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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hello,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>We are developing a plugin for VLC, as raised in
another thread, to mix the 6 channels of a 5.1 audio input to a stereo output. The
task is very time consuming, and there are some issues we are having during the
development of the plugin.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Currently, our main problem is we have to adjust some
of the parameters of the algorithm depending on the input rate which the filter
is fed with. We were told that this rate is not predefined, and our tests show
that certainly the fequency of the calls to DoWork can vary a lot depending on
the data source being played.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>The question is: are there any limitations to this
behaviour? are there any constraints that a filter could assume?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>For example, our currents tests show that the audio
of a DVD is given in parts of 1536 samples each. On the contrary, some WAV
files are processed in a part-size sequence of 1024-1024-157 (that is, one out
of three calls is given 157 samples, and the rest is given 1024).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>It would be interesting for us to know about any
predictable behaviour.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Thanks,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Mikel<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:3.0pt'><strong><b><font
size=4 color="#ff9900" face=Arial><span style='font-size:13.5pt;font-family:
Arial;color:#FF9900'>______________________________</span></font></b></strong><o:p></o:p></p>
<p style='margin-bottom:0cm;margin-bottom:.0001pt'><b><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;font-weight:bold'>Mikel Astiz
Zurutuza</span></font></b><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Departamento
de Control y TIC<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Control and
ICT Department</span></font><o:p></o:p></p>
<p style='margin-bottom:0cm;margin-bottom:.0001pt'><strong><b><font size=2
color="#ff8000" face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:#FF8000'>FATRONIK</span></font></b></strong><font size=2><span
style='font-size:10.0pt'><br>
</span></font>Paseo Mikeletegi, 7 - Parque Tecnológico<br>
E-20009 Donostia – San Sebastián<br>
<br>
<br>
<span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-GB
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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