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_config_process_avdtp_event_handler(uint8_t *packet, uint16_t size) { 240 uint16_t cid; 241 avdtp_connection_t * connection; 242 } 243 244 static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 245 UNUSED(channel); 246 UNUSED(size); 247 248 uint16_t cid; 249 avdtp_connection_t * connection; 250 251 uint8_t signal_identifier; 252 uint8_t status; 253 uint8_t local_seid; 254 uint8_t remote_seid; 255 256 if (packet_type != HCI_EVENT_PACKET) return; 257 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVDTP_META) return; 258 259 switch (packet[2]){ 260 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED: 261 cid = avdtp_subevent_signaling_connection_established_get_avdtp_cid(packet); 262 connection = avdtp_get_connection_for_avdtp_cid(cid); 263 btstack_assert(connection != NULL); 264 265 status = avdtp_subevent_signaling_connection_established_get_status(packet); 266 if (status != ERROR_CODE_SUCCESS){ 267 // notify about connection error only if we're initiator 268 if (connection->a2dp_source_config_process.outgoing_active){ 269 log_info("A2DP source signaling connection failed status 0x%02x", status); 270 connection->a2dp_source_config_process.outgoing_active = false; 271 a2dp_replace_subevent_id_and_emit_source(packet, size, 272 A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 273 } 274 break; 275 } 276 log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid); 277 connection->a2dp_source_config_process.state = A2DP_CONNECTED; 278 279 // notify app 280 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED); 281 282 // Windows 10 as Source starts SEP discovery after 1500 ms, but only if it did not get a Discover command 283 // If BTstack is configured for both roles, we need to avoid sending Discover command in Source Role for outgoing Sink connections 284 285 // For this, we trigger SDP query only if: 286 // a) this is an outgoing source connection 287 // b) this connection wasn't caused by an outgoing sink request 288 if (connection->a2dp_source_config_process.outgoing_active || !connection->a2dp_sink_config_process.outgoing_active){ 289 a2dp_source_ready_for_sep_discovery(connection); 290 } 291 break; 292 293 case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND: 294 cid = avdtp_subevent_signaling_sep_found_get_avdtp_cid(packet); 295 connection = avdtp_get_connection_for_avdtp_cid(cid); 296 btstack_assert(connection != NULL); 297 298 if (connection->a2dp_source_config_process.state == A2DP_DISCOVER_SEPS) { 299 avdtp_sep_t sep; 300 memset(&sep, 0, sizeof(avdtp_sep_t)); 301 sep.seid = avdtp_subevent_signaling_sep_found_get_remote_seid(packet);; 302 sep.in_use = avdtp_subevent_signaling_sep_found_get_in_use(packet); 303 sep.media_type = (avdtp_media_type_t) avdtp_subevent_signaling_sep_found_get_media_type(packet); 304 sep.type = (avdtp_sep_type_t) avdtp_subevent_signaling_sep_found_get_sep_type(packet); 305 log_info("A2DP Found sep: remote seid 0x%02x, in_use %d, media type %d, sep type %s, index %d", 306 sep.seid, sep.in_use, sep.media_type, sep.type == AVDTP_SOURCE ? "source" : "sink", 307 a2dp_source_sep_discovery_count); 308 if ((sep.type == AVDTP_SINK) && (sep.in_use == false)) { 309 a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_count++] = sep; 310 } 311 } 312 break; 313 314 case AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE: 315 cid = avdtp_subevent_signaling_sep_dicovery_done_get_avdtp_cid(packet); 316 connection = avdtp_get_connection_for_avdtp_cid(cid); 317 btstack_assert(connection != NULL); 318 319 if (connection->a2dp_source_config_process.state != A2DP_DISCOVER_SEPS) break; 320 321 if (a2dp_source_sep_discovery_count > 0){ 322 connection->a2dp_source_config_process.state = A2DP_GET_CAPABILITIES; 323 a2dp_source_sep_discovery_index = 0; 324 connection->a2dp_source_config_process.have_config = false; 325 } else { 326 if (connection->a2dp_source_config_process.outgoing_active){ 327 connection->a2dp_source_config_process.outgoing_active = false; 328 connection = avdtp_get_connection_for_avdtp_cid(cid); 329 btstack_assert(connection != NULL); 330 a2dp_emit_source_streaming_connection_failed(connection, 