1 /* 2 * Copyright (C) 2014 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 BLUEKITCHEN 24 * GMBH 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__ "hfp_hf.c" 39 40 // ***************************************************************************** 41 // 42 // HFP Hands-Free (HF) unit 43 // 44 // ***************************************************************************** 45 46 #include "btstack_config.h" 47 48 #include <stdint.h> 49 #include <stdio.h> 50 #include <string.h> 51 52 #include "bluetooth_sdp.h" 53 #include "btstack_debug.h" 54 #include "btstack_event.h" 55 #include "btstack_memory.h" 56 #include "btstack_run_loop.h" 57 #include "classic/core.h" 58 #include "classic/hfp.h" 59 #include "classic/hfp_hf.h" 60 #include "classic/sdp_client_rfcomm.h" 61 #include "classic/sdp_server.h" 62 #include "classic/sdp_util.h" 63 #include "hci.h" 64 #include "hci_cmd.h" 65 #include "hci_dump.h" 66 #include "l2cap.h" 67 68 // const 69 static const char hfp_hf_default_service_name[] = "Hands-Free unit"; 70 71 // globals 72 73 // higher layer callbacks 74 static btstack_packet_handler_t hfp_hf_callback; 75 76 static btstack_packet_callback_registration_t hfp_hf_hci_event_callback_registration; 77 78 static uint16_t hfp_hf_supported_features; 79 static uint8_t hfp_hf_codecs_nr; 80 static uint8_t hfp_hf_codecs[HFP_MAX_NUM_CODECS]; 81 82 static uint8_t hfp_hf_indicators_nr; 83 static uint8_t hfp_hf_indicators[HFP_MAX_NUM_INDICATORS]; 84 static uint32_t hfp_hf_indicators_value[HFP_MAX_NUM_INDICATORS]; 85 86 static uint8_t hfp_hf_speaker_gain; 87 static uint8_t hfp_hf_microphone_gain; 88 89 static hfp_call_status_t hfp_hf_call_status; 90 static hfp_callsetup_status_t hfp_hf_callsetup_status; 91 static hfp_callheld_status_t hfp_hf_callheld_status; 92 93 static char hfp_hf_phone_number[25]; 94 95 96 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 97 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 98 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 99 return hf && ag; 100 } 101 102 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 103 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_THREE_WAY_CALLING); 104 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_THREE_WAY_CALLING); 105 return hf && ag; 106 } 107 108 109 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 110 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_HF_INDICATORS); 111 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_HF_INDICATORS); 112 return hf && ag; 113 } 114 115 static bool hfp_hf_vra_flag_supported(hfp_connection_t * hfp_connection){ 116 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION); 117 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION); 118 return hf && ag; 119 } 120 121 static bool hfp_hf_enhanced_vra_flag_supported(hfp_connection_t * hfp_connection){ 122 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS); 123 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS); 124 return hf && ag; 125 } 126 127 static hfp_connection_t * get_hfp_hf_connection_context_for_acl_handle(uint16_t handle){ 128 btstack_linked_list_iterator_t it; 129 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 130 while (btstack_linked_list_iterator_has_next(&it)){ 131 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 132 if (hfp_connection->acl_handle != handle) continue; 133 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 134 return hfp_connection; 135 } 136 return NULL; 137 } 138 139 /* emit functions */ 140 141 static void hfp_hf_emit_subscriber_information(const hfp_connection_t * hfp_connection, uint8_t status){ 142 if (hfp_hf_callback == NULL) return; 143 uint16_t bnip_number_len = btstack_min((uint16_t) strlen(hfp_connection->bnip_number), sizeof(hfp_connection->bnip_number)-1); 144 uint8_t event[7 + sizeof(hfp_connection->bnip_number)]; 145 event[0] = HCI_EVENT_HFP_META; 146 event[1] = 6 + bnip_number_len; 147 event[2] = HFP_SUBEVENT_SUBSCRIBER_NUMBER_INFORMATION; 148 little_endian_store_16(event, 3, hfp_connection->acl_handle); 149 event[5] = status; 150 event[6] = hfp_connection->bnip_type; 151 memcpy(&event[7], hfp_connection->bnip_number, bnip_number_len); 152 event[7 + bnip_number_len] = 0; 153 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 8 + bnip_number_len); 154 } 155 156 static void hfp_hf_emit_type_number_alpha(const hfp_connection_t * hfp_connection, uint8_t event_subtype){ 157 if (hfp_hf_callback == NULL) return; 158 uint16_t bnip_number_len = btstack_min((uint16_t) strlen(hfp_connection->bnip_number), sizeof(hfp_connection->bnip_number)-1); 159 // 10 fixed - 1 (bnip_number_len <= sizeof(hfp_connection->bnip_number)-1) + 1 (trailing \0 for line buffer) 160 uint8_t event[10 + sizeof(hfp_connection->bnip_number) + sizeof(hfp_connection->line_buffer)]; 161 uint8_t alpha_len = hfp_connection->clip_have_alpha ? (uint16_t) strlen((const char *) hfp_connection->line_buffer) : 0; 162 uint8_t pos = 0; 163 event[pos++] = HCI_EVENT_HFP_META; 164 event[pos++] = 8 + bnip_number_len + alpha_len; 165 event[pos++] = event_subtype; 166 little_endian_store_16(event, 3, hfp_connection->acl_handle); 167 pos += 2; 168 event[pos++] = hfp_connection->bnip_type; 169 event[pos++] = bnip_number_len + 1; 170 memcpy(&event[7], hfp_connection->bnip_number, bnip_number_len); 171 pos += bnip_number_len; 172 event[pos++] = 0; 173 event[pos++] = alpha_len + 1; 174 memcpy(&event[pos], hfp_connection->line_buffer, alpha_len); 175 pos += alpha_len; 176 event[pos++] = 0; 177 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 178 } 179 180 static void hfp_hf_emit_enhanced_call_status(const hfp_connection_t * hfp_connection){ 181 if (hfp_hf_callback == NULL) return; 182 183 uint16_t bnip_number_len = (uint16_t) strlen((const char *) hfp_connection->bnip_number); 184 uint8_t event[11 + HFP_BNEP_NUM_MAX_SIZE]; 185 event[0] = HCI_EVENT_HFP_META; 186 event[1] = 10 + bnip_number_len + 1; 187 event[2] = HFP_SUBEVENT_ENHANCED_CALL_STATUS; 188 little_endian_store_16(event, 3, hfp_connection->acl_handle); 189 event[5] = hfp_connection->clcc_idx; 190 event[6] = hfp_connection->clcc_dir; 191 event[7] = hfp_connection->clcc_status; 192 event[8] = hfp_connection->clcc_mode; 193 event[9] = hfp_connection->clcc_mpty; 194 event[10] = hfp_connection->bnip_type; 195 memcpy(&event[11], hfp_connection->bnip_number, bnip_number_len + 1); 196 197 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 11 + bnip_number_len + 1); 198 } 199 200 static void hfp_emit_ag_indicator_mapping_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 201 if (hfp_hf_callback == NULL) return; 202 uint8_t event[8 + HFP_MAX_INDICATOR_DESC_SIZE]; 203 uint16_t indicator_len = btstack_min((uint16_t) strlen(indicator->name), HFP_MAX_INDICATOR_DESC_SIZE-1); 204 event[0] = HCI_EVENT_HFP_META; 205 event[1] = 7 + indicator_len; 206 event[2] = HFP_SUBEVENT_AG_INDICATOR_MAPPING; 207 little_endian_store_16(event, 3, hfp_connection->acl_handle); 208 event[5] = indicator->index; 209 event[6] = indicator->min_range; 210 event[7] = indicator->max_range; 211 memcpy(&event[8], indicator->name, indicator_len); 212 event[8+indicator_len] = 0; 213 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 9 + indicator_len); 214 } 215 216 static void hfp_emit_ag_indicator_status_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 217 if (hfp_hf_callback == NULL) return; 218 uint8_t event[12+HFP_MAX_INDICATOR_DESC_SIZE]; 219 uint16_t indicator_len = btstack_min((uint16_t) strlen(indicator->name), HFP_MAX_INDICATOR_DESC_SIZE-1); 220 event[0] = HCI_EVENT_HFP_META; 221 event[1] = 11 + indicator_len; 222 event[2] = HFP_SUBEVENT_AG_INDICATOR_STATUS_CHANGED; 223 little_endian_store_16(event, 3, hfp_connection->acl_handle); 224 event[5] = indicator->index; 225 event[6] = indicator->status; 226 event[7] = indicator->min_range; 227 event[8] = indicator->max_range; 228 event[9] = indicator->mandatory; 229 event[10] = indicator->enabled; 230 event[11] = indicator->status_changed; 231 memcpy(&event[12], indicator->name, indicator_len); 232 event[12+indicator_len] = 0; 233 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 13 + indicator_len); 234 } 235 236 static void hfp_emit_network_operator_event(const hfp_connection_t * hfp_connection){ 237 if (hfp_hf_callback == NULL) return; 238 uint16_t operator_len = btstack_min((uint16_t) strlen(hfp_connection->network_operator.name), HFP_MAX_NETWORK_OPERATOR_NAME_SIZE-1); 239 uint8_t event[7+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE]; 240 event[0] = HCI_EVENT_HFP_META; 241 event[1] = sizeof(event) - 2; 242 event[2] = HFP_SUBEVENT_NETWORK_OPERATOR_CHANGED; 243 little_endian_store_16(event, 3, hfp_connection->acl_handle); 244 event[5] = hfp_connection->network_operator.mode; 245 event[6] = hfp_connection->network_operator.format; 246 memcpy(&event[7], hfp_connection->network_operator.name, operator_len); 247 event[7+operator_len] = 0; 248 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 8 + operator_len); 249 } 250 251 252 static void hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection_t * hfp_connection){ 253 btstack_assert(hfp_connection != NULL); 254 uint8_t event[HFP_MAX_VR_TEXT_SIZE + 11]; 255 int pos = 0; 256 event[pos++] = HCI_EVENT_HFP_META; 257 event[pos++] = sizeof(event) - 2; 258 event[pos++] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE; 259 little_endian_store_16(event, pos, hfp_connection->acl_handle); 260 pos += 2; 261 little_endian_store_16(event, pos, hfp_connection->ag_msg.text_id); 262 pos += 2; 263 event[pos++] = hfp_connection->ag_msg.text_type; 264 