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 void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 82 static void a2dp_discover_seps_with_next_waiting_connection(void); 83 84 static void a2dp_source_streaming_emit_connection_failed(avdtp_connection_t *connection, uint8_t status) { 85 uint8_t event[14]; 86 int pos = 0; 87 event[pos++] = HCI_EVENT_A2DP_META; 88 event[pos++] = sizeof(event) - 2; 89 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 90 little_endian_store_16(event, pos, connection->avdtp_cid); 91 pos += 2; 92 reverse_bd_addr(connection->remote_addr, &event[pos]); 93 pos += 6; 94 event[pos++] = 0; 95 event[pos++] = 0; 96 event[pos++] = status; 97 98 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 99 } 100 101 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){ 102 uint8_t* attribute; 103 de_create_sequence(service); 104 105 // 0x0000 "Service Record Handle" 106 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 107 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 108 109 // 0x0001 "Service Class ID List" 110 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 111 attribute = de_push_sequence(service); 112 { 113 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); 114 } 115 de_pop_sequence(service, attribute); 116 117 // 0x0004 "Protocol Descriptor List" 118 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 119 attribute = de_push_sequence(service); 120 { 121 uint8_t* l2cpProtocol = de_push_sequence(attribute); 122 { 123 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 124 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 125 } 126 de_pop_sequence(attribute, l2cpProtocol); 127 128 uint8_t* avProtocol = de_push_sequence(attribute); 129 { 130 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 131 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 132 } 133 de_pop_sequence(attribute, avProtocol); 134 } 135 de_pop_sequence(service, attribute); 136 137 // 0x0005 "Public Browse Group" 138 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 139 attribute = de_push_sequence(service); 140 { 141 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 142 } 143 de_pop_sequence(service, attribute); 144 145 // 0x0009 "Bluetooth Profile Descriptor List" 146 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 147 attribute = de_push_sequence(service); 148 { 149 uint8_t *a2dProfile = de_push_sequence(attribute); 150 { 151 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 152 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 153 } 154 de_pop_sequence(attribute, a2dProfile); 155 } 156 de_pop_sequence(service, attribute); 157 158 159 // 0x0100 "Service Name" 160 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 161 if (service_name){ 162 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 163 } else { 164 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_name), (uint8_t *) default_a2dp_source_service_name); 165 } 166 167 // 0x0100 "Provider Name" 168 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 169 if (service_provider_name){ 170 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 171 } else { 172 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_provider_name), (uint8_t *) default_a2dp_source_service_provider_name); 173 } 174 175 // 0x0311 "Supported Features" 176 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 177 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 178 } 179 180 static void a2dp_signaling_emit_reconfigured(uint16_t cid, uint8_t local_seid, uint8_t status){ 181 uint8_t event[7]; 182 int pos = 0; 183 event[pos++] = HCI_EVENT_A2DP_META; 184 event[pos++] = sizeof(event) - 2; 185 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 186 little_endian_store_16(event, pos, cid); 187 pos += 2; 188 event[pos++] = local_seid; 189 event[pos++] = status; 190 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 191 } 192 193 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 194 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 195 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 196 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 197 198 if (connection == NULL) { 199 log_info("a2dp_discover_seps_with_next_waiting_connection"); 200 a2dp_discover_seps_with_next_waiting_connection(); 201 return; 202 } 203 204 if (connection->a2dp_source_stream_endpoint_configured) return; 205 avdtp_source_discover_stream_endpoints(avdtp_cid); 206 } 207 208 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 209 log_info("a2dp_source_set_config_timer_start cid 0%02x", avdtp_cid); 210 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 211 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 212 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 213 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 214 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 215 } 216 217 static void a2dp_source_set_config_timer_stop(void){ 218 log_info("a2dp_source_set_config_timer_stop"); 219 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 220 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 221 } 222 223 // Discover seps, both incoming and outgoing 224 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 225 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 226 connection->a2dp_source_discover_seps = false; 227 228 sep_discovery_index = 0; 229 sep_discovery_count = 0; 230 memset(sep_discovery_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 231 sep_discovery_cid = connection->avdtp_cid; 232 233 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 234 if (connection->a2dp_source_outgoing_active){ 235 log_info("discover seps"); 236 avdtp_source_discover_stream_endpoints(connection->avdtp_cid); 237 } else { 238 log_info("wait a bit, then discover seps"); 239 a2dp_source_set_config_timer_start(connection->avdtp_cid); 240 } 241 } 242 243 static void a2dp_discover_seps_with_next_waiting_connection(void){ 244 btstack_assert(sep_discovery_cid == 0); 245 btstack_linked_list_iterator_t it; 246 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 247 while (btstack_linked_list_iterator_has_next(&it)){ 248 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 249 if (!next_connection->a2dp_source_discover_seps) continue; 250 a2dp_start_discovering_seps(next_connection); 251 } 252 } 253 254 static void a2dp_source_ready_for_sep_discovery(avdtp_connection_t * connection){ 255 // start discover seps now if: 256 // - outgoing active: signaling for outgoing connection 257 // - outgoing not active: incoming connection and no sep discover ongoing 258 259 // sep discovery active? 