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 #define BTSTACK_FILE__ "a2dp.c" 39 40 #include <stdint.h> 41 #include <string.h> 42 #include "a2dp.h" 43 #include "l2cap.h" 44 #include "classic/sdp_util.h" 45 #include "classic/avdtp_source.h" 46 #include "classic/a2dp_source.h" 47 #include "btstack_event.h" 48 #include "bluetooth_sdp.h" 49 #include "bluetooth_psm.h" 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54 #include "classic/avdtp_util.h" 55 #include "btstack_debug.h" 56 57 // ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG has been replaced by ENABLE_A2DP_EXPLICIT_CONFIG which is valid for both roles 58 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 59 #error "Please define ENABLE_A2DP_EXPLICIT_CONFIG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, 0x0104); 141 } 142 de_pop_sequence(attribute, a2dProfile); 143 } 144 de_pop_sequence(service, attribute); 145 146 147 // 0x0100 "Service Name" 148 if (strlen(service_name) > 0){ 149 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 150 de_add_data(service, DE_STRING, (uint16_t) strlen(service_name), (uint8_t *) service_name); 151 } 152 153 // 0x0100 "Provider Name" 154 if (strlen(service_provider_name) > 0) { 155 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 156 de_add_data(service, DE_STRING, (uint16_t) strlen(service_provider_name), (uint8_t *) service_provider_name); 157 } 158 159 // 0x0311 "Supported Features" 160 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 161 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 162 } 163 164 uint8_t a2dp_subevent_id_for_avdtp_subevent_id(uint8_t subevent){ 165 switch (subevent){ 166 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 167 return A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION; 168 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 169 return A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION; 170 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 171 return A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION; 172 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 173 return A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION; 174 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 175 return A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION; 176 default: 177 btstack_unreachable(); 178 return 0; 179 } 180 } 181 182 static void a2dp_replace_subevent_id_and_emit(btstack_packet_handler_t callback, uint8_t * packet, uint16_t size, uint8_t subevent_id){ 183 UNUSED(size); 184 btstack_assert(callback != NULL); 185 // cache orig event and subevent id 186 uint8_t orig_event_id = packet[0]; 187 uint8_t orig_subevent_id = packet[2]; 188 // execute callback 189 packet[0] = HCI_EVENT_A2DP_META; 190 packet[2] = subevent_id; 191 (*callback)(HCI_EVENT_PACKET, 0, packet, size); 192 // restore id 193 packet[0] = orig_event_id; 194 packet[2] = orig_subevent_id; 195 } 196 197 void a2dp_register_source_packet_handler(btstack_packet_handler_t callback){ 198 btstack_assert(callback != NULL); 199 a2dp_source_callback = callback; 200 } 201 202 void a2dp_register_sink_packet_handler(btstack_packet_handler_t callback){ 203 btstack_assert(callback != NULL); 204 a2dp_sink_callback = callback; 205 } 206 207 void a2dp_replace_subevent_id_and_emit_source(uint8_t * packet, uint16_t size, uint8_t subevent_id) { 208 a2dp_replace_subevent_id_and_emit(a2dp_source_callback, packet, size, subevent_id); 209 } 210 211 void a2dp_replace_subevent_id_and_emit_sink(uint8_t *packet, uint16_t size, uint8_t subevent_id) { 212 a2dp_replace_subevent_id_and_emit(a2dp_sink_callback, packet, size, subevent_id); 213 } 214 215 static void a2dp_replace_subevent_id_and_emit_for_role(avdtp_role_t role, uint8_t * packet, uint16_t size, uint8_t subevent_id) { 216 if (role == AVDTP_ROLE_SOURCE){ 217 a2dp_replace_subevent_id_and_emit_source(packet, size, subevent_id); 218 } else { 219 a2dp_replace_subevent_id_and_emit_sink(packet, size, subevent_id); 220 } 221 } 222 223 static void a2dp_emit_role(avdtp_role_t role, uint8_t * packet, uint16_t size){ 224 if (role == AVDTP_ROLE_SOURCE){ 225 (*a2dp_source_callback)(HCI_EVENT_PACKET, 0, packet, size); 226 } else { 227 (*a2dp_sink_callback)(HCI_EVENT_PACKET, 0, packet, size); 228 } 229 } 230 231 static void a2dp_emit_stream_event_for_role(avdtp_role_t role, uint16_t cid, uint8_t local_seid, uint8_t subevent_id) { 232 uint8_t event[6]; 233 int pos = 0; 234 event[pos++] = HCI_EVENT_A2DP_META; 235 event[pos++] = sizeof(event) - 2; 236 event[pos++] = subevent_id; 237 little_endian_store_16(event, pos, cid); 238 pos += 2; 239 event[pos++] = local_seid; 240 a2dp_emit_role(role, event, sizeof(event)); 241 } 242 243 static void