, new[] { element });
}
reader.BaseStream.Position = startOffset + (Version > CacheVersion.Halo2Vista ? 0xC : 0x8);
return(result);
}
public override TagData DeserializeTagData(EndianReader reader, ISerializationContext context)
{
if (context.GetType() != typeof(ResourceDefinitionSerializationContext))
{
throw new Exception($"Invalid context type given resource deserialization");
}
var resourceContext = context as ResourceDefinitionSerializationContext;
// Read size and pointer
var startOffset = reader.BaseStream.Position;
var size = reader.ReadInt32();
if (Version > CacheVersion.Halo2Vista)
{
reader.BaseStream.Position = startOffset + 0xC;
}
var pointer = reader.ReadUInt32();
if (pointer == 0)
{
// Null data reference
reader.BaseStream.Position = startOffset + (Version > CacheVersion.Halo2Vista ? 0x14 : 0x8);
return(new TagData());
}
var address = new CacheAddress(pointer);
var nextReader = resourceContext.GetReader(address.Type);
nextReader.BaseStream.Position = address.Offset;
// Read the data
var result = new byte[size];
nextReader.Read(result, 0, size);
reader.BaseStream.Position = startOffset + (Version > CacheVersion.Halo2Vista ? 0x14 : 0x8);
// instantiate tagdata and return it
var tagData = new TagData
{
Data = result,
AddressType = address.Type
};
return(tagData);
}
/// <summary>
/// Serializes a tag structure into a context.
/// </summary>
/// <param name="context">The serialization context to use.</param>
/// <param name="tagStructure">The tag structure.</param>
/// <param name="offset">An optional offset to begin serializing at.</param>
public override void Serialize(ISerializationContext context, object tagStructure, uint?offset = null)
{
if (context.GetType() != typeof(ResourceDefinitionSerializationContext))
{
throw new Exception($"Invalid context type given resource deserialization");
}
var resourceContext = context as ResourceDefinitionSerializationContext;
// Serialize the structure to a data block
var info = TagStructure.GetTagStructureInfo(tagStructure.GetType(), Version);
context.BeginSerialize(info);
var tagStream = new MemoryStream();
var structBlock = (ResourceDefinitionSerializationContext.ResourceDefinitionDataBlock)context.CreateBlock();
structBlock.BlockType = resourceContext.InitialAddressType;
structBlock.Writer.Format = Format;
SerializeStruct(context, tagStream, structBlock, info, tagStructure);
// Finalize the block and write all of the tag data out
var mainStructOffset = offset ?? structBlock.Finalize(tagStream);
var data = tagStream.ToArray();
context.EndSerialize(info, data, mainStructOffset);
var mainOffset = resourceContext.MainStructOffset.Offset;
// move over the remaining fixups to the context
foreach (var fixup in structBlock.FixupLocations)
{
fixup.BlockOffset += (uint)mainOffset;
resourceContext.FixupLocations.Add(fixup);
}
foreach (var location in structBlock.InteropLocations)
{
location.Address = new CacheAddress(location.Address.Type, (int)(location.Address.Offset + mainOffset));
resourceContext.InteropLocations.Add(location);
}
}
public override void SerializeTagData(ISerializationContext context, MemoryStream tagStream, IDataBlock block, TagData tagData, TagFieldAttribute valueInfo)
{
if (context.GetType() != typeof(ResourceDefinitionSerializationContext))
{
throw new Exception($"Invalid context type given resource deserialization");
}
if (block.GetType() != typeof(ResourceDefinitionSerializationContext.ResourceDefinitionDataBlock))
{
throw new Exception($"Invalid block type given resource deserialization");
}
var resourceBlock = block as ResourceDefinitionSerializationContext.ResourceDefinitionDataBlock;
var resourceContext = context as ResourceDefinitionSerializationContext;
var writer = block.Writer;
if (tagData == null || tagData.Data == null || tagData.Data.Length == 0)
{
writer.Write(0);
writer.Write(0);
writer.Write(0);
writer.Write(0);
writer.Write(0);
return;
}
CacheAddressType addressType = tagData.AddressType;
int dataOffset = 0; // offset in the data stream to the start of the data
uint blockOffset = (uint)writer.BaseStream.Position + 0xC; // offset to the address pointing to the above relative to the current block.
