public PegFrame ReadFrame(Stream stream)
{
byte[] data = new byte[0x30];
stream.Read(data, 0, 0x30);
PegFrame frame = (PegFrame)data.BytesToStructure(typeof(PegFrame));
if (BigEndian)
{
frame.Offset = frame.Offset.Swap();
frame.Width = frame.Width.Swap();
frame.Width = 512;
frame.Height = frame.Height.Swap();
frame.Format = frame.Format.Swap();
frame.Unknown0A = frame.Unknown0A.Swap();
//frame.Format = (ushort)frame.Format;
frame.Unknown0C = frame.Unknown0C.Swap();
frame.Frames = frame.Frames.Swap();
frame.Unknown12 = frame.Unknown12.Swap();
frame.Unknown16 = frame.Unknown16.Swap();
frame.UnknownFlags1A = frame.UnknownFlags1A.Swap();
frame.Size = frame.Size.Swap();
frame.Unknown20 = frame.Unknown20.Swap();
frame.Unknown24 = frame.Unknown24.Swap();
frame.Unknown28 = frame.Unknown28.Swap();
frame.Unknown2C = frame.Unknown2C.Swap();
}
return(frame);
}
public void Read(Stream stream)
{
this.Entries.Clear();
uint magic = BigEndian ? stream.ReadU32BE() : stream.ReadU32(); // 00
if (magic != 0x564B4547)
{
throw new NotAPegFileException("header must be GEKV");
}
ushort version = BigEndian ? stream.ReadU16BE() : stream.ReadU16(); // 04
if (version != 10)
{
throw new UnsupportedPackageFileVersionException("only version 10 is supported");
}
Unknown06 = BigEndian ? stream.ReadU16BE() : stream.ReadU16(); // 06
this.FileSize = BigEndian ? stream.ReadU32BE() : stream.ReadU32(); // 08
if (stream.Length != this.FileSize)
{
throw new PegFileException("size of file does not match size in header");
}
this.DataFileSize = BigEndian ? stream.ReadU32BE() : stream.ReadU32(); // 0C
ushort entryCount = BigEndian ? stream.ReadU16BE() : stream.ReadU16(); // 10
this.Unknown12 = BigEndian ? stream.ReadU16BE() : stream.ReadU16(); // 12
ushort frameCount = BigEndian ? stream.ReadU16BE() : stream.ReadU16();; // 14
this.Unknown16 = BigEndian ? stream.ReadU16BE() : stream.ReadU16();; // 16
// Read names
string[] names = new string[entryCount];
stream.Seek(0x18 + (0x30 * frameCount), SeekOrigin.Begin);
for (int i = 0; i < entryCount; i++)
{
names[i] = stream.ReadASCIIZ();
}
int totalFrames = 0;
// Read entries
stream.Seek(0x18, SeekOrigin.Begin);
for (int i = 0; i < entryCount; i++)
{
PegEntry entry = new PegEntry();
entry.Name = names[i];
PegFrame frame = this.ReadFrame(stream);
entry.Frames.Add(frame);
totalFrames++;
if (frame.Frames == 0)
{
throw new Exception("frame count is 0");
}
else if (frame.Frames > 1)
{
/* The first frame of a peg will say how many frames are in the
* image (including itself), all subsequent frames have 1 for the
* frame count.
*/
for (int j = 1; j < frame.Frames; j++)
{
entry.Frames.Add(this.ReadFrame(stream));
totalFrames++;
}
}
this.Entries.Add(entry);
}
if (totalFrames != frameCount)
{
throw new Exception("something bad happened");
}
}