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_config_process.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_config_process.state = A2DP_DISCOVER_SEPS; 143 connection->a2dp_source_config_process.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_config_process.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_config_process.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_config_process.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_config_process.local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 190 // bail out if local seid invalid 191 if (!avdtp_connection->a2dp_source_config_process.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_config_process.stream_endpoint_configured = true; 200 201 switch (avdtp_connection->a2dp_source_config_process.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_config_process.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_config_process.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_config_process.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", 223 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), remote_seid); 224 connection->a2dp_source_config_process.state = A2DP_W4_SET_CONFIGURATION; 225 avdtp_source_set_configuration(connection->avdtp_cid, 226 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 227 remote_seid, 228 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration_bitmap, 229 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration); 230 } 231 232 static void a2dp_source_handle_media_capability(uint16_t cid, uint8_t a2dp_subevent_id, uint8_t *packet, uint16_t size){ 233 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(cid); 234 btstack_assert(connection != NULL); 235 if (connection->a2dp_source_config_process.state != A2DP_GET_CAPABILITIES) return; 236 a2dp_replace_subevent_id_and_emit_source(packet, size, a2dp_subevent_id); 237 } 238 239 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 240 UNUSED(channel); 241 UNUSED(size); 242 243 uint16_t cid; 244 avdtp_connection_t * connection; 245 246 uint8_t signal_identifier; 247 uint8_t status; 248 uint8_t local_seid; 249 uint8_t remote_seid; 250 251 if (packet_type != HCI_EVENT_PACKET) return; 252 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 253 254 switch (packet[2]){ 255 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 256 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 257 connection = avdtp_get_connection_for_avdtp_cid(cid); 258 btstack_assert(connection != NULL); 259 260 status = avdtp_subevent_signaling_connection_established_get_status(packet); 261 if (status != ERROR_CODE_SUCCESS){ 262 // notify about connection error only if we're initiator 263 if (connection->a2dp_source_config_process.outgoing_active){ 264 log_info("A2DP source signaling connection failed status 0x%02x", status); 265 connection->a2dp_source_config_process.outgoing_active = false; 266 a2dp_replace_subevent_id_and_emit_source(packet, size, 267 A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 268 } 269 break; 270 } 271 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 272 connection->a2dp_source_config_process.state = A2DP_CONNECTED; 273 274 // notify app 275 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 276 277 // Windows 10 as Source starts SEP discovery after 1500 ms, but only if it did not get a Discover command 278 // If BTstack is configured for both roles, we need to avoid sending Discover command in Source Role for outgoing Sink connections 279 280 // For this, we trigger SDP query only if: 281 // a) this is an outgoing source connection 282 // b) this connection wasn't caused by an outgoing sink request 283 if (connection->a2dp_source_config_process.outgoing_active || !connection->a2dp_sink_config_process.outgoing_active){ 284 a2dp_source_ready_for_sep_discovery(connection); 285 } 286 break; 287 288 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 289 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 290 connection = avdtp_get_connection_for_avdtp_cid(cid); 291 btstack_assert(connection != NULL); 292 293 if (connection->a2dp_source_config_process.state == A2DP_DISCOVER_SEPS) { 294 avdtp_sep_t sep; 295 memset(&sep, 0, sizeof(avdtp_sep_t)); 296 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 297 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 298 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 299 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 300 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 301 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 302 a2dp_source_sep_discovery_count); 303 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 304 a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_count++] = sep; 305 } 306 } 307 break; 308 309 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 310 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 311 connection = avdtp_get_connection_for_avdtp_cid(cid); 312 btstack_assert(connection != NULL); 313 314 if (connection->a2dp_source_config_process.state != A2DP_DISCOVER_SEPS) break; 315 316 if (a2dp_source_sep_discovery_count > 0){ 317 connection->a2dp_source_config_process.state = A2DP_GET_CAPABILITIES; 318 a2dp_source_sep_discovery_index = 0; 319 connection->a2dp_source_config_process.have_config = false; 320 } else { 321 if (connection->a2dp_source_config_process.outgoing_active){ 322 connection->a2dp_source_config_process.outgoing_active = false; 323 connection = avdtp_get_connection_for_avdtp_cid(cid); 324 btstack_assert(connection != NULL); 325 a2dp_emit_source_streaming_connection_failed(connection, 326 ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 327 } 328 329 // continue 330 connection->a2dp_source_config_process.state = A2DP_CONNECTED; 331 a2dp_source_sep_discovery_cid = 0; 332 a2dp_discover_seps_with_next_waiting_connection(); 333 } 334 break; 335 336 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 337 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 338 connection = avdtp_get_connection_for_avdtp_cid(cid); 339 btstack_assert(connection != NULL); 340 341 if (connection->a2dp_source_config_process.state != A2DP_GET_CAPABILITIES) break; 342 343 // forward codec capability 344 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 345 346 #ifndef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 347 // select SEP if none configured yet 348 if (connection->a2dp_source_config_process.have_config == false){ 349 // find SBC stream endpoint 350 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 351 if (stream_endpoint != NULL){ 352 // choose SBC config params 353 avdtp_configuration_sbc_t configuration; 354 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 355 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 356 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 357 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 358 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 359 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 360 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 361 362 // and pre-select this endpoint 363 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 364 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 365 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 366 } 367 } 368 #endif 369 break; 370 371 // forward codec capability 372 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 373 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 374 a2dp_source_handle_media_capability(cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY, packet, size); 375 break; 376 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 377 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 378 a2dp_source_handle_media_capability(cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY, packet, size); 379 break; 380 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 381 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 382 a2dp_source_handle_media_capability(cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY, packet, size); 383 break; 384 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 385 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 386 a2dp_source_handle_media_capability(cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY, packet, size); 387 break; 388 389 // not forwarded 390 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 391 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 392 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 393 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 394 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 395 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 396 break; 397 398 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 399 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 400 connection = avdtp_get_connection_for_avdtp_cid(cid); 401 btstack_assert(connection != NULL); 402 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_config_process.state); 403 404 if (connection->a2dp_source_config_process.state != A2DP_GET_CAPABILITIES) break; 405 406 // store delay reporting capability 407 a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 408 409 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 410 break; 411 412 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 413 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 414 connection = avdtp_get_connection_for_avdtp_cid(cid); 415 btstack_assert(connection != NULL); 416 417 if (connection->a2dp_source_config_process.state != A2DP_GET_CAPABILITIES) break; 418 419 // forward capabilities done for endpoint 420 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 421 422 // endpoint was not suitable, check next one 423 a2dp_source_sep_discovery_index++; 424 if (a2dp_source_sep_discovery_index >= a2dp_source_sep_discovery_count){ 425 426 // emit 'all capabilities for all seps reported' 427 uint8_t event[6]; 428 uint8_t pos = 0; 429 event[pos++] = HCI_EVENT_A2DP_META; 430 event[pos++] = sizeof(event) - 2; 431 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 432 little_endian_store_16(event, pos, cid); 433 a2dp_emit_source(event, sizeof(event)); 434 435 // do we have a valid config? 436 if (connection->a2dp_source_config_process.have_config){ 437 connection->a2dp_source_config_process.state = A2DP_SET_CONFIGURATION; 438 connection->a2dp_source_config_process.have_config = false; 439 break; 440 } 441 442 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 443 connection->a2dp_source_state = A2DP_DISCOVERY_DONE; 444 // TODO call a2dp_discover_seps_with_next_waiting_connection? 445 break; 446 #else 447 // we didn't find a suitable SBC stream endpoint, sorry. 