/*******************************************************************************
**
** 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;
BTTRC_AVDT_API0(AVDT_TRACE_API_WRITE_REQ);
/* 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_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);
}
}
GKI_freebuf(p_ccb->p_curr_cmd);
p_ccb->p_curr_cmd = NULL;
}
}
/*******************************************************************************
**
** Function AVDT_SetMediaBuf
**
** Description Assigns buffer for media packets or forbids using of assigned
** buffer if argument p_buf is NULL. This function can only
** be called if the stream is a SNK.
**
** AVDTP uses this buffer to reassemble fragmented media packets.
** When AVDTP receives a complete media packet, it calls the
** p_media_cback assigned by AVDT_CreateStream().
** This function can be called during callback to assign a
** different buffer for next media packet or can leave the current
** buffer for next packet.
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
AVDT_API extern UINT16 AVDT_SetMediaBuf(UINT8 handle, UINT8 *p_buf, UINT32 buf_len)
{
tAVDT_SCB *p_scb;
UINT16 result = AVDT_SUCCESS;
BTTRC_AVDT_API0(AVDT_TRACE_API_SET_MEDIABUF);
/* map handle to scb */
if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
{
result = AVDT_BAD_HANDLE;
}
else
{
if(p_buf && p_scb->cs.p_media_cback == NULL)
result = AVDT_NO_RESOURCES;
else
{
p_scb->p_media_buf = p_buf;
p_scb->media_buf_len = buf_len;
}
}
return result;
}
/*******************************************************************************
**
** Function AVDT_SecurityRsp
**
** Description Respond to a security request from the peer device.
** This function must be called if the application receives
** an AVDT_SECURITY_IND_EVT through its control callback.
** (Please note that AVDTP security procedures are unrelated
** to Bluetooth link level security.)
**
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_SecurityRsp(UINT8 handle, UINT8 label, UINT8 error_code,
UINT8 *p_data, UINT16 len)
{
tAVDT_SCB *p_scb;
UINT16 result = AVDT_SUCCESS;
tAVDT_SCB_EVT evt;
BTTRC_AVDT_API0(AVDT_TRACE_API_SECURITY_RSP);
/* 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.hdr.err_code = error_code;
evt.msg.security_rsp.hdr.label = label;
evt.msg.security_rsp.p_data = p_data;
evt.msg.security_rsp.len = len;
avdt_scb_event(p_scb, AVDT_SCB_API_SECURITY_RSP_EVT, &evt);
}
return result;
}
/*******************************************************************************
**
** Function avdt_ad_tc_data_ind
**
** Description This function is called by the L2CAP interface layer when
** incoming data is received from L2CAP. It looks up the CCB
** or SCB for the channel and routes the data accordingly.
**
**
** Returns Nothing.
**
*******************************************************************************/
void avdt_ad_tc_data_ind(tAVDT_TC_TBL *p_tbl, BT_HDR *p_buf)
{
tAVDT_CCB *p_ccb;
tAVDT_SCB *p_scb;
/* store type (media, recovery, reporting) */
p_buf->layer_specific = avdt_ad_tcid_to_type(p_tbl->tcid);
/* if signaling channel, handle control message */
if (p_tbl->tcid == 0) {
p_ccb = avdt_ccb_by_idx(p_tbl->ccb_idx);
avdt_msg_ind(p_ccb, p_buf);
}
/* if media or other channel, send event to scb */
else {
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_DATA_EVT, (tAVDT_SCB_EVT *) &p_buf);
} else {
GKI_freebuf(p_buf);
AVDT_TRACE_ERROR(" avdt_ad_tc_data_ind buffer freed");
