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 outgoing_active; 93 static bool a2dp_source_outgoing_active(const avdtp_connection_t * connection){ 94 UNUSED(connection); 95 return outgoing_active; 96 } 97 98 static void a2dp_source_streaming_emit_connection_failed(avdtp_connection_t *connection, uint8_t status) { 99 uint8_t event[14]; 100 int pos = 0; 101 event[pos++] = HCI_EVENT_A2DP_META; 102 event[pos++] = sizeof(event) - 2; 103 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 104 little_endian_store_16(event, pos, connection->avdtp_cid); 105 pos += 2; 106 reverse_bd_addr(connection->remote_addr, &event[pos]); 107 pos += 6; 108 event[pos++] = 0; 109 event[pos++] = 0; 110 event[pos++] = status; 111 112 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 113 } 114 115 void a2dp_source_create_sdp_record(uint8_t * service, uint32_t service_record_handle, uint16_t supported_features, const char * service_name, const char * service_provider_name){ 116 uint8_t* attribute; 117 de_create_sequence(service); 118 119 // 0x0000 "Service Record Handle" 120 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 121 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 122 123 // 0x0001 "Service Class ID List" 124 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 125 attribute = de_push_sequence(service); 126 { 127 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); 128 } 129 de_pop_sequence(service, attribute); 130 131 // 0x0004 "Protocol Descriptor List" 132 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 133 attribute = de_push_sequence(service); 134 { 135 uint8_t* l2cpProtocol = de_push_sequence(attribute); 136 { 137 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 138 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 139 } 140 de_pop_sequence(attribute, l2cpProtocol); 141 142 uint8_t* avProtocol = de_push_sequence(attribute); 143 { 144 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 145 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 146 } 147 de_pop_sequence(attribute, avProtocol); 148 } 149 de_pop_sequence(service, attribute); 150 151 // 0x0005 "Public Browse Group" 152 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 153 attribute = de_push_sequence(service); 154 { 155 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 156 } 157 de_pop_sequence(service, attribute); 158 159 // 0x0009 "Bluetooth Profile Descriptor List" 160 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 161 attribute = de_push_sequence(service); 162 { 163 uint8_t *a2dProfile = de_push_sequence(attribute); 164 { 165 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 166 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 167 } 168 de_pop_sequence(attribute, a2dProfile); 169 } 170 de_pop_sequence(service, attribute); 171 172 173 // 0x0100 "Service Name" 174 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 175 if (service_name){ 176 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 177 } else { 178 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_name), (uint8_t *) default_a2dp_source_service_name); 179 } 180 181 // 0x0100 "Provider Name" 182 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 183 if (service_provider_name){ 184 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 185 } else { 186 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_provider_name), (uint8_t *) default_a2dp_source_service_provider_name); 187 } 188 189 // 0x0311 "Supported Features" 190 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 191 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 192 } 193 194 static void a2dp_signaling_emit_reconfigured(uint16_t cid, uint8_t local_seid, uint8_t status){ 195 uint8_t event[7]; 196 int pos = 0; 197 event[pos++] = HCI_EVENT_A2DP_META; 198 event[pos++] = sizeof(event) - 2; 199 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 200 little_endian_store_16(event, pos, cid); 201 pos += 2; 202 event[pos++] = local_seid; 203 event[pos++] = status; 204 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 205 } 206 207 static void a2dp_source_discover_stream_endpoints(uint16_t avdtp_cid){ 208 a2dp_source_cid = avdtp_cid; 209 avdtp_source_discover_stream_endpoints(avdtp_cid); 210 } 211 212 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 213 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 214 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 215 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 216 217 218 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 if (connection->a2dp_source_stream_endpoint_configured) return; 225 a2dp_source_discover_stream_endpoints(avdtp_cid); 226 } 227 228 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 229 log_info("a2dp_source_set_config_timer_start cid 0%02x", avdtp_cid); 230 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 231 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 232 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 233 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 234 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 235 } 236 237 static void a2dp_source_set_config_timer_stop(void){ 238 log_info("a2dp_source_set_config_timer_stop"); 239 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 240 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 241 } 242 243 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 244 