/*******************************************************************************
**
** Function avrc_prs_get_elem_attrs_rsp
**
** Description This function parses the Get Element Attributes
** response.
**
** Returns AVRC_STS_NO_ERROR, if the response is parsed successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_prs_get_elem_attrs_rsp (tAVRC_GET_ELEM_ATTRS_RSP *p_rsp, UINT8 *p_data)
{
UINT8 *p_start, *p_len, *p_count;
UINT16 len;
UINT8 xx;
UINT32 attr_id;
if (p_rsp->num_attr == 0)
return AVRC_STS_NO_ERROR;
AVRC_TRACE_API("avrc_prs_get_elem_attrs_rsp num_attr: %d", p_rsp->num_attr);
p_rsp->p_attrs = (tAVRC_ATTR_ENTRY*)malloc(sizeof(tAVRC_ATTR_ENTRY) * p_rsp->num_attr);
for (xx=0; xx<p_rsp->num_attr; xx++)
{
BE_STREAM_TO_UINT32(attr_id, p_data);
if (!AVRC_IS_VALID_MEDIA_ATTRIBUTE(attr_id))
{
AVRC_TRACE_ERROR("avrc_prs_get_elem_attrs_rsp invalid attr id[%d]: %d", xx, attr_id);
continue;
}
p_rsp->p_attrs[xx].attr_id = attr_id;
BE_STREAM_TO_UINT16(p_rsp->p_attrs[xx].name.charset_id, p_data);
BE_STREAM_TO_UINT16(p_rsp->p_attrs[xx].name.str_len, p_data);
p_rsp->p_attrs[xx].name.p_str = (UINT8*)malloc(sizeof(UINT8) * p_rsp->p_attrs[xx].name.str_len);
BE_STREAM_TO_ARRAY(p_data, p_rsp->p_attrs[xx].name.p_str, p_rsp->p_attrs[xx].name.str_len);
AVRC_TRACE_DEBUG("avrc_prs_get_elem_attrs_rsp str_len: %d, str: %s", p_rsp->p_attrs[xx].name.str_len, p_rsp->p_attrs[xx].name.p_str);
}
return AVRC_STS_NO_ERROR;
}
/******************************************************************************
**
** Function avrc_sdp_cback
**
** Description This is the SDP callback function used by A2D_FindService.
** This function will be executed by SDP when the service
** search is completed. If the search is successful, it
** finds the first record in the database that matches the
** UUID of the search. Then retrieves various parameters
** from the record. When it is finished it calls the
** application callback function.
**
** Returns Nothing.
**
******************************************************************************/
static void avrc_sdp_cback(UINT16 status)
{
AVRC_TRACE_API("avrc_sdp_cback status: %d", status);
/* reset service_uuid, so can start another find service */
avrc_cb.service_uuid = 0;
/* return info from sdp record in app callback function */
(*avrc_cb.p_cback) (status);
return;
