Pascal Massimino 1e7ad88b85 PNM header decoder: add some basic numerical validation
see spec: http://netpbm.sourceforge.net/doc/ppm.html

Change-Id: I55e01f8cec79f9124e72d5f3d05be4ad0deae315
2017-02-01 15:03:11 +01:00
..
2016-12-20 20:14:55 -08:00