void AVDT_AbortReq(UINT8 handle)
{
AVDT_TRACE_ERROR("%s\n", __func__);
tAVDT_SCB *p_scb = avdt_scb_by_hdl(handle);
if (p_scb != NULL) {
avdt_scb_event(p_scb, AVDT_SCB_API_ABORT_REQ_EVT, NULL);
} else {
AVDT_TRACE_ERROR("%s Improper SCB, can not abort the stream\n", __func__);
}
}
/*******************************************************************************
**
** Function AVDT_RemoveStream
**
** Description Remove a stream endpoint. This function is called when
** the application is no longer using a stream endpoint.
** If this function is called when the endpoint is connected
** the connection is closed and then the stream endpoint
** is removed.
**
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_RemoveStream(UINT8 handle)
{
UINT16 result = AVDT_SUCCESS;
tAVDT_SCB *p_scb;
/* look up scb */
if ((p_scb = avdt_scb_by_hdl(handle)) == NULL) {
result = AVDT_BAD_HANDLE;
} else {
/* send remove event to scb */
avdt_scb_event(p_scb, AVDT_SCB_API_REMOVE_EVT, NULL);
}
return result;
}
/*******************************************************************************
**
** 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_CloseReq
**
** Description Close a stream endpoint. This stops the transfer of media
** packets and closes the transport channel associated with
** this stream endpoint. When the stream is closed, an
** AVDT_CLOSE_CFM_EVT is sent to the application via the
** control callback function for this handle.
**
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_CloseReq(UINT8 handle)
{
tAVDT_SCB *p_scb;
UINT16 result = AVDT_SUCCESS;
/* map handle to scb */
if ((p_scb = avdt_scb_by_hdl(handle)) == NULL) {
result = AVDT_BAD_HANDLE;
} else
/* send event to scb */
{
avdt_scb_event(p_scb, AVDT_SCB_API_CLOSE_REQ_EVT, NULL);
}
return result;
}
/*******************************************************************************
**
** Function AVDT_SecurityReq
**
** Description Send a security request to the peer device. When the
** security procedure is completed, an AVDT_SECURITY_CFM_EVT
** is sent to the application via the control callback function
** for this handle. (Please note that AVDTP security procedures
** are unrelated to Bluetooth link level security.)
**
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_SecurityReq(UINT8 handle, UINT8 *p_data, UINT16 len)
{
tAVDT_SCB *p_scb;
UINT16 result = AVDT_SUCCESS;
tAVDT_SCB_EVT evt;
/* map handle to scb */
if ((p_scb = avdt_scb_by_hdl(handle)) == NULL) {
result = AVDT_BAD_HANDLE;
}
/* send event to scb */
else {
evt.msg.security_rsp.p_data = p_data;
evt.msg.security_rsp.len = len;
avdt_scb_event(p_scb, AVDT_SCB_API_SECURITY_REQ_EVT, &evt);
}
return result;
}
/*******************************************************************************
**
** Function avdt_ad_tc_cong_ind
**
** Description This function is called by the L2CAP interface layer when
** L2CAP calls the congestion callback. It looks up the CCB
** or SCB for the channel and sends it a congestion event.
** The is_congested parameter is the same value passed by
** the L2CAP callback function.
**
**
** Returns Nothing.
**
*******************************************************************************/
void avdt_ad_tc_cong_ind(tAVDT_TC_TBL *p_tbl, BOOLEAN is_congested)
{
tAVDT_CCB *p_ccb;
tAVDT_SCB *p_scb;
/* if signaling channel, notify ccb of congestion */
if (p_tbl->tcid == 0) {
p_ccb = avdt_ccb_by_idx(p_tbl->ccb_idx);
avdt_ccb_event(p_ccb, AVDT_CCB_LL_CONG_EVT, (tAVDT_CCB_EVT *) &is_congested);
}
/* if media or other channel, notify scb that channel open */
else {
/* look up scb in stream routing table by ccb, tcid */
p_scb = avdt_scb_by_hdl(avdt_cb.ad.rt_tbl[p_tbl->ccb_idx][p_tbl->tcid].scb_hdl);
if (p_scb != NULL) {
avdt_scb_event(p_scb, AVDT_SCB_TC_CONG_EVT, (tAVDT_SCB_EVT *) &is_congested);
