Aspose.Imaging for .NET 17.4 - Release notes
Contents
[
Hide
]
| Key | Summary | Category |
|---|---|---|
| IMAGINGNET-1604 | How to determine if the image is transparent or not | Feature |
IMAGINGNET-2290 |
EMF image is not converted | Bug |
| IMAGINGNET-2280 | Stream is unexpectedly closed in multithreaded environment | Bug |
| IMAGINGNET-2255 | FontSettings.addFontsFolder only loads TTF fonts | Bug |
| IMAGINGNET-2251 | Saving of large PNG images leads to black resulting images | Bug |
| IMAGINGNET-2224 | Buffer overflows in PNG for Compact Framework | Bug |
| IMAGINGNET-2214 | Improve memory usage of DNG file format | Enhancement |
| IMAGINGNET-2211 | Converting SVG to PNG image is not showing proper shapes in PNG file | Bug |
| IMAGINGNET-2150 | Support for converting SVG to PDF | Enhancement |
| IMAGINGNET-2148 | Converting SVG to raster image (PNG in this case) file is showing blank resultant PNG file | Enhancement |
| IMAGINGNET-2140 | Improve quality when resized | Enhancement |
| IMAGINGNET-1968 | TIFF images with JPEG compression should support all possible bits per sample combinations | Enhancement |
| IMAGINGNET-1615 | Implementation of rate control algorithm for Aspose.Imaging Jpeg-2000 codec | Enhancement |
Public API changes:
Added APIs:
Field/Enum Aspose.Imaging.ResizeType.HighQualityResample
Method Aspose.Imaging.RasterImage.ReadArgb32ScanLine(System.Int32)
Method Aspose.Imaging.RasterImage.WriteArgb32ScanLine(System.Int32,System.Int32[])
Property Aspose.Imaging.FileFormats.Dicom.DicomImage.ImageOpacity
Property Aspose.Imaging.FileFormats.Djvu.DjvuImage.ImageOpacity
Property Aspose.Imaging.FileFormats.Gif.GifImage.ImageOpacity
Property Aspose.Imaging.FileFormats.Tiff.TiffImage.ImageOpacity
Property Aspose.Imaging.FileFormats.Webp.WebPImage.ImageOpacity
Property Aspose.Imaging.ImageOptions.Jpeg2000Options.CompressionRatios
Property Aspose.Imaging.ImageOptions.TiffOptions.TileByteCounts
Property Aspose.Imaging.ImageOptions.TiffOptions.TileLength
Property Aspose.Imaging.ImageOptions.TiffOptions.TileOffsets
Property Aspose.Imaging.ImageOptions.TiffOptions.TileWidth
Property Aspose.Imaging.PixelDataFormat.Caption
Property Aspose.Imaging.RasterImage.ImageOpacity
Removed APIs:
Nothing has been removed
Usage examples:
IMAGINGNET-1604 How to determine if the image is transparent or not
string filePath = "Flower.png"; // specify your path
using (PngImage image = (PngImage)Image.Load(filePath))
{
float opacity = image.ImageOpacity; // opacity = 0,470798
Console.WriteLine(opacity);
if (opacity == 0)
{
// The image is fully transparent.
}
}IMAGINGNET-2290 Emf image is not converted properly
var testFolder = @"";
using (var emf = (EmfImage)Image.Load(Path.Combine(testFolder, "input.emf")))
{
var vectorRasterizationOptions = new EmfRasterizationOptions();
vectorRasterizationOptions.PageWidth = emf.Width;
vectorRasterizationOptions.PageHeight = emf.Height;
var pngOptions = new PngOptions
{
VectorRasterizationOptions = vectorRasterizationOptions
};
emf.Save(Path.Combine(testFolder, "output.png"), pngOptions);
}IMAGINGNET-2280 Stream is unexpectedly closed in multi-threaded environment
public void ImagingNet2280Test()
{
string imagePath = @"C:\test\input.jpg";
List<Thread> threads = new List<Thread>();
List<bool> statuses = new List<bool>();
object[] parametersList = new object[] { imagePath, statuses };
for (int i = 0; i < 100; i++)
{
Thread thread = new Thread(new ParameterizedThreadStart(LoadImage));
threads.Add(thread);
thread.Start(parametersList);
}
JoinAllThreads(threads);
foreach (bool status in statuses)
{
if (!status)
{
throw new Exception("Error: The source stream was closed");
}
}
Console.WriteLine("Processing is finished. All streams are opened");
}
private static void LoadImage(object parameters)
{
object[] parametersList = (object[]) parameters;
string filePath = (string) parametersList[0];
List<bool> statuses = (List<bool>)parametersList[1];
using (FileStream stream = File.OpenRead(filePath))
{
using (Image image = Image.Load(stream))
{
}
lock (statuses)
{
statuses.Add(stream.CanRead);
}
}
}
private static void JoinAllThreads(IEnumerable<Thread> threads)
{
foreach (Thread thread in threads)
{
thread.Join();
}
}IMAGINGNET-2255 FontSettings.addFontsFolder only loads TTF fonts
Inorder to verify, please perform following steps:
\1. Remove all fonts “Ms Mincho” from system \2. Download font msmincho.ttc and copy to folder “D:\font” or another \3. Execute the following code
FontSettings.SetFontsFolder(@"D:\Font\");
EmfRecorderGraphics2D graphics = new EmfRecorderGraphics2D(new Rectangle(0,0,150,150),new Size(15000,15000),new Size(150,150) );
Font font = new Font("MS Mincho", 20);
graphics.DrawString("MS Mincho",font, Color.Blue, 0, 50);
using (EmfImage image = graphics.EndRecording())
{
PdfOptions bmpOptions = new PdfOptions();
bmpOptions.VectorRasterizationOptions = new EmfRasterizationOptions()
{
PageHeight = 1000,
PageWidth = 1000,
BackgroundColor = Color.WhiteSmoke
};
image.Save(@"D:\1.pdf",bmpOptions);
}\4. The generated output PDF file will contain text MS Mincho typed in MS Mincho.
