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Xerbo / aptdec

NOAA APT satellite imagery decoder
GNU General Public License v2.0
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Segmentation Fault -aptdec -i t -s 18 2020-06-10-21-30-06-NOAA_18.wav #3

Closed KiwiInNZ closed 4 years ago

KiwiInNZ commented 4 years ago

Code installed onto a Raspberry Pi 3, running latest fully patched Buster, using instructions for installing from https://github.com/Xerbo/aptdec.

Using the .wav file from a recent NOAA 18 pass over New Zealand:

2020-06-10-21-30-06-NOAA_18.zip

One of the examples for using aptdec from the README.md is: ./aptdec -i t -s 18 gqrx_20200527_115730_137914960.wav

Using the example .wav gives a segmentation fault.

./aptdec -i t -s 18 2020-06-10-21-30-06-NOAA_18.wav
Aptdec; (c) 2004-2009 Thierry Leconte F4DWV, Xerbo (xerbo@protonmail.com) 2019-2020
Input file: 2020-06-10-21-30-06-NOAA_18.wav
Input sample rate: 11025
Total rows: 1793
Channel A: 1 (visble)
Channel B: 4 (thermal-infrared)
Temperature... Done
Segmentation fault

The output file created is a zero length file: -rw-r--r-- 1 pi pi 0 Jun 12 12:33 2020-06-10-21-30-06-NOAA_18-t.png

This .wav file processes well using wxtoimg, as seen at - https://kiwiweather.com/2020/06/10/2020-06-10-21-30-06-NOAA_18.html.

Xerbo commented 4 years ago

This is definitely interesting. It seems to be a problem with aptdec on ARM, it works fine on x86. I'll try it on a RasPi soon.

Xerbo commented 4 years ago

Should be fixed now, run git pull && make in the directory. This was a simple case of me forgetting that something was a pointer, and not treating it as a pointer, but for some reason it didn't crash on x86.

KiwiInNZ commented 4 years ago

Tested this on the same Pi after the git pull and make using the same audio and it worked fine.