a2dp_emit_stream_reconfigured_role(avdtp_role_t role, uint16_t cid, uint8_t local_seid, uint8_t status){ 244 uint8_t event[7]; 245 int pos = 0; 246 event[pos++] = HCI_EVENT_A2DP_META; 247 event[pos++] = sizeof(event) - 2; 248 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 249 little_endian_store_16(event, pos, cid); 250 pos += 2; 251 event[pos++] = local_seid; 252 event[pos++] = status; 253 a2dp_emit_role(role, event, sizeof(event)); 254 } 255 256 static void a2dp_emit_streaming_connection_failed_for_role(avdtp_role_t role, avdtp_connection_t *connection, uint8_t status) { 257 uint8_t event[14]; 258 int pos = 0; 259 event[pos++] = HCI_EVENT_A2DP_META; 260 event[pos++] = sizeof(event) - 2; 261 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 262 little_endian_store_16(event, pos, connection->avdtp_cid); 263 pos += 2; 264 reverse_bd_addr(connection->remote_addr, &event[pos]); 265 pos += 6; 266 event[pos++] = 0; 267 event[pos++] = 0; 268 event[pos++] = status; 269 a2dp_emit_role(role, event, sizeof(event)); 270 } 271 272 static a2dp_config_process_t * a2dp_config_process_for_role(avdtp_role_t role, avdtp_connection_t *connection){ 273 return (role == AVDTP_ROLE_SOURCE) ? &connection->a2dp_source_config_process : &connection->a2dp_sink_config_process; 274 } 275 276 static void a2dp_config_process_timer_handler(btstack_timer_source_t * timer){ 277 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 278 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 279 btstack_run_loop_set_timer_context(&a2dp_config_process_set_config_timer, NULL); 280 a2dp_config_process_set_config_timer_active = false; 281 282 log_info("Config timer fired, avdtp_cid 0x%02x", avdtp_cid); 283 284 if (connection == NULL) { 285 a2dp_config_process_discover_seps_with_next_waiting_connection(); 286 return; 287 } 288 a2dp_config_process_t * config_process = a2dp_config_process_for_role(a2dp_config_process_role, connection); 289 if (config_process->stream_endpoint_configured) { 290 a2dp_config_process_discover_seps_with_next_waiting_connection(); 291 return; 292 } 293 294 avdtp_discover_stream_endpoints(avdtp_cid); 295 } 296 297 static void a2dp_config_process_timer_start(uint16_t avdtp_cid){ 298 log_info("Config timer start for cid 0%02x", avdtp_cid); 299 a2dp_config_process_set_config_timer_active = true; 300 btstack_run_loop_remove_timer(&a2dp_config_process_set_config_timer); 301 btstack_run_loop_set_timer_handler(&a2dp_config_process_set_config_timer, a2dp_config_process_timer_handler); 302 btstack_run_loop_set_timer(&a2dp_config_process_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 303 btstack_run_loop_set_timer_context(&a2dp_config_process_set_config_timer, (void *)(uintptr_t)avdtp_cid); 304 btstack_run_loop_add_timer(&a2dp_config_process_set_config_timer); 305 } 306 307 static void a2dp_config_process_timer_restart(void){ 308 log_info("Config timer restart"); 309 btstack_run_loop_remove_timer(&a2dp_config_process_set_config_timer); 310 btstack_run_loop_set_timer(&a2dp_config_process_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 311 btstack_run_loop_add_timer(&a2dp_config_process_set_config_timer); 312 } 313 314 static void a2dp_config_process_timer_stop(void){ 315 if (a2dp_config_process_set_config_timer_active == false) return; 316 log_info("Config timer stop"); 317 btstack_run_loop_remove_timer(&a2dp_config_process_set_config_timer); 318 btstack_run_loop_set_timer_context(&a2dp_config_process_set_config_timer, NULL); 319 a2dp_config_process_set_config_timer_active = false; 320 } 321 322 // Discover seps, both incoming and outgoing 323 static void a2dp_config_process_start_discovering_seps(avdtp_role_t role, avdtp_connection_t *connection) { 324 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 325 326 config_process->state = A2DP_DISCOVER_SEPS; 327 config_process->discover_seps = false; 328 329 a2dp_config_process_role = role; 330 a2dp_config_process_sep_discovery_index = 0; 331 a2dp_config_process_sep_discovery_count = 0; 332 memset(a2dp_config_process_sep_discovery_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 333 a2dp_config_process_sep_discovery_cid = connection->avdtp_cid; 334 335 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 336 if (config_process->outgoing_active){ 337 log_info("discover seps"); 338 avdtp_discover_stream_endpoints(connection->avdtp_cid); 339 } else { 340 log_info("wait a bit, then discover seps"); 341 a2dp_config_process_timer_start(connection->avdtp_cid); 342 } 343 } 344 345 static void a2dp_config_process_discover_seps_with_next_waiting_connection(void){ 346 btstack_assert(a2dp_config_process_sep_discovery_cid == 0); 347 btstack_linked_list_iterator_t it; 348 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 