448 if (connection->a2dp_source_config_process.outgoing_active){ 449 connection->a2dp_source_config_process.outgoing_active = false; 450 connection = avdtp_get_connection_for_avdtp_cid(cid); 451 btstack_assert(connection != NULL); 452 a2dp_emit_source_streaming_connection_failed(connection, 453 ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 454 } 455 connection->a2dp_source_config_process.state = A2DP_CONNECTED; 456 a2dp_source_sep_discovery_cid = 0; 457 a2dp_discover_seps_with_next_waiting_connection(); 458 #endif 459 } 460 break; 461 462 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 463 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 464 connection = avdtp_get_connection_for_avdtp_cid(cid); 465 btstack_assert(connection != NULL); 466 467 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 468 break; 469 470 // forward codec configuration 471 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 472 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 473 a2dp_handle_received_configuration(packet, local_seid); 474 a2dp_replace_subevent_id_and_emit_source(packet, size, 475 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 476 break; 477 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 478 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_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_MPEG_AUDIO_CONFIGURATION); 482 break; 483 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 484 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_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_AAC_CONFIGURATION); 488 break; 489 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 490 local_seid = avdtp_subevent_signaling_media_codec_atrac_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_ATRAC_CONFIGURATION); 494 break; 495 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 496 local_seid = avdtp_subevent_signaling_media_codec_sbc_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_OTHER_CONFIGURATION); 500 break; 501 502 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 503 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 504 break; 505 506 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 507 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 508 connection = avdtp_get_connection_for_avdtp_cid(cid); 509 btstack_assert(connection != NULL); 510 511 if (connection->a2dp_source_config_process.state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 512 513 connection->a2dp_source_config_process.outgoing_active = false; 514 status = avdtp_subevent_streaming_connection_established_get_status(packet); 515 if (status != ERROR_CODE_SUCCESS){ 516 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 517 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 518 break; 519 } 520 521 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 522 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 523 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 524 connection->a2dp_source_config_process.state = A2DP_STREAMING_OPENED; 525 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 526 break; 527 528 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 529 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 530 connection = avdtp_get_connection_for_avdtp_cid(cid); 531 btstack_assert(connection != NULL); 532 533 // restart set config timer while remote is active for current cid 534 if (a2dp_source_set_config_timer_active && 535 (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && 536 (cid == a2dp_source_sep_discovery_cid)){ 537 538 a2dp_source_set_config_timer_restart(); 539 break; 540 } 541 542 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 543 544 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_config_process.state, cid); 545 546 switch (connection->a2dp_source_config_process.state){ 547 case A2DP_GET_CAPABILITIES: 548 remote_seid = a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].seid; 549 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 550 avdtp_source_get_all_capabilities(cid, remote_seid); 551 return; 552 553 case A2DP_SET_CONFIGURATION: 554 a2dp_source_set_config(connection); 555 return; 556 557 case A2DP_W2_OPEN_STREAM_WITH_SEID: 558 log_info("A2DP open stream ... local seid 0x%02x, active remote seid 0x%02x", 559 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 560 connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid); 561 connection->a2dp_source_config_process.state = A2DP_W4_OPEN_STREAM_WITH_SEID; 562 avdtp_source_open_stream(cid, 563 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 564 connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid); 565 break; 566 567 case A2DP_W2_RECONFIGURE_WITH_SEID: 568 log_info("A2DP reconfigured ... local seid 0x%02x, active remote seid 0x%02x", 569 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 570 connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid); 571 a2dp_emit_source_stream_reconfigured(cid, avdtp_stream_endpoint_seid( 572 connection->a2dp_source_config_process.local_stream_endpoint), ERROR_CODE_SUCCESS); 573 connection->a2dp_source_config_process.