1 /* 2 * Copyright (C) 2016 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "avdtp_initiator.c" 39 40 #include <stdint.h> 41 #include <string.h> 42 43 #include "bluetooth_psm.h" 44 #include "bluetooth_sdp.h" 45 #include "btstack_debug.h" 46 #include "btstack_event.h" 47 #include "l2cap.h" 48 #include "classic/avdtp.h" 49 #include "classic/avdtp_util.h" 50 #include "classic/avdtp_initiator.h" 51 52 static int avdtp_initiator_send_signaling_cmd(uint16_t cid, avdtp_signal_identifier_t identifier, uint8_t transaction_label){ 53 uint8_t command[2]; 54 command[0] = avdtp_header(transaction_label, AVDTP_SINGLE_PACKET, AVDTP_CMD_MSG); 55 command[1] = (uint8_t)identifier; 56 return l2cap_send(cid, command, sizeof(command)); 57 } 58 59 static int avdtp_initiator_send_signaling_cmd_with_seid(uint16_t cid, avdtp_signal_identifier_t identifier, uint8_t transaction_label, uint8_t sep_id){ 60 uint8_t command[3]; 61 command[0] = avdtp_header(transaction_label, AVDTP_SINGLE_PACKET, AVDTP_CMD_MSG); 62 command[1] = (uint8_t)identifier; 63 command[2] = sep_id << 2; 64 return l2cap_send(cid, command, sizeof(command)); 65 } 66 67 static int avdtp_initiator_send_signaling_cmd_delay_report(uint16_t cid, uint8_t transaction_label, uint8_t sep_id, uint16_t delay_ms){ 68 uint8_t command[5]; 69 command[0] = avdtp_header(transaction_label, AVDTP_SINGLE_PACKET, AVDTP_CMD_MSG); 70 command[1] = AVDTP_SI_DELAYREPORT; 71 command[2] = sep_id << 2; 72 big_endian_store_16(command, 3, delay_ms); 73 return l2cap_send(cid, command, sizeof(command)); 74 } 75 76 void avdtp_initiator_stream_config_subsm(avdtp_connection_t *connection, uint8_t *packet, uint16_t size, int offset) { 77 // int status = 0; 78 avdtp_stream_endpoint_t * stream_endpoint = NULL; 79 avdtp_stream_endpoint_t * stream_endpoint_for_event = NULL; 80 81 avdtp_sep_t sep; 82 if (connection->initiator_connection_state == AVDTP_SIGNALING_CONNECTION_INITIATOR_W4_ANSWER) { 83 connection->initiator_connection_state = AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE; 84 } else { 85 stream_endpoint = avdtp_get_stream_endpoint_for_seid(connection->initiator_local_seid); 86 if (stream_endpoint == NULL) { 87 log_debug("no stream endpoint for local seid %u", connection->initiator_local_seid); 88 return; 89 } 90 log_debug("using stream endpoint %p for local seid %u", stream_endpoint, connection->initiator_local_seid); 91 92 sep.seid = connection->initiator_remote_seid; 93 94 if (stream_endpoint->initiator_config_state != AVDTP_INITIATOR_W4_ANSWER) { 95 log_error("initiator_config_state is in wrong state %d, expected %d", stream_endpoint->initiator_config_state, AVDTP_INITIATOR_W4_ANSWER); 96 return; 97 } 98 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_STREAM_CONFIG_IDLE; 99 } 100 101 switch (connection->initiator_signaling_packet.message_type){ 102 case AVDTP_RESPONSE_ACCEPT_MSG: 103 switch (connection->initiator_signaling_packet.signal_identifier){ 104 case AVDTP_SI_DISCOVER:{ 105 if (connection->initiator_signaling_packet.transaction_label != connection->initiator_transaction_label){ 106 log_info("unexpected transaction label, got %d, expected %d", connection->initiator_signaling_packet.transaction_label, connection->initiator_transaction_label); 107 // status = BAD_HEADER_FORMAT; 108 break; 109 } 110 111 if (size == 3){ 112 log_info("ERROR code %02x", packet[offset]); 113 break; 114 } 115 116 int i; 117 for (i = offset; i < size; i += 2){ 118 sep.seid = packet[i] >> 2; 119 offset++; 120 if ((sep.seid < 0x01) || (sep.seid > 0x3E)){ 121 log_info("invalid sep id"); 122 // status = BAD_ACP_SEID; 123 break; 124 } 125 sep.in_use = (packet[i] >> 