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.h" 61 #include "classic/a2dp_source.h" 62 #include "classic/avdtp_source.h" 63 #include "classic/avdtp_util.h" 64 #include "classic/sdp_util.h" 65 #include "l2cap.h" 66 67 #define AVDTP_MAX_SEP_NUM 10 68 #define A2DP_SET_CONFIG_DELAY_MS 200 69 70 static const char * a2dp_default_source_service_name = "BTstack A2DP Source Service"; 71 static const char * a2dp_default_source_service_provider_name = "BTstack A2DP Source Service Provider"; 72 73 static btstack_packet_handler_t a2dp_source_packet_handler_user; 74 static uint8_t (*a2dp_source_media_config_validator)(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size); 75 76 // config process - singletons using sep_discovery_cid is used as mutex 77 static uint16_t a2dp_source_sep_discovery_cid; 78 static uint16_t a2dp_source_sep_discovery_count; 79 static uint16_t a2dp_source_sep_discovery_index; 80 static avdtp_sep_t a2dp_source_sep_discovery_seps[AVDTP_MAX_SEP_NUM]; 81 static btstack_timer_source_t a2dp_source_set_config_timer; 82 static bool a2dp_source_set_config_timer_active; 83 84 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 85 static void a2dp_discover_seps_with_next_waiting_connection(void); 86 87 static void a2dp_source_streaming_emit_connection_failed(avdtp_connection_t *connection, uint8_t status) { 88 uint8_t event[14]; 89 int pos = 0; 90 event[pos++] = HCI_EVENT_A2DP_META; 91 event[pos++] = sizeof(event) - 2; 92 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 93 little_endian_store_16(event, pos, connection->avdtp_cid); 94 pos += 2; 95 reverse_bd_addr(connection->remote_addr, &event[pos]); 96 pos += 6; 97 event[pos++] = 0; 98 event[pos++] = 0; 99 event[pos++] = status; 100 101 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 102 } 103 104 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){ 105 uint8_t* attribute; 106 de_create_sequence(service); 107 108 // 0x0000 "Service Record Handle" 109 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 110 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 111 112 // 0x0001 "Service Class ID List" 113 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 114 attribute = de_push_sequence(service); 115 { 116 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE); 117 } 118 de_pop_sequence(service, attribute); 119 120 // 0x0004 "Protocol Descriptor List" 121 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 122 attribute = de_push_sequence(service); 123 { 124 uint8_t* l2cpProtocol = de_push_sequence(attribute); 125 { 126 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 127 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVDTP); 128 } 129 de_pop_sequence(attribute, l2cpProtocol); 130 131 uint8_t* avProtocol = de_push_sequence(attribute); 132 { 133 de_add_number(avProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP); // avProtocol_service 134 de_add_number(avProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 135 } 136 de_pop_sequence(attribute, avProtocol); 137 } 138 de_pop_sequence(service, attribute); 139 140 // 0x0005 "Public Browse Group" 141 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 142 attribute = de_push_sequence(service); 143 { 144 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 145 } 146 de_pop_sequence(service, attribute); 147 148 // 0x0009 "Bluetooth Profile Descriptor List" 149 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 150 attribute = de_push_sequence(service); 151 { 152 uint8_t *a2dProfile = de_push_sequence(attribute); 153 { 154 de_add_number(a2dProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION); 155 de_add_number(a2dProfile, DE_UINT, DE_SIZE_16, 0x0103); 156 } 157 de_pop_sequence(attribute, a2dProfile); 158 } 159 de_pop_sequence(service, attribute); 160 161 162 // 0x0100 "Service Name" 163 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 164 if (service_name){ 165 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 166 } else { 167 de_add_data(service, DE_STRING, strlen(a2dp_default_source_service_name), (uint8_t *) a2dp_default_source_service_name); 168 } 169 170 // 0x0100 "Provider Name" 171 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 172 if (service_provider_name){ 173 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 174 } else { 175 de_add_data(service, DE_STRING, strlen(a2dp_default_source_service_provider_name), (uint8_t *) a2dp_default_source_service_provider_name); 176 } 177 178 // 0x0311 "Supported Features" 179 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 180 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 181 } 182 183 static void a2dp_signaling_emit_reconfigured(uint16_t cid, uint8_t local_seid, uint8_t status){ 184 uint8_t event[7]; 185 int pos = 0; 186 event[pos++] = HCI_EVENT_A2DP_META; 187 event[pos++] = sizeof(event) - 2; 188 event[pos++] = A2DP_SUBEVENT_STREAM_RECONFIGURED; 189 little_endian_store_16(event, pos, cid); 190 pos += 2; 191 event[pos++] = local_seid; 192 event[pos++] = status; 193 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 194 } 195 196 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 197 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 198 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 199 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 200 a2dp_source_set_config_timer_active = false; 201 202 log_info("Set Config timer fired, avdtp_cid 0x%02x", avdtp_cid); 203 204 if (connection == NULL) { 205 a2dp_discover_seps_with_next_waiting_connection(); 206 return; 207 } 208 209 if (connection->a2dp_source_stream_endpoint_configured) return; 210 avdtp_source_discover_stream_endpoints(avdtp_cid); 211 } 212 213 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 214 log_info("Set Config timer start for cid 0%02x", avdtp_cid); 215 a2dp_source_set_config_timer_active = true; 216 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 217 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 218 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 219 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 220 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 221 } 222 223 static void a2dp_source_set_config_timer_restart(void){ 224 log_info("Set Config timer restart"); 225 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 226 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 227 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 228 } 229 230 static void a2dp_source_set_config_timer_stop(void){ 231 if (a2dp_source_set_config_timer_active == false) return; 232 log_info("Set Config timer stop"); 233 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 234 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 235 a2dp_source_set_config_timer_active = false; 236 } 237 238 // Discover seps, both incoming and outgoing 239 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 240 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 241 connection->a2dp_source_discover_seps = false; 242 243 a2dp_source_sep_discovery_index = 0; 244 a2dp_source_sep_discovery_count = 0; 245 memset(a2dp_source_sep_discovery_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 246 a2dp_source_sep_discovery_cid = connection->avdtp_cid; 247 248 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 249 if (connection->a2dp_source_outgoing_active){ 250 log_info("discover seps"); 251 avdtp_source_discover_stream_endpoints(connection->avdtp_cid); 252 } else { 253 log_info("wait a bit, then discover seps"); 254 a2dp_source_set_config_timer_start(connection->avdtp_cid); 255 } 256 } 257 258 static void a2dp_discover_seps_with_next_waiting_connection(void){ 259 btstack_assert(a2dp_source_sep_discovery_cid == 0); 260 btstack_linked_list_iterator_t it; 261 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 262 while (btstack_linked_list_iterator_has_next(&it)){ 263 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 264 if (!next_connection->a2dp_source_discover_seps) continue; 265 a2dp_start_discovering_seps(next_connection); 266 } 267 } 268 269 static void a2dp_source_ready_for_sep_discovery(avdtp_connection_t * connection){ 270 // start discover seps now if: 271 // - outgoing active: signaling for outgoing connection 272 // - outgoing not active: incoming connection and no sep discover ongoing 273 274 // sep discovery active? 275 if (a2dp_source_sep_discovery_cid == 0){ 276 a2dp_start_discovering_seps(connection); 277 } else { 278 // post-pone sep discovery 279 connection->a2dp_source_discover_seps = true; 280 } 281 } 282 283 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 284 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 285 avdtp_connection_t *avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); 286 btstack_assert(avdtp_connection != NULL); 287 avdtp_connection->a2dp_source_local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 288 // bail out if local seid invalid 289 if (!avdtp_connection->a2dp_source_local_stream_endpoint) return; 290 291 // stop timer 292 if (a2dp_source_sep_discovery_cid == cid) { 293 a2dp_source_set_config_timer_stop(); 294 a2dp_source_sep_discovery_cid = 0; 295 } 296 297 avdtp_connection->a2dp_source_stream_endpoint_configured = true; 298 299 switch (avdtp_connection->a2dp_source_state) { 300 case A2DP_W4_SET_CONFIGURATION: 301 // outgoing: discovery and config of remote sink sep successful, trigger stream open 302 avdtp_connection->a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 303 break; 304 case A2DP_DISCOVER_SEPS: 305 case A2DP_GET_CAPABILITIES: 306 case A2DP_W2_GET_ALL_CAPABILITIES: 307 case A2DP_DISCOVERY_DONE: 308 case A2DP_W4_GET_CONFIGURATION: 309 // incoming: wait for stream open 310 avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 311 break; 312 default: 313 // wait for configuration after sending reconfigure - keep state 314 break; 315 } 316 } 317 318 static void a2dp_source_set_config(avdtp_connection_t * connection){ 319 uint8_t remote_seid = connection->a2dp_source_local_stream_endpoint->set_config_remote_seid; 320 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); 321 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 322 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); 323 } 324 325 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 326 UNUSED(channel); 327 UNUSED(size); 328 329 uint16_t cid; 330 avdtp_connection_t * connection; 331 332 uint8_t signal_identifier; 333 uint8_t status; 334 uint8_t local_seid; 335 uint8_t remote_seid; 336 337 if (packet_type != HCI_EVENT_PACKET) return; 338 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 339 340 switch (packet[2]){ 341 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 342 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 343 connection = avdtp_get_connection_for_avdtp_cid(cid); 344 btstack_assert(connection != NULL); 345 346 status = avdtp_subevent_signaling_connection_established_get_status(packet); 347 if (status != ERROR_CODE_SUCCESS){ 348 // notify about connection error only if we're initiator 349 if (connection->a2dp_source_outgoing_active){ 350 log_info("A2DP source signaling connection failed status 0x%02x", status); 351 connection->a2dp_source_outgoing_active = false; 352 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 353 } 354 break; 355 } 356 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 357 connection->a2dp_source_state = A2DP_CONNECTED; 358 359 // notify app 360 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 361 362 // Windows 10 as Source starts SEP discovery after 1500 ms, but only if it did not get a Discover command 363 // If BTstack is configured for both roles, we need to avoid sending Discover command in Source Role for outgoing Sink connections 364 365 // For this, we trigger SDP query only if: 366 // a) this is an outgoing source connection 367 // b) this connection wasn't caused by an outgoing sink request 368 if (connection->a2dp_source_outgoing_active || !connection->a2dp_sink_outgoing_active){ 369 a2dp_source_ready_for_sep_discovery(connection); 370 } 371 break; 372 373 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 374 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 375 connection = avdtp_get_connection_for_avdtp_cid(cid); 376 btstack_assert(connection != NULL); 377 378 if (connection->a2dp_source_state == A2DP_DISCOVER_SEPS) { 379 avdtp_sep_t sep; 380 memset(&sep, 0, sizeof(avdtp_sep_t)); 381 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 382 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 383 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 384 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 385 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 386 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 387 a2dp_source_sep_discovery_count); 388 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 389 a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_count++] = sep; 390 } 391 } 392 break; 393 394 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 395 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 396 connection = avdtp_get_connection_for_avdtp_cid(cid); 397 btstack_assert(connection != NULL); 398 399 if (connection->a2dp_source_state != A2DP_DISCOVER_SEPS) break; 400 401 if (a2dp_source_sep_discovery_count > 0){ 402 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 403 a2dp_source_sep_discovery_index = 0; 404 connection->a2dp_source_have_config = false; 405 } else { 406 if (connection->a2dp_source_outgoing_active){ 407 connection->a2dp_source_outgoing_active = false; 408 connection = avdtp_get_connection_for_avdtp_cid(cid); 409 btstack_assert(connection != NULL); 410 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 411 } 412 413 // continue 414 connection->a2dp_source_state = A2DP_CONNECTED; 415 a2dp_source_sep_discovery_cid = 0; 416 a2dp_discover_seps_with_next_waiting_connection(); 417 } 418 break; 419 420 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 421 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 422 connection = avdtp_get_connection_for_avdtp_cid(cid); 423 btstack_assert(connection != NULL); 424 425 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 426 427 // forward codec capability 428 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 429 430 #ifndef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 431 // select SEP if none configured yet 432 if (connection->a2dp_source_have_config == false){ 433 // find SBC stream endpoint 434 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 435 if (stream_endpoint != NULL){ 436 // choose SBC config params 437 avdtp_configuration_sbc_t configuration; 438 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 439 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 440 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 441 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 442 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 443 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 444 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 445 446 // and pre-select this endpoint 447 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 448 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 449 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 450 } 451 } 452 #endif 453 break; 454 455 // forward codec capability 456 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 457 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_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_AUDIO_CAPABILITY); 463 break; 464 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 465 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_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_MPEG_AAC_CAPABILITY); 471 break; 472 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 473 cid = avdtp_subevent_signaling_media_codec_atrac_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_ATRAC_CAPABILITY); 479 break; 480 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 481 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 482 connection = avdtp_get_connection_for_avdtp_cid(cid); 483 btstack_assert(connection != NULL); 484 485 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 486 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 487 break; 488 489 // not forwarded 490 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 491 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 492 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 493 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 494 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 495 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 496 break; 497 498 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 499 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 500 connection = avdtp_get_connection_for_avdtp_cid(cid); 501 btstack_assert(connection != NULL); 502 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_state); 503 504 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 505 506 // store delay reporting capability 507 a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 508 509 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 510 break; 511 512 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 513 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 514 connection = avdtp_get_connection_for_avdtp_cid(cid); 515 btstack_assert(connection != NULL); 516 517 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 518 519 // forward capabilities done for endpoint 520 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 521 522 // endpoint was not suitable, check next one 523 a2dp_source_sep_discovery_index++; 524 if (a2dp_source_sep_discovery_index >= a2dp_source_sep_discovery_count){ 525 526 // emit 'all capabilities for all seps reported' 527 uint8_t event[6]; 528 uint8_t pos = 0; 529 event[pos++] = HCI_EVENT_A2DP_META; 530 event[pos++] = sizeof(event) - 2; 531 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 532 little_endian_store_16(event, pos, cid); 533 (*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 534 535 // do we have a valid config? 536 if (connection->a2dp_source_have_config){ 537 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 538 connection->a2dp_source_have_config = false; 539 break; 540 } 541 542 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 543 connection->a2dp_source_state = A2DP_DISCOVERY_DONE; 544 // TODO call a2dp_discover_seps_with_next_waiting_connection? 545 break; 546 #else 547 // we didn't find a suitable SBC stream endpoint, sorry. 548 if (connection->a2dp_source_outgoing_active){ 549 connection->a2dp_source_outgoing_active = false; 550 connection = avdtp_get_connection_for_avdtp_cid(cid); 551 btstack_assert(connection != NULL); 552 a2dp_source_streaming_emit_connection_failed(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 553 } 554 connection->a2dp_source_state = A2DP_CONNECTED; 555 a2dp_source_sep_discovery_cid = 0; 556 a2dp_discover_seps_with_next_waiting_connection(); 557 #endif 558 } 559 break; 560 561 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 562 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 563 connection = avdtp_get_connection_for_avdtp_cid(cid); 564 btstack_assert(connection != NULL); 565 566 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 567 break; 568 569 // forward codec configuration 570 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 571 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 572 a2dp_handle_received_configuration(packet, local_seid); 573 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 574 break; 575 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 576 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 577 a2dp_handle_received_configuration(packet, local_seid); 578 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 579 break; 580 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 581 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 582 a2dp_handle_received_configuration(packet, local_seid); 583 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 584 break; 585 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 586 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 587 a2dp_handle_received_configuration(packet, local_seid); 588 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 589 break; 590 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 591 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 592 a2dp_handle_received_configuration(packet, local_seid); 593 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 594 break; 595 596 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 597 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 598 break; 599 600 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 601 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 602 connection = avdtp_get_connection_for_avdtp_cid(cid); 603 btstack_assert(connection != NULL); 604 605 if (connection->a2dp_source_state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 606 607 connection->a2dp_source_outgoing_active = false; 608 status = avdtp_subevent_streaming_connection_established_get_status(packet); 609 if (status != ERROR_CODE_SUCCESS){ 610 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 611 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 612 break; 613 } 614 615 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 616 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 617 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 618 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 619 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 620 break; 621 622 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 623 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 624 connection = avdtp_get_connection_for_avdtp_cid(cid); 625 btstack_assert(connection != NULL); 626 627 // restart set config timer while remote is active for current cid 628 if (a2dp_source_set_config_timer_active && 629 (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && 630 (cid == a2dp_source_sep_discovery_cid)){ 631 632 a2dp_source_set_config_timer_restart(); 633 break; 634 } 635 636 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 637 638 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_state, cid); 639 640 switch (connection->a2dp_source_state){ 641 case A2DP_GET_CAPABILITIES: 642 remote_seid = a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].seid; 643 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 644 avdtp_source_get_all_capabilities(cid, remote_seid); 645 return; 646 647 case A2DP_SET_CONFIGURATION: 648 a2dp_source_set_config(connection); 649 return; 650 651 case A2DP_W2_OPEN_STREAM_WITH_SEID: 652 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); 653 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 654 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), connection->a2dp_source_local_stream_endpoint->remote_sep.seid); 655 break; 656 657 case A2DP_W2_RECONFIGURE_WITH_SEID: 658 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); 659 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), ERROR_CODE_SUCCESS); 660 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 661 break; 662 663 case A2DP_STREAMING_OPENED: 664 switch (signal_identifier){ 665 case AVDTP_SI_START: 666 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 667 break; 668 case AVDTP_SI_SUSPEND: 669 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 670 break; 671 case AVDTP_SI_ABORT: 672 case AVDTP_SI_CLOSE: 673 a2dp_emit_stream_event(a2dp_source_packet_handler_user, cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 674 break; 675 default: 676 break; 677 } 678 break; 679 680 default: 681 break; 682 } 683 break; 684 685 case AVDTP_SUBEVENT_SIGNALING_REJECT: 686 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 687 connection = avdtp_get_connection_for_avdtp_cid(cid); 688 btstack_assert(connection != NULL); 689 690 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 691 692 switch (connection->a2dp_source_state) { 693 case A2DP_W2_RECONFIGURE_WITH_SEID: 694 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); 695 a2dp_signaling_emit_reconfigured(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), ERROR_CODE_UNSPECIFIED_ERROR); 696 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 697 break; 698 default: 699 connection->a2dp_source_state = A2DP_CONNECTED; 700 break; 701 } 702 703 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 704 break; 705 706 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 707 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 708 connection = avdtp_get_connection_for_avdtp_cid(cid); 709 btstack_assert(connection != NULL); 710 711 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 712 713 connection->a2dp_source_state = A2DP_CONNECTED; 714 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 715 break; 716 717 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 718 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 719 connection = avdtp_get_connection_for_avdtp_cid(cid); 720 btstack_assert(connection != NULL); 721 722 connection->a2dp_source_state = A2DP_CONFIGURED; 723 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 724 break; 725 726 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 727 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 728 connection = avdtp_get_connection_for_avdtp_cid(cid); 729 btstack_assert(connection != NULL); 730 731 // connect/release are passed on to app 732 if (a2dp_source_sep_discovery_cid == cid){ 733 a2dp_source_set_config_timer_stop(); 734 connection->a2dp_source_stream_endpoint_configured = false; 735 connection->a2dp_source_local_stream_endpoint = NULL; 736 737 connection->a2dp_source_state = A2DP_IDLE; 738 a2dp_source_sep_discovery_cid = 0; 739 } 740 a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 741 break; 742 743 default: 744 break; 745 } 746 } 747 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 748 btstack_assert(callback != NULL); 749 750 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 751 a2dp_source_packet_handler_user = callback; 752 } 753 754 void a2dp_source_init(void){ 755 a2dp_init(); 756 avdtp_source_init(); 757 } 758 759 void a2dp_source_deinit(void){ 760 a2dp_deinit(); 761 avdtp_source_deinit(); 762 a2dp_source_packet_handler_user = NULL; 763 a2dp_source_media_config_validator = NULL; 764 a2dp_source_sep_discovery_cid = 0; 765 } 766 767 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 768 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 769 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 770 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 771 if (!stream_endpoint){ 772 return NULL; 773 } 774 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 775 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 776 codec_capabilities, codec_capabilities_len); 777 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 778 779 // store user codec configuration buffer 780 stream_endpoint->media_codec_type = media_codec_type; 781 stream_endpoint->media_codec_configuration_info = codec_configuration; 782 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 783 784 return stream_endpoint; 785 } 786 787 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 788 avdtp_source_finalize_stream_endpoint(stream_endpoint); 789 } 790 791 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 792 793 uint16_t outgoing_cid; 794 795 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 796 if (connection == NULL){ 797 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 798 if (status != ERROR_CODE_SUCCESS) { 799 // if there's already a connection for for remote addr, avdtp_source_connect fails, 800 // but the stream will get set-up nevertheless 801 return status; 802 } 803 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 804 btstack_assert(connection != NULL); 805 806 // setup state 807 connection->a2dp_source_outgoing_active = true; 808 connection->a2dp_source_state = A2DP_W4_CONNECTED; 809 *avdtp_cid = outgoing_cid; 810 811 } else { 812 if (connection->a2dp_source_outgoing_active || connection->a2dp_source_stream_endpoint_configured) { 813 return ERROR_CODE_COMMAND_DISALLOWED; 814 } 815 816 // check state 817 switch (connection->a2dp_source_state){ 818 case A2DP_IDLE: 819 case A2DP_CONNECTED: 820 // restart process e.g. if there no suitable stream endpoints or they had been in use 821 connection->a2dp_source_outgoing_active = true; 822 *avdtp_cid = connection->avdtp_cid; 823 a2dp_source_ready_for_sep_discovery(connection); 824 break; 825 default: 826 return ERROR_CODE_COMMAND_DISALLOWED; 827 } 828 } 829 return ERROR_CODE_SUCCESS; 830 } 831 832 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 833 return avdtp_disconnect(avdtp_cid); 834 } 835 836 837 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 838 return avdtp_start_stream(avdtp_cid, local_seid); 839 } 840 841 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 842 return avdtp_suspend_stream(avdtp_cid, local_seid); 843 } 844 845 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 846 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 847 } 848 849 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 850 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 851 } 852 853 int a2dp_source_stream_send_media_payload(uint16_t avdtp_cid, uint8_t local_seid, uint8_t * storage, int num_bytes_to_copy, uint8_t num_frames, uint8_t marker){ 854 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 855 } 856 857 uint8_t a2dp_source_stream_send_media_payload_rtp(uint16_t a2dp_cid, uint8_t local_seid, uint8_t marker, uint8_t * payload, uint16_t payload_size){ 858 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 859 } 860 861 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 862 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 863 } 864 865 static uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 866 avdtp_media_codec_type_t codec_type) { 867 868 // check state 869 switch (connection->a2dp_source_state){ 870 case A2DP_DISCOVERY_DONE: 871 case A2DP_GET_CAPABILITIES: 872 break; 873 default: 874 return ERROR_CODE_COMMAND_DISALLOWED; 875 } 876 877 // lookup local stream endpoint 878 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 879 if (stream_endpoint == NULL){ 880 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 881 } 882 883 // lookup remote stream endpoint 884 avdtp_sep_t * remote_sep = NULL; 885 uint8_t i; 886 for (i=0; i < a2dp_source_sep_discovery_count; i++){ 887 if (a2dp_source_sep_discovery_seps[i].seid == remote_seid){ 888 remote_sep = &a2dp_source_sep_discovery_seps[i]; 889 } 890 } 891 if (remote_sep == NULL){ 892 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 893 } 894 895 // set media configuration 896 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 897 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 898 stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 899 // remote seid to use 900 stream_endpoint->set_config_remote_seid = remote_seid; 901 // enable delay reporting if supported 902 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 903 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 904 } 905 906 // suitable Sink stream endpoint found, configure it 907 connection->a2dp_source_local_stream_endpoint = stream_endpoint; 908 connection->a2dp_source_have_config = true; 909 910 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 911 // continue outgoing configuration 912 if (connection->a2dp_source_state == A2DP_DISCOVERY_DONE){ 913 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 914 } 915 #endif 916 917 return ERROR_CODE_SUCCESS; 918 } 919 920 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){ 921 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 922 if (connection == NULL){ 923 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 924 } 925 926 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 927 if (status != 0) { 928 return status; 929 } 930 // set config in reserved buffer 931 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 932 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 933 avdtp_config_sbc_store(connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 934 935 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 936 a2dp_source_set_config(connection); 937 #endif 938 939 return ERROR_CODE_SUCCESS; 940 } 941 942 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){ 943 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 944 if (connection == NULL){ 945 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 946 } 947 948 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 949 if (status != 0) { 950 return status; 951 } 952 953 // set config in reserved buffer 954 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *)connection->a2dp_source_local_stream_endpoint->media_codec_info; 955 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 956 avdtp_config_mpeg_audio_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 957 958 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 959 a2dp_source_set_config(connection); 960 #endif 961 962 return ERROR_CODE_SUCCESS; 963 } 964 965 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){ 966 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 967 if (connection == NULL){ 968 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 969 } 970 971 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 972 if (status != 0) { 973 return status; 974 } 975 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 976 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 977 avdtp_config_mpeg_aac_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 978 979 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 980 a2dp_source_set_config(connection); 981 #endif 982 983 return ERROR_CODE_SUCCESS; 984 } 985 986 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){ 987 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 988 if (connection == NULL){ 989 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 990 } 991 992 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 993 if (status != 0) { 994 return status; 995 } 996 997 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 998 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 999 avdtp_config_atrac_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 1000 1001 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 1002 a2dp_source_set_config(connection); 1003 #endif 1004 1005 return ERROR_CODE_SUCCESS; 1006 } 1007 1008 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 1009 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 1010 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 1011 if (connection == NULL){ 1012 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1013 } 1014 1015 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 1016 if (status != 0) { 1017 return status; 1018 } 1019 1020 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 1021 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 1022 1023 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 1024 a2dp_source_set_config(connection); 1025 #endif 1026 1027 return status; 1028 } 1029 1030 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 1031 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 1032 if (connection == NULL){ 1033 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1034 } 1035 1036 if (connection->a2dp_source_state != A2DP_STREAMING_OPENED) { 1037 return ERROR_CODE_COMMAND_DISALLOWED; 1038 } 1039 1040 btstack_assert(connection->a2dp_source_local_stream_endpoint != NULL); 1041 1042 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 1043 1044 avdtp_media_codec_type_t codec_type = connection->a2dp_source_local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 1045 uint8_t codec_info_len; 1046 switch (codec_type){ 1047 case AVDTP_CODEC_SBC: 1048 codec_info_len = 4; 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_sbc_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1051 break; 1052 case AVDTP_CODEC_MPEG_1_2_AUDIO: 1053 codec_info_len = 4; 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_mpeg_audio_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1056 break; 1057 case AVDTP_CODEC_MPEG_2_4_AAC: 1058 codec_info_len = 6; 1059 (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); 1060 avdtp_config_mpeg_aac_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1061 break; 1062 case AVDTP_CODEC_ATRAC_FAMILY: 1063 codec_info_len = 7; 1064 (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); 1065 avdtp_config_atrac_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 1066 break; 1067 default: 1068 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1069 } 1070 1071 avdtp_capabilities_t new_configuration; 1072 new_configuration.media_codec.media_type = AVDTP_AUDIO; 1073 new_configuration.media_codec.media_codec_type = codec_type; 1074 new_configuration.media_codec.media_codec_information_len = codec_info_len; 1075 new_configuration.media_codec.media_codec_information = connection->a2dp_source_local_stream_endpoint->media_codec_info; 1076 1077 // start reconfigure 1078 connection->a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 1079 1080 return avdtp_source_reconfigure( 1081 avdtp_cid, 1082 avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), 1083 connection->a2dp_source_local_stream_endpoint->remote_sep.seid, 1084 1 << AVDTP_MEDIA_CODEC, 1085 new_configuration 1086 ); 1087 } 1088 1089 static uint8_t a2dp_source_media_config_validator_callback(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size){ 1090 uint8_t error = 0; 1091 if (a2dp_source_media_config_validator != NULL) { 1092 // update subevent id and call validator 1093 uint8_t avdtp_subevent_id = event[2]; 1094 uint8_t a2dp_subevent_id = a2dp_subevent_id_for_avdtp_subevent_id(avdtp_subevent_id); 1095 uint8_t * subevent_field = (uint8_t *) &event[2]; 1096 *subevent_field = a2dp_subevent_id; 1097 error = (*a2dp_source_media_config_validator)(stream_endpoint, event, size); 1098 *subevent_field = avdtp_subevent_id; 1099 } 1100 return error; 1101 } 1102 1103 void a2dp_source_register_media_config_validator(uint8_t (*callback)(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size)){ 1104 a2dp_source_media_config_validator = callback; 1105 avdtp_source_register_media_config_validator(&a2dp_source_media_config_validator_callback); 1106 } 1107 1108