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 BLUEKITCHEN 25 * GMBH 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.h" 61 #include "classic/a2dp_source.h" 62 #include "classic/avdtp_source.h" 63 #include "classic/avdtp_util.h" 64 #include "classic/sdp_util.h" 65 #include "l2cap.h" 66 #include "a2dp.h" 67 68 #define AVDTP_MAX_SEP_NUM 10 69 #define A2DP_SET_CONFIG_DELAY_MS 200 70 71 static const char * a2dp_default_source_service_name = "BTstack A2DP Source Service"; 72 static const char * a2dp_default_source_service_provider_name = "BTstack A2DP Source Service Provider"; 73 74 static uint8_t (*a2dp_source_media_config_validator)(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size); 75 76 // config process - singletons using sep_discovery_cid is used as mutex 77 static uint16_t a2dp_source_sep_discovery_cid; 78 static uint16_t a2dp_source_sep_discovery_count; 79 static uint16_t a2dp_source_sep_discovery_index; 80 static avdtp_sep_t a2dp_source_sep_discovery_seps[AVDTP_MAX_SEP_NUM]; 81 static btstack_timer_source_t a2dp_source_set_config_timer; 82 static bool a2dp_source_set_config_timer_active; 83 84 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 85 static void a2dp_discover_seps_with_next_waiting_connection(void); 86 87 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){ 88 uint8_t* attribute; 89 de_create_sequence(service); 90 91 // 0x0000 "Service Record Handle" 92 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 93 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 94 95 // 0x0001 "Service Class ID List" 96 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 97 attribute = de_push_sequence(service); 98 { 99 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); 100 } 101 de_pop_sequence(service, attribute); 102 103 // 0x0004 "Protocol Descriptor List" 104 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 105 attribute = de_push_sequence(service); 106 { 107 uint8_t* l2cpProtocol = de_push_sequence(attribute); 108 { 109 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 110 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 111 } 112 de_pop_sequence(attribute, l2cpProtocol); 113 114 uint8_t* avProtocol = de_push_sequence(attribute); 115 { 116 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 117 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 118 } 119 de_pop_sequence(attribute, avProtocol); 120 } 121 de_pop_sequence(service, attribute); 122 123 // 0x0005 "Public Browse Group" 124 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 125 attribute = de_push_sequence(service); 126 { 127 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 128 } 129 de_pop_sequence(service, attribute); 130 131 // 0x0009 "Bluetooth Profile Descriptor List" 132 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 133 attribute = de_push_sequence(service); 134 { 135 uint8_t *a2dProfile = de_push_sequence(attribute); 136 { 137 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 138 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 139 } 140 de_pop_sequence(attribute, a2dProfile); 141 } 142 de_pop_sequence(service, attribute); 143 144 145 // 0x0100 "Service Name" 146 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 147 if (service_name){ 148 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 149 } else { 150 de_add_data(service, DE_STRING, strlen(a2dp_default_source_service_name), (uint8_t *) a2dp_default_source_service_name); 151 } 152 153 // 0x0100 "Provider Name" 154 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 155 if (service_provider_name){ 156 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 157 } else { 158 de_add_data(service, DE_STRING, strlen(a2dp_default_source_service_provider_name), (uint8_t *) a2dp_default_source_service_provider_name); 159 } 160 161 // 0x0311 "Supported Features" 162 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 163 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 164 } 165 166 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 167 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 168 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 169 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 170 a2dp_source_set_config_timer_active = false; 171 172 log_info("Set Config timer fired, avdtp_cid 0x%02x", avdtp_cid); 173 174 if (connection == NULL) { 175 a2dp_discover_seps_with_next_waiting_connection(); 176 return; 177 } 178 179 if (connection->a2dp_source_stream_endpoint_configured) return; 180 avdtp_source_discover_stream_endpoints(avdtp_cid); 181 } 182 183 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 184 log_info("Set Config timer start for cid 0%02x", avdtp_cid); 185 a2dp_source_set_config_timer_active = true; 186 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 187 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 188 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 189 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 190 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 191 } 192 193 static void a2dp_source_set_config_timer_restart(void){ 194 log_info("Set Config timer restart"); 195 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 196 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 197 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 198 } 199 200 static void a2dp_source_set_config_timer_stop(void){ 201 if (a2dp_source_set_config_timer_active == false) return; 202 log_info("Set Config timer stop"); 203 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 204 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 205 a2dp_source_set_config_timer_active = false; 206 } 207 208 // Discover seps, both incoming and outgoing 209 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 210 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 211 connection->a2dp_source_discover_seps = false; 212 213 a2dp_source_sep_discovery_index = 0; 214 a2dp_source_sep_discovery_count = 0; 215 memset(a2dp_source_sep_discovery_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 216 a2dp_source_sep_discovery_cid = connection->avdtp_cid; 217 218 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 219 if (connection->a2dp_source_outgoing_active){ 220 log_info("discover seps"); 221 avdtp_source_discover_stream_endpoints(connection->avdtp_cid); 222 } else { 223 log_info("wait a bit, then discover seps"); 224 a2dp_source_set_config_timer_start(connection->avdtp_cid); 225 } 226 } 227 228 static void a2dp_discover_seps_with_next_waiting_connection(void){ 229 btstack_assert(a2dp_source_sep_discovery_cid == 0); 230 btstack_linked_list_iterator_t it; 231 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 232 while (btstack_linked_list_iterator_has_next(&it)){ 233 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 234 if (!next_connection->a2dp_source_discover_seps) continue; 235 a2dp_start_discovering_seps(next_connection); 236 } 237 } 238 239 static void a2dp_source_ready_for_sep_discovery(avdtp_connection_t * connection){ 240 // start discover seps now if: 241 // - outgoing active: signaling for outgoing connection 242 // - outgoing not active: incoming connection and no sep discover ongoing 243 244 // sep discovery active? 245 if (a2dp_source_sep_discovery_cid == 0){ 246 a2dp_start_discovering_seps(connection); 247 } else { 248 // post-pone sep discovery 249 connection->a2dp_source_discover_seps = true; 250 } 251 } 252 253 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 254 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 255 avdtp_connection_t *avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); 256 btstack_assert(avdtp_connection != NULL); 257 avdtp_connection->a2dp_source_local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 258 // bail out if local seid invalid 259 if (!avdtp_connection->a2dp_source_local_stream_endpoint) return; 260 261 // stop timer 262 if (a2dp_source_sep_discovery_cid == cid) { 263 a2dp_source_set_config_timer_stop(); 264 a2dp_source_sep_discovery_cid = 0; 265 } 266 267 avdtp_connection->a2dp_source_stream_endpoint_configured = true; 268 269 switch (avdtp_connection->a2dp_source_state) { 270 case A2DP_W4_SET_CONFIGURATION: 271 // outgoing: discovery and config of remote sink sep successful, trigger stream open 272 avdtp_connection->a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 273 break; 274 case A2DP_DISCOVER_SEPS: 275 case A2DP_GET_CAPABILITIES: 276 case A2DP_W2_GET_ALL_CAPABILITIES: 277 case A2DP_DISCOVERY_DONE: 278 case A2DP_W4_GET_CONFIGURATION: 279 // incoming: wait for stream open 280 avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 281 break; 282 default: 283 // wait for configuration after sending reconfigure - keep state 284 break; 285 } 286 } 287 288 static void a2dp_source_set_config(avdtp_connection_t * connection){ 289 uint8_t remote_seid = connection->a2dp_source_local_stream_endpoint->set_config_remote_seid; 290 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); 291 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 292 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); 293 } 294 295 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 296 UNUSED(channel); 297 UNUSED(size); 298 299 uint16_t cid; 300 avdtp_connection_t * connection; 301 302 uint8_t signal_identifier; 303 uint8_t status; 304 uint8_t local_seid; 305 uint8_t remote_seid; 306 307 if (packet_type != HCI_EVENT_PACKET) return; 308 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 309 310 switch (packet[2]){ 311 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 312 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 313 connection = avdtp_get_connection_for_avdtp_cid(cid); 314 btstack_assert(connection != NULL); 315 316 status = avdtp_subevent_signaling_connection_established_get_status(packet); 317 if (status != ERROR_CODE_SUCCESS){ 318 // notify about connection error only if we're initiator 319 if (connection->a2dp_source_outgoing_active){ 320 log_info("A2DP source signaling connection failed status 0x%02x", status); 321 connection->a2dp_source_outgoing_active = false; 322 a2dp_replace_subevent_id_and_emit_source(packet, size, 323 A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 324 } 325 break; 326 } 327 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 328 connection->a2dp_source_state = A2DP_CONNECTED; 329 330 // notify app 331 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 332 333 // Windows 10 as Source starts SEP discovery after 1500 ms, but only if it did not get a Discover command 334 // If BTstack is configured for both roles, we need to avoid sending Discover command in Source Role for outgoing Sink connections 335 336 // For this, we trigger SDP query only if: 337 // a) this is an outgoing source connection 338 // b) this connection wasn't caused by an