1 2 /* 3 * Copyright (C) 2016 BlueKitchen GmbH 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the copyright holders nor the names of 15 * contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 4. Any redistribution, use, or modification is done solely for 18 * personal benefit and not for any commercial purpose or for 19 * monetary gain. 20 * 21 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 25 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 28 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 31 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * Please inquire about commercial licensing options at 35 * [email protected] 36 * 37 */ 38 39 /** 40 * Supported use cases: 41 * - single incoming connection: sep discovery starts and stream will get setup if remote sink sep with SBC is found 42 * - single outgoing connection: see above 43 * - outgoing and incoming connection to same device: 44 * - if outgoing is triggered first, incoming will get ignored. 45 * - if incoming starts first, start ougoing will fail, but incoming will succeed. 46 * - outgoing and incoming connections to different devices: 47 * - if outgoing is first, incoming gets ignored. 48 * - if incoming starts first SEP discovery will get stopped and outgoing will succeed. 49 */ 50 51 #define BTSTACK_FILE__ "a2dp_source.c" 52 53 #include <stdint.h> 54 #include <string.h> 55 56 #include "bluetooth_psm.h" 57 #include "bluetooth_sdp.h" 58 #include "btstack_debug.h" 59 #include "btstack_event.h" 60 #include "classic/a2dp_source.h" 61 #include "classic/avdtp_source.h" 62 #include "classic/avdtp_util.h" 63 #include "classic/sdp_util.h" 64 #include "l2cap.h" 65 66 #define AVDTP_MAX_SEP_NUM 10 67 #define A2DP_SET_CONFIG_DELAY_MS 150 68 69 typedef struct { 70 avdtp_stream_endpoint_t * local_stream_endpoint; 71 uint8_t active_remote_sep_index; 72 } avdtp_stream_endpoint_context_t; 73 74 75 static const char * default_a2dp_source_service_name = "BTstack A2DP Source Service"; 76 static const char * default_a2dp_source_service_provider_name = "BTstack A2DP Source Service Provider"; 77 78 static btstack_timer_source_t a2dp_source_set_config_timer; 79 80 static bool outgoing_active; 81 82 // discover remote seps 83 static a2dp_state_t a2dp_source_state; 84 static uint16_t a2dp_source_cid; 85 static uint16_t num_remote_seps; 86 static avdtp_sep_t remote_seps[AVDTP_MAX_SEP_NUM]; 87 88 static bool a2dp_source_have_config; 89 90 static bool stream_endpoint_configured; 91 92 static avdtp_stream_endpoint_context_t sc; 93 static btstack_packet_handler_t a2dp_source_packet_handler_user; 94 95 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 96 static void a2dp_discover_seps_with_next_waiting_connection(void); 97 98 static void a2dp_source_streaming_emit_connection_failed(avdtp_connection_t *connection, uint8_t status) { 99 uint8_t event[14]; 100 int pos = 0; 101 event[pos++] = HCI_EVENT_A2DP_META; 102 event[pos++] = sizeof(event) - 2; 103 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 104 little_endian_store_16(event, pos, connection->avdtp_cid); 105 pos += 2; 106 reverse_bd_addr(connection->remote_addr, &event[pos]); 107 pos += 6; 108 event[pos++] = 0; 109 event[pos++] = 0; 110 event[pos++] = status; 111 112 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 113 } 114 115 void a2dp_source_create_sdp_record(uint8_t * service, uint32_t service_record_handle, uint16_t supported_features, const char * service_name, const char * service_provider_name){ 116 uint8_t* attribute; 117 de_create_sequence(service); 118 119 // 0x0000 "Service Record Handle" 120 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 121 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 122 123 // 0x0001 "Service Class ID List" 124 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 125 attribute = de_push_sequence(service); 126 { 127 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); 128 } 129 de_pop_sequence(service, attribute); 130 131 // 0x0004 "Protocol Descriptor List" 132 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 133 attribute = de_push_sequence(service); 134 { 135 uint8_t* l2cpProtocol = de_push_sequence(attribute); 136 { 137 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 138 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 139 } 140 de_pop_sequence(attribute, l2cpProtocol); 141 142 uint8_t* avProtocol = de_push_sequence(attribute); 143 { 144 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 145 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 146 } 147 de_pop_sequence(attribute, avProtocol); 148 } 149 de_pop_sequence(service, attribute); 150 151 // 0x0005 "Public Browse Group" 152 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 153 attribute = de_push_sequence(service); 154 { 155 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 156 } 157 de_pop_sequence(service, attribute); 158 159 // 0x0009 "Bluetooth Profile Descriptor List" 160 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 161 attribute = de_push_sequence(service); 162 { 163 uint8_t *a2dProfile = de_push_sequence(attribute); 164 { 165 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 166 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 167 } 168 de_pop_sequence(attribute, a2dProfile); 169 } 170 de_pop_sequence(service, attribute); 