text: /******************************************************************************
   *
   *  Copyright (C) 2002-2012 Broadcom Corporation
   *
   *  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.
   *
   ******************************************************************************/
  
  /******************************************************************************
   *
   *  This module contains the stream control block and functions which
   *  operate on the stream control block.
   *
   ******************************************************************************/
  
  #include <string.h>
  #include "bt_types.h"
  #include "bt_target.h"
  #include "bt_defs.h"
  #include "avdt_api.h"
  #include "avdtc_api.h"
  #include "avdt_int.h"
  #include "btu.h"
  #include "allocator.h"
  #include "fixed_queue.h"
  
  #if (defined(AVDT_INCLUDED) && AVDT_INCLUDED == TRUE)
  
  /*****************************************************************************
  ** state machine constants and types
  *****************************************************************************/
  #if AVDT_DEBUG == TRUE
  
  /* verbose state strings for trace */
  const char *const avdt_scb_st_str[] = {
      "SCB_IDLE_ST",
      "SCB_CONF_ST",
      "SCB_OPENING_ST",
      "SCB_OPEN_ST",
      "SCB_STREAM_ST",
      "SCB_CLOSING_ST"
  };
  
  /* verbose event strings for trace */
  const char *const avdt_scb_evt_str[] = {
      "API_REMOVE_EVT",
      "API_WRITE_REQ_EVT",
      "API_GETCONFIG_REQ_EVT",
      "API_DELAY_RPT_REQ",
      "API_SETCONFIG_REQ_EVT",
      "API_OPEN_REQ_EVT",
      "API_CLOSE_REQ_EVT",
      "API_RECONFIG_REQ_EVT",
      "API_SECURITY_REQ_EVT",
      "API_ABORT_REQ_EVT",
      "API_GETCONFIG_RSP_EVT",
      "API_SETCONFIG_RSP_EVT",
      "API_SETCONFIG_REJ_EVT",
      "API_OPEN_RSP_EVT",
      "API_CLOSE_RSP_EVT",
      "API_RECONFIG_RSP_EVT",
      "API_SECURITY_RSP_EVT",
      "API_ABORT_RSP_EVT",
      "MSG_SETCONFIG_CMD_EVT",
      "MSG_GETCONFIG_CMD_EVT",
      "MSG_OPEN_CMD_EVT",
      "MSG_START_CMD_EVT",
      "MSG_SUSPEND_CMD_EVT",
      "MSG_CLOSE_CMD_EVT",
      "MSG_ABORT_CMD_EVT",
      "MSG_RECONFIG_CMD_EVT",
      "MSG_SECURITY_CMD_EVT",
      "MSG_DELAY_RPT_CMD_EVT",
      "MSG_DELAY_RPT_RSP_EVT",
      "MSG_SETCONFIG_RSP_EVT",
      "MSG_GETCONFIG_RSP_EVT",
      "MSG_OPEN_RSP_EVT",
      "MSG_START_RSP_EVT",
      "MSG_SUSPEND_RSP_EVT",
      "MSG_CLOSE_RSP_EVT",
      "MSG_ABORT_RSP_EVT",
      "MSG_RECONFIG_RSP_EVT",
      "MSG_SECURITY_RSP_EVT",
      "MSG_SETCONFIG_REJ_EVT",
      "MSG_OPEN_REJ_EVT",
      "MSG_START_REJ_EVT",
      "MSG_SUSPEND_REJ_EVT",
      "TC_TOUT_EVT",
      "TC_OPEN_EVT",
      "TC_CLOSE_EVT",
      "TC_CONG_EVT",
      "TC_DATA_EVT",
      "CC_CLOSE_EVT"
  };
  
  #endif
  
  
  /* action function list */
  const tAVDT_SCB_ACTION avdt_scb_action[] = {
      avdt_scb_hdl_abort_cmd,
      avdt_scb_hdl_abort_rsp,
      avdt_scb_hdl_close_cmd,
      avdt_scb_hdl_close_rsp,
      avdt_scb_hdl_getconfig_cmd,
      avdt_scb_hdl_getconfig_rsp,
      avdt_scb_hdl_open_cmd,
      avdt_scb_hdl_open_rej,
      avdt_scb_hdl_open_rsp,
      avdt_scb_hdl_pkt,
      avdt_scb_drop_pkt,
      avdt_scb_hdl_reconfig_cmd,
      avdt_scb_hdl_reconfig_rsp,
      avdt_scb_hdl_security_cmd,
      avdt_scb_hdl_security_rsp,
      avdt_scb_hdl_setconfig_cmd,
      avdt_scb_hdl_setconfig_rej,
      avdt_scb_hdl_setconfig_rsp,
      avdt_scb_hdl_start_cmd,
      avdt_scb_hdl_start_rsp,
      avdt_scb_hdl_suspend_cmd,
      avdt_scb_hdl_suspend_rsp,
      avdt_scb_hdl_tc_close,
  #if AVDT_REPORTING == TRUE
      avdt_scb_hdl_tc_close_sto,
  #endif
      avdt_scb_hdl_tc_open,
  #if AVDT_REPORTING == TRUE
      avdt_scb_hdl_tc_open_sto,
  #endif
      avdt_scb_snd_delay_rpt_req,
      avdt_scb_hdl_delay_rpt_cmd,
      avdt_scb_hdl_delay_rpt_rsp,
      avdt_scb_hdl_write_req,
      avdt_scb_snd_abort_req,
      avdt_scb_snd_abort_rsp,
      avdt_scb_snd_close_req,
      avdt_scb_snd_stream_close,
      avdt_scb_snd_close_rsp,
      avdt_scb_snd_getconfig_req,
      avdt_scb_snd_getconfig_rsp,
      avdt_scb_snd_open_req,
      avdt_scb_snd_open_rsp,
      avdt_scb_snd_reconfig_req,
      avdt_scb_snd_reconfig_rsp,
      avdt_scb_snd_security_req,
      avdt_scb_snd_security_rsp,
      avdt_scb_snd_setconfig_req,
      avdt_scb_snd_setconfig_rej,
      avdt_scb_snd_setconfig_rsp,
      avdt_scb_snd_tc_close,
      avdt_scb_cb_err,
      avdt_scb_cong_state,
      avdt_scb_rej_state,
      avdt_scb_rej_in_use,
      avdt_scb_rej_not_in_use,
      avdt_scb_set_remove,
      avdt_scb_free_pkt,
      avdt_scb_clr_pkt,
      avdt_scb_chk_snd_pkt,
      avdt_scb_tc_timer,
      avdt_scb_clr_vars,
      avdt_scb_dealloc
  };
  