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 245 sc.active_remote_sep_index = 0; 246 num_remote_seps = 0; 247 memset(remote_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 248 connection->a2dp_source_discover_seps = false; 249 250 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 251 if (a2dp_source_outgoing_active(connection) && (a2dp_source_cid == connection->avdtp_cid)){ 252 log_info("discover seps"); 253 a2dp_source_discover_stream_endpoints(connection->avdtp_cid); 254 } else { 255 log_info("wait a bit, then discover seps"); 256 a2dp_source_set_config_timer_start(connection->avdtp_cid); 257 } 258 } 259 260 static void a2dp_discover_seps_with_next_waiting_connection(void){ 261 btstack_linked_list_iterator_t it; 262 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 263 while (btstack_linked_list_iterator_has_next(&it)){ 264 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 265 if (!next_connection->a2dp_source_discover_seps) continue; 266 a2dp_start_discovering_seps(next_connection); 267 } 268 } 269 270 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 271 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 272 avdtp_connection_t * avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); 273 btstack_assert(avdtp_connection != NULL); 274 if ((a2dp_source_cid == cid) && (avdtp_connection->a2dp_source_state == A2DP_W4_SET_CONFIGURATION)){ 275 // outgoing: discovery and config of remote sink sep successful, trigger stream open 276 avdtp_connection->a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 277 } else { 278 // incoming: accept cid, lookup local stream endpoint and wait for stream open 279 a2dp_source_cid = cid; 280 sc.local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 281 btstack_assert(sc.local_stream_endpoint != NULL); 282 avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 283 } 284 285 // config set: stop timer 286 a2dp_source_set_config_timer_stop(); 287 avdtp_connection->a2dp_source_stream_endpoint_configured = true; 288 } 289 290 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 291 UNUSED(channel); 292 UNUSED(size); 293 294 uint16_t cid; 295 avdtp_connection_t * connection; 296 297 uint8_t signal_identifier; 298 uint8_t status; 299 uint8_t local_seid; 300 uint8_t remote_seid; 301 302 if (packet_type != HCI_EVENT_PACKET) return; 303 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 304 305 switch (packet[2]){ 306 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 307 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 308 connection = avdtp_get_connection_for_avdtp_cid(cid); 309 btstack_assert(connection != NULL); 310 311 status = avdtp_subevent_signaling_connection_established_get_status(packet); 312 if (status != ERROR_CODE_SUCCESS){ 313 // notify about connection error only if we're initiator 314 if (a2dp_source_outgoing_active(connection) && (a2dp_source_cid == cid)){ 315 log_info("A2DP source signaling connection failed status 0x%02x", status); 316 outgoing_active = false; 317 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 318 } 319 break; 320 } 321 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 322 323 // notify app 324 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 325 326 // we already have a valid setup 327 if (connection->a2dp_source_stream_endpoint_configured) return; 328 329 // start discover seps now if: 330 // - outgoing active: signaling for outgoing connection 331 // - outgoing not active: incoming connection and no sep discover ongoing 332 333 log_info("outgoing_active %d, current avdtp cid 0x%02x, a2dp_source_state %d", a2dp_source_outgoing_active(connection), cid, connection->a2dp_source_state); 334 if ((a2dp_source_outgoing_active(connection) && (a2dp_source_cid == cid)) || (!a2dp_source_outgoing_active(connection) && (connection->a2dp_source_state == A2DP_IDLE))){ 335 a2dp_start_discovering_seps(connection); 336 } else { 337 // post-pone sep discovery 338 connection->a2dp_source_discover_seps = true; 339 } 340 break; 341 342 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 343 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 344 connection = avdtp_get_connection_for_avdtp_cid(cid); 345 btstack_assert(connection != NULL); 346 347 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 (connection->a2dp_source_state != A2DP_DISCOVER_SEPS) break; 369 370 if (num_remote_seps > 0){ 371 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 372 sc.active_remote_sep_index = 0; 373 connection->a2dp_source_have_config = false; 374 } else { 375 if (a2dp_source_outgoing_active(connection)){ 376 outgoing_active = false; 377 connection = avdtp_get_connection_for_avdtp_cid(cid); 378 btstack_assert(connection != NULL); 379 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 380 } 381 382 // continue 383 connection->a2dp_source_state = A2DP_CONNECTED; 384 a2dp_discover_seps_with_next_waiting_connection(); 385 } 386 break; 387 388 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 389 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 390 connection = avdtp_get_connection_for_avdtp_cid(cid); 391 btstack_assert(connection != NULL); 392 393 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 394 395 // forward codec capability 396 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 397 398 // select SEP if none configured yet 399 if (connection->a2dp_source_have_config == false){ 400 // find SBC stream endpoint 401 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 402 if (stream_endpoint != NULL){ 403 // choose SBC config params 404 avdtp_configuration_sbc_t configuration; 405 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 406 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 407 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 408 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 409 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 410 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 411 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 412 413 // and pre-select this endpoint 414 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 415 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 416 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 417 } 418 } 419 break; 420 421 // forward codec capability 422 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 423 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 424 connection = avdtp_get_connection_for_avdtp_cid(cid); 425 btstack_assert(connection != NULL); 426 427 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 428 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 429 break; 430 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 431 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 432 connection = avdtp_get_connection_for_avdtp_cid(cid); 433 btstack_assert(connection != NULL); 434 435 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 436 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 437 break; 438 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 439 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 440 connection = avdtp_get_connection_for_avdtp_cid(cid); 441 btstack_assert(connection != NULL); 442 443 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 444 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 445 break; 446 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 447 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 448 connection = avdtp_get_connection_for_avdtp_cid(cid); 449 btstack_assert(connection != NULL); 450 451 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 452 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 453 break; 454 455 // not forwarded 456 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 457 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 458 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 459 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 460 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 461 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 462 break; 463 464 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 465 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 466 connection = avdtp_get_connection_for_avdtp_cid(cid); 467 btstack_assert(connection != NULL); 468 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_state); 469 470 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 471 472 // store delay reporting capability 473 remote_seps[sc.active_remote_sep_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 474 475 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 476 break; 477 478 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 479 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 480 connection = avdtp_get_connection_for_avdtp_cid(cid); 481 btstack_assert(connection != NULL); 482 483 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 484 485 // forward capabilities done for endpoint 486 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 487 488 // endpoint was not suitable, check next one 489 sc.active_remote_sep_index++; 490 if (sc.active_remote_sep_index >= num_remote_seps){ 491 492 // emit 'all capabilities for all seps reported' 493 uint8_t event[6]; 494 uint8_t pos = 0; 495 event[pos++] = HCI_EVENT_A2DP_META; 496 event[pos++] = sizeof(event) - 2; 497 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 498 little_endian_store_16(event, pos, cid); 499 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 500 501 // do we have a valid config? 502 if (connection->a2dp_source_have_config){ 503 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 504 connection->a2dp_source_have_config = false; 505 break; 506 } 507 508 // we didn't find a suitable SBC stream endpoint, sorry. 509 if (a2dp_source_outgoing_active(connection)){ 510 outgoing_active = false; 511 connection = avdtp_get_connection_for_avdtp_cid(cid); 512 btstack_assert(connection != NULL); 513 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 514 } 515 connection->a2dp_source_state = A2DP_CONNECTED; 516 a2dp_discover_seps_with_next_waiting_connection(); 517 } 518 break; 519 520 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 521 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 522 connection = avdtp_get_connection_for_avdtp_cid(cid); 523 btstack_assert(connection != NULL); 524 525 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 526 break; 527 528 // forward codec configuration 529 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 530 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 531 a2dp_handle_received_configuration(packet, local_seid); 532 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 533 break; 534 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 535 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 