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_config_process.local_stream_endpoint), 580 A2DP_SUBEVENT_STREAM_STARTED); 581 break; 582 case AVDTP_SI_SUSPEND: 583 a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 584 A2DP_SUBEVENT_STREAM_SUSPENDED); 585 break; 586 case AVDTP_SI_ABORT: 587 case AVDTP_SI_CLOSE: 588 a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 589 A2DP_SUBEVENT_STREAM_STOPPED); 590 break; 591 default: 592 break; 593 } 594 break; 595 596 default: 597 break; 598 } 599 break; 600 601 case AVDTP_SUBEVENT_SIGNALING_REJECT: 602 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 603 connection = avdtp_get_connection_for_avdtp_cid(cid); 604 btstack_assert(connection != NULL); 605 606 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 607 608 switch (connection->a2dp_source_config_process.state) { 609 case A2DP_W2_RECONFIGURE_WITH_SEID: 610 log_info("A2DP reconfigure failed ... local seid 0x%02x, active remote seid 0x%02x", 611 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 612 connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid); 613 a2dp_emit_source_stream_reconfigured(cid, avdtp_stream_endpoint_seid( 614 connection->a2dp_source_config_process.local_stream_endpoint), ERROR_CODE_UNSPECIFIED_ERROR); 615 connection->a2dp_source_config_process.state = A2DP_STREAMING_OPENED; 616 break; 617 default: 618 connection->a2dp_source_config_process.state = A2DP_CONNECTED; 619 break; 620 } 621 622 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 623 break; 624 625 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 626 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 627 connection = avdtp_get_connection_for_avdtp_cid(cid); 628 btstack_assert(connection != NULL); 629 630 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 631 632 connection->a2dp_source_config_process.state = A2DP_CONNECTED; 633 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 634 break; 635 636 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 637 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 638 connection = avdtp_get_connection_for_avdtp_cid(cid); 639 btstack_assert(connection != NULL); 640 641 connection->a2dp_source_config_process.state = A2DP_CONFIGURED; 642 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 643 break; 644 645 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 646 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 647 connection = avdtp_get_connection_for_avdtp_cid(cid); 648 btstack_assert(connection != NULL); 649 650 // connect/release are passed on to app 651 if (a2dp_source_sep_discovery_cid == cid){ 652 a2dp_source_set_config_timer_stop(); 653 connection->a2dp_source_config_process.stream_endpoint_configured = false; 654 connection->a2dp_source_config_process.local_stream_endpoint = NULL; 655 656 connection->a2dp_source_config_process.state = A2DP_IDLE; 657 a2dp_source_sep_discovery_cid = 0; 658 } 659 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 660 break; 661 662 default: 663 break; 664 } 665 } 666 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 667 btstack_assert(callback != NULL); 668 669 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 670 a2dp_register_source_packet_handler(callback); 671 } 672 673 void a2dp_source_init(void){ 674 a2dp_init(); 675 avdtp_source_init(); 676 } 677 678 void a2dp_source_deinit(void){ 679 a2dp_deinit(); 680 avdtp_source_deinit(); 681 a2dp_source_media_config_validator = NULL; 682 a2dp_source_sep_discovery_cid = 0; 683 } 684 685 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 686 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 687 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 688 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 689 if (!stream_endpoint){ 690 return NULL; 691 } 692 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 693 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 694 codec_capabilities, codec_capabilities_len); 695 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 696 697 // store user codec configuration buffer 698 stream_endpoint->media_codec_type = media_codec_type; 699 stream_endpoint->media_codec_configuration_info = codec_configuration; 700 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 701 702 return stream_endpoint; 703 } 704 705 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 706 avdtp_source_finalize_stream_endpoint(stream_endpoint); 707 } 708 709 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 710 711 uint16_t outgoing_cid; 712 713 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 714 if (connection == NULL){ 715 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 716 if (status != ERROR_CODE_SUCCESS) { 717 // if there's already a connection for for remote addr, avdtp_source_connect fails, 718 // but the stream will get set-up nevertheless 719 return status; 720 } 721 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 722 btstack_assert(connection != NULL); 723 724 // setup state 725 connection->a2dp_source_config_process.outgoing_active = true; 726 connection->a2dp_source_config_process.state = A2DP_W4_CONNECTED; 727 *avdtp_cid = outgoing_cid; 728 729 } else { 730 if (connection->a2dp_source_config_process.outgoing_active || connection->a2dp_source_config_process.stream_endpoint_configured) { 731 return ERROR_CODE_COMMAND_DISALLOWED; 732 } 733 734 // check state 735 switch (connection->a2dp_source_config_process.state){ 736 case A2DP_IDLE: 737 case A2DP_CONNECTED: 738 // restart process e.g. if there no suitable