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 have_config; 93 static bool a2dp_source_have_config(const avdtp_connection_t * connection){ 94 UNUSED(connection); 95 return have_config; 96 } 97 98 static bool stream_endpoint_configured; 99 static bool a2dp_source_stream_endpoint_configured(const avdtp_connection_t * connection){ 100 UNUSED(connection); 101 return stream_endpoint_configured; 102 } 103 104 static bool outgoing_active; 105 static bool a2dp_source_outgoing_active(const avdtp_connection_t * connection){ 106 UNUSED(connection); 107 return outgoing_active; 108 } 109 110 static void a2dp_source_streaming_emit_connection_failed(avdtp_connection_t *connection, uint8_t status) { 111 uint8_t event[14]; 112 int pos = 0; 113 event[pos++] = HCI_EVENT_A2DP_META; 114 event[pos++] = sizeof(event) - 2; 115 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 116 little_endian_store_16(event, pos, connection->avdtp_cid); 117 pos += 2; 118 reverse_bd_addr(connection->remote_addr, &event[pos]); 119 pos += 6; 120 event[pos++] = 0; 121 event[pos++] = 0; 122 event[pos++] = status; 123 124 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 125 } 126 127 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){ 128 uint8_t* attribute; 129 de_create_sequence(service); 130 131 // 0x0000 "Service Record Handle" 132 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 133 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 134 135 // 0x0001 "Service Class ID List" 136 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 137 attribute = de_push_sequence(service); 138 { 139 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); 140 } 141 de_pop_sequence(service, attribute); 142 143 // 0x0004 "Protocol Descriptor List" 144 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 145 attribute = de_push_sequence(service); 146 { 147 uint8_t* l2cpProtocol = de_push_sequence(attribute); 148 { 149 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 150 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 151 } 152 de_pop_sequence(attribute, l2cpProtocol); 153 154 uint8_t* avProtocol = de_push_sequence(attribute); 155 { 156 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 157 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 158 } 159 de_pop_sequence(attribute, avProtocol); 160 } 161 de_pop_sequence(service, attribute); 162 163 // 0x0005 "Public Browse Group" 164 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 165 attribute = de_push_sequence(service); 166 { 167 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 168 } 169 de_pop_sequence(service, attribute); 170 171 // 0x0009 "Bluetooth Profile Descriptor List" 172 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 173 attribute = de_push_sequence(service); 174 { 175 uint8_t *a2dProfile = de_push_sequence(attribute); 176 { 177 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 178 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 179 } 180 de_pop_sequence(attribute, a2dProfile); 181 } 182 de_pop_sequence(service, attribute); 183 184 185 // 0x0100 "Service Name" 186 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 187 if (service_name){ 188 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 189 } else { 190 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_name), (uint8_t *) default_a2dp_source_service_name); 191 } 192 193 // 0x0100 "Provider Name" 194 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 195 if (service_provider_name){ 196 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 197 } else { 198 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_provider_name), (uint8_t *) default_a2dp_source_service_provider_name); 199 } 200 201 // 0x0311 "Supported Features" 202 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 203 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 204 } 205 206 static void a2dp_signaling_emit_reconfigured(uint16_t cid, uint8_t local_seid, uint8_t status){ 207 uint8_t event[7]; 208 int pos = 0; 209 event[pos++] = HCI_EVENT_A2DP_META; 210 event[pos++] = sizeof(event) - 2; 211 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 212 little_endian_store_16(event, pos, cid); 213 pos += 2; 214 event[pos++] = local_seid; 215 event[pos++] = status; 216 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 217 } 218 219 static void a2dp_source_discover_stream_endpoints(uint16_t avdtp_cid){ 220 a2dp_source_cid = avdtp_cid; 221 avdtp_source_discover_stream_endpoints(avdtp_cid); 222 } 223 224 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 225 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 226 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 227 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 228 229 if (a2dp_source_stream_endpoint_configured(connection)) return; 230 231 if (connection == NULL) { 232 log_info("a2dp_discover_seps_with_next_waiting_connection"); 233 a2dp_discover_seps_with_next_waiting_connection(); 234 return; 235 } 236 237 a2dp_source_discover_stream_endpoints(avdtp_cid); 238 } 239 240 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 241 log_info("a2dp_source_set_config_timer_start cid 0%02x", avdtp_cid); 242 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 243 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 244 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 245 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 246 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 247 } 248 249 static void a2dp_source_set_config_timer_stop(void){ 