1 /****************************************************************************** 2 * 3 * Copyright (C) 2002-2012 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19 /****************************************************************************** 20 * 21 * This interface file contains the interface to the Audio Video 22 * Distribution Transport Protocol (AVDTP). 23 * 24 ******************************************************************************/ 25 #ifndef AVDT_API_H 26 #define AVDT_API_H 27 28 #include "bt_types.h" 29 #include "bt_target.h" 30 31 /***************************************************************************** 32 ** Constants 33 *****************************************************************************/ 34 #ifndef AVDT_VERSION 35 #define AVDT_VERSION 0x0102 36 #endif 37 #define AVDT_VERSION_SYNC 0x0103 38 39 /* API function return value result codes. */ 40 #define AVDT_SUCCESS 0 /* Function successful */ 41 #define AVDT_BAD_PARAMS 1 /* Invalid parameters */ 42 #define AVDT_NO_RESOURCES 2 /* Not enough resources */ 43 #define AVDT_BAD_HANDLE 3 /* Bad handle */ 44 #define AVDT_BUSY 4 /* A procedure is already in progress */ 45 #define AVDT_WRITE_FAIL 5 /* Write failed */ 46 47 /* The index to access the codec type in codec_info[]. */ 48 #define AVDT_CODEC_TYPE_INDEX 2 49 50 /* The size in bytes of a Adaptation Layer header. */ 51 #define AVDT_AL_HDR_SIZE 3 52 53 /* The size in bytes of a media packet header. */ 54 #define AVDT_MEDIA_HDR_SIZE 12 55 56 /* AVDTP 7.5.3 Adaptation Layer Fragmentation 57 * original length of the un-fragmented transport packet should be specified by 58 * two bytes length field of Adaptation Layer Header */ 59 #define AVDT_MAX_MEDIA_SIZE (0xFFFF - AVDT_MEDIA_HDR_SIZE) 60 61 /* The handle is used when reporting MULTI_AV specific events */ 62 #define AVDT_MULTI_AV_HANDLE 0xFF 63 64 /* The number of bytes needed by the protocol stack for the protocol headers 65 ** of a media packet. This is the size of the media packet header, the 66 ** L2CAP packet header and HCI header. 67 */ 68 #define AVDT_MEDIA_OFFSET 23 69 70 /* The marker bit is used by the application to mark significant events such 71 ** as frame boundaries in the data stream. This constant is used to check or 72 ** set the marker bit in the m_pt parameter of an AVDT_WriteReq() 73 ** or AVDT_DATA_IND_EVT. 74 */ 75 #define AVDT_MARKER_SET 0x80 76 77 /* SEP Type. This indicates the stream endpoint type. */ 78 #define AVDT_TSEP_SRC 0 /* Source SEP */ 79 #define AVDT_TSEP_SNK 1 /* Sink SEP */ 80 81 /* initiator/acceptor role for adaption */ 82 #define AVDT_INT 0 /* initiator */ 83 #define AVDT_ACP 1 /* acceptor */ 84 85 /* Media Type. This indicates the media type of the stream endpoint. */ 86 #define AVDT_MEDIA_AUDIO 0 /* Audio SEP */ 87 #define AVDT_MEDIA_VIDEO 1 /* Video SEP */ 88 #define AVDT_MEDIA_MULTI 2 /* Multimedia SEP */ 89 90 /* for reporting packets */ 91 #define AVDT_RTCP_PT_SR 200 /* the packet type - SR (Sender Report) */ 92 #define AVDT_RTCP_PT_RR 201 /* the packet type - RR (Receiver Report) */ 93 #define AVDT_RTCP_PT_SDES 202 /* the packet type - SDES (Source Description) */ 94 typedef UINT8 AVDT_REPORT_TYPE; 95 96 #define AVDT_RTCP_SDES_CNAME 1 /* SDES item CNAME */ 97 #ifndef AVDT_MAX_CNAME_SIZE 98 #define AVDT_MAX_CNAME_SIZE 28 99 #endif 100 101 /* Protocol service capabilities. This indicates the protocol service 102 ** capabilities of a stream endpoint. This value is a mask. 103 ** Multiple values can be combined with a bitwise OR. 104 */ 105 #define AVDT_PSC_TRANS (1<<1) /* Media transport */ 106 #define AVDT_PSC_REPORT (1<<2) /* Reporting */ 107 #define AVDT_PSC_RECOV (1<<3) /* Recovery */ 108 #define AVDT_PSC_HDRCMP (1<<5) /* Header compression */ 109 #define AVDT_PSC_MUX (1<<6) /* Multiplexing */ 110 #define AVDT_PSC_DELAY_RPT (1<<8) /* Delay Report */ 111 112 /* Recovery type. This indicates the recovery type. */ 113 #define AVDT_RECOV_RFC2733 1 /* RFC2733 recovery */ 114 115 /* Header compression capabilities. This indicates the header compression 116 ** capabilities. This value is a mask. Multiple values can be combined 117 ** with a bitwise OR. 118 */ 119 #define AVDT_HDRCMP_MEDIA (1<<5) /* Available for media packets */ 120 #define AVDT_HDRCMP_RECOV (1<<6) /* Available for recovery packets */ 121 #define AVDT_HDRCMP_BACKCH (1<<7) /* Back channel supported */ 122 123 /* Multiplexing capabilities mask. */ 124 #define AVDT_MUX_FRAG (1<<7) /* Allow Adaptation Layer Fragmentation */ 125 126 /* Application service category. This indicates the application 127 ** service category. 128 */ 129 #define AVDT_ASC_PROTECT 4 /* Content protection */ 130 #define AVDT_ASC_CODEC 7 /* Codec */ 131 132 /* Error codes. The following are error codes defined in the AVDTP and GAVDP 133 ** specifications. These error codes communicate protocol errors between 134 ** AVDTP and the application. More detailed descriptions of the error codes 135 ** and their appropriate use can be found in the AVDTP and GAVDP specifications. 136 ** These error codes are unrelated to the result values returned by the 137 ** AVDTP API functions. 138 */ 139 #define AVDT_ERR_HEADER 0x01 /* Bad packet header format */ 140 #define AVDT_ERR_LENGTH 0x11 /* Bad packet length */ 141 #define AVDT_ERR_SEID 0x12 /* Invalid SEID */ 142 #define AVDT_ERR_IN_USE 0x13 /* The SEP is in use */ 143 #define AVDT_ERR_NOT_IN_USE 0x14 /* The SEP is not in use */ 144 #define AVDT_ERR_CATEGORY 0x17 /* Bad service category */ 145 #define AVDT_ERR_PAYLOAD 0x18 /* Bad payload format */ 146 #define AVDT_ERR_NSC 0x19 /* Requested command not supported */ 147 #define AVDT_ERR_INVALID_CAP 0x1A /* Reconfigure attempted invalid capabilities */ 148 #define AVDT_ERR_RECOV_TYPE 0x22 /* Requested recovery type not defined */ 149 #define AVDT_ERR_MEDIA_TRANS 0x23 /* Media transport capability not correct */ 150 #define AVDT_ERR_RECOV_FMT 0x25 /* Recovery service capability not correct */ 151 #define AVDT_ERR_ROHC_FMT 0x26 /* Header compression service capability not correct */ 152 #define AVDT_ERR_CP_FMT 0x27 /* Content protection service capability not correct */ 153 #define AVDT_ERR_MUX_FMT 0x28 /* Multiplexing service capability not correct */ 154 #define AVDT_ERR_UNSUP_CFG 0x29 /* Configuration not supported */ 155 #define AVDT_ERR_BAD_STATE 0x31 /* Message cannot be processed in this state */ 156 #define AVDT_ERR_REPORT_FMT 0x65 /* Report service capability not correct */ 157 #define AVDT_ERR_SERVICE 0x80 /* Invalid service category */ 158 #define AVDT_ERR_RESOURCE 0x81 /* Insufficient resources */ 159 #define AVDT_ERR_INVALID_MCT 0xC1 /* Invalid Media Codec Type */ 160 #define AVDT_ERR_UNSUP_MCT 0xC2 /* Unsupported Media Codec Type */ 161 #define AVDT_ERR_INVALID_LEVEL 0xC3 /* Invalid Level */ 162 #define AVDT_ERR_UNSUP_LEVEL 0xC4 /* Unsupported Level */ 163 #define AVDT_ERR_INVALID_CP 0xE0 /* Invalid Content Protection Type */ 164 #define AVDT_ERR_INVALID_FORMAT 0xE1 /* Invalid Content Protection format */ 165 166 /* Additional error codes. This indicates error codes used by AVDTP 167 ** in addition to the ones defined in the specifications. 168 */ 169 #define AVDT_ERR_CONNECT 0x07 /* Connection failed. */ 170 #define AVDT_ERR_TIMEOUT 0x08 /* Response timeout. */ 171 172 /* Control callback events. */ 173 #define AVDT_DISCOVER_CFM_EVT 0 /* Discover confirm */ 174 #define AVDT_GETCAP_CFM_EVT 1 /* Get capabilities confirm */ 175 #define AVDT_OPEN_CFM_EVT 2 /* Open confirm */ 176 #define AVDT_OPEN_IND_EVT 3 /* Open indication */ 177 #define AVDT_CONFIG_IND_EVT 4 /* Configuration indication */ 178 #define AVDT_START_CFM_EVT 5 /* Start confirm */ 179 #define AVDT_START_IND_EVT 6 /* Start indication */ 180 #define AVDT_SUSPEND_CFM_EVT 7 /* Suspend confirm */ 181 #define AVDT_SUSPEND_IND_EVT 8 /* Suspend indication */ 182 #define AVDT_CLOSE_CFM_EVT 9 /* Close confirm */ 183 #define AVDT_CLOSE_IND_EVT 10 /* Close indication */ 184 #define AVDT_RECONFIG_CFM_EVT 11 /* Reconfiguration confirm */ 185 #define AVDT_RECONFIG_IND_EVT 12 /* Reconfiguration indication */ 186 #define AVDT_SECURITY_CFM_EVT 13 /* Security confirm */ 187 #define AVDT_SECURITY_IND_EVT 14 /* Security indication */ 188 #define AVDT_WRITE_CFM_EVT 15 /* Write confirm */ 189 #define AVDT_CONNECT_IND_EVT 16 /* Signaling channel connected */ 190 #define AVDT_DISCONNECT_IND_EVT 17 /* Signaling channel disconnected */ 191 #define AVDT_REPORT_CONN_EVT 18 /* Reporting channel connected */ 192 #define AVDT_REPORT_DISCONN_EVT 19 /* Reporting channel disconnected */ 193 #define AVDT_DELAY_REPORT_EVT 20 /* Delay report received */ 194 #define AVDT_DELAY_REPORT_CFM_EVT 21 /* Delay report response received */ 195 196 #define AVDT_MAX_EVT (AVDT_DELAY_REPORT_CFM_EVT) 197 198 /* PSM for AVDT */ 199 #define AVDT_PSM 0x0019 200 201 /* Nonsupported protocol command messages. This value is used in tAVDT_CS */ 202 #define AVDT_NSC_SUSPEND 0x01 /* Suspend command not supported */ 203 #define AVDT_NSC_RECONFIG 0x02 /* Reconfigure command not supported */ 204 #define AVDT_NSC_SECURITY 0x04 /* Security command not supported */ 205 206 /***************************************************************************** 207 ** Type Definitions 208 *****************************************************************************/ 209 210 typedef struct 211 { 212 UINT32 ntp_sec; /* NTP time: seconds relative to 0h UTC on 1 January 1900 */ 213 UINT32 ntp_frac; /* NTP time: the fractional part */ 214 UINT32 rtp_time; /* timestamp in RTP header */ 215 UINT32 pkt_count; /* sender's packet count: since starting transmission 216 * up until the time this SR packet was generated. */ 217 UINT32 octet_count; /* sender's octet count: same comment */ 218 } tAVDT_SENDER_INFO; 219 220 typedef struct 221 { 222 UINT8 frag_lost; /* fraction lost since last RR */ 223 UINT32 packet_lost; /* cumulative number of packets lost since the beginning */ 224 UINT32 seq_num_rcvd; /* extended highest sequence number received */ 225 UINT32 jitter; /* interarrival jitter */ 226 UINT32 lsr; /* last SR timestamp */ 227 UINT32 dlsr; /* delay since last SR */ 228 } tAVDT_REPORT_BLK; 229 230 typedef union 231 { 232 tAVDT_SENDER_INFO sr; 233 tAVDT_REPORT_BLK rr; 234 UINT8 cname[AVDT_MAX_CNAME_SIZE + 1]; 235 } tAVDT_REPORT_DATA; 236 237 /* This structure contains parameters which are set at registration. */ 238 typedef struct { 239 UINT16 ctrl_mtu; /* L2CAP MTU of the AVDTP signaling channel */ 240 UINT8 ret_tout; /* AVDTP signaling retransmission timeout */ 241 UINT8 sig_tout; /* AVDTP signaling message timeout */ 242 UINT8 idle_tout; /* AVDTP idle signaling channel timeout */ 243 UINT8 sec_mask; /* Security mask for BTM_SetSecurityLevel() */ 244 } tAVDT_REG; 245 246 /* This structure contains the SEP information. This information is 247 ** transferred during the discovery procedure. 248 */ 249 typedef struct { 250 BOOLEAN in_use; /* TRUE if stream is currently in use */ 251 UINT8 seid; /* Stream endpoint identifier */ 252 UINT8 media_type; /* Media type */ 253 UINT8 tsep; /* SEP type */ 254 } tAVDT_SEP_INFO; 255 256 /* This structure contains the SEP configuration. */ 257 typedef struct { 258 UINT8 codec_info[AVDT_CODEC_SIZE]; /* Codec capabilities array */ 259 UINT8 protect_info[AVDT_PROTECT_SIZE]; /* Content protection capabilities */ 260 UINT8 num_codec; /* Number of media codec information elements */ 261 UINT8 num_protect; /* Number of content protection information elements */ 262 UINT16 psc_mask; /* Protocol service capabilities mask */ 263 UINT8 recov_type; /* Recovery type */ 264 UINT8 recov_mrws; /* Maximum recovery window size */ 265 UINT8 recov_mnmp; /* Recovery maximum number of media packets */ 266 UINT8 hdrcmp_mask; /* Header compression capabilities */ 267 #if AVDT_MULTIPLEXING == TRUE 268 UINT8 mux_mask; /* Multiplexing capabilities. AVDT_MUX_XXX bits can be combined with a bitwise OR */ 269 UINT8 mux_tsid_media; /* TSID for media transport session */ 270 UINT8 mux_tcid_media; /* TCID for media transport session */ 271 UINT8 mux_tsid_report; /* TSID for reporting transport session */ 272 UINT8 mux_tcid_report; /* TCID for reporting transport session */ 273 UINT8 mux_tsid_recov; /* TSID for recovery transport session */ 274 UINT8 mux_tcid_recov; /* TCID for recovery transport session */ 275 #endif 276 } tAVDT_CFG; 277 278 /* Header structure for callback event parameters. */ 279 typedef struct { 280 UINT8 err_code; /* Zero if operation succeeded; nonzero if operation failed */ 281 UINT8 err_param; /* Error parameter included for some events */ 282 UINT8 label; /* Transaction label */ 283 UINT8 seid; /* For internal use only */ 284 UINT8 sig_id; /* For internal use only */ 285 UINT8 ccb_idx; /* For internal use only */ 286 } tAVDT_EVT_HDR; 287 288 /* This data structure is associated with the AVDT_GETCAP_CFM_EVT, 289 ** AVDT_RECONFIG_IND_EVT, and AVDT_RECONFIG_CFM_EVT. 290 */ 291 typedef struct { 292 tAVDT_EVT_HDR hdr; /* Event header */ 293 tAVDT_CFG *p_cfg; /* Pointer to configuration for this SEP */ 294 } tAVDT_CONFIG; 295 296 /* This data structure is associated with the AVDT_CONFIG_IND_EVT. */ 297 typedef struct { 298 tAVDT_EVT_HDR hdr; /* Event header */ 299 tAVDT_CFG *p_cfg; /* Pointer to configuration for this SEP */ 300 UINT8 int_seid; /* Stream endpoint ID of stream initiating the operation */ 301 } tAVDT_SETCONFIG; 302 303 /* This data structure is associated with the AVDT_OPEN_IND_EVT and AVDT_OPEN_CFM_EVT. */ 304 typedef struct { 305 tAVDT_EVT_HDR hdr; /* Event header */ 306 UINT16 peer_mtu; /* Transport channel L2CAP MTU of the peer */ 307 UINT16 lcid; /* L2CAP LCID for media channel */ 308 } tAVDT_OPEN; 309 310 /* This data structure is associated with the AVDT_SECURITY_IND_EVT 311 ** and AVDT_SECURITY_CFM_EVT. 312 */ 313 typedef struct { 314 tAVDT_EVT_HDR hdr; /* Event header */ 315 UINT8 *p_data; /* Pointer to security data */ 316 UINT16 len; /* Length in bytes of the security data */ 317 } tAVDT_SECURITY; 318 319 /* This data structure is associated with the AVDT_DISCOVER_CFM_EVT. */ 320 typedef struct { 321 tAVDT_EVT_HDR hdr; /* Event header */ 322 tAVDT_SEP_INFO *p_sep_info; /* Pointer to SEP information */ 323 UINT8 num_seps; /* Number of stream endpoints */ 324 } tAVDT_DISCOVER; 325 326 /* This data structure is associated with the AVDT_DELAY_REPORT_EVT. */ 327 typedef struct { 328 tAVDT_EVT_HDR hdr; /* Event header */ 329 UINT16 delay; /* Delay value */ 330 } tAVDT_DELAY_RPT; 331 332 /* Union of all control callback event data structures */ 333 typedef union { 334 tAVDT_EVT_HDR hdr; 335 tAVDT_DISCOVER discover_cfm; 336 tAVDT_CONFIG getcap_cfm; 337 tAVDT_OPEN open_cfm; 338 tAVDT_OPEN open_ind; 339 tAVDT_SETCONFIG config_ind; 340 tAVDT_EVT_HDR start_cfm; 341 tAVDT_EVT_HDR suspend_cfm; 342 tAVDT_EVT_HDR close_cfm; 343 tAVDT_CONFIG reconfig_cfm; 344 tAVDT_CONFIG reconfig_ind; 345 tAVDT_SECURITY security_cfm; 346 tAVDT_SECURITY security_ind; 347 tAVDT_EVT_HDR connect_ind; 348 tAVDT_EVT_HDR disconnect_ind; 349 tAVDT_EVT_HDR report_conn; 350 tAVDT_DELAY_RPT delay_rpt_cmd; 351 } tAVDT_CTRL; 352 353 /* This is the control callback function. This function passes control events 354 ** to the application. This function is required for all registered stream 355 ** endpoints and for the AVDT_DiscoverReq() and AVDT_GetCapReq() functions. 356 ** 357 */ 358 typedef void (tAVDT_CTRL_CBACK)(UINT8 handle, BD_ADDR bd_addr, UINT8 event, 359 tAVDT_CTRL *p_data); 360 361 /* This is the data callback function. It is executed when AVDTP has a media 362 ** packet ready for the application. This function is required for SNK 363 ** endpoints and not applicable for SRC endpoints. 364 */ 365 typedef void (tAVDT_DATA_CBACK)(UINT8 handle, BT_HDR *p_pkt, UINT32 time_stamp, 366 UINT8 m_pt); 367 368 #if AVDT_MULTIPLEXING == TRUE 369 /* This is the second version of the data callback function. This version uses 370 ** application buffer assigned by AVDT_SetMediaBuf. Caller can assign different 371 ** buffer during callback or can leave the current buffer for further using. 372 ** This callback is called when AVDTP has a media packet ready for the application. 373 ** This function is required for SNK endpoints and not applicable for SRC endpoints. 374 */ 375 typedef void (tAVDT_MEDIA_CBACK)(UINT8 handle, UINT8 *p_payload, UINT32 payload_len, 376 UINT32 time_stamp, UINT16 seq_num, UINT8 m_pt, UINT8 marker); 377 #endif 378 379 #if AVDT_REPORTING == TRUE 380 /* This is the report callback function. It is executed when AVDTP has a reporting 381 ** packet ready for the application. This function is required for streams 382 ** created with AVDT_PSC_REPORT. 383 */ 384 typedef void (tAVDT_REPORT_CBACK)(UINT8 handle, AVDT_REPORT_TYPE type, 385 tAVDT_REPORT_DATA *p_data); 386 #endif 387 388 typedef UINT16 (tAVDT_GETCAP_REQ) (BD_ADDR bd_addr, UINT8 seid, tAVDT_CFG *p_cfg, tAVDT_CTRL_CBACK *p_cback); 389 390 /* This structure contains information required when a stream is created. 391 ** It is passed to the AVDT_CreateStream() function. 392 */ 393 typedef struct { 394 tAVDT_CFG cfg; /* SEP configuration */ 395 tAVDT_CTRL_CBACK *p_ctrl_cback; /* Control callback function */ 396 tAVDT_DATA_CBACK *p_data_cback; /* Data callback function */ 397 #if AVDT_MULTIPLEXING == TRUE 398 tAVDT_MEDIA_CBACK *p_media_cback; /* Media callback function. It will be called only if p_data_cback is NULL */ 399 #endif 400 #if AVDT_REPORTING == TRUE 401 tAVDT_REPORT_CBACK *p_report_cback;/* Report callback function. */ 402 #endif 403 UINT16 mtu; /* The L2CAP MTU of the transport channel */ 404 UINT16 flush_to; /* The L2CAP flush timeout of the transport channel */ 405 UINT8 tsep; /* SEP type */ 406 UINT8 media_type; /* Media type */ 407 UINT16 nsc_mask; /* Nonsupported protocol command messages */ 408 } tAVDT_CS; 409 410 /* AVDT data option mask is used in the write request */ 411 #define AVDT_DATA_OPT_NONE 0x00 /* No option still add RTP header */ 412 #define AVDT_DATA_OPT_NO_RTP (0x01 << 0) /* Skip adding RTP header */ 413 414 typedef UINT8 tAVDT_DATA_OPT_MASK; 415 416 417 418 /***************************************************************************** 419 ** External Function Declarations 420 *****************************************************************************/ 421 #ifdef __cplusplus 422 extern "C" 423 { 424 #endif 425 426 /******************************************************************************* 427 ** 428 ** Function AVDT_Register 429 ** 430 ** Description This is the system level registration function for the 431 ** AVDTP protocol. This function initializes AVDTP and 432 ** prepares the protocol stack for its use. This function 433 ** must be called once by the system or platform using AVDTP 434 ** before the other functions of the API an be used. 435 ** 436 ** 437 ** Returns void 438 ** 439 *******************************************************************************/ 440 AVDT_API extern void AVDT_Register(tAVDT_REG *p_reg, tAVDT_CTRL_CBACK *p_cback); 441 442 /******************************************************************************* 443 ** 444 ** Function AVDT_Deregister 445 ** 446 ** Description This function is called to deregister use AVDTP protocol. 447 ** It is called when AVDTP is no longer being used by any 448 ** application in the system. Before this function can be 449 ** called, all streams must be removed with AVDT_RemoveStream(). 450 ** 451 ** 452 ** Returns void 453 ** 454 *******************************************************************************/ 455 AVDT_API extern void AVDT_Deregister(void); 456 457 458 /******************************************************************************* 459 ** 460 ** Function AVDT_SINK_Activate 461 ** 462 ** Description Activate SEP of A2DP Sink. In Use parameter is adjusted. 463 ** In Use will be made false in case of activation. A2DP SRC 464 ** will receive in_use as false and can open A2DP Sink 465 ** connection 466 ** 467 ** Returns void 468 ** 469 *******************************************************************************/ 470 AVDT_API extern void AVDT_SINK_Activate(void); 471 472 /******************************************************************************* 473 ** 474 ** Function AVDT_SINK_Deactivate 475 ** 476 ** Description Deactivate SEP of A2DP Sink. In Use parameter is adjusted. 477 ** In Use will be made TRUE in case of activation. A2DP SRC 478 ** will receive in_use as true and will not open A2DP Sink 479 ** connection 480 ** 481 ** Returns void. 482 ** 483 *******************************************************************************/ 484 AVDT_API extern void AVDT_SINK_Deactivate(void); 485 486 /******************************************************************************* 487 ** 488 ** Function AVDT_CreateStream 489 ** 490 ** Description Create a stream endpoint. After a stream endpoint is 491 ** created an application can initiate a connection between 492 ** this endpoint and an endpoint on a peer device. In 493 ** addition, a peer device can discover, get the capabilities, 494 ** and connect to this endpoint. 495 ** 496 ** 497 ** Returns AVDT_SUCCESS if successful, otherwise error. 498 ** 499 *******************************************************************************/ 500 AVDT_API extern UINT16 AVDT_CreateStream(UINT8 *p_handle, tAVDT_CS *p_cs); 501 502 /******************************************************************************* 503 ** 504 ** Function AVDT_RemoveStream 505 ** 506 ** Description Remove a stream endpoint. This function is called when 507 ** the application is no longer using a stream endpoint. 508 ** If this function is called when the endpoint is connected 509 ** the connection is closed and then the stream endpoint 510 ** is removed. 511 ** 512 ** 513 ** Returns AVDT_SUCCESS if successful, otherwise error. 514 ** 515 *******************************************************************************/ 516 AVDT_API extern UINT16 AVDT_RemoveStream(UINT8 handle); 517 518 /******************************************************************************* 519 ** 520 ** Function AVDT_DiscoverReq 521 ** 522 ** Description This function initiates a connection to the AVDTP service 523 ** on the peer device, if not already present, and discovers 524 ** the stream endpoints on the peer device. (Please note 525 ** that AVDTP discovery is unrelated to SDP discovery). 526 ** This function can be called at any time regardless of whether 527 ** there is an AVDTP connection to the peer device. 528 ** 529 ** When discovery is complete, an AVDT_DISCOVER_CFM_EVT 530 ** is sent to the application via its callback function. 531 ** The application must not call AVDT_GetCapReq() or 532 ** AVDT_DiscoverReq() again to the same device until 533 ** discovery is complete. 534 ** 535 ** The memory addressed by sep_info is allocated by the 536 ** application. This memory is written to by AVDTP as part 537 ** of the discovery procedure. This memory must remain 538 ** accessible until the application receives the 539 ** AVDT_DISCOVER_CFM_EVT. 540 ** 541 ** Returns AVDT_SUCCESS if successful, otherwise error. 542 ** 543 *******************************************************************************/ 544 AVDT_API extern UINT16 AVDT_DiscoverReq(BD_ADDR bd_addr, tAVDT_SEP_INFO *p_sep_info, 545 UINT8 max_seps, tAVDT_CTRL_CBACK *p_cback); 546 547 548 /******************************************************************************* 549 ** 550 ** Function AVDT_GetCapReq 551 ** 552 ** Description This function initiates a connection to the AVDTP service 553 ** on the peer device, if not already present, and gets the 554 ** capabilities of a stream endpoint on the peer device. 555 ** This function can be called at any time regardless of 556 ** whether there is an AVDTP connection to the peer device. 557 ** 558 ** When the procedure is complete, an AVDT_GETCAP_CFM_EVT is 559 ** sent to the application via its callback function. The 560 ** application must not call AVDT_GetCapReq() or 561 ** AVDT_DiscoverReq() again until the procedure is complete. 562 ** 563 ** The memory pointed to by p_cfg is allocated by the 564 ** application. This memory is written to by AVDTP as part 565 ** of the get capabilities procedure. This memory must 566 ** remain accessible until the application receives 567 ** the AVDT_GETCAP_CFM_EVT. 568 ** 569 ** Returns AVDT_SUCCESS if successful, otherwise error. 570 ** 571 *******************************************************************************/ 572 AVDT_API extern UINT16 AVDT_GetCapReq(BD_ADDR bd_addr, UINT8 seid, tAVDT_CFG *p_cfg, 573 tAVDT_CTRL_CBACK *p_cback); 574 575 /******************************************************************************* 576 ** 577 ** Function AVDT_GetAllCapReq 578 ** 579 ** Description This function initiates a connection to the AVDTP service 580 ** on the peer device, if not already present, and gets the 581 ** capabilities of a stream endpoint on the peer device. 582 ** This function can be called at any time regardless of 583 ** whether there is an AVDTP connection to the peer device. 584 ** 585 ** When the procedure is complete, an AVDT_GETCAP_CFM_EVT is 586 ** sent to the application via its callback function. The 587 ** application must not call AVDT_GetCapReq() or 588 ** AVDT_DiscoverReq() again until the procedure is complete. 589 ** 590 ** The memory pointed to by p_cfg is allocated by the 591 ** application. This memory is written to by AVDTP as part 592 ** of the get capabilities procedure. This memory must 593 ** remain accessible until the application receives 594 ** the AVDT_GETCAP_CFM_EVT. 595 ** 596 ** Returns AVDT_SUCCESS if successful, otherwise error. 597 ** 598 *******************************************************************************/ 599 AVDT_API extern UINT16 AVDT_GetAllCapReq(BD_ADDR bd_addr, UINT8 seid, tAVDT_CFG *p_cfg, 600 tAVDT_CTRL_CBACK *p_cback); 601 602 /******************************************************************************* 603 ** 604 ** Function AVDT_DelayReport 605 ** 606 ** Description This functions sends a Delay Report to the peer device 607 ** that is associated with a particular SEID. 608 ** This function is called by SNK device. 609 ** 610 ** Returns AVDT_SUCCESS if successful, otherwise error. 611 ** 612 *******************************************************************************/ 613 AVDT_API extern UINT16 AVDT_DelayReport(UINT8 handle, UINT8 seid, UINT16 delay); 614 615 /******************************************************************************* 616 ** 617 ** Function AVDT_OpenReq 618 ** 619 ** Description This function initiates a connection to the AVDTP service 620 ** on the peer device, if not already present, and connects 621 ** to a stream endpoint on a peer device. When the connection 622 ** is completed, an AVDT_OPEN_CFM_EVT is sent to the 623 ** application via the control callback function for this handle. 624 ** 625 ** Returns AVDT_SUCCESS if successful, otherwise error. 626 ** 627 *******************************************************************************/ 628 AVDT_API extern UINT16 AVDT_OpenReq(UINT8 handle, BD_ADDR bd_addr, UINT8 seid, 629 tAVDT_CFG *p_cfg); 630 631 632 /******************************************************************************* 633 ** 634 ** Function AVDT_ConfigRsp 635 ** 636 ** Description Respond to a configure request from the peer device. This 637 ** function must be called if the application receives an 638 ** AVDT_CONFIG_IND_EVT through its control callback. 639 ** 640 ** 641 ** Returns AVDT_SUCCESS if successful, otherwise error. 642 ** 643 *******************************************************************************/ 644 AVDT_API extern UINT16 AVDT_ConfigRsp(UINT8 handle, UINT8 label, UINT8 error_code, 645 UINT8 category); 646 647 /******************************************************************************* 648 ** 649 ** Function AVDT_StartReq 650 ** 651 ** Description Start one or more stream endpoints. This initiates the 652 ** transfer of media packets for the streams. All stream 653 ** endpoints must previously be opened. When the streams 654 ** are started, an AVDT_START_CFM_EVT is sent to the 655 ** application via the control callback function for each stream. 656 ** 657 ** 658 ** Returns AVDT_SUCCESS if successful, otherwise error. 659 ** 660 *******************************************************************************/ 661 AVDT_API extern UINT16 AVDT_StartReq(UINT8 *p_handles, UINT8 num_handles); 662 663 /******************************************************************************* 664 ** 665 ** Function AVDT_SuspendReq 666 ** 667 ** Description Suspend one or more stream endpoints. This suspends the 668 ** transfer of media packets for the streams. All stream 669 ** endpoints must previously be open and started. When the 670 ** streams are suspended, an AVDT_SUSPEND_CFM_EVT is sent to 671 ** the application via the control callback function for 672 ** each stream. 673 ** 674 ** 675 ** Returns AVDT_SUCCESS if successful, otherwise error. 676 ** 677 *******************************************************************************/ 678 AVDT_API extern UINT16 AVDT_SuspendReq(UINT8 *p_handles, UINT8 num_handles); 679 680 /******************************************************************************* 681 ** 682 ** Function AVDT_CloseReq 683 ** 684 ** Description Close a stream endpoint. This stops the transfer of media 685 ** packets and closes the transport channel associated with 686 ** this stream endpoint. When the stream is closed, an 687 ** AVDT_CLOSE_CFM_EVT is sent to the application via the 688 ** control callback function for this handle. 689 ** 690 ** 691 ** Returns AVDT_SUCCESS if successful, otherwise error. 692 ** 693 *******************************************************************************/ 694 AVDT_API extern UINT16 AVDT_CloseReq(UINT8 handle); 695 696 /******************************************************************************* 697 ** 698 ** Function AVDT_ReconfigReq 699 ** 700 ** Description Reconfigure a stream endpoint. This allows the application 701 ** to change the codec or content protection capabilities of 702 ** a stream endpoint after it has been opened. This function 703 ** can only be called if the stream is opened but not started 704 ** or if the stream has been suspended. When the procedure 705 ** is completed, an AVDT_RECONFIG_CFM_EVT is sent to the 706 ** application via the control callback function for this handle. 707 ** 708 ** 709 ** Returns AVDT_SUCCESS if successful, otherwise error. 710 ** 711 *******************************************************************************/ 712 AVDT_API extern UINT16 AVDT_ReconfigReq(UINT8 handle, tAVDT_CFG *p_cfg); 713 714 /******************************************************************************* 715 ** 716 ** Function AVDT_ReconfigRsp 717 ** 718 ** Description Respond to a reconfigure request from the peer device. 719 ** This function must be called if the application receives 720 ** an AVDT_RECONFIG_IND_EVT through its control callback. 721 ** 722 ** 723 ** Returns AVDT_SUCCESS if successful, otherwise error. 724 ** 725 *******************************************************************************/ 726 AVDT_API extern UINT16 AVDT_ReconfigRsp(UINT8 handle, UINT8 label, UINT8 error_code, 727 UINT8 category); 728 729 /******************************************************************************* 730 ** 731 ** Function AVDT_SecurityReq 732 ** 733 ** Description Send a security request to the peer device. When the 734 ** security procedure is completed, an AVDT_SECURITY_CFM_EVT 735 ** is sent to the application via the control callback function 736 ** for this handle. (Please note that AVDTP security procedures 737 ** are unrelated to Bluetooth link level security.) 738 ** 739 ** 740 ** Returns AVDT_SUCCESS if successful, otherwise error. 741 ** 742 *******************************************************************************/ 743 AVDT_API extern UINT16 AVDT_SecurityReq(UINT8 handle, UINT8 *p_data, UINT16 len); 744 745 /******************************************************************************* 746 ** 747 ** Function AVDT_SecurityRsp 748 ** 749 ** Description Respond to a security request from the peer device. 750 ** This function must be called if the application receives 751 ** an AVDT_SECURITY_IND_EVT through its control callback. 752 ** (Please note that AVDTP security procedures are unrelated 753 ** to Bluetooth link level security.) 754 ** 755 ** 756 ** Returns AVDT_SUCCESS if successful, otherwise error. 757 ** 758 *******************************************************************************/ 759 AVDT_API extern UINT16 AVDT_SecurityRsp(UINT8 handle, UINT8 label, UINT8 error_code, 760 UINT8 *p_data, UINT16 len); 761 762 /******************************************************************************* 763 ** 764 ** Function AVDT_WriteReq 765 ** 766 ** Description Send a media packet to the peer device. The stream must 767 ** be started before this function is called. Also, this 768 ** function can only be called if the stream is a SRC. 769 ** 770 ** When AVDTP has sent the media packet and is ready for the 771 ** next packet, an AVDT_WRITE_CFM_EVT is sent to the 772 ** application via the control callback. The application must 773 ** wait for the AVDT_WRITE_CFM_EVT before it makes the next 774 ** call to AVDT_WriteReq(). If the applications calls 775 ** AVDT_WriteReq() before it receives the event the packet 776 ** will not be sent. The application may make its first call 777 ** to AVDT_WriteReq() after it receives an AVDT_START_CFM_EVT 778 ** or AVDT_START_IND_EVT. 779 ** 780 ** The application passes the packet using the BT_HDR structure. 781 ** This structure is described in section 2.1. The offset 782 ** field must be equal to or greater than AVDT_MEDIA_OFFSET. 783 ** This allows enough space in the buffer for the L2CAP and 784 ** AVDTP headers. 785 ** 786 ** The memory pointed to by p_pkt must be a GKI buffer 787 ** allocated by the application. This buffer will be freed 788 ** by the protocol stack; the application must not free 789 ** this buffer. 790 ** 791 ** 792 ** Returns AVDT_SUCCESS if successful, otherwise error. 793 ** 794 *******************************************************************************/ 795 AVDT_API extern UINT16 AVDT_WriteReq(UINT8 handle, BT_HDR *p_pkt, UINT32 time_stamp, 796 UINT8 m_pt); 797 /******************************************************************************* 798 ** 799 ** Function AVDT_WriteReqOpt 800 ** 801 ** Description Send a media packet to the peer device. The stream must 802 ** be started before this function is called. Also, this 803 ** function can only be called if the stream is a SRC 804 ** 805 ** When AVDTP has sent the media packet and is ready for the 806 ** next packet, an AVDT_WRITE_CFM_EVT is sent to the 807 ** application via the control callback. The application must 808 ** wait for the AVDT_WRITE_CFM_EVT before it makes the next 809 ** call to AVDT_WriteReq(). If the applications calls 810 ** AVDT_WriteReq() before it receives the event the packet 811 ** will not be sent. The application may make its first call 812 ** to AVDT_WriteReq() after it receives an AVDT_START_CFM_EVT 813 ** or AVDT_START_IND_EVT. 814 ** 815 ** The application passes the packet using the BT_HDR structure 816 ** This structure is described in section 2.1. The offset 817 ** field must be equal to or greater than AVDT_MEDIA_OFFSET 818 ** (if NO_RTP is specified, L2CAP_MIN_OFFSET can be used) 819 ** This allows enough space in the buffer for the L2CAP and 820 ** AVDTP headers. 821 ** 822 ** The memory pointed to by p_pkt must be a GKI buffer 823 ** allocated by the application. This buffer will be freed 824 ** by the protocol stack; the application must not free 825 ** this buffer. 826 ** 827 ** The opt parameter allows passing specific options like: 828 ** - NO_RTP : do not add the RTP header to buffer 829 ** 830 ** Returns AVDT_SUCCESS if successful, otherwise error. 831 ** 832 *******************************************************************************/ 833 AVDT_API extern UINT16 AVDT_WriteReqOpt(UINT8 handle, BT_HDR *p_pkt, UINT32 time_stamp, 834 UINT8 m_pt, tAVDT_DATA_OPT_MASK opt); 835 836 /******************************************************************************* 837 ** 838 ** Function AVDT_ConnectReq 839 ** 840 ** Description This function initiates an AVDTP signaling connection 841 ** to the peer device. When the connection is completed, an 842 ** AVDT_CONNECT_IND_EVT is sent to the application via its 843 ** control callback function. If the connection attempt fails 844 ** an AVDT_DISCONNECT_IND_EVT is sent. The security mask 845 ** parameter overrides the outgoing security mask set in 846 ** AVDT_Register(). 847 ** 848 ** Returns AVDT_SUCCESS if successful, otherwise error. 849 ** 850 *******************************************************************************/ 851 AVDT_API extern UINT16 AVDT_ConnectReq(BD_ADDR bd_addr, UINT8 sec_mask, 852 tAVDT_CTRL_CBACK *p_cback); 853 854 /******************************************************************************* 855 ** 856 ** Function AVDT_DisconnectReq 857 ** 858 ** Description This function disconnect an AVDTP signaling connection 859 ** to the peer device. When disconnected an 860 ** AVDT_DISCONNECT_IND_EVT is sent to the application via its 861 ** control callback function. 862 ** 863 ** Returns AVDT_SUCCESS if successful, otherwise error. 864 ** 865 *******************************************************************************/ 866 AVDT_API extern UINT16 AVDT_DisconnectReq(BD_ADDR bd_addr, tAVDT_CTRL_CBACK *p_cback); 867 868 /******************************************************************************* 869 ** 870 ** Function AVDT_GetL2CapChannel 871 ** 872 ** Description Get the L2CAP CID used by the handle. 873 ** 874 ** Returns CID if successful, otherwise 0. 875 ** 876 *******************************************************************************/ 877 AVDT_API extern UINT16 AVDT_GetL2CapChannel(UINT8 handle); 878 879 /******************************************************************************* 880 ** 881 ** Function AVDT_GetSignalChannel 882 ** 883 ** Description Get the L2CAP CID used by the signal channel of the given handle. 884 ** 885 ** Returns CID if successful, otherwise 0. 886 ** 887 *******************************************************************************/ 888 AVDT_API extern UINT16 AVDT_GetSignalChannel(UINT8 handle, BD_ADDR bd_addr); 889 890 /******************************************************************************* 891 ** 892 ** Function AVDT_WriteDataReq 893 ** 894 ** Description Send a media packet to the peer device. The stream must 895 ** be started before this function is called. Also, this 896 ** function can only be called if the stream is a SRC. 897 ** 898 ** When AVDTP has sent the media packet and is ready for the 899 ** next packet, an AVDT_WRITE_CFM_EVT is sent to the 900 ** application via the control callback. The application must 901 ** wait for the AVDT_WRITE_CFM_EVT before it makes the next 902 ** call to AVDT_WriteDataReq(). If the applications calls 903 ** AVDT_WriteDataReq() before it receives the event the packet 904 ** will not be sent. The application may make its first call 905 ** to AVDT_WriteDataReq() after it receives an 906 ** AVDT_START_CFM_EVT or AVDT_START_IND_EVT. 907 ** 908 ** Returns AVDT_SUCCESS if successful, otherwise error. 909 ** 910 *******************************************************************************/ 911 AVDT_API extern UINT16 AVDT_WriteDataReq(UINT8 handle, UINT8 *p_data, UINT32 data_len, 912 UINT32 time_stamp, UINT8 m_pt, UINT8 marker); 913 914 /******************************************************************************* 915 ** 916 ** Function AVDT_SetMediaBuf 917 ** 918 ** Description Assigns buffer for media packets or forbids using of assigned 919 ** buffer if argument p_buf is NULL. This function can only 920 ** be called if the stream is a SNK. 921 ** 922 ** AVDTP uses this buffer to reassemble fragmented media packets. 923 ** When AVDTP receives a complete media packet, it calls the 924 ** p_media_cback assigned by AVDT_CreateStream(). 925 ** This function can be called during callback to assign a 926 ** different buffer for next media packet or can leave the current 927 ** buffer for next packet. 928 ** 929 ** Returns AVDT_SUCCESS if successful, otherwise error. 930 ** 931 *******************************************************************************/ 932 AVDT_API extern UINT16 AVDT_SetMediaBuf(UINT8 handle, UINT8 *p_buf, UINT32 buf_len); 933 934 /******************************************************************************* 935 ** 936 ** Function AVDT_SendReport 937 ** 938 ** Description 939 ** 940 ** 941 ** 942 ** Returns 943 ** 944 *******************************************************************************/ 945 AVDT_API extern UINT16 AVDT_SendReport(UINT8 handle, AVDT_REPORT_TYPE type, 946 tAVDT_REPORT_DATA *p_data); 947 948 /****************************************************************************** 949 ** 950 ** Function AVDT_SetTraceLevel 951 ** 952 ** Description Sets the trace level for AVDT. If 0xff is passed, the 953 ** current trace level is returned. 954 ** 955 ** Input Parameters: 956 ** new_level: The level to set the AVDT tracing to: 957 ** 0xff-returns the current setting. 958 ** 0-turns off tracing. 959 ** >= 1-Errors. 960 ** >= 2-Warnings. 961 ** >= 3-APIs. 962 ** >= 4-Events. 963 ** >= 5-Debug. 964 ** 965 ** Returns The new trace level or current trace level if 966 ** the input parameter is 0xff. 967 ** 968 ******************************************************************************/ 969 AVDT_API extern UINT8 AVDT_SetTraceLevel (UINT8 new_level); 970 971 #ifdef __cplusplus 972 } 973 #endif 974 975 976 #endif /* AVDT_API_H */ 977
