public override Stream OpenEntry(ArcFile arc, Entry entry)
{
var ani = (AniEntry)entry;
byte[] key_frame = null;
if (ani.KeyFrame != ani.FrameIndex)
{
var dir = (List <Entry>)arc.Dir;
for (int i = ani.KeyFrame; i < ani.FrameIndex; ++i)
{
var frame = dir[i];
using (var s = arc.File.CreateStream(frame.Offset, frame.Size))
{
var frame_info = Cg.ReadMetaData(s) as CgMetaData;
if (null == frame_info)
{
break;
}
using (var reader = new CgFormat.Reader(s, frame_info, key_frame))
{
reader.Unpack();
key_frame = reader.Data;
}
}
}
}
var input = arc.File.CreateStream(entry.Offset, entry.Size);
CgMetaData info = null;
try
{
info = Cg.ReadMetaData(input) as CgMetaData;
}
catch
{
input.Dispose();
throw;
}
if (null == info)
{
input.Position = 0;
return(input);
}
using (input)
using (var reader = new CgFormat.Reader(input, info, key_frame))
{
reader.Unpack();
return(TgaStream.Create(info, reader.Data));
}
}
public Reader(Stream file, CgMetaData info, byte[] base_image = null)
{
m_type = info.Type;
m_width = (int)info.Width;
m_height = (int)info.Height;
m_left = info.OffsetX;
m_top = info.OffsetY;
m_right = info.Right == 0 ? m_width : info.Right;
m_bottom = info.Bottom == 0 ? m_height : info.Bottom;
m_output = base_image ?? new byte[3 * m_width * m_height];
m_input = new BinaryReader(file, Encoding.ASCII, true);
ShiftTable = InitShiftTable();
if (0 != (info.Type & 7))
{
file.Position = 13;
}
else
{
file.Position = 5;
}
}
public override ImageMetaData ReadMetaData(Stream stream)
{
int sig = stream.ReadByte();
if (sig >= 0x20)
{
return(null);
}
using (var input = new ArcView.Reader(stream))
{
int width = input.ReadInt16();
int height = input.ReadInt16();
if (width <= 0 || height <= 0 || width > 4096 || height > 4096)
{
return(null);
}
var meta = new CgMetaData
{
Width = (uint)width,
Height = (uint)height,
BPP = 24,
Type = sig,
};
if (0 != (sig & 7))
{
meta.OffsetX = input.ReadInt16();
meta.OffsetY = input.ReadInt16();
meta.Right = input.ReadInt16();
meta.Bottom = input.ReadInt16();
if (meta.OffsetX > meta.Right || meta.OffsetY > meta.Bottom ||
meta.Right > width || meta.Bottom > height ||
meta.OffsetX < 0 || meta.OffsetY < 0)
{
return(null);
}
}
return(meta);
}
}
public override ImageMetaData ReadMetaData(IBinaryStream file)
{
int sig = file.ReadByte();
if (sig >= 0x20)
{
return(null);
}
int width = file.ReadInt16();
int height = file.ReadInt16();
if (width <= 0 || height <= 0 || width > 4096 || height > 4096)
{
return(null);
}
var meta = new CgMetaData
{
Width = (uint)width,
Height = (uint)height,
BPP = 24,
Type = sig,
};
if (0 != (sig & 7))
{
meta.OffsetX = file.ReadInt16();
meta.OffsetY = file.ReadInt16();
meta.Right = file.ReadInt16();
meta.Bottom = file.ReadInt16();
if (meta.OffsetX > meta.Right || meta.OffsetY > meta.Bottom ||
meta.Right > width || meta.Bottom > height ||
meta.OffsetX < 0 || meta.OffsetY < 0)
{
return(null);
}
}
return(meta);
}
public Reader(IBinaryStream file, CgMetaData info, byte[] base_image, bool leave_open = false)
{
m_type = info.Type;
m_width = (int)info.Width;
m_height = (int)info.Height;
m_left = info.OffsetX;
m_top = info.OffsetY;
m_right = info.Right == 0 ? m_width : info.Right;
m_bottom = info.Bottom == 0 ? m_height : info.Bottom;
m_output = base_image ?? CreateBackground();
m_input = file;
Info = info;
ShiftTable = InitShiftTable();
if (0 != (info.Type & 7))
{
m_input.Position = 13;
}
else
{
m_input.Position = 5;
}
m_should_dispose = !leave_open;
}
public Reader(IBinaryStream file, CgMetaData info) : this(file, info, null, true)
{
}
public Reader(Stream file, CgMetaData info, byte[] base_image = null)
{
m_type = info.Type;
m_width = (int)info.Width;
m_height = (int)info.Height;
m_left = info.OffsetX;
m_top = info.OffsetY;
m_right = info.Right == 0 ? m_width : info.Right;
m_bottom = info.Bottom == 0 ? m_height : info.Bottom;
m_output = base_image ?? new byte[3*m_width*m_height];
m_input = new BinaryReader (file, Encoding.ASCII, true);
ShiftTable = InitShiftTable();
if (0 != (info.Type & 7))
file.Position = 13;
else
file.Position = 5;
}
public override ImageMetaData ReadMetaData(Stream stream)
{
int sig = stream.ReadByte();
if (sig >= 0x20)
return null;
using (var input = new ArcView.Reader (stream))
{
int width = input.ReadInt16();
int height = input.ReadInt16();
if (width <= 0 || height <= 0 || width > 4096 || height > 4096)
return null;
var meta = new CgMetaData
{
Width = (uint)width,
Height = (uint)height,
BPP = 24,
Type = sig,
};
if (0 != (sig & 7))
{
meta.OffsetX = input.ReadInt16();
meta.OffsetY = input.ReadInt16();
meta.Right = input.ReadInt16();
meta.Bottom = input.ReadInt16();
if (meta.OffsetX > meta.Right || meta.OffsetY > meta.Bottom ||
meta.Right > width || meta.Bottom > height ||
meta.OffsetX < 0 || meta.OffsetY < 0)
return null;
}
return meta;
}
}