331 ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 332 } 333 334 // continue 335 connection->a2dp_source_config_process.state = A2DP_CONNECTED; 336 a2dp_source_sep_discovery_cid = 0; 337 a2dp_discover_seps_with_next_waiting_connection(); 338 } 339 break; 340 341 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY: 342 cid = avdtp_subevent_signaling_media_codec_sbc_capability_get_avdtp_cid(packet); 343 connection = avdtp_get_connection_for_avdtp_cid(cid); 344 btstack_assert(connection != NULL); 345 346 if (connection->a2dp_source_config_process.state != A2DP_GET_CAPABILITIES) break; 347 348 // forward codec capability 349 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY); 350 351 #ifndef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 352 // select SEP if none configured yet 353 if (connection->a2dp_source_config_process.have_config == false){ 354 // find SBC stream endpoint 355 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_source_stream_endpoint_for_media_codec(AVDTP_CODEC_SBC); 356 if (stream_endpoint != NULL){ 357 // choose SBC config params 358 avdtp_configuration_sbc_t configuration; 359 configuration.sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 360 configuration.channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 361 configuration.block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 362 configuration.subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 363 configuration.allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 364 configuration.max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 365 configuration.min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 366 367 // and pre-select this endpoint 368 local_seid = avdtp_stream_endpoint_seid(stream_endpoint); 369 remote_seid = avdtp_subevent_signaling_media_codec_sbc_capability_get_remote_seid(packet); 370 a2dp_source_set_config_sbc(cid, local_seid, remote_seid, &configuration); 371 } 372 } 373 #endif 374 break; 375 376 // forward codec capability 377 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY: 378 cid = avdtp_subevent_signaling_media_codec_mpeg_audio_capability_get_avdtp_cid(packet); 379 a2dp_source_handle_media_capability(cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CAPABILITY, packet, size); 380 break; 381 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY: 382 cid = avdtp_subevent_signaling_media_codec_mpeg_aac_capability_get_avdtp_cid(packet); 383 a2dp_source_handle_media_capability(cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CAPABILITY, packet, size); 384 break; 385 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY: 386 cid = avdtp_subevent_signaling_media_codec_atrac_capability_get_avdtp_cid(packet); 387 a2dp_source_handle_media_capability(cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CAPABILITY, packet, size); 388 break; 389 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY: 390 cid = avdtp_subevent_signaling_media_codec_other_capability_get_avdtp_cid(packet); 391 a2dp_source_handle_media_capability(cid, A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY, packet, size); 392 break; 393 394 // not forwarded 395 case AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY: 396 case AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY: 397 case AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY: 398 case AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY: 399 case AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY: 400 case AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY: 401 break; 402 403 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY: 404 cid = avdtp_subevent_signaling_delay_reporting_capability_get_avdtp_cid(packet); 405 connection = avdtp_get_connection_for_avdtp_cid(cid); 406 btstack_assert(connection != NULL); 407 log_info("received AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, cid 0x%02x, state %d", cid, connection->a2dp_source_config_process.state); 408 409 if (connection->a2dp_source_config_process.state != A2DP_GET_CAPABILITIES) break; 410 411 // store delay reporting capability 412 a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].registered_service_categories |= 1 << AVDTP_DELAY_REPORTING; 413 414 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY); 415 break; 416 417 case AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE: 418 cid = avdtp_subevent_signaling_capabilities_done_get_avdtp_cid(packet); 419 connection = avdtp_get_connection_for_avdtp_cid(cid); 420 btstack_assert(connection != NULL); 421 422 if (connection->a2dp_source_config_process.state != A2DP_GET_CAPABILITIES) break; 423 424 // forward capabilities done for endpoint 425 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE); 426 427 // endpoint was not suitable, check next one 428 a2dp_source_sep_discovery_index++; 429 if (a2dp_source_sep_discovery_index >= a2dp_source_sep_discovery_count){ 430 431 // emit 'all capabilities for all seps reported' 432 uint8_t event[6]; 433 uint8_t pos = 0; 434 event[pos++] = HCI_EVENT_A2DP_META; 435 event[pos++] = sizeof(event) - 2; 436 event[pos++] = A2DP_SUBEVENT_SIGNALING_CAPABILITIES_COMPLETE; 437 little_endian_store_16(event, pos, cid); 438 a2dp_emit_source(event, sizeof(event)); 439 440 // do we have a valid config? 441 if (connection->a2dp_source_config_process.have_config){ 442 connection->a2dp_source_config_process.state = A2DP_SET_CONFIGURATION; 443 connection->a2dp_source_config_process.have_config = false; 444 break; 445 } 446 447 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 448 connection->a2dp_source_state = A2DP_DISCOVERY_DONE; 449 // TODO call a2dp_discover_seps_with_next_waiting_connection? 450 break; 451 #else 452 // we didn't find a suitable SBC stream endpoint, sorry. 453 if (connection->a2dp_source_config_process.outgoing_active){ 454 connection->a2dp_source_config_process.outgoing_active = false; 455 connection = avdtp_get_connection_for_avdtp_cid(cid); 456 btstack_assert(connection != NULL); 457 a2dp_emit_source_streaming_connection_failed(connection, 458 ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND); 459 } 460 connection->a2dp_source_config_process.state = A2DP_CONNECTED; 461 a2dp_source_sep_discovery_cid = 0; 462 a2dp_discover_seps_with_next_waiting_connection(); 463 #endif 464 } 465 break; 466 467 case AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT: 468 cid = avdtp_subevent_signaling_delay_report_get_avdtp_cid(packet); 469 connection = avdtp_get_connection_for_avdtp_cid(cid); 470 btstack_assert(connection != NULL); 471 472 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_DELAY_REPORT); 473 break; 474 475 // forward codec configuration 476 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: 477 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 478 a2dp_handle_received_configuration(packet, local_seid); 479 a2dp_replace_subevent_id_and_emit_source(packet, size, 480 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION); 481 break; 482 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION: 483 local_seid = avdtp_subevent_signaling_media_codec_mpeg_audio_configuration_get_local_seid(packet); 484 a2dp_handle_received_configuration(packet, local_seid); 485 a2dp_replace_subevent_id_and_emit_source(packet, size, 486 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AUDIO_CONFIGURATION); 487 break; 488 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION: 489 local_seid = avdtp_subevent_signaling_media_codec_mpeg_aac_configuration_get_local_seid(packet); 490 a2dp_handle_received_configuration(packet, local_seid); 491 a2dp_replace_subevent_id_and_emit_source(packet, size, 492 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_MPEG_AAC_CONFIGURATION); 493 break; 494 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION: 495 local_seid = avdtp_subevent_signaling_media_codec_atrac_configuration_get_local_seid(packet); 496 a2dp_handle_received_configuration(packet, local_seid); 497 a2dp_replace_subevent_id_and_emit_source(packet, size, 498 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_ATRAC_CONFIGURATION); 499 break; 500 case AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 501 local_seid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_local_seid(packet); 502 a2dp_handle_received_configuration(packet, local_seid); 503 a2dp_replace_subevent_id_and_emit_source(packet, size, 