<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta name="Generator" content="Microsoft Word 14 (filtered medium)">  <div class="WordSection1"> <p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">Thanks Tim! I really appreciate the help!<br> <br> I have never used the capssetter element before, and that seems to make it work from the launcher.<br> <br> In my application, I tried to set the channel-mask by doing the following below; which never seemed to work. Using your debug trap, I see now that channel_mask is set to 0x21 for some reason?? Even hard-coding it to 0x03 still still results in the wrong mask. Perhaps I'm setting the caps on the pad incorrectly...<br> <br> <br> Output:<br> <br> 0:00:00.705327387 12248 0xccf770 DEBUG GST_EVENT gstpad.c:5098:gst_pad_send_event_unchecked:<alsasink:sink> have event type caps event: 0x7f9be4003c70, time 99:99:99.999999999, seq-num 66, GstEventCaps, caps=(GstCaps)"audio/x-raw\,\ format\=\(string\)S16LE\,\ layout\=\(string\)interleaved\,\ rate\=\(int\)44100\,\ channels\=\(int\)2\,\ channel-mask\=\(bitmask\)0x0000000000000021";<br> 0:00:00.705378555 12248 0xccf770 DEBUG GST_CAPS gstutils.c:2852:gst_pad_query_accept_caps:<alsasink:sink> accept caps of audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000021<br> <br> <br> Code Snippet:<br> <br> interleave = gst_element_factory_make ("interleave", "interleave");<br> g_assert (interleave != NULL);<br> <br> //Create audiochannel position array... Compiled with ignore warnings flag becuase GValueArray is not supported any longer.<br> GValueArray *positions = g_value_array_new (2);<br> GValue val = { 0, };<br> g_value_init (&val, GST_TYPE_AUDIO_CHANNEL_POSITION);<br> g_value_set_enum (&val, GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT);<br> g_value_array_append (positions, &val);<br> g_value_reset (&val);<br> g_value_set_enum (&val, GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT);<br> g_value_array_append (positions, &val);<br> g_value_unset (&val);<br> <br> g_print ("setting channel positions\n");<br> g_object_set(G_OBJECT(interleave), "channel-positions-from-input", FALSE, NULL);<br> g_object_set (interleave, "channel-positions", positions, NULL);<br> <br> guint64 channel_mask = GST_AUDIO_CHANNEL_POSITION_MASK(FRONT_LEFT) | GST_AUDIO_CHANNEL_POSITION_MASK(FRONT_RIGHT);<br> g_print ("channel_mask: 0x%x\n", channel_mask);<br> <br> GstCaps *caps = gst_caps_new_simple(<br> "audio/x-raw",<br> "rate", G_TYPE_INT, 22000,<br> "channels", G_TYPE_INT, 2,<br> "channel-mask", GST_TYPE_BITMASK, channel_mask,<br> NULL);<br> <br> GstPad *srcpad = gst_element_get_static_pad (interleave, "src");<br> g_assert(srcpad);<br> gst_pad_set_caps(srcpad, caps );<br> <br> <o:p></o:p></span></p> <div> <div class="MsoNormal" align="center" style="text-align:center"><span style="color:black"> <hr size="2" width="100%" align="center"> </span></div> <div id="divRpF235841"> <p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> Tim Müller [via GStreamer-devel] [ml-node+<a href="/user/SendEmail.jtp?type=node&node=4667822&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>]<br> <b>Sent:</b> Monday, July 07, 2014 2:57 PM<br> <b>To:</b> David Weldon<br> <b>Subject:</b> Re: Interleave with Alsasink Pipeline Problem</span><span style="color:black"><o:p></o:p></span></p> </div> <div> <p class="MsoNormal"><span style="color:black">On Mon, 2014-07-07 at 11:04 -0700, adweldon wrote: <br> <br> Hi David, <o:p></o:p></span></p> <div> <p class="MsoNormal"><span style="color:black"><br> > I'm trying to create a fairly simple pipeline using test sources, the <br> > interleave element and my alsasink. I'm essentially trying to have <br> > different test sources interleaved into a multichannel stream, and played <br> > out on the alsasink. We are starting with basic two channel stereo right <br> > now, so nothing too complicated. <br> > <br> > The following pipeline using pulsesink, works: <br> > gst-launch-1.0 -v interleave name=i ! pulsesink audiotestsrc name=t1 <br> > volume=0.2 freq=133 ! queue ! i. audiotestsrc name=t2 volume=0.1 freq=200 ! <br> > queue ! i. <br> > <br> > Replacing pulsesink with alsasink results in: <br> > <br> > WARN basesrc gstbasesrc.c:2933:gst_base_src_loop:<t1> error: Internal data <br> > flow error. <br> > WARN basesrc gstbasesrc.c:2933:gst_base_src_loop:<t1> error: streaming task <br> > paused, reason