| /****************************************************************************** |
| * |
| * 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 interface file contains the interface to the Audio Video |
| * Distribution Transport Protocol (AVDTP). |
| * |
| ******************************************************************************/ |
| #ifndef AVDT_API_H |
| #define AVDT_API_H |
| |
| #include "bt_types.h" |
| #include "bt_target.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /***************************************************************************** |
| ** Constants |
| *****************************************************************************/ |
| #ifndef AVDT_VERSION |
| #define AVDT_VERSION 0x0102 |
| #endif |
| #define AVDT_VERSION_SYNC 0x0103 |
| |
| /* Maximum size in bytes of the codec capabilities information element. */ |
| #define AVDT_CODEC_SIZE 20 |
| |
| /* API function return value result codes. */ |
| #define AVDT_SUCCESS 0 /* Function successful */ |
| #define AVDT_BAD_PARAMS 1 /* Invalid parameters */ |
| #define AVDT_NO_RESOURCES 2 /* Not enough resources */ |
| #define AVDT_BAD_HANDLE 3 /* Bad handle */ |
| #define AVDT_BUSY 4 /* A procedure is already in progress */ |
| #define AVDT_WRITE_FAIL 5 /* Write failed */ |
| |
| /* The index to access the codec type in codec_info[]. */ |
| #define AVDT_CODEC_TYPE_INDEX 2 |
| |
| /* The size in bytes of a Adaptation Layer header. */ |
| #define AVDT_AL_HDR_SIZE 3 |
| |
| /* The size in bytes of a media packet header. */ |
| #define AVDT_MEDIA_HDR_SIZE 12 |
| |
| /* The handle is used when reporting MULTI_AV specific events */ |
| #define AVDT_MULTI_AV_HANDLE 0xFF |
| |
| /* The number of bytes needed by the protocol stack for the protocol headers |
| ** of a media packet. This is the size of the media packet header, the |
| ** L2CAP packet header and HCI header. |
| */ |
| #define AVDT_MEDIA_OFFSET 23 |
| |
| /* The marker bit is used by the application to mark significant events such |
| ** as frame boundaries in the data stream. This constant is used to check or |
| ** set the marker bit in the m_pt parameter of an AVDT_WriteReq() |
| ** or AVDT_DATA_IND_EVT. |
| */ |
| #define AVDT_MARKER_SET 0x80 |
| |
| /* SEP Type. This indicates the stream endpoint type. */ |
| #define AVDT_TSEP_SRC 0 /* Source SEP */ |
| #define AVDT_TSEP_SNK 1 /* Sink SEP */ |
| #define AVDT_TSEP_INVALID 3 /* Invalid SEP */ |
| |
| /* initiator/acceptor role for adaption */ |
| #define AVDT_INT 0 /* initiator */ |
| #define AVDT_ACP 1 /* acceptor */ |
| |
| /* Media Type of the stream endpoint */ |
| /* The value does not include the reserved 4-bit LSBs field */ |
| #define AVDT_MEDIA_TYPE_AUDIO 0 /* Audio SEP */ |
| #define AVDT_MEDIA_TYPE_VIDEO 1 /* Video SEP */ |
| #define AVDT_MEDIA_TYPE_MULTI 2 /* Multimedia SEP */ |
| |
| /* for reporting packets */ |
| #define AVDT_RTCP_PT_SR 200 /* the packet type - SR (Sender Report) */ |
| #define AVDT_RTCP_PT_RR 201 /* the packet type - RR (Receiver Report) */ |
| #define AVDT_RTCP_PT_SDES 202 /* the packet type - SDES (Source Description) */ |
| typedef uint8_t AVDT_REPORT_TYPE; |
| |
| #define AVDT_RTCP_SDES_CNAME 1 /* SDES item CNAME */ |
| #ifndef AVDT_MAX_CNAME_SIZE |
| #define AVDT_MAX_CNAME_SIZE 28 |
| #endif |
| |
| /* Protocol service capabilities. This indicates the protocol service |
| ** capabilities of a stream endpoint. This value is a mask. |
| ** Multiple values can be combined with a bitwise OR. |
| */ |
| #define AVDT_PSC_TRANS (1<<1) /* Media transport */ |
| #define AVDT_PSC_REPORT (1<<2) /* Reporting */ |
| #define AVDT_PSC_RECOV (1<<3) /* Recovery */ |
| #define AVDT_PSC_HDRCMP (1<<5) /* Header compression */ |
