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 #include "a2dp.h" 67 68 #define AVDTP_MAX_SEP_NUM 10 69 #define A2DP_SET_CONFIG_DELAY_MS 200 70 71 static const char * a2dp_source_default_service_name = "BTstack A2DP Source Service"; 72 static const char * a2dp_default_source_service_provider_name = "BTstack A2DP Source Service Provider"; 73 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 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){ 88 if (service_provider_name == NULL){ 89 service_provider_name = a2dp_default_source_service_provider_name; 90 } 91 if (service_name == NULL){ 92 service_name = a2dp_source_default_service_name; 93 } 94 a2dp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE, 95 supported_features, service_name, service_provider_name); 96 } 97 98 static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){ 99 uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 100 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 101 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 102 a2dp_source_set_config_timer_active = false; 103 104 log_info("Set Config timer fired, avdtp_cid 0x%02x", avdtp_cid); 105 106 if (connection == NULL) { 107 a2dp_discover_seps_with_next_waiting_connection(); 108 return; 109 } 110 111 if (connection->a2dp_source_stream_endpoint_configured) return; 112 avdtp_source_discover_stream_endpoints(avdtp_cid); 113 } 114 115 static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){ 116 log_info("Set Config timer start for cid 0%02x", avdtp_cid); 117 a2dp_source_set_config_timer_active = true; 118 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 119 btstack_run_loop_set_timer_handler(&a2dp_source_set_config_timer,a2dp_source_set_config_timer_handler); 120 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 121 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, (void *)(uintptr_t)avdtp_cid); 122 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 123 } 124 125 static void a2dp_source_set_config_timer_restart(void){ 126 log_info("Set Config timer restart"); 127 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 128 btstack_run_loop_set_timer(&a2dp_source_set_config_timer, A2DP_SET_CONFIG_DELAY_MS); 129 btstack_run_loop_add_timer(&a2dp_source_set_config_timer); 130 } 131 132 static void a2dp_source_set_config_timer_stop(void){ 133 if (a2dp_source_set_config_timer_active == false) return; 134 log_info("Set Config timer stop"); 135 btstack_run_loop_remove_timer(&a2dp_source_set_config_timer); 136 btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL); 137 a2dp_source_set_config_timer_active = false; 138 } 139 140 // Discover seps, both incoming and outgoing 141 static void a2dp_start_discovering_seps(avdtp_connection_t * connection){ 142 connection->a2dp_source_state = A2DP_DISCOVER_SEPS; 143 connection->a2dp_source_discover_seps = false; 144 145 a2dp_source_sep_discovery_index = 0; 146 a2dp_source_sep_discovery_count = 0; 147 memset(a2dp_source_sep_discovery_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM); 148 a2dp_source_sep_discovery_cid = connection->avdtp_cid; 149 150 // if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first 151 if (connection->a2dp_source_outgoing_active){ 152 log_info("discover seps"); 153 avdtp_source_discover_stream_endpoints(connection->avdtp_cid); 154 } else { 155 log_info("wait a bit, then discover seps"); 156 a2dp_source_set_config_timer_start(connection->avdtp_cid); 157 } 158 } 159 160 static void a2dp_discover_seps_with_next_waiting_connection(void){ 161 btstack_assert(a2dp_source_sep_discovery_cid == 0); 162 btstack_linked_list_iterator_t it; 163 btstack_linked_list_iterator_init(&it, avdtp_get_connections()); 164 while (btstack_linked_list_iterator_has_next(&it)){ 165 avdtp_connection_t * next_connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 166 if (!next_connection->a2dp_source_discover_seps) continue; 167 a2dp_start_discovering_seps(next_connection); 168 } 169 } 170 171 static void a2dp_source_ready_for_sep_discovery(avdtp_connection_t * connection){ 172 // start discover seps now if: 173 // - outgoing active: signaling for outgoing connection 174 // - outgoing not active: incoming connection and no sep discover ongoing 175 176 // sep discovery active? 177 if (a2dp_source_sep_discovery_cid == 0){ 178 a2dp_start_discovering_seps(connection); 179 } else { 180 // post-pone sep discovery 181 connection->a2dp_source_discover_seps = true; 182 } 183 } 184 185 static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) { 186 uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet); 187 avdtp_connection_t *avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid); 188 btstack_assert(avdtp_connection != NULL); 189 avdtp_connection->a2dp_source_local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 190 // bail out if local seid invalid 191 if (!avdtp_connection->a2dp_source_local_stream_endpoint) return; 192 193 // stop timer 194 if (a2dp_source_sep_discovery_cid == cid) { 195 a2dp_source_set_config_timer_stop(); 196 a2dp_source_sep_discovery_cid = 0; 197 } 198 199 avdtp_connection->a2dp_source_stream_endpoint_configured = true; 200 201 switch (avdtp_connection->a2dp_source_state) { 202 case A2DP_W4_SET_CONFIGURATION: 203 // outgoing: discovery and config of remote sink sep successful, trigger stream open 204 avdtp_connection->a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID; 205 break; 206 case A2DP_DISCOVER_SEPS: 207 case A2DP_GET_CAPABILITIES: 208 case A2DP_W2_GET_ALL_CAPABILITIES: 209 case A2DP_DISCOVERY_DONE: 210 case A2DP_W4_GET_CONFIGURATION: 211 // incoming: wait for stream open 212 avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 213 break; 214 default: 215 // wait for configuration after sending reconfigure - keep state 216 break; 217 } 218 } 219 220 static void a2dp_source_set_config(avdtp_connection_t * connection){ 221 uint8_t remote_seid = connection->a2dp_source_local_stream_endpoint->set_config_remote_seid; 222 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); 223 connection->a2dp_source_state = A2DP_W4_SET_CONFIGURATION; 224 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); 225 } 226 227 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 228 UNUSED(channel); 229 UNUSED(size); 230 231 uint16_t cid; 232 avdtp_connection_t * connection; 233 234 uint8_t signal_identifier; 235 uint8_t status; 236 uint8_t local_seid; 237 uint8_t remote_seid; 238 239 if (packet_type != HCI_EVENT_PACKET) return; 240 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 241 242 switch (packet[2]){ 243 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 244 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 245 connection = avdtp_get_connection_for_avdtp_cid(cid); 246 btstack_assert(connection != NULL); 247 248 status = avdtp_subevent_signaling_connection_established_get_status(packet); 249 if (status != ERROR_CODE_SUCCESS){ 250 // notify about connection error only if we're initiator 251 if (connection->a2dp_source_outgoing_active){ 252 log_info("A2DP source signaling connection failed status 0x%02x", status); 253 connection->a2dp_source_outgoing_active = false; 254 a2dp_replace_subevent_id_and_emit_source(packet, size, 255 A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 256 } 257 break; 258 } 259 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 260 connection->a2dp_source_state = A2DP_CONNECTED; 261 262 // notify app 263 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 264 265 // Windows 10 as Source starts SEP discovery after 1500 ms, but only if it did not get a Discover command 266 // If BTstack is configured for both roles, we need to avoid sending Discover command in Source Role for outgoing Sink connections 267 268 // For this, we trigger SDP query only if: 269 // a) this is an outgoing source connection 270 // b) this connection wasn't caused by an outgoing sink request 271 if (connection->a2dp_source_outgoing_active || !connection->a2dp_sink_outgoing_active){ 272 a2dp_source_ready_for_sep_discovery(connection); 273 } 274 break; 275 276 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 277 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 278 connection = avdtp_get_connection_for_avdtp_cid(cid); 279 btstack_assert(connection != NULL); 280 281 if (connection->a2dp_source_state == A2DP_DISCOVER_SEPS) { 282 avdtp_sep_t sep; 283 memset(&sep, 0, sizeof(avdtp_sep_t)); 284 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 285 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 286 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 287 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 288 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 289 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 290 a2dp_source_sep_discovery_count); 291 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 292 a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_count++] = sep; 293 } 294 } 295 break; 296 297 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 298 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 299 connection = avdtp_get_connection_for_avdtp_cid(cid); 300 btstack_assert(connection != NULL); 301 302 if (connection->a2dp_source_state != A2DP_DISCOVER_SEPS) break; 303 304 if (a2dp_source_sep_discovery_count > 0){ 305 connection->a2dp_source_state = A2DP_GET_CAPABILITIES; 306 a2dp_source_sep_discovery_index = 0; 307 connection->a2dp_source_have_config = false; 308 } else { 309 if (connection->a2dp_source_outgoing_active){ 310 connection->a2dp_source_outgoing_active = false; 311 connection = avdtp_get_connection_for_avdtp_cid(cid); 312 btstack_assert(connection != NULL); 313 a2dp_emit_source_streaming_connection_failed(connection, 314 ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 315 } 316 317 // continue 318 connection->a2dp_source_state = A2DP_CONNECTED; 319 a2dp_source_sep_discovery_cid = 0; 320 a2dp_discover_seps_with_next_waiting_connection(); 321 } 322 break; 323 324 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 325 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 326 connection = avdtp_get_connection_for_avdtp_cid(cid); 327 btstack_assert(connection != NULL); 328 329 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 330 331 // forward codec capability 332 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 333 334 #ifndef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 335 // select SEP if none configured yet 336 if (connection->a2dp_source_have_config == false){ 337 // find SBC stream endpoint 338 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 339 if (stream_endpoint != NULL){ 340 // choose SBC config params 341 avdtp_configuration_sbc_t configuration; 342 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 343 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 344 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 345 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 346 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 347 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 348 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 349 350 // and pre-select this endpoint 351 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 352 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 353 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 354 } 355 } 356 #endif 357 break; 358 359 // forward codec capability 360 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 361 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 362 connection = avdtp_get_connection_for_avdtp_cid(cid); 363 btstack_assert(connection != NULL); 364 365 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 366 a2dp_replace_subevent_id_and_emit_source(packet, size, 367 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY); 368 break; 369 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 370 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 371 connection = avdtp_get_connection_for_avdtp_cid(cid); 372 btstack_assert(connection != NULL); 373 374 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 375 a2dp_replace_subevent_id_and_emit_source(packet, size, 376 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY); 377 break; 378 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 379 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 380 connection = avdtp_get_connection_for_avdtp_cid(cid); 381 btstack_assert(connection != NULL); 382 383 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 384 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY); 385 break; 386 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 387 cid = avdtp_subevent_signaling_media_codec_other_capability_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_GET_CAPABILITIES) break; 392 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY); 393 break; 394 395 // not forwarded 396 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 397 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 398 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 399 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 400 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 401 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 402 break; 403 404 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 405 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 406 connection = avdtp_get_connection_for_avdtp_cid(cid); 407 btstack_assert(connection != NULL); 408 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_state); 409 410 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 411 412 // store delay reporting capability 413 a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 414 415 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 416 break; 417 418 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 419 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 420 connection = avdtp_get_connection_for_avdtp_cid(cid); 421 btstack_assert(connection != NULL); 422 423 if (connection->a2dp_source_state != A2DP_GET_CAPABILITIES) break; 424 425 // forward capabilities done for endpoint 426 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 427 428 // endpoint was not suitable, check next one 429 a2dp_source_sep_discovery_index++; 430 if (a2dp_source_sep_discovery_index >= a2dp_source_sep_discovery_count){ 431 432 // emit 'all capabilities for all seps reported' 433 uint8_t event[6]; 434 uint8_t pos = 0; 435 event[pos++] = HCI_EVENT_A2DP_META; 436 event[pos++] = sizeof(event) - 2; 437 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 438 little_endian_store_16(event, pos, cid); 439 a2dp_emit_source(event, sizeof(event)); 440 441 // do we have a valid config? 442 if (connection->a2dp_source_have_config){ 443 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 444 connection->a2dp_source_have_config = false; 445 break; 446 } 447 448 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 449 connection->a2dp_source_state = A2DP_DISCOVERY_DONE; 450 // TODO call a2dp_discover_seps_with_next_waiting_connection? 451 break; 452 #else 453 // we didn't find a suitable SBC stream endpoint, sorry. 454 if (connection->a2dp_source_outgoing_active){ 455 connection->a2dp_source_outgoing_active = false; 456 connection = avdtp_get_connection_for_avdtp_cid(cid); 457 btstack_assert(connection != NULL); 458 a2dp_emit_source_streaming_connection_failed(connection, 459 ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 460 } 461 connection->a2dp_source_state = A2DP_CONNECTED; 462 a2dp_source_sep_discovery_cid = 0; 463 a2dp_discover_seps_with_next_waiting_connection(); 464 #endif 465 } 466 break; 467 468 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 469 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 470 connection = avdtp_get_connection_for_avdtp_cid(cid); 471 btstack_assert(connection != NULL); 472 473 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 474 break; 475 476 // forward codec configuration 477 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 478 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 479 a2dp_handle_received_configuration(packet, local_seid); 480 a2dp_replace_subevent_id_and_emit_source(packet, size, 481 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 482 break; 483 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 484 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 485 a2dp_handle_received_configuration(packet, local_seid); 486 a2dp_replace_subevent_id_and_emit_source(packet, size, 487 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 488 break; 489 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 490 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 491 a2dp_handle_received_configuration(packet, local_seid); 492 a2dp_replace_subevent_id_and_emit_source(packet, size, 493 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 494 break; 495 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 496 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 497 a2dp_handle_received_configuration(packet, local_seid); 498 a2dp_replace_subevent_id_and_emit_source(packet, size, 499 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 500 break; 501 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 502 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 503 a2dp_handle_received_configuration(packet, local_seid); 504 a2dp_replace_subevent_id_and_emit_source(packet, size, 505 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 506 break; 507 508 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 509 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 510 break; 511 512 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 513 cid = avdtp_subevent_streaming_connection_established_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_W4_OPEN_STREAM_WITH_SEID) break; 518 519 connection->a2dp_source_outgoing_active = false; 520 status = avdtp_subevent_streaming_connection_established_get_status(packet); 521 if (status != ERROR_CODE_SUCCESS){ 522 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 523 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 524 break; 525 } 526 527 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 528 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 529 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 530 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 531 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 532 break; 533 534 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 535 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 536 connection = avdtp_get_connection_for_avdtp_cid(cid); 537 btstack_assert(connection != NULL); 538 539 // restart set config timer while remote is active for current cid 540 if (a2dp_source_set_config_timer_active && 541 (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && 542 (cid == a2dp_source_sep_discovery_cid)){ 543 544 a2dp_source_set_config_timer_restart(); 545 break; 546 } 547 548 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 549 550 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_state, cid); 551 552 switch (connection->a2dp_source_state){ 553 case A2DP_GET_CAPABILITIES: 554 remote_seid = a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].seid; 555 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 556 avdtp_source_get_all_capabilities(cid, remote_seid); 557 return; 558 559 case A2DP_SET_CONFIGURATION: 560 a2dp_source_set_config(connection); 561 return; 562 563 case A2DP_W2_OPEN_STREAM_WITH_SEID: 564 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); 565 connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID; 566 avdtp_source_open_stream(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), connection->a2dp_source_local_stream_endpoint->remote_sep.seid); 567 break; 568 569 case A2DP_W2_RECONFIGURE_WITH_SEID: 570 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); 571 a2dp_emit_source_stream_reconfigured(cid, avdtp_stream_endpoint_seid( 572 connection->a2dp_source_local_stream_endpoint), ERROR_CODE_SUCCESS); 573 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 574 break; 575 576 case A2DP_STREAMING_OPENED: 577 switch (signal_identifier){ 578 case AVDTP_SI_START: 579 a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_STARTED); 580 break; 581 case AVDTP_SI_SUSPEND: 582 a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_SUSPENDED); 583 break; 584 case AVDTP_SI_ABORT: 585 case AVDTP_SI_CLOSE: 586 a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), A2DP_SUBEVENT_STREAM_STOPPED); 587 break; 588 default: 589 break; 590 } 591 break; 592 593 default: 594 break; 595 } 596 break; 597 598 case AVDTP_SUBEVENT_SIGNALING_REJECT: 599 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 600 connection = avdtp_get_connection_for_avdtp_cid(cid); 601 btstack_assert(connection != NULL); 602 603 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 604 605 switch (connection->a2dp_source_state) { 606 case A2DP_W2_RECONFIGURE_WITH_SEID: 607 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); 608 a2dp_emit_source_stream_reconfigured(cid, avdtp_stream_endpoint_seid( 609 connection->a2dp_source_local_stream_endpoint), ERROR_CODE_UNSPECIFIED_ERROR); 610 connection->a2dp_source_state = A2DP_STREAMING_OPENED; 611 break; 612 default: 613 connection->a2dp_source_state = A2DP_CONNECTED; 614 break; 615 } 616 617 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 618 break; 619 620 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 621 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 622 connection = avdtp_get_connection_for_avdtp_cid(cid); 623 btstack_assert(connection != NULL); 624 625 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 626 627 connection->a2dp_source_state = A2DP_CONNECTED; 628 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 629 break; 630 631 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 632 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 633 connection = avdtp_get_connection_for_avdtp_cid(cid); 634 btstack_assert(connection != NULL); 635 636 connection->a2dp_source_state = A2DP_CONFIGURED; 637 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 638 break; 639 640 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 641 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 642 connection = avdtp_get_connection_for_avdtp_cid(cid); 643 btstack_assert(connection != NULL); 644 645 // connect/release are passed on to app 646 if (a2dp_source_sep_discovery_cid == cid){ 647 a2dp_source_set_config_timer_stop(); 648 connection->a2dp_source_stream_endpoint_configured = false; 649 connection->a2dp_source_local_stream_endpoint = NULL; 650 651 connection->a2dp_source_state = A2DP_IDLE; 652 a2dp_source_sep_discovery_cid = 0; 653 } 654 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 655 break; 656 657 default: 658 break; 659 } 660 } 661 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 662 btstack_assert(callback != NULL); 663 664 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 665 a2dp_register_source_packet_handler(callback); 666 } 667 668 void a2dp_source_init(void){ 669 a2dp_init(); 670 avdtp_source_init(); 671 } 672 673 void a2dp_source_deinit(void){ 674 a2dp_deinit(); 675 avdtp_source_deinit(); 676 a2dp_source_media_config_validator = NULL; 677 a2dp_source_sep_discovery_cid = 0; 678 } 679 680 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 681 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 682 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 683 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 684 if (!stream_endpoint){ 685 return NULL; 686 } 687 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 688 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 689 codec_capabilities, codec_capabilities_len); 690 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 691 692 // store user codec configuration buffer 693 stream_endpoint->media_codec_type = media_codec_type; 694 stream_endpoint->media_codec_configuration_info = codec_configuration; 695 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 696 697 return stream_endpoint; 698 } 699 700 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 701 avdtp_source_finalize_stream_endpoint(stream_endpoint); 702 } 703 704 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 705 706 uint16_t outgoing_cid; 707 708 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 709 if (connection == NULL){ 710 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 711 if (status != ERROR_CODE_SUCCESS) { 712 // if there's already a connection for for remote addr, avdtp_source_connect fails, 713 // but the stream will get set-up nevertheless 714 return status; 715 } 716 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 717 btstack_assert(connection != NULL); 718 719 // setup state 720 connection->a2dp_source_outgoing_active = true; 721 connection->a2dp_source_state = A2DP_W4_CONNECTED; 722 *avdtp_cid = outgoing_cid; 723 724 } else { 725 if (connection->a2dp_source_outgoing_active || connection->a2dp_source_stream_endpoint_configured) { 726 return ERROR_CODE_COMMAND_DISALLOWED; 727 } 728 729 // check state 730 switch (connection->a2dp_source_state){ 731 case A2DP_IDLE: 732 case A2DP_CONNECTED: 733 // restart process e.g. if there no suitable stream endpoints or they had been in use 734 connection->a2dp_source_outgoing_active = true; 735 *avdtp_cid = connection->avdtp_cid; 736 a2dp_source_ready_for_sep_discovery(connection); 737 break; 738 default: 739 return ERROR_CODE_COMMAND_DISALLOWED; 740 } 741 } 742 return ERROR_CODE_SUCCESS; 743 } 744 745 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 746 return avdtp_disconnect(avdtp_cid); 747 } 748 749 750 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 751 return avdtp_start_stream(avdtp_cid, local_seid); 752 } 753 754 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 755 return avdtp_suspend_stream(avdtp_cid, local_seid); 756 } 757 758 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 759 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 760 } 761 762 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 763 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 764 } 765 766 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){ 767 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 768 } 769 770 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){ 771 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 772 } 773 774 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 775 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 776 } 777 778 static uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 779 avdtp_media_codec_type_t codec_type) { 780 781 // check state 782 switch (connection->a2dp_source_state){ 783 case A2DP_DISCOVERY_DONE: 784 case A2DP_GET_CAPABILITIES: 785 break; 786 default: 787 return ERROR_CODE_COMMAND_DISALLOWED; 788 } 789 790 // lookup local stream endpoint 791 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 792 if (stream_endpoint == NULL){ 793 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 794 } 795 796 // lookup remote stream endpoint 797 avdtp_sep_t * remote_sep = NULL; 798 uint8_t i; 799 for (i=0; i < a2dp_source_sep_discovery_count; i++){ 800 if (a2dp_source_sep_discovery_seps[i].seid == remote_seid){ 801 remote_sep = &a2dp_source_sep_discovery_seps[i]; 802 } 803 } 804 if (remote_sep == NULL){ 805 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 806 } 807 808 // set media configuration 809 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 810 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 811 stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 812 // remote seid to use 813 stream_endpoint->set_config_remote_seid = remote_seid; 814 // enable delay reporting if supported 815 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 816 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 817 } 818 819 // suitable Sink stream endpoint found, configure it 820 connection->a2dp_source_local_stream_endpoint = stream_endpoint; 821 connection->a2dp_source_have_config = true; 822 823 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 824 // continue outgoing configuration 825 if (connection->a2dp_source_state == A2DP_DISCOVERY_DONE){ 826 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 827 } 828 #endif 829 830 return ERROR_CODE_SUCCESS; 831 } 832 833 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){ 834 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 835 if (connection == NULL){ 836 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 837 } 838 839 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 840 if (status != 0) { 841 return status; 842 } 843 // set config in reserved buffer 844 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 845 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 846 avdtp_config_sbc_store(connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 847 848 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 849 a2dp_source_set_config(connection); 850 #endif 851 852 return ERROR_CODE_SUCCESS; 853 } 854 855 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){ 856 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 857 if (connection == NULL){ 858 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 859 } 860 861 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 862 if (status != 0) { 863 return status; 864 } 865 866 // set config in reserved buffer 867 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *)connection->a2dp_source_local_stream_endpoint->media_codec_info; 868 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 869 avdtp_config_mpeg_audio_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 870 871 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 872 a2dp_source_set_config(connection); 873 #endif 874 875 return ERROR_CODE_SUCCESS; 876 } 877 878 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){ 879 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 880 if (connection == NULL){ 881 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 882 } 883 884 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 885 if (status != 0) { 886 return status; 887 } 888 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 889 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 890 avdtp_config_mpeg_aac_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 891 892 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 893 a2dp_source_set_config(connection); 894 #endif 895 896 return ERROR_CODE_SUCCESS; 897 } 898 899 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){ 900 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 901 if (connection == NULL){ 902 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 903 } 904 905 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 906 if (status != 0) { 907 return status; 908 } 909 910 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_local_stream_endpoint->media_codec_info; 911 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 912 avdtp_config_atrac_store( connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 913 914 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 915 a2dp_source_set_config(connection); 916 #endif 917 918 return ERROR_CODE_SUCCESS; 919 } 920 921 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 922 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 923 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 924 if (connection == NULL){ 925 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 926 } 927 928 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 929 if (status != 0) { 930 return status; 931 } 932 933 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 934 connection->a2dp_source_local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 935 936 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 937 a2dp_source_set_config(connection); 938 #endif 939 940 return status; 941 } 942 943 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 944 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 945 if (connection == NULL){ 946 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 947 } 948 949 if (connection->a2dp_source_state != A2DP_STREAMING_OPENED) { 950 return ERROR_CODE_COMMAND_DISALLOWED; 951 } 952 953 btstack_assert(connection->a2dp_source_local_stream_endpoint != NULL); 954 955 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 956 957 avdtp_media_codec_type_t codec_type = connection->a2dp_source_local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 958 uint8_t codec_info_len; 959 switch (codec_type){ 960 case AVDTP_CODEC_SBC: 961 codec_info_len = 4; 962 (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); 963 avdtp_config_sbc_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 964 break; 965 case AVDTP_CODEC_MPEG_1_2_AUDIO: 966 codec_info_len = 4; 967 (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); 968 avdtp_config_mpeg_audio_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 969 break; 970 case AVDTP_CODEC_MPEG_2_4_AAC: 971 codec_info_len = 6; 972 (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); 973 avdtp_config_mpeg_aac_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 974 break; 975 case AVDTP_CODEC_ATRAC_FAMILY: 976 codec_info_len = 7; 977 (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); 978 avdtp_config_atrac_set_sampling_frequency(connection->a2dp_source_local_stream_endpoint->media_codec_info, sampling_frequency); 979 break; 980 default: 981 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 982 } 983 984 avdtp_capabilities_t new_configuration; 985 new_configuration.media_codec.media_type = AVDTP_AUDIO; 986 new_configuration.media_codec.media_codec_type = codec_type; 987 new_configuration.media_codec.media_codec_information_len = codec_info_len; 988 new_configuration.media_codec.media_codec_information = connection->a2dp_source_local_stream_endpoint->media_codec_info; 989 990 // start reconfigure 991 connection->a2dp_source_state = A2DP_W2_RECONFIGURE_WITH_SEID; 992 993 return avdtp_source_reconfigure( 994 avdtp_cid, 995 avdtp_stream_endpoint_seid(connection->a2dp_source_local_stream_endpoint), 996 connection->a2dp_source_local_stream_endpoint->remote_sep.seid, 997 1 << AVDTP_MEDIA_CODEC, 998 new_configuration 999 ); 1000 } 1001 1002 static uint8_t a2dp_source_media_config_validator_callback(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size){ 1003 uint8_t error = 0; 1004 if (a2dp_source_media_config_validator != NULL) { 1005 // update subevent id and call validator 1006 uint8_t avdtp_subevent_id = event[2]; 1007 uint8_t a2dp_subevent_id = a2dp_subevent_id_for_avdtp_subevent_id(avdtp_subevent_id); 1008 uint8_t * subevent_field = (uint8_t *) &event[2]; 1009 *subevent_field = a2dp_subevent_id; 1010 error = (*a2dp_source_media_config_validator)(stream_endpoint, event, size); 1011 *subevent_field = avdtp_subevent_id; 1012 } 1013 return error; 1014 } 1015 1016 void a2dp_source_register_media_config_validator(uint8_t (*callback)(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size)){ 1017 a2dp_source_media_config_validator = callback; 1018 avdtp_source_register_media_config_validator(&a2dp_source_media_config_validator_callback); 1019 } 1020 1021