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 static const char * default_a2dp_source_service_name = "BTstack A2DP Source Service"; 70 static const char * default_a2dp_source_service_provider_name = "BTstack A2DP Source Service Provider"; 71 72 static btstack_packet_handler_t a2dp_source_packet_handler_user; 73 74 // config process - singletons using sep_discovery_cid is used as mutex 75 static uint16_t sep_discovery_cid; 76 static uint16_t sep_discovery_count; 77 static uint16_t sep_discovery_index; 78 static avdtp_sep_t sep_discovery_seps[AVDTP_MAX_SEP_NUM]; 79 static btstack_timer_source_t a2dp_source_set_config_timer; 80 81 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 82 static void a2dp_discover_seps_with_next_waiting_connection(void); 83 84 static void a2dp_source_streaming_emit_connection_failed(avdtp_connection_t *connection, uint8_t status) { 85 uint8_t event[14]; 86 int pos = 0; 87 event[pos++] = HCI_EVENT_A2DP_META; 88 event[pos++] = sizeof(event) - 2; 89 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 90 little_endian_store_16(event, pos, connection->avdtp_cid); 91 pos += 2; 92 reverse_bd_addr(connection->remote_addr, &event[pos]); 93 pos += 6; 94 event[pos++] = 0; 95 event[pos++] = 0; 96 event[pos++] = status; 97 98 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 99 } 100 101 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){ 102 uint8_t* attribute; 103 de_create_sequence(service); 104 105 // 0x0000 "Service Record Handle" 106 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 107 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 108 109 // 0x0001 "Service Class ID List" 110 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 111 attribute = de_push_sequence(service); 112 { 113 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); 114 } 115 de_pop_sequence(service, attribute); 116 117 // 0x0004 "Protocol Descriptor List" 118 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 119 attribute = de_push_sequence(service); 120 { 121 uint8_t* l2cpProtocol = de_push_sequence(attribute); 122 { 123 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 124 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 125 } 126 de_pop_sequence(attribute, l2cpProtocol); 127 128 uint8_t* avProtocol = de_push_sequence(attribute); 129 { 130 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 131 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 132 } 133 de_pop_sequence(attribute, avProtocol); 134 } 135 de_pop_sequence(service, attribute); 136 137 // 0x0005 "Public Browse Group" 138 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 139 attribute = de_push_sequence(service); 140 { 141 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 142 } 143 de_pop_sequence(service, attribute); 144 145 // 0x0009 "Bluetooth Profile Descriptor List" 146 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 147 attribute = de_push_sequence(service); 148 { 149 uint8_t *a2dProfile = de_push_sequence(attribute); 150 { 151 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 152 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 153 } 154 de_pop_sequence(attribute, a2dProfile); 155 } 156 de_pop_sequence(service, attribute); 157 158 159 // 0x0100 "Service Name" 160 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 161 if (service_name){ 162 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 163 } else { 164 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_name), (uint8_t *) default_a2dp_source_service_name); 165 } 166 167 // 0x0100 "Provider Name" 168 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 169 if (service_provider_name){ 170 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 171 } else { 172 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_provider_name), (uint8_t *) default_a2dp_source_service_provider_name); 173 } 174 175 // 0x0311 "Supported Features" 176 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 177 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 178 } 179 180 static void a2dp_signaling_emit_reconfigured(uint16_t cid, uint8_t local_seid, uint8_t status){ 181 uint8_t event[7]; 182 int pos = 0; 183 event[pos++] = HCI_EVENT_A2DP_META; 184 event[pos++] = sizeof(event) - 2; 185 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 186 little_endian_store_16(event, pos, cid); 187 pos += 2; 188 event[pos++] = local_seid; 189 event[pos++] = status; 190 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 191 } 192 193 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 194 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 195 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 196 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 197 198 if (connection == NULL) { 199 log_info("a2dp_discover_seps_with_next_waiting_connection"); 200 a2dp_discover_seps_with_next_waiting_connection(); 201 return; 202 } 203 204 if (connection->a2dp_source_stream_endpoint_configured) return; 205 avdtp_source_discover_stream_endpoints(avdtp_cid); 206 } 207 208 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 209 log_info("a2dp_source_set_config_timer_start cid 0%02x", avdtp_cid); 210 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 211 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 212 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 213 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 214 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 215 } 216 217 static void a2dp_source_set_config_timer_stop(void){ 218 log_info("a2dp_source_set_config_timer_stop"); 219 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 220 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 221 } 222 223 // Discover seps, both incoming and outgoing 224 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 225 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 226 connection->a2dp_source_discover_seps = false; 227 228 sep_discovery_index = 0; 229 sep_discovery_count = 0; 230 memset(sep_discovery_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 