Hi, I'm trying to use gstreamermm, but run into problems.
Anything I'm doing wrong here:
hikaru:~/projects/speech/speech-objdir/src>./speech
** (speech:16125): CRITICAL **: gst_alsa_mixer_element_list_tracks: assertion
`this->mixer != NULL' failed
The relevant code is:
[...]
int
main (int argc, char *argv[])
{
Gtk::Main kit(argc, argv);
Gst::init(argc, argv);
// mixer gives access to the alsamixer.
Glib::RefPtr<Gst::Mixer> mixer = Gst::AlsaMixer::create("mixer");
if(!mixer)
{
std::cerr << "The mixer could not be created." << std::endl;
return -1;
}
// List the tracks of the mixer.
typedef Glib::ListHandle<Glib::RefPtr<Gst::MixerTrack> >
mixer_list_handle_type;
mixer_list_handle_type mixer_list_handle = mixer->list_tracks(); // THIS
LINE CAUSES THE ERROR
[...]
--
Carlo Wood <[email protected]>
PS Note that using typedef Glib::ListHandle<Glib::RefPtr<const Gst::MixerTrack>
> mixer_list_handle_type;
doesn't even compile:
/usr/include/glibmm-2.4/glibmm/listhandle.h:45: error: no match for
‘operator--’ in ‘--pend’
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