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v811_spc009/system/bt/stack/btm/btm_iso_impl.h

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/*
* Copyright 2020 HIMSA II K/S - www.himsa.com.
* Represented by EHIMA - www.ehima.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <map>
#include <memory>
#include <set>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/callback.h"
#include "bt_types.h"
#include "btm_iso_api.h"
#include "btu.h"
#include "common/time_util.h"
#include "device/include/controller.h"
#include "osi/include/log.h"
namespace bluetooth {
namespace hci {
namespace iso_manager {
static constexpr uint8_t kIsoDataInTsBtHdrOffset = 0x0C;
static constexpr uint8_t kIsoHeaderWithTsLen = 12;
static constexpr uint8_t kIsoHeaderWithoutTsLen = 8;
static constexpr uint8_t kStateFlagsNone = 0x00;
static constexpr uint8_t kStateFlagIsConnected = 0x01;
static constexpr uint8_t kStateFlagHasDataPathSet = 0x02;
static constexpr uint8_t kStateFlagIsBroadcast = 0x04;
struct iso_sync_info {
uint32_t first_sync_ts;
uint16_t seq_nb;
};
struct iso_base {
union {
uint8_t cig_id;
uint8_t big_handle;
};
struct iso_sync_info sync_info;
uint8_t state_flags;
uint32_t sdu_itv;
};
typedef iso_base iso_cis;
typedef iso_base iso_bis;
struct iso_impl {
iso_impl() {
iso_credits_ = controller_get_interface()->get_iso_buffer_count();
iso_buffer_size_ = controller_get_interface()->get_iso_data_size();
}
~iso_impl() {}
void handle_register_cis_callbacks(CigCallbacks* callbacks) {
LOG_ASSERT(callbacks != nullptr) << "Invalid CIG callbacks";
cig_callbacks_ = callbacks;
}
void handle_register_big_callbacks(BigCallbacks* callbacks) {
LOG_ASSERT(callbacks != nullptr) << "Invalid BIG callbacks";
big_callbacks_ = callbacks;
}
void on_set_cig_params(uint8_t cig_id, uint32_t sdu_itv_mtos, uint8_t* stream,
uint16_t len) {
uint8_t cis_cnt;
uint16_t conn_handle;
cig_create_cmpl_evt evt;
LOG_ASSERT(cig_callbacks_ != nullptr) << "Invalid CIG callbacks";
LOG_ASSERT(len >= 3) << "Invalid packet length.";
STREAM_TO_UINT8(evt.status, stream);
STREAM_TO_UINT8(evt.cig_id, stream);
STREAM_TO_UINT8(cis_cnt, stream);
uint8_t evt_code = IsCigKnown(cig_id) ? kIsoEventCigOnReconfigureCmpl
: kIsoEventCigOnCreateCmpl;
if (evt.status == HCI_SUCCESS) {
LOG_ASSERT(len >= (3) + (cis_cnt * sizeof(uint16_t)))
<< "Invalid CIS count.";
/* Remove entries for the reconfigured CIG */
if (evt_code == kIsoEventCigOnReconfigureCmpl) {
auto cis_it = conn_hdl_to_cis_map_.cbegin();
while (cis_it != conn_hdl_to_cis_map_.cend()) {
if (cis_it->second->cig_id == evt.cig_id)
cis_it = conn_hdl_to_cis_map_.erase(cis_it);
else
++cis_it;
}
}
evt.conn_handles.reserve(cis_cnt);
for (int i = 0; i < cis_cnt; i++) {
STREAM_TO_UINT16(conn_handle, stream);
evt.conn_handles.push_back(conn_handle);
conn_hdl_to_cis_map_[conn_handle] = std::unique_ptr<iso_cis>(
new iso_cis({.sync_info = {.first_sync_ts = 0, .seq_nb = 0},
.cig_id = cig_id,
