private static MemoryStream BlteGetData(BinaryReader reader, long size, long uncompressedSize)
{
if (reader.ReadUInt32() != 0x45544C42)
{
throw new InvalidOperationException("Invalid file in archive. Invalid BLTE header");
}
var sizeFrameHeader = reader.ReadUInt32Be();
uint numChunks;
var totalSize = 0L;
if (sizeFrameHeader == 0)
{
numChunks = 1;
totalSize = size - 8;
}
else
{
if (reader.ReadByte() != 0x0F)
{
throw new InvalidOperationException("Unknown error in BLTE: unk1 != 0x0F. This is not good im told.");
}
var sizes = reader.ReadBytes(3);
numChunks = (uint)((sizes[0] << 16) | (sizes[1] >> 8) | sizes[2]);
}
if (numChunks == 0)
{
return(new MemoryStream());
}
var chunks = new BlteChunk[numChunks];
for (var i = 0; i < numChunks; ++i)
{
var chunk = new BlteChunk();
chunks[i] = chunk;
if (sizeFrameHeader != 0)
{
chunk.SizeCompressed = reader.ReadUInt32Be();
chunk.SizeUncompressed = reader.ReadUInt32Be();
reader.BaseStream.Position += 16;
}
else
{
chunk.SizeCompressed = totalSize;
chunk.SizeUncompressed = totalSize - 1;
}
}
var data = new byte[uncompressedSize];
var idx = 0;
for (var i = 0; i < numChunks; ++i)
{
var code = reader.ReadByte();
switch (code)
{
case 0x4E:
{
var numRead = 0;
while (numRead < (int)chunks[i].SizeCompressed - 1)
{
var read = reader.Read(data, idx, (int)(chunks[i].SizeCompressed - 1) - numRead);
numRead += read;
idx += read;
}
break;
}
case 0x5A:
{
if (sizeFrameHeader != 0)
{
var curPos = reader.BaseStream.Position;
reader.BaseStream.Position += 2;
using (var strm = new DeflateStream(reader.BaseStream, CompressionMode.Decompress, true))
{
var numRead = 0;
while (numRead < (int)chunks[i].SizeUncompressed)
{
var read = strm.Read(data, idx, (int)chunks[i].SizeUncompressed - numRead);
numRead += read;
idx += numRead;
}
}
reader.BaseStream.Position = curPos + (chunks[i].SizeCompressed - 1);
}
else
{
reader.BaseStream.Position += 2;
using (var strm = new DeflateStream(reader.BaseStream, CompressionMode.Decompress))
{
var numRemain = uncompressedSize - idx;
while (numRemain > 0)
{
var read = strm.Read(data, idx, (int)numRemain);
numRemain -= read;
if (read == 0)
{
break;
}
}
}
}
}
break;
}
}
return(new MemoryStream(data));
}
private static MemoryStream BlteGetData(BinaryReader reader, long size)
{
if (reader.ReadUInt32() != 0x45544C42)
{
throw new InvalidOperationException("Invalid file in archive. Invalid BLTE header");
}
var sizeFrameHeader = reader.ReadUInt32Be();
uint numChunks;
var totalSize = 0L;
if (sizeFrameHeader == 0)
{
numChunks = 1;
totalSize = size - 8;
}
else
{
if (reader.ReadByte() != 0x0F)
{
throw new InvalidOperationException("Unknown error in BLTE: unk1 != 0x0F. This is not good im told.");
}
var sizes = reader.ReadBytes(3);
numChunks = (uint)((sizes[0] << 16) | (sizes[1] >> 8) | sizes[2]);
}
if (numChunks == 0)
{
return(new MemoryStream());
}
var chunks = new BlteChunk[numChunks];
for (var i = 0; i < numChunks; ++i)
{
var chunk = new BlteChunk();
chunks[i] = chunk;
if (sizeFrameHeader != 0)
{
chunk.SizeCompressed = reader.ReadUInt32Be();
chunk.SizeUncompressed = reader.ReadUInt32Be();
reader.BaseStream.Position += 16;
}
else
{
chunk.SizeCompressed = totalSize;
