public override ArcFile TryOpen(ArcView file)
{
if ('B' != file.View.ReadByte(0) || 'M' != file.View.ReadByte(1))
{
return(null);
}
int type = file.View.ReadSByte(0x1C);
if (type != 1 && type != 2)
{
return(null);
}
int count = file.View.ReadInt16(0x3A);
if (!IsSaneCount(count))
{
return(null);
}
uint width = file.View.ReadUInt32(0x12);
uint height = file.View.ReadUInt32(0x16);
int pixel_size = 2 == type ? 4 : 3;
uint bitmap_data_size = width * height * (uint)pixel_size;
var dir = new List <Entry> (count);
long next_offset = file.View.ReadUInt32(0x42);
uint current_offset = 0x46;
string base_name = Path.GetFileNameWithoutExtension(file.Name);
for (int i = 0; i < count; ++i)
{
var entry = new AbmEntry {
Name = string.Format("{0}#{1:D4}", base_name, i),
Type = "image",
Offset = next_offset,
Index = i,
};
if (i + 1 != count)
{
next_offset = file.View.ReadUInt32(current_offset);
current_offset += 4;
}
else
{
next_offset = file.MaxOffset;
}
if (next_offset <= entry.Offset)
{
return(null);
}
entry.Size = (uint)(next_offset - entry.Offset);
if (!entry.CheckPlacement(file.MaxOffset))
{
return(null);
}
entry.UnpackedSize = 0x12 + bitmap_data_size;
dir.Add(entry);
}
var image_info = new AbmImageData
{
Width = (uint)width,
Height = (uint)height,
BPP = pixel_size * 8,
Mode = type,
BaseOffset = (uint)dir[0].Offset,
};
return(new AbmArchive(file, this, dir, image_info));
}
public override ArcFile TryOpen(ArcView file)
{
if ('B' != file.View.ReadByte (0) || 'M' != file.View.ReadByte (1))
return null;
int type = file.View.ReadSByte (0x1C);
if (type != 1 && type != 2)
return null;
int count = file.View.ReadInt16 (0x3A);
if (!IsSaneCount (count))
return null;
uint width = file.View.ReadUInt32 (0x12);
uint height = file.View.ReadUInt32 (0x16);
int pixel_size = 2 == type ? 4 : 3;
uint bitmap_data_size = width*height*(uint)pixel_size;
var dir = new List<Entry> (count);
long next_offset = file.View.ReadUInt32 (0x42);
uint current_offset = 0x46;
string base_name = Path.GetFileNameWithoutExtension (file.Name);
for (int i = 0; i < count; ++i)
{
var entry = new AbmEntry {
Name = string.Format ("{0}#{1:D4}.tga", base_name, i),
Type = "image",
Offset = next_offset,
Index = i,
};
if (i + 1 != count)
{
next_offset = file.View.ReadUInt32 (current_offset);
current_offset += 4;
}
else
next_offset = file.MaxOffset;
if (next_offset <= entry.Offset)
return null;
entry.Size = (uint)(next_offset - entry.Offset);
if (!entry.CheckPlacement (file.MaxOffset))
return null;
entry.UnpackedSize = 0x12 + bitmap_data_size;
dir.Add (entry);
}
var image_info = new AbmImageData
{
Width = (uint)width,
Height = (uint)height,
BPP = pixel_size * 8,
Mode = type,
BaseOffset = (uint)dir[0].Offset,
};
return new AbmArchive (file, this, dir, image_info);
}
