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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi Moiz,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>I posted the link in your thread - Need help to enable echo cancel in pulseaudio. &nbsp;The code works well if no Bluetooth is involved.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>Amanda<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p>&nbsp;</o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> ABDUL MOIZ [mailto:abdulmoiz786@gmail.com] <br><b>Sent:</b> Thursday, July 28, 2011 2:08 PM<br><b>To:</b> General PulseAudio Discussion<br><b>Cc:</b> Lin, Mengdong<br><b>Subject:</b> Re: [pulseaudio-discuss] How to avoid module-echo-cancel's &quot;Echo-Cancel Source Stream&quot; being created on a monitor source of an ALSA sink? If module-echo-cancel is loaded before the ALSA source is created.<o:p></o:p></span></p></div></div><p class=MsoNormal><span lang=EN-US><o:p>&nbsp;</o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US>Hi Lin,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Can you please send me the link for the working pulse audio source code(with echo cancel) as I am also working to get echo cancel module work on my OMAP4 panda board.<br><br>Thanks,<br><br>Regards,<br>Abdul Moiz<o:p></o:p></span></p><div><p class=MsoNormal><span lang=EN-US>On Thu, Jul 28, 2011 at 11:20 AM, Lin, Mengdong &lt;<a href="mailto:mengdong.lin@intel.com">mengdong.lin@intel.com</a>&gt; wrote:<o:p></o:p></span></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>I found the module-echo-cancel's &quot;Echo-Cancel Source Stream&quot; can be created on a monitor source of an new created ALSA sink by mistake, if the real ALSA source is not created yet. <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Could anyone tell me how to fix this issue?<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>&nbsp;<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>On my MeeGo platform, the ALSA sink/source don&#8217;t always exist because the ALSA and Bluetooth HSP headset share one hardware data link. So when BT HSP headset is connected, ALSA card will change into a &#8220;hsp&#8221; profile , remove the &#8220;normal&#8221; ALSA sink/source pair and create a &#8220;hsp&#8221; sink/source pair for BT. And after BT HSP headset is disconnected, ALSA card restores its original profile, remove &#8220;hsp&#8221; sink/source and create &#8220;normal&#8221; ALSA sink/source again.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>&nbsp;<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>My problem is that when BT HSP is disconnected during a phone call, I got the above routing error and a pa deadlock described in another loop: <a href="http://lists.freedesktop.org/archives/pulseaudio-discuss/2011-July/010741.html" target="_blank">http://lists.freedesktop.org/archives/pulseaudio-discuss/2011-July/010741.html</a><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>The module-echo-cancel is loaded again when the VOIP stream is routing back to the new created ALSA sink. But because the ALSA source is not created yet (will be later), PA routes the &#8220;Echo-Cancel Source Stream&#8221; to the monitor source of the ALSA sink.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>&nbsp;<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>How to make &#8220;Echo-Cancel Source Stream&#8221; link to the right ALSA source, which will be created a little later?<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>&nbsp;<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Here is the log:<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>I&nbsp; source.c: Created source 8 &quot;alsa_output.platform-pmic_audio.19.intelmadihfheadset.echo-cancel.monitor&quot; with sample spec s16le 2ch 44100Hz and channel map front-left,front-right<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>I&nbsp; source.c:&nbsp;&nbsp;&nbsp;&nbsp; device.description = &quot;Monitor of Echo-Cancel Sink alsa_output.platform-pmic_audio.19.intelmadihfheadset.echo-cancel on Intel MAD intelmadihfheadset&quot;<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>I&nbsp; source.c:&nbsp;&nbsp;&nbsp;&nbsp; device.class = &quot;monitor&quot;<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>I&nbsp; source.c:&nbsp;&nbsp;&nbsp;&nbsp; device.icon_name = &quot;audio-input-microphone&quot;<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>D&nbsp; classify.c: find_group_for_client (|&lt;null&gt;|0|-1|) =&gt; othermedia<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>D&nbsp; module-suspend-on-idle.c: Sink alsa_output.platform-pmic_audio.19.intelmadihfheadset becomes busy.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>D&nbsp; memblockq.c: memblockq requested: maxlength=33554432, tlength=0, base=4, prebuf=0, minreq=1 maxrewind=0<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>D&nbsp; memblockq.c: memblockq sanitized: maxlength=33554432, tlength=33554432, base=4, prebuf=0, minreq=4 maxrewind=0<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>I&nbsp; source-output.c: Created output 2 &quot;Echo-Cancel Source Stream&quot; on alsa_output.platform-pmic_audio.19.intelmadihfheadset.monitor with sample spec s16le 2ch 44100Hz and channel map front-left,front-right<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>I&nbsp; source-output.c:&nbsp;&nbsp;&nbsp;&nbsp; <a href="http://media.name" target="_blank">media.name</a> = &quot;Echo-Cancel Source Stream&quot;<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>I&nbsp; source-output.c:&nbsp;&nbsp;&nbsp;&nbsp; media.role = &quot;filter&quot;<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>E&nbsp; module-echo-cancel.c: new source output &lt;Echo-Cancel Source Stream&gt; on source &lt;alsa_output.platform-pmic_audio.19.intelmadihfheadset.monitor&gt;<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>&nbsp;<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Thanks<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Amanda<o:p></o:p></span></p></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US><br>_______________________________________________<br>pulseaudio-discuss mailing list<br><a href="mailto:pulseaudio-discuss@lists.freedesktop.org">pulseaudio-discuss@lists.freedesktop.org</a><br><a href="http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss" target="_blank">http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss</a><o:p></o:p></span></p></div><p class=MsoNormal><span lang=EN-US><o:p>&nbsp;</o:p></span></p></div></div></body></html>