  /* state table information */
  #define AVDT_SCB_ACTIONS            2       /* number of actions */
  #define AVDT_SCB_NEXT_STATE         2       /* position of next state */
  #define AVDT_SCB_NUM_COLS           3       /* number of columns in state tables */
  
  /* state table for idle state */
  const UINT8 avdt_scb_st_idle[][AVDT_SCB_NUM_COLS] = {
      /* Event                     Action 1                       Action 2                    Next state */
      /* API_REMOVE_EVT */        {AVDT_SCB_DEALLOC,              AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_WRITE_REQ_EVT */     {AVDT_SCB_FREE_PKT,             AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_GETCONFIG_REQ_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_DELAY_RPT_REQ_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_SETCONFIG_REQ_EVT */ {AVDT_SCB_SND_SETCONFIG_REQ,    AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_OPEN_REQ_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_CLOSE_REQ_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_RECONFIG_REQ_EVT */  {AVDT_SCB_CB_ERR,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_SECURITY_REQ_EVT */  {AVDT_SCB_CB_ERR,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_ABORT_REQ_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_GETCONFIG_RSP_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_SETCONFIG_RSP_EVT */ {AVDT_SCB_SND_SETCONFIG_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_SETCONFIG_REJ_EVT */ {AVDT_SCB_SND_SETCONFIG_REJ,    AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_OPEN_RSP_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_CLOSE_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_RECONFIG_RSP_EVT */  {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_SECURITY_RSP_EVT */  {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* API_ABORT_RSP_EVT */     {AVDT_SCB_SND_ABORT_RSP,        AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_SETCONFIG_CMD_EVT */ {AVDT_SCB_HDL_SETCONFIG_CMD,    AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_GETCONFIG_CMD_EVT */ {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_OPEN_CMD_EVT */      {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_START_CMD_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_SUSPEND_CMD_EVT */   {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_CLOSE_CMD_EVT */     {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_ABORT_CMD_EVT */     {AVDT_SCB_HDL_ABORT_CMD,        AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_RECONFIG_CMD_EVT */  {AVDT_SCB_REJ_NOT_IN_USE,       AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_SECURITY_CMD_EVT */  {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_DELAY_RPT_CMD_EVT */ {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_DELAY_RPT_RSP_EVT */ {AVDT_SCB_HDL_DELAY_RPT_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_SETCONFIG_RSP_EVT */ {AVDT_SCB_HDL_SETCONFIG_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_GETCONFIG_RSP_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_OPEN_RSP_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_START_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_SUSPEND_RSP_EVT */   {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_CLOSE_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_ABORT_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_RECONFIG_RSP_EVT */  {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_SECURITY_RSP_EVT */  {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_SETCONFIG_REJ_EVT */ {AVDT_SCB_HDL_SETCONFIG_REJ,    AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_OPEN_REJ_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_START_REJ_EVT */     {AVDT_SCB_HDL_START_RSP,        AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_SUSPEND_REJ_EVT */   {AVDT_SCB_HDL_SUSPEND_RSP,      AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* TC_TOUT_EVT */           {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* TC_OPEN_EVT */           {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* TC_CLOSE_EVT */          {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* TC_CONG_EVT */           {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* TC_DATA_EVT */           {AVDT_SCB_DROP_PKT,             AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* CC_CLOSE_EVT */          {AVDT_SCB_CLR_VARS,             AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST}
  };
  