}
/*******************************************************************************
**
** Function avrc_bld_init_cmd_buffer
**
** Description This function initializes the command buffer based on PDU
**
** Returns NULL, if no GKI buffer or failure to build the message.
** Otherwise, the GKI buffer that contains the initialized message.
**
*******************************************************************************/
static BT_HDR *avrc_bld_init_cmd_buffer(tAVRC_COMMAND *p_cmd)
{
UINT16 offset = 0, chnl = AVCT_DATA_CTRL, len=AVRC_META_CMD_POOL_SIZE;
BT_HDR *p_pkt=NULL;
UINT8 opcode;
opcode = avrc_opcode_from_pdu(p_cmd->pdu);
AVRC_TRACE_API("avrc_bld_init_cmd_buffer: pdu=%x, opcode=%x", p_cmd->pdu, opcode);
switch (opcode)
{
case AVRC_OP_PASS_THRU:
offset = AVRC_MSG_PASS_THRU_OFFSET;
break;
case AVRC_OP_VENDOR:
offset = AVRC_MSG_VENDOR_OFFSET;
break;
}
/* allocate and initialize the buffer */
p_pkt = (BT_HDR *)GKI_getbuf(len);
if (p_pkt)
{
UINT8 *p_data, *p_start;
p_pkt->layer_specific = chnl;
p_pkt->event = opcode;
p_pkt->offset = offset;
p_data = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_start = p_data;
/* pass thru - group navigation - has a two byte op_id, so dont do it here */
if (opcode != AVRC_OP_PASS_THRU)
*p_data++ = p_cmd->pdu;
switch (opcode)
{
case AVRC_OP_VENDOR:
/* reserved 0, packet_type 0 */
UINT8_TO_BE_STREAM(p_data, 0);
/* continue to the next "case to add length */
/* add fixed lenth - 0 */
UINT16_TO_BE_STREAM(p_data, 0);
break;
}
p_pkt->len = (p_data - p_start);
}
p_cmd->cmd.opcode = opcode;
return p_pkt;
}
/*******************************************************************************
**
** Function avrc_bld_set_abs_volume_cmd
**
** Description This function builds the Set Absolute Volume command.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_set_abs_volume_cmd (tAVRC_SET_VOLUME_CMD *p_cmd, BT_HDR *p_pkt)
{
UINT8 *p_data, *p_start;
AVRC_TRACE_API("avrc_bld_set_abs_volume_cmd");
/* get the existing length, if any, and also the num attributes */
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_start + 2; /* pdu + rsvd */
/* add fixed lenth 1 - volume (1) */
UINT16_TO_BE_STREAM(p_data, 1);
UINT8_TO_BE_STREAM(p_data, (AVRC_MAX_VOLUME & p_cmd->volume));
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/******************************************************************************
**
** Function AVRC_FindService
**
** Description This function is called by the application to perform service
** discovery and retrieve AVRCP SDP record information from a
** peer device. Information is returned for the first service
** record found on the server that matches the service UUID.
** The callback function will be executed when service discovery
** is complete. There can only be one outstanding call to
** AVRC_FindService() at a time; the application must wait for
** the callback before it makes another call to the function.
** The application is responsible for allocating memory for the
** discovery database. It is recommended that the size of the
** discovery database be at least 300 bytes. The application
** can deallocate the memory after the callback function has
** executed.
**
** Input Parameters:
** service_uuid: Indicates TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET)
** or CT(UUID_SERVCLASS_AV_REMOTE_CONTROL)
**
** bd_addr: BD address of the peer device.
**
** p_db: SDP discovery database parameters.
**
** p_cback: Pointer to the callback function.
**
** Output Parameters:
** None.
**
** Returns AVRC_SUCCESS if successful.
** AVRC_BAD_PARAMS if discovery database parameters are invalid.
** AVRC_NO_RESOURCES if there are not enough resources to
** perform the service search.
**
******************************************************************************/
UINT16 AVRC_FindService(UINT16 service_uuid, BD_ADDR bd_addr,
