<br><br><div><span class="gmail_quote">On 10/2/05, <b class="gmail_sendername">Andreas Klöckner</b> <<a href="mailto:lists@informa.tiker.net">lists@informa.tiker.net</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi there,<br><br>here's a patch that switches tone generation in indications.c over from using<br>actual floating point code to using a pregenerated sine table. This patch<br>allows my poor FPU-less Linksys router to successfully play a dialtone with
<br>almost zero CPU usage.<br><br>(If you care about the details: Generating the 8000-entry sine table at<br>startup takes a bit more than a second on that machine, which is a MIPS using<br>an FPU emulator. Since each sample out of playtones_generator() takes two
<br>sine evaluations and we're sampling at 8000Hz, the Linksys is too slow by<br>about a factor of two.)<br><br>This might even save some cycles on bigger setups. The patch applies cleanly<br>and works on 1.0.x with x>=7, on
1.2.x it needs to be told where asterisk.h<br>is, but otherwise seems to work fine.</blockquote><div><br>
Applause! <br>
<br>
Dialtone generation is also a problem on even a 500 Mhz Xscale (which is also fpu-less)<br>
</div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Andreas<br><br><br>_______________________________________________<br>Asterisk-Dev mailing list
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