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PL286/system/bt/stack/avdt/avdt_scb_act.cc

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/******************************************************************************
*
* 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 action functions associated with the stream
* control block state machine.
*
******************************************************************************/
#include <string.h>
#include "a2dp_codec_api.h"
#include "avdt_api.h"
#include "avdt_int.h"
#include "avdtc_api.h"
#include "bt_common.h"
#include "bt_target.h"
#include "bt_types.h"
#include "bt_utils.h"
#include "btu.h"
#include "osi/include/osi.h"
/* This table is used to lookup the callback event that matches a particular
* state machine API request event. Note that state machine API request
* events are at the beginning of the event list starting at zero, thus
* allowing for this table.
*/
const uint8_t avdt_scb_cback_evt[] = {
0, /* API_REMOVE_EVT (no event) */
AVDT_WRITE_CFM_EVT, /* API_WRITE_REQ_EVT */
0, /* API_GETCONFIG_REQ_EVT (no event) */
0, /* API_DELAY_RPT_REQ_EVT (no event) */
AVDT_OPEN_CFM_EVT, /* API_SETCONFIG_REQ_EVT */
AVDT_OPEN_CFM_EVT, /* API_OPEN_REQ_EVT */
AVDT_CLOSE_CFM_EVT, /* API_CLOSE_REQ_EVT */
AVDT_RECONFIG_CFM_EVT, /* API_RECONFIG_REQ_EVT */
AVDT_SECURITY_CFM_EVT, /* API_SECURITY_REQ_EVT */
0 /* API_ABORT_REQ_EVT (no event) */
};
/*******************************************************************************
*
* Function avdt_scb_gen_ssrc
*
* Description This function generates a SSRC number unique to the stream.
*
* Returns SSRC value.
*
******************************************************************************/
uint32_t avdt_scb_gen_ssrc(tAVDT_SCB* p_scb) {
/* combine the value of the media type and codec type of the SCB */
return (
(uint32_t)(p_scb->cs.cfg.codec_info[1] | p_scb->cs.cfg.codec_info[2]));
}
/*******************************************************************************
*
* Function avdt_scb_hdl_abort_cmd
*
* Description This function sends the SCB an AVDT_SCB_API_ABORT_RSP_EVT
* to initiate sending of an abort response message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_abort_cmd(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
p_scb->role = AVDT_CLOSE_ACP;
avdt_scb_event(p_scb, AVDT_SCB_API_ABORT_RSP_EVT, p_data);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_abort_rsp
*
* Description This function is an empty function; it serves as a
* placeholder for a conformance API action function.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_abort_rsp(UNUSED_ATTR tAVDT_SCB* p_scb,
UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
return;
}
/*******************************************************************************
*
* Function avdt_scb_hdl_close_cmd
*
* Description This function sends the SCB an AVDT_SCB_API_CLOSE_RSP_EVT
* to initiate sending of a close response message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_close_cmd(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
p_scb->role = AVDT_CLOSE_ACP;
avdt_scb_event(p_scb, AVDT_SCB_API_CLOSE_RSP_EVT, p_data);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_close_rsp
*
* Description This function sets the close_code variable to the error
* code returned in the close response.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_close_rsp(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
p_scb->close_code = p_data->msg.hdr.err_code;
}
/*******************************************************************************
*
* Function avdt_scb_hdl_getconfig_cmd
*
* Description This function retrieves the configuration parameters of
* the SCB and sends the SCB an AVDT_SCB_API_GETCONFIG_RSP_EVT
* to initiate sending of a get configuration response message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_getconfig_cmd(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
p_data->msg.svccap.p_cfg = &p_scb->curr_cfg;
avdt_scb_event(p_scb, AVDT_SCB_API_GETCONFIG_RSP_EVT, p_data);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_getconfig_rsp
*
* Description This function is an empty function; it serves as a
* placeholder for a conformance API action function.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_getconfig_rsp(UNUSED_ATTR tAVDT_SCB* p_scb,
UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
return;
}
/*******************************************************************************
*
* Function avdt_scb_hdl_open_cmd
*
* Description This function sends the SCB an AVDT_SCB_API_OPEN_RSP_EVT
* to initiate sending of an open response message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_open_cmd(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
avdt_scb_event(p_scb, AVDT_SCB_API_OPEN_RSP_EVT, p_data);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_open_rej
*
* Description This function calls the application callback function
* indicating the open request has failed. It initializes
* certain SCB variables and sends a AVDT_CCB_UL_CLOSE_EVT
* to the CCB.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_open_rej(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
/* do exactly same as setconfig reject */
