| /****************************************************************************** |
| * |
| * 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 channel control block state machine and |
| * functions which operate on the channel control block. |
| * |
| ******************************************************************************/ |
| |
| #include <string.h> |
| #include "bt_types.h" |
| #include "bt_target.h" |
| #include "bt_utils.h" |
| #include "avdt_api.h" |
| #include "avdtc_api.h" |
| #include "avdt_int.h" |
| #include "bt_common.h" |
| #include "btu.h" |
| #include "osi/include/osi.h" |
| |
| /***************************************************************************** |
| ** state machine constants and types |
| *****************************************************************************/ |
| #if (AVDT_DEBUG == TRUE) |
| |
| /* verbose state strings for trace */ |
| const char * const avdt_ccb_st_str[] = { |
| "CCB_IDLE_ST", |
| "CCB_OPENING_ST", |
| "CCB_OPEN_ST", |
| "CCB_CLOSING_ST" |
| }; |
| |
| /* verbose event strings for trace */ |
| const char * const avdt_ccb_evt_str[] = { |
| "API_DISCOVER_REQ_EVT", |
| "API_GETCAP_REQ_EVT", |
| "API_START_REQ_EVT", |
| "API_SUSPEND_REQ_EVT", |
| "API_DISCOVER_RSP_EVT", |
| "API_GETCAP_RSP_EVT", |
| "API_START_RSP_EVT", |
| "API_SUSPEND_RSP_EVT", |
| "API_CONNECT_REQ_EVT", |
| "API_DISCONNECT_REQ_EVT", |
| "MSG_DISCOVER_CMD_EVT", |
| "MSG_GETCAP_CMD_EVT", |
| "MSG_START_CMD_EVT", |
| "MSG_SUSPEND_CMD_EVT", |
| "MSG_DISCOVER_RSP_EVT", |
| "MSG_GETCAP_RSP_EVT", |
| "MSG_START_RSP_EVT", |
| "MSG_SUSPEND_RSP_EVT", |
| "RCVRSP_EVT", |
| "SENDMSG_EVT", |
| "RET_TOUT_EVT", |
| "RSP_TOUT_EVT", |
| "IDLE_TOUT_EVT", |
| "UL_OPEN_EVT", |
| "UL_CLOSE_EVT", |
| "LL_OPEN_EVT", |
| "LL_CLOSE_EVT", |
| "LL_CONG_EVT" |
| }; |
| |
| #endif |
| |
| |
| /* action function list */ |
| const tAVDT_CCB_ACTION avdt_ccb_action[] = { |
| avdt_ccb_chan_open, |
| avdt_ccb_chan_close, |
| avdt_ccb_chk_close, |
| avdt_ccb_hdl_discover_cmd, |
| avdt_ccb_hdl_discover_rsp, |
| avdt_ccb_hdl_getcap_cmd, |
| avdt_ccb_hdl_getcap_rsp, |
| avdt_ccb_hdl_start_cmd, |
| avdt_ccb_hdl_start_rsp, |
| avdt_ccb_hdl_suspend_cmd, |
| avdt_ccb_hdl_suspend_rsp, |
| avdt_ccb_snd_discover_cmd, |
| avdt_ccb_snd_discover_rsp, |
| avdt_ccb_snd_getcap_cmd, |
| avdt_ccb_snd_getcap_rsp, |
| avdt_ccb_snd_start_cmd, |
| avdt_ccb_snd_start_rsp, |
| avdt_ccb_snd_suspend_cmd, |
| avdt_ccb_snd_suspend_rsp, |
| avdt_ccb_clear_cmds, |
| avdt_ccb_cmd_fail, |
| avdt_ccb_free_cmd, |
| avdt_ccb_cong_state, |
| avdt_ccb_ret_cmd, |
| avdt_ccb_snd_cmd, |
| avdt_ccb_snd_msg, |
| avdt_ccb_set_reconn, |
| avdt_ccb_clr_reconn, |
| avdt_ccb_chk_reconn, |
| avdt_ccb_chk_timer, |
| avdt_ccb_set_conn, |
| avdt_ccb_set_disconn, |
| avdt_ccb_do_disconn, |
| avdt_ccb_ll_closed, |
| avdt_ccb_ll_opened, |
| avdt_ccb_dealloc |
| }; |
| |
| /* state table information */ |
| #define AVDT_CCB_ACTIONS 2 /* number of actions */ |
| #define AVDT_CCB_NEXT_STATE 2 /* position of next state */ |
| #define AVDT_CCB_NUM_COLS 3 /* number of columns in state tables */ |
| |
| /* state table for idle state */ |
| const uint8_t avdt_ccb_st_idle[][AVDT_CCB_NUM_COLS] = { |
| /* Event Action 1 Action 2 Next state */ |
| /* API_DISCOVER_REQ_EVT */ {AVDT_CCB_SND_DISCOVER_CMD, AVDT_CCB_CHAN_OPEN, AVDT_CCB_OPENING_ST}, |
| /* API_GETCAP_REQ_EVT */ {AVDT_CCB_SND_GETCAP_CMD, AVDT_CCB_CHAN_OPEN, AVDT_CCB_OPENING_ST}, |
| /* API_START_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* API_SUSPEND_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* API_DISCOVER_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* API_GETCAP_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* API_START_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* API_SUSPEND_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* API_CONNECT_REQ_EVT */ {AVDT_CCB_SET_CONN, AVDT_CCB_CHAN_OPEN, AVDT_CCB_OPENING_ST}, |
