/****************************************************************************** * * Copyright (C) 2006-2012 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 action functions associated with the channel * control block state machine. * ******************************************************************************/ #include <string.h> #include "stack/bt_types.h" #include "common/bt_target.h" #include "common/bt_defs.h" #include "stack/avdt_api.h" #include "stack/avdtc_api.h" #include "avdt_int.h" #include "stack/btu.h" #include "stack/btm_api.h" #include "osi/allocator.h" #if (defined(AVDT_INCLUDED) && AVDT_INCLUDED == TRUE) /******************************************************************************* ** ** Function avdt_ccb_clear_ccb ** ** Description This function clears out certain buffers, queues, and ** other data elements of a ccb. ** ** ** Returns void. ** *******************************************************************************/ static void avdt_ccb_clear_ccb(tAVDT_CCB *p_ccb) { BT_HDR *p_buf; /* clear certain ccb variables */ p_ccb->cong = FALSE; p_ccb->ret_count = 0; /* free message being fragmented */ if (p_ccb->p_curr_msg != NULL) { osi_free(p_ccb->p_curr_msg); p_ccb->p_curr_msg = NULL; } /* free message being reassembled */ if (p_ccb->p_rx_msg != NULL) { osi_free(p_ccb->p_rx_msg); p_ccb->p_rx_msg = NULL; } /* clear out response queue */ while ((p_buf = (BT_HDR *) fixed_queue_try_dequeue(p_ccb->rsp_q)) != NULL) { osi_free(p_buf); } } /******************************************************************************* ** ** Function avdt_ccb_chan_open ** ** Description This function calls avdt_ad_open_req() to ** initiate a signaling channel connection. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_chan_open(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { UNUSED(p_data); BTM_SetOutService(p_ccb->peer_addr, BTM_SEC_SERVICE_AVDTP, AVDT_CHAN_SIG); avdt_ad_open_req(AVDT_CHAN_SIG, p_ccb, NULL, AVDT_INT); } /******************************************************************************* ** ** Function avdt_ccb_chan_close ** ** Description This function calls avdt_ad_close_req() to close a ** signaling channel connection. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_chan_close(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { UNUSED(p_data); /* close the transport channel used by this CCB */ avdt_ad_close_req(AVDT_CHAN_SIG, p_ccb, NULL); } /******************************************************************************* ** ** Function avdt_ccb_chk_close ** ** Description This function checks for active streams on this CCB. ** If there are none, it starts an idle timer. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_chk_close(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { int i; tAVDT_SCB *p_scb = &avdt_cb.scb[0]; UNUSED(p_data); /* see if there are any active scbs associated with this ccb */ for (i = 0; i < AVDT_NUM_SEPS; i++, p_scb++) { if ((p_scb->allocated) && (p_scb->p_ccb == p_ccb)) { break; } } /* if no active scbs start idle timer */ if (i == AVDT_NUM_SEPS) { btu_start_timer(&p_ccb->timer_entry, BTU_TTYPE_AVDT_CCB_IDLE, avdt_cb.rcb.idle_tout); } } /******************************************************************************* ** ** Function avdt_ccb_hdl_discover_cmd ** ** Description This function is called when a discover command is ** received from the peer. It gathers up the stream ** information for all allocated streams and initiates ** sending of a discover response. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_hdl_discover_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { tAVDT_SEP_INFO sep_info[AVDT_NUM_SEPS]; tAVDT_SCB *p_scb = &avdt_cb.scb[0]; int i; p_data->msg.discover_rsp.p_sep_info = sep_info; p_data->msg.discover_rsp.num_seps = 0; /* for all allocated scbs */ for (i = 0; i < AVDT_NUM_SEPS; i++, p_scb++) { if (p_scb->allocated) { /* copy sep info */ sep_info[p_data->msg.discover_rsp.num_seps].in_use = p_scb->in_use; sep_info[p_data->msg.discover_rsp.num_seps].seid = i + 1; sep_info[p_data->msg.discover_rsp.num_seps].media_type = p_scb->cs.media_type; sep_info[p_data->msg.discover_rsp.num_seps].tsep = p_scb->cs.tsep; p_data->msg.discover_rsp.num_seps++; } } /* send response */ avdt_ccb_event(p_ccb, AVDT_CCB_API_DISCOVER_RSP_EVT, p_data); } /******************************************************************************* ** ** Function avdt_ccb_hdl_discover_rsp ** ** Description This function is called when a discover response or ** reject is received from the peer. It calls the application ** callback function with the results. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_hdl_discover_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { /* we're done with procedure */ p_ccb->proc_busy = FALSE; /* call app callback with results */ (*p_ccb->proc_cback)(0, p_ccb->peer_addr, AVDT_DISCOVER_CFM_EVT, (tAVDT_CTRL *)(&p_data->msg.discover_rsp)); } /******************************************************************************* ** ** Function avdt_ccb_hdl_getcap_cmd ** ** Description This function is called when a get capabilities command ** is received from the peer. It retrieves the stream ** configuration for the requested stream and initiates ** sending of a get capabilities response. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_hdl_getcap_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { tAVDT_SCB *p_scb; /* look up scb for seid sent to us */ p_scb = avdt_scb_by_hdl(p_data->msg.single.seid); p_data->msg.svccap.p_cfg = &p_scb->cs.cfg; avdt_ccb_event(p_ccb, AVDT_CCB_API_GETCAP_RSP_EVT, p_data); } /******************************************************************************* ** ** Function avdt_ccb_hdl_getcap_rsp ** ** Description This function is called with a get capabilities response ** or reject is received from the peer. It calls the ** application callback function with the results. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_hdl_getcap_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { /* we're done with procedure */ p_ccb->proc_busy = FALSE; /* call app callback with results */ (*p_ccb->proc_cback)(0, p_ccb->peer_addr, AVDT_GETCAP_CFM_EVT, (tAVDT_CTRL *)(&p_data->msg.svccap)); } /******************************************************************************* ** ** Function avdt_ccb_hdl_start_cmd ** ** Description This function is called when a start command is received ** from the peer. It verifies that all requested streams ** are in the proper state. If so, it initiates sending of ** a start response. Otherwise it sends a start reject. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_hdl_start_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { UINT8 err_code = 0; /* verify all streams in the right state */ UINT8 seid = avdt_scb_verify(p_ccb, AVDT_VERIFY_START, p_data->msg.multi.seid_list, p_data->msg.multi.num_seps, &err_code); if (seid == 0 && err_code == 0) { /* we're ok, send response */ avdt_ccb_event(p_ccb, AVDT_CCB_API_START_RSP_EVT, p_data); } else { /* not ok, send reject */ p_data->msg.hdr.err_code = err_code; p_data->msg.hdr.err_param = seid; avdt_msg_send_rej(p_ccb, AVDT_SIG_START, &p_data->msg); } } /******************************************************************************* ** ** Function avdt_ccb_hdl_start_rsp ** ** Description This function is called when a start response or reject ** is received from the peer. Using the SEIDs stored in the ** current command message, it sends a start response or start ** reject event to each SCB associated with the command. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_hdl_start_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { UINT8 event; int i; UINT8 *p; tAVDT_SCB *p_scb; /* determine rsp or rej event */ event = (p_data->msg.hdr.err_code == 0) ? AVDT_SCB_MSG_START_RSP_EVT : AVDT_SCB_MSG_START_REJ_EVT; /* get to where seid's are stashed in current cmd */ p = (UINT8 *)(p_ccb->p_curr_cmd + 1); /* little trick here; length of current command equals number of streams */ for (i = 0; i < p_ccb->p_curr_cmd->len; i++) { if ((p_scb = avdt_scb_by_hdl(p[i])) != NULL) { avdt_scb_event(p_scb, event, (tAVDT_SCB_EVT *) &p_data->msg); } } } /******************************************************************************* ** ** Function avdt_ccb_hdl_suspend_cmd ** ** Description This function is called when a suspend command is received ** from the peer. It verifies that all requested streams are ** in the proper state. If so, it initiates sending of a ** suspend response. Otherwise it sends a suspend reject. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_hdl_suspend_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { UINT8 seid; UINT8 err_code = 0; /* verify all streams in the right state */ if ((seid = avdt_scb_verify(p_ccb, AVDT_VERIFY_SUSPEND, p_data->msg.multi.seid_list, p_data->msg.multi.num_seps, &err_code)) == 0 && err_code == 0) { /* we're ok, send response */ avdt_ccb_event(p_ccb, AVDT_CCB_API_SUSPEND_RSP_EVT, p_data); } else { /* not ok, send reject */ p_data->msg.hdr.err_code = err_code; p_data->msg.hdr.err_param = seid; avdt_msg_send_rej(p_ccb, AVDT_SIG_SUSPEND, &p_data->msg); } } /******************************************************************************* ** ** Function avdt_ccb_hdl_suspend_rsp ** ** Description This function is called when a suspend response or reject ** is received from the peer. Using the SEIDs stored in the ** current command message, it sends a suspend response or ** suspend reject event to each SCB associated with the command. ** ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_hdl_suspend_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { UINT8 event; int i; UINT8 *p; tAVDT_SCB *p_scb; /* determine rsp or rej event */ event = (p_data->msg.hdr.err_code == 0) ? AVDT_SCB_MSG_SUSPEND_RSP_EVT : AVDT_SCB_MSG_SUSPEND_REJ_EVT; /* get to where seid's are stashed in current cmd */ p = (UINT8 *)(p_ccb->p_curr_cmd + 1); /* little trick here; length of current command equals number of streams */ for (i = 0; i < p_ccb->p_curr_cmd->len; i++) { if ((p_scb = avdt_scb_by_hdl(p[i])) != NULL) { avdt_scb_event(p_scb, event, (tAVDT_SCB_EVT *) &p_data->msg); } } } /******************************************************************************* ** ** Function avdt_ccb_snd_discover_cmd ** ** Description This function is called to send a discover command to the ** peer. It copies variables needed for the procedure from ** the event to the CCB. It marks the CCB as busy and then ** sends a discover command. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_snd_discover_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { /* store info in ccb struct */ p_ccb->p_proc_data = p_data->discover.p_sep_info; p_ccb->proc_cback = p_data->discover.p_cback; p_ccb->proc_param = p_data->discover.num_seps; /* we're busy */ p_ccb->proc_busy = TRUE; /* build and queue discover req */ avdt_msg_send_cmd(p_ccb, NULL, AVDT_SIG_DISCOVER, NULL); } /******************************************************************************* ** ** Function avdt_ccb_snd_discover_rsp ** ** Description This function is called to send a discover response to ** the peer. It takes the stream information passed in the ** event and sends a discover response. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_snd_discover_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { /* send response */ avdt_msg_send_rsp(p_ccb, AVDT_SIG_DISCOVER, &p_data->msg); } /******************************************************************************* ** ** Function avdt_ccb_snd_getcap_cmd ** ** Description This function is called to send a get capabilities command ** to the peer. It copies variables needed for the procedure ** from the event to the CCB. It marks the CCB as busy and ** then sends a get capabilities command. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_snd_getcap_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { UINT8 sig_id = AVDT_SIG_GETCAP; /* store info in ccb struct */ p_ccb->p_proc_data = p_data->getcap.p_cfg; p_ccb->proc_cback = p_data->getcap.p_cback; /* we're busy */ p_ccb->proc_busy = TRUE; /* build and queue discover req */ if (p_data->msg.hdr.sig_id == AVDT_SIG_GET_ALLCAP) { sig_id = AVDT_SIG_GET_ALLCAP; } avdt_msg_send_cmd(p_ccb, NULL, sig_id, (tAVDT_MSG *) &p_data->getcap.single); } /******************************************************************************* ** ** Function avdt_ccb_snd_getcap_rsp ** ** Description This function is called to send a get capabilities response ** to the peer. It takes the stream information passed in the ** event and sends a get capabilities response. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_snd_getcap_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { UINT8 sig_id = AVDT_SIG_GETCAP; if (p_data->msg.hdr.sig_id == AVDT_SIG_GET_ALLCAP) { sig_id = AVDT_SIG_GET_ALLCAP; } /* send response */ avdt_msg_send_rsp(p_ccb, sig_id, &p_data->msg); } /******************************************************************************* ** ** Function avdt_ccb_snd_start_cmd ** ** Description This function is called to send a start command to the ** peer. It verifies that all requested streams are in the ** proper state. If so, it sends a start command. Otherwise ** send ourselves back a start reject. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_snd_start_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { int i; tAVDT_SCB *p_scb; tAVDT_MSG avdt_msg; UINT8 seid_list[AVDT_NUM_SEPS]; /* make copy of our seid list */ memcpy(seid_list, p_data->msg.multi.seid_list, p_data->msg.multi.num_seps); /* verify all streams in the right state */ if ((avdt_msg.hdr.err_param = avdt_scb_verify(p_ccb, AVDT_VERIFY_OPEN, p_data->msg.multi.seid_list, p_data->msg.multi.num_seps, &avdt_msg.hdr.err_code)) == 0) { /* set peer seid list in messsage */ avdt_scb_peer_seid_list(&p_data->msg.multi); /* send command */ avdt_msg_send_cmd(p_ccb, seid_list, AVDT_SIG_START, &p_data->msg); } else { /* failed; send ourselves a reject for each stream */ for (i = 0; i < p_data->msg.multi.num_seps; i++) { if ((p_scb = avdt_scb_by_hdl(seid_list[i])) != NULL) { avdt_scb_event(p_scb, AVDT_SCB_MSG_START_REJ_EVT, (tAVDT_SCB_EVT *) &avdt_msg.hdr); } } } } /******************************************************************************* ** ** Function avdt_ccb_snd_start_rsp ** ** Description This function is called to send a start response to the ** peer. It takes the stream information passed in the event ** and sends a start response. Then it sends a start event ** to the SCB for each stream. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_snd_start_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { tAVDT_SCB *p_scb; int i; /* send response message */ avdt_msg_send_rsp(p_ccb, AVDT_SIG_START, &p_data->msg); /* send start event to each scb */ for (i = 0; i < p_data->msg.multi.num_seps; i++) { if ((p_scb = avdt_scb_by_hdl(p_data->msg.multi.seid_list[i])) != NULL) { avdt_scb_event(p_scb, AVDT_SCB_MSG_START_CMD_EVT, NULL); } } } /******************************************************************************* ** ** Function avdt_ccb_snd_suspend_cmd ** ** Description This function is called to send a suspend command to the ** peer. It verifies that all requested streams are in the ** proper state. If so, it sends a suspend command. ** Otherwise it calls the callback function for each requested ** stream and sends a suspend confirmation with failure. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_snd_suspend_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { int i; tAVDT_SCB *p_scb; tAVDT_MSG avdt_msg; UINT8 seid_list[AVDT_NUM_SEPS]; /* make copy of our seid list */ memcpy(seid_list, p_data->msg.multi.seid_list, p_data->msg.multi.num_seps); /* verify all streams in the right state */ if ((avdt_msg.hdr.err_param = avdt_scb_verify(p_ccb, AVDT_VERIFY_STREAMING, p_data->msg.multi.seid_list, p_data->msg.multi.num_seps, &avdt_msg.hdr.err_code)) == 0) { /* set peer seid list in messsage */ avdt_scb_peer_seid_list(&p_data->msg.multi); /* send command */ avdt_msg_send_cmd(p_ccb, seid_list, AVDT_SIG_SUSPEND, &p_data->msg); } else { /* failed; send ourselves a reject for each stream */ for (i = 0; i < p_data->msg.multi.num_seps; i++) { if ((p_scb = avdt_scb_by_hdl(seid_list[i])) != NULL) { avdt_scb_event(p_scb, AVDT_SCB_MSG_SUSPEND_REJ_EVT, (tAVDT_SCB_EVT *) &avdt_msg.hdr); } } } } /******************************************************************************* ** ** Function avdt_ccb_snd_suspend_rsp ** ** Description This function is called to send a suspend response to the ** peer. It takes the stream information passed in the event ** and sends a suspend response. Then it sends a suspend event ** to the SCB for each stream. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_snd_suspend_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { tAVDT_SCB *p_scb; int i; /* send response message */ avdt_msg_send_rsp(p_ccb, AVDT_SIG_SUSPEND, &p_data->msg); /* send start event to each scb */ for (i = 0; i < p_data->msg.multi.num_seps; i++) { if ((p_scb = avdt_scb_by_hdl(p_data->msg.multi.seid_list[i])) != NULL) { avdt_scb_event(p_scb, AVDT_SCB_MSG_SUSPEND_CMD_EVT, NULL); } } } /******************************************************************************* ** ** Function avdt_ccb_clear_cmds ** ** Description This function is called when the signaling channel is ** closed to clean up any pending commands. For each pending ** command in the command queue, it frees the command and ** calls the application callback function indicating failure. ** Certain CCB variables are also initialized. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_clear_cmds(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { int i; tAVDT_SCB *p_scb = &avdt_cb.scb[0]; UINT8 err_code = AVDT_ERR_CONNECT; UNUSED(p_data); /* clear the ccb */ avdt_ccb_clear_ccb(p_ccb); /* clear out command queue; this is a little tricky here; we need ** to handle the case where there is a command on deck in p_curr_cmd, ** plus we need to clear out the queue */ do { /* we know p_curr_cmd = NULL after this */ avdt_ccb_cmd_fail(p_ccb, (tAVDT_CCB_EVT *) &err_code); /* set up next message */ p_ccb->p_curr_cmd = (BT_HDR *) fixed_queue_try_dequeue(p_ccb->cmd_q); } while (p_ccb->p_curr_cmd != NULL); /* send a CC_CLOSE_EVT any active scbs associated with this ccb */ for (i = 0; i < AVDT_NUM_SEPS; i++, p_scb++) { if ((p_scb->allocated) && (p_scb->p_ccb == p_ccb)) { avdt_scb_event(p_scb, AVDT_SCB_CC_CLOSE_EVT, NULL); } } } /******************************************************************************* ** ** Function avdt_ccb_cmd_fail ** ** Description This function is called when there is a response timeout. ** The currently pending command is freed and we fake a ** reject message back to ourselves. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_cmd_fail(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { tAVDT_MSG msg; UINT8 evt; tAVDT_SCB *p_scb; if (p_ccb->p_curr_cmd != NULL) { /* set up data */ msg.hdr.err_code = p_data->err_code; msg.hdr.err_param = 0; msg.hdr.ccb_idx = avdt_ccb_to_idx(p_ccb); /* pretend that we received a rej message */ evt = avdt_msg_rej_2_evt[p_ccb->p_curr_cmd->event - 1]; if (evt & AVDT_CCB_MKR) { avdt_ccb_event(p_ccb, (UINT8) (evt & ~AVDT_CCB_MKR), (tAVDT_CCB_EVT *) &msg); } else { /* we get the scb out of the current cmd */ p_scb = avdt_scb_by_hdl(*((UINT8 *)(p_ccb->p_curr_cmd + 1))); if (p_scb != NULL) { avdt_scb_event(p_scb, evt, (tAVDT_SCB_EVT *) &msg); } } osi_free(p_ccb->p_curr_cmd); p_ccb->p_curr_cmd = NULL; } } /******************************************************************************* ** ** Function avdt_ccb_free_cmd ** ** Description This function is called when a response is received for a ** currently pending command. The command is freed. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_free_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { UNUSED(p_data); if (p_ccb->p_curr_cmd != NULL) { osi_free(p_ccb->p_curr_cmd); p_ccb->p_curr_cmd = NULL; } } /******************************************************************************* ** ** Function avdt_ccb_cong_state ** ** Description This function is called to set the congestion state for ** the CCB. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_cong_state(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { p_ccb->cong = p_data->llcong; } /******************************************************************************* ** ** Function avdt_ccb_ret_cmd ** ** Description This function is called to retransmit the currently ** pending command. The retransmission count is incremented. ** If the count reaches the maximum number of retransmissions, ** the event is treated as a response timeout. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_ret_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { UINT8 err_code = AVDT_ERR_TIMEOUT; BT_HDR *p_msg; p_ccb->ret_count++; if (p_ccb->ret_count == AVDT_RET_MAX) { /* command failed */ p_ccb->ret_count = 0; avdt_ccb_cmd_fail(p_ccb, (tAVDT_CCB_EVT *) &err_code); /* go to next queued command */ avdt_ccb_snd_cmd(p_ccb, p_data); } else { /* if command pending and we're not congested and not sending a fragment */ if ((!p_ccb->cong) && (p_ccb->p_curr_msg == NULL) && (p_ccb->p_curr_cmd != NULL)) { /* make copy of message in p_curr_cmd and send it */ if ((p_msg = (BT_HDR *) osi_malloc(AVDT_CMD_BUF_SIZE)) != NULL) { memcpy(p_msg, p_ccb->p_curr_cmd, (sizeof(BT_HDR) + p_ccb->p_curr_cmd->offset + p_ccb->p_curr_cmd->len)); avdt_msg_send(p_ccb, p_msg); } } /* restart timer */ btu_start_timer(&p_ccb->timer_entry, BTU_TTYPE_AVDT_CCB_RET, avdt_cb.rcb.ret_tout); } } /******************************************************************************* ** ** Function avdt_ccb_snd_cmd ** ** Description This function is called the send the next command, ** if any, in the command queue. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_snd_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { BT_HDR *p_msg; UNUSED(p_data); /* do we have commands to send? send next command; make sure we're clear; ** not congested, not sending fragment, not waiting for response */ if ((!p_ccb->cong) && (p_ccb->p_curr_msg == NULL) && (p_ccb->p_curr_cmd == NULL)) { if ((p_msg = (BT_HDR *) fixed_queue_try_dequeue(p_ccb->cmd_q)) != NULL) { /* make a copy of buffer in p_curr_cmd */ if ((p_ccb->p_curr_cmd = (BT_HDR *) osi_malloc(AVDT_CMD_BUF_SIZE)) != NULL) { memcpy(p_ccb->p_curr_cmd, p_msg, (sizeof(BT_HDR) + p_msg->offset + p_msg->len)); avdt_msg_send(p_ccb, p_msg); } } } } /******************************************************************************* ** ** Function avdt_ccb_snd_msg ** ** Description ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_snd_msg(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { BT_HDR *p_msg; UNUSED(p_data); /* if not congested */ if (!p_ccb->cong) { /* are we sending a fragmented message? continue sending fragment */ if (p_ccb->p_curr_msg != NULL) { avdt_msg_send(p_ccb, NULL); } /* do we have responses to send? send them */ else if (!fixed_queue_is_empty(p_ccb->rsp_q)) { while ((p_msg = (BT_HDR *)fixed_queue_try_dequeue(p_ccb->rsp_q)) != NULL) { if (avdt_msg_send(p_ccb, p_msg) == TRUE) { /* break out if congested */ break; } } } /* do we have commands to send? send next command */ avdt_ccb_snd_cmd(p_ccb, NULL); } } /******************************************************************************* ** ** Function avdt_ccb_set_reconn ** ** Description This function is called to enable a reconnect attempt when ** a channel transitions from closing to idle state. It sets ** the reconn variable to TRUE. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_set_reconn(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { UNUSED(p_data); p_ccb->reconn = TRUE; } /******************************************************************************* ** ** Function avdt_ccb_clr_reconn ** ** Description This function is called to clear the reconn variable. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_clr_reconn(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { UNUSED(p_data); p_ccb->reconn = FALSE; } /******************************************************************************* ** ** Function avdt_ccb_chk_reconn ** ** Description This function is called to check if a reconnect attempt ** is enabled. If enabled, it sends an AVDT_CCB_UL_OPEN_EVT ** to the CCB. If disabled, the CCB is deallocated. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_chk_reconn(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { UINT8 err_code = AVDT_ERR_CONNECT; UNUSED(p_data); if (p_ccb->reconn) { p_ccb->reconn = FALSE; /* clear out ccb */ avdt_ccb_clear_ccb(p_ccb); /* clear out current command, if any */ avdt_ccb_cmd_fail(p_ccb, (tAVDT_CCB_EVT *) &err_code); /* reopen the signaling channel */ avdt_ccb_event(p_ccb, AVDT_CCB_UL_OPEN_EVT, NULL); } else { avdt_ccb_ll_closed(p_ccb, NULL); } } /******************************************************************************* ** ** Function avdt_ccb_chk_timer ** ** Description This function stops the CCB timer if the idle timer is ** running. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_chk_timer(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { UNUSED(p_data); if (p_ccb->timer_entry.event == BTU_TTYPE_AVDT_CCB_IDLE) { btu_stop_timer(&p_ccb->timer_entry); } } /******************************************************************************* ** ** Function avdt_ccb_set_conn ** ** Description Set CCB variables associated with AVDT_ConnectReq(). ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_set_conn(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { /* save callback */ p_ccb->p_conn_cback = p_data->connect.p_cback; /* set security level */ BTM_SetSecurityLevel(TRUE, "", BTM_SEC_SERVICE_AVDTP, p_data->connect.sec_mask, AVDT_PSM, BTM_SEC_PROTO_AVDT, AVDT_CHAN_SIG); } /******************************************************************************* ** ** Function avdt_ccb_set_disconn ** ** Description Set CCB variables associated with AVDT_DisconnectReq(). ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_set_disconn(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { /* AVDT_TRACE_EVENT("avdt_ccb_set_disconn:conn:x%x, api:x%x", p_ccb->p_conn_cback, p_data->disconnect.p_cback); */ /* save callback */ if (p_data->disconnect.p_cback) { p_ccb->p_conn_cback = p_data->disconnect.p_cback; } } /******************************************************************************* ** ** Function avdt_ccb_do_disconn ** ** Description Do action associated with AVDT_DisconnectReq(). ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_do_disconn(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { UNUSED(p_data); /* clear any pending commands */ avdt_ccb_clear_cmds(p_ccb, NULL); /* close channel */ avdt_ccb_chan_close(p_ccb, NULL); } /******************************************************************************* ** ** Function avdt_ccb_ll_closed ** ** Description Clear commands from and deallocate CCB. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_ll_closed(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { tAVDT_CTRL_CBACK *p_cback; BD_ADDR bd_addr; tAVDT_CTRL avdt_ctrl; UINT8 disc_rsn; UNUSED(p_data); /* clear any pending commands */ avdt_ccb_clear_cmds(p_ccb, NULL); /* save callback pointer, bd addr */ p_cback = p_ccb->p_conn_cback; if (!p_cback) { p_cback = avdt_cb.p_conn_cback; } memcpy(bd_addr, p_ccb->peer_addr, BD_ADDR_LEN); disc_rsn = p_ccb->disc_rsn; /* dealloc ccb */ avdt_ccb_dealloc(p_ccb, NULL); /* call callback */ if (p_cback) { avdt_ctrl.hdr.err_code = 0; avdt_ctrl.hdr.err_param = disc_rsn; (*p_cback)(0, bd_addr, AVDT_DISCONNECT_IND_EVT, &avdt_ctrl); } } /******************************************************************************* ** ** Function avdt_ccb_ll_opened ** ** Description Call callback on open. ** ** ** Returns void. ** *******************************************************************************/ void avdt_ccb_ll_opened(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) { tAVDT_CTRL avdt_ctrl; p_ccb->ll_opened = TRUE; if (!p_ccb->p_conn_cback) { p_ccb->p_conn_cback = avdt_cb.p_conn_cback; } /* call callback */ if (p_ccb->p_conn_cback) { avdt_ctrl.hdr.err_code = 0; avdt_ctrl.hdr.err_param = p_data->msg.hdr.err_param; (*p_ccb->p_conn_cback)(0, p_ccb->peer_addr, AVDT_CONNECT_IND_EVT, &avdt_ctrl); } } #endif /* #if (defined(AVDT_INCLUDED) && AVDT_INCLUDED == TRUE) */