outgoing sink request 339 if (connection->a2dp_source_outgoing_active || !connection->a2dp_sink_outgoing_active){ 340 a2dp_source_ready_for_sep_discovery(connection); 341 } 342 break; 343 344 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 345 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 346 connection = avdtp_get_connection_for_avdtp_cid(cid); 347 btstack_assert(connection != NULL); 348 349 if (connection->a2dp_source_state == A2DP_DISCOVER_SEPS) { 350 avdtp_sep_t sep; 351 memset(&sep, 0, sizeof(avdtp_sep_t)); 352 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 353 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 354 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 355 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 356 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 357 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 358 a2dp_source_sep_discovery_count); 359 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 360 a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_count++] = sep; 361 } 362 } 363 break; 364 365 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 366 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 367 connection = avdtp_get_connection_for_avdtp_cid(cid); 368 btstack_assert(connection != NULL); 369 370 if (connection->a2dp_source_state != A2DP_DISCOVER_SEPS) break; 371 372 if (a2dp_source_sep_discovery_count > 0){ 373 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 374 a2dp_source_sep_discovery_index = 0; 375 connection->a2dp_source_have_config = false; 376 } else { 377 if (connection->a2dp_source_outgoing_active){ 378 connection->a2dp_source_outgoing_active = false; 379 connection = avdtp_get_connection_for_avdtp_cid(cid); 380 btstack_assert(connection != NULL); 381 a2dp_emit_source_streaming_connection_failed(connection, 382 ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 383 } 384 385 // continue 386 connection->a2dp_source_state = A2DP_CONNECTED; 387 a2dp_source_sep_discovery_cid = 0; 388 a2dp_discover_seps_with_next_waiting_connection(); 389 } 390 break; 391 392 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 393 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 394 connection = avdtp_get_connection_for_avdtp_cid(cid); 395 btstack_assert(connection != NULL); 396 397 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 398 399 // forward codec capability 400 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 401 402 #ifndef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 403 // select SEP if none configured yet 404 if (connection->a2dp_source_have_config == false){ 405 // find SBC stream endpoint 406 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 407 if (stream_endpoint != NULL){ 408 // choose SBC config params 409 avdtp_configuration_sbc_t configuration; 410 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 411 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 412 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 413 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 414 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 415 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 416 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 417 418 // and pre-select this endpoint 419 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 420 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 421 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 422 } 423 } 424 #endif 425 break; 426 427 // forward codec capability 428 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 429 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 430 connection = avdtp_get_connection_for_avdtp_cid(cid); 431 btstack_assert(connection != NULL); 432 433 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 434 a2dp_replace_subevent_id_and_emit_source(packet, size, 435 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 436 break; 437 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 438 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 439 connection = avdtp_get_connection_for_avdtp_cid(cid); 440 btstack_assert(connection != NULL); 441 442 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 443 a2dp_replace_subevent_id_and_emit_source(packet, size, 444 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 445 break; 446 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 447 cid = avdtp_subevent_signaling_media_codec_atrac_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_source(packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 453 break; 454 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 455 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 456 connection = avdtp_get_connection_for_avdtp_cid(cid); 457 btstack_assert(connection != NULL); 458 459 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 460 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 461 break; 462 463 // not forwarded 464 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 465 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 466 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 467 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 468 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 469 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 470 break; 471 472 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 473 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 