  /* state table for configured state */
  const UINT8 avdt_scb_st_conf[][AVDT_SCB_NUM_COLS] = {
      /* Event                     Action 1                       Action 2                    Next state */
      /* API_REMOVE_EVT */        {AVDT_SCB_SND_ABORT_REQ,        AVDT_SCB_SET_REMOVE,        AVDT_SCB_CONF_ST},
      /* API_WRITE_REQ_EVT */     {AVDT_SCB_FREE_PKT,             AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_GETCONFIG_REQ_EVT */ {AVDT_SCB_SND_GETCONFIG_REQ,    AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_DELAY_RPT_REQ_EVT */ {AVDT_SCB_SND_DELAY_RPT_REQ,    AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_SETCONFIG_REQ_EVT */ {AVDT_SCB_CB_ERR,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_OPEN_REQ_EVT */      {AVDT_SCB_SND_OPEN_REQ,         AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_CLOSE_REQ_EVT */     {AVDT_SCB_SND_ABORT_REQ,        AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_RECONFIG_REQ_EVT */  {AVDT_SCB_CB_ERR,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_SECURITY_REQ_EVT */  {AVDT_SCB_SND_SECURITY_REQ,     AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_ABORT_REQ_EVT */     {AVDT_SCB_SND_ABORT_REQ,        AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_GETCONFIG_RSP_EVT */ {AVDT_SCB_SND_GETCONFIG_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_SETCONFIG_RSP_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_SETCONFIG_REJ_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_OPEN_RSP_EVT */      {AVDT_SCB_SND_OPEN_RSP,         AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* API_CLOSE_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_RECONFIG_RSP_EVT */  {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_SECURITY_RSP_EVT */  {AVDT_SCB_SND_SECURITY_RSP,     AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* API_ABORT_RSP_EVT */     {AVDT_SCB_SND_ABORT_RSP,        AVDT_SCB_HDL_TC_CLOSE,      AVDT_SCB_IDLE_ST},
      /* MSG_SETCONFIG_CMD_EVT */ {AVDT_SCB_REJ_IN_USE,           AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_GETCONFIG_CMD_EVT */ {AVDT_SCB_HDL_GETCONFIG_CMD,    AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_OPEN_CMD_EVT */      {AVDT_SCB_HDL_OPEN_CMD,         AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_START_CMD_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_SUSPEND_CMD_EVT */   {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_CLOSE_CMD_EVT */     {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_ABORT_CMD_EVT */     {AVDT_SCB_HDL_ABORT_CMD,        AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_RECONFIG_CMD_EVT */  {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_SECURITY_CMD_EVT */  {AVDT_SCB_HDL_SECURITY_CMD,     AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_DELAY_RPT_CMD_EVT */ {AVDT_SCB_HDL_DELAY_RPT_CMD,    AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_DELAY_RPT_RSP_EVT */ {AVDT_SCB_HDL_DELAY_RPT_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_SETCONFIG_RSP_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_GETCONFIG_RSP_EVT */ {AVDT_SCB_HDL_GETCONFIG_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_OPEN_RSP_EVT */      {AVDT_SCB_HDL_OPEN_RSP,         AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_START_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_SUSPEND_RSP_EVT */   {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_CLOSE_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_ABORT_RSP_EVT */     {AVDT_SCB_HDL_ABORT_RSP,        AVDT_SCB_HDL_TC_CLOSE,      AVDT_SCB_IDLE_ST},
      /* MSG_RECONFIG_RSP_EVT */  {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_SECURITY_RSP_EVT */  {AVDT_SCB_HDL_SECURITY_RSP,     AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_SETCONFIG_REJ_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_OPEN_REJ_EVT */      {AVDT_SCB_HDL_OPEN_REJ,         AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_START_REJ_EVT */     {AVDT_SCB_HDL_START_RSP,        AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* MSG_SUSPEND_REJ_EVT */   {AVDT_SCB_HDL_SUSPEND_RSP,      AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* TC_TOUT_EVT */           {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* TC_OPEN_EVT */           {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* TC_CLOSE_EVT */          {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* TC_CONG_EVT */           {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* TC_DATA_EVT */           {AVDT_SCB_DROP_PKT,             AVDT_SCB_IGNORE,            AVDT_SCB_CONF_ST},
      /* CC_CLOSE_EVT */          {AVDT_SCB_HDL_TC_CLOSE,         AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST}
  };
  
