public void Free()
{
if (!IsNull)
{
GDImport.gdFree(mPtr);
mPtr = IntPtr.Zero;
}
}
public bool Save(FileType type, Stream outstream, int parameter)
{
try
{
IntPtr imgDataHandle = IntPtr.Zero;
int len;
try
{
switch (type)
{
case FileType.Jpeg:
imgDataHandle = GDImport.gdImageJpegPtr(this.Handle, out len, parameter);
break;
case FileType.Png:
imgDataHandle = GDImport.gdImagePngPtr(this.Handle, out len);
break;
case FileType.Gd:
imgDataHandle = GDImport.gdImageGdPtr(this.Handle, out len);
break;
case FileType.Gd2:
imgDataHandle = GDImport.gdImageGd2Ptr(this.Handle, 0, GD2_FMT_COMPRESSED, out len);
break;
case FileType.WBMP:
imgDataHandle = GDImport.gdImageGdPtr(this.Handle, out len);
break;
case FileType.Xbm:
case FileType.Xpm:
throw new ApplicationException(type + " not implemented.");
default:
throw new ApplicationException(type + " is an unknown file type.");
}
if (imgDataHandle == IntPtr.Zero)
{
throw new ApplicationException("function Save(FileType type, Stream outstream, int parameter )");
}
byte[] imgData = new byte[len];
Marshal.Copy(imgDataHandle, imgData, 0, len);
MemoryStream img = new MemoryStream(imgData);
int BUFFER = 4096;
byte[] buffer = new byte[BUFFER];
int numBytes;
while ((numBytes = img.Read(buffer, 0, BUFFER)) > 0)
{
outstream.Write(imgData, 0, len);
}
}
finally
{
// 2004-01-10 - Must free memory!! - Kevin Tam
if (imgDataHandle != IntPtr.Zero)
{
GDImport.gdFree(imgDataHandle);
}
}
}
catch (Exception e)
{
throw new ApplicationException("function Save(FileType type, Stream outstream, int parameter ) failed", e);
}
return(true);
}