1/****************************************************************************** 2 * 3 * Copyright (C) 2002-2012 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19/****************************************************************************** 20 * 21 * This module contains the channel control block state machine and 22 * functions which operate on the channel control block. 23 * 24 ******************************************************************************/ 25 26#include <string.h> 27#include "data_types.h" 28#include "bt_target.h" 29#include "bt_utils.h" 30#include "avdt_api.h" 31#include "avdtc_api.h" 32#include "avdt_int.h" 33#include "gki.h" 34#include "btu.h" 35 36/***************************************************************************** 37** state machine constants and types 38*****************************************************************************/ 39#if AVDT_DEBUG == TRUE 40 41/* verbose state strings for trace */ 42const char * const avdt_ccb_st_str[] = { 43 "CCB_IDLE_ST", 44 "CCB_OPENING_ST", 45 "CCB_OPEN_ST", 46 "CCB_CLOSING_ST" 47}; 48 49/* verbose event strings for trace */ 50const char * const avdt_ccb_evt_str[] = { 51 "API_DISCOVER_REQ_EVT", 52 "API_GETCAP_REQ_EVT", 53 "API_START_REQ_EVT", 54 "API_SUSPEND_REQ_EVT", 55 "API_DISCOVER_RSP_EVT", 56 "API_GETCAP_RSP_EVT", 57 "API_START_RSP_EVT", 58 "API_SUSPEND_RSP_EVT", 59 "API_CONNECT_REQ_EVT", 60 "API_DISCONNECT_REQ_EVT", 61 "MSG_DISCOVER_CMD_EVT", 62 "MSG_GETCAP_CMD_EVT", 63 "MSG_START_CMD_EVT", 64 "MSG_SUSPEND_CMD_EVT", 65 "MSG_DISCOVER_RSP_EVT", 66 "MSG_GETCAP_RSP_EVT", 67 "MSG_START_RSP_EVT", 68 "MSG_SUSPEND_RSP_EVT", 69 "RCVRSP_EVT", 70 "SENDMSG_EVT", 71 "RET_TOUT_EVT", 72 "RSP_TOUT_EVT", 73 "IDLE_TOUT_EVT", 74 "UL_OPEN_EVT", 75 "UL_CLOSE_EVT", 76 "LL_OPEN_EVT", 77 "LL_CLOSE_EVT", 78 "LL_CONG_EVT" 79}; 80 81#endif 82 83 84/* action function list */ 85const tAVDT_CCB_ACTION avdt_ccb_action[] = { 86 avdt_ccb_chan_open, 87 avdt_ccb_chan_close, 88 avdt_ccb_chk_close, 89 avdt_ccb_hdl_discover_cmd, 90 avdt_ccb_hdl_discover_rsp, 91 avdt_ccb_hdl_getcap_cmd, 92 avdt_ccb_hdl_getcap_rsp, 93 avdt_ccb_hdl_start_cmd, 94 avdt_ccb_hdl_start_rsp, 95 avdt_ccb_hdl_suspend_cmd, 96 avdt_ccb_hdl_suspend_rsp, 97 avdt_ccb_snd_discover_cmd, 98 avdt_ccb_snd_discover_rsp, 99 avdt_ccb_snd_getcap_cmd, 100 avdt_ccb_snd_getcap_rsp, 101 avdt_ccb_snd_start_cmd, 102 avdt_ccb_snd_start_rsp, 103 avdt_ccb_snd_suspend_cmd, 104 avdt_ccb_snd_suspend_rsp, 105 avdt_ccb_clear_cmds, 106 avdt_ccb_cmd_fail, 107 avdt_ccb_free_cmd, 108 avdt_ccb_cong_state, 109 avdt_ccb_ret_cmd, 110 avdt_ccb_snd_cmd, 111 avdt_ccb_snd_msg, 112 avdt_ccb_set_reconn, 113 avdt_ccb_clr_reconn, 114 avdt_ccb_chk_reconn, 115 avdt_ccb_chk_timer, 116 avdt_ccb_set_conn, 117 avdt_ccb_set_disconn, 118 avdt_ccb_do_disconn, 119 avdt_ccb_ll_closed, 120 avdt_ccb_ll_opened, 121 avdt_ccb_dealloc 122}; 123 124/* state table information */ 125#define AVDT_CCB_ACTIONS 2 /* number of actions */ 126#define AVDT_CCB_NEXT_STATE 2 /* position of next state */ 127#define AVDT_CCB_NUM_COLS 3 /* number of columns in state tables */ 128 129/* state table for idle state */ 130const UINT8 avdt_ccb_st_idle[][AVDT_CCB_NUM_COLS] = { 131/* Event Action 1 Action 2 Next state */ 132/* API_DISCOVER_REQ_EVT */ {AVDT_CCB_SND_DISCOVER_CMD, AVDT_CCB_CHAN_OPEN, AVDT_CCB_OPENING_ST}, 133/* API_GETCAP_REQ_EVT */ {AVDT_CCB_SND_GETCAP_CMD, AVDT_CCB_CHAN_OPEN, AVDT_CCB_OPENING_ST}, 134/* API_START_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 135/* API_SUSPEND_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 136/* API_DISCOVER_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 137/* API_GETCAP_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 138/* API_START_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 