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 uint16_t a2dp_source_cid; 84 static uint16_t num_remote_seps; 85 static avdtp_sep_t remote_seps[AVDTP_MAX_SEP_NUM]; 86 87 static bool a2dp_source_have_config; 88 89 static bool stream_endpoint_configured; 90 91 static avdtp_stream_endpoint_context_t sc; 92 static btstack_packet_handler_t a2dp_source_packet_handler_user; 93 94 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 95 static void a2dp_discover_seps_with_next_waiting_connection(void); 96 97 static void a2dp_source_streaming_emit_connection_failed(avdtp_connection_t *connection, uint8_t status) { 98 uint8_t event[14]; 99 int pos = 0; 100 event[pos++] = HCI_EVENT_A2DP_META; 101 event[pos++] = sizeof(event) - 2; 102 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 103 little_endian_store_16(event, pos, connection->avdtp_cid); 104 pos += 2; 105 reverse_bd_addr(connection->remote_addr, &event[pos]); 106 pos += 6; 107 event[pos++] = 0; 108 event[pos++] = 0; 109 event[pos++] = status; 110 111 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 112 } 113 114 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){ 115 uint8_t* attribute; 116 de_create_sequence(service); 117 118 // 0x0000 "Service Record Handle" 119 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 120 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 121 122 // 0x0001 "Service Class ID List" 123 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 124 attribute = de_push_sequence(service); 125 { 126 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); 127 } 128 de_pop_sequence(service, attribute); 129 130 // 0x0004 "Protocol Descriptor List" 131 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 132 attribute = de_push_sequence(service); 133 { 134 uint8_t* l2cpProtocol = de_push_sequence(attribute); 135 { 136 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 137 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 138 } 139 de_pop_sequence(attribute, l2cpProtocol); 140 141 uint8_t* avProtocol = de_push_sequence(attribute); 142 { 143 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 144 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 145 } 146 de_pop_sequence(attribute, avProtocol); 147 } 148 de_pop_sequence(service, attribute); 149 150 // 0x0005 "Public Browse Group" 151 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 152 attribute = de_push_sequence(service); 153 { 154 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 155 } 156 de_pop_sequence(service, attribute); 157 158 // 0x0009 "Bluetooth Profile Descriptor List" 159 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 160 attribute = de_push_sequence(service); 161 { 162 uint8_t *a2dProfile = de_push_sequence(attribute); 163 { 164 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 165 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 166 } 167 de_pop_sequence(attribute, a2dProfile); 168 } 169 de_pop_sequence(service, attribute); 170 171 172 // 0x0100 "Service Name" 173 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 174 if (service_name){ 175 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 176 } else { 177 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_name), (uint8_t *) default_a2dp_source_service_name); 178 } 179 180 // 0x0100 "Provider Name" 181 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 182 if (service_provider_name){ 183 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 184 } else { 185 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_provider_name), (uint8_t *) default_a2dp_source_service_provider_name); 186 } 187 188 // 0x0311 "Supported Features" 189 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 190 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 191 } 192 193 static void a2dp_signaling_emit_reconfigured(uint16_t cid, uint8_t local_seid, uint8_t status){ 194 uint8_t event[7]; 195 int pos = 0; 196 event[pos++] = HCI_EVENT_A2DP_META; 197 event[pos++] = sizeof(event) - 2; 198 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 199 little_endian_store_16(event, pos, cid); 200 pos += 2; 201 event[pos++] = local_seid; 202 event[pos++] = status; 203 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 204 } 205 206 static void a2dp_source_discover_stream_endpoints(uint16_t avdtp_cid){ 207 a2dp_source_cid = avdtp_cid; 208 avdtp_source_discover_stream_endpoints(avdtp_cid); 209 } 210 211 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 212 if (stream_endpoint_configured) return; 213 214 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 215 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 216 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 217 218 if (connection == NULL) { 219 log_info("a2dp_discover_seps_with_next_waiting_connection"); 220 a2dp_discover_seps_with_next_waiting_connection(); 221 return; 222 } 223 224 a2dp_source_discover_stream_endpoints(avdtp_cid); 225 } 226 227 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 228 log_info("a2dp_source_set_config_timer_start cid 0%02x", avdtp_cid); 229 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 230 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 231 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 232 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 233 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 234 } 235 236 static void a2dp_source_set_config_timer_stop(void){ 237 log_info("a2dp_source_set_config_timer_stop"); 238 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 