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 BLUEKITCHEN 25 * GMBH 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 200 68 69 static const char * a2dp_default_source_service_name = "BTstack A2DP Source Service"; 70 static const char * a2dp_default_source_service_provider_name = "BTstack A2DP Source Service Provider"; 71 72 static btstack_packet_handler_t a2dp_source_packet_handler_user; 73 static uint8_t (*a2dp_source_media_config_validator)(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size); 74 75 // config process - singletons using sep_discovery_cid is used as mutex 76 static uint16_t a2dp_source_sep_discovery_cid; 77 static uint16_t a2dp_source_sep_discovery_count; 78 static uint16_t a2dp_source_sep_discovery_index; 79 static avdtp_sep_t a2dp_source_sep_discovery_seps[AVDTP_MAX_SEP_NUM]; 80 static btstack_timer_source_t a2dp_source_set_config_timer; 81 static bool a2dp_source_set_config_timer_active; 82 83 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 84 static void a2dp_discover_seps_with_next_waiting_connection(void); 85 86 static void a2dp_source_streaming_emit_connection_failed(avdtp_connection_t *connection, uint8_t status) { 87 uint8_t event[14]; 88 int pos = 0; 89 event[pos++] = HCI_EVENT_A2DP_META; 90 event[pos++] = sizeof(event) - 2; 91 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 92 little_endian_store_16(event, pos, connection->avdtp_cid); 93 pos += 2; 94 reverse_bd_addr(connection->remote_addr, &event[pos]); 95 pos += 6; 96 event[pos++] = 0; 97 event[pos++] = 0; 98 event[pos++] = status; 99 100 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 101 } 102 103 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){ 104 uint8_t* attribute; 105 de_create_sequence(service); 106 107 // 0x0000 "Service Record Handle" 108 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 109 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 110 111 // 0x0001 "Service Class ID List" 112 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 113 attribute = de_push_sequence(service); 114 { 115 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); 116 } 117 de_pop_sequence(service, attribute); 118 119 // 0x0004 "Protocol Descriptor List" 120 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 121 attribute = de_push_sequence(service); 122 { 123 uint8_t* l2cpProtocol = de_push_sequence(attribute); 124 { 125 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 126 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 127 } 128 de_pop_sequence(attribute, l2cpProtocol); 129 130 uint8_t* avProtocol = de_push_sequence(attribute); 131 { 132 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 133 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 134 } 135 de_pop_sequence(attribute, avProtocol); 136 } 137 de_pop_sequence(service, attribute); 138 139 // 0x0005 "Public Browse Group" 140 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 141 attribute = de_push_sequence(service); 142 { 143 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 144 } 145 de_pop_sequence(service, attribute); 146 147 // 0x0009 "Bluetooth Profile Descriptor List" 148 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 149 attribute = de_push_sequence(service); 150 { 151 uint8_t *a2dProfile = de_push_sequence(attribute); 152 { 153 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 154 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 155 } 156 de_pop_sequence(attribute, a2dProfile); 157 } 158 de_pop_sequence(service, attribute); 159 160 161 // 0x0100 "Service Name" 162 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 163 if (service_name){ 164 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 165 } else { 166 de_add_data(service, DE_STRING, strlen(a2dp_default_source_service_name), (uint8_t *) a2dp_default_source_service_name); 167 } 168 169 // 0x0100 "Provider Name" 170 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 171 if (service_provider_name){ 172 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 173 } else { 174 de_add_data(service, DE_STRING, strlen(a2dp_default_source_service_provider_name), (uint8_t *) a2dp_default_source_service_provider_name); 175 } 176 177 // 0x0311 "Supported Features" 178 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 179 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 180 } 181 182 static void a2dp_signaling_emit_reconfigured(uint16_t cid, uint8_t local_seid, uint8_t status){ 183 uint8_t event[7]; 184 int pos = 0; 185 event[pos++] = HCI_EVENT_A2DP_META; 186 event[pos++] = sizeof(event) - 2; 187 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 188 little_endian_store_16(event, pos, cid); 189 pos += 2; 190 event[pos++] = local_seid; 191 event[pos++] = status; 192 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 193 } 194 195 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 196 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 197 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 198 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 199 a2dp_source_set_config_timer_active = false; 200 201 log_info("Set Config timer fired, avdtp_cid 0x%02x", avdtp_cid); 202 203 if (connection == NULL) { 204 a2dp_discover_seps_with_next_waiting_connection(); 205 return; 206 } 207 208 if (connection->a2dp_source_stream_endpoint_configured) return; 209 avdtp_source_discover_stream_endpoints(avdtp_cid); 210 } 211 212 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 213 log_info("Set Config timer start for cid 0%02x", avdtp_cid); 214 a2dp_source_set_config_timer_active = true; 215 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 216 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 217 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 218 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 219 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 220 } 221 222 static void a2dp_source_set_config_timer_restart(void){ 223 log_info("Set Config timer restart"); 224 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 225 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 226 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 227 } 228 229 static void a2dp_source_set_config_timer_stop(void){ 230 if (a2dp_source_set_config_timer_active == false) return; 231 log_info("Set Config timer stop"); 232 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 233 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 234 a2dp_source_set_config_timer_active = false; 235 } 236 237 // Discover seps, both incoming and outgoing 238 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 239 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 240 connection->a2dp_source_discover_seps = false; 241 242 a2dp_source_sep_discovery_index = 0; 243 a2dp_source_sep_discovery_count = 0; 244 memset(a2dp_source_sep_discovery_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 245 a2dp_source_sep_discovery_cid = connection->avdtp_cid; 246 247 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 248 if (connection->a2dp_source_outgoing_active){ 249 log_info("discover seps"); 250 avdtp_source_discover_stream_endpoints(connection->avdtp_cid); 251 } else { 252 log_info("wait a bit, then discover seps"); 253 a2dp_source_set_config_timer_start(connection->avdtp_cid); 254 } 255 } 256 257 static void a2dp_discover_seps_with_next_waiting_connection(void){ 258 btstack_assert(a2dp_source_sep_discovery_cid == 0); 259 btstack_linked_list_iterator_t it; 260 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 261 while (btstack_linked_list_iterator_has_next(&it)){ 262 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 263 if (!next_connection->a2dp_source_discover_seps) continue; 264 a2dp_start_discovering_seps(next_connection); 265 } 266 } 267 268 static void a2dp_source_ready_for_sep_discovery(avdtp_connection_t * connection){ 269 // start discover seps now if: 270 // - outgoing active: signaling for outgoing connection 271 // - outgoing not active: incoming connection and no sep discover ongoing 272 273 // sep discovery active? 274 if (a2dp_source_sep_discovery_cid == 0){ 275 a2dp_start_discovering_seps(connection); 276 } else { 277 // post-pone sep discovery 278 connection->a2dp_source_discover_seps = true; 279 } 280 } 281 282 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 283 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 284 avdtp_connection_t *avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); 285 btstack_assert(avdtp_connection != NULL); 286 avdtp_connection->a2dp_source_local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 287 // bail out if local seid invalid 288 if (!avdtp_connection->a2dp_source_local_stream_endpoint) return; 289 290 // stop timer 291 if (a2dp_source_sep_discovery_cid == cid) { 292 a2dp_source_set_config_timer_stop(); 293 a2dp_source_sep_discovery_cid = 0; 294 } 295 296 avdtp_connection->a2dp_source_stream_endpoint_configured = true; 297 298 switch (avdtp_connection->a2dp_source_state) { 299 case A2DP_W4_SET_CONFIGURATION: 300 // outgoing: discovery and config of remote sink sep successful, trigger stream open 301 avdtp_connection->a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 302 break; 303 case A2DP_DISCOVER_SEPS: 304 case A2DP_GET_CAPABILITIES: 305 case A2DP_W2_GET_ALL_CAPABILITIES: 306 case A2DP_DISCOVERY_DONE: 307 case A2DP_W4_GET_CONFIGURATION: 308 // incoming: wait for stream open 309 avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 310 break; 311 default: 312 // wait for configuration after sending reconfigure - keep state 313 break; 314 } 315 } 316 317 static void a2dp_source_set_config(avdtp_connection_t * connection){ 318 uint8_t remote_seid = connection->a2dp_source_local_stream_endpoint->set_config_remote_seid; 319 log_info("A2DP initiate set configuration locally and wait for response ... local seid 0x%02x, remote seid 0x%02x", avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), remote_seid); 320 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 321 avdtp_source_set_configuration(connection->avdtp_cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), remote_seid, connection->a2dp_source_local_stream_endpoint->remote_configuration_bitmap, connection->a2dp_source_local_stream_endpoint->remote_configuration); 322 } 323 324 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 325 UNUSED(channel); 326 UNUSED(size); 327 328 uint16_t cid; 329 avdtp_connection_t * connection; 330 331 uint8_t signal_identifier; 332 uint8_t status; 333 uint8_t local_seid; 334 uint8_t remote_seid; 335 336 if (packet_type != HCI_EVENT_PACKET) return; 337 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 338 339 switch (packet[2]){ 340 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 341 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 342 connection = avdtp_get_connection_for_avdtp_cid(cid); 343 btstack_assert(connection != NULL); 344 345 status = avdtp_subevent_signaling_connection_established_get_status(packet); 346 if (status != ERROR_CODE_SUCCESS){ 347 // notify about connection error only if we're initiator 348 if (connection->a2dp_source_outgoing_active){ 349 log_info("A2DP source signaling connection failed status 0x%02x", status); 350 connection->a2dp_source_outgoing_active = false; 351 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 352 } 353 break; 354 } 355 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 356 connection->a2dp_source_state = A2DP_CONNECTED; 357 358 // notify app 359 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 360 361 // continue 362 a2dp_source_ready_for_sep_discovery(connection); 363 break; 364 365 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 366 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 367 connection = avdtp_get_connection_for_avdtp_cid(cid); 368 btstack_assert(connection != NULL); 369 370 if (connection->a2dp_source_state == A2DP_DISCOVER_SEPS) { 371 avdtp_sep_t sep; 372 memset(&sep, 0, sizeof(avdtp_sep_t)); 373 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 374 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 375 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 376 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 377 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 378 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 379 a2dp_source_sep_discovery_count); 380 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 381 a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_count++] = sep; 382 } 383 } 384 break; 385 386 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 387 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 388 connection = avdtp_get_connection_for_avdtp_cid(cid); 389 btstack_assert(connection != NULL); 390 391 if (connection->a2dp_source_state != A2DP_DISCOVER_SEPS) break; 392 393 if (a2dp_source_sep_discovery_count > 0){ 394 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 395 a2dp_source_sep_discovery_index = 0; 396 connection->a2dp_source_have_config = false; 397 } else { 398 if (connection->a2dp_source_outgoing_active){ 399 connection->a2dp_source_outgoing_active = false; 400 connection = avdtp_get_connection_for_avdtp_cid(cid); 401 btstack_assert(connection != NULL); 402 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 403 } 404 405 // continue 406 connection->a2dp_source_state = A2DP_CONNECTED; 407 a2dp_source_sep_discovery_cid = 0; 408 a2dp_discover_seps_with_next_waiting_connection(); 409 } 410 break; 411 412 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 413 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 414 connection = avdtp_get_connection_for_avdtp_cid(cid); 415 btstack_assert(connection != NULL); 416 417 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 418 419 // forward codec capability 420 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 421 422 #ifndef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 423 // select SEP if none configured yet 424 if (connection->a2dp_source_have_config == false){ 425 // find SBC stream endpoint 426 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 427 if (stream_endpoint != NULL){ 428 // choose SBC config params 429 avdtp_configuration_sbc_t configuration; 430 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 431 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 432 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 433 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 434 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 435 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 436 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 437 438 // and pre-select this endpoint 439 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 440 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 441 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 442 } 443 } 444 #endif 445 break; 446 447 // forward codec capability 448 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 449 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 450 connection = avdtp_get_connection_for_avdtp_cid(cid); 451 btstack_assert(connection != NULL); 452 453 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 454 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 455 break; 456 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 457 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 458 connection = avdtp_get_connection_for_avdtp_cid(cid); 459 btstack_assert(connection != NULL); 460 461 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 462 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 463 break; 464 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 465 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 466 connection = avdtp_get_connection_for_avdtp_cid(cid); 467 btstack_assert(connection != NULL); 468 469 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 470 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 471 break; 472 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 473 cid = avdtp_subevent_signaling_media_codec_other_capability_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 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 479 break; 480 481 // not forwarded 482 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 483 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 484 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 485 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 486 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 487 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 488 break; 489 490 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 491 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 492 connection = avdtp_get_connection_for_avdtp_cid(cid); 493 btstack_assert(connection != NULL); 494 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_state); 495 496 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 497 498 // store delay reporting capability 499 a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 500 501 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 502 break; 503 504 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 505 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 506 connection = avdtp_get_connection_for_avdtp_cid(cid); 507 btstack_assert(connection != NULL); 508 509 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 510 511 // forward capabilities done for endpoint 512 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 513 514 // endpoint was not suitable, check next one 515 a2dp_source_sep_discovery_index++; 516 if (a2dp_source_sep_discovery_index >= a2dp_source_sep_discovery_count){ 517 518 // emit 'all capabilities for all seps reported' 519 uint8_t event[6]; 520 uint8_t pos = 0; 521 event[pos++] = HCI_EVENT_A2DP_META; 522 event[pos++] = sizeof(event) - 2; 523 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 524 little_endian_store_16(event, pos, cid); 525 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 526 527 // do we have a valid config? 528 if (connection->a2dp_source_have_config){ 529 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 530 connection->a2dp_source_have_config = false; 531 break; 532 } 533 534 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 535 connection->a2dp_source_state = A2DP_DISCOVERY_DONE; 536 // TODO call a2dp_discover_seps_with_next_waiting_connection? 537 break; 538 #else 539 // we didn't find a suitable SBC stream endpoint, sorry. 540 if (connection->a2dp_source_outgoing_active){ 541 connection->a2dp_source_outgoing_active = false; 542 connection = avdtp_get_connection_for_avdtp_cid(cid); 543 btstack_assert(connection != NULL); 544 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 545 } 546 connection->a2dp_source_state = A2DP_CONNECTED; 547 a2dp_source_sep_discovery_cid = 0; 548 a2dp_discover_seps_with_next_waiting_connection(); 549 #endif 550 } 551 break; 552 553 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 554 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 555 connection = avdtp_get_connection_for_avdtp_cid(cid); 556 btstack_assert(connection != NULL); 557 558 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 559 break; 560 561 // forward codec configuration 562 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 563 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 564 a2dp_handle_received_configuration(packet, local_seid); 565 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 566 break; 567 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 568 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 569 a2dp_handle_received_configuration(packet, local_seid); 570 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 571 break; 572 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 573 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 574 a2dp_handle_received_configuration(packet, local_seid); 575 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 576 break; 577 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 578 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 579 a2dp_handle_received_configuration(packet, local_seid); 580 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 581 break; 582 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 583 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 584 a2dp_handle_received_configuration(packet, local_seid); 585 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 586 break; 587 588 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 589 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 590 break; 591 592 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 593 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 594 connection = avdtp_get_connection_for_avdtp_cid(cid); 595 btstack_assert(connection != NULL); 596 597 if (connection->a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 598 599 connection->a2dp_source_outgoing_active = false; 600 status = avdtp_subevent_streaming_connection_established_get_status(packet); 601 if (status != ERROR_CODE_SUCCESS){ 602 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 603 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 604 break; 605 } 606 607 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 608 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 609 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 610 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 611 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 612 break; 613 614 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 615 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 616 connection = avdtp_get_connection_for_avdtp_cid(cid); 617 btstack_assert(connection != NULL); 618 619 // restart set config timer while remote is active for current cid 620 if (a2dp_source_set_config_timer_active && 621 (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && 622 (cid == a2dp_source_sep_discovery_cid)){ 623 624 a2dp_source_set_config_timer_restart(); 625 break; 626 } 627 628 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 629 630 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_state, cid); 631 632 switch (connection->a2dp_source_state){ 633 case A2DP_GET_CAPABILITIES: 634 remote_seid = a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].seid; 635 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 636 avdtp_source_get_all_capabilities(cid, remote_seid); 637 return; 638 639 case A2DP_SET_CONFIGURATION: 640 a2dp_source_set_config(connection); 641 return; 642 643 case A2DP_W2_OPEN_STREAM_WITH_SEID: 644 log_info("A2DP open stream ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), connection->a2dp_source_local_stream_endpoint->remote_sep.seid); 645 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 646 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), connection->a2dp_source_local_stream_endpoint->remote_sep.seid); 647 break; 648 649 case A2DP_W2_RECONFIGURE_WITH_SEID: 650 log_info("A2DP reconfigured ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), connection->a2dp_source_local_stream_endpoint->remote_sep.seid); 651 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), ERROR_CODE_SUCCESS); 652 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 653 break; 654 655 case A2DP_STREAMING_OPENED: 656 switch (signal_identifier){ 657 case AVDTP_SI_START: 658 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 659 break; 660 case AVDTP_SI_SUSPEND: 661 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 662 break; 663 case AVDTP_SI_ABORT: 664 case AVDTP_SI_CLOSE: 665 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 666 break; 667 default: 668 break; 669 } 670 break; 671 672 default: 673 break; 674 } 675 break; 676 677 case AVDTP_SUBEVENT_SIGNALING_REJECT: 678 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 679 connection = avdtp_get_connection_for_avdtp_cid(cid); 680 btstack_assert(connection != NULL); 681 682 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 683 684 switch (connection->a2dp_source_state) { 685 case A2DP_W2_RECONFIGURE_WITH_SEID: 686 log_info("A2DP reconfigure failed ... local seid 0x%02x, active remote seid 0x%02x", avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), connection->a2dp_source_local_stream_endpoint->remote_sep.seid); 687 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), ERROR_CODE_UNSPECIFIED_ERROR); 688 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 689 break; 690 default: 691 connection->a2dp_source_state = A2DP_CONNECTED; 692 break; 693 } 694 695 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 696 break; 697 698 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 699 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 700 connection = avdtp_get_connection_for_avdtp_cid(cid); 701 btstack_assert(connection != NULL); 702 703 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 704 705 connection->a2dp_source_state = A2DP_CONNECTED; 706 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 707 break; 708 709 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 710 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 711 connection = avdtp_get_connection_for_avdtp_cid(cid); 712 btstack_assert(connection != NULL); 713 714 connection->a2dp_source_state = A2DP_CONFIGURED; 715 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 716 break; 717 718 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 719 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 720 connection = avdtp_get_connection_for_avdtp_cid(cid); 721 btstack_assert(connection != NULL); 722 723 // connect/release are passed on to app 724 if (a2dp_source_sep_discovery_cid == cid){ 725 a2dp_source_set_config_timer_stop(); 726 connection->a2dp_source_stream_endpoint_configured = false; 727 connection->a2dp_source_local_stream_endpoint = NULL; 728 729 connection->a2dp_source_state = A2DP_IDLE; 730 a2dp_source_sep_discovery_cid = 0; 731 } 732 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 733 break; 734 735 default: 736 break; 737 } 738 } 739 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 740 btstack_assert(callback != NULL); 741 742 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 743 a2dp_source_packet_handler_user = callback; 744 } 745 746 void a2dp_source_init(void){ 747 avdtp_source_init(); 748 } 749 750 void a2dp_source_deinit(void){ 751 avdtp_source_deinit(); 752 a2dp_source_packet_handler_user = NULL; 753 a2dp_source_media_config_validator = NULL; 754 a2dp_source_sep_discovery_cid = 0; 755 } 756 757 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 758 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 759 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 760 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 761 if (!stream_endpoint){ 762 return NULL; 763 } 764 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 765 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 766 codec_capabilities, codec_capabilities_len); 767 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 768 769 // store user codec configuration buffer 770 stream_endpoint->media_codec_type = media_codec_type; 771 stream_endpoint->media_codec_configuration_info = codec_configuration; 772 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 773 774 return stream_endpoint; 775 } 776 777 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 778 avdtp_source_finalize_stream_endpoint(stream_endpoint); 779 } 780 781 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 782 783 uint16_t outgoing_cid; 784 785 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 786 if (connection == NULL){ 787 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 788 if (status != ERROR_CODE_SUCCESS) { 789 // if there's already a connection for for remote addr, avdtp_source_connect fails, 790 // but the stream will get set-up nevertheless 791 return status; 792 } 793 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 794 btstack_assert(connection != NULL); 795 796 // setup state 797 connection->a2dp_source_outgoing_active = true; 798 connection->a2dp_source_state = A2DP_W4_CONNECTED; 799 *avdtp_cid = outgoing_cid; 800 801 } else { 802 if (connection->a2dp_source_outgoing_active || connection->a2dp_source_stream_endpoint_configured) { 803 return ERROR_CODE_COMMAND_DISALLOWED; 804 } 805 806 // check state 807 switch (connection->a2dp_source_state){ 808 case A2DP_IDLE: 809 case A2DP_CONNECTED: 810 // restart process e.g. if there no suitable stream endpoints or they had been in use 811 connection->a2dp_source_outgoing_active = true; 812 *avdtp_cid = connection->avdtp_cid; 813 a2dp_source_ready_for_sep_discovery(connection); 814 break; 815 default: 816 return ERROR_CODE_COMMAND_DISALLOWED; 817 } 818 } 819 return ERROR_CODE_SUCCESS; 820 } 821 822 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 823 return avdtp_disconnect(avdtp_cid); 824 } 825 826 827 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 828 return avdtp_start_stream(avdtp_cid, local_seid); 829 } 830 831 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 832 return avdtp_suspend_stream(avdtp_cid, local_seid); 833 } 834 835 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 836 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 837 } 838 839 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 840 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 841 } 842 843 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){ 844 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 845 } 846 847 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){ 848 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 849 } 850 851 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 852 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 853 } 854 855 static uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 856 avdtp_media_codec_type_t codec_type) { 857 858 // check state 859 switch (connection->a2dp_source_state){ 860 case A2DP_DISCOVERY_DONE: 861 case A2DP_GET_CAPABILITIES: 862 break; 863 default: 864 return ERROR_CODE_COMMAND_DISALLOWED; 865 } 866 867 // lookup local stream endpoint 868 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 869 if (stream_endpoint == NULL){ 870 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 871 } 872 873 // lookup remote stream endpoint 874 avdtp_sep_t * remote_sep = NULL; 875 uint8_t i; 876 for (i=0; i < a2dp_source_sep_discovery_count; i++){ 877 if (a2dp_source_sep_discovery_seps[i].seid == remote_seid){ 878 remote_sep = &a2dp_source_sep_discovery_seps[i]; 879 } 880 } 881 if (remote_sep == NULL){ 882 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 883 } 884 885 // set media configuration 886 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 887 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 888 stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 889 // remote seid to use 890 stream_endpoint->set_config_remote_seid = remote_seid; 891 // enable delay reporting if supported 892 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 893 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 894 } 895 896 // suitable Sink stream endpoint found, configure it 897 connection->a2dp_source_local_stream_endpoint = stream_endpoint; 898 connection->a2dp_source_have_config = true; 899 900 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 901 // continue outgoing configuration 902 if (connection->a2dp_source_state == A2DP_DISCOVERY_DONE){ 903 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 904 } 905 #endif 906 907 return ERROR_CODE_SUCCESS; 908 } 909 910 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){ 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(connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 917 if (status != 0) { 918 return status; 919 } 920 // set config in reserved buffer 921 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 922 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 923 avdtp_config_sbc_store(connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 924 925 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 926 a2dp_source_set_config(connection); 927 #endif 928 929 return ERROR_CODE_SUCCESS; 930 } 931 932 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){ 933 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 934 if (connection == NULL){ 935 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 936 } 937 938 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 939 if (status != 0) { 940 return status; 941 } 942 943 // set config in reserved buffer 944 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *)connection->a2dp_source_local_stream_endpoint->media_codec_info; 945 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 946 avdtp_config_mpeg_audio_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 947 948 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 949 a2dp_source_set_config(connection); 950 #endif 951 952 return ERROR_CODE_SUCCESS; 953 } 954 955 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){ 956 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 957 if (connection == NULL){ 958 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 959 } 960 961 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 962 if (status != 0) { 963 return status; 964 } 965 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 966 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 967 avdtp_config_mpeg_aac_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 968 969 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 970 a2dp_source_set_config(connection); 971 #endif 972 973 return ERROR_CODE_SUCCESS; 974 } 975 976 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){ 977 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 978 if (connection == NULL){ 979 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 980 } 981 982 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 983 if (status != 0) { 984 return status; 985 } 986 987 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 988 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 989 avdtp_config_atrac_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 990 991 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 992 a2dp_source_set_config(connection); 993 #endif 994 995 return ERROR_CODE_SUCCESS; 996 } 997 998 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 999 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 1000 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 1001 if (connection == NULL){ 1002 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1003 } 1004 1005 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 1006 if (status != 0) { 1007 return status; 1008 } 1009 1010 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 1011 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 1012 1013 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 1014 a2dp_source_set_config(connection); 1015 #endif 1016 1017 return status; 1018 } 1019 1020 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 1021 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 1022 if (connection == NULL){ 1023 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1024 } 1025 1026 if (connection->a2dp_source_state != A2DP_STREAMING_OPENED) { 1027 return ERROR_CODE_COMMAND_DISALLOWED; 1028 } 1029 1030 btstack_assert(connection->a2dp_source_local_stream_endpoint != NULL); 1031 1032 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 1033 1034 avdtp_media_codec_type_t codec_type = connection->a2dp_source_local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 1035 uint8_t codec_info_len; 1036 switch (codec_type){ 1037 case AVDTP_CODEC_SBC: 1038 codec_info_len = 4; 1039 (void)memcpy(connection->a2dp_source_local_stream_endpoint->media_codec_info, connection->a2dp_source_local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1040 avdtp_config_sbc_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1041 break; 1042 case AVDTP_CODEC_MPEG_1_2_AUDIO: 1043 codec_info_len = 4; 1044 (void)memcpy(connection->a2dp_source_local_stream_endpoint->media_codec_info, connection->a2dp_source_local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1045 avdtp_config_mpeg_audio_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1046 break; 1047 case AVDTP_CODEC_MPEG_2_4_AAC: 1048 codec_info_len = 6; 1049 (void)memcpy(connection->a2dp_source_local_stream_endpoint->media_codec_info, connection->a2dp_source_local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1050 avdtp_config_mpeg_aac_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1051 break; 1052 case AVDTP_CODEC_ATRAC_FAMILY: 1053 codec_info_len = 7; 1054 (void)memcpy(connection->a2dp_source_local_stream_endpoint->media_codec_info, connection->a2dp_source_local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 1055 avdtp_config_atrac_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1056 break; 1057 default: 1058 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1059 } 1060 1061 avdtp_capabilities_t new_configuration; 1062 new_configuration.media_codec.media_type = AVDTP_AUDIO; 1063 new_configuration.media_codec.media_codec_type = codec_type; 1064 new_configuration.media_codec.media_codec_information_len = codec_info_len; 1065 new_configuration.media_codec.media_codec_information = connection->a2dp_source_local_stream_endpoint->media_codec_info; 1066 1067 // start reconfigure 1068 connection->a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 1069 1070 return avdtp_source_reconfigure( 1071 avdtp_cid, 1072 avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), 1073 connection->a2dp_source_local_stream_endpoint->remote_sep.seid, 1074 1 << AVDTP_MEDIA_CODEC, 1075 new_configuration 1076 ); 1077 } 1078 1079 static uint8_t a2dp_source_media_config_validator_callback(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size){ 1080 uint8_t error = 0; 1081 if (a2dp_source_media_config_validator != NULL) { 1082 // update subevent id and call validator 1083 uint8_t avdtp_subevent_id = event[2]; 1084 uint8_t a2dp_subevent_id = a2dp_subevent_id_for_avdtp_subevent_id(avdtp_subevent_id); 1085 uint8_t * subevent_field = (uint8_t *) &event[2]; 1086 *subevent_field = a2dp_subevent_id; 1087 error = (*a2dp_source_media_config_validator)(stream_endpoint, event, size); 1088 *subevent_field = avdtp_subevent_id; 1089 } 1090 return error; 1091 } 1092 1093 void a2dp_source_register_media_config_validator(uint8_t (*callback)(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size)){ 1094 a2dp_source_media_config_validator = callback; 1095 avdtp_source_register_media_config_validator(&a2dp_source_media_config_validator_callback); 1096 } 1097 1098