stream endpoints or they had been in use 739 connection->a2dp_source_config_process.outgoing_active = true; 740 *avdtp_cid = connection->avdtp_cid; 741 a2dp_source_ready_for_sep_discovery(connection); 742 break; 743 default: 744 return ERROR_CODE_COMMAND_DISALLOWED; 745 } 746 } 747 return ERROR_CODE_SUCCESS; 748 } 749 750 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 751 return avdtp_disconnect(avdtp_cid); 752 } 753 754 755 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 756 return avdtp_start_stream(avdtp_cid, local_seid); 757 } 758 759 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 760 return avdtp_suspend_stream(avdtp_cid, local_seid); 761 } 762 763 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 764 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 765 } 766 767 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 768 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 769 } 770 771 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){ 772 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 773 } 774 775 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){ 776 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 777 } 778 779 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 780 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 781 } 782 783 static uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 784 avdtp_media_codec_type_t codec_type) { 785 786 // check state 787 switch (connection->a2dp_source_config_process.state){ 788 case A2DP_DISCOVERY_DONE: 789 case A2DP_GET_CAPABILITIES: 790 break; 791 default: 792 return ERROR_CODE_COMMAND_DISALLOWED; 793 } 794 795 // lookup local stream endpoint 796 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 797 if (stream_endpoint == NULL){ 798 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 799 } 800 801 // lookup remote stream endpoint 802 avdtp_sep_t * remote_sep = NULL; 803 uint8_t i; 804 for (i=0; i < a2dp_source_sep_discovery_count; i++){ 805 if (a2dp_source_sep_discovery_seps[i].seid == remote_seid){ 806 remote_sep = &a2dp_source_sep_discovery_seps[i]; 807 } 808 } 809 if (remote_sep == NULL){ 810 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 811 } 812 813 // set media configuration 814 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 815 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 816 stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 817 // remote seid to use 818 stream_endpoint->set_config_remote_seid = remote_seid; 819 // enable delay reporting if supported 820 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 821 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 822 } 823 824 // suitable Sink stream endpoint found, configure it 825 connection->a2dp_source_config_process.local_stream_endpoint = stream_endpoint; 826 connection->a2dp_source_config_process.have_config = true; 827 828 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 829 // continue outgoing configuration 830 if (connection->a2dp_source_state == A2DP_DISCOVERY_DONE){ 831 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 832 } 833 #endif 834 835 return ERROR_CODE_SUCCESS; 836 } 837 838 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){ 839 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 840 if (connection == NULL){ 841 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 842 } 843 844 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 845 if (status != 0) { 846 return status; 847 } 848 // set config in reserved buffer 849 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info; 850 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 851 avdtp_config_sbc_store(connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 852 853 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 854 a2dp_source_set_config(connection); 855 #endif 856 857 return ERROR_CODE_SUCCESS; 858 } 859 860 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){ 861 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 862 if (connection == NULL){ 863 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 864 } 865 866 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 867 if (status != 0) { 868 return status; 869 } 870 871 // set config in reserved buffer 872 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *)connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info; 873 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 874 avdtp_config_mpeg_audio_store(connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 875 876 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 877 a2dp_source_set_config(connection); 878 #endif 879 880 return ERROR_CODE_SUCCESS; 881 } 882 883 uint8_t a2dp_source_set_config_mpeg_aac(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, const avdtp_configuration_mpeg_aac_t * configuration){ 884 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 885 if (connection == NULL){ 886 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 887 } 888 889 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 890 if (status != 0) { 891 return status; 892 } 893 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info; 894 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 895 avdtp_config_mpeg_aac_store(connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 896 897 