avdt_scb_hdl_setconfig_rej(p_scb, p_data);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_open_rsp
*
* Description This function calls avdt_ad_open_req() to initiate
* connection of the transport channel for this stream.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_open_rsp(tAVDT_SCB* p_scb,
UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
/* initiate opening of trans channels for this SEID */
p_scb->role = AVDT_OPEN_INT;
avdt_ad_open_req(AVDT_CHAN_MEDIA, p_scb->p_ccb, p_scb, AVDT_INT);
/* start tc connect timer */
alarm_set_on_mloop(p_scb->transport_channel_timer,
AVDT_SCB_TC_CONN_TIMEOUT_MS,
avdt_scb_transport_channel_timer_timeout, p_scb);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_pkt_no_frag
*
* Description
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_pkt_no_frag(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
uint8_t *p, *p_start;
uint8_t o_v, o_p, o_x, o_cc;
uint8_t m_pt;
uint8_t marker;
uint16_t seq;
uint32_t time_stamp;
uint16_t offset;
uint16_t ex_len;
uint8_t pad_len = 0;
p = p_start = (uint8_t*)(p_data->p_pkt + 1) + p_data->p_pkt->offset;
/* parse media packet header */
AVDT_MSG_PRS_OCTET1(p, o_v, o_p, o_x, o_cc);
AVDT_MSG_PRS_M_PT(p, m_pt, marker);
BE_STREAM_TO_UINT16(seq, p);
BE_STREAM_TO_UINT32(time_stamp, p);
p += 4;
/* skip over any csrc's in packet */
p += o_cc * 4;
/* check for and skip over extension header */
if (o_x) {
p += 2;
BE_STREAM_TO_UINT16(ex_len, p);
p += ex_len * 4;
}
/* save our new offset */
offset = (uint16_t)(p - p_start);
/* adjust length for any padding at end of packet */
if (o_p) {
/* padding length in last byte of packet */
pad_len = *(p_start + p_data->p_pkt->len);
}
/* do sanity check */
if ((offset > p_data->p_pkt->len) ||
((pad_len + offset) > p_data->p_pkt->len)) {
AVDT_TRACE_WARNING("Got bad media packet");
osi_free_and_reset((void**)&p_data->p_pkt);
}
/* adjust offset and length and send it up */
else {
p_data->p_pkt->len -= (offset + pad_len);
p_data->p_pkt->offset += offset;
if (p_scb->cs.p_sink_data_cback != NULL) {
/* report sequence number */
p_data->p_pkt->layer_specific = seq;
(*p_scb->cs.p_sink_data_cback)(avdt_scb_to_hdl(p_scb), p_data->p_pkt,
time_stamp,
(uint8_t)(m_pt | (marker << 7)));
} else {
osi_free_and_reset((void**)&p_data->p_pkt);
}
}
}
#if (AVDT_REPORTING == TRUE)
/*******************************************************************************
*
* Function avdt_scb_hdl_report
*
* Description
*
* Returns Nothing.
*
******************************************************************************/
uint8_t* avdt_scb_hdl_report(tAVDT_SCB* p_scb, uint8_t* p, uint16_t len) {
uint16_t result = AVDT_SUCCESS;
uint8_t* p_start = p;
uint32_t ssrc;
uint8_t o_v, o_p, o_cc;
AVDT_REPORT_TYPE pt;
tAVDT_REPORT_DATA report;
AVDT_TRACE_DEBUG("%s", __func__);
if (p_scb->cs.p_report_cback) {
/* parse report packet header */
AVDT_MSG_PRS_RPT_OCTET1(p, o_v, o_p, o_cc);
pt = *p++;
p += 2;
BE_STREAM_TO_UINT32(ssrc, p);
switch (pt) {
case AVDT_RTCP_PT_SR: /* the packet type - SR (Sender Report) */
BE_STREAM_TO_UINT32(report.sr.ntp_sec, p);
BE_STREAM_TO_UINT32(report.sr.ntp_frac, p);
BE_STREAM_TO_UINT32(report.sr.rtp_time, p);
BE_STREAM_TO_UINT32(report.sr.pkt_count, p);
BE_STREAM_TO_UINT32(report.sr.octet_count, p);
break;
case AVDT_RTCP_PT_RR: /* the packet type - RR (Receiver Report) */
report.rr.frag_lost = *p;
BE_STREAM_TO_UINT32(report.rr.packet_lost, p);
report.rr.packet_lost &= 0xFFFFFF;
BE_STREAM_TO_UINT32(report.rr.seq_num_rcvd, p);
BE_STREAM_TO_UINT32(report.rr.jitter, p);
BE_STREAM_TO_UINT32(report.rr.lsr, p);
BE_STREAM_TO_UINT32(report.rr.dlsr, p);
break;
case AVDT_RTCP_PT_SDES: /* the packet type - SDES (Source Description) */
uint8_t sdes_type;
BE_STREAM_TO_UINT8(sdes_type, p);
if (sdes_type == AVDT_RTCP_SDES_CNAME) {
uint8_t name_length;
BE_STREAM_TO_UINT8(name_length, p);
if (name_length > len - 2 || name_length > AVDT_MAX_CNAME_SIZE) {
result = AVDT_BAD_PARAMS;
} else {
BE_STREAM_TO_ARRAY(p, &(report.cname[0]), name_length);
}
} else {
AVDT_TRACE_WARNING(" - SDES SSRC=0x%08x sc=%d %d len=%d %s", ssrc,
o_cc, *p, *(p + 1), p + 2);
result = AVDT_BUSY;
}
break;
default:
AVDT_TRACE_ERROR("Bad Report pkt - packet type: %d", pt);
result = AVDT_BAD_PARAMS;
}
if (result == AVDT_SUCCESS)
(*p_scb->cs.p_report_cback)(avdt_scb_to_hdl(p_scb), pt, &report);
}
p_start += len;
return p_start;
}
#endif
/*******************************************************************************
*
* Function avdt_scb_hdl_pkt
*
* Description
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_pkt(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
#if (AVDT_REPORTING == TRUE)
if (p_data->p_pkt->layer_specific == AVDT_CHAN_REPORT) {
uint8_t* p = (uint8_t*)(p_data->p_pkt + 1) + p_data->p_pkt->offset;
avdt_scb_hdl_report(p_scb, p, p_data->p_pkt->len);
osi_free_and_reset((void**)&p_data->p_pkt);
} else
#endif
avdt_scb_hdl_pkt_no_frag(p_scb, p_data);
}
/*******************************************************************************
*
* Function avdt_scb_drop_pkt
*
* Description Drop an incoming media packet. This function is called if
* a media packet is received in any state besides streaming.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_drop_pkt(UNUSED_ATTR tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
