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 uint16_t a2dp_source_cid; 84 static uint16_t num_remote_seps; 85 static avdtp_sep_t remote_seps[AVDTP_MAX_SEP_NUM]; 86 87 static bool a2dp_source_have_config; 88 89 static bool stream_endpoint_configured; 90 91 static avdtp_stream_endpoint_context_t sc; 92 static btstack_packet_handler_t a2dp_source_packet_handler_user; 93 94 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 95 static void a2dp_discover_seps_with_next_waiting_connection(void); 96 97 static void a2dp_source_streaming_emit_connection_failed(avdtp_connection_t *connection, uint8_t status) { 98 uint8_t event[14]; 99 int pos = 0; 100 event[pos++] = HCI_EVENT_A2DP_META; 101 event[pos++] = sizeof(event) - 2; 102 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 103 little_endian_store_16(event, pos, connection->avdtp_cid); 104 pos += 2; 105 reverse_bd_addr(connection->remote_addr, &event[pos]); 106 pos += 6; 107 event[pos++] = 0; 108 event[pos++] = 0; 109 event[pos++] = status; 110 111 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 112 } 113 114 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){ 115 uint8_t* attribute; 116 de_create_sequence(service); 117 118 // 0x0000 "Service Record Handle" 119 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 120 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 121 122 // 0x0001 "Service Class ID List" 123 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 124 attribute = de_push_sequence(service); 125 { 126 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); 127 } 128 de_pop_sequence(service, attribute); 129 130 // 0x0004 "Protocol Descriptor List" 131 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 132 attribute = de_push_sequence(service); 133 { 134 uint8_t* l2cpProtocol = de_push_sequence(attribute); 135 { 136 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 137 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 138 } 139 de_pop_sequence(attribute, l2cpProtocol); 140 141 uint8_t* avProtocol = de_push_sequence(attribute); 142 { 143 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 144 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 145 } 146 de_pop_sequence(attribute, avProtocol); 147 } 148 de_pop_sequence(service, attribute); 149 150 // 0x0005 "Public Browse Group" 151 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 152 attribute = de_push_sequence(service); 153 { 154 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 155 } 156 de_pop_sequence(service, attribute); 157 158 // 0x0009 "Bluetooth Profile Descriptor List" 159 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 160 attribute = de_push_sequence(service); 161 { 162 uint8_t *a2dProfile = de_push_sequence(attribute); 163 { 164 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 165 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 166 } 167 de_pop_sequence(attribute, a2dProfile); 168 } 169 de_pop_sequence(service, attribute); 170 171 172 // 0x0100 "Service Name" 173 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 174 if (service_name){ 175 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 176 } else { 177 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_name), (uint8_t *) default_a2dp_source_service_name); 178 } 179 180 // 0x0100 "Provider Name" 181 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 182 if (service_provider_name){ 183 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 184 } else { 185 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_provider_name), (uint8_t *) default_a2dp_source_service_provider_name); 186 } 187 188 // 0x0311 "Supported Features" 189 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 190 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 191 } 192 193 static void a2dp_signaling_emit_reconfigured(uint16_t cid, uint8_t local_seid, uint8_t status){ 194 uint8_t event[7]; 195 int pos = 0; 196 event[pos++] = HCI_EVENT_A2DP_META; 197 event[pos++] = sizeof(event) - 2; 198 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 199 little_endian_store_16(event, pos, cid); 200 pos += 2; 201 event[pos++] = local_seid; 202 event[pos++] = status; 203 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 204 } 205 206 static void a2dp_source_discover_stream_endpoints(uint16_t avdtp_cid){ 207 a2dp_source_cid = avdtp_cid; 208 avdtp_source_discover_stream_endpoints(avdtp_cid); 209 } 210 211 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 212 if (stream_endpoint_configured) return; 213 214 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 215 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 216 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 217 218 if (connection == NULL) { 219 log_info("a2dp_discover_seps_with_next_waiting_connection"); 220 a2dp_discover_seps_with_next_waiting_connection(); 221 return; 222 } 223 224 a2dp_source_discover_stream_endpoints(avdtp_cid); 225 } 226 227 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 228 log_info("a2dp_source_set_config_timer_start cid 0%02x", avdtp_cid); 229 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 230 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 231 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 232 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 233 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 234 } 235 236 