239 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 240 } 241 242 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 243 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 244 sc.active_remote_sep_index = 0; 245 num_remote_seps = 0; 246 memset(remote_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 247 connection->a2dp_source_discover_seps = false; 248 249 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 250 if (outgoing_active && (a2dp_source_cid == connection->avdtp_cid)){ 251 log_info("discover seps"); 252 a2dp_source_discover_stream_endpoints(connection->avdtp_cid); 253 } else { 254 log_info("wait a bit, then discover seps"); 255 a2dp_source_set_config_timer_start(connection->avdtp_cid); 256 } 257 } 258 259 static void a2dp_discover_seps_with_next_waiting_connection(void){ 260 btstack_linked_list_iterator_t it; 261 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 262 while (btstack_linked_list_iterator_has_next(&it)){ 263 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 264 if (!next_connection->a2dp_source_discover_seps) continue; 265 a2dp_start_discovering_seps(next_connection); 266 } 267 } 268 269 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 270 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 271 avdtp_connection_t * avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); 272 btstack_assert(avdtp_connection != NULL); 273 if ((a2dp_source_cid == cid) && (avdtp_connection->a2dp_source_state == A2DP_W4_SET_CONFIGURATION)){ 274 // outgoing: discovery and config of remote sink sep successful, trigger stream open 275 avdtp_connection->a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 276 } else { 277 // incoming: accept cid, lookup local stream endpoint and wait for stream open 278 a2dp_source_cid = cid; 279 sc.local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 280 btstack_assert(sc.local_stream_endpoint != NULL); 281 avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 282 } 283 284 // config set: stop timer 285 a2dp_source_set_config_timer_stop(); 286 stream_endpoint_configured = true; 287 } 288 289 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 290 UNUSED(channel); 291 UNUSED(size); 292 293 uint16_t cid; 294 avdtp_connection_t * connection; 295 296 uint8_t signal_identifier; 297 uint8_t status; 298 uint8_t local_seid; 299 uint8_t remote_seid; 300 301 if (packet_type != HCI_EVENT_PACKET) return; 302 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 303 304 switch (packet[2]){ 305 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 306 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 307 connection = avdtp_get_connection_for_avdtp_cid(cid); 308 btstack_assert(connection != NULL); 309 310 status = avdtp_subevent_signaling_connection_established_get_status(packet); 311 if (status != ERROR_CODE_SUCCESS){ 312 // notify about connection error only if we're initiator 313 if (outgoing_active && (a2dp_source_cid == cid)){ 314 log_info("A2DP source signaling connection failed status 0x%02x", status); 315 outgoing_active = false; 316 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 317 } 318 break; 319 } 320 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 321 322 // notify app 323 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 324 325 // we already have a valid setup 326 if (stream_endpoint_configured) return; 327 328 // start discover seps now if: 329 // - outgoing active: signaling for outgoing connection 330 // - outgoing not active: incoming connection and no sep discover ongoing 331 332 log_info("outgoing_active %d, current avdtp cid 0x%02x, a2dp_source_state %d", outgoing_active, cid, connection->a2dp_source_state); 333 if ((outgoing_active && (a2dp_source_cid == cid)) || (!outgoing_active && (connection->a2dp_source_state == A2DP_IDLE))){ 334 a2dp_start_discovering_seps(connection); 335 } else { 336 // post-pone sep discovery 337 connection->a2dp_source_discover_seps = true; 338 } 339 break; 340 341 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 342 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 343 connection = avdtp_get_connection_for_avdtp_cid(cid); 344 btstack_assert(connection != NULL); 345 346 if (connection->a2dp_source_state == A2DP_DISCOVER_SEPS) { 347 avdtp_sep_t sep; 348 memset(&sep, 0, sizeof(avdtp_sep_t)); 349 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 350 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 351 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 352 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 353 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 354 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 355 num_remote_seps); 356 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 357 remote_seps[num_remote_seps++] = sep; 358 } 359 } 360 break; 361 362 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 363 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 364 connection = avdtp_get_connection_for_avdtp_cid(cid); 365 btstack_assert(connection != NULL); 366 367 if (connection->a2dp_source_state != A2DP_DISCOVER_SEPS) break; 368 369 if (num_remote_seps > 0){ 370 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 371 sc.active_remote_sep_index = 0; 372 a2dp_source_have_config = false; 373 } else { 374 if (outgoing_active){ 375 outgoing_active = false; 376 connection = avdtp_get_connection_for_avdtp_cid(cid); 377 btstack_assert(connection != NULL); 378 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 