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 80 static bool outgoing_active; 81 82 // discover remote seps 83 static a2dp_state_t a2dp_source_state; 84 static uint16_t a2dp_source_cid; 85 static uint16_t num_remote_seps; 86 static avdtp_sep_t remote_seps[AVDTP_MAX_SEP_NUM]; 87 88 static bool a2dp_source_have_config; 89 90 static bool stream_endpoint_configured; 91 92 static avdtp_stream_endpoint_context_t sc; 93 static btstack_packet_handler_t a2dp_source_packet_handler_user; 94 95 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 96 static void a2dp_discover_seps_with_next_waiting_connection(void); 97 98 static void a2dp_source_streaming_emit_connection_failed(avdtp_connection_t *connection, uint8_t status) { 99 uint8_t event[14]; 100 int pos = 0; 101 event[pos++] = HCI_EVENT_A2DP_META; 102 event[pos++] = sizeof(event) - 2; 103 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 104 little_endian_store_16(event, pos, connection->avdtp_cid); 105 pos += 2; 106 reverse_bd_addr(connection->remote_addr, &event[pos]); 107 pos += 6; 108 event[pos++] = 0; 109 event[pos++] = 0; 110 event[pos++] = status; 111 112 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 113 } 114 115 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){ 116 uint8_t* attribute; 117 de_create_sequence(service); 118 119 // 0x0000 "Service Record Handle" 120 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 121 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 122 123 // 0x0001 "Service Class ID List" 124 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 125 attribute = de_push_sequence(service); 126 { 127 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); 128 } 129 de_pop_sequence(service, attribute); 130 131 // 0x0004 "Protocol Descriptor List" 132 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 133 attribute = de_push_sequence(service); 134 { 135 uint8_t* l2cpProtocol = de_push_sequence(attribute); 136 { 137 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 138 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 139 } 140 de_pop_sequence(attribute, l2cpProtocol); 141 142 uint8_t* avProtocol = de_push_sequence(attribute); 143 { 144 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 145 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 146 } 147 de_pop_sequence(attribute, avProtocol); 148 } 149 de_pop_sequence(service, attribute); 150 151 // 0x0005 "Public Browse Group" 152 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 153 attribute = de_push_sequence(service); 154 { 155 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 156 } 157 de_pop_sequence(service, attribute); 158 159 // 0x0009 "Bluetooth Profile Descriptor List" 160 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 161 attribute = de_push_sequence(service); 162 { 163 uint8_t *a2dProfile = de_push_sequence(attribute); 164 { 165 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 166 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 167 } 168 de_pop_sequence(attribute, a2dProfile); 169 } 170 de_pop_sequence(service, attribute); 171 172 173 // 0x0100 "Service Name" 174 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 175 if (service_name){ 176 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 177 } else { 178 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_name), (uint8_t *) default_a2dp_source_service_name); 179 } 180 181 // 0x0100 "Provider Name" 182 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 183 if (service_provider_name){ 184 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 185 } else { 186 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_provider_name), (uint8_t *) default_a2dp_source_service_provider_name); 187 } 188 189 // 0x0311 "Supported Features" 190 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 191 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 192 } 193 194 static void a2dp_signaling_emit_reconfigured(uint16_t cid, uint8_t local_seid, uint8_t status){ 195 uint8_t event[7]; 196 int pos = 0; 197 event[pos++] = HCI_EVENT_A2DP_META; 198 event[pos++] = sizeof(event) - 2; 199 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 200 little_endian_store_16(event, pos, cid); 201 pos += 2; 202 event[pos++] = local_seid; 203 event[pos++] = status; 204 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 205 } 206 207 static void a2dp_source_discover_stream_endpoints(uint16_t avdtp_cid){ 208 a2dp_source_cid = avdtp_cid; 209 avdtp_source_discover_stream_endpoints(avdtp_cid); 210 } 211 212 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 213 if (stream_endpoint_configured) return; 214 215 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 216 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 217 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 218 219 if (connection == NULL) { 220 log_info("a2dp_discover_seps_with_next_waiting_connection"); 221 a2dp_discover_seps_with_next_waiting_connection(); 222 return; 223 } 224 225 a2dp_source_discover_stream_endpoints(avdtp_cid); 226 } 227 228 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 229 log_info("a2dp_source_set_config_timer_start cid 0%02x", avdtp_cid); 230 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 231 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 232 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 233 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 234 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 235 } 236 237 static void a2dp_source_set_config_timer_stop(void){ 238 log_info("a2dp_source_set_config_timer_stop"); 239 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 240 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 241 } 242 243 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 244 a2dp_source_state = A2DP_DISCOVER_SEPS; 245 sc.active_remote_sep_index = 0; 246 num_remote_seps = 0; 247 memset(remote_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 248 connection->a2dp_source_discover_seps = false; 249 250 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 251 if (outgoing_active && (a2dp_source_cid == connection->avdtp_cid)){ 252 log_info("discover seps"); 253 a2dp_source_discover_stream_endpoints(connection->avdtp_cid); 254 } else { 255 