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54 #include "classic/avdtp_util.h" 55 #include "btstack_debug.h" 56 57 // ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG has been replaced by ENABLE_A2DP_EXPLICIT_CONFIG which is valid for both roles 58 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 59 #error "Please define ENABLE_A2DP_EXPLICIT_CONFIG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, 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, 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_emit_stream_event(btstack_packet_handler_t callback, uint16_t cid, uint8_t local_seid, uint8_t subevent_id){ 194 uint8_t event[6]; 195 int pos = 0; 196 event[pos++] = HCI_EVENT_A2DP_META; 197 event[pos++] = sizeof(event) - 2; 198 event[pos++] = subevent_id; 199 little_endian_store_16(event, pos, cid); 200 pos += 2; 201 event[pos++] = local_seid; 202 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 203 } 204 205 void a2dp_register_source_packet_handler(btstack_packet_handler_t callback){ 206 btstack_assert(callback != NULL); 207 a2dp_source_callback = callback; 208 } 209 210 void a2dp_register_sink_packet_handler(btstack_packet_handler_t callback){ 211 btstack_assert(callback != NULL); 212 a2dp_sink_callback = callback; 213 } 214 215 void a2dp_replace_subevent_id_and_emit_source(uint8_t * packet, uint16_t size, uint8_t subevent_id) { 216 a2dp_replace_subevent_id_and_emit(a2dp_source_callback, packet, size, subevent_id); 217 } 218 219 static void a2dp_replace_subevent_id_and_emit_sink(uint8_t *packet, uint16_t size, uint8_t subevent_id) { 220 a2dp_replace_subevent_id_and_emit(a2dp_sink_callback, packet, size, subevent_id); 221 } 222 223 static void a2dp_replace_subevent_id_and_emit_for_role(avdtp_role_t role, uint8_t * packet, uint16_t size, uint8_t subevent_id) { 224 if (role == AVDTP_ROLE_SOURCE){ 225 a2dp_replace_subevent_id_and_emit_source(packet, size, subevent_id); 226 } else { 227 a2dp_replace_subevent_id_and_emit_sink(packet, size, subevent_id); 228 } 229 } 230 231 static void a2dp_emit_role(avdtp_role_t role, uint8_t * packet, uint16_t size){ 232 if (role == AVDTP_ROLE_SOURCE){ 233 (*a2dp_source_callback)(HCI_EVENT_PACKET, 0, packet, size); 234 } else { 235 (*a2dp_sink_callback)(HCI_EVENT_PACKET, 0, packet, size); 236 } 237 } 238 239 void a2dp_emit_stream_event_for_role(avdtp_role_t role, uint16_t cid, uint8_t local_seid, uint8_t subevent_id) { 240 uint8_t event[6]; 241 int pos = 0; 242 event[pos++] = HCI_EVENT_A2DP_META; 243 event[pos++] = sizeof(event) - 2; 244 event[pos++] = subevent_id; 245 little_endian_store_16(event, pos, cid); 246 pos += 2; 247 event[pos++] = local_seid; 248 a2dp_emit_role(role, event, sizeof(event)); 249 } 250 251 void a2dp_emit_stream_reconfigured_role(avdtp_role_t role, uint16_t cid, uint8_t local_seid, uint8_t status){ 252 uint8_t event[7]; 253 int pos = 0; 254 event[pos++] = HCI_EVENT_A2DP_META; 255 event[pos++] = sizeof(event) - 2; 256 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 257 little_endian_store_16(event, pos, cid); 258 pos += 2; 259 event[pos++] = local_seid; 260 event[pos++] = status; 261 a2dp_emit_role(role, event, sizeof(event)); 262 } 263 264 void a2dp_emit_streaming_connection_failed_for_role(avdtp_role_t role, avdtp_connection_t *connection, uint8_t status) { 265 uint8_t event[14]; 266 int pos = 0; 267 event[pos++] = HCI_EVENT_A2DP_META; 268 event[pos++] = sizeof(event) - 2; 269 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 270 little_endian_store_16(event, pos, connection->avdtp_cid); 271 pos += 2; 272 reverse_bd_addr(connection->remote_addr, &event[pos]); 273 pos += 6; 274 event[pos++] = 0; 275 event[pos++] = 0; 276 event[pos++] = status; 277 a2dp_emit_role(role, event, sizeof(event)); 278 } 279 280 static a2dp_config_process_t * a2dp_config_process_for_role(avdtp_role_t role, avdtp_connection_t *connection){ 281 return (role == AVDTP_ROLE_SOURCE) ? &connection->a2dp_source_config_process : &connection->a2dp_sink_config_process; 282 } 283 284 static void a2dp_config_process_timer_handler(btstack_timer_source_t * timer){ 285 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 286 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 287 btstack_run_loop_set_timer_context(&a2dp_config_process_set_config_timer, NULL); 288 a2dp_config_process_set_config_timer_active = false; 289 290 log_info("Config timer fired, avdtp_cid 