1 2 /* 3 * Copyright (C) 2016 BlueKitchen GmbH 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the copyright holders nor the names of 15 * contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 4. Any redistribution, use, or modification is done solely for 18 * personal benefit and not for any commercial purpose or for 19 * monetary gain. 20 * 21 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 25 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 28 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 31 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * Please inquire about commercial licensing options at 35 * [email protected] 36 * 37 */ 38 39 /** 40 * Supported use cases: 41 * - single incoming connection: sep discovery starts and stream will get setup if remote sink sep with SBC is found 42 * - single outgoing connection: see above 43 * - outgoing and incoming connection to same device: 44 * - if outgoing is triggered first, incoming will get ignored. 45 * - if incoming starts first, start ougoing will fail, but incoming will succeed. 46 * - outgoing and incoming connections to different devices: 47 * - if outgoing is first, incoming gets ignored. 48 * - if incoming starts first SEP discovery will get stopped and outgoing will succeed. 49 */ 50 51 #define BTSTACK_FILE__ "a2dp_source.c" 52 53 #include <stdint.h> 54 #include <string.h> 55 56 #include "bluetooth_psm.h" 57 #include "bluetooth_sdp.h" 58 #include "btstack_debug.h" 59 #include "btstack_event.h" 60 #include "classic/a2dp_source.h" 61 #include "classic/avdtp_source.h" 62 #include "classic/avdtp_util.h" 63 #include "classic/sdp_util.h" 64 #include "l2cap.h" 65 66 #define AVDTP_MAX_SEP_NUM 10 67 #define A2DP_SET_CONFIG_DELAY_MS 150 68 69 static const char * default_a2dp_source_service_name = "BTstack A2DP Source Service"; 70 static const char * default_a2dp_source_service_provider_name = "BTstack A2DP Source Service Provider"; 71 72 static btstack_packet_handler_t a2dp_source_packet_handler_user; 73 74 // config process - singletons using sep_discovery_cid is used as mutex 75 static uint16_t sep_discovery_cid; 76 static uint16_t sep_discovery_count; 77 static uint16_t sep_discovery_index; 78 static avdtp_sep_t sep_discovery_seps[AVDTP_MAX_SEP_NUM]; 79 static btstack_timer_source_t a2dp_source_set_config_timer; 80 81 static avdtp_stream_endpoint_t * local_stream_endpoint; 82 83 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 84 static void a2dp_discover_seps_with_next_waiting_connection(void); 85 86 static void a2dp_source_streaming_emit_connection_failed(avdtp_connection_t *connection, uint8_t status) { 87 uint8_t event[14]; 88 int pos = 0; 89 event[pos++] = HCI_EVENT_A2DP_META; 90 event[pos++] = sizeof(event) - 2; 91 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 92 little_endian_store_16(event, pos, connection->avdtp_cid); 93 pos += 2; 94 reverse_bd_addr(connection->remote_addr, &event[pos]); 95 pos += 6; 96 event[pos++] = 0; 97 event[pos++] = 0; 98 event[pos++] = status; 99 100 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 101 } 102 103 void a2dp_source_create_sdp_record(uint8_t * service, uint32_t service_record_handle, uint16_t supported_features, const char * service_name, const char * service_provider_name){ 104 uint8_t* attribute; 105 de_create_sequence(service); 106 107 // 0x0000 "Service Record Handle" 108 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 109 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 110 111 // 0x0001 "Service Class ID List" 112 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 113 attribute = de_push_sequence(service); 114 { 115 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); 116 } 117 de_pop_sequence(service, attribute); 118 119 // 0x0004 "Protocol Descriptor List" 120 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 121 attribute = de_push_sequence(service); 122 { 123 uint8_t* l2cpProtocol = de_push_sequence(attribute); 124 { 125 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 126 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 127 } 128 de_pop_sequence(attribute, l2cpProtocol); 129 130 uint8_t* avProtocol = de_push_sequence(attribute); 131 { 132 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 133 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 134 } 135 de_pop_sequence(attribute, avProtocol); 136 } 137 de_pop_sequence(service, attribute); 138 139 // 0x0005 "Public Browse Group" 140 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 141 attribute = de_push_sequence(service); 142 { 143 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 144 } 145 de_pop_sequence(service, attribute); 146 147 // 0x0009 "Bluetooth Profile Descriptor List" 148 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 149 attribute = de_push_sequence(service); 150 { 151 uint8_t *a2dProfile = de_push_sequence(attribute); 152 { 153 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 154 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 155 } 156 de_pop_sequence(attribute, a2dProfile); 157 } 158 de_pop_sequence(service, attribute); 159 160 161 // 0x0100 "Service Name" 162 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 163 if (service_name){ 164 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 165 } else { 166 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_name), (uint8_t *) default_a2dp_source_service_name); 167 } 168 169 // 0x0100 "Provider Name" 170 