504 A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION); 505 break; 506 507 case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: 508 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW); 509 break; 510 511 case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED: 512 cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet); 513 connection = avdtp_get_connection_for_avdtp_cid(cid); 514 btstack_assert(connection != NULL); 515 516 if (connection->a2dp_source_config_process.state != A2DP_W4_OPEN_STREAM_WITH_SEID) break; 517 518 connection->a2dp_source_config_process.outgoing_active = false; 519 status = avdtp_subevent_streaming_connection_established_get_status(packet); 520 if (status != ERROR_CODE_SUCCESS){ 521 log_info("A2DP source streaming connection could not be established, avdtp_cid 0x%02x, status 0x%02x ---", cid, status); 522 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 523 break; 524 } 525 526 log_info("A2DP source streaming connection established --- avdtp_cid 0x%02x, local seid 0x%02x, remote seid 0x%02x", cid, 527 avdtp_subevent_streaming_connection_established_get_local_seid(packet), 528 avdtp_subevent_streaming_connection_established_get_remote_seid(packet)); 529 connection->a2dp_source_config_process.state = A2DP_STREAMING_OPENED; 530 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAM_ESTABLISHED); 531 break; 532 533 case AVDTP_SUBEVENT_SIGNALING_ACCEPT: 534 cid = avdtp_subevent_signaling_accept_get_avdtp_cid(packet); 535 connection = avdtp_get_connection_for_avdtp_cid(cid); 536 btstack_assert(connection != NULL); 537 538 // restart set config timer while remote is active for current cid 539 if (a2dp_source_set_config_timer_active && 540 (avdtp_subevent_signaling_accept_get_is_initiator(packet) == 0) && 541 (cid == a2dp_source_sep_discovery_cid)){ 542 543 a2dp_source_set_config_timer_restart(); 544 break; 545 } 546 547 signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet); 548 549 log_info("A2DP cmd %s accepted, global state %d, cid 0x%02x", avdtp_si2str(signal_identifier), connection->a2dp_source_config_process.state, cid); 550 551 switch (connection->a2dp_source_config_process.state){ 552 case A2DP_GET_CAPABILITIES: 553 remote_seid = a2dp_source_sep_discovery_seps[a2dp_source_sep_discovery_index].seid; 554 log_info("A2DP get capabilities for remote seid 0x%02x", remote_seid); 555 avdtp_source_get_all_capabilities(cid, remote_seid); 556 return; 557 558 case A2DP_SET_CONFIGURATION: 559 a2dp_source_set_config(connection); 560 return; 561 562 case A2DP_W2_OPEN_STREAM_WITH_SEID: 563 log_info("A2DP open stream ... local seid 0x%02x, active remote seid 0x%02x", 564 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 565 connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid); 566 connection->a2dp_source_config_process.state = A2DP_W4_OPEN_STREAM_WITH_SEID; 567 avdtp_source_open_stream(cid, 568 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 569 connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid); 570 break; 571 572 case A2DP_W2_RECONFIGURE_WITH_SEID: 573 log_info("A2DP reconfigured ... local seid 0x%02x, active remote seid 0x%02x", 574 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 575 connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid); 576 a2dp_emit_source_stream_reconfigured(cid, avdtp_stream_endpoint_seid( 577 connection->a2dp_source_config_process.local_stream_endpoint), ERROR_CODE_SUCCESS); 578 connection->a2dp_source_config_process.state = A2DP_STREAMING_OPENED; 579 break; 580 581 case A2DP_STREAMING_OPENED: 582 switch (signal_identifier){ 583 case AVDTP_SI_START: 584 a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 585 A2DP_SUBEVENT_STREAM_STARTED); 586 break; 587 case AVDTP_SI_SUSPEND: 588 a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 589 A2DP_SUBEVENT_STREAM_SUSPENDED); 590 break; 591 case AVDTP_SI_ABORT: 592 case AVDTP_SI_CLOSE: 593 a2dp_emit_source_stream_event(cid, avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 594 A2DP_SUBEVENT_STREAM_STOPPED); 595 break; 596 default: 597 break; 598 } 599 break; 600 601 default: 602 break; 603 } 604 break; 605 606 case AVDTP_SUBEVENT_SIGNALING_REJECT: 