}
}
}
/*******************************************************************************
**
** Function avdt_ad_tc_close_ind
**
** Description This function is called by the L2CAP interface when the
** L2CAP channel is closed. It looks up the CCB or SCB for
** the channel and sends it a close event. The reason
** parameter is the same value passed by the L2CAP
** callback function.
**
**
** Returns Nothing.
**
*******************************************************************************/
void avdt_ad_tc_close_ind(tAVDT_TC_TBL *p_tbl, UINT16 reason)
{
tAVDT_CCB *p_ccb;
tAVDT_SCB *p_scb;
tAVDT_SCB_TC_CLOSE close;
// UNUSED(reason);
close.old_tc_state = p_tbl->state;
/* clear avdt_ad_tc_tbl entry */
p_tbl->state = AVDT_AD_ST_UNUSED;
p_tbl->cfg_flags = 0;
p_tbl->peer_mtu = L2CAP_DEFAULT_MTU;
AVDT_TRACE_DEBUG("avdt_ad_tc_close_ind tcid: %d, old: %d\n",
p_tbl->tcid, close.old_tc_state);
/* if signaling channel, notify ccb that channel open */
if (p_tbl->tcid == 0) {
p_ccb = avdt_ccb_by_idx(p_tbl->ccb_idx);
p_ccb->disc_rsn = (reason == AVDT_DISC_RSN_ABNORMAL) ? AVDT_DISC_RSN_ABNORMAL : AVDT_DISC_RSN_NORMAL;
avdt_ccb_event(p_ccb, AVDT_CCB_LL_CLOSE_EVT, NULL);
}
/* if media or other channel, notify scb that channel close */
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) {
close.tcid = p_tbl->tcid;
close.type = avdt_ad_tcid_to_type(p_tbl->tcid);
close.disc_rsn = (reason == AVDT_DISC_RSN_ABNORMAL) ? AVDT_DISC_RSN_ABNORMAL : AVDT_DISC_RSN_NORMAL;
avdt_scb_event(p_scb, AVDT_SCB_TC_CLOSE_EVT, (tAVDT_SCB_EVT *)&close);
}
}
}
/*******************************************************************************
**
** 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;
/* 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_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;
/* 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_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_SuspendReq
**
** Description Suspend one or more stream endpoints. This suspends the
** transfer of media packets for the streams. All stream
** endpoints must previously be open and started. When the
** streams are suspended, an AVDT_SUSPEND_CFM_EVT is sent to
** the application via the control callback function for
** each stream.
**
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_SuspendReq(UINT8 *p_handles, UINT8 num_handles)
{
tAVDT_SCB *p_scb = NULL;
tAVDT_CCB_EVT evt;
UINT16 result = AVDT_SUCCESS;
int i;
if ((num_handles == 0) || (num_handles > AVDT_NUM_SEPS)) {
result = AVDT_BAD_PARAMS;
} else {
/* verify handles */
for (i = 0; i < num_handles; i++) {
if ((p_scb = avdt_scb_by_hdl(p_handles[i])) == NULL) {
result = AVDT_BAD_HANDLE;
break;
}
}
}
if (result == AVDT_SUCCESS) {
if (p_scb->p_ccb == NULL) {
result = AVDT_BAD_HANDLE;
} else {
/* send event to ccb */
memcpy(evt.msg.multi.seid_list, p_handles, num_handles);
evt.msg.multi.num_seps = num_handles;
avdt_ccb_event(p_scb->p_ccb, AVDT_CCB_API_SUSPEND_REQ_EVT, &evt);
}
}
return result;
}
/*******************************************************************************
**
** 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.
**
*******************************************************************************/
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;
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_WARNING("mux_tsid_media:%d\n", 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_WARNING("p_scb->p_pkt=%p, p_scb->p_ccb=%p, IsQueueEmpty=%x, p_scb->frag_off=%x\n",
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_WARNING("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_WARNING("*** AVDT_WriteDataReq failed result=%d\n", result);
}
#endif
return result;
}
/*******************************************************************************
**
** 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);
}
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_scb_peer_seid_list
**
** Description Given a list of SCB handles, return a list of peer SEIDs
** for the handles, copied in place into the struct passed in.
**
**
** Returns Nothing.
**
*******************************************************************************/
void avdt_scb_peer_seid_list(tAVDT_MULTI *p_multi)
{
int i;
tAVDT_SCB *p_scb;
for (i = 0; i < p_multi->num_seps; i++) {
if ((p_scb = avdt_scb_by_hdl(p_multi->seid_list[i])) != NULL) {
p_multi->seid_list[i] = p_scb->peer_seid;
}
}
}
/*******************************************************************************
**
** Function avdt_scb_verify
**
** Description Verify the condition of a list of scbs.
**
**
** Returns SEID that failed, or 0 if success.
**
*******************************************************************************/
UINT8 avdt_scb_verify(tAVDT_CCB *p_ccb, UINT8 state, UINT8 *p_seid, UINT16 num_seid, UINT8 *p_err_code)
{
int i;
tAVDT_SCB *p_scb;
UINT8 nsc_mask;
UINT8 chk_state;
UINT8 ret = 0;
AVDT_TRACE_DEBUG("avdt_scb_verify state %d", state);
/* set nonsupported command mask */
/* translate public state into private state */
nsc_mask = 0;
chk_state = AVDT_SCB_STREAM_ST;
switch(state)
{
case AVDT_VERIFY_SUSPEND:
nsc_mask = AVDT_NSC_SUSPEND;
break;
case AVDT_VERIFY_OPEN:
case AVDT_VERIFY_START:
chk_state = AVDT_SCB_OPEN_ST;
break;
}
/* verify every scb */
for (i = 0; i < num_seid; i++)
{
if ((p_scb = avdt_scb_by_hdl(p_seid[i])) == NULL)
{
*p_err_code = AVDT_ERR_BAD_STATE;
break;
}
else if ((p_scb->state != chk_state) || (p_scb->p_ccb != p_ccb))
{
*p_err_code = AVDT_ERR_BAD_STATE;
break;
}
else if (p_scb->cs.nsc_mask & nsc_mask)
{
*p_err_code = AVDT_ERR_NSC;
break;
}
}
if (i != num_seid)
{
ret = p_seid[i];
}
AVDT_TRACE_DEBUG("avdt_scb_verify state %d, nsc_mask0x%x, ret: %d",
chk_state, nsc_mask, ret);
return ret;