0x%02x", avdtp_cid); 291 292 if (connection == NULL) { 293 a2dp_config_process_discover_seps_with_next_waiting_connection(); 294 return; 295 } 296 a2dp_config_process_t * config_process = a2dp_config_process_for_role(a2dp_config_process_role, connection); 297 if (config_process->stream_endpoint_configured) { 298 a2dp_config_process_discover_seps_with_next_waiting_connection(); 299 return; 300 } 301 302 avdtp_discover_stream_endpoints(avdtp_cid); 303 } 304 305 static void a2dp_config_process_timer_start(uint16_t avdtp_cid){ 306 log_info("Config timer start for cid 0%02x", avdtp_cid); 307 a2dp_config_process_set_config_timer_active = true; 308 btstack_run_loop_remove_timer(&a2dp_config_process_set_config_timer); 309 btstack_run_loop_set_timer_handler(&a2dp_config_process_set_config_timer, a2dp_config_process_timer_handler); 310 btstack_run_loop_set_timer(&a2dp_config_process_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 311 btstack_run_loop_set_timer_context(&a2dp_config_process_set_config_timer, (void *)(uintptr_t)avdtp_cid); 312 btstack_run_loop_add_timer(&a2dp_config_process_set_config_timer); 313 } 314 315 static void a2dp_config_process_timer_restart(void){ 316 log_info("Config timer restart"); 317 btstack_run_loop_remove_timer(&a2dp_config_process_set_config_timer); 318 btstack_run_loop_set_timer(&a2dp_config_process_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 319 btstack_run_loop_add_timer(&a2dp_config_process_set_config_timer); 320 } 321 322 static void a2dp_config_process_timer_stop(void){ 323 if (a2dp_config_process_set_config_timer_active == false) return; 324 log_info("Config timer stop"); 325 btstack_run_loop_remove_timer(&a2dp_config_process_set_config_timer); 326 btstack_run_loop_set_timer_context(&a2dp_config_process_set_config_timer, NULL); 327 a2dp_config_process_set_config_timer_active = false; 328 } 329 330 // Discover seps, both incoming and outgoing 331 static void a2dp_config_process_start_discovering_seps(avdtp_role_t role, avdtp_connection_t *connection) { 332 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 333 334 config_process->state = A2DP_DISCOVER_SEPS; 335 config_process->discover_seps = false; 336 337 a2dp_config_process_role = role; 338 a2dp_config_process_sep_discovery_index = 0; 339 a2dp_config_process_sep_discovery_count = 0; 340 memset(a2dp_config_process_sep_discovery_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 341 a2dp_config_process_sep_discovery_cid = connection->avdtp_cid; 342 343 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 344 if (config_process->outgoing_active){ 345 log_info("discover seps"); 346 avdtp_discover_stream_endpoints(connection->avdtp_cid); 347 } else { 348 log_info("wait a bit, then discover seps"); 349 a2dp_config_process_timer_start(connection->avdtp_cid); 350 } 351 } 352 353 static void a2dp_config_process_discover_seps_with_next_waiting_connection(void){ 354 btstack_assert(a2dp_config_process_sep_discovery_cid == 0); 355 btstack_linked_list_iterator_t it; 356 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 357 while (btstack_linked_list_iterator_has_next(&it)){ 358 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 359 if (next_connection->a2dp_source_config_process.discover_seps) { 360 a2dp_config_process_start_discovering_seps(AVDTP_ROLE_SOURCE, next_connection); 361 } 362 if (next_connection->a2dp_sink_config_process.discover_seps) { 363 a2dp_config_process_start_discovering_seps(AVDTP_ROLE_SINK, next_connection); 364 } 365 } 366 } 367 368 void a2dp_config_process_ready_for_sep_discovery(avdtp_role_t role, avdtp_connection_t *connection) { 369 // start discover seps now if: 370 // - outgoing active: signaling for outgoing connection 371 // - outgoing not active: incoming connection and no sep discover ongoing 372 373 // sep discovery active? 