Re: portaudio (again)
hi, could you please reply to the list? Chris Dobbs schrieb: Hi Stefan, Yes, I have realised OSS is not there now. If alsa is available , why do I only see the ctrl device for alsa : Nokia-N800-44-4:~# ls /dev/snd controlC0 Because its an io plugin. It routes audio to the dsp. There is no full fledged alsa driver. Have a look at /proc/asound/ for more audio system info. Also consider usingHAL if you want to lookup the audio-device. Stefan I would have expected to see something along the lines of [EMAIL PROTECTED]:/usr/dev$ ls /dev/snd controlC0 controlC1 controlC2 pcmC0D0c pcmC0D0p pcmC0D1c pcmC0D2c pcmC0D3c pcmC0D4p pcmC1D0c pcmC1D0p pcmC2D0c seq timer do Is there something I have to do to load this alsa io module as I cant find any reference to it? Thansk, -Chris - Original Message - From: Stefan Kost [EMAIL PROTECTED] To: Chris Dobbs [EMAIL PROTECTED] Cc: maemo-developers@maemo.org Sent: Sunday, August 17, 2008 12:21 PM Subject: Re: portaudio (again) Hi, Chris Dobbs schrieb: Hi all, I am trying to get portaudio working on the N800. I can compile and build everything ok but when I try to run the pa test programs on the N800 I get things this: Nokia-N800-44-4:~# ./pa_devs-v19 Expression 'ioctl( devHandle, SNDCTL_DSP_CHANNELS, temp )' failed in 'src/hostapi/oss/pa_unix_oss.c', line: 405 Expression 'ioctl( devHandle, SNDCTL_DSP_CHANNELS, temp )' failed in 'src/hostapi/oss/pa_unix_oss.c', line: 405 PortAudio version number = 1899 PortAudio version text = 'PortAudio V19-devel (built Aug 11 2008)' Number of devices = 0 -- I realised early on that PA used /dev/dsp so I did ln -s /dev/dsptask/pcm1 /dev/dsp Don't do that. There is no OSS. There is alsa in the form of an alsa io plugin that talks to the DSP. I have tried various others but to no avail, can anyone help I know PA supports OSS and ALSA which are both installed on the N800, although I think esd is the default driver. Esd is there for compatibillity reasons. Default linux audio (low level) api is alsa. For highlevel apis there is esound and gstreamer. Stefan -Chris ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
Re: portaudio (again)
Hi, Chris Dobbs schrieb: Hi all, I am trying to get portaudio working on the N800. I can compile and build everything ok but when I try to run the pa test programs on the N800 I get things this: Nokia-N800-44-4:~# ./pa_devs-v19 Expression 'ioctl( devHandle, SNDCTL_DSP_CHANNELS, temp )' failed in 'src/hostapi/oss/pa_unix_oss.c', line: 405 Expression 'ioctl( devHandle, SNDCTL_DSP_CHANNELS, temp )' failed in 'src/hostapi/oss/pa_unix_oss.c', line: 405 PortAudio version number = 1899 PortAudio version text = 'PortAudio V19-devel (built Aug 11 2008)' Number of devices = 0 -- I realised early on that PA used /dev/dsp so I did ln -s /dev/dsptask/pcm1 /dev/dsp Don't do that. There is no OSS. There is alsa in the form of an alsa io plugin that talks to the DSP. I have tried various others but to no avail, can anyone help I know PA supports OSS and ALSA which are both installed on the N800, although I think esd is the default driver. Esd is there for compatibillity reasons. Default linux audio (low level) api is alsa. For highlevel apis there is esound and gstreamer. Stefan -Chris ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
portaudio (again)
Hi all, I am trying to get portaudio working on the N800. I can compile and build everything ok but when I try to run the pa test programs on the N800 I get things this: Nokia-N800-44-4:~# ./pa_devs-v19 Expression 'ioctl( devHandle, SNDCTL_DSP_CHANNELS, temp )' failed in 'src/hostapi/oss/pa_unix_oss.c', line: 405 Expression 'ioctl( devHandle, SNDCTL_DSP_CHANNELS, temp )' failed in 'src/hostapi/oss/pa_unix_oss.c', line: 405 PortAudio version number = 1899 PortAudio version text = 'PortAudio V19-devel (built Aug 11 2008)' Number of devices = 0 -- I realised early on that PA used /dev/dsp so I did ln -s /dev/dsptask/pcm1 /dev/dsp I have tried various others but to no avail, can anyone help I know PA supports OSS and ALSA which are both installed on the N800, although I think esd is the default driver. -Chris ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
Re: portaudio (again)
Chris Dobbs wrote: I realised early on that PA used /dev/dsp so I did ln -s /dev/dsptask/pcm1 /dev/dsp I have tried various others but to no avail, can anyone help I know PA supports OSS and ALSA which are both installed on the N800, although I think esd is the default driver. I have never known OSS to work on the N800, but I could be wrong... There is an ALSA driver which seems to be somewhat unreliable for recording - at least, it doesn't work for me, but it could be my code rather than the driver itself. I believe (but this may have changed) that it's a package in extras that needs to be installed. This may have improved lately, but I haven't checked. Your mileage may vary. I've only really had success with GStreamer for recording audio on the Maemo platform. ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
portaudio
All, I managed to compile and build the V19 libportaudio.so library using the scratchbox CHINOOK environent. The test program pa_devs when run in the scratchbox envoronment works fine and reports 3 sound devices. When I try this on the actual N800 machine I get 0 devices found. Has anyone managed to get portaudio working on the N800 ? -Chris Dobbs ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