260 if (sep_discovery_cid == 0){ 261 a2dp_start_discovering_seps(connection); 262 } else { 263 // post-pone sep discovery 264 connection->a2dp_source_discover_seps = true; 265 } 266 } 267 268 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 269 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 270 avdtp_connection_t *avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); 271 btstack_assert(avdtp_connection != NULL); 272 avdtp_connection->a2dp_source_local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 273 // bail out if local seid invalid 274 if (!avdtp_connection->a2dp_source_local_stream_endpoint) return; 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 avdtp_connection->a2dp_source_stream_endpoint_configured = true; 283 284 switch (avdtp_connection->a2dp_source_state) { 285 case A2DP_W4_SET_CONFIGURATION: 286 // outgoing: discovery and config of remote sink sep successful, trigger stream open 287 avdtp_connection->a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 288 break; 289 case A2DP_W4_GET_CONFIGURATION: 290 // incoming: wait for stream open 291 avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 292 break; 293 default: 294 // wait for configuration after sending reconfigure - keep state 295 break; 296 } 297 } 298 299 static void a2dp_source_set_config(avdtp_connection_t * connection){ 300 uint8_t remote_seid = connection->a2dp_source_local_stream_endpoint->set_config_remote_seid; 301 log_info("A2DP initiate set configuration locally and wait for response ... local seid 0x%02x, remote seid 0x%02x", avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), remote_seid); 302 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 303 avdtp_source_set_configuration(connection->avdtp_cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), remote_seid, connection->a2dp_source_local_stream_endpoint->remote_configuration_bitmap, connection->a2dp_source_local_stream_endpoint->remote_configuration); 304 } 305 306 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 307 UNUSED(channel); 308 UNUSED(size); 309 310 uint16_t cid; 311 avdtp_connection_t * connection; 312 313 uint8_t signal_identifier; 314 uint8_t status; 315 uint8_t local_seid; 316 uint8_t remote_seid; 317 318 if (packet_type != HCI_EVENT_PACKET) return; 319 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 320 321 switch (packet[2]){ 322 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 323 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 324 connection = avdtp_get_connection_for_avdtp_cid(cid); 325 btstack_assert(connection != NULL); 326 327 status = avdtp_subevent_signaling_connection_established_get_status(packet); 328 if (status != ERROR_CODE_SUCCESS){ 329 // notify about connection error only if we're initiator 330 if (connection->a2dp_source_outgoing_active){ 331 log_info("A2DP source signaling connection failed status 0x%02x", status); 332 connection->a2dp_source_outgoing_active = false; 333 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 334 } 335 break; 336 } 337 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 338 connection->a2dp_source_state = A2DP_CONNECTED; 339 340 // notify app 341 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 342 343 // continue 344 a2dp_source_ready_for_sep_discovery(connection); 345 break; 346 347 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 348 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 349 connection = avdtp_get_connection_for_avdtp_cid(cid); 350 btstack_assert(connection != NULL); 351 352 if (connection->a2dp_source_state == A2DP_DISCOVER_SEPS) { 353 avdtp_sep_t sep; 354 memset(&sep, 0, sizeof(avdtp_sep_t)); 355 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 356 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 357 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 358 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 359 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 360 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 361 sep_discovery_count); 362 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 363 sep_discovery_seps[sep_discovery_count++] = sep; 364 } 365 } 366 break; 367 368 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 369 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 370 connection = avdtp_get_connection_for_avdtp_cid(cid); 371 btstack_assert(connection != NULL); 372 373 if (connection->a2dp_source_state != A2DP_DISCOVER_SEPS) break; 374 375 if (sep_discovery_count > 0){ 376 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 377 sep_discovery_index = 0; 378 connection->a2dp_source_have_config = false; 379 } else { 380 if (connection->a2dp_source_outgoing_active){ 381 connection->a2dp_source_outgoing_active = false; 382 connection = avdtp_get_connection_for_avdtp_cid(cid); 383 btstack_assert(connection != NULL); 384 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 385 } 386 387 // continue 388 connection->a2dp_source_state = A2DP_CONNECTED; 389 sep_discovery_cid = 0; 390 a2dp_discover_seps_with_next_waiting_connection(); 391 } 392 break; 393 394 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 