static void a2dp_source_set_config_timer_stop(void){ 237 log_info("a2dp_source_set_config_timer_stop"); 238 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 239 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 240 } 241 242 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 243 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 244 sc.active_remote_sep_index = 0; 245 num_remote_seps = 0; 246 memset(remote_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 247 connection->a2dp_source_discover_seps = false; 248 249 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 250 if (outgoing_active && (a2dp_source_cid == connection->avdtp_cid)){ 251 log_info("discover seps"); 252 a2dp_source_discover_stream_endpoints(connection->avdtp_cid); 253 } else { 254 log_info("wait a bit, then discover seps"); 255 a2dp_source_set_config_timer_start(connection->avdtp_cid); 256 } 257 } 258 259 static void a2dp_discover_seps_with_next_waiting_connection(void){ 260 btstack_linked_list_iterator_t it; 261 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 262 while (btstack_linked_list_iterator_has_next(&it)){ 263 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 264 if (!next_connection->a2dp_source_discover_seps) continue; 265 a2dp_start_discovering_seps(next_connection); 266 } 267 } 268 269 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 270 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 271 avdtp_connection_t * avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); 272 btstack_assert(avdtp_connection != NULL); 273 if ((a2dp_source_cid == cid) && (avdtp_connection->a2dp_source_state == A2DP_W4_SET_CONFIGURATION)){ 274 // outgoing: discovery and config of remote sink sep successful, trigger stream open 275 avdtp_connection->a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 276 } else { 277 // incoming: accept cid, lookup local stream endpoint and wait for stream open 278 a2dp_source_cid = cid; 279 sc.local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 280 btstack_assert(sc.local_stream_endpoint != NULL); 281 avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 282 } 283 284 // config set: stop timer 285 a2dp_source_set_config_timer_stop(); 286 stream_endpoint_configured = true; 287 } 288 289 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 290 UNUSED(channel); 291 UNUSED(size); 292 293 uint16_t cid; 294 avdtp_connection_t * connection; 295 296 uint8_t signal_identifier; 297 uint8_t status; 298 uint8_t local_seid; 299 uint8_t remote_seid; 300 301 if (packet_type != HCI_EVENT_PACKET) return; 302 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 303 304 switch (packet[2]){ 305 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 306 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 307 connection = avdtp_get_connection_for_avdtp_cid(cid); 308 btstack_assert(connection != NULL); 309 310 status = avdtp_subevent_signaling_connection_established_get_status(packet); 311 if (status != ERROR_CODE_SUCCESS){ 312 // notify about connection error only if we're initiator 313 if (outgoing_active && (a2dp_source_cid == cid)){ 314 log_info("A2DP source signaling connection failed status 0x%02x", status); 315 outgoing_active = false; 316 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 317 } 318 break; 319 } 320 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 321 322 // notify app 323 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 324 325 // we already have a valid setup 326 if (stream_endpoint_configured) return; 327 328 // start discover seps now if: 329 // - outgoing active: signaling for outgoing connection 330 // - outgoing not active: incoming connection and no sep discover ongoing 331 332 log_info("outgoing_active %d, current avdtp cid 0x%02x, a2dp_source_state %d", outgoing_active, cid, connection->a2dp_source_state); 333 if ((outgoing_active && (a2dp_source_cid == cid)) || (!outgoing_active && (connection->a2dp_source_state == A2DP_IDLE))){ 334 a2dp_start_discovering_seps(connection); 335 } else { 336 // post-pone sep discovery 337 connection->a2dp_source_discover_seps = true; 338 } 339 break; 340 341 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 342 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 343 connection = avdtp_get_connection_for_avdtp_cid(cid); 344 btstack_assert(connection != NULL); 345 346 if (a2dp_source_cid != cid) break; 347 if (connection->a2dp_source_state == A2DP_DISCOVER_SEPS) { 348 avdtp_sep_t sep; 349 memset(&sep, 0, sizeof(avdtp_sep_t)); 350 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 351 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 352 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 353 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 354 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 355 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 356 num_remote_seps); 357 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 358 remote_seps[num_remote_seps++] = sep; 359 } 360 } 361 break; 362 363 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 364 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 365 connection = avdtp_get_connection_for_avdtp_cid(cid); 366 btstack_assert(connection != NULL); 367 368 if (a2dp_source_cid != cid) break; 369 if (connection->a2dp_source_state != A2DP_DISCOVER_SEPS) break; 370 371 if (num_remote_seps > 0){ 372 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 373 sc.active_remote_sep_index = 0; 374 a2dp_source_have_config = false; 375 } else { 376 if (outgoing_active){ 377 outgoing_active = false; 378 connection = avdtp_get_connection_for_avdtp_cid(cid); 379 btstack_assert(connection != NULL); 380 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 381 } 382 383 // continue 384 connection->a2dp_source_state = A2DP_CONNECTED; 385 a2dp_discover_seps_with_next_waiting_connection(); 386 } 387 break; 388 389 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 390 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 391 connection = avdtp_get_connection_for_avdtp_cid(cid); 392 btstack_assert(connection != NULL); 393 394 if (a2dp_source_cid != cid) break; 395 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 396 397 // forward codec capability 398 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 399 400 // select SEP if none configured yet 401 if (a2dp_source_have_config == false){ 402 // find SBC stream endpoint 403 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 404 if (stream_endpoint != NULL){ 405 // choose SBC config params 406 avdtp_configuration_sbc_t configuration; 407 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 408 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 409 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 410 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 411 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 412 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 413 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 414 415 // and pre-select this endpoint 416 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 417 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 418 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 419 } 420 } 421 break; 422 423 // forward codec capability 424 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 425 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 426 connection = avdtp_get_connection_for_avdtp_cid(cid); 427 btstack_assert(connection != NULL); 428 429 if (a2dp_source_cid != cid) break; 430 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 431 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 432 break; 433 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 434 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 435 connection = avdtp_get_connection_for_avdtp_cid(cid); 436 btstack_assert(connection != NULL); 437 438 if (a2dp_source_cid != cid) break; 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_AAC_CAPABILITY); 441 break; 442 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 443 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 444 connection = avdtp_get_connection_for_avdtp_cid(cid); 445 btstack_assert(connection != NULL); 446 447 if (a2dp_source_cid != cid) break; 448 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 449 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 450 break; 451 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 452 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 453 connection = avdtp_get_connection_for_avdtp_cid(cid); 454 btstack_assert(connection != NULL); 455 456 if (a2dp_source_cid != cid) break; 457 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 458 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 459 break; 460 461 // not forwarded 462 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 463 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 464 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 465 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 466 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 467 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 468 break; 469 470 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 471 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 472 connection = avdtp_get_connection_for_avdtp_cid(cid); 473 btstack_assert(connection != NULL); 474 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_state); 475 476 if (a2dp_source_cid != cid) break; 477 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 478 479 // store delay reporting capability 480 remote_seps[sc.active_remote_sep_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 481 482 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 483 break; 484 485 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 486 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 487 connection = avdtp_get_connection_for_avdtp_cid(cid); 488 btstack_assert(connection != NULL); 489 490 if (a2dp_source_cid != cid) break; 491 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 492 493 // forward capabilities done for endpoint 494 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 495 496 // endpoint was not suitable, check next one 497 sc.active_remote_sep_index++; 498 if (sc.active_remote_sep_index >= num_remote_seps){ 499 500 // emit 'all capabilities for all seps reported' 501 uint8_t event[6]; 502 uint8_t pos = 0; 503 event[pos++] = HCI_EVENT_A2DP_META; 504 event[pos++] = sizeof(event) - 2; 505 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 506 little_endian_store_16(event, pos, cid); 507 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 508 509 // do we have a valid config? 