| /* API_DISCONNECT_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* MSG_DISCOVER_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* MSG_GETCAP_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* MSG_START_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* MSG_SUSPEND_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* MSG_DISCOVER_RSP_EVT */ {AVDT_CCB_HDL_DISCOVER_RSP, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* MSG_GETCAP_RSP_EVT */ {AVDT_CCB_HDL_GETCAP_RSP, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* MSG_START_RSP_EVT */ {AVDT_CCB_HDL_START_RSP, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* MSG_SUSPEND_RSP_EVT */ {AVDT_CCB_HDL_SUSPEND_RSP, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* RCVRSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* SENDMSG_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* RET_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* RSP_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* IDLE_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* UL_OPEN_EVT */ {AVDT_CCB_CHAN_OPEN, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* UL_CLOSE_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* LL_OPEN_EVT */ {AVDT_CCB_LL_OPENED, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, |
| /* LL_CLOSE_EVT */ {AVDT_CCB_LL_CLOSED, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* LL_CONG_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST} |
| }; |
| |
| /* state table for opening state */ |
| const uint8_t avdt_ccb_st_opening[][AVDT_CCB_NUM_COLS] = { |
| /* Event Action 1 Action 2 Next state */ |
| /* API_DISCOVER_REQ_EVT */ {AVDT_CCB_SND_DISCOVER_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* API_GETCAP_REQ_EVT */ {AVDT_CCB_SND_GETCAP_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* API_START_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* API_SUSPEND_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* API_DISCOVER_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* API_GETCAP_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* API_START_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* API_SUSPEND_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* API_CONNECT_REQ_EVT */ {AVDT_CCB_SET_CONN, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* API_DISCONNECT_REQ_EVT */ {AVDT_CCB_SET_DISCONN, AVDT_CCB_DO_DISCONN, AVDT_CCB_CLOSING_ST}, |
| /* MSG_DISCOVER_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* MSG_GETCAP_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* MSG_START_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* MSG_SUSPEND_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* MSG_DISCOVER_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* MSG_GETCAP_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* MSG_START_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* MSG_SUSPEND_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* RCVRSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* SENDMSG_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* RET_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* RSP_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* IDLE_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* UL_OPEN_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, |
| /* UL_CLOSE_EVT */ {AVDT_CCB_CLEAR_CMDS, AVDT_CCB_CHAN_CLOSE, AVDT_CCB_CLOSING_ST}, |
| /* LL_OPEN_EVT */ {AVDT_CCB_SND_CMD, AVDT_CCB_LL_OPENED, AVDT_CCB_OPEN_ST}, |
