This patch extends SetProperty method of the Handsfree interface
allowing to disable echo canceling and noise reduction feature in
the audio gateway through a D-Bus method call. Once disabled, it
is not allowed to enable it using this procedure.
According to Bluetooth HFP spec: By default, if the AG supports its
own embedded echo canceling and/or noise reduction functions, it shall
have them activated until the AT+NREC command is received. The
configuration set by the HF shall by used by the AG while the Service
Level Connection is active.
Since there isn't a command to query the current value, it is being
assumed that Echo Canceling and Noise Reduction is enabled when the
connection is established and the gateway supports this feature.
HFP 1.6 adds a new feature called Codec Negotitation. For the HF Role,
this feature is stored in bit 8 of the supported features
bitmap.
This patch changes the range of valid HF feature bitmaps to 2^8-1.
Each time an agent registers itself, we check if we support deferred
setup and if the agent has mSBC as a codec, if both checks are true,
we enable wideband speech support.
'defer_setup' will be one of the inputs when enabling or disabling
support for wideband speech codecs, we will only enable wideband
speech support if the kernel supports deferred setup.
So, we have to have this information available, in this case it means
a global variable.
This patch removes the hard-coded CVSD codec, and adds the selected
codec in the NewConnection method call, notifying the agent the codec
previously selected for the audio connection.
This can be set by the modem driver to indicate that the device is
always in the online state when it is enabled. This is useful for
modem drivers that handle both CDMA and GSM devices.
When calling the card's .Connect() method, we should be able to
establish a SCO connection.
Right now, we only have support for establishing the SCO connection
directly, this is what is expected from HFP 1.5 HF/AG devices.
The Audio Card is being created when the NewConnection from BlueZ
Profile is received, and registered when the service level connection
negotiation finishes. This patch rejects SCO connection if the SCO
incoming connection arrives when the service level negotiation is
ongoing.
This patch adds Agent NewConnection call. The card object path, the SCO
file descriptor, and the codec are being passed to the agent. This
initial version supports CVSD codec only.
Unlike the previous implementation in the plugin, the SCO/SLC matching
is done based on the Audio Card objects.
Audio Cards are created when the RFCOMM fd descriptor is received, and
registered when the service level connetion is established.
This patch adds the Bluetooth utility funtions and socket type
declarations to a new header src/bluetooth.h, allowing to share it
between core, and plugins.
Claudio Takahasi
Paulo Borges
João Paulo Rechi Vita
Vinicius Costa Gomes
Denis Kenzior
Forest Bond