1 2 /* 3 * Copyright (C) 2016 BlueKitchen GmbH 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the copyright holders nor the names of 15 * contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 4. Any redistribution, use, or modification is done solely for 18 * personal benefit and not for any commercial purpose or for 19 * monetary gain. 20 * 21 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 25 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 28 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 31 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * Please inquire about commercial licensing options at 35 * [email protected] 36 * 37 */ 38 39 /** 40 * Supported use cases: 41 * - single incoming connection: sep discovery starts and stream will get setup if remote sink sep with SBC is found 42 * - single outgoing connection: see above 43 * - outgoing and incoming connection to same device: 44 * - if outgoing is triggered first, incoming will get ignored. 45 * - if incoming starts first, start ougoing will fail, but incoming will succeed. 46 * - outgoing and incoming connections to different devices: 47 * - if outgoing is first, incoming gets ignored. 48 * - if incoming starts first SEP discovery will get stopped and outgoing will succeed. 49 */ 50 51 #define BTSTACK_FILE__ "a2dp_source.c" 52 53 #include <stdint.h> 54 #include <string.h> 55 56 #include "bluetooth_psm.h" 57 #include "bluetooth_sdp.h" 58 #include "btstack_debug.h" 59 #include "btstack_event.h" 60 #include "classic/a2dp_source.h" 61 #include "classic/avdtp_source.h" 62 #include "classic/avdtp_util.h" 63 #include "classic/sdp_util.h" 64 #include "l2cap.h" 65 66 #define AVDTP_MAX_SEP_NUM 10 67 #define A2DP_SET_CONFIG_DELAY_MS 150 68 69 typedef struct { 70 avdtp_stream_endpoint_t * local_stream_endpoint; 71 uint8_t active_remote_sep_index; 72 } avdtp_stream_endpoint_context_t; 73 74 75 static const char * default_a2dp_source_service_name = "BTstack A2DP Source Service"; 76 static const char * default_a2dp_source_service_provider_name = "BTstack A2DP Source Service Provider"; 77 78 static btstack_timer_source_t a2dp_source_set_config_timer; 79 80 static bool outgoing_active; 81 82 // discover remote seps 83 static a2dp_state_t a2dp_source_state; 84 static uint16_t a2dp_source_cid; 85 static uint16_t num_remote_seps; 86 static avdtp_sep_t remote_seps[AVDTP_MAX_SEP_NUM]; 87 88 static bool a2dp_source_have_config; 89 90 static bool stream_endpoint_configured; 91 92 static avdtp_stream_endpoint_context_t sc; 93 static btstack_packet_handler_t a2dp_source_packet_handler_user; 94 95 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 96 static void a2dp_discover_seps_with_next_waiting_connection(void); 97 98 static void a2dp_source_streaming_emit_connection_failed(avdtp_connection_t *connection, uint8_t status) { 99 uint8_t event[14]; 100 int pos = 0; 101 event[pos++] = HCI_EVENT_A2DP_META; 102 event[pos++] = sizeof(event) - 2; 103 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 104 little_endian_store_16(event, pos, connection->avdtp_cid); 105 pos += 2; 106 reverse_bd_addr(connection->remote_addr, &event[pos]); 107 pos += 6; 108 event[pos++] = 0; 109 event[pos++] = 0; 110 event[pos++] = status; 111 112 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 113 } 114 115 void a2dp_source_create_sdp_record(uint8_t * service, uint32_t service_record_handle, uint16_t supported_features, const char * service_name, const char * service_provider_name){ 116 uint8_t* attribute; 117 de_create_sequence(service); 118 119 // 0x0000 "Service Record Handle" 120 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 121 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 122 123 // 0x0001 "Service Class ID List" 124 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 125 attribute = de_push_sequence(service); 126 { 127 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); 128 } 129 de_pop_sequence(service, attribute); 130 131 // 0x0004 "Protocol Descriptor List" 132 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 133 attribute = de_push_sequence(service); 134 { 135 uint8_t* l2cpProtocol = de_push_sequence(attribute); 136 { 137 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 138 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 139 } 140 de_pop_sequence(attribute, l2cpProtocol); 141 142 uint8_t* avProtocol = de_push_sequence(attribute); 143 { 144 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 145 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 146 } 147 de_pop_sequence(attribute, avProtocol); 148 } 149 de_pop_sequence(service, attribute); 150 151 // 0x0005 "Public Browse Group" 152 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 153 attribute = de_push_sequence(service); 154 { 155 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 156 } 157 de_pop_sequence(service, attribute); 158 159 // 0x0009 "Bluetooth Profile Descriptor List" 160 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 161 attribute = de_push_sequence(service); 162 { 163 uint8_t *a2dProfile = de_push_sequence(attribute); 164 { 165 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 166 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 167 } 168 de_pop_sequence(attribute, a2dProfile); 169 } 170 de_pop_sequence(service, attribute); 171 172 173 // 0x0100 "Service Name" 174 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 175 if (service_name){ 176 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 177 } else { 178 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_name), (uint8_t *) default_a2dp_source_service_name); 179 } 180 181 // 0x0100 "Provider Name" 182 