AVDT_TRACE_ERROR("%s dropped incoming media packet", __func__);
osi_free_and_reset((void**)&p_data->p_pkt);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_reconfig_cmd
*
* Description This function calls the application callback function
* with a reconfiguration indication.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_reconfig_cmd(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
/* if command not supported */
if (p_scb->cs.nsc_mask & AVDT_NSC_RECONFIG) {
/* send reject */
p_data->msg.hdr.err_code = AVDT_ERR_NSC;
p_data->msg.hdr.err_param = 0;
avdt_scb_event(p_scb, AVDT_SCB_API_RECONFIG_RSP_EVT, p_data);
} else {
/* store requested configuration */
memcpy(&p_scb->req_cfg, p_data->msg.reconfig_cmd.p_cfg, sizeof(tAVDT_CFG));
/* call application callback */
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb), NULL,
AVDT_RECONFIG_IND_EVT,
(tAVDT_CTRL*)&p_data->msg.reconfig_cmd);
}
}
/*******************************************************************************
*
* Function avdt_scb_hdl_reconfig_rsp
*
* Description This function calls the application callback function
* with a reconfiguration confirm.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_reconfig_rsp(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
if (p_data->msg.hdr.err_code == 0) {
/* store new configuration */
if (p_scb->req_cfg.num_codec > 0) {
p_scb->curr_cfg.num_codec = p_scb->req_cfg.num_codec;
memcpy(p_scb->curr_cfg.codec_info, p_scb->req_cfg.codec_info,
AVDT_CODEC_SIZE);
}
if (p_scb->req_cfg.num_protect > 0) {
p_scb->curr_cfg.num_protect = p_scb->req_cfg.num_protect;
memcpy(p_scb->curr_cfg.protect_info, p_scb->req_cfg.protect_info,
AVDT_PROTECT_SIZE);
}
}
p_data->msg.svccap.p_cfg = &p_scb->curr_cfg;
/* call application callback */
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb), NULL, AVDT_RECONFIG_CFM_EVT,
(tAVDT_CTRL*)&p_data->msg.svccap);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_security_cmd
*
* Description This function calls the application callback with a
* security indication.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_security_cmd(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
/* if command not supported */
if (p_scb->cs.nsc_mask & AVDT_NSC_SECURITY) {
/* send reject */
p_data->msg.hdr.err_code = AVDT_ERR_NSC;
avdt_scb_event(p_scb, AVDT_SCB_API_SECURITY_RSP_EVT, p_data);
} else {
/* call application callback */
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb), NULL,
AVDT_SECURITY_IND_EVT,
(tAVDT_CTRL*)&p_data->msg.security_cmd);
}
}
/*******************************************************************************
*
* Function avdt_scb_hdl_security_rsp
*
* Description This function calls the application callback with a
* security confirm.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_security_rsp(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
/* call application callback */
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb), NULL, AVDT_SECURITY_CFM_EVT,
(tAVDT_CTRL*)&p_data->msg.security_cmd);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_setconfig_cmd
*
* Description This function marks the SCB as in use and copies the
* configuration and peer SEID to the SCB. It then calls
* the application callback with a configuration indication.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_setconfig_cmd(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
tAVDT_CFG* p_cfg;
AVDT_TRACE_DEBUG("%s: p_scb->in_use=%d", __func__, p_scb->in_use);
if (!p_scb->in_use) {
A2DP_DumpCodecInfo(p_scb->cs.cfg.codec_info);
A2DP_DumpCodecInfo(p_data->msg.config_cmd.p_cfg->codec_info);
p_cfg = p_data->msg.config_cmd.p_cfg;
if (A2DP_GetCodecType(p_scb->cs.cfg.codec_info) ==
A2DP_GetCodecType(p_cfg->codec_info)) {
/* set sep as in use */
p_scb->in_use = true;
/* copy info to scb */
p_scb->p_ccb = avdt_ccb_by_idx(p_data->msg.config_cmd.hdr.ccb_idx);
p_scb->peer_seid = p_data->msg.config_cmd.int_seid;
memcpy(&p_scb->req_cfg, p_cfg, sizeof(tAVDT_CFG));
/* call app callback */
/* handle of scb- which is same as sep handle of bta_av_cb.p_scb*/
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb),
p_scb->p_ccb ? &p_scb->p_ccb->peer_addr : NULL,
AVDT_CONFIG_IND_EVT,
(tAVDT_CTRL*)&p_data->msg.config_cmd);
} else {
p_data->msg.hdr.err_code = AVDT_ERR_UNSUP_CFG;
p_data->msg.hdr.err_param = 0;
avdt_msg_send_rej(avdt_ccb_by_idx(p_data->msg.hdr.ccb_idx),
p_data->msg.hdr.sig_id, &p_data->msg);
}
} else {
AVDT_TRACE_DEBUG("%s: calling avdt_scb_rej_in_use()", __func__);
avdt_scb_rej_in_use(p_scb, p_data);
}
}
/*******************************************************************************
*
* Function avdt_scb_hdl_setconfig_rej
*
* Description This function marks the SCB as not in use and calls the
* application callback with an open confirm indicating
* failure.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_setconfig_rej(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
/* clear scb variables */
avdt_scb_clr_vars(p_scb, p_data);
/* tell ccb we're done with signaling channel */
avdt_ccb_event(avdt_ccb_by_idx(p_data->msg.hdr.ccb_idx),
AVDT_CCB_UL_CLOSE_EVT, NULL);
/* call application callback */