250 log_info("a2dp_source_set_config_timer_stop"); 251 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 252 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 253 } 254 255 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 256 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 257 sc.active_remote_sep_index = 0; 258 num_remote_seps = 0; 259 memset(remote_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 260 connection->a2dp_source_discover_seps = false; 261 262 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 263 if (a2dp_source_outgoing_active(connection) && (a2dp_source_cid == connection->avdtp_cid)){ 264 log_info("discover seps"); 265 a2dp_source_discover_stream_endpoints(connection->avdtp_cid); 266 } else { 267 log_info("wait a bit, then discover seps"); 268 a2dp_source_set_config_timer_start(connection->avdtp_cid); 269 } 270 } 271 272 static void a2dp_discover_seps_with_next_waiting_connection(void){ 273 btstack_linked_list_iterator_t it; 274 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 275 while (btstack_linked_list_iterator_has_next(&it)){ 276 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 277 if (!next_connection->a2dp_source_discover_seps) continue; 278 a2dp_start_discovering_seps(next_connection); 279 } 280 } 281 282 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 283 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 284 avdtp_connection_t * avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); 285 btstack_assert(avdtp_connection != NULL); 286 if ((a2dp_source_cid == cid) && (avdtp_connection->a2dp_source_state == A2DP_W4_SET_CONFIGURATION)){ 287 // outgoing: discovery and config of remote sink sep successful, trigger stream open 288 avdtp_connection->a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 289 } else { 290 // incoming: accept cid, lookup local stream endpoint and wait for stream open 291 a2dp_source_cid = cid; 292 sc.local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 293 btstack_assert(sc.local_stream_endpoint != NULL); 294 avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 295 } 296 297 // config set: stop timer 298 a2dp_source_set_config_timer_stop(); 299 stream_endpoint_configured = true; 300 } 301 302 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 303 UNUSED(channel); 304 UNUSED(size); 305 306 uint16_t cid; 307 avdtp_connection_t * connection; 308 309 uint8_t signal_identifier; 310 uint8_t status; 311 uint8_t local_seid; 312 uint8_t remote_seid; 313 314 if (packet_type != HCI_EVENT_PACKET) return; 315 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 316 317 switch (packet[2]){ 318 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 319 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 320 connection = avdtp_get_connection_for_avdtp_cid(cid); 321 btstack_assert(connection != NULL); 322 323 status = avdtp_subevent_signaling_connection_established_get_status(packet); 324 if (status != ERROR_CODE_SUCCESS){ 325 // notify about connection error only if we're initiator 326 if (a2dp_source_outgoing_active(connection) && (a2dp_source_cid == cid)){ 327 log_info("A2DP source signaling connection failed status 0x%02x", status); 328 outgoing_active = false; 329 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 330 } 331 break; 332 } 333 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 334 335 // notify app 336 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 337 338 // we already have a valid setup 339 if (a2dp_source_stream_endpoint_configured(connection)) return; 340 341 // start discover seps now if: 342 // - outgoing active: signaling for outgoing connection 343 // - outgoing not active: incoming connection and no sep discover ongoing 344 345 log_info("outgoing_active %d, current avdtp cid 0x%02x, a2dp_source_state %d", a2dp_source_outgoing_active(connection), cid, connection->a2dp_source_state); 346 if ((a2dp_source_outgoing_active(connection) && (a2dp_source_cid == cid)) || (!a2dp_source_outgoing_active(connection) && (connection->a2dp_source_state == A2DP_IDLE))){ 347 a2dp_start_discovering_seps(connection); 348 } else { 349 // post-pone sep discovery 350 connection->a2dp_source_discover_seps = true; 351 } 352 break; 353 354 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 355 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 356 connection = avdtp_get_connection_for_avdtp_cid(cid); 357 btstack_assert(connection != NULL); 358 359 if (connection->a2dp_source_state == A2DP_DISCOVER_SEPS) { 360 avdtp_sep_t sep; 361 memset(&sep, 0, sizeof(avdtp_sep_t)); 362 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 363 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 364 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 365 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 366 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 367 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 368 num_remote_seps); 369 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 370 remote_seps[num_remote_seps++] = sep; 371 } 372 } 373 break; 374 375 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 376 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 377 connection = avdtp_get_connection_for_avdtp_cid(cid); 378 btstack_assert(connection != NULL); 379 380 if (connection->a2dp_source_state != A2DP_DISCOVER_SEPS) break; 381 382 if (num_remote_seps > 0){ 383 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 384 sc.active_remote_sep_index = 0; 385 have_config = false; 