[gst-devel] How to decrease CPU consumation for audio recording?

[Stefan Kost]

Am 14.12.2009 08:53, schrieb Zhao, Halley:
> I have a simple audio recording pipeline as below. To my surprise it
> consumes CPU as high as a 640x480 video recording. Could it be optimized
> to use CPU less?
> 
> gst-launch alsasrc ! audio/x-raw-int, rate=8000, width=16, depth=16,
> channel=1 ! queue ! audioconvert ! vorbisenc ! oggmux ! filesink
> location=test-audio.ogg

1.) optimize vorbis
2.) add orc opimizations to audioconvert (vorbis-enc wants float input)
3.) we need some optimizations for such pipleines so that audioencoder and
audiosrc can negotiate a (max-)buffer size. the encoder would then provide
pad_alloc (resuable buffers). this needs same work on audioconvert too

Stefan

> 
>  
> 
> on a netbook with ATOM 1.6GHZ, ~90 %CPU.
> 
>  
> 
> Thanks in advance.
> 
>  
> 
>  
> 
> *ZHAO, Halley (Aihua)*
> 
> Email: halley.zhao at intel.com <BLOCKED::mailto:aihua.zhao at intel.com>
> 
> Tel: +86(21)61166476
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