text: /*************************************************************************************************/
  /*!
   *  \file
   *
   *  \brief  DM Connected Isochronous Stream (CIS) management for slave.
   *
   *  Copyright (c) 2019-2020 Packetcraft, Inc.
   *  
   *  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.
   */
  /*************************************************************************************************/
  
  #include "wsf_types.h"
  #include "wsf_assert.h"
  #include "wsf_msg.h"
  #include "dm_api.h"
  #include "dm_main.h"
  #include "dm_conn.h"
  #include "dm_adv.h"
  #include "dm_cis.h"
  
  /**************************************************************************************************
    Local Functions
  **************************************************************************************************/
  
  static void dmCisSmActRequest(dmCisCcb_t *pCcb, dmCisMsg_t *pMsg);
  static void dmCisSmActAccept(dmCisCcb_t *pCcb, dmCisMsg_t *pMsg);
  static void dmCisSmActReject(dmCisCcb_t *pCcb, dmCisMsg_t *pMsg);
  
  /**************************************************************************************************
    Local Variables
  **************************************************************************************************/
  
  /* Action set for this module */
  static const dmCisAct_t dmCisActSetSlave[] =
  {
    dmCisSmActRequest,
    dmCisSmActAccept,
    dmCisSmActReject
  };
  
  /*************************************************************************************************/
  /*!
   *  \brief  Handle a CIS request event from HCI.
   *
   *  \param  pCcb      CIS connection control block.
   *  \param  pMsg      WSF message.
   *  \param  oldState  Old state.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  static void dmCisSmActRequest(dmCisCcb_t *pCcb, dmCisMsg_t *pMsg)
  {
    /* save CIS and ACL handles */
    pCcb->cisHandle = pMsg->hciLeCisReq.cisHandle;
    pCcb->aclHandle = pMsg->hciLeCisReq.aclHandle;
  
    pMsg->hdr.event = DM_CIS_REQ_IND;
    (*dmCb.cback)((dmEvt_t *) pMsg);
  }
  
  /*************************************************************************************************/
  /*!
   *  \brief  Accept a requested CIS connection.
   *
   *  \param  pCcb      CIS connection control block.
   *  \param  pMsg      WSF message.
   *  \param  oldState  Old state.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  static void dmCisSmActAccept(dmCisCcb_t *pCcb, dmCisMsg_t *pMsg)
  {
    /* if slave */
    if (pCcb->role == DM_ROLE_SLAVE)
    {
      /* accept CIS */
      HciLeAcceptCisReqCmd(pMsg->hdr.param);
    }
    else
    {
      /* deallocate ccb */
      dmCisCcbDealloc(pCcb);
    }
  }
  
  /*************************************************************************************************/
  /*!
   *  \brief  Reject a requested CIS connection.
   *
   *  \param  pCcb      CIS connection control block.
   *  \param  pMsg      WSF message.
   *  \param  oldState  Old state.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  static void dmCisSmActReject(dmCisCcb_t *pCcb, dmCisMsg_t *pMsg)
  {
    /* if slave */
    if (pCcb->role == DM_ROLE_SLAVE)
    {
      /* reject CIS */
      HciLeRejectCisReqCmd(pMsg->hdr.param, pMsg->apiReject.reason);
    }
  
    /* deallocate ccb */
    dmCisCcbDealloc(pCcb);
  }
  
  /*************************************************************************************************/
  /*!
   *  \brief  Inform the Controller to accept the request for the Connected Isochronous Stream (CIS)
   *          that is identified by the connection handle.
   *
   *  \param  handle    Connection handle of the CIS.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  void DmCisAccept(uint16_t handle)
  {
    wsfMsgHdr_t *pMsg;
  
    if ((pMsg = WsfMsgAlloc(sizeof(wsfMsgHdr_t))) != NULL)
    {
      pMsg->event = DM_CIS_MSG_API_ACCEPT;
      pMsg->param = handle;
  
      WsfMsgSend(dmCb.handlerId, pMsg);
    }
  }
  
  /*************************************************************************************************/
  /*!
   *  \brief  Inform the Controller to reject the request for the Connected Isochronous Stream (CIS)
   *          that is identified by the connection handle.
   *
   *  \param  handle    Connection handle of the CIS to be rejected.
   *  \param  reason    Reason the CIS request was rejected.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  void DmCisReject(uint16_t handle, uint8_t reason)
  {
    dmCisApiReject_t *pMsg;
  
    if ((pMsg = WsfMsgAlloc(sizeof(dmCisApiReject_t))) != NULL)
    {
      pMsg->hdr.event = DM_CIS_MSG_API_REJECT;
      pMsg->hdr.param = handle;
      pMsg->hdr.status = pMsg->reason = reason;
  
      WsfMsgSend(dmCb.handlerId, pMsg);
    }
  }
  
  /*************************************************************************************************/
  /*!
   *  \brief  Initialize DM Connected Isochronous Stream (CIS) manager for operation as slave.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  void DmCisSlaveInit(void)
  {
    WsfTaskLock();
  
    dmCisActSet[DM_CIS_ACT_SET_SLAVE] = (dmCisAct_t *) dmCisActSetSlave;
  
    HciSetLeSupFeat(HCI_LE_SUP_FEAT_CIS_SLAVE, TRUE);
  
    WsfTaskUnlock();
  }
  