395 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 396 connection = avdtp_get_connection_for_avdtp_cid(cid); 397 btstack_assert(connection != NULL); 398 399 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 400 401 // forward codec capability 402 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 403 404 #ifndef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 405 // select SEP if none configured yet 406 if (connection->a2dp_source_have_config == false){ 407 // find SBC stream endpoint 408 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 409 if (stream_endpoint != NULL){ 410 // choose SBC config params 411 avdtp_configuration_sbc_t configuration; 412 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 413 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 414 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 415 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 416 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 417 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 418 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 419 420 // and pre-select this endpoint 421 stream_endpoint->sep.in_use = 1; 422 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 423 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 424 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 425 } 426 } 427 #endif 428 break; 429 430 // forward codec capability 431 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 432 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_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_MPEG_AUDIO_CAPABILITY); 438 break; 439 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 440 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_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_MPEG_AAC_CAPABILITY); 446 break; 447 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 448 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 449 connection = avdtp_get_connection_for_avdtp_cid(cid); 450 btstack_assert(connection != NULL); 451 452 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 453 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 454 break; 455 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 456 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 457 connection = avdtp_get_connection_for_avdtp_cid(cid); 458 btstack_assert(connection != NULL); 459 460 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 461 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 462 break; 463 464 // not forwarded 465 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 466 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 467 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 468 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 469 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 470 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 471 break; 472 473 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 474 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 475 connection = avdtp_get_connection_for_avdtp_cid(cid); 476 btstack_assert(connection != NULL); 477 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_state); 478 479 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 480 481 // store delay reporting capability 482 sep_discovery_seps[sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 483 484 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 485 break; 486 487 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 488 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 489 connection = avdtp_get_connection_for_avdtp_cid(cid); 490 btstack_assert(connection != NULL); 491 492 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 493 494 // forward capabilities done for endpoint 495 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 496 497 // endpoint was not suitable, check next one 498 sep_discovery_index++; 499 if (sep_discovery_index >= sep_discovery_count){ 500 501 // emit 'all capabilities for all seps reported' 502 uint8_t event[6]; 503 uint8_t pos = 0; 504 event[pos++] = HCI_EVENT_A2DP_META; 505 event[pos++] = sizeof(event) - 2; 506 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 507 little_endian_store_16(event, pos, cid); 508 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 509 510 // do we have a valid config? 511 if (connection->a2dp_source_have_config){ 512 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 513 connection->a2dp_source_have_config = false; 514 break; 515 } 516 517 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 518 connection->a2dp_source_state = A2DP_DISCOVERY_DONE; 519 // TODO call a2dp_discover_seps_with_next_waiting_connection? 520 break; 521 #else 522 // we didn't find a suitable SBC stream endpoint, sorry. 523 if (connection->a2dp_source_outgoing_active){ 524 connection->a2dp_source_outgoing_active = false; 525 connection = avdtp_get_connection_for_avdtp_cid(cid); 526 btstack_assert(connection != NULL); 527 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 528 } 529 connection->a2dp_source_state = A2DP_CONNECTED; 530 sep_discovery_cid = 0; 531 a2dp_discover_seps_with_next_waiting_connection(); 532 #endif 533 } 534 break; 535 536 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 537 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 538 connection = avdtp_get_connection_for_avdtp_cid(cid); 539 btstack_assert(connection != NULL); 540 541 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 542 break; 543 544 // forward codec configuration 545 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 546 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 547 a2dp_handle_received_configuration(packet, local_seid); 548 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 549 break; 550 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 551 