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 // outgoing active? 285 if (avdtp_connection->a2dp_source_state == 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 } else { 289 // incoming: wait for stream open 290 avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 291 } 292 } 293 294 static void a2dp_source_set_config(avdtp_connection_t * connection){ 295 uint8_t remote_seid = connection->a2dp_source_local_stream_endpoint->set_config_remote_seid; 296 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); 297 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 298 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); 299 } 300 301 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 302 UNUSED(channel); 303 UNUSED(size); 304 305 uint16_t cid; 306 avdtp_connection_t * connection; 307 308 uint8_t signal_identifier; 309 uint8_t status; 310 uint8_t local_seid; 311 uint8_t remote_seid; 312 313 if (packet_type != HCI_EVENT_PACKET) return; 314 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 315 316 switch (packet[2]){ 317 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 318 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 319 connection = avdtp_get_connection_for_avdtp_cid(cid); 320 btstack_assert(connection != NULL); 321 322 status = avdtp_subevent_signaling_connection_established_get_status(packet); 323 if (status != ERROR_CODE_SUCCESS){ 324 // notify about connection error only if we're initiator 325 if (connection->a2dp_source_outgoing_active){ 326 log_info("A2DP source signaling connection failed status 0x%02x", status); 327 connection->a2dp_source_outgoing_active = false; 328 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 329 } 330 break; 331 } 332 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 333 connection->a2dp_source_state = A2DP_CONNECTED; 334 335 // notify app 336 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 337 338 // continue 339 a2dp_source_ready_for_sep_discovery(connection); 340 break; 341 342 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 343 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 344 connection = avdtp_get_connection_for_avdtp_cid(cid); 345 btstack_assert(connection != NULL); 346 347 if (connection->a2dp_source_state == A2DP_DISCOVER_SEPS) { 348 avdtp_sep_t sep; 349 memset(&sep, 0, sizeof(avdtp_sep_t)); 350 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 351 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 352 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 353 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 354 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 355 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 356 sep_discovery_count); 357 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 358 sep_discovery_seps[sep_discovery_count++] = sep; 359 } 360 } 361 break; 362 363 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 364 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 365 connection = avdtp_get_connection_for_avdtp_cid(cid); 366 btstack_assert(connection != NULL); 367 368 if (connection->a2dp_source_state != A2DP_DISCOVER_SEPS) break; 369 370 if (sep_discovery_count > 0){ 371 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 372 sep_discovery_index = 0; 373 connection->a2dp_source_have_config = false; 374 } else { 375 if (connection->a2dp_source_outgoing_active){ 376 connection->a2dp_source_outgoing_active = false; 377 connection = avdtp_get_connection_for_avdtp_cid(cid); 378 btstack_assert(connection != NULL); 379 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 380 } 381 382 // continue 383 connection->a2dp_source_state = A2DP_CONNECTED; 384 sep_discovery_cid = 0; 385 a2dp_discover_seps_with_next_waiting_connection(); 386 } 387 break; 388 389 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 390 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 391 connection = avdtp_get_connection_for_avdtp_cid(cid); 392 btstack_assert(connection != NULL); 393 394 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 395 396 // forward codec capability 397 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 398 399 #ifndef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 400 // select SEP if none configured yet 401 if (connection->a2dp_source_have_config == false){ 402 // find SBC stream endpoint 403 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 404 if (stream_endpoint != NULL){ 405 // choose SBC config params 406 avdtp_configuration_sbc_t configuration; 407 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 408 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 409 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 410 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 411 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 412 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 413 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 414 415 // and pre-select this endpoint 416 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 417 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 418 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 419 } 420 } 421 #endif 422 break; 423 424 // forward codec capability 425 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 426 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 427 connection = avdtp_get_connection_for_avdtp_cid(cid); 428 btstack_assert(connection != NULL); 429 430 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 431 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 432 break; 433 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 434 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 435 connection = avdtp_get_connection_for_avdtp_cid(cid); 436 btstack_assert(connection != NULL); 437 438 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 439 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 440 break; 441 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 442 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 443 connection = avdtp_get_connection_for_avdtp_cid(cid); 444 btstack_assert(connection != NULL); 445 446 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 447 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 448 break; 449 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 450 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 451 connection = avdtp_get_connection_for_avdtp_cid(cid); 452 btstack_assert(connection != NULL); 453 454 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 455 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 456 break; 457 458 // not forwarded 459 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 460 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 461 