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_timer_source_t a2dp_source_set_config_timer; 73 static btstack_packet_handler_t a2dp_source_packet_handler_user; 74 75 // remote sep discovery - singleton, sep_discovery_cid is used as mutex 76 static uint16_t sep_discovery_cid; 77 static uint16_t sep_discovery_count; 78 static uint16_t sep_discovery_index; 79 static avdtp_sep_t sep_discovery_seps[AVDTP_MAX_SEP_NUM]; 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_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 295 UNUSED(channel); 296 UNUSED(size); 297 298 uint16_t cid; 299 avdtp_connection_t * connection; 300 301 uint8_t signal_identifier; 302 uint8_t status; 303 uint8_t local_seid; 304 uint8_t remote_seid; 305 306 if (packet_type != HCI_EVENT_PACKET) return; 307 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 308 309 switch (packet[2]){ 310 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 311 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 312 connection = avdtp_get_connection_for_avdtp_cid(cid); 313 btstack_assert(connection != NULL); 314 315 status = avdtp_subevent_signaling_connection_established_get_status(packet); 316 if (status != ERROR_CODE_SUCCESS){ 317 // notify about connection error only if we're initiator 318 if (connection->a2dp_source_outgoing_active){ 319 log_info("A2DP source signaling connection failed status 0x%02x", status); 320 connection->a2dp_source_outgoing_active = false; 321 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 322 } 323 break; 324 } 325 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 326 connection->a2dp_source_state = A2DP_CONNECTED; 327 328 // notify app 329 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 330 331 // continue 332 a2dp_source_ready_for_sep_discovery(connection); 333 break; 334 335 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 336 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 337 connection = avdtp_get_connection_for_avdtp_cid(cid); 338 btstack_assert(connection != NULL); 339 340 if (connection->a2dp_source_state == A2DP_DISCOVER_SEPS) { 341 avdtp_sep_t sep; 342 memset(&sep, 0, sizeof(avdtp_sep_t)); 343 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 344 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 345 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 346 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 347 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 348 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 349 sep_discovery_count); 350 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 351 sep_discovery_seps[sep_discovery_count++] = sep; 352 } 353 } 354 break; 355 356 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 357 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 358 connection = avdtp_get_connection_for_avdtp_cid(cid); 359 btstack_assert(connection != NULL); 360 361 if (connection->a2dp_source_state != A2DP_DISCOVER_SEPS) break; 362 363 if (sep_discovery_count > 0){ 364 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 365 sep_discovery_index = 0; 366 connection->a2dp_source_have_config = false; 367 } else { 368 if (connection->a2dp_source_outgoing_active){ 369 connection->a2dp_source_outgoing_active = false; 370 connection = avdtp_get_connection_for_avdtp_cid(cid); 371 btstack_assert(connection != NULL); 372 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 373 } 374 375 // continue 376 connection->a2dp_source_state = A2DP_CONNECTED; 377 a2dp_discover_seps_with_next_waiting_connection(); 378 } 379 break; 380 381 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 382 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 383 connection = avdtp_get_connection_for_avdtp_cid(cid); 384 btstack_assert(connection != NULL); 385 386 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 387 388 // forward codec capability 389 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 390 391 // select SEP if none configured yet 392 if (connection->a2dp_source_have_config == false){ 393 // find SBC stream endpoint 394 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 395 if (stream_endpoint != NULL){ 396 // choose SBC config params 397 avdtp_configuration_sbc_t configuration; 398 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 399 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 400 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 401 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 402 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 403 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 404 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 405 406 // and pre-select this endpoint 407 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 408 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 409 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 410 } 411 } 412 break; 413 414 // forward codec capability 415 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 416 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 417 connection = avdtp_get_connection_for_avdtp_cid(cid); 418 btstack_assert(connection != NULL); 419 420 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 421 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 422 break; 423 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 424 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 425 connection = avdtp_get_connection_for_avdtp_cid(cid); 426 btstack_assert(connection != NULL); 427 428 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 429 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 430 break; 431 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 432 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 433 connection = avdtp_get_connection_for_avdtp_cid(cid); 434 btstack_assert(connection != NULL); 435 436 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 437 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 438 break; 439 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 440 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 441 connection = avdtp_get_connection_for_avdtp_cid(cid); 442 btstack_assert(connection != NULL); 443 444 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 445 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 446 break; 447 448 // not forwarded 449 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 450 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 451 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 452 