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 static btstack_packet_handler_t a2dp_source_packet_handler_user; 80 81 static uint16_t a2dp_source_cid; 82 83 // discover remote seps 84 static uint16_t num_remote_seps; 85 static avdtp_sep_t remote_seps[AVDTP_MAX_SEP_NUM]; 86 87 static avdtp_stream_endpoint_context_t sc; 88 89 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 90 static void a2dp_discover_seps_with_next_waiting_connection(void); 91 92 static void a2dp_source_streaming_emit_connection_failed(avdtp_connection_t *connection, uint8_t status) { 93 uint8_t event[14]; 94 int pos = 0; 95 event[pos++] = HCI_EVENT_A2DP_META; 96 event[pos++] = sizeof(event) - 2; 97 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 98 little_endian_store_16(event, pos, connection->avdtp_cid); 99 pos += 2; 100 reverse_bd_addr(connection->remote_addr, &event[pos]); 101 pos += 6; 102 event[pos++] = 0; 103 event[pos++] = 0; 104 event[pos++] = status; 105 106 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 107 } 108 109 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){ 110 uint8_t* attribute; 111 de_create_sequence(service); 112 113 // 0x0000 "Service Record Handle" 114 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 115 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 116 117 // 0x0001 "Service Class ID List" 118 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 119 attribute = de_push_sequence(service); 120 { 121 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); 122 } 123 de_pop_sequence(service, attribute); 124 125 // 0x0004 "Protocol Descriptor List" 126 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 127 attribute = de_push_sequence(service); 128 { 129 uint8_t* l2cpProtocol = de_push_sequence(attribute); 130 { 131 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 132 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 133 } 134 de_pop_sequence(attribute, l2cpProtocol); 135 136 uint8_t* avProtocol = de_push_sequence(attribute); 137 { 138 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 139 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 140 } 141 de_pop_sequence(attribute, avProtocol); 142 } 143 de_pop_sequence(service, attribute); 144 145 // 0x0005 "Public Browse Group" 146 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 147 attribute = de_push_sequence(service); 148 { 149 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 150 } 151 de_pop_sequence(service, attribute); 152 153 // 0x0009 "Bluetooth Profile Descriptor List" 154 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 155 attribute = de_push_sequence(service); 156 { 157 uint8_t *a2dProfile = de_push_sequence(attribute); 158 { 159 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 160 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 161 } 162 de_pop_sequence(attribute, a2dProfile); 163 } 164 de_pop_sequence(service, attribute); 165 166 167 // 0x0100 "Service Name" 168 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 169 if (service_name){ 170 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 171 } else { 172 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_name), (uint8_t *) default_a2dp_source_service_name); 173 } 174 175 // 0x0100 "Provider Name" 176 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 177 if (service_provider_name){ 178 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 179 } else { 180 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_provider_name), (uint8_t *) default_a2dp_source_service_provider_name); 181 } 182 183 // 0x0311 "Supported Features" 184 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 185 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 186 } 187 188 static void a2dp_signaling_emit_reconfigured(uint16_t cid, uint8_t local_seid, uint8_t status){ 189 uint8_t event[7]; 190 int pos = 0; 191 event[pos++] = HCI_EVENT_A2DP_META; 192 event[pos++] = sizeof(event) - 2; 193 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 194 little_endian_store_16(event, pos, cid); 195 pos += 2; 196 event[pos++] = local_seid; 197 event[pos++] = status; 198 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 199 } 200 201 static void a2dp_source_discover_stream_endpoints(uint16_t avdtp_cid){ 202 a2dp_source_cid = avdtp_cid; 203 avdtp_source_discover_stream_endpoints(avdtp_cid); 204 } 205 206 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 207 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 208 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 209 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 210 211 212 if (connection == NULL) { 213 log_info("a2dp_discover_seps_with_next_waiting_connection"); 214 a2dp_discover_seps_with_next_waiting_connection(); 215 return; 216 } 217 218 if (connection->a2dp_source_stream_endpoint_configured) return; 219 a2dp_source_discover_stream_endpoints(avdtp_cid); 220 } 221 222 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 223 log_info("a2dp_source_set_config_timer_start cid 0%02x", avdtp_cid); 224 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 225 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 226 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 227 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 228 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 229 } 230 231 static void a2dp_source_set_config_timer_stop(void){ 232 log_info("a2dp_source_set_config_timer_stop"); 233 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 234 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 