}
}
}
/*******************************************************************************
**
** Function AVDT_DelayReport
**
** Description This functions sends a Delay Report to the peer device
** that is associated with a particular SEID.
** This function is called by SNK device.
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_DelayReport(UINT8 handle, UINT8 seid, UINT16 delay)
{
tAVDT_SCB *p_scb;
UINT16 result = AVDT_SUCCESS;
tAVDT_SCB_EVT evt;
/* map handle to scb */
if ((p_scb = avdt_scb_by_hdl(handle)) == NULL) {
result = AVDT_BAD_HANDLE;
} else
/* send event to scb */
{
evt.apidelay.hdr.seid = seid;
evt.apidelay.delay = delay;
avdt_scb_event(p_scb, AVDT_SCB_API_DELAY_RPT_REQ_EVT, &evt);
}
return result;
}
/*******************************************************************************
**
** Function AVDT_ReconfigRsp
**
** Description Respond to a reconfigure request from the peer device.
** This function must be called if the application receives
** an AVDT_RECONFIG_IND_EVT through its control callback.
**
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_ReconfigRsp(UINT8 handle, UINT8 label, UINT8 error_code, UINT8 category)
{
tAVDT_SCB *p_scb;
tAVDT_SCB_EVT evt;
UINT16 result = AVDT_SUCCESS;
/* map handle to scb */
if ((p_scb = avdt_scb_by_hdl(handle)) == NULL) {
result = AVDT_BAD_HANDLE;
}
/* send event to scb */
else {
evt.msg.hdr.err_code = error_code;
evt.msg.hdr.err_param = category;
evt.msg.hdr.label = label;
avdt_scb_event(p_scb, AVDT_SCB_API_RECONFIG_RSP_EVT, &evt);
}
return result;
}
/*******************************************************************************
**
** Function AVDT_ReconfigReq
**
** Description Reconfigure a stream endpoint. This allows the application
** to change the codec or content protection capabilities of
** a stream endpoint after it has been opened. This function
** can only be called if the stream is opened but not started
** or if the stream has been suspended. When the procedure
** is completed, an AVDT_RECONFIG_CFM_EVT is sent to the
** application via the control callback function for this handle.
**
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_ReconfigReq(UINT8 handle, tAVDT_CFG *p_cfg)
{
tAVDT_SCB *p_scb;
UINT16 result = AVDT_SUCCESS;
tAVDT_SCB_EVT evt;
/* map handle to scb */
if ((p_scb = avdt_scb_by_hdl(handle)) == NULL) {
result = AVDT_BAD_HANDLE;
}
/* send event to scb */
else {
/* force psc_mask to zero */
p_cfg->psc_mask = 0;
evt.msg.reconfig_cmd.p_cfg = p_cfg;
avdt_scb_event(p_scb, AVDT_SCB_API_RECONFIG_REQ_EVT, &evt);
}
return result;