.state_flags = kStateFlagsNone,
.sdu_itv = sdu_itv_mtos}));
}
}
cig_callbacks_->OnCigEvent(evt_code, &evt);
}
void create_cig(uint8_t cig_id,
struct iso_manager::cig_create_params cig_params) {
LOG_ASSERT(!IsCigKnown(cig_id)) << "Invalid cig - already exists.";
btsnd_hcic_set_cig_params(
cig_id, cig_params.sdu_itv_mtos, cig_params.sdu_itv_stom,
cig_params.sca, cig_params.packing, cig_params.framing,
cig_params.max_trans_lat_stom, cig_params.max_trans_lat_mtos,
cig_params.cis_cfgs.size(), cig_params.cis_cfgs.data(),
base::BindOnce(&iso_impl::on_set_cig_params, base::Unretained(this),
cig_id, cig_params.sdu_itv_mtos));
}
void reconfigure_cig(uint8_t cig_id,
struct iso_manager::cig_create_params cig_params) {
LOG_ASSERT(IsCigKnown(cig_id)) << "No such cig";
btsnd_hcic_set_cig_params(
cig_id, cig_params.sdu_itv_mtos, cig_params.sdu_itv_stom,
cig_params.sca, cig_params.packing, cig_params.framing,
cig_params.max_trans_lat_stom, cig_params.max_trans_lat_mtos,
cig_params.cis_cfgs.size(), cig_params.cis_cfgs.data(),
base::BindOnce(&iso_impl::on_set_cig_params, base::Unretained(this),
cig_id, cig_params.sdu_itv_mtos));
}
void on_remove_cig(uint8_t* stream, uint16_t len) {
cig_remove_cmpl_evt evt;
LOG_ASSERT(cig_callbacks_ != nullptr) << "Invalid CIG callbacks";
LOG_ASSERT(len == 2) << "Invalid packet length.";
STREAM_TO_UINT8(evt.status, stream);
STREAM_TO_UINT8(evt.cig_id, stream);
if (evt.status == HCI_SUCCESS) {
auto cis_it = conn_hdl_to_cis_map_.cbegin();
while (cis_it != conn_hdl_to_cis_map_.cend()) {
if (cis_it->second->cig_id == evt.cig_id)
cis_it = conn_hdl_to_cis_map_.erase(cis_it);
else
++cis_it;
}
}
cig_callbacks_->OnCigEvent(kIsoEventCigOnRemoveCmpl, &evt);
}
void remove_cig(uint8_t cig_id) {
LOG_ASSERT(IsCigKnown(cig_id)) << "No such cig";
btsnd_hcic_remove_cig(cig_id, base::BindOnce(&iso_impl::on_remove_cig,
base::Unretained(this)));
}
void on_status_establish_cis(
struct iso_manager::cis_establish_params conn_params, uint8_t* stream,
uint16_t len) {
uint8_t status;
LOG_ASSERT(len == 2) << "Invalid packet length: " << len;
STREAM_TO_UINT16(status, stream);
if (status == HCI_SUCCESS) {
/* Wait for connection established event */
return;
}
for (auto cis : conn_params.conn_pairs) {
cis_establish_cmpl_evt evt;
evt.status = status;
evt.cis_conn_hdl = cis.cis_conn_handle;
evt.cig_id = 0xFF;
cig_callbacks_->OnCisEvent(kIsoEventCisEstablishCmpl, &evt);
}
}
void establish_cis(struct iso_manager::cis_establish_params conn_params) {
for (auto& el : conn_params.conn_pairs) {
auto cis = GetCisIfKnown(el.cis_conn_handle);
LOG_ASSERT(cis) << "No such cis";
LOG_ASSERT(!(cis->state_flags & kStateFlagIsConnected))
<< "Already connected";
}
btsnd_hcic_create_cis(conn_params.conn_pairs.size(),
conn_params.conn_pairs.data(),
base::BindOnce(&iso_impl::on_status_establish_cis,
base::Unretained(this), conn_params));
}
void disconnect_cis(uint16_t cis_handle, uint8_t reason) {
auto cis = GetCisIfKnown(cis_handle);
