private static void additionalTestInterlaced(string orig, string origni)
{
// tests also read/write in packed format
PngReader pngr = FileHelper.CreatePngReader(orig);
string copy = TestsHelper.addSuffixToName(orig, "_icopy");
pngr.SetUnpackedMode(false);
PngWriter pngw = FileHelper.CreatePngWriter(copy, pngr.ImgInfo, true);
pngw.CopyChunksFirst(pngr, ChunkCopyBehaviour.COPY_ALL);
pngw.SetUseUnPackedMode(false);
Random random = new Random();
bool useByte = random.NextDouble() > 0.5 && pngr.ImgInfo.BitDepth < 16;
for (int row = 0; row < pngr.ImgInfo.Rows; row++)
{
if (useByte)
{
ImageLine line = pngr.ReadRowByte(row);
pngw.WriteRow(line, row);
}
else
{
ImageLine line = pngr.ReadRowInt(row);
pngw.WriteRow(line, row);
}
}
pngr.End();
pngw.End();
TestsHelper.testEqual(copy, origni);
System.IO.File.Delete(copy);
}
public static void DecreaseRed(String origFilename, String destFilename)
{
if (origFilename.Equals(destFilename))
{
throw new PngjException("input and output file cannot coincide");
}
PngReader pngr = FileHelper.CreatePngReader(origFilename);
PngWriter pngw = FileHelper.CreatePngWriter(destFilename, pngr.ImgInfo, true);
Console.WriteLine(pngr.ToString());
int chunkBehav = ChunkCopyBehaviour.COPY_ALL_SAFE; // copy all 'safe' chunks
// this can copy some metadata from reader
pngw.CopyChunksFirst(pngr, chunkBehav);
int channels = pngr.ImgInfo.Channels;
if (channels < 3)
{
throw new Exception("This method is for RGB/RGBA images");
}
for (int row = 0; row < pngr.ImgInfo.Rows; row++)
{
ImageLine l1 = pngr.ReadRow(row);
for (int j = 0; j < pngr.ImgInfo.Cols; j++)
{
l1.Scanline[j * channels] /= 2;
}
pngw.WriteRow(l1, row);
}
// just in case some new metadata has been read after the image
pngw.CopyChunksLast(pngr, chunkBehav);
pngw.End();
}
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);
}
}
public static void testWrite(string src, string target)
{
// for writing is not necesary to register
DummyClass c = new DummyClass();
c.name = "Hernán";
c.age = 45;
PngReader pngr = FileHelper.CreatePngReader(src);
PngWriter pngw = FileHelper.CreatePngWriter(target, pngr.ImgInfo, true);
pngw.CopyChunksFirst(pngr, ChunkCopyBehaviour.COPY_ALL_SAFE);
PngChunkSERI mychunk = new PngChunkSERI(pngw.ImgInfo);
mychunk.SetObj(c);
mychunk.Priority = true; // if we want it to be written as soon as possible
pngw.GetChunksList().Queue(mychunk);
for (int row = 0; row < pngr.ImgInfo.Rows; row++)
{
ImageLine l1 = pngr.ReadRow(row);
pngw.WriteRow(l1, row);
}
pngw.CopyChunksLast(pngr, ChunkCopyBehaviour.COPY_ALL);
pngr.End();
pngw.End();
Console.Out.WriteLine("Done. Writen : " + target);
}
public static void doit(String orig)
{
string copy = TestsHelper.addSuffixToName(orig, "_tc");
PngReader pngr = FileHelper.CreatePngReader(orig);
if (!pngr.ImgInfo.Indexed)
{
throw new Exception("Not indexed image");
}
PngChunkPLTE plte = pngr.GetMetadata().GetPLTE();
PngChunkTRNS trns = pngr.GetMetadata().GetTRNS(); // transparency metadata, can be null
bool alpha = trns != null;
ImageInfo im2 = new ImageInfo(pngr.ImgInfo.Cols, pngr.ImgInfo.Rows, 8, alpha);
PngWriter pngw = FileHelper.CreatePngWriter(copy, im2, true);
pngw.CopyChunksFirst(pngr, ChunkCopyBehaviour.COPY_ALL_SAFE);
int[] buf = null;
for (int row = 0; row < pngr.ImgInfo.Rows; row++)
{
ImageLine line = pngr.ReadRowInt(row);
buf = ImageLineHelper.Palette2rgb(line, plte, trns, buf);
pngw.WriteRowInt(buf, row);
}
pngw.CopyChunksLast(pngr, ChunkCopyBehaviour.COPY_ALL_SAFE);
pngr.End();
pngw.End();
Console.WriteLine("True color: " + copy);
}
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 showChunks(String file)
{
PngReader pngr = FileHelper.CreatePngReader(file);
pngr.MaxTotalBytesRead = 1024 * 1024 * 1024L * 3; // 3Gb!