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 453 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 454 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 455 break; 456 457 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 458 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 459 connection = avdtp_get_connection_for_avdtp_cid(cid); 460 btstack_assert(connection != NULL); 461 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_state); 462 463 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 464 465 // store delay reporting capability 466 sep_discovery_seps[sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 467 468 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 469 break; 470 471 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 472 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 473 connection = avdtp_get_connection_for_avdtp_cid(cid); 474 btstack_assert(connection != NULL); 475 476 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 477 478 // forward capabilities done for endpoint 479 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 480 481 // endpoint was not suitable, check next one 482 sep_discovery_index++; 483 if (sep_discovery_index >= sep_discovery_count){ 484 485 // emit 'all capabilities for all seps reported' 486 uint8_t event[6]; 487 uint8_t pos = 0; 488 event[pos++] = HCI_EVENT_A2DP_META; 489 event[pos++] = sizeof(event) - 2; 490 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 491 little_endian_store_16(event, pos, cid); 492 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 493 494 // do we have a valid config? 495 if (connection->a2dp_source_have_config){ 496 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 497 connection->a2dp_source_have_config = false; 498 break; 499 } 500 501 // we didn't find a suitable SBC stream endpoint, sorry. 502 if (connection->a2dp_source_outgoing_active){ 503 connection->a2dp_source_outgoing_active = false; 504 connection = avdtp_get_connection_for_avdtp_cid(cid); 505 btstack_assert(connection != NULL); 506 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 507 } 508 connection->a2dp_source_state = A2DP_CONNECTED; 509 a2dp_discover_seps_with_next_waiting_connection(); 510 } 511 break; 512 513 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 514 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 515 connection = avdtp_get_connection_for_avdtp_cid(cid); 516 btstack_assert(connection != NULL); 517 518 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 519 break; 520 521 // forward codec configuration 522 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 523 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 524 a2dp_handle_received_configuration(packet, local_seid); 525 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 526 break; 527 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 528 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 529 a2dp_handle_received_configuration(packet, local_seid); 530 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 531 break; 532 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 533 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 534 a2dp_handle_received_configuration(packet, local_seid); 535 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 536 break; 537 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 538 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 539 a2dp_handle_received_configuration(packet, local_seid); 540 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 541 break; 542 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 543 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 544 a2dp_handle_received_configuration(packet, local_seid); 545 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 546 break; 547 548 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 549 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 550 break; 551 552 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 553 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 554 connection = avdtp_get_connection_for_avdtp_cid(cid); 555 btstack_assert(connection != NULL); 556 557 if (connection->a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 558 559 connection->a2dp_source_outgoing_active = false; 560 status = avdtp_subevent_streaming_connection_established_get_status(packet); 561 if (status != ERROR_CODE_SUCCESS){ 562 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 563 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 564 break; 565 } 566 567 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 568 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 569 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 570 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 571 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 572 break; 573 574 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 575 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 576 connection = avdtp_get_connection_for_avdtp_cid(cid); 577 btstack_assert(connection != NULL); 578 579 // reset discovery timer while remote is active 580 if (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) { 581 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(&a2dp_source_set_config_timer); 582 if ((avdtp_cid == 0) || (avdtp_cid != cid)) break; 583 log_info("Reset discovery timer"); 584 a2dp_source_set_config_timer_start(avdtp_cid); 585 break; 586 } 587 588 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 589 590 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_state, cid); 591 592 switch (connection->a2dp_source_state){ 593 case A2DP_GET_CAPABILITIES: 594 remote_seid = sep_discovery_seps[sep_discovery_index].seid; 595 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 596 avdtp_source_get_all_capabilities(cid, remote_seid); 597 return; 598 599 case A2DP_SET_CONFIGURATION: 600 remote_seid = local_stream_endpoint->set_config_remote_seid; 601 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); 602 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 603 avdtp_source_set_configuration(cid, avdtp_stream_endpoint_seid(local_stream_endpoint), remote_seid, local_stream_endpoint->remote_configuration_bitmap, local_stream_endpoint->remote_configuration); 604 return; 605 606 case A2DP_W2_OPEN_STREAM_WITH_SEID: 607 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); 608 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 609 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(local_stream_endpoint), local_stream_endpoint->remote_sep.seid); 