LOG_ASSERT(cis) << "No such cis";
LOG_ASSERT(cis->state_flags & kStateFlagIsConnected) << "Not connected";
bluetooth::legacy::hci::GetInterface().Disconnect(
cis_handle, static_cast<tHCI_STATUS>(reason));
}
void on_setup_iso_data_path(uint8_t* stream, uint16_t len) {
uint8_t status;
uint16_t conn_handle;
STREAM_TO_UINT8(status, stream);
STREAM_TO_UINT16(conn_handle, stream);
iso_base* iso = GetIsoIfKnown(conn_handle);
LOG_ASSERT(iso != nullptr) << "Invalid connection handle: " << +conn_handle;
if (status == HCI_SUCCESS) iso->state_flags |= kStateFlagHasDataPathSet;
if (iso->state_flags & kStateFlagIsBroadcast) {
LOG_ASSERT(big_callbacks_ != nullptr) << "Invalid BIG callbacks";
big_callbacks_->OnSetupIsoDataPath(status, conn_handle, iso->big_handle);
} else {
LOG_ASSERT(cig_callbacks_ != nullptr) << "Invalid CIG callbacks";
cig_callbacks_->OnSetupIsoDataPath(status, conn_handle, iso->cig_id);
}
}
void setup_iso_data_path(
uint16_t conn_handle,
struct iso_manager::iso_data_path_params path_params) {
iso_base* iso = GetIsoIfKnown(conn_handle);
LOG_ASSERT(iso != nullptr) << "No such iso connection: " << +conn_handle;
if (!(iso->state_flags & kStateFlagIsBroadcast)) {
LOG_ASSERT(iso->state_flags & kStateFlagIsConnected)
<< "CIS not established";
}
btsnd_hcic_setup_iso_data_path(
conn_handle, path_params.data_path_dir, path_params.data_path_id,
path_params.codec_id_format, path_params.codec_id_company,
path_params.codec_id_vendor, path_params.controller_delay,
std::move(path_params.codec_conf),
base::BindOnce(&iso_impl::on_setup_iso_data_path,
base::Unretained(this)));
}
void on_remove_iso_data_path(uint8_t* stream, uint16_t len) {
uint8_t status;
uint16_t conn_handle;
if (len < 3) {
LOG(WARNING) << __func__ << "Malformatted packet received";
return;
}
STREAM_TO_UINT8(status, stream);
STREAM_TO_UINT16(conn_handle, stream);
iso_base* iso = GetIsoIfKnown(conn_handle);
LOG_ASSERT(iso != nullptr) << "Invalid connection handle: " << +conn_handle;
if (status == HCI_SUCCESS) iso->state_flags &= ~kStateFlagHasDataPathSet;
if (iso->state_flags & kStateFlagIsBroadcast) {
LOG_ASSERT(big_callbacks_ != nullptr) << "Invalid BIG callbacks";
big_callbacks_->OnRemoveIsoDataPath(status, conn_handle, iso->big_handle);
} else {
LOG_ASSERT(cig_callbacks_ != nullptr) << "Invalid CIG callbacks";
cig_callbacks_->OnRemoveIsoDataPath(status, conn_handle, iso->cig_id);
}
}
void remove_iso_data_path(uint16_t iso_handle, uint8_t data_path_dir) {
iso_base* iso = GetIsoIfKnown(iso_handle);
LOG_ASSERT(iso != nullptr) << "No such iso connection";
LOG_ASSERT((iso->state_flags & kStateFlagHasDataPathSet) ==
kStateFlagHasDataPathSet)
<< "Data path not set";
btsnd_hcic_remove_iso_data_path(
iso_handle, data_path_dir,
base::BindOnce(&iso_impl::on_remove_iso_data_path,
base::Unretained(this)));
}
void on_iso_link_quality_read(uint8_t* stream, uint16_t len) {
uint8_t status;
uint16_t conn_handle;
uint32_t txUnackedPackets;
uint32_t txFlushedPackets;