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb), NULL, AVDT_OPEN_CFM_EVT,
(tAVDT_CTRL*)&p_data->msg.hdr);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_setconfig_rsp
*
* Description This function sends the SCB an AVDT_SCB_API_OPEN_REQ_EVT
* to initiate sending of an open command message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_setconfig_rsp(tAVDT_SCB* p_scb,
UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
tAVDT_EVT_HDR single;
if (p_scb->p_ccb != NULL) {
/* save configuration */
memcpy(&p_scb->curr_cfg, &p_scb->req_cfg, sizeof(tAVDT_CFG));
/* initiate open */
single.seid = p_scb->peer_seid;
tAVDT_SCB_EVT avdt_scb_evt;
avdt_scb_evt.msg.single = single;
avdt_scb_event(p_scb, AVDT_SCB_API_OPEN_REQ_EVT, &avdt_scb_evt);
}
}
/*******************************************************************************
*
* Function avdt_scb_hdl_start_cmd
*
* Description This function calls the application callback with a
* start indication.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_start_cmd(tAVDT_SCB* p_scb,
UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb),
p_scb->p_ccb ? &p_scb->p_ccb->peer_addr : NULL,
AVDT_START_IND_EVT, NULL);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_start_rsp
*
* Description This function calls the application callback with a
* start confirm.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_start_rsp(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb),
p_scb->p_ccb ? &p_scb->p_ccb->peer_addr : NULL,
AVDT_START_CFM_EVT, (tAVDT_CTRL*)&p_data->msg.hdr);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_suspend_cmd
*
* Description This function calls the application callback with a suspend
* indication.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_suspend_cmd(tAVDT_SCB* p_scb,
UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb),
p_scb->p_ccb ? &p_scb->p_ccb->peer_addr : NULL,
AVDT_SUSPEND_IND_EVT, NULL);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_suspend_rsp
*
* Description This function calls the application callback with a suspend
* confirm.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_suspend_rsp(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
(*p_scb->cs.p_ctrl_cback)(
avdt_scb_to_hdl(p_scb), p_scb->p_ccb ? &p_scb->p_ccb->peer_addr : NULL,
AVDT_SUSPEND_CFM_EVT, (tAVDT_CTRL*)&p_data->msg.hdr);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_tc_close
*
* Description This function is called when the transport channel is
* closed. It marks the SCB as not in use and
* initializes certain SCB parameters. It then sends
* an AVDT_CCB_UL_CLOSE_EVT to the CCB if the SCB
* initiated the close. It then checks to see if the SCB
* is to be removed. If it is it deallocates the SCB.
* Finally, it calls the application callback with a close
* indication.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_tc_close(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
uint8_t hdl = avdt_scb_to_hdl(p_scb);
tAVDT_CTRL_CBACK* p_ctrl_cback = p_scb->cs.p_ctrl_cback;
tAVDT_CTRL avdt_ctrl;
uint8_t event;
tAVDT_CCB* p_ccb = p_scb->p_ccb;
RawAddress remote_addr = p_ccb->peer_addr;
/* set up hdr */
avdt_ctrl.hdr.err_code = p_scb->close_code;
/* clear sep variables */
avdt_scb_clr_vars(p_scb, p_data);
p_scb->media_seq = 0;
p_scb->cong = false;
/* free pkt we're holding, if any */
osi_free_and_reset((void**)&p_scb->p_pkt);
alarm_cancel(p_scb->transport_channel_timer);
if ((p_scb->role == AVDT_CLOSE_INT) || (p_scb->role == AVDT_OPEN_INT)) {
/* tell ccb we're done with signaling channel */
avdt_ccb_event(p_ccb, AVDT_CCB_UL_CLOSE_EVT, NULL);
}
event =
(p_scb->role == AVDT_CLOSE_INT) ? AVDT_CLOSE_CFM_EVT : AVDT_CLOSE_IND_EVT;
p_scb->role = AVDT_CLOSE_ACP;
if (p_scb->remove) {
avdt_scb_dealloc(p_scb, NULL);
}
/* call app callback */
(*p_ctrl_cback)(hdl, &remote_addr, event, &avdt_ctrl);
}
/*******************************************************************************
*
* Function avdt_scb_snd_delay_rpt_req
*
* Description This function calls the application callback with a delay
* report.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_delay_rpt_req(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
avdt_msg_send_cmd(p_scb->p_ccb, p_scb, AVDT_SIG_DELAY_RPT,
(tAVDT_MSG*)&p_data->apidelay);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_delay_rpt_cmd
*
* Description This function calls the application callback with a delay
* report.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_delay_rpt_cmd(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
(*p_scb->cs.p_ctrl_cback)(
avdt_scb_to_hdl(p_scb), p_scb->p_ccb ? &p_scb->p_ccb->peer_addr : NULL,
AVDT_DELAY_REPORT_EVT, (tAVDT_CTRL*)&p_data->msg.hdr);
if (p_scb->p_ccb)
avdt_msg_send_rsp(p_scb->p_ccb, AVDT_SIG_DELAY_RPT, &p_data->msg);
else
avdt_scb_rej_not_in_use(p_scb, p_data);
}
/*******************************************************************************
*
* Function avdt_scb_hdl_delay_rpt_rsp
*
* Description This function calls the application callback with a delay
* report.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_delay_rpt_rsp(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
(*p_scb->cs.p_ctrl_cback)(
avdt_scb_to_hdl(p_scb), p_scb->p_ccb ? &p_scb->p_ccb->peer_addr : NULL,