| #define AVDT_PSC_MUX (1<<6) /* Multiplexing */ |
| #define AVDT_PSC_DELAY_RPT (1<<8) /* Delay Report */ |
| |
| /* Recovery type. This indicates the recovery type. */ |
| #define AVDT_RECOV_RFC2733 1 /* RFC2733 recovery */ |
| |
| /* Header compression capabilities. This indicates the header compression |
| ** capabilities. This value is a mask. Multiple values can be combined |
| ** with a bitwise OR. |
| */ |
| #define AVDT_HDRCMP_MEDIA (1<<5) /* Available for media packets */ |
| #define AVDT_HDRCMP_RECOV (1<<6) /* Available for recovery packets */ |
| #define AVDT_HDRCMP_BACKCH (1<<7) /* Back channel supported */ |
| |
| /* Multiplexing capabilities mask. */ |
| #define AVDT_MUX_FRAG (1<<7) /* Allow Adaptation Layer Fragmentation */ |
| |
| /* Application service category. This indicates the application |
| ** service category. |
| */ |
| #define AVDT_ASC_PROTECT 4 /* Content protection */ |
| #define AVDT_ASC_CODEC 7 /* Codec */ |
| |
| /* the content protection IDs assigned by BT SIG */ |
| #define AVDT_CP_SCMS_T_ID 0x0002 |
| #define AVDT_CP_DTCP_ID 0x0001 |
| |
| #define AVDT_CP_LOSC 2 |
| #define AVDT_CP_INFO_LEN 3 |
| |
| #define AVDT_CP_SCMS_COPY_MASK 3 |
| #define AVDT_CP_SCMS_COPY_FREE 2 |
| #define AVDT_CP_SCMS_COPY_ONCE 1 |
| #define AVDT_CP_SCMS_COPY_NEVER 0 |
| |
| /* Error codes. The following are error codes defined in the AVDTP and GAVDP |
| ** specifications. These error codes communicate protocol errors between |
| ** AVDTP and the application. More detailed descriptions of the error codes |
| ** and their appropriate use can be found in the AVDTP and GAVDP specifications. |
| ** These error codes are unrelated to the result values returned by the |
| ** AVDTP API functions. |
| */ |
| #define AVDT_ERR_HEADER 0x01 /* Bad packet header format */ |
| #define AVDT_ERR_LENGTH 0x11 /* Bad packet length */ |
| #define AVDT_ERR_SEID 0x12 /* Invalid SEID */ |
| #define AVDT_ERR_IN_USE 0x13 /* The SEP is in use */ |
| #define AVDT_ERR_NOT_IN_USE 0x14 /* The SEP is not in use */ |
| #define AVDT_ERR_CATEGORY 0x17 /* Bad service category */ |
| #define AVDT_ERR_PAYLOAD 0x18 /* Bad payload format */ |
| #define AVDT_ERR_NSC 0x19 /* Requested command not supported */ |
| #define AVDT_ERR_INVALID_CAP 0x1A /* Reconfigure attempted invalid capabilities */ |
| #define AVDT_ERR_RECOV_TYPE 0x22 /* Requested recovery type not defined */ |
| #define AVDT_ERR_MEDIA_TRANS 0x23 /* Media transport capability not correct */ |
| #define AVDT_ERR_RECOV_FMT 0x25 /* Recovery service capability not correct */ |
| #define AVDT_ERR_ROHC_FMT 0x26 /* Header compression service capability not correct */ |
| #define AVDT_ERR_CP_FMT 0x27 /* Content protection service capability not correct */ |
| #define AVDT_ERR_MUX_FMT 0x28 /* Multiplexing service capability not correct */ |
| #define AVDT_ERR_UNSUP_CFG 0x29 /* Configuration not supported */ |
| #define AVDT_ERR_BAD_STATE 0x31 /* Message cannot be processed in this state */ |
| #define AVDT_ERR_REPORT_FMT 0x65 /* Report service capability not correct */ |
| #define AVDT_ERR_SERVICE 0x80 /* Invalid service category */ |
| #define AVDT_ERR_RESOURCE 0x81 /* Insufficient resources */ |
| #define AVDT_ERR_INVALID_MCT 0xC1 /* Invalid Media Codec Type */ |
| #define AVDT_ERR_UNSUP_MCT 0xC2 /* Unsupported Media Codec Type */ |
| #define AVDT_ERR_INVALID_LEVEL 0xC3 /* Invalid Level */ |
| #define AVDT_ERR_UNSUP_LEVEL 0xC4 /* Unsupported Level */ |
| #define AVDT_ERR_INVALID_CP 0xE0 /* Invalid Content Protection Type */ |
| #define AVDT_ERR_INVALID_FORMAT 0xE1 /* Invalid Content Protection format */ |
| |
| /* Additional error codes. This indicates error codes used by AVDTP |