374 if (a2dp_config_process_sep_discovery_cid == 0){ 375 a2dp_config_process_start_discovering_seps(role, connection); 376 } else { 377 // post-pone sep discovery 378 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 379 config_process->discover_seps = true; 380 } 381 } 382 383 static void a2dp_config_process_handle_media_configuration(avdtp_role_t role, const uint8_t *packet, uint8_t local_seid) { 384 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 385 avdtp_connection_t *connection = avdtp_get_connection_for_avdtp_cid(cid); 386 btstack_assert(connection != NULL); 387 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 388 389 config_process->local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 390 // bail out if local seid invalid 391 if (config_process->local_stream_endpoint == NULL) return; 392 393 // stop timer 394 if (a2dp_config_process_sep_discovery_cid == cid) { 395 a2dp_config_process_timer_stop(); 396 a2dp_config_process_sep_discovery_cid = 0; 397 } 398 399 config_process->stream_endpoint_configured = true; 400 401 switch (config_process->state) { 402 case A2DP_W4_SET_CONFIGURATION: 403 // outgoing: discovery and config of remote sink sep successful, trigger stream open 404 config_process->state = A2DP_W2_OPEN_STREAM_WITH_SEID; 405 break; 406 case A2DP_DISCOVER_SEPS: 407 case A2DP_GET_CAPABILITIES: 408 case A2DP_W2_GET_ALL_CAPABILITIES: 409 case A2DP_DISCOVERY_DONE: 410 case A2DP_W4_GET_CONFIGURATION: 411 // incoming: wait for stream open 412 config_process->state = A2DP_W4_OPEN_STREAM_WITH_SEID; 413 break; 414 default: 415 // wait for configuration after sending reconfigure - keep state 416 break; 417 } 418 } 419 420 void a2dp_config_process_set_config(avdtp_role_t role, avdtp_connection_t *connection) { 421 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 422 uint8_t remote_seid = config_process->local_stream_endpoint->set_config_remote_seid; 423 log_info("A2DP initiate set configuration locally and wait for response ... local seid 0x%02x, remote seid 0x%02x", 424 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), remote_seid); 425 config_process->state = A2DP_W4_SET_CONFIGURATION; 426 avdtp_set_configuration(connection->avdtp_cid, 427 avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 428 remote_seid, 429 config_process->local_stream_endpoint->remote_configuration_bitmap, 430 config_process->local_stream_endpoint->remote_configuration); 431 } 432 433 static void 434 a2dp_config_process_handle_media_capability(avdtp_role_t role, uint16_t cid, uint8_t a2dp_subevent_id, uint8_t *packet, uint16_t size) { 435 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(cid); 436 btstack_assert(connection != NULL); 437 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 438 if (config_process->state != A2DP_GET_CAPABILITIES) return; 439 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, a2dp_subevent_id); 440 } 441 442 uint8_t a2dp_config_process_config_init(avdtp_role_t role, avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 443 avdtp_media_codec_type_t codec_type) { 444 445 // check state 446 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 447 switch (config_process->state){ 448 case A2DP_DISCOVERY_DONE: 449 case A2DP_GET_CAPABILITIES: 450 break; 451 default: 452 return ERROR_CODE_COMMAND_DISALLOWED; 453 } 454 455 // lookup local stream endpoint 456 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 457 if (stream_endpoint == NULL){ 458 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 459 } 460 461 // lookup remote stream endpoint 462 avdtp_sep_t * remote_sep = NULL; 463 uint8_t i; 464 for (i=0; i < a2dp_config_process_sep_discovery_count; i++){ 465 if (a2dp_config_process_sep_discovery_seps[i].seid == remote_seid){ 466 remote_sep = &a2dp_config_process_sep_discovery_seps[i]; 467 } 468 } 469 if (remote_sep == NULL){ 470 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 471 } 472 473 // set media configuration 474 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 475 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 476 stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 477 // remote seid to use 478 stream_endpoint->set_config_remote_seid = remote_seid; 479 // enable delay reporting if supported 480 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 481 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 482 } 483 484 // suitable stream endpoint found, configure it 485 config_process->local_stream_endpoint = stream_endpoint; 486 config_process->have_config = true; 487 488 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 489 if (config_process->state == A2DP_DISCOVERY_DONE) 490 config_process->state = A2DP_SET_CONFIGURATION; 491 } 492 #endif 493 494 return ERROR_CODE_SUCCESS; 495 } 496 void a2dp_config_process_avdtp_event_handler(avdtp_role_t role, uint8_t *packet, uint16_t size) { 497 uint16_t cid; 498 avdtp_connection_t * connection; 499 a2dp_config_process_t * config_process; 