1) & 0x01; 126 sep.media_type = (avdtp_media_type_t)(packet[i+1] >> 4); 127 sep.type = (avdtp_sep_type_t)((packet[i+1] >> 3) & 0x01); 128 avdtp_signaling_emit_sep(connection->avdtp_cid, sep); 129 } 130 avdtp_signaling_emit_sep_done(connection->avdtp_cid); 131 break; 132 } 133 134 case AVDTP_SI_GET_CAPABILITIES: 135 case AVDTP_SI_GET_ALL_CAPABILITIES: 136 sep.registered_service_categories = avdtp_unpack_service_capabilities(connection, connection->initiator_signaling_packet.signal_identifier, &sep.capabilities, packet+offset, size-offset); 137 avdtp_signaling_emit_capabilities(connection->avdtp_cid, 138 connection->initiator_remote_seid, &sep.capabilities, 139 sep.registered_service_categories); 140 break; 141 142 case AVDTP_SI_RECONFIGURE: 143 if (!stream_endpoint){ 144 log_error("AVDTP_SI_RECONFIGURE: stream endpoint is null"); 145 break; 146 } 147 stream_endpoint_for_event = stream_endpoint; 148 stream_endpoint->remote_sep.configured_service_categories |= stream_endpoint->remote_configuration_bitmap; 149 stream_endpoint->remote_sep.configuration = stream_endpoint->remote_configuration; 150 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_OPENED; 151 152 // copy media codec configuration if reconfigured 153 if ((stream_endpoint->remote_configuration_bitmap & (1 << AVDTP_MEDIA_CODEC)) != 0){ 154 btstack_assert(stream_endpoint->remote_configuration.media_codec.media_codec_information_len == stream_endpoint->media_codec_configuration_len); 155 (void)memcpy(stream_endpoint->media_codec_configuration_info, stream_endpoint->remote_configuration.media_codec.media_codec_information, stream_endpoint->media_codec_configuration_len); 156 } 157 avdtp_signaling_emit_configuration(stream_endpoint, connection->avdtp_cid, 1, 158 &sep.configuration, (1 << AVDTP_MEDIA_CODEC)); 159 break; 160 161 case AVDTP_SI_SET_CONFIGURATION: 162 if (!stream_endpoint){ 163 log_error("AVDTP_SI_SET_CONFIGURATION: stream endpoint is null"); 164 break; 165 } 166 167 stream_endpoint_for_event = stream_endpoint; 168 169 sep.configured_service_categories = stream_endpoint->remote_configuration_bitmap; 170 sep.configuration = stream_endpoint->remote_configuration; 171 sep.in_use = 1; 172 173 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_CONFIGURED; 174 stream_endpoint->remote_sep = sep; 175 stream_endpoint->connection = connection; 176 connection->configuration_state = AVDTP_CONFIGURATION_STATE_LOCAL_CONFIGURED; 177 178 log_info("configured remote seid %d", stream_endpoint->remote_sep.seid); 179 180 if ((stream_endpoint->remote_configuration_bitmap & (1 << AVDTP_MEDIA_CODEC)) != 0) { 181 // copy media codec configuration if length correct 182 if (stream_endpoint->remote_configuration.media_codec.media_codec_information_len != 183 stream_endpoint->media_codec_configuration_len){ 184 (void) memcpy(stream_endpoint->media_codec_configuration_info, 185 stream_endpoint->remote_configuration.media_codec.media_codec_information, 186 stream_endpoint->media_codec_configuration_len); 187 } else { 188 log_error("Remote codec info len %u !=> local buffer len %u", stream_endpoint->remote_configuration.media_codec.media_codec_information_len, 189 stream_endpoint->media_codec_configuration_len); 190 (void) memset(stream_endpoint->media_codec_configuration_info, 0, stream_endpoint->media_codec_configuration_len); 191 } 192 avdtp_signaling_emit_configuration(stream_endpoint, connection->avdtp_cid, 0, 193 &sep.configuration, (1 << AVDTP_MEDIA_CODEC)); 194 } 195 break; 196 197 case AVDTP_SI_OPEN: 198 if (!stream_endpoint){ 199 log_error("AVDTP_SI_OPEN: stream endpoint is null"); 200 break; 201 } 202 if (stream_endpoint->state != AVDTP_STREAM_ENDPOINT_W4_ACCEPT_OPEN_STREAM) { 203 log_error("AVDTP_SI_OPEN in wrong stream endpoint state %d", stream_endpoint->state); 204 return; 205 } 206 stream_endpoint_for_event = stream_endpoint; 207 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_W4_L2CAP_FOR_MEDIA_CONNECTED; 208 connection->initiator_local_seid = stream_endpoint->sep.seid; 209 l2cap_create_channel(avdtp_packet_handler, connection->remote_addr, BLUETOOTH_PSM_AVDTP, 0xffff, NULL); 210 return; 211 case AVDTP_SI_START: 212 if (!stream_endpoint){ 213 log_error("AVDTP_SI_START: stream endpoint is null"); 214 break; 215 } 216 if (stream_endpoint->state != AVDTP_STREAM_ENDPOINT_OPENED) { 217 log_error("AVDTP_SI_START in wrong stream endpoint state %d", stream_endpoint->state); 218 return; 219 } 220 stream_endpoint_for_event = stream_endpoint; 221 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_STREAMING; 222 break; 223 case AVDTP_SI_SUSPEND: 224 if (!stream_endpoint){ 225 log_error("AVDTP_SI_SUSPEND: stream endpoint is null"); 226 break; 227 } 228 if (stream_endpoint->state != AVDTP_STREAM_ENDPOINT_STREAMING) { 229 log_error("AVDTP_SI_SUSPEND in wrong stream endpoint state %d", stream_endpoint->state); 230 return; 231 } 232 stream_endpoint_for_event = stream_endpoint; 233 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_OPENED; 234 break; 235 case AVDTP_SI_CLOSE: 236 if (!stream_endpoint){ 237 log_error("AVDTP_SI_CLOSE: stream endpoint is null"); 238 break; 239 } 240 switch (stream_endpoint->state){ 241 case AVDTP_STREAM_ENDPOINT_OPENED: 242 case AVDTP_STREAM_ENDPOINT_STREAMING: 243 stream_endpoint_for_event = stream_endpoint; 244 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_CLOSING; 245 l2cap_disconnect(stream_endpoint->l2cap_media_cid, 0); 246 break; 247 default: 248 break; 249 } 250 break; 251 case AVDTP_SI_ABORT: 252 if (!stream_endpoint){ 253 log_error("AVDTP_SI_ABORT: stream endpoint is null"); 254 break; 255 } 256 switch (stream_endpoint->state){ 257 case AVDTP_STREAM_ENDPOINT_CONFIGURED: 258 case AVDTP_STREAM_ENDPOINT_CLOSING: 259 case AVDTP_STREAM_ENDPOINT_OPENED: 260 case AVDTP_STREAM_ENDPOINT_STREAMING: 261 stream_endpoint_for_event = stream_endpoint; 262 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_ABORTING; 263 l2cap_disconnect(stream_endpoint->l2cap_media_cid, 0); 264 break; 265 default: 266 break; 267 } 268 break; 269 270 case AVDTP_SI_DELAYREPORT: 271 break; 272 case AVDTP_SI_GET_CONFIGURATION: 273 break; 274 default: 275 log_info("AVDTP_RESPONSE_ACCEPT_MSG, signal %d not implemented", connection->initiator_signaling_packet.signal_identifier); 276 break; 277 } 278 if (stream_endpoint_for_event != NULL){ 279 avdtp_signaling_emit_accept_for_stream_endpoint(stream_endpoint_for_event, connection->initiator_local_seid, 280 connection->initiator_signaling_packet.signal_identifier, true); 281 } else { 282 avdtp_signaling_emit_accept(connection->avdtp_cid, 0, connection->initiator_signaling_packet.signal_identifier, true); 283 } 284 connection->initiator_transaction_label = avdtp_get_next_transaction_label(); 285 break; 286 case AVDTP_RESPONSE_REJECT_MSG: 287 switch (connection->initiator_signaling_packet.signal_identifier){ 288 case AVDTP_SI_SET_CONFIGURATION: 289 connection->configuration_state = AVDTP_CONFIGURATION_STATE_IDLE; 290 log_info("Received reject for set configuration, role changed from initiator to acceptor. TODO: implement retry."); 291 break; 292 default: 293 break; 294 } 295 log_info("AVDTP_RESPONSE_REJECT_MSG signal %s", avdtp_si2str(connection->initiator_signaling_packet.signal_identifier)); 296 avdtp_signaling_emit_reject(connection->avdtp_cid, connection->initiator_local_seid, 