}
/*******************************************************************************
**
** 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_scb_verify
**
** Description Verify the condition of a list of scbs.
**
**
** Returns SEID that failed, or 0 if success.
**
*******************************************************************************/
UINT8 avdt_scb_verify(tAVDT_CCB *p_ccb, UINT8 state, UINT8 *p_seid, UINT16 num_seid, UINT8 *p_err_code)
{
int i;
tAVDT_SCB *p_scb;
UINT8 nsc_mask;
UINT8 ret = 0;
AVDT_TRACE_DEBUG("avdt_scb_verify state %d\n", state);
/* set nonsupported command mask */
/* translate public state into private state */
nsc_mask = 0;
if (state == AVDT_VERIFY_SUSPEND) {
nsc_mask = AVDT_NSC_SUSPEND;
}
/* verify every scb */
for (i = 0, *p_err_code = 0; (i < num_seid) && (*p_err_code == 0) && (i < AVDT_NUM_SEPS); i++) {
if ((p_scb = avdt_scb_by_hdl(p_seid[i])) == NULL) {
*p_err_code = AVDT_ERR_BAD_STATE;
} else if (p_scb->p_ccb != p_ccb) {
*p_err_code = AVDT_ERR_BAD_STATE;
} else if (p_scb->cs.nsc_mask & nsc_mask) {
*p_err_code = AVDT_ERR_NSC;
}
switch (state) {
case AVDT_VERIFY_OPEN:
case AVDT_VERIFY_START:
if (p_scb->state != AVDT_SCB_OPEN_ST && p_scb->state != AVDT_SCB_STREAM_ST) {
*p_err_code = AVDT_ERR_BAD_STATE;
}
break;
case AVDT_VERIFY_SUSPEND:
case AVDT_VERIFY_STREAMING:
if (p_scb->state != AVDT_SCB_STREAM_ST) {
*p_err_code = AVDT_ERR_BAD_STATE;
}
break;
}
}
if ((i != num_seid) && (i < AVDT_NUM_SEPS)) {
ret = p_seid[i];
}
return ret;
}
/*******************************************************************************
**
** 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_GetSignalChannel
**
** Description Get the L2CAP CID used by the signal channel of the given handle.
**
** Returns CID if successful, otherwise 0.
**
*******************************************************************************/
UINT16 AVDT_GetSignalChannel(UINT8 handle, BD_ADDR bd_addr)
{
tAVDT_SCB *p_scb;
tAVDT_CCB *p_ccb;
UINT8 tcid = 0; /* tcid is always 0 for signal channel */
UINT16 lcid = 0;
/* map handle to scb */
if (((p_scb = avdt_scb_by_hdl(handle)) != NULL)
&& ((p_ccb = p_scb->p_ccb) != NULL)) {
lcid = avdt_cb.ad.rt_tbl[avdt_ccb_to_idx(p_ccb)][tcid].lcid;
} else if ((p_ccb = avdt_ccb_by_bd(bd_addr)) != NULL) {
lcid = avdt_cb.ad.rt_tbl[avdt_ccb_to_idx(p_ccb)][tcid].lcid;
}
return (lcid);