log_info("wait a bit, then discover seps"); 256 a2dp_source_set_config_timer_start(connection->avdtp_cid); 257 } 258 } 259 260 static void a2dp_discover_seps_with_next_waiting_connection(void){ 261 a2dp_source_state = A2DP_IDLE; 262 263 btstack_linked_list_iterator_t it; 264 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 265 while (btstack_linked_list_iterator_has_next(&it)){ 266 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 267 if (!next_connection->a2dp_source_discover_seps) continue; 268 a2dp_start_discovering_seps(next_connection); 269 } 270 } 271 272 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 273 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 274 if ((a2dp_source_cid == cid) && (a2dp_source_state == A2DP_W4_SET_CONFIGURATION)){ 275 // outgoing: discovery and config of remote sink sep successful, trigger stream open 276 a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 277 } else { 278 // incoming: accept cid, lookup local stream endpoint and wait for stream open 279 a2dp_source_cid = cid; 280 sc.local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 281 btstack_assert(sc.local_stream_endpoint != NULL); 282 a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 283 } 284 285 // config set: stop timer 286 a2dp_source_set_config_timer_stop(); 287 stream_endpoint_configured = true; 288 } 289 290 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 291 UNUSED(channel); 292 UNUSED(size); 293 294 uint16_t cid; 295 avdtp_connection_t * connection; 296 297 uint8_t signal_identifier; 298 uint8_t status; 299 uint8_t local_seid; 300 uint8_t remote_seid; 301 302 if (packet_type != HCI_EVENT_PACKET) return; 303 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 304 305 switch (packet[2]){ 306 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 307 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 308 connection = avdtp_get_connection_for_avdtp_cid(cid); 309 btstack_assert(connection != NULL); 310 311 status = avdtp_subevent_signaling_connection_established_get_status(packet); 312 if (status != ERROR_CODE_SUCCESS){ 313 // notify about connection error only if we're initiator 314 if (outgoing_active && (a2dp_source_cid == cid)){ 315 log_info("A2DP source signaling connection failed status 0x%02x", status); 316 outgoing_active = false; 317 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 318 } 319 break; 320 } 321 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 322 323 // notify app 324 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 325 326 // we already have a valid setup 327 if (stream_endpoint_configured) return; 328 329 // start discover seps now if: 330 // - outgoing active: signaling for outgoing connection 331 // - outgoing not active: incoming connection and no sep discover ongoing 332 333 log_info("outgoing_active %d, current avdtp cid 0x%02x, a2dp_source_state %d", outgoing_active, cid, a2dp_source_state); 334 if ((outgoing_active && (a2dp_source_cid == cid)) || (!outgoing_active && (a2dp_source_state == A2DP_IDLE))){ 335 a2dp_start_discovering_seps(connection); 336 } else { 337 // post-pone sep discovery 338 connection->a2dp_source_discover_seps = true; 339 } 340 break; 341 342 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 343 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 344 if (a2dp_source_cid != cid) break; 345 if (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) { 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 if (a2dp_source_cid != cid) break; 364 if (a2dp_source_state != A2DP_DISCOVER_SEPS) break; 365 366 connection = avdtp_get_connection_for_avdtp_cid(cid); 367 btstack_assert(connection != NULL); 368 369 if (num_remote_seps > 0){ 370 a2dp_source_state = A2DP_GET_CAPABILITIES; 371 sc.active_remote_sep_index = 0; 372 a2dp_source_have_config = false; 373 } else { 374 if (outgoing_active){ 375 outgoing_active = false; 376 connection = avdtp_get_connection_for_avdtp_cid(cid); 377 btstack_assert(connection != NULL); 378 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 379 } 380 381 // continue 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 if (a2dp_source_cid != cid) break; 389 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 390 391 // forward codec capability 392 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 393 394 // select SEP if none configured yet 395 if (a2dp_source_have_config == false){ 396 // find SBC stream endpoint 397 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 398 if (stream_endpoint != NULL){ 399 // choose SBC config params 400 avdtp_configuration_sbc_t configuration; 401 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 402 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 403 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 404 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 405 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 406 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 407 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 408 409 // and pre-select this endpoint 410 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 411 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 412 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 413 } 414 } 415 break; 416 417 // forward codec capability 418 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 419 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 420 if (a2dp_source_cid != cid) break; 421 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 422 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 423 break; 424 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 425 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 426 if (a2dp_source_cid != cid) break; 427 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 428 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 429 break; 430 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 431 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 432 if (a2dp_source_cid != cid) break; 433 if (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_ATRAC_CAPABILITY); 435 break; 436 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 437 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 438 if (a2dp_source_cid != cid) break; 439 