  /* state table for opening state */
  const UINT8 avdt_scb_st_opening[][AVDT_SCB_NUM_COLS] = {
      /* Event                     Action 1                       Action 2                    Next state */
      /* API_REMOVE_EVT */        {AVDT_SCB_SND_CLOSE_REQ,        AVDT_SCB_SET_REMOVE,        AVDT_SCB_CLOSING_ST},
      /* API_WRITE_REQ_EVT */     {AVDT_SCB_FREE_PKT,             AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* API_GETCONFIG_REQ_EVT */ {AVDT_SCB_SND_GETCONFIG_REQ,    AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* API_DELAY_RPT_REQ_EVT */ {AVDT_SCB_SND_DELAY_RPT_REQ,    AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* API_SETCONFIG_REQ_EVT */ {AVDT_SCB_CB_ERR,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* API_OPEN_REQ_EVT */      {AVDT_SCB_CB_ERR,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* API_CLOSE_REQ_EVT */     {AVDT_SCB_SND_CLOSE_REQ,        AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_RECONFIG_REQ_EVT */  {AVDT_SCB_CB_ERR,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* API_SECURITY_REQ_EVT */  {AVDT_SCB_SND_SECURITY_REQ,     AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* API_ABORT_REQ_EVT */     {AVDT_SCB_SND_ABORT_REQ,        AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_GETCONFIG_RSP_EVT */ {AVDT_SCB_SND_GETCONFIG_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* API_SETCONFIG_RSP_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* API_SETCONFIG_REJ_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* API_OPEN_RSP_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* API_CLOSE_RSP_EVT */     {AVDT_SCB_SND_CLOSE_RSP,        AVDT_SCB_SND_TC_CLOSE,      AVDT_SCB_CLOSING_ST},
      /* API_RECONFIG_RSP_EVT */  {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* API_SECURITY_RSP_EVT */  {AVDT_SCB_SND_SECURITY_RSP,     AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* API_ABORT_RSP_EVT */     {AVDT_SCB_SND_ABORT_RSP,        AVDT_SCB_SND_TC_CLOSE,      AVDT_SCB_CLOSING_ST},
      /* MSG_SETCONFIG_CMD_EVT */ {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_GETCONFIG_CMD_EVT */ {AVDT_SCB_HDL_GETCONFIG_CMD,    AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_OPEN_CMD_EVT */      {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_START_CMD_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_SUSPEND_CMD_EVT */   {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_CLOSE_CMD_EVT */     {AVDT_SCB_HDL_CLOSE_CMD,        AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_ABORT_CMD_EVT */     {AVDT_SCB_HDL_ABORT_CMD,        AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_RECONFIG_CMD_EVT */  {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_SECURITY_CMD_EVT */  {AVDT_SCB_HDL_SECURITY_CMD,     AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_DELAY_RPT_CMD_EVT */ {AVDT_SCB_HDL_DELAY_RPT_CMD,    AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_DELAY_RPT_RSP_EVT */ {AVDT_SCB_HDL_DELAY_RPT_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_SETCONFIG_RSP_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_GETCONFIG_RSP_EVT */ {AVDT_SCB_HDL_GETCONFIG_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_OPEN_RSP_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_START_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_SUSPEND_RSP_EVT */   {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_CLOSE_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_ABORT_RSP_EVT */     {AVDT_SCB_SND_TC_CLOSE,         AVDT_SCB_HDL_ABORT_RSP,     AVDT_SCB_CLOSING_ST},
      /* MSG_RECONFIG_RSP_EVT */  {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_SECURITY_RSP_EVT */  {AVDT_SCB_HDL_SECURITY_RSP,     AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_SETCONFIG_REJ_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_OPEN_REJ_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_START_REJ_EVT */     {AVDT_SCB_HDL_START_RSP,        AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* MSG_SUSPEND_REJ_EVT */   {AVDT_SCB_HDL_SUSPEND_RSP,      AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* TC_TOUT_EVT */           {AVDT_SCB_SND_ABORT_REQ,        AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* TC_OPEN_EVT */           {AVDT_SCB_HDL_TC_OPEN,          AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* TC_CLOSE_EVT */          {AVDT_SCB_HDL_TC_CLOSE,         AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* TC_CONG_EVT */           {AVDT_SCB_CONG_STATE,           AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* TC_DATA_EVT */           {AVDT_SCB_DROP_PKT,             AVDT_SCB_IGNORE,            AVDT_SCB_OPENING_ST},
      /* CC_CLOSE_EVT */          {AVDT_SCB_SND_TC_CLOSE,         AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST}
  };
  