}
/*******************************************************************************
**
** 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_GetL2CapChannel
**
** Description Get the L2CAP CID used by the handle.
**
** Returns CID if successful, otherwise 0.
**
*******************************************************************************/
UINT16 AVDT_GetL2CapChannel(UINT8 handle)
{
tAVDT_SCB *p_scb;
tAVDT_CCB *p_ccb;
UINT8 tcid;
UINT16 lcid = 0;
/* map handle to scb */
if (((p_scb = avdt_scb_by_hdl(handle)) != NULL)
&& ((p_ccb = p_scb->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;
}
return (lcid);
}
/*******************************************************************************
**
** 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_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_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_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_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_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_SendReport
**
** Description
**
**
**
** Returns
**
*******************************************************************************/
UINT16 AVDT_SendReport(UINT8 handle, AVDT_REPORT_TYPE type,
tAVDT_REPORT_DATA *p_data)
{
tAVDT_SCB *p_scb;
UINT16 result = AVDT_BAD_PARAMS;
BT_HDR *p_pkt;
tAVDT_TC_TBL *p_tbl;
UINT8 *p, *plen, *pm1, *p_end;
#if AVDT_MULTIPLEXING == TRUE
UINT8 *p_al = NULL, u;
#endif
UINT32 ssrc;
UINT16 len;
/* map handle to scb && verify parameters */
if (((p_scb = avdt_scb_by_hdl(handle)) != NULL)
&& (p_scb->p_ccb != NULL)
&& (((type == AVDT_RTCP_PT_SR) && (p_scb->cs.tsep == AVDT_TSEP_SRC)) ||
((type == AVDT_RTCP_PT_RR) && (p_scb->cs.tsep == AVDT_TSEP_SNK)) ||
(type == AVDT_RTCP_PT_SDES)) ) {
result = AVDT_NO_RESOURCES;
/* build SR - assume fit in one packet */
p_tbl = avdt_ad_tc_tbl_by_type(AVDT_CHAN_REPORT, p_scb->p_ccb, p_scb);
if ((p_tbl->state == AVDT_AD_ST_OPEN) &&
(p_pkt = (BT_HDR *)GKI_getbuf(p_tbl->peer_mtu)) != NULL) {
p_pkt->offset = L2CAP_MIN_OFFSET;
p = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
#if AVDT_MULTIPLEXING == TRUE
if (p_scb->curr_cfg.psc_mask & AVDT_PSC_MUX) {
/* Adaptation Layer header later */
p_al = p;
p += 2;
}
#endif
pm1 = p;
*p++ = AVDT_MEDIA_OCTET1 | 1;
*p++ = type;
/* save the location for length */
plen = p;
p += 2;
ssrc = avdt_scb_gen_ssrc(p_scb);
UINT32_TO_BE_STREAM(p, ssrc);
switch (type) {
case AVDT_RTCP_PT_SR: /* Sender Report */
*pm1 = AVDT_MEDIA_OCTET1;
UINT32_TO_BE_STREAM(p, p_data->sr.ntp_sec);
UINT32_TO_BE_STREAM(p, p_data->sr.ntp_frac);
UINT32_TO_BE_STREAM(p, p_data->sr.rtp_time);
UINT32_TO_BE_STREAM(p, p_data->sr.pkt_count);
UINT32_TO_BE_STREAM(p, p_data->sr.octet_count);
break;
case AVDT_RTCP_PT_RR: /* Receiver Report */
*p++ = p_data->rr.frag_lost;
AVDT_TRACE_API("packet_lost: %d\n", p_data->rr.packet_lost);
p_data->rr.packet_lost &= 0xFFFFFF;
AVDT_TRACE_API("packet_lost: %d\n", p_data->rr.packet_lost);
UINT24_TO_BE_STREAM(p, p_data->rr.packet_lost);
UINT32_TO_BE_STREAM(p, p_data->rr.seq_num_rcvd);
UINT32_TO_BE_STREAM(p, p_data->rr.jitter);
UINT32_TO_BE_STREAM(p, p_data->rr.lsr);
UINT32_TO_BE_STREAM(p, p_data->rr.dlsr);
break;
case AVDT_RTCP_PT_SDES: /* Source Description */
*p++ = AVDT_RTCP_SDES_CNAME;
len = strlen((char *)p_data->cname);
if (len > AVDT_MAX_CNAME_SIZE) {
len = AVDT_MAX_CNAME_SIZE;
}
*p++ = (UINT8)len;
BCM_STRNCPY_S((char *)p, len + 1, (char *)p_data->cname, len + 1);
p += len;
break;
}
p_end = p;
len = p - pm1 - 1;
UINT16_TO_BE_STREAM(plen, len);
#if AVDT_MULTIPLEXING == TRUE
if (p_scb->curr_cfg.psc_mask & AVDT_PSC_MUX) {
/* Adaptation Layer header */
p = p_al;
len++;
UINT16_TO_BE_STREAM(p_al, len );
/* TSID, no-fragment bit and coding of length(9-bit length field) */
u = *p;
*p = (p_scb->curr_cfg.mux_tsid_report << 3) | AVDT_ALH_LCODE_9BITM0;
if (u) {
*p |= AVDT_ALH_LCODE_9BITM1;
}
}
#endif
/* set the actual payload length */
p_pkt->len = p_end - p;
/* send the packet */
if (L2CAP_DW_FAILED != avdt_ad_write_req(AVDT_CHAN_REPORT, p_scb->p_ccb, p_scb, p_pkt)) {
result = AVDT_SUCCESS;
}
}
}
return result;
}
