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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 API of the audio/video distribution transport
* protocol.
*
******************************************************************************/
#include <string.h>
#include "stack/bt_types.h"
#include "common/bt_target.h"
#include "stack/avdt_api.h"
#include "stack/avdtc_api.h"
#include "avdt_int.h"
#include "stack/l2c_api.h"
#include "stack/btm_api.h"
#include "stack/btu.h"
#include "osi/allocator.h"
#if (defined(AVDT_INCLUDED) && AVDT_INCLUDED == TRUE)
/* Control block for AVDT */
#if AVDT_DYNAMIC_MEMORY == FALSE
tAVDT_CB avdt_cb;
#else
tAVDT_CB *avdt_cb_ptr;
#endif
/*******************************************************************************
**
** 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_SCB_DELAY_RPT:
event = AVDT_SCB_DELAY_RPT_RSP_TOUT_EVT;
break;
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_Register
**
** Description This is the system level registration function for the
** AVDTP protocol. This function initializes AVDTP and
** prepares the protocol stack for its use. This function
** must be called once by the system or platform using AVDTP
** before the other functions of the API an be used.
**
**
** Returns void
**
*******************************************************************************/
void AVDT_Register(tAVDT_REG *p_reg, tAVDT_CTRL_CBACK *p_cback)
{
/* register PSM with L2CAP */
L2CA_Register(AVDT_PSM, (tL2CAP_APPL_INFO *) &avdt_l2c_appl);
/* set security level */
BTM_SetSecurityLevel(TRUE, "", BTM_SEC_SERVICE_AVDTP, p_reg->sec_mask,
AVDT_PSM, BTM_SEC_PROTO_AVDT, AVDT_CHAN_SIG);
BTM_SetSecurityLevel(FALSE, "", BTM_SEC_SERVICE_AVDTP, p_reg->sec_mask,
AVDT_PSM, BTM_SEC_PROTO_AVDT, AVDT_CHAN_SIG);
/* do not use security on the media channel */
BTM_SetSecurityLevel(TRUE, "", BTM_SEC_SERVICE_AVDTP_NOSEC, BTM_SEC_NONE,
AVDT_PSM, BTM_SEC_PROTO_AVDT, AVDT_CHAN_MEDIA);
BTM_SetSecurityLevel(FALSE, "", BTM_SEC_SERVICE_AVDTP_NOSEC, BTM_SEC_NONE,
AVDT_PSM, BTM_SEC_PROTO_AVDT, AVDT_CHAN_MEDIA);
#if AVDT_REPORTING == TRUE
/* do not use security on the reporting channel */
BTM_SetSecurityLevel(TRUE, "", BTM_SEC_SERVICE_AVDTP_NOSEC, BTM_SEC_NONE,
AVDT_PSM, BTM_SEC_PROTO_AVDT, AVDT_CHAN_REPORT);
BTM_SetSecurityLevel(FALSE, "", BTM_SEC_SERVICE_AVDTP_NOSEC, BTM_SEC_NONE,
AVDT_PSM, BTM_SEC_PROTO_AVDT, AVDT_CHAN_REPORT);
#endif
/* initialize AVDTP data structures */
avdt_scb_init();
avdt_ccb_init();
avdt_ad_init();
/* copy registration struct */
memcpy(&avdt_cb.rcb, p_reg, sizeof(tAVDT_REG));
avdt_cb.p_conn_cback = p_cback;
}
/*******************************************************************************
**
** Function AVDT_Deregister
**
** Description This function is called to deregister use AVDTP protocol.
** It is called when AVDTP is no longer being used by any
** application in the system. Before this function can be
** called, all streams must be removed with AVDT_RemoveStream().
**
**
** Returns void
**
*******************************************************************************/
void AVDT_Deregister(void)
{
/* deregister PSM with L2CAP */
L2CA_Deregister(AVDT_PSM);
}
/*******************************************************************************
**
** Function AVDT_SINK_Activate
**
** Description Activate SEP of A2DP Sink. In Use parameter is adjusted.
** In Use will be made false in case of activation. A2DP SRC
** will receive in_use as false and can open A2DP Sink
** connection
**
** Returns void.
**
*******************************************************************************/
void AVDT_SINK_Activate(void)
{
tAVDT_SCB *p_scb = &avdt_cb.scb[0];
int i;
AVDT_TRACE_DEBUG("AVDT_SINK_Activate");
/* for all allocated scbs */
for (i = 0; i < AVDT_NUM_SEPS; i++, p_scb++) {
if ((p_scb->allocated) && (p_scb->cs.tsep == AVDT_TSEP_SNK)) {
AVDT_TRACE_DEBUG("AVDT_SINK_Activate found scb");
p_scb->sink_activated = TRUE;
/* update in_use */
p_scb->in_use = FALSE;
break;
