diff options
Diffstat (limited to 'stack/avdt/avdt_ccb.c')
| -rw-r--r-- | stack/avdt/avdt_ccb.c | 464 |
1 files changed, 464 insertions, 0 deletions
diff --git a/stack/avdt/avdt_ccb.c b/stack/avdt/avdt_ccb.c new file mode 100644 index 0000000..9cb40b2 --- /dev/null +++ b/stack/avdt/avdt_ccb.c @@ -0,0 +1,464 @@ +/****************************************************************************** + * + * 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 "data_types.h" +#include "bt_target.h" +#include "avdt_api.h" +#include "avdtc_api.h" +#include "avdt_int.h" +#include "gki.h" +#include "btu.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 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 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 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 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 (*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 event, tAVDT_CCB_EVT *p_data) +{ + tAVDT_CCB_ST_TBL state_table; + UINT8 action; + int i; + +#if AVDT_DEBUG == TRUE + AVDT_TRACE_EVENT3("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 + BTTRC_AVDT_CCB_EVENT(event, p_ccb->state); + + /* 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]) + BTTRC_AVDT_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++) + { + if ((action = state_table[event][i]) != AVDT_CCB_IGNORE) + { + BTTRC_AVDT_CCB_ACTION(action); + (*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_DEBUG6("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); + GKI_init_q(&p_ccb->cmd_q); + GKI_init_q(&p_ccb->rsp_q); + p_ccb->timer_entry.param = (UINT32) p_ccb; + AVDT_TRACE_DEBUG1("avdt_ccb_alloc %d", i); + break; + } + } + + if (i == AVDT_NUM_LINKS) + { + /* out of ccbs */ + p_ccb = NULL; + AVDT_TRACE_WARNING0("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, tAVDT_CCB_EVT *p_data) +{ + AVDT_TRACE_DEBUG1("avdt_ccb_dealloc %d", avdt_ccb_to_idx(p_ccb)); + btu_stop_timer(&p_ccb->timer_entry); + 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 avdt_ccb_to_idx(tAVDT_CCB *p_ccb) +{ + /* use array arithmetic to determine index */ + return (UINT8) (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 idx) +{ + tAVDT_CCB *p_ccb; + + /* verify index */ + if (idx < AVDT_NUM_LINKS) + { + p_ccb = &avdt_cb.ccb[idx]; + } + else + { + p_ccb = NULL; + AVDT_TRACE_WARNING1("No ccb for idx %d", idx); + } + return p_ccb; +} + |