AVDT_DELAY_REPORT_CFM_EVT, (tAVDT_CTRL*)&p_data->msg.hdr);
}
#if (AVDT_REPORTING == TRUE)
/*******************************************************************************
*
* Function avdt_scb_hdl_tc_close_sto
*
* Description This function is called when a channel is closed in OPEN
* state. Check the channel type and process accordingly.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_tc_close_sto(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
tAVDT_CTRL avdt_ctrl;
/* AVDT_CHAN_SIG does not visit this action */
if (p_data && p_data->close.type != AVDT_CHAN_MEDIA) {
/* it's reporting or recovery channel,
* the channel close in open state means the peer does not support it */
if (p_data->close.old_tc_state == AVDT_AD_ST_OPEN) {
avdt_ctrl.hdr.err_code = 0;
avdt_ctrl.hdr.err_param = 0;
/* call app callback */
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb),
p_scb->p_ccb ? &p_scb->p_ccb->peer_addr : NULL,
AVDT_REPORT_DISCONN_EVT, &avdt_ctrl);
}
} else {
/* must be in OPEN state. need to go back to idle */
avdt_scb_event(p_scb, AVDT_SCB_MSG_ABORT_RSP_EVT, NULL);
avdt_scb_hdl_tc_close(p_scb, p_data);
}
}
#endif
/*******************************************************************************
*
* Function avdt_scb_hdl_tc_open
*
* Description This function is called when the transport channel is
* opened while in the opening state. It calls the
* application callback with an open indication or open
* confirm depending on who initiated the open procedure.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_tc_open(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
uint8_t event;
#if (AVDT_REPORTING == TRUE)
uint8_t role;
#endif
alarm_cancel(p_scb->transport_channel_timer);
event =
(p_scb->role == AVDT_OPEN_INT) ? AVDT_OPEN_CFM_EVT : AVDT_OPEN_IND_EVT;
p_data->open.hdr.err_code = 0;
AVDT_TRACE_DEBUG("psc_mask: cfg: 0x%x, req:0x%x, cur: 0x%x",
p_scb->cs.cfg.psc_mask, p_scb->req_cfg.psc_mask,
p_scb->curr_cfg.psc_mask);
#if (AVDT_REPORTING == TRUE)
if (p_scb->curr_cfg.psc_mask & AVDT_PSC_REPORT) {
/* open the reporting channel, if both devices support it */
role = (p_scb->role == AVDT_OPEN_INT) ? AVDT_INT : AVDT_ACP;
avdt_ad_open_req(AVDT_CHAN_REPORT, p_scb->p_ccb, p_scb, role);
}
#endif
/* call app callback */
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb),
p_scb->p_ccb ? &p_scb->p_ccb->peer_addr : NULL,
event, (tAVDT_CTRL*)&p_data->open);
}
#if (AVDT_REPORTING == TRUE)
/*******************************************************************************
*
* Function avdt_scb_hdl_tc_open_sto
*
* Description This function is called when the transport channel is
* opened while in the opening state. It calls the
* application callback with an open indication or open
* confirm depending on who initiated the open procedure.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_tc_open_sto(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
tAVDT_CTRL avdt_ctrl;
/* open reporting channel here, when it is implemented */
/* call app callback */
if (p_data->open.hdr.err_code == AVDT_CHAN_REPORT) {
avdt_ctrl.hdr.err_code = 0;
avdt_ctrl.hdr.err_param = 1;
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb),
p_scb->p_ccb ? &p_scb->p_ccb->peer_addr : NULL,
AVDT_REPORT_CONN_EVT, &avdt_ctrl);
}
}
#endif
/*******************************************************************************
*
* Function avdt_scb_hdl_write_req
*
* Description This function frees the media packet currently stored in
* the SCB, if any. Then it builds a new media packet from
* with the passed in buffer and stores it in the SCB.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_hdl_write_req(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
uint8_t* p;
uint32_t ssrc;
bool add_rtp_header = !(p_data->apiwrite.opt & AVDT_DATA_OPT_NO_RTP);
/* free packet we're holding, if any; to be replaced with new */
if (p_scb->p_pkt != NULL) {
/* this shouldn't be happening */
AVDT_TRACE_WARNING("Dropped media packet; congested");
}
osi_free_and_reset((void**)&p_scb->p_pkt);
/* Recompute only if the RTP header wasn't disabled by the API */
if (add_rtp_header) {
bool is_content_protection = (p_scb->curr_cfg.num_protect > 0);
add_rtp_header =
A2DP_UsesRtpHeader(is_content_protection, p_scb->curr_cfg.codec_info);
}
/* Build a media packet, and add an RTP header if required. */
if (add_rtp_header) {
ssrc = avdt_scb_gen_ssrc(p_scb);
p_data->apiwrite.p_buf->len += AVDT_MEDIA_HDR_SIZE;
p_data->apiwrite.p_buf->offset -= AVDT_MEDIA_HDR_SIZE;
p_scb->media_seq++;
p = (uint8_t*)(p_data->apiwrite.p_buf + 1) + p_data->apiwrite.p_buf->offset;
UINT8_TO_BE_STREAM(p, AVDT_MEDIA_OCTET1);
UINT8_TO_BE_STREAM(p, p_data->apiwrite.m_pt);
UINT16_TO_BE_STREAM(p, p_scb->media_seq);
UINT32_TO_BE_STREAM(p, p_data->apiwrite.time_stamp);
UINT32_TO_BE_STREAM(p, ssrc);
}
/* store it */
p_scb->p_pkt = p_data->apiwrite.p_buf;
}
/*******************************************************************************
*
* Function avdt_scb_snd_abort_req
*
* Description This function sends an abort command message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_abort_req(tAVDT_SCB* p_scb,
UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
tAVDT_EVT_HDR hdr;
AVDT_TRACE_DEBUG("%s: p_scb->p_ccb=%p", __func__, p_scb->p_ccb);