  /* state table for open state */
  const UINT8 avdt_scb_st_open[][AVDT_SCB_NUM_COLS] = {
      /* Event                     Action 1                       Action 2                    Next state */
      /* API_REMOVE_EVT */        {AVDT_SCB_SND_CLOSE_REQ,        AVDT_SCB_SET_REMOVE,        AVDT_SCB_CLOSING_ST},
      /* API_WRITE_REQ_EVT */     {AVDT_SCB_FREE_PKT,             AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* API_GETCONFIG_REQ_EVT */ {AVDT_SCB_SND_GETCONFIG_REQ,    AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* API_DELAY_RPT_REQ_EVT */ {AVDT_SCB_SND_DELAY_RPT_REQ,    AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* API_SETCONFIG_REQ_EVT */ {AVDT_SCB_CB_ERR,               AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* API_OPEN_REQ_EVT */      {AVDT_SCB_CB_ERR,               AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* API_CLOSE_REQ_EVT */     {AVDT_SCB_SND_CLOSE_REQ,        AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_RECONFIG_REQ_EVT */  {AVDT_SCB_SND_RECONFIG_REQ,     AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* API_SECURITY_REQ_EVT */  {AVDT_SCB_SND_SECURITY_REQ,     AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* API_ABORT_REQ_EVT */     {AVDT_SCB_SND_ABORT_REQ,        AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_GETCONFIG_RSP_EVT */ {AVDT_SCB_SND_GETCONFIG_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* API_SETCONFIG_RSP_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* API_SETCONFIG_REJ_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* API_OPEN_RSP_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* API_CLOSE_RSP_EVT */     {AVDT_SCB_SND_CLOSE_RSP,        AVDT_SCB_TC_TIMER,          AVDT_SCB_CLOSING_ST},
      /* API_RECONFIG_RSP_EVT */  {AVDT_SCB_SND_RECONFIG_RSP,     AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* API_SECURITY_RSP_EVT */  {AVDT_SCB_SND_SECURITY_RSP,     AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* API_ABORT_RSP_EVT */     {AVDT_SCB_SND_ABORT_RSP,        AVDT_SCB_TC_TIMER,          AVDT_SCB_CLOSING_ST},
      /* MSG_SETCONFIG_CMD_EVT */ {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_GETCONFIG_CMD_EVT */ {AVDT_SCB_HDL_GETCONFIG_CMD,    AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_OPEN_CMD_EVT */      {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_START_CMD_EVT */     {AVDT_SCB_HDL_START_CMD,        AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_SUSPEND_CMD_EVT */   {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_CLOSE_CMD_EVT */     {AVDT_SCB_HDL_CLOSE_CMD,        AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_ABORT_CMD_EVT */     {AVDT_SCB_HDL_ABORT_CMD,        AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_RECONFIG_CMD_EVT */  {AVDT_SCB_HDL_RECONFIG_CMD,     AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_SECURITY_CMD_EVT */  {AVDT_SCB_HDL_SECURITY_CMD,     AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_DELAY_RPT_CMD_EVT */ {AVDT_SCB_HDL_DELAY_RPT_CMD,    AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_DELAY_RPT_RSP_EVT */ {AVDT_SCB_HDL_DELAY_RPT_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_SETCONFIG_RSP_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_GETCONFIG_RSP_EVT */ {AVDT_SCB_HDL_GETCONFIG_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_OPEN_RSP_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_START_RSP_EVT */     {AVDT_SCB_HDL_START_RSP,        AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_SUSPEND_RSP_EVT */   {AVDT_SCB_HDL_SUSPEND_RSP,      AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_CLOSE_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_ABORT_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* MSG_RECONFIG_RSP_EVT */  {AVDT_SCB_HDL_RECONFIG_RSP,     AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_SECURITY_RSP_EVT */  {AVDT_SCB_HDL_SECURITY_RSP,     AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_SETCONFIG_REJ_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_OPEN_REJ_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_START_REJ_EVT */     {AVDT_SCB_HDL_START_RSP,        AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* MSG_SUSPEND_REJ_EVT */   {AVDT_SCB_HDL_SUSPEND_RSP,      AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* TC_TOUT_EVT */           {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
  #if AVDT_REPORTING == TRUE
      /* TC_OPEN_EVT */           {AVDT_SCB_HDL_TC_OPEN_STO,      AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* TC_CLOSE_EVT */          {AVDT_SCB_HDL_TC_CLOSE_STO,     AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
  #else
      /* TC_OPEN_EVT */           {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* TC_CLOSE_EVT */          {AVDT_SCB_HDL_TC_CLOSE,         AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
  #endif
      /* TC_CONG_EVT */           {AVDT_SCB_CONG_STATE,           AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* TC_DATA_EVT */           {AVDT_SCB_DROP_PKT,             AVDT_SCB_IGNORE,            AVDT_SCB_OPEN_ST},
      /* CC_CLOSE_EVT */          {AVDT_SCB_SND_TC_CLOSE,         AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST}
  };
  
  /* state table for streaming state */
  const UINT8 avdt_scb_st_stream[][AVDT_SCB_NUM_COLS] = {
      /* Event                     Action 1                       Action 2                    Next state */
      /* API_REMOVE_EVT */        {AVDT_SCB_SND_STREAM_CLOSE,     AVDT_SCB_SET_REMOVE,        AVDT_SCB_CLOSING_ST},
      /* API_WRITE_REQ_EVT */     {AVDT_SCB_HDL_WRITE_REQ,        AVDT_SCB_CHK_SND_PKT,       AVDT_SCB_STREAM_ST},
      /* API_GETCONFIG_REQ_EVT */ {AVDT_SCB_SND_GETCONFIG_REQ,    AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* API_DELAY_RPT_REQ_EVT */ {AVDT_SCB_SND_DELAY_RPT_REQ,    AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* API_SETCONFIG_REQ_EVT */ {AVDT_SCB_CB_ERR,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* API_OPEN_REQ_EVT */      {AVDT_SCB_CB_ERR,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* API_CLOSE_REQ_EVT */     {AVDT_SCB_SND_STREAM_CLOSE,     AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_RECONFIG_REQ_EVT */  {AVDT_SCB_CB_ERR,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* API_SECURITY_REQ_EVT */  {AVDT_SCB_SND_SECURITY_REQ,     AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* API_ABORT_REQ_EVT */     {AVDT_SCB_SND_ABORT_REQ,        AVDT_SCB_CLR_PKT,           AVDT_SCB_CLOSING_ST},
      /* API_GETCONFIG_RSP_EVT */ {AVDT_SCB_SND_GETCONFIG_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* API_SETCONFIG_RSP_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* API_SETCONFIG_REJ_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* API_OPEN_RSP_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* API_CLOSE_RSP_EVT */     {AVDT_SCB_SND_CLOSE_RSP,        AVDT_SCB_TC_TIMER,          AVDT_SCB_CLOSING_ST},
      /* API_RECONFIG_RSP_EVT */  {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* API_SECURITY_RSP_EVT */  {AVDT_SCB_SND_SECURITY_RSP,     AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* API_ABORT_RSP_EVT */     {AVDT_SCB_SND_ABORT_RSP,        AVDT_SCB_TC_TIMER,          AVDT_SCB_CLOSING_ST},
      /* MSG_SETCONFIG_CMD_EVT */ {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_GETCONFIG_CMD_EVT */ {AVDT_SCB_HDL_GETCONFIG_CMD,    AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_OPEN_CMD_EVT */      {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_START_CMD_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_SUSPEND_CMD_EVT */   {AVDT_SCB_HDL_SUSPEND_CMD,      AVDT_SCB_CLR_PKT,           AVDT_SCB_OPEN_ST},
      /* MSG_CLOSE_CMD_EVT */     {AVDT_SCB_HDL_CLOSE_CMD,        AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_ABORT_CMD_EVT */     {AVDT_SCB_HDL_ABORT_CMD,        AVDT_SCB_CLR_PKT,           AVDT_SCB_STREAM_ST},
      /* MSG_RECONFIG_CMD_EVT */  {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_SECURITY_CMD_EVT */  {AVDT_SCB_HDL_SECURITY_CMD,     AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_DELAY_RPT_CMD_EVT */ {AVDT_SCB_HDL_DELAY_RPT_CMD,    AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_DELAY_RPT_RSP_EVT */ {AVDT_SCB_HDL_DELAY_RPT_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_SETCONFIG_RSP_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_GETCONFIG_RSP_EVT */ {AVDT_SCB_HDL_GETCONFIG_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_OPEN_RSP_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_START_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_SUSPEND_RSP_EVT */   {AVDT_SCB_HDL_SUSPEND_RSP,      AVDT_SCB_CLR_PKT,           AVDT_SCB_OPEN_ST},
      /* MSG_CLOSE_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_ABORT_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_RECONFIG_RSP_EVT */  {AVDT_SCB_HDL_RECONFIG_RSP,     AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_SECURITY_RSP_EVT */  {AVDT_SCB_HDL_SECURITY_RSP,     AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_SETCONFIG_REJ_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_OPEN_REJ_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_START_REJ_EVT */     {AVDT_SCB_HDL_START_RSP,        AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* MSG_SUSPEND_REJ_EVT */   {AVDT_SCB_HDL_SUSPEND_RSP,      AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* TC_TOUT_EVT */           {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* TC_OPEN_EVT */           {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* TC_CLOSE_EVT */          {AVDT_SCB_HDL_TC_CLOSE,         AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* TC_CONG_EVT */           {AVDT_SCB_CONG_STATE,           AVDT_SCB_CHK_SND_PKT,       AVDT_SCB_STREAM_ST},
      /* TC_DATA_EVT */           {AVDT_SCB_HDL_PKT,              AVDT_SCB_IGNORE,            AVDT_SCB_STREAM_ST},
      /* CC_CLOSE_EVT */          {AVDT_SCB_SND_TC_CLOSE,         AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST}
  };
  