| /* LL_CLOSE_EVT */ {AVDT_CCB_LL_CLOSED, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* LL_CONG_EVT */ {AVDT_CCB_CONG_STATE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST} |
| }; |
| |
| /* state table for open state */ |
| const uint8_t avdt_ccb_st_open[][AVDT_CCB_NUM_COLS] = { |
| /* Event Action 1 Action 2 Next state */ |
| /* API_DISCOVER_REQ_EVT */ {AVDT_CCB_SND_DISCOVER_CMD, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, |
| /* API_GETCAP_REQ_EVT */ {AVDT_CCB_SND_GETCAP_CMD, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, |
| /* API_START_REQ_EVT */ {AVDT_CCB_SND_START_CMD, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, |
| /* API_SUSPEND_REQ_EVT */ {AVDT_CCB_SND_SUSPEND_CMD, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, |
| /* API_DISCOVER_RSP_EVT */ {AVDT_CCB_SND_DISCOVER_RSP, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, |
| /* API_GETCAP_RSP_EVT */ {AVDT_CCB_SND_GETCAP_RSP, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, |
| /* API_START_RSP_EVT */ {AVDT_CCB_SND_START_RSP, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, |
| /* API_SUSPEND_RSP_EVT */ {AVDT_CCB_SND_SUSPEND_RSP, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, |
| /* API_CONNECT_REQ_EVT */ {AVDT_CCB_SET_CONN, AVDT_CCB_LL_OPENED, AVDT_CCB_OPEN_ST}, |
| /* API_DISCONNECT_REQ_EVT */ {AVDT_CCB_SET_DISCONN, AVDT_CCB_DO_DISCONN, AVDT_CCB_CLOSING_ST}, |
| /* MSG_DISCOVER_CMD_EVT */ {AVDT_CCB_HDL_DISCOVER_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, |
| /* MSG_GETCAP_CMD_EVT */ {AVDT_CCB_HDL_GETCAP_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, |
| /* MSG_START_CMD_EVT */ {AVDT_CCB_HDL_START_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, |
| /* MSG_SUSPEND_CMD_EVT */ {AVDT_CCB_HDL_SUSPEND_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, |
| /* MSG_DISCOVER_RSP_EVT */ {AVDT_CCB_CHK_CLOSE, AVDT_CCB_HDL_DISCOVER_RSP, AVDT_CCB_OPEN_ST}, |
| /* MSG_GETCAP_RSP_EVT */ {AVDT_CCB_CHK_CLOSE, AVDT_CCB_HDL_GETCAP_RSP, AVDT_CCB_OPEN_ST}, |
| /* MSG_START_RSP_EVT */ {AVDT_CCB_HDL_START_RSP, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, |
| /* MSG_SUSPEND_RSP_EVT */ {AVDT_CCB_HDL_SUSPEND_RSP, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, |
| /* RCVRSP_EVT */ {AVDT_CCB_FREE_CMD, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, |
| /* SENDMSG_EVT */ {AVDT_CCB_SND_MSG, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, |
| /* RET_TOUT_EVT */ {AVDT_CCB_RET_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, |
| /* RSP_TOUT_EVT */ {AVDT_CCB_CMD_FAIL, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, |
| /* IDLE_TOUT_EVT */ {AVDT_CCB_CLEAR_CMDS, AVDT_CCB_CHAN_CLOSE, AVDT_CCB_CLOSING_ST}, |
| /* UL_OPEN_EVT */ {AVDT_CCB_CHK_TIMER, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, |
| /* UL_CLOSE_EVT */ {AVDT_CCB_CHK_CLOSE, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, |
| /* LL_OPEN_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, |
| /* LL_CLOSE_EVT */ {AVDT_CCB_LL_CLOSED, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* LL_CONG_EVT */ {AVDT_CCB_CONG_STATE, AVDT_CCB_SND_MSG, AVDT_CCB_OPEN_ST} |
| }; |
| |
| /* state table for closing state */ |
| const uint8_t avdt_ccb_st_closing[][AVDT_CCB_NUM_COLS] = { |
| /* Event Action 1 Action 2 Next state */ |
| /* API_DISCOVER_REQ_EVT */ {AVDT_CCB_SET_RECONN, AVDT_CCB_SND_DISCOVER_CMD, AVDT_CCB_CLOSING_ST}, |
| /* API_GETCAP_REQ_EVT */ {AVDT_CCB_SET_RECONN, AVDT_CCB_SND_GETCAP_CMD, AVDT_CCB_CLOSING_ST}, |
