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(BGI): detect some file types.

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This commit is contained in:
morkt 2018-09-11 17:49:17 +04:00
parent b87eba8f27
commit fa923207e9
1 changed files with 34 additions and 20 deletions
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54
ArcFormats/Ethornell/ArcBGI.cs
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@ -61,7 +61,7 @@ namespace GameRes.Formats.BGI
for (uint i = 0; i < count; ++i)
{
string name = file.View.ReadString (index_offset, 0x10);
var entry = FormatCatalog.Instance.Create<Entry> (name);
var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
entry.Offset = base_offset + file.View.ReadUInt32 (index_offset+0x10);
entry.Size = file.View.ReadUInt32 (index_offset+0x14);
if (!entry.CheckPlacement (file.MaxOffset))
@ -69,29 +69,44 @@ namespace GameRes.Formats.BGI
dir.Add (entry);
index_offset += 0x20;
}
foreach (var entry in dir)
{
if (entry.Name.HasExtension ("_bp"))
entry.Type = "script";
else if (file.View.AsciiEqual (entry.Offset, "CompressedBG"))
entry.Type = "image";
else if (file.View.AsciiEqual (entry.Offset+4, "bw "))
entry.Type = "audio";
}
return new ArcFile (file, this, dir);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var entry_offset = entry.Offset;
var input = new ArcView.Frame (arc.File, entry_offset, entry.Size);
var input = arc.File.CreateStream (entry_offset, entry.Size);
var pent = entry as PackedEntry;
if (null == pent)
return input;
if (!pent.IsPacked)
{
if (pent.Size <= 0x220 || !arc.File.View.AsciiEqual (entry_offset, "DSC FORMAT 1.00\0"))
return input;
pent.IsPacked = true;
pent.UnpackedSize = arc.File.View.ReadUInt32 (entry_offset+0x14);
}
try
{
if (entry.Size > 0x220 && input.AsciiEqual (entry_offset, "DSC FORMAT 1.00\0"))
using (var decoder = new DscDecoder (input))
{
using (var decoder = new DscDecoder (input))
{
decoder.Unpack();
return new BinMemoryStream (decoder.Output, entry.Name);
}
decoder.Unpack();
return new BinMemoryStream (decoder.Output, entry.Name);
}
return new ArcViewStream (input, entry_offset, entry.Size);
}
catch (Exception X)
{
System.Diagnostics.Trace.WriteLine (X.Message, "BgiOpener");
return arc.File.CreateStream (entry.Offset, entry.Size);
return arc.File.CreateStream (entry_offset, entry.Size);
}
}
}
@ -122,7 +137,7 @@ namespace GameRes.Formats.BGI
{
string name = file.View.ReadString (index_offset, 0x60);
var offset = base_offset + file.View.ReadUInt32 (index_offset+0x60);
var entry = new Entry { Name = name, Offset = offset };
var entry = new PackedEntry { Name = name, Offset = offset };
entry.Size = file.View.ReadUInt32 (index_offset+0x64);
if (!entry.CheckPlacement (file.MaxOffset))
return null;
@ -211,24 +226,23 @@ namespace GameRes.Formats.BGI
internal sealed class DscDecoder : BgiDecoderBase
{
byte[] m_output;
uint m_dst_size;
uint m_dec_count;
public byte[] Output { get { return m_output; } }
public uint Length { get { return m_dst_size; } }
public DscDecoder (ArcView.Frame input)
: base (new ArcViewStream (input, input.Offset+0x20, input.Reserved-0x20))
public DscDecoder (IBinaryStream input) : base (input.AsStream)
{
m_magic = (uint)input.ReadUInt16 (input.Offset) << 16;
m_key = input.ReadUInt32 (input.Offset+0x10);
m_dst_size = input.ReadUInt32 (input.Offset+0x14);
m_dec_count = input.ReadUInt32 (input.Offset+0x18);
m_output = new byte[m_dst_size];
m_magic = (uint)input.ReadUInt16() << 16;
input.Position = 0x10;
m_key = input.ReadUInt32();
int output_size = input.ReadInt32();
m_dec_count = input.ReadUInt32();
m_output = new byte[output_size];
}
public void Unpack ()
{
Input.Position = 0x20;
HuffmanCode[] hcodes = new HuffmanCode[512];
HuffmanNode[] hnodes = new HuffmanNode[1023];