510 if (a2dp_source_have_config){ 511 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 512 a2dp_source_have_config = false; 513 break; 514 } 515 516 // we didn't find a suitable SBC stream endpoint, sorry. 517 if (outgoing_active){ 518 outgoing_active = false; 519 connection = avdtp_get_connection_for_avdtp_cid(cid); 520 btstack_assert(connection != NULL); 521 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 522 } 523 connection->a2dp_source_state = A2DP_CONNECTED; 524 a2dp_discover_seps_with_next_waiting_connection(); 525 } 526 break; 527 528 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 529 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 530 connection = avdtp_get_connection_for_avdtp_cid(cid); 531 btstack_assert(connection != NULL); 532 533 if (a2dp_source_cid != cid) break; 534 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 535 break; 536 537 // forward codec configuration 538 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 539 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 540 a2dp_handle_received_configuration(packet, local_seid); 541 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 542 break; 543 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 544 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 545 a2dp_handle_received_configuration(packet, local_seid); 546 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 547 break; 548 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 549 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 550 a2dp_handle_received_configuration(packet, local_seid); 551 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 552 break; 553 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 554 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 555 a2dp_handle_received_configuration(packet, local_seid); 556 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 557 break; 558 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 559 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 560 a2dp_handle_received_configuration(packet, local_seid); 561 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 562 break; 563 564 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 565 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 566 break; 567 568 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 569 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 570 connection = avdtp_get_connection_for_avdtp_cid(cid); 571 btstack_assert(connection != NULL); 572 573 if (a2dp_source_cid != cid) break; 574 if (connection->a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 575 576 outgoing_active = false; 577 status = avdtp_subevent_streaming_connection_established_get_status(packet); 578 if (status != ERROR_CODE_SUCCESS){ 579 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 580 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 581 break; 582 } 583 584 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 585 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 586 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 587 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 588 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 589 break; 590 591 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 592 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 593 connection = avdtp_get_connection_for_avdtp_cid(cid); 594 btstack_assert(connection != NULL); 595 596 // reset discovery timer while remote is active 597 if (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) { 598 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(&a2dp_source_set_config_timer); 599 if ((avdtp_cid == 0) || (avdtp_cid != cid)) break; 600 log_info("Reset discovery timer"); 601 a2dp_source_set_config_timer_start(avdtp_cid); 602 break; 603 } 604 605 if (a2dp_source_cid != cid) break; 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 (a2dp_source_cid != cid) break; 665 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 666 667 connection->a2dp_source_state = A2DP_CONNECTED; 668 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 669 break; 670 671 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 672 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 673 connection = avdtp_get_connection_for_avdtp_cid(cid); 674 btstack_assert(connection != NULL); 675 676 if (a2dp_source_cid != cid) break; 677 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 678 679 connection->a2dp_source_state = A2DP_CONNECTED; 680 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 681 break; 682 683 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 684 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 685 connection = avdtp_get_connection_for_avdtp_cid(cid); 686 btstack_assert(connection != NULL); 687 688 if (a2dp_source_cid != cid) break; 689 690 connection->a2dp_source_state = A2DP_CONFIGURED; 691 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 692 break; 693 694 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 695 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 696 connection = avdtp_get_connection_for_avdtp_cid(cid); 697 btstack_assert(connection != NULL); 698 699 // connect/release are passed on to app 700 if (a2dp_source_cid == cid){ 701 stream_endpoint_configured = false; 702 sc.local_stream_endpoint = NULL; 703 704 connection->a2dp_source_state = A2DP_IDLE; 705 a2dp_source_cid = 0; 706 } 707 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 708 break; 709 710 default: 711 break; 712 } 713 } 714 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 715 btstack_assert(callback != NULL); 716 717 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 718 a2dp_source_packet_handler_user = callback; 719 } 720 721 void a2dp_source_init(void){ 722 (void) memset(&sc, 0, sizeof(avdtp_stream_endpoint_context_t)); 723 724 avdtp_source_init(); 725 } 726 727 void a2dp_source_deinit(void){ 728 avdtp_source_deinit(); 729 730 outgoing_active = false; 731 stream_endpoint_configured = false; 732 a2dp_source_cid = 0; 733 num_remote_seps = 0; 734 } 735 736 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 737 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 738 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 739 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 740 if (!stream_endpoint){ 741 return NULL; 742 } 743 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 744 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 745 codec_capabilities, codec_capabilities_len); 746 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 747 748 // store user codec configuration buffer 749 stream_endpoint->media_codec_type = media_codec_type; 750 stream_endpoint->media_codec_configuration_info = codec_configuration; 751 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 752 753 return stream_endpoint; 754 } 755 756 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 757 avdtp_source_finalize_stream_endpoint(stream_endpoint); 758 } 759 760 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 761 if (outgoing_active || stream_endpoint_configured) { 762 return ERROR_CODE_COMMAND_DISALLOWED; 763 } 764 765 uint16_t outgoing_cid; 766 767 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 768 if (connection == NULL){ 769 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 770 if (status != ERROR_CODE_SUCCESS) { 771 // if there's already a connection for for remote addr, avdtp_source_connect fails, 772 // but the stream will get set-up nevertheless 773 return status; 774 } 775 outgoing_active = true; 776 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 777 btstack_assert(connection != NULL); 778 779 // setup state 780 connection->a2dp_source_state = A2DP_W4_CONNECTED; 781 a2dp_source_cid = outgoing_cid; 782 *avdtp_cid = outgoing_cid; 783 784 } else { 785 // check state 786 switch (connection->a2dp_source_state){ 787 case A2DP_IDLE: 788 case A2DP_CONNECTED: 789 // restart process e.g. if there no suitable stream endpoints or they had been in use 790 outgoing_active = true; 791 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 792 *avdtp_cid = connection->avdtp_cid; 793 a2dp_start_discovering_seps(connection); 794 break; 795 default: 796 return ERROR_CODE_COMMAND_DISALLOWED; 797 } 798 } 799 return ERROR_CODE_SUCCESS; 800 } 801 802 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 803 return avdtp_disconnect(avdtp_cid); 804 } 805 806 807 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 808 return avdtp_start_stream(avdtp_cid, local_seid); 809 } 810 811 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 812 return avdtp_suspend_stream(avdtp_cid, local_seid); 813 } 814 815 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 816 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 817 } 818 819 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 820 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 821 } 822 823 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){ 824 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 825 } 826 827 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){ 828 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 829 } 830 831 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 832 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 833 } 834 835 static uint8_t a2dp_source_config_init(uint8_t local_seid, uint8_t remote_seid, avdtp_media_codec_type_t codec_type) { 836 837 // lookup local stream endpoint 838 avdtp_stream_endpoint_t * local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 839 if (local_stream_endpoint == NULL){ 840 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 841 } 842 843 // lookup remote stream endpoint 844 avdtp_sep_t * remote_sep = NULL; 845 uint8_t i; 846 for (i=0;i<num_remote_seps;i++){ 847 if (remote_seps[i].seid == remote_seid){ 848 remote_sep = &remote_seps[i]; 849 } 850 } 851 if (remote_sep == NULL){ 852 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 853 } 854 855 // set media configuration 856 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 857 local_stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 858 local_stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 859 // remote seid to use 860 local_stream_endpoint->set_config_remote_seid = remote_seid; 861 // enable delay reporting if supported 862 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 863 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 864 } 865 866 // suitable Sink stream endpoint found, configure it 867 sc.local_stream_endpoint = local_stream_endpoint; 868 a2dp_source_have_config = true; 869 870 return ERROR_CODE_SUCCESS; 871 } 872 873 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){ 874 875 if (a2dp_source_cid != a2dp_cid){ 876 return