An 256*64 pixel OLED display connected to Raspberry Pi (Zero W) has 4 bit greyscale pixel data packed into a byte (i.e. two pixels per byte), so 8192 bytes in total. E.g. the bytes become Converting these bytes either obtained from a Pillow (PIL) Image or a cairo ImageSurface takes up to 0.9 s when naively iterating the pixel data,
Tag: cairo
Convert SVG to PNG in Python
How do I convert an svg to png, in Python? I am storing the svg in an instance of StringIO. Should I use the pyCairo library? How do I write that code? Answer The answer is “pyrsvg” – a Python binding for librsvg. There is an Ubuntu python-rsvg package providing it. Searching Google for its name is poor because its