Hi Misa
Since the kernel from Embinux did not have ASOC support for OMAP3EVM, so
I am currently using the kernel provided by Mistral which has the ASOC
support for OMAP3EVM board.I am trying to enable the ASOC support for
OMAP3EVM board on the Embinux kernel.
Thanks & Regards
Ananth
On Tue, Nov 24, 2009 at 10:45 PM, Misael Lopez <[email protected]> wrote:
> Support for omap3evm board is already there in ASoC tree:
>
>
> http://git.kernel.org/?p=linux/kernel/git/broonie/sound-2.6.git;a=blob;f=sound/soc/omap/omap3evm.c;h=f484dcd634089562727d189f14615cbf84246d60;hb=97cef58521288ade8d957e4d568a3d409dea7d64
>
> You need to pick that machine file from SoC git tree and modify
> sound/soc/omap/Kconfig & Makefile accordingly. I guess you already
> have the kernel working for your omap3evm board.
>
> -Misa
>
> 2009/11/24 ananth <[email protected]>:
> > Hi Misa
> > Thanks a lot for your explaination.You were crystal clear in your
> > replies.I have one more doubt.A non-technical one.Ah, in the Android
> source
> > provided by Embinux, the kernel has ALSA SOC(ASOC) support only for
> > OMAP3Beagle board and it doesn't have the ALSA SOC support for OMAP3EVM
> > board.Without this ASOC support for OMAP3EVM Board we cant have Audio
> > working on OMAP3EVM board.So, do you have any idea of how to go about in
> > enabling ASOC for OMAP3EVM board?
> > Thanks & Regards
> > Aney
> > On Tue, Nov 24, 2009 at 12:28 PM, Misael Lopez <[email protected]>
> wrote:
> >>
> >> >> Q1.when i give : #alsa_amixer contents i see a lot of interfaces with
> >> >> different values set as default.So before capturing audio do i need
> to
> >> >> select a particular interface as capture source?Say for example i
> have
> >> >> something like:
> >> >>
> >> >> numid=17,iface=MIXER,name='Analog Left Capture Route'
> >> >> ; type=ENUMERATED,access=rw------,values=1,items=5
> >> >> ; Item #0 'Off'
> >> >> ; Item #1 'Main mic'
> >> >> ; Item #2 'Headset mic'
> >> >> ; Item #3 'AUXL'
> >> >> ; Item #4 'Carkit mic'
> >> >> : values=0
> >>
> >> That specific control select the analog source for the left channel on
> >> the TWL4030 codec.
> >> You should set it to the input you are interested in capture from,
> >> using alsa_mixer.
> >> There is a similar control for the analog source for right channel.
> >>
> >> >> Q2.Could you tell me how to set values for the above interface using
> >> >> alsa_amixer?I wanted to choose 'AUXL' present above.How must i enable
> >> >> it ?
> >>
> >> alsa_amixer is the renamed version of ALSA's amixer utility. To select
> >> AUXL you can do:
> >>
> >> alsa_amixer cset numid=17 3
> >>
> >> >> 'values=1' what does this mean?
> >>
> >> It means that the control can have a single value. Consider the case
> >> of a stereo volume control, it should have values=2 as you can set the
> >> volume (value) for each channel.
> >>
> >> >> Q3.I am bit confused about line-in and mic-in.whats the difference
> >> >> between line-in and mic-in?From the Beagle Board schematics i found
> >> >> out that it uses line-in.Does this mean that i cannot capture audio
> >> >> via my microphone ?If at all i need to record my own voice how can i
> >> >> do it?
> >>
> >> I think mic-in has a mic bias, and line-in does not. You should also
> >> ensure that the analog sources are selected accordingly.
> >>
> >> Regards,
> >> -Misa
> >>
> >> 2009/11/24 ani <[email protected]>:
> >> > Please answer this question as i also have same queries!!
> >> >
> >> > On Nov 18, 10:57 pm, aney <[email protected]> wrote:
> >> >> Hi Ben
> >> >>
> >> >> >I think that you should be able to symlink alsa_arecord to the
> >> >> > alsa_aplay binary for recording:
> >> >>
> >> >> You are spot on!!! I was able to symlink alsa_arecord to
> >> >> alsa_aplay.Now i am able to capture audio using alsa_arecord:-)I
> >> >> connected the Line-in of my Media Player to the line-in on my
> >> >> beagleboard.I used the alsa_arecord application for capturing audio
> >> >> and i could play it back sucessfully:-)thanks a lot for your
> >> >> suggestion Ben.
> >> >>
> >> >> >What does your logcat output look like? Any audio errors?
> >> >>
> >> >> I dont get any audio errors.
> >> >>
> >> >> >What's the sound chip on the Beagle?
> >> >>
> >> >> The beagle board uses TWL4030 as its sound chip.It
> >> >> performs as an audio codec engine as well as a power module.when i
> >> >> do : #cat /proc/asound/cards i get the following:
> >> >>
> >> >> 0 [omap3beagle ]: twl4030 - omap3beagle
> >> >> omap3beagle (twl4030)
> >> >>
> >> >> > Do you have an /etc/asound.conf defined?
> >> >>
> >> >> No i dont have /etc/asound.conf file.Is there any serious
> >> >> consequence i might experience for not having this file?