uint32_t txLastSubeventPackets;
uint32_t retransmittedPackets;
uint32_t crcErrorPackets;
uint32_t rxUnreceivedPackets;
uint32_t duplicatePackets;
// 1 + 2 + 4 * 7
#define ISO_LINK_QUALITY_SIZE 31
if (len < ISO_LINK_QUALITY_SIZE) {
LOG(ERROR) << "Malformated link quality format, len=" << len;
return;
}
STREAM_TO_UINT8(status, stream);
if (status != HCI_SUCCESS) {
LOG(ERROR) << "Failed to Read ISO Link Quality, status: "
<< loghex(status);
return;
}
STREAM_TO_UINT16(conn_handle, stream);
iso_base* iso = GetIsoIfKnown(conn_handle);
LOG_ASSERT(iso != nullptr) << "Invalid connection handle: " << +conn_handle;
STREAM_TO_UINT32(txUnackedPackets, stream);
STREAM_TO_UINT32(txFlushedPackets, stream);
STREAM_TO_UINT32(txLastSubeventPackets, stream);
STREAM_TO_UINT32(retransmittedPackets, stream);
STREAM_TO_UINT32(crcErrorPackets, stream);
STREAM_TO_UINT32(rxUnreceivedPackets, stream);
STREAM_TO_UINT32(duplicatePackets, stream);
LOG_ASSERT(cig_callbacks_ != nullptr) << "Invalid CIG callbacks";
cig_callbacks_->OnIsoLinkQualityRead(
conn_handle, iso->cig_id, txUnackedPackets, txFlushedPackets,
txLastSubeventPackets, retransmittedPackets, crcErrorPackets,
rxUnreceivedPackets, duplicatePackets);
}
void read_iso_link_quality(uint16_t iso_handle) {
iso_base* iso = GetIsoIfKnown(iso_handle);
LOG_ASSERT(iso != nullptr) << "No such iso connection";
btsnd_hcic_read_iso_link_quality(
iso_handle, base::BindOnce(&iso_impl::on_iso_link_quality_read,
base::Unretained(this)));
}
BT_HDR* prepare_ts_hci_packet(uint16_t iso_handle, uint32_t ts,
uint16_t seq_nb, uint16_t data_len) {
/* Add 2 for packet seq., 2 for length, 4 for the timestamp */
uint16_t iso_data_load_len = data_len + 8;
/* Add 2 for handle, 2 for length */
uint16_t iso_full_len = iso_data_load_len + 4;
BT_HDR* packet = (BT_HDR*)osi_malloc(iso_full_len + sizeof(BT_HDR));
packet->len = iso_full_len;
packet->offset = 0;
packet->event = MSG_STACK_TO_HC_HCI_ISO;
packet->layer_specific = 0;
uint8_t* packet_data = packet->data;
UINT16_TO_STREAM(packet_data, iso_handle);
UINT16_TO_STREAM(packet_data, iso_data_load_len);
packet->layer_specific |= BT_ISO_HDR_CONTAINS_TS;
UINT32_TO_STREAM(packet_data, ts);
UINT16_TO_STREAM(packet_data, seq_nb);
UINT16_TO_STREAM(packet_data, data_len);
return packet;
}
void send_iso_data_hci_packet(BT_HDR* packet) {
bte_main_hci_send(packet, MSG_STACK_TO_HC_HCI_ISO | 0x0001);
}
void send_iso_data(uint16_t iso_handle, const uint8_t* data,
uint16_t data_len) {
iso_base* iso = GetIsoIfKnown(iso_handle);
LOG_ASSERT(iso != nullptr)
<< "No such iso connection handle: " << +iso_handle;
if (!(iso->state_flags & kStateFlagIsBroadcast)) {
LOG_ASSERT(iso->state_flags & kStateFlagIsConnected)
<< "CIS not established";
}
LOG_ASSERT(iso->state_flags & kStateFlagHasDataPathSet)
<< "Data path not set for handle: " << +iso_handle;
/* Calculate sequence number for the ISO data packet.
* It should be incremented by 1 every SDU Interval.