379 } 380 381 // continue 382 connection->a2dp_source_state = A2DP_CONNECTED; 383 a2dp_discover_seps_with_next_waiting_connection(); 384 } 385 break; 386 387 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 388 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 389 connection = avdtp_get_connection_for_avdtp_cid(cid); 390 btstack_assert(connection != NULL); 391 392 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 393 394 // forward codec capability 395 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 396 397 // select SEP if none configured yet 398 if (a2dp_source_have_config == false){ 399 // find SBC stream endpoint 400 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 401 if (stream_endpoint != NULL){ 402 // choose SBC config params 403 avdtp_configuration_sbc_t configuration; 404 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 405 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 406 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 407 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 408 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 409 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 410 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 411 412 // and pre-select this endpoint 413 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 414 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 415 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 416 } 417 } 418 break; 419 420 // forward codec capability 421 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 422 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 423 connection = avdtp_get_connection_for_avdtp_cid(cid); 424 btstack_assert(connection != NULL); 425 426 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 427 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 428 break; 429 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 430 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 431 connection = avdtp_get_connection_for_avdtp_cid(cid); 432 btstack_assert(connection != NULL); 433 434 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 435 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 436 break; 437 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 438 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 439 connection = avdtp_get_connection_for_avdtp_cid(cid); 440 btstack_assert(connection != NULL); 441 442 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 443 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 444 break; 445 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 446 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 447 connection = avdtp_get_connection_for_avdtp_cid(cid); 448 btstack_assert(connection != NULL); 449 450 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 451 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 452 break; 453 454 // not forwarded 455 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 456 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 457 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 458 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 459 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 460 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 461 break; 462 463 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 464 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 465 connection = avdtp_get_connection_for_avdtp_cid(cid); 466 btstack_assert(connection != NULL); 467 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_state); 468 469 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 470 471 // store delay reporting capability 472 remote_seps[sc.active_remote_sep_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 473 474 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 475 break; 476 477 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 478 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 479 connection = avdtp_get_connection_for_avdtp_cid(cid); 480 btstack_assert(connection != NULL); 481 482 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 483 484 // forward capabilities done for endpoint 485 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 486 487 // endpoint was not suitable, check next one 488 sc.active_remote_sep_index++; 489 if (sc.active_remote_sep_index >= num_remote_seps){ 490 491 // emit 'all capabilities for all seps reported' 492 uint8_t event[6]; 493 uint8_t pos = 0; 494 event[pos++] = HCI_EVENT_A2DP_META; 495 event[pos++] = sizeof(event) - 2; 496 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 497 little_endian_store_16(event, pos, cid); 498 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 499 500 // do we have a valid config? 501 if (a2dp_source_have_config){ 502 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 503 a2dp_source_have_config = false; 504 break; 505 } 506 507 // we didn't find a suitable SBC stream endpoint, sorry. 