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 440 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 441 break; 442 443 // not forwarded 444 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 445 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 446 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 447 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 448 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 449 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 450 break; 451 452 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 453 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 454 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, a2dp_source_state); 455 456 if (a2dp_source_cid != cid) break; 457 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 458 459 // store delay reporting capability 460 remote_seps[sc.active_remote_sep_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 461 462 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 463 break; 464 465 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 466 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 467 if (a2dp_source_cid != cid) break; 468 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 469 470 // forward capabilities done for endpoint 471 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 472 473 // endpoint was not suitable, check next one 474 sc.active_remote_sep_index++; 475 if (sc.active_remote_sep_index >= num_remote_seps){ 476 477 // emit 'all capabilities for all seps reported' 478 uint8_t event[6]; 479 uint8_t pos = 0; 480 event[pos++] = HCI_EVENT_A2DP_META; 481 event[pos++] = sizeof(event) - 2; 482 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 483 little_endian_store_16(event, pos, cid); 484 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 485 486 // do we have a valid config? 487 if (a2dp_source_have_config){ 488 a2dp_source_state = A2DP_SET_CONFIGURATION; 489 a2dp_source_have_config = false; 490 break; 491 } 492 493 // we didn't find a suitable SBC stream endpoint, sorry. 494 if (outgoing_active){ 495 outgoing_active = false; 496 connection = avdtp_get_connection_for_avdtp_cid(cid); 497 btstack_assert(connection != NULL); 498 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 499 } 500 a2dp_discover_seps_with_next_waiting_connection(); 501 } 502 break; 503 504 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 505 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 506 if (a2dp_source_cid != cid) break; 507 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 508 break; 509 510 // forward codec configuration 511 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 512 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 513 a2dp_handle_received_configuration(packet, local_seid); 514 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 515 break; 516 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 517 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 518 a2dp_handle_received_configuration(packet, local_seid); 519 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 520 break; 521 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 522 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 523 a2dp_handle_received_configuration(packet, local_seid); 524 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 525 break; 526 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 527 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 528 a2dp_handle_received_configuration(packet, local_seid); 529 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 530 break; 531 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 532 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 533 a2dp_handle_received_configuration(packet, local_seid); 534 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 535 break; 536 537 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 538 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 539 break; 540 541 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 542 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 543 if (a2dp_source_cid != cid) break; 544 if (a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 545 546 outgoing_active = false; 547 status = avdtp_subevent_streaming_connection_established_get_status(packet); 548 if (status != ERROR_CODE_SUCCESS){ 549 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 550 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 551 break; 552 } 553 554 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 555 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 556 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 557 a2dp_source_state = A2DP_STREAMING_OPENED; 558 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 559 break; 560 561 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 562 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 563 564 // reset discovery timer while remote is active 565 if (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) { 566 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(&a2dp_source_set_config_timer); 567 if ((avdtp_cid == 0) || (avdtp_cid != cid)) break; 568 log_info("Reset discovery timer"); 569 a2dp_source_set_config_timer_start(avdtp_cid); 570 break; 571 } 572 573 if (a2dp_source_cid != cid) break; 574 575 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 576 577 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), a2dp_source_state, cid); 578 579 switch (a2dp_source_state){ 580 case A2DP_GET_CAPABILITIES: 581 remote_seid = remote_seps[sc.active_remote_sep_index].seid; 582 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 583 avdtp_source_get_all_capabilities(cid, remote_seid); 584 return; 585 586 case A2DP_SET_CONFIGURATION: 587 remote_seid = sc.local_stream_endpoint->set_config_remote_seid; 588 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); 589 a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 590 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); 591 return; 592 593 case A2DP_W2_OPEN_STREAM_WITH_SEID: 594 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); 595 a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 596 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.local_stream_endpoint->remote_sep.seid); 