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 connection = avdtp_get_connection_for_avdtp_cid(cid); 351 btstack_assert(connection != NULL); 352 353 if (a2dp_source_cid != cid) break; 354 if (a2dp_source_state == A2DP_DISCOVER_SEPS) { 355 avdtp_sep_t sep; 356 memset(&sep, 0, sizeof(avdtp_sep_t)); 357 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 358 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 359 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 360 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 361 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 362 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 363 num_remote_seps); 364 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 365 remote_seps[num_remote_seps++] = sep; 366 } 367 } 368 break; 369 370 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 371 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 372 connection = avdtp_get_connection_for_avdtp_cid(cid); 373 btstack_assert(connection != NULL); 374 375 if (a2dp_source_cid != cid) break; 376 if (a2dp_source_state != A2DP_DISCOVER_SEPS) break; 377 378 if (num_remote_seps > 0){ 379 a2dp_source_state = A2DP_GET_CAPABILITIES; 380 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 381 sc.active_remote_sep_index = 0; 382 a2dp_source_have_config = false; 383 } else { 384 if (outgoing_active){ 385 outgoing_active = false; 386 connection = avdtp_get_connection_for_avdtp_cid(cid); 387 btstack_assert(connection != NULL); 388 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 389 } 390 391 // continue 392 connection->a2dp_source_state = A2DP_CONNECTED; 393 a2dp_source_state = A2DP_CONNECTED; 394 a2dp_discover_seps_with_next_waiting_connection(); 395 } 396 break; 397 398 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 399 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 400 connection = avdtp_get_connection_for_avdtp_cid(cid); 401 btstack_assert(connection != NULL); 402 403 if (a2dp_source_cid != cid) break; 404 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 405 406 // forward codec capability 407 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 408 409 // select SEP if none configured yet 410 if (a2dp_source_have_config == false){ 411 // find SBC stream endpoint 412 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 413 if (stream_endpoint != NULL){ 414 // choose SBC config params 415 avdtp_configuration_sbc_t configuration; 416 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 417 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 418 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 419 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 420 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 421 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 422 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 423 424 // and pre-select this endpoint 425 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 426 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 427 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 428 } 429 } 430 break; 431 432 // forward codec capability 433 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 434 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 435 connection = avdtp_get_connection_for_avdtp_cid(cid); 436 btstack_assert(connection != NULL); 437 438 if (a2dp_source_cid != cid) break; 439 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 440 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 441 break; 442 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 443 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 444 connection = avdtp_get_connection_for_avdtp_cid(cid); 445 btstack_assert(connection != NULL); 446 447 if (a2dp_source_cid != cid) break; 448 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 449 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 450 break; 451 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 452 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 453 connection = avdtp_get_connection_for_avdtp_cid(cid); 454 btstack_assert(connection != NULL); 455 456 if (a2dp_source_cid != cid) break; 457 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 458 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 459 break; 460 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 461 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 462 connection = avdtp_get_connection_for_avdtp_cid(cid); 463 btstack_assert(connection != NULL); 464 465 if (a2dp_source_cid != cid) break; 466 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 467 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 468 break; 469 470 // not forwarded 471 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 472 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 473 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 474 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 475 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 476 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 477 break; 478 479 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 480 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 481 connection = avdtp_get_connection_for_avdtp_cid(cid); 482 btstack_assert(connection != NULL); 483 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, a2dp_source_state); 484 485 if (a2dp_source_cid != cid) break; 486 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 487 488 // store delay reporting capability 489 remote_seps[sc.active_remote_sep_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 490 491 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 492 break; 493 494 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 495 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 496 connection = avdtp_get_connection_for_avdtp_cid(cid); 497 btstack_assert(connection != NULL); 498 499 if (a2dp_source_cid != cid) break; 500 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 501 502 // forward capabilities done for endpoint 503 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 504 505 // endpoint was not suitable, check next one 506 sc.active_remote_sep_index++; 507 if (sc.active_remote_sep_index >= num_remote_seps){ 508 509 // emit 'all capabilities for all seps reported' 510 uint8_t event[6]; 511 uint8_t pos = 0; 512 event[pos++] = HCI_EVENT_A2DP_META; 513 event[pos++] = sizeof(event) - 2; 514 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 515 little_endian_store_16(event, pos, cid); 516 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 517 518 // do we have a valid config? 