tAVRC_SDP_DB_PARAMS *p_db, tAVRC_FIND_CBACK *p_cback)
{
tSDP_UUID uuid_list;
BOOLEAN result = TRUE;
UINT16 a2d_attr_list[] = {ATTR_ID_SERVICE_CLASS_ID_LIST, /* update AVRC_NUM_ATTR, if changed */
ATTR_ID_PROTOCOL_DESC_LIST,
ATTR_ID_BT_PROFILE_DESC_LIST,
ATTR_ID_SERVICE_NAME,
ATTR_ID_SUPPORTED_FEATURES,
ATTR_ID_PROVIDER_NAME
};
AVRC_TRACE_API("AVRC_FindService uuid: %x", service_uuid);
if ( (service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET && service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL) ||
p_db == NULL || p_db->p_db == NULL || p_cback == NULL) {
return AVRC_BAD_PARAM;
}
/* check if it is busy */
if ( avrc_cb.service_uuid == UUID_SERVCLASS_AV_REM_CTRL_TARGET ||
avrc_cb.service_uuid == UUID_SERVCLASS_AV_REMOTE_CONTROL) {
return AVRC_NO_RESOURCES;
}
/* set up discovery database */
uuid_list.len = LEN_UUID_16;
uuid_list.uu.uuid16 = service_uuid;
if (p_db->p_attrs == NULL || p_db->num_attr == 0) {
p_db->p_attrs = a2d_attr_list;
p_db->num_attr = AVRC_NUM_ATTR;
}
result = SDP_InitDiscoveryDb(p_db->p_db, p_db->db_len, 1, &uuid_list, p_db->num_attr,
p_db->p_attrs);
if (result == TRUE) {
/* store service_uuid and discovery db pointer */
avrc_cb.p_db = p_db->p_db;
avrc_cb.service_uuid = service_uuid;
avrc_cb.p_cback = p_cback;
/* perform service search */
result = SDP_ServiceSearchAttributeRequest(bd_addr, p_db->p_db, avrc_sdp_cback);
}
return (result ? AVRC_SUCCESS : AVRC_FAIL);
}
/*******************************************************************************
**
** Function avrc_bld_get_element_attr_cmd
**
** Description This function builds the Get Element Attribute command.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_get_element_attr_cmd (tAVRC_GET_ELEM_ATTRS_CMD *p_cmd, BT_HDR *p_pkt)
{
int i;
UINT8 *p_data, *p_start;
AVRC_TRACE_API("avrc_bld_get_element_attr_cmd num_attr: %d", p_cmd->num_attr);
/* get the existing length, if any, and also the num attributes */
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_start + 2; /* pdu + rsvd */
/* add length */
UINT16_TO_BE_STREAM(p_data, 8 + 1 /* id + attr count */ + p_cmd->num_attr * sizeof(UINT32));
/* Identifier 0x0 (PLAYING) */
UINT64_TO_BE_STREAM(p_data, (UINT64)(0));
/* Attribute count */
UINT8_TO_BE_STREAM(p_data, p_cmd->num_attr);
for (i=0; i<p_cmd->num_attr; i++){
AVRC_TRACE_API("avrc_bld_get_element_attr_cmd attr_id: %d", p_cmd->attrs[i]);
UINT32_TO_BE_STREAM(p_data, p_cmd->attrs[i]);
}
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_vol_change_notfn
**
** Description This function builds the register notification for volume change.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_vol_change_notfn(BT_HDR * p_pkt)
{
UINT8 *p_data, *p_start;
AVRC_TRACE_API("avrc_bld_vol_change");
/* get the existing length, if any, and also the num attributes */
// Set the notify value
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_start + 2; /* pdu + rsvd */
/* add fixed length 5 -*/
UINT16_TO_BE_STREAM(p_data, 5);
UINT8_TO_BE_STREAM(p_data,AVRC_EVT_VOLUME_CHANGE);
UINT32_TO_BE_STREAM(p_data, 0);
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_next_cmd
**
** Description This function builds the Request Continue or Abort command.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_next_cmd (tAVRC_NEXT_CMD *p_cmd, BT_HDR *p_pkt)
{
UINT8 *p_data, *p_start;
AVRC_TRACE_API("avrc_bld_next_cmd");
/* get the existing length, if any, and also the num attributes */
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_start + 2; /* pdu + rsvd */
/* add fixed lenth 1 - pdu_id (1) */
UINT16_TO_BE_STREAM(p_data, 1);
UINT8_TO_BE_STREAM(p_data, p_cmd->target_pdu);
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/******************************************************************************