if (p_scb->p_ccb != NULL) {
p_scb->role = AVDT_CLOSE_INT;
hdr.seid = p_scb->peer_seid;
tAVDT_MSG avdt_msg;
avdt_msg.hdr = hdr;
avdt_msg_send_cmd(p_scb->p_ccb, p_scb, AVDT_SIG_ABORT, &avdt_msg);
}
}
/*******************************************************************************
*
* Function avdt_scb_snd_abort_rsp
*
* Description This function sends an abort response message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_abort_rsp(UNUSED_ATTR tAVDT_SCB* p_scb,
tAVDT_SCB_EVT* p_data) {
avdt_msg_send_rsp(avdt_ccb_by_idx(p_data->msg.hdr.ccb_idx), AVDT_SIG_ABORT,
&p_data->msg);
}
/*******************************************************************************
*
* Function avdt_scb_snd_close_req
*
* Description This function sends a close command message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_close_req(tAVDT_SCB* p_scb,
UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
tAVDT_EVT_HDR hdr;
p_scb->role = AVDT_CLOSE_INT;
hdr.seid = p_scb->peer_seid;
tAVDT_MSG avdt_msg;
avdt_msg.hdr = hdr;
avdt_msg_send_cmd(p_scb->p_ccb, p_scb, AVDT_SIG_CLOSE, &avdt_msg);
}
/*******************************************************************************
*
* Function avdt_scb_snd_stream_close
*
* Description This function sends a close command message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_stream_close(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
osi_free_and_reset((void**)&p_scb->p_pkt);
avdt_scb_snd_close_req(p_scb, p_data);
}
/*******************************************************************************
*
* Function avdt_scb_snd_close_rsp
*
* Description This function sends a close response message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_close_rsp(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
avdt_msg_send_rsp(p_scb->p_ccb, AVDT_SIG_CLOSE, &p_data->msg);
}
/*******************************************************************************
*
* Function avdt_scb_snd_getconfig_req
*
* Description This function sends a get configuration command message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_getconfig_req(tAVDT_SCB* p_scb,
UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
tAVDT_EVT_HDR hdr;
hdr.seid = p_scb->peer_seid;
tAVDT_MSG avdt_msg;
avdt_msg.hdr = hdr;
avdt_msg_send_cmd(p_scb->p_ccb, p_scb, AVDT_SIG_GETCONFIG, &avdt_msg);
}
/*******************************************************************************
*
* Function avdt_scb_snd_getconfig_rsp
*
* Description This function sends a get configuration response message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_getconfig_rsp(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
avdt_msg_send_rsp(p_scb->p_ccb, AVDT_SIG_GETCONFIG, &p_data->msg);
}
/*******************************************************************************
*
* Function avdt_scb_snd_open_req
*
* Description This function sends an open command message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_open_req(tAVDT_SCB* p_scb,
UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
tAVDT_EVT_HDR hdr;
hdr.seid = p_scb->peer_seid;
tAVDT_MSG avdt_msg;
avdt_msg.hdr = hdr;
avdt_msg_send_cmd(p_scb->p_ccb, p_scb, AVDT_SIG_OPEN, &avdt_msg);
}
/*******************************************************************************
*
* Function avdt_scb_snd_open_rsp
*
* Description This function sends an open response message. It also
* calls avdt_ad_open_req() to accept a transport channel
* connection.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_open_rsp(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
/* notify adaption that we're waiting for transport channel open */
p_scb->role = AVDT_OPEN_ACP;
avdt_ad_open_req(AVDT_CHAN_MEDIA, p_scb->p_ccb, p_scb, AVDT_ACP);
/* send response */
avdt_msg_send_rsp(p_scb->p_ccb, AVDT_SIG_OPEN, &p_data->msg);
alarm_set_on_mloop(p_scb->transport_channel_timer,
AVDT_SCB_TC_CONN_TIMEOUT_MS,
avdt_scb_transport_channel_timer_timeout, p_scb);
}
/*******************************************************************************
*
* Function avdt_scb_snd_reconfig_req
*
* Description This function stores the configuration parameters in the
* SCB and sends a reconfiguration command message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_reconfig_req(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
AVDT_TRACE_DEBUG("%s: p_scb->peer_seid=%d p_data->msg.hdr.seid=%d", __func__,
p_scb->peer_seid, p_data->msg.hdr.seid);
A2DP_DumpCodecInfo(p_data->msg.config_cmd.p_cfg->codec_info);
memcpy(&p_scb->req_cfg, p_data->msg.config_cmd.p_cfg, sizeof(tAVDT_CFG));
p_data->msg.hdr.seid = p_scb->peer_seid;
avdt_msg_send_cmd(p_scb->p_ccb, p_scb, AVDT_SIG_RECONFIG, &p_data->msg);
}
/*******************************************************************************
*
* Function avdt_scb_snd_reconfig_rsp
*
* Description This function stores the configuration parameters in the
* SCB and sends a reconfiguration response message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_reconfig_rsp(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
if (p_data->msg.hdr.err_code == 0) {
/* store new configuration */
if (p_scb->req_cfg.num_codec > 0) {
p_scb->curr_cfg.num_codec = p_scb->req_cfg.num_codec;
memcpy(p_scb->curr_cfg.codec_info, p_scb->req_cfg.codec_info,
