Add a new struct that provides information to the upper
layer when accepting an connected isochronous stream.
The CIG ID and CIS ID makes it possible for the upper layer
to determine which ISO channels are "together" in a group.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
Add the BT_ISO_SDU_BUF_SIZE which can be used to declare
the TX buffers for ISO, similar to the BT_L2CAP_SDU_BUF_SIZE
macro for L2CAP.
This also updates the ISO samples to use this as well
updating the SDU check to use
CONFIG_BT_ISO_TX_MTU/CONFIG_BT_ISO_RX_MTU without
subtracting the BT_ISO_CHAN_SEND_RESERVE to make the
API more clear.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
The struct was declared twice (once as an opaque type) in
iso.h, but was unneeded. Removed to avoid confusion about
whether it is an opaque type.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
When an ISO channel is disconnect on the central, it is
not deallocated, but merely disconnected. This is because,
as per the HCI spec, the CIS handle lives on in the CIG.
Instead of unref'ing the bt_conn to 0, we simply put the
channel and connection in the disconnected state.
This also fixes a few missing returns for
terminating a CIG.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
Add a sent callback to bt_iso_chan_ops so that the application
can be notified when an SDU has been sent. This can help the
application decide whether to queue up multiple, or only
have a single ISO PDU enqueue for reduced latency.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
The HCI spec defines the BIS index range as starting from
index 0x01. We had previously implemented it such that it
starts from 0x00, and then simply adding 1 to the index
when sending over HCI. However, this may cause issue with
other HCI, or other SIG defined specification, commands
and events, and thus it is probably simpler if we just
use the HCI defined range.
This commit disallows BIT(0) (representing the BIS
index 0x00) to be set, and removes the addition
of 1 when sending over HCI.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
Update the name of the bt_conn pointers to make it clear
whether the connection pointers are ACL or ISO connections.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
The channels list were originally meant to be used
for multiple bt_iso_chan per iso connect (bt_conn), but
that is not the case for the current API, and won't be
going forward, so the use of the list has been removed.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
Update the connected ISO API to be more
similar to the broadcast ISO API as well
as the HCI spec.
This updated API allows for more flexibility
and will better support scenarios such as true
wireless setup, as ISO channels and connections
are more independent now.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
Add the packet status flag value to the iso receive info
struct. This will allow an application to handle potential
lost or erroneous messages.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
The current iso commands in the shell only supports setting up
a bidirectional stream or unidirectional for central role.
Adding rx/tx/rxtx option to iso listen command to allow for
peripheral side configuration of an iso connection.
Signed-off-by: Casper Bonde <casper_bonde@bose.com>
The sequence number is needed in the appliaction layer to detect lost
packets in the ISO stream in cases where the timestamp is not included.
(Sequence number is mandatory to include where timestamp is optional).
The API for the public metadata have been moved to a public header file.
As the size of the ISO meta data exceeds the default 4 octets net_buf
user_data the public ISO metadata have been moved into a seperate array.
The internal metadata is still stored in net_buf user_data.
This also fixed the user_data overflow on 32 bit systems, caused by
writing the ts into user_data on index 4 to 7, which is outside the 4
allocated bytes.
Signed-off-by: Casper Bonde <casper_bonde@bose.com>
Improved the documentation for the ISO data paths, as well
as making the bt_iso_setup_data_path function a bit more
clear.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
This adds a note about buffer ownership and error handling of
bt_iso_chan_send so it is aligned with recent changes.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Channel direction was actually a source of confusion since the spec does
actually define the data path direction from controller point of view
meaning input actually means transmit and output receive, also direction
can be configured with different QoS settings.
To make these APIs less confusing and allow QoS to be configured
independently they are now split into RX (receiving) and TX
(transmission) settings including its data path.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This fixes bt_iso_cleanup when there are still channels bound to the
ACL connection.
On top of it introduce bt_iso_chan_unbind which can be used to unbind
channels and thus release the reference to the ACL connection if that
has not been disconnected in which case the channels are unbind
automatically.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
The SCA (sca) field of bt_iso_chan_qos did not give much
information about the expected values or what they meant,
nor any information about what the value perhaps should be.
Updated the description and the ISO shell.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
Added initial support for BIS (broadcast ISO stream), which
adds support for creating BISes as both broadcaster and receiver,
as well as managing and creating BIGs.
Extends PA sync to handle BIGInfo adveritising reports.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