235 } 236 237 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 238 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 239 sc.active_remote_sep_index = 0; 240 num_remote_seps = 0; 241 memset(remote_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 242 connection->a2dp_source_discover_seps = false; 243 244 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 245 if (connection->a2dp_source_outgoing_active && (a2dp_source_cid == connection->avdtp_cid)){ 246 log_info("discover seps"); 247 a2dp_source_discover_stream_endpoints(connection->avdtp_cid); 248 } else { 249 log_info("wait a bit, then discover seps"); 250 a2dp_source_set_config_timer_start(connection->avdtp_cid); 251 } 252 } 253 254 static void a2dp_discover_seps_with_next_waiting_connection(void){ 255 btstack_linked_list_iterator_t it; 256 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 257 while (btstack_linked_list_iterator_has_next(&it)){ 258 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 259 if (!next_connection->a2dp_source_discover_seps) continue; 260 a2dp_start_discovering_seps(next_connection); 261 } 262 } 263 264 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 265 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 266 avdtp_connection_t * avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); 267 btstack_assert(avdtp_connection != NULL); 268 if ((a2dp_source_cid == cid) && (avdtp_connection->a2dp_source_state == A2DP_W4_SET_CONFIGURATION)){ 269 // outgoing: discovery and config of remote sink sep successful, trigger stream open 270 avdtp_connection->a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 271 } else { 272 // incoming: accept cid, lookup local stream endpoint and wait for stream open 273 a2dp_source_cid = cid; 274 sc.local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 275 btstack_assert(sc.local_stream_endpoint != NULL); 276 avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 277 } 278 279 // config set: stop timer 280 a2dp_source_set_config_timer_stop(); 281 avdtp_connection->a2dp_source_stream_endpoint_configured = true; 282 } 283 284 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 285 UNUSED(channel); 286 UNUSED(size); 287 288 uint16_t cid; 289 avdtp_connection_t * connection; 290 291 uint8_t signal_identifier; 292 uint8_t status; 293 uint8_t local_seid; 294 uint8_t remote_seid; 295 296 if (packet_type != HCI_EVENT_PACKET) return; 297 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 298 299 switch (packet[2]){ 300 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 301 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 302 connection = avdtp_get_connection_for_avdtp_cid(cid); 303 btstack_assert(connection != NULL); 304 305 status = avdtp_subevent_signaling_connection_established_get_status(packet); 306 if (status != ERROR_CODE_SUCCESS){ 307 // notify about connection error only if we're initiator 308 if (connection->a2dp_source_outgoing_active && (a2dp_source_cid == cid)){ 309 log_info("A2DP source signaling connection failed status 0x%02x", status); 310 connection->a2dp_source_outgoing_active = false; 311 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 312 } 313 break; 314 } 315 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 316 317 // notify app 318 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 319 320 // we already have a valid setup 321 if (connection->a2dp_source_stream_endpoint_configured) return; 322 323 // start discover seps now if: 324 // - outgoing active: signaling for outgoing connection 325 // - outgoing not active: incoming connection and no sep discover ongoing 326 327 log_info("outgoing_active %d, current avdtp cid 0x%02x, a2dp_source_state %d", connection->a2dp_source_outgoing_active, cid, connection->a2dp_source_state); 328 if ((connection->a2dp_source_outgoing_active && (a2dp_source_cid == cid)) || (!connection->a2dp_source_outgoing_active && (connection->a2dp_source_state == A2DP_IDLE))){ 329 a2dp_start_discovering_seps(connection); 330 } else { 331 // post-pone sep discovery 332 connection->a2dp_source_discover_seps = true; 333 } 334 break; 335 336 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 337 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 338 connection = avdtp_get_connection_for_avdtp_cid(cid); 339 btstack_assert(connection != NULL); 340 341 if (connection->a2dp_source_state == A2DP_DISCOVER_SEPS) { 342 avdtp_sep_t sep; 343 memset(&sep, 0, sizeof(avdtp_sep_t)); 344 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 345 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 346 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 347 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 348 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 349 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 350 num_remote_seps); 351 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 352 remote_seps[num_remote_seps++] = sep; 353 } 354 } 355 break; 356 357 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 358 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 359 connection = avdtp_get_connection_for_avdtp_cid(cid); 360 btstack_assert(connection != NULL); 361 362 if (connection->a2dp_source_state != A2DP_DISCOVER_SEPS) break; 363 364 if (num_remote_seps > 0){ 365 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 366 sc.active_remote_sep_index = 0; 367 connection->a2dp_source_have_config = false; 368 } else { 369 if (connection->a2dp_source_outgoing_active){ 370 connection->a2dp_source_outgoing_active = false; 371 connection = avdtp_get_connection_for_avdtp_cid(cid); 372 btstack_assert(connection != NULL); 373 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 374 } 375 376 // continue 377 connection->a2dp_source_state = A2DP_CONNECTED; 378 a2dp_discover_seps_with_next_waiting_connection(); 379 } 380 break; 381 382 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 383 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 384 connection = avdtp_get_connection_for_avdtp_cid(cid); 385 btstack_assert(connection != NULL); 386 387 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 388 389 // forward codec capability 390 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 391 392 // select SEP if none configured yet 393 if (connection->a2dp_source_have_config == false){ 394 // find SBC stream endpoint 395 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 396 if (stream_endpoint != NULL){ 397 // choose SBC config params 398 avdtp_configuration_sbc_t configuration; 399 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 400 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 401 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 402 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 403 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 404 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 405 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 406 407 // and pre-select this endpoint 408 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 409 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 410 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 411 } 412 } 413 break; 414 415 // forward codec capability 416 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 417 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 418 connection = avdtp_get_connection_for_avdtp_cid(cid); 419 btstack_assert(connection != NULL); 420 421 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 422 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 423 break; 424 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 425 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 426 connection = avdtp_get_connection_for_avdtp_cid(cid); 427 btstack_assert(connection != NULL); 428 429 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 430 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 431 break; 432 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 433 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 434 connection = avdtp_get_connection_for_avdtp_cid(cid); 435 btstack_assert(connection != NULL); 436 437 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 438 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 439 break; 440 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 441 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 442 connection = avdtp_get_connection_for_avdtp_cid(cid); 443 btstack_assert(connection != NULL); 444 445 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 446 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 447 break; 448 449 // not forwarded 450 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 451 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 452 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 453 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 454 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 455 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 456 break; 457 458 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 459 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 460 connection = avdtp_get_connection_for_avdtp_cid(cid); 461 btstack_assert(connection != NULL); 462 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_state); 463 464 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 465 466 // store delay reporting capability 467 remote_seps[sc.active_remote_sep_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 468 469 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 470 break; 471 472 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 473 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 474 connection = avdtp_get_connection_for_avdtp_cid(cid); 475 btstack_assert(connection != NULL); 476 477 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 478 479 // forward capabilities done for endpoint 480 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 481 482 // endpoint was not suitable, check next one 483 sc.active_remote_sep_index++; 484 if (sc.active_remote_sep_index >= num_remote_seps){ 485 486 // emit 'all capabilities for all seps reported' 487 uint8_t event[6]; 488 uint8_t pos = 0; 489 event[pos++] = HCI_EVENT_A2DP_META; 490 event[pos++] = sizeof(event) - 2; 491 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 492 little_endian_store_16(event, pos, cid); 493 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 494 495 // do we have a valid config? 496 if (connection->a2dp_source_have_config){ 497 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 498 connection->a2dp_source_have_config = false; 499 break; 500 } 501 502 // we didn't find a suitable SBC stream endpoint, sorry. 