two issues when recording sound

[Pablo Rodriguez]

Many thanks for your reply, Osmo.

I took a look, but C is almost unintelligible to me. I need more time to
read your code again.

Many thanks for your help,

Pablo


On 12/01/2013 10:09 PM, Osmo Antero wrote:
> Or pipeline_create_simple function.
> 
> 
> On Sun, Dec 1, 2013 at 9:06 PM, Osmo Antero <osmoma at gmail.com
> <mailto:osmoma at gmail.com>> wrote:
> 
>     Hello,
>     I do not know gst-python, but in my c-code based recorder I have to
>     create a bin from the (caps) capability string.
>     I think you should use the gst_parse_bin_from_description(...) 
> 
>     Please take a look at my recorder. It links to Gstreamer 1.0 (not 0.10).
>     http://bazaar.launchpad.net/~osmoma/audio-recorder/trunk/view/head:/src/gst-pipeline.c
>     Look for the "pipeline_create_complex" function.
> 
>     I have hard-coded some audio profiles (capability strings) in: 
>     http://bazaar.launchpad.net/~osmoma/audio-recorder/trunk/view/head:/src/media-profiles.c
>      
>     Audio-recorder itself:
>     https://launchpad.net/audio-recorder/
> 
>     Osmo (Moma) Antero
> 
> 
>     On Sun, Dec 1, 2013 at 6:33 PM, Pablo Rodriguez <oinos at gmx.es
>     <mailto:oinos at gmx.es>> wrote:
> 
>         Hi there,
> 
>         first of all, congratulations for your excellent work on
>         Gstreamer and
>         many thanks for releasing it under a free license.
> 
>         I have a small script that records sound from microphone to a
>         .wav file.
>         it is written in Python. You can find it at
>         https://github.com/ousia/iRaccoonShow/blob/master/recslides.py,
>         but the
>         relevant part is:
> 
>                 self.player = gst.Pipeline("player")
>                 #~ self.clock = self.player.get_clock()
> 
>                 self.source = gst.element_factory_make("alsasrc",
>         "alsa-source")
>                 #~ self.caps =
>         gst.Caps("audio/x-raw-int,rate=16000,channels=1")
> 
>                 self.encoder = gst.element_factory_make("wavenc", "wavenc")
> 
>                 self.fileout = gst.element_factory_make("filesink", "sink")
>                 self.fileout.set_property("location", self.audiofilename )
> 
>                 self.player.add(self.source, self.encoder, self.fileout)
>                 gst.element_link_many(self.source, self.encoder,
>         self.fileout)
> 
>         Before I forget, I use Fedora 19, which comes with
>         gstreamer-0.10.36.
> 
>         When I start the script, I always get the following error:
> 
>             ** Message: pygobject_register_sinkfunc is deprecated
>         (GstObject)
> 
>         How could I fix this?
> 
>         The other issue is the only commented line in the code snippet
>         above. I
>         would like to have the sound recorded with a lower frame rate
>         and only
>         one channel (otherwise, output files are huge).
> 
>         How should I integrate the self.caps line, so that I have an output
>         files with these features?
> 
>         Many thanks for your help,
> 
> 
>         Pablo


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