**
** Function AVRC_AddRecord
**
** Description This function is called to build an AVRCP SDP record.
** Prior to calling this function the application must
** call SDP_CreateRecord() to create an SDP record.
**
** Input Parameters:
** service_uuid: Indicates TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET)
** or CT(UUID_SERVCLASS_AV_REMOTE_CONTROL)
**
** p_service_name: Pointer to a null-terminated character
** string containing the service name.
** If service name is not used set this to NULL.
**
** p_provider_name: Pointer to a null-terminated character
** string containing the provider name.
** If provider name is not used set this to NULL.
**
** categories: Supported categories.
**
** sdp_handle: SDP handle returned by SDP_CreateRecord().
**
** Output Parameters:
** None.
**
** Returns AVRC_SUCCESS if successful.
** AVRC_NO_RESOURCES if not enough resources to build the SDP record.
**
******************************************************************************/
UINT16 AVRC_AddRecord(UINT16 service_uuid, char *p_service_name,
char *p_provider_name, UINT16 categories, UINT32 sdp_handle)
{
UINT16 browse_list[1];
BOOLEAN result = TRUE;
UINT8 temp[8];
UINT8 *p;
UINT16 count = 1;
UINT16 class_list[2];
AVRC_TRACE_API("AVRC_AddRecord uuid: %x", service_uuid);
if( service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET && service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL )
return AVRC_BAD_PARAM;
/* add service class id list */
class_list[0] = service_uuid;
#if SDP_AVRCP_1_5 == TRUE
if( service_uuid == UUID_SERVCLASS_AV_REMOTE_CONTROL )
{
class_list[1] = UUID_SERVCLASS_AV_REM_CTRL_CONTROL;
count = 2;
}
#else
#if SDP_AVRCP_1_4 == TRUE
if( service_uuid == UUID_SERVCLASS_AV_REMOTE_CONTROL )
{
class_list[1] = UUID_SERVCLASS_AV_REM_CTRL_CONTROL;
count = 2;
}
#endif
#endif
result &= SDP_AddServiceClassIdList(sdp_handle, count, class_list);
/* add protocol descriptor list */
result &= SDP_AddProtocolList(sdp_handle, AVRC_NUM_PROTO_ELEMS, (tSDP_PROTOCOL_ELEM *)avrc_proto_list);
/* add profile descriptor list */
#if SDP_AVRCP_1_5 == TRUE
/* additional protocol list to include browsing channel */
result &= SDP_AddAdditionProtoLists( sdp_handle, AVRC_NUM_ADDL_PROTO_ELEMS,
(tSDP_PROTO_LIST_ELEM *)avrc_add_proto_list);
result &= SDP_AddProfileDescriptorList(sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, AVRC_REV_1_5);
#else
#if SDP_AVRCP_1_4 == TRUE
/* additional protocol list to include browsing channel */
result &= SDP_AddAdditionProtoLists( sdp_handle, 1, (tSDP_PROTO_LIST_ELEM *)avrc_add_proto_list);
result &= SDP_AddProfileDescriptorList(sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, AVRC_REV_1_5);
#else
#if AVRC_METADATA_INCLUDED == TRUE
result &= SDP_AddProfileDescriptorList(sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, AVRC_REV_1_3);
#else
result &= SDP_AddProfileDescriptorList(sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, AVRC_REV_1_0);
#endif
#endif
#endif
/* add supported categories */
p = temp;
UINT16_TO_BE_STREAM(p, categories);
result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SUPPORTED_FEATURES, UINT_DESC_TYPE,
(UINT32)2, (UINT8*)temp);
/* add provider name */
if (p_provider_name != NULL)
{
result &= SDP_AddAttribute(sdp_handle, ATTR_ID_PROVIDER_NAME, TEXT_STR_DESC_TYPE,
(UINT32)(strlen(p_provider_name)+1), (UINT8 *) p_provider_name);
}
/* add service name */
if (p_service_name != NULL)
{
result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SERVICE_NAME, TEXT_STR_DESC_TYPE,
(UINT32)(strlen(p_service_name)+1), (UINT8 *) p_service_name);
}
/* add browse group list */
browse_list[0] = UUID_SERVCLASS_PUBLIC_BROWSE_GROUP;
result &= SDP_AddUuidSequence(sdp_handle, ATTR_ID_BROWSE_GROUP_LIST, 1, browse_list);
return (result ? AVRC_SUCCESS : AVRC_FAIL);
}
/*******************************************************************************
**
** Function avrc_pars_vendor_rsp
**
** Description This function parses the vendor specific commands defined by
** Bluetooth SIG
**
** Returns AVRC_STS_NO_ERROR, if the message in p_data is parsed successfully.
** Otherwise, the error code defined by AVRCP 1.4
**
*******************************************************************************/
static tAVRC_STS avrc_pars_vendor_rsp(tAVRC_MSG_VENDOR *p_msg, tAVRC_RESPONSE *p_result)
{
tAVRC_STS status = AVRC_STS_NO_ERROR;
UINT8 *p = p_msg->p_vendor_data;
UINT16 len;
UINT8 xx, yy;
tAVRC_NOTIF_RSP_PARAM *p_param;
tAVRC_APP_SETTING *p_app_set;
tAVRC_APP_SETTING_TEXT *p_app_txt;
tAVRC_ATTR_ENTRY *p_entry;
UINT32 *p_u32;
UINT8 *p_u8;
UINT16 size_needed;
UINT8 eventid=0;
BE_STREAM_TO_UINT8 (p_result->pdu, p);
p++; /* skip the reserved/packe_type byte */
BE_STREAM_TO_UINT16 (len, p);
AVRC_TRACE_DEBUG("avrc_pars_vendor_rsp() ctype:0x%x pdu:0x%x, len:%d/0x%x", p_msg->hdr.ctype, p_result->pdu, len, len);
if (p_msg->hdr.ctype == AVRC_RSP_REJ)
{
p_result->rsp.status = *p;
return p_result->rsp.status;
}
switch (p_result->pdu)
{
/* case AVRC_PDU_REQUEST_CONTINUATION_RSP: 0x40 */
/* case AVRC_PDU_ABORT_CONTINUATION_RSP: 0x41 */
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
case AVRC_PDU_SET_ABSOLUTE_VOLUME: /* 0x50 */
if (len != 1)
status = AVRC_STS_INTERNAL_ERR;
else
{
BE_STREAM_TO_UINT8 (p_result->volume.volume, p);
}
break;
case AVRC_PDU_GET_ELEMENT_ATTR: /* 0x20 */
BE_STREAM_TO_UINT8 (p_result->get_elem_attrs.num_attr, p);
AVRC_TRACE_API("num_attr: %d", p_result->get_elem_attrs.num_attr);
if (len == 0)
status = AVRC_STS_INTERNAL_ERR;
else
{
status = avrc_prs_get_elem_attrs_rsp(&p_result->get_elem_attrs, p);
}
break;
#endif /* (AVRC_ADV_CTRL_INCLUDED == TRUE) */
case AVRC_PDU_REGISTER_NOTIFICATION: /* 0x31 */
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
BE_STREAM_TO_UINT8 (eventid, p);
if(AVRC_EVT_VOLUME_CHANGE==eventid
&& (AVRC_RSP_CHANGED==p_msg->hdr.ctype || AVRC_RSP_INTERIM==p_msg->hdr.ctype
|| AVRC_RSP_REJ==p_msg->hdr.ctype || AVRC_RSP_NOT_IMPL==p_msg->hdr.ctype))
{
p_result->reg_notif.status=p_msg->hdr.ctype;
p_result->reg_notif.event_id=eventid;
BE_STREAM_TO_UINT8 (p_result->reg_notif.param.volume, p);
}
AVRC_TRACE_DEBUG("avrc_pars_vendor_rsp PDU reg notif response:event %x, volume %x",eventid,
p_result->reg_notif.param.volume);
#endif /* (AVRC_ADV_CTRL_INCLUDED == TRUE) */
break;
default:
status = AVRC_STS_BAD_CMD;
break;
}
return status;
}
/*******************************************************************************
**
** Function AVRC_BldCommand
**
** Description This function builds the given AVRCP command to the given
** GKI buffer
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
tAVRC_STS AVRC_BldCommand( tAVRC_COMMAND *p_cmd, BT_HDR **pp_pkt)
{
tAVRC_STS status = AVRC_STS_BAD_PARAM;
BT_HDR *p_pkt;
BOOLEAN alloc = FALSE;
AVRC_TRACE_API("AVRC_BldCommand: pdu=%x status=%x", p_cmd->cmd.pdu, p_cmd->cmd.status);
if (!p_cmd || !pp_pkt)
{
AVRC_TRACE_API("AVRC_BldCommand. Invalid parameters passed. p_cmd=%p, pp_pkt=%p",
p_cmd, pp_pkt);
return AVRC_STS_BAD_PARAM;
}
if (*pp_pkt == NULL)
{
if ((*pp_pkt = avrc_bld_init_cmd_buffer(p_cmd)) == NULL)
{
AVRC_TRACE_API("AVRC_BldCommand: Failed to initialize command buffer");
return AVRC_STS_INTERNAL_ERR;
}
alloc = TRUE;
}
status = AVRC_STS_NO_ERROR;
p_pkt = *pp_pkt;
switch (p_cmd->pdu)
{
case AVRC_PDU_REQUEST_CONTINUATION_RSP: /* 0x40 */
status = avrc_bld_next_cmd(&p_cmd->continu, p_pkt);
break;
case AVRC_PDU_ABORT_CONTINUATION_RSP: /* 0x41 */
status = avrc_bld_next_cmd(&p_cmd->abort, p_pkt);
break;
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
case AVRC_PDU_SET_ABSOLUTE_VOLUME: /* 0x50 */
status = avrc_bld_set_abs_volume_cmd(&p_cmd->volume, p_pkt);
break;
case AVRC_PDU_GET_ELEMENT_ATTR: /* 0x20 */
status = avrc_bld_get_element_attr_cmd(&p_cmd->get_elem_attrs, p_pkt);
break;
#endif
case AVRC_PDU_REGISTER_NOTIFICATION: /* 0x31 */
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
if(AVRC_EVT_VOLUME_CHANGE==p_cmd->reg_notif.event_id)
status=avrc_bld_vol_change_notfn(p_pkt);
#endif
break;
}
if (alloc && (status != AVRC_STS_NO_ERROR) )
{
GKI_freebuf(p_pkt);
*pp_pkt = NULL;
}
AVRC_TRACE_API("AVRC_BldCommand: returning %d", status);
return status;
}