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 171 if (service_provider_name){ 172 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 173 } else { 174 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_provider_name), (uint8_t *) default_a2dp_source_service_provider_name); 175 } 176 177 // 0x0311 "Supported Features" 178 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 179 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 180 } 181 182 static void a2dp_signaling_emit_reconfigured(uint16_t cid, uint8_t local_seid, uint8_t status){ 183 uint8_t event[7]; 184 int pos = 0; 185 event[pos++] = HCI_EVENT_A2DP_META; 186 event[pos++] = sizeof(event) - 2; 187 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 188 little_endian_store_16(event, pos, cid); 189 pos += 2; 190 event[pos++] = local_seid; 191 event[pos++] = status; 192 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 193 } 194 195 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 196 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 197 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 198 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 199 200 if (connection == NULL) { 201 log_info("a2dp_discover_seps_with_next_waiting_connection"); 202 a2dp_discover_seps_with_next_waiting_connection(); 203 return; 204 } 205 206 if (connection->a2dp_source_stream_endpoint_configured) return; 207 avdtp_source_discover_stream_endpoints(avdtp_cid); 208 } 209 210 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 211 log_info("a2dp_source_set_config_timer_start cid 0%02x", avdtp_cid); 212 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 213 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 214 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 215 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 216 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 217 } 218 219 static void a2dp_source_set_config_timer_stop(void){ 220 log_info("a2dp_source_set_config_timer_stop"); 221 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 222 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 223 } 224 225 // Discover seps, both incoming and outgoing 226 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 227 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 228 connection->a2dp_source_discover_seps = false; 229 230 sep_discovery_index = 0; 231 sep_discovery_count = 0; 232 memset(sep_discovery_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 233 sep_discovery_cid = connection->avdtp_cid; 234 235 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 236 if (connection->a2dp_source_outgoing_active){ 237 log_info("discover seps"); 238 avdtp_source_discover_stream_endpoints(connection->avdtp_cid); 239 } else { 240 log_info("wait a bit, then discover seps"); 241 a2dp_source_set_config_timer_start(connection->avdtp_cid); 242 } 243 } 244 245 static void a2dp_discover_seps_with_next_waiting_connection(void){ 246 btstack_assert(sep_discovery_cid == 0); 247 btstack_linked_list_iterator_t it; 248 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 249 while (btstack_linked_list_iterator_has_next(&it)){ 250 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 251 if (!next_connection->a2dp_source_discover_seps) continue; 252 a2dp_start_discovering_seps(next_connection); 253 } 254 } 255 256 static void a2dp_source_ready_for_sep_discovery(avdtp_connection_t * connection){ 257 // start discover seps now if: 258 // - outgoing active: signaling for outgoing connection 259 // - outgoing not active: incoming connection and no sep discover ongoing 260 261 // sep discovery active? 262 if (sep_discovery_cid == 0){ 263 a2dp_start_discovering_seps(connection); 264 } else { 265 // post-pone sep discovery 266 connection->a2dp_source_discover_seps = true; 267 } 268 } 269 270 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 271 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 272 avdtp_connection_t * avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); 273 btstack_assert(avdtp_connection != NULL); 274 avdtp_connection->a2dp_source_stream_endpoint_configured = true; 275 276 // stop timer 277 if (sep_discovery_cid == cid) { 278 a2dp_source_set_config_timer_stop(); 279 sep_discovery_cid = 0; 280 } 281 282 // outgoing active? 283 if (avdtp_connection->a2dp_source_state == A2DP_W4_SET_CONFIGURATION){ 284 // outgoing: discovery and config of remote sink sep successful, trigger stream open 285 avdtp_connection->a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 286 } else { 287 // incoming: accept cid, lookup local stream endpoint and wait for stream open 288 local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 289 btstack_assert(local_stream_endpoint != NULL); 290 avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 291 } 292 } 293 294 static void a2dp_source_set_config(avdtp_connection_t * connection){ 295 uint8_t remote_seid = local_stream_endpoint->set_config_remote_seid; 296 log_info("A2DP initiate set configuration locally and wait for response ... local seid 0x%02x, remote seid 0x%02x", avdtp_stream_endpoint_seid(local_stream_endpoint), remote_seid); 297 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 298 avdtp_source_set_configuration(connection->avdtp_cid, avdtp_stream_endpoint_seid(local_stream_endpoint), remote_seid, local_stream_endpoint->remote_configuration_bitmap, local_stream_endpoint->remote_configuration); 299 } 300 301 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 