500 uint8_t signal_identifier; 501 uint8_t status; 502 uint8_t local_seid; 503 uint8_t remote_seid; 504 505 switch (hci_event_avdtp_meta_get_subevent_code(packet)){ 506 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 507 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 508 connection = avdtp_get_connection_for_avdtp_cid(cid); 509 btstack_assert(connection != NULL); 510 config_process = a2dp_config_process_for_role(role, connection); 511 512 status = avdtp_subevent_signaling_connection_established_get_status(packet); 513 if (status != ERROR_CODE_SUCCESS){ 514 // notify about connection error only if we're initiator 515 if (config_process->outgoing_active){ 516 log_info("A2DP source signaling connection failed status 0x%02x", status); 517 config_process->outgoing_active = false; 518 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 519 } 520 break; 521 } 522 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 523 config_process->state = A2DP_CONNECTED; 524 525 // notify app 526 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 527 528 // Windows 10 as Source starts SEP discovery after 1500 ms, but only if it did not get a Discover command 529 // If BTstack is configured for both roles, we need to avoid sending Discover command in Source Role for outgoing Sink connections 530 531 // For this, we trigger SEP discovery if: 532 // a) this is an outgoing connection 533 // b) this connection wasn't caused by an outgoing connection of the other role 534 if (role == AVDTP_ROLE_SOURCE){ 535 if (connection->a2dp_source_config_process.outgoing_active || !connection->a2dp_sink_config_process.outgoing_active){ 536 a2dp_config_process_ready_for_sep_discovery(AVDTP_ROLE_SOURCE, connection); 537 } 538 } else { 539 if (connection->a2dp_sink_config_process.outgoing_active || !connection->a2dp_source_config_process.outgoing_active){ 540 a2dp_config_process_ready_for_sep_discovery(AVDTP_ROLE_SINK, connection); 541 } 542 } 543 break; 544 545 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 546 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 547 connection = avdtp_get_connection_for_avdtp_cid(cid); 548 btstack_assert(connection != NULL); 549 config_process = a2dp_config_process_for_role(role, connection); 550 551 if (config_process->state == A2DP_DISCOVER_SEPS) { 552 avdtp_sep_t sep; 553 memset(&sep, 0, sizeof(avdtp_sep_t)); 554 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 555 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 556 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 557 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 558 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 559 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 560 a2dp_config_process_sep_discovery_count); 561 avdtp_sep_type_t matching_type = (role == AVDTP_ROLE_SOURCE) ? AVDTP_SINK : AVDTP_SOURCE; 562 if ((sep.type == matching_type) && (sep.in_use == false)) { 563 a2dp_config_process_sep_discovery_seps[a2dp_config_process_sep_discovery_count++] = sep; 564 } 565 } 566 break; 567 568 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 569 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 570 connection = avdtp_get_connection_for_avdtp_cid(cid); 571 btstack_assert(connection != NULL); 572 config_process = a2dp_config_process_for_role(role, connection); 573 574 if (config_process->state != A2DP_DISCOVER_SEPS) break; 575 576 if (a2dp_config_process_sep_discovery_count > 0){ 577 config_process->state = A2DP_GET_CAPABILITIES; 578 a2dp_config_process_sep_discovery_index = 0; 579 config_process->have_config = false; 580 } else { 581 if (config_process->outgoing_active){ 582 config_process->outgoing_active = false; 583 connection = avdtp_get_connection_for_avdtp_cid(cid); 584 btstack_assert(connection != NULL); 585 a2dp_emit_streaming_connection_failed_for_role(role, connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 586 } 587 588 // continue 589 config_process->state = A2DP_CONNECTED; 590 a2dp_config_process_sep_discovery_cid = 0; 591 a2dp_config_process_discover_seps_with_next_waiting_connection(); 592 } 593 break; 594 595 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 596 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 597 connection = avdtp_get_connection_for_avdtp_cid(cid); 598 btstack_assert(connection != NULL); 599 config_process = a2dp_config_process_for_role(role, connection); 