\5. Then execute the following code, where FontSettings.SetFontsFolder is disabled.
//FontSettings.SetFontsFolder(@"D:\Font\");
EmfRecorderGraphics2D graphics = new EmfRecorderGraphics2D(new Rectangle(0,0,150,150),new Size(15000,15000),new Size(150,150) );
Font font = new Font("MS Mincho", 20);
graphics.DrawString("MS Mincho",font, Color.Blue, 0, 50);
using (EmfImage image = graphics.EndRecording())
{
PdfOptions bmpOptions = new PdfOptions();
bmpOptions.VectorRasterizationOptions = new EmfRasterizationOptions()
{
PageHeight = 1000,
PageWidth = 1000,
BackgroundColor = Color.WhiteSmoke
};
image.Save(@"D:\2.pdf",bmpOptions);
}IMAGINGNET-2251 Saving of large PNG images leads to black resulting images
string[] fileNames = new string[] { "BigProgressive.png", "big.png" };
string baseDir = @"F:\Large Images";
string outputDir = @"F:\Large Images";
foreach (string fileName in fileNames)
{
using (RasterImage image = (RasterImage)Image.Load(Path.Combine(baseDir, fileName)))
{
image.Save(Path.Combine(outputDir, fileName.Replace(".png", "_result.png")));
}
}IMAGINGNET-2224 Buffer overflow in Png for Compact Framework
string inputFile = @"D:\tiger0.png";
string outputFile = @"D:\tiger0_result.png";
int[] etalonPixels;
int[] actualPixels;
Rectangle etalonBounds;
Rectangle actualBounds;
using (RasterCachedImage image = (RasterCachedImage)Image.Load(inputFile))
{
etalonBounds = image.Bounds;
etalonPixels = image.LoadArgb32Pixels(image.Bounds);
image.Save(outputFile);
}
using (RasterCachedImage image = (RasterCachedImage)Image.Load(outputFile))
{
actualBounds = image.Bounds;
actualPixels = image.LoadArgb32Pixels(image.Bounds);
}
if (!etalonBounds.Equals(actualBounds))
{
throw new Exception(string.Format("Etalon bounds = {0}, Actual bounds = {1}", etalonBounds, actualBounds));
}
if (etalonPixels.Length != actualPixels.Length)
{
throw new Exception(string.Format("Etalon pixel count = {0}, Actual pixel count = {1}", etalonPixels.Length, actualPixels.Length));
}
for (int i = 0; i < etalonPixels.Length; i++)
{
if (actualPixels[i] != etalonPixels[i])
{
throw new Exception(string.Format("Etalon pixel[{2}] = {0}, Actual pixel[{2}] = {1}", etalonPixels[i], actualPixels[i],i));
}
}
Console.WriteLine("The example executed success !");IMAGINGNET-2214 Improve memory usage of DNG file format
string path = @"";
string input = path + "berries-raw.dng";
string output = path + "result.tiff";
BlackBoxTestsController.SetMaxAllocatedBytesCount(1000000000);
using (DngImage image = (DngImage)Image.Load(input))
{
image.Save(output, new TiffOptions(TiffExpectedFormat.TiffJpegYCbCr));
}IMAGINGNET-2211 Converting SVG to PNG image is not showing proper shapes in PNG file
string sourceFilePath = @"input.svg";
string destFilePath = @"result.png";
using (SvgImage image = (SvgImage)Aspose.Imaging.Image.Load(sourceFilePath))
{
SvgRasterizationOptions rasterizationOptions = new SvgRasterizationOptions();
rasterizationOptions.PageWidth = image.Width;
rasterizationOptions.PageHeight = image.Height;
PngOptions pngOptions = new PngOptions();
pngOptions.VectorRasterizationOptions = rasterizationOptions;
image.Save(destFilePath, pngOptions);
}IMAGINGNET-2150 Support for converting SVG to PDF
string sourceFilePath = @"Mozilla_Firefox.svg";
string destFilePath = @"Mozilla_Firefox.pdf";
using (SvgImage image = (SvgImage)Image.Load(sourceFilePath))
{
PdfOptions pdfOptions = new PdfOptions();
SvgRasterizationOptions svgRasterizationOptions = new SvgRasterizationOptions();
pdfOptions.VectorRasterizationOptions = svgRasterizationOptions;
