public static void AssignPositionsForMeta(IList <IResourceBlock> blocks, uint basePosition, out RpfResourcePageFlags pageFlags)
{
// find largest structure
long largestBlockSize = 0;
foreach (var block in blocks)
{
if (largestBlockSize < block.BlockLength)
{
largestBlockSize = block.BlockLength;
}
}
// find minimum page size
long currentPageSize = 0x2000;
while (currentPageSize < largestBlockSize)
{
currentPageSize *= 2;
}
long currentPageCount;
long currentPosition;
while (true)
{
currentPageCount = 0;
currentPosition = 0;
// reset all positions
foreach (var block in blocks)
{
block.FilePosition = -1;
}
foreach (var block in blocks)
{
if (block.FilePosition != -1)
{
throw new Exception("Block was already assigned a position!");
}
// check if new page is necessary...
// if yes, add a new page and align to it
long maxSpace = currentPageCount * currentPageSize - currentPosition;
if (maxSpace < (block.BlockLength + SKIP_SIZE))
{
currentPageCount++;
currentPosition = currentPageSize * (currentPageCount - 1);
}
// set position
block.FilePosition = basePosition + currentPosition;
currentPosition += block.BlockLength; // + SKIP_SIZE; //is padding everywhere really necessary??
// align...
if ((currentPosition % ALIGN_SIZE) != 0)
{
currentPosition += (ALIGN_SIZE - (currentPosition % ALIGN_SIZE));
}
}
// break if everything fits...
if (currentPageCount < 128)
{
break;
}
currentPageSize *= 2;
}
pageFlags = new RpfResourcePageFlags(RpfResourceFileEntry.GetFlagsFromBlocks((uint)currentPageCount, (uint)currentPageSize, 0));
}
public static byte[] Build(ResourceFileBase fileBase, int version, bool compress = true)
{
fileBase.FilePagesInfo = new ResourcePagesInfo();
IList <IResourceBlock> systemBlocks;
IList <IResourceBlock> graphicBlocks;
GetBlocks(fileBase, out systemBlocks, out graphicBlocks);
int systemPageSize = BASE_SIZE;// *4;
int systemPageCount;
AssignPositions(systemBlocks, 0x50000000, ref systemPageSize, out systemPageCount);
int graphicsPageSize = BASE_SIZE;
int graphicsPageCount;
AssignPositions(graphicBlocks, 0x60000000, ref graphicsPageSize, out graphicsPageCount);
//fileBase.FilePagesInfo.SystemPagesCount = 0;
//if (systemPageCount > 0)
// fileBase.FilePagesInfo.SystemPagesCount = 1; // (byte)systemPageCount; //1
fileBase.FilePagesInfo.SystemPagesCount = (byte)systemPageCount;
fileBase.FilePagesInfo.GraphicsPagesCount = (byte)graphicsPageCount;
var systemStream = new MemoryStream();
var graphicsStream = new MemoryStream();
var resourceWriter = new ResourceDataWriter(systemStream, graphicsStream);
resourceWriter.Position = 0x50000000;
foreach (var block in systemBlocks)
{
resourceWriter.Position = block.FilePosition;
var pos_before = resourceWriter.Position;
block.Write(resourceWriter);
var pos_after = resourceWriter.Position;
if ((pos_after - pos_before) != block.BlockLength)
{
throw new Exception("error in system length");
}
}
resourceWriter.Position = 0x60000000;
foreach (var block in graphicBlocks)
{
resourceWriter.Position = block.FilePosition;
var pos_before = resourceWriter.Position;
block.Write(resourceWriter);
var pos_after = resourceWriter.Position;
if ((pos_after - pos_before) != block.BlockLength)
{
throw new Exception("error in graphics length");
}
}
var sysDataSize = systemPageCount * systemPageSize;
var sysData = new byte[sysDataSize];
systemStream.Flush();
systemStream.Position = 0;
systemStream.Read(sysData, 0, (int)systemStream.Length);
var gfxDataSize = graphicsPageCount * graphicsPageSize;
var gfxData = new byte[gfxDataSize];
graphicsStream.Flush();
graphicsStream.Position = 0;
graphicsStream.Read(gfxData, 0, (int)graphicsStream.Length);
uint uv = (uint)version;
uint sv = (uv >> 4) & 0xF;
uint gv = (uv >> 0) & 0xF;
//uint sf = RpfResourceFileEntry.GetFlagsFromSize(sysDataSize, sv);
//uint gf = RpfResourceFileEntry.GetFlagsFromSize(gfxDataSize, gv); //TODO: might be broken...
uint sf = RpfResourceFileEntry.GetFlagsFromBlocks((uint)systemPageCount, (uint)systemPageSize, sv);
uint gf = RpfResourceFileEntry.GetFlagsFromBlocks((uint)graphicsPageCount, (uint)graphicsPageSize, gv);
var tdatasize = sysDataSize + gfxDataSize;
var tdata = new byte[tdatasize];
Buffer.BlockCopy(sysData, 0, tdata, 0, sysDataSize);
Buffer.BlockCopy(gfxData, 0, tdata, sysDataSize, gfxDataSize);
var cdata = compress ? Compress(tdata) : tdata;
var dataSize = 16 + cdata.Length;// sysDataSize + gfxDataSize;
var data = new byte[dataSize];
byte[] h1 = BitConverter.GetBytes((uint)0x37435352);
byte[] h2 = BitConverter.GetBytes((int)version);
byte[] h3 = BitConverter.GetBytes(sf);
byte[] h4 = BitConverter.GetBytes(gf);
Buffer.BlockCopy(h1, 0, data, 0, 4);
Buffer.BlockCopy(h2, 0, data, 4, 4);
Buffer.BlockCopy(h3, 0, data, 8, 4);
Buffer.BlockCopy(h4, 0, data, 12, 4);
Buffer.BlockCopy(cdata, 0, data, 16, cdata.Length);
//Buffer.BlockCopy(sysData, 0, data, 16, sysDataSize);
//Buffer.BlockCopy(gfxData, 0, data, 16 + sysDataSize, gfxDataSize);
return(data);
}
