pnm decoding and encoding
| ofs | hex dump | ascii |
|---|---|---|
| 0000 | 89 50 4e 47 0d 0a 1a 0a 00 00 00 0d 49 48 44 52 00 00 00 14 00 00 00 0f 01 00 00 00 00 cc e3 d2 | .PNG........IHDR................ |
| 0020 | f8 00 00 00 01 73 52 47 42 00 ae ce 1c e9 00 00 00 25 49 44 41 54 78 da 63 80 01 39 20 16 80 62 | .....sRGB........%IDATx.c..9...b |
| 0040 | ab df 07 18 04 56 39 30 08 c1 f0 ea 03 40 51 07 08 66 3e 00 d3 02 00 db e4 07 e6 67 74 06 b5 00 | [email protected]>........gt... |
| 0060 | 00 00 00 49 45 4e 44 ae 42 60 82 | ...IEND.B`. |