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 552 a2dp_handle_received_configuration(packet, local_seid); 553 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 554 break; 555 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 556 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 557 a2dp_handle_received_configuration(packet, local_seid); 558 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 559 break; 560 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 561 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 562 a2dp_handle_received_configuration(packet, local_seid); 563 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 564 break; 565 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 566 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 567 a2dp_handle_received_configuration(packet, local_seid); 568 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 569 break; 570 571 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 572 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 573 break; 574 575 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 576 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 577 connection = avdtp_get_connection_for_avdtp_cid(cid); 578 btstack_assert(connection != NULL); 579 580 if (connection->a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 581 582 connection->a2dp_source_outgoing_active = false; 583 status = avdtp_subevent_streaming_connection_established_get_status(packet); 584 if (status != ERROR_CODE_SUCCESS){ 585 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 586 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 587 break; 588 } 589 590 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 591 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 592 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 593 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 594 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 595 break; 596 597 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 598 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 599 connection = avdtp_get_connection_for_avdtp_cid(cid); 600 btstack_assert(connection != NULL); 601 602 // reset discovery timer while remote is active for current cid 603 if ((avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && (cid == sep_discovery_cid)){ 604 log_info("Reset discovery timer"); 605 a2dp_source_set_config_timer_start(sep_discovery_cid); 606 break; 607 } 608 609 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 610 611 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_state, cid); 612 613 switch (connection->a2dp_source_state){ 614 case A2DP_GET_CAPABILITIES: 615 remote_seid = sep_discovery_seps[sep_discovery_index].seid; 616 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 617 avdtp_source_get_all_capabilities(cid, remote_seid); 618 return; 619 620 case A2DP_SET_CONFIGURATION: 621 a2dp_source_set_config(connection); 622 return; 623 624 case A2DP_W2_OPEN_STREAM_WITH_SEID: 625 log_info("A2DP open stream ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), connection->a2dp_source_local_stream_endpoint->remote_sep.seid); 626 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 627 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), connection->a2dp_source_local_stream_endpoint->remote_sep.seid); 628 break; 629 630 case A2DP_W2_RECONFIGURE_WITH_SEID: 631 log_info("A2DP reconfigured ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), connection->a2dp_source_local_stream_endpoint->remote_sep.seid); 632 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), ERROR_CODE_SUCCESS); 633 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 634 break; 635 636 case A2DP_STREAMING_OPENED: 637 switch (signal_identifier){ 638 case AVDTP_SI_START: 639 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 640 break; 641 case AVDTP_SI_SUSPEND: 642 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 643 break; 644 case AVDTP_SI_ABORT: 645 case AVDTP_SI_CLOSE: 646 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 647 break; 648 default: 649 break; 650 } 651 break; 652 653 default: 654 break; 655 } 656 break; 657 658 case AVDTP_SUBEVENT_SIGNALING_REJECT: 659 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 660 connection = avdtp_get_connection_for_avdtp_cid(cid); 661 btstack_assert(connection != NULL); 662 663 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 664 665 connection->a2dp_source_state = A2DP_CONNECTED; 666 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 667 break; 668 669 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 670 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 671 connection = avdtp_get_connection_for_avdtp_cid(cid); 672 btstack_assert(connection != NULL); 673 674 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 675 676 connection->a2dp_source_state = A2DP_CONNECTED; 677 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 678 break; 679 680 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 681 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 682 connection = avdtp_get_connection_for_avdtp_cid(cid); 683 btstack_assert(connection != NULL); 684 685 connection->a2dp_source_state = A2DP_CONFIGURED; 686 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 687 break; 688 689 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 690 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 691 connection = avdtp_get_connection_for_avdtp_cid(cid); 692 btstack_assert(connection != NULL); 693 694 // connect/release are passed on to app 695 if (sep_discovery_cid == cid){ 696 a2dp_source_set_config_timer_stop(); 697 connection->a2dp_source_stream_endpoint_configured = false; 698 connection->a2dp_source_local_stream_endpoint = NULL; 699 700 connection->a2dp_source_state = A2DP_IDLE; 701 sep_discovery_cid = 0; 702 } 703 