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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.
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This patch adds echo canceling and noise reduction implementation to
hfpmodem. It adds the implementation to send the command "AT+NREC=0"
to the AG.
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This patch extends the handsfree driver adding echo canceling and noise
reduction callback to allow disabling this feature in the audio gateway.
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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.
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This patch adds EchoCancelingNoiseReduction property to GetProperties
method of Handsfree interface.
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This patch adds "echo-canceling-and-noise-reduction" to "Features"
property of the Handsfree interface.
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This patch adds echo canceling and noise reduction property to Handsfree
interface, allowing the handsfree unit to disable this feature in the
audio gateway. The HFP spec defines the procedure to turn off echo
canceling and noise reduction only, it is not allowed to enable this
feature from the HF unit.
According to Bluetooth HFP 1.6 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 from the HF
unit. From then on, and until the current Service Level Connection is
dropped for any reason, the AG shall disable these functions every time
an Audio Connection is established.
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When a RequestDisconnect() is received, the socket must be closed.
This way, the related emulator will be freed.
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A watch to G_IO_HUP is added to remove the file descriptor when the
emulator is automatically disconnected when its GAtServer closes.
We use a dupped file descriptor because the events aren't delivered to
the file descriptor who originated them.
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We need to store active connections so we can disconnect them at
RequestDisconnect().
When we remove a connection from the hash, we also close it.
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hfp.h should store all HFP related definitions.
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For example, in the case of a remote-initiated pairing, the device may
be created and Paired first, then the UUID array is emitted later.
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Print debug messages when Handsfree Audio Agent registers or unregisters
itself.
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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.
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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.
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'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.
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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.
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This patch adds a function to monitor when the AG sends a new codec
before establishing the SCO connection.
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This will be used by the drivers that a given codec was negotiated
for a card.
It will return FALSE if the codec can't be used. For example, if the selected
codec is mSBC and defer setup is not supported by the kernel.
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Before, the AT+BAC command was being sent with fixed information,
now we send the command (that inform the AG of the codecs supported by
the HF) with the codecs supported by the registered Handsfree Audio
Agent.
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This will serve as a collection point for all HFP related definitions.
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Now that we only keep track whether we support wideband speech or not, we
don't have to keep track of the list of codecs supported by the Agent.
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As we can assume that the CVSD codec will be always available, the only
information that we need to export is if we have support for wideband
codecs. Right now only mSBC is defined as wideband.
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In case a property did not appear by the time proxy_added was called
property_changed has to be called if it appear latter otherwise the
application will be unaware of it.
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g_atomic_* end up using G_STATIC_ASSERT, causing gcc 4.8 to yell due to
-Wunused-local-typedefs.
gdbus/client.c: In function ‘g_dbus_client_ref’:
/usr/include/glib-2.0/glib/gmacros.h:162:53: error: typedef ‘_GStaticAssertCompileTimeAssertion_2’ locally defined but not used [-Werror=unused-local-typedefs]
#define G_STATIC_ASSERT(expr) typedef char G_PASTE (_GStaticAssertCompileTimeAssertion_, __COUNTER__)[(expr) ? 1 : -1]
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This patch parses and reads the profile "Version" that comes in the fd
dictionary of the NewConnection method. "Version" is input for Audio Card
registration.
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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.
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SIM is busy right after pin is entered. Use the quirk which
add a CPIN? pooling check until having "CPIN: READY" answer.
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Now each handsfree implementation may be notified that a card wants
its audio to be connected.
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This will be used by HFP plugins to tell the core that a SCO connection
needs to be established.
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This is just the skeleton of a Handsfree Audio Card for the HF side of
HFP 1.6.
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