386 } else { 387 if (a2dp_source_outgoing_active(connection)){ 388 outgoing_active = false; 389 connection = avdtp_get_connection_for_avdtp_cid(cid); 390 btstack_assert(connection != NULL); 391 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 392 } 393 394 // continue 395 connection->a2dp_source_state = A2DP_CONNECTED; 396 a2dp_discover_seps_with_next_waiting_connection(); 397 } 398 break; 399 400 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 401 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 402 connection = avdtp_get_connection_for_avdtp_cid(cid); 403 btstack_assert(connection != NULL); 404 405 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 406 407 // forward codec capability 408 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 409 410 // select SEP if none configured yet 411 if (a2dp_source_have_config(connection) == false){ 412 // find SBC stream endpoint 413 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 414 if (stream_endpoint != NULL){ 415 // choose SBC config params 416 avdtp_configuration_sbc_t configuration; 417 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 418 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 419 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 420 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 421 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 422 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 423 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 424 425 // and pre-select this endpoint 426 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 427 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 428 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 429 } 430 } 431 break; 432 433 // forward codec capability 434 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 435 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 436 connection = avdtp_get_connection_for_avdtp_cid(cid); 437 btstack_assert(connection != NULL); 438 439 if (connection->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_MPEG_AUDIO_CAPABILITY); 441 break; 442 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 443 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 444 connection = avdtp_get_connection_for_avdtp_cid(cid); 445 btstack_assert(connection != NULL); 446 447 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 448 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 449 break; 450 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 451 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 452 connection = avdtp_get_connection_for_avdtp_cid(cid); 453 btstack_assert(connection != NULL); 454 455 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 456 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 457 break; 458 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 459 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 460 connection = avdtp_get_connection_for_avdtp_cid(cid); 461 btstack_assert(connection != NULL); 462 463 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 464 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 465 break; 466 467 // not forwarded 468 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 469 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 470 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 471 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 472 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 473 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 474 break; 475 476 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 477 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 478 connection = avdtp_get_connection_for_avdtp_cid(cid); 479 btstack_assert(connection != NULL); 480 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_state); 481 482 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 483 484 // store delay reporting capability 485 remote_seps[sc.active_remote_sep_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 486 487 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 488 break; 489 490 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 491 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 492 connection = avdtp_get_connection_for_avdtp_cid(cid); 493 btstack_assert(connection != NULL); 494 495 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 496 497 // forward capabilities done for endpoint 498 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 499 500 // endpoint was not suitable, check next one 501 sc.active_remote_sep_index++; 502 if (sc.active_remote_sep_index >= num_remote_seps){ 503 504 // emit 'all capabilities for all seps reported' 505 uint8_t event[6]; 506 uint8_t pos = 0; 507 event[pos++] = HCI_EVENT_A2DP_META; 508 event[pos++] = sizeof(event) - 2; 509 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 510 little_endian_store_16(event, pos, cid); 511 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 512 513 // do we have a valid config? 514 if (a2dp_source_have_config(connection)){ 515 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 516 have_config = false; 517 break; 518 } 519 520 // we didn't find a suitable SBC stream endpoint, sorry. 