600 601 if (config_process->state != A2DP_GET_CAPABILITIES) break; 602 603 // forward codec capability 604 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 605 606 #ifndef ENABLE_A2DP_EXPLICIT_CONFIG 607 // select SEP if none configured yet 608 if (config_process->have_config == false){ 609 // find SBC stream endpoint 610 avdtp_sep_type_t required_sep_type = (role == AVDTP_ROLE_SOURCE) ? AVDTP_SOURCE : AVDTP_SINK; 611 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec_and_type(AVDTP_CODEC_SBC, required_sep_type); 612 if (stream_endpoint != NULL){ 613 // choose SBC config params 614 avdtp_configuration_sbc_t configuration; 615 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 616 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 617 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 618 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 619 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 620 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 621 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 622 623 // and pre-select this endpoint 624 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 625 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 626 a2dp_config_process_set_sbc(role, cid, local_seid, remote_seid, &configuration); 627 } 628 } 629 #endif 630 break; 631 // forward codec capability 632 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 633 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 634 a2dp_config_process_handle_media_capability(role, cid, 635 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY, 636 packet, size); 637 break; 638 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 639 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 640 a2dp_config_process_handle_media_capability(role, cid, 641 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY, 642 packet, size); 643 break; 644 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 645 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 646 a2dp_config_process_handle_media_capability(role, cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY, 647 packet, 648 size); 649 break; 650 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 651 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 652 a2dp_config_process_handle_media_capability(role, cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY, 653 packet, 654 size); 655 break; 656 657 // not forwarded 658 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 659 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 660 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 661 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 662 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 663 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 664 break; 665 666 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 667 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 668 connection = avdtp_get_connection_for_avdtp_cid(cid); 669 btstack_assert(connection != NULL); 670 config_process = a2dp_config_process_for_role(role, connection); 671 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, config_process->state); 672 673 if (config_process->state != A2DP_GET_CAPABILITIES) break; 674 675 // store delay reporting capability 676 a2dp_config_process_sep_discovery_seps[a2dp_config_process_sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 677 678 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 679 break; 680 681 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 682 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 683 connection = avdtp_get_connection_for_avdtp_cid(cid); 684 btstack_assert(connection != NULL); 685 config_process = a2dp_config_process_for_role(role, connection); 686 687 if (config_process->state != A2DP_GET_CAPABILITIES) break; 688 689 // forward capabilities done for endpoint 690 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 691 692 // endpoint was not suitable, check next one if possible 693 a2dp_config_process_sep_discovery_index++; 694 695 if (a2dp_config_process_sep_discovery_index >= a2dp_config_process_sep_discovery_count){ 696 697 // emit 'all capabilities for all seps reported' 698 uint8_t event[6]; 699 uint8_t pos = 0; 700 event[pos++] = HCI_EVENT_A2DP_META; 701 event[pos++] = sizeof(event) - 2; 702 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 703 little_endian_store_16(event, pos, cid); 704 a2dp_emit_role(role, event, sizeof(event)); 705 706 // do we have a valid config? 707 if (config_process->have_config){ 708 config_process->state = A2DP_SET_CONFIGURATION; 709 config_process->have_config = false; 710 break; 711 } 712 713 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 714 config_process->state = A2DP_DISCOVERY_DONE; 715 // TODO call a2dp_discover_seps_with_next_waiting_connection? 716 break; 717 #endif 718 719 // we didn't find a suitable SBC stream endpoint, sorry. 720 if (config_process->outgoing_active){ 721 config_process->outgoing_active = false; 722 connection = avdtp_get_connection_for_avdtp_cid(cid); 723 btstack_assert(connection != NULL); 724 a2dp_emit_streaming_connection_failed_for_role(role, connection, 725 ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 726 } 727 config_process->state = A2DP_CONNECTED; 728 a2dp_config_process_sep_discovery_cid = 0; 729 a2dp_config_process_discover_seps_with_next_waiting_connection(); 730 } 731 break; 732 733 // forward codec configuration 734 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 735 local_seid = avdtp_subevent_signaling_media_codec_sbc_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_SBC_CONFIGURATION); 739 break; 740 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 741 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_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_MPEG_AUDIO_CONFIGURATION); 745 break; 746 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 747 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_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_MPEG_AAC_CONFIGURATION); 751 break; 752 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 753 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 754 a2dp_config_process_handle_media_configuration(role, packet, local_seid); 755 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, 756 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 757 break; 758 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 759 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 760 a2dp_config_process_handle_media_configuration(role, packet, local_seid); 761 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, 762 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 763 break; 764 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 765 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 766 connection = avdtp_get_connection_for_avdtp_cid(cid); 767 btstack_assert(connection != NULL); 768 config_process = a2dp_config_process_for_role(role, connection); 769 770 if (config_process->state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 771 772 config_process->outgoing_active = false; 773 status = avdtp_subevent_streaming_connection_established_get_status(packet); 774 if (status != ERROR_CODE_SUCCESS){ 775 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 776 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 777 break; 778 } 779 780 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 781 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 782 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 783 config_process->state = A2DP_STREAMING_OPENED; 784 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 785 break; 786 787 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 788 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 789 connection = avdtp_get_connection_for_avdtp_cid(cid); 790 btstack_assert(connection != NULL); 791 config_process = a2dp_config_process_for_role(role, connection); 792 793 // restart set config timer while remote is active for current cid 794 if (a2dp_config_process_set_config_timer_active && 795 (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && 796 (cid == a2dp_config_process_sep_discovery_cid)){ 797 798 a2dp_config_process_timer_restart(); 799 break; 800 } 801 802 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 803 804 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), config_process->state, cid); 805 806 switch (config_process->state){ 807 case A2DP_GET_CAPABILITIES: 808 remote_seid = a2dp_config_process_sep_discovery_seps[a2dp_config_process_sep_discovery_index].seid; 809 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 810 avdtp_get_all_capabilities(cid, remote_seid, role); 811 return; 812 813 case A2DP_SET_CONFIGURATION: 814 