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3163523575
Some phones with HFP Audio Gateway version previous to 1.5 (e.g.
Samsung SGH-D600 returning 0x0101 as profile version) do not accept an
AT+BRSF with latest features. The Handsfree agent should adapt its
AT+BRSF command depending on the remote version, so add version
information as parameter of NewConnection method.
Here is traces of buggy exchange:
< ACL data: handle 12 flags 0x02 dlen 20
L2CAP(d): cid 0x0046 len 16 [psm 3]
RFCOMM(d): UIH: cr 1 dlci 10 pf 0 ilen 12 fcs 0xb0
0000: 41 54 2b 42 52 53 46 3d 31 31 38 0d AT+BRSF=118.
> ACL data: handle 12 flags 0x02 dlen 18
L2CAP(d): cid 0x0041 len 14 [psm 3]
RFCOMM(d): UIH: cr 0 dlci 10 pf 1 ilen 9 fcs 0x76 credits 1
0000: 0d 0a 45 52 52 4f 52 0d 0a ..ERROR..
< ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0046 len 4 [psm 3]
RFCOMM(s): DISC: cr 1 dlci 10 pf 1 ilen 0 fcs 0x6d
and after the fix (and corresponding fix in oFono):
< ACL data: handle 12 flags 0x02 dlen 19
L2CAP(d): cid 0x0048 len 15 [psm 3]
RFCOMM(d): UIH: cr 1 dlci 10 pf 0 ilen 11 fcs 0xb0
0000: 41 54 2b 42 52 53 46 3d 32 32 0d AT+BRSF=22.
> ACL data: handle 12 flags 0x02 dlen 28
L2CAP(d): cid 0x0041 len 24 [psm 3]
RFCOMM(d): UIH: cr 0 dlci 10 pf 1 ilen 19 fcs 0x76 credits 1
0000: 0d 0a 2b 42 52 53 46 3a 20 33 33 0d 0a 0d 0a 4f ..+BRSF: 33....O
0010: 4b 0d 0a K..
< ACL data: handle 12 flags 0x02 dlen 18
L2CAP(d): cid 0x0048 len 14 [psm 3]
RFCOMM(d): UIH: cr 1 dlci 10 pf 0 ilen 10 fcs 0xb0
0000: 41 54 2b 43 49 4e 44 3d 3f 0d AT+CIND=?.
87 lines
2.4 KiB
Plaintext
87 lines
2.4 KiB
Plaintext
Gateway hierarchy
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Service org.bluez
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Interface org.bluez.HandsfreeGateway
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Object path [variable prefix]/{hci0,hci1,...}/dev_XX_XX_XX_XX_XX_XX
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This interface is available for remote devices which can function in the Audio
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Gateway role of the HFP profiles. It is intended to be used with external
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telephony stacks / handlers of the HFP protocol.
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Methods void Connect()
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Connect to the AG service on the remote device.
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void Disconnect()
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Disconnect from the AG service on the remote device
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dict GetProperties()
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Returns all properties for the interface. See the
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properties section for available properties.
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void RegisterAgent(object path)
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The object path defines the path the of the agent
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that will be called when a new Handsfree connection
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is established.
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If an application disconnects from the bus all of its
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registered agents will be removed.
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void UnregisterAgent(object path)
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This unregisters the agent that has been previously
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registered. The object path parameter must match the
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same value that has been used on registration.
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Possible Errors: org.bluez.Error.Failed
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org.bluez.Error.InvalidArguments
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Signals PropertyChanged(string name, variant value)
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This signal indicates a changed value of the given
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property.
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Properties string State [readonly]
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Indicates the state of the connection. Possible
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values are:
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"disconnected"
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"connecting"
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"connected"
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"playing"
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HandsfreeAgent hierarchy
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===============
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Service unique name
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Interface org.bluez.HandsfreeAgent
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Object path freely definable
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Methods void NewConnection(filedescriptor fd, uint16 version)
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This method gets called whenever a new handsfree
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connection has been established. The objectpath
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contains the object path of the remote device. This
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method assumes that DBus daemon with file descriptor
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passing capability is being used.
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The agent should only return successfully once the
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establishment of the service level connection (SLC)
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has been completed. In the case of Handsfree this
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means that BRSF exchange has been performed and
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necessary initialization has been done.
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Possible Errors: org.bluez.Error.InvalidArguments
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org.bluez.Error.Failed
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void Release()
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This method gets called whenever the service daemon
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unregisters the agent or whenever the Adapter where
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the HandsfreeAgent registers itself is removed.
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