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ccutebenbi / siphon

Automatically exported from code.google.com/p/siphon
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Support for Siren 7 and 14 codecs #308

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
Since the next version will be based on pjsip 1.4, how about adding in
these codecs?

Original issue reported on code.google.com by hartnett...@gmail.com on 1 Oct 2009 at 5:56

GoogleCodeExporter commented 8 years ago 
In theory, it would be possible, but g7221 is not optimized :-( So I think the 
CPU is
not enough strong.
Some tests are necessary.
Do you know SIP providers that use g722.1 ?

Original comment by samuelv0...@gmail.com on 3 Oct 2009 at 9:53

GoogleCodeExporter commented 8 years ago 
G7221 is a fairly lightweight algorithm, so it may in fact fit within the 
available
cpu cycles even without optimization. 
I don't think you'll find a SIP provider who explicitly says they allow G.722.x
calls. But you should be able to test by calling directly to an IP address?

Original comment by hartnett...@gmail.com on 5 Oct 2009 at 1:20

GoogleCodeExporter commented 8 years ago 
As g722 codec, g722.1 codecs work wi 16 or 32 kHz (issue 289), so we need to 
resample
signal because Siphon works to 8kHZ.
And the resample step use much CPU.

Antoher things, for the moment it's impossible do disable g722 and not g722.1

Original comment by samuelv0...@gmail.com on 11 Oct 2009 at 9:19

GoogleCodeExporter commented 8 years ago 
resampling the 8khz I/O to 16 or 32 will mean audio bandwidth is still below 
4KHz so
there is no value in having resampled g.722.1

Original comment by hartnett...@gmail.com on 13 Oct 2009 at 3:31

GoogleCodeExporter commented 8 years ago 
Issue 289 has been merged into this issue.

Original comment by samuelv0...@gmail.com on 7 Nov 2009 at 11:51

GoogleCodeExporter commented 8 years ago 
I released 2.2 rc2 on http://code.google.com/p/siphon/downloads/list
I tried to include g722 and resample but I didn't test.

If you can try and tell me if it works. If yes, I will enable g722.1 too.

Original comment by samuelv0...@gmail.com on 7 Nov 2009 at 11:52

GoogleCodeExporter commented 8 years ago 
Partially working! I can hear G.722 audio coming from my hardphone, but no G.722
audio is heard back on Siphon earpiece.

Also, G.722 is 4KHz filtered, I assume due to resampler. G.722 is not useful 
unless
it is wideband (16KHz native sampling)

Original comment by hartnett...@gmail.com on 9 Nov 2009 at 5:58

GoogleCodeExporter commented 8 years ago 
Fixed.
The RC 4 will include the fix.

Original comment by samuelv0...@gmail.com on 16 Nov 2009 at 10:27

GoogleCodeExporter commented 8 years ago 
I just release RC 4 : http://code.google.com/p/siphon/downloads/list

Original comment by samuelv0...@gmail.com on 1 Dec 2009 at 10:50