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 462 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 463 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 464 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 465 break; 466 467 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 468 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 469 connection = avdtp_get_connection_for_avdtp_cid(cid); 470 btstack_assert(connection != NULL); 471 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_state); 472 473 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 474 475 // store delay reporting capability 476 sep_discovery_seps[sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 477 478 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 479 break; 480 481 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 482 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 483 connection = avdtp_get_connection_for_avdtp_cid(cid); 484 btstack_assert(connection != NULL); 485 486 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 487 488 // forward capabilities done for endpoint 489 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 490 491 // endpoint was not suitable, check next one 492 sep_discovery_index++; 493 if (sep_discovery_index >= sep_discovery_count){ 494 495 // emit 'all capabilities for all seps reported' 496 uint8_t event[6]; 497 uint8_t pos = 0; 498 event[pos++] = HCI_EVENT_A2DP_META; 499 event[pos++] = sizeof(event) - 2; 500 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 501 little_endian_store_16(event, pos, cid); 502 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 503 504 // do we have a valid config? 505 if (connection->a2dp_source_have_config){ 506 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 507 connection->a2dp_source_have_config = false; 508 break; 509 } 510 511 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 512 connection->a2dp_source_state = A2DP_DISCOVERY_DONE; 513 // TODO call a2dp_discover_seps_with_next_waiting_connection? 514 break; 515 #else 516 // we didn't find a suitable SBC stream endpoint, sorry. 517 if (connection->a2dp_source_outgoing_active){ 518 connection->a2dp_source_outgoing_active = false; 519 connection = avdtp_get_connection_for_avdtp_cid(cid); 520 btstack_assert(connection != NULL); 521 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 522 } 523 connection->a2dp_source_state = A2DP_CONNECTED; 524 sep_discovery_cid = 0; 525 a2dp_discover_seps_with_next_waiting_connection(); 526 #endif 527 } 528 break; 529 530 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 531 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 532 connection = avdtp_get_connection_for_avdtp_cid(cid); 533 btstack_assert(connection != NULL); 534 535 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 536 break; 537 538 // forward codec configuration 539 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 540 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 541 a2dp_handle_received_configuration(packet, local_seid); 542 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 543 break; 544 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 545 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 546 a2dp_handle_received_configuration(packet, local_seid); 547 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 548 break; 549 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 550 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 551 a2dp_handle_received_configuration(packet, local_seid); 552 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 553 break; 554 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 555 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 556 a2dp_handle_received_configuration(packet, local_seid); 557 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 558 break; 559 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 560 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 561 a2dp_handle_received_configuration(packet, local_seid); 562 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 563 break; 564 565 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 566 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 567 break; 568 569 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 570 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 571 connection = avdtp_get_connection_for_avdtp_cid(cid); 572 btstack_assert(connection != NULL); 573 574 if (connection->a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 575 576 connection->a2dp_source_outgoing_active = false; 577 status = avdtp_subevent_streaming_connection_established_get_status(packet); 578 if (status != ERROR_CODE_SUCCESS){ 579 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 580 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 581 break; 582 } 583 584 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 585 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 586 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 587 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 588 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 589 break; 590 591 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 592 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 593 connection = avdtp_get_connection_for_avdtp_cid(cid); 594 btstack_assert(connection != NULL); 595 596 // reset discovery timer while remote is active for current cid 597 if ((avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && (cid == sep_discovery_cid)){ 598 log_info("Reset discovery timer"); 599 a2dp_source_set_config_timer_start(sep_discovery_cid); 600 break; 601 } 602 603 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 604 605 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_state, cid); 606 607 switch (connection->a2dp_source_state){ 608 case A2DP_GET_CAPABILITIES: 609 remote_seid = sep_discovery_seps[sep_discovery_index].seid; 610 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 611 avdtp_source_get_all_capabilities(cid, remote_seid); 612 return; 613 614 case A2DP_SET_CONFIGURATION: 615 a2dp_source_set_config(connection); 616 return; 617 618 case A2DP_W2_OPEN_STREAM_WITH_SEID: 619 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); 620 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 621 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), connection->a2dp_source_local_stream_endpoint->remote_sep.seid); 622 break; 623 624 case A2DP_W2_RECONFIGURE_WITH_SEID: 625 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); 626 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), ERROR_CODE_SUCCESS); 627 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 628 break; 629 630 case A2DP_STREAMING_OPENED: 631 switch (signal_identifier){ 