231 sep_discovery_cid = connection->avdtp_cid; 232 233 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 234 if (connection->a2dp_source_outgoing_active){ 235 log_info("discover seps"); 236 avdtp_source_discover_stream_endpoints(connection->avdtp_cid); 237 } else { 238 log_info("wait a bit, then discover seps"); 239 a2dp_source_set_config_timer_start(connection->avdtp_cid); 240 } 241 } 242 243 static void a2dp_discover_seps_with_next_waiting_connection(void){ 244 btstack_assert(sep_discovery_cid == 0); 245 btstack_linked_list_iterator_t it; 246 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 247 while (btstack_linked_list_iterator_has_next(&it)){ 248 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 249 if (!next_connection->a2dp_source_discover_seps) continue; 250 a2dp_start_discovering_seps(next_connection); 251 } 252 } 253 254 static void a2dp_source_ready_for_sep_discovery(avdtp_connection_t * connection){ 255 // start discover seps now if: 256 // - outgoing active: signaling for outgoing connection 257 // - outgoing not active: incoming connection and no sep discover ongoing 258 259 // sep discovery active? 260 if (sep_discovery_cid == 0){ 261 a2dp_start_discovering_seps(connection); 262 } else { 263 // post-pone sep discovery 264 connection->a2dp_source_discover_seps = true; 265 } 266 } 267 268 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 269 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 270 avdtp_connection_t *avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); 271 btstack_assert(avdtp_connection != NULL); 272 avdtp_connection->a2dp_source_local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 273 // bail out if local seid invalid 274 if (!avdtp_connection->a2dp_source_local_stream_endpoint) return; 275 276 // stop timer 277 if (sep_discovery_cid == cid) { 278 a2dp_source_set_config_timer_stop(); 279 sep_discovery_cid = 0; 280 } 281 282 avdtp_connection->a2dp_source_stream_endpoint_configured = true; 283 284 switch (avdtp_connection->a2dp_source_state) { 285 case A2DP_W4_SET_CONFIGURATION: 286 // outgoing: discovery and config of remote sink sep successful, trigger stream open 287 avdtp_connection->a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 288 break; 289 case A2DP_DISCOVER_SEPS: 290 case A2DP_GET_CAPABILITIES: 291 case A2DP_W2_GET_ALL_CAPABILITIES: 292 case A2DP_DISCOVERY_DONE: 293 case A2DP_W4_GET_CONFIGURATION: 294 // incoming: wait for stream open 295 avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 296 break; 297 default: 298 // wait for configuration after sending reconfigure - keep state 299 break; 300 } 301 } 302 303 static void a2dp_source_set_config(avdtp_connection_t * connection){ 304 uint8_t remote_seid = connection->a2dp_source_local_stream_endpoint->set_config_remote_seid; 305 log_info("A2DP initiate set configuration locally and wait for response ... local seid 0x%02x, remote seid 0x%02x", avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), remote_seid); 306 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 307 avdtp_source_set_configuration(connection->avdtp_cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), remote_seid, connection->a2dp_source_local_stream_endpoint->remote_configuration_bitmap, connection->a2dp_source_local_stream_endpoint->remote_configuration); 308 } 309 310 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 311 UNUSED(channel); 312 UNUSED(size); 313 314 uint16_t cid; 315 avdtp_connection_t * connection; 316 317 uint8_t signal_identifier; 318 uint8_t status; 319 uint8_t local_seid; 320 uint8_t remote_seid; 321 322 if (packet_type != HCI_EVENT_PACKET) return; 323 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 324 325 switch (packet[2]){ 326 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 327 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 328 connection = avdtp_get_connection_for_avdtp_cid(cid); 329 btstack_assert(connection != NULL); 330 331 status = avdtp_subevent_signaling_connection_established_get_status(packet); 332 if (status != ERROR_CODE_SUCCESS){ 333 // notify about connection error only if we're initiator 334 if (connection->a2dp_source_outgoing_active){ 335 log_info("A2DP source signaling connection failed status 0x%02x", status); 336 connection->a2dp_source_outgoing_active = false; 337 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 338 } 339 break; 340 } 341 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 342 connection->a2dp_source_state = A2DP_CONNECTED; 343 344 // notify app 345 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 346 347 // continue 348 a2dp_source_ready_for_sep_discovery(connection); 349 break; 350 351 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 352 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 353 connection = avdtp_get_connection_for_avdtp_cid(cid); 354 btstack_assert(connection != NULL); 355 356 if (connection->a2dp_source_state == A2DP_DISCOVER_SEPS) { 357 avdtp_sep_t sep; 358 memset(&sep, 0, sizeof(avdtp_sep_t)); 359 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 360 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 361 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 362 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 363 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 364 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 365 sep_discovery_count); 366 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 367 sep_discovery_seps[sep_discovery_count++] = sep; 368 } 369 } 370 break; 371 372 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 373 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 374 connection = avdtp_get_connection_for_avdtp_cid(cid); 375 btstack_assert(connection != NULL); 376 377 if (connection->a2dp_source_state != A2DP_DISCOVER_SEPS) break; 378 379 if (sep_discovery_count > 0){ 380 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 381 sep_discovery_index = 0; 382 connection->a2dp_source_have_config = false; 383 } else { 384 if (connection->a2dp_source_outgoing_active){ 385 connection->a2dp_source_outgoing_active = false; 386 connection = avdtp_get_connection_for_avdtp_cid(cid); 387 btstack_assert(connection != NULL); 388 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 389 } 390 391 // continue 392 connection->a2dp_source_state = A2DP_CONNECTED; 393 sep_discovery_cid = 0; 394 a2dp_discover_seps_with_next_waiting_connection(); 395 } 396 break; 397 398 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 399 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 400 connection = avdtp_get_connection_for_avdtp_cid(cid); 401 btstack_assert(connection != NULL); 402 403 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 404 405 // forward codec capability 406 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 407 408 #ifndef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 409 // select SEP if none configured yet 410 if (connection->a2dp_source_have_config == false){ 411 // find SBC stream endpoint 412 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 413 if (stream_endpoint != NULL){ 414 // choose SBC config params 415 avdtp_configuration_sbc_t configuration; 416 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 417 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 418 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 419 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 420 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 421 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 422 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 423 424 // and pre-select this endpoint 425 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 426 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 427 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 428 } 429 } 430 #endif 431 break; 432 433 // forward codec capability 434 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 435 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 436 connection = avdtp_get_connection_for_avdtp_cid(cid); 437 btstack_assert(connection != NULL); 438 439 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 440 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 441 break; 442 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 443 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 444 connection = avdtp_get_connection_for_avdtp_cid(cid); 445 btstack_assert(connection != NULL); 446 447 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 448 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 449 break; 450 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 451 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 452 connection = avdtp_get_connection_for_avdtp_cid(cid); 453 btstack_assert(connection != NULL); 454 455 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 456 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 457 break; 458 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 459 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 460 connection = avdtp_get_connection_for_avdtp_cid(cid); 461 btstack_assert(connection != NULL); 462 463 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 464 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 465 break; 466 467 // not forwarded 468 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 469 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 470 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 471 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 472 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 473 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 474 break; 475 476 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 477 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 478 connection = avdtp_get_connection_for_avdtp_cid(cid); 479 btstack_assert(connection != NULL); 480 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_state); 481 482 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 483 484 // store delay reporting capability 485 sep_discovery_seps[sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 486 487 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 488 break; 489 490 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 491 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 492 connection = avdtp_get_connection_for_avdtp_cid(cid); 493 btstack_assert(connection != NULL); 494 495 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 496 497 // forward capabilities done for endpoint 498 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 499 500 // endpoint was not suitable, check next one 501 sep_discovery_index++; 502 if (sep_discovery_index >= sep_discovery_count){ 503 504 // emit 'all capabilities for all seps reported' 505 uint8_t event[6]; 506 uint8_t pos = 0; 507 event[pos++] = HCI_EVENT_A2DP_META; 508 event[pos++] = sizeof(event) - 2; 509 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 510 little_endian_store_16(event, pos, cid); 511 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 512 513 // do we have a valid config? 514 if (connection->a2dp_source_have_config){ 515 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 516 connection->a2dp_source_have_config = false; 517 break; 518 } 519 520 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 521 connection->a2dp_source_state = A2DP_DISCOVERY_DONE; 522 // TODO call a2dp_discover_seps_with_next_waiting_connection? 523 break; 524 #else 525 // we didn't find a suitable SBC stream endpoint, sorry. 