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List: gstreamer-devel
Subject: Re: [gst-devel] dynamic pipeline questions
From: John Stritch <johnstritch () earthlink ! net>
Date: 2006-11-27 0:43:46
Message-ID: 1164588226.4453.9.camel () goatherder ! stritch-farms
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On Sun, 2006-11-26 at 02:22 +0100, René Stadler wrote:
> The element is indeed not documented. Parsing the message like this
> should work (completely untested):
>
> {
> const GstStructure *s = gst_message_get_structure (message);
> const gchar *name = gst_structure_get_name (s);
>
> if (g_str_equal (name, "cutter")) {
> gboolean above;
> GstClockTime timestamp;
>
> if (gst_structure_get_boolean (s, "above", &above)
> && gst_structure_get_clock_time (s, "timestamp", ×tamp)) {
>
> do_something (above, timestamp);
> }
> }
> }
>
> Where "message" is a GstMessage of type GST_MESSAGE_ELEMENT coming from
> the bus. Your application should already interact with the pipeline's
> bus to implement error handling. Refer to the application development
> manual and the core reference for more information.
>
> Regards,
> René Stadler
That was the ticket! I now have a single file that grows when there is
sound above the threshold I specify (0.01 (-40dB) seems good right now).
On to other aspects of the application.
Thanks for the help,
John
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On Sun, 2006-11-26 at 02:22 +0100, René Stadler wrote:
<BLOCKQUOTE TYPE=CITE>
<PRE>
<FONT COLOR="#000000">The element is indeed not documented. Parsing the message like \
this</FONT> <FONT COLOR="#000000">should work (completely untested):</FONT>
<FONT COLOR="#000000">{</FONT>
<FONT COLOR="#000000"> const GstStructure *s = gst_message_get_structure \
(message);</FONT> <FONT COLOR="#000000"> const gchar *name = gst_structure_get_name \
(s);</FONT>
<FONT COLOR="#000000"> if (g_str_equal (name, "cutter")) {</FONT>
<FONT COLOR="#000000"> gboolean above;</FONT>
<FONT COLOR="#000000"> GstClockTime timestamp;</FONT>
<FONT COLOR="#000000"> if (gst_structure_get_boolean (s, "above", \
&above)</FONT> <FONT COLOR="#000000"> && \
gst_structure_get_clock_time (s, "timestamp", &timestamp)) {</FONT>
<FONT COLOR="#000000"> do_something (above, timestamp);</FONT>
<FONT COLOR="#000000"> }</FONT>
<FONT COLOR="#000000"> }</FONT>
<FONT COLOR="#000000">}</FONT>
<FONT COLOR="#000000">Where "message" is a GstMessage of type \
GST_MESSAGE_ELEMENT coming from</FONT> <FONT COLOR="#000000">the bus. Your \
application should already interact with the pipeline's</FONT> <FONT \
COLOR="#000000">bus to implement error handling. Refer to the application \
development</FONT> <FONT COLOR="#000000">manual and the core reference for more \
information.</FONT>
<FONT COLOR="#000000">Regards,</FONT>
<FONT COLOR="#000000"> René Stadler</FONT>
</PRE>
</BLOCKQUOTE>
That was the ticket! I now have a single file that grows when there is sound \
above the threshold I specify (0.01 (-40dB) seems good right now).<BR> <BR>
On to other aspects of the application.<BR>
<BR>
Thanks for the help,<BR>
John
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