/// <summary>
/// Load a new image
/// </summary>
private void _miFileOpen_Click(object sender, System.EventArgs e)
{
RasterCodecs _codecs = null;
CodecsImageInfo imageInfo = null;
try
{
// initialize the codecs object.
_codecs = new RasterCodecs();
// Since we are dealing with large images, we do not want to allocate the entire image. We are only going to load it row by row
_codecs.Options.Load.AllocateImage = false;
_codecs.Options.Load.StoreDataInImage = false;
_codecs.LoadImage += new EventHandler <CodecsLoadImageEventArgs>(codecs_LoadImage);
// load the image
OpenFileDialog openFileDialog = new OpenFileDialog();
openFileDialog.Title = "Open File";
openFileDialog.Multiselect = false;
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
//Check if image is valid for this demo
imageInfo = _codecs.GetInformation(openFileDialog.FileName, false);
if (!IsImageValid(imageInfo))
{
Messager.ShowError(this, "The input image has to be 8-bit Gray scale, 12-bit Gray scale, 16-bit Gray scale, RGB (color), and TopLeft view perspective." +
" This DEMO is not meant to be used with small or palletized images (like GIF, PNG, or 1-bit images)." +
" Use this DEMO to save large dimension images efficiently using JPEG2000 compression.");
return;
}
using (RasterSaveDialog saveDialog = new RasterSaveDialog(_codecs))
{
saveDialog.AutoProcess = false;
saveDialog.Title = "Save As";
saveDialog.ShowFileOptionsBasicJ2kOptions = true;
saveDialog.ShowFileOptionsJ2kOptions = true;
saveDialog.ShowOptions = true;
saveDialog.ShowQualityFactor = true;
saveDialog.ShowFileOptionsProgressive = true;
saveDialog.ShowFileOptionsStamp = true;
saveDialog.QualityFactor = 20;
SetupFormats(saveDialog);
if (saveDialog.ShowDialog(this) != DialogResult.OK)
{
return;
}
_lblFilenameValue.Text = Path.GetFileName(openFileDialog.FileName);
_lblDimensionValue.Text = String.Format("{0} x {1}", imageInfo.Width, imageInfo.Height);
_lblImageBitsPerPixelValue.Text = imageInfo.BitsPerPixel.ToString();
//Get the selected compression type
CodecsCompression selectedCompression;
if (saveDialog.Format == RasterImageFormat.J2k)
{
selectedCompression = CodecsCompression.J2k;
}
else
{
selectedCompression = CodecsCompression.Jp2;
}
RasterByteOrder rasterByteOrder = ((saveDialog.BitsPerPixel == 12) || (saveDialog.BitsPerPixel == 16)) ? RasterByteOrder.Gray : RasterByteOrder.Bgr;
CodecsLoadByteOrder codecsLoadByteOrder = ((saveDialog.BitsPerPixel == 12) || (saveDialog.BitsPerPixel == 16)) ? CodecsLoadByteOrder.Gray : CodecsLoadByteOrder.Bgr;
bytesPerLine = CalculateBytesPerLine(saveDialog.BitsPerPixel, imageInfo.Width);
_codecs.Options.Jpeg.Save.QualityFactor = saveDialog.QualityFactor;
_codecs.Options.Jpeg.Save.Passes = saveDialog.Passes;
_codecs.Options.Jpeg.Save.SaveWithStamp = saveDialog.WithStamp;
_codecs.Options.Jpeg.Save.StampWidth = saveDialog.StampWidth;
_codecs.Options.Jpeg.Save.StampHeight = saveDialog.StampHeight;
_codecs.Options.Jpeg.Save.StampBitsPerPixel = saveDialog.StampBitsPerPixel;
_codecs.Options.Jpeg2000.Save.CompressionControl = saveDialog.FileJ2kOptions.CompressionControl;
_codecs.Options.Jpeg2000.Save.CompressionRatio = saveDialog.FileJ2kOptions.CompressionRatio;
_codecs.Options.Jpeg2000.Save.DecompositionLevels = saveDialog.FileJ2kOptions.DecompositionLevels;
_codecs.Options.Jpeg2000.Save.DerivedQuantization = saveDialog.FileJ2kOptions.DerivedQuantization;
_codecs.Options.Jpeg2000.Save.ImageAreaHorizontalOffset = saveDialog.FileJ2kOptions.ImageAreaHorizontalOffset;
_codecs.Options.Jpeg2000.Save.ImageAreaVerticalOffset = saveDialog.FileJ2kOptions.ImageAreaVerticalOffset;
_codecs.Options.Jpeg2000.Save.ProgressingOrder = saveDialog.FileJ2kOptions.ProgressingOrder;
_codecs.Options.Jpeg2000.Save.ReferenceTileHeight = saveDialog.FileJ2kOptions.ReferenceTileHeight;
_codecs.Options.Jpeg2000.Save.ReferenceTileWidth = saveDialog.FileJ2kOptions.ReferenceTileWidth;
_codecs.Options.Jpeg2000.Save.RegionOfInterest = saveDialog.FileJ2kOptions.RegionOfInterest;
_codecs.Options.Jpeg2000.Save.RegionOfInterestRectangle = saveDialog.FileJ2kOptions.RegionOfInterestRectangle;
_codecs.Options.Jpeg2000.Save.RegionOfInterestWeight = saveDialog.FileJ2kOptions.RegionOfInterestWeight;
_codecs.Options.Jpeg2000.Save.TargetFileSize = saveDialog.FileJ2kOptions.TargetFileSize;
_codecs.Options.Jpeg2000.Save.TileHorizontalOffset = saveDialog.FileJ2kOptions.TileHorizontalOffset;
_codecs.Options.Jpeg2000.Save.TileVerticalOffset = saveDialog.FileJ2kOptions.TileVerticalOffset;
_codecs.Options.Jpeg2000.Save.UseColorTransform = saveDialog.FileJ2kOptions.UseColorTransform;
_codecs.Options.Jpeg2000.Save.UseEphMarker = saveDialog.FileJ2kOptions.UseEphMarker;
_codecs.Options.Jpeg2000.Save.UseRegionOfInterest = saveDialog.FileJ2kOptions.UseRegionOfInterest;
_codecs.Options.Jpeg2000.Save.UseSopMarker = saveDialog.FileJ2kOptions.UseSopMarker;
bCancel = false;
bCompressing = true;
UpdateMyControls();
//Start Compressing
using (outputFile = File.Create(saveDialog.FileName))
{
_codecs.StartCompress(imageInfo.Width, imageInfo.Height, saveDialog.BitsPerPixel, rasterByteOrder, RasterViewPerspective.TopLeft, bytesPerLine, IntPtr.Zero, 0, selectedCompression, MyCodecsCompressDataCallback);
_codecs.Load(openFileDialog.FileName, saveDialog.BitsPerPixel, codecsLoadByteOrder, 1, 1);
_codecs.StopCompress();
_lblStatusValue.Text = bCancel ? "Aborted" : "Complete";
}
}
}
}
catch (Exception ex)
{
Messager.ShowError(this, ex);
_lblStatusValue.Text = "Error";
}
finally
{
if (_codecs != null)
{
_codecs.Dispose();
}
if (imageInfo != null)
{
imageInfo.Dispose();
}
bCompressing = false;
UpdateMyControls();
}
}