526 if (connection->a2dp_source_outgoing_active){ 527 connection->a2dp_source_outgoing_active = false; 528 connection = avdtp_get_connection_for_avdtp_cid(cid); 529 btstack_assert(connection != NULL); 530 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 531 } 532 connection->a2dp_source_state = A2DP_CONNECTED; 533 sep_discovery_cid = 0; 534 a2dp_discover_seps_with_next_waiting_connection(); 535 #endif 536 } 537 break; 538 539 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 540 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 541 connection = avdtp_get_connection_for_avdtp_cid(cid); 542 btstack_assert(connection != NULL); 543 544 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 545 break; 546 547 // forward codec configuration 548 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 549 local_seid = avdtp_subevent_signaling_media_codec_sbc_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_SBC_CONFIGURATION); 552 break; 553 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 554 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_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_MPEG_AUDIO_CONFIGURATION); 557 break; 558 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 559 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_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_MPEG_AAC_CONFIGURATION); 562 break; 563 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 564 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 565 a2dp_handle_received_configuration(packet, local_seid); 566 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 567 break; 568 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 569 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 570 a2dp_handle_received_configuration(packet, local_seid); 571 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 572 break; 573 574 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 575 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 576 break; 577 578 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 579 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 580 connection = avdtp_get_connection_for_avdtp_cid(cid); 581 btstack_assert(connection != NULL); 582 583 if (connection->a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 584 585 connection->a2dp_source_outgoing_active = false; 586 status = avdtp_subevent_streaming_connection_established_get_status(packet); 587 if (status != ERROR_CODE_SUCCESS){ 588 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 589 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 590 break; 591 } 592 593 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 594 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 595 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 596 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 597 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 598 break; 599 600 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 601 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 602 connection = avdtp_get_connection_for_avdtp_cid(cid); 603 btstack_assert(connection != NULL); 604 605 // reset discovery timer while remote is active for current cid 606 if ((avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && (cid == sep_discovery_cid)){ 607 log_info("Reset discovery timer"); 608 a2dp_source_set_config_timer_start(sep_discovery_cid); 609 break; 610 } 611 612 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 613 614 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_state, cid); 615 616 switch (connection->a2dp_source_state){ 617 case A2DP_GET_CAPABILITIES: 618 remote_seid = sep_discovery_seps[sep_discovery_index].seid; 619 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 620 avdtp_source_get_all_capabilities(cid, remote_seid); 621 return; 622 623 case A2DP_SET_CONFIGURATION: 624 a2dp_source_set_config(connection); 625 return; 626 627 case A2DP_W2_OPEN_STREAM_WITH_SEID: 628 log_info("A2DP open stream ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), connection->a2dp_source_local_stream_endpoint->remote_sep.seid); 629 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 630 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), connection->a2dp_source_local_stream_endpoint->remote_sep.seid); 631 break; 632 633 case A2DP_W2_RECONFIGURE_WITH_SEID: 634 log_info("A2DP reconfigured ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), connection->a2dp_source_local_stream_endpoint->remote_sep.seid); 635 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), ERROR_CODE_SUCCESS); 636 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 637 break; 638 639 case A2DP_STREAMING_OPENED: 640 switch (signal_identifier){ 641 case AVDTP_SI_START: 642 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 643 break; 644 case AVDTP_SI_SUSPEND: 645 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 646 break; 647 case AVDTP_SI_ABORT: 648 case AVDTP_SI_CLOSE: 649 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 650 break; 651 default: 652 break; 653 } 654 break; 655 656 default: 657 break; 658 } 659 break; 660 661 case AVDTP_SUBEVENT_SIGNALING_REJECT: 662 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 663 connection = avdtp_get_connection_for_avdtp_cid(cid); 664 btstack_assert(connection != NULL); 665 666 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 667 668 switch (connection->a2dp_source_state) { 669 case A2DP_W2_RECONFIGURE_WITH_SEID: 670 log_info("A2DP reconfigure failed ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), connection->a2dp_source_local_stream_endpoint->remote_sep.seid); 671 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), ERROR_CODE_UNSPECIFIED_ERROR); 672 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 673 break; 674 default: 675 connection->a2dp_source_state = A2DP_CONNECTED; 676 break; 677 } 678 679 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 680 break; 681 682 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 683 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 684 connection = avdtp_get_connection_for_avdtp_cid(cid); 685 btstack_assert(connection != NULL); 686 687 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 688 689 connection->a2dp_source_state = A2DP_CONNECTED; 690 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 691 break; 692 693 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 694 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 695 connection = avdtp_get_connection_for_avdtp_cid(cid); 696 btstack_assert(connection != NULL); 697 698 connection->a2dp_source_state = A2DP_CONFIGURED; 699 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 700 break; 701 702 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 703 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 704 connection = avdtp_get_connection_for_avdtp_cid(cid); 705 btstack_assert(connection != NULL); 706 707 // connect/release are passed on to app 708 if (sep_discovery_cid == cid){ 709 a2dp_source_set_config_timer_stop(); 710 connection->a2dp_source_stream_endpoint_configured = false; 711 connection->a2dp_source_local_stream_endpoint = NULL; 712 713 connection->a2dp_source_state = A2DP_IDLE; 714 sep_discovery_cid = 0; 715 } 716 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 717 break; 718 719 default: 720 break; 721 } 722 } 723 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 724 btstack_assert(callback != NULL); 725 726 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 727 a2dp_source_packet_handler_user = callback; 728 } 729 730 void a2dp_source_init(void){ 731 avdtp_source_init(); 732 } 733 734 void a2dp_source_deinit(void){ 735 avdtp_source_deinit(); 736 sep_discovery_count = 0; 737 } 738 739 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 740 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 741 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 742 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 743 if (!stream_endpoint){ 744 return NULL; 745 } 746 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 747 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 748 codec_capabilities, codec_capabilities_len); 749 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 750 751 // store user codec configuration buffer 752 stream_endpoint->media_codec_type = media_codec_type; 753 stream_endpoint->media_codec_configuration_info = codec_configuration; 754 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 755 756 return stream_endpoint; 757 } 758 759 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 760 avdtp_source_finalize_stream_endpoint(stream_endpoint); 761 } 762 763 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 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 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 776 btstack_assert(connection != NULL); 777 778 // setup state 779 connection->a2dp_source_outgoing_active = true; 780 connection->a2dp_source_state = A2DP_W4_CONNECTED; 781 *avdtp_cid = outgoing_cid; 782 783 } else { 784 if (connection->a2dp_source_outgoing_active || connection->a2dp_source_stream_endpoint_configured) { 785 return ERROR_CODE_COMMAND_DISALLOWED; 786 } 787 788 // check state 789 switch (connection->a2dp_source_state){ 790 case A2DP_IDLE: 791 case A2DP_CONNECTED: 792 // restart process e.g. if there no suitable stream endpoints or they had been in use 793 connection->a2dp_source_outgoing_active = true; 794 *avdtp_cid = connection->avdtp_cid; 795 a2dp_source_ready_for_sep_discovery(connection); 796 break; 797 default: 798 return ERROR_CODE_COMMAND_DISALLOWED; 799 } 800 } 801 return ERROR_CODE_SUCCESS; 802 } 803 804 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 805 return avdtp_disconnect(avdtp_cid); 806 } 807 808 809 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 810 return avdtp_start_stream(avdtp_cid, local_seid); 811 } 812 813 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 814 return avdtp_suspend_stream(avdtp_cid, local_seid); 815 } 816 817 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 818 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 819 } 820 821 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 822 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 823 } 824 825 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){ 826 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 827 } 828 829 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){ 830 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 831 } 832 833 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 834 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 835 } 836 837 static uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 838 avdtp_media_codec_type_t codec_type) { 839 840 // check state 841 switch (connection->a2dp_source_state){ 842 case A2DP_DISCOVERY_DONE: 843 case A2DP_GET_CAPABILITIES: 844 break; 845 default: 846 return ERROR_CODE_COMMAND_DISALLOWED; 847 } 848 849 // lookup local stream endpoint 850 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 851 if (stream_endpoint == NULL){ 852 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 853 } 854 855 // lookup remote stream endpoint 856 avdtp_sep_t * remote_sep = NULL; 857 uint8_t i; 858 for (i=0; i < sep_discovery_count; i++){ 859 if (sep_discovery_seps[i].seid == remote_seid){ 860 remote_sep = &sep_discovery_seps[i]; 861 } 862 } 863 if (remote_sep == NULL){ 864 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 865 } 866 867 // set media configuration 868 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 869 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 870 stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 871 // remote seid to use 872 stream_endpoint->set_config_remote_seid = remote_seid; 873 // enable delay reporting if supported 874 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 875 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 876 } 877 878 // suitable Sink stream endpoint found, configure it 879 connection->a2dp_source_local_stream_endpoint = stream_endpoint; 880 connection->a2dp_source_have_config = true; 881 882 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 883 // continue outgoing configuration 884 if (connection->a2dp_source_state == A2DP_DISCOVERY_DONE){ 885 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 886 } 887 #endif 888 889 return ERROR_CODE_SUCCESS; 890 } 891 892 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){ 893 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 894 if (connection == NULL){ 895 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 896 } 897 898 