[gst-devel] Help for dshowaudiosrc

[Julien Isorce]

2009/3/18 <cammille at polytech.unice.fr>

> I would prefer to not recompile dshowaudiosrc if it's possible.
> My microphone is not muted. So I don't understand why it didn't work. With
> the windows magnetophone I can register my voice. Very strange...


Maybe how are not using the device you are excepting to use.  In panel
configuration, sound, you can see if you have several audio devices. If yes,
you have to set device name on dshowaudiosrc. (check the volume too)


> I don't find any information about property probe.. so I don't know how to
> use it.


gst doc.


>
> > Hi,
> >
> > 2 solutions.
> >
> > ****The first one (user) is to click on volume icone from task bar then
> > Options->properties then select "Enregistrement" ("Recording") then
> select
> > microphone then OK then unmute microphone.
> >
> > ****The second solution (using code), is to recompile dshowaudiosrc using
> > this patch:
> > http://bugzilla.gnome.org/show_bug.cgi?id=517203  (just see the last
> post)
> >
> > Then the following code could be used to list, select and configure the
> > input channel of your choise (S/PDIF, lineIn, Mic etc..)
> >
> > ----------------------------- list audio input ------------------------
> > vector<string> listAudioInputs(const string audioDeviceName)
> > GstElement* audiodevicesrc = create_element("dshowaudiosrc",
> > "audiodevicesrc");
> >  g_object_set(G_OBJECT(audiodevicesrc), "device-name",
> > audioDeviceName.c_str(), NULL);
> >
> >  GstPad* pad = gst_element_get_static_pad  (audiodevicesrc, "src");
> >  gst_pad_get_caps (pad);
> >  if (pad)
> >      gst_object_unref(pad);
> >
> >  vector<string> l_inputs;
> >  GstMixer *mixer = GST_MIXER (audiodevicesrc);
> > const GList* list = gst_mixer_list_tracks (mixer);
> >
> >  for (const GList* item = list; item != NULL; item = item->next)
> > {
> >     GstMixerTrack *track = (GstMixerTrack*)item->data;
> >      l_inputs.push_back(string(track->label));
> > }
> >
> >  if (audiodevicesrc)
> > {
> >      gst_element_set_state (audiodevicesrc, GST_STATE_NULL);
> >      gst_object_unref(GST_OBJECT (audiodevicesrc));
> > }
> >
> > return l_inputs;
> > }
> >
> ------------------------------------------------------------------------------------------------------
> >
> > ---------------------------- select record input and set volume
> > -------------------------------------
> > void setAudioInput(const string audioInput, int volumePercentOfMax)
> > {
> >   GstMixer *mixer = GST_MIXER (audiodevicesrc);
> >   GstMixerTrack *track = NULL;
> >   const GList* list = gst_mixer_list_tracks (mixer);
> >   for (const GList* item = list; item != NULL; item = item->next)
> >    {
> >       GstMixerTrack *track_next = (GstMixerTrack*)item->data;
> >       if (audioInput == std::string(track_next->label))
> >            track = track_next;
> >         else
> >            //mute other audio inputs
> >            gst_mixer_set_mute(mixer, track_next, TRUE);
> >    }
> > if (track)
> > {
> >     vector<gint> volumes(m_audioNbChannels, (gint)(volumePercentOfMax *
> > track->max_volume / 100.0));
> >      gst_mixer_set_record (mixer, track, TRUE);
> >      gst_mixer_set_volume (mixer, track, &volumes[0]);
> >
> >   }
> > }
> >
> >
> ------------------------------------------------------------------------------------------------------
> >
> > They are some bad things in this code but the idea is there.
> >
> > You can also use property probe on dshowaudiosrc to list all the audio
> > device names installed on your system.
> >
> > J.
> >
> >
> > 2009/3/18 <cammille at polytech.unice.fr>
> >
> >> Hello,
> >>
> >> I'm trying to use dshowaudiosrc on Windows but I have some problems.
> >>
> >> For example, I try :
> >>
> >> gst-launch-0.10.exe dshowaudiosrc ! audioconvert ! vorbisenc ! oggmux !
> >> filesink location=foo.ogg
> >>
> >> And hen I talk in my micro the file foo.ogg is empty.
> >> I already verified if my micro functions correctly. It does.
> >>
> >> If I try :
> >> gst-launch-0.10.exe audiotestsrc ! audioconvert ! vorbisenc ! oggmux !
> >> filesink location=foo.ogg it works !
> >>
> >>
> >> Where is the problem ?
> >>
> >>
> >>
> >>
> >>
> >>
> ------------------------------------------------------------------------------
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> >>
> >
> ------------------------------------------------------------------------------
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> > easily build your RIAs with Flex Builder, the Eclipse(TM)based
> development
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> > Download the free 60 day trial.
> >
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>
>
>
>
> ------------------------------------------------------------------------------
> Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are
> powering Web 2.0 with engaging, cross-platform capabilities. Quickly and
> easily build your RIAs with Flex Builder, the Eclipse(TM)based development
> software that enables intelligent coding and step-through debugging.
> Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com
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