protected void prepareWriteStack(StkInfoCollection allInfo, int width, int height, ImageDataType dataType, int planeNum, ushort photometricInterpretation)
{
if (allInfo == null)
{
return;
}
stkInfo = allInfo;
TiffWriter.getDataTypeInfo(dataType, out numberOfBits, out isFloatPoint);
isPrepared = false;
planeCounter = 0;
if (width <= 0 || height <= 0 || planeNum <= 0)
{
throw new WriteFileException("Invalid image parameters");
}
this.width = width;
this.height = height;
this.planeNum = planeNum;
System.IO.Stream stream = writer.BaseStream;
prepareWriteFile();
allInfo.forceAdd(new TiffInfo(TiffInfoCollection.PhotometricInterpretation, "", photometricInterpretation));
allInfo.add(new TiffInfo(TiffInfoCollection.XResolution, "", (uint)1, (uint)1));
allInfo.add(new TiffInfo(TiffInfoCollection.YResolution, "", (uint)1, (uint)1));
allInfo.add(new TiffInfo(TiffInfoCollection.ResolutionUnit, "", (ushort)1));
if (isFloatPoint)
{
allInfo.setSampleFormat(TiffInfoCollection.SampleFormatType.FloatPoint);
}
else
{
allInfo.setSampleFormat(TiffInfoCollection.SampleFormatType.UnsignedInteger);
}
if (photometricInterpretation <= 1 || photometricInterpretation == 3)
{
allInfo.forceAdd(new TiffInfo(TiffInfoCollection.BitsPerSample, "Bits per Sample", (ushort)numberOfBits));
byteCountsPerPlane = (uint)(width * height * numberOfBits / 8);
}
else if (photometricInterpretation == 2)
{
allInfo.forceAdd(new TiffInfo(TiffInfoCollection.BitsPerSample, "Bits per Sample", new ushort[] { (ushort)8, (ushort)8, (ushort)8 }));
allInfo.forceAdd(new TiffInfo(TiffInfoCollection.SamplesPerPixel, "Sample per Pixel", (ushort)3));
allInfo.forceAdd(new TiffInfo(TiffInfoCollection.PlanarConfiguration, "", (ushort)1));
byteCountsPerPlane = (uint)(width * height * 3);
}
else
{
throw new Exception("Only support grayscale, palette-color, or RGB images.");
}
stripOffset = (uint)stream.Position;
allInfo.forceAdd(new TiffInfo(TiffInfoCollection.ImageWidth, "width", (uint)width));
allInfo.forceAdd(new TiffInfo(TiffInfoCollection.ImageLength, "height", (uint)height));
allInfo.forceAdd(new TiffInfo(TiffInfoCollection.StripOffsets, "strip Offsets", stripOffset));
allInfo.forceAdd(new TiffInfo(TiffInfoCollection.StripByteCounts, "strip Byte Counts", byteCountsPerPlane));
allInfo.forceAdd(new TiffInfo(TiffInfoCollection.RowsPerStrip, "Rows per strip", (uint)height));
MyTiffCompression.setCompressionTag(allInfo, CompressMethod, CompressLevel);
MyTiffCompression.setHorizontalDifferencing(allInfo, HorizontalDifferencing);
int[] missing;
if (photometricInterpretation <= 1)
{
missing = allInfo.missingInfoGrayscale();
}
else if (photometricInterpretation == 2)
{
missing = allInfo.missingInfoRGB();
}
else
{
missing = allInfo.missingInfoPaletteColor();
}
if (missing.Length > 0)
{
String msg = "Missing tags: ";
for (int i = 0; i < missing.Length; i++)
{
msg += missing[i] + " ";
}
throw new WriteFileException(msg);
}
if (!allInfo.validUIC2tag())
{
throw new WriteFileException("Invalid UIC2 data");
}
isPrepared = true;
}