607 cid = avdtp_subevent_signaling_reject_get_avdtp_cid(packet); 608 connection = avdtp_get_connection_for_avdtp_cid(cid); 609 btstack_assert(connection != NULL); 610 611 if (avdtp_subevent_signaling_reject_get_is_initiator(packet) == 0) break; 612 613 switch (connection->a2dp_source_config_process.state) { 614 case A2DP_W2_RECONFIGURE_WITH_SEID: 615 log_info("A2DP reconfigure failed ... local seid 0x%02x, active remote seid 0x%02x", 616 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 617 connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid); 618 a2dp_emit_source_stream_reconfigured(cid, avdtp_stream_endpoint_seid( 619 connection->a2dp_source_config_process.local_stream_endpoint), ERROR_CODE_UNSPECIFIED_ERROR); 620 connection->a2dp_source_config_process.state = A2DP_STREAMING_OPENED; 621 break; 622 default: 623 connection->a2dp_source_config_process.state = A2DP_CONNECTED; 624 break; 625 } 626 627 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 628 break; 629 630 case AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT: 631 cid = avdtp_subevent_signaling_general_reject_get_avdtp_cid(packet); 632 connection = avdtp_get_connection_for_avdtp_cid(cid); 633 btstack_assert(connection != NULL); 634 635 if (avdtp_subevent_signaling_general_reject_get_is_initiator(packet) == 0) break; 636 637 connection->a2dp_source_config_process.state = A2DP_CONNECTED; 638 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_COMMAND_REJECTED); 639 break; 640 641 case AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED: 642 cid = avdtp_subevent_streaming_connection_released_get_avdtp_cid(packet); 643 connection = avdtp_get_connection_for_avdtp_cid(cid); 644 btstack_assert(connection != NULL); 645 646 connection->a2dp_source_config_process.state = A2DP_CONFIGURED; 647 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_STREAM_RELEASED); 648 break; 649 650 case AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 651 cid = avdtp_subevent_signaling_connection_released_get_avdtp_cid(packet); 652 connection = avdtp_get_connection_for_avdtp_cid(cid); 653 btstack_assert(connection != NULL); 654 655 // connect/release are passed on to app 656 if (a2dp_source_sep_discovery_cid == cid){ 657 a2dp_source_set_config_timer_stop(); 658 connection->a2dp_source_config_process.stream_endpoint_configured = false; 659 connection->a2dp_source_config_process.local_stream_endpoint = NULL; 660 661 connection->a2dp_source_config_process.state = A2DP_IDLE; 662 a2dp_source_sep_discovery_cid = 0; 663 } 664 a2dp_replace_subevent_id_and_emit_source(packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED); 665 break; 666 667 default: 668 break; 669 } 670 671 // forward events to config process 672 a2dp_source_config_process_avdtp_event_handler(packet, size); 673 } 674 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback){ 675 btstack_assert(callback != NULL); 676 677 avdtp_source_register_packet_handler(&a2dp_source_packet_handler_internal); 678 a2dp_register_source_packet_handler(callback); 679 } 680 681 void a2dp_source_init(void){ 682 a2dp_init(); 683 avdtp_source_init(); 684 } 685 686 void a2dp_source_deinit(void){ 687 a2dp_deinit(); 688 avdtp_source_deinit(); 689 a2dp_source_media_config_validator = NULL; 690 a2dp_source_sep_discovery_cid = 0; 691 } 692 693 avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 694 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 695 uint8_t * codec_configuration, uint16_t codec_configuration_len){ 696 avdtp_stream_endpoint_t * stream_endpoint = avdtp_source_create_stream_endpoint(AVDTP_SOURCE, media_type); 697 if (!stream_endpoint){ 698 return NULL; 699 } 700 avdtp_source_register_media_transport_category(avdtp_stream_endpoint_seid(stream_endpoint)); 701 avdtp_source_register_media_codec_category(avdtp_stream_endpoint_seid(stream_endpoint), media_type, media_codec_type, 702 codec_capabilities, codec_capabilities_len); 703 avdtp_source_register_delay_reporting_category(avdtp_stream_endpoint_seid(stream_endpoint)); 704 705 // store user codec configuration buffer 706 stream_endpoint->media_codec_type = media_codec_type; 707 stream_endpoint->media_codec_configuration_info = codec_configuration; 708 stream_endpoint->media_codec_configuration_len = codec_configuration_len; 709 710 return stream_endpoint; 711 } 712 713 void a2dp_source_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 714 avdtp_source_finalize_stream_endpoint(stream_endpoint); 715 } 716 717 uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid) { 718 719 uint16_t outgoing_cid; 720 721 avdtp_connection_t * connection = avdtp_get_connection_for_bd_addr(remote_addr); 722 if (connection == NULL){ 723 uint8_t status = avdtp_source_connect(remote_addr, &outgoing_cid); 724 if (status != ERROR_CODE_SUCCESS) { 725 // if there's already a connection for for remote addr, avdtp_source_connect fails, 726 // but the stream will get set-up nevertheless 727 return status; 728 } 729 connection = avdtp_get_connection_for_avdtp_cid(outgoing_cid); 730 btstack_assert(connection != NULL); 731 732 // setup state 733 connection->a2dp_source_config_process.outgoing_active = true; 734 connection->a2dp_source_config_process.state = A2DP_W4_CONNECTED; 735 *avdtp_cid = outgoing_cid; 736 737 } else { 738 if (connection->a2dp_source_config_process.outgoing_active || connection->a2dp_source_config_process.stream_endpoint_configured) { 739 return ERROR_CODE_COMMAND_DISALLOWED; 740 } 741 742 // check state 743 switch (connection->a2dp_source_config_process.state){ 744 case A2DP_IDLE: 745 case A2DP_CONNECTED: 746 // restart process e.g. if there no suitable stream endpoints or they had been in use 747 connection->a2dp_source_config_process.outgoing_active = true; 748 *avdtp_cid = connection->avdtp_cid; 749 a2dp_source_ready_for_sep_discovery(connection); 750 break; 751 default: 752 return ERROR_CODE_COMMAND_DISALLOWED; 753 } 754 } 755 return ERROR_CODE_SUCCESS; 756 } 757 758 uint8_t a2dp_source_disconnect(uint16_t avdtp_cid){ 759 return avdtp_disconnect(avdtp_cid); 760 } 761 762 763 uint8_t a2dp_source_start_stream(uint16_t avdtp_cid, uint8_t local_seid){ 764 return avdtp_start_stream(avdtp_cid, local_seid); 765 } 766 767 uint8_t a2dp_source_pause_stream(uint16_t avdtp_cid, uint8_t local_seid){ 768 return avdtp_suspend_stream(avdtp_cid, local_seid); 769 } 770 771 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t avdtp_cid, uint8_t local_seid){ 772 avdtp_source_stream_endpoint_request_can_send_now(avdtp_cid, local_seid); 773 } 774 775 int a2dp_max_media_payload_size(uint16_t avdtp_cid, uint8_t local_seid){ 776 return avdtp_max_media_payload_size(avdtp_cid, local_seid); 777 } 778 779 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){ 780 return avdtp_source_stream_send_media_payload(avdtp_cid, local_seid, storage, num_bytes_to_copy, num_frames, marker); 781 } 782 783 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){ 784 return avdtp_source_stream_send_media_payload_rtp(a2dp_cid, local_seid, marker, payload, payload_size); 785 } 786 787 uint8_t a2dp_source_stream_send_media_packet(uint16_t a2dp_cid, uint8_t local_seid, const uint8_t * packet, uint16_t size){ 788 return avdtp_source_stream_send_media_packet(a2dp_cid, local_seid, packet, size); 789 } 790 791 static uint8_t a2dp_source_config_init(avdtp_connection_t *connection, uint8_t local_seid, uint8_t remote_seid, 792 avdtp_media_codec_type_t codec_type) { 793 794 // check state 795 switch (connection->a2dp_source_config_process.state){ 796 case A2DP_DISCOVERY_DONE: 797 case A2DP_GET_CAPABILITIES: 798 break; 799 default: 800 return ERROR_CODE_COMMAND_DISALLOWED; 801 } 802 803 // lookup local stream endpoint 804 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid); 805 if (stream_endpoint == NULL){ 806 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 807 } 808 809 // lookup remote stream endpoint 810 avdtp_sep_t * remote_sep = NULL; 811 uint8_t i; 812 for (i=0; i < a2dp_source_sep_discovery_count; i++){ 813 if (a2dp_source_sep_discovery_seps[i].seid == remote_seid){ 814 remote_sep = &a2dp_source_sep_discovery_seps[i]; 815 } 816 } 817 if (remote_sep == NULL){ 818 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 819 } 820 821 // set media configuration 822 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 823 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 