536 a2dp_handle_received_configuration(packet, local_seid); 537 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 538 break; 539 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 540 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 541 a2dp_handle_received_configuration(packet, local_seid); 542 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 543 break; 544 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 545 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 546 a2dp_handle_received_configuration(packet, local_seid); 547 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 548 break; 549 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 550 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 551 a2dp_handle_received_configuration(packet, local_seid); 552 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 553 break; 554 555 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 556 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 557 break; 558 559 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 560 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 561 connection = avdtp_get_connection_for_avdtp_cid(cid); 562 btstack_assert(connection != NULL); 563 564 if (connection->a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 565 566 outgoing_active = false; 567 status = avdtp_subevent_streaming_connection_established_get_status(packet); 568 if (status != ERROR_CODE_SUCCESS){ 569 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 570 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 571 break; 572 } 573 574 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 575 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 576 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 577 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 578 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 579 break; 580 581 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 582 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 583 connection = avdtp_get_connection_for_avdtp_cid(cid); 584 btstack_assert(connection != NULL); 585 586 // reset discovery timer while remote is active 587 if (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) { 588 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(&a2dp_source_set_config_timer); 589 if ((avdtp_cid == 0) || (avdtp_cid != cid)) break; 590 log_info("Reset discovery timer"); 591 a2dp_source_set_config_timer_start(avdtp_cid); 592 break; 593 } 594 595 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 596 597 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_state, cid); 598 599 switch (connection->a2dp_source_state){ 600 case A2DP_GET_CAPABILITIES: 601 remote_seid = remote_seps[sc.active_remote_sep_index].seid; 602 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 603 avdtp_source_get_all_capabilities(cid, remote_seid); 604 return; 605 606 case A2DP_SET_CONFIGURATION: 607 remote_seid = sc.local_stream_endpoint->set_config_remote_seid; 608 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); 609 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 610 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); 611 return; 612 613 case A2DP_W2_OPEN_STREAM_WITH_SEID: 614 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); 615 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 616 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.local_stream_endpoint->remote_sep.seid); 617 break; 618 619 case A2DP_W2_RECONFIGURE_WITH_SEID: 620 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); 621 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), ERROR_CODE_SUCCESS); 622 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 623 break; 624 625 case A2DP_STREAMING_OPENED: 626 switch (signal_identifier){ 627 case AVDTP_SI_START: 628 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 629 break; 630 case AVDTP_SI_SUSPEND: 631 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 632 break; 633 case AVDTP_SI_ABORT: 634 case AVDTP_SI_CLOSE: 635 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 636 break; 637 default: 638 break; 639 } 640 break; 641 642 default: 643 break; 644 } 645 break; 646 647 case AVDTP_SUBEVENT_SIGNALING_REJECT: 648 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 649 connection = avdtp_get_connection_for_avdtp_cid(cid); 650 btstack_assert(connection != NULL); 651 652 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 653 654 connection->a2dp_source_state = A2DP_CONNECTED; 655 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 656 break; 657 658 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 659 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 660 connection = avdtp_get_connection_for_avdtp_cid(cid); 661 btstack_assert(connection != NULL); 662 663 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 664 665 connection->a2dp_source_state = A2DP_CONNECTED; 666 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 667 break; 668 669 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 670 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 671 connection = avdtp_get_connection_for_avdtp_cid(cid); 672 btstack_assert(connection != NULL); 673 674 connection->a2dp_source_state = A2DP_CONFIGURED; 675 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 676 break; 677 678 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 679 