pdfOptions.VectorRasterizationOptions.PageWidth = image.Width;
pdfOptions.VectorRasterizationOptions.PageHeight = image.Height;
image.Save(destFilePath, pdfOptions);
}IMAGINGNET-2148 Converting SVG to raster image (PNG in this case) file is showing blank resultant PNG file
string sourceFilesDirectory = @"F:\SourceDir";
string destDirectory = @"F:\SourceDir\Results";
string[] files = Directory.GetFiles(sourceFilesDirectory);
foreach (string file in files)
{
string fileName = string.Format("{0}_result.png", Path.GetFileNameWithoutExtension(file));
string destPath = Path.Combine(destDirectory, fileName);
using (SvgImage image = (SvgImage)Aspose.Imaging.Image.Load(file))
{
SvgRasterizationOptions rasterizationOptions = new SvgRasterizationOptions();
rasterizationOptions.PageWidth = image.Width;
rasterizationOptions.PageHeight = image.Height;
PngOptions pngOptions = new PngOptions();
pngOptions.VectorRasterizationOptions = rasterizationOptions;
image.Save(destPath, pngOptions);
}
}IMAGINGNET-2140 Improve quality when resized
using (Image image = Image.Load(@"D:\big.jpg"))
{
image.ResizeWidthProportionally(199, ResizeType.HighQualityResample);
image.Save(@"D:\AsposeHQ.jpg");
}IMAGINGNET-1968 TIFF images with JPEG compression should support all possible bits per sample combinations
TiffOptions options = new TiffOptions(TiffExpectedFormat.Default);
options.Compression = TiffCompressions.Jpeg;
options.Photometric = TiffPhotometrics.Rgb;
// If BitsPerSample < 8, lossless JPEG compression takes place.
options.BitsPerSample = new ushort[] { 2, 2, 2 };
// Specify paths to the source and decoded images
string srcImagePath = "Rgb 24bit Source.png";
string decodedTiffImagePath = "TIFF Rgb 2bit Lossless Decoded.png";
using (MemoryStream tiffStream = new MemoryStream())
{
// Convert the source PNG #1 to TIFF with lossless JPEG compression.
using (Image image = Image.Load(srcImagePath))
{
image.Save(tiffStream, options);
}
// Load TIFF and save it to PNG again. This is PNG #2.
tiffStream.Position = 0;
using (Image image = Image.Load(tiffStream))
{
image.Save(decodedTiffImagePath, new PngOptions());
}
}IMAGINGNET-1615 Implementation of rate control algorithm for Aspose.Imaging Jpeg-2000 codec
public void example()
{
string folder = @"D:\Jpeg2000\";
string sourcefileName = folder + "sample.bmp";
const int rateCount = 4;
int[][] compressionRatios = new int[rateCount][]
{
new int[1] {100}, //High compress
new int[1] {30}, //Medium compress
new int[1] {1}, //Low compress (lossless)
new int[3] {40, 30, 20} //Different layers
};
string[] destFileNames = new string[rateCount]
{
"1_HighCompress",
"2_MediumCompress",
"3_LowCompress",
"4_DifferentLayers"
};
long[] maxFileSizes = new long[rateCount]
{
6 * 1024, //High compress ~6 kb
19 * 1024, //Medium compress ~19 kb
81 * 1024, //Low compress ~81 kb
28 * 1024 //Different layers ~28 kb
};
Jpeg2000Codec[] codecs = new Jpeg2000Codec[2]
{
Jpeg2000Codec.J2K,
Jpeg2000Codec.Jp2
};
Jpeg2000Options options = new Jpeg2000Options();
foreach (var codec in codecs)
{
options.Codec = codec;
string ext = codec == Jpeg2000Codec.J2K ? ".j2k" : ".jp2";
for (int i = 0; i < compressionRatios.Length; i++)
{
string destFileName = folder + destFileNames[i] + ext;
using (Image image = Image.Load(sourcefileName))
{
options.CompressionRatios = compressionRatios[i];
image.Save(destFileName, options);
}
FileInfo fileInfo = new FileInfo(destFileName);
long fileSize = fileInfo.Length;
if (fileSize > maxFileSizes[i])
{
throw new TestException(string.Format("Wrong file size for the current compression ratio, index - {0}", i));
}
}
}
}