[Spice-devel] volume can't be set

[Marc-André Lureau]

----- Original Message -----
> Hi all!
> 
> I connected Spice server by windows spice client which is complied by
> mingw32, and set the volume.
> 
> But the volume didn't change.
> 
> the code form:
> https://gitorious.org/spice-gtk/spice-gtk-elmarco/source/f270119352604755a13fcc87783127c3d96c4f61:gtk/spice-gstaudio.c
> 
> create pipe code:
> if (pipeline == NULL)
> pipeline = g_strdup_printf("appsrc is-live=1 do-timestamp=0 caps=\"%s\"
> name=\"appsrc\" ! queue ! "
> "audioconvert ! audioresample ! autoaudiosink name=\"audiosink\"",
> audio_caps);
> SPICE_DEBUG("audio pipeline: %s", pipeline);
> p->playback.pipe = gst_parse_launch(pipeline, &error);
> if (p->playback.pipe == NULL) {
> g_warning("Failed to create pipeline: %s", error->message);
> goto lerr;
> }
> p->playback.src = gst_bin_get_by_name(GST_BIN(p->playback.pipe), "appsrc");
> p->playback.sink = gst_bin_get_by_name(GST_BIN(p->playback.pipe),
> "audiosink");
> 
> set volume code:
> GstElement *e;
> if (GST_IS_BIN(p->playback.sink))
> e = gst_bin_get_by_interface(GST_BIN(p->playback.sink),
> GST_TYPE_STREAM_VOLUME);
> else
> e = g_object_ref(p->playback.sink);
> 
> I have debuged the code. when the volume was set, the e returned NULL.
> 
> Is it a bug?

If you don't have a sink, it means you are missing gstreamer plugins.

On Windows, you need the directsoundsink element (from gst-plugins-good). It implements the "volume" property.

cheers