not-negotiated (-4) <br> > INFO GST_ERROR_SYSTEM gstelement.c:1834:gst_element_message_full:<t1> <br> > posting message: Internal data flow error. <br> > GST_ERROR_SYSTEM gstelement.c:1857:gst_element_message_full:<t1> posted <br> > error message: Internal data flow error. <br> > <br> > Also: <br> > WARN alsa conf.c:4694:snd_config_expand: alsalib error: Unknown parameters <br> > {AES0 0x02 AES1 0x82 AES2 0x00 AES3 0x02} <br> > WARN alsa pcm.c:2239:snd_pcm_open_noupdate: alsalib error: Unknown PCM <br> > default:{AES0 0x02 AES1 0x82 AES2 0x00 AES3 0x02} <o:p></o:p></span></p> </div> <p class="MsoNormal" style="margin-bottom:12.0pt"><span style="color:black"><br> I don't think this warning has anything to do with it. <br> <br> > Removing a source, the audio will play... I have created a custom app that <br> > does basically the same thing as the launch pipeline, but it results in the <br> > same errors. I have also tried playing with channel masks and what not in <br> > the app to no avail... <br> > <br> > Any help is appreciated, <br> <br> The debug log should tell you what the problem is: <br> <br> $ GST_DEBUG=*:6 gst-launch-1.0 -v interleave name=i ! alsasink \ <br> audiotestsrc name=t1 volume=0.2 freq=133 ! queue ! i. \ <br> audiotestsrc name=t2 volume=0.1 freq=200 ! queue ! i. \ <br> 2>&1 | grep --max-count=1 -B25 not-negotiated <br> <br> Problem appears to be that interleave output audio with 2 unpositioned <br> channels (channels=2,channel-mask=0), whereas alsa wants left/right for <br> channels=2 (i.e. channels=2,channel-mask=3). pulsesink doesn't seem to <br> care that's why it works. <br> <br> This makes it work (i.e. forcing a left/right layout on the caps): <br> <br> gst-launch-1.0 -v interleave name=i ! capssetter <br> caps='audio/x-raw,channel-mask=(bitmask)0x03' ! alsasink audiotestsrc <br> name=t1 volume=0.2 freq=133 ! queue ! i. audiotestsrc name=t2 <br> volume=0.1 freq=200 ! queue ! i. <br> <br> In code one would do that via interleave's properties I suppose, but <br> with gst-launch this is the only way. <br> <br> Cheers <br> -Tim <br> <br> -- <br> Tim Müller, Centricular Ltd - <a href="http://www.centricular.com" target="_blank" rel="nofollow" link="external"> http://www.centricular.com</a><br> <br> _______________________________________________ <br> gstreamer-devel mailing list <br> <a href="UrlBlockedError.aspx" target="_blank" rel="nofollow" link="external">[hidden email]</a> <br> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank" rel="nofollow" link="external">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a><br> <br> <o:p></o:p></span></p> <div class="MsoNormal" align="center" style="text-align:center"><span style="color:black"> <hr size="1" width="100%" noshade="" style="color:#CCCCCC" align="center"> </span></div> <div> <div> <p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Tahoma","sans-serif";color:#444444">If you reply to this email, your message will be added to the discussion below:<o:p></o:p></span></b></p> </div> <p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Tahoma","sans-serif";color:#444444"><a href="http://gstreamer-devel.966125.n4.nabble.com/Interleave-with-Alsasink-Pipeline-Problem-tp4667819p4667821.html" target="_blank" rel="nofollow" link="external">http://gstreamer-devel.966125.n4.nabble.com/Interleave-with-Alsasink-Pipeline-Problem-tp4667819p4667821.html</a> <o:p></o:p></span></p> </div> <div style="margin-top:4.8pt"> <p class="MsoNormal" style="line-height:18.0pt"><span style="font-size:8.5pt;font-family:"Tahoma","sans-serif";color:#666666">To unsubscribe from Interleave with Alsasink Pipeline Problem, <a href="" target="_blank" rel="nofollow" link="external"> click here</a>.<br> <a href="http://gstreamer-devel.966125.n4.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml" target="_blank" rel="nofollow" link="external"><span style="font-size:7.0pt;font-family:"Times New Roman","serif"">NAML</span></a> <o:p></o:p></span></p> </div> </div> </div> </div> <br/><hr align="left" width="300" /> View this message in context: <a href="http://gstreamer-devel.966125.n4.nabble.com/Interleave-with-Alsasink-Pipeline-Problem-tp4667819p4667822.html">RE: Interleave with Alsasink Pipeline Problem</a><br/> Sent from the <a href="http://gstreamer-devel.966125.n4.nabble.com/">GStreamer-devel mailing list archive</a> at Nabble.com.<br/>