171 172 173 // 0x0100 "Service Name" 174 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 175 if (service_name){ 176 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 177 } else { 178 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_name), (uint8_t *) default_a2dp_source_service_name); 179 } 180 181 // 0x0100 "Provider Name" 182 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 183 if (service_provider_name){ 184 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 185 } else { 186 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_provider_name), (uint8_t *) default_a2dp_source_service_provider_name); 187 } 188 189 // 0x0311 "Supported Features" 190 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 191 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 192 } 193 194 static void a2dp_signaling_emit_reconfigured(uint16_t cid, uint8_t local_seid, uint8_t status){ 195 uint8_t event[7]; 196 int pos = 0; 197 event[pos++] = HCI_EVENT_A2DP_META; 198 event[pos++] = sizeof(event) - 2; 199 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 200 little_endian_store_16(event, pos, cid); 201 pos += 2; 202 event[pos++] = local_seid; 203 event[pos++] = status; 204 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 205 } 206 207 static void a2dp_source_discover_stream_endpoints(uint16_t avdtp_cid){ 208 a2dp_source_cid = avdtp_cid; 209 avdtp_source_discover_stream_endpoints(avdtp_cid); 210 } 211 212 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 213 if (stream_endpoint_configured) return; 214 215 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 216 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 217 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 218 219 if (connection == NULL) { 220 log_info("a2dp_discover_seps_with_next_waiting_connection"); 221 a2dp_discover_seps_with_next_waiting_connection(); 222 return; 223 } 224 225 a2dp_source_discover_stream_endpoints(avdtp_cid); 226 } 227 228 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 229 log_info("a2dp_source_set_config_timer_start cid 0%02x", avdtp_cid); 230 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 231 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 232 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 233 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 234 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 235 } 236 237 static void a2dp_source_set_config_timer_stop(void){ 238 log_info("a2dp_source_set_config_timer_stop"); 239 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 240 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 241 } 242 243 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 244 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 245 a2dp_source_state = A2DP_DISCOVER_SEPS; 246 sc.active_remote_sep_index = 0; 247 num_remote_seps = 0; 248 memset(remote_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 249 connection->a2dp_source_discover_seps = false; 250 251 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 252 if (outgoing_active && (a2dp_source_cid == connection->avdtp_cid)){ 253 log_info("discover seps"); 254 a2dp_source_discover_stream_endpoints(connection->avdtp_cid); 255 } else { 256 log_info("wait a bit, then discover seps"); 257 a2dp_source_set_config_timer_start(connection->avdtp_cid); 258 } 259 } 260 261 static void a2dp_discover_seps_with_next_waiting_connection(void){ 262 // ok: all callers set state in connection struct 263 a2dp_source_state = A2DP_IDLE; 264 265 btstack_linked_list_iterator_t it; 266 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 267 while (btstack_linked_list_iterator_has_next(&it)){ 268 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 269 if (!next_connection->a2dp_source_discover_seps) continue; 270 a2dp_start_discovering_seps(next_connection); 271 } 272 } 273 274 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 275 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 276 avdtp_connection_t * avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); 277 btstack_assert(avdtp_connection != NULL); 278 if ((a2dp_source_cid == cid) && (a2dp_source_state == A2DP_W4_SET_CONFIGURATION)){ 279 // outgoing: discovery and config of remote sink sep successful, trigger stream open 280 avdtp_connection->a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 281 a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 282 } else { 283 // incoming: accept cid, lookup local stream endpoint and wait for stream open 284 a2dp_source_cid = cid; 285 sc.local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 286 btstack_assert(sc.local_stream_endpoint != NULL); 287 avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 288 a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 289 } 290 291 // config set: stop timer 292 a2dp_source_set_config_timer_stop(); 293 stream_endpoint_configured = true; 294 } 295 296 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 297 UNUSED(channel); 298 UNUSED(size); 299 300 uint16_t cid; 301 avdtp_connection_t * connection; 302 303 uint8_t signal_identifier; 304 uint8_t status; 305 uint8_t local_seid; 306 uint8_t remote_seid; 307 308 if (packet_type != HCI_EVENT_PACKET) return; 309 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 310 311 switch (packet[2]){ 312 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 313 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 314 connection = avdtp_get_connection_for_avdtp_cid(cid); 315 btstack_assert(connection != NULL); 316 317 status = avdtp_subevent_signaling_connection_established_get_status(packet); 318 if (status != ERROR_CODE_SUCCESS){ 319 // notify about connection error only if we're initiator 320 if (outgoing_active && (a2dp_source_cid == cid)){ 321 log_info("A2DP source signaling connection failed status 0x%02x", status); 322 outgoing_active = false; 323 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 324 } 325 break; 326 } 327 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 328 329 // notify app 330 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 331 332 // we already have a valid setup 333 if (stream_endpoint_configured) return; 334 335 // start discover seps now if: 336 // - outgoing active: signaling for outgoing connection 337 // - outgoing not active: incoming connection and no sep discover ongoing 338 339 log_info("outgoing_active %d, current avdtp cid 0x%02x, a2dp_source_state %d", outgoing_active, cid, a2dp_source_state); 340 if ((outgoing_active && (a2dp_source_cid == cid)) || (!outgoing_active && (a2dp_source_state == A2DP_IDLE))){ 341 a2dp_start_discovering_seps(connection); 342 } else { 343 // post-pone sep discovery 344 connection->a2dp_source_discover_seps = true; 345 } 346 break; 347 348 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 349 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 350 if (a2dp_source_cid != cid) break; 351 if (a2dp_source_state == A2DP_DISCOVER_SEPS) { 352 avdtp_sep_t sep; 353 memset(&sep, 0, sizeof(avdtp_sep_t)); 354 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 355 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 356 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 357 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 358 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 359 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 360 num_remote_seps); 361 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 362 remote_seps[num_remote_seps++] = sep; 363 } 364 } 365 break; 366 367 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 368 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 369 if (a2dp_source_cid != cid) break; 370 if (a2dp_source_state != A2DP_DISCOVER_SEPS) break; 371 connection = avdtp_get_connection_for_avdtp_cid(cid); 372 btstack_assert(connection != NULL); 373 374 if (num_remote_seps > 0){ 375 a2dp_source_state = A2DP_GET_CAPABILITIES; 376 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 377 sc.active_remote_sep_index = 0; 378 a2dp_source_have_config = false; 379 } else { 380 if (outgoing_active){ 381 outgoing_active = false; 382 connection = avdtp_get_connection_for_avdtp_cid(cid); 383 btstack_assert(connection != NULL); 384 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 385 } 386 387 // continue 388 connection->a2dp_source_state = A2DP_CONNECTED; 389 a2dp_source_state = A2DP_CONNECTED; 390 a2dp_discover_seps_with_next_waiting_connection(); 391 } 392 break; 393 394 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 395 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 396 if (a2dp_source_cid != cid) break; 397 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 398 399 // forward codec capability 400 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 401 402 // select SEP if none configured yet 403 if (a2dp_source_have_config == false){ 404 // find SBC stream endpoint 405 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 406 if (stream_endpoint != NULL){ 407 // choose SBC config params 408 avdtp_configuration_sbc_t configuration; 409 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 410 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 411 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 412 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 413 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 414 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 415 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 416 417 // and pre-select this endpoint 418 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 419 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 420 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 421 } 422 } 423 break; 424 425 // forward codec capability 426 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 427 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 428 if (a2dp_source_cid != cid) break; 429 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 430 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 431 break; 432 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 433 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 434 if (a2dp_source_cid != cid) break; 435 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 436 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 437 break; 438 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 439 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 440 if (a2dp_source_cid != cid) break; 441 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 442 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 443 break; 444 