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 704 break; 705 706 default: 707 break; 708 } 709 } 710 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 711 btstack_assert(callback != NULL); 712 713 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 714 a2dp_source_packet_handler_user = callback; 715 } 716 717 void a2dp_source_init(void){ 718 avdtp_source_init(); 719 } 720 721 void a2dp_source_deinit(void){ 722 avdtp_source_deinit(); 723 sep_discovery_count = 0; 724 } 725 726 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 727 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 728 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 729 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 730 if (!stream_endpoint){ 731 return NULL; 732 } 733 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 734 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 735 codec_capabilities, codec_capabilities_len); 736 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 737 738 // store user codec configuration buffer 739 stream_endpoint->media_codec_type = media_codec_type; 740 stream_endpoint->media_codec_configuration_info = codec_configuration; 741 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 742 743 return stream_endpoint; 744 } 745 746 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 747 avdtp_source_finalize_stream_endpoint(stream_endpoint); 748 } 749 750 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 751 752 uint16_t outgoing_cid; 753 754 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 755 if (connection == NULL){ 756 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 757 if (status != ERROR_CODE_SUCCESS) { 758 // if there's already a connection for for remote addr, avdtp_source_connect fails, 759 // but the stream will get set-up nevertheless 760 return status; 761 } 762 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 763 btstack_assert(connection != NULL); 764 765 // setup state 766 connection->a2dp_source_outgoing_active = true; 767 connection->a2dp_source_state = A2DP_W4_CONNECTED; 768 *avdtp_cid = outgoing_cid; 769 770 } else { 771 if (connection->a2dp_source_outgoing_active || connection->a2dp_source_stream_endpoint_configured) { 772 return ERROR_CODE_COMMAND_DISALLOWED; 773 } 774 775 // check state 776 switch (connection->a2dp_source_state){ 777 case A2DP_IDLE: 778 case A2DP_CONNECTED: 779 // restart process e.g. if there no suitable stream endpoints or they had been in use 780 connection->a2dp_source_outgoing_active = true; 781 *avdtp_cid = connection->avdtp_cid; 782 a2dp_source_ready_for_sep_discovery(connection); 783 break; 784 default: 785 return ERROR_CODE_COMMAND_DISALLOWED; 786 } 787 } 788 return ERROR_CODE_SUCCESS; 789 } 790 791 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 792 return avdtp_disconnect(avdtp_cid); 793 } 794 795 796 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 797 return avdtp_start_stream(avdtp_cid, local_seid); 798 } 799 800 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 801 return avdtp_suspend_stream(avdtp_cid, local_seid); 802 } 803 804 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 805 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 806 } 807 808 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 809 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 810 } 811 812 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){ 813 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 814 } 815 816 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){ 817 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 818 } 819 820 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 821 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 822 } 823 824 static uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 825 avdtp_media_codec_type_t codec_type) { 826 827 // check state 828 switch (connection->a2dp_source_state){ 829 case A2DP_DISCOVERY_DONE: 830 case A2DP_GET_CAPABILITIES: 831 break; 832 default: 833 return ERROR_CODE_COMMAND_DISALLOWED; 834 } 835 836 // lookup local stream endpoint 837 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 838 if (stream_endpoint == NULL){ 839 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 840 } 841 842 // lookup remote stream endpoint 843 avdtp_sep_t * remote_sep = NULL; 844 uint8_t i; 845 for (i=0; i < sep_discovery_count; i++){ 846 if (sep_discovery_seps[i].seid == remote_seid){ 847 remote_sep = &sep_discovery_seps[i]; 848 } 849 } 850 if (remote_sep == NULL){ 851 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 852 } 853 854 // set media configuration 855 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 856 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 857 stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 858 // remote seid to use 859 stream_endpoint->set_config_remote_seid = remote_seid; 860 // enable delay reporting if supported 861 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 862 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 863 } 864 865 // suitable Sink stream endpoint found, configure it 866 connection->a2dp_source_local_stream_endpoint = stream_endpoint; 867 connection->a2dp_source_have_config = true; 868 869 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 870 // continue outgoing configuration 871 if (connection->a2dp_source_state == A2DP_DISCOVERY_DONE){ 872 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 873 } 874 #endif 875 876 return ERROR_CODE_SUCCESS; 877 } 878 879 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){ 880 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 881 if (connection == NULL){ 882 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 883 } 884 885 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 886 if (status != 0) { 887 return status; 888 } 889 // set config in reserved buffer 890 