Hi Vishal
Did you check out the beagleboard schematics???Beagleboard supports only
line-in(line level input) and not mic-in.You cannot connect your headset to
the audio-in port and try recording. This is because Beagleboard doesn't has
a pre-amplifier which is required for converting your mic-in to
line-in.Regarding hooks just check out whether this works:
http://www.alsa-project.org/alsa-doc/alsa-lib/confhooks.html
Cheers
Aney
On Wed, Dec 23, 2009 at 12:01 PM, vishal bhoj <[email protected]> wrote:
> Since there is a fault on my beagleboard I am unable to capture from the
> onboard mic in.
>
> I am trying to use a usb camera on android.video capture is working.I want
> to use the uac input as mic on android.
>
> I am able to record from the usb mic by using alsa_arecord .
> I am trying to configure asound.conf but I don't understand how it has to
> be configured.I tried changing the device name in asound.conf
> This is how it looks as of now. Can anyone tell me what are hooks ?
>
>
> # #
> # # Mixer devices
> # #
> ctl.AndroidPlayback {
> type hw
> card omap3beagle # Can replace with drivers name from
> /proc/asound/cards
> }
>
> ctl.AndroidRecord {
> type hw
> card U0x46d0x9a2
> }
>
> pcm_slave.slave_record {
> pcm AndroidRecord_Speaker_normal_plug
> }
>
> pcm.AndroidRecord_Speaker_normal_plug {
> type plug
> slave.pcm {
> type hw
> card U0x46d0x9a2
> device 0
> }
> }
>
> # #
> # # Playback devices
> # #
> pcm.AndroidPlayback {
> type hooks
> slave.pcm {
> type hw
> card omap3beagle
> device 0
> }
> hooks.0 {
> type ctl_elems
> hook_args [
> {
> name 'DAC2 Digital Fine Playback Volume'
> value.0 63
> value.1 63
> }
> {
> name 'DAC2 Analog Playback Switch'
> value.0 true
> value.1 true
> }
> {
> name 'DAC2 Analog Playback Volume'
> value.0 18
> value.1 18
> }
> ]
> }
> }
>
> pcm.AndroidPlayback_Speaker {
> type hooks
> slave.pcm {
> type hw
> card omap3beagle
> device 0
> }
> hooks.0 {
> type ctl_elems
> hook_args [
>
> {
> name 'DAC2 Digital Fine Playback Volume'
> value.0 63
> value.1 63
> }
> {
> name 'DAC2 Analog Playback Switch'
> value.0 true
> value.1 true
> }
> {
> name 'DAC2 Analog Playback Volume'
> value.0 18
> value.1 18
> }
>
> ]
> }
> }
>
> pcm.AndroidPlayback_Speaker_normal {
> type hooks
> slave.pcm {
> type hw
> card omap3beagle
> device 0
> }
> hooks.0 {
> type ctl_elems
> hook_args [
>
> {
> name 'DAC2 Digital Fine Playback Volume'
> value.0 63
> value.1 63
> }
> {
> name 'DAC2 Analog Playback Switch'
> value.0 true
> value.1 true
> }
> {
> name 'DAC2 Analog Playback Volume'
> value.0 18
> value.1 18
> }
>
> ]
> }
>
> }
>
> pcm.AndroidPlayback_Bluetooth-A2DP_normal {
> type null
> }
>
> pcm.AndroidPlayback_Bluetooth-A2DP_ringtone {
> type null
> }
>
> pcm.AndroidRecord {
> type hooks
> slave slave_record
> hooks.0 {
> type ctl_elems
> hook_args [
> {
> name 'Analog Capture Volume'
> value.0 50
> value.1 50
> }
> {
> name 'Analog Right Capture Route'
> value AUXR
> }
> {
> name 'Analog Left Capture Route'
> value AUXL
> }
> {
> name 'TX1 Capture Route'
> value Analog
> }
>
> ]
> }
> }
>
> pcm.AndroidRecord_Speaker {
> type hooks
> slave slave_record
> hooks.0 {
> type ctl_elems
> hook_args [
> {
> name 'Analog Capture Volume'
> value.0 40
> value.1 40
> }
> {
> name 'Analog Right Capture Route'
> value AUXR
> }
> {
> name 'Analog Left Capture Route'
> value AUXL
> }
> {
> name 'TX1 Capture Route'
> value Analog
> }
>
> ]
> }
>
> }
>
> pcm.AndroidRecord_Speaker_normal {
> type hooks
> slave slave_record
> hooks.0 {
> type ctl_elems
> hook_args [
> {
> name 'Analog Capture Volume'
> value.0 30
> value.1 30
> }
> {
> name 'Analog Right Capture Route'
> value AUXR
> }
> {
> name 'Analog Left Capture Route'
> value AUXL
> }
> {
> name 'TX1 Capture Route'
> value Analog
> }
>
> ]
> }
>
> }
>
>
>
> --
> with regards vishal
> --
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