[pulseaudio-discuss] [PATCH] bluetooth: Wideband speech implementaion

[Georg Chini]

On 15.08.2018 09:24, Pali Rohár wrote:
> On Wednesday 15 August 2018 09:24:04 Sathish Narasimman wrote:
>> Hi Pali,
>>
>> On Wed, Aug 15, 2018 at 1:31 AM, Pali Rohár <pali.rohar at gmail.com> wrote:
>>
>>> On Tuesday 14 August 2018 22:49:27 Luiz Augusto von Dentz wrote:
>>>> Hi Pali,
>>>>
>>>> On Tue, Aug 14, 2018 at 10:28 PM Pali Rohár <pali.rohar at gmail.com>
>>> wrote:
>>>>> On Tuesday 14 August 2018 19:44:49 Sathish Narasimman wrote:
>>>>>> mSBC-encoded streams for HFP. The wideband speec encoding and
>>> decoding
>>>>>> is implemeted with this patch. This patch was refered from original
>>>>>> patch of Joao Paula Rechi Vita and was verified with the supported
>>>>>> bluetooth controller.
>>>>>>
>>>>>> Signed-off-by: Sathish Narasimman <sathish.narasimman at intel.com>
>>>>>> ---
>>>>>>   src/modules/bluetooth/backend-ofono.c        |  20 +-
>>>>>>   src/modules/bluetooth/module-bluez5-device.c | 371
>>> ++++++++++++++++++++++++++-
>>>>>>   2 files changed, 377 insertions(+), 14 deletions(-)
>>>>> Hi! This looks great. What about support also for other backends, not
>>>>> only ofono?
>>>> Afaik only oFono supports WBS negotiation.
>>> IIRC codec negotiation is done via AT commands. Therefore native backend
>>> and its AT parser could be extended to support it.
>>>
>> AFAIK i was not able to find Handsfree profile in native backend. I see
>> only the headset profile in which codec negotiation is not available.
>> please point me the right place where AT commands are implented in PA for
>> HFP profile in native backend. i can try the best.
> rfcomm_io_callback function in backend-native.c. There is implemented AT
> parser. For codec selection is needed to issue some AT command,
> therefore that code is needed to extend...
>
Currently there is no HFP support in the native backend. There have
been patches by James Bottomley to implement HFP, but they have
never been merged due to remaining issues. See here:
https://patchwork.freedesktop.org/series/30716/