public byte[] ReadData(PageType mode, int maxLength)
{
var resourceGestalt = cache.TagIndex.GetGlobalTag("zone").ReadMetadata <cache_file_resource_gestalt>();
var resourceLayoutTable = cache.TagIndex.GetGlobalTag("play").ReadMetadata <cache_file_resource_layout_table>();
var entry = resourceGestalt.ResourceEntries[ResourceIndex];
if (entry.SegmentIndex < 0)
{
throw new InvalidOperationException("Data not found");
}
var segment = resourceLayoutTable.Segments[entry.SegmentIndex];
var useTertiary = mode == PageType.Tertiary || (mode == PageType.Auto && segment.TertiaryPageIndex >= 0);
var useSecondary = mode == PageType.Secondary || (mode == PageType.Auto && segment.SecondaryPageIndex >= 0);
var pageIndex = useTertiary ? segment.TertiaryPageIndex : useSecondary ? segment.SecondaryPageIndex : segment.PrimaryPageIndex;
var segmentOffset = useTertiary ? segment.TertiaryPageOffset : useSecondary ? segment.SecondaryPageOffset : segment.PrimaryPageOffset;
if (pageIndex < 0 || segmentOffset < 0)
{
throw new InvalidOperationException("Data not found");
}
var page = resourceLayoutTable.Pages[pageIndex];
if (mode == PageType.Auto && (page.DataOffset < 0 || page.CompressedSize == 0))
{
pageIndex = segment.PrimaryPageIndex;
segmentOffset = segment.PrimaryPageOffset;
page = resourceLayoutTable.Pages[pageIndex];
}
var targetFile = cache.FileName;
if (page.CacheIndex >= 0)
{
var directory = Directory.GetParent(cache.FileName).FullName;
var mapName = Utils.GetFileName(resourceLayoutTable.SharedCaches[page.CacheIndex].FileName);
targetFile = Path.Combine(directory, mapName);
}
using (var fs = new FileStream(targetFile, FileMode.Open, FileAccess.Read))
using (var reader = new EndianReader(fs, cache.ByteOrder))
{
reader.Seek(cache.CacheType >= CacheType.MccHalo4 ? 1216 : 1152, SeekOrigin.Begin);
var dataTableAddress = reader.ReadUInt32();
reader.Seek(dataTableAddress + page.DataOffset, SeekOrigin.Begin);
return(ContentFactory.GetResourceData(reader, cache.Metadata.ResourceCodec, maxLength, segmentOffset, page.CompressedSize, page.DecompressedSize));
}
}
private byte[] ReadDataHalo3Beta(PageType mode, int maxLength)
{
var resourceGestalt = cache.TagIndex.GetGlobalTag("zone").ReadMetadata <cache_file_resource_gestalt>();
var directory = Directory.GetParent(cache.FileName).FullName;
var entry = resourceGestalt.ResourceEntries[ResourceIndex];
var useSecondary = mode == PageType.Secondary || (mode == PageType.Auto && entry.SecondaryOffset > 0);
var address = useSecondary ? entry.SecondaryOffset : entry.PrimaryOffset;
var size = useSecondary ? entry.SecondarySize : entry.PrimarySize;
var targetFile = entry.CacheIndex == -1 ? cache.FileName : Path.Combine(directory, shared_map);
using (var fs = new FileStream(targetFile, FileMode.Open, FileAccess.Read))
using (var reader = new EndianReader(fs))
{
reader.Seek(address, SeekOrigin.Begin);
return(ContentFactory.GetResourceData(reader, cache.Metadata.ResourceCodec, maxLength, 0, size, size));
}
}
public byte[] ReadData(PageType mode, int maxLength)
{
if (maxLength < 0)
{
throw new ArgumentOutOfRangeException(nameof(maxLength));
}
if (cache.CacheType <= CacheType.Halo3Beta)
{
return(ReadDataHalo3Beta(mode, maxLength));
}
var resourceGestalt = cache.TagIndex.GetGlobalTag("zone").ReadMetadata <cache_file_resource_gestalt>();
var resourceLayoutTable = cache.TagIndex.GetGlobalTag("play").ReadMetadata <cache_file_resource_layout_table>();
var entry = resourceGestalt.ResourceEntries[ResourceIndex];
if (entry.SegmentIndex < 0)
{
throw new InvalidOperationException("Data not found");
}
var segment = resourceLayoutTable.Segments[entry.SegmentIndex];
var useSecondary = mode == PageType.Secondary || (mode == PageType.Auto && segment.SecondaryPageIndex >= 0);
var pageIndex = useSecondary ? segment.SecondaryPageIndex : segment.PrimaryPageIndex;
var segmentOffset = useSecondary ? segment.SecondaryPageOffset : segment.PrimaryPageOffset;
if (pageIndex < 0 || segmentOffset < 0)
{
throw new InvalidOperationException("Data not found");
}
var page = resourceLayoutTable.Pages[pageIndex];
if (mode == PageType.Auto && (page.DataOffset < 0 || page.CompressedSize == 0))
{
pageIndex = segment.PrimaryPageIndex;
segmentOffset = segment.PrimaryPageOffset;
page = resourceLayoutTable.Pages[pageIndex];
}
var targetFile = cache.FileName;
if (page.CacheIndex >= 0)
{
var directory = Directory.GetParent(cache.FileName).FullName;
var mapName = Utils.GetFileName(resourceLayoutTable.SharedCaches[page.CacheIndex].FileName);
targetFile = Path.Combine(directory, mapName);
}
using (var fs = new FileStream(targetFile, FileMode.Open, FileAccess.Read))
using (var reader = new EndianReader(fs, cache.ByteOrder))
{
int dataTableAddress;
switch (cache.CacheType)
{
case CacheType.MccHalo3:
case CacheType.MccHalo3U4:
case CacheType.MccHalo3ODST:
if (page.CacheIndex >= 0)
{
dataTableAddress = 12288; //header size
}
else
{
reader.Seek(1208, SeekOrigin.Begin);
dataTableAddress = reader.ReadInt32();
}
break;
default:
reader.Seek(1136, SeekOrigin.Begin); //xbox
dataTableAddress = reader.ReadInt32();
break;
}
reader.Seek(dataTableAddress + page.DataOffset, SeekOrigin.Begin);
return(ContentFactory.GetResourceData(reader, cache.Metadata.ResourceCodec, maxLength, segmentOffset, page.CompressedSize, page.DecompressedSize));
}
}