[gst-devel] level element in playbin2

[Stefan Kost]

hi,

Am 28.12.2009 14:34, schrieb J. Rios:
> Hello,
>    Im tryign to incorporate the level element into a playbin2. This is
> the significant part of what I have tried
> 
>     GstElement * outputsink;
>     outputsink = gst_element_factory_make( "gconfaudiosink", "audio-sink" );
> ...
>     GstElement * m_Playbin = gst_element_factory_make( "playbin2", "play" );
> ...
>     GstElement * level = gst_element_factory_make( "level", "levelctrl" );
> 
>     GstElement * replay = gst_element_factory_make( "rgvolume",
> "replaygain" );
> 
> 
>     gst_bin_add( GST_BIN( m_Playbin ), level );
>     gst_bin_add( GST_BIN( m_Playbin ), replay );
>     g_object_set( G_OBJECT( m_Playbin ), "audio-sink", outputsink, NULL );
> 
>     g_object_set( level, "message", true, NULL );
> 
>     g_object_set( G_OBJECT( m_Playbin ), "flags", 0x02|0x10, NULL );
> 
>     gst_bus_add_watch( gst_pipeline_get_bus( GST_PIPELINE( m_Playbin ) ),
>             ( GstBusFunc ) gst_bus_async_callback, this );
> 
> 
this cannot work as such. The elements need to be linked in the right order.
What you need to do, is to create an own bin, add level, replay and the
audiosink there, link them and set your bin as the audiosink. You need to add a
ghostpad to the bin and set it to the first (yet unlinked) sink pad of you elements.

Stefan


> The problem I have is that I dont get the Element messages. All the rest
> works fine including the replay-gain volumen but I dont get the level
> messages in the callback function.
> What I want to do is detect when the sound level is below an user
> defined level so I can skip to next track.
> 
> I dunno if this is the correct place to put it but I have been tryign to
> search for this with no success. Please if u know what is wrong or how
> it should work let me know
> 
> Thanks in advance
> J.Rios
> 
> 
> 
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