This patch implementing avctp.c
New Kconfig BT_AVCTP is provided to enable this layer.
avctp_internal.h shows the APIs for the upper layer, i.e., AVRCP.

Only connection and disconnection interfaces are provided in this patch.

Signed-off-by: Zihao Gao <[email protected]>

This patch implementing avrcp.c
New Kconfig BT_AVRCP is provided to enable this layer.
BT_AVRCP_TARGET and BT_AVRCP_CONTROLLER are then
provided to enable one of the two roles independently.
avrcp.h shows the APIs for the upper layer.

Only connection and disconnection interfaces are provided in this patch.

Signed-off-by: Zihao Gao <[email protected]>

This patch add SDP records for both CT and TG role.

The SDP attribute would be registered according to the configuration.

OBEX and Browsing commands are optional and yet not supported.

SDP registration is implemented at AVRCP level to simplify the
workload of the upper layer. We assume the App can have limited
knowledge on SDP structures.

Signed-off-by: Zihao Gao <[email protected]>

Only the basic functions for establishing an AVCTP connection
are provided at this stage.
An BR/EDR ACL connection is necessary before AVRCP function.
Register callbacks before utilizing AVRCP.

Signed-off-by: Zihao Gao <[email protected]>

This patch defines the message format for general AVCTP.
They would be further called by AVRCP layer.

Signed-off-by: Zihao Gao <[email protected]>

This patch defines the message format for AVCTP unit message.
This is the first out of the four types of commands and can be
used by the CT to obtain the unit info from the TG device.

Signed-off-by: Zihao Gao <[email protected]>

This patch allow to acquire the unit info of the remote device.

Signed-off-by: Zihao Gao <[email protected]>

This patch received an AVCTP message and forward to the
upper layer, e.g., AVRCP.

Signed-off-by: Zihao Gao <[email protected]>

This patch received an AVRCP message and remove timeout timers.

Signed-off-by: Zihao Gao <[email protected]>

The bit order can be incorrect when use bit field definition.

Signed-off-by: Zihao Gao <[email protected]>