349 while (btstack_linked_list_iterator_has_next(&it)){ 350 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 351 if (next_connection->a2dp_source_config_process.discover_seps) { 352 a2dp_config_process_start_discovering_seps(AVDTP_ROLE_SOURCE, next_connection); 353 } 354 if (next_connection->a2dp_sink_config_process.discover_seps) { 355 a2dp_config_process_start_discovering_seps(AVDTP_ROLE_SINK, next_connection); 356 } 357 } 358 } 359 360 void a2dp_config_process_ready_for_sep_discovery(avdtp_role_t role, avdtp_connection_t *connection) { 361 // start discover seps now if: 362 // - outgoing active: signaling for outgoing connection 363 // - outgoing not active: incoming connection and no sep discover ongoing 364 365 // sep discovery active? 366 if (a2dp_config_process_sep_discovery_cid == 0){ 367 a2dp_config_process_start_discovering_seps(role, connection); 368 } else { 369 // post-pone sep discovery 370 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 371 config_process->discover_seps = true; 372 } 373 } 374 375 static void a2dp_config_process_handle_media_configuration(avdtp_role_t role, const uint8_t *packet, uint8_t local_seid) { 376 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 377 avdtp_connection_t *connection = avdtp_get_connection_for_avdtp_cid(cid); 378 btstack_assert(connection != NULL); 379 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 380 381 config_process->local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 382 // bail out if local seid invalid 383 if (config_process->local_stream_endpoint == NULL) return; 384 385 // stop timer 386 if (a2dp_config_process_sep_discovery_cid == cid) { 387 a2dp_config_process_timer_stop(); 388 a2dp_config_process_sep_discovery_cid = 0; 389 } 390 391 config_process->stream_endpoint_configured = true; 392 393 switch (config_process->state) { 394 case A2DP_W4_SET_CONFIGURATION: 395 // outgoing: discovery and config of remote sink sep successful, trigger stream open 396 config_process->state = A2DP_W2_OPEN_STREAM_WITH_SEID; 397 break; 398 case A2DP_DISCOVER_SEPS: 399 case A2DP_GET_CAPABILITIES: 400 case A2DP_W2_GET_ALL_CAPABILITIES: 401 case A2DP_DISCOVERY_DONE: 402 case A2DP_W4_GET_CONFIGURATION: 403 // incoming: wait for stream open 404 config_process->state = A2DP_W4_OPEN_STREAM_WITH_SEID; 405 break; 406 default: 407 // wait for configuration after sending reconfigure - keep state 408 break; 409 } 410 } 411 412 void a2dp_config_process_set_config(avdtp_role_t role, avdtp_connection_t *connection) { 413 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 414 uint8_t local_seid = avdtp_stream_endpoint_seid(config_process->local_stream_endpoint); 415 uint8_t remote_seid = config_process->local_stream_endpoint->set_config_remote_seid; 416 log_info("A2DP initiate set configuration locally and wait for response ... local seid 0x%02x, remote seid 0x%02x", 417 local_seid, remote_seid); 418 config_process->state = A2DP_W4_SET_CONFIGURATION; 419 avdtp_set_configuration(connection->avdtp_cid, 420 local_seid, 421 remote_seid, 422 config_process->local_stream_endpoint->remote_configuration_bitmap, 423 config_process->local_stream_endpoint->remote_configuration); 424 } 425 426 static void 427 a2dp_config_process_handle_media_capability(avdtp_role_t role, uint16_t cid, uint8_t a2dp_subevent_id, uint8_t *packet, uint16_t size) { 428 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(cid); 429 btstack_assert(connection != NULL); 430 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 431 if (config_process->state != A2DP_GET_CAPABILITIES) return; 432 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, a2dp_subevent_id); 433 } 434 435 uint8_t a2dp_config_process_config_init(avdtp_role_t role, avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 436 avdtp_media_codec_type_t codec_type) { 437 438 // check state 439 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 440 switch (config_process->state){ 441 case A2DP_DISCOVERY_DONE: 442 case A2DP_GET_CAPABILITIES: 443 break; 444 default: 445 return ERROR_CODE_COMMAND_DISALLOWED; 446 } 447 448 // lookup local stream endpoint 449 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 450 if (stream_endpoint == NULL){ 451 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 452 } 453 454 // lookup remote stream endpoint 455 avdtp_sep_t * remote_sep = NULL; 456 uint8_t i; 457 for (i=0; i < a2dp_config_process_sep_discovery_count; i++){ 458 if (a2dp_config_process_sep_discovery_seps[i].seid == remote_seid){ 459 remote_sep = &a2dp_config_process_sep_discovery_seps[i]; 460 } 461 } 462 if (remote_sep == NULL){ 463 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 464 } 465 466 // set media configuration 467 