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<DIV>Hi Ross,</DIV>
<DIV> </DIV>
<DIV>I found the problem that uLawFromPCMAudioSource afterGettingFrame is
not getting called when I use DeviceSource based design and triggering
concept.</DIV>
<DIV>i.e. </DIV>
<DIV>If I am calling FramedSource::afterGetting(this) in doGetNextFrame itself ,
it is calling afterGettingFrame function in
uLawFromPCMAudioSource followed by calling
afterGettingFrame function in MultiFramedRTPSink.</DIV>
<DIV> </DIV>
<DIV>If I am calling FramedSource::afterGetting(this) in deliverFrame(which will
called by trigger event), then it is calling only afterGettingFrame
function in MultiFramedRTPSink and not uLawFromPCMAudioSource
afterGettingFrame function.</DIV>
<DIV>That's why I am getting FramedSource ::getNextFrame():attempting to read
more than once at the same time. </DIV>
<DIV> </DIV>
<DIV>Where I am going wrong?</DIV>
<DIV>Can you please help on that?</DIV>
<DIV> </DIV>
<DIV>Thanks in advance</DIV>
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<DIV style="font-color: black"><B>From:</B> <A title=krishnaks@iwavesystems.com
href="mailto:krishnaks@iwavesystems.com">Krishna</A> </DIV>
<DIV><B>Sent:</B> Friday, October 11, 2013 12:40 PM</DIV>
<DIV><B>To:</B> <A title=live-devel@ns.live555.com
href="mailto:live-devel@ns.live555.com">live-devel@ns.live555.com</A> </DIV>
<DIV><B>Subject:</B> [Live-devel] FrameSource:Getnextframe error while streaming
PCMframes</DIV></DIV></DIV>
<DIV> </DIV></DIV>
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<DIV>Hi Ross,</DIV>
<DIV> </DIV>
<DIV><FONT face="Times New Roman">I have problems streaming live PCM audio.
Audio comes either directly from microphone (16-bit LE) </FONT></DIV>
<DIV><FONT face="Times New Roman">Sampling frequency is 8k, mono(1 channel).
</FONT></DIV>
<DIV><FONT face="Times New Roman">I receive a buffer in the thread and use
event trigger to signal my live555 thread.</FONT></DIV>
<DIV><FONT face="Times New Roman"></FONT> </DIV>
<DIV><FONT face="Times New Roman">I've created class based on DeviceSource that
inherit from AudioInputDevice and delivers the Frame on trigger.</FONT></DIV>
<DIV>I am using uLawFromPCMAudioSource to convert to 8-bit u-law audio</DIV>
<DIV> </DIV>
<DIV>I am getting following error if I am giving audio format as WA_PCM:</DIV>
<DIV>FramedSource ::getNextFrame():attempting to read more than once at the same
time. </DIV>
<DIV>One thing I observed here is FramedSource::getNextFrame is getting called
twice at a time( uLawFromPCMAudioSource is calling it again)</DIV>
<DIV> </DIV>
<DIV>If I change audio format to WA_PCMU, I am able to stream without any error
( As FramedSource::getNextFrame is getting called once at a time), and VLC
also able to play with some noise.</DIV>
<DIV> </DIV>
<DIV>Where I am going wrong ? </DIV>
<DIV> </DIV>
<DIV>Thanks in advance</DIV>
<DIV> </DIV>
<DIV>Regards,<BR>Krishna</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><FONT face="Times New Roman"></FONT> </DIV>
<H1> </H1>
<DIV><FONT face="Times New Roman"><BR></FONT> </DIV></DIV></DIV>
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