302 UNUSED(channel); 303 UNUSED(size); 304 305 uint16_t cid; 306 avdtp_connection_t * connection; 307 308 uint8_t signal_identifier; 309 uint8_t status; 310 uint8_t local_seid; 311 uint8_t remote_seid; 312 313 if (packet_type != HCI_EVENT_PACKET) return; 314 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 315 316 switch (packet[2]){ 317 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 318 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 319 connection = avdtp_get_connection_for_avdtp_cid(cid); 320 btstack_assert(connection != NULL); 321 322 status = avdtp_subevent_signaling_connection_established_get_status(packet); 323 if (status != ERROR_CODE_SUCCESS){ 324 // notify about connection error only if we're initiator 325 if (connection->a2dp_source_outgoing_active){ 326 log_info("A2DP source signaling connection failed status 0x%02x", status); 327 connection->a2dp_source_outgoing_active = false; 328 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 329 } 330 break; 331 } 332 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 333 connection->a2dp_source_state = A2DP_CONNECTED; 334 335 // notify app 336 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 337 338 // continue 339 a2dp_source_ready_for_sep_discovery(connection); 340 break; 341 342 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 343 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 344 connection = avdtp_get_connection_for_avdtp_cid(cid); 345 btstack_assert(connection != NULL); 346 347 if (connection->a2dp_source_state == A2DP_DISCOVER_SEPS) { 348 avdtp_sep_t sep; 349 memset(&sep, 0, sizeof(avdtp_sep_t)); 350 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 351 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 352 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 353 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 354 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 355 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 356 sep_discovery_count); 357 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 358 sep_discovery_seps[sep_discovery_count++] = sep; 359 } 360 } 361 break; 362 363 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 364 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 365 connection = avdtp_get_connection_for_avdtp_cid(cid); 366 btstack_assert(connection != NULL); 367 368 if (connection->a2dp_source_state != A2DP_DISCOVER_SEPS) break; 369 370 if (sep_discovery_count > 0){ 371 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 372 sep_discovery_index = 0; 373 connection->a2dp_source_have_config = false; 374 } else { 375 if (connection->a2dp_source_outgoing_active){ 376 connection->a2dp_source_outgoing_active = false; 377 connection = avdtp_get_connection_for_avdtp_cid(cid); 378 btstack_assert(connection != NULL); 379 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 380 } 381 382 // continue 383 connection->a2dp_source_state = A2DP_CONNECTED; 384 sep_discovery_cid = 0; 385 a2dp_discover_seps_with_next_waiting_connection(); 386 } 387 break; 388 389 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 390 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 391 connection = avdtp_get_connection_for_avdtp_cid(cid); 392 btstack_assert(connection != NULL); 393 394 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 395 396 // forward codec capability 397 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 398 399 #ifndef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 400 // select SEP if none configured yet 401 if (connection->a2dp_source_have_config == false){ 402 // find SBC stream endpoint 403 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 404 if (stream_endpoint != NULL){ 405 // choose SBC config params 406 avdtp_configuration_sbc_t configuration; 407 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 408 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 409 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 410 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 411 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 412 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 413 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 414 415 // and pre-select this endpoint 416 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 417 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 418 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 419 } 420 } 421 #endif 422 break; 423 424 // forward codec capability 425 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 426 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 427 connection = avdtp_get_connection_for_avdtp_cid(cid); 428 btstack_assert(connection != NULL); 429 430 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 431 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 432 break; 433 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 434 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 435 connection = avdtp_get_connection_for_avdtp_cid(cid); 436 btstack_assert(connection != NULL); 437 438 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 439 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 440 break; 441 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 442 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 443 connection = avdtp_get_connection_for_avdtp_cid(cid); 444 btstack_assert(connection != NULL); 445 446 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 447 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 448 break; 449 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 450 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 451 connection = avdtp_get_connection_for_avdtp_cid(cid); 452 btstack_assert(connection != NULL); 453 454 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 455 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 456 break; 457 458 // not forwarded 459 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 460 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 461 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 462 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 463 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 464 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 465 break; 466 467 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 468 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 469 connection = avdtp_get_connection_for_avdtp_cid(cid); 470 btstack_assert(connection != NULL); 471 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_state); 472 473 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 474 475 // store delay reporting capability 476 sep_discovery_seps[sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 477 478 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 479 break; 480 481 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 482 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 483 connection = avdtp_get_connection_for_avdtp_cid(cid); 484 btstack_assert(connection != NULL); 485 486 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 487 488 // forward capabilities done for endpoint 489 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 490 491 // endpoint was not suitable, check next one 492 sep_discovery_index++; 493 if (sep_discovery_index >= sep_discovery_count){ 494 495 // emit 'all capabilities for all seps reported' 496 uint8_t event[6]; 497 uint8_t pos = 0; 498 event[pos++] = HCI_EVENT_A2DP_META; 499 event[pos++] = sizeof(event) - 2; 500 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 501 little_endian_store_16(event, pos, cid); 502 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 503 504 // do we have a valid config? 505 if (connection->a2dp_source_have_config){ 506 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 507 connection->a2dp_source_have_config = false; 508 break; 509 } 510 511 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 512 connection->a2dp_source_state = A2DP_DISCOVERY_DONE; 513 // TODO call a2dp_discover_seps_with_next_waiting_connection? 514 break; 515 #else 516 // we didn't find a suitable SBC stream endpoint, sorry. 517 if (connection->a2dp_source_outgoing_active){ 518 connection->a2dp_source_outgoing_active = false; 519 connection = avdtp_get_connection_for_avdtp_cid(cid); 520 btstack_assert(connection != NULL); 521 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 522 } 523 connection->a2dp_source_state = A2DP_CONNECTED; 524 sep_discovery_cid = 0; 525 a2dp_discover_seps_with_next_waiting_connection(); 526 #endif 527 } 528 break; 529 530 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 531 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 532 connection = avdtp_get_connection_for_avdtp_cid(cid); 533 btstack_assert(connection != NULL); 534 535 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 536 break; 537 538 // forward codec configuration 539 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 540 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 541 a2dp_handle_received_configuration(packet, local_seid); 542 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 543 break; 544 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 545 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 546 a2dp_handle_received_configuration(packet, local_seid); 547 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 548 break; 549 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 550 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 551 a2dp_handle_received_configuration(packet, local_seid); 552 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 553 break; 554 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 555 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 556 a2dp_handle_received_configuration(packet, local_seid); 557 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 558 break; 559 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 560 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 561 a2dp_handle_received_configuration(packet, local_seid); 562 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 563 break; 564 565 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 566 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 567 break; 568 569 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 570 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 571 connection = avdtp_get_connection_for_avdtp_cid(cid); 572 btstack_assert(connection != NULL); 573 574 if (connection->a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 575 576 connection->a2dp_source_outgoing_active = false; 577 status = avdtp_subevent_streaming_connection_established_get_status(packet); 578 if (status != ERROR_CODE_SUCCESS){ 579 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 580 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 581 break; 582 } 583 584 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 585 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 586 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 587 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 588 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 589 break; 590 591 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 592 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 593 connection = avdtp_get_connection_for_avdtp_cid(cid); 594 btstack_assert(connection != NULL); 595 596 // reset discovery timer while remote is active for current cid 597 if ((avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && (cid == sep_discovery_cid)){ 598 log_info("Reset discovery timer"); 599 a2dp_source_set_config_timer_start(sep_discovery_cid); 600 break; 601 } 602 603 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 604 605 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_state, cid); 606 607 switch (connection->a2dp_source_state){ 608 case A2DP_GET_CAPABILITIES: 609 remote_seid = sep_discovery_seps[sep_discovery_index].seid; 610 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 611 avdtp_source_get_all_capabilities(cid, remote_seid); 612 return; 613 614 case A2DP_SET_CONFIGURATION: 615 a2dp_source_set_config(connection); 616 return; 617 618 case A2DP_W2_OPEN_STREAM_WITH_SEID: 619 log_info("A2DP open stream ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(local_stream_endpoint), local_stream_endpoint->remote_sep.seid); 620 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 621 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(local_stream_endpoint), local_stream_endpoint->remote_sep.seid); 622 break; 623 624 case A2DP_W2_RECONFIGURE_WITH_SEID: 625 log_info("A2DP reconfigured ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(local_stream_endpoint), local_stream_endpoint->remote_sep.seid); 626 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(local_stream_endpoint), ERROR_CODE_SUCCESS); 627 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 628 break; 629 630 case A2DP_STREAMING_OPENED: 631 switch (signal_identifier){ 632 case AVDTP_SI_START: 633 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 634 break; 635 case AVDTP_SI_SUSPEND: 636 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 637 break; 638 case AVDTP_SI_ABORT: 639 case AVDTP_SI_CLOSE: 640 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 641 break; 642 default: 643 break; 644 } 645 break; 646 647 default: 648 break; 649 } 650 break; 651 652 case AVDTP_SUBEVENT_SIGNALING_REJECT: 653 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 654 connection = avdtp_get_connection_for_avdtp_cid(cid); 655 btstack_assert(connection != NULL); 656 657 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 658 659 connection->a2dp_source_state = A2DP_CONNECTED; 660 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 661 break; 662 663 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 664 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 665 connection = avdtp_get_connection_for_avdtp_cid(cid); 666 btstack_assert(connection != NULL); 667 668 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 669 670 connection->a2dp_source_state = A2DP_CONNECTED; 671 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 672 break; 673 674 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 675 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 676 connection = avdtp_get_connection_for_avdtp_cid(cid); 677 btstack_assert(connection != NULL); 678 679 connection->a2dp_source_state = A2DP_CONFIGURED; 680 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 681 break; 682 683 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 684 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 685 connection = avdtp_get_connection_for_avdtp_cid(cid); 686 btstack_assert(connection != NULL); 687 688 // connect/release are passed on to app 689 if (sep_discovery_cid == cid){ 690 a2dp_source_set_config_timer_stop(); 691 connection->a2dp_source_stream_endpoint_configured = false; 692 local_stream_endpoint = NULL; 693 694 connection->a2dp_source_state = A2DP_IDLE; 695 sep_discovery_cid = 0; 696 } 697 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 698 break; 699 700 default: 701 break; 702 } 703 } 704 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 705 btstack_assert(callback != NULL); 706 707 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 708 a2dp_source_packet_handler_user = callback; 709 } 710 711 void a2dp_source_init(void){ 712 local_stream_endpoint = NULL; 713 avdtp_source_init(); 714 } 715 716 void a2dp_source_deinit(void){ 717 avdtp_source_deinit(); 718 sep_discovery_count = 0; 719 } 720 721 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 722 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 723 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 724 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 725 if (!stream_endpoint){ 726 return NULL; 727 } 728 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 729 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 730 codec_capabilities, codec_capabilities_len); 731 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 732 733 // store user codec configuration buffer 734 stream_endpoint->media_codec_type = media_codec_type; 735 stream_endpoint->media_codec_configuration_info = codec_configuration; 736 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 737 738 return stream_endpoint; 739 } 740 741 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 742 avdtp_source_finalize_stream_endpoint(stream_endpoint); 743 } 744 745 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 746 747 uint16_t outgoing_cid; 748 749 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 750 if (connection == NULL){ 751 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 752 if (status != ERROR_CODE_SUCCESS) { 753 // if there's already a connection for for remote addr, avdtp_source_connect fails, 754 // but the stream will get set-up nevertheless 755 return status; 756 } 757 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 758 btstack_assert(connection != NULL); 759 760 // setup state 761 connection->a2dp_source_outgoing_active = true; 762 connection->a2dp_source_state = A2DP_W4_CONNECTED; 763 *avdtp_cid = outgoing_cid; 764 765 } else { 766 if (connection->a2dp_source_outgoing_active || connection->a2dp_source_stream_endpoint_configured) { 767 return ERROR_CODE_COMMAND_DISALLOWED; 768 } 769 770 // check state 771 switch (connection->a2dp_source_state){ 772 case A2DP_IDLE: 773 case A2DP_CONNECTED: 774 // restart process e.g. if there no suitable stream endpoints or they had been in use 775 connection->a2dp_source_outgoing_active = true; 776 *avdtp_cid = connection->avdtp_cid; 777 a2dp_source_ready_for_sep_discovery(connection); 778 break; 779 default: 780 return ERROR_CODE_COMMAND_DISALLOWED; 781 } 782 } 783 return ERROR_CODE_SUCCESS; 784 } 785 786 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 787 return avdtp_disconnect(avdtp_cid); 788 } 789 790 791 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 792 return avdtp_start_stream(avdtp_cid, local_seid); 793 } 794 795 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 796 return avdtp_suspend_stream(avdtp_cid, local_seid); 797 } 798 799 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 800 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 801 } 802 803 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 804 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 805 } 806 807 int a2dp_source_stream_send_media_payload(uint16_t avdtp_cid, uint8_t local_seid, uint8_t * storage, int num_bytes_to_copy, uint8_t num_frames, uint8_t marker){ 808 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 809 } 810 811 uint8_t a2dp_source_stream_send_media_payload_rtp(uint16_t a2dp_cid, uint8_t local_seid, uint8_t marker, uint8_t * payload, uint16_t payload_size){ 812 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 813 } 814 815 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 816 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 817 } 818 819 static uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 820 avdtp_media_codec_type_t codec_type) { 821 822 // check state 823 switch (connection->a2dp_source_state){ 824 case A2DP_DISCOVERY_DONE: 825 case A2DP_GET_CAPABILITIES: 826 break; 827 default: 828 return ERROR_CODE_COMMAND_DISALLOWED; 829 } 830 831 // lookup local stream endpoint 832 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 833 if (stream_endpoint == NULL){ 834 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 835 } 836 837 // lookup remote stream endpoint 838 avdtp_sep_t * remote_sep = NULL; 839 uint8_t i; 840 for (i=0; i < sep_discovery_count; i++){ 841 if (sep_discovery_seps[i].seid == remote_seid){ 842 remote_sep = &sep_discovery_seps[i]; 843 } 844 } 845 if (remote_sep == NULL){ 846 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 847 } 848 849 // set media configuration 850 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 851 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 852 stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 853 // remote seid to use 854 stream_endpoint->set_config_remote_seid = remote_seid; 855 // enable delay reporting if supported 856 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 857 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 858 } 859 860 // suitable Sink stream endpoint found, configure it 861 local_stream_endpoint = stream_endpoint; 862 connection->a2dp_source_have_config = true; 863 864 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 865 // continue outgoing configuration 866 if (connection->a2dp_source_state == A2DP_DISCOVERY_DONE){ 867 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 868 } 869 #endif 870 871 return ERROR_CODE_SUCCESS; 872 } 873 874 uint8_t a2dp_source_set_config_sbc(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_sbc_t * configuration){ 875 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 876 if (connection == NULL){ 877 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 878 } 879 880 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 881 if (status != 0) { 882 return status; 883 } 884 // set config in reserved buffer 885 local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) local_stream_endpoint->media_codec_info; 886 local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 887 avdtp_config_sbc_store(local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 888 889 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 890 a2dp_source_set_config(connection); 891 #endif 892 893 return ERROR_CODE_SUCCESS; 894 } 895 896 uint8_t a2dp_source_set_config_mpeg_audio(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_mpeg_audio_t * configuration){ 897 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 898 if (connection == NULL){ 899 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 900 } 901 902 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 903 if (status != 0) { 904 return status; 905 } 906 907 // set config in reserved buffer 908 local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *)local_stream_endpoint->media_codec_info; 909 local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 910 avdtp_config_mpeg_audio_store( local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 911 912 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 913 a2dp_source_set_config(connection); 914 #endif 915 916 return ERROR_CODE_SUCCESS; 917 } 918 919 uint8_t a2dp_source_set_config_mpeg_aac(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_mpeg_aac_t * configuration){ 920 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 921 if (connection == NULL){ 922 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 923 } 924 925 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 926 if (status != 0) { 927 return status; 928 } 929 local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) local_stream_endpoint->media_codec_info; 930 local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 931 avdtp_config_mpeg_aac_store( local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 932 933 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 934 a2dp_source_set_config(connection); 935 #endif 936 937 return ERROR_CODE_SUCCESS; 938 } 939 940 uint8_t a2dp_source_set_config_atrac(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_atrac_t * configuration){ 941 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 942 if (connection == NULL){ 943 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 944 } 945 946 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 947 if (status != 0) { 948 return status; 949 } 950 951 local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) local_stream_endpoint->media_codec_info; 952 local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 953 avdtp_config_atrac_store( local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 954 955 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 956 a2dp_source_set_config(connection); 957 #endif 958 959 return ERROR_CODE_SUCCESS; 960 } 961 962 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 963 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 964 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 965 if (connection == NULL){ 966 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 967 } 968 969 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 970 if (status != 0) { 971 return status; 972 } 973 974 local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 975 local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 976 977 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 978 a2dp_source_set_config(connection); 979 #endif 980 981 return status; 982 } 983 984 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 985 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 986 if (connection == NULL){ 987 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 988 } 989 990 if (connection->a2dp_source_state != A2DP_STREAMING_OPENED) { 991 return ERROR_CODE_COMMAND_DISALLOWED; 992 } 993 994 btstack_assert(local_stream_endpoint != NULL); 995 996 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 997 998 avdtp_media_codec_type_t codec_type = local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 999 uint8_t codec_info_len; 1000 switch (codec_type){ 1001 case AVDTP_CODEC_SBC: 1002 codec_info_len = 4; 1003 (void)memcpy(local_stream_endpoint->media_codec_info, local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1004 avdtp_config_sbc_set_sampling_frequency(local_stream_endpoint->media_codec_info, sampling_frequency); 1005 break; 1006 case AVDTP_CODEC_MPEG_1_2_AUDIO: 1007 codec_info_len = 4; 1008 (void)memcpy(local_stream_endpoint->media_codec_info, local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1009 avdtp_config_mpeg_audio_set_sampling_frequency(local_stream_endpoint->media_codec_info, sampling_frequency); 1010 break; 1011 case AVDTP_CODEC_MPEG_2_4_AAC: 1012 codec_info_len = 6; 1013 (void)memcpy(local_stream_endpoint->media_codec_info, local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1014 avdtp_config_mpeg_aac_set_sampling_frequency(local_stream_endpoint->media_codec_info, sampling_frequency); 1015 break; 1016 case AVDTP_CODEC_ATRAC_FAMILY: 1017 codec_info_len = 7; 1018 (void)memcpy(local_stream_endpoint->media_codec_info, local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1019 avdtp_config_atrac_set_sampling_frequency(local_stream_endpoint->media_codec_info, sampling_frequency); 1020 break; 1021 default: 1022 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1023 } 1024 1025 avdtp_capabilities_t new_configuration; 1026 new_configuration.media_codec.media_type = AVDTP_AUDIO; 1027 new_configuration.media_codec.media_codec_type = codec_type; 1028 new_configuration.media_codec.media_codec_information_len = codec_info_len; 1029 new_configuration.media_codec.media_codec_information = local_stream_endpoint->media_codec_info; 1030 1031 // start reconfigure 1032 connection->a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 1033 1034 return avdtp_source_reconfigure( 1035 avdtp_cid, 1036 avdtp_stream_endpoint_seid(local_stream_endpoint), 1037 local_stream_endpoint->remote_sep.seid, 1038 1 << AVDTP_MEDIA_CODEC, 1039 new_configuration 1040 ); 1041 } 1042