/// <summary>
/// Initialise a new FreeImage class from a System.Drawing.Bitmap
/// </summary>
/// <param name="bitmap">The bitmap.</param>
/// <param name="imageFormat">The image format.</param>
/// <exception cref="Exception">Image format \"" + imageFormat.ToString() + "\" is not supported</exception>
public FreeImage(Bitmap bitmap, ImageFormat imageFormat)
{
Internal.FREE_IMAGE_FORMAT fif = ImageFormatToFIF(imageFormat);
if (fif == Internal.FREE_IMAGE_FORMAT.FIF_UNKNOWN)
{
throw new Exception("Image format \"" + imageFormat.ToString() + "\" is not supported");
}
MemoryStream ms = new MemoryStream();
bitmap.Save(ms, imageFormat);
ms.Flush();
byte[] buffer = new byte[((int)(ms.Length - 1)) + 1];
ms.Position = 0;
ms.Read(buffer, 0, (int)ms.Length);
ms.Close();
IntPtr dataPtr = Marshal.AllocHGlobal(buffer.Length);
Marshal.Copy(buffer, 0, dataPtr, buffer.Length);
m_MemPtr = (IntPtr)Internal.FreeImageApi.OpenMemory(dataPtr, buffer.Length);
m_Handle = Internal.FreeImageApi.LoadFromMemory(fif, (uint)m_MemPtr, 0);
}
/// <summary>
/// Initialise a new FreeImage class from a file
/// </summary>
/// <param name="filename">The image filename</param>
/// <exception cref="Exception">Unknown file format</exception>
public FreeImage(string filename)
{
Internal.FREE_IMAGE_FORMAT fif = Internal.FreeImageApi.GetFIFFromFilename(filename);
if (fif == Internal.FREE_IMAGE_FORMAT.FIF_UNKNOWN)
{
throw new Exception("Unknown file format");
}
m_Handle = Internal.FreeImageApi.Load(fif, filename, 0);
m_MemPtr = IntPtr.Zero;
}
/// <summary>
/// Save the image to the specified filename,
/// this method retrevie the destination image
/// format automatically by checking the file extension
/// </summary>
/// <param name="filename">The filename.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
public bool Save(string filename)
{
if (File.Exists(filename))
{
File.Delete(filename);
}
Internal.FREE_IMAGE_FORMAT fif = Internal.FreeImageApi.GetFIFFromFilename(filename);
Internal.FreeImageApi.SetPluginEnabled(fif, true);
return(Internal.FreeImageApi.Save(fif, m_Handle, filename, 0));
}