521 if (a2dp_source_outgoing_active(connection)){ 522 outgoing_active = false; 523 connection = avdtp_get_connection_for_avdtp_cid(cid); 524 btstack_assert(connection != NULL); 525 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 526 } 527 connection->a2dp_source_state = A2DP_CONNECTED; 528 a2dp_discover_seps_with_next_waiting_connection(); 529 } 530 break; 531 532 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 533 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 534 connection = avdtp_get_connection_for_avdtp_cid(cid); 535 btstack_assert(connection != NULL); 536 537 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 538 break; 539 540 // forward codec configuration 541 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 542 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 543 a2dp_handle_received_configuration(packet, local_seid); 544 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 545 break; 546 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 547 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 548 a2dp_handle_received_configuration(packet, local_seid); 549 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 550 break; 551 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 552 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 553 a2dp_handle_received_configuration(packet, local_seid); 554 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 555 break; 556 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 557 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 558 a2dp_handle_received_configuration(packet, local_seid); 559 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 560 break; 561 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 562 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 563 a2dp_handle_received_configuration(packet, local_seid); 564 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 565 break; 566 567 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 568 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 569 break; 570 571 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 572 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 573 connection = avdtp_get_connection_for_avdtp_cid(cid); 574 btstack_assert(connection != NULL); 575 576 if (connection->a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 577 578 outgoing_active = false; 579 status = avdtp_subevent_streaming_connection_established_get_status(packet); 580 if (status != ERROR_CODE_SUCCESS){ 581 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 582 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 583 break; 584 } 585 586 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 587 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 588 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 589 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 590 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 591 break; 592 593 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 594 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 595 connection = avdtp_get_connection_for_avdtp_cid(cid); 596 btstack_assert(connection != NULL); 597 598 // reset discovery timer while remote is active 599 if (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) { 600 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(&a2dp_source_set_config_timer); 601 if ((avdtp_cid == 0) || (avdtp_cid != cid)) break; 602 log_info("Reset discovery timer"); 603 a2dp_source_set_config_timer_start(avdtp_cid); 604 break; 605 } 606 607 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 608 609 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_state, cid); 610 611 switch (connection->a2dp_source_state){ 612 case A2DP_GET_CAPABILITIES: 613 remote_seid = remote_seps[sc.active_remote_sep_index].seid; 614 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 615 avdtp_source_get_all_capabilities(cid, remote_seid); 616 return; 617 618 case A2DP_SET_CONFIGURATION: 619 remote_seid = sc.local_stream_endpoint->set_config_remote_seid; 620 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); 621 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 622 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); 623 return; 624 625 case A2DP_W2_OPEN_STREAM_WITH_SEID: 626 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); 627 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 628 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.local_stream_endpoint->remote_sep.seid); 629 break; 630 631 case A2DP_W2_RECONFIGURE_WITH_SEID: 632 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); 633 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), ERROR_CODE_SUCCESS); 634 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 635 break; 636 637 case A2DP_STREAMING_OPENED: 638 switch (signal_identifier){ 639 case AVDTP_SI_START: 640 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 641 break; 642 case AVDTP_SI_SUSPEND: 643 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 644 break; 645 case AVDTP_SI_ABORT: 646 case AVDTP_SI_CLOSE: 647 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 648 break; 649 default: 650 break; 651 } 652 break; 653 654 default: 655 break; 656 } 657 break; 658 659 case AVDTP_SUBEVENT_SIGNALING_REJECT: 660 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 661 connection = avdtp_get_connection_for_avdtp_cid(cid); 662 btstack_assert(connection != NULL); 663 664 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 665 666 connection->a2dp_source_state = A2DP_CONNECTED; 667 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 668 break; 669 670 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 671 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 672 connection = avdtp_get_connection_for_avdtp_cid(cid); 673 btstack_assert(connection != NULL); 674 675 