503 if (connection->a2dp_source_outgoing_active){ 504 connection->a2dp_source_outgoing_active = false; 505 connection = avdtp_get_connection_for_avdtp_cid(cid); 506 btstack_assert(connection != NULL); 507 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 508 } 509 connection->a2dp_source_state = A2DP_CONNECTED; 510 a2dp_discover_seps_with_next_waiting_connection(); 511 } 512 break; 513 514 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 515 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 516 connection = avdtp_get_connection_for_avdtp_cid(cid); 517 btstack_assert(connection != NULL); 518 519 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 520 break; 521 522 // forward codec configuration 523 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 524 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 525 a2dp_handle_received_configuration(packet, local_seid); 526 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 527 break; 528 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 529 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_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_MPEG_AUDIO_CONFIGURATION); 532 break; 533 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 534 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_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_AAC_CONFIGURATION); 537 break; 538 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 539 local_seid = avdtp_subevent_signaling_media_codec_atrac_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_ATRAC_CONFIGURATION); 542 break; 543 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 544 local_seid = avdtp_subevent_signaling_media_codec_sbc_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_OTHER_CONFIGURATION); 547 break; 548 549 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 550 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 551 break; 552 553 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 554 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 555 connection = avdtp_get_connection_for_avdtp_cid(cid); 556 btstack_assert(connection != NULL); 557 558 if (connection->a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 559 560 connection->a2dp_source_outgoing_active = false; 561 status = avdtp_subevent_streaming_connection_established_get_status(packet); 562 if (status != ERROR_CODE_SUCCESS){ 563 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 564 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 565 break; 566 } 567 568 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 569 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 570 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 571 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 572 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 573 break; 574 575 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 576 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 577 connection = avdtp_get_connection_for_avdtp_cid(cid); 578 btstack_assert(connection != NULL); 579 580 // reset discovery timer while remote is active 581 if (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) { 582 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(&a2dp_source_set_config_timer); 583 if ((avdtp_cid == 0) || (avdtp_cid != cid)) break; 584 log_info("Reset discovery timer"); 585 a2dp_source_set_config_timer_start(avdtp_cid); 586 break; 587 } 588 589 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 590 591 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_state, cid); 592 593 switch (connection->a2dp_source_state){ 594 case A2DP_GET_CAPABILITIES: 595 remote_seid = remote_seps[sc.active_remote_sep_index].seid; 596 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 597 avdtp_source_get_all_capabilities(cid, remote_seid); 598 return; 599 600 case A2DP_SET_CONFIGURATION: 601 remote_seid = sc.local_stream_endpoint->set_config_remote_seid; 602 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); 603 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 604 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); 605 return; 606 607 case A2DP_W2_OPEN_STREAM_WITH_SEID: 608 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); 609 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 610 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.local_stream_endpoint->remote_sep.seid); 611 break; 612 613 case A2DP_W2_RECONFIGURE_WITH_SEID: 614 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); 615 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), ERROR_CODE_SUCCESS); 616 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 617 break; 618 619 case A2DP_STREAMING_OPENED: 620 switch (signal_identifier){ 621 case AVDTP_SI_START: 622 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 623 break; 624 case AVDTP_SI_SUSPEND: 625 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 626 break; 627 case AVDTP_SI_ABORT: 628 case AVDTP_SI_CLOSE: 629 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 630 break; 631 default: 632 break; 633 } 634 break; 635 636 default: 637 break; 638 } 639 break; 640 641 case AVDTP_SUBEVENT_SIGNALING_REJECT: 642 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 643 connection = avdtp_get_connection_for_avdtp_cid(cid); 644 btstack_assert(connection != NULL); 645 646 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 647 648 connection->a2dp_source_state = A2DP_CONNECTED; 649 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 650 break; 651 652 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 653 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 654 connection = avdtp_get_connection_for_avdtp_cid(cid); 655 btstack_assert(connection != NULL); 656 657 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 658 659 connection->a2dp_source_state = A2DP_CONNECTED; 660 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 661 