474 connection = avdtp_get_connection_for_avdtp_cid(cid); 475 btstack_assert(connection != NULL); 476 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_state); 477 478 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 479 480 // store delay reporting capability 481 a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 482 483 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 484 break; 485 486 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 487 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 488 connection = avdtp_get_connection_for_avdtp_cid(cid); 489 btstack_assert(connection != NULL); 490 491 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 492 493 // forward capabilities done for endpoint 494 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 495 496 // endpoint was not suitable, check next one 497 a2dp_source_sep_discovery_index++; 498 if (a2dp_source_sep_discovery_index >= a2dp_source_sep_discovery_count){ 499 500 // emit 'all capabilities for all seps reported' 501 uint8_t event[6]; 502 uint8_t pos = 0; 503 event[pos++] = HCI_EVENT_A2DP_META; 504 event[pos++] = sizeof(event) - 2; 505 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 506 little_endian_store_16(event, pos, cid); 507 a2dp_emit_source(event, sizeof(event)); 508 509 // do we have a valid config? 510 if (connection->a2dp_source_have_config){ 511 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 512 connection->a2dp_source_have_config = false; 513 break; 514 } 515 516 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 517 connection->a2dp_source_state = A2DP_DISCOVERY_DONE; 518 // TODO call a2dp_discover_seps_with_next_waiting_connection? 519 break; 520 #else 521 // we didn't find a suitable SBC stream endpoint, sorry. 522 if (connection->a2dp_source_outgoing_active){ 523 connection->a2dp_source_outgoing_active = false; 524 connection = avdtp_get_connection_for_avdtp_cid(cid); 525 btstack_assert(connection != NULL); 526 a2dp_emit_source_streaming_connection_failed(connection, 527 ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 528 } 529 connection->a2dp_source_state = A2DP_CONNECTED; 530 a2dp_source_sep_discovery_cid = 0; 531 a2dp_discover_seps_with_next_waiting_connection(); 532 #endif 533 } 534 break; 535 536 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 537 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 538 connection = avdtp_get_connection_for_avdtp_cid(cid); 539 btstack_assert(connection != NULL); 540 541 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 542 break; 543 544 // forward codec configuration 545 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 546 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 547 a2dp_handle_received_configuration(packet, local_seid); 548 a2dp_replace_subevent_id_and_emit_source(packet, size, 549 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 550 break; 551 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 552 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 553 a2dp_handle_received_configuration(packet, local_seid); 554 a2dp_replace_subevent_id_and_emit_source(packet, size, 555 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 556 break; 557 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 558 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 559 a2dp_handle_received_configuration(packet, local_seid); 560 a2dp_replace_subevent_id_and_emit_source(packet, size, 561 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_source(packet, size, 567 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 568 break; 569 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 570 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 571 a2dp_handle_received_configuration(packet, local_seid); 572 a2dp_replace_subevent_id_and_emit_source(packet, size, 573 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 574 break; 575 576 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 577 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 578 break; 579 580 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 581 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 582 connection = avdtp_get_connection_for_avdtp_cid(cid); 583 btstack_assert(connection != NULL); 584 585 if (connection->a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 586 587 connection->a2dp_source_outgoing_active = false; 588 status = avdtp_subevent_streaming_connection_established_get_status(packet); 589 if (status != ERROR_CODE_SUCCESS){ 590 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 591 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 592 break; 593 } 594 595 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 596 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 597 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 598 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 599 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 600 break; 601 602 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 603 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 604 connection = avdtp_get_connection_for_avdtp_cid(cid); 605 btstack_assert(connection != NULL); 606 607 // restart set config timer while remote is active for current cid 608 if (a2dp_source_set_config_timer_active && 609 (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && 610 (cid == a2dp_source_sep_discovery_cid)){ 611 612 