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update_kaguya_to_support_AN20_decrypt

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This commit is contained in:
rewjx
2022-02-13 15:55:43 +08:00
parent d982b65de4
commit 726b416160
1 changed files with 37 additions and 0 deletions
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37
ArcFormats/Kaguya/ArcLINK.cs
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@@ -648,6 +648,7 @@ namespace GameRes.Formats.Kaguya
if (anm_encrypted) if (anm_encrypted)
{ {
table.Add (new Tuple<string, Decryptor> ("AN00", (a, e) => DecryptAn00 (a, e))); table.Add (new Tuple<string, Decryptor> ("AN00", (a, e) => DecryptAn00 (a, e)));
table.Add (new Tuple<string, Decryptor> ("AN20", (a, e) => DecryptAn20 (a, e)));
table.Add (new Tuple<string, Decryptor> ("AN21", (a, e) => DecryptAn21 (a, e))); table.Add (new Tuple<string, Decryptor> ("AN21", (a, e) => DecryptAn21 (a, e)));
table.Add (new Tuple<string, Decryptor> ("PL00", (a, e) => DecryptPL00 (a, e))); table.Add (new Tuple<string, Decryptor> ("PL00", (a, e) => DecryptPL00 (a, e)));
table.Add (new Tuple<string, Decryptor> ("PL10", (a, e) => DecryptPL10 (a, e))); table.Add (new Tuple<string, Decryptor> ("PL10", (a, e) => DecryptPL10 (a, e)));
@@ -690,6 +691,42 @@ namespace GameRes.Formats.Kaguya
frame_offset += size + 8; frame_offset += size + 8;
} }
return new BinMemoryStream (data, entry.Name); return new BinMemoryStream (data, entry.Name);
}
Stream DecryptAn20(LinkArchive arc, LinkEntry entry)
{
var data = arc.File.View.ReadBytes(entry.Offset, entry.Size);
int count = data.ToUInt16(4);
int offset = 8;
for (int i = 0; i < count; ++i)
{
switch (data[offset++])
{
case 0: break;
case 1: offset += 8; break;
case 2:
case 3:
case 4:
case 5: offset += 4; break;
default: return new BinMemoryStream(data, entry.Name);
}
}
count = data.ToUInt16(offset);
offset += 2 + count * 8;
int frame_count = data.ToInt16(offset);
offset += 18;
for(int i = 0; i < frame_count; ++i)
{
offset += 8;
int w = data.ToInt32(offset);
int h = data.ToInt32(offset + 4);
int channels = data.ToInt32(offset + 8);
int frame_size = channels * w * h;
offset += 12;
DecryptData(data, offset, frame_size);
offset += frame_size;
}
return new BinMemoryStream(data, entry.Name);
} }
Stream DecryptAn21 (LinkArchive arc, LinkEntry entry) Stream DecryptAn21 (LinkArchive arc, LinkEntry entry)