break; 662 663 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 664 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 665 connection = avdtp_get_connection_for_avdtp_cid(cid); 666 btstack_assert(connection != NULL); 667 668 connection->a2dp_source_state = A2DP_CONFIGURED; 669 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 670 break; 671 672 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 673 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 674 connection = avdtp_get_connection_for_avdtp_cid(cid); 675 btstack_assert(connection != NULL); 676 677 // connect/release are passed on to app 678 if (a2dp_source_cid == cid){ 679 connection->a2dp_source_stream_endpoint_configured = false; 680 sc.local_stream_endpoint = NULL; 681 682 connection->a2dp_source_state = A2DP_IDLE; 683 a2dp_source_cid = 0; 684 } 685 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 686 break; 687 688 default: 689 break; 690 } 691 } 692 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 693 btstack_assert(callback != NULL); 694 695 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 696 a2dp_source_packet_handler_user = callback; 697 } 698 699 void a2dp_source_init(void){ 700 (void) memset(&sc, 0, sizeof(avdtp_stream_endpoint_context_t)); 701 702 avdtp_source_init(); 703 } 704 705 void a2dp_source_deinit(void){ 706 avdtp_source_deinit(); 707 708 a2dp_source_cid = 0; 709 num_remote_seps = 0; 710 } 711 712 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 713 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 714 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 715 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 716 if (!stream_endpoint){ 717 return NULL; 718 } 719 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 720 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 721 codec_capabilities, codec_capabilities_len); 722 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 723 724 // store user codec configuration buffer 725 stream_endpoint->media_codec_type = media_codec_type; 726 stream_endpoint->media_codec_configuration_info = codec_configuration; 727 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 728 729 return stream_endpoint; 730 } 731 732 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 733 avdtp_source_finalize_stream_endpoint(stream_endpoint); 734 } 735 736 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 737 738 uint16_t outgoing_cid; 739 740 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 741 if (connection == NULL){ 742 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 743 if (status != ERROR_CODE_SUCCESS) { 744 // if there's already a connection for for remote addr, avdtp_source_connect fails, 745 // but the stream will get set-up nevertheless 746 return status; 747 } 748 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 749 btstack_assert(connection != NULL); 750 751 // setup state 752 connection->a2dp_source_outgoing_active = true; 753 connection->a2dp_source_state = A2DP_W4_CONNECTED; 754 a2dp_source_cid = outgoing_cid; 755 *avdtp_cid = outgoing_cid; 756 757 } else { 758 if (connection->a2dp_source_outgoing_active || connection->a2dp_source_stream_endpoint_configured) { 759 return ERROR_CODE_COMMAND_DISALLOWED; 760 } 761 762 // check state 763 switch (connection->a2dp_source_state){ 764 case A2DP_IDLE: 765 case A2DP_CONNECTED: 766 // restart process e.g. if there no suitable stream endpoints or they had been in use 767 connection->a2dp_source_outgoing_active = true; 768 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 769 *avdtp_cid = connection->avdtp_cid; 770 a2dp_start_discovering_seps(connection); 771 break; 772 default: 773 return ERROR_CODE_COMMAND_DISALLOWED; 774 } 775 } 776 return ERROR_CODE_SUCCESS; 777 } 778 779 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 780 return avdtp_disconnect(avdtp_cid); 781 } 782 783 784 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 785 return avdtp_start_stream(avdtp_cid, local_seid); 786 } 787 788 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 789 return avdtp_suspend_stream(avdtp_cid, local_seid); 790 } 791 792 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 793 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 794 } 795 796 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 797 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 798 } 799 800 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){ 801 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 802 } 803 804 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){ 805 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 806 } 807 808 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 809 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 810 } 811 812 static uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 813 avdtp_media_codec_type_t codec_type) { 814 815 // lookup local stream endpoint 816 avdtp_stream_endpoint_t * local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 817 if (local_stream_endpoint == NULL){ 818 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 819 } 820 821 // lookup remote stream endpoint 822 avdtp_sep_t * remote_sep = NULL; 823 uint8_t i; 824 for (i=0;i<num_remote_seps;i++){ 825 if (remote_seps[i].seid == remote_seid){ 826 remote_sep = &remote_seps[i]; 827 } 828 } 829 if (remote_sep == NULL){ 830 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 831 } 832 833 // set media configuration 834 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 835 