gstreamer-embedded Digest, Vol 9, Issue 2

[Saravanan Vijayaperumal]

     Thank you all for your responses. i need a suggestion for the below

Which is the best audio file format to stream from host to target with low cpu usage. i need to stream 6 audio  files at a time, i am using rtp server and my target board is am335x.


Regards,
Saravanan
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From: gstreamer-embedded-bounces+saravanan.vijayaperumal=lnties.com at lists.freedesktop.org [gstreamer-embedded-bounces+saravanan.vijayaperumal=lnties.com at lists.freedesktop.org] on behalf of gstreamer-embedded-request at lists.freedesktop.org [gstreamer-embedded-request at lists.freedesktop.org]
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Subject: gstreamer-embedded Digest, Vol 9, Issue 2

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Today's Topics:

   1. Re: How to reduce cpu usage (Stuart Gray)
   2. Re: How to reduce cpu usage (Stefan Sauer)


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Message: 1
Date: Sat, 15 Oct 2011 08:13:38 +0800
From: Stuart Gray <stuart68 at gmail.com>
Subject: Re: How to reduce cpu usage
To: gstreamer-embedded at lists.freedesktop.org
Message-ID:
        <CAG2RAVYGDB3ZYrbHi-0M7z150nP8o0xaz_F88ocXhcKmSfeNUw at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

Hi,

I would add a queue element just after the rtspsrc. I have a similar
pipeline running on an omapl-138 and it can decode mp3, flac, ALAC , aiff
and wav with no issues within the software domain. I use

       souphttpsrc ! queue2 ! decodebin2 ! audioconvert ! audioresample !
alsasink

It works extremely well with CPU running at 372mHz.

  I am streaming mp3 audio file from host to AM1808 BOARD using gstreamer
> and RTP server, I am able to stream using the following command.
>
> gst-launch-0.10 -v rtspsrc location=rtsp://
> 192.168.174.66:8554/mp3AudioTest ! rtpmpadepay ! mad ! audioconvert !
> alsasink &
>
> But my CPU usage time is very high. Please suggest, how do i reduce the cpu
> usage? How do i optimize the gstreamer?
>
>
I did not have to do any optimizations to gstreamer, just play around with
the queue2 settings.

Stuart
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Message: 2
Date: Sat, 15 Oct 2011 16:17:41 +0200
From: Stefan Sauer <ensonic at hora-obscura.de>
Subject: Re: How to reduce cpu usage
To: gstreamer-embedded at lists.freedesktop.org
Message-ID: <4E999605.2040002 at hora-obscura.de>
Content-Type: text/plain; charset=ISO-8859-1

On 10/13/2011 11:49 AM, Victor Manuel J?quez Leal wrote:
> On Thu, Oct 13, 2011 at 11:14 AM, Saravanan Vijayaperumal
> <Saravanan.Vijayaperumal at lnties.com> wrote:
>> gst-launch-0.10 -v rtspsrc location=rtsp://192.168.174.66:8554/mp3AudioTest
>> ! rtpmpadepay ! mad ! audioconvert ! alsasink &
>>
>> But my CPU usage time is very high. Please suggest, how do i reduce the cpu
>> usage? How do i optimize the gstreamer?
> mad and audioconvert are very cpu intensive elements.
Exactly thats the issue. You can try this one:
https://github.com/lazka/gst-mpg123

Stefan

> You would need to develop/use a mp3 decoder that use the dsp in the
> omap3, or develop/use a mp3 decoder that make use of the neon
> instructions instead of the generic ones, and finally get  rid of the
> audioconvert, delivering the raw audio as is consumed by alsa.
>
> Either case you'd need to develop it, or buy it, because i'm not aware
> of open source version of those elements.
>
> cheers,
>
> vmjl
> _______________________________________________
> gstreamer-embedded mailing list
> gstreamer-embedded at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-embedded



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