fix padded pbm binary loading#100
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tannewt merged 1 commit intoadafruit:mainfrom Apr 9, 2025
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Updating https://github.com/adafruit/Adafruit_CircuitPython_TLV320 to 1.0.1 from 1.0.0: > make speaker louder by default > Update README.rst Updating https://github.com/adafruit/Adafruit_CircuitPython_ImageLoad to 1.24.2 from 1.24.1: > Merge pull request adafruit/Adafruit_CircuitPython_ImageLoad#100 from carlossless/binary-pbm-width-fix Updating https://github.com/adafruit/Adafruit_CircuitPython_PIO_UART to 1.0.4 from 1.0.3: > Merge pull request adafruit/Adafruit_CircuitPython_PIO_UART#6 from burtyb/patch-1 Updating https://github.com/adafruit/Adafruit_CircuitPython_USB_Host_Descriptors to 0.2.3 from 0.2.2: > Merge pull request adafruit/Adafruit_CircuitPython_USB_Host_Descriptors#6 from FoamyGuy/update_two_mice_example
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I noticed some of my binary PBM files were failing to load because they appeared to have more pixel bits than the size header indicated — even though they opened and displayed fine in tools like macOS Preview.app.
After digging a bit, I found that for images with widths that aren't a multiple of 8 (i.e., not aligning to a full byte), the remaining bits are padded. Turns out, this is expected behavior per the PBM format spec.
This change updates the loader to ignore those padding bits.