Decodebin and multiqueue

[Duchassin Frederic]

Hello,


I have seen that queue size can be tuned by properties 
"max-size-buffers", "max-size-bytes", "max-size-time" of _decodebin_ 
element.

If i set theses properties to 0, decodebin is in automatic mode. How can 
i set these size to 0 in manual mode ?


Frederic



Le 12/02/2019 à 11:58, Duchassin Frederic a écrit :
> Hello,
>
>
> I try to use decodebin in my pipeline. I try to play mpeg2ts video 
> with audio and video and that's why decodebin try to use multiqueue.
>
> But i would like to set properties of this multiqueue (max-size* = 0) .
>
> In order to achieve this i use a callback on "element added" on 
> decodebin :
>
>
> /* CallBack for new element created in Decodebin */
> void gstImpl::cb_element_added_decodebin (GstBin *bin, GstElement 
> *element, gpointer user_data)
> {
>     gchar * name = GST_OBJECT_NAME (element);
>     gstImpl* pStreamObj = static_cast<gstImpl*>(user_data);
>
>     bin = bin; //compiler happy !
>
>     g_print ("DECODBIN element-added: %s\r\n", name);
>
>     if (g_strrstr (name, "multiqueue"))
>     {
>       multiqueue = element;
>
>       g_object_set(G_OBJECT(element), "max-size-buffers", (guint) 0, 
> NULL);
>       g_object_set(G_OBJECT(element), "max-size-bytes", (guint) 0, NULL);
>       g_object_set(G_OBJECT(element), "max-size-time", (guint64) 0, 
> NULL);
>     }
> }
>
>
> If i read later these properties on my multiqueue, i can see that I 
> don't have 0 on all.
>
>
>       guint tmp1, tmp2;
>       guint64 tmp3;
>
>       g_object_get(G_OBJECT(multiqueue), "max-size-buffers", &tmp1, 
> "max-size-bytes", &tmp2, "max-size-time", &tmp3, NULL);
>       tmp1 = 1;
>
>
> --> gives max-size-buffers=5 ; max-size-bytes=2097152; max-size-time=0;
>
>
> Maybe decodebin already set these multiqueue's properties ??
>
>
> BR
>
>
> Frederic
>
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