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 typedef struct { 70 avdtp_stream_endpoint_t * local_stream_endpoint; 71 uint8_t active_remote_sep_index; 72 } avdtp_stream_endpoint_context_t; 73 74 75 static const char * default_a2dp_source_service_name = "BTstack A2DP Source Service"; 76 static const char * default_a2dp_source_service_provider_name = "BTstack A2DP Source Service Provider"; 77 78 static btstack_timer_source_t a2dp_source_set_config_timer; 79 static btstack_packet_handler_t a2dp_source_packet_handler_user; 80 81 static uint16_t a2dp_source_cid; 82 83 // discover remote seps 84 static uint16_t num_remote_seps; 85 static avdtp_sep_t remote_seps[AVDTP_MAX_SEP_NUM]; 86 87 static avdtp_stream_endpoint_context_t sc; 88 89 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 90 static void a2dp_discover_seps_with_next_waiting_connection(void); 91 92 static bool stream_endpoint_configured; 93 static bool a2dp_source_stream_endpoint_configured(const avdtp_connection_t * connection){ 94 UNUSED(connection); 95 return stream_endpoint_configured; 96 } 97 98 static bool outgoing_active; 99 static bool a2dp_source_outgoing_active(const avdtp_connection_t * connection){ 100 UNUSED(connection); 101 return outgoing_active; 102 } 103 104 static void a2dp_source_streaming_emit_connection_failed(avdtp_connection_t *connection, uint8_t status) { 105 uint8_t event[14]; 106 int pos = 0; 107 event[pos++] = HCI_EVENT_A2DP_META; 108 event[pos++] = sizeof(event) - 2; 109 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 110 little_endian_store_16(event, pos, connection->avdtp_cid); 111 pos += 2; 112 reverse_bd_addr(connection->remote_addr, &event[pos]); 113 pos += 6; 114 event[pos++] = 0; 115 event[pos++] = 0; 116 event[pos++] = status; 117 118 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 119 } 120 121 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){ 122 uint8_t* attribute; 123 de_create_sequence(service); 124 125 // 0x0000 "Service Record Handle" 126 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 127 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 128 129 // 0x0001 "Service Class ID List" 130 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 131 attribute = de_push_sequence(service); 132 { 133 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); 134 } 135 de_pop_sequence(service, attribute); 136 137 // 0x0004 "Protocol Descriptor List" 138 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 139 attribute = de_push_sequence(service); 140 { 141 uint8_t* l2cpProtocol = de_push_sequence(attribute); 142 { 143 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 144 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 145 } 146 de_pop_sequence(attribute, l2cpProtocol); 147 148 uint8_t* avProtocol = de_push_sequence(attribute); 149 { 150 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 151 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 152 } 153 de_pop_sequence(attribute, avProtocol); 154 } 155 de_pop_sequence(service, attribute); 156 157 // 0x0005 "Public Browse Group" 158 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 159 attribute = de_push_sequence(service); 160 { 161 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 162 } 163 de_pop_sequence(service, attribute); 164 165 // 0x0009 "Bluetooth Profile Descriptor List" 166 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 167 attribute = de_push_sequence(service); 168 { 169 uint8_t *a2dProfile = de_push_sequence(attribute); 170 { 171 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 172 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 173 } 174 de_pop_sequence(attribute, a2dProfile); 175 } 176 de_pop_sequence(service, attribute); 177 178 179 // 0x0100 "Service Name" 180 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 181 if (service_name){ 182 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 183 } else { 184 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_name), (uint8_t *) default_a2dp_source_service_name); 185 } 186 187 // 0x0100 "Provider Name" 188 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 189 if (service_provider_name){ 190 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 191 } else { 192 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_provider_name), (uint8_t *) default_a2dp_source_service_provider_name); 193 } 194 195 // 0x0311 "Supported Features" 196 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 197 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 198 } 199 200 static void a2dp_signaling_emit_reconfigured(uint16_t cid, uint8_t local_seid, uint8_t status){ 201 uint8_t event[7]; 202 int pos = 0; 203 event[pos++] = HCI_EVENT_A2DP_META; 204 event[pos++] = sizeof(event) - 2; 205 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 206 little_endian_store_16(event, pos, cid); 207 pos += 2; 208 event[pos++] = local_seid; 209 event[pos++] = status; 210 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 211 } 212 213 static void a2dp_source_discover_stream_endpoints(uint16_t avdtp_cid){ 214 a2dp_source_cid = avdtp_cid; 215 avdtp_source_discover_stream_endpoints(avdtp_cid); 216 } 217 218 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 219 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 220 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 221 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 222 