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 898 a2dp_source_set_config(connection); 899 #endif 900 901 return ERROR_CODE_SUCCESS; 902 } 903 904 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){ 905 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 906 if (connection == NULL){ 907 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 908 } 909 910 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 911 if (status != 0) { 912 return status; 913 } 914 915 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info; 916 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 917 avdtp_config_atrac_store(connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 918 919 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 920 a2dp_source_set_config(connection); 921 #endif 922 923 return ERROR_CODE_SUCCESS; 924 } 925 926 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 927 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 928 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 929 if (connection == NULL){ 930 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 931 } 932 933 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 934 if (status != 0) { 935 return status; 936 } 937 938 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 939 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 940 941 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 942 a2dp_source_set_config(connection); 943 #endif 944 945 return status; 946 } 947 948 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 949 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 950 if (connection == NULL){ 951 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 952 } 953 954 if (connection->a2dp_source_config_process.state != A2DP_STREAMING_OPENED) { 955 return ERROR_CODE_COMMAND_DISALLOWED; 956 } 957 958 btstack_assert(connection->a2dp_source_config_process.local_stream_endpoint != NULL); 959 960 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 961 962 avdtp_media_codec_type_t codec_type = connection->a2dp_source_config_process.local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 963 uint8_t codec_info_len; 964 switch (codec_type){ 965 case AVDTP_CODEC_SBC: 966 codec_info_len = 4; 967 (void)memcpy(connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info, connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 968 avdtp_config_sbc_set_sampling_frequency(connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info, sampling_frequency); 969 break; 970 case AVDTP_CODEC_MPEG_1_2_AUDIO: 971 codec_info_len = 4; 972 (void)memcpy(connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info, connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 973 avdtp_config_mpeg_audio_set_sampling_frequency(connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info, sampling_frequency); 974 break; 975 case AVDTP_CODEC_MPEG_2_4_AAC: 976 codec_info_len = 6; 977 (void)memcpy(connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info, connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 978 avdtp_config_mpeg_aac_set_sampling_frequency(connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info, sampling_frequency); 979 break; 980 case AVDTP_CODEC_ATRAC_FAMILY: 981 codec_info_len = 7; 982 (void)memcpy(connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info, connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.configuration.media_codec.media_codec_information, codec_info_len); 983 avdtp_config_atrac_set_sampling_frequency(connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info, sampling_frequency); 984 break; 985 default: 986 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 987 } 988 989 avdtp_capabilities_t new_configuration; 990 new_configuration.media_codec.media_type = AVDTP_AUDIO; 991 new_configuration.media_codec.media_codec_type = codec_type; 992 new_configuration.media_codec.media_codec_information_len = codec_info_len; 993 new_configuration.media_codec.media_codec_information = connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info; 994 995 // start reconfigure 996 connection->a2dp_source_config_process.state = A2DP_W2_RECONFIGURE_WITH_SEID; 997 998 return avdtp_source_reconfigure( 999 avdtp_cid, 1000 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 1001 connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid, 1002 1 << AVDTP_MEDIA_CODEC, 1003 new_configuration 1004 ); 1005 } 1006 1007 static uint8_t a2dp_source_media_config_validator_callback(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size){ 1008 uint8_t error = 0; 1009 if (a2dp_source_media_config_validator != NULL) { 1010 // update subevent id and call validator 1011 uint8_t avdtp_subevent_id = event[2]; 1012 uint8_t a2dp_subevent_id = a2dp_subevent_id_for_avdtp_subevent_id(avdtp_subevent_id); 1013 uint8_t * subevent_field = (uint8_t *) &event[2]; 1014 *subevent_field = a2dp_subevent_id; 1015 error = (*a2dp_source_media_config_validator)(stream_endpoint, event, size); 1016 *subevent_field = avdtp_subevent_id; 1017 } 1018 return error; 1019 } 1020 1021 void a2dp_source_register_media_config_validator(uint8_t (*callback)(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size)){ 1022 a2dp_source_media_config_validator = callback; 1023 avdtp_source_register_media_config_validator(&a2dp_source_media_config_validator_callback); 1024 } 1025 1026