}
/*******************************************************************************
**
** Function AVDT_OpenReq
**
** Description This function initiates a connection to the AVDTP service
** on the peer device, if not already present, and connects
** to a stream endpoint on a peer device. When the connection
** is completed, an AVDT_OPEN_CFM_EVT is sent to the
** application via the control callback function for this handle.
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_OpenReq(UINT8 handle, BD_ADDR bd_addr, UINT8 seid, tAVDT_CFG *p_cfg)
{
tAVDT_CCB *p_ccb = NULL;
tAVDT_SCB *p_scb = NULL;
UINT16 result = AVDT_SUCCESS;
tAVDT_SCB_EVT evt;
BTTRC_AVDT_API0(AVDT_TRACE_API_OPEN_REQ);
/* verify SEID */
if ((seid < AVDT_SEID_MIN) || (seid > AVDT_SEID_MAX))
{
result = AVDT_BAD_PARAMS;
}
/* map handle to scb */
else if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
{
result = AVDT_BAD_HANDLE;
}
/* find channel control block for this bd addr; if none, allocate one */
else if ((p_ccb = avdt_ccb_by_bd(bd_addr)) == NULL)
{
if ((p_ccb = avdt_ccb_alloc(bd_addr)) == NULL)
{
/* could not allocate channel control block */
result = AVDT_NO_RESOURCES;
}
}
/* send event to scb */
if (result == AVDT_SUCCESS)
{
evt.msg.config_cmd.hdr.seid = seid;
evt.msg.config_cmd.hdr.ccb_idx = avdt_ccb_to_idx(p_ccb);
evt.msg.config_cmd.int_seid = handle;
evt.msg.config_cmd.p_cfg = p_cfg;
avdt_scb_event(p_scb, AVDT_SCB_API_SETCONFIG_REQ_EVT, &evt);
}
return result;
}
/*******************************************************************************
**
** 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_ConfigRsp
**
** Description Respond to a configure request from the peer device. This
** function must be called if the application receives an
** AVDT_CONFIG_IND_EVT through its control callback.
**
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_ConfigRsp(UINT8 handle, UINT8 label, UINT8 error_code, UINT8 category)
{
tAVDT_SCB *p_scb;
tAVDT_SCB_EVT evt;
UINT16 result = AVDT_SUCCESS;
UINT8 event_code;
BTTRC_AVDT_API0(AVDT_TRACE_API_CONFIG_RSP);
/* map handle to scb */
if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
{
result = AVDT_BAD_HANDLE;
}
/* handle special case when this function is called but peer has not send
** a configuration cmd; ignore and return error result
*/
else if (!p_scb->in_use)
{
result = AVDT_BAD_HANDLE;
}
/* send event to scb */
else
{
evt.msg.hdr.err_code = error_code;
evt.msg.hdr.err_param = category;
evt.msg.hdr.label = label;
if (error_code == 0)
{
event_code = AVDT_SCB_API_SETCONFIG_RSP_EVT;
}
else
{
event_code = AVDT_SCB_API_SETCONFIG_REJ_EVT;
}
avdt_scb_event(p_scb, event_code, &evt);
}
return result;