597 break; 598 599 case A2DP_W2_RECONFIGURE_WITH_SEID: 600 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); 601 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), ERROR_CODE_SUCCESS); 602 a2dp_source_state = A2DP_STREAMING_OPENED; 603 break; 604 605 case A2DP_STREAMING_OPENED: 606 switch (signal_identifier){ 607 case AVDTP_SI_START: 608 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 609 break; 610 case AVDTP_SI_SUSPEND: 611 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 612 break; 613 case AVDTP_SI_ABORT: 614 case AVDTP_SI_CLOSE: 615 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 616 break; 617 default: 618 break; 619 } 620 break; 621 622 default: 623 break; 624 } 625 break; 626 627 case AVDTP_SUBEVENT_SIGNALING_REJECT: 628 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 629 if (a2dp_source_cid != cid) break; 630 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 631 632 a2dp_source_state = A2DP_CONNECTED; 633 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 634 break; 635 636 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 637 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 638 if (a2dp_source_cid != cid) break; 639 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 640 641 a2dp_source_state = A2DP_CONNECTED; 642 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 643 break; 644 645 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 646 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 647 if (a2dp_source_cid != cid) break; 648 649 a2dp_source_state = A2DP_CONFIGURED; 650 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 651 break; 652 653 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 654 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 655 // connect/release are passed on to app 656 if (a2dp_source_cid == cid){ 657 stream_endpoint_configured = false; 658 sc.local_stream_endpoint = NULL; 659 a2dp_source_state = A2DP_IDLE; 660 a2dp_source_cid = 0; 661 } 662 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 663 break; 664 665 default: 666 break; 667 } 668 } 669 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 670 btstack_assert(callback != NULL); 671 672 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 673 a2dp_source_packet_handler_user = callback; 674 } 675 676 void a2dp_source_init(void){ 677 a2dp_source_state = A2DP_IDLE; 678 (void) memset(&sc, 0, sizeof(avdtp_stream_endpoint_context_t)); 679 680 avdtp_source_init(); 681 } 682 683 void a2dp_source_deinit(void){ 684 avdtp_source_deinit(); 685 686 outgoing_active = false; 687 stream_endpoint_configured = false; 688 a2dp_source_cid = 0; 689 num_remote_seps = 0; 690 } 691 692 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 693 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 694 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 695 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 696 if (!stream_endpoint){ 697 return NULL; 698 } 699 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 700 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 701 codec_capabilities, codec_capabilities_len); 702 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 703 704 // store user codec configuration buffer 705 stream_endpoint->media_codec_type = media_codec_type; 706 stream_endpoint->media_codec_configuration_info = codec_configuration; 707 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 708 709 return stream_endpoint; 710 } 711 712 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 713 avdtp_source_finalize_stream_endpoint(stream_endpoint); 714 } 715 716 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 717 if (outgoing_active || stream_endpoint_configured) { 718 return ERROR_CODE_COMMAND_DISALLOWED; 719 } 720 721 uint16_t outgoing_cid; 722 723 outgoing_active = true; 724 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 725 if (status != ERROR_CODE_SUCCESS) { 726 // if there's already a connection for for remote addr, avdtp_source_connect fails, 727 // but the stream will get set-up nevertheless 728 outgoing_active = false; 729 return status; 730 } 731 732 // stop sep discovery for other 733 if (a2dp_source_state != A2DP_IDLE){ 734 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_source_cid); 735 if (connection != NULL){ 736 // sdp discovery has started: post-pone action, reserve sep discovery mechanism 737 connection->a2dp_source_discover_seps = true; 738 } 739 } 740 741 // setup state 742 a2dp_source_state = A2DP_W4_CONNECTED; 743 a2dp_source_cid = outgoing_cid; 744 *avdtp_cid = outgoing_cid; 745 746 return ERROR_CODE_SUCCESS; 747 } 748 749 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 750 return avdtp_disconnect(avdtp_cid); 751 } 752 753 754 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 755 return avdtp_start_stream(avdtp_cid, local_seid); 756 } 757 758 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 759 return avdtp_suspend_stream(avdtp_cid, local_seid); 760 } 761 762 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 763 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 764 } 765 766 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 767 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 768 } 769 770 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){ 771 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 772 } 773 774 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){ 775 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 776 } 777 778 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 779 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 780 } 781 782 static uint8_t a2dp_source_config_init(uint8_t local_seid, uint8_t remote_seid, avdtp_media_codec_type_t codec_type) { 783 784 // lookup local stream endpoint 785 avdtp_stream_endpoint_t * local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 786 if (local_stream_endpoint == NULL){ 787 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 788 } 789 790 // lookup remote stream endpoint 791 avdtp_sep_t * remote_sep = NULL; 792 uint8_t i; 793 for (i=0;i<num_remote_seps;i++){ 794 if (remote_seps[i].seid == remote_seid){ 795 remote_sep = &remote_seps[i]; 796 } 797 } 798 if (remote_sep == NULL){ 