Here is a list of all documented files with brief descriptions:

[detail level 1234]

packs
rigImage
src
Image.h	Load image files into a CPU raster and upload them as GLES textures
Raster.h	CPU RGBA pixel buffer shared by decode, FBO readback, and upload paths
RasterPaint.h	CPU brush dabs into a Raster - the pixel half of an editor Brush tool