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 183 if (service_provider_name){ 184 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 185 } else { 186 de_add_data(service, DE_STRING, strlen(default_a2dp_source_service_provider_name), (uint8_t *) default_a2dp_source_service_provider_name); 187 } 188 189 // 0x0311 "Supported Features" 190 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 191 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 192 } 193 194 static void a2dp_signaling_emit_reconfigured(uint16_t cid, uint8_t local_seid, uint8_t status){ 195 uint8_t event[7]; 196 int pos = 0; 197 event[pos++] = HCI_EVENT_A2DP_META; 198 event[pos++] = sizeof(event) - 2; 199 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 200 little_endian_store_16(event, pos, cid); 201 pos += 2; 202 event[pos++] = local_seid; 203 event[pos++] = status; 204 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 205 } 206 207 static void a2dp_source_discover_stream_endpoints(uint16_t avdtp_cid){ 208 a2dp_source_cid = avdtp_cid; 209 avdtp_source_discover_stream_endpoints(avdtp_cid); 210 } 211 212 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 213 if (stream_endpoint_configured) return; 214 215 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 216 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 217 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 218 219 if (connection == NULL) { 220 log_info("a2dp_discover_seps_with_next_waiting_connection"); 221 a2dp_discover_seps_with_next_waiting_connection(); 222 return; 223 } 224 225 a2dp_source_discover_stream_endpoints(avdtp_cid); 226 } 227 228 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 229 log_info("a2dp_source_set_config_timer_start cid 0%02x", avdtp_cid); 230 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 231 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 232 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 233 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 234 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 235 } 236 237 static void a2dp_source_set_config_timer_stop(void){ 238 log_info("a2dp_source_set_config_timer_stop"); 239 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 240 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 241 } 242 243 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 244 a2dp_source_state = A2DP_DISCOVER_SEPS; 245 sc.active_remote_sep_index = 0; 246 num_remote_seps = 0; 247 memset(remote_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 248 connection->a2dp_source_discover_seps = false; 249 250 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 251 if (outgoing_active && (a2dp_source_cid == connection->avdtp_cid)){ 252 log_info("discover seps"); 253 a2dp_source_discover_stream_endpoints(connection->avdtp_cid); 254 } else { 255 log_info("wait a bit, then discover seps"); 256 a2dp_source_set_config_timer_start(connection->avdtp_cid); 257 } 258 } 259 260 static void a2dp_discover_seps_with_next_waiting_connection(void){ 261 a2dp_source_state = A2DP_IDLE; 262 263 btstack_linked_list_iterator_t it; 264 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 265 while (btstack_linked_list_iterator_has_next(&it)){ 266 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 267 if (!next_connection->a2dp_source_discover_seps) continue; 268 a2dp_start_discovering_seps(next_connection); 269 } 270 } 271 272 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 273 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 274 if ((a2dp_source_cid == cid) && (a2dp_source_state == A2DP_W4_SET_CONFIGURATION)){ 275 // outgoing: discovery and config of remote sink sep successful, trigger stream open 276 a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 277 } else { 278 // incoming: accept cid, lookup local stream endpoint and wait for stream open 279 a2dp_source_cid = cid; 280 sc.local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 281 btstack_assert(sc.local_stream_endpoint != NULL); 282 a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 283 } 284 285 // config set: stop timer 286 a2dp_source_set_config_timer_stop(); 287 stream_endpoint_configured = true; 288 } 289 290 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 291 UNUSED(channel); 292 UNUSED(size); 293 294 uint16_t cid; 295 avdtp_connection_t * connection; 296 297 uint8_t signal_identifier; 298 uint8_t status; 299 uint8_t local_seid; 300 uint8_t remote_seid; 301 302 if (packet_type != HCI_EVENT_PACKET) return; 303 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 304 305 switch (packet[2]){ 306 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 307 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 308 connection = avdtp_get_connection_for_avdtp_cid(cid); 309 btstack_assert(connection != NULL); 310 311 status = avdtp_subevent_signaling_connection_established_get_status(packet); 312 if (status != ERROR_CODE_SUCCESS){ 313 // notify about connection error only if we're initiator 314 if (outgoing_active && (a2dp_source_cid == cid)){ 315 log_info("A2DP source signaling connection failed status 0x%02x", status); 316 outgoing_active = false; 317 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 318 } 319 break; 320 } 321 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 322 323 // notify app 324 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 325 326 // we already have a valid setup 327 if (stream_endpoint_configured) return; 328 329 // start discover seps now if: 330 // - outgoing active: signaling for outgoing connection 331 // - outgoing not active: incoming connection and no sep discover ongoing 332 333 log_info("outgoing_active %d, current avdtp cid 