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 468 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 469 stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 470 // remote seid to use 471 stream_endpoint->set_config_remote_seid = remote_seid; 472 // enable delay reporting if supported 473 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 474 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 475 } 476 477 // suitable stream endpoint found, configure it 478 config_process->local_stream_endpoint = stream_endpoint; 479 config_process->have_config = true; 480 481 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 482 if (config_process->state == A2DP_DISCOVERY_DONE){ 483 config_process->state = A2DP_SET_CONFIGURATION; 484 } 485 #endif 486 487 return ERROR_CODE_SUCCESS; 488 } 489 void a2dp_config_process_avdtp_event_handler(avdtp_role_t role, uint8_t *packet, uint16_t size) { 490 uint16_t cid; 491 avdtp_connection_t * connection; 492 a2dp_config_process_t * config_process; 493 uint8_t signal_identifier; 494 uint8_t status; 495 uint8_t local_seid; 496 uint8_t remote_seid; 497 bool outgoing_active; 498 499 switch (hci_event_avdtp_meta_get_subevent_code(packet)){ 500 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 501 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 502 connection = avdtp_get_connection_for_avdtp_cid(cid); 503 btstack_assert(connection != NULL); 504 config_process = a2dp_config_process_for_role(role, connection); 505 506 status = avdtp_subevent_signaling_connection_established_get_status(packet); 507 if (status != ERROR_CODE_SUCCESS){ 508 // notify about connection error only if we're initiator 509 if (config_process->outgoing_active){ 510 log_info("A2DP signaling connection failed status 0x%02x", status); 511 config_process->outgoing_active = false; 512 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 513 // also emit streaming connection failed 514 a2dp_emit_streaming_connection_failed_for_role(role, connection, status); 515 } 516 break; 517 } 518 log_info("A2DP signaling connection established avdtp_cid 0x%02x", cid); 519 config_process->state = A2DP_CONNECTED; 520 521 // notify app 522 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 523 524 // Windows 10 as Source starts SEP discovery after 1500 ms, but only if it did not get a Discover command 525 // If BTstack is configured for both roles, we need to avoid sending Discover command in Source Role for outgoing Sink connections 526 527 // For this, we trigger SEP discovery if: 528 // a) this is an outgoing connection 529 // b) this connection wasn't caused by an outgoing connection of the other role 530 if (role == AVDTP_ROLE_SOURCE){ 531 if (connection->a2dp_source_config_process.outgoing_active || !connection->a2dp_sink_config_process.outgoing_active){ 532 a2dp_config_process_ready_for_sep_discovery(AVDTP_ROLE_SOURCE, connection); 533 } 534 } else { 535 if (connection->a2dp_sink_config_process.outgoing_active || !connection->a2dp_source_config_process.outgoing_active){ 536 a2dp_config_process_ready_for_sep_discovery(AVDTP_ROLE_SINK, connection); 537 } 538 } 539 break; 540 541 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 542 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 543 connection = avdtp_get_connection_for_avdtp_cid(cid); 544 btstack_assert(connection != NULL); 545 config_process = a2dp_config_process_for_role(role, connection); 546 547 if (config_process->state == A2DP_DISCOVER_SEPS) { 548 avdtp_sep_t sep; 549 memset(&sep, 0, sizeof(avdtp_sep_t)); 550 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 551 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 552 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 553 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 554 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 555 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 556 a2dp_config_process_sep_discovery_count); 557 avdtp_sep_type_t matching_type = (role == AVDTP_ROLE_SOURCE) ? AVDTP_SINK : AVDTP_SOURCE; 558 if ((sep.type == matching_type) && (sep.in_use == false)) { 559 a2dp_config_process_sep_discovery_seps[a2dp_config_process_sep_discovery_count++] = sep; 560 } 561 } 562 break; 563 564 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 565 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 566 connection = avdtp_get_connection_for_avdtp_cid(cid); 567 btstack_assert(connection != NULL); 568 config_process = a2dp_config_process_for_role(role, connection); 569 570 if (config_process->state != A2DP_DISCOVER_SEPS) break; 571 572 if (a2dp_config_process_sep_discovery_count > 0){ 573 config_process->state = A2DP_GET_CAPABILITIES; 574 a2dp_config_process_sep_discovery_index = 0; 575 