feat(psd): Add support for 16- and 32-bit Photoshop file reads (Acade…

…mySoftwareFoundation#4208)

As mentioned in AcademySoftwareFoundation#4205, AcademySoftwareFoundation#3900 and
AcademySoftwareFoundation#3910 (reply in thread)
OpenImageIO previously did not support reading of 16- and 32-bit files
beyond their merged image data section. I have now implemented this by:

1. Adding support for reading layer info from the "Lr16" and "Lr32"
Tagged Blocks as well as adding additional checks to the regular layer
info section
2. Implemented the Zip and ZipPrediction compression codec which is
required to read these files as that is photoshops preferred compression
codec for those bitdepths

Due to the way the Zip data is stored (per channel but not per scanline)
the current implementation reads the whole channel into a buffer which
is then memcpy'd from by calls to `read_native_scanline()`. The buffer
gets cleared on deletion of the `PSDInput` object

---------

Signed-off-by: EmilDohne <86836589+EmilDohne@users.noreply.github.com>
Signed-off-by: Larry Gritz <lg@larrygritz.com>
Co-authored-by: Larry Gritz <lg@larrygritz.com>

testsuite/psd-colormodes/ref/out.txt

@@ -24,15 +24,15 @@ Comparing "pattern2-16-rgb.psd.tif" and "ref/pattern2.tif"
 PASS
 Comparing "pattern2-8-cmyk.psd.tif" and "ref/pattern2-cmyk.tif"
 PASS
-Comparing "pattern2-16-cmyk.psd.tif" and "ref/pattern2-cmyk.tif"
+Comparing "pattern2-16-cmyk.psd.tif" and "ref/pattern2-16-cmyk.psd.tif"
 PASS
 Comparing "pattern2-8-multichannel.psd.tif" and "ref/pattern2.tif"
 PASS
 Comparing "pattern2-16-multichannel.psd.tif" and "ref/pattern2.tif"
 PASS
 Comparing "pattern2-8-grayscale.psd.tif" and "ref/pattern2-gray.tif"
 PASS
-Comparing "pattern2-16-grayscale.psd.tif" and "ref/pattern2-gray.tif"
+Comparing "pattern2-16-grayscale.psd.tif" and "ref/pattern2-16-grayscale.psd.tif"
 PASS
 Comparing "pattern2-8-indexed.psd.tif" and "ref/pattern2-alpha.tif"
 PASS

testsuite/psd/run.py

@@ -22,3 +22,8 @@
 command += info_command ("src/crash-psd-exif-1632.psd", failureok = 1)
 # Corrupted thumbnail clobbered memory
 command += info_command ("src/crash-thumb-1626.psd", failureok = 1)
+
+# Test more modern (Photoshop 2023 files) with 16- and 32-bit files containing multiple sublayers
+command += info_command ("src/Layers_8bit_RGB.psd")
+command += info_command ("src/Layers_16bit_RGB.psd")
+command += info_command ("src/Layers_32bit_RGB.psd")