139/* API_SUSPEND_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 140/* API_CONNECT_REQ_EVT */ {AVDT_CCB_SET_CONN, AVDT_CCB_CHAN_OPEN, AVDT_CCB_OPENING_ST}, 141/* API_DISCONNECT_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 142/* MSG_DISCOVER_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 143/* MSG_GETCAP_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 144/* MSG_START_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 145/* MSG_SUSPEND_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 146/* MSG_DISCOVER_RSP_EVT */ {AVDT_CCB_HDL_DISCOVER_RSP, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 147/* MSG_GETCAP_RSP_EVT */ {AVDT_CCB_HDL_GETCAP_RSP, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 148/* MSG_START_RSP_EVT */ {AVDT_CCB_HDL_START_RSP, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 149/* MSG_SUSPEND_RSP_EVT */ {AVDT_CCB_HDL_SUSPEND_RSP, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 150/* RCVRSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 151/* SENDMSG_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 152/* RET_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 153/* RSP_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 154/* IDLE_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 155/* UL_OPEN_EVT */ {AVDT_CCB_CHAN_OPEN, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 156/* UL_CLOSE_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 157/* LL_OPEN_EVT */ {AVDT_CCB_LL_OPENED, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 158/* LL_CLOSE_EVT */ {AVDT_CCB_LL_CLOSED, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 159/* LL_CONG_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST} 160}; 161 162/* state table for opening state */ 163const UINT8 avdt_ccb_st_opening[][AVDT_CCB_NUM_COLS] = { 164/* Event Action 1 Action 2 Next state */ 165/* API_DISCOVER_REQ_EVT */ {AVDT_CCB_SND_DISCOVER_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 166/* API_GETCAP_REQ_EVT */ {AVDT_CCB_SND_GETCAP_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 167/* API_START_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 168/* API_SUSPEND_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 169/* API_DISCOVER_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 170/* API_GETCAP_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 171/* API_START_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 172/* API_SUSPEND_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 173/* API_CONNECT_REQ_EVT */ {AVDT_CCB_SET_CONN, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 174/* API_DISCONNECT_REQ_EVT */ {AVDT_CCB_SET_DISCONN, AVDT_CCB_DO_DISCONN, AVDT_CCB_CLOSING_ST}, 175/* MSG_DISCOVER_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 176/* MSG_GETCAP_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 177/* MSG_START_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 178/* MSG_SUSPEND_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 179/* MSG_DISCOVER_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 180/* MSG_GETCAP_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 181/* MSG_START_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 182/* MSG_SUSPEND_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 183/* RCVRSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 184/* SENDMSG_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 185/* RET_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 186/* RSP_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 187/* IDLE_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 188/* UL_OPEN_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 189/* UL_CLOSE_EVT */ {AVDT_CCB_CLEAR_CMDS, AVDT_CCB_CHAN_CLOSE, AVDT_CCB_CLOSING_ST}, 