config_process->have_config = false; 576 } else { 577 if (config_process->outgoing_active){ 578 config_process->outgoing_active = false; 579 connection = avdtp_get_connection_for_avdtp_cid(cid); 580 btstack_assert(connection != NULL); 581 a2dp_emit_streaming_connection_failed_for_role(role, connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 582 } 583 584 // continue 585 config_process->state = A2DP_CONNECTED; 586 a2dp_config_process_sep_discovery_cid = 0; 587 a2dp_config_process_discover_seps_with_next_waiting_connection(); 588 } 589 break; 590 591 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 592 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 593 connection = avdtp_get_connection_for_avdtp_cid(cid); 594 btstack_assert(connection != NULL); 595 config_process = a2dp_config_process_for_role(role, connection); 596 597 if (config_process->state != A2DP_GET_CAPABILITIES) break; 598 599 // forward codec capability 600 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 601 602 #ifndef ENABLE_A2DP_EXPLICIT_CONFIG 603 // select SEP if none configured yet 604 if (config_process->have_config == false){ 605 // find SBC stream endpoint 606 avdtp_sep_type_t required_sep_type = (role == AVDTP_ROLE_SOURCE) ? AVDTP_SOURCE : AVDTP_SINK; 607 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec_and_type(AVDTP_CODEC_SBC, required_sep_type); 608 if (stream_endpoint != NULL){ 609 // choose SBC config params 610 avdtp_configuration_sbc_t configuration; 611 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 612 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 613 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 614 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 615 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 616 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 617 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 618 619 // and pre-select this endpoint 620 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 621 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 622 a2dp_config_process_set_sbc(role, cid, local_seid, remote_seid, &configuration); 623 } 624 } 625 #endif 626 break; 627 // forward codec capability 628 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 629 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 630 a2dp_config_process_handle_media_capability(role, cid, 631 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY, 632 packet, size); 633 break; 634 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 635 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 636 a2dp_config_process_handle_media_capability(role, cid, 637 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY, 638 packet, size); 639 break; 640 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 641 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 642 a2dp_config_process_handle_media_capability(role, cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY, 643 packet, 644 size); 645 break; 646 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 647 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 648 a2dp_config_process_handle_media_capability(role, cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY, 649 packet, 650 size); 651 break; 652 653 // not forwarded 654 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 655 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 656 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 657 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 658 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 659 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 660 break; 661 662 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 663 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 664 connection = avdtp_get_connection_for_avdtp_cid(cid); 665 btstack_assert(connection != NULL); 666 config_process = a2dp_config_process_for_role(role, connection); 667 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, config_process->state); 668 669 if (config_process->state != A2DP_GET_CAPABILITIES) break; 670 671 // store delay reporting capability 672 a2dp_config_process_sep_discovery_seps[a2dp_config_process_sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 673 674 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 675 break; 676 677 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 678 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 679 connection = avdtp_get_connection_for_avdtp_cid(cid); 680 btstack_assert(connection != NULL); 681 config_process = a2dp_config_process_for_role(role, connection); 682 683 if (config_process->state != A2DP_GET_CAPABILITIES) break; 684 685 // forward capabilities done for endpoint 686 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 687 688 // endpoint was not suitable, check next one if possible 689 a2dp_config_process_sep_discovery_index++; 690 691 if (a2dp_config_process_sep_discovery_index >= a2dp_config_process_sep_discovery_count){ 692 693 // emit 'all capabilities for all seps reported' 694 uint8_t event[6]; 695 uint8_t pos = 0; 696 event[pos++] = HCI_EVENT_A2DP_META; 697 event[pos++] = sizeof(event) - 2; 698 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 699 little_endian_store_16(event, pos, cid); 700 a2dp_emit_role(role, event, sizeof(event)); 701 702 // do we have a valid config? 