*/
uint32_t ts = bluetooth::common::time_get_os_boottime_us();
iso->sync_info.seq_nb = (ts - iso->sync_info.first_sync_ts) / iso->sdu_itv;
if (iso_credits_ == 0 || data_len > iso_buffer_size_) {
LOG(WARNING) << __func__ << ", dropping ISO packet, len: "
<< static_cast<int>(data_len)
<< ", iso credits: " << static_cast<int>(iso_credits_);
return;
}
iso_credits_--;
BT_HDR* packet =
prepare_ts_hci_packet(iso_handle, ts, iso->sync_info.seq_nb, data_len);
memcpy(packet->data + kIsoDataInTsBtHdrOffset, data, data_len);
send_iso_data_hci_packet(packet);
}
void process_cis_est_pkt(uint8_t len, uint8_t* data) {
cis_establish_cmpl_evt evt;
LOG_ASSERT(len == 28) << "Invalid packet length";
LOG_ASSERT(cig_callbacks_ != nullptr) << "Invalid CIG callbacks";
STREAM_TO_UINT8(evt.status, data);
STREAM_TO_UINT16(evt.cis_conn_hdl, data);
auto cis = GetCisIfKnown(evt.cis_conn_hdl);
LOG_ASSERT(cis != nullptr) << "No such cis";
cis->sync_info.first_sync_ts = bluetooth::common::time_get_os_boottime_us();
STREAM_TO_UINT24(evt.cig_sync_delay, data);
STREAM_TO_UINT24(evt.cis_sync_delay, data);
STREAM_TO_UINT24(evt.trans_lat_mtos, data);
STREAM_TO_UINT24(evt.trans_lat_stom, data);
STREAM_TO_UINT8(evt.phy_mtos, data);
STREAM_TO_UINT8(evt.phy_stom, data);
STREAM_TO_UINT8(evt.nse, data);
STREAM_TO_UINT8(evt.bn_mtos, data);
STREAM_TO_UINT8(evt.bn_stom, data);
STREAM_TO_UINT8(evt.ft_mtos, data);
STREAM_TO_UINT8(evt.ft_stom, data);
STREAM_TO_UINT16(evt.max_pdu_mtos, data);
STREAM_TO_UINT16(evt.max_pdu_stom, data);
STREAM_TO_UINT16(evt.iso_itv, data);
if (evt.status == HCI_SUCCESS) cis->state_flags |= kStateFlagIsConnected;
evt.cig_id = cis->cig_id;
cig_callbacks_->OnCisEvent(kIsoEventCisEstablishCmpl, &evt);
}
void disconnection_complete(uint16_t handle, uint8_t reason) {
/* Check if this is an ISO handle */
auto cis = GetCisIfKnown(handle);
if (cis == nullptr) return;
LOG_ASSERT(cig_callbacks_ != nullptr) << "Invalid CIG callbacks";
LOG_INFO("%s flags: %d", __func__, +cis->state_flags);
if (cis->state_flags & kStateFlagIsConnected) {
cis_disconnected_evt evt = {
.reason = reason,
.cis_conn_hdl = handle,
.cig_id = cis->cig_id,
};
cig_callbacks_->OnCisEvent(kIsoEventCisDisconnected, &evt);
cis->state_flags &= ~kStateFlagIsConnected;
/* Data path is considered still valid, but can be reconfigured only once
* CIS is reestablished.
*/
}
}
void handle_num_completed_pkts(uint8_t* p, uint8_t evt_len) {
uint8_t num_handles;
STREAM_TO_UINT8(num_handles, p);
LOG_ASSERT(evt_len == num_handles * 4 + 1);
for (int i = 0; i < num_handles; i++) {
uint16_t handle, num_sent;
STREAM_TO_UINT16(handle, p);
STREAM_TO_UINT16(num_sent, p);
if ((conn_hdl_to_cis_map_.find(handle) == conn_hdl_to_cis_map_.end()) &&
(conn_hdl_to_bis_map_.find(handle) == conn_hdl_to_bis_map_.end()))
continue;
iso_credits_ += num_sent;
}
}
void process_create_big_cmpl_pkt(uint8_t len, uint8_t* data) {
struct big_create_cmpl_evt evt;
LOG_ASSERT(len >= 18) << "Invalid packet length";
LOG_ASSERT(big_callbacks_ != nullptr) << "Invalid BIG callbacks";