event[pos++] = hfp_connection->ag_msg.text_operation; 265 266 // length, zero ending is already in message 267 uint8_t * value = &hfp_connection->line_buffer[0]; 268 uint16_t value_length = hfp_connection->ag_vra_msg_length; 269 270 little_endian_store_16(event, pos, value_length); 271 pos += 2; 272 memcpy(&event[pos], value, value_length); 273 pos += value_length; 274 275 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 276 } 277 278 /* send commands */ 279 280 static inline int hfp_hf_send_cmd(uint16_t cid, const char * cmd){ 281 char buffer[20]; 282 snprintf(buffer, sizeof(buffer), "AT%s\r", cmd); 283 return send_str_over_rfcomm(cid, buffer); 284 } 285 286 static inline int hfp_hf_send_cmd_with_mark(uint16_t cid, const char * cmd, const char * mark){ 287 char buffer[20]; 288 snprintf(buffer, sizeof(buffer), "AT%s%s\r", cmd, mark); 289 return send_str_over_rfcomm(cid, buffer); 290 } 291 292 static inline int hfp_hf_send_cmd_with_int(uint16_t cid, const char * cmd, uint16_t value){ 293 char buffer[40]; 294 snprintf(buffer, sizeof(buffer), "AT%s=%d\r", cmd, value); 295 return send_str_over_rfcomm(cid, buffer); 296 } 297 298 static int hfp_hf_cmd_notify_on_codecs(uint16_t cid){ 299 char buffer[30]; 300 const int size = sizeof(buffer); 301 int offset = snprintf(buffer, size, "AT%s=", HFP_AVAILABLE_CODECS); 302 offset += join(buffer+offset, size-offset, hfp_hf_codecs, hfp_hf_codecs_nr); 303 offset += snprintf(buffer+offset, size-offset, "\r"); 304 return send_str_over_rfcomm(cid, buffer); 305 } 306 307 static int hfp_hf_cmd_activate_status_update_for_ag_indicator(uint16_t cid, uint32_t indicators_status, int indicators_nr){ 308 char buffer[50]; 309 const int size = sizeof(buffer); 310 int offset = snprintf(buffer, size, "AT%s=", HFP_UPDATE_ENABLE_STATUS_FOR_INDIVIDUAL_AG_INDICATORS); 311 offset += join_bitmap(buffer+offset, size-offset, indicators_status, indicators_nr); 312 offset += snprintf(buffer+offset, size-offset, "\r"); 313 return send_str_over_rfcomm(cid, buffer); 314 } 315 316 static int hfp_hf_cmd_list_supported_generic_status_indicators(uint16_t cid){ 317 char buffer[30]; 318 const int size = sizeof(buffer); 319 int offset = snprintf(buffer, size, "AT%s=", HFP_GENERIC_STATUS_INDICATOR); 320 offset += join(buffer+offset, size-offset, hfp_hf_indicators, hfp_hf_indicators_nr); 321 offset += snprintf(buffer+offset, size-offset, "\r"); 322 return send_str_over_rfcomm(cid, buffer); 323 } 324 325 static int hfp_hf_cmd_activate_status_update_for_all_ag_indicators(uint16_t cid, uint8_t activate){ 326 char buffer[20]; 327 snprintf(buffer, sizeof(buffer), "AT%s=3,0,0,%d\r", HFP_ENABLE_STATUS_UPDATE_FOR_AG_INDICATORS, activate); 328 return send_str_over_rfcomm(cid, buffer); 329 } 330 331 static int hfp_hf_initiate_outgoing_call_cmd(uint16_t cid){ 332 char buffer[40]; 333 snprintf(buffer, sizeof(buffer), "%s%s;\r", HFP_CALL_PHONE_NUMBER, hfp_hf_phone_number); 334 return send_str_over_rfcomm(cid, buffer); 335 } 336 337 static int hfp_hf_send_memory_dial_cmd(uint16_t cid, int memory_id){ 338 char buffer[40]; 339 snprintf(buffer, sizeof(buffer), "%s>%d;\r", HFP_CALL_PHONE_NUMBER, memory_id); 340 return send_str_over_rfcomm(cid, buffer); 341 } 342 343 static int hfp_hf_send_chld(uint16_t cid, unsigned int number){ 344 char buffer[40]; 345 snprintf(buffer, sizeof(buffer), "AT%s=%u\r", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, number); 346 return send_str_over_rfcomm(cid, buffer); 347 } 348 349 static int hfp_hf_send_dtmf(uint16_t cid, char code){ 350 char buffer[20]; 351 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", HFP_TRANSMIT_DTMF_CODES, code); 352 return send_str_over_rfcomm(cid, buffer); 353 } 354 355 static int hfp_hf_cmd_ata(uint16_t cid){ 356 return send_str_over_rfcomm(cid, (char *) "ATA\r"); 357 } 358 359 static int hfp_hf_cmd_exchange_supported_features(uint16_t cid){ 360 return hfp_hf_send_cmd_with_int(cid, HFP_SUPPORTED_FEATURES, hfp_hf_supported_features); 361 } 362 363 static int hfp_hf_cmd_retrieve_indicators(uint16_t cid){ 364 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "=?"); 365 } 366 367 static int hfp_hf_cmd_retrieve_indicators_status(uint16_t cid){ 368 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "?"); 369 } 370 371 static int hfp_hf_cmd_retrieve_can_hold_call(uint16_t cid){ 372 return hfp_hf_send_cmd_with_mark(cid, HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, "=?"); 373 } 374 375 static int hfp_hf_cmd_retrieve_supported_generic_status_indicators(uint16_t cid){ 376 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "=?"); 377 } 378 379 static int hfp_hf_cmd_list_initital_supported_generic_status_indicators(uint16_t cid){ 380 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "?"); 381 } 382 383 static int hfp_hf_cmd_query_operator_name_format(uint16_t cid){ 384 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "=3,0"); 385 } 386 387 static int hfp_hf_cmd_query_operator_name(uint16_t cid){ 388 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "?"); 389 } 390 391 static int hfp_hf_cmd_trigger_codec_connection_setup(uint16_t cid){ 392 return hfp_hf_send_cmd(cid, HFP_TRIGGER_CODEC_CONNECTION_SETUP); 393 } 394 395 static int hfp_hf_set_microphone_gain_cmd(uint16_t cid, int gain){ 396 return hfp_hf_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 397 } 398 399 static int hfp_hf_set_speaker_gain_cmd(uint16_t cid, int gain){ 400 return hfp_hf_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 401 } 402 403 static int hfp_hf_set_calling_line_notification_cmd(uint16_t cid, uint8_t activate){ 404 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CLIP, activate); 405 } 406 407 static int hfp_hf_set_voice_recognition_notification_cmd(uint16_t cid, uint8_t activate){ 408 return hfp_hf_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate); 409 } 410 411 static int hfp_hf_set_call_waiting_notification_cmd(uint16_t cid, uint8_t activate){ 412 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CALL_WAITING_NOTIFICATION, activate); 413 } 414 415 static int hfp_hf_cmd_confirm_codec(uint16_t cid, uint8_t codec){ 416 return hfp_hf_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 417 } 418 419 static int hfp_hf_cmd_enable_extended_audio_gateway_error_report(uint16_t cid, uint8_t enable){ 420 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR, enable); 421 } 422 423 static int hfp_hf_send_redial_last_number_cmd(uint16_t cid){ 424 return hfp_hf_send_cmd(cid, HFP_REDIAL_LAST_NUMBER); 425 } 426 427 static int hfp_hf_send_chup(uint16_t cid){ 428 return hfp_hf_send_cmd(cid, HFP_HANG_UP_CALL); 429 } 430 431 static int hfp_hf_send_binp(uint16_t cid){ 432 return hfp_hf_send_cmd_with_mark(cid, HFP_PHONE_NUMBER_FOR_VOICE_TAG, "=1"); 433 } 434 435 static int hfp_hf_send_clcc(uint16_t cid){ 436 return hfp_hf_send_cmd(cid, HFP_LIST_CURRENT_CALLS); 437 } 438 439 /* state machines */ 440 441 static int hfp_hf_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 442 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 443 if (hfp_connection->ok_pending) return 0; 444 int done = 1; 445 log_info("hfp_hf_run_for_context_service_level_connection state %d\n", hfp_connection->state); 446 switch (hfp_connection->state){ 447 case HFP_EXCHANGE_SUPPORTED_FEATURES: 448 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_hf_codecs, &hfp_hf_codecs_nr); 449 hfp_connection->state = HFP_W4_EXCHANGE_SUPPORTED_FEATURES; 450 hfp_hf_cmd_exchange_supported_features(hfp_connection->rfcomm_cid); 451 break; 452 case HFP_NOTIFY_ON_CODECS: 453 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 454 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 455 break; 456 case HFP_RETRIEVE_INDICATORS: 457 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 458 hfp_hf_cmd_retrieve_indicators(hfp_connection->rfcomm_cid); 459 break; 460 case HFP_RETRIEVE_INDICATORS_STATUS: 461 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 462 hfp_hf_cmd_retrieve_indicators_status(hfp_connection->rfcomm_cid); 463 break; 464 case HFP_ENABLE_INDICATORS_STATUS_UPDATE: 465 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 466 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, 1); 467 break; 468 case HFP_RETRIEVE_CAN_HOLD_CALL: 469 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 470 hfp_hf_cmd_retrieve_can_hold_call(hfp_connection->rfcomm_cid); 471 break; 472 case HFP_LIST_GENERIC_STATUS_INDICATORS: 473 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 474 hfp_hf_cmd_list_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 475 break; 476 case HFP_RETRIEVE_GENERIC_STATUS_INDICATORS: 477 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 478 hfp_hf_cmd_retrieve_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 479 break; 480 case HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 481 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 482 hfp_hf_cmd_list_initital_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 483 break; 484 default: 485 done = 0; 486 break; 487 } 488 return done; 489 } 490 491 492 static int hfp_hf_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 493 if (hfp_connection->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 494 if (hfp_connection->ok_pending){ 495 return 0; 496 } 497 int done = 0; 498 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 499 hfp_connection->ok_pending = 1; 500 done = 1; 501 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, hfp_connection->enable_status_update_for_ag_indicators); 502 return done; 503 }; 504 if (hfp_connection->change_status_update_for_individual_ag_indicators){ 505 hfp_connection->ok_pending = 1; 506 done = 1; 507 hfp_hf_cmd_activate_status_update_for_ag_indicator(hfp_connection->rfcomm_cid, 508 hfp_connection->ag_indicators_status_update_bitmap, 509 hfp_connection->ag_indicators_nr); 510 return done; 511 } 512 513 switch (hfp_connection->hf_query_operator_state){ 514 case HFP_HF_QUERY_OPERATOR_SET_FORMAT: 515 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK; 516 hfp_connection->ok_pending = 1; 517 hfp_hf_cmd_query_operator_name_format(hfp_connection->rfcomm_cid); 518 return 1; 519 case HFP_HF_QUERY_OPERATOR_SEND_QUERY: 520 hfp_connection->hf_query_operator_state = HPF_HF_QUERY_OPERATOR_W4_RESULT; 521 hfp_connection->ok_pending = 1; 522 hfp_hf_cmd_query_operator_name(hfp_connection->rfcomm_cid); 523 return 1; 524 default: 525 break; 526 } 527 528 if (hfp_connection->enable_extended_audio_gateway_error_report){ 529 hfp_connection->ok_pending = 1; 530 done = 1; 531 hfp_hf_cmd_enable_extended_audio_gateway_error_report(hfp_connection->rfcomm_cid, hfp_connection->enable_extended_audio_gateway_error_report); 532 return done; 533 } 534 535 return done; 536 } 537 538 static int hfp_hf_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 539 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 540 return 0; 541 } 542 int done = 0; 543 544 if (hfp_connection->ok_pending == 1){ 545 return 0; 546 } 547 // voice recognition activated from AG 548 if (hfp_connection->command == HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION){ 549 switch(hfp_connection->vra_state_requested){ 550 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 551 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 552 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 553 // ignore AG command, continue to wait for OK 554 return 0; 555 556 default: 557 if (hfp_connection->ag_vra_msg_length > 0){ 558 hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection); 559 hfp_connection->ag_vra_msg_length = 0; 560 break; 561 } 562 switch(hfp_connection->ag_vra_state){ 563 case HFP_VOICE_RECOGNITION_STATE_AG_READY: 564 switch (hfp_connection->ag_vra_status){ 565 case 0: 566 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 567 break; 568 case 1: 569 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 570 break; 571 case 2: 572 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 573 break; 574 default: 575 break; 576 } 577 break; 578 default: 579 // state messages from AG 580 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 581 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 582 break; 583 } 584 break; 585 } 586 hfp_connection->command = HFP_CMD_NONE; 587 } 588 589 590 switch (hfp_connection->vra_state_requested){ 591 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 592 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 0); 593 if (done != 0){ 594 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 595 hfp_connection->ok_pending = 1; 596 } 597 return 1; 598 599 600 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 601 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 1); 602 if (done != 0){ 603 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 604 hfp_connection->ok_pending = 1; 605 return 1; 606 } 607 break; 608 609 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 610 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 2); 611 if (done != 0){ 612 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 613 hfp_connection->ok_pending = 1; 614 return 1; 615 } 616 break; 617 618 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 619 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 620 hfp_connection->vra_state_requested = hfp_connection->vra_state; 621 hfp_connection->activate_voice_recognition = false; 622 if (hfp_connection->activate_voice_recognition){ 623 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 624 hfp_hf_activate_voice_recognition(hfp_connection->acl_handle); 625 } else { 626 hfp_emit_voice_recognition_disabled(hfp_connection, ERROR_CODE_SUCCESS); 627 } 628 break; 629 630 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 631 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 632 hfp_connection->vra_state_requested = hfp_connection->vra_state; 633 hfp_connection->activate_voice_recognition = false; 634 if (hfp_connection->deactivate_voice_recognition){ 635 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 636 } else { 637 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 638 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 639 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 640 } else { 641 // postpone VRA event to simplify application logic 642 hfp_connection->emit_vra_enabled_after_audio_established = true; 643 } 644 } 645 break; 646 647 648 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 649 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 650 hfp_connection->vra_state_requested = hfp_connection->vra_state; 651 hfp_connection->activate_voice_recognition = false; 652 if (hfp_connection->deactivate_voice_recognition){ 653 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 654 } else { 655 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 656 } 657 break; 658 659 default: 660 break; 661 } 662 return done; 663 } 664 665 666 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 667 if (hfp_connection->ok_pending) return 0; 668 669 if (hfp_connection->trigger_codec_exchange){ 670 hfp_connection->trigger_codec_exchange = 0; 671 672 hfp_connection->ok_pending = 1; 673 hfp_hf_cmd_trigger_codec_connection_setup(hfp_connection->rfcomm_cid); 674 return 1; 675 } 676 677 if (hfp_connection->hf_send_codec_confirm){ 678 hfp_connection->hf_send_codec_confirm = false; 679 680 hfp_connection->ok_pending = 1; 681 hfp_hf_cmd_confirm_codec(hfp_connection->rfcomm_cid, hfp_connection->codec_confirmed); 682 return 1; 683 } 684 685 if (hfp_connection->hf_send_supported_codecs){ 686 hfp_connection->hf_send_supported_codecs = false; 687 688 hfp_connection->ok_pending = 1; 689 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 690 return 1; 691 } 692 693 return 0; 694 } 695 696 static int hfp_hf_run_for_audio_connection(hfp_connection_t * hfp_connection){ 697 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 698 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 699 700 if (hfp_connection->release_audio_connection){ 701 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 702 hfp_connection->release_audio_connection = 0; 703 gap_disconnect(hfp_connection->sco_handle); 704 return 1; 705 } 706 707 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 708 709 // run codecs exchange 710 int done = codecs_exchange_state_machine(hfp_connection); 711 if (done) return 1; 712 713 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 714 if (hci_can_send_command_packet_now() == false) return 0; 715 if (hfp_connection->establish_audio_connection){ 716 hfp_connection->state = HFP_W4_SCO_CONNECTED; 717 hfp_connection->establish_audio_connection = 0; 718 hfp_setup_synchronous_connection(hfp_connection); 719 return 1; 720 } 721 return 0; 722 } 723 724 725 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 726 727 if (hfp_connection->ok_pending) return 0; 728 729 if (hfp_connection->hf_answer_incoming_call){ 730 hfp_hf_cmd_ata(hfp_connection->rfcomm_cid); 731 hfp_connection->hf_answer_incoming_call = 0; 732 return 1; 733 } 734 return 0; 735 } 736 737 static void hfp_hf_run_for_context(hfp_connection_t * hfp_connection){ 738 739 btstack_assert(hfp_connection != NULL); 740 btstack_assert(hfp_connection->local_role == HFP_ROLE_HF); 741 742 // during SDP query, RFCOMM CID is not set 743 if (hfp_connection->rfcomm_cid == 0) return; 744 745 // emit postponed VRA event 746 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->emit_vra_enabled_after_audio_established){ 747 hfp_connection->emit_vra_enabled_after_audio_established = false; 748 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 749 } 750 751 // assert command could be sent 752 if (hci_can_send_command_packet_now() == 0) return; 753 754 #ifdef ENABLE_CC256X_ASSISTED_HFP 755 // WBS Disassociate 756 if (hfp_connection->cc256x_send_wbs_disassociate){ 757 hfp_connection->cc256x_send_wbs_disassociate = false; 758 hci_send_cmd(&hci_ti_wbs_disassociate); 759 return; 760 } 761 // Write Codec Config 762 if (hfp_connection->cc256x_send_write_codec_config){ 763 hfp_connection->cc256x_send_write_codec_config = false; 764 hfp_cc256x_write_codec_config(hfp_connection); 765 return; 766 } 767 // WBS Associate 768 if (hfp_connection->cc256x_send_wbs_associate){ 769 hfp_connection->cc256x_send_wbs_associate = false; 770 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 771 return; 772 } 773 #endif 774 #ifdef ENABLE_BCM_PCM_WBS 775 // Enable WBS 776 if (hfp_connection->bcm_send_enable_wbs){ 777 hfp_connection->bcm_send_enable_wbs = false; 778 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 779 return; 780 } 781 // Write I2S/PCM params 782 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 783 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 784 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 785 return; 786 } 787 // Disable WBS 788 if (hfp_connection->bcm_send_disable_wbs){ 789 hfp_connection->bcm_send_disable_wbs = false; 790 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 791 return; 792 } 793 #endif 794 #ifdef ENABLE_RTK_PCM_WBS 795 if (hfp_connection->rtk_send_sco_config){ 796 hfp_connection->rtk_send_sco_config = false; 797 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){ 798 log_info("RTK SCO: 16k + mSBC"); 799 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x00, 