508 if (outgoing_active){ 509 outgoing_active = false; 510 connection = avdtp_get_connection_for_avdtp_cid(cid); 511 btstack_assert(connection != NULL); 512 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 513 } 514 connection->a2dp_source_state = A2DP_CONNECTED; 515 a2dp_discover_seps_with_next_waiting_connection(); 516 } 517 break; 518 519 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 520 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 521 connection = avdtp_get_connection_for_avdtp_cid(cid); 522 btstack_assert(connection != NULL); 523 524 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 525 break; 526 527 // forward codec configuration 528 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 529 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 530 a2dp_handle_received_configuration(packet, local_seid); 531 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 532 break; 533 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 534 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 535 a2dp_handle_received_configuration(packet, local_seid); 536 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 537 break; 538 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 539 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 540 a2dp_handle_received_configuration(packet, local_seid); 541 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 542 break; 543 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 544 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 545 a2dp_handle_received_configuration(packet, local_seid); 546 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 547 break; 548 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_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_OTHER_CONFIGURATION); 552 break; 553 554 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 555 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 556 break; 557 558 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 559 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 560 connection = avdtp_get_connection_for_avdtp_cid(cid); 561 btstack_assert(connection != NULL); 562 563 if (connection->a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 564 565 outgoing_active = false; 566 status = avdtp_subevent_streaming_connection_established_get_status(packet); 567 if (status != ERROR_CODE_SUCCESS){ 568 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 569 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 570 break; 571 } 572 573 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 574 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 575 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 576 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 577 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 578 break; 579 580 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 581 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 582 connection = avdtp_get_connection_for_avdtp_cid(cid); 583 btstack_assert(connection != NULL); 584 585 // reset discovery timer while remote is active 586 if (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) { 587 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(&a2dp_source_set_config_timer); 588 if ((avdtp_cid == 0) || (avdtp_cid != cid)) break; 589 log_info("Reset discovery timer"); 590 a2dp_source_set_config_timer_start(avdtp_cid); 591 break; 592 } 593 594 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 595 596 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_state, cid); 597 598 switch (connection->a2dp_source_state){ 599 case A2DP_GET_CAPABILITIES: 600 remote_seid = remote_seps[sc.active_remote_sep_index].seid; 601 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 602 avdtp_source_get_all_capabilities(cid, remote_seid); 603 return; 604 605 case A2DP_SET_CONFIGURATION: 606 remote_seid = sc.local_stream_endpoint->set_config_remote_seid; 607 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); 608 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 609 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); 610 return; 611 612 case A2DP_W2_OPEN_STREAM_WITH_SEID: 613 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); 614 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 615 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.local_stream_endpoint->remote_sep.seid); 616 break; 617 618 case A2DP_W2_RECONFIGURE_WITH_SEID: 619 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); 620 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), ERROR_CODE_SUCCESS); 621 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 622 break; 623 624 case A2DP_STREAMING_OPENED: 625 switch (signal_identifier){ 626 case AVDTP_SI_START: 627 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 628 break; 629 case AVDTP_SI_SUSPEND: 630 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 631 break; 632 case AVDTP_SI_ABORT: 633 case AVDTP_SI_CLOSE: 634 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 635 break; 636 default: 637 break; 638 } 639 break; 640 641 default: 642 break; 643 } 644 break; 645 646 case AVDTP_SUBEVENT_SIGNALING_REJECT: 647 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 648 connection = avdtp_get_connection_for_avdtp_cid(cid); 649 btstack_assert(connection != NULL); 650 651 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 652 653 connection->a2dp_source_state = A2DP_CONNECTED; 654 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 655 break; 656 657 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 658 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 659 connection = avdtp_get_connection_for_avdtp_cid(cid); 660 btstack_assert(connection != NULL); 661 662 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 663 664 connection->a2dp_source_state = A2DP_CONNECTED; 665 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 666 break; 667 668 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 669 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 670 connection = avdtp_get_connection_for_avdtp_cid(cid); 671 