223 if (a2dp_source_stream_endpoint_configured(connection)) return; 224 225 if (connection == NULL) { 226 log_info("a2dp_discover_seps_with_next_waiting_connection"); 227 a2dp_discover_seps_with_next_waiting_connection(); 228 return; 229 } 230 231 a2dp_source_discover_stream_endpoints(avdtp_cid); 232 } 233 234 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 235 log_info("a2dp_source_set_config_timer_start cid 0%02x", avdtp_cid); 236 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 237 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 238 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 239 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 240 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 241 } 242 243 static void a2dp_source_set_config_timer_stop(void){ 244 log_info("a2dp_source_set_config_timer_stop"); 245 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 246 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 247 } 248 249 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 250 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 251 sc.active_remote_sep_index = 0; 252 num_remote_seps = 0; 253 memset(remote_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 254 connection->a2dp_source_discover_seps = false; 255 256 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 257 if (a2dp_source_outgoing_active(connection) && (a2dp_source_cid == connection->avdtp_cid)){ 258 log_info("discover seps"); 259 a2dp_source_discover_stream_endpoints(connection->avdtp_cid); 260 } else { 261 log_info("wait a bit, then discover seps"); 262 a2dp_source_set_config_timer_start(connection->avdtp_cid); 263 } 264 } 265 266 static void a2dp_discover_seps_with_next_waiting_connection(void){ 267 btstack_linked_list_iterator_t it; 268 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 269 while (btstack_linked_list_iterator_has_next(&it)){ 270 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 271 if (!next_connection->a2dp_source_discover_seps) continue; 272 a2dp_start_discovering_seps(next_connection); 273 } 274 } 275 276 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 277 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 278 avdtp_connection_t * avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); 279 btstack_assert(avdtp_connection != NULL); 280 if ((a2dp_source_cid == cid) && (avdtp_connection->a2dp_source_state == A2DP_W4_SET_CONFIGURATION)){ 281 // outgoing: discovery and config of remote sink sep successful, trigger stream open 282 avdtp_connection->a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 283 } else { 284 // incoming: accept cid, lookup local stream endpoint and wait for stream open 285 a2dp_source_cid = cid; 286 sc.local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 287 btstack_assert(sc.local_stream_endpoint != NULL); 288 avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 289 } 290 291 // config set: stop timer 292 a2dp_source_set_config_timer_stop(); 293 stream_endpoint_configured = true; 294 } 295 296 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 297 UNUSED(channel); 298 UNUSED(size); 299 300 uint16_t cid; 301 avdtp_connection_t * connection; 302 303 uint8_t signal_identifier; 304 uint8_t status; 305 uint8_t local_seid; 306 uint8_t remote_seid; 307 308 if (packet_type != HCI_EVENT_PACKET) return; 309 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 310 311 switch (packet[2]){ 312 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 313 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 314 connection = avdtp_get_connection_for_avdtp_cid(cid); 315 btstack_assert(connection != NULL); 316 317 status = avdtp_subevent_signaling_connection_established_get_status(packet); 318 if (status != ERROR_CODE_SUCCESS){ 319 // notify about connection error only if we're initiator 320 if (a2dp_source_outgoing_active(connection) && (a2dp_source_cid == cid)){ 321 log_info("A2DP source signaling connection failed status 0x%02x", status); 322 outgoing_active = false; 323 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 324 } 325 break; 326 } 327 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 328 329 // notify app 330 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 331 332 // we already have a valid setup 333 if (a2dp_source_stream_endpoint_configured(connection)) return; 334 335 // start discover seps now if: 336 // - outgoing active: signaling for outgoing connection 337 // - outgoing not active: incoming connection and no sep discover ongoing 338 339 log_info("outgoing_active %d, current avdtp cid 0x%02x, a2dp_source_state %d", a2dp_source_outgoing_active(connection), cid, connection->a2dp_source_state); 340 if ((a2dp_source_outgoing_active(connection) && (a2dp_source_cid == cid)) || (!a2dp_source_outgoing_active(connection) && (connection->a2dp_source_state == A2DP_IDLE))){ 341 a2dp_start_discovering_seps(connection); 342 } else { 343 // post-pone sep discovery 344 connection->a2dp_source_discover_seps = true; 345 } 346 break; 347 348 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 349 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 350 connection = avdtp_get_connection_for_avdtp_cid(cid); 351 btstack_assert(connection != NULL); 352 353 if (connection->a2dp_source_state == A2DP_DISCOVER_SEPS) { 354 avdtp_sep_t sep; 355 memset(&sep, 0, sizeof(avdtp_sep_t)); 356 