AVDT_CODEC_SIZE);
}
if (p_scb->req_cfg.num_protect > 0) {
p_scb->curr_cfg.num_protect = p_scb->req_cfg.num_protect;
memcpy(p_scb->curr_cfg.protect_info, p_scb->req_cfg.protect_info,
AVDT_PROTECT_SIZE);
}
/* send response */
avdt_msg_send_rsp(p_scb->p_ccb, AVDT_SIG_RECONFIG, &p_data->msg);
} else {
/* send reject */
avdt_msg_send_rej(p_scb->p_ccb, AVDT_SIG_RECONFIG, &p_data->msg);
}
}
/*******************************************************************************
*
* Function avdt_scb_snd_security_req
*
* Description This function sends a security command message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_security_req(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
p_data->msg.hdr.seid = p_scb->peer_seid;
avdt_msg_send_cmd(p_scb->p_ccb, p_scb, AVDT_SIG_SECURITY, &p_data->msg);
}
/*******************************************************************************
*
* Function avdt_scb_snd_security_rsp
*
* Description This function sends a security response message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_security_rsp(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
if (p_data->msg.hdr.err_code == 0) {
avdt_msg_send_rsp(p_scb->p_ccb, AVDT_SIG_SECURITY, &p_data->msg);
} else {
avdt_msg_send_rej(p_scb->p_ccb, AVDT_SIG_SECURITY, &p_data->msg);
}
}
/*******************************************************************************
*
* Function avdt_scb_snd_setconfig_rej
*
* Description This function marks the SCB as not in use and sends a
* set configuration reject message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_setconfig_rej(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
if (p_scb->p_ccb != NULL) {
avdt_msg_send_rej(p_scb->p_ccb, AVDT_SIG_SETCONFIG, &p_data->msg);
/* clear scb variables */
avdt_scb_clr_vars(p_scb, p_data);
}
}
/*******************************************************************************
*
* Function avdt_scb_snd_setconfig_req
*
* Description This function marks the SCB as in use and copies the
* configuration parameters to the SCB. Then the function
* sends a set configuration command message and initiates
* opening of the signaling channel.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_setconfig_req(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
tAVDT_CFG *p_req, *p_cfg;
AVDT_TRACE_DEBUG("%s", __func__);
A2DP_DumpCodecInfo(p_data->msg.config_cmd.p_cfg->codec_info);
/* copy API parameters to scb, set scb as in use */
p_scb->in_use = true;
p_scb->p_ccb = avdt_ccb_by_idx(p_data->msg.config_cmd.hdr.ccb_idx);
p_scb->peer_seid = p_data->msg.config_cmd.hdr.seid;
p_req = p_data->msg.config_cmd.p_cfg;
p_cfg = &p_scb->cs.cfg;
memcpy(&p_scb->req_cfg, p_data->msg.config_cmd.p_cfg, sizeof(tAVDT_CFG));
avdt_msg_send_cmd(p_scb->p_ccb, p_scb, AVDT_SIG_SETCONFIG, &p_data->msg);
/* tell ccb to open channel */
avdt_ccb_event(p_scb->p_ccb, AVDT_CCB_UL_OPEN_EVT, NULL);
}
/*******************************************************************************
*
* Function avdt_scb_snd_setconfig_rsp
*
* Description This function copies the requested configuration into the
* current configuration and sends a set configuration
* response message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_setconfig_rsp(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
if (p_scb->p_ccb != NULL) {
memcpy(&p_scb->curr_cfg, &p_scb->req_cfg, sizeof(tAVDT_CFG));
avdt_msg_send_rsp(p_scb->p_ccb, AVDT_SIG_SETCONFIG, &p_data->msg);
}
}
/*******************************************************************************
*
* Function avdt_scb_snd_tc_close
*
* Description This function calls avdt_ad_close_req() to close the
* transport channel for this SCB.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_snd_tc_close(tAVDT_SCB* p_scb,
UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
#if (AVDT_REPORTING == TRUE)
if (p_scb->curr_cfg.psc_mask & AVDT_PSC_REPORT)
avdt_ad_close_req(AVDT_CHAN_REPORT, p_scb->p_ccb, p_scb);
#endif
avdt_ad_close_req(AVDT_CHAN_MEDIA, p_scb->p_ccb, p_scb);
}
/*******************************************************************************
*
* Function avdt_scb_cb_err
*
* Description This function calls the application callback function
* indicating an error.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_cb_err(tAVDT_SCB* p_scb, UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
tAVDT_CTRL avdt_ctrl;
/* set error code and parameter */
avdt_ctrl.hdr.err_code = AVDT_ERR_BAD_STATE;
avdt_ctrl.hdr.err_param = 0;
/* call callback, using lookup table to get callback event */
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb), NULL,
avdt_scb_cback_evt[p_scb->curr_evt], &avdt_ctrl);
}
/*******************************************************************************
*
* Function avdt_scb_cong_state
*
* Description This function sets the congestion state of the SCB media
* transport channel.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_cong_state(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
p_scb->cong = p_data->llcong;
}
/*******************************************************************************
*
* Function avdt_scb_rej_state
*
* Description This function sends a reject message to the peer indicating
* incorrect state for the received command message.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_rej_state(UNUSED_ATTR tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
p_data->msg.hdr.err_code = AVDT_ERR_BAD_STATE;
p_data->msg.hdr.err_param = 0;
avdt_msg_send_rej(avdt_ccb_by_idx(p_data->msg.hdr.ccb_idx),
p_data->msg.hdr.sig_id, &p_data->msg);
}
/*******************************************************************************
*
* Function avdt_scb_rej_in_use
*
* Description This function sends a reject message to the peer indicating
* the stream is in use.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_rej_in_use(UNUSED_ATTR tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
p_data->msg.hdr.err_code = AVDT_ERR_IN_USE;
p_data->msg.hdr.err_param = 0;
avdt_msg_send_rej(avdt_ccb_by_idx(p_data->msg.hdr.ccb_idx),
p_data->msg.hdr.sig_id, &p_data->msg);
}
/*******************************************************************************
*
* Function avdt_scb_rej_not_in_use
*
* Description This function sends a reject message to the peer indicating
* the stream is in use.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_rej_not_in_use(UNUSED_ATTR tAVDT_SCB* p_scb,
tAVDT_SCB_EVT* p_data) {
p_data->msg.hdr.err_code = AVDT_ERR_NOT_IN_USE;
p_data->msg.hdr.err_param = 0;
avdt_msg_send_rej(avdt_ccb_by_idx(p_data->msg.hdr.ccb_idx),
p_data->msg.hdr.sig_id, &p_data->msg);
}
/*******************************************************************************
*
* Function avdt_scb_set_remove
*
* Description This function marks an SCB to be removed.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_set_remove(tAVDT_SCB* p_scb, UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
p_scb->remove = true;
}
/*******************************************************************************
*
* Function avdt_scb_free_pkt
*
* Description This function frees the media packet passed in.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_free_pkt(tAVDT_SCB* p_scb, tAVDT_SCB_EVT* p_data) {
tAVDT_CTRL avdt_ctrl;
/* set error code and parameter */
avdt_ctrl.hdr.err_code = AVDT_ERR_BAD_STATE;
avdt_ctrl.hdr.err_param = 0;
osi_free_and_reset((void**)&p_data->apiwrite.p_buf);
AVDT_TRACE_WARNING("Dropped media packet");
/* we need to call callback to keep data flow going */
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb), NULL, AVDT_WRITE_CFM_EVT,
&avdt_ctrl);
}
/*******************************************************************************
*
* Function avdt_scb_clr_pkt
*
* Description This function frees the media packet stored in the SCB.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_clr_pkt(tAVDT_SCB* p_scb, UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
tAVDT_CTRL avdt_ctrl;
tAVDT_CCB* p_ccb;
uint8_t tcid;
uint16_t lcid;
/* set error code and parameter */
avdt_ctrl.hdr.err_code = AVDT_ERR_BAD_STATE;
avdt_ctrl.hdr.err_param = 0;
/* flush the media data queued at L2CAP */
p_ccb = p_scb->p_ccb;
if (p_ccb != NULL) {
/* get tcid from type, scb */
tcid = avdt_ad_type_to_tcid(AVDT_CHAN_MEDIA, p_scb);
lcid = avdt_cb.ad.rt_tbl[avdt_ccb_to_idx(p_ccb)][tcid].lcid;
L2CA_FlushChannel(lcid, L2CAP_FLUSH_CHANS_ALL);
}
if (p_scb->p_pkt != NULL) {
osi_free_and_reset((void**)&p_scb->p_pkt);
AVDT_TRACE_DEBUG("Dropped stored media packet");
/* we need to call callback to keep data flow going */
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb), NULL, AVDT_WRITE_CFM_EVT,
&avdt_ctrl);
}
}
/*******************************************************************************
*
* Function avdt_scb_chk_snd_pkt
*
* Description This function checks if the SCB is congested, and if not
* congested it sends a stored media packet, if any. After it
* sends the packet it calls the application callback function
* with a write confirm.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_chk_snd_pkt(tAVDT_SCB* p_scb, UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
tAVDT_CTRL avdt_ctrl;
BT_HDR* p_pkt;
avdt_ctrl.hdr.err_code = 0;
if (!p_scb->cong) {
if (p_scb->p_pkt != NULL) {
p_pkt = p_scb->p_pkt;
p_scb->p_pkt = NULL;
avdt_ad_write_req(AVDT_CHAN_MEDIA, p_scb->p_ccb, p_scb, p_pkt);
(*p_scb->cs.p_ctrl_cback)(avdt_scb_to_hdl(p_scb), NULL,
AVDT_WRITE_CFM_EVT, &avdt_ctrl);
}
}
}
/*******************************************************************************
*
* Function avdt_scb_transport_channel_timer
*
* Description This function is called to start a timer when the peer
* initiates closing of the stream. The timer verifies that
* the peer disconnects the transport channel.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_transport_channel_timer(tAVDT_SCB* p_scb,
UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
alarm_set_on_mloop(p_scb->transport_channel_timer,
AVDT_SCB_TC_DISC_TIMEOUT_MS,
avdt_scb_transport_channel_timer_timeout, p_scb);
}
/*******************************************************************************
*
* Function avdt_scb_clr_vars
*
* Description This function initializes certain SCB variables.
*
* Returns Nothing.
*
******************************************************************************/
void avdt_scb_clr_vars(tAVDT_SCB* p_scb, UNUSED_ATTR tAVDT_SCB_EVT* p_data) {
p_scb->in_use = false;
p_scb->p_ccb = NULL;
p_scb->peer_seid = 0;
}