703 if (config_process->have_config){ 704 config_process->state = A2DP_SET_CONFIGURATION; 705 config_process->have_config = false; 706 break; 707 } 708 709 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 710 config_process->state = A2DP_DISCOVERY_DONE; 711 // TODO call a2dp_discover_seps_with_next_waiting_connection? 712 break; 713 #endif 714 715 // we didn't find a suitable SBC stream endpoint, sorry. 716 if (config_process->outgoing_active){ 717 config_process->outgoing_active = false; 718 connection = avdtp_get_connection_for_avdtp_cid(cid); 719 btstack_assert(connection != NULL); 720 a2dp_emit_streaming_connection_failed_for_role(role, connection, 721 ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 722 } 723 config_process->state = A2DP_CONNECTED; 724 a2dp_config_process_sep_discovery_cid = 0; 725 a2dp_config_process_discover_seps_with_next_waiting_connection(); 726 } 727 break; 728 729 // forward codec configuration 730 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 731 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 732 a2dp_config_process_handle_media_configuration(role, packet, local_seid); 733 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, 734 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 735 break; 736 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 737 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 738 a2dp_config_process_handle_media_configuration(role, packet, local_seid); 739 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, 740 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 741 break; 742 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 743 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 744 a2dp_config_process_handle_media_configuration(role, packet, local_seid); 745 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, 746 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 747 break; 748 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 749 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 750 a2dp_config_process_handle_media_configuration(role, packet, local_seid); 751 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, 752 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 753 break; 754 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 755 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 756 a2dp_config_process_handle_media_configuration(role, packet, local_seid); 757 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, 758 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 759 break; 760 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 761 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 762 connection = avdtp_get_connection_for_avdtp_cid(cid); 763 btstack_assert(connection != NULL); 764 765 config_process = a2dp_config_process_for_role(role, connection); 766 outgoing_active = config_process->outgoing_active; 767 config_process->outgoing_active = false; 768 status = avdtp_subevent_streaming_connection_established_get_status(packet); 769 if (status != ERROR_CODE_SUCCESS){ 770 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 771 config_process->state = A2DP_CONNECTED; 772 // suppress event if streaming wasn't requested by us 773 if (outgoing_active == false){ 774 break; 775 } 776 } else { 777 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 778 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 779 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 780 config_process->state = A2DP_STREAMING_OPENED; 781 } 782 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 783 break; 784 785 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 786 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 787 connection = avdtp_get_connection_for_avdtp_cid(cid); 788 btstack_assert(connection != NULL); 789 config_process = a2dp_config_process_for_role(role, connection); 790 791 // restart set config timer while remote is active for current cid 792 if (a2dp_config_process_set_config_timer_active && 793 (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && 794 (cid == a2dp_config_process_sep_discovery_cid)){ 