public BitmapDecoder(InputStream ins,string file)
{
this.width = 0;
this.height = 0;
this.format = null;
try
{
int c1 = ins.Read();
int c2 = ins.Read();
int c3 = ins.Read();
// GIF
if (c1 == 'G' && c2 == 'I' && c3 == 'F')
{
ins.Skip(3);
this.width = this.ReadInt(ins, 2, false);
this.height = this.ReadInt(ins, 2, false);
this.format = "gif";
// JPG
}
else if (c1 == 0xFF && c2 == 0xD8)
{
while (c3 == 255)
{
int marker = ins.Read();
int len = this.ReadInt(ins, 2, true);
if (marker == 192 || marker == 193 || marker == 194)
{
ins.Skip(1);
this.height = this.ReadInt(ins, 2, true);
this.width = this.ReadInt(ins, 2, true);
this.format = "jpeg";
break;
}
ins.Skip(len - 2);
c3 = ins.Read();
}
// PNG
}
else if (c1 == 137 && c2 == 80 && c3 == 78)
{
ins.Skip(15);
this.width = this.ReadInt(ins, 2, true);
ins.Skip(2);
this.height = this.ReadInt(ins, 2, true);
this.format = "png";
// BMP
}
else if (c1 == 66 && c2 == 77)
{
ins.Skip(15);
this.width = this.ReadInt(ins, 2, false);
ins.Skip(2);
this.height = this.ReadInt(ins, 2, false);
this.format = "bmp";
}
else
{
int c4 = ins.Read();
//TIFF
if ((c1 == 'M' && c2 == 'M' && c3 == 0 && c4 == 42) || (c1 == 'I' && c2 == 'I' && c3 == 42 && c4 == 0))
{
bool bigEndian = c1 == 'M';
int ifd;
int entries;
int w = -1, h = -1;
ifd = this.ReadInt(ins, 4, bigEndian);
ins.Skip(ifd - 8);
entries = this.ReadInt(ins, 2, bigEndian);
for (int i = 1; i <= entries; i++)
{
int tag = this.ReadInt(ins, 2, bigEndian);
int fieldType = this.ReadInt(ins, 2, bigEndian);
long count = this.ReadInt(ins, 4, bigEndian);
int valOffset;
if ((fieldType == 3 || fieldType == 8))
{
valOffset = this.ReadInt(ins, 2, bigEndian);
ins.Skip(2);
}
else
{
valOffset = this.ReadInt(ins, 4, bigEndian);
}
if (tag == 256)
{
w = valOffset;
}
else if (tag == 257)
{
h = valOffset;
}
if (w != -1 && h != -1)
{
this.width = w;
this.height = h;
this.format = "tiff";
break;
}
}
}
else
{
this.format = null;
this.width = 0;
this.height = 0;
}
}
ins.Close();
}
catch (FileNotFoundException)
{
Log.DebugWrite("File not found:" + file);
}
catch (IOException)
{
Log.DebugWrite("Error on reading:" + file);
}
if (this.format == null)
{
Log.DebugWrite("Unsuported format !");
}
}
public static LImage CreateImage(InputStream ins)
{
LImage image = null;
try
{
image = new LImage();
image.m_data = Texture2D.FromStream(GL.device, ins);
image.width = image.m_data.Width;
image.height = image.m_data.Height;
image.isExt = true;
image.CheckAlpha();
}
catch (Exception ex)
{
Loon.Utils.Debug.Log.Exception(ex);
}
finally
{
if (ins != null)
{
try
{
ins.Close();
ins = null;
}
catch (Exception)
{
}
}
}
return image;
}
public static byte[] GetDataSource(InputStream ins)
{
if (ins == null)
{
return null;
}
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
byte[] bytes = new byte[8192];
try
{
int read;
while ((read = ins.Read(bytes)) >= 0)
{
byteArrayOutputStream.Write(bytes, 0, read);
}
bytes = byteArrayOutputStream.ToByteArray();
}
catch (IOException)
{
return null;
}
finally
{
try
{
if (byteArrayOutputStream != null)
{
byteArrayOutputStream.Flush();
byteArrayOutputStream = null;
}
if (ins != null)
{
ins.Close();
ins = null;
}
}
catch (IOException)
{
}
}
return bytes;
}