0x%02x, a2dp_source_state %d", outgoing_active, cid, a2dp_source_state); 334 if ((outgoing_active && (a2dp_source_cid == cid)) || (!outgoing_active && (a2dp_source_state == A2DP_IDLE))){ 335 a2dp_start_discovering_seps(connection); 336 } else { 337 // post-pone sep discovery 338 connection->a2dp_source_discover_seps = true; 339 } 340 break; 341 342 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 343 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 344 if (a2dp_source_cid != cid) break; 345 if (a2dp_source_state == A2DP_DISCOVER_SEPS) { 346 avdtp_sep_t sep; 347 memset(&sep, 0, sizeof(avdtp_sep_t)); 348 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 349 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 350 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 351 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 352 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 353 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 354 num_remote_seps); 355 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 356 remote_seps[num_remote_seps++] = sep; 357 } 358 } 359 break; 360 361 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 362 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 363 if (a2dp_source_cid != cid) break; 364 if (a2dp_source_state != A2DP_DISCOVER_SEPS) break; 365 a2dp_source_state = A2DP_CONNECTED; 366 367 connection = avdtp_get_connection_for_avdtp_cid(cid); 368 btstack_assert(connection != NULL); 369 370 if (num_remote_seps > 0){ 371 a2dp_source_state = A2DP_GET_CAPABILITIES; 372 sc.active_remote_sep_index = 0; 373 a2dp_source_have_config = false; 374 } else { 375 if (outgoing_active){ 376 outgoing_active = false; 377 connection = avdtp_get_connection_for_avdtp_cid(cid); 378 btstack_assert(connection != NULL); 379 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 380 } 381 382 // continue 383 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 if (a2dp_source_cid != cid) break; 390 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 391 392 // forward codec capability 393 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 394 395 // select SEP if none configured yet 396 if (a2dp_source_have_config == false){ 397 // find SBC stream endpoint 398 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 399 if (stream_endpoint != NULL){ 400 // choose SBC config params 401 avdtp_configuration_sbc_t configuration; 402 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 403 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 404 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 405 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 406 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 407 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 408 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 409 410 // and pre-select this endpoint 411 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 412 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 413 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 414 } 415 } 416 break; 417 418 // forward codec capability 419 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 420 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 421 if (a2dp_source_cid != cid) break; 422 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 423 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 424 break; 425 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 426 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 427 if (a2dp_source_cid != cid) break; 428 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 429 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 430 break; 431 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 432 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 433 if (a2dp_source_cid != cid) break; 434 if (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_ATRAC_CAPABILITY); 436 break; 437 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 438 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 439 if (a2dp_source_cid != cid) break; 440 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 441 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 442 break; 443 444 // not forwarded 445 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 446 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 447 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 448 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 449 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 450 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 451 break; 452 453 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 454 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 455 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, a2dp_source_state); 456 457 if (a2dp_source_cid != cid) break; 458 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 459 460 // store delay reporting capability 461 remote_seps[sc.active_remote_sep_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 462 463 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 464 break; 465 466 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 467 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 468 if (a2dp_source_cid != cid) break; 469 if (a2dp_source_state != A2DP_GET_CAPABILITIES) break; 470 471 // forward capabilities done for endpoint 472 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 473 474 // endpoint was not suitable, check next one 475 sc.active_remote_sep_index++; 476 if (sc.active_remote_sep_index >= num_remote_seps){ 477 478 // emit 'all capabilities for all seps reported' 479 uint8_t event[6]; 480 uint8_t pos = 0; 481 event[pos++] = HCI_EVENT_A2DP_META; 482 event[pos++] = sizeof(event) - 2; 483 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 484 little_endian_store_16(event, pos, cid); 485 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 486 487 // do we have a valid config? 