[alsa-devel] A minimal playback program does't work on my system
Hello,
Yesterday i have written. I answer to everybody. I am new and I don't know if there is special rule. Note : It would be good to have a forum to see the messages and answers in a pretty form.
the programme in c comes from
http://equalarea.com/paul/alsa-audio.html you can download it at https://mon-partage.fr/f/uvyw39wo/
To answer to Michael i have sound in my HDMI with that :
speaker-test -c2 -D hw:0,0
so i did that
gcc -o minimal_playback minimal_playback.c -lasound (warning comes)
and
./minimal_playback "plughw:0,0"
and i have this result :
Error of segmentation
Where i can an exemple with the possibility to do something like that :
./minimal_playback "plughw:0,0" "mywave.wav"
Thank you for your help
Hi
Il 15/ago/2014 19:20 "Carpon frédéric" frederic.carpon@yahoo.fr ha scritto:
Hello,
Yesterday i have written. I answer to everybody. I am new and I don't know if there is special
rule.
Note : It would be good to have a forum to see the messages and answers
in a pretty form.
the programme in c comes from
http://equalarea.com/paul/alsa-audio.html you can download it at https://mon-partage.fr/f/uvyw39wo/
To answer to Michael i have sound in my HDMI with that :
speaker-test -c2 -D hw:0,0
so i did that
gcc -o minimal_playback minimal_playback.c -lasound (warning
comes)
and
./minimal_playback "plughw:0,0"
and i have this result :
Error of segmentation
Where i can an exemple with the possibility to do something like that :
./minimal_playback "plughw:0,0" "mywave.wav"
aplay source code
I ask to test your small program on PC. Now I don't know about segmentation fault and I'm answering using mobile now. I will check tomorrow
Michael
Thank you for your help _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
Hi
On Fri, Aug 15, 2014 at 7:31 PM, Michael Trimarchi michael@amarulasolutions.com wrote:
Hi
Il 15/ago/2014 19:20 "Carpon frédéric" frederic.carpon@yahoo.fr ha scritto:
Hello,
Yesterday i have written. I answer to everybody. I am new and I don't know if there is special rule. Note : It would be good to have a forum to see the messages and answers in a pretty form.
the programme in c comes from
http://equalarea.com/paul/alsa-audio.html you can download it at https://mon-partage.fr/f/uvyw39wo/
To answer to Michael i have sound in my HDMI with that :
speaker-test -c2 -D hw:0,0
so i did that
gcc -o minimal_playback minimal_playback.c -lasound (warning comes)
and
./minimal_playback "plughw:0,0"
and i have this result :
Error of segmentation
if ((err = snd_pcm_hw_params_set_rate_near (playback_handle, hw_params, 44100, 0)) < 0) { fprintf (stderr, "cannot set sample rate (%s)\n", snd_strerror (err)); exit (1); }
Where i can an exemple with the possibility to do something like that :
./minimal_playback "plughw:0,0" "mywave.wav"
aplay source code
I ask to test your small program on PC. Now I don't know about segmentation fault and I'm answering using mobile now. I will check tomorrow
Michael
Thank you for your help _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
Hi
hate gmail
On Sat, Aug 16, 2014 at 1:50 PM, Michael Trimarchi michael@amarulasolutions.com wrote:
Hi
On Fri, Aug 15, 2014 at 7:31 PM, Michael Trimarchi michael@amarulasolutions.com wrote:
Hi
Il 15/ago/2014 19:20 "Carpon frédéric" frederic.carpon@yahoo.fr ha scritto:
Hello,
Yesterday i have written. I answer to everybody. I am new and I don't know if there is special rule. Note : It would be good to have a forum to see the messages and answers in a pretty form.
the programme in c comes from
http://equalarea.com/paul/alsa-audio.html you can download it at https://mon-partage.fr/f/uvyw39wo/
To answer to Michael i have sound in my HDMI with that :
speaker-test -c2 -D hw:0,0
so i did that
gcc -o minimal_playback minimal_playback.c -lasound (warning comes)
and
./minimal_playback "plughw:0,0"
and i have this result :
Error of segmentation
if ((err = snd_pcm_hw_params_set_rate_near (playback_handle, hw_params, 44100, 0)) < 0) { fprintf (stderr, "cannot set sample rate (%s)\n", snd_strerror (err)); exit (1); }
The error is how this function is called. Just change from snd_pcm_hw_params_set_rate_near
to
snd_pcm_hw_params_set_rate
let the example compile without warning
gcc playback.c `pkg-config --cflags --libs alsa` -o playback ./playback plughw:0,0
This example take some byte not initialized on the stack so it's not what you want. If you increase the loop from 10 to 1024 you have a nice noise
Michael
Where i can an exemple with the possibility to do something like that :
./minimal_playback "plughw:0,0" "mywave.wav"
aplay source code
I ask to test your small program on PC. Now I don't know about segmentation fault and I'm answering using mobile now. I will check tomorrow
Michael
Thank you for your help _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
-- | Michael Nazzareno Trimarchi Amarula Solutions BV | | COO - Founder Cruquiuskade 47 | | +31(0)851119172 Amsterdam 1018 AM NL | | [`as] http://www.amarulasolutions.com |
On Fri, 2014-08-15 at 18:19 +0100, Carpon frédéric wrote:
Hello,
Yesterday i have written. I answer to everybody. I am new and I don't know if there is special rule. Note : It would be good to have a forum to see the messages and answers in a pretty form.
the programme in c comes from
http://equalarea.com/paul/alsa-audio.html you can download it at https://mon-partage.fr/f/uvyw39wo/
To answer to Michael i have sound in my HDMI with that :
speaker-test -c2 -D hw:0,0
so i did that
gcc -o minimal_playback minimal_playback.c -lasound (warning comes)
and
./minimal_playback "plughw:0,0"
and i have this result :
Error of segmentation
Where i can an exemple with the possibility to do something like that :
./minimal_playback "plughw:0,0" "mywave.wav"
Thank you for your help _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
Probably you want to use a library that does type and endianes conversion like:
participants (3)
-
Carpon frédéric -
Joël Krähemann -
Michael Trimarchi