190/* LL_OPEN_EVT */ {AVDT_CCB_SND_CMD, AVDT_CCB_LL_OPENED, AVDT_CCB_OPEN_ST}, 191/* LL_CLOSE_EVT */ {AVDT_CCB_LL_CLOSED, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 192/* LL_CONG_EVT */ {AVDT_CCB_CONG_STATE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST} 193}; 194 195/* state table for open state */ 196const UINT8 avdt_ccb_st_open[][AVDT_CCB_NUM_COLS] = { 197/* Event Action 1 Action 2 Next state */ 198/* API_DISCOVER_REQ_EVT */ {AVDT_CCB_SND_DISCOVER_CMD, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 199/* API_GETCAP_REQ_EVT */ {AVDT_CCB_SND_GETCAP_CMD, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 200/* API_START_REQ_EVT */ {AVDT_CCB_SND_START_CMD, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 201/* API_SUSPEND_REQ_EVT */ {AVDT_CCB_SND_SUSPEND_CMD, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 202/* API_DISCOVER_RSP_EVT */ {AVDT_CCB_SND_DISCOVER_RSP, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 203/* API_GETCAP_RSP_EVT */ {AVDT_CCB_SND_GETCAP_RSP, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 204/* API_START_RSP_EVT */ {AVDT_CCB_SND_START_RSP, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 205/* API_SUSPEND_RSP_EVT */ {AVDT_CCB_SND_SUSPEND_RSP, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 206/* API_CONNECT_REQ_EVT */ {AVDT_CCB_SET_CONN, AVDT_CCB_LL_OPENED, AVDT_CCB_OPEN_ST}, 207/* API_DISCONNECT_REQ_EVT */ {AVDT_CCB_SET_DISCONN, AVDT_CCB_DO_DISCONN, AVDT_CCB_CLOSING_ST}, 208/* MSG_DISCOVER_CMD_EVT */ {AVDT_CCB_HDL_DISCOVER_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 209/* MSG_GETCAP_CMD_EVT */ {AVDT_CCB_HDL_GETCAP_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 210/* MSG_START_CMD_EVT */ {AVDT_CCB_HDL_START_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 211/* MSG_SUSPEND_CMD_EVT */ {AVDT_CCB_HDL_SUSPEND_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 212/* MSG_DISCOVER_RSP_EVT */ {AVDT_CCB_CHK_CLOSE, AVDT_CCB_HDL_DISCOVER_RSP, AVDT_CCB_OPEN_ST}, 213/* MSG_GETCAP_RSP_EVT */ {AVDT_CCB_CHK_CLOSE, AVDT_CCB_HDL_GETCAP_RSP, AVDT_CCB_OPEN_ST}, 214/* MSG_START_RSP_EVT */ {AVDT_CCB_HDL_START_RSP, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 215/* MSG_SUSPEND_RSP_EVT */ {AVDT_CCB_HDL_SUSPEND_RSP, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 216/* RCVRSP_EVT */ {AVDT_CCB_FREE_CMD, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 217/* SENDMSG_EVT */ {AVDT_CCB_SND_MSG, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 218/* RET_TOUT_EVT */ {AVDT_CCB_RET_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 219/* RSP_TOUT_EVT */ {AVDT_CCB_CMD_FAIL, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 220/* IDLE_TOUT_EVT */ {AVDT_CCB_CLEAR_CMDS, AVDT_CCB_CHAN_CLOSE, AVDT_CCB_CLOSING_ST}, 221/* UL_OPEN_EVT */ {AVDT_CCB_CHK_TIMER, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 222/* UL_CLOSE_EVT */ {AVDT_CCB_CHK_CLOSE, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 223/* LL_OPEN_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 224/* LL_CLOSE_EVT */ {AVDT_CCB_LL_CLOSED, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 225/* LL_CONG_EVT */ {AVDT_CCB_CONG_STATE, AVDT_CCB_SND_MSG, AVDT_CCB_OPEN_ST} 226}; 227 228/* state table for closing state */ 229const UINT8 avdt_ccb_st_closing[][AVDT_CCB_NUM_COLS] = { 230/* Event Action 1 Action 2 Next state */ 231/* API_DISCOVER_REQ_EVT */ {AVDT_CCB_SET_RECONN, AVDT_CCB_SND_DISCOVER_CMD, AVDT_CCB_CLOSING_ST}, 232/* API_GETCAP_REQ_EVT */ {AVDT_CCB_SET_RECONN, AVDT_CCB_SND_GETCAP_CMD, AVDT_CCB_CLOSING_ST}, 233/* API_START_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 234/* API_SUSPEND_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 235/* API_DISCOVER_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 