610 break; 611 612 case A2DP_W2_RECONFIGURE_WITH_SEID: 613 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); 614 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(local_stream_endpoint), ERROR_CODE_SUCCESS); 615 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 616 break; 617 618 case A2DP_STREAMING_OPENED: 619 switch (signal_identifier){ 620 case AVDTP_SI_START: 621 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 622 break; 623 case AVDTP_SI_SUSPEND: 624 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 625 break; 626 case AVDTP_SI_ABORT: 627 case AVDTP_SI_CLOSE: 628 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 629 break; 630 default: 631 break; 632 } 633 break; 634 635 default: 636 break; 637 } 638 break; 639 640 case AVDTP_SUBEVENT_SIGNALING_REJECT: 641 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 642 connection = avdtp_get_connection_for_avdtp_cid(cid); 643 btstack_assert(connection != NULL); 644 645 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 646 647 connection->a2dp_source_state = A2DP_CONNECTED; 648 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 649 break; 650 651 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 652 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 653 connection = avdtp_get_connection_for_avdtp_cid(cid); 654 btstack_assert(connection != NULL); 655 656 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 657 658 connection->a2dp_source_state = A2DP_CONNECTED; 659 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 660 break; 661 662 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 663 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 664 connection = avdtp_get_connection_for_avdtp_cid(cid); 665 btstack_assert(connection != NULL); 666 667 connection->a2dp_source_state = A2DP_CONFIGURED; 668 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 669 break; 670 671 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 672 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 673 connection = avdtp_get_connection_for_avdtp_cid(cid); 674 btstack_assert(connection != NULL); 675 676 // connect/release are passed on to app 677 if (sep_discovery_cid == cid){ 678 a2dp_source_set_config_timer_stop(); 679 connection->a2dp_source_stream_endpoint_configured = false; 680 local_stream_endpoint = NULL; 681 682 connection->a2dp_source_state = A2DP_IDLE; 683 sep_discovery_cid = 0; 684 } 685 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 686 break; 687 688 default: 689 break; 690 } 691 } 692 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 693 btstack_assert(callback != NULL); 694 695 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 696 a2dp_source_packet_handler_user = callback; 697 } 698 699 void a2dp_source_init(void){ 700 local_stream_endpoint = NULL; 701 avdtp_source_init(); 702 } 703 704 void a2dp_source_deinit(void){ 705 avdtp_source_deinit(); 706 sep_discovery_count = 0; 707 } 708 709 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 710 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 711 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 712 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 713 if (!stream_endpoint){ 714 return NULL; 715 } 716 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 717 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 718 codec_capabilities, codec_capabilities_len); 719 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 720 721 // store user codec configuration buffer 722 stream_endpoint->media_codec_type = media_codec_type; 723 stream_endpoint->media_codec_configuration_info = codec_configuration; 724 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 725 726 return stream_endpoint; 727 } 728 729 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 730 avdtp_source_finalize_stream_endpoint(stream_endpoint); 731 } 732 733 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 734 735 uint16_t outgoing_cid; 736 737 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 738 if (connection == NULL){ 739 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 740 if (status != ERROR_CODE_SUCCESS) { 741 // if there's already a connection for for remote addr, avdtp_source_connect fails, 742 // but the stream will get set-up nevertheless 743 return status; 744 } 745 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 746 btstack_assert(connection != NULL); 747 748 // setup state 749 connection->a2dp_source_outgoing_active = true; 750 connection->a2dp_source_state = A2DP_W4_CONNECTED; 751 *avdtp_cid = outgoing_cid; 752 753 } else { 754 if (connection->a2dp_source_outgoing_active || connection->a2dp_source_stream_endpoint_configured) { 755 return ERROR_CODE_COMMAND_DISALLOWED; 756 } 757 758 // check state 759 switch (connection->a2dp_source_state){ 760 case A2DP_IDLE: 761 case A2DP_CONNECTED: 762 // restart process e.g. if there no suitable stream endpoints or they had been in use 763 connection->a2dp_source_outgoing_active = true; 764 *avdtp_cid = connection->avdtp_cid; 765 a2dp_source_ready_for_sep_discovery(connection); 766 break; 767 default: 768 return ERROR_CODE_COMMAND_DISALLOWED; 769 } 770 } 771 return ERROR_CODE_SUCCESS; 772 } 773 774 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 775 return avdtp_disconnect(avdtp_cid); 776 } 777 778 779 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 780 return avdtp_start_stream(avdtp_cid, local_seid); 781 } 782 783 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 784 return avdtp_suspend_stream(avdtp_cid, local_seid); 785 } 786 787 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 788 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 789 } 790 791 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 792 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 793 } 794 795 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){ 796 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 797 } 798 799 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){ 800 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 801 } 802 803 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 804 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 805 } 806 807 static uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 808 avdtp_media_codec_type_t codec_type) { 809 810 // lookup local stream endpoint 811 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 812 if (stream_endpoint == NULL){ 813 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 