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 357 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 358 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 359 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 360 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 361 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 362 num_remote_seps); 363 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 364 remote_seps[num_remote_seps++] = sep; 365 } 366 } 367 break; 368 369 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 370 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 371 connection = avdtp_get_connection_for_avdtp_cid(cid); 372 btstack_assert(connection != NULL); 373 374 if (connection->a2dp_source_state != A2DP_DISCOVER_SEPS) break; 375 376 if (num_remote_seps > 0){ 377 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 378 sc.active_remote_sep_index = 0; 379 connection->a2dp_source_have_config = false; 380 } else { 381 if (a2dp_source_outgoing_active(connection)){ 382 outgoing_active = false; 383 connection = avdtp_get_connection_for_avdtp_cid(cid); 384 btstack_assert(connection != NULL); 385 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 386 } 387 388 // continue 389 connection->a2dp_source_state = A2DP_CONNECTED; 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 // select SEP if none configured yet 405 if (connection->a2dp_source_have_config == false){ 406 // find SBC stream endpoint 407 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 408 if (stream_endpoint != NULL){ 409 // choose SBC config params 410 avdtp_configuration_sbc_t configuration; 411 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 412 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 413 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 414 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 415 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 416 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 417 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 418 419 // and pre-select this endpoint 420 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 421 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 422 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 423 } 424 } 425 break; 426 427 // forward codec capability 428 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 429 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 430 connection = avdtp_get_connection_for_avdtp_cid(cid); 431 btstack_assert(connection != NULL); 432 433 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 434 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 435 break; 436 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 437 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 438 connection = avdtp_get_connection_for_avdtp_cid(cid); 439 btstack_assert(connection != NULL); 440 441 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 442 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 443 break; 444 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 445 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 446 connection = avdtp_get_connection_for_avdtp_cid(cid); 447 btstack_assert(connection != NULL); 448 449 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 450 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 451 break; 452 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 453 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 454 connection = avdtp_get_connection_for_avdtp_cid(cid); 455 btstack_assert(connection != NULL); 456 457 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 458 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 459 break; 460 461 // not forwarded 462 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 463 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 464 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 465 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 466 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 467 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 468 break; 469 470 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 471 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 472 connection = avdtp_get_connection_for_avdtp_cid(cid); 473 btstack_assert(connection != NULL); 474 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_state); 475 476 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 477 478 // store delay reporting capability 479 remote_seps[sc.active_remote_sep_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 480 481 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 482 break; 483 484 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 485 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 486 connection = avdtp_get_connection_for_avdtp_cid(cid); 487 btstack_assert(connection != NULL); 488 489 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 490 491 // forward capabilities done for endpoint 492 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 493 494 // endpoint was not suitable, check next one 495 sc.active_remote_sep_index++; 496 if (sc.active_remote_sep_index >= num_remote_seps){ 497 498 // emit 'all capabilities for all seps reported' 499 uint8_t event[6]; 500 uint8_t pos = 0; 501 event[pos++] = HCI_EVENT_A2DP_META; 502 event[pos++] = sizeof(event) - 2; 503 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 504 little_endian_store_16(event, pos, cid); 505 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 506 507 // do we have a valid config? 