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 680 connection = avdtp_get_connection_for_avdtp_cid(cid); 681 btstack_assert(connection != NULL); 682 683 // connect/release are passed on to app 684 if (a2dp_source_cid == cid){ 685 connection->a2dp_source_stream_endpoint_configured = false; 686 sc.local_stream_endpoint = NULL; 687 688 connection->a2dp_source_state = A2DP_IDLE; 689 a2dp_source_cid = 0; 690 } 691 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 692 break; 693 694 default: 695 break; 696 } 697 } 698 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 699 btstack_assert(callback != NULL); 700 701 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 702 a2dp_source_packet_handler_user = callback; 703 } 704 705 void a2dp_source_init(void){ 706 (void) memset(&sc, 0, sizeof(avdtp_stream_endpoint_context_t)); 707 708 avdtp_source_init(); 709 } 710 711 void a2dp_source_deinit(void){ 712 avdtp_source_deinit(); 713 714 outgoing_active = false; 715 a2dp_source_cid = 0; 716 num_remote_seps = 0; 717 } 718 719 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 720 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 721 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 722 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 723 if (!stream_endpoint){ 724 return NULL; 725 } 726 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 727 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 728 codec_capabilities, codec_capabilities_len); 729 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 730 731 // store user codec configuration buffer 732 stream_endpoint->media_codec_type = media_codec_type; 733 stream_endpoint->media_codec_configuration_info = codec_configuration; 734 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 735 736 return stream_endpoint; 737 } 738 739 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 740 avdtp_source_finalize_stream_endpoint(stream_endpoint); 741 } 742 743 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 744 745 uint16_t outgoing_cid; 746 747 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 748 if (connection == NULL){ 749 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 750 if (status != ERROR_CODE_SUCCESS) { 751 // if there's already a connection for for remote addr, avdtp_source_connect fails, 752 // but the stream will get set-up nevertheless 753 return status; 754 } 755 outgoing_active = true; 756 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 757 btstack_assert(connection != NULL); 758 759 // setup state 760 connection->a2dp_source_state = A2DP_W4_CONNECTED; 761 a2dp_source_cid = outgoing_cid; 762 *avdtp_cid = outgoing_cid; 763 764 } else { 765 if (a2dp_source_outgoing_active(connection) || connection->a2dp_source_stream_endpoint_configured) { 766 return ERROR_CODE_COMMAND_DISALLOWED; 767 } 768 769 // check state 770 switch (connection->a2dp_source_state){ 771 case A2DP_IDLE: 772 case A2DP_CONNECTED: 773 // restart process e.g. if there no suitable stream endpoints or they had been in use 774 outgoing_active = true; 775 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 776 *avdtp_cid = connection->avdtp_cid; 777 a2dp_start_discovering_seps(connection); 778 break; 779 default: 780 return ERROR_CODE_COMMAND_DISALLOWED; 781 } 782 } 783 return ERROR_CODE_SUCCESS; 784 } 785 786 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 787 return avdtp_disconnect(avdtp_cid); 788 } 789 790 791 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 792 return avdtp_start_stream(avdtp_cid, local_seid); 793 } 794 795 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 796 return avdtp_suspend_stream(avdtp_cid, local_seid); 797 } 798 799 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 800 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 801 } 802 803 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 804 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 805 } 806 807 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){ 808 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 809 } 810 811 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){ 812 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 813 } 814 815 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 816 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 817 } 818 819 static uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 820 avdtp_media_codec_type_t codec_type) { 821 822 // lookup local stream endpoint 823 avdtp_stream_endpoint_t * local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 824 if (local_stream_endpoint == NULL){ 825 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 826 } 827 828 // lookup remote stream endpoint 829 avdtp_sep_t * remote_sep = NULL; 830 uint8_t i; 831 for (i=0;i<num_remote_seps;i++){ 832 if (remote_seps[i].seid == remote_seid){ 833 remote_sep = &remote_seps[i]; 834 } 835 } 836 if (remote_sep == NULL){ 837 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 838 } 839 840 // set media configuration 841 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 842 local_stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 843 local_stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 844 // remote seid to use 845 local_stream_endpoint->set_config_remote_seid = remote_seid; 846 // enable delay reporting if supported 847 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 