btstack_assert(connection != NULL); 672 673 connection->a2dp_source_state = A2DP_CONFIGURED; 674 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 675 break; 676 677 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 678 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 679 connection = avdtp_get_connection_for_avdtp_cid(cid); 680 btstack_assert(connection != NULL); 681 682 // connect/release are passed on to app 683 if (a2dp_source_cid == cid){ 684 stream_endpoint_configured = false; 685 sc.local_stream_endpoint = NULL; 686 687 connection->a2dp_source_state = A2DP_IDLE; 688 a2dp_source_cid = 0; 689 } 690 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 691 break; 692 693 default: 694 break; 695 } 696 } 697 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 698 btstack_assert(callback != NULL); 699 700 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 701 a2dp_source_packet_handler_user = callback; 702 } 703 704 void a2dp_source_init(void){ 705 (void) memset(&sc, 0, sizeof(avdtp_stream_endpoint_context_t)); 706 707 avdtp_source_init(); 708 } 709 710 void a2dp_source_deinit(void){ 711 avdtp_source_deinit(); 712 713 outgoing_active = false; 714 stream_endpoint_configured = false; 715 a2dp_source_cid = 0; 716 num_remote_seps = 0; 717 } 718 719 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 720 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 721 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 722 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 723 if (!stream_endpoint){ 724 return NULL; 725 } 726 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 727 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 728 codec_capabilities, codec_capabilities_len); 729 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 730 731 // store user codec configuration buffer 732 stream_endpoint->media_codec_type = media_codec_type; 733 stream_endpoint->media_codec_configuration_info = codec_configuration; 734 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 735 736 return stream_endpoint; 737 } 738 739 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 740 avdtp_source_finalize_stream_endpoint(stream_endpoint); 741 } 742 743 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 744 if (outgoing_active || stream_endpoint_configured) { 745 return ERROR_CODE_COMMAND_DISALLOWED; 746 } 747 748 uint16_t outgoing_cid; 749 750 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 751 if (connection == NULL){ 752 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 753 if (status != ERROR_CODE_SUCCESS) { 754 // if there's already a connection for for remote addr, avdtp_source_connect fails, 755 // but the stream will get set-up nevertheless 756 return status; 757 } 758 outgoing_active = true; 759 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 760 btstack_assert(connection != NULL); 761 762 // setup state 763 connection->a2dp_source_state = A2DP_W4_CONNECTED; 764 a2dp_source_cid = outgoing_cid; 765 *avdtp_cid = outgoing_cid; 766 767 } else { 768 // check state 769 switch (connection->a2dp_source_state){ 770 case A2DP_IDLE: 771 case A2DP_CONNECTED: 772 // restart process e.g. if there no suitable stream endpoints or they had been in use 773 outgoing_active = true; 774 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 775 *avdtp_cid = connection->avdtp_cid; 776 a2dp_start_discovering_seps(connection); 777 break; 778 default: 779 return ERROR_CODE_COMMAND_DISALLOWED; 780 } 781 } 782 return ERROR_CODE_SUCCESS; 783 } 784 785 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 786 return avdtp_disconnect(avdtp_cid); 787 } 788 789 790 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 791 return avdtp_start_stream(avdtp_cid, local_seid); 792 } 793 794 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 795 return avdtp_suspend_stream(avdtp_cid, local_seid); 796 } 797 798 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 799 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 800 } 801 802 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 803 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 804 } 805 806 int a2dp_source_stream_send_media_payload(uint16_t avdtp_cid, uint8_t local_seid, uint8_t * storage, int num_bytes_to_copy, uint8_t num_frames, uint8_t marker){ 807 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 808 } 809 810 uint8_t a2dp_source_stream_send_media_payload_rtp(uint16_t a2dp_cid, uint8_t local_seid, uint8_t marker, uint8_t * payload, uint16_t payload_size){ 811 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 812 } 813 814 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 815 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 816 } 817 818 static uint8_t a2dp_source_config_init(uint8_t local_seid, uint8_t remote_seid, avdtp_media_codec_type_t codec_type) { 819 820 // lookup local stream endpoint 821 avdtp_stream_endpoint_t * local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 822 if (local_stream_endpoint == NULL){ 823 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 824 } 825 826 // lookup remote stream endpoint 827 avdtp_sep_t * remote_sep = NULL; 828 uint8_t i; 829 for (i=0;i<num_remote_seps;i++){ 830 if (remote_seps[i].seid == remote_seid){ 831 remote_sep = &remote_seps[i]; 832 } 833 } 834 if (remote_sep == NULL){ 835 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 836 } 837 838 // set media configuration 839 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 840 