632 case AVDTP_SI_START: 633 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 634 break; 635 case AVDTP_SI_SUSPEND: 636 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 637 break; 638 case AVDTP_SI_ABORT: 639 case AVDTP_SI_CLOSE: 640 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 641 break; 642 default: 643 break; 644 } 645 break; 646 647 default: 648 break; 649 } 650 break; 651 652 case AVDTP_SUBEVENT_SIGNALING_REJECT: 653 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 654 connection = avdtp_get_connection_for_avdtp_cid(cid); 655 btstack_assert(connection != NULL); 656 657 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 658 659 connection->a2dp_source_state = A2DP_CONNECTED; 660 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 661 break; 662 663 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 664 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 665 connection = avdtp_get_connection_for_avdtp_cid(cid); 666 btstack_assert(connection != NULL); 667 668 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 669 670 connection->a2dp_source_state = A2DP_CONNECTED; 671 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 672 break; 673 674 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 675 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 676 connection = avdtp_get_connection_for_avdtp_cid(cid); 677 btstack_assert(connection != NULL); 678 679 connection->a2dp_source_state = A2DP_CONFIGURED; 680 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 681 break; 682 683 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 684 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 685 connection = avdtp_get_connection_for_avdtp_cid(cid); 686 btstack_assert(connection != NULL); 687 688 // connect/release are passed on to app 689 if (sep_discovery_cid == cid){ 690 a2dp_source_set_config_timer_stop(); 691 connection->a2dp_source_stream_endpoint_configured = false; 692 connection->a2dp_source_local_stream_endpoint = NULL; 693 694 connection->a2dp_source_state = A2DP_IDLE; 695 sep_discovery_cid = 0; 696 } 697 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 698 break; 699 700 default: 701 break; 702 } 703 } 704 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 705 btstack_assert(callback != NULL); 706 707 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 708 a2dp_source_packet_handler_user = callback; 709 } 710 711 void a2dp_source_init(void){ 712 avdtp_source_init(); 713 } 714 715 void a2dp_source_deinit(void){ 716 avdtp_source_deinit(); 717 sep_discovery_count = 0; 718 } 719 720 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 721 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 722 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 723 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 724 if (!stream_endpoint){ 725 return NULL; 726 } 727 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 728 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 729 codec_capabilities, codec_capabilities_len); 730 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 731 732 // store user codec configuration buffer 733 stream_endpoint->media_codec_type = media_codec_type; 734 stream_endpoint->media_codec_configuration_info = codec_configuration; 735 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 736 737 return stream_endpoint; 738 } 739 740 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 741 avdtp_source_finalize_stream_endpoint(stream_endpoint); 742 } 743 744 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 745 746 uint16_t outgoing_cid; 747 748 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 749 if (connection == NULL){ 750 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 751 if (status != ERROR_CODE_SUCCESS) { 752 // if there's already a connection for for remote addr, avdtp_source_connect fails, 753 // but the stream will get set-up nevertheless 754 return status; 755 } 756 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 757 btstack_assert(connection != NULL); 758 759 // setup state 760 connection->a2dp_source_outgoing_active = true; 761 connection->a2dp_source_state = A2DP_W4_CONNECTED; 762 *avdtp_cid = outgoing_cid; 763 764 } else { 765 if (connection->a2dp_source_outgoing_active || connection->a2dp_source_stream_endpoint_configured) { 766 return ERROR_CODE_COMMAND_DISALLOWED; 767 } 768 769 // check state 770 switch (connection->a2dp_source_state){ 771 case A2DP_IDLE: 772 case A2DP_CONNECTED: 773 // restart process e.g. if there no suitable stream endpoints or they had been in use 774 connection->a2dp_source_outgoing_active = true; 775 *avdtp_cid = connection->avdtp_cid; 776 a2dp_source_ready_for_sep_discovery(connection); 777 break; 778 default: 779 return ERROR_CODE_COMMAND_DISALLOWED; 780 } 781 } 782 return ERROR_CODE_SUCCESS; 783 } 784 785 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 786 return avdtp_disconnect(avdtp_cid); 787 } 788 789 790 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 791 return avdtp_start_stream(avdtp_cid, local_seid); 792 } 793 794 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 795 return avdtp_suspend_stream(avdtp_cid, local_seid); 796 } 797 798 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 799 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 800 } 801 802 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 803 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 804 } 805 806 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){ 807 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 808 } 809 810 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){ 811 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 812 } 813 814 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 815 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 816 } 817 818 static uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 819 avdtp_media_codec_type_t codec_type) { 820 821 // check state 822 switch (connection->a2dp_source_state){ 823 case A2DP_DISCOVERY_DONE: 824 case A2DP_GET_CAPABILITIES: 825 break; 826 default: 827 return ERROR_CODE_COMMAND_DISALLOWED; 828 } 829 830 // lookup local stream endpoint 831 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 832 if (stream_endpoint == NULL){ 833 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 834 } 835 836 // lookup remote stream endpoint 837 avdtp_sep_t * remote_sep = NULL; 838 uint8_t i; 839 for (i=0; i < sep_discovery_count; i++){ 840 if (sep_discovery_seps[i].seid == remote_seid){ 841 remote_sep = &sep_discovery_seps[i]; 842 } 843 } 844 if (remote_sep == NULL){ 845 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 846 } 847 848 // set media configuration 849 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 