799 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 800 } 801 802 // set media configuration 803 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 804 local_stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 805 local_stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 806 // remote seid to use 807 local_stream_endpoint->set_config_remote_seid = remote_seid; 808 // enable delay reporting if supported 809 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 810 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 811 } 812 813 // suitable Sink stream endpoint found, configure it 814 sc.local_stream_endpoint = local_stream_endpoint; 815 a2dp_source_have_config = true; 816 817 return ERROR_CODE_SUCCESS; 818 } 819 820 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){ 821 822 if (a2dp_source_cid != a2dp_cid){ 823 return ERROR_CODE_COMMAND_DISALLOWED; 824 } 825 826 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 827 if (connection == NULL){ 828 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 829 } 830 831 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_SBC); 832 if (status != 0) { 833 return status; 834 } 835 // set config in reserved buffer 836 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 837 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 838 avdtp_config_sbc_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 839 840 return ERROR_CODE_SUCCESS; 841 } 842 843 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){ 844 845 if (a2dp_source_cid != a2dp_cid){ 846 return ERROR_CODE_COMMAND_DISALLOWED; 847 } 848 849 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 850 if (connection == NULL){ 851 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 852 } 853 854 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 855 if (status != 0) { 856 return status; 857 } 858 859 // set config in reserved buffer 860 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 861 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 862 avdtp_config_mpeg_audio_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 863 864 return ERROR_CODE_SUCCESS; 865 } 866 867 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){ 868 869 if (a2dp_source_cid != a2dp_cid){ 870 return ERROR_CODE_COMMAND_DISALLOWED; 871 } 872 873 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 874 if (connection == NULL){ 875 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 876 } 877 878 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 879 if (status != 0) { 880 return status; 881 } 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 = 6; 884 avdtp_config_mpeg_aac_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_atrac(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_atrac_t * configuration){ 890 891 if (a2dp_source_cid != a2dp_cid){ 892 return ERROR_CODE_COMMAND_DISALLOWED; 893 } 894 895 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 896 if (connection == NULL){ 897 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 898 } 899 900 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 901 if (status != 0) { 902 return status; 903 } 904 905 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 906 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 907 avdtp_config_atrac_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 908 909 return ERROR_CODE_SUCCESS; 910 } 911 912 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 913 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 914 if (a2dp_source_cid != a2dp_cid){ 915 return ERROR_CODE_COMMAND_DISALLOWED; 916 } 917 918 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 919 if (connection == NULL){ 920 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 921 } 922 923 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 924 if (status != 0) { 925 return status; 926 } 927 928 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 929 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 930 931 return status; 932 } 933 934 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 935 if (a2dp_source_cid != avdtp_cid){ 936 return ERROR_CODE_COMMAND_DISALLOWED; 937 } 938 939 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 940 if (connection == NULL){ 941 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 942 } 943 944 if (a2dp_source_state != A2DP_STREAMING_OPENED) { 945 return ERROR_CODE_COMMAND_DISALLOWED; 946 } 947 948 btstack_assert(sc.local_stream_endpoint != NULL); 949 950 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 951 952 avdtp_media_codec_type_t codec_type = sc.local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 953 uint8_t codec_info_len; 954 switch (codec_type){ 955 case AVDTP_CODEC_SBC: 956 codec_info_len = 4; 957 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 958 avdtp_config_sbc_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 959 break; 960 case AVDTP_CODEC_MPEG_1_2_AUDIO: 961 codec_info_len = 4; 962 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 963 avdtp_config_mpeg_audio_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 964 break; 965 case AVDTP_CODEC_MPEG_2_4_AAC: 966 codec_info_len = 6; 967 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 968 avdtp_config_mpeg_aac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 969 break; 970 case AVDTP_CODEC_ATRAC_FAMILY: 971 codec_info_len = 7; 972 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 973 avdtp_config_atrac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 974 break; 975 default: 976 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 977 } 978 979 avdtp_capabilities_t new_configuration; 980 new_configuration.media_codec.media_type = AVDTP_AUDIO; 981 new_configuration.media_codec.media_codec_type = codec_type; 982 new_configuration.media_codec.media_codec_information_len = codec_info_len; 983 new_configuration.media_codec.media_codec_information = sc.local_stream_endpoint->media_codec_info; 984 985 // start reconfigure 986 a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 987 988 return avdtp_source_reconfigure( 989 avdtp_cid, 990 avdtp_stream_endpoint_seid(sc.local_stream_endpoint), 991 sc.local_stream_endpoint->remote_sep.seid, 992 1 << AVDTP_MEDIA_CODEC, 993 new_configuration 994 ); 995 } 996