| /* API_START_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* API_SUSPEND_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* API_DISCOVER_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* API_GETCAP_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* API_START_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* API_SUSPEND_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* API_CONNECT_REQ_EVT */ {AVDT_CCB_SET_RECONN, AVDT_CCB_SET_CONN, AVDT_CCB_CLOSING_ST}, |
| /* API_DISCONNECT_REQ_EVT */ {AVDT_CCB_CLR_RECONN, AVDT_CCB_SET_DISCONN, AVDT_CCB_CLOSING_ST}, |
| /* MSG_DISCOVER_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* MSG_GETCAP_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* MSG_START_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* MSG_SUSPEND_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* MSG_DISCOVER_RSP_EVT */ {AVDT_CCB_HDL_DISCOVER_RSP, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* MSG_GETCAP_RSP_EVT */ {AVDT_CCB_HDL_GETCAP_RSP, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* MSG_START_RSP_EVT */ {AVDT_CCB_HDL_START_RSP, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* MSG_SUSPEND_RSP_EVT */ {AVDT_CCB_HDL_SUSPEND_RSP, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* RCVRSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* SENDMSG_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* RET_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* RSP_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* IDLE_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* UL_OPEN_EVT */ {AVDT_CCB_SET_RECONN, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* UL_CLOSE_EVT */ {AVDT_CCB_CLR_RECONN, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* LL_OPEN_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, |
| /* LL_CLOSE_EVT */ {AVDT_CCB_CHK_RECONN, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, |
| /* LL_CONG_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST} |
| }; |
| |
| /* type for state table */ |
| typedef const uint8_t (*tAVDT_CCB_ST_TBL)[AVDT_CCB_NUM_COLS]; |
| |
| /* state table */ |
| const tAVDT_CCB_ST_TBL avdt_ccb_st_tbl[] = { |
| avdt_ccb_st_idle, |
| avdt_ccb_st_opening, |
| avdt_ccb_st_open, |
| avdt_ccb_st_closing |
| }; |
| |
| /******************************************************************************* |
| ** |
| ** Function avdt_ccb_init |
| ** |
| ** Description Initialize channel control block module. |
| ** |
| ** |
| ** Returns Nothing. |
| ** |
| *******************************************************************************/ |
| void avdt_ccb_init(void) |
| { |
| memset(&avdt_cb.ccb[0], 0, sizeof(tAVDT_CCB) * AVDT_NUM_LINKS); |
| avdt_cb.p_ccb_act = (tAVDT_CCB_ACTION *) avdt_ccb_action; |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function avdt_ccb_event |
| ** |
| ** Description State machine event handling function for ccb |
| ** |
| ** |
| ** Returns Nothing. |
| ** |
| *******************************************************************************/ |
| void avdt_ccb_event(tAVDT_CCB *p_ccb, uint8_t event, tAVDT_CCB_EVT *p_data) |
| { |
| tAVDT_CCB_ST_TBL state_table; |
| uint8_t action; |
| int i; |
| |
| #if (AVDT_DEBUG == TRUE) |
| 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]); |
| #endif |
| |
| /* look up the state table for the current state */ |
| state_table = avdt_ccb_st_tbl[p_ccb->state]; |
| |
| /* set next state */ |
| if (p_ccb->state != state_table[event][AVDT_CCB_NEXT_STATE]) { |
| p_ccb->state = state_table[event][AVDT_CCB_NEXT_STATE]; |
| } |
| |
| /* execute action functions */ |
| for (i = 0; i < AVDT_CCB_ACTIONS; i++) |
| { |
| action = state_table[event][i]; |
| if (action != AVDT_CCB_IGNORE) |
| { |
| (*avdt_cb.p_ccb_act[action])(p_ccb, p_data); |
| } |
| else |
| { |
| break; |
| } |
