2 Commits

Include renames

Author	SHA1	Message	Date
Lilith River	6c8f8abc71	test: add CCITT Group 3 (Fax3) test images with libtiff cross-validation ... Three 16x16 bilevel fax3 test images covering the key Group 3 variants: - seq-1c-1b-fax3: basic G3, no fill bits, MSB-first fill order - seq-1c-1b-fax3-fillbits: G3 with T4Options fill bits (byte-aligned EOLs) - seq-1c-1b-fax3-lsb: G3 with FillOrder=2 (LSB-first) All use MinIsWhite photometric with inverted sequential pattern, producing the same decoded CRC32 hash (71f6a21a) as the uncompressed 1-bit images. Cross-validated: libtiff writes the images, both libtiff and image-tiff read them back and agree on the decoded data.	2026-03-12 00:52:03 -06:00
Lilith River	c3977c4513	test: expand test suite to 74 images with libtiff reference decoder ... Add 19 new libtiff-generated test images and a reference decoder (verify_seq_tiff.c) that independently verifies all checksums using libtiff's own read path, giving three-way agreement: libtiff writer → libtiff reader → image-tiff reader New coverage: - Standard sub-byte: 1-bit, 2-bit, 4-bit grayscale (BIZ + WIZ) - Multi-strip: RowsPerStrip=4 (gray 8/16, RGB 8) - Tiled + compressed: LZW and Deflate tiles - Float predictor: f32/f64 + Deflate + predictor=3 - Unassociated alpha: RGBA 8-bit with EXTRASAMPLE_UNASSALPHA - Sub-byte RGB: 5-bit and 7-bit contiguous - Signed RGB: i8 and i16 (3-channel, decoded as Multiband) - Float f64 RGB - Tiled BigTIFF verify_seq_tiff.c: reads each TIFF with libtiff, computes matching checksums (handling packed sub-byte, unpacked extended, float, signed), and verifies 68/68 cases pass. Total: 74 test images (66.8 KB), 317 tests all passing.	2026-03-10 06:02:19 -06:00