[gst-devel] using volume element

[Vinod Nanjaiah]

Hi!
I tried changing playback volume in the following way, but it didn't work.

GstElement *volume;
g_object_set (G_OBJECT(volume), "volume", 0.5, NULL);


I get the following error when I execute the program.

(helloworld:7358): GLib-GObject-CRITICAL **: g_object_set: assertion
`G_IS_OBJECT (object)' failed


Please let me know if there is something that I am doing incorrectly.
Regards,
PN


------------------------------

Message: 8
Date: Sat, 13 Oct 2007 17:02:35 +0300
From: Stefan Kost <ensonic at hora-obscura.de>
Subject: Re: [gst-devel] using volume element
To: Vinod Nanjaiah <Vinod_Nanjaiah at mindtree.com>
Cc: gstreamer-devel at lists.sourceforge.net
Message-ID: <4710CFFB.5010009 at hora-obscura.de>
Content-Type: text/plain; charset=ISO-8859-1

hi,

Vinod Nanjaiah wrote:
> Hi All!
> Can someone please point me to an example that shows how to use the volume
> element in a program to control the playback volume?
> 
> The following link only shows how to set volume from command line using
> gst-launch.
>
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plu
> gins/html/gst-plugins-base-plugins-volume.html
> 
> I searched extensively on the net but could not find any information on
this.

Its a gobject with properties. Just
g_object_set(volume_element,"volume",0.5,NULL);
will set volume to 50%

Stefan



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