0x00, 0x41); 800 } else { 801 log_info("RTK SCO: 16k + CVSD"); 802 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x0c, 0x00, 0x01); 803 } 804 return; 805 } 806 #endif 807 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 808 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 809 hfp_finalize_connection_context(hfp_connection); 810 return; 811 } 812 #endif 813 814 if (hfp_connection->accept_sco){ 815 bool incoming_eSCO = hfp_connection->accept_sco == 2; 816 hfp_connection->accept_sco = 0; 817 // notify about codec selection if not done already 818 if (hfp_connection->negotiated_codec == 0){ 819 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 820 } 821 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 822 return; 823 } 824 825 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 826 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 827 return; 828 } 829 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection); 830 if (!done){ 831 done = hfp_hf_run_for_context_service_level_connection_queries(hfp_connection); 832 } 833 if (!done){ 834 done = hfp_hf_run_for_audio_connection(hfp_connection); 835 } 836 if (!done){ 837 done = hfp_hf_voice_recognition_state_machine(hfp_connection); 838 } 839 if (!done){ 840 done = call_setup_state_machine(hfp_connection); 841 } 842 843 // don't send a new command while ok still pending or SLC is not established 844 if (hfp_connection->ok_pending || (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED)){ 845 return; 846 } 847 848 if (hfp_connection->send_microphone_gain){ 849 hfp_connection->send_microphone_gain = 0; 850 hfp_connection->ok_pending = 1; 851 hfp_hf_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 852 return; 853 } 854 855 if (hfp_connection->send_speaker_gain){ 856 hfp_connection->send_speaker_gain = 0; 857 hfp_connection->ok_pending = 1; 858 hfp_hf_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 859 return; 860 } 861 862 if (hfp_connection->hf_deactivate_calling_line_notification){ 863 hfp_connection->hf_deactivate_calling_line_notification = 0; 864 hfp_connection->ok_pending = 1; 865 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 0); 866 return; 867 } 868 869 if (hfp_connection->hf_activate_calling_line_notification){ 870 hfp_connection->hf_activate_calling_line_notification = 0; 871 hfp_connection->ok_pending = 1; 872 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 1); 873 return; 874 } 875 876 if (hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction){ 877 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 0; 878 hfp_connection->response_pending_for_command = HFP_CMD_TURN_OFF_EC_AND_NR; 879 hfp_connection->ok_pending = 1; 880 hfp_hf_send_cmd_with_int(hfp_connection->rfcomm_cid, HFP_TURN_OFF_EC_AND_NR, 0); 881 return; 882 } 883 884 if (hfp_connection->hf_deactivate_call_waiting_notification){ 885 hfp_connection->hf_deactivate_call_waiting_notification = 0; 886 hfp_connection->ok_pending = 1; 887 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 0); 888 return; 889 } 890 891 if (hfp_connection->hf_activate_call_waiting_notification){ 892 hfp_connection->hf_activate_call_waiting_notification = 0; 893 hfp_connection->ok_pending = 1; 894 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 1); 895 return; 896 } 897 898 if (hfp_connection->hf_initiate_outgoing_call){ 899 hfp_connection->hf_initiate_outgoing_call = 0; 900 hfp_connection->ok_pending = 1; 901 hfp_hf_initiate_outgoing_call_cmd(hfp_connection->rfcomm_cid); 902 return; 903 } 904 905 if (hfp_connection->hf_initiate_memory_dialing){ 906 hfp_connection->hf_initiate_memory_dialing = 0; 907 hfp_connection->ok_pending = 1; 908 hfp_hf_send_memory_dial_cmd(hfp_connection->rfcomm_cid, hfp_connection->memory_id); 909 return; 910 } 911 912 if (hfp_connection->hf_initiate_redial_last_number){ 913 hfp_connection->hf_initiate_redial_last_number = 0; 914 hfp_connection->ok_pending = 1; 915 hfp_hf_send_redial_last_number_cmd(hfp_connection->rfcomm_cid); 916 return; 917 } 918 919 if (hfp_connection->hf_send_chup){ 920 hfp_connection->hf_send_chup = 0; 921 hfp_connection->ok_pending = 1; 922 hfp_hf_send_chup(hfp_connection->rfcomm_cid); 923 return; 924 } 925 926 if (hfp_connection->hf_send_chld_0){ 927 hfp_connection->hf_send_chld_0 = 0; 928 hfp_connection->ok_pending = 1; 929 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 0); 930 return; 931 } 932 933 if (hfp_connection->hf_send_chld_1){ 934 hfp_connection->hf_send_chld_1 = 0; 935 hfp_connection->ok_pending = 1; 936 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 1); 937 return; 938 } 939 940 if (hfp_connection->hf_send_chld_2){ 941 hfp_connection->hf_send_chld_2 = 0; 942 hfp_connection->ok_pending = 1; 943 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 2); 944 return; 945 } 946 947 if (hfp_connection->hf_send_chld_3){ 948 hfp_connection->hf_send_chld_3 = 0; 949 hfp_connection->ok_pending = 1; 950 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 3); 951 return; 952 } 953 954 if (hfp_connection->hf_send_chld_4){ 955 hfp_connection->hf_send_chld_4 = 0; 956 hfp_connection->ok_pending = 1; 957 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 4); 958 return; 959 } 960 961 if (hfp_connection->hf_send_chld_x){ 962 hfp_connection->hf_send_chld_x = 0; 963 hfp_connection->ok_pending = 1; 964 hfp_hf_send_chld(hfp_connection->rfcomm_cid, hfp_connection->hf_send_chld_x_index); 965 return; 966 } 967 968 if (hfp_connection->hf_send_dtmf_code){ 969 char code = hfp_connection->hf_send_dtmf_code; 970 hfp_connection->hf_send_dtmf_code = 0; 971 hfp_connection->ok_pending = 1; 972 hfp_hf_send_dtmf(hfp_connection->rfcomm_cid, code); 973 // notify client that dtmf was sent 974 char buffer[2]; 975 buffer[0] = code; 976 buffer[1] = 0; 977 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 978 return; 979 } 980 981 if (hfp_connection->hf_send_binp){ 982 hfp_connection->hf_send_binp = 0; 983 hfp_connection->ok_pending = 1; 984 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 985 return; 986 } 987 988 if (hfp_connection->hf_send_clcc){ 989 hfp_connection->hf_send_clcc = 0; 990 hfp_connection->ok_pending = 1; 991 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 992 return; 993 } 994 995 if (hfp_connection->hf_send_rrh){ 996 hfp_connection->hf_send_rrh = 0; 997 char buffer[20]; 998 switch (hfp_connection->hf_send_rrh_command){ 999 case '?': 1000 snprintf(buffer, sizeof(buffer), "AT%s?\r", 1001 HFP_RESPONSE_AND_HOLD); 1002 buffer[sizeof(buffer) - 1] = 0; 1003 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1004 return; 1005 case '0': 1006 case '1': 1007 case '2': 1008 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", 1009 HFP_RESPONSE_AND_HOLD, 1010 hfp_connection->hf_send_rrh_command); 1011 buffer[sizeof(buffer) - 1] = 0; 1012 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1013 return; 1014 default: 1015 break; 1016 } 1017 return; 1018 } 1019 1020 if (hfp_connection->hf_send_cnum){ 1021 hfp_connection->hf_send_cnum = 0; 1022 char buffer[20]; 1023 snprintf(buffer, sizeof(buffer), "AT%s\r", 1024 HFP_SUBSCRIBER_NUMBER_INFORMATION); 1025 buffer[sizeof(buffer) - 1] = 0; 1026 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1027 return; 1028 } 1029 1030 // update HF indicators 1031 if (hfp_connection->generic_status_update_bitmap){ 1032 int i; 1033 for (i=0; i < hfp_hf_indicators_nr; i++){ 1034 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 1035 if (hfp_connection->generic_status_indicators[i].state){ 1036 hfp_connection->ok_pending = 1; 1037 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 1038 char buffer[30]; 1039 snprintf(buffer, sizeof(buffer), "AT%s=%u,%u\r", 1040 HFP_TRANSFER_HF_INDICATOR_STATUS, 1041 hfp_hf_indicators[i], 1042 (unsigned int)hfp_hf_indicators_value[i]); 1043 buffer[sizeof(buffer) - 1] = 0; 1044 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1045 } else { 1046 log_info("Not sending HF indicator %u as it is disabled", hfp_hf_indicators[i]); 1047 } 1048 return; 1049 } 1050 } 1051 } 1052 1053 if (hfp_connection->send_custom_message != NULL){ 1054 const char * message = hfp_connection->send_custom_message; 1055 hfp_connection->send_custom_message = NULL; 1056 hfp_connection->ok_pending = 1; 1057 hfp_connection->response_pending_for_command = HFP_CMD_CUSTOM_MESSAGE; 1058 send_str_over_rfcomm(hfp_connection->rfcomm_cid, message); 1059 return; 1060 } 1061 1062 if (done) return; 1063 // deal with disconnect 1064 switch (hfp_connection->state){ 1065 case HFP_W2_DISCONNECT_RFCOMM: 1066 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1067 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1068 break; 1069 1070 default: 1071 break; 1072 } 1073 } 1074 1075 static void hfp_hf_slc_established(hfp_connection_t * hfp_connection){ 1076 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 1077 1078 hfp_emit_slc_connection_event(hfp_connection->local_role, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 1079 1080 uint8_t i; 1081 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1082 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1083 } 1084 1085 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1086 hfp_connection->ag_indicators[i].status_changed = 0; 1087 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1088 } 1089 1090 // restore volume settings 1091 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 1092 hfp_connection->send_speaker_gain = 1; 1093 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 1094 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 1095 hfp_connection->send_microphone_gain = 1; 1096 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 1097 // enable all indicators 1098 for (i=0; i < hfp_hf_indicators_nr; i++){ 1099 hfp_connection->generic_status_indicators[i].uuid = hfp_hf_indicators[i]; 1100 hfp_connection->generic_status_indicators[i].state = 1; 1101 } 1102 } 1103 1104 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 1105 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_hf_codecs_nr, hfp_hf_codecs)){ 1106 // Codec supported, confirm 1107 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1108 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1109 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 1110 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 1111 1112 hfp_connection->hf_send_codec_confirm = true; 1113 } else { 1114 // Codec not supported, send supported codecs 1115 hfp_connection->codec_confirmed = 0; 1116 hfp_connection->suggested_codec = 0; 1117 hfp_connection->negotiated_codec = 0; 1118 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1119 1120 hfp_connection->hf_send_supported_codecs = true; 1121 } 1122 } 1123 1124 static bool hfp_hf_switch_on_ok_pending(hfp_connection_t *hfp_connection, uint8_t status){ 1125 bool event_emited = true; 1126 1127 // cache state and reset 1128 hfp_command_t response_pending_for_command = hfp_connection->response_pending_for_command; 1129 hfp_connection->response_pending_for_command = HFP_CMD_NONE; 1130 hfp_connection->command = HFP_CMD_NONE; 1131 hfp_connection->ok_pending = 0; 1132 1133 switch (response_pending_for_command){ 1134 case HFP_CMD_TURN_OFF_EC_AND_NR: 1135 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 1136 break; 1137 case HFP_CMD_CUSTOM_MESSAGE: 1138 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, status); 1139 break; 1140 default: 1141 event_emited = false; 1142 1143 switch (hfp_connection->state){ 1144 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 1145 if (has_codec_negotiation_feature(hfp_connection)){ 1146 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 1147 break; 1148 } 1149 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1150 break; 1151 1152 case HFP_W4_NOTIFY_ON_CODECS: 1153 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1154 break; 1155 1156 case HFP_W4_RETRIEVE_INDICATORS: 1157 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 1158 break; 1159 1160 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 1161 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 1162 break; 1163 1164 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 1165 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 1166 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 1167 break; 1168 } 1169 if (has_hf_indicators_feature(hfp_connection)){ 1170 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1171 break; 1172 } 1173 hfp_hf_slc_established(hfp_connection); 1174 break; 1175 1176 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 1177 if (has_hf_indicators_feature(hfp_connection)){ 1178 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1179 break; 1180 } 1181 hfp_hf_slc_established(hfp_connection); 1182 break; 1183 1184 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 1185 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 1186 break; 1187 1188 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 1189 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 1190 break; 1191 1192 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 1193 hfp_hf_slc_established(hfp_connection); 1194 break; 1195 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1196 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 1197 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 1198 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_SUCCESS); 1199 break; 1200 } 1201 1202 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 1203 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 1204 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_SUCCESS); 1205 break; 1206 } 1207 1208 switch (hfp_connection->hf_query_operator_state){ 1209 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 1210 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1211 break; 1212 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 1213 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 1214 hfp_emit_network_operator_event(hfp_connection); 1215 break; 1216 default: 1217 break; 1218 } 1219 1220 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1221 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1222 break; 1223 } 1224 1225 switch (hfp_connection->codecs_state){ 1226 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1227 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1228 break; 1229 case HFP_CODECS_HF_CONFIRMED_CODEC: 1230 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1231 break; 1232 default: 1233 break; 1234 } 1235 hfp_hf_voice_recognition_state_machine(hfp_connection); 1236 break; 1237 case HFP_AUDIO_CONNECTION_ESTABLISHED: 1238 hfp_hf_voice_recognition_state_machine(hfp_connection); 1239 break; 1240 default: 1241 break; 1242 } 1243 break; 1244 } 1245 1246 return event_emited; 1247 } 1248 1249 static bool hfp_is_ringing(hfp_callsetup_status_t callsetup_status){ 1250 switch (callsetup_status){ 1251 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1252 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1253 return true; 1254 default: 1255 return false; 1256 } 1257 } 1258 1259 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1260 uint16_t i; 1261 1262 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1263 if (hfp_connection->ag_indicators[i].status_changed) { 1264 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1265 hfp_callsetup_status_t new_hf_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1266 bool ringing_old = hfp_is_ringing(hfp_hf_callsetup_status); 1267 bool ringing_new = hfp_is_ringing(new_hf_callsetup_status); 1268 if (ringing_old != ringing_new){ 1269 if (ringing_new){ 1270 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGING); 1271 } else { 1272 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGING); 1273 } 1274 } 1275 hfp_hf_callsetup_status = new_hf_callsetup_status; 1276 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1277 hfp_hf_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1278 // avoid set but not used warning 1279 (void) hfp_hf_callheld_status; 1280 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1281 hfp_call_status_t new_hf_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1282 if (hfp_hf_call_status != new_hf_call_status){ 1283 if (new_hf_call_status == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 1284 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1285 } else { 1286 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1287 } 1288 } 1289 hfp_hf_call_status = new_hf_call_status; 1290 } 1291 hfp_connection->ag_indicators[i].status_changed = 0; 1292 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1293 break; 1294 } 1295 } 1296 } 1297 1298 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1299 int value; 1300 int i; 1301 bool event_emited; 1302 1303 // last argument is still in line_buffer 1304 1305 switch (hfp_connection->command){ 1306 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1307 hfp_connection->command = HFP_CMD_NONE; 1308 hfp_hf_emit_subscriber_information(hfp_connection, 0); 1309 break; 1310 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1311 hfp_connection->command = HFP_CMD_NONE; 1312 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1313 break; 1314 case HFP_CMD_LIST_CURRENT_CALLS: 1315 hfp_connection->command = HFP_CMD_NONE; 1316 hfp_hf_emit_enhanced_call_status(hfp_connection); 1317 break; 1318 case HFP_CMD_SET_SPEAKER_GAIN: 1319 hfp_connection->command = HFP_CMD_NONE; 1320 value = btstack_atoi((char*)hfp_connection->line_buffer); 1321 hfp_hf_speaker_gain = value; 1322 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1323 break; 1324 case HFP_CMD_SET_MICROPHONE_GAIN: 1325 hfp_connection->command = HFP_CMD_NONE; 1326 value = btstack_atoi((char*)hfp_connection->line_buffer); 1327 hfp_hf_microphone_gain = value; 1328 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1329 break; 1330 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1331 hfp_connection->command = HFP_CMD_NONE; 1332 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1333 break; 1334 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1335 hfp_connection->command = HFP_CMD_NONE; 1336 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION); 1337 break; 1338 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1339 hfp_connection->command = HFP_CMD_NONE; 1340 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION); 1341 break; 1342 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1343 hfp_connection->command = HFP_CMD_NONE; 1344 hfp_connection->ok_pending = 0; 1345 hfp_connection->extended_audio_gateway_error = 0; 1346 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1347 break; 1348 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 1349 break; 1350 case HFP_CMD_ERROR: 1351 switch (hfp_connection->state){ 1352 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1353 switch (hfp_connection->codecs_state){ 1354 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1355 hfp_reset_context_flags(hfp_connection); 1356 hfp_emit_sco_connection_established(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 1357 hfp_connection->negotiated_codec, 0, 0); 1358 return; 1359 default: 1360 break; 1361 } 1362 break; 1363 default: 1364 break; 1365 } 1366 