508 if (connection->a2dp_source_have_config){ 509 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 510 connection->a2dp_source_have_config = false; 511 break; 512 } 513 514 // we didn't find a suitable SBC stream endpoint, sorry. 515 if (a2dp_source_outgoing_active(connection)){ 516 outgoing_active = false; 517 connection = avdtp_get_connection_for_avdtp_cid(cid); 518 btstack_assert(connection != NULL); 519 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 520 } 521 connection->a2dp_source_state = A2DP_CONNECTED; 522 a2dp_discover_seps_with_next_waiting_connection(); 523 } 524 break; 525 526 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 527 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 528 connection = avdtp_get_connection_for_avdtp_cid(cid); 529 btstack_assert(connection != NULL); 530 531 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 532 break; 533 534 // forward codec configuration 535 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 536 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 537 a2dp_handle_received_configuration(packet, local_seid); 538 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 539 break; 540 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 541 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 542 a2dp_handle_received_configuration(packet, local_seid); 543 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 544 break; 545 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 546 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_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_MPEG_AAC_CONFIGURATION); 549 break; 550 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 551 local_seid = avdtp_subevent_signaling_media_codec_atrac_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_ATRAC_CONFIGURATION); 554 break; 555 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 556 local_seid = avdtp_subevent_signaling_media_codec_sbc_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_OTHER_CONFIGURATION); 559 break; 560 561 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 562 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 563 break; 564 565 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 566 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 567 connection = avdtp_get_connection_for_avdtp_cid(cid); 568 btstack_assert(connection != NULL); 569 570 if (connection->a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 571 572 outgoing_active = false; 573 status = avdtp_subevent_streaming_connection_established_get_status(packet); 574 if (status != ERROR_CODE_SUCCESS){ 575 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 576 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 577 break; 578 } 579 580 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 581 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 582 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 583 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 584 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 585 break; 586 587 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 588 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 589 connection = avdtp_get_connection_for_avdtp_cid(cid); 590 btstack_assert(connection != NULL); 591 592 // reset discovery timer while remote is active 593 if (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) { 594 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(&a2dp_source_set_config_timer); 595 if ((avdtp_cid == 0) || (avdtp_cid != cid)) break; 596 log_info("Reset discovery timer"); 597 a2dp_source_set_config_timer_start(avdtp_cid); 598 break; 599 } 600 601 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 602 603 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_state, cid); 604 605 switch (connection->a2dp_source_state){ 606 case A2DP_GET_CAPABILITIES: 607 remote_seid = remote_seps[sc.active_remote_sep_index].seid; 608 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 609 avdtp_source_get_all_capabilities(cid, remote_seid); 610 return; 611 612 case A2DP_SET_CONFIGURATION: 613 remote_seid = sc.local_stream_endpoint->set_config_remote_seid; 614 log_info("A2DP initiate set configuration locally and wait for response ... local seid 0x%02x, remote seid 0x%02x", avdtp_stream_endpoint_seid(sc.local_stream_endpoint), remote_seid); 615 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 616 avdtp_source_set_configuration(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), remote_seid, sc.local_stream_endpoint->remote_configuration_bitmap, sc.local_stream_endpoint->remote_configuration); 617 return; 618 619 case A2DP_W2_OPEN_STREAM_WITH_SEID: 620 log_info("A2DP open stream ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.local_stream_endpoint->remote_sep.seid); 621 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 622 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.local_stream_endpoint->remote_sep.seid); 623 break; 624 625 case A2DP_W2_RECONFIGURE_WITH_SEID: 626 log_info("A2DP reconfigured ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.local_stream_endpoint->remote_sep.seid); 627 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), ERROR_CODE_SUCCESS); 628 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 