1 /******************************************************************************
3 * Copyright (C) 2002-2012 Broadcom Corporation
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:
9 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 ******************************************************************************/
19 /******************************************************************************
21 * This module contains the channel control block state machine and
22 * functions which operate on the channel control block.
24 ******************************************************************************/
28 #include "bt_target.h"
31 #include "avdtc_api.h"
33 #include "bt_common.h"
36 /*****************************************************************************
37 ** state machine constants and types
38 *****************************************************************************/
39 #if AVDT_DEBUG == TRUE
41 /* verbose state strings for trace */
42 const char * const avdt_ccb_st_str[] = {
49 /* verbose event strings for trace */
50 const char * const avdt_ccb_evt_str[] = {
51 "API_DISCOVER_REQ_EVT",
54 "API_SUSPEND_REQ_EVT",
55 "API_DISCOVER_RSP_EVT",
58 "API_SUSPEND_RSP_EVT",
59 "API_CONNECT_REQ_EVT",
60 "API_DISCONNECT_REQ_EVT",
61 "MSG_DISCOVER_CMD_EVT",
64 "MSG_SUSPEND_CMD_EVT",
65 "MSG_DISCOVER_RSP_EVT",
68 "MSG_SUSPEND_RSP_EVT",
84 /* action function list */
85 const tAVDT_CCB_ACTION avdt_ccb_action[] = {
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,
117 avdt_ccb_set_disconn,
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 */
129 /* state table for idle state */
130 const 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}
162 /* state table for opening state */
163 const 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}
195 /* state table for open state */
196 const 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}
228 /* state table for closing state */
229 const 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}
261 /* type for state table */
262 typedef const UINT8 (*tAVDT_CCB_ST_TBL)[AVDT_CCB_NUM_COLS];
265 const tAVDT_CCB_ST_TBL avdt_ccb_st_tbl[] = {
272 /*******************************************************************************
274 ** Function avdt_ccb_init
276 ** Description Initialize channel control block module.
281 *******************************************************************************/
282 void avdt_ccb_init(void)
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;
288 /*******************************************************************************
290 ** Function avdt_ccb_event
292 ** Description State machine event handling function for ccb
297 *******************************************************************************/
298 void avdt_ccb_event(tAVDT_CCB *p_ccb, UINT8 event, tAVDT_CCB_EVT *p_data)
300 tAVDT_CCB_ST_TBL state_table;
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]);
308 /* look up the state table for the current state */
309 state_table = avdt_ccb_st_tbl[p_ccb->state];
312 if (p_ccb->state != state_table[event][AVDT_CCB_NEXT_STATE]) {
313 p_ccb->state = state_table[event][AVDT_CCB_NEXT_STATE];
316 /* execute action functions */
317 for (i = 0; i < AVDT_CCB_ACTIONS; i++)
319 if ((action = state_table[event][i]) != AVDT_CCB_IGNORE)
321 (*avdt_cb.p_ccb_act[action])(p_ccb, p_data);
331 /*******************************************************************************
333 ** Function avdt_ccb_by_bd
335 ** Description This lookup function finds the ccb for a BD address.
338 ** Returns pointer to the ccb, or NULL if none found.
340 *******************************************************************************/
341 tAVDT_CCB *avdt_ccb_by_bd(BD_ADDR bd_addr)
343 tAVDT_CCB *p_ccb = &avdt_cb.ccb[0];
346 for (i = 0; i < AVDT_NUM_LINKS; i++, p_ccb++)
348 /* if allocated ccb has matching ccb */
349 if (p_ccb->allocated && (!memcmp(p_ccb->peer_addr, bd_addr, BD_ADDR_LEN)))
355 if (i == AVDT_NUM_LINKS)
357 /* if no ccb found */
360 AVDT_TRACE_DEBUG("No ccb for addr %02x-%02x-%02x-%02x-%02x-%02x",
361 bd_addr[0], bd_addr[1], bd_addr[2], bd_addr[3], bd_addr[4], bd_addr[5]);
366 /*******************************************************************************
368 ** Function avdt_ccb_alloc
370 ** Description Allocate a channel control block.
373 ** Returns pointer to the ccb, or NULL if none could be allocated.
375 *******************************************************************************/
376 tAVDT_CCB *avdt_ccb_alloc(BD_ADDR bd_addr)
378 tAVDT_CCB *p_ccb = &avdt_cb.ccb[0];
381 for (i = 0; i < AVDT_NUM_LINKS; i++, p_ccb++)
383 if (!p_ccb->allocated)
385 p_ccb->allocated = TRUE;
386 memcpy(p_ccb->peer_addr, bd_addr, BD_ADDR_LEN);
387 p_ccb->cmd_q = fixed_queue_new(SIZE_MAX);
388 p_ccb->rsp_q = fixed_queue_new(SIZE_MAX);
389 p_ccb->idle_ccb_timer = alarm_new("avdt_ccb.idle_ccb_timer");
390 p_ccb->ret_ccb_timer = alarm_new("avdt_ccb.ret_ccb_timer");
391 p_ccb->rsp_ccb_timer = alarm_new("avdt_ccb.rsp_ccb_timer");
392 AVDT_TRACE_DEBUG("avdt_ccb_alloc %d", i);
397 if (i == AVDT_NUM_LINKS)
401 AVDT_TRACE_WARNING("Out of ccbs");
406 /*******************************************************************************
408 ** Function avdt_ccb_dealloc
410 ** Description Deallocate a stream control block.
415 *******************************************************************************/
416 void avdt_ccb_dealloc(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data)
420 AVDT_TRACE_DEBUG("avdt_ccb_dealloc %d", avdt_ccb_to_idx(p_ccb));
421 alarm_free(p_ccb->idle_ccb_timer);
422 alarm_free(p_ccb->ret_ccb_timer);
423 alarm_free(p_ccb->rsp_ccb_timer);
424 fixed_queue_free(p_ccb->cmd_q, NULL);
425 fixed_queue_free(p_ccb->rsp_q, NULL);
426 memset(p_ccb, 0, sizeof(tAVDT_CCB));
429 /*******************************************************************************
431 ** Function avdt_ccb_to_idx
433 ** Description Given a pointer to an ccb, return its index.
436 ** Returns Index of ccb.
438 *******************************************************************************/
439 UINT8 avdt_ccb_to_idx(tAVDT_CCB *p_ccb)
441 /* use array arithmetic to determine index */
442 return (UINT8) (p_ccb - avdt_cb.ccb);
445 /*******************************************************************************
447 ** Function avdt_ccb_by_idx
449 ** Description Return ccb pointer based on ccb index.
452 ** Returns pointer to the ccb, or NULL if none found.
454 *******************************************************************************/
455 tAVDT_CCB *avdt_ccb_by_idx(UINT8 idx)
460 if (idx < AVDT_NUM_LINKS)
462 p_ccb = &avdt_cb.ccb[idx];
467 AVDT_TRACE_WARNING("No ccb for idx %d", idx);