pngr.ReadSkippingAllRows();
Console.Out.WriteLine(pngr.ToString());
Console.Out.WriteLine(pngr.GetChunksList().ToStringFull());
}
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);
}
}
static void Main(string[] args)
{
PngReader png = FileHelper.CreatePngReader("d:/WImageTest/test1.png");
Console.Out.WriteLine(png);
long t0 = Environment.TickCount;
//testX();
myTestSuite();
//testTextChunks();
long t1 = Environment.TickCount;
Console.Out.WriteLine("Done. (" + (t1 - t0) + " msecs) " + "Net version: " + Environment.Version + " Press ENTER to close");
Console.In.ReadLine();
}
public static void testRead(String file)
{
// register with factory chunk
PngChunk.FactoryRegister(PngChunkSERI.ID, typeof(PngChunkSERI));
// read all file
PngReader pngr = FileHelper.CreatePngReader(file);
pngr.ReadSkippingAllRows();
pngr.End();
// we assume there can be at most one chunk of this type...
PngChunk chunk = pngr.GetChunksList().GetById1(PngChunkSERI.ID); // This would work even if not registered, but then PngChunk would be of type PngChunkUNKNOWN
Console.Out.WriteLine(chunk);
// the following would fail if we had not register the chunk
PngChunkSERI chunkprop = (PngChunkSERI)chunk;
string name = chunkprop.GetObj().name;
int age = chunkprop.GetObj().age;
Console.Out.WriteLine("Done. Name: " + name + " age=" + age);
}
private static void additionalTestPalette(string orig, string truecolor)
{
// covnert to true color 8 bits and check equality
PngReader pngr = FileHelper.CreatePngReader(orig);
PngChunkPLTE plte = pngr.GetMetadata().GetPLTE();
PngChunkTRNS trns = pngr.GetMetadata().GetTRNS();
string copy = TestsHelper.addSuffixToName(orig, "_tccopy");
bool alpha = trns != null;
ImageInfo im2 = new ImageInfo(pngr.ImgInfo.Cols, pngr.ImgInfo.Rows, 8, alpha);
PngWriter pngw = FileHelper.CreatePngWriter(copy, im2, true);
pngw.CopyChunksFirst(pngr, ChunkCopyBehaviour.COPY_ALL_SAFE);
int[] buf = null;
for (int row = 0; row < pngr.ImgInfo.Rows; row++)
{
ImageLine line = pngr.ReadRowInt(row);
buf = ImageLineHelper.Palette2rgb(line, plte, trns, buf);
pngw.WriteRowInt(buf, row);
}
pngr.End();
pngw.End();
TestsHelper.testEqual(copy, truecolor);
System.IO.File.Delete(copy);
}
static void testX() // placeholder method for misc tests
{
PngReader png = FileHelper.CreatePngReader("C:/temp/map.png");
Console.Out.WriteLine(png);
}
public static PngReader getReaderTmp(String suffix)
{
PngReader p = FileHelper.CreatePngReader(getTmpFile(suffix));
return(p);
}