519 if (a2dp_source_have_config){ 520 a2dp_source_state = A2DP_SET_CONFIGURATION; 521 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 522 a2dp_source_have_config = false; 523 break; 524 } 525 526 // we didn't find a suitable SBC stream endpoint, sorry. 527 if (outgoing_active){ 528 outgoing_active = false; 529 connection = avdtp_get_connection_for_avdtp_cid(cid); 530 btstack_assert(connection != NULL); 531 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 532 } 533 connection->a2dp_source_state = A2DP_CONNECTED; 534 a2dp_discover_seps_with_next_waiting_connection(); 535 } 536 break; 537 538 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 539 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 540 connection = avdtp_get_connection_for_avdtp_cid(cid); 541 btstack_assert(connection != NULL); 542 543 if (a2dp_source_cid != cid) break; 544 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 545 break; 546 547 // forward codec configuration 548 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 549 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 550 a2dp_handle_received_configuration(packet, local_seid); 551 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 552 break; 553 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 554 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 555 a2dp_handle_received_configuration(packet, local_seid); 556 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 557 break; 558 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 559 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 560 a2dp_handle_received_configuration(packet, local_seid); 561 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 562 break; 563 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 564 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 565 a2dp_handle_received_configuration(packet, local_seid); 566 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 567 break; 568 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 569 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 570 a2dp_handle_received_configuration(packet, local_seid); 571 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 572 break; 573 574 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 575 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 576 break; 577 578 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 579 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 580 connection = avdtp_get_connection_for_avdtp_cid(cid); 581 btstack_assert(connection != NULL); 582 583 if (a2dp_source_cid != cid) break; 584 if (a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 585 586 outgoing_active = false; 587 status = avdtp_subevent_streaming_connection_established_get_status(packet); 588 if (status != ERROR_CODE_SUCCESS){ 589 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 590 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 591 break; 592 } 593 594 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 595 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 596 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 597 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 598 a2dp_source_state = A2DP_STREAMING_OPENED; 599 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 600 break; 601 602 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 603 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 604 connection = avdtp_get_connection_for_avdtp_cid(cid); 605 btstack_assert(connection != NULL); 606 607 // reset discovery timer while remote is active 608 if (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) { 609 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(&a2dp_source_set_config_timer); 610 if ((avdtp_cid == 0) || (avdtp_cid != cid)) break; 611 log_info("Reset discovery timer"); 612 a2dp_source_set_config_timer_start(avdtp_cid); 613 break; 614 } 615 616 if (a2dp_source_cid != cid) break; 617 618 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 619 620 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), a2dp_source_state, cid); 621 622 switch (a2dp_source_state){ 623 case A2DP_GET_CAPABILITIES: 624 remote_seid = remote_seps[sc.active_remote_sep_index].seid; 625 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 626 avdtp_source_get_all_capabilities(cid, remote_seid); 627 return; 628 629 case A2DP_SET_CONFIGURATION: 630 remote_seid = sc.local_stream_endpoint->set_config_remote_seid; 631 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); 632 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 633 a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 634 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); 635 return; 636 637 case A2DP_W2_OPEN_STREAM_WITH_SEID: 638 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); 639 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 640 a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 641 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.local_stream_endpoint->remote_sep.seid); 642 break; 643 644 case A2DP_W2_RECONFIGURE_WITH_SEID: 645 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); 646 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), ERROR_CODE_SUCCESS); 647 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 648 a2dp_source_state = A2DP_STREAMING_OPENED; 649 break; 650 651 case A2DP_STREAMING_OPENED: 652 switch (signal_identifier){ 653 case AVDTP_SI_START: 654 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 655 break; 656 case AVDTP_SI_SUSPEND: 657 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 658 break; 659 case AVDTP_SI_ABORT: 660 case AVDTP_SI_CLOSE: 661 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 662 break; 663 default: 664 break; 665 } 666 break; 667 668 default: 669 break; 670 } 671 break; 672 673 case AVDTP_SUBEVENT_SIGNALING_REJECT: 674 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 675 connection = avdtp_get_connection_for_avdtp_cid(cid); 676 btstack_assert(connection != NULL); 677 678 if (a2dp_source_cid != cid) break; 679 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 