297 connection->initiator_signaling_packet.signal_identifier, true); 298 return; 299 case AVDTP_GENERAL_REJECT_MSG: 300 log_info("AVDTP_GENERAL_REJECT_MSG signal %s", avdtp_si2str(connection->initiator_signaling_packet.signal_identifier)); 301 avdtp_signaling_emit_general_reject(connection->avdtp_cid, connection->initiator_local_seid, 302 connection->initiator_signaling_packet.signal_identifier, true); 303 return; 304 default: 305 break; 306 } 307 } 308 309 static bool avdtp_initiator_stream_config_subsm_run_signaling(avdtp_connection_t * connection){ 310 switch (connection->initiator_connection_state){ 311 case AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_DISCOVER_SEPS: 312 log_info("W2_DISCOVER_SEPS"); 313 connection->initiator_connection_state = AVDTP_SIGNALING_CONNECTION_INITIATOR_W4_ANSWER; 314 avdtp_initiator_send_signaling_cmd(connection->l2cap_signaling_cid, AVDTP_SI_DISCOVER, connection->initiator_transaction_label); 315 return true; 316 case AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_CAPABILITIES: 317 log_info("W2_GET_CAPABILITIES"); 318 connection->initiator_connection_state = AVDTP_SIGNALING_CONNECTION_INITIATOR_W4_ANSWER; 319 avdtp_initiator_send_signaling_cmd_with_seid(connection->l2cap_signaling_cid, AVDTP_SI_GET_CAPABILITIES, connection->initiator_transaction_label, connection->initiator_remote_seid); 320 return true; 321 case AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_ALL_CAPABILITIES: 322 log_info("W2_GET_ALL_CAPABILITIES"); 323 connection->initiator_connection_state = AVDTP_SIGNALING_CONNECTION_INITIATOR_W4_ANSWER; 324 avdtp_initiator_send_signaling_cmd_with_seid(connection->l2cap_signaling_cid, AVDTP_SI_GET_ALL_CAPABILITIES, connection->initiator_transaction_label, connection->initiator_remote_seid); 325 return true; 326 case AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_CONFIGURATION: 327 log_info("W4_GET_CONFIGURATION"); 328 connection->initiator_connection_state = AVDTP_SIGNALING_CONNECTION_INITIATOR_W4_ANSWER; 329 avdtp_initiator_send_signaling_cmd_with_seid(connection->l2cap_signaling_cid, AVDTP_SI_GET_CONFIGURATION, connection->initiator_transaction_label, connection->initiator_remote_seid); 330 return true; 331 case AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_SEND_DELAY_REPORT: 332 log_info("W4_DELAY_REPORT"); 333 connection->initiator_connection_state = AVDTP_SIGNALING_CONNECTION_INITIATOR_W4_ANSWER; 334 avdtp_initiator_send_signaling_cmd_delay_report(connection->l2cap_signaling_cid, connection->initiator_transaction_label, 335 connection->initiator_remote_seid, connection->delay_ms); 336 return true; 337 default: 338 break; 339 } 340 return false; 341 } 342 343 static bool avdtp_initiator_stream_config_subsm_run_endpoint(avdtp_connection_t * connection, avdtp_stream_endpoint_t * stream_endpoint){ 344 log_debug("SE %p, initiator_config_state: 0x%02x", stream_endpoint, stream_endpoint->initiator_config_state); 345 switch (stream_endpoint->initiator_config_state){ 346 case AVDTP_INITIATOR_W2_SET_CONFIGURATION: 347 case AVDTP_INITIATOR_W2_RECONFIGURE_STREAM_WITH_SEID:{ 348 if ((stream_endpoint->initiator_config_state == AVDTP_INITIATOR_W2_SET_CONFIGURATION) && (connection->configuration_state != AVDTP_CONFIGURATION_STATE_LOCAL_INITIATED)){ 349 log_info("initiator SM stop sending SET_CONFIGURATION cmd:"); 350 break; 351 } 352 log_info("W2_(RE)CONFIGURATION bitmap, local seid 0x%02x, remote seid 0x%02x", connection->initiator_local_seid, connection->initiator_remote_seid); 353 // log_info_hexdump( connection->remote_capabilities.media_codec.media_codec_information, connection->remote_capabilities.media_codec.media_codec_information_len); 