236/* API_GETCAP_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 237/* API_START_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 238/* API_SUSPEND_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 239/* API_CONNECT_REQ_EVT */ {AVDT_CCB_SET_RECONN, AVDT_CCB_SET_CONN, AVDT_CCB_CLOSING_ST}, 240/* API_DISCONNECT_REQ_EVT */ {AVDT_CCB_CLR_RECONN, AVDT_CCB_SET_DISCONN, AVDT_CCB_CLOSING_ST}, 241/* MSG_DISCOVER_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 242/* MSG_GETCAP_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 243/* MSG_START_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 244/* MSG_SUSPEND_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 245/* MSG_DISCOVER_RSP_EVT */ {AVDT_CCB_HDL_DISCOVER_RSP, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 246/* MSG_GETCAP_RSP_EVT */ {AVDT_CCB_HDL_GETCAP_RSP, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 247/* MSG_START_RSP_EVT */ {AVDT_CCB_HDL_START_RSP, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 248/* MSG_SUSPEND_RSP_EVT */ {AVDT_CCB_HDL_SUSPEND_RSP, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 249/* RCVRSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 250/* SENDMSG_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 251/* RET_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 252/* RSP_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 253/* IDLE_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 254/* UL_OPEN_EVT */ {AVDT_CCB_SET_RECONN, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 255/* UL_CLOSE_EVT */ {AVDT_CCB_CLR_RECONN, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 256/* LL_OPEN_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 257/* LL_CLOSE_EVT */ {AVDT_CCB_CHK_RECONN, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 258/* LL_CONG_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST} 259}; 260 261/* type for state table */ 262typedef const UINT8 (*tAVDT_CCB_ST_TBL)[AVDT_CCB_NUM_COLS]; 263 264/* state table */ 265const tAVDT_CCB_ST_TBL avdt_ccb_st_tbl[] = { 266 avdt_ccb_st_idle, 267 avdt_ccb_st_opening, 268 avdt_ccb_st_open, 269 avdt_ccb_st_closing 270}; 271 272/******************************************************************************* 273** 274** Function avdt_ccb_init 275** 276** Description Initialize channel control block module. 277** 278** 279** Returns Nothing. 280** 281*******************************************************************************/ 282void avdt_ccb_init(void) 283{ 284 memset(&avdt_cb.ccb[0], 0, sizeof(tAVDT_CCB) * AVDT_NUM_LINKS); 285 avdt_cb.p_ccb_act = (tAVDT_CCB_ACTION *) avdt_ccb_action; 286} 287 288/******************************************************************************* 289** 290** Function avdt_ccb_event 291** 292** Description State machine event handling function for ccb 293** 294** 295** Returns Nothing. 296** 297*******************************************************************************/ 298void avdt_ccb_event(tAVDT_CCB *p_ccb, UINT8 event, tAVDT_CCB_EVT *p_data) 299{ 300 tAVDT_CCB_ST_TBL state_table; 301 UINT8 action; 302 int i; 303 304#if AVDT_DEBUG == TRUE 305 AVDT_TRACE_EVENT("CCB ccb=%d event=%s state=%s", avdt_ccb_to_idx(p_ccb), avdt_ccb_evt_str[event], avdt_ccb_st_str[p_ccb->state]); 306#endif 307 BTTRC_AVDT_CCB_EVENT(event, p_ccb->state); 308 309 /* look up the state table for the current state */ 310 state_table = avdt_ccb_st_tbl[p_ccb->state]; 311 312 /* set next state */ 313 if (p_ccb->state != state_table[event][AVDT_CCB_NEXT_STATE]) { 314 BTTRC_AVDT_CCB_STATE(state_table[event][AVDT_CCB_NEXT_STATE]); 315 p_ccb->state = state_table[event][AVDT_CCB_NEXT_STATE]; 316 } 317 318 /* execute action functions */ 319 for (i = 0; i < AVDT_CCB_ACTIONS; i++) 320 { 321 if ((action = state_table[event][i]) != AVDT_CCB_IGNORE) 322 { 323 BTTRC_AVDT_CCB_ACTION(action); 324 (*avdt_cb.p_ccb_act[action])(p_ccb, p_data); 325 } 326 else 327 { 328 break; 329 } 330 } 331} 332 333 334/******************************************************************************* 335** 336** Function avdt_ccb_by_bd 337** 338** Description This lookup function finds the ccb for a BD address. 