farbfeld is a simple uncompressed raster graphics format (for use with pipes). It supports 16 bits/sample RGBA color.
Files begin with ASCII "
Start with header, and then data. Header consist of ASCII text "
farbfeld", and then 32-bit width, and then 32-bit height. Data is starting top left corner and going right, each pixel is: 16-bits red, 16-bits green, 16-bits blue, 16-bits alpha. All numbers are unsigned big-endian.