Hi Andrei,
>>> This adds audio HAL for handling SCO. Following needs to be added to
>>> audio_policy.conf:
>>>
>>> hsp {
>>> outputs {
>>> hsp {
>>> ...
>>> devices AUDIO_DEVICE_OUT_ALL_SCO
>>> ...
>>> }
>>> }
>>
>> if we need modifications to /etc/audio_policy.conf, we should have this
>> part of android/README or some other documentation. I also wonder if
>> this not also needs an inputs { } section since HSP is actually
>> full-duplex.
>
> Yes we need input section as well, this was just example, the complete
> sections would look like (copied from real device):
>
> ...
> hsp {
> outputs {
> hsp {
> sampling_rates 44100
> channel_masks AUDIO_CHANNEL_OUT_STEREO
> formats AUDIO_FORMAT_PCM_16_BIT
> devices AUDIO_DEVICE_OUT_ALL_SCO
> }
> }
> inputs {
> hsp {
> sampling_rates 44100
> channel_masks AUDIO_CHANNEL_IN_MONO
> formats AUDIO_FORMAT_PCM_16_BIT
> devices AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET
> }
> }
> }
> …
how does sampling_rates of 44100 work here? Standard SCO/eSCO is 8000. And then we have Wideband speech as well.
Regards
Marcel
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