}
/*******************************************************************************
**
** Function AVDT_WriteReqOpt
**
** Description Send a media packet to the peer device. The stream must
** be started before this function is called. Also, this
** function can only be called if the stream is a SRC.
**
** When AVDTP has sent the media packet and is ready for the
** next packet, an AVDT_WRITE_CFM_EVT is sent to the
** application via the control callback. The application must
** wait for the AVDT_WRITE_CFM_EVT before it makes the next
** call to AVDT_WriteReq(). If the applications calls
** AVDT_WriteReq() before it receives the event the packet
** will not be sent. The application may make its first call
** to AVDT_WriteReq() after it receives an AVDT_START_CFM_EVT
** or AVDT_START_IND_EVT.
**
** The application passes the packet using the BT_HDR structure.
** This structure is described in section 2.1. The offset
** field must be equal to or greater than AVDT_MEDIA_OFFSET
** (if NO_RTP is specified, L2CAP_MIN_OFFSET can be used).
** This allows enough space in the buffer for the L2CAP and
** AVDTP headers.
**
** The memory pointed to by p_pkt must be a GKI buffer
** allocated by the application. This buffer will be freed
** by the protocol stack; the application must not free
** this buffer.
**
** The opt parameter allows passing specific options like:
** - NO_RTP : do not add the RTP header to buffer
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_WriteReqOpt(UINT8 handle, BT_HDR *p_pkt, UINT32 time_stamp, UINT8 m_pt, tAVDT_DATA_OPT_MASK opt)
{
tAVDT_SCB *p_scb;
tAVDT_SCB_EVT evt;
UINT16 result = AVDT_SUCCESS;
/* map handle to scb */
if ((p_scb = avdt_scb_by_hdl(handle)) == NULL) {
result = AVDT_BAD_HANDLE;
} else {
evt.apiwrite.p_buf = p_pkt;
evt.apiwrite.time_stamp = time_stamp;
evt.apiwrite.m_pt = m_pt;
evt.apiwrite.opt = opt;
#if AVDT_MULTIPLEXING == TRUE
GKI_init_q (&evt.apiwrite.frag_q);
#endif
avdt_scb_event(p_scb, AVDT_SCB_API_WRITE_REQ_EVT, &evt);
}
return result;
}
/*******************************************************************************
**
** Function avdt_ad_tc_open_ind
**
** Description This function is called by the L2CAP interface when
** the L2CAP channel is opened. It looks up the CCB or SCB
** for the channel and sends it an open event.
**
**
** Returns Nothing.
**
*******************************************************************************/
void avdt_ad_tc_open_ind(tAVDT_TC_TBL *p_tbl)
{
tAVDT_CCB *p_ccb;
tAVDT_SCB *p_scb;
tAVDT_OPEN open;
tAVDT_EVT_HDR evt;
p_tbl->state = AVDT_AD_ST_OPEN;
/* if signaling channel, notify ccb that channel open */
if (p_tbl->tcid == 0) {
/* set the signal channel to use high priority within the ACL link */
L2CA_SetTxPriority(avdt_cb.ad.rt_tbl[p_tbl->ccb_idx][AVDT_CHAN_SIG].lcid, L2CAP_CHNL_PRIORITY_HIGH);
p_ccb = avdt_ccb_by_idx(p_tbl->ccb_idx);
/* use err_param to indicate the role of connection.
* AVDT_ACP, if ACP */
evt.err_param = AVDT_INT;
if (p_tbl->cfg_flags & AVDT_L2C_CFG_CONN_ACP) {
evt.err_param = AVDT_ACP;
}
avdt_ccb_event(p_ccb, AVDT_CCB_LL_OPEN_EVT, (tAVDT_CCB_EVT *)&evt);
}
/* if media or other channel, notify scb that channel open */
else {
/* look up scb in stream routing table by ccb, tcid */
p_scb = avdt_scb_by_hdl(avdt_cb.ad.rt_tbl[p_tbl->ccb_idx][p_tbl->tcid].scb_hdl);
/* put lcid in event data */
if (p_scb != NULL) {
open.peer_mtu = p_tbl->peer_mtu;
open.lcid = avdt_cb.ad.rt_tbl[p_tbl->ccb_idx][p_tbl->tcid].lcid;
open.hdr.err_code = avdt_ad_tcid_to_type(p_tbl->tcid);
avdt_scb_event(p_scb, AVDT_SCB_TC_OPEN_EVT, (tAVDT_SCB_EVT *) &open);
}
}
}
/*******************************************************************************
**
** Function avdt_process_timeout
**
** Description This function is called by BTU when an AVDTP timer
** expires. The function sends a timer event to the
** appropriate CCB or SCB state machine.
**
** This function is for use internal to the stack only.
**
**
** Returns void
**
*******************************************************************************/
void avdt_process_timeout(TIMER_LIST_ENT *p_tle)
{
UINT8 event = 0;
UINT8 err_code = AVDT_ERR_TIMEOUT;
switch (p_tle->event)
{
case BTU_TTYPE_AVDT_CCB_RET:
event = AVDT_CCB_RET_TOUT_EVT + AVDT_CCB_MKR;
break;
case BTU_TTYPE_AVDT_CCB_RSP:
event = AVDT_CCB_RSP_TOUT_EVT + AVDT_CCB_MKR;
break;
case BTU_TTYPE_AVDT_CCB_IDLE:
event = AVDT_CCB_IDLE_TOUT_EVT + AVDT_CCB_MKR;
break;
case BTU_TTYPE_AVDT_SCB_TC:
event = AVDT_SCB_TC_TOUT_EVT;
break;
default:
break;
}
if (event & AVDT_CCB_MKR)
{
avdt_ccb_event((tAVDT_CCB *) p_tle->param, (UINT8) (event & ~AVDT_CCB_MKR),
(tAVDT_CCB_EVT *) &err_code);
}
else
{
avdt_scb_event((tAVDT_SCB *) p_tle->param, event, NULL);
}
}
/*******************************************************************************
**
** Function AVDT_WriteDataReq
**
** Description Send a media packet to the peer device. The stream must
** be started before this function is called. Also, this
** function can only be called if the stream is a SRC.
**
** When AVDTP has sent the media packet and is ready for the
** next packet, an AVDT_WRITE_CFM_EVT is sent to the
** application via the control callback. The application must
** wait for the AVDT_WRITE_CFM_EVT before it makes the next
** call to AVDT_WriteDataReq(). If the applications calls
** AVDT_WriteDataReq() before it receives the event the packet
** will not be sent. The application may make its first call
** to AVDT_WriteDataReq() after it receives an
** AVDT_START_CFM_EVT or AVDT_START_IND_EVT.
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
AVDT_API extern UINT16 AVDT_WriteDataReq(UINT8 handle, UINT8 *p_data, UINT32 data_len,
UINT32 time_stamp, UINT8 m_pt, UINT8 marker)
{
tAVDT_SCB *p_scb;
tAVDT_SCB_EVT evt;
UINT16 result = AVDT_SUCCESS;
BTTRC_AVDT_API1(AVDT_TRACE_API_WRITE_DATA_REQ, BTTRC_PARAM_UINT32, data_len);
do
{
/* check length of media frame */
if(data_len > AVDT_MAX_MEDIA_SIZE)
{
result = AVDT_BAD_PARAMS;
break;
}
/* map handle to scb */
if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
{
result = AVDT_BAD_HANDLE;
break;
}
AVDT_TRACE_WARNING1("mux_tsid_media:%d", p_scb->curr_cfg.mux_tsid_media);
if (p_scb->p_pkt != NULL
|| p_scb->p_ccb == NULL
|| !GKI_queue_is_empty(&p_scb->frag_q)
|| p_scb->frag_off != 0
|| p_scb->curr_cfg.mux_tsid_media == 0)
{
result = AVDT_ERR_BAD_STATE;
AVDT_TRACE_WARNING4("p_scb->p_pkt=%x, p_scb->p_ccb=%x, IsQueueEmpty=%x, p_scb->frag_off=%x",
p_scb->p_pkt, p_scb->p_ccb, GKI_queue_is_empty(&p_scb->frag_q), p_scb->frag_off);
break;
}
evt.apiwrite.p_buf = 0; /* it will indicate using of fragments queue frag_q */
/* create queue of media fragments */
GKI_init_q (&evt.apiwrite.frag_q);
/* compose fragments from media payload and put fragments into gueue */
avdt_scb_queue_frags(p_scb, &p_data, &data_len, &evt.apiwrite.frag_q);
if(GKI_queue_is_empty(&evt.apiwrite.frag_q))
{
AVDT_TRACE_WARNING0("AVDT_WriteDataReq out of GKI buffers");
result = AVDT_ERR_RESOURCE;
break;
}
evt.apiwrite.data_len = data_len;
evt.apiwrite.p_data = p_data;
/* process the fragments queue */
evt.apiwrite.time_stamp = time_stamp;
evt.apiwrite.m_pt = m_pt | (marker<<7);
avdt_scb_event(p_scb, AVDT_SCB_API_WRITE_REQ_EVT, &evt);
} while (0);
#if (BT_USE_TRACES == TRUE)
if(result != AVDT_SUCCESS)
{
AVDT_TRACE_WARNING1("*** AVDT_WriteDataReq failed result=%d",result);
}
#endif
return result;
}