png-parser

Nomenclature

PNG
Chunks ID
Chunks
Scanline (Pass)
Filter ID
Image Data
- Image Row
- Encoded Pixel
Real Image
- Pixel

PNG Loading

Open file
- Check magic number
Read chunks
Load PNG metadata:
- Header
- Palette
- ...
Load Image Data
- Image Row
- Image and Pixels

Saving

Image to Image Data
- Update palette if needed
Image Data to bytes
Bytes to IDAT chunk(s)
Update chunks
Save all chunks in bytes to a file