488 if (a2dp_source_have_config){ 489 a2dp_source_state = A2DP_SET_CONFIGURATION; 490 a2dp_source_have_config = false; 491 break; 492 } 493 494 // we didn't find a suitable SBC stream endpoint, sorry. 495 if (outgoing_active){ 496 outgoing_active = false; 497 connection = avdtp_get_connection_for_avdtp_cid(cid); 498 btstack_assert(connection != NULL); 499 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 500 } 501 a2dp_discover_seps_with_next_waiting_connection(); 502 } 503 break; 504 505 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 506 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 507 if (a2dp_source_cid != cid) break; 508 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 509 break; 510 511 // forward codec configuration 512 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 513 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 514 a2dp_handle_received_configuration(packet, local_seid); 515 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 516 break; 517 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 518 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 519 a2dp_handle_received_configuration(packet, local_seid); 520 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 521 break; 522 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 523 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 524 a2dp_handle_received_configuration(packet, local_seid); 525 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 526 break; 527 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 528 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 529 a2dp_handle_received_configuration(packet, local_seid); 530 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 531 break; 532 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 533 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 534 a2dp_handle_received_configuration(packet, local_seid); 535 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 536 break; 537 538 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 539 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 540 break; 541 542 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 543 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 544 if (a2dp_source_cid != cid) break; 545 if (a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 546 547 outgoing_active = false; 548 status = avdtp_subevent_streaming_connection_established_get_status(packet); 549 if (status != ERROR_CODE_SUCCESS){ 550 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 551 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 552 break; 553 } 554 555 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 556 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 557 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 558 a2dp_source_state = A2DP_STREAMING_OPENED; 559 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 560 break; 561 562 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 563 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 564 565 // reset discovery timer while remote is active 566 if (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) { 567 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(&a2dp_source_set_config_timer); 568 if ((avdtp_cid == 0) || (avdtp_cid != cid)) break; 569 log_info("Reset discovery timer"); 570 a2dp_source_set_config_timer_start(avdtp_cid); 571 break; 572 } 573 574 if (a2dp_source_cid != cid) break; 575 576 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 577 578 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), a2dp_source_state, cid); 579 580 switch (a2dp_source_state){ 581 case A2DP_GET_CAPABILITIES: 582 remote_seid = remote_seps[sc.active_remote_sep_index].seid; 583 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 584 avdtp_source_get_all_capabilities(cid, remote_seid); 585 return; 586 587 case A2DP_SET_CONFIGURATION: 588 remote_seid = sc.local_stream_endpoint->set_config_remote_seid; 589 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); 590 a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 591 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); 592 return; 593 594 case A2DP_W2_OPEN_STREAM_WITH_SEID: 595 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); 596 a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 597 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), sc.local_stream_endpoint->remote_sep.seid); 598 break; 599 600 case A2DP_W2_RECONFIGURE_WITH_SEID: 601 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); 602 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), ERROR_CODE_SUCCESS); 603 a2dp_source_state = A2DP_STREAMING_OPENED; 604 break; 605 606 case A2DP_STREAMING_OPENED: 607 switch (signal_identifier){ 608 case AVDTP_SI_START: 609 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 610 break; 611 case AVDTP_SI_SUSPEND: 612 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 613 break; 614 case AVDTP_SI_ABORT: 615 case AVDTP_SI_CLOSE: 616 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(sc.local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 617 break; 618 default: 619 break; 620 } 621 break; 622 623 default: 624 break; 625 } 626 break; 627 628 case AVDTP_SUBEVENT_SIGNALING_REJECT: 629 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 630 if (a2dp_source_cid != cid) break; 631 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 632 633 a2dp_source_state = A2DP_CONNECTED; 634 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 635 break; 636 637 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 638 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 639 if (a2dp_source_cid != cid) break; 640 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 641 642 a2dp_source_state = A2DP_CONNECTED; 643 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 644 break; 645 646 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 647 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 648 if (a2dp_source_cid != cid) break; 649 650 a2dp_source_state = A2DP_CONFIGURED; 651 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 652 break; 653 654 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 655 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 656 // connect/release are passed on to app 657 if (a2dp_source_cid == cid){ 658 stream_endpoint_configured = false; 659 sc.local_stream_endpoint = NULL; 660 a2dp_source_state = A2DP_IDLE; 661 a2dp_source_cid = 0; 662 } 663 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 664 break; 665 666 default: 667 break; 668 } 669 } 670 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 671 btstack_assert(callback != NULL); 672 673 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 674 a2dp_source_packet_handler_user = callback; 675 } 676 677 void a2dp_source_init(void){ 678 a2dp_source_state = A2DP_IDLE; 679 (void) memset(&sc, 0, sizeof(avdtp_stream_endpoint_context_t)); 680 681 avdtp_source_init(); 682 } 683 684 void a2dp_source_deinit(void){ 685 avdtp_source_deinit(); 686 687 outgoing_active = false; 688 stream_endpoint_configured = false; 689 a2dp_source_cid = 0; 690 num_remote_seps = 0; 691 } 692 693 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 694 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 695 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 696 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 697 if (!stream_endpoint){ 698 return NULL; 699 } 700 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 701 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 702 codec_capabilities, codec_capabilities_len); 703 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 704 705 // store user codec configuration buffer 706 stream_endpoint->media_codec_type = media_codec_type; 707 stream_endpoint->media_codec_configuration_info = codec_configuration; 708 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 709 710 return stream_endpoint; 711 } 712 713 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 714 avdtp_source_finalize_stream_endpoint(stream_endpoint); 715 } 716 717 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 718 if (outgoing_active || stream_endpoint_configured) { 719 return ERROR_CODE_COMMAND_DISALLOWED; 720 } 721 722 uint16_t outgoing_cid; 723 724 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 725 if (connection == NULL){ 726 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 727 if (status != ERROR_CODE_SUCCESS) { 728 // if there's already a connection for for remote addr, avdtp_source_connect fails, 729 // but the stream will get set-up nevertheless 730 return status; 731 } 732 outgoing_active = true; 733 734 // stop sep discovery for other 735 if (a2dp_source_state != A2DP_IDLE){ 736 connection = avdtp_get_connection_for_avdtp_cid(a2dp_source_cid); 737 if (connection != NULL){ 738 // sdp discovery has started: post-pone action, reserve sep discovery mechanism 739 connection->a2dp_source_discover_seps = true; 740 } 741 } 742 // setup state 743 a2dp_source_state = A2DP_W4_CONNECTED; 744 a2dp_source_cid = outgoing_cid; 745 *avdtp_cid = outgoing_cid; 746 747 } else { 748 // check state 749 switch (a2dp_source_state){ 750 case A2DP_IDLE: 751 case A2DP_CONNECTED: 752 // restart process e.g. if there no suitable stream endpoints or they had been in use 753 outgoing_active = true; 754 a2dp_source_state = A2DP_DISCOVER_SEPS; 755 *avdtp_cid = connection->avdtp_cid; 756 a2dp_start_discovering_seps(connection); 757 break; 758 default: 759 return ERROR_CODE_COMMAND_DISALLOWED; 760 } 761 } 762 return ERROR_CODE_SUCCESS; 763 } 764 765 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 766 return avdtp_disconnect(avdtp_cid); 767 } 768 769 770 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 771 return avdtp_start_stream(avdtp_cid, local_seid); 772 } 773 774 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 775 return avdtp_suspend_stream(avdtp_cid, local_seid); 776 } 777 778 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 779 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 780 } 781 782 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 783 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 784 } 785 786 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){ 787 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 788 } 789 790 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){ 791 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 792 } 793 794 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 795 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 796 } 797 798 static uint8_t a2dp_source_config_init(uint8_t local_seid, uint8_t remote_seid, avdtp_media_codec_type_t codec_type) { 799 800 // lookup local stream endpoint 801 avdtp_stream_endpoint_t * local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 802 if (local_stream_endpoint == NULL){ 803 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 804 } 805 806 // lookup remote stream endpoint 807 avdtp_sep_t * remote_sep = NULL; 808 uint8_t i; 809 for (i=0;i<num_remote_seps;i++){ 810 if (remote_seps[i].seid == remote_seid){ 811 remote_sep = &remote_seps[i]; 812 } 813 } 814 if (remote_sep == NULL){ 815 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 816 } 817 818 // set media configuration 819 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 820 local_stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 821 local_stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 822 // remote seid to use 823 local_stream_endpoint->set_config_remote_seid = remote_seid; 824 // enable delay reporting if supported 825 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 826 local_stream_endpoint->remote_configuration_bitmap = store_bit16(local_stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 827 } 828 829 // suitable Sink stream endpoint found, configure it 830 sc.local_stream_endpoint = local_stream_endpoint; 831 a2dp_source_have_config = true; 832 833 return ERROR_CODE_SUCCESS; 834 } 835 836 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){ 837 838 if (a2dp_source_cid != a2dp_cid){ 839 return ERROR_CODE_COMMAND_DISALLOWED; 840 } 841 842 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 843 if (connection == NULL){ 844 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 845 } 846 847 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_SBC); 848 if (status != 0) { 849 return status; 850 } 851 // set config in reserved buffer 852 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 853 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 854 avdtp_config_sbc_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 855 856 return ERROR_CODE_SUCCESS; 857 } 858 859 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){ 860 861 if (a2dp_source_cid != a2dp_cid){ 862 return ERROR_CODE_COMMAND_DISALLOWED; 863 } 864 865 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 866 if (connection == NULL){ 867 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 868 } 869 870 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 871 if (status != 0) { 872 return status; 873 } 874 875 // set config in reserved buffer 876 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) sc.local_stream_endpoint->media_codec_info; 877 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 878 avdtp_config_mpeg_audio_store( sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 879 880 return ERROR_CODE_SUCCESS; 881 } 882 883 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){ 884 885 if (a2dp_source_cid != a2dp_cid){ 886 return ERROR_CODE_COMMAND_DISALLOWED; 887 } 888 889 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(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){ 906 907 if (a2dp_source_cid != a2dp_cid){ 908 return ERROR_CODE_COMMAND_DISALLOWED; 909 } 910 911 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 if (a2dp_source_cid != a2dp_cid){ 931 return ERROR_CODE_COMMAND_DISALLOWED; 932 } 933 934 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 935 if (connection == NULL){ 936 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 937 } 938 939 uint8_t status = a2dp_source_config_init(local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 940 if (status != 0) { 941 return status; 942 } 943 944 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 945 sc.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 946 947 return status; 948 } 949 950 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 951 if (a2dp_source_cid != avdtp_cid){ 952 return ERROR_CODE_COMMAND_DISALLOWED; 953 } 954 955 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 956 if (connection == NULL){ 957 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 958 } 959 960 if (a2dp_source_state != A2DP_STREAMING_OPENED) { 961 return ERROR_CODE_COMMAND_DISALLOWED; 962 } 963 964 btstack_assert(sc.local_stream_endpoint != NULL); 965 966 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 967 968 avdtp_media_codec_type_t codec_type = sc.local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 969 uint8_t codec_info_len; 970 switch (codec_type){ 971 case AVDTP_CODEC_SBC: 972 codec_info_len = 4; 973 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 974 avdtp_config_sbc_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 975 break; 976 case AVDTP_CODEC_MPEG_1_2_AUDIO: 977 codec_info_len = 4; 978 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 979 avdtp_config_mpeg_audio_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 980 break; 981 case AVDTP_CODEC_MPEG_2_4_AAC: 982 codec_info_len = 6; 983 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 984 avdtp_config_mpeg_aac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 985 break; 986 case AVDTP_CODEC_ATRAC_FAMILY: 987 codec_info_len = 7; 988 (void)memcpy(sc.local_stream_endpoint->media_codec_info, sc.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 989 avdtp_config_atrac_set_sampling_frequency(sc.local_stream_endpoint->media_codec_info, sampling_frequency); 990 break; 991 default: 992 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 993 } 994 995 avdtp_capabilities_t new_configuration; 996 new_configuration.media_codec.media_type = AVDTP_AUDIO; 997 new_configuration.media_codec.media_codec_type = codec_type; 998 new_configuration.media_codec.media_codec_information_len = codec_info_len; 999 new_configuration.media_codec.media_codec_information = sc.local_stream_endpoint->media_codec_info; 1000 1001 // start reconfigure 1002 a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 1003 1004 return avdtp_source_reconfigure( 1005 avdtp_cid, 1006 avdtp_stream_endpoint_seid(sc.local_stream_endpoint), 1007 sc.local_stream_endpoint->remote_sep.seid, 1008 1 << AVDTP_MEDIA_CODEC, 1009 new_configuration 1010 ); 1011 } 1012