chunk.SizeUncompressed = totalSize - 1;
}
}
var data = new List <byte>();
for (var i = 0; i < numChunks; ++i)
{
var code = reader.ReadByte();
switch (code)
{
case 0x4E:
{
data.AddRange(reader.ReadBytes((int)(chunks[i].SizeCompressed - 1)));
break;
}
case 0x5A:
{
if (sizeFrameHeader != 0)
{
var curPos = reader.BaseStream.Position;
reader.BaseStream.Position += 2;
using (var strm = new DeflateStream(reader.BaseStream, CompressionMode.Decompress, true))
{
var content = new byte[(int)chunks[i].SizeUncompressed];
var numRead = 0;
while (numRead < content.Length)
{
numRead += strm.Read(content, numRead, content.Length - numRead);
}
data.AddRange(content);
}
reader.BaseStream.Position = curPos + (chunks[i].SizeCompressed - 1);
}
else
{
var content = reader.ReadBytes((int)(chunks[i].SizeCompressed - 1));
using (var inStrm = new MemoryStream(content))
{
inStrm.Position = 2;
using (var strm = new DeflateStream(inStrm, CompressionMode.Decompress))
{
using (var outStrm = new MemoryStream())
{
strm.CopyTo(outStrm);
data.AddRange(outStrm.ToArray());
}
}
}
}
}
break;
}
}
return(new MemoryStream(data.ToArray()));
}
private static MemoryStream BlteGetData(BinaryReader reader, long size)
{
if (reader.ReadUInt32() != 0x45544C42)
throw new InvalidOperationException("Invalid file in archive. Invalid BLTE header");
var sizeFrameHeader = reader.ReadUInt32Be();
uint numChunks;
var totalSize = 0L;
if(sizeFrameHeader == 0)
{
numChunks = 1;
totalSize = size - 8;
}
else
{
if (reader.ReadByte() != 0x0F)
throw new InvalidOperationException("Unknown error in BLTE: unk1 != 0x0F. This is not good im told.");
var sizes = reader.ReadBytes(3);
numChunks = (uint) ((sizes[0] << 16) | (sizes[1] >> 8) | sizes[2]);
}
if (numChunks == 0)
return new MemoryStream();
var chunks = new BlteChunk[numChunks];
for(var i = 0; i < numChunks; ++i)
{
var chunk = new BlteChunk();
chunks[i] = chunk;
if(sizeFrameHeader != 0)
{
chunk.SizeCompressed = reader.ReadUInt32Be();
chunk.SizeUncompressed = reader.ReadUInt32Be();
reader.BaseStream.Position += 16;
}
else
{
chunk.SizeCompressed = totalSize;
chunk.SizeUncompressed = totalSize - 1;
}
}
var data = new List<byte>();
for(var i = 0; i < numChunks; ++i)
{
var code = reader.ReadByte();
switch (code)
{
case 0x4E:
data.AddRange(reader.ReadBytes((int)(chunks[i].SizeCompressed - 1)));
break;
case 0x5A:
{
if (sizeFrameHeader != 0)
{
var curPos = reader.BaseStream.Position;
reader.BaseStream.Position += 2;
using (var strm = new DeflateStream(reader.BaseStream, CompressionMode.Decompress, true))
{
var content = new byte[(int)chunks[i].SizeUncompressed];
var numRead = 0;
while (numRead < content.Length)
{
numRead += strm.Read(content, numRead, content.Length - numRead);
}
data.AddRange(content);
}
reader.BaseStream.Position = curPos + (chunks[i].SizeCompressed - 1);
}
else
{
var content = reader.ReadBytes((int)(chunks[i].SizeCompressed - 1));
using (var inStrm = new MemoryStream(content))
{
inStrm.Position = 2;
using (var strm = new DeflateStream(inStrm, CompressionMode.Decompress))
{
using (var outStrm = new MemoryStream())
{
strm.CopyTo(outStrm);
data.AddRange(outStrm.ToArray());
}
}
}
}
}
break;
}
}
return new MemoryStream(data.ToArray());
}