ERROR_CODE_COMMAND_DISALLOWED; 877 } 878 879 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 880 if (connection == NULL){ 881 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 882 } 883 884 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_SBC); 885 if (status != 0) { 886 return status; 887 } 888 // set config in reserved buffer 889 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 890 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 891 avdtp_config_sbc_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 892 893 return ERROR_CODE_SUCCESS; 894 } 895 896 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){ 897 898 if (a2dp_source_cid != a2dp_cid){ 899 return ERROR_CODE_COMMAND_DISALLOWED; 900 } 901 902 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 903 if (connection == NULL){ 904 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 905 } 906 907 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 908 if (status != 0) { 909 return status; 910 } 911 912 // set config in reserved buffer 913 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 914 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 915 avdtp_config_mpeg_audio_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 916 917 return ERROR_CODE_SUCCESS; 918 } 919 920 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){ 921 922 if (a2dp_source_cid != a2dp_cid){ 923 return ERROR_CODE_COMMAND_DISALLOWED; 924 } 925 926 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(local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 932 if (status != 0) { 933 return status; 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 = 6; 937 avdtp_config_mpeg_aac_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_atrac(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_atrac_t * configuration){ 943 944 if (a2dp_source_cid != a2dp_cid){ 945 return ERROR_CODE_COMMAND_DISALLOWED; 946 } 947 948 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 949 if (connection == NULL){ 950 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 951 } 952 953 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 954 if (status != 0) { 955 return status; 956 } 957 958 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 959 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 960 avdtp_config_atrac_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 961 962 return ERROR_CODE_SUCCESS; 963 } 964 965 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 966 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 967 if (a2dp_source_cid != a2dp_cid){ 968 return ERROR_CODE_COMMAND_DISALLOWED; 969 } 970 971 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 972 if (connection == NULL){ 973 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 974 } 975 976 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 977 if (status != 0) { 978 return status; 979 } 980 981 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 982 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 983 984 return status; 985 } 986 987 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 988 if (a2dp_source_cid != avdtp_cid){ 989 return ERROR_CODE_COMMAND_DISALLOWED; 990 } 991 992 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 993 if (connection == NULL){ 994 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 995 } 996 997 if (connection->a2dp_source_state != A2DP_STREAMING_OPENED) { 998 return ERROR_CODE_COMMAND_DISALLOWED; 999 } 1000 1001 btstack_assert(sc.local_stream_endpoint != NULL); 1002 1003 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 1004 1005 avdtp_media_codec_type_t codec_type = sc.local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 1006 uint8_t codec_info_len; 1007 switch (codec_type){ 1008 case AVDTP_CODEC_SBC: 1009 codec_info_len = 4; 1010 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1011 avdtp_config_sbc_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 1012 break; 1013 case AVDTP_CODEC_MPEG_1_2_AUDIO: 1014 codec_info_len = 4; 1015 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1016 avdtp_config_mpeg_audio_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 1017 break; 1018 case AVDTP_CODEC_MPEG_2_4_AAC: 1019 codec_info_len = 6; 1020 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1021 avdtp_config_mpeg_aac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 1022 break; 1023 case AVDTP_CODEC_ATRAC_FAMILY: 1024 codec_info_len = 7; 1025 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1026 avdtp_config_atrac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 1027 break; 1028 default: 1029 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1030 } 1031 1032 avdtp_capabilities_t new_configuration; 1033 new_configuration.media_codec.media_type = AVDTP_AUDIO; 1034 new_configuration.media_codec.media_codec_type = codec_type; 1035 new_configuration.media_codec.media_codec_information_len = codec_info_len; 1036 new_configuration.media_codec.media_codec_information = sc.local_stream_endpoint->media_codec_info; 1037 1038 // start reconfigure 1039 connection->a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 1040 1041 return avdtp_source_reconfigure( 1042 avdtp_cid, 1043 avdtp_stream_endpoint_seid(sc.local_stream_endpoint), 1044 sc.local_stream_endpoint->remote_sep.seid, 1045 1 << AVDTP_MEDIA_CODEC, 1046 new_configuration 1047 ); 1048 } 1049