  /* state table for closing state */
  const UINT8 avdt_scb_st_closing[][AVDT_SCB_NUM_COLS] = {
      /* Event                     Action 1                       Action 2                    Next state */
      /* API_REMOVE_EVT */        {AVDT_SCB_SET_REMOVE,           AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_WRITE_REQ_EVT */     {AVDT_SCB_FREE_PKT,             AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_GETCONFIG_REQ_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_DELAY_RPT_REQ_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_SETCONFIG_REQ_EVT */ {AVDT_SCB_CB_ERR,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_OPEN_REQ_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_CLOSE_REQ_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_RECONFIG_REQ_EVT */  {AVDT_SCB_CB_ERR,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_SECURITY_REQ_EVT */  {AVDT_SCB_CB_ERR,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_ABORT_REQ_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_GETCONFIG_RSP_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_SETCONFIG_RSP_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_SETCONFIG_REJ_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_OPEN_RSP_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_CLOSE_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_RECONFIG_RSP_EVT */  {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_SECURITY_RSP_EVT */  {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* API_ABORT_RSP_EVT */     {AVDT_SCB_SND_ABORT_RSP,        AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_SETCONFIG_CMD_EVT */ {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_GETCONFIG_CMD_EVT */ {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_OPEN_CMD_EVT */      {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_START_CMD_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_SUSPEND_CMD_EVT */   {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_CLOSE_CMD_EVT */     {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_ABORT_CMD_EVT */     {AVDT_SCB_HDL_ABORT_CMD,        AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_RECONFIG_CMD_EVT */  {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_SECURITY_CMD_EVT */  {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_DELAY_RPT_CMD_EVT */ {AVDT_SCB_REJ_STATE,            AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_DELAY_RPT_RSP_EVT */ {AVDT_SCB_HDL_DELAY_RPT_RSP,    AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_SETCONFIG_RSP_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_GETCONFIG_RSP_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_OPEN_RSP_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_START_RSP_EVT */     {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_SUSPEND_RSP_EVT */   {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_CLOSE_RSP_EVT */     {AVDT_SCB_SND_TC_CLOSE,         AVDT_SCB_HDL_CLOSE_RSP,     AVDT_SCB_CLOSING_ST},
      /* MSG_ABORT_RSP_EVT */     {AVDT_SCB_SND_TC_CLOSE,         AVDT_SCB_HDL_ABORT_RSP,     AVDT_SCB_CLOSING_ST},
      /* MSG_RECONFIG_RSP_EVT */  {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_SECURITY_RSP_EVT */  {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_SETCONFIG_REJ_EVT */ {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_OPEN_REJ_EVT */      {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_START_REJ_EVT */     {AVDT_SCB_HDL_START_RSP,        AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* MSG_SUSPEND_REJ_EVT */   {AVDT_SCB_HDL_SUSPEND_RSP,      AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* TC_TOUT_EVT */           {AVDT_SCB_SND_TC_CLOSE,         AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* TC_OPEN_EVT */           {AVDT_SCB_SND_TC_CLOSE,         AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* TC_CLOSE_EVT */          {AVDT_SCB_HDL_TC_CLOSE,         AVDT_SCB_IGNORE,            AVDT_SCB_IDLE_ST},
      /* TC_CONG_EVT */           {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* TC_DATA_EVT */           {AVDT_SCB_DROP_PKT,             AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST},
      /* CC_CLOSE_EVT */          {AVDT_SCB_IGNORE,               AVDT_SCB_IGNORE,            AVDT_SCB_CLOSING_ST}
  };
  