uint size = 0;
// stream where the byte[] in the data should be written to:
var dataStream = (MemoryStream)resourceContext.GetWriter(addressType).BaseStream;
var data = tagData.Data;
if (data != null && data.Length > 0)
{
// Ensure the block is aligned correctly
var align = Math.Max(DefaultResourceAlign, (valueInfo != null) ? valueInfo.Align : 0);
StreamUtil.Align(dataStream, (int)align);
// Write its data
dataOffset = (int)dataStream.Position;
size = (uint)data.Length;
dataStream.Write(data, 0, data.Length);
StreamUtil.Align(dataStream, DefaultResourceAlign);
}
var dataAddress = new CacheAddress(addressType, dataOffset);
var dataFixup = new ResourceFixupLocation
{
BlockOffset = blockOffset,
Address = dataAddress
};
resourceBlock.FixupLocations.Add(dataFixup);
// this fixup will need to be adjusted when we move the block
// Write the reference data
writer.Write(size);
writer.Write(0);
writer.Write(0);
writer.Write(dataAddress.Value);
writer.Write(0);
}
public override void SerializeD3DStructure(CacheVersion version, ISerializationContext context, MemoryStream tagStream, IDataBlock block, object val, Type valueType)
{
if (context.GetType() != typeof(ResourceDefinitionSerializationContext))
{
throw new Exception($"Invalid context type given resource deserialization");
}
if (block.GetType() != typeof(ResourceDefinitionSerializationContext.ResourceDefinitionDataBlock))
{
throw new Exception($"Invalid block type given resource deserialization");
}
var resourceBlock = block as ResourceDefinitionSerializationContext.ResourceDefinitionDataBlock;
var resourceContext = context as ResourceDefinitionSerializationContext;
var writer = block.Writer;
if (val == null)
{
writer.Write(0);
writer.Write(0);
writer.Write(0);
return;
}
var addressType = (CacheAddressType)valueType.GetField("AddressType").GetValue(val);
var nextStream = (MemoryStream)resourceContext.GetWriter(addressType).BaseStream;
var genericType = valueType.GenericTypeArguments[0];
var def = valueType.GetField("Definition").GetValue(val);
// Serialize the value to a temporary block
var resourceBlock2 = (ResourceDefinitionSerializationContext.ResourceDefinitionDataBlock)context.CreateBlock();
resourceBlock2.BlockType = addressType;
SerializeValue(version, context, tagStream, resourceBlock2, def, null, genericType);
// Finalize the block and write the pointer
var offset = (int)resourceBlock2.Finalize(nextStream);
// find where in the stream the d3dstructure pointer will be written
var blockOffset = (int)writer.BaseStream.Position;
var address = new CacheAddress(addressType, blockOffset);
int structureTypeIndex;
if (genericType == typeof(BitmapDefinition))
{
structureTypeIndex = 2;
}
else if (genericType == typeof(BitmapInterleavedDefinition))
{
structureTypeIndex = 3;
}
else if (genericType == typeof(VertexBufferDefinition))
{
structureTypeIndex = 0;
}
else if (genericType == typeof(IndexBufferDefinition))
{
structureTypeIndex = 1;
}
else
{
throw new Exception();
}
var interopLocation = new ResourceInteropLocation
{
ResourceStructureTypeIndex = structureTypeIndex,
Address = address
};
var fixupLocation = new ResourceFixupLocation
{
Address = new CacheAddress(addressType, offset),
BlockOffset = (uint)blockOffset
};
foreach (var fixup in resourceBlock2.FixupLocations)
{
fixup.BlockOffset += (uint)offset;
resourceContext.FixupLocations.Add(fixup);
}
resourceBlock.FixupLocations.Add(fixupLocation);
resourceBlock.InteropLocations.Add(interopLocation);
writer.Write(address.Value);
writer.Write(0);
writer.Write(0);
}
public override void SerializeTagBlock(CacheVersion version, ISerializationContext context, MemoryStream tagStream, IDataBlock block, object list, Type listType, TagFieldAttribute valueInfo)
{
if (context.GetType() != typeof(ResourceDefinitionSerializationContext))
{
throw new Exception($"Invalid context type given resource deserialization");
}
if (block.GetType() != typeof(ResourceDefinitionSerializationContext.ResourceDefinitionDataBlock))
{
throw new Exception($"Invalid block type given resource deserialization");
}
var resourceBlock = block as ResourceDefinitionSerializationContext.ResourceDefinitionDataBlock;
var resourceContext = context as ResourceDefinitionSerializationContext;
var writer = block.Writer;
var count = 0;
if (list != null)
{
// Use reflection to get the number of elements in the list
var countProperty = listType.GetProperty("Count");
count = (int)countProperty.GetValue(list);
}
if (count == 0)
{
writer.Write(0);
writer.Write(0);
writer.Write(0);
return;
}
var elementType = listType.GenericTypeArguments[0];
CacheAddressType addressType = (CacheAddressType)listType.GetField("AddressType").GetValue(list);
// Serialize each value in the list to a data block
var resourceBlock2 = (ResourceDefinitionSerializationContext.ResourceDefinitionDataBlock)resourceContext.CreateBlock();
resourceBlock2.BlockType = addressType;
var addressTypeStream = (MemoryStream)resourceContext.GetWriter(addressType).BaseStream;
var enumerableList = (System.Collections.IEnumerable)list;
foreach (var val in enumerableList)
{
SerializeValue(version, resourceContext, tagStream, resourceBlock2, val, null, elementType);
}
// Ensure the block is aligned correctly
var align = 0x10;
StreamUtil.Align(resourceBlock2.Stream, align);
// Finalize the block and write the tag block reference using a cache address
var offset = resourceBlock2.Finalize(addressTypeStream); // offset of the data in the tagblock on the actual stream
//var blockOffset = addressTypeStream.Position; // no need to fix that particular fixup later
var address = new CacheAddress(addressType, (int)offset);
var resourceFixup = new ResourceFixupLocation
{
Address = address,
BlockOffset = (uint)writer.BaseStream.Position + 0x4
};
foreach (var fixup in resourceBlock2.FixupLocations)
{
fixup.BlockOffset += offset;
resourceContext.FixupLocations.Add(fixup);
}
foreach (var location in resourceBlock2.InteropLocations)
{
location.Address = new CacheAddress(location.Address.Type, (int)(location.Address.Offset + offset));
resourceContext.InteropLocations.Add(location);
}
resourceBlock.FixupLocations.Add(resourceFixup);
writer.Write(count);
writer.Write(address.Value); // write address as 0, we use the fixups
writer.Write(0);
}