local_stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 841 local_stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 842 // remote seid to use 843 local_stream_endpoint->set_config_remote_seid = remote_seid; 844 // enable delay reporting if supported 845 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 846 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 847 } 848 849 // suitable Sink stream endpoint found, configure it 850 sc.local_stream_endpoint = local_stream_endpoint; 851 a2dp_source_have_config = true; 852 853 return ERROR_CODE_SUCCESS; 854 } 855 856 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){ 857 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 858 if (connection == NULL){ 859 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 860 } 861 862 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_SBC); 863 if (status != 0) { 864 return status; 865 } 866 // set config in reserved buffer 867 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 868 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 869 avdtp_config_sbc_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 870 871 return ERROR_CODE_SUCCESS; 872 } 873 874 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){ 875 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 876 if (connection == NULL){ 877 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 878 } 879 880 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 881 if (status != 0) { 882 return status; 883 } 884 885 // set config in reserved buffer 886 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 887 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 888 avdtp_config_mpeg_audio_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 889 890 return ERROR_CODE_SUCCESS; 891 } 892 893 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){ 894 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 895 if (connection == NULL){ 896 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 897 } 898 899 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 900 if (status != 0) { 901 return status; 902 } 903 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 904 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 905 avdtp_config_mpeg_aac_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 906 907 return ERROR_CODE_SUCCESS; 908 } 909 910 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){ 911 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 912 if (connection == NULL){ 913 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 914 } 915 916 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 917 if (status != 0) { 918 return status; 919 } 920 921 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 = 7; 923 avdtp_config_atrac_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_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 929 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 930 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 931 if (connection == NULL){ 932 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 933 } 934 935 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 936 if (status != 0) { 937 return status; 938 } 939 940 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 941 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 942 943 return status; 944 } 945 946 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 947 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 948 if (connection == NULL){ 949 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 950 } 951 952 if (connection->a2dp_source_state != A2DP_STREAMING_OPENED) { 953 return ERROR_CODE_COMMAND_DISALLOWED; 954 } 955 956 btstack_assert(sc.local_stream_endpoint != NULL); 957 958 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 959 960 avdtp_media_codec_type_t codec_type = sc.local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 961 uint8_t codec_info_len; 962 switch (codec_type){ 963 case AVDTP_CODEC_SBC: 964 codec_info_len = 4; 965 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 966 avdtp_config_sbc_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 967 break; 968 case AVDTP_CODEC_MPEG_1_2_AUDIO: 969 codec_info_len = 4; 970 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 971 avdtp_config_mpeg_audio_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 972 break; 973 case AVDTP_CODEC_MPEG_2_4_AAC: 974 codec_info_len = 6; 975 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 976 avdtp_config_mpeg_aac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 977 break; 978 case AVDTP_CODEC_ATRAC_FAMILY: 979 codec_info_len = 7; 980 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 981 avdtp_config_atrac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 982 break; 983 default: 984 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 985 } 986 987 avdtp_capabilities_t new_configuration; 988 new_configuration.media_codec.media_type = AVDTP_AUDIO; 989 new_configuration.media_codec.media_codec_type = codec_type; 990 new_configuration.media_codec.media_codec_information_len = codec_info_len; 991 new_configuration.media_codec.media_codec_information = sc.local_stream_endpoint->media_codec_info; 992 993 // start reconfigure 994 connection->a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 995 996 return avdtp_source_reconfigure( 997 avdtp_cid, 998 avdtp_stream_endpoint_seid(sc.local_stream_endpoint), 999 sc.local_stream_endpoint->remote_sep.seid, 1000 1 << AVDTP_MEDIA_CODEC, 1001 new_configuration 1002 ); 1003 } 1004