  /* type for state table */
  typedef const UINT8 (*tAVDT_SCB_ST_TBL)[AVDT_SCB_NUM_COLS];
  
  /* state table */
  const tAVDT_SCB_ST_TBL avdt_scb_st_tbl[] = {
      avdt_scb_st_idle,
      avdt_scb_st_conf,
      avdt_scb_st_opening,
      avdt_scb_st_open,
      avdt_scb_st_stream,
      avdt_scb_st_closing
  };
  
  
  /*******************************************************************************
  **
  ** Function         avdt_scb_event
  **
  ** Description      State machine event handling function for scb
  **
  **
  ** Returns          Nothing.
  **
  *******************************************************************************/
  void avdt_scb_event(tAVDT_SCB *p_scb, UINT8 event, tAVDT_SCB_EVT *p_data)
  {
      tAVDT_SCB_ST_TBL    state_table;
      UINT8               action;
      int                 i;
  
  #if AVDT_DEBUG == TRUE
      AVDT_TRACE_EVENT("SCB hdl=%d event=%d/%s state=%s\n", avdt_scb_to_hdl(p_scb), event, avdt_scb_evt_str[event], avdt_scb_st_str[p_scb->state]);
  #endif
      /* set current event */
      p_scb->curr_evt = event;
  
      /* look up the state table for the current state */
      state_table = avdt_scb_st_tbl[p_scb->state];
  
      /* set next state */
      if (p_scb->state != state_table[event][AVDT_SCB_NEXT_STATE]) {
          p_scb->state = state_table[event][AVDT_SCB_NEXT_STATE];
      }
  
      /* execute action functions */
      for (i = 0; i < AVDT_SCB_ACTIONS; i++) {
          if ((action = state_table[event][i]) != AVDT_SCB_IGNORE) {
              (*avdt_cb.p_scb_act[action])(p_scb, p_data);
          } else {
              break;
          }
      }
  }
  
  
  /*******************************************************************************
  **
  ** Function         avdt_scb_init
  **
  ** Description      Initialize stream control block module.
  **
  **
  ** Returns          Nothing.
  **
  *******************************************************************************/
  void avdt_scb_init(void)
  {
      memset(&avdt_cb.scb[0], 0, sizeof(tAVDT_SCB) * AVDT_NUM_SEPS);
      avdt_cb.p_scb_act = (tAVDT_SCB_ACTION *) avdt_scb_action;
  }
  
  
  /*******************************************************************************
  **
  ** Function         avdt_scb_alloc
  **
  ** Description      Allocate a stream control block.
  **
  **
  ** Returns          pointer to the scb, or NULL if none could be allocated.
  **
  *******************************************************************************/
  tAVDT_SCB *avdt_scb_alloc(tAVDT_CS *p_cs)
  {
      tAVDT_SCB   *p_scb = &avdt_cb.scb[0];
      int         i;
  
      /* find available scb */
      for (i = 0; i < AVDT_NUM_SEPS; i++, p_scb++) {
          if (!p_scb->allocated) {
              memset(p_scb, 0, sizeof(tAVDT_SCB));
              p_scb->allocated = TRUE;
              p_scb->p_ccb = NULL;
  
              /* initialize sink as activated */
              if (p_cs->tsep == AVDT_TSEP_SNK) {
                  p_scb->sink_activated = TRUE;
              }
  
              memcpy(&p_scb->cs, p_cs, sizeof(tAVDT_CS));
  #if AVDT_MULTIPLEXING == TRUE
              /* initialize fragments gueue */
              p_scb->frag_q = fixed_queue_new(SIZE_MAX);
  
              if (p_cs->cfg.psc_mask & AVDT_PSC_MUX) {
                  p_scb->cs.cfg.mux_tcid_media = avdt_ad_type_to_tcid(AVDT_CHAN_MEDIA, p_scb);
  #if AVDT_REPORTING == TRUE
                  if (p_cs->cfg.psc_mask & AVDT_PSC_REPORT) {
                      p_scb->cs.cfg.mux_tcid_report = avdt_ad_type_to_tcid(AVDT_CHAN_REPORT, p_scb);
                  }
  #endif
              }
  #endif
              p_scb->timer_entry.param = (UINT32) p_scb;
              AVDT_TRACE_DEBUG("avdt_scb_alloc hdl=%d, psc_mask:0x%x\n", i + 1, p_cs->cfg.psc_mask);
              break;
          }
      }
  
      if (i == AVDT_NUM_SEPS) {
          /* out of ccbs */
          p_scb = NULL;
          AVDT_TRACE_WARNING("Out of scbs");
      }
  
      return p_scb;
  }
  
  /*******************************************************************************
  **
  ** Function         avdt_scb_dealloc
  **
  ** Description      Deallocate a stream control block.
  **
  **
  ** Returns          void.
  **
  *******************************************************************************/
  void avdt_scb_dealloc(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data)
  {
      UNUSED(p_data);
  