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 891 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 892 avdtp_config_sbc_store(connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 893 894 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 895 a2dp_source_set_config(connection); 896 #endif 897 898 return ERROR_CODE_SUCCESS; 899 } 900 901 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){ 902 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 903 if (connection == NULL){ 904 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 905 } 906 907 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 908 if (status != 0) { 909 return status; 910 } 911 912 // set config in reserved buffer 913 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *)connection->a2dp_source_local_stream_endpoint->media_codec_info; 914 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 915 avdtp_config_mpeg_audio_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 916 917 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 918 a2dp_source_set_config(connection); 919 #endif 920 921 return ERROR_CODE_SUCCESS; 922 } 923 924 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){ 925 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 926 if (connection == NULL){ 927 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 928 } 929 930 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 931 if (status != 0) { 932 return status; 933 } 934 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 935 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 936 avdtp_config_mpeg_aac_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 937 938 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 939 a2dp_source_set_config(connection); 940 #endif 941 942 return ERROR_CODE_SUCCESS; 943 } 944 945 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){ 946 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 947 if (connection == NULL){ 948 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 949 } 950 951 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 952 if (status != 0) { 953 return status; 954 } 955 956 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 957 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 958 avdtp_config_atrac_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 959 960 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 961 a2dp_source_set_config(connection); 962 #endif 963 964 return ERROR_CODE_SUCCESS; 965 } 966 967 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 968 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 969 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 970 if (connection == NULL){ 971 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 972 } 973 974 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 975 if (status != 0) { 976 return status; 977 } 978 979 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 980 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 981 982 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 983 a2dp_source_set_config(connection); 984 #endif 985 986 return status; 987 } 988 989 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 990 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 991 if (connection == NULL){ 992 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 993 } 994 995 if (connection->a2dp_source_state != A2DP_STREAMING_OPENED) { 996 return ERROR_CODE_COMMAND_DISALLOWED; 997 } 998 999 btstack_assert(connection->a2dp_source_local_stream_endpoint != NULL); 1000 1001 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 1002 1003 avdtp_media_codec_type_t codec_type = connection->a2dp_source_local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 1004 uint8_t codec_info_len; 1005 switch (codec_type){ 1006 case AVDTP_CODEC_SBC: 1007 codec_info_len = 4; 1008 (void)memcpy(connection->a2dp_source_local_stream_endpoint->media_codec_info, connection->a2dp_source_local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1009 avdtp_config_sbc_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1010 break; 1011 case AVDTP_CODEC_MPEG_1_2_AUDIO: 1012 codec_info_len = 4; 1013 (void)memcpy(connection->a2dp_source_local_stream_endpoint->media_codec_info, connection->a2dp_source_local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1014 avdtp_config_mpeg_audio_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1015 break; 1016 case AVDTP_CODEC_MPEG_2_4_AAC: 1017 codec_info_len = 6; 1018 (void)memcpy(connection->a2dp_source_local_stream_endpoint->media_codec_info, connection->a2dp_source_local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1019 avdtp_config_mpeg_aac_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1020 break; 1021 case AVDTP_CODEC_ATRAC_FAMILY: 1022 codec_info_len = 7; 1023 (void)memcpy(connection->a2dp_source_local_stream_endpoint->media_codec_info, connection->a2dp_source_local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1024 avdtp_config_atrac_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1025 break; 1026 default: 1027 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1028 } 1029 1030 avdtp_capabilities_t new_configuration; 1031 new_configuration.media_codec.media_type = AVDTP_AUDIO; 1032 new_configuration.media_codec.media_codec_type = codec_type; 1033 new_configuration.media_codec.media_codec_information_len = codec_info_len; 1034 new_configuration.media_codec.media_codec_information = connection->a2dp_source_local_stream_endpoint->media_codec_info; 1035 1036 // start reconfigure 1037 connection->a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 1038 1039 return avdtp_source_reconfigure( 1040 avdtp_cid, 1041 avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), 1042 connection->a2dp_source_local_stream_endpoint->remote_sep.seid, 1043 1 << AVDTP_MEDIA_CODEC, 1044 new_configuration 1045 ); 1046 } 1047