GIFIO and Palettes | adafruit | Page 1

ionic dew Feb 23, 2023, 10:08 PM

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While a writer can assume a colorspace, I don't know that a reader can unless you don't care if the colors display correctly. But most people do care.

tardy shale Feb 23, 2023, 11:23 PM

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@paper musk can you extract the Palette from the gif -- maybe that should be used instead of the standard ColorConverter?? I was testing with this gif:

paper musk Feb 23, 2023, 11:34 PM

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Right now the GIF is converted to RGB565 (little endian) when stored in the Bitmap object. Mostly to send to LCDs with the least time/trouble.

Having an option to extra a bitmap+palette is a feature I'd like to add in but haven't yet.

You could use ColorConverter to convert the RGB565 to whatever is needed for the display.

ionic dew Feb 24, 2023, 12:41 AM

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@tardy shale What was the difference in the image using RGB565 vs RGB565_SWAPPED?

tardy shale Feb 24, 2023, 1:45 AM

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RGB565 colors were completely wrong. RGB565_SWAPPED looked right, though I am color deficient, so still could be somewhat wrong.

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so I am wondering if the PyPortal display needs swapped, or maybe the conversion is wrong? But that would have been obvious to @paper musk

paper musk Feb 24, 2023, 3:12 AM

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Different displays may want different Big/Little Endian so changing RGB565 or RGB565_SWAPPED may make a difference. I don't own a PyPortal so I can't easily test that.

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I try take a look at it later this weekend more if you cannot get it going. Sorry just haven't been home much today to check

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@ionic dew feel free to ping me on here too if you find something or hit a point you just don't know

#GIFIO and Palettes