STREAM_TO_UINT8(evt.status, data);
STREAM_TO_UINT8(evt.big_id, data);
STREAM_TO_UINT24(evt.big_sync_delay, data);
STREAM_TO_UINT24(evt.transport_latency_big, data);
STREAM_TO_UINT8(evt.phy, data);
STREAM_TO_UINT8(evt.nse, data);
STREAM_TO_UINT8(evt.bn, data);
STREAM_TO_UINT8(evt.pto, data);
STREAM_TO_UINT8(evt.irc, data);
STREAM_TO_UINT16(evt.max_pdu, data);
STREAM_TO_UINT16(evt.iso_interval, data);
uint8_t num_bis;
STREAM_TO_UINT8(num_bis, data);
LOG_ASSERT(num_bis != 0) << "Invalid bis count";
LOG_ASSERT(len == (18 + num_bis * sizeof(uint16_t)))
<< "Invalid packet length";
uint32_t ts = bluetooth::common::time_get_os_boottime_us();
for (auto i = 0; i < num_bis; ++i) {
uint16_t conn_handle;
STREAM_TO_UINT16(conn_handle, data);
evt.conn_handles.push_back(conn_handle);
LOG_INFO(" received BIS conn_hdl %d", +conn_handle);
if (evt.status == HCI_SUCCESS) {
conn_hdl_to_bis_map_[conn_handle] = std::unique_ptr<iso_bis>(
new iso_bis({.sync_info = {.first_sync_ts = ts, .seq_nb = 0},
.big_handle = evt.big_id,
.state_flags = kStateFlagIsBroadcast,
.sdu_itv = last_big_create_req_sdu_itv_}));
}
}
big_callbacks_->OnBigEvent(kIsoEventBigOnCreateCmpl, &evt);
}
void process_terminate_big_cmpl_pkt(uint8_t len, uint8_t* data) {
struct big_terminate_cmpl_evt evt;
LOG_ASSERT(len == 2) << "Invalid packet length";
LOG_ASSERT(big_callbacks_ != nullptr) << "Invalid BIG callbacks";
STREAM_TO_UINT8(evt.big_id, data);
STREAM_TO_UINT8(evt.reason, data);
bool is_known_handle = false;
auto bis_it = conn_hdl_to_bis_map_.cbegin();
while (bis_it != conn_hdl_to_bis_map_.cend()) {
if (bis_it->second->big_handle == evt.big_id) {
bis_it = conn_hdl_to_bis_map_.erase(bis_it);
is_known_handle = true;
} else {
++bis_it;
}
}
LOG_ASSERT(is_known_handle) << "No such big";
big_callbacks_->OnBigEvent(kIsoEventBigOnTerminateCmpl, &evt);
}
void create_big(uint8_t big_id, struct big_create_params big_params) {
LOG_ASSERT(!IsBigKnown(big_id)) << "Invalid big - already exists";
last_big_create_req_sdu_itv_ = big_params.sdu_itv;
btsnd_hcic_create_big(
big_id, big_params.adv_handle, big_params.num_bis, big_params.sdu_itv,
big_params.max_sdu_size, big_params.max_transport_latency,
big_params.rtn, big_params.phy, big_params.packing, big_params.framing,
big_params.enc, big_params.enc_code);
}
void terminate_big(uint8_t big_id, uint8_t reason) {
LOG_ASSERT(IsBigKnown(big_id)) << "No such big";
btsnd_hcic_term_big(big_id, reason);
}
void on_iso_event(uint8_t code, uint8_t* packet, uint16_t packet_len) {
switch (code) {
case HCI_BLE_CIS_EST_EVT:
process_cis_est_pkt(packet_len, packet);
break;
case HCI_BLE_CREATE_BIG_CPL_EVT:
process_create_big_cmpl_pkt(packet_len, packet);
break;
case HCI_BLE_TERM_BIG_CPL_EVT:
process_terminate_big_cmpl_pkt(packet_len, packet);
break;
case HCI_BLE_CIS_REQ_EVT:
/* Not supported */
break;
case HCI_BLE_BIG_SYNC_EST_EVT:
/* Not supported */
break;
case HCI_BLE_BIG_SYNC_LOST_EVT:
/* Not supported */
break;
default:
LOG_ERROR("Unhandled event code %d", +code);
}
}
void handle_iso_data(BT_HDR* p_msg) {
const uint8_t* stream = p_msg->data;
cis_data_evt evt;
uint16_t handle, seq_nb;
if (p_msg->len <= ((p_msg->layer_specific & BT_ISO_HDR_CONTAINS_TS)
? kIsoHeaderWithTsLen
: kIsoHeaderWithoutTsLen))
return;
LOG_ASSERT(cig_callbacks_ != nullptr) << "Invalid CIG callbacks";
STREAM_TO_UINT16(handle, stream);
evt.cis_conn_hdl = HCID_GET_HANDLE(handle);
iso_base* iso = GetCisIfKnown(evt.cis_conn_hdl);
if (iso == nullptr) {
LOG(ERROR) << __func__ << ", received data for the non-registered CIS!";
return;
}
STREAM_SKIP_UINT16(stream);
if (p_msg->layer_specific & BT_ISO_HDR_CONTAINS_TS)
STREAM_TO_UINT32(evt.ts, stream);
STREAM_TO_UINT16(seq_nb, stream);
uint32_t ts = bluetooth::common::time_get_os_boottime_us();
uint32_t new_calc_seq_nb =
(ts - iso->sync_info.first_sync_ts) / iso->sdu_itv;
if (new_calc_seq_nb <= iso->sync_info.seq_nb)
new_calc_seq_nb = iso->sync_info.seq_nb + 1;
if (iso->sync_info.seq_nb == 0) {
evt.evt_lost = 0;
} else {
evt.evt_lost = new_calc_seq_nb - iso->sync_info.seq_nb - 1;
if (evt.evt_lost > 0) {
LOG(WARNING) << evt.evt_lost << " packets possibly lost.";
}
if (new_calc_seq_nb != seq_nb) {
LOG(WARNING) << "Sequence number mismatch. "
"Adjusting own time reference point.";
iso->sync_info.first_sync_ts = ts - (seq_nb * iso->sdu_itv);
new_calc_seq_nb = seq_nb;
}
}
iso->sync_info.seq_nb = new_calc_seq_nb;
evt.p_msg = p_msg;
evt.cig_id = iso->cig_id;
cig_callbacks_->OnCisEvent(kIsoEventCisDataAvailable, &evt);
}
iso_cis* GetCisIfKnown(uint16_t cis_conn_handle) {
auto cis_it = conn_hdl_to_cis_map_.find(cis_conn_handle);
return (cis_it != conn_hdl_to_cis_map_.end()) ? cis_it->second.get()
: nullptr;
}
iso_bis* GetBisIfKnown(uint16_t bis_conn_handle) {
auto bis_it = conn_hdl_to_bis_map_.find(bis_conn_handle);
return (bis_it != conn_hdl_to_bis_map_.end()) ? bis_it->second.get()
: nullptr;
}
iso_base* GetIsoIfKnown(uint16_t iso_handle) {
struct iso_base* iso = GetCisIfKnown(iso_handle);
return (iso != nullptr) ? iso : GetBisIfKnown(iso_handle);
}
bool IsCigKnown(uint8_t cig_id) const {
auto const cis_it =
std::find_if(conn_hdl_to_cis_map_.cbegin(), conn_hdl_to_cis_map_.cend(),
[&cig_id](auto& kv_pair) {
return (kv_pair.second->cig_id == cig_id);
});
return (cis_it != conn_hdl_to_cis_map_.cend());
}
bool IsBigKnown(uint8_t big_id) const {
auto bis_it =
std::find_if(conn_hdl_to_bis_map_.cbegin(), conn_hdl_to_bis_map_.cend(),
[&big_id](auto& kv_pair) {
return (kv_pair.second->big_handle == big_id);
});
return (bis_it != conn_hdl_to_bis_map_.cend());
}
std::map<uint16_t, std::unique_ptr<iso_cis>> conn_hdl_to_cis_map_;
std::map<uint16_t, std::unique_ptr<iso_bis>> conn_hdl_to_bis_map_;
uint16_t iso_credits_;
uint16_t iso_buffer_size_;
uint32_t last_big_create_req_sdu_itv_;
CigCallbacks* cig_callbacks_ = nullptr;
BigCallbacks* big_callbacks_ = nullptr;
};
} // namespace iso_manager
} // namespace hci
} // namespace bluetooth
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