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(AImageReader): implemented IImageDecoder interface.

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This commit is contained in:
morkt
2016-10-25 20:57:04 +04:00
parent 7b8f206ae4
commit 4901c2f1d3
2 changed files with 64 additions and 60 deletions
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76
ArcFormats/Cyberworks/ArcDAT.cs
View File

@@ -194,20 +194,24 @@ namespace GameRes.Formats.Cyberworks
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
uint entry_size = entry.Size;
Stream input = arc.File.CreateStream (entry.Offset, entry_size);
Stream input = arc.File.CreateStream (entry.Offset, entry.Size);
var pent = entry as PackedEntry;
if (null != pent && pent.IsPacked)
{
input = new LzssStream (input);
entry_size = pent.UnpackedSize;
}
return input;
}
public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
{
var barc = arc as BellArchive;
if (null == barc || entry.Type != "image" || entry_size < 5)
return input;
if (null == barc || entry.Size < 5)
return base.OpenImage (arc, entry);
var input = arc.OpenBinaryEntry (entry);
try
{
return DecryptImage (input, entry_size, barc.Scheme);
return DecryptImage (input, barc.Scheme);
}
catch
{
@@ -216,47 +220,27 @@ namespace GameRes.Formats.Cyberworks
}
}
protected virtual Stream DecryptImage (Stream input, uint entry_size, AImageScheme scheme)
protected virtual IImageDecoder DecryptImage (IBinaryStream input, AImageScheme scheme)
{
byte[] header = null;
byte type = (byte)input.ReadByte();
int type = input.ReadByte();
if ('c' == type || 'b' == type)
{
header = new byte[5];
header[0] = type;
input.Read (header, 1, 4);
uint img_size = BigEndian.ToUInt32 (header, 1);
if (entry_size - 5 == img_size)
uint img_size = Binary.BigEndian (input.ReadUInt32());
if (input.Length - 5 == img_size)
{
if (input.CanSeek)
input = new StreamRegion (input, 5, img_size);
return input;
input = BinaryStream.FromStream (new StreamRegion (input.AsStream, 5, img_size), input.Name);
}
}
else if (scheme != null && 'a' == type && entry_size > 21)
else if (scheme != null && 'a' == type && input.Length > 21)
{
int id = input.ReadByte();
if (id == scheme.Value2)
{
using (var reader = new AImageReader (input, scheme))
{
reader.Unpack();
return TgaStream.Create (reader.Info, reader.Data, scheme.Flipped);
}
return new AImageReader (input, scheme);
}
header = new byte[2] { type, (byte)id };
}
if (input.CanSeek)
{
input.Position = 0;
}
else
{
if (null == header)
header = new byte[1] { type };
input = new PrefixStream (header, input);
}
return input;
input.Position = 0;
return new ImageStreamDecoder (input);
}
uint DecodeDecimal (ArcView file, long offset)
@@ -419,27 +403,13 @@ namespace GameRes.Formats.Cyberworks
return new BellArchive (file, this, dir, scheme);
}
protected override Stream DecryptImage (Stream input, uint entry_size, AImageScheme scheme)
protected override IImageDecoder DecryptImage (IBinaryStream input, AImageScheme scheme)
{
int id = input.ReadByte();
if (id == scheme.Value2)
{
using (var reader = new AImageReader (input, scheme))
{
reader.Unpack();
return TgaStream.Create (reader.Info, reader.Data, scheme.Flipped);
}
}
if (input.CanSeek)
{
input.Position = 0;
}
else
{
var header = new byte[1] { (byte)id };
input = new PrefixStream (header, input);
}
return input;
return new AImageReader (input, scheme);
input.Position = 0;
return new ImageStreamDecoder (input);
}
byte[] ReadToc (string toc_name)