| } |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** Function avdt_ccb_by_bd |
| ** |
| ** Description This lookup function finds the ccb for a BD address. |
| ** |
| ** |
| ** Returns pointer to the ccb, or NULL if none found. |
| ** |
| *******************************************************************************/ |
| tAVDT_CCB *avdt_ccb_by_bd(BD_ADDR bd_addr) |
| { |
| tAVDT_CCB *p_ccb = &avdt_cb.ccb[0]; |
| int i; |
| |
| for (i = 0; i < AVDT_NUM_LINKS; i++, p_ccb++) |
| { |
| /* if allocated ccb has matching ccb */ |
| if (p_ccb->allocated && (!memcmp(p_ccb->peer_addr, bd_addr, BD_ADDR_LEN))) |
| { |
| break; |
| } |
| } |
| |
| if (i == AVDT_NUM_LINKS) |
| { |
| /* if no ccb found */ |
| p_ccb = NULL; |
| |
| AVDT_TRACE_DEBUG("No ccb for addr %02x-%02x-%02x-%02x-%02x-%02x", |
| bd_addr[0], bd_addr[1], bd_addr[2], bd_addr[3], bd_addr[4], bd_addr[5]); |
| } |
| return p_ccb; |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function avdt_ccb_alloc |
| ** |
| ** Description Allocate a channel control block. |
| ** |
| ** |
| ** Returns pointer to the ccb, or NULL if none could be allocated. |
| ** |
| *******************************************************************************/ |
| tAVDT_CCB *avdt_ccb_alloc(BD_ADDR bd_addr) |
| { |
| tAVDT_CCB *p_ccb = &avdt_cb.ccb[0]; |
| int i; |
| |
| for (i = 0; i < AVDT_NUM_LINKS; i++, p_ccb++) |
| { |
| if (!p_ccb->allocated) |
| { |
| p_ccb->allocated = true; |
| memcpy(p_ccb->peer_addr, bd_addr, BD_ADDR_LEN); |
| p_ccb->cmd_q = fixed_queue_new(SIZE_MAX); |
| p_ccb->rsp_q = fixed_queue_new(SIZE_MAX); |
| p_ccb->idle_ccb_timer = alarm_new("avdt_ccb.idle_ccb_timer"); |
| p_ccb->ret_ccb_timer = alarm_new("avdt_ccb.ret_ccb_timer"); |
| p_ccb->rsp_ccb_timer = alarm_new("avdt_ccb.rsp_ccb_timer"); |
| AVDT_TRACE_DEBUG("avdt_ccb_alloc %d", i); |
| break; |
| } |
| } |
| |
| if (i == AVDT_NUM_LINKS) |
| { |
| /* out of ccbs */ |
| p_ccb = NULL; |
| AVDT_TRACE_WARNING("Out of ccbs"); |
| } |
| return p_ccb; |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function avdt_ccb_dealloc |
| ** |
| ** Description Deallocate a stream control block. |
| ** |
| ** |
| ** Returns void. |
| ** |
| *******************************************************************************/ |
| void avdt_ccb_dealloc(tAVDT_CCB *p_ccb, |
| UNUSED_ATTR tAVDT_CCB_EVT *p_data) |
| { |
| AVDT_TRACE_DEBUG("avdt_ccb_dealloc %d", avdt_ccb_to_idx(p_ccb)); |
| alarm_free(p_ccb->idle_ccb_timer); |
| alarm_free(p_ccb->ret_ccb_timer); |
| alarm_free(p_ccb->rsp_ccb_timer); |
| fixed_queue_free(p_ccb->cmd_q, NULL); |
| fixed_queue_free(p_ccb->rsp_q, NULL); |
| memset(p_ccb, 0, sizeof(tAVDT_CCB)); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function avdt_ccb_to_idx |
| ** |
| ** Description Given a pointer to an ccb, return its index. |
| ** |
| ** |
| ** Returns Index of ccb. |
| ** |
| *******************************************************************************/ |
| uint8_t avdt_ccb_to_idx(tAVDT_CCB *p_ccb) |
| { |
| /* use array arithmetic to determine index */ |
| return (uint8_t) (p_ccb - avdt_cb.ccb); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function avdt_ccb_by_idx |
| ** |
| ** Description Return ccb pointer based on ccb index. |
| ** |
| ** |
| ** Returns pointer to the ccb, or NULL if none found. |
| ** |
| *******************************************************************************/ |
| tAVDT_CCB *avdt_ccb_by_idx(uint8_t idx) |
| { |
| tAVDT_CCB *p_ccb; |
| |
| /* verify index */ |
| if (idx < AVDT_NUM_LINKS) |
| { |
| p_ccb = &avdt_cb.ccb[idx]; |
| } |
| else |
| { |
| p_ccb = NULL; |
| AVDT_TRACE_WARNING("No ccb for idx %d", idx); |
| } |
| return p_ccb; |
| } |
| |