tiff.util.TiffException: Unsupported field type for sample format: 1, bits per sample: 1

[KnIfER]

Could you add support for the tiff image below ? It's black and white, and thus very small.

Version Information:

• TIFF Java Version: 77a8dd626014eed7160a08b0b6cb091d29b12969
• TIFF Java Source: Source
• IDE Name: idea11
• Platform: win10

Steps to Reproduce:

       TIFFImage tiffImage = TiffReader.readTiff(ByteUtils.fileToBytes(new File("abc.tif")));
       List<FileDirectory> directories = tiffImage.getFileDirectories();
       FileDirectory directory = directories.get(0);
       Rasters rasters = directory.readRasters();  //crash

console log:

Exception in thread "main" tiff.util.TiffException: Unsupported field type for sample format: 1, bits per sample: 1
    at tiff.FieldType.getFieldType(FieldType.java:189)
    at tiff.FileDirectory.getFieldTypeForSample(FileDirectory.java:1292)
    at tiff.FileDirectory.readRasters(FileDirectory.java:1119)
    at tiff.FileDirectory.readRasters(FileDirectory.java:981)
    at tiff.FileDirectory.readRasters(FileDirectory.java:933)
    at tiff.FileDirectory.readRasters(FileDirectory.java:912)
    at tiff.testtiff.main(testtiff.java:19)

Test Files:

more_samples (first 8)

[bosborn]

This implementation only works for bits per samples that are divisible by full bytes. Black and white single bits per sample images are not currently supported.

You could convert the image to color tiffs and then use the library in its current form.

Example: Rename the following file to abc.tiff

TIFF Image: abc.tiff

-- File Directory --

ImageWidth (256) SHORT (2 bytes) Count: 1 Values: 2169

ImageLength (257) SHORT (2 bytes) Count: 1 Values: 931

BitsPerSample (258) SHORT (2 bytes) Count: 2 Values: [8, 8]

Compression (259) SHORT (2 bytes) Count: 1 Values: 5

PhotometricInterpretation (262) SHORT (2 bytes) Count: 1 Values: 1

FillOrder (266) SHORT (2 bytes) Count: 1 Values: 1

StripOffsets (273) LONG (4 bytes) Count: 1 Values: [8]

Orientation (274) SHORT (2 bytes) Count: 1 Values: 1

SamplesPerPixel (277) SHORT (2 bytes) Count: 1 Values: 2

RowsPerStrip (278) SHORT (2 bytes) Count: 1 Values: 931

StripByteCounts (279) LONG (4 bytes) Count: 1 Values: [52098]

XResolution (282) RATIONAL (8 bytes) Count: 1 Values: [200, 1]

YResolution (283) RATIONAL (8 bytes) Count: 1 Values: [200, 1]

PlanarConfiguration (284) SHORT (2 bytes) Count: 1 Values: 1

ResolutionUnit (296) SHORT (2 bytes) Count: 1 Values: 2

PageNumber (297) SHORT (2 bytes) Count: 2 Values: [0, 1]

Predictor (317) SHORT (2 bytes) Count: 1 Values: 2

ExtraSamples (338) SHORT (2 bytes) Count: 1 Values: [2]

-- Rasters --

Width: 2169 Height: 931 Number of Pixels: 2019339 Samples Per Pixel: 2 Bits Per Sample: [8, 8]

Pixel x = 0, y = 0: [0, 255] Pixel x = 1084, y = 465: [0, 0] Pixel x = 2168, y = 930: [0, 0]

[KnIfER]

@bosborn I have just found another pure java library , apache common imaging , although like imageIO, It can't be used on android directly. But after removing and replacing lots of code ( use bitmap instead of bufferedimage ), It's working now! It's capble of loading such tiff images (multiple pixels in one byte, T6 compression) .