814 } 815 816 // lookup remote stream endpoint 817 avdtp_sep_t * remote_sep = NULL; 818 uint8_t i; 819 for (i=0; i < sep_discovery_count; i++){ 820 if (sep_discovery_seps[i].seid == remote_seid){ 821 remote_sep = &sep_discovery_seps[i]; 822 } 823 } 824 if (remote_sep == NULL){ 825 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 826 } 827 828 // set media configuration 829 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 830 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 831 stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 832 // remote seid to use 833 stream_endpoint->set_config_remote_seid = remote_seid; 834 // enable delay reporting if supported 835 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 836 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 837 } 838 839 // suitable Sink stream endpoint found, configure it 840 local_stream_endpoint = stream_endpoint; 841 connection->a2dp_source_have_config = true; 842 843 return ERROR_CODE_SUCCESS; 844 } 845 846 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){ 847 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 848 if (connection == NULL){ 849 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 850 } 851 852 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 853 if (status != 0) { 854 return status; 855 } 856 // set config in reserved buffer 857 local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) local_stream_endpoint->media_codec_info; 858 local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 859 avdtp_config_sbc_store(local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 860 861 return ERROR_CODE_SUCCESS; 862 } 863 864 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){ 865 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 866 if (connection == NULL){ 867 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 868 } 869 870 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 871 if (status != 0) { 872 return status; 873 } 874 875 // set config in reserved buffer 876 local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *)local_stream_endpoint->media_codec_info; 877 local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 878 avdtp_config_mpeg_audio_store( local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 879 880 return ERROR_CODE_SUCCESS; 881 } 882 883 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){ 884 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 885 if (connection == NULL){ 886 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 887 } 888 889 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 890 if (status != 0) { 891 return status; 892 } 893 local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) local_stream_endpoint->media_codec_info; 894 local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 895 avdtp_config_mpeg_aac_store( local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 896 897 return ERROR_CODE_SUCCESS; 898 } 899 900 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){ 901 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 902 if (connection == NULL){ 903 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 904 } 905 906 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 907 if (status != 0) { 908 return status; 909 } 910 911 local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) local_stream_endpoint->media_codec_info; 912 local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 913 avdtp_config_atrac_store( local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 914 915 return ERROR_CODE_SUCCESS; 916 } 917 918 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 919 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 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_NON_A2DP); 926 if (status != 0) { 927 return status; 928 } 929 930 local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 931 local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 932 933 return status; 934 } 935 936 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 937 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 938 if (connection == NULL){ 939 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 940 } 941 942 if (connection->a2dp_source_state != A2DP_STREAMING_OPENED) { 943 return ERROR_CODE_COMMAND_DISALLOWED; 944 } 945 946 btstack_assert(local_stream_endpoint != NULL); 947 948 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 949 950 avdtp_media_codec_type_t codec_type = local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 951 uint8_t codec_info_len; 952 switch (codec_type){ 953 case AVDTP_CODEC_SBC: 954 codec_info_len = 4; 955 (void)memcpy(local_stream_endpoint->media_codec_info, local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 956 avdtp_config_sbc_set_sampling_frequency(local_stream_endpoint->media_codec_info, sampling_frequency); 957 break; 958 case AVDTP_CODEC_MPEG_1_2_AUDIO: 959 codec_info_len = 4; 960 (void)memcpy(local_stream_endpoint->media_codec_info, local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 961 avdtp_config_mpeg_audio_set_sampling_frequency(local_stream_endpoint->media_codec_info, sampling_frequency); 962 break; 963 case AVDTP_CODEC_MPEG_2_4_AAC: 964 codec_info_len = 6; 965 (void)memcpy(local_stream_endpoint->media_codec_info, local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 966 avdtp_config_mpeg_aac_set_sampling_frequency(local_stream_endpoint->media_codec_info, sampling_frequency); 967 break; 968 case AVDTP_CODEC_ATRAC_FAMILY: 969 codec_info_len = 7; 970 (void)memcpy(local_stream_endpoint->media_codec_info, local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 971 avdtp_config_atrac_set_sampling_frequency(local_stream_endpoint->media_codec_info, sampling_frequency); 972 break; 973 default: 974 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 975 } 976 977 avdtp_capabilities_t new_configuration; 978 new_configuration.media_codec.media_type = AVDTP_AUDIO; 979 new_configuration.media_codec.media_codec_type = codec_type; 980 new_configuration.media_codec.media_codec_information_len = codec_info_len; 981 new_configuration.media_codec.media_codec_information = local_stream_endpoint->media_codec_info; 982 983 // start reconfigure 984 connection->a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 985 986 return avdtp_source_reconfigure( 987 avdtp_cid, 988 avdtp_stream_endpoint_seid(local_stream_endpoint), 989 local_stream_endpoint->remote_sep.seid, 990 1 << AVDTP_MEDIA_CODEC, 991 new_configuration 992 ); 993 } 994