a2dp_config_process_set_config(role, connection); 815 return; 816 817 case A2DP_W2_OPEN_STREAM_WITH_SEID: 818 log_info("A2DP open stream ... local seid 0x%02x, active remote seid 0x%02x", 819 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 820 config_process->local_stream_endpoint->remote_sep.seid); 821 config_process->state = A2DP_W4_OPEN_STREAM_WITH_SEID; 822 avdtp_source_open_stream(cid, 823 avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 824 config_process->local_stream_endpoint->remote_sep.seid); 825 break; 826 827 case A2DP_W2_RECONFIGURE_WITH_SEID: 828 log_info("A2DP reconfigured ... local seid 0x%02x, active remote seid 0x%02x", 829 avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 830 config_process->local_stream_endpoint->remote_sep.seid); 831 a2dp_emit_stream_reconfigured_role(role, cid, avdtp_stream_endpoint_seid( 832 config_process->local_stream_endpoint), ERROR_CODE_SUCCESS); 833 config_process->state = A2DP_STREAMING_OPENED; 834 break; 835 836 case A2DP_STREAMING_OPENED: 837 switch (signal_identifier){ 838 case AVDTP_SI_START: 839 a2dp_emit_stream_event_for_role(role, cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 840 A2DP_SUBEVENT_STREAM_STARTED); 841 break; 842 case AVDTP_SI_SUSPEND: 843 a2dp_emit_stream_event_for_role(role, cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 844 A2DP_SUBEVENT_STREAM_SUSPENDED); 845 break; 846 case AVDTP_SI_ABORT: 847 case AVDTP_SI_CLOSE: 848 a2dp_emit_stream_event_for_role(role, cid, avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 849 A2DP_SUBEVENT_STREAM_STOPPED); 850 break; 851 default: 852 break; 853 } 854 break; 855 856 default: 857 break; 858 } 859 break; 860 861 case AVDTP_SUBEVENT_SIGNALING_REJECT: 862 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 863 connection = avdtp_get_connection_for_avdtp_cid(cid); 864 btstack_assert(connection != NULL); 865 config_process = a2dp_config_process_for_role(role, connection); 866 867 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 868 869 switch (config_process->state) { 870 case A2DP_W2_RECONFIGURE_WITH_SEID: 871 log_info("A2DP reconfigure failed ... local seid 0x%02x, active remote seid 0x%02x", 872 avdtp_stream_endpoint_seid(config_process->local_stream_endpoint), 873 config_process->local_stream_endpoint->remote_sep.seid); 874 a2dp_emit_stream_reconfigured_role(role, cid, avdtp_stream_endpoint_seid( 875 config_process->local_stream_endpoint), ERROR_CODE_UNSPECIFIED_ERROR); 876 config_process->state = A2DP_STREAMING_OPENED; 877 break; 878 default: 879 config_process->state = A2DP_CONNECTED; 880 break; 881 } 882 883 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 884 break; 885 886 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 887 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 888 connection = avdtp_get_connection_for_avdtp_cid(cid); 889 btstack_assert(connection != NULL); 890 config_process = a2dp_config_process_for_role(role, connection); 891 892 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 893 894 config_process->state = A2DP_CONNECTED; 895 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 896 break; 897 898 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 899 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 900 connection = avdtp_get_connection_for_avdtp_cid(cid); 901 btstack_assert(connection != NULL); 902 config_process = a2dp_config_process_for_role(role, connection); 903 904 config_process->state = A2DP_CONFIGURED; 905 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 906 break; 907 908 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 909 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 910 connection = avdtp_get_connection_for_avdtp_cid(cid); 911 btstack_assert(connection != NULL); 912 config_process = a2dp_config_process_for_role(role, connection); 913 914 // connect/release are passed on to app 915 if (a2dp_config_process_sep_discovery_cid == cid){ 916 a2dp_config_process_timer_stop(); 917 config_process->stream_endpoint_configured = false; 918 config_process->local_stream_endpoint = NULL; 919 920 config_process->state = A2DP_IDLE; 921 a2dp_config_process_sep_discovery_cid = 0; 922 } 923 a2dp_replace_subevent_id_and_emit_for_role(role, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 924 break; 925 926 default: 927 break; 928 } 929 } 930 931 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){ 932 