848 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 849 } 850 851 // suitable Sink stream endpoint found, configure it 852 sc.local_stream_endpoint = local_stream_endpoint; 853 connection->a2dp_source_have_config = true; 854 855 return ERROR_CODE_SUCCESS; 856 } 857 858 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){ 859 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 860 if (connection == NULL){ 861 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 862 } 863 864 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 865 if (status != 0) { 866 return status; 867 } 868 // set config in reserved buffer 869 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 870 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 871 avdtp_config_sbc_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 872 873 return ERROR_CODE_SUCCESS; 874 } 875 876 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){ 877 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 878 if (connection == NULL){ 879 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 880 } 881 882 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 883 if (status != 0) { 884 return status; 885 } 886 887 // set config in reserved buffer 888 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 889 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 890 avdtp_config_mpeg_audio_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 891 892 return ERROR_CODE_SUCCESS; 893 } 894 895 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){ 896 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 897 if (connection == NULL){ 898 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 899 } 900 901 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 902 if (status != 0) { 903 return status; 904 } 905 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 906 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 907 avdtp_config_mpeg_aac_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 908 909 return ERROR_CODE_SUCCESS; 910 } 911 912 uint8_t a2dp_source_set_config_atrac(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_atrac_t * configuration){ 913 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 914 if (connection == NULL){ 915 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 916 } 917 918 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 919 if (status != 0) { 920 return status; 921 } 922 923 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 924 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 925 avdtp_config_atrac_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 926 927 return ERROR_CODE_SUCCESS; 928 } 929 930 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 931 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 932 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 933 if (connection == NULL){ 934 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 935 } 936 937 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 938 if (status != 0) { 939 return status; 940 } 941 942 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 943 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 944 945 return status; 946 } 947 948 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 949 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 950 if (connection == NULL){ 951 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 952 } 953 954 if (connection->a2dp_source_state != A2DP_STREAMING_OPENED) { 955 return ERROR_CODE_COMMAND_DISALLOWED; 956 } 957 958 btstack_assert(sc.local_stream_endpoint != NULL); 959 960 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 961 962 avdtp_media_codec_type_t codec_type = sc.local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 963 uint8_t codec_info_len; 964 switch (codec_type){ 965 case AVDTP_CODEC_SBC: 966 codec_info_len = 4; 967 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 968 avdtp_config_sbc_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 969 break; 970 case AVDTP_CODEC_MPEG_1_2_AUDIO: 971 codec_info_len = 4; 972 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 973 avdtp_config_mpeg_audio_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 974 break; 975 case AVDTP_CODEC_MPEG_2_4_AAC: 976 codec_info_len = 6; 977 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 978 avdtp_config_mpeg_aac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 979 break; 980 case AVDTP_CODEC_ATRAC_FAMILY: 981 codec_info_len = 7; 982 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 983 avdtp_config_atrac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 984 break; 985 default: 986 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 987 } 988 989 avdtp_capabilities_t new_configuration; 990 new_configuration.media_codec.media_type = AVDTP_AUDIO; 991 new_configuration.media_codec.media_codec_type = codec_type; 992 new_configuration.media_codec.media_codec_information_len = codec_info_len; 993 new_configuration.media_codec.media_codec_information = sc.local_stream_endpoint->media_codec_info; 994 995 // start reconfigure 996 connection->a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 997 998 return avdtp_source_reconfigure( 999 avdtp_cid, 1000 avdtp_stream_endpoint_seid(sc.local_stream_endpoint), 1001 sc.local_stream_endpoint->remote_sep.seid, 1002 1 << AVDTP_MEDIA_CODEC, 1003 new_configuration 1004 ); 1005 } 1006