1367 // handle error response for voice activation (HF initiated) 1368 switch(hfp_connection->vra_state_requested){ 1369 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1370 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1371 break; 1372 default: 1373 if (hfp_connection->vra_state_requested == hfp_connection->vra_state){ 1374 break; 1375 } 1376 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1377 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1378 hfp_reset_context_flags(hfp_connection); 1379 return; 1380 } 1381 event_emited = hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1382 if (!event_emited){ 1383 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_UNSPECIFIED_ERROR); 1384 } 1385 hfp_reset_context_flags(hfp_connection); 1386 break; 1387 1388 case HFP_CMD_OK: 1389 hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_SUCCESS); 1390 break; 1391 case HFP_CMD_RING: 1392 hfp_connection->command = HFP_CMD_NONE; 1393 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1394 break; 1395 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1396 hfp_connection->command = HFP_CMD_NONE; 1397 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1398 break; 1399 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1400 hfp_connection->command = HFP_CMD_NONE; 1401 // report status after SLC established 1402 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 1403 break; 1404 } 1405 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1406 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1407 } 1408 break; 1409 case HFP_CMD_AG_SUGGESTED_CODEC: 1410 hfp_connection->command = HFP_CMD_NONE; 1411 hfp_hf_handle_suggested_codec(hfp_connection); 1412 break; 1413 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1414 hfp_emit_event(hfp_connection, HFP_SUBEVENT_IN_BAND_RING_TONE, get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE)); 1415 default: 1416 break; 1417 } 1418 } 1419 1420 static int hfp_parser_is_end_of_line(uint8_t byte){ 1421 return (byte == '\n') || (byte == '\r'); 1422 } 1423 1424 static void hfp_hf_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 1425 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1426 if (size < 1) return; 1427 1428 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1429 #ifdef ENABLE_HFP_AT_MESSAGES 1430 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1431 #endif 1432 1433 // process messages byte-wise 1434 uint8_t pos; 1435 for (pos = 0; pos < size; pos++){ 1436 hfp_parse(hfp_connection, packet[pos], 1); 1437 // parse until end of line "\r" or "\n" 1438 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1439 hfp_hf_handle_rfcomm_command(hfp_connection); 1440 } 1441 } 1442 1443 static void hfp_hf_run(void){ 1444 btstack_linked_list_iterator_t it; 1445 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1446 while (btstack_linked_list_iterator_has_next(&it)){ 1447 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1448 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1449 hfp_hf_run_for_context(hfp_connection); 1450 } 1451 } 1452 1453 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1454 hfp_connection_t * hfp_connection; 1455 switch (packet_type){ 1456 case RFCOMM_DATA_PACKET: 1457 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1458 if (!hfp_connection) return; 1459 hfp_hf_handle_rfcomm_data(hfp_connection, packet, size); 1460 hfp_hf_run_for_context(hfp_connection); 1461 return; 1462 case HCI_EVENT_PACKET: 1463 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1464 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1465 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1466 return; 1467 } 1468 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1469 break; 1470 default: 1471 break; 1472 } 1473 hfp_hf_run(); 1474 } 1475 1476 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1477 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1478 hfp_hf_run(); 1479 } 1480 1481 static void hfp_hf_set_defaults(void){ 1482 hfp_hf_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1483 hfp_hf_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1484 hfp_hf_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1485 hfp_hf_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1486 hfp_hf_codecs_nr = 0; 1487 hfp_hf_speaker_gain = 9; 1488 hfp_hf_microphone_gain = 9; 1489 hfp_hf_indicators_nr = 0; 1490 } 1491 1492 uint8_t hfp_hf_set_default_microphone_gain(uint8_t gain){ 1493 if (gain > 15){ 1494 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 1495 } 1496 hfp_hf_microphone_gain = gain; 1497 return ERROR_CODE_SUCCESS; 1498 } 1499 1500 uint8_t hfp_hf_set_default_speaker_gain(uint8_t gain){ 1501 if (gain > 15){ 1502 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 1503 } 1504 hfp_hf_speaker_gain = gain; 1505 return ERROR_CODE_SUCCESS; 1506 } 1507 1508 uint8_t hfp_hf_init(uint8_t rfcomm_channel_nr){ 1509 uint8_t status = rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1510 if (status != ERROR_CODE_SUCCESS){ 1511 return status; 1512 } 1513 1514 hfp_init(); 1515 hfp_hf_set_defaults(); 1516 1517 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1518 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1519 1520 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1521 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1522 return ERROR_CODE_SUCCESS; 1523 } 1524 1525 void hfp_hf_deinit(void){ 1526 hfp_deinit(); 1527 hfp_hf_set_defaults(); 1528 1529 hfp_hf_callback = NULL; 1530 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1531 (void) memset(hfp_hf_phone_number, 0, sizeof(hfp_hf_phone_number)); 1532 } 1533 1534 void hfp_hf_init_codecs(int codecs_nr, const uint8_t * codecs){ 1535 btstack_assert(codecs_nr <= HFP_MAX_NUM_CODECS); 1536 1537 hfp_hf_codecs_nr = codecs_nr; 1538 int i; 1539 for (i=0; i<codecs_nr; i++){ 1540 hfp_hf_codecs[i] = codecs[i]; 1541 } 1542 } 1543 1544 void hfp_hf_init_supported_features(uint32_t supported_features){ 1545 hfp_hf_supported_features = supported_features; 1546 } 1547 1548 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1549 btstack_assert(hfp_hf_indicators_nr < HFP_MAX_NUM_INDICATORS); 1550 1551 hfp_hf_indicators_nr = indicators_nr; 1552 int i; 1553 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 1554 hfp_hf_indicators[i] = (uint8_t) indicators[i]; 1555 } 1556 } 1557 1558 uint8_t hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1559 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1560 } 1561 1562 uint8_t hfp_hf_release_service_level_connection(hci_con_handle_t acl_handle){ 1563 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1564 if (!hfp_connection){ 1565 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1566 } 1567 hfp_trigger_release_service_level_connection(hfp_connection); 1568 hfp_hf_run_for_context(hfp_connection); 1569 return ERROR_CODE_SUCCESS; 1570 } 1571 1572 static uint8_t hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1573 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1574 if (!hfp_connection) { 1575 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1576 } 1577 hfp_connection->enable_status_update_for_ag_indicators = enable; 1578 hfp_hf_run_for_context(hfp_connection); 1579 return ERROR_CODE_SUCCESS; 1580 } 1581 1582 uint8_t hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1583 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1584 } 1585 1586 uint8_t hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1587 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1588 } 1589 1590 // TODO: returned ERROR - wrong format 1591 uint8_t hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1592 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1593 if (!hfp_connection) { 1594 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1595 } 1596 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1597 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1598 hfp_hf_run_for_context(hfp_connection); 1599 return ERROR_CODE_SUCCESS; 1600 } 1601 1602 uint8_t hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1603 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1604 if (!hfp_connection) { 1605 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1606 } 1607 1608 switch (hfp_connection->hf_query_operator_state){ 1609 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1610 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1611 break; 1612 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1613 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1614 break; 1615 default: 1616 return ERROR_CODE_COMMAND_DISALLOWED; 1617 } 1618 hfp_hf_run_for_context(hfp_connection); 1619 return ERROR_CODE_SUCCESS; 1620 } 1621 1622 static uint8_t hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1623 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1624 if (!hfp_connection) { 1625 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1626 } 1627 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1628 hfp_hf_run_for_context(hfp_connection); 1629 return ERROR_CODE_SUCCESS; 1630 } 1631 1632 1633 uint8_t hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1634 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1635 } 1636 1637 uint8_t hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1638 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1639 } 1640 1641 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1642 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_hf_supported_features & (1 << HFP_HFSF_ESCO_S4)); 1643 } 1644 1645 uint8_t hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1646 