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 933 if (connection == NULL){ 934 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 935 } 936 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 937 938 uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 939 if (status != 0) { 940 return status; 941 } 942 // set config in reserved buffer 943 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) config_process->local_stream_endpoint->media_codec_info; 944 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 945 avdtp_config_sbc_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 946 947 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 948 a2dp_config_process_set_config(role, connection); 949 #endif 950 951 return ERROR_CODE_SUCCESS; 952 } 953 954 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){ 955 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 956 if (connection == NULL){ 957 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 958 } 959 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 960 961 uint8_t status = a2dp_config_process_config_init(role, connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 962 if (status != 0) { 963 return status; 964 } 965 966 // set config in reserved buffer 967 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *)config_process->local_stream_endpoint->media_codec_info; 968 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 969 avdtp_config_mpeg_audio_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 970 971 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 972 a2dp_config_process_set_config(role, connection); 973 #endif 974 975 return ERROR_CODE_SUCCESS; 976 } 977 978 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){ 979 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 980 if (connection == NULL){ 981 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 982 } 983 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 984 985 uint8_t status = a2dp_config_process_config_init(AVDTP_ROLE_SOURCE, connection, local_seid, remote_seid, 986 AVDTP_CODEC_MPEG_2_4_AAC); 987 if (status != 0) { 988 return status; 989 } 990 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) config_process->local_stream_endpoint->media_codec_info; 991 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 992 avdtp_config_mpeg_aac_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 993 994 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 995 a2dp_config_process_set_config(role, connection); 996 #endif 997 998 return ERROR_CODE_SUCCESS; 999 } 1000 1001 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){ 1002 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 1003 if (connection == NULL){ 1004 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1005 } 1006 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 1007 1008 uint8_t status = a2dp_config_process_config_init(AVDTP_ROLE_SOURCE, connection, local_seid, remote_seid, 1009 AVDTP_CODEC_ATRAC_FAMILY); 1010 if (status != 0) { 1011 return status; 1012 } 1013 1014 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) config_process->local_stream_endpoint->media_codec_info; 1015 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 1016 avdtp_config_atrac_store(config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 1017 1018 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 1019 a2dp_config_process_set_config(role, connection); 1020 #endif 1021 1022 return ERROR_CODE_SUCCESS; 1023 } 1024 1025 uint8_t a2dp_config_process_set_other(avdtp_role_t role, uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 1026 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 1027 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 1028 if (connection == NULL){ 1029 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1030 } 1031 a2dp_config_process_t * config_process = a2dp_config_process_for_role(role, connection); 1032 1033 uint8_t status = a2dp_config_process_config_init(AVDTP_ROLE_SOURCE, connection, local_seid, remote_seid, 1034 AVDTP_CODEC_NON_A2DP); 1035 if (status != 0) { 1036 return status; 1037 } 1038 1039 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 1040 config_process->local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 1041 1042 #ifdef ENABLE_A2DP_EXPLICIT_CONFIG 1043 a2dp_config_process_set_config(role, connection); 1044 #endif 1045 1046 return status; 1047 } 1048