339** 340** 341** Returns pointer to the ccb, or NULL if none found. 342** 343*******************************************************************************/ 344tAVDT_CCB *avdt_ccb_by_bd(BD_ADDR bd_addr) 345{ 346 tAVDT_CCB *p_ccb = &avdt_cb.ccb[0]; 347 int i; 348 349 for (i = 0; i < AVDT_NUM_LINKS; i++, p_ccb++) 350 { 351 /* if allocated ccb has matching ccb */ 352 if (p_ccb->allocated && (!memcmp(p_ccb->peer_addr, bd_addr, BD_ADDR_LEN))) 353 { 354 break; 355 } 356 } 357 358 if (i == AVDT_NUM_LINKS) 359 { 360 /* if no ccb found */ 361 p_ccb = NULL; 362 363 AVDT_TRACE_DEBUG("No ccb for addr %02x-%02x-%02x-%02x-%02x-%02x", 364 bd_addr[0], bd_addr[1], bd_addr[2], bd_addr[3], bd_addr[4], bd_addr[5]); 365 } 366 return p_ccb; 367} 368 369/******************************************************************************* 370** 371** Function avdt_ccb_alloc 372** 373** Description Allocate a channel control block. 374** 375** 376** Returns pointer to the ccb, or NULL if none could be allocated. 377** 378*******************************************************************************/ 379tAVDT_CCB *avdt_ccb_alloc(BD_ADDR bd_addr) 380{ 381 tAVDT_CCB *p_ccb = &avdt_cb.ccb[0]; 382 int i; 383 384 for (i = 0; i < AVDT_NUM_LINKS; i++, p_ccb++) 385 { 386 if (!p_ccb->allocated) 387 { 388 p_ccb->allocated = TRUE; 389 memcpy(p_ccb->peer_addr, bd_addr, BD_ADDR_LEN); 390 GKI_init_q(&p_ccb->cmd_q); 391 GKI_init_q(&p_ccb->rsp_q); 392 p_ccb->timer_entry.param = (UINT32) p_ccb; 393 AVDT_TRACE_DEBUG("avdt_ccb_alloc %d", i); 394 break; 395 } 396 } 397 398 if (i == AVDT_NUM_LINKS) 399 { 400 /* out of ccbs */ 401 p_ccb = NULL; 402 AVDT_TRACE_WARNING("Out of ccbs"); 403 } 404 return p_ccb; 405} 406 407/******************************************************************************* 408** 409** Function avdt_ccb_dealloc 410** 411** Description Deallocate a stream control block. 412** 413** 414** Returns void. 415** 416*******************************************************************************/ 417void avdt_ccb_dealloc(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) 418{ 419 UNUSED(p_data); 420 421 AVDT_TRACE_DEBUG("avdt_ccb_dealloc %d", avdt_ccb_to_idx(p_ccb)); 422 btu_stop_timer(&p_ccb->timer_entry); 423 memset(p_ccb, 0, sizeof(tAVDT_CCB)); 424} 425 426/******************************************************************************* 427** 428** Function avdt_ccb_to_idx 429** 430** Description Given a pointer to an ccb, return its index. 431** 432** 433** Returns Index of ccb. 434** 435*******************************************************************************/ 436UINT8 avdt_ccb_to_idx(tAVDT_CCB *p_ccb) 437{ 438 /* use array arithmetic to determine index */ 439 return (UINT8) (p_ccb - avdt_cb.ccb); 440} 441 442/******************************************************************************* 443** 444** Function avdt_ccb_by_idx 445** 446** Description Return ccb pointer based on ccb index. 447** 448** 449** Returns pointer to the ccb, or NULL if none found. 450** 451*******************************************************************************/ 452tAVDT_CCB *avdt_ccb_by_idx(UINT8 idx) 453{ 454 tAVDT_CCB *p_ccb; 455 456 /* verify index */ 457 if (idx < AVDT_NUM_LINKS) 458 { 459 p_ccb = &avdt_cb.ccb[idx]; 460 } 461 else 462 { 463 p_ccb = NULL; 464 AVDT_TRACE_WARNING("No ccb for idx %d", idx); 465 } 466 return p_ccb; 467} 468 469