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 445 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 446 if (a2dp_source_cid != cid) break; 447 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 448 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 449 break; 450 451 // not forwarded 452 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 453 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 454 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 455 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 456 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 457 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 458 break; 459 460 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 461 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 462 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, a2dp_source_state); 463 464 if (a2dp_source_cid != cid) break; 465 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 466 467 // store delay reporting capability 468 remote_seps[sc.active_remote_sep_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 469 470 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 471 break; 472 473 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 474 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 475 if (a2dp_source_cid != cid) break; 476 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 477 478 connection = avdtp_get_connection_for_avdtp_cid(cid); 479 btstack_assert(connection != NULL); 480 481 // forward capabilities done for endpoint 482 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 483 484 // endpoint was not suitable, check next one 485 sc.active_remote_sep_index++; 486 if (sc.active_remote_sep_index >= num_remote_seps){ 487 488 // emit 'all capabilities for all seps reported' 489 uint8_t event[6]; 490 uint8_t pos = 0; 491 event[pos++] = HCI_EVENT_A2DP_META; 492 event[pos++] = sizeof(event) - 2; 493 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 494 little_endian_store_16(event, pos, cid); 495 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 496 497 // do we have a valid config? 498 if (a2dp_source_have_config){ 499 a2dp_source_state = A2DP_SET_CONFIGURATION; 500 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 501 a2dp_source_have_config = false; 502 break; 503 } 504 505 // we didn't find a suitable SBC stream endpoint, sorry. 506 if (outgoing_active){ 507 outgoing_active = false; 508 connection = avdtp_get_connection_for_avdtp_cid(cid); 509 btstack_assert(connection != NULL); 510 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 511 } 512 connection->a2dp_source_state = A2DP_CONNECTED; 513 a2dp_discover_seps_with_next_waiting_connection(); 514 } 515 break; 516 517 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 518 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 519 if (a2dp_source_cid != cid) break; 520 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 521 break; 522 523 // forward codec configuration 524 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 525 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 526 a2dp_handle_received_configuration(packet, local_seid); 527 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 528 break; 529 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 530 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 531 a2dp_handle_received_configuration(packet, local_seid); 532 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 533 break; 534 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 535 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 536 a2dp_handle_received_configuration(packet, local_seid); 537 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 538 break; 539 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 540 local_seid = avdtp_subevent_signaling_media_codec_atrac_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_ATRAC_CONFIGURATION); 543 break; 544 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 545 local_seid = avdtp_subevent_signaling_media_codec_sbc_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_OTHER_CONFIGURATION); 548 break; 549 550 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 551 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 552 break; 553 554 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 555 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 556 if (a2dp_source_cid != cid) break; 557 if (a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 558 559 connection = avdtp_get_connection_for_avdtp_cid(cid); 560 btstack_assert(connection != NULL); 561 562 outgoing_active = false; 563 status = avdtp_subevent_streaming_connection_established_get_status(packet); 564 if (status != ERROR_CODE_SUCCESS){ 565 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 566 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 567 break; 568 } 569 570 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 571 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 572 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 573 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 574 a2dp_source_state = A2DP_STREAMING_OPENED; 575 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 576 break; 577 578 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 579 