| ** in addition to the ones defined in the specifications. |
| */ |
| #define AVDT_ERR_CONNECT 0x07 /* Connection failed. */ |
| #define AVDT_ERR_TIMEOUT 0x08 /* Response timeout. */ |
| |
| /* Control callback events. */ |
| #define AVDT_DISCOVER_CFM_EVT 0 /* Discover confirm */ |
| #define AVDT_GETCAP_CFM_EVT 1 /* Get capabilities confirm */ |
| #define AVDT_OPEN_CFM_EVT 2 /* Open confirm */ |
| #define AVDT_OPEN_IND_EVT 3 /* Open indication */ |
| #define AVDT_CONFIG_IND_EVT 4 /* Configuration indication */ |
| #define AVDT_START_CFM_EVT 5 /* Start confirm */ |
| #define AVDT_START_IND_EVT 6 /* Start indication */ |
| #define AVDT_SUSPEND_CFM_EVT 7 /* Suspend confirm */ |
| #define AVDT_SUSPEND_IND_EVT 8 /* Suspend indication */ |
| #define AVDT_CLOSE_CFM_EVT 9 /* Close confirm */ |
| #define AVDT_CLOSE_IND_EVT 10 /* Close indication */ |
| #define AVDT_RECONFIG_CFM_EVT 11 /* Reconfiguration confirm */ |
| #define AVDT_RECONFIG_IND_EVT 12 /* Reconfiguration indication */ |
| #define AVDT_SECURITY_CFM_EVT 13 /* Security confirm */ |
| #define AVDT_SECURITY_IND_EVT 14 /* Security indication */ |
| #define AVDT_WRITE_CFM_EVT 15 /* Write confirm */ |
| #define AVDT_CONNECT_IND_EVT 16 /* Signaling channel connected */ |
| #define AVDT_DISCONNECT_IND_EVT 17 /* Signaling channel disconnected */ |
| #define AVDT_REPORT_CONN_EVT 18 /* Reporting channel connected */ |
| #define AVDT_REPORT_DISCONN_EVT 19 /* Reporting channel disconnected */ |
| #define AVDT_DELAY_REPORT_EVT 20 /* Delay report received */ |
| #define AVDT_DELAY_REPORT_CFM_EVT 21 /* Delay report response received */ |
| |
| #define AVDT_MAX_EVT (AVDT_DELAY_REPORT_CFM_EVT) |
| |
| /* PSM for AVDT */ |
| #define AVDT_PSM 0x0019 |
| |
| /* Nonsupported protocol command messages. This value is used in tAVDT_CS */ |
| #define AVDT_NSC_SUSPEND 0x01 /* Suspend command not supported */ |
| #define AVDT_NSC_RECONFIG 0x02 /* Reconfigure command not supported */ |
| #define AVDT_NSC_SECURITY 0x04 /* Security command not supported */ |
| |
| /***************************************************************************** |
| ** Type Definitions |
| *****************************************************************************/ |
| |
| typedef struct |
| { |
| uint32_t ntp_sec; /* NTP time: seconds relative to 0h UTC on 1 January 1900 */ |
| uint32_t ntp_frac; /* NTP time: the fractional part */ |
| uint32_t rtp_time; /* timestamp in RTP header */ |
| uint32_t pkt_count; /* sender's packet count: since starting transmission |
| * up until the time this SR packet was generated. */ |
| uint32_t octet_count; /* sender's octet count: same comment */ |
| } tAVDT_SENDER_INFO; |
| |
| typedef struct |
| { |
| uint8_t frag_lost; /* fraction lost since last RR */ |
| uint32_t packet_lost; /* cumulative number of packets lost since the beginning */ |
| uint32_t seq_num_rcvd; /* extended highest sequence number received */ |
| uint32_t jitter; /* interarrival jitter */ |
| uint32_t lsr; /* last SR timestamp */ |
| uint32_t dlsr; /* delay since last SR */ |
| } tAVDT_REPORT_BLK; |
| |
| typedef union |
| { |
| tAVDT_SENDER_INFO sr; |
| tAVDT_REPORT_BLK rr; |
| uint8_t cname[AVDT_MAX_CNAME_SIZE + 1]; |
| } tAVDT_REPORT_DATA; |
| |
| /* This structure contains parameters which are set at registration. */ |
| typedef struct { |
| uint16_t ctrl_mtu; /* L2CAP MTU of the AVDTP signaling channel */ |
| uint8_t ret_tout; /* AVDTP signaling retransmission timeout */ |
| uint8_t sig_tout; /* AVDTP signaling message timeout */ |
| uint8_t idle_tout; /* AVDTP idle signaling channel timeout */ |
| uint8_t sec_mask; /* Security mask for BTM_SetSecurityLevel() */ |
| } tAVDT_REG; |
| |
| /* This structure contains the SEP information. This information is |
| ** transferred during the discovery procedure. |
| */ |
| typedef struct { |
| bool in_use; /* true if stream is currently in use */ |
| uint8_t seid; /* Stream endpoint identifier */ |
| uint8_t media_type; /* Media type: AVDT_MEDIA_TYPE_* */ |
| uint8_t tsep; /* SEP type */ |
| } tAVDT_SEP_INFO; |
| |
| /* This structure contains the SEP configuration. */ |
| typedef struct { |
| uint8_t codec_info[AVDT_CODEC_SIZE]; /* Codec capabilities array */ |
| uint8_t protect_info[AVDT_PROTECT_SIZE]; /* Content protection capabilities */ |
| uint8_t num_codec; /* Number of media codec information elements */ |
| uint8_t num_protect; /* Number of content protection information elements */ |
| uint16_t psc_mask; /* Protocol service capabilities mask */ |
| uint8_t recov_type; /* Recovery type */ |
| uint8_t recov_mrws; /* Maximum recovery window size */ |
| uint8_t recov_mnmp; /* Recovery maximum number of media packets */ |
| uint8_t hdrcmp_mask; /* Header compression capabilities */ |
| } tAVDT_CFG; |
| |
| /* Header structure for callback event parameters. */ |
| typedef struct { |
| uint8_t err_code; /* Zero if operation succeeded; nonzero if operation failed */ |
| uint8_t err_param; /* Error parameter included for some events */ |
| uint8_t label; /* Transaction label */ |
| uint8_t seid; /* For internal use only */ |
| uint8_t sig_id; /* For internal use only */ |
| uint8_t ccb_idx; /* For internal use only */ |
| } tAVDT_EVT_HDR; |
| |
| /* This data structure is associated with the AVDT_GETCAP_CFM_EVT, |
| ** AVDT_RECONFIG_IND_EVT, and AVDT_RECONFIG_CFM_EVT. |
| */ |
| typedef struct { |
| tAVDT_EVT_HDR hdr; /* Event header */ |
| tAVDT_CFG *p_cfg; /* Pointer to configuration for this SEP */ |
| } tAVDT_CONFIG; |
| |
| /* This data structure is associated with the AVDT_CONFIG_IND_EVT. */ |
| typedef struct { |
| tAVDT_EVT_HDR hdr; /* Event header */ |
| tAVDT_CFG *p_cfg; /* Pointer to configuration for this SEP */ |
| uint8_t int_seid; /* Stream endpoint ID of stream initiating the operation */ |
| } tAVDT_SETCONFIG; |
| |
| /* This data structure is associated with the AVDT_OPEN_IND_EVT and AVDT_OPEN_CFM_EVT. */ |
| typedef struct { |
| tAVDT_EVT_HDR hdr; /* Event header */ |
| uint16_t peer_mtu; /* Transport channel L2CAP MTU of the peer */ |
| uint16_t lcid; /* L2CAP LCID for media channel */ |
| } tAVDT_OPEN; |
| |
| /* This data structure is associated with the AVDT_SECURITY_IND_EVT |
| ** and AVDT_SECURITY_CFM_EVT. |
| */ |
| typedef struct { |
| tAVDT_EVT_HDR hdr; /* Event header */ |
| uint8_t *p_data; /* Pointer to security data */ |
| uint16_t len; /* Length in bytes of the security data */ |
| } tAVDT_SECURITY; |
| |
| /* This data structure is associated with the AVDT_DISCOVER_CFM_EVT. */ |
| typedef struct { |
| tAVDT_EVT_HDR hdr; /* Event header */ |
| tAVDT_SEP_INFO *p_sep_info; /* Pointer to SEP information */ |
| uint8_t num_seps; /* Number of stream endpoints */ |
| } tAVDT_DISCOVER; |
| |
| /* This data structure is associated with the AVDT_DELAY_REPORT_EVT. */ |
| typedef struct { |
| tAVDT_EVT_HDR hdr; /* Event header */ |
| uint16_t delay; /* Delay value */ |
| } tAVDT_DELAY_RPT; |
| |
| /* Union of all control callback event data structures */ |
| typedef union { |
| tAVDT_EVT_HDR hdr; |
| tAVDT_DISCOVER discover_cfm; |
| tAVDT_CONFIG getcap_cfm; |
| tAVDT_OPEN open_cfm; |
| tAVDT_OPEN open_ind; |
| tAVDT_SETCONFIG config_ind; |
| tAVDT_EVT_HDR start_cfm; |
| tAVDT_EVT_HDR suspend_cfm; |
| tAVDT_EVT_HDR close_cfm; |
| tAVDT_CONFIG reconfig_cfm; |
| tAVDT_CONFIG reconfig_ind; |
| tAVDT_SECURITY security_cfm; |
| tAVDT_SECURITY security_ind; |
| tAVDT_EVT_HDR connect_ind; |
| tAVDT_EVT_HDR disconnect_ind; |
| tAVDT_EVT_HDR report_conn; |
| tAVDT_DELAY_RPT delay_rpt_cmd; |
| } tAVDT_CTRL; |
| |
| /* This is the control callback function. This function passes control events |
| ** to the application. This function is required for all registered stream |
| ** endpoints and for the AVDT_DiscoverReq() and AVDT_GetCapReq() functions. |
| ** |
| */ |
| typedef void (tAVDT_CTRL_CBACK)(uint8_t handle, BD_ADDR bd_addr, uint8_t event, |
| tAVDT_CTRL *p_data); |
| |
| /* This is the data callback function. It is executed when AVDTP has a media |
| ** packet ready for the application. This function is required for SNK |
| ** endpoints and not applicable for SRC endpoints. |
| */ |
| typedef void (tAVDT_SINK_DATA_CBACK)(uint8_t handle, BT_HDR *p_pkt, |
| uint32_t time_stamp, uint8_t m_pt); |
| |
| #if (AVDT_REPORTING == TRUE) |
| /* This is the report callback function. It is executed when AVDTP has a reporting |
| ** packet ready for the application. This function is required for streams |
| ** created with AVDT_PSC_REPORT. |
| */ |
| typedef void (tAVDT_REPORT_CBACK)(uint8_t handle, AVDT_REPORT_TYPE type, |
| tAVDT_REPORT_DATA *p_data); |
| #endif |
| |
| typedef uint16_t (tAVDT_GETCAP_REQ) (BD_ADDR bd_addr, uint8_t seid, tAVDT_CFG *p_cfg, tAVDT_CTRL_CBACK *p_cback); |
| |
| /* This structure contains information required when a stream is created. |
| ** It is passed to the AVDT_CreateStream() function. |
| */ |
| typedef struct { |
| tAVDT_CFG cfg; /* SEP configuration */ |
| tAVDT_CTRL_CBACK *p_ctrl_cback; /* Control callback function */ |
| tAVDT_SINK_DATA_CBACK *p_sink_data_cback; /* Sink data callback function */ |
| #if (AVDT_REPORTING == TRUE) |
| tAVDT_REPORT_CBACK *p_report_cback;/* Report callback function. */ |
| #endif |
| uint16_t mtu; /* The L2CAP MTU of the transport channel */ |
| uint16_t flush_to; /* The L2CAP flush timeout of the transport channel */ |
| uint8_t tsep; /* SEP type */ |
| uint8_t media_type; /* Media type: AVDT_MEDIA_TYPE_* */ |
| uint16_t nsc_mask; /* Nonsupported protocol command messages */ |
| } tAVDT_CS; |
| |
| /* AVDT data option mask is used in the write request */ |
| #define AVDT_DATA_OPT_NONE 0x00 /* No option still add RTP header */ |
| #define AVDT_DATA_OPT_NO_RTP (0x01 << 0) /* Skip adding RTP header */ |
| |
| typedef uint8_t tAVDT_DATA_OPT_MASK; |
| |
| |
| |
| /***************************************************************************** |
| ** External Function Declarations |
| *****************************************************************************/ |
| |
| /******************************************************************************* |
| ** |
| ** 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 |
| ** |
| *******************************************************************************/ |
| extern void AVDT_Register(tAVDT_REG *p_reg, tAVDT_CTRL_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 |
| ** |
| *******************************************************************************/ |
| extern void AVDT_Deregister(void); |
| |
| /******************************************************************************* |
| ** |
| ** Function AVDT_AbortReq |
| ** |
| ** Description Trigger Abort request to pass AVDTP Abort related mandatory |
| ** PTS Test case. |
| ** |
| ** Returns void. |
| ** |
| *******************************************************************************/ |
| extern void AVDT_AbortReq(uint8_t handle); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_CreateStream(uint8_t *p_handle, tAVDT_CS *p_cs); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_RemoveStream(uint8_t handle); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_DiscoverReq(BD_ADDR bd_addr, tAVDT_SEP_INFO *p_sep_info, |
| uint8_t max_seps, tAVDT_CTRL_CBACK *p_cback); |
| |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_GetCapReq(BD_ADDR bd_addr, uint8_t seid, tAVDT_CFG *p_cfg, |
| tAVDT_CTRL_CBACK *p_cback); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_GetAllCapReq(BD_ADDR bd_addr, uint8_t seid, tAVDT_CFG *p_cfg, |
| tAVDT_CTRL_CBACK *p_cback); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_DelayReport(uint8_t handle, uint8_t seid, uint16_t delay); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_OpenReq(uint8_t handle, BD_ADDR bd_addr, uint8_t seid, |
| tAVDT_CFG *p_cfg); |
| |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_ConfigRsp(uint8_t handle, uint8_t label, uint8_t error_code, |
| uint8_t category); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_StartReq(uint8_t *p_handles, uint8_t num_handles); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_SuspendReq(uint8_t *p_handles, uint8_t num_handles); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_CloseReq(uint8_t handle); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_ReconfigReq(uint8_t handle, tAVDT_CFG *p_cfg); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_ReconfigRsp(uint8_t handle, uint8_t label, uint8_t error_code, |
| uint8_t category); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_SecurityReq(uint8_t handle, uint8_t *p_data, uint16_t len); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_SecurityRsp(uint8_t handle, uint8_t label, uint8_t error_code, |
| uint8_t *p_data, uint16_t len); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_WriteReq(uint8_t handle, BT_HDR *p_pkt, uint32_t time_stamp, |
| uint8_t m_pt); |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_WriteReqOpt(uint8_t handle, BT_HDR *p_pkt, uint32_t time_stamp, |
| uint8_t m_pt, tAVDT_DATA_OPT_MASK opt); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_ConnectReq(BD_ADDR bd_addr, uint8_t sec_mask, |
| tAVDT_CTRL_CBACK *p_cback); |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_DisconnectReq(BD_ADDR bd_addr, tAVDT_CTRL_CBACK *p_cback); |
| |
| /******************************************************************************* |
| ** |
| ** Function AVDT_GetL2CapChannel |
| ** |
| ** Description Get the L2CAP CID used by the handle. |
| ** |
| ** Returns CID if successful, otherwise 0. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_GetL2CapChannel(uint8_t handle); |
| |
| /******************************************************************************* |
| ** |
| ** Function AVDT_GetSignalChannel |
| ** |
| ** Description Get the L2CAP CID used by the signal channel of the given handle. |
| ** |
| ** Returns CID if successful, otherwise 0. |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_GetSignalChannel(uint8_t handle, BD_ADDR bd_addr); |
| |
| /******************************************************************************* |
| ** |
| ** Function AVDT_SendReport |
| ** |
| ** Description |
| ** |
| ** |
| ** |
| ** Returns |
| ** |
| *******************************************************************************/ |
| extern uint16_t AVDT_SendReport(uint8_t handle, AVDT_REPORT_TYPE type, |
| tAVDT_REPORT_DATA *p_data); |
| |
| /****************************************************************************** |
| ** |
| ** 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. |
| ** |
| ******************************************************************************/ |
| extern uint8_t AVDT_SetTraceLevel (uint8_t new_level); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| |
| #endif /* AVDT_API_H */ |
