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