a2dp_source_set_config_timer_restart(); 613 break; 614 } 615 616 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 617 618 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_state, cid); 619 620 switch (connection->a2dp_source_state){ 621 case A2DP_GET_CAPABILITIES: 622 remote_seid = a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].seid; 623 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 624 avdtp_source_get_all_capabilities(cid, remote_seid); 625 return; 626 627 case A2DP_SET_CONFIGURATION: 628 a2dp_source_set_config(connection); 629 return; 630 631 case A2DP_W2_OPEN_STREAM_WITH_SEID: 632 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); 633 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 634 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), connection->a2dp_source_local_stream_endpoint->remote_sep.seid); 635 break; 636 637 case A2DP_W2_RECONFIGURE_WITH_SEID: 638 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); 639 a2dp_emit_source_stream_reconfigured(cid, avdtp_stream_endpoint_seid( 640 connection->a2dp_source_local_stream_endpoint), ERROR_CODE_SUCCESS); 641 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 642 break; 643 644 case A2DP_STREAMING_OPENED: 645 switch (signal_identifier){ 646 case AVDTP_SI_START: 647 a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 648 break; 649 case AVDTP_SI_SUSPEND: 650 a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 651 break; 652 case AVDTP_SI_ABORT: 653 case AVDTP_SI_CLOSE: 654 a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 655 break; 656 default: 657 break; 658 } 659 break; 660 661 default: 662 break; 663 } 664 break; 665 666 case AVDTP_SUBEVENT_SIGNALING_REJECT: 667 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 668 connection = avdtp_get_connection_for_avdtp_cid(cid); 669 btstack_assert(connection != NULL); 670 671 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 672 673 switch (connection->a2dp_source_state) { 674 case A2DP_W2_RECONFIGURE_WITH_SEID: 675 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); 676 a2dp_emit_source_stream_reconfigured(cid, avdtp_stream_endpoint_seid( 677 connection->a2dp_source_local_stream_endpoint), ERROR_CODE_UNSPECIFIED_ERROR); 678 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 679 break; 680 default: 681 connection->a2dp_source_state = A2DP_CONNECTED; 682 break; 683 } 684 685 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 686 break; 687 688 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 689 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 690 connection = avdtp_get_connection_for_avdtp_cid(cid); 691 btstack_assert(connection != NULL); 692 693 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 694 695 connection->a2dp_source_state = A2DP_CONNECTED; 696 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 697 break; 698 699 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 700 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 701 connection = avdtp_get_connection_for_avdtp_cid(cid); 702 btstack_assert(connection != NULL); 703 704 connection->a2dp_source_state = A2DP_CONFIGURED; 705 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 706 break; 707 708 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 709 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 710 connection = avdtp_get_connection_for_avdtp_cid(cid); 711 btstack_assert(connection != NULL); 712 713 // connect/release are passed on to app 714 if (a2dp_source_sep_discovery_cid == cid){ 715 a2dp_source_set_config_timer_stop(); 716 connection->a2dp_source_stream_endpoint_configured = false; 717 connection->a2dp_source_local_stream_endpoint = NULL; 718 719 connection->a2dp_source_state = A2DP_IDLE; 720 a2dp_source_sep_discovery_cid = 0; 721 } 722 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 723 break; 724 725 default: 726 break; 727 } 728 } 729 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 730 btstack_assert(callback != NULL); 731 732 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 733 a2dp_register_source_packet_handler(callback); 734 } 735 736 void a2dp_source_init(void){ 737 a2dp_init(); 738 avdtp_source_init(); 739 } 740 741 void a2dp_source_deinit(void){ 742 a2dp_deinit(); 743 avdtp_source_deinit(); 744 a2dp_source_media_config_validator = NULL; 745 a2dp_source_sep_discovery_cid = 0; 746 } 747 748 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 749 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 750 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 751 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 752 if (!stream_endpoint){ 753 return NULL; 754 } 755 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 756 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 757 codec_capabilities, codec_capabilities_len); 758 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 759 760 // store user codec configuration buffer 761 stream_endpoint->media_codec_type = media_codec_type; 762 stream_endpoint->media_codec_configuration_info = codec_configuration; 763 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 764 765 return stream_endpoint; 766 } 767 768 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 769 avdtp_source_finalize_stream_endpoint(stream_endpoint); 770 } 771 772 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 773 774 uint16_t outgoing_cid; 775 776 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 777 if (connection == NULL){ 778 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 779 if (status != ERROR_CODE_SUCCESS) { 780 // if there's already a connection for for remote addr, avdtp_source_connect fails, 781 // but the stream will get set-up nevertheless 782 return status; 783 } 784 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 785 btstack_assert(connection != NULL); 786 787 // setup state 788 connection->a2dp_source_outgoing_active = true; 789 connection->a2dp_source_state = A2DP_W4_CONNECTED; 790 *avdtp_cid = outgoing_cid; 791 792 } else { 793 if (connection->a2dp_source_outgoing_active || connection->a2dp_source_stream_endpoint_configured) { 794 return ERROR_CODE_COMMAND_DISALLOWED; 795 } 796 797 // check state 798 switch (connection->a2dp_source_state){ 799 case A2DP_IDLE: 800 case A2DP_CONNECTED: 801 // restart process e.g. if there no suitable stream endpoints or they had been in use 802 connection->a2dp_source_outgoing_active = true; 803 *avdtp_cid = connection->avdtp_cid; 804 a2dp_source_ready_for_sep_discovery(connection); 805 break; 806 default: 807 return ERROR_CODE_COMMAND_DISALLOWED; 808 } 809 } 810 return ERROR_CODE_SUCCESS; 811 } 812 813 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 814 return avdtp_disconnect(avdtp_cid); 815 } 816 817 818 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 819 return avdtp_start_stream(avdtp_cid, local_seid); 820 } 821 822 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 823 return avdtp_suspend_stream(avdtp_cid, local_seid); 824 } 825 826 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 827 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 828 } 829 830 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 831 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 832 } 833 834 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){ 835 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 836 } 837 838 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){ 839 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 840 } 841 842 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 843 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 844 } 845 846 static uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 847 avdtp_media_codec_type_t codec_type) { 848 849 // check state 850 switch (connection->a2dp_source_state){ 851 case A2DP_DISCOVERY_DONE: 852 case A2DP_GET_CAPABILITIES: 853 break; 854 default: 855 return ERROR_CODE_COMMAND_DISALLOWED; 856 } 857 858 // lookup local stream endpoint 859 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 860 if (stream_endpoint == NULL){ 861 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 862 } 863 864 // lookup remote stream endpoint 865 avdtp_sep_t * remote_sep = NULL; 866 uint8_t i; 867 for (i=0; i < a2dp_source_sep_discovery_count; i++){ 868 if (a2dp_source_sep_discovery_seps[i].seid == remote_seid){ 869 remote_sep = &a2dp_source_sep_discovery_seps[i]; 870 } 871 } 872 if (remote_sep == NULL){ 873 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 874 } 875 876 // set media configuration 877 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 878 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 879 stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 880 // remote seid to use 881 stream_endpoint->set_config_remote_seid = remote_seid; 882 // enable delay reporting if supported 883 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 884 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 885 } 886 887 // suitable Sink stream endpoint found, configure it 888 connection->a2dp_source_local_stream_endpoint = stream_endpoint; 889 connection->a2dp_source_have_config = true; 890 891 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 892 // continue outgoing configuration 893 if (connection->a2dp_source_state == A2DP_DISCOVERY_DONE){ 894 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 895 } 896 #endif 897 898 return ERROR_CODE_SUCCESS; 899 } 900 901 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){ 902 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 903 if (connection == NULL){ 904 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 905 } 906 907 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 908 if (status != 0) { 909 return status; 910 } 911 // set config in reserved buffer 912 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 913 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 914 avdtp_config_sbc_store(connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 915 916 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 917 a2dp_source_set_config(connection); 918 #endif 919 920 return ERROR_CODE_SUCCESS; 921 } 922 923 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){ 924 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 925 if (connection == NULL){ 926 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 927 } 928 929 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 930 if (status != 0) { 931 return status; 932 } 933 934 // set config in reserved buffer 935 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *)connection->a2dp_source_local_stream_endpoint->media_codec_info; 936 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 937 avdtp_config_mpeg_audio_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 938 939 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 940 a2dp_source_set_config(connection); 941 #endif 942 943 return ERROR_CODE_SUCCESS; 944 } 945 946 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){ 947 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 948 if (connection == NULL){ 949 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 950 } 951 952 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 953 if (status != 0) { 954 return status; 955 } 956 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 957 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 958 avdtp_config_mpeg_aac_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 959 960 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 961 a2dp_source_set_config(connection); 962 #endif 963 964 return ERROR_CODE_SUCCESS; 965 } 966 967 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){ 968 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 969 if (connection == NULL){ 970 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 971 } 972 973 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 974 if (status != 0) { 975 return status; 976 } 977 978 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 979 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 980 avdtp_config_atrac_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 981 982 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 983 a2dp_source_set_config(connection); 984 #endif 985 986 return ERROR_CODE_SUCCESS; 987 } 988 989 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 990 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 991 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 992 if (connection == NULL){ 993 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 994 } 995 996 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 997 if (status != 0) { 998 return status; 999 } 1000 1001 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 1002 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 1003 1004 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 1005 a2dp_source_set_config(connection); 1006 #endif 1007 1008 return status; 1009 } 1010 1011 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 1012 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 1013 if (connection == NULL){ 1014 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1015 } 1016 1017 if (connection->a2dp_source_state != A2DP_STREAMING_OPENED) { 1018 return ERROR_CODE_COMMAND_DISALLOWED; 1019 } 1020 1021 btstack_assert(connection->a2dp_source_local_stream_endpoint != NULL); 1022 1023 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 1024 1025 avdtp_media_codec_type_t codec_type = connection->a2dp_source_local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 1026 uint8_t codec_info_len; 1027 switch (codec_type){ 1028 case AVDTP_CODEC_SBC: 1029 codec_info_len = 4; 1030 (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); 1031 avdtp_config_sbc_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1032 break; 1033 case AVDTP_CODEC_MPEG_1_2_AUDIO: 1034 codec_info_len = 4; 1035 (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); 1036 avdtp_config_mpeg_audio_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1037 break; 1038 case AVDTP_CODEC_MPEG_2_4_AAC: 1039 codec_info_len = 6; 1040 (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); 1041 avdtp_config_mpeg_aac_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1042 break; 1043 case AVDTP_CODEC_ATRAC_FAMILY: 1044 codec_info_len = 7; 1045 (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); 1046 avdtp_config_atrac_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1047 break; 1048 default: 1049 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1050 } 1051 1052 avdtp_capabilities_t new_configuration; 1053 new_configuration.media_codec.media_type = AVDTP_AUDIO; 1054 new_configuration.media_codec.media_codec_type = codec_type; 1055 new_configuration.media_codec.media_codec_information_len = codec_info_len; 1056 new_configuration.media_codec.media_codec_information = connection->a2dp_source_local_stream_endpoint->media_codec_info; 1057 1058 // start reconfigure 1059 connection->a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 1060 1061 return avdtp_source_reconfigure( 1062 avdtp_cid, 1063 avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), 1064 connection->a2dp_source_local_stream_endpoint->remote_sep.seid, 1065 1 << AVDTP_MEDIA_CODEC, 1066 new_configuration 1067 ); 1068 } 1069 1070 static uint8_t a2dp_source_media_config_validator_callback(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size){ 1071 uint8_t error = 0; 1072 if (a2dp_source_media_config_validator != NULL) { 1073 // update subevent id and call validator 1074 uint8_t avdtp_subevent_id = event[2]; 1075 uint8_t a2dp_subevent_id = a2dp_subevent_id_for_avdtp_subevent_id(avdtp_subevent_id); 1076 uint8_t * subevent_field = (uint8_t *) &event[2]; 1077 *subevent_field = a2dp_subevent_id; 1078 error = (*a2dp_source_media_config_validator)(stream_endpoint, event, size); 1079 *subevent_field = avdtp_subevent_id; 1080 } 1081 return error; 1082 } 1083 1084 void a2dp_source_register_media_config_validator(uint8_t (*callback)(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size)){ 1085 a2dp_source_media_config_validator = callback; 1086 avdtp_source_register_media_config_validator(&a2dp_source_media_config_validator_callback); 1087 } 1088 1089