680 681 connection->a2dp_source_state = A2DP_CONNECTED; 682 a2dp_source_state = A2DP_CONNECTED; 683 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 684 break; 685 686 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 687 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 688 connection = avdtp_get_connection_for_avdtp_cid(cid); 689 btstack_assert(connection != NULL); 690 691 if (a2dp_source_cid != cid) break; 692 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 693 694 connection->a2dp_source_state = A2DP_CONNECTED; 695 a2dp_source_state = A2DP_CONNECTED; 696 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 697 break; 698 699 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 700 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 701 connection = avdtp_get_connection_for_avdtp_cid(cid); 702 btstack_assert(connection != NULL); 703 704 if (a2dp_source_cid != cid) break; 705 706 connection->a2dp_source_state = A2DP_CONFIGURED; 707 a2dp_source_state = A2DP_CONFIGURED; 708 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 709 break; 710 711 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 712 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 713 connection = avdtp_get_connection_for_avdtp_cid(cid); 714 btstack_assert(connection != NULL); 715 716 // connect/release are passed on to app 717 if (a2dp_source_cid == cid){ 718 stream_endpoint_configured = false; 719 sc.local_stream_endpoint = NULL; 720 721 connection->a2dp_source_state = A2DP_IDLE; 722 a2dp_source_state = A2DP_IDLE; 723 a2dp_source_cid = 0; 724 } 725 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 726 break; 727 728 default: 729 break; 730 } 731 } 732 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 733 btstack_assert(callback != NULL); 734 735 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 736 a2dp_source_packet_handler_user = callback; 737 } 738 739 void a2dp_source_init(void){ 740 // ok: does not matter 741 a2dp_source_state = A2DP_IDLE; 742 (void) memset(&sc, 0, sizeof(avdtp_stream_endpoint_context_t)); 743 744 avdtp_source_init(); 745 } 746 747 void a2dp_source_deinit(void){ 748 avdtp_source_deinit(); 749 750 outgoing_active = false; 751 stream_endpoint_configured = false; 752 a2dp_source_cid = 0; 753 num_remote_seps = 0; 754 } 755 756 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 757 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 758 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 759 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 760 if (!stream_endpoint){ 761 return NULL; 762 } 763 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 764 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 765 codec_capabilities, codec_capabilities_len); 766 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 767 768 // store user codec configuration buffer 769 stream_endpoint->media_codec_type = media_codec_type; 770 stream_endpoint->media_codec_configuration_info = codec_configuration; 771 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 772 773 return stream_endpoint; 774 } 775 776 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 777 avdtp_source_finalize_stream_endpoint(stream_endpoint); 778 } 779 780 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 781 if (outgoing_active || stream_endpoint_configured) { 782 return ERROR_CODE_COMMAND_DISALLOWED; 783 } 784 785 uint16_t outgoing_cid; 786 787 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 788 if (connection == NULL){ 789 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 790 if (status != ERROR_CODE_SUCCESS) { 791 // if there's already a connection for for remote addr, avdtp_source_connect fails, 792 // but the stream will get set-up nevertheless 793 return status; 794 } 795 outgoing_active = true; 796 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 797 btstack_assert(connection != NULL); 798 799 // stop sep discovery for other 800 if (a2dp_source_state != A2DP_IDLE){ 801 avdtp_connection_t * active_connection = avdtp_get_connection_for_avdtp_cid(a2dp_source_cid); 802 if (active_connection != NULL){ 803 // sdp discovery has started: post-pone action, reserve sep discovery mechanism 804 active_connection->a2dp_source_discover_seps = true; 805 } 806 } 807 // setup state 808 connection->a2dp_source_state = A2DP_W4_CONNECTED; 809 a2dp_source_state = A2DP_W4_CONNECTED; 810 a2dp_source_cid = outgoing_cid; 811 *avdtp_cid = outgoing_cid; 812 813 } else { 814 // check state 815 switch (a2dp_source_state){ 816 case A2DP_IDLE: 817 case A2DP_CONNECTED: 818 // restart process e.g. if there no suitable stream endpoints or they had been in use 819 outgoing_active = true; 820 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 821 a2dp_source_state = A2DP_DISCOVER_SEPS; 822 *avdtp_cid = connection->avdtp_cid; 823 a2dp_start_discovering_seps(connection); 824 break; 825 default: 826 return ERROR_CODE_COMMAND_DISALLOWED; 827 } 828 } 829 return ERROR_CODE_SUCCESS; 830 } 831 832 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 833 return avdtp_disconnect(avdtp_cid); 834 } 835 836 837 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 838 return avdtp_start_stream(avdtp_cid, local_seid); 839 } 840 841 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 842 return avdtp_suspend_stream(avdtp_cid, local_seid); 843 } 844 845 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 846 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 847 } 848 849 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 850 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 851 } 852 853 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){ 854 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 855 } 856 857 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){ 858 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 859 } 860 861 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 862 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 863 } 864 865 static uint8_t a2dp_source_config_init(uint8_t local_seid, uint8_t remote_seid, avdtp_media_codec_type_t codec_type) { 866 867 // lookup local stream endpoint 868 avdtp_stream_endpoint_t * local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 869 if (local_stream_endpoint == NULL){ 870 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 871 } 872 873 // lookup remote stream endpoint 874 avdtp_sep_t * remote_sep = NULL; 875 uint8_t i; 876 for (i=0;i<num_remote_seps;i++){ 877 if (remote_seps[i].seid == remote_seid){ 878 remote_sep = &remote_seps[i]; 879 } 880 } 881 if (remote_sep == NULL){ 882 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 883 } 884 885 // set media configuration 886 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 887 local_stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 888 local_stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 889 // remote seid to use 890 local_stream_endpoint->set_config_remote_seid = remote_seid; 891 // enable delay reporting if supported 892 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 893 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 894 } 895 896 // suitable Sink stream endpoint found, configure it 897 sc.local_stream_endpoint = local_stream_endpoint; 898 a2dp_source_have_config = true; 899 900 return ERROR_CODE_SUCCESS; 901 } 902 903 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){ 904 905 if (a2dp_source_cid != a2dp_cid){ 906 return ERROR_CODE_COMMAND_DISALLOWED; 907 } 908 909 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 910 if (connection == NULL){ 911 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 912 } 913 914 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_SBC); 915 if (status != 0) { 916 return status; 917 } 918 // set config in reserved buffer 919 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 920 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 921 avdtp_config_sbc_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 922 923 return ERROR_CODE_SUCCESS; 924 } 925 926 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){ 927 928 if (a2dp_source_cid != a2dp_cid){ 929 return ERROR_CODE_COMMAND_DISALLOWED; 930 } 931 932 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 933 if (connection == NULL){ 934 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 935 } 936 937 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 938 if (status != 0) { 939 return status; 940 } 941 942 // set config in reserved buffer 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 = 4; 945 avdtp_config_mpeg_audio_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_mpeg_aac(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_mpeg_aac_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_MPEG_2_4_AAC); 962 if (status != 0) { 963 return status; 964 } 965 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 966 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 967 avdtp_config_mpeg_aac_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 968 969 return ERROR_CODE_SUCCESS; 970 } 971 972 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){ 973 974 if (a2dp_source_cid != a2dp_cid){ 975 return ERROR_CODE_COMMAND_DISALLOWED; 976 } 977 978 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 979 if (connection == NULL){ 980 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 981 } 982 983 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 984 if (status != 0) { 985 return status; 986 } 987 988 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 989 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 990 avdtp_config_atrac_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 991 992 return ERROR_CODE_SUCCESS; 993 } 994 995 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 996 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 997 if (a2dp_source_cid != a2dp_cid){ 998 return ERROR_CODE_COMMAND_DISALLOWED; 999 } 1000 1001 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 1002 if (connection == NULL){ 1003 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1004 } 1005 1006 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 1007 if (status != 0) { 1008 return status; 1009 } 1010 1011 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 1012 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 1013 1014 return status; 1015 } 1016 1017 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 1018 if (a2dp_source_cid != avdtp_cid){ 1019 return ERROR_CODE_COMMAND_DISALLOWED; 1020 } 1021 1022 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 1023 if (connection == NULL){ 1024 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1025 } 1026 1027 if (a2dp_source_state != A2DP_STREAMING_OPENED) { 1028 return ERROR_CODE_COMMAND_DISALLOWED; 1029 } 1030 1031 btstack_assert(sc.local_stream_endpoint != NULL); 1032 1033 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 1034 1035 avdtp_media_codec_type_t codec_type = sc.local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 1036 uint8_t codec_info_len; 1037 switch (codec_type){ 1038 case AVDTP_CODEC_SBC: 1039 codec_info_len = 4; 1040 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1041 avdtp_config_sbc_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 1042 break; 1043 case AVDTP_CODEC_MPEG_1_2_AUDIO: 1044 codec_info_len = 4; 1045 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1046 avdtp_config_mpeg_audio_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 1047 break; 1048 case AVDTP_CODEC_MPEG_2_4_AAC: 1049 codec_info_len = 6; 1050 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1051 avdtp_config_mpeg_aac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 1052 break; 1053 case AVDTP_CODEC_ATRAC_FAMILY: 1054 codec_info_len = 7; 1055 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1056 avdtp_config_atrac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 1057 break; 1058 default: 1059 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1060 } 1061 1062 avdtp_capabilities_t new_configuration; 1063 new_configuration.media_codec.media_type = AVDTP_AUDIO; 1064 new_configuration.media_codec.media_codec_type = codec_type; 1065 new_configuration.media_codec.media_codec_information_len = codec_info_len; 1066 new_configuration.media_codec.media_codec_information = sc.local_stream_endpoint->media_codec_info; 1067 1068 // start reconfigure 1069 a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 1070 1071 return avdtp_source_reconfigure( 1072 avdtp_cid, 1073 avdtp_stream_endpoint_seid(sc.local_stream_endpoint), 1074 sc.local_stream_endpoint->remote_sep.seid, 1075 1 << AVDTP_MEDIA_CODEC, 1076 new_configuration 1077 ); 1078 } 1079