[maemo-developers] how to detect if the headphones are plugged?

[From: Kemal Hadimli]

Here's how I did it in Python, took some testing.
https://www.guardiani.us/projects/kagu/changeset/670

The SVN Kagu now pauses playback if the headphones are disconnected.

On 10/18/07, Austin Che <list-maemo at austinche.name> wrote:
>
> > g_io_add_watch() if you're using glib, inotify if you're not (man
> > inotify(7)).
> >
> > Regards: David
>
>     Thanks for the suggestion but I can't get this to work. If I use:
>     GIOChannel *io = g_io_channel_new_file("/sys/devices/platform/gpio-switch/headphone/state", "r", NULL);
>     g_io_add_watch(io, G_IO_IN|G_IO_OUT|G_IO_PRI|G_IO_ERR|G_IO_HUP|G_IO_NVAL, test_io_watch, NULL);
>
>     and I print out the GIOCondition in test_io_watch, I get a
>     constant stream (number 10) with nothing extra seen when the headphone
>     is plugged in or out. Using individual conditions leads to either
>     the function never being triggered or always being triggered. What
>     should I be watching for?
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-- 
Kemal