795 796 a2dp_config_process_timer_restart(); 797 break; 798 } 799 800 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 801 802 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), config_process->state, cid); 803 804 switch (config_process->state){ 805 case A2DP_GET_CAPABILITIES: 806 remote_seid = a2dp_config_process_sep_discovery_seps[a2dp_config_process_sep_discovery_index].seid; 807 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 808 avdtp_get_all_capabilities(cid, remote_seid, role); 809 return; 810 811 case A2DP_SET_CONFIGURATION: 812 a2dp_config_process_set_config(role, connection); 813 return; 814 815 case A2DP_W2_OPEN_STREAM_WITH_SEID: 816 log_info("A2DP open stream ... local seid 0x%02x, active remote seid 0x%02x", 817 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 818 config_process->local_stream_endpoint->remote_sep.seid); 819 config_process->state = A2DP_W4_OPEN_STREAM_WITH_SEID; 820 avdtp_open_stream(cid, 821 avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 822 config_process->local_stream_endpoint->remote_sep.seid); 823 break; 824 825 case A2DP_W2_RECONFIGURE_WITH_SEID: 826 log_info("A2DP reconfigured ... local seid 0x%02x, active remote seid 0x%02x", 827 avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 828 config_process->local_stream_endpoint->remote_sep.seid); 829 a2dp_emit_stream_reconfigured_role(role, cid, avdtp_stream_endpoint_seid( 830 config_process->local_stream_endpoint), ERROR_CODE_SUCCESS); 831 config_process->state = A2DP_STREAMING_OPENED; 832 break; 833 834 case A2DP_STREAMING_OPENED: 835 switch (signal_identifier){ 836 case AVDTP_SI_START: 837 a2dp_emit_stream_event_for_role(role, cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 838 A2DP_SUBEVENT_STREAM_STARTED); 839 break; 840 case AVDTP_SI_SUSPEND: 841 a2dp_emit_stream_event_for_role(role, cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 842 A2DP_SUBEVENT_STREAM_SUSPENDED); 843 break; 844 case AVDTP_SI_ABORT: 845 case AVDTP_SI_CLOSE: 846 a2dp_emit_stream_event_for_role(role, cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 847 A2DP_SUBEVENT_STREAM_STOPPED); 848 break; 849 #ifdef ENABLE_AVDTP_ACCEPTOR_EXPLICIT_START_STREAM_CONFIRMATION 850 case AVDTP_SI_ACCEPT_START: 851 a2dp_emit_stream_event_for_role(role, cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 852 A2DP_SUBEVENT_START_STREAM_REQUESTED); 853 break; 854 #endif 855 default: 856 break; 857 } 858 break; 859 860 default: 861 break; 862 } 863 break; 864 865 case AVDTP_SUBEVENT_SIGNALING_REJECT: 866 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 867 connection = avdtp_get_connection_for_avdtp_cid(cid); 868 btstack_assert(connection != NULL); 869 config_process = a2dp_config_process_for_role(role, connection); 870 871 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 872 873 switch (config_process->state) { 874 case A2DP_W2_RECONFIGURE_WITH_SEID: 875 log_info("A2DP reconfigure failed ... local seid 0x%02x, active remote seid 0x%02x", 876 avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 877 config_process->local_stream_endpoint->remote_sep.seid); 878 a2dp_emit_stream_reconfigured_role(role, cid, avdtp_stream_endpoint_seid( 879 config_process->local_stream_endpoint), ERROR_CODE_UNSPECIFIED_ERROR); 880 config_process->state = A2DP_STREAMING_OPENED; 881 break; 882 default: 883 config_process->state = A2DP_CONNECTED; 884 break; 885 } 886 887 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 888 break; 889 890 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 891 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 892 connection = avdtp_get_connection_for_avdtp_cid(cid); 893 btstack_assert(connection != NULL); 894 config_process = a2dp_config_process_for_role(role, connection); 895 896 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 897 898 config_process->state = A2DP_CONNECTED; 899 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 900 break; 901 902 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 903 cid = avdtp_subevent_streaming_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 config_process->state = A2DP_CONFIGURED; 909 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 910 break; 911 912 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 913 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 914 connection = avdtp_get_connection_for_avdtp_cid(cid); 915 btstack_assert(connection != NULL); 916 config_process = a2dp_config_process_for_role(role, connection); 917 918 // connect/release are passed on to app 919 if (a2dp_config_process_sep_discovery_cid == cid){ 920 a2dp_config_process_timer_stop(); 921 config_process->stream_endpoint_configured = false; 922 config_process->local_stream_endpoint = NULL; 923 924 config_process->state = A2DP_IDLE; 925 a2dp_config_process_sep_discovery_cid = 0; 926 } 927 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 928 break; 929 930 default: 931 break; 932 } 933 } 934 935 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){ 936 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 937 if (connection == NULL){ 938 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 939 } 940 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 941 942 uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 943 if (status != ERROR_CODE_SUCCESS) { 944 return status; 945 } 946 947 // set config in reserved buffer 948 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) config_process->local_stream_endpoint->media_codec_info; 949 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 950 status = avdtp_config_sbc_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 951 if (status != ERROR_CODE_SUCCESS) { 952 return status; 953 } 954 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 955 a2dp_config_process_set_config(role, connection); 956 #endif 957 958 return ERROR_CODE_SUCCESS; 959 } 960 961 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){ 962 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 963 if (connection == NULL){ 964 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 965 } 966 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 967 968 uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 969 if (status != ERROR_CODE_SUCCESS) { 970 return status; 971 } 972 973 // set config in reserved buffer 974 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *)config_process->local_stream_endpoint->media_codec_info; 975 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 976 status = avdtp_config_mpeg_audio_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 977 if (status != ERROR_CODE_SUCCESS) { 978 return status; 979 } 980 981 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 982 a2dp_config_process_set_config(role, connection); 983 #endif 984 985 return ERROR_CODE_SUCCESS; 986 } 987 988 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){ 989 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 990 if (connection == NULL){ 991 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 992 } 993 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 994 995 uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 996 if (status != ERROR_CODE_SUCCESS) { 997 return status; 998 } 999 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) config_process->local_stream_endpoint->media_codec_info; 1000 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 1001 status = avdtp_config_mpeg_aac_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 1002 if (status != ERROR_CODE_SUCCESS){ 1003 return status; 1004 } 1005 1006 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 1007 a2dp_config_process_set_config(role, connection); 1008 #endif 1009 1010 return ERROR_CODE_SUCCESS; 1011 } 1012 1013 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){ 1014 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 1015 if (connection == NULL){ 1016 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1017 } 1018 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 1019 1020 uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 1021 if (status != ERROR_CODE_SUCCESS) { 1022 return status; 1023 } 1024 1025 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) config_process->local_stream_endpoint->media_codec_info; 1026 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 1027 status = avdtp_config_atrac_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 1028 if (status != ERROR_CODE_SUCCESS) { 1029 return status; 1030 } 1031 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 1032 a2dp_config_process_set_config(role, connection); 1033 #endif 1034 1035 return ERROR_CODE_SUCCESS; 1036 } 1037 1038 uint8_t a2dp_config_process_set_other(avdtp_role_t role, uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 1039 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 1040 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 1041 if (connection == NULL){ 1042 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1043 } 1044 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 1045 1046 uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 1047 if (status != 0) { 1048 return status; 1049 } 1050 1051 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 1052 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 1053 1054 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 1055 a2dp_config_process_set_config(role, connection); 1056 #endif 1057 1058 return status; 1059 } 1060