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 580 581 connection = avdtp_get_connection_for_avdtp_cid(cid); 582 btstack_assert(connection != NULL); 583 584 // reset discovery timer while remote is active 585 if (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) { 586 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(&a2dp_source_set_config_timer); 587 if ((avdtp_cid == 0) || (avdtp_cid != cid)) break; 588 log_info("Reset discovery timer"); 589 a2dp_source_set_config_timer_start(avdtp_cid); 590 break; 591 } 592 593 if (a2dp_source_cid != cid) break; 594 595 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 596 597 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), a2dp_source_state, cid); 598 599 switch (a2dp_source_state){ 600 case A2DP_GET_CAPABILITIES: 601 remote_seid = remote_seps[sc.active_remote_sep_index].seid; 602 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 603 avdtp_source_get_all_capabilities(cid, remote_seid); 604 return; 605 606 case A2DP_SET_CONFIGURATION: 607 remote_seid = sc.local_stream_endpoint->set_config_remote_seid; 608 log_info("A2DP initiate set configuration locally and wait for response ... local seid 0x%02x, remote seid 0x%02x", avdtp_stream_endpoint_seid(sc.local_stream_endpoint), remote_seid); 609 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 610 a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 611 avdtp_source_set_configuration(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), remote_seid, sc.local_stream_endpoint->remote_configuration_bitmap, sc.local_stream_endpoint->remote_configuration); 612 return; 613 614 case A2DP_W2_OPEN_STREAM_WITH_SEID: 615 log_info("A2DP open stream ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.local_stream_endpoint->remote_sep.seid); 616 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 617 a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 618 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.local_stream_endpoint->remote_sep.seid); 619 break; 620 621 case A2DP_W2_RECONFIGURE_WITH_SEID: 622 log_info("A2DP reconfigured ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.local_stream_endpoint->remote_sep.seid); 623 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), ERROR_CODE_SUCCESS); 624 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 625 a2dp_source_state = A2DP_STREAMING_OPENED; 626 break; 627 628 case A2DP_STREAMING_OPENED: 629 switch (signal_identifier){ 630 case AVDTP_SI_START: 631 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 632 break; 633 case AVDTP_SI_SUSPEND: 634 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 635 break; 636 case AVDTP_SI_ABORT: 637 case AVDTP_SI_CLOSE: 638 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 639 break; 640 default: 641 break; 642 } 643 break; 644 645 default: 646 break; 647 } 648 break; 649 650 case AVDTP_SUBEVENT_SIGNALING_REJECT: 651 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 652 if (a2dp_source_cid != cid) break; 653 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 654 655 connection = avdtp_get_connection_for_avdtp_cid(cid); 656 btstack_assert(connection != NULL); 657 658 connection->a2dp_source_state = A2DP_CONNECTED; 659 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 if (a2dp_source_cid != cid) break; 666 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 667 668 connection = avdtp_get_connection_for_avdtp_cid(cid); 669 btstack_assert(connection != NULL); 670 671 connection->a2dp_source_state = A2DP_CONNECTED; 672 a2dp_source_state = A2DP_CONNECTED; 673 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 674 break; 675 676 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 677 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 678 if (a2dp_source_cid != cid) break; 679 680 connection = avdtp_get_connection_for_avdtp_cid(cid); 681 btstack_assert(connection != NULL); 682 683 connection->a2dp_source_state = A2DP_CONFIGURED; 684 a2dp_source_state = A2DP_CONFIGURED; 685 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 686 break; 687 688 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 689 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 690 691 connection = avdtp_get_connection_for_avdtp_cid(cid); 692 btstack_assert(connection != NULL); 693 694 // connect/release are passed on to app 695 if (a2dp_source_cid == cid){ 696 stream_endpoint_configured = false; 697 sc.local_stream_endpoint = NULL; 698 699 connection->a2dp_source_state = A2DP_IDLE; 700 a2dp_source_state = A2DP_IDLE; 701 a2dp_source_cid = 0; 702 } 703 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 704 break; 705 706 default: 707 break; 708 } 709 } 710 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 711 btstack_assert(callback != NULL); 712 713 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 714 a2dp_source_packet_handler_user = callback; 715 } 716 717 void a2dp_source_init(void){ 718 // ok: does not matter 719 a2dp_source_state = A2DP_IDLE; 720 (void) memset(&sc, 0, sizeof(avdtp_stream_endpoint_context_t)); 721 722 avdtp_source_init(); 723 } 724 725 void a2dp_source_deinit(void){ 726 avdtp_source_deinit(); 727 728 outgoing_active = false; 729 stream_endpoint_configured = false; 730 a2dp_source_cid = 0; 731 num_remote_seps = 0; 732 } 733 734 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 