629 break; 630 631 case A2DP_STREAMING_OPENED: 632 switch (signal_identifier){ 633 case AVDTP_SI_START: 634 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 635 break; 636 case AVDTP_SI_SUSPEND: 637 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 638 break; 639 case AVDTP_SI_ABORT: 640 case AVDTP_SI_CLOSE: 641 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 642 break; 643 default: 644 break; 645 } 646 break; 647 648 default: 649 break; 650 } 651 break; 652 653 case AVDTP_SUBEVENT_SIGNALING_REJECT: 654 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 655 connection = avdtp_get_connection_for_avdtp_cid(cid); 656 btstack_assert(connection != NULL); 657 658 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 659 660 connection->a2dp_source_state = A2DP_CONNECTED; 661 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 662 break; 663 664 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 665 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 666 connection = avdtp_get_connection_for_avdtp_cid(cid); 667 btstack_assert(connection != NULL); 668 669 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 670 671 connection->a2dp_source_state = A2DP_CONNECTED; 672 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 673 break; 674 675 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 676 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 677 connection = avdtp_get_connection_for_avdtp_cid(cid); 678 btstack_assert(connection != NULL); 679 680 connection->a2dp_source_state = A2DP_CONFIGURED; 681 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 682 break; 683 684 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 685 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 686 connection = avdtp_get_connection_for_avdtp_cid(cid); 687 btstack_assert(connection != NULL); 688 689 // connect/release are passed on to app 690 if (a2dp_source_cid == cid){ 691 stream_endpoint_configured = false; 692 sc.local_stream_endpoint = NULL; 693 694 connection->a2dp_source_state = A2DP_IDLE; 695 a2dp_source_cid = 0; 696 } 697 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 698 break; 699 700 default: 701 break; 702 } 703 } 704 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 705 btstack_assert(callback != NULL); 706 707 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 708 a2dp_source_packet_handler_user = callback; 709 } 710 711 void a2dp_source_init(void){ 712 (void) memset(&sc, 0, sizeof(avdtp_stream_endpoint_context_t)); 713 714 avdtp_source_init(); 715 } 716 717 void a2dp_source_deinit(void){ 718 avdtp_source_deinit(); 719 720 outgoing_active = false; 721 stream_endpoint_configured = false; 722 a2dp_source_cid = 0; 723 num_remote_seps = 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 outgoing_active = true; 763 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 764 btstack_assert(connection != NULL); 765 766 // setup state 767 connection->a2dp_source_state = A2DP_W4_CONNECTED; 768 a2dp_source_cid = outgoing_cid; 769 *avdtp_cid = outgoing_cid; 770 771 } else { 772 if (a2dp_source_outgoing_active(connection) || a2dp_source_stream_endpoint_configured(connection)) { 773 return ERROR_CODE_COMMAND_DISALLOWED; 774 } 775 776 // check state 777 switch (connection->a2dp_source_state){ 778 case A2DP_IDLE: 779 case A2DP_CONNECTED: 780 // restart process e.g. if there no suitable stream endpoints or they had been in use 781 outgoing_active = true; 782 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 783 *avdtp_cid = connection->avdtp_cid; 784 a2dp_start_discovering_seps(connection); 785 break; 786 default: 787 return ERROR_CODE_COMMAND_DISALLOWED; 788 } 789 } 790 return ERROR_CODE_SUCCESS; 791 } 792 793 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 794 return avdtp_disconnect(avdtp_cid); 795 } 796 797 798 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 799 return avdtp_start_stream(avdtp_cid, local_seid); 800 } 801 802 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 803 return avdtp_suspend_stream(avdtp_cid, local_seid); 804 } 805 806 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 807 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 808 } 809 810 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 811 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 812 } 813 814 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){ 815 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 816 } 817 818 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){ 819 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 820 } 821 822 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 823 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 824 } 825 826 static uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 827 avdtp_media_codec_type_t codec_type) { 828 829 // lookup local stream endpoint 830 avdtp_stream_endpoint_t * local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 831 if (local_stream_endpoint == NULL){ 832 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 833 } 834 835 // lookup remote stream endpoint 836 avdtp_sep_t * remote_sep = NULL; 837 uint8_t i; 838 for (i=0;i<num_remote_seps;i++){ 839 if (remote_seps[i].seid == remote_seid){ 840 remote_sep = &remote_seps[i]; 841 } 842 } 843 if (remote_sep == NULL){ 844 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 845 } 846 847 // set media configuration 848 