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1647 if (!hfp_connection) { 1648 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1649 } 1650 1651 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1652 return ERROR_CODE_COMMAND_DISALLOWED; 1653 } 1654 1655 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 1656 return ERROR_CODE_COMMAND_DISALLOWED; 1657 } 1658 if (has_codec_negotiation_feature(hfp_connection)) { 1659 switch (hfp_connection->codecs_state) { 1660 case HFP_CODECS_W4_AG_COMMON_CODEC: 1661 break; 1662 case HFP_CODECS_EXCHANGED: 1663 hfp_connection->trigger_codec_exchange = 1; 1664 break; 1665 default: 1666 hfp_connection->codec_confirmed = 0; 1667 hfp_connection->suggested_codec = 0; 1668 hfp_connection->negotiated_codec = 0; 1669 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1670 hfp_connection->trigger_codec_exchange = 1; 1671 break; 1672 } 1673 } else { 1674 log_info("no codec negotiation feature, use CVSD"); 1675 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1676 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1677 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1678 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1679 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1680 hfp_connection->establish_audio_connection = 1; 1681 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1682 } 1683 1684 hfp_hf_run_for_context(hfp_connection); 1685 return ERROR_CODE_SUCCESS; 1686 } 1687 1688 uint8_t hfp_hf_release_audio_connection(hci_con_handle_t acl_handle){ 1689 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1690 if (!hfp_connection) { 1691 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1692 } 1693 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 1694 return ERROR_CODE_COMMAND_DISALLOWED; 1695 } 1696 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 1697 if (status == ERROR_CODE_SUCCESS){ 1698 hfp_hf_run_for_context(hfp_connection); 1699 } 1700 return ERROR_CODE_SUCCESS; 1701 } 1702 1703 uint8_t hfp_hf_answer_incoming_call(hci_con_handle_t acl_handle){ 1704 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1705 if (!hfp_connection) { 1706 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1707 } 1708 1709 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1710 hfp_connection->hf_answer_incoming_call = 1; 1711 hfp_hf_run_for_context(hfp_connection); 1712 } else { 1713 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_hf_callsetup_status); 1714 return ERROR_CODE_COMMAND_DISALLOWED; 1715 } 1716 return ERROR_CODE_SUCCESS; 1717 } 1718 1719 uint8_t hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1720 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1721 if (!hfp_connection) { 1722 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1723 } 1724 hfp_connection->hf_send_chup = 1; 1725 hfp_hf_run_for_context(hfp_connection); 1726 return ERROR_CODE_SUCCESS; 1727 } 1728 1729 uint8_t hfp_hf_reject_incoming_call(hci_con_handle_t acl_handle){ 1730 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1731 if (!hfp_connection) { 1732 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1733 } 1734 1735 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1736 hfp_connection->hf_send_chup = 1; 1737 hfp_hf_run_for_context(hfp_connection); 1738 } 1739 return ERROR_CODE_SUCCESS; 1740 } 1741 1742 uint8_t hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1743 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1744 if (!hfp_connection) { 1745 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1746 } 1747 1748 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1749 hfp_connection->hf_send_chld_0 = 1; 1750 hfp_hf_run_for_context(hfp_connection); 1751 } 1752 return ERROR_CODE_SUCCESS; 1753 } 1754 1755 uint8_t hfp_hf_terminate_held_calls(hci_con_handle_t acl_handle){ 1756 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1757 if (!hfp_connection) { 1758 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1759 } 1760 1761 hfp_connection->hf_send_chld_0 = 1; 1762 hfp_hf_run_for_context(hfp_connection); 1763 1764 return ERROR_CODE_SUCCESS; 1765 } 1766 1767 uint8_t hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1768 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1769 if (!hfp_connection) { 1770 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1771 } 1772 1773 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1774 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1775 hfp_connection->hf_send_chld_1 = 1; 1776 hfp_hf_run_for_context(hfp_connection); 1777 } 1778 return ERROR_CODE_SUCCESS; 1779 } 1780 1781 uint8_t hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1782 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1783 if (!hfp_connection) { 1784 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1785 } 1786 1787 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1788 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1789 hfp_connection->hf_send_chld_2 = 1; 1790 hfp_hf_run_for_context(hfp_connection); 1791 } 1792 return ERROR_CODE_SUCCESS; 1793 } 1794 1795 uint8_t hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1796 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1797 if (!hfp_connection) { 1798 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1799 } 1800 1801 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1802 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1803 hfp_connection->hf_send_chld_3 = 1; 1804 hfp_hf_run_for_context(hfp_connection); 1805 } 1806 return ERROR_CODE_SUCCESS; 1807 } 1808 1809 uint8_t hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1810 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1811 if (!hfp_connection) { 1812 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1813 } 1814 1815 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1816 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1817 hfp_connection->hf_send_chld_4 = 1; 1818 hfp_hf_run_for_context(hfp_connection); 1819 } 1820 return ERROR_CODE_SUCCESS; 1821 } 1822 1823 uint8_t hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1824 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1825 if (!hfp_connection) { 1826 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1827 } 1828 1829 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1830 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1831 hfp_connection->hf_send_chld_x = 1; 1832 hfp_connection->hf_send_chld_x_index = 10 + index; 1833 hfp_hf_run_for_context(hfp_connection); 1834 } 1835 return ERROR_CODE_SUCCESS; 1836 } 1837 1838 uint8_t hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 1839 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1840 if (!hfp_connection) { 1841 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1842 } 1843 1844 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1845 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1846 hfp_connection->hf_send_chld_x = 1; 1847 hfp_connection->hf_send_chld_x_index = 20 + index; 1848 hfp_hf_run_for_context(hfp_connection); 1849 } 1850 return ERROR_CODE_SUCCESS; 1851 } 1852 1853 uint8_t hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 1854 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1855 if (!hfp_connection) { 1856 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1857 } 1858 1859 hfp_connection->hf_initiate_outgoing_call = 1; 1860 snprintf(hfp_hf_phone_number, sizeof(hfp_hf_phone_number), "%s", number); 1861 hfp_hf_run_for_context(hfp_connection); 1862 return ERROR_CODE_SUCCESS; 1863 } 1864 1865 uint8_t hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 1866 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1867 if (!hfp_connection) { 1868 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1869 } 1870 1871 hfp_connection->hf_initiate_memory_dialing = 1; 1872 hfp_connection->memory_id = memory_id; 1873 1874 hfp_hf_run_for_context(hfp_connection); 1875 return ERROR_CODE_SUCCESS; 1876 } 1877 1878 uint8_t hfp_hf_redial_last_number(hci_con_handle_t acl_handle){ 1879 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1880 if (!hfp_connection) { 1881 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1882 } 1883 1884 hfp_connection->hf_initiate_redial_last_number = 1; 1885 hfp_hf_run_for_context(hfp_connection); 1886 return ERROR_CODE_SUCCESS; 1887 } 1888 1889 uint8_t hfp_hf_activate_call_waiting_notification(hci_con_handle_t acl_handle){ 1890 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1891 if (!hfp_connection) { 1892 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1893 } 1894 1895 hfp_connection->hf_activate_call_waiting_notification = 1; 1896 hfp_hf_run_for_context(hfp_connection); 1897 return ERROR_CODE_SUCCESS; 1898 } 1899 1900 1901 uint8_t hfp_hf_deactivate_call_waiting_notification(hci_con_handle_t acl_handle){ 1902 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1903 if (!hfp_connection) { 1904 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1905 } 1906 1907 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1908 hfp_hf_run_for_context(hfp_connection); 1909 return ERROR_CODE_SUCCESS; 1910 } 1911 1912 1913 uint8_t hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1914 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1915 if (!hfp_connection) { 1916 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1917 } 1918 1919 hfp_connection->hf_activate_calling_line_notification = 1; 1920 hfp_hf_run_for_context(hfp_connection); 1921 return ERROR_CODE_SUCCESS; 1922 } 1923 1924 uint8_t hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1925 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1926 