824 stream_endpoint->remote_configuration.media_codec.media_codec_type = codec_type; 825 // remote seid to use 826 stream_endpoint->set_config_remote_seid = remote_seid; 827 // enable delay reporting if supported 828 if (remote_sep->registered_service_categories & (1<<AVDTP_DELAY_REPORTING)){ 829 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_DELAY_REPORTING, 1); 830 } 831 832 // suitable Sink stream endpoint found, configure it 833 connection->a2dp_source_config_process.local_stream_endpoint = stream_endpoint; 834 connection->a2dp_source_config_process.have_config = true; 835 836 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 837 // continue outgoing configuration 838 if (connection->a2dp_source_state == A2DP_DISCOVERY_DONE){ 839 connection->a2dp_source_state = A2DP_SET_CONFIGURATION; 840 } 841 #endif 842 843 return ERROR_CODE_SUCCESS; 844 } 845 846 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){ 847 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 848 if (connection == NULL){ 849 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 850 } 851 852 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_SBC); 853 if (status != 0) { 854 return status; 855 } 856 // set config in reserved buffer 857 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; 858 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 859 avdtp_config_sbc_store(connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 860 861 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 862 a2dp_source_set_config(connection); 863 #endif 864 865 return ERROR_CODE_SUCCESS; 866 } 867 868 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){ 869 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 870 if (connection == NULL){ 871 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 872 } 873 874 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_1_2_AUDIO); 875 if (status != 0) { 876 return status; 877 } 878 879 // set config in reserved buffer 880 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; 881 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 4; 882 avdtp_config_mpeg_audio_store(connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 883 884 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 885 a2dp_source_set_config(connection); 886 #endif 887 888 return ERROR_CODE_SUCCESS; 889 } 890 891 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){ 892 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 893 if (connection == NULL){ 894 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 895 } 896 897 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_MPEG_2_4_AAC); 898 if (status != 0) { 899 return status; 900 } 901 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; 902 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 6; 903 avdtp_config_mpeg_aac_store(connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 904 905 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 906 a2dp_source_set_config(connection); 907 #endif 908 909 return ERROR_CODE_SUCCESS; 910 } 911 912 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){ 913 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 914 if (connection == NULL){ 915 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 916 } 917 918 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_ATRAC_FAMILY); 919 if (status != 0) { 920 return status; 921 } 922 923 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; 924 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = 7; 925 avdtp_config_atrac_store(connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information, configuration); 926 927 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 928 a2dp_source_set_config(connection); 929 #endif 930 931 return ERROR_CODE_SUCCESS; 932 } 933 934 uint8_t a2dp_source_set_config_other(uint16_t a2dp_cid, uint8_t local_seid, uint8_t remote_seid, 935 const uint8_t * media_codec_information, uint8_t media_codec_information_len){ 936 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(a2dp_cid); 937 if (connection == NULL){ 938 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 939 } 940 941 uint8_t status = a2dp_source_config_init(connection, local_seid, remote_seid, AVDTP_CODEC_NON_A2DP); 942 if (status != 0) { 943 return status; 944 } 945 946 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information = (uint8_t *) media_codec_information; 947 connection->a2dp_source_config_process.local_stream_endpoint->remote_configuration.media_codec.media_codec_information_len = media_codec_information_len; 948 949 #ifdef ENABLE_A2DP_SOURCE_EXPLICIT_CONFIG 950 a2dp_source_set_config(connection); 951 #endif 952 953 return status; 954 } 955 956 uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t avdtp_cid, uint32_t sampling_frequency){ 957 avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid); 958 if (connection == NULL){ 959 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 960 } 961 962 if (connection->a2dp_source_config_process.state != A2DP_STREAMING_OPENED) { 963 return ERROR_CODE_COMMAND_DISALLOWED; 964 } 965 966 btstack_assert(connection->a2dp_source_config_process.local_stream_endpoint != NULL); 967 968 log_info("Reconfigure avdtp_cid 0x%02x", avdtp_cid); 969 970 avdtp_media_codec_type_t codec_type = connection->a2dp_source_config_process.local_stream_endpoint->sep.capabilities.media_codec.media_codec_type; 971 uint8_t codec_info_len; 972 switch (codec_type){ 973 case AVDTP_CODEC_SBC: 974 codec_info_len = 4; 975 (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); 976 avdtp_config_sbc_set_sampling_frequency(connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info, sampling_frequency); 977 break; 978 case AVDTP_CODEC_MPEG_1_2_AUDIO: 979 codec_info_len = 4; 980 (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); 981 avdtp_config_mpeg_audio_set_sampling_frequency(connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info, sampling_frequency); 982 break; 983 case AVDTP_CODEC_MPEG_2_4_AAC: 984 codec_info_len = 6; 985 (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); 986 avdtp_config_mpeg_aac_set_sampling_frequency(connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info, sampling_frequency); 987 break; 988 case AVDTP_CODEC_ATRAC_FAMILY: 989 codec_info_len = 7; 990 (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); 991 avdtp_config_atrac_set_sampling_frequency(connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info, sampling_frequency); 992 break; 993 default: 994 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 995 } 996 997 avdtp_capabilities_t new_configuration; 998 new_configuration.media_codec.media_type = AVDTP_AUDIO; 999 new_configuration.media_codec.media_codec_type = codec_type; 1000 new_configuration.media_codec.media_codec_information_len = codec_info_len; 1001 new_configuration.media_codec.media_codec_information = connection->a2dp_source_config_process.local_stream_endpoint->media_codec_info; 1002 1003 // start reconfigure 1004 connection->a2dp_source_config_process.state = A2DP_W2_RECONFIGURE_WITH_SEID; 1005 1006 return avdtp_source_reconfigure( 1007 avdtp_cid, 1008 avdtp_stream_endpoint_seid(connection->a2dp_source_config_process.local_stream_endpoint), 1009 connection->a2dp_source_config_process.local_stream_endpoint->remote_sep.seid, 1010 1 << AVDTP_MEDIA_CODEC, 1011 new_configuration 1012 ); 1013 } 1014 1015 static uint8_t a2dp_source_media_config_validator_callback(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size){ 1016 uint8_t error = 0; 1017 if (a2dp_source_media_config_validator != NULL) { 1018 // update subevent id and call validator 1019 uint8_t avdtp_subevent_id = event[2]; 1020 uint8_t a2dp_subevent_id = a2dp_subevent_id_for_avdtp_subevent_id(avdtp_subevent_id); 1021 uint8_t * subevent_field = (uint8_t *) &event[2]; 1022 *subevent_field = a2dp_subevent_id; 1023 error = (*a2dp_source_media_config_validator)(stream_endpoint, event, size); 1024 *subevent_field = avdtp_subevent_id; 1025 } 1026 return error; 1027 } 1028 1029 void a2dp_source_register_media_config_validator(uint8_t (*callback)(const avdtp_stream_endpoint_t * stream_endpoint, const uint8_t * event, uint16_t size)){ 1030 a2dp_source_media_config_validator = callback; 1031 avdtp_source_register_media_config_validator(&a2dp_source_media_config_validator_callback); 1032 } 1033 1034