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 676 677 connection->a2dp_source_state = A2DP_CONNECTED; 678 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 679 break; 680 681 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 682 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 683 connection = avdtp_get_connection_for_avdtp_cid(cid); 684 btstack_assert(connection != NULL); 685 686 connection->a2dp_source_state = A2DP_CONFIGURED; 687 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 688 break; 689 690 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 691 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 692 connection = avdtp_get_connection_for_avdtp_cid(cid); 693 btstack_assert(connection != NULL); 694 695 // connect/release are passed on to app 696 if (a2dp_source_cid == cid){ 697 stream_endpoint_configured = false; 698 sc.local_stream_endpoint = NULL; 699 700 connection->a2dp_source_state = A2DP_IDLE; 701 a2dp_source_cid = 0; 702 } 703 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 704 break; 705 706 default: 707 break; 708 } 709 } 710 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 711 btstack_assert(callback != NULL); 712 713 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 714 a2dp_source_packet_handler_user = callback; 715 } 716 717 void a2dp_source_init(void){ 718 (void) memset(&sc, 0, sizeof(avdtp_stream_endpoint_context_t)); 719 720 avdtp_source_init(); 721 } 722 723 void a2dp_source_deinit(void){ 724 avdtp_source_deinit(); 725 726 outgoing_active = false; 727 stream_endpoint_configured = false; 728 a2dp_source_cid = 0; 729 num_remote_seps = 0; 730 } 731 732 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 733 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 734 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 735 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 736 if (!stream_endpoint){ 737 return NULL; 738 } 739 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 740 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 741 codec_capabilities, codec_capabilities_len); 742 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 743 744 // store user codec configuration buffer 745 stream_endpoint->media_codec_type = media_codec_type; 746 stream_endpoint->media_codec_configuration_info = codec_configuration; 747 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 748 749 return stream_endpoint; 750 } 751 752 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 753 avdtp_source_finalize_stream_endpoint(stream_endpoint); 754 } 755 756 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 757 758 uint16_t outgoing_cid; 759 760 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 761 if (connection == NULL){ 762 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 763 if (status != ERROR_CODE_SUCCESS) { 764 // if there's already a connection for for remote addr, avdtp_source_connect fails, 765 // but the stream will get set-up nevertheless 766 return status; 767 } 768 outgoing_active = true; 769 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 770 btstack_assert(connection != NULL); 771 772 // setup state 773 connection->a2dp_source_state = A2DP_W4_CONNECTED; 774 a2dp_source_cid = outgoing_cid; 775 *avdtp_cid = outgoing_cid; 776 777 } else { 778 if (a2dp_source_outgoing_active(connection) || a2dp_source_stream_endpoint_configured(connection)) { 779 return ERROR_CODE_COMMAND_DISALLOWED; 780 } 781 782 // check state 783 switch (connection->a2dp_source_state){ 784 case A2DP_IDLE: 785 case A2DP_CONNECTED: 786 // restart process e.g. if there no suitable stream endpoints or they had been in use 787 outgoing_active = true; 788 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 789 *avdtp_cid = connection->avdtp_cid; 790 a2dp_start_discovering_seps(connection); 791 break; 792 default: 793 return ERROR_CODE_COMMAND_DISALLOWED; 794 } 795 } 796 return ERROR_CODE_SUCCESS; 797 } 798 799 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 800 return avdtp_disconnect(avdtp_cid); 801 } 802 803 804 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 805 return avdtp_start_stream(avdtp_cid, local_seid); 806 } 807 808 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 809 return avdtp_suspend_stream(avdtp_cid, local_seid); 810 } 811 812 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 813 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 814 } 815 816 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 817 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 818 } 819 820 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){ 821 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 822 } 823 824 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){ 825 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 826 } 827 828 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 829 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 830 } 831 832 static uint8_t a2dp_source_config_init(uint8_t local_seid, uint8_t remote_seid, avdtp_media_codec_type_t codec_type) { 833 834 // lookup local stream endpoint 835 avdtp_stream_endpoint_t * local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 836 if (local_stream_endpoint == NULL){ 837 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 838 } 839 840 // lookup remote stream endpoint 841 avdtp_sep_t * remote_sep = NULL; 842 uint8_t i; 843 for (i=0;i<num_remote_seps;i++){ 844 if (remote_seps[i].seid == remote_seid){ 845 remote_sep = &remote_seps[i]; 846 } 847 } 848 if (remote_sep == NULL){ 849 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 850 } 851 852 // set media configuration 853 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 854 local_stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 855 local_stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 856 // remote seid to use 857 local_stream_endpoint->set_config_remote_seid = remote_seid; 858 // enable delay reporting if supported 859 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 860 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 861 } 862 863 // suitable Sink stream endpoint found, configure it 864 sc.local_stream_endpoint = local_stream_endpoint; 865 have_config = true; 866 867 return ERROR_CODE_SUCCESS; 868 } 869 870 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){ 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(local_seid, remote_seid, AVDTP_CODEC_SBC); 877 if (status != 0) { 878 return status; 879 } 880 // set config in reserved buffer 881 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 882 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 883 avdtp_config_sbc_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 884 885 return ERROR_CODE_SUCCESS; 886 } 887 888 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){ 889 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 890 if (connection == NULL){ 891 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 892 } 893 894 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 895 if (status != 0) { 896 return status; 897 } 898 899 // set config in reserved buffer 900 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 901 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 902 avdtp_config_mpeg_audio_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 903 904 return ERROR_CODE_SUCCESS; 905 } 906 907 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){ 908 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 909 if (connection == NULL){ 910 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 911 } 912 913 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 914 if (status != 0) { 915 return status; 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 = 6; 919 avdtp_config_mpeg_aac_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_atrac(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_atrac_t * configuration){ 925 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 926 if (connection == NULL){ 927 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 928 } 929 930 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 931 if (status != 0) { 932 return status; 933 } 934 935 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 936 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 937 avdtp_config_atrac_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 938 939 return ERROR_CODE_SUCCESS; 940 } 941 942 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 943 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 944 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 945 if (connection == NULL){ 946 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 947 } 948 949 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 950 if (status != 0) { 951 return status; 952 } 953 954 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 955 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 956 957 return status; 958 } 959 960 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 961 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 962 if (connection == NULL){ 963 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 964 } 965 966 if (connection->a2dp_source_state != A2DP_STREAMING_OPENED) { 967 return ERROR_CODE_COMMAND_DISALLOWED; 968 } 969 970 btstack_assert(sc.local_stream_endpoint != NULL); 971 972 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 973 974 avdtp_media_codec_type_t codec_type = sc.local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 975 uint8_t codec_info_len; 976 switch (codec_type){ 977 case AVDTP_CODEC_SBC: 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_sbc_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 981 break; 982 case AVDTP_CODEC_MPEG_1_2_AUDIO: 983 codec_info_len = 4; 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_audio_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 986 break; 987 case AVDTP_CODEC_MPEG_2_4_AAC: 988 codec_info_len = 6; 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_mpeg_aac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 991 break; 992 case AVDTP_CODEC_ATRAC_FAMILY: 993 codec_info_len = 7; 994 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 995 avdtp_config_atrac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 996 break; 997 default: 998 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 999 } 1000 1001 avdtp_capabilities_t new_configuration; 1002 new_configuration.media_codec.media_type = AVDTP_AUDIO; 1003 new_configuration.media_codec.media_codec_type = codec_type; 1004 new_configuration.media_codec.media_codec_information_len = codec_info_len; 1005 new_configuration.media_codec.media_codec_information = sc.local_stream_endpoint->media_codec_info; 1006 1007 // start reconfigure 1008 connection->a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 1009 1010 return avdtp_source_reconfigure( 1011 avdtp_cid, 1012 avdtp_stream_endpoint_seid(sc.local_stream_endpoint), 1013 sc.local_stream_endpoint->remote_sep.seid, 1014 1 << AVDTP_MEDIA_CODEC, 1015 new_configuration 1016 ); 1017 } 1018