850 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 851 stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 852 // remote seid to use 853 stream_endpoint->set_config_remote_seid = remote_seid; 854 // enable delay reporting if supported 855 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 856 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 857 } 858 859 // suitable Sink stream endpoint found, configure it 860 connection->a2dp_source_local_stream_endpoint = stream_endpoint; 861 connection->a2dp_source_have_config = true; 862 863 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 864 // continue outgoing configuration 865 if (connection->a2dp_source_state == A2DP_DISCOVERY_DONE){ 866 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 867 } 868 #endif 869 870 return ERROR_CODE_SUCCESS; 871 } 872 873 uint8_t a2dp_source_set_config_sbc(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_sbc_t * configuration){ 874 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 875 if (connection == NULL){ 876 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 877 } 878 879 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 880 if (status != 0) { 881 return status; 882 } 883 // set config in reserved buffer 884 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 885 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 886 avdtp_config_sbc_store(connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 887 888 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 889 a2dp_source_set_config(connection); 890 #endif 891 892 return ERROR_CODE_SUCCESS; 893 } 894 895 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){ 896 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 897 if (connection == NULL){ 898 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 899 } 900 901 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 902 if (status != 0) { 903 return status; 904 } 905 906 // set config in reserved buffer 907 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *)connection->a2dp_source_local_stream_endpoint->media_codec_info; 908 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 909 avdtp_config_mpeg_audio_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 910 911 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 912 a2dp_source_set_config(connection); 913 #endif 914 915 return ERROR_CODE_SUCCESS; 916 } 917 918 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){ 919 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 920 if (connection == NULL){ 921 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 922 } 923 924 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 925 if (status != 0) { 926 return status; 927 } 928 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 929 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 930 avdtp_config_mpeg_aac_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 931 932 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 933 a2dp_source_set_config(connection); 934 #endif 935 936 return ERROR_CODE_SUCCESS; 937 } 938 939 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){ 940 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 941 if (connection == NULL){ 942 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 943 } 944 945 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 946 if (status != 0) { 947 return status; 948 } 949 950 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 951 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 952 avdtp_config_atrac_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 953 954 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 955 a2dp_source_set_config(connection); 956 #endif 957 958 return ERROR_CODE_SUCCESS; 959 } 960 961 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 962 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 963 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 964 if (connection == NULL){ 965 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 966 } 967 968 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 969 if (status != 0) { 970 return status; 971 } 972 973 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 974 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 975 976 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 977 a2dp_source_set_config(connection); 978 #endif 979 980 return status; 981 } 982 983 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 984 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 985 if (connection == NULL){ 986 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 987 } 988 989 if (connection->a2dp_source_state != A2DP_STREAMING_OPENED) { 990 return ERROR_CODE_COMMAND_DISALLOWED; 991 } 992 993 btstack_assert(connection->a2dp_source_local_stream_endpoint != NULL); 994 995 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 996 997 avdtp_media_codec_type_t codec_type = connection->a2dp_source_local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 998 uint8_t codec_info_len; 999 switch (codec_type){ 1000 case AVDTP_CODEC_SBC: 1001 codec_info_len = 4; 1002 (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); 1003 avdtp_config_sbc_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1004 break; 1005 case AVDTP_CODEC_MPEG_1_2_AUDIO: 1006 codec_info_len = 4; 1007 (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); 1008 avdtp_config_mpeg_audio_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1009 break; 1010 case AVDTP_CODEC_MPEG_2_4_AAC: 1011 codec_info_len = 6; 1012 (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); 1013 avdtp_config_mpeg_aac_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1014 break; 1015 case AVDTP_CODEC_ATRAC_FAMILY: 1016 codec_info_len = 7; 1017 (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); 1018 avdtp_config_atrac_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1019 break; 1020 default: 1021 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1022 } 1023 1024 avdtp_capabilities_t new_configuration; 1025 new_configuration.media_codec.media_type = AVDTP_AUDIO; 1026 new_configuration.media_codec.media_codec_type = codec_type; 1027 new_configuration.media_codec.media_codec_information_len = codec_info_len; 1028 new_configuration.media_codec.media_codec_information = connection->a2dp_source_local_stream_endpoint->media_codec_info; 1029 1030 // start reconfigure 1031 connection->a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 1032 1033 return avdtp_source_reconfigure( 1034 avdtp_cid, 1035 avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), 1036 connection->a2dp_source_local_stream_endpoint->remote_sep.seid, 1037 1 << AVDTP_MEDIA_CODEC, 1038 new_configuration 1039 ); 1040 } 1041