public static void testEqual(String image1, String image2)
{
PngReader png1 = FileHelper.CreatePngReader(image1);
PngHelperInternal.InitCrcForTests(png1);
PngReader png2 = FileHelper.CreatePngReader(image2);
PngHelperInternal.InitCrcForTests(png2);
if (png1.IsInterlaced() != png2.IsInterlaced())
{
fatalError("Cannot compare, one is interlaced, the other not:" + png1 + " " + png2,
png1, png2);
}
if (!png1.ImgInfo.Equals(png2.ImgInfo))
{
fatalError("Image are of different type", png1, png2);
}
png1.ReadRow(png1.ImgInfo.Rows - 1);
png2.ReadRow(png2.ImgInfo.Rows - 1);
png1.End();
png2.End();
long crc1 = PngHelperInternal.GetCrctestVal(png1);
long crc2 = PngHelperInternal.GetCrctestVal(png2);
if (crc1 != crc2)
{
fatalError("different crcs " + image1 + "=" + crc1 + " " + image2 + "=" + crc2,
png1, png2);
}
}
static void testmirror(string orig, string origni, string truecolor)
{
string mirror = TestsHelper.addSuffixToName(orig, "_mirror");
string recov = TestsHelper.addSuffixToName(orig, "_recov");
long crc0 = 0;
bool interlaced;
bool palete;
{
PngReader pngr = FileHelper.CreatePngReader(orig);
palete = pngr.ImgInfo.Indexed;
PngHelperInternal.InitCrcForTests(pngr);
pngr.SetUnpackedMode(true);
interlaced = pngr.IsInterlaced();
PngWriter pngw = FileHelper.CreatePngWriter(mirror, pngr.ImgInfo, true);
pngw.SetFilterType(FilterType.FILTER_CYCLIC); // just to test all filters
pngw.CopyChunksFirst(pngr, ChunkCopyBehaviour.COPY_ALL);
pngw.SetUseUnPackedMode(true);
for (int row = 0; row < pngr.ImgInfo.Rows; row++)
{
ImageLine line = pngr.ReadRowInt(row);
mirrorLine(line);
pngw.WriteRow(line, row);
}
pngr.End();
crc0 = PngHelperInternal.GetCrctestVal(pngr);
pngw.CopyChunksFirst(pngr, ChunkCopyBehaviour.COPY_ALL);
pngw.End();
}
// mirror again, now with BYTE (if depth<16) and loading all rows
{
PngReader pngr2 = FileHelper.CreatePngReader(mirror);
pngr2.SetUnpackedMode(true);
PngWriter pngw = FileHelper.CreatePngWriter(recov, pngr2.ImgInfo, true);
pngw.SetFilterType(FilterType.FILTER_AGGRESSIVE);
pngw.CopyChunksFirst(pngr2, ChunkCopyBehaviour.COPY_ALL);
pngw.SetUseUnPackedMode(true);
ImageLines lines = pngr2.ImgInfo.BitDepth < 16 ? pngr2.ReadRowsByte() : pngr2
.ReadRowsInt();
for (int row = 0; row < pngr2.ImgInfo.Rows; row++)
{
ImageLine line = lines.GetImageLineAtMatrixRow(row);
mirrorLine(line);
pngw.WriteRow(line, row);
}
pngr2.End();
pngw.End();
}
// now check
if (orig[11] != 'i')
{
TestsHelper.testCrcEquals(recov, crc0);
}
//if (interlaced)
// additionalTestInterlaced(orig, origni);
//if (palete && System.IO.File.Exists(truecolor))
// additionalTestPalette(orig, truecolor);
}
public static void testCrcEquals(string image1, long crc)
{
PngReader png1 = FileHelper.CreatePngReader(image1);
PngHelperInternal.InitCrcForTests(png1);
png1.ReadRow(png1.ImgInfo.Rows - 1);
png1.End();
long crc1 = PngHelperInternal.GetCrctestVal(png1);
if (crc1 != crc)
{
fatalError("different crcs", png1);
}
}