}
}
}
/*******************************************************************************
**
** Function AVDT_SINK_Deactivate
**
** Description Deactivate SEP of A2DP Sink. In Use parameter is adjusted.
** In Use will be made TRUE in case of activation. A2DP SRC
** will receive in_use as true and will not open A2DP Sink
** connection
**
** Returns void.
**
*******************************************************************************/
void AVDT_SINK_Deactivate(void)
{
tAVDT_SCB *p_scb = &avdt_cb.scb[0];
int i;
AVDT_TRACE_DEBUG("AVDT_SINK_Deactivate");
/* for all allocated scbs */
for (i = 0; i < AVDT_NUM_SEPS; i++, p_scb++) {
if ((p_scb->allocated) && (p_scb->cs.tsep == AVDT_TSEP_SNK)) {
AVDT_TRACE_DEBUG("AVDT_SINK_Deactivate, found scb");
p_scb->sink_activated = FALSE;
/* update in_use */
p_scb->in_use = TRUE;
break;
}
}
}
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_CreateStream
**
** Description Create a stream endpoint. After a stream endpoint is
** created an application can initiate a connection between
** this endpoint and an endpoint on a peer device. In
** addition, a peer device can discover, get the capabilities,
** and connect to this endpoint.
**
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_CreateStream(UINT8 *p_handle, tAVDT_CS *p_cs)
{
UINT16 result = AVDT_SUCCESS;
tAVDT_SCB *p_scb;
/* Verify parameters; if invalid, return failure */
if (((p_cs->cfg.psc_mask & (~AVDT_PSC)) != 0) || (p_cs->p_ctrl_cback == NULL)) {
result = AVDT_BAD_PARAMS;
}
/* Allocate scb; if no scbs, return failure */
else if ((p_scb = avdt_scb_alloc(p_cs)) == NULL) {
result = AVDT_NO_RESOURCES;
} else {
*p_handle = avdt_scb_to_hdl(p_scb);
}
return result;
}
/*******************************************************************************
**
** 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_DiscoverReq
**
** Description This function initiates a connection to the AVDTP service
** on the peer device, if not already present, and discovers
** the stream endpoints on the peer device. (Please note
** that AVDTP discovery is unrelated to SDP discovery).
** This function can be called at any time regardless of whether
** there is an AVDTP connection to the peer device.
**
** When discovery is complete, an AVDT_DISCOVER_CFM_EVT
** is sent to the application via its callback function.
** The application must not call AVDT_GetCapReq() or
** AVDT_DiscoverReq() again to the same device until
** discovery is complete.
**
** The memory addressed by sep_info is allocated by the
** application. This memory is written to by AVDTP as part
** of the discovery procedure. This memory must remain
** accessible until the application receives the
** AVDT_DISCOVER_CFM_EVT.
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_DiscoverReq(BD_ADDR bd_addr, tAVDT_SEP_INFO *p_sep_info,
UINT8 max_seps, tAVDT_CTRL_CBACK *p_cback)
{
tAVDT_CCB *p_ccb;
UINT16 result = AVDT_SUCCESS;
tAVDT_CCB_EVT evt;
/* find channel control block for this bd addr; if none, allocate one */
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;
}
}
if (result == AVDT_SUCCESS) {
/* make sure no discovery or get capabilities req already in progress */
if (p_ccb->proc_busy) {
result = AVDT_BUSY;
}
/* send event to ccb */
else {
evt.discover.p_sep_info = p_sep_info;
evt.discover.num_seps = max_seps;
evt.discover.p_cback = p_cback;
avdt_ccb_event(p_ccb, AVDT_CCB_API_DISCOVER_REQ_EVT, &evt);
}
}
return result;
}
/*******************************************************************************
**
** Function avdt_get_cap_req
**
** Description internal function to serve both AVDT_GetCapReq and
** AVDT_GetAllCapReq
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
static UINT16 avdt_get_cap_req(BD_ADDR bd_addr, tAVDT_CCB_API_GETCAP *p_evt)
{
tAVDT_CCB *p_ccb = NULL;
UINT16 result = AVDT_SUCCESS;
/* verify SEID */
if ((p_evt->single.seid < AVDT_SEID_MIN) || (p_evt->single.seid > AVDT_SEID_MAX)) {
AVDT_TRACE_ERROR("seid: %d\n", p_evt->single.seid);
result = AVDT_BAD_PARAMS;
}
/* 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;
}
}
if (result == AVDT_SUCCESS) {
/* make sure no discovery or get capabilities req already in progress */
if (p_ccb->proc_busy) {
result = AVDT_BUSY;
}
/* send event to ccb */
else {
avdt_ccb_event(p_ccb, AVDT_CCB_API_GETCAP_REQ_EVT, (tAVDT_CCB_EVT *)p_evt);
}
}
return result;
}
/*******************************************************************************
**
** Function AVDT_GetCapReq
**
** Description This function initiates a connection to the AVDTP service
** on the peer device, if not already present, and gets the
** capabilities of a stream endpoint on the peer device.
** This function can be called at any time regardless of
** whether there is an AVDTP connection to the peer device.
**
** When the procedure is complete, an AVDT_GETCAP_CFM_EVT is
** sent to the application via its callback function. The
** application must not call AVDT_GetCapReq() or
** AVDT_DiscoverReq() again until the procedure is complete.
**
** The memory pointed to by p_cfg is allocated by the
** application. This memory is written to by AVDTP as part
** of the get capabilities procedure. This memory must
** remain accessible until the application receives
** the AVDT_GETCAP_CFM_EVT.
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_GetCapReq(BD_ADDR bd_addr, UINT8 seid, tAVDT_CFG *p_cfg, tAVDT_CTRL_CBACK *p_cback)
{
tAVDT_CCB_API_GETCAP getcap;
getcap.single.seid = seid;
getcap.single.sig_id = AVDT_SIG_GETCAP;
getcap.p_cfg = p_cfg;
getcap.p_cback = p_cback;
return avdt_get_cap_req (bd_addr, &getcap);
}
/*******************************************************************************
**
** Function AVDT_GetAllCapReq
**
** Description This function initiates a connection to the AVDTP service
** on the peer device, if not already present, and gets the
** capabilities of a stream endpoint on the peer device.
** This function can be called at any time regardless of
** whether there is an AVDTP connection to the peer device.
**
** When the procedure is complete, an AVDT_GETCAP_CFM_EVT is
** sent to the application via its callback function. The
** application must not call AVDT_GetCapReq() or
** AVDT_DiscoverReq() again until the procedure is complete.
**
** The memory pointed to by p_cfg is allocated by the
** application. This memory is written to by AVDTP as part
** of the get capabilities procedure. This memory must
** remain accessible until the application receives
** the AVDT_GETCAP_CFM_EVT.
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_GetAllCapReq(BD_ADDR bd_addr, UINT8 seid, tAVDT_CFG *p_cfg, tAVDT_CTRL_CBACK *p_cback)
{
tAVDT_CCB_API_GETCAP getcap;
getcap.single.seid = seid;
getcap.single.sig_id = AVDT_SIG_GET_ALLCAP;
getcap.p_cfg = p_cfg;
getcap.p_cback = p_cback;
return avdt_get_cap_req (bd_addr, &getcap);
}
/*******************************************************************************
**
** 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;
UNUSED(seid);
AVDT_TRACE_DEBUG("%s: delay value: 0x%04x\n", __func__, delay);
/* map handle to scb */
if ((p_scb = avdt_scb_by_hdl(handle)) == NULL) {
result = AVDT_BAD_HANDLE;
} else
/* send event to scb */
{
if ((p_scb->cs.tsep == AVDT_TSEP_SNK) && (p_scb->curr_cfg.psc_mask & AVDT_PSC_DELAY_RPT)) {
evt.apidelay.hdr.seid = p_scb->peer_seid;
evt.apidelay.delay = delay;
avdt_scb_event(p_scb, AVDT_SCB_API_DELAY_RPT_REQ_EVT, &evt);
} else {
AVDT_TRACE_WARNING("%s: peer device does not supported\n", __func__);
result = AVDT_BAD_PARAMS;
}
}
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;
/* 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_StartReq
**
** Description Start one or more stream endpoints. This initiates the
** transfer of media packets for the streams. All stream
** endpoints must previously be opened. When the streams
** are started, an AVDT_START_CFM_EVT is sent to the
** application via the control callback function for each stream.
**
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_StartReq(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_START_REQ_EVT, &evt);
}
}
return result;
}
/*******************************************************************************
**
** 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_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_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_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_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;
/* 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_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;
avdt_scb_event(p_scb, AVDT_SCB_API_WRITE_REQ_EVT, &evt);
}
return result;
}
/*******************************************************************************
**
** Function AVDT_WriteReq
**
** 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.
** 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.
**
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_WriteReq(UINT8 handle, BT_HDR *p_pkt, UINT32 time_stamp, UINT8 m_pt)
{
return AVDT_WriteReqOpt(handle, p_pkt, time_stamp, m_pt, AVDT_DATA_OPT_NONE);
}
/*******************************************************************************
**
** Function AVDT_ConnectReq
**
** Description This function initiates an AVDTP signaling connection
** to the peer device. When the connection is completed, an
** AVDT_CONNECT_IND_EVT is sent to the application via its
** control callback function. If the connection attempt fails
** an AVDT_DISCONNECT_IND_EVT is sent. The security mask
** parameter overrides the outgoing security mask set in
** AVDT_Register().
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_ConnectReq(BD_ADDR bd_addr, UINT8 sec_mask, tAVDT_CTRL_CBACK *p_cback)
{
tAVDT_CCB *p_ccb = NULL;
UINT16 result = AVDT_SUCCESS;
tAVDT_CCB_EVT evt;
/* find channel control block for this bd addr; if none, allocate one */
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;
}
} else if (p_ccb->ll_opened == FALSE) {
AVDT_TRACE_WARNING("AVDT_ConnectReq: CCB LL is in the middle of opening");
/* ccb was already allocated for the incoming signalling. */
result = AVDT_BUSY;
}
if (result == AVDT_SUCCESS) {
/* send event to ccb */
evt.connect.p_cback = p_cback;
evt.connect.sec_mask = sec_mask;
avdt_ccb_event(p_ccb, AVDT_CCB_API_CONNECT_REQ_EVT, &evt);
}
return result;
}
/*******************************************************************************
**
** Function AVDT_DisconnectReq
**
** Description This function disconnect an AVDTP signaling connection
** to the peer device. When disconnected an
** AVDT_DISCONNECT_IND_EVT is sent to the application via its
** control callback function.
**
** Returns AVDT_SUCCESS if successful, otherwise error.
**
*******************************************************************************/
UINT16 AVDT_DisconnectReq(BD_ADDR bd_addr, tAVDT_CTRL_CBACK *p_cback)
{
tAVDT_CCB *p_ccb = NULL;
UINT16 result = AVDT_SUCCESS;
tAVDT_CCB_EVT evt;
/* find channel control block for this bd addr; if none, error */
if ((p_ccb = avdt_ccb_by_bd(bd_addr)) == NULL) {
result = AVDT_BAD_PARAMS;
}
if (result == AVDT_SUCCESS) {
/* send event to ccb */
evt.disconnect.p_cback = p_cback;
avdt_ccb_event(p_ccb, AVDT_CCB_API_DISCONNECT_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_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);
}
#if AVDT_MULTIPLEXING == TRUE
/*******************************************************************************
**
** 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.
**
*******************************************************************************/
extern UINT16 AVDT_SetMediaBuf(UINT8 handle, UINT8 *p_buf, UINT32 buf_len)
{
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 {
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;
}
#endif
#if AVDT_REPORTING == TRUE
/*******************************************************************************
**
** 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 *)osi_malloc(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, (char *)p_data->cname, AVDT_MAX_CNAME_SIZE + 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;
}
#endif
/******************************************************************************
**
** Function AVDT_SetTraceLevel
**
** Description Sets the trace level for AVDT. If 0xff is passed, the
** current trace level is returned.
**
** Input Parameters:
** new_level: The level to set the AVDT tracing to:
** 0xff-returns the current setting.
** 0-turns off tracing.
** >= 1-Errors.
** >= 2-Warnings.
** >= 3-APIs.
** >= 4-Events.
** >= 5-Debug.
**
** Returns The new trace level or current trace level if
** the input parameter is 0xff.
**
******************************************************************************/
UINT8 AVDT_SetTraceLevel (UINT8 new_level)
{
if (new_level != 0xFF) {
avdt_cb.trace_level = new_level;
}
return (avdt_cb.trace_level);
}
/*******************************************************************************
**
** Function AVDT_SetDelayValue
**
** Description Set delay reporting value.
**
** Returns void
**
*******************************************************************************/
void AVDT_SetDelayValue(UINT16 delay_value)
{
avdt_cb.delay_value = delay_value;
}
/*******************************************************************************
**
** Function AVDT_GetDelayValue
**
** Description Get delay reporting value.
**
** Returns delay value
**
*******************************************************************************/
UINT16 AVDT_GetDelayValue(void)
{
return avdt_cb.delay_value;
}
#endif /* #if (defined(AVDT_INCLUDED) && AVDT_INCLUDED == TRUE) */
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