local_stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 836 local_stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 837 // remote seid to use 838 local_stream_endpoint->set_config_remote_seid = remote_seid; 839 // enable delay reporting if supported 840 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 841 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 842 } 843 844 // suitable Sink stream endpoint found, configure it 845 sc.local_stream_endpoint = local_stream_endpoint; 846 connection->a2dp_source_have_config = true; 847 848 return ERROR_CODE_SUCCESS; 849 } 850 851 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){ 852 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 853 if (connection == NULL){ 854 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 855 } 856 857 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 858 if (status != 0) { 859 return status; 860 } 861 // set config in reserved buffer 862 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 863 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 864 avdtp_config_sbc_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 865 866 return ERROR_CODE_SUCCESS; 867 } 868 869 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){ 870 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 871 if (connection == NULL){ 872 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 873 } 874 875 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 876 if (status != 0) { 877 return status; 878 } 879 880 // set config in reserved buffer 881 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 882 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 883 avdtp_config_mpeg_audio_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 884 885 return ERROR_CODE_SUCCESS; 886 } 887 888 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){ 889 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 890 if (connection == NULL){ 891 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 892 } 893 894 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 895 if (status != 0) { 896 return status; 897 } 898 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 899 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 900 avdtp_config_mpeg_aac_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 901 902 return ERROR_CODE_SUCCESS; 903 } 904 905 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){ 906 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 907 if (connection == NULL){ 908 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 909 } 910 911 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 912 if (status != 0) { 913 return status; 914 } 915 916 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 917 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 918 avdtp_config_atrac_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 919 920 return ERROR_CODE_SUCCESS; 921 } 922 923 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 924 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 925 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 926 if (connection == NULL){ 927 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 928 } 929 930 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 931 if (status != 0) { 932 return status; 933 } 934 935 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 936 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 937 938 return status; 939 } 940 941 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 942 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 943 if (connection == NULL){ 944 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 945 } 946 947 if (connection->a2dp_source_state != A2DP_STREAMING_OPENED) { 948 return ERROR_CODE_COMMAND_DISALLOWED; 949 } 950 951 btstack_assert(sc.local_stream_endpoint != NULL); 952 953 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 954 955 avdtp_media_codec_type_t codec_type = sc.local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 956 uint8_t codec_info_len; 957 switch (codec_type){ 958 case AVDTP_CODEC_SBC: 959 codec_info_len = 4; 960 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 961 avdtp_config_sbc_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 962 break; 963 case AVDTP_CODEC_MPEG_1_2_AUDIO: 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_mpeg_audio_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 967 break; 968 case AVDTP_CODEC_MPEG_2_4_AAC: 969 codec_info_len = 6; 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_aac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 972 break; 973 case AVDTP_CODEC_ATRAC_FAMILY: 974 codec_info_len = 7; 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_atrac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 977 break; 978 default: 979 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 980 } 981 982 avdtp_capabilities_t new_configuration; 983 new_configuration.media_codec.media_type = AVDTP_AUDIO; 984 new_configuration.media_codec.media_codec_type = codec_type; 985 new_configuration.media_codec.media_codec_information_len = codec_info_len; 986 new_configuration.media_codec.media_codec_information = sc.local_stream_endpoint->media_codec_info; 987 988 // start reconfigure 989 connection->a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 990 991 return avdtp_source_reconfigure( 992 avdtp_cid, 993 avdtp_stream_endpoint_seid(sc.local_stream_endpoint), 994 sc.local_stream_endpoint->remote_sep.seid, 995 1 << AVDTP_MEDIA_CODEC, 996 new_configuration 997 ); 998 } 999