[gst-devel] Alsasink problem?

[Radivoje Jovanovic]

gst-launch audiotestsrc ! alsasink -v
works no problem. I have realized that if I play the song using virtual
device instead of the real device the thing works just fine. I have made the
virtual device as:
pcm.mydev {
    type plug
    slave {
        pcm default
        rate 32000

    }
}

My driver supports all the rates from 8KHz to 48KHz, but it seems to me that
the rate in this song is different than what my driver supports.
Is this rate conversion suppose to happen in ALSA automatically or I have to
use ALSA through virtual device in order to get unsupported parameters to
work on my driver? If so, is it possible to specify multiple rates in my
virtual device or I have to have one rate only?
Cheers,
Ogi

On Wed, Dec 29, 2010 at 10:21 PM, praveen pandey
<praveen.pande1 at gmail.com>wrote:

> does this pipeline works for you
>
>
> gst-launch audiotestsrc ! alsasink -v
>
>
>  BR,
> Praveen Pandey
>
> On Wed, Dec 29, 2010 at 3:00 AM, Radivoje Jovanovic <
> radivojejovanovic at gmail.com> wrote:
>
>> Yes this is an embedded system. As I stated in my previous post aplay,
>> alsamixer and playing MPEG4 movies through gstreamer works just fine.
>> Problem occurs when I try playing ogg files through the pipeline specified.
>> Cheers
>> Ogi
>>
>>
>> On Tue, Dec 28, 2010 at 12:10 PM, Michael Trimarchi <
>> michael at panicking.kicks-ass.org> wrote:
>>
>>> Hi
>>>
>>> On 12/28/2010 07:27 PM, Radivoje Jovanovic wrote:
>>> > Hi,
>>> > I have ALSA driver for my card and it works fine when I try playing
>>> sound
>>> > through aplay or watch movies through gstreamer, but if I try to do:
>>> > gst-launch-0.10 filesrc location=FILE_NAME.ogg ! oggdemux ! vorbisdec !
>>> > audioconvert ! audioresample ! alsasink
>>> > it comes back:
>>> > Pipeline is PREROLLING ...
>>> > ERROR: from element /GstPipeline:pipeline0/GstAlsaSink:alsasink0: Could
>>> not
>>> > get/set settings from/on resource.
>>> > Additional debug info:
>>> > gstalsasink.c(519): set_hwparams ():
>>> > /GstPipeline:pipeline0/GstAlsaSink:alsasink0:
>>> > Unable to set hw params for playback: Invalid argument
>>> > ERROR: pipeline doesn't want to preroll.
>>> > Setting pipeline to NULL ...
>>>
>>> is this an embedded system. Can you try to use alsamixer, aplay and
>>> arecord to test if your driver
>>> is working correctly?
>>> Michael Trimarchi
>>>
>>> >
>>> > So it comes back that alsa cannot setup correctly even though alsasink
>>> works
>>> > correctly when I play MPEG movies.
>>> > any thoughts?
>>> > Cheers
>>> > Ogi
>>> >
>>> >
>>> >
>>> >
>>> >
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