354 connection->initiator_signaling_packet.acp_seid = connection->initiator_remote_seid; 355 connection->initiator_signaling_packet.int_seid = connection->initiator_local_seid; 356 357 connection->initiator_signaling_packet.signal_identifier = AVDTP_SI_SET_CONFIGURATION; 358 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_CONFIGURATION_SUBSTATEMACHINE; 359 if (stream_endpoint->initiator_config_state == AVDTP_INITIATOR_W2_RECONFIGURE_STREAM_WITH_SEID){ 360 connection->initiator_signaling_packet.signal_identifier = AVDTP_SI_RECONFIGURE; 361 } 362 363 avdtp_prepare_capabilities(&connection->initiator_signaling_packet, connection->initiator_transaction_label, stream_endpoint->remote_configuration_bitmap, stream_endpoint->remote_configuration, connection->initiator_signaling_packet.signal_identifier); 364 l2cap_reserve_packet_buffer(); 365 uint8_t * out_buffer = l2cap_get_outgoing_buffer(); 366 uint16_t pos = avdtp_signaling_create_fragment(connection->l2cap_signaling_cid, &connection->initiator_signaling_packet, out_buffer); 367 if ((connection->initiator_signaling_packet.packet_type != AVDTP_SINGLE_PACKET) && (connection->initiator_signaling_packet.packet_type != AVDTP_END_PACKET)){ 368 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_FRAGMENTATED_COMMAND; 369 log_info("fragmented"); 370 } else { 371 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_W4_ANSWER; 372 } 373 l2cap_send_prepared(connection->l2cap_signaling_cid, pos); 374 if (stream_endpoint->initiator_config_state == AVDTP_INITIATOR_FRAGMENTATED_COMMAND){ 375 avdtp_request_can_send_now_initiator(connection); 376 } 377 return true; 378 } 379 case AVDTP_INITIATOR_FRAGMENTATED_COMMAND:{ 380 l2cap_reserve_packet_buffer(); 381 uint8_t * out_buffer = l2cap_get_outgoing_buffer(); 382 uint16_t pos = avdtp_signaling_create_fragment(connection->l2cap_signaling_cid, &connection->initiator_signaling_packet, out_buffer); 383 if ((connection->initiator_signaling_packet.packet_type != AVDTP_SINGLE_PACKET) && (connection->initiator_signaling_packet.packet_type != AVDTP_END_PACKET)){ 384 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_FRAGMENTATED_COMMAND; 385 log_info("fragmented"); 386 } else { 387 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_W4_ANSWER; 388 } 389 l2cap_send_prepared(connection->l2cap_signaling_cid, pos); 390 if (stream_endpoint->initiator_config_state == AVDTP_INITIATOR_FRAGMENTATED_COMMAND){ 391 avdtp_request_can_send_now_initiator(connection); 392 } 393 return true; 394 } 395 case AVDTP_INITIATOR_W2_OPEN_STREAM: 396 switch (stream_endpoint->state){ 397 case AVDTP_STREAM_ENDPOINT_W2_REQUEST_OPEN_STREAM: 398 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_W4_ACCEPT_OPEN_STREAM; 399 log_info("send AVDTP_SI_OPEN signaling to remote, transaction_label %d, remote seid 0x%02x", connection->initiator_transaction_label, connection->initiator_remote_seid); 400 avdtp_initiator_send_signaling_cmd_with_seid(connection->l2cap_signaling_cid, AVDTP_SI_OPEN, connection->initiator_transaction_label, connection->initiator_remote_seid); 401 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_W4_ANSWER; 402 return true; 403 default: 404 break; 405 } 406 break; 407 default: 408 break; 409 } 410 return false; 411 } 412 413 void avdtp_initiator_stream_config_subsm_handle_can_send_now_signaling(avdtp_connection_t *connection) { 414 bool sent; 415 416 sent = avdtp_initiator_stream_config_subsm_run_signaling(connection); 417 if (sent) return; 418 419 avdtp_stream_endpoint_t * stream_endpoint = avdtp_get_stream_endpoint_for_seid(connection->initiator_local_seid); 420 421 if (stream_endpoint == NULL) return; 422 sent = avdtp_initiator_stream_config_subsm_run_endpoint(connection, stream_endpoint); 423 if (sent) return; 424 425 log_debug("stream: start %u, close %u, abort %u, suspend %u, request %u", stream_endpoint->start_stream, stream_endpoint->close_stream, 426 stream_endpoint->abort_stream, stream_endpoint->suspend_stream, stream_endpoint->request_can_send_now); 427 428 if (stream_endpoint->start_stream){ 429 stream_endpoint->start_stream = 0; 430 if (stream_endpoint->state == AVDTP_STREAM_ENDPOINT_OPENED){ 431 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_W4_ANSWER; 432 connection->initiator_local_seid = stream_endpoint->sep.seid; 433 connection->initiator_remote_seid = stream_endpoint->remote_sep.seid; 434 connection->initiator_transaction_label = avdtp_get_next_transaction_label(); 435 avdtp_initiator_send_signaling_cmd_with_seid(connection->l2cap_signaling_cid, AVDTP_SI_START, connection->initiator_transaction_label, connection->initiator_remote_seid); 436 return; 437 } 438 } 439 440 if (stream_endpoint->close_stream){ 441 stream_endpoint->close_stream = 0; 442 switch (stream_endpoint->state){ 443 case AVDTP_STREAM_ENDPOINT_OPENED: 444 case AVDTP_STREAM_ENDPOINT_STREAMING: 445 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_W4_ANSWER; 446 connection->initiator_local_seid = stream_endpoint->sep.seid; 447 connection->initiator_remote_seid = stream_endpoint->remote_sep.seid; 448 connection->initiator_transaction_label = avdtp_get_next_transaction_label(); 449 avdtp_initiator_send_signaling_cmd_with_seid(connection->l2cap_signaling_cid, AVDTP_SI_CLOSE, connection->initiator_transaction_label, connection->initiator_remote_seid); 450 return; 451 default: 452 break; 453 } 454 } 455 456 if (stream_endpoint->abort_stream){ 457 stream_endpoint->abort_stream = 0; 458 switch (stream_endpoint->state){ 459 case AVDTP_STREAM_ENDPOINT_CONFIGURED: 460 case AVDTP_STREAM_ENDPOINT_CLOSING: 461 case AVDTP_STREAM_ENDPOINT_OPENED: 462 case AVDTP_STREAM_ENDPOINT_STREAMING: 463 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_W4_ANSWER; 464 connection->initiator_local_seid = stream_endpoint->sep.seid; 465 connection->initiator_remote_seid = stream_endpoint->remote_sep.seid; 466 connection->initiator_transaction_label = avdtp_get_next_transaction_label(); 467 avdtp_initiator_send_signaling_cmd_with_seid(connection->l2cap_signaling_cid, AVDTP_SI_ABORT, connection->initiator_transaction_label, connection->initiator_remote_seid); 468 return; 469 default: 470 break; 471 } 472 } 473 474 if (stream_endpoint->suspend_stream){ 475 stream_endpoint->suspend_stream = 0; 476 if (stream_endpoint->state == AVDTP_STREAM_ENDPOINT_STREAMING){ 477 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_W4_ANSWER; 478 connection->initiator_local_seid = stream_endpoint->sep.seid; 479 connection->initiator_remote_seid = stream_endpoint->remote_sep.seid; 480 connection->initiator_transaction_label = avdtp_get_next_transaction_label(); 481 avdtp_initiator_send_signaling_cmd_with_seid(connection->l2cap_signaling_cid, AVDTP_SI_SUSPEND, connection->initiator_transaction_label, connection->initiator_remote_seid); 482 return; 483 } 484 } 485 486 } 487 488 void avdtp_initiator_stream_config_subsm_handle_can_send_now_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint) { 489 if (stream_endpoint->state == AVDTP_STREAM_ENDPOINT_STREAMING){ 490 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_STREAMING; 491 avdtp_streaming_emit_can_send_media_packet_now(stream_endpoint, stream_endpoint->sequence_number); 492 } 493 } 494