CPU utilization when using gst-launch play mp3

[brad2012]

Dears,

Is there any method to reduce CPU utilization when play mp3?

When I try to play mp3 by the command:
gst-launch-0.10 filesrc location=/var/tmp/usb/sda1/audio_src/1503-9.mp3 ! mad ! audioconvert ! audioresample ! audio/x-raw-int, rate=48000,width=16,endianness=4321 ! alsasink device="hw:0,0"

the alsa device is I2S+audio codec in our embedd platform.
the device report sample rate available is 48K
but I have to set playing rate to audio codec  is 8Khz, such that the audio data can be sent to codec.

But it is now problem about playing .wav file with sample rate conversion by "aplay" on our embedded platform (without any modificiation).

Is it possible to reduce CPU utilization about gst-launch playing mp3 audio?

[Stefan Sauer]

On 06/29/2012 10:11 AM, brad2012 wrote:
> Dears,
>
> Is there any method to reduce CPU utilization when play mp3?
>
> When I try to play mp3 by the command:
> gst-launch-0.10 filesrc location=/var/tmp/usb/sda1/audio_src/1503-9.mp3 !
> mad ! audioconvert ! audioresample ! audio/x-raw-int,
> rate=48000,width=16,endianness=4321 ! alsasink device="hw:0,0"
Yes there is a simple way to lower the CPU load. Use an optimized mp3
decoder. Avoid audioconvert (by ensuring your mp3 decoder will output in
a format suitable for your sink). Also fix your alsa driver to properly
report formats, so that you don't need the capsfilter.

Stefan

>
> the alsa device is I2S+audio codec in our embedd platform.
> the device report sample rate available is 48K
> but I have to set playing rate to audio codec  is 8Khz, such that the audio
> data can be sent to codec.
>
> But it is now problem about playing .wav file with sample rate conversion by
> "aplay" on our embedded platform (without any modificiation).
>
> Is it possible to reduce CPU utilization about gst-launch playing mp3 audio?
>
>
>
>
> --
> View this message in context: http://gstreamer-devel.966125.n4.nabble.com/CPU-utilization-when-using-gst-launch-play-mp3-tp4655434.html
> Sent from the GStreamer-devel mailing list archive at Nabble.com.
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

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[Jan Schmidt-6]

On Fri, 2012-06-29 at 15:25 +0200, Stefan Sauer wrote:

> On 06/29/2012 10:11 AM, brad2012 wrote:
> > Dears,
> >
> > Is there any method to reduce CPU utilization when play mp3?
> >
> > When I try to play mp3 by the command:
> > gst-launch-0.10 filesrc location=/var/tmp/usb/sda1/audio_src/1503-9.mp3 !
> > mad ! audioconvert ! audioresample ! audio/x-raw-int,
> > rate=48000,width=16,endianness=4321 ! alsasink device="hw:0,0"
> Yes there is a simple way to lower the CPU load. Use an optimized mp3
> decoder. Avoid audioconvert (by ensuring your mp3 decoder will output in
> a format suitable for your sink). Also fix your alsa driver to properly
> report formats, so that you don't need the capsfilter.

Another couple of options: run gst-inspect on audioconvert and
audioresample, and note that both have options for reducing the amount
of work they do (turning off dithering for audioconvert, and reducing
the quality/filter length of the resampling)

- Jan.

>
> Stefan
> >
> > the alsa device is I2S+audio codec in our embedd platform.
> > the device report sample rate available is 48K
> > but I have to set playing rate to audio codec  is 8Khz, such that the audio
> > data can be sent to codec.
> >
> > But it is now problem about playing .wav file with sample rate conversion by
> > "aplay" on our embedded platform (without any modificiation).
> >
> > Is it possible to reduce CPU utilization about gst-launch playing mp3 audio?
> >
> >
> >
> >
> > --
> > View this message in context: http://gstreamer-devel.966125.n4.nabble.com/CPU-utilization-when-using-gst-launch-play-mp3-tp4655434.html
> > Sent from the GStreamer-devel mailing list archive at Nabble.com.
> > _______________________________________________
> > gstreamer-devel mailing list
> > [hidden email]
> > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

--
Jan Schmidt <[hidden email]>

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[brad2012]

Dears,

Could you kindly show the example about the option?
Since I  do not enable Orc lib.
I do not have idea about the option to reduce CPU utilizatgion.
And do you have suggestion about mp3 decoder?
mad is used currently.

Thanks!
sOHO

2012/6/29 Jan Schmidt <[hidden email]>:

> On Fri, 2012-06-29 at 15:25 +0200, Stefan Sauer wrote:
>> On 06/29/2012 10:11 AM, brad2012 wrote:
>> > Dears,
>> >
>> > Is there any method to reduce CPU utilization when play mp3?
>> >
>> > When I try to play mp3 by the command:
>> > gst-launch-0.10 filesrc location=/var/tmp/usb/sda1/audio_src/1503-9.mp3 !
>> > mad ! audioconvert ! audioresample ! audio/x-raw-int,
>> > rate=48000,width=16,endianness=4321 ! alsasink device="hw:0,0"
>> Yes there is a simple way to lower the CPU load. Use an optimized mp3
>> decoder. Avoid audioconvert (by ensuring your mp3 decoder will output in
>> a format suitable for your sink). Also fix your alsa driver to properly
>> report formats, so that you don't need the capsfilter.
>
> Another couple of options: run gst-inspect on audioconvert and
> audioresample, and note that both have options for reducing the amount
> of work they do (turning off dithering for audioconvert, and reducing
> the quality/filter length of the resampling)
>
> - Jan.
>
>>
>> Stefan
>> >
>> > the alsa device is I2S+audio codec in our embedd platform.
>> > the device report sample rate available is 48K
>> > but I have to set playing rate to audio codec  is 8Khz, such that the audio
>> > data can be sent to codec.
>> >
>> > But it is now problem about playing .wav file with sample rate conversion by
>> > "aplay" on our embedded platform (without any modificiation).
>> >
>> > Is it possible to reduce CPU utilization about gst-launch playing mp3 audio?
>> >
>> >
>> >
>> >
>> > --
>> > View this message in context: http://gstreamer-devel.966125.n4.nabble.com/CPU-utilization-when-using-gst-launch-play-mp3-tp4655434.html
>> > Sent from the GStreamer-devel mailing list archive at Nabble.com.
>> > _______________________________________________
>> > gstreamer-devel mailing list
>> > [hidden email]
>> > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
>>
>> _______________________________________________
>> gstreamer-devel mailing list
>> [hidden email]
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
> --
> Jan Schmidt <[hidden email]>
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

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[Stefan Sauer]

On 07/02/2012 12:50 PM, Soho Soho123 wrote:
> Dears,
>
> Could you kindly show the example about the option?
Jan mentoned the options below and how you can see them.
> Since I  do not enable Orc lib.
You want to use orc if you use elements that have orc optimizations.
> I do not have idea about the option to reduce CPU utilizatgion.
> And do you have suggestion about mp3 decoder?
> mad is used currently.
mad focuses on quality. having a mp3 decoder based on libmpeg123 would
be faster, but no one finished the work on it ever.

Stefan

>
> Thanks!
> sOHO
>
> 2012/6/29 Jan Schmidt <[hidden email]>:
>> On Fri, 2012-06-29 at 15:25 +0200, Stefan Sauer wrote:
>>> On 06/29/2012 10:11 AM, brad2012 wrote:
>>>> Dears,
>>>>
>>>> Is there any method to reduce CPU utilization when play mp3?
>>>>
>>>> When I try to play mp3 by the command:
>>>> gst-launch-0.10 filesrc location=/var/tmp/usb/sda1/audio_src/1503-9.mp3 !
>>>> mad ! audioconvert ! audioresample ! audio/x-raw-int,
>>>> rate=48000,width=16,endianness=4321 ! alsasink device="hw:0,0"
>>> Yes there is a simple way to lower the CPU load. Use an optimized mp3
>>> decoder. Avoid audioconvert (by ensuring your mp3 decoder will output in
>>> a format suitable for your sink). Also fix your alsa driver to properly
>>> report formats, so that you don't need the capsfilter.
>> Another couple of options: run gst-inspect on audioconvert and
>> audioresample, and note that both have options for reducing the amount
>> of work they do (turning off dithering for audioconvert, and reducing
>> the quality/filter length of the resampling)
>>
>> - Jan.
>>
>>> Stefan
>>>> the alsa device is I2S+audio codec in our embedd platform.
>>>> the device report sample rate available is 48K
>>>> but I have to set playing rate to audio codec  is 8Khz, such that the audio
>>>> data can be sent to codec.
>>>>
>>>> But it is now problem about playing .wav file with sample rate conversion by
>>>> "aplay" on our embedded platform (without any modificiation).
>>>>
>>>> Is it possible to reduce CPU utilization about gst-launch playing mp3 audio?
>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> View this message in context: http://gstreamer-devel.966125.n4.nabble.com/CPU-utilization-when-using-gst-launch-play-mp3-tp4655434.html
>>>> Sent from the GStreamer-devel mailing list archive at Nabble.com.
>>>> _______________________________________________
>>>> gstreamer-devel mailing list
>>>> [hidden email]
>>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> [hidden email]
>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>> --
>> Jan Schmidt <[hidden email]>
>>
>> _______________________________________________
>> gstreamer-devel mailing list
>> [hidden email]
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> _______________________________________________
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> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

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[brad2012]

Dears,

the audioconvert and audioresample are both necessary, since our
embedd platform just support:
big endian, 48Khz sample, this is not popular format in most of mp3 audio.
and
i do not have idea about the options of audioconvert and audioresample,
do you have any example about the usage of  audioconvert and audioresample?
or how about the example I can input option for audioconvert and audioresample?

Thanks!


2012/7/5 Stefan Sauer <[hidden email]>:

> On 07/02/2012 12:50 PM, Soho Soho123 wrote:
>> Dears,
>>
>> Could you kindly show the example about the option?
> Jan mentoned the options below and how you can see them.
>> Since I  do not enable Orc lib.
> You want to use orc if you use elements that have orc optimizations.
>> I do not have idea about the option to reduce CPU utilizatgion.
>> And do you have suggestion about mp3 decoder?
>> mad is used currently.
> mad focuses on quality. having a mp3 decoder based on libmpeg123 would
> be faster, but no one finished the work on it ever.
>
> Stefan
>>
>> Thanks!
>> sOHO
>>
>> 2012/6/29 Jan Schmidt <[hidden email]>:
>>> On Fri, 2012-06-29 at 15:25 +0200, Stefan Sauer wrote:
>>>> On 06/29/2012 10:11 AM, brad2012 wrote:
>>>>> Dears,
>>>>>
>>>>> Is there any method to reduce CPU utilization when play mp3?
>>>>>
>>>>> When I try to play mp3 by the command:
>>>>> gst-launch-0.10 filesrc location=/var/tmp/usb/sda1/audio_src/1503-9.mp3 !
>>>>> mad ! audioconvert ! audioresample ! audio/x-raw-int,
>>>>> rate=48000,width=16,endianness=4321 ! alsasink device="hw:0,0"
>>>> Yes there is a simple way to lower the CPU load. Use an optimized mp3
>>>> decoder. Avoid audioconvert (by ensuring your mp3 decoder will output in
>>>> a format suitable for your sink). Also fix your alsa driver to properly
>>>> report formats, so that you don't need the capsfilter.
>>> Another couple of options: run gst-inspect on audioconvert and
>>> audioresample, and note that both have options for reducing the amount
>>> of work they do (turning off dithering for audioconvert, and reducing
>>> the quality/filter length of the resampling)
>>>
>>> - Jan.
>>>
>>>> Stefan
>>>>> the alsa device is I2S+audio codec in our embedd platform.
>>>>> the device report sample rate available is 48K
>>>>> but I have to set playing rate to audio codec  is 8Khz, such that the audio
>>>>> data can be sent to codec.
>>>>>
>>>>> But it is now problem about playing .wav file with sample rate conversion by
>>>>> "aplay" on our embedded platform (without any modificiation).
>>>>>
>>>>> Is it possible to reduce CPU utilization about gst-launch playing mp3 audio?
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> View this message in context: http://gstreamer-devel.966125.n4.nabble.com/CPU-utilization-when-using-gst-launch-play-mp3-tp4655434.html
>>>>> Sent from the GStreamer-devel mailing list archive at Nabble.com.
>>>>> _______________________________________________
>>>>> gstreamer-devel mailing list
>>>>> [hidden email]
>>>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>>
>>>> _______________________________________________
>>>> gstreamer-devel mailing list
>>>> [hidden email]
>>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>> --
>>> Jan Schmidt <[hidden email]>
>>>
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> [hidden email]
>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>> _______________________________________________
>> gstreamer-devel mailing list
>> [hidden email]
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
> _______________________________________________
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> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

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