if (!hfp_connection) { 1927 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1928 } 1929 1930 hfp_connection->hf_deactivate_calling_line_notification = 1; 1931 hfp_hf_run_for_context(hfp_connection); 1932 return ERROR_CODE_SUCCESS; 1933 } 1934 1935 static bool hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection_t * hfp_connection){ 1936 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_EC_NR_FUNCTION); 1937 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_EC_NR_FUNCTION); 1938 return hf && ag; 1939 } 1940 1941 uint8_t hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1942 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1943 if (!hfp_connection) { 1944 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1945 } 1946 if (!hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection)){ 1947 return ERROR_CODE_COMMAND_DISALLOWED; 1948 } 1949 1950 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1951 hfp_hf_run_for_context(hfp_connection); 1952 return ERROR_CODE_SUCCESS; 1953 } 1954 1955 uint8_t hfp_hf_activate_voice_recognition(hci_con_handle_t acl_handle){ 1956 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1957 if (!hfp_connection) { 1958 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1959 } 1960 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1961 return ERROR_CODE_COMMAND_DISALLOWED; 1962 } 1963 1964 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1965 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1966 if (!enhanced_vra_supported && !legacy_vra_supported){ 1967 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1968 } 1969 1970 switch (hfp_connection->vra_state){ 1971 case HFP_VRA_VOICE_RECOGNITION_OFF: 1972 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1973 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 1974 hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 1975 break; 1976 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1977 hfp_connection->activate_voice_recognition = true; 1978 break; 1979 default: 1980 return ERROR_CODE_COMMAND_DISALLOWED; 1981 } 1982 1983 hfp_hf_run_for_context(hfp_connection); 1984 return ERROR_CODE_SUCCESS; 1985 } 1986 1987 uint8_t hfp_hf_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 1988 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1989 if (!hfp_connection) { 1990 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1991 } 1992 1993 if (hfp_connection->emit_vra_enabled_after_audio_established){ 1994 return ERROR_CODE_COMMAND_DISALLOWED; 1995 } 1996 1997 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 1998 return ERROR_CODE_COMMAND_DISALLOWED; 1999 } 2000 2001 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 2002 if (!enhanced_vra_supported){ 2003 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2004 } 2005 2006 switch (hfp_connection->vra_state){ 2007 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 2008 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2009 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 2010 break; 2011 default: 2012 return ERROR_CODE_COMMAND_DISALLOWED; 2013 } 2014 2015 hfp_hf_run_for_context(hfp_connection); 2016 return ERROR_CODE_SUCCESS; 2017 } 2018 2019 2020 uint8_t hfp_hf_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2021 // return deactivate_voice_recognition(acl_handle, false); 2022 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2023 if (!hfp_connection) { 2024 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2025 } 2026 2027 if (hfp_connection->emit_vra_enabled_after_audio_established){ 2028 return ERROR_CODE_COMMAND_DISALLOWED; 2029 } 2030 2031 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 2032 hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 2033 return ERROR_CODE_COMMAND_DISALLOWED; 2034 } 2035 2036 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 2037 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 2038 if (!enhanced_vra_supported && !legacy_vra_supported){ 2039 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2040 } 2041 2042 switch (hfp_connection->vra_state){ 2043 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 2044 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 2045 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2046 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2047 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2048 break; 2049 2050 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 2051 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2052 hfp_connection->deactivate_voice_recognition = true; 2053 break; 2054 2055 case HFP_VRA_VOICE_RECOGNITION_OFF: 2056 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 2057 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 2058 default: 2059 return ERROR_CODE_COMMAND_DISALLOWED; 2060 } 2061 2062 hfp_hf_run_for_context(hfp_connection); 2063 return ERROR_CODE_SUCCESS; 2064 } 2065 2066 uint8_t hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2067 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2068 if (!hfp_connection) { 2069 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2070 } 2071 2072 if (hfp_connection->microphone_gain == gain) { 2073 return ERROR_CODE_SUCCESS; 2074 } 2075 2076 if ((gain < 0) || (gain > 15)){ 2077 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2078 return ERROR_CODE_COMMAND_DISALLOWED; 2079 } 2080 2081 hfp_connection->microphone_gain = gain; 2082 hfp_connection->send_microphone_gain = 1; 2083 hfp_hf_run_for_context(hfp_connection); 2084 return ERROR_CODE_SUCCESS; 2085 } 2086 2087 uint8_t hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2088 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2089 if (!hfp_connection) { 2090 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2091 } 2092 2093 if (hfp_connection->speaker_gain == gain){ 2094 return ERROR_CODE_SUCCESS; 2095 } 2096 2097 if ((gain < 0) || (gain > 15)){ 2098 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2099 return ERROR_CODE_COMMAND_DISALLOWED; 2100 } 2101 2102 hfp_connection->speaker_gain = gain; 2103 hfp_connection->send_speaker_gain = 1; 2104 hfp_hf_run_for_context(hfp_connection); 2105 return ERROR_CODE_SUCCESS; 2106 } 2107 2108 uint8_t hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 2109 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2110 if (!hfp_connection) { 2111 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2112 } 2113 hfp_connection->hf_send_dtmf_code = code; 2114 hfp_hf_run_for_context(hfp_connection); 2115 return ERROR_CODE_SUCCESS; 2116 } 2117 2118 uint8_t hfp_hf_request_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2119 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2120 if (!hfp_connection) { 2121 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2122 } 2123 hfp_connection->hf_send_binp = 1; 2124 hfp_hf_run_for_context(hfp_connection); 2125 return ERROR_CODE_SUCCESS; 2126 } 2127 2128 uint8_t hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 2129 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2130 if (!hfp_connection) { 2131 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2132 } 2133 hfp_connection->hf_send_clcc = 1; 2134 hfp_hf_run_for_context(hfp_connection); 2135 return ERROR_CODE_SUCCESS; 2136 } 2137 2138 2139 uint8_t hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 2140 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2141 if (!hfp_connection) { 2142 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2143 } 2144 hfp_connection->hf_send_rrh = 1; 2145 hfp_connection->hf_send_rrh_command = '?'; 2146 hfp_hf_run_for_context(hfp_connection); 2147 return ERROR_CODE_SUCCESS; 2148 } 2149 2150 uint8_t hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 2151 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2152 if (!hfp_connection) { 2153 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2154 } 2155 hfp_connection->hf_send_rrh = 1; 2156 hfp_connection->hf_send_rrh_command = '0'; 2157 hfp_hf_run_for_context(hfp_connection); 2158 return ERROR_CODE_SUCCESS; 2159 } 2160 2161 uint8_t hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 2162 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2163 if (!hfp_connection) { 2164 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2165 } 2166 hfp_connection->hf_send_rrh = 1; 2167 hfp_connection->hf_send_rrh_command = '1'; 2168 hfp_hf_run_for_context(hfp_connection); 2169 return ERROR_CODE_SUCCESS; 2170 } 2171 2172 uint8_t hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 2173 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2174 if (!hfp_connection) { 2175 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2176 } 2177 hfp_connection->hf_send_rrh = 1; 2178 hfp_connection->hf_send_rrh_command = '2'; 2179 hfp_hf_run_for_context(hfp_connection); 2180 return ERROR_CODE_SUCCESS; 2181 } 2182 2183 uint8_t hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 2184 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2185 if (!hfp_connection) { 2186 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2187 } 2188 hfp_connection->hf_send_cnum = 1; 2189 hfp_hf_run_for_context(hfp_connection); 2190 return ERROR_CODE_SUCCESS; 2191 } 2192 2193 uint8_t hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 2194 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2195 if (!hfp_connection) { 2196 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2197 } 2198 // find index for assigned number 2199 int i; 2200 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 2201 if (hfp_hf_indicators[i] == assigned_number){ 2202 // set value 2203 hfