1 /* 2 * Copyright (C) 2022 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #include <stdint.h> 39 #include <string.h> 40 #include "a2dp.h" 41 #include "l2cap.h" 42 #include "classic/sdp_util.h" 43 #include "classic/avdtp_source.h" 44 #include "classic/a2dp_source.h" 45 #include "btstack_event.h" 46 #include "bluetooth_sdp.h" 47 #include "bluetooth_psm.h" 48 49 #define BTSTACK_FILE__ "a2dp.c" 50 51 #include <stddef.h> 52 #include "bluetooth.h" 53 #include "classic/a2dp.h" 54 #include "classic/avdtp_util.h" 55 #include "btstack_debug.h" 56 57 // ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG has been replaced by ENABLE_A2DP_EXPLICIT_CONFIG which is valid for both roles 58 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 59 #error "Please define ENABLE_A2DP_EXPLICIT_CONFIG instead of ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG" 60 #endif 61 62 #define AVDTP_MAX_SEP_NUM 10 63 #define A2DP_SET_CONFIG_DELAY_MS 200 64 65 static void a2dp_config_process_discover_seps_with_next_waiting_connection(void); 66 67 // higher layer callbacks 68 static btstack_packet_handler_t a2dp_source_callback; 69 static btstack_packet_handler_t a2dp_sink_callback; 70 71 // config process - singletons using sep_discovery_cid is used as mutex 72 static avdtp_role_t a2dp_config_process_role; 73 static uint16_t a2dp_config_process_sep_discovery_cid; 74 static uint16_t a2dp_config_process_sep_discovery_count; 75 static uint16_t a2dp_config_process_sep_discovery_index; 76 static avdtp_sep_t a2dp_config_process_sep_discovery_seps[AVDTP_MAX_SEP_NUM]; 77 static btstack_timer_source_t a2dp_config_process_set_config_timer; 78 static bool a2dp_config_process_set_config_timer_active; 79 80 void a2dp_init(void) { 81 } 82 83 void a2dp_deinit(void){ 84 a2dp_config_process_sep_discovery_cid = 0; 85 a2dp_source_callback = NULL; 86 a2dp_sink_callback = NULL; 87 } 88 89 void a2dp_create_sdp_record(uint8_t * service, uint32_t service_record_handle, uint16_t service_class_uuid, uint16_t supported_features, const char * service_name, const char * service_provider_name){ 90 uint8_t* attribute; 91 de_create_sequence(service); 92 93 // 0x0000 "Service Record Handle" 94 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 95 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 96 97 // 0x0001 "Service Class ID List" 98 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 99 attribute = de_push_sequence(service); 100 { 101 de_add_number(attribute, DE_UUID, DE_SIZE_16, service_class_uuid); 102 } 103 de_pop_sequence(service, attribute); 104 105 // 0x0004 "Protocol Descriptor List" 106 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 107 attribute = de_push_sequence(service); 108 { 109 uint8_t* l2cpProtocol = de_push_sequence(attribute); 110 { 111 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 112 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 113 } 114 de_pop_sequence(attribute, l2cpProtocol); 115 116 uint8_t* avProtocol = de_push_sequence(attribute); 117 { 118 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 119 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 120 } 121 de_pop_sequence(attribute, avProtocol); 122 } 123 de_pop_sequence(service, attribute); 124 125 // 0x0005 "Public Browse Group" 126 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 127 attribute = de_push_sequence(service); 128 { 129 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 130 } 131 de_pop_sequence(service, attribute); 132 133 // 0x0009 "Bluetooth Profile Descriptor List" 134 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 135 attribute = de_push_sequence(service); 136 { 137 uint8_t *a2dProfile = de_push_sequence(attribute); 138 { 139 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 140 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 141 } 142 de_pop_sequence(attribute, a2dProfile); 143 } 144 de_pop_sequence(service, attribute); 145 146 147 // 0x0100 "Service Name" 148 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 149 de_add_data(service, DE_STRING, (uint16_t) strlen(service_name), (uint8_t *) service_name); 150 151 // 0x0100 "Provider Name" 152 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 153 de_add_data(service, DE_STRING, (uint16_t)strlen(service_provider_name), (uint8_t *) service_provider_name); 154 155 // 0x0311 "Supported Features" 156 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 157 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 158 } 159 160 uint8_t a2dp_subevent_id_for_avdtp_subevent_id(uint8_t subevent){ 161 switch (subevent){ 162 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 163 return A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION; 164 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 165 return A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION; 166 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 167 return A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION; 168 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 169 return A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION; 170 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 171 return A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION; 172 default: 173 btstack_unreachable(); 174 return 0; 175 } 176 } 177 178 static void a2dp_replace_subevent_id_and_emit(btstack_packet_handler_t callback, uint8_t * packet, uint16_t size, uint8_t subevent_id){ 179 UNUSED(size); 180 btstack_assert(callback != NULL); 181 // cache orig event and subevent id 182 uint8_t orig_event_id = packet[0]; 183 uint8_t orig_subevent_id = packet[2]; 184 // execute callback 185 packet[0] = HCI_EVENT_A2DP_META; 186 packet[2] = subevent_id; 187 (*callback)(HCI_EVENT_PACKET, 0, packet, size); 188 // restore id 189 packet[0] = orig_event_id; 190 packet[2] = orig_subevent_id; 191 } 192 193 void a2dp_register_source_packet_handler(btstack_packet_handler_t callback){ 194 btstack_assert(callback != NULL); 195 a2dp_source_callback = callback; 196 } 197 198 void a2dp_register_sink_packet_handler(btstack_packet_handler_t callback){ 199 btstack_assert(callback != NULL); 200 a2dp_sink_callback = callback; 201 } 202 203 void a2dp_replace_subevent_id_and_emit_source(uint8_t * packet, uint16_t size, uint8_t subevent_id) { 204 a2dp_replace_subevent_id_and_emit(a2dp_source_callback, packet, size, subevent_id); 205 } 206 207 void a2dp_replace_subevent_id_and_emit_sink(uint8_t *packet, uint16_t size, uint8_t subevent_id) { 208 a2dp_replace_subevent_id_and_emit(a2dp_sink_callback, packet, size, subevent_id); 209 } 210 211 static void a2dp_replace_subevent_id_and_emit_for_role(avdtp_role_t role, uint8_t * packet, uint16_t size, uint8_t subevent_id) { 212 if (role == AVDTP_ROLE_SOURCE){ 213 a2dp_replace_subevent_id_and_emit_source(packet, size, subevent_id); 214 } else { 215 a2dp_replace_subevent_id_and_emit_sink(packet, size, subevent_id); 216 } 217 } 218 219 static void a2dp_emit_role(avdtp_role_t role, uint8_t * packet, uint16_t size){ 220 if (role == AVDTP_ROLE_SOURCE){ 221 (*a2dp_source_callback)(HCI_EVENT_PACKET, 0, packet, size); 222 } else { 223 (*a2dp_sink_callback)(HCI_EVENT_PACKET, 0, packet, size); 224 } 225 } 226 227 static void a2dp_emit_stream_event_for_role(avdtp_role_t role, uint16_t cid, uint8_t local_seid, uint8_t subevent_id) { 228 uint8_t event[6]; 229 int pos = 0; 230 event[pos++] = HCI_EVENT_A2DP_META; 231 event[pos++] = sizeof(event) - 2; 232 event[pos++] = subevent_id; 233 little_endian_store_16(event, pos, cid); 234 pos += 2; 235 event[pos++] = local_seid; 236 a2dp_emit_role(role, event, sizeof(event)); 237 } 238 239 static void a2dp_emit_stream_reconfigured_role(avdtp_role_t role, uint16_t cid, uint8_t local_seid, uint8_t status){ 240 uint8_t event[7]; 241 int pos = 0; 242 event[pos++] = HCI_EVENT_A2DP_META; 243 event[pos++] = sizeof(event) - 2; 244 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 245 little_endian_store_16(event, pos, cid); 246 pos += 2; 247 event[pos++] = local_seid; 248 event[pos++] = status; 249 a2dp_emit_role(role, event, sizeof(event)); 250 } 251 252 static void a2dp_emit_streaming_connection_failed_for_role(avdtp_role_t role, avdtp_connection_t *connection, uint8_t status) { 253 uint8_t event[14]; 254 int pos = 0; 255 event[pos++] = HCI_EVENT_A2DP_META; 256 event[pos++] = sizeof(event) - 2; 257 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 258 little_endian_store_16(event, pos, connection->avdtp_cid); 259 pos += 2; 260 reverse_bd_addr(connection->remote_addr, &event[pos]); 261 pos += 6; 262 event[pos++] = 0; 263 event[pos++] = 0; 264 event[pos++] = status; 265 a2dp_emit_role(role, event, sizeof(event)); 266 } 267 268 static a2dp_config_process_t * a2dp_config_process_for_role(avdtp_role_t role, avdtp_connection_t *connection){ 269 return (role == AVDTP_ROLE_SOURCE) ? &connection->a2dp_source_config_process : &connection->a2dp_sink_config_process; 270 } 271 272 static void a2dp_config_process_timer_handler(btstack_timer_source_t * timer){ 273 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 274 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 275 btstack_run_loop_set_timer_context(&a2dp_config_process_set_config_timer, NULL); 276 a2dp_config_process_set_config_timer_active = false; 277 278 log_info("Config timer fired, avdtp_cid 0x%02x", avdtp_cid); 279 280 if (connection == NULL) { 281 a2dp_config_process_discover_seps_with_next_waiting_connection(); 282 return; 283 } 284 a2dp_config_process_t * config_process = a2dp_config_process_for_role(a2dp_config_process_role, connection); 285 if (config_process->stream_endpoint_configured) { 286 a2dp_config_process_discover_seps_with_next_waiting_connection(); 287 return; 288 } 289 290 avdtp_discover_stream_endpoints(avdtp_cid); 291 } 292 293 static void a2dp_config_process_timer_start(uint16_t avdtp_cid){ 294 log_info("Config timer start for cid 0%02x", avdtp_cid); 295 a2dp_config_process_set_config_timer_active = true; 296 btstack_run_loop_remove_timer(&a2dp_config_process_set_config_timer); 297 btstack_run_loop_set_timer_handler(&a2dp_config_process_set_config_timer, a2dp_config_process_timer_handler); 298 btstack_run_loop_set_timer(&a2dp_config_process_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 299 btstack_run_loop_set_timer_context(&a2dp_config_process_set_config_timer, (void *)(uintptr_t)avdtp_cid); 300 btstack_run_loop_add_timer(&a2dp_config_process_set_config_timer); 301 } 302 303 static void a2dp_config_process_timer_restart(void){ 304 log_info("Config timer restart"); 305 btstack_run_loop_remove_timer(&a2dp_config_process_set_config_timer); 306 btstack_run_loop_set_timer(&a2dp_config_process_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 307 btstack_run_loop_add_timer(&a2dp_config_process_set_config_timer); 308 } 309 310 static void a2dp_config_process_timer_stop(void){ 311 if (a2dp_config_process_set_config_timer_active == false) return; 312 log_info("Config timer stop"); 313 btstack_run_loop_remove_timer(&a2dp_config_process_set_config_timer); 314 btstack_run_loop_set_timer_context(&a2dp_config_process_set_config_timer, NULL); 315 a2dp_config_process_set_config_timer_active = false; 316 } 317 318 // Discover seps, both incoming and outgoing 319 static void a2dp_config_process_start_discovering_seps(avdtp_role_t role, avdtp_connection_t *connection) { 320 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 321 322 config_process->state = A2DP_DISCOVER_SEPS; 323 config_process->discover_seps = false; 324 325 a2dp_config_process_role = role; 326 a2dp_config_process_sep_discovery_index = 0; 327 a2dp_config_process_sep_discovery_count = 0; 328 memset(a2dp_config_process_sep_discovery_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 329 a2dp_config_process_sep_discovery_cid = connection->avdtp_cid; 330 331 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 332 if (config_process->outgoing_active){ 333 log_info("discover seps"); 334 avdtp_discover_stream_endpoints(connection->avdtp_cid); 335 } else { 336 log_info("wait a bit, then discover seps"); 337 a2dp_config_process_timer_start(connection->avdtp_cid); 338 } 339 } 340 341 static void a2dp_config_process_discover_seps_with_next_waiting_connection(void){ 342 btstack_assert(a2dp_config_process_sep_discovery_cid == 0); 343 btstack_linked_list_iterator_t it; 344 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 345 while (btstack_linked_list_iterator_has_next(&it)){ 346 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 347 if (next_connection->a2dp_source_config_process.discover_seps) { 348 a2dp_config_process_start_discovering_seps(AVDTP_ROLE_SOURCE, next_connection); 349 } 350 if (next_connection->a2dp_sink_config_process.discover_seps) { 351 a2dp_config_process_start_discovering_seps(AVDTP_ROLE_SINK, next_connection); 352 } 353 } 354 } 355 356 void a2dp_config_process_ready_for_sep_discovery(avdtp_role_t role, avdtp_connection_t *connection) { 357 // start discover seps now if: 358 // - outgoing active: signaling for outgoing connection 359 // - outgoing not active: incoming connection and no sep discover ongoing 360 361 // sep discovery active? 362 if (a2dp_config_process_sep_discovery_cid == 0){ 363 a2dp_config_process_start_discovering_seps(role, connection); 364 } else { 365 // post-pone sep discovery 366 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 367 config_process->discover_seps = true; 368 } 369 } 370 371 static void a2dp_config_process_handle_media_configuration(avdtp_role_t role, const uint8_t *packet, uint8_t local_seid) { 372 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 373 avdtp_connection_t *connection = avdtp_get_connection_for_avdtp_cid(cid); 374 btstack_assert(connection != NULL); 375 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 376 377 config_process->local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 378 // bail out if local seid invalid 379 if (config_process->local_stream_endpoint == NULL) return; 380 381 // stop timer 382 if (a2dp_config_process_sep_discovery_cid == cid) { 383 a2dp_config_process_timer_stop(); 384 a2dp_config_process_sep_discovery_cid = 0; 385 } 386 387 config_process->stream_endpoint_configured = true; 388 389 switch (config_process->state) { 390 case A2DP_W4_SET_CONFIGURATION: 391 // outgoing: discovery and config of remote sink sep successful, trigger stream open 392 config_process->state = A2DP_W2_OPEN_STREAM_WITH_SEID; 393 break; 394 case A2DP_DISCOVER_SEPS: 395 case A2DP_GET_CAPABILITIES: 396 case A2DP_W2_GET_ALL_CAPABILITIES: 397 case A2DP_DISCOVERY_DONE: 398 case A2DP_W4_GET_CONFIGURATION: 399 // incoming: wait for stream open 400 config_process->state = A2DP_W4_OPEN_STREAM_WITH_SEID; 401 break; 402 default: 403 // wait for configuration after sending reconfigure - keep state 404 break; 405 } 406 } 407 408 void a2dp_config_process_set_config(avdtp_role_t role, avdtp_connection_t *connection) { 409 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 410 uint8_t remote_seid = config_process->local_stream_endpoint->set_config_remote_seid; 411 log_info("A2DP initiate set configuration locally and wait for response ... local seid 0x%02x, remote seid 0x%02x", 412 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), remote_seid); 413 config_process->state = A2DP_W4_SET_CONFIGURATION; 414 avdtp_set_configuration(connection->avdtp_cid, 415 avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 416 remote_seid, 417 config_process->local_stream_endpoint->remote_configuration_bitmap, 418 config_process->local_stream_endpoint->remote_configuration); 419 } 420 421 static void 422 a2dp_config_process_handle_media_capability(avdtp_role_t role, uint16_t cid, uint8_t a2dp_subevent_id, uint8_t *packet, uint16_t size) { 423 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(cid); 424 btstack_assert(connection != NULL); 425 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 426 if (config_process->state != A2DP_GET_CAPABILITIES) return; 427 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, a2dp_subevent_id); 428 } 429 430 uint8_t a2dp_config_process_config_init(avdtp_role_t role, avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 431 avdtp_media_codec_type_t codec_type) { 432 433 // check state 434 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 435 switch (config_process->state){ 436 case A2DP_DISCOVERY_DONE: 437 case A2DP_GET_CAPABILITIES: 438 break; 439 default: 440 return ERROR_CODE_COMMAND_DISALLOWED; 441 } 442 443 // lookup local stream endpoint 444 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 445 if (stream_endpoint == NULL){ 446 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 447 } 448 449 // lookup remote stream endpoint 450 avdtp_sep_t * remote_sep = NULL; 451 uint8_t i; 452 for (i=0; i < a2dp_config_process_sep_discovery_count; i++){ 453 if (a2dp_config_process_sep_discovery_seps[i].seid == remote_seid){ 454 remote_sep = &a2dp_config_process_sep_discovery_seps[i]; 455 } 456 } 457 if (remote_sep == NULL){ 458 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 459 } 460 461 // set media configuration 462 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 463 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 464 stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 465 // remote seid to use 466 stream_endpoint->set_config_remote_seid = remote_seid; 467 // enable delay reporting if supported 468 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 469 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 470 } 471 472 // suitable stream endpoint found, configure it 473 config_process->local_stream_endpoint = stream_endpoint; 474 config_process->have_config = true; 475 476 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 477 if (config_process->state == A2DP_DISCOVERY_DONE){ 478 config_process->state = A2DP_SET_CONFIGURATION; 479 } 480 #endif 481 482 return ERROR_CODE_SUCCESS; 483 } 484 void a2dp_config_process_avdtp_event_handler(avdtp_role_t role, uint8_t *packet, uint16_t size) { 485 uint16_t cid; 486 avdtp_connection_t * connection; 487 a2dp_config_process_t * config_process; 488 uint8_t signal_identifier; 489 uint8_t status; 490 uint8_t local_seid; 491 uint8_t remote_seid; 492 493 switch (hci_event_avdtp_meta_get_subevent_code(packet)){ 494 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 495 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 496 connection = avdtp_get_connection_for_avdtp_cid(cid); 497 btstack_assert(connection != NULL); 498 config_process = a2dp_config_process_for_role(role, connection); 499 500 status = avdtp_subevent_signaling_connection_established_get_status(packet); 501 if (status != ERROR_CODE_SUCCESS){ 502 // notify about connection error only if we're initiator 503 if (config_process->outgoing_active){ 504 log_info("A2DP source signaling connection failed status 0x%02x", status); 505 config_process->outgoing_active = false; 506 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 507 } 508 break; 509 } 510 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 511 config_process->state = A2DP_CONNECTED; 512 513 // notify app 514 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 515 516 // Windows 10 as Source starts SEP discovery after 1500 ms, but only if it did not get a Discover command 517 // If BTstack is configured for both roles, we need to avoid sending Discover command in Source Role for outgoing Sink connections 518 519 // For this, we trigger SEP discovery if: 520 // a) this is an outgoing connection 521 // b) this connection wasn't caused by an outgoing connection of the other role 522 if (role == AVDTP_ROLE_SOURCE){ 523 if (connection->a2dp_source_config_process.outgoing_active || !connection->a2dp_sink_config_process.outgoing_active){ 524 a2dp_config_process_ready_for_sep_discovery(AVDTP_ROLE_SOURCE, connection); 525 } 526 } else { 527 if (connection->a2dp_sink_config_process.outgoing_active || !connection->a2dp_source_config_process.outgoing_active){ 528 a2dp_config_process_ready_for_sep_discovery(AVDTP_ROLE_SINK, connection); 529 } 530 } 531 break; 532 533 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 534 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 535 connection = avdtp_get_connection_for_avdtp_cid(cid); 536 btstack_assert(connection != NULL); 537 config_process = a2dp_config_process_for_role(role, connection); 538 539 if (config_process->state == A2DP_DISCOVER_SEPS) { 540 avdtp_sep_t sep; 541 memset(&sep, 0, sizeof(avdtp_sep_t)); 542 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 543 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 544 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 545 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 546 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 547 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 548 a2dp_config_process_sep_discovery_count); 549 avdtp_sep_type_t matching_type = (role == AVDTP_ROLE_SOURCE) ? AVDTP_SINK : AVDTP_SOURCE; 550 if ((sep.type == matching_type) && (sep.in_use == false)) { 551 a2dp_config_process_sep_discovery_seps[a2dp_config_process_sep_discovery_count++] = sep; 552 } 553 } 554 break; 555 556 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 557 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 558 connection = avdtp_get_connection_for_avdtp_cid(cid); 559 btstack_assert(connection != NULL); 560 config_process = a2dp_config_process_for_role(role, connection); 561 562 if (config_process->state != A2DP_DISCOVER_SEPS) break; 563 564 if (a2dp_config_process_sep_discovery_count > 0){ 565 config_process->state = A2DP_GET_CAPABILITIES; 566 a2dp_config_process_sep_discovery_index = 0; 567 config_process->have_config = false; 568 } else { 569 if (config_process->outgoing_active){ 570 config_process->outgoing_active = false; 571 connection = avdtp_get_connection_for_avdtp_cid(cid); 572 btstack_assert(connection != NULL); 573 a2dp_emit_streaming_connection_failed_for_role(role, connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 574 } 575 576 // continue 577 config_process->state = A2DP_CONNECTED; 578 a2dp_config_process_sep_discovery_cid = 0; 579 a2dp_config_process_discover_seps_with_next_waiting_connection(); 580 } 581 break; 582 583 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 584 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 585 connection = avdtp_get_connection_for_avdtp_cid(cid); 586 btstack_assert(connection != NULL); 587 config_process = a2dp_config_process_for_role(role, connection); 588 589 if (config_process->state != A2DP_GET_CAPABILITIES) break; 590 591 // forward codec capability 592 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 593 594 #ifndef ENABLE_A2DP_EXPLICIT_CONFIG 595 // select SEP if none configured yet 596 if (config_process->have_config == false){ 597 // find SBC stream endpoint 598 avdtp_sep_type_t required_sep_type = (role == AVDTP_ROLE_SOURCE) ? AVDTP_SOURCE : AVDTP_SINK; 599 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec_and_type(AVDTP_CODEC_SBC, required_sep_type); 600 if (stream_endpoint != NULL){ 601 // choose SBC config params 602 avdtp_configuration_sbc_t configuration; 603 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 604 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 605 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 606 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 607 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 608 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 609 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 610 611 // and pre-select this endpoint 612 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 613 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 614 a2dp_config_process_set_sbc(role, cid, local_seid, remote_seid, &configuration); 615 } 616 } 617 #endif 618 break; 619 // forward codec capability 620 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 621 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 622 a2dp_config_process_handle_media_capability(role, cid, 623 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY, 624 packet, size); 625 break; 626 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 627 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 628 a2dp_config_process_handle_media_capability(role, cid, 629 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY, 630 packet, size); 631 break; 632 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 633 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 634 a2dp_config_process_handle_media_capability(role, cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY, 635 packet, 636 size); 637 break; 638 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 639 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 640 a2dp_config_process_handle_media_capability(role, cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY, 641 packet, 642 size); 643 break; 644 645 // not forwarded 646 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 647 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 648 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 649 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 650 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 651 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 652 break; 653 654 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 655 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 656 connection = avdtp_get_connection_for_avdtp_cid(cid); 657 btstack_assert(connection != NULL); 658 config_process = a2dp_config_process_for_role(role, connection); 659 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, config_process->state); 660 661 if (config_process->state != A2DP_GET_CAPABILITIES) break; 662 663 // store delay reporting capability 664 a2dp_config_process_sep_discovery_seps[a2dp_config_process_sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 665 666 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 667 break; 668 669 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 670 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 671 connection = avdtp_get_connection_for_avdtp_cid(cid); 672 btstack_assert(connection != NULL); 673 config_process = a2dp_config_process_for_role(role, connection); 674 675 if (config_process->state != A2DP_GET_CAPABILITIES) break; 676 677 // forward capabilities done for endpoint 678 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 679 680 // endpoint was not suitable, check next one if possible 681 a2dp_config_process_sep_discovery_index++; 682 683 if (a2dp_config_process_sep_discovery_index >= a2dp_config_process_sep_discovery_count){ 684 685 // emit 'all capabilities for all seps reported' 686 uint8_t event[6]; 687 uint8_t pos = 0; 688 event[pos++] = HCI_EVENT_A2DP_META; 689 event[pos++] = sizeof(event) - 2; 690 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 691 little_endian_store_16(event, pos, cid); 692 a2dp_emit_role(role, event, sizeof(event)); 693 694 // do we have a valid config? 695 if (config_process->have_config){ 696 config_process->state = A2DP_SET_CONFIGURATION; 697 config_process->have_config = false; 698 break; 699 } 700 701 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 702 config_process->state = A2DP_DISCOVERY_DONE; 703 // TODO call a2dp_discover_seps_with_next_waiting_connection? 704 break; 705 #endif 706 707 // we didn't find a suitable SBC stream endpoint, sorry. 708 if (config_process->outgoing_active){ 709 config_process->outgoing_active = false; 710 connection = avdtp_get_connection_for_avdtp_cid(cid); 711 btstack_assert(connection != NULL); 712 a2dp_emit_streaming_connection_failed_for_role(role, connection, 713 ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 714 } 715 config_process->state = A2DP_CONNECTED; 716 a2dp_config_process_sep_discovery_cid = 0; 717 a2dp_config_process_discover_seps_with_next_waiting_connection(); 718 } 719 break; 720 721 // forward codec configuration 722 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 723 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 724 a2dp_config_process_handle_media_configuration(role, packet, local_seid); 725 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, 726 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 727 break; 728 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 729 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 730 a2dp_config_process_handle_media_configuration(role, packet, local_seid); 731 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, 732 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 733 break; 734 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 735 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 736 a2dp_config_process_handle_media_configuration(role, packet, local_seid); 737 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, 738 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 739 break; 740 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 741 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 742 a2dp_config_process_handle_media_configuration(role, packet, local_seid); 743 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, 744 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 745 break; 746 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 747 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 748 a2dp_config_process_handle_media_configuration(role, packet, local_seid); 749 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, 750 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 751 break; 752 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 753 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 754 connection = avdtp_get_connection_for_avdtp_cid(cid); 755 btstack_assert(connection != NULL); 756 config_process = a2dp_config_process_for_role(role, connection); 757 758 if (config_process->state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 759 760 config_process->outgoing_active = false; 761 status = avdtp_subevent_streaming_connection_established_get_status(packet); 762 if (status != ERROR_CODE_SUCCESS){ 763 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 764 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 765 break; 766 } 767 768 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 769 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 770 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 771 config_process->state = A2DP_STREAMING_OPENED; 772 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 773 break; 774 775 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 776 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 777 connection = avdtp_get_connection_for_avdtp_cid(cid); 778 btstack_assert(connection != NULL); 779 config_process = a2dp_config_process_for_role(role, connection); 780 781 // restart set config timer while remote is active for current cid 782 if (a2dp_config_process_set_config_timer_active && 783 (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && 784 (cid == a2dp_config_process_sep_discovery_cid)){ 785 786 a2dp_config_process_timer_restart(); 787 break; 788 } 789 790 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 791 792 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), config_process->state, cid); 793 794 switch (config_process->state){ 795 case A2DP_GET_CAPABILITIES: 796 remote_seid = a2dp_config_process_sep_discovery_seps[a2dp_config_process_sep_discovery_index].seid; 797 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 798 avdtp_get_all_capabilities(cid, remote_seid, role); 799 return; 800 801 case A2DP_SET_CONFIGURATION: 802 a2dp_config_process_set_config(role, connection); 803 return; 804 805 case A2DP_W2_OPEN_STREAM_WITH_SEID: 806 log_info("A2DP open stream ... local seid 0x%02x, active remote seid 0x%02x", 807 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 808 config_process->local_stream_endpoint->remote_sep.seid); 809 config_process->state = A2DP_W4_OPEN_STREAM_WITH_SEID; 810 avdtp_open_stream(cid, 811 avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 812 config_process->local_stream_endpoint->remote_sep.seid); 813 break; 814 815 case A2DP_W2_RECONFIGURE_WITH_SEID: 816 log_info("A2DP reconfigured ... local seid 0x%02x, active remote seid 0x%02x", 817 avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 818 config_process->local_stream_endpoint->remote_sep.seid); 819 a2dp_emit_stream_reconfigured_role(role, cid, avdtp_stream_endpoint_seid( 820 config_process->local_stream_endpoint), ERROR_CODE_SUCCESS); 821 config_process->state = A2DP_STREAMING_OPENED; 822 break; 823 824 case A2DP_STREAMING_OPENED: 825 switch (signal_identifier){ 826 case AVDTP_SI_START: 827 a2dp_emit_stream_event_for_role(role, cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 828 A2DP_SUBEVENT_STREAM_STARTED); 829 break; 830 case AVDTP_SI_SUSPEND: 831 a2dp_emit_stream_event_for_role(role, cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 832 A2DP_SUBEVENT_STREAM_SUSPENDED); 833 break; 834 case AVDTP_SI_ABORT: 835 case AVDTP_SI_CLOSE: 836 a2dp_emit_stream_event_for_role(role, cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 837 A2DP_SUBEVENT_STREAM_STOPPED); 838 break; 839 #ifdef ENABLE_AVDTP_ACCEPTOR_EXPLICIT_START_STREAM_CONFIRMATION 840 case AVDTP_SI_ACCEPT_START: 841 a2dp_emit_stream_event_for_role(role, cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 842 A2DP_SUBEVENT_START_STREAM_REQUESTED); 843 break; 844 #endif 845 default: 846 break; 847 } 848 break; 849 850 default: 851 break; 852 } 853 break; 854 855 case AVDTP_SUBEVENT_SIGNALING_REJECT: 856 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 857 connection = avdtp_get_connection_for_avdtp_cid(cid); 858 btstack_assert(connection != NULL); 859 config_process = a2dp_config_process_for_role(role, connection); 860 861 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 862 863 switch (config_process->state) { 864 case A2DP_W2_RECONFIGURE_WITH_SEID: 865 log_info("A2DP reconfigure failed ... local seid 0x%02x, active remote seid 0x%02x", 866 avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 867 config_process->local_stream_endpoint->remote_sep.seid); 868 a2dp_emit_stream_reconfigured_role(role, cid, avdtp_stream_endpoint_seid( 869 config_process->local_stream_endpoint), ERROR_CODE_UNSPECIFIED_ERROR); 870 config_process->state = A2DP_STREAMING_OPENED; 871 break; 872 default: 873 config_process->state = A2DP_CONNECTED; 874 break; 875 } 876 877 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 878 break; 879 880 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 881 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 882 connection = avdtp_get_connection_for_avdtp_cid(cid); 883 btstack_assert(connection != NULL); 884 config_process = a2dp_config_process_for_role(role, connection); 885 886 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 887 888 config_process->state = A2DP_CONNECTED; 889 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 890 break; 891 892 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 893 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 894 connection = avdtp_get_connection_for_avdtp_cid(cid); 895 btstack_assert(connection != NULL); 896 config_process = a2dp_config_process_for_role(role, connection); 897 898 config_process->state = A2DP_CONFIGURED; 899 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 900 break; 901 902 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 903 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 904 