      AVDT_TRACE_DEBUG("avdt_scb_dealloc hdl=%d\n", avdt_scb_to_hdl(p_scb));
      btu_stop_timer(&p_scb->timer_entry);
  
  #if AVDT_MULTIPLEXING == TRUE
      /* free fragments we're holding, if any; it shouldn't happen */
      fixed_queue_free(p_scb->frag_q, osi_free_func);
  #endif
  
      memset(p_scb, 0, sizeof(tAVDT_SCB));
  }
  
  /*******************************************************************************
  **
  ** Function         avdt_scb_to_hdl
  **
  ** Description      Given a pointer to an scb, return its handle (or seid).
  **
  **
  ** Returns          Index of scb.
  **
  *******************************************************************************/
  UINT8 avdt_scb_to_hdl(tAVDT_SCB *p_scb)
  {
      return (UINT8) (p_scb - avdt_cb.scb + 1);
  }
  
  /*******************************************************************************
  **
  ** Function         avdt_scb_by_hdl
  **
  ** Description      Given an scb handle (or seid), return a pointer to the scb.
  **
  **
  ** Returns          Pointer to scb or NULL if index is out of range or scb
  **                  is not allocated.
  **
  *******************************************************************************/
  tAVDT_SCB *avdt_scb_by_hdl(UINT8 hdl)
  {
      tAVDT_SCB   *p_scb;
  
      /* verify index */
      if ((hdl > 0) && (hdl <= AVDT_NUM_SEPS)) {
          p_scb = &avdt_cb.scb[hdl - 1];
  
          /* verify scb is allocated */
          if (!p_scb->allocated) {
              p_scb = NULL;
              AVDT_TRACE_WARNING("scb hdl %d not allocated\n", hdl);
          }
      } else {
          p_scb = NULL;
          AVDT_TRACE_WARNING("scb hdl %d out of range\n", hdl);
      }
      return p_scb;
  }
  
  /*******************************************************************************
  **
  ** Function         avdt_scb_verify
  **
  ** Description      Verify the condition of a list of scbs.
  **
  **
  ** Returns          SEID that failed, or 0 if success.
  **
  *******************************************************************************/
  UINT8 avdt_scb_verify(tAVDT_CCB *p_ccb, UINT8 state, UINT8 *p_seid, UINT16 num_seid, UINT8 *p_err_code)
  {
      int         i;
      tAVDT_SCB   *p_scb;
      UINT8       nsc_mask;
      UINT8       ret = 0;
  
      AVDT_TRACE_DEBUG("avdt_scb_verify state %d\n", state);
      /* set nonsupported command mask */
      /* translate public state into private state */
      nsc_mask = 0;
      if (state == AVDT_VERIFY_SUSPEND) {
          nsc_mask = AVDT_NSC_SUSPEND;
      }
  
      /* verify every scb */
      for (i = 0, *p_err_code = 0; (i < num_seid) && (*p_err_code == 0) && (i < AVDT_NUM_SEPS); i++) {
          if ((p_scb = avdt_scb_by_hdl(p_seid[i])) == NULL) {
              *p_err_code = AVDT_ERR_BAD_STATE;
          } else if (p_scb->p_ccb != p_ccb) {
              *p_err_code = AVDT_ERR_BAD_STATE;
          } else if (p_scb->cs.nsc_mask & nsc_mask) {
              *p_err_code = AVDT_ERR_NSC;
          }
  
          switch (state) {
          case AVDT_VERIFY_OPEN:
          case AVDT_VERIFY_START:
              if (p_scb->state != AVDT_SCB_OPEN_ST && p_scb->state != AVDT_SCB_STREAM_ST) {
                  *p_err_code = AVDT_ERR_BAD_STATE;
              }
              break;
  
          case AVDT_VERIFY_SUSPEND:
          case AVDT_VERIFY_STREAMING:
              if (p_scb->state != AVDT_SCB_STREAM_ST) {
                  *p_err_code = AVDT_ERR_BAD_STATE;
              }
              break;
          }
      }
  
      if ((i != num_seid) && (i < AVDT_NUM_SEPS)) {
          ret = p_seid[i];
      }
  
      return ret;
  }
  
  /*******************************************************************************
  **
  ** Function         avdt_scb_peer_seid_list
  **
  ** Description      Given a list of SCB handles, return a list of peer SEIDs
  **                  for the handles, copied in place into the struct passed in.
  **
  **
  ** Returns          Nothing.
  **
  *******************************************************************************/
  void avdt_scb_peer_seid_list(tAVDT_MULTI *p_multi)
  {
      int         i;
      tAVDT_SCB   *p_scb;
  
      for (i = 0; i < p_multi->num_seps; i++) {
          if ((p_scb = avdt_scb_by_hdl(p_multi->seid_list[i])) != NULL) {
              p_multi->seid_list[i] = p_scb->peer_seid;
          }
      }
  }
  
  #endif /* #if (defined(AVDT_INCLUDED) && AVDT_INCLUDED == TRUE) */
  