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 899 if (status != 0) { 900 return status; 901 } 902 // set config in reserved buffer 903 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 904 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 905 avdtp_config_sbc_store(connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 906 907 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 908 a2dp_source_set_config(connection); 909 #endif 910 911 return ERROR_CODE_SUCCESS; 912 } 913 914 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){ 915 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 916 if (connection == NULL){ 917 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 918 } 919 920 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 921 if (status != 0) { 922 return status; 923 } 924 925 // set config in reserved buffer 926 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *)connection->a2dp_source_local_stream_endpoint->media_codec_info; 927 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 928 avdtp_config_mpeg_audio_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 929 930 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 931 a2dp_source_set_config(connection); 932 #endif 933 934 return ERROR_CODE_SUCCESS; 935 } 936 937 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){ 938 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 939 if (connection == NULL){ 940 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 941 } 942 943 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 944 if (status != 0) { 945 return status; 946 } 947 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 948 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 949 avdtp_config_mpeg_aac_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 950 951 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 952 a2dp_source_set_config(connection); 953 #endif 954 955 return ERROR_CODE_SUCCESS; 956 } 957 958 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){ 959 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 960 if (connection == NULL){ 961 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 962 } 963 964 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 965 if (status != 0) { 966 return status; 967 } 968 969 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 970 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 971 avdtp_config_atrac_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 972 973 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 974 a2dp_source_set_config(connection); 975 #endif 976 977 return ERROR_CODE_SUCCESS; 978 } 979 980 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 981 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 982 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 983 if (connection == NULL){ 984 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 985 } 986 987 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 988 if (status != 0) { 989 return status; 990 } 991 992 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 993 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 994 995 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 996 a2dp_source_set_config(connection); 997 #endif 998 999 return status; 1000 } 1001 1002 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 1003 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 1004 if (connection == NULL){ 1005 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1006 } 1007 1008 if (connection->a2dp_source_state != A2DP_STREAMING_OPENED) { 1009 return ERROR_CODE_COMMAND_DISALLOWED; 1010 } 1011 1012 btstack_assert(connection->a2dp_source_local_stream_endpoint != NULL); 1013 1014 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 1015 1016 avdtp_media_codec_type_t codec_type = connection->a2dp_source_local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 1017 uint8_t codec_info_len; 1018 switch (codec_type){ 1019 case AVDTP_CODEC_SBC: 1020 codec_info_len = 4; 1021 (void)memcpy(connection->a2dp_source_local_stream_endpoint->media_codec_info, connection->a2dp_source_local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1022 avdtp_config_sbc_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1023 break; 1024 case AVDTP_CODEC_MPEG_1_2_AUDIO: 1025 codec_info_len = 4; 1026 (void)memcpy(connection->a2dp_source_local_stream_endpoint->media_codec_info, connection->a2dp_source_local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1027 avdtp_config_mpeg_audio_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1028 break; 1029 case AVDTP_CODEC_MPEG_2_4_AAC: 1030 codec_info_len = 6; 1031 (void)memcpy(connection->a2dp_source_local_stream_endpoint->media_codec_info, connection->a2dp_source_local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1032 avdtp_config_mpeg_aac_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1033 break; 1034 case AVDTP_CODEC_ATRAC_FAMILY: 1035 codec_info_len = 7; 1036 (void)memcpy(connection->a2dp_source_local_stream_endpoint->media_codec_info, connection->a2dp_source_local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1037 avdtp_config_atrac_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1038 break; 1039 default: 1040 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1041 } 1042 1043 avdtp_capabilities_t new_configuration; 1044 new_configuration.media_codec.media_type = AVDTP_AUDIO; 1045 new_configuration.media_codec.media_codec_type = codec_type; 1046 new_configuration.media_codec.media_codec_information_len = codec_info_len; 1047 new_configuration.media_codec.media_codec_information = connection->a2dp_source_local_stream_endpoint->media_codec_info; 1048 1049 // start reconfigure 1050 connection->a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 1051 1052 return avdtp_source_reconfigure( 1053 avdtp_cid, 1054 avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), 1055 connection->a2dp_source_local_stream_endpoint->remote_sep.seid, 1056 1 << AVDTP_MEDIA_CODEC, 1057 new_configuration 1058 ); 1059 } 1060