connection = avdtp_get_connection_for_avdtp_cid(cid); 905 btstack_assert(connection != NULL); 906 config_process = a2dp_config_process_for_role(role, connection); 907 908 // connect/release are passed on to app 909 if (a2dp_config_process_sep_discovery_cid == cid){ 910 a2dp_config_process_timer_stop(); 911 config_process->stream_endpoint_configured = false; 912 config_process->local_stream_endpoint = NULL; 913 914 config_process->state = A2DP_IDLE; 915 a2dp_config_process_sep_discovery_cid = 0; 916 } 917 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 918 break; 919 920 default: 921 break; 922 } 923 } 924 925 uint8_t a2dp_config_process_set_sbc(avdtp_role_t role, uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_sbc_t * configuration){ 926 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 927 if (connection == NULL){ 928 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 929 } 930 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 931 932 uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 933 if (status != 0) { 934 return status; 935 } 936 // set config in reserved buffer 937 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) config_process->local_stream_endpoint->media_codec_info; 938 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 939 avdtp_config_sbc_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 940 941 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 942 a2dp_config_process_set_config(role, connection); 943 #endif 944 945 return ERROR_CODE_SUCCESS; 946 } 947 948 uint8_t a2dp_config_process_set_mpeg_audio(avdtp_role_t role, uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_mpeg_audio_t * configuration){ 949 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 950 if (connection == NULL){ 951 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 952 } 953 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 954 955 uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 956 if (status != 0) { 957 return status; 958 } 959 960 // set config in reserved buffer 961 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *)config_process->local_stream_endpoint->media_codec_info; 962 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 963 avdtp_config_mpeg_audio_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 964 965 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 966 a2dp_config_process_set_config(role, connection); 967 #endif 968 969 return ERROR_CODE_SUCCESS; 970 } 971 972 uint8_t a2dp_config_process_set_mpeg_aac(avdtp_role_t role, uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_mpeg_aac_t * configuration){ 973 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 974 if (connection == NULL){ 975 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 976 } 977 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 978 979 uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 980 if (status != 0) { 981 return status; 982 } 983 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) config_process->local_stream_endpoint->media_codec_info; 984 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 985 avdtp_config_mpeg_aac_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 986 987 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 988 a2dp_config_process_set_config(role, connection); 989 #endif 990 991 return ERROR_CODE_SUCCESS; 992 } 993 994 uint8_t a2dp_config_process_set_atrac(avdtp_role_t role, uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_atrac_t * configuration){ 995 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 996 if (connection == NULL){ 997 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 998 } 999 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 1000 1001 uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 1002 if (status != 0) { 1003 return status; 1004 } 1005 1006 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) config_process->local_stream_endpoint->media_codec_info; 1007 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 1008 avdtp_config_atrac_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 1009 1010 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 1011 a2dp_config_process_set_config(role, connection); 1012 #endif 1013 1014 return ERROR_CODE_SUCCESS; 1015 } 1016 1017 uint8_t a2dp_config_process_set_other(avdtp_role_t role, uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 1018 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 1019 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 1020 if (connection == NULL){ 1021 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1022 } 1023 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 1024 1025 uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 1026 if (status != 0) { 1027 return status; 1028 } 1029 1030 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 1031 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 1032 1033 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 1034 a2dp_config_process_set_config(role, connection); 1035 #endif 1036 1037 return status; 1038 } 1039