public void TestEmptyTargetImage_Decompress()
{
Assert.Throws <DirectoryNotFoundException>(() =>
{
m_testerDecompress.Run(new string[] { }, Tester.MapOpenPath("3D.JPG"), Tester.Testcase);
});
}
public void TestMarkerList()
{
jpeg_decompress_struct cinfo = new jpeg_decompress_struct();
using (FileStream input = new FileStream(Tester.MapOpenPath("PARROTS.JPG"), FileMode.Open))
{
/* Specify data source for decompression */
cinfo.jpeg_stdio_src(input);
const int markerDataLengthLimit = 1000;
cinfo.jpeg_save_markers((int)JPEG_MARKER.COM, markerDataLengthLimit);
cinfo.jpeg_save_markers((int)JPEG_MARKER.APP0, markerDataLengthLimit);
/* Read file header, set default decompression parameters */
cinfo.jpeg_read_header(true);
Assert.AreEqual(cinfo.Marker_list.Count, 3);
int[] expectedMarkerType = { (int)JPEG_MARKER.APP0, (int)JPEG_MARKER.APP0, (int)JPEG_MARKER.COM };
int[] expectedMarkerOriginalLength = { 14, 3072, 10 };
for (int i = 0; i < cinfo.Marker_list.Count; ++i)
{
jpeg_marker_struct marker = cinfo.Marker_list[i];
Assert.IsNotNull(marker);
Assert.AreEqual(marker.Marker, expectedMarkerType[i]);
Assert.AreEqual(marker.OriginalLength, expectedMarkerOriginalLength[i]);
Assert.LessOrEqual(marker.Data.Length, markerDataLengthLimit);
}
}
}
public void TestGrayscaleJpegToBitmap()
{
using (JpegImage jpegImage = new JpegImage(Tester.MapOpenPath("turkey.jpg")))
{
testBitmapOutput(jpegImage, "turkey.png");
}
}
public void TestJpegImageFromBitmap(string fileName)
{
string jpegFileName = fileName.Remove(fileName.Length - 4);
jpegFileName += ".jpg";
using (Bitmap bmp = new Bitmap(Tester.MapOpenPath(fileName)))
testJpegFromBitmap(bmp, jpegFileName);
testJpegFromFile(Tester.MapOpenPath(fileName), jpegFileName);
}
public void TestDecompressionFromCMYKJpeg()
{
using (JpegImage jpeg = new JpegImage(Tester.MapOpenPath("ammerland.jpg")))
{
Assert.AreEqual(jpeg.BitsPerComponent, 8);
Assert.AreEqual(jpeg.ComponentsPerSample, 4);
Assert.AreEqual(jpeg.Colorspace, Colorspace.CMYK);
Assert.AreEqual(jpeg.Width, 315);
Assert.AreEqual(jpeg.Height, 349);
testBitmapOutput(jpeg, "ammerland.bmp");
}
}
public void TestCompressionResultsSameAsForCJpeg()
{
using (JpegImage jpeg = new JpegImage(Tester.MapOpenPath("test24.bmp")))
{
testJpegOutput(jpeg, "test24.jpg");
CompressionParameters parameters = new CompressionParameters();
parameters.Quality = 25;
testJpegOutput(jpeg, parameters, "test24_25.jpg");
parameters = new CompressionParameters();
parameters.SimpleProgressive = true;
testJpegOutput(jpeg, parameters, "test24_prog.jpg");
}
}
public void TestDecompressionResultsSameAsForDJpeg(string fileName)
{
string outputFileName = fileName.Replace(".JPG", ".bmp");
testBitmapFromFile(Tester.MapOpenPath(fileName), outputFileName);
}