> >> >>
> >> >> Ben i have a couple of questions for you.Could you kindly clarify it
> ?
> >> >>
> >> >> Q1.when i give : #alsa_amixer contents i see a lot of interfaces with
> >> >> different values set as default.So before capturing audio do i need
> to
> >> >> select a particular interface as capture source?Say for example i
> have
> >> >> something like:
> >> >>
> >> >> numid=17,iface=MIXER,name='Analog Left Capture Route'
> >> >> ; type=ENUMERATED,access=rw------,values=1,items=5
> >> >> ; Item #0 'Off'
> >> >> ; Item #1 'Main mic'
> >> >> ; Item #2 'Headset mic'
> >> >> ; Item #3 'AUXL'
> >> >> ; Item #4 'Carkit mic'
> >> >> : values=0
> >> >>
> >> >> Q2.Could you tell me how to set values for the above interface using
> >> >> alsa_amixer?I wanted to choose 'AUXL' present above.How must i enable
> >> >> it ?'values=1' what does this mean?
> >> >>
> >> >> Q3.I am bit confused about line-in and mic-in.whats the difference
> >> >> between line-in and mic-in?From the Beagle Board schematics i found
> >> >> out that it uses line-in.Does this mean that i cannot capture audio
> >> >> via my microphone ?If at all i need to record my own voice how can i
> >> >> do it?
> >> >>
> >> >> Thanks & Regards
> >> >> Ananth
> >> >>
> >> >> On Nov 17, 6:46 am, Ben Friedberg <[email protected]> wrote:
> >> >>
> >> >> > Ananth,
> >> >>
> >> >> > I think that you should be able to symlink alsa_arecord to the
> >> >> > alsa_aplay binary for recording. What does your logcat output look
> >> >> > like? Any audio errors? What's the sound chip on the Beagle? Do
> >> >> > you
> >> >> > have an /etc/asound.conf defined? For recording, one thing that I
> >> >> > found (can't remember where, unfortunately, but prolly on this
> board)
> >> >> > was that my sound hardware couldn't handle alsa's default 2-channel
> >> >> > record. I had to enable 1-channel record on the default device
> with
> >> >> > this:
> >> >>
> >> >> > include: git diff external/alsa-lib/include/config.h
> >> >> > diff --git a/include/config.h b/include/config.h
> >> >> > index 52dfc11..9b6ce18 100644
> >> >> > --- a/include/config.h
> >> >> > +++ b/include/config.h
> >> >> > @@ -46,10 +46,11 @@
> >> >> > /* #undef BUILD_PCM_PLUGIN_MULAW */
> >> >>
> >> >> > /* Build PCM rate plugin */
> >> >> > /* #undef BUILD_PCM_PLUGIN_RATE */
> >> >>
> >> >> > /* Build PCM route plugin */
> >> >> > /* #undef BUILD_PCM_PLUGIN_ROUTE */
> >> >> > +#define BUILD_PCM_PLUGIN_ROUTE "1"
> >> >>
> >> >> > /* Build raw MIDI component */
> >> >> > /* #undef BUILD_RAWMIDI */
> >> >>
> >> >> > and updating this line in
> hardware/alsa_sound/AudioHardwareALSA.cpp:
> >> >>
> >> >> > if (err < 0) {
> >> >> > // None of the Android defined audio devices exist. Open a
> >> >> > generic one.
> >> >> > //**** THIS ONE -> devName = "hw:00,0";
> >> >> > devName = "default"; //This is the line you want
> >> >> > err = snd_pcm_open(&mHandle, devName, mDefaults->direction,
> >> >> > 0);
> >> >> > if (err < 0) {
> >> >> > // Last resort is the NULL device (i.e. the bit
> bucket).
> >> >> > devName = _nullALSADeviceName;
> >> >> > err = snd_pcm_open(&mHandle, devName,
> >> >> > mDefaults->direction, 0);
> >> >>
> >> >> > }
> >> >> > }
> >> >>
> >> >> > On Nov 13, 10:15 pm, aney <[email protected]> wrote:
> >> >>
> >> >> > > Hi all
> >> >> > > I am working on TI's Beagle board running Android kernel on
> top
> >> >> > > of
> >> >> > > it.I am validating Audio Interface on Beagle board. I tested
> >> >> > > Audio-out
> >> >> > > by playing media file using Mediaplayer application.Audio out is
> >> >> > > fine.Now i am facing problems in capturing Audio.I connect the
> >> >> > > Mic-in
> >> >> > > of headset to audio-in on Beagle board and run the TonePicker and
> >> >> > > SoundRecorder applications for capturing audio.But the size of
> the
> >> >> > > captured file is always 0 bytes. Can someone tell me which
> >> >> > > application
> >> >> > > to use for capturing audio?Can alsa utils be used for capturing
> >> >> > > audio?
> >> >> > > The external/alsa_utils/aplay/aplay.c file speaks about audio
> >> >> > > recording and playback.Can it be used for capturing audio?
> >> >>
> >> >> > > Thanks & Regards
> >> >> > > Ananth- Hide quoted text -
> >> >>
> >> >> > - Show quoted text -
> >> >>
> >> >>
> >> >
> >> > --
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> >>
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