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 849 local_stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 850 local_stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 851 // remote seid to use 852 local_stream_endpoint->set_config_remote_seid = remote_seid; 853 // enable delay reporting if supported 854 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 855 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 856 } 857 858 // suitable Sink stream endpoint found, configure it 859 sc.local_stream_endpoint = local_stream_endpoint; 860 connection->a2dp_source_have_config = true; 861 862 return ERROR_CODE_SUCCESS; 863 } 864 865 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){ 866 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 867 if (connection == NULL){ 868 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 869 } 870 871 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 872 if (status != 0) { 873 return status; 874 } 875 // set config in reserved buffer 876 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 877 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 878 avdtp_config_sbc_store( sc.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_audio(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_mpeg_audio_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_1_2_AUDIO); 890 if (status != 0) { 891 return status; 892 } 893 894 // set config in reserved buffer 895 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 896 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 897 avdtp_config_mpeg_audio_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 898 899 return ERROR_CODE_SUCCESS; 900 } 901 902 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){ 903 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 904 if (connection == NULL){ 905 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 906 } 907 908 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 909 if (status != 0) { 910 return status; 911 } 912 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 913 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 914 avdtp_config_mpeg_aac_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 915 916 return ERROR_CODE_SUCCESS; 917 } 918 919 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){ 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_ATRAC_FAMILY); 926 if (status != 0) { 927 return status; 928 } 929 930 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 931 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 932 avdtp_config_atrac_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 933 934 return ERROR_CODE_SUCCESS; 935 } 936 937 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 938 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 939 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 940 if (connection == NULL){ 941 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 942 } 943 944 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 945 if (status != 0) { 946 return status; 947 } 948 949 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 950 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 951 952 return status; 953 } 954 955 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 956 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 957 if (connection == NULL){ 958 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 959 } 960 961 if (connection->a2dp_source_state != A2DP_STREAMING_OPENED) { 962 return ERROR_CODE_COMMAND_DISALLOWED; 963 } 964 965 btstack_assert(sc.local_stream_endpoint != NULL); 966 967 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 968 969 avdtp_media_codec_type_t codec_type = sc.local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 970 uint8_t codec_info_len; 971 switch (codec_type){ 972 case AVDTP_CODEC_SBC: 973 codec_info_len = 4; 974 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 975 avdtp_config_sbc_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 976 break; 977 case AVDTP_CODEC_MPEG_1_2_AUDIO: 978 codec_info_len = 4; 979 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 980 avdtp_config_mpeg_audio_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 981 break; 982 case AVDTP_CODEC_MPEG_2_4_AAC: 983 codec_info_len = 6; 984 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 985 avdtp_config_mpeg_aac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 986 break; 987 case AVDTP_CODEC_ATRAC_FAMILY: 988 codec_info_len = 7; 989 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 990 avdtp_config_atrac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 991 break; 992 default: 993 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 994 } 995 996 avdtp_capabilities_t new_configuration; 997 new_configuration.media_codec.media_type = AVDTP_AUDIO; 998 new_configuration.media_codec.media_codec_type = codec_type; 999 new_configuration.media_codec.media_codec_information_len = codec_info_len; 1000 new_configuration.media_codec.media_codec_information = sc.local_stream_endpoint->media_codec_info; 1001 1002 // start reconfigure 1003 connection->a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 1004 1005 return avdtp_source_reconfigure( 1006 avdtp_cid, 1007 avdtp_stream_endpoint_seid(sc.local_stream_endpoint), 1008 sc.local_stream_endpoint->remote_sep.seid, 1009 1 << AVDTP_MEDIA_CODEC, 1010 new_configuration 1011 ); 1012 } 1013