735 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 736 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 737 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 738 if (!stream_endpoint){ 739 return NULL; 740 } 741 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 742 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 743 codec_capabilities, codec_capabilities_len); 744 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 745 746 // store user codec configuration buffer 747 stream_endpoint->media_codec_type = media_codec_type; 748 stream_endpoint->media_codec_configuration_info = codec_configuration; 749 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 750 751 return stream_endpoint; 752 } 753 754 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 755 avdtp_source_finalize_stream_endpoint(stream_endpoint); 756 } 757 758 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 759 if (outgoing_active || stream_endpoint_configured) { 760 return ERROR_CODE_COMMAND_DISALLOWED; 761 } 762 763 uint16_t outgoing_cid; 764 765 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 766 if (connection == NULL){ 767 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 768 if (status != ERROR_CODE_SUCCESS) { 769 // if there's already a connection for for remote addr, avdtp_source_connect fails, 770 // but the stream will get set-up nevertheless 771 return status; 772 } 773 outgoing_active = true; 774 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 775 btstack_assert(connection != NULL); 776 777 // stop sep discovery for other 778 if (a2dp_source_state != A2DP_IDLE){ 779 avdtp_connection_t * active_connection = avdtp_get_connection_for_avdtp_cid(a2dp_source_cid); 780 if (active_connection != NULL){ 781 // sdp discovery has started: post-pone action, reserve sep discovery mechanism 782 active_connection->a2dp_source_discover_seps = true; 783 } 784 } 785 // setup state 786 connection->a2dp_source_state = A2DP_W4_CONNECTED; 787 a2dp_source_state = A2DP_W4_CONNECTED; 788 a2dp_source_cid = outgoing_cid; 789 *avdtp_cid = outgoing_cid; 790 791 } else { 792 // check state 793 switch (a2dp_source_state){ 794 case A2DP_IDLE: 795 case A2DP_CONNECTED: 796 // restart process e.g. if there no suitable stream endpoints or they had been in use 797 outgoing_active = true; 798 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 799 a2dp_source_state = A2DP_DISCOVER_SEPS; 800 *avdtp_cid = connection->avdtp_cid; 801 a2dp_start_discovering_seps(connection); 802 break; 803 default: 804 return ERROR_CODE_COMMAND_DISALLOWED; 805 } 806 } 807 return ERROR_CODE_SUCCESS; 808 } 809 810 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 811 return avdtp_disconnect(avdtp_cid); 812 } 813 814 815 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 816 return avdtp_start_stream(avdtp_cid, local_seid); 817 } 818 819 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 820 return avdtp_suspend_stream(avdtp_cid, local_seid); 821 } 822 823 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 824 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 825 } 826 827 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 828 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 829 } 830 831 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){ 832 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 833 } 834 835 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){ 836 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 837 } 838 839 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 840 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 841 } 842 843 static uint8_t a2dp_source_config_init(uint8_t local_seid, uint8_t remote_seid, avdtp_media_codec_type_t codec_type) { 844 845 // lookup local stream endpoint 846 avdtp_stream_endpoint_t * local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 847 if (local_stream_endpoint == NULL){ 848 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 849 } 850 851 // lookup remote stream endpoint 852 avdtp_sep_t * remote_sep = NULL; 853 uint8_t i; 854 for (i=0;i<num_remote_seps;i++){ 855 if (remote_seps[i].seid == remote_seid){ 856 remote_sep = &remote_seps[i]; 857 } 858 } 859 if (remote_sep == NULL){ 860 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 861 } 862 863 // set media configuration 864 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 865 local_stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 866 local_stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 867 // remote seid to use 868 local_stream_endpoint->set_config_remote_seid = remote_seid; 869 // enable delay reporting if supported 870 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 871 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 872 } 873 874 // suitable Sink stream endpoint found, configure it 875 sc.local_stream_endpoint = local_stream_endpoint; 876 a2dp_source_have_config = true; 877 878 return ERROR_CODE_SUCCESS; 879 } 880 881 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){ 882 883 if (a2dp_source_cid != a2dp_cid){ 884 return ERROR_CODE_COMMAND_DISALLOWED; 885 } 886 887 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 888 if (connection == NULL){ 889 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 890 } 891 892 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_SBC); 893 if (status != 0) { 894 return status; 895 } 896 // set config in reserved buffer 897 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 898 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 899 avdtp_config_sbc_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 900 901 return ERROR_CODE_SUCCESS; 902 } 903 904 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){ 905 906 if (a2dp_source_cid != a2dp_cid){ 907 return ERROR_CODE_COMMAND_DISALLOWED; 908 } 909 910 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 911 if (connection == NULL){ 912 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 913 } 914 915 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 916 if (status != 0) { 917 return status; 918 } 919 920 // set config in reserved buffer 921 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 922 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 923 avdtp_config_mpeg_audio_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 924 925 return ERROR_CODE_SUCCESS; 926 } 927 928 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){ 929 930 if (a2dp_source_cid != a2dp_cid){ 931 return ERROR_CODE_COMMAND_DISALLOWED; 932 } 933 934 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 935 if (connection == NULL){ 936 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 937 } 938 939 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 940 if (status != 0) { 941 return status; 942 } 943 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 944 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 945 avdtp_config_mpeg_aac_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 946 947 return ERROR_CODE_SUCCESS; 948 } 949 950 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){ 951 952 if (a2dp_source_cid != a2dp_cid){ 953 return ERROR_CODE_COMMAND_DISALLOWED; 954 } 955 956 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 957 if (connection == NULL){ 958 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 959 } 960 961 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 962 if (status != 0) { 963 return status; 964 } 965 966 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 967 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 968 avdtp_config_atrac_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 969 970 return ERROR_CODE_SUCCESS; 971 } 972 973 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 974 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 975 if (a2dp_source_cid != a2dp_cid){ 976 return ERROR_CODE_COMMAND_DISALLOWED; 977 } 978 979 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 980 if (connection == NULL){ 981 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 982 } 983 984 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 985 if (status != 0) { 986 return status; 987 } 988 989 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 990 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 991 992 return status; 993 } 994 995 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 996 if (a2dp_source_cid != avdtp_cid){ 997 return ERROR_CODE_COMMAND_DISALLOWED; 998 } 999 1000 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 1001 if (connection == NULL){ 1002 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1003 } 1004 1005 if (a2dp_source_state != A2DP_STREAMING_OPENED) { 1006 return ERROR_CODE_COMMAND_DISALLOWED; 1007 } 1008 1009 btstack_assert(sc.local_stream_endpoint != NULL); 1010 1011 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 1012 1013 avdtp_media_codec_type_t codec_type = sc.local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 1014 uint8_t codec_info_len; 1015 switch (codec_type){ 1016 case AVDTP_CODEC_SBC: 1017 codec_info_len = 4; 1018 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1019 avdtp_config_sbc_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 1020 break; 1021 case AVDTP_CODEC_MPEG_1_2_AUDIO: 1022 codec_info_len = 4; 1023 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1024 avdtp_config_mpeg_audio_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 1025 break; 1026 case AVDTP_CODEC_MPEG_2_4_AAC: 1027 codec_info_len = 6; 1028 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1029 avdtp_config_mpeg_aac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 1030 break; 1031 case AVDTP_CODEC_ATRAC_FAMILY: 1032 codec_info_len = 7; 1033 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1034 avdtp_config_atrac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 1035 break; 1036 default: 1037 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1038 } 1039 1040 avdtp_capabilities_t new_configuration; 1041 new_configuration.media_codec.media_type = AVDTP_AUDIO; 1042 new_configuration.media_codec.media_codec_type = codec_type; 1043 new_configuration.media_codec.media_codec_information_len = codec_info_len; 1044 new_configuration.media_codec.media_codec_information = sc.local_stream_endpoint->media_codec_info; 1045 1046 // start reconfigure 1047 a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 1048 1049 return avdtp_source_reconfigure( 1050 avdtp_cid, 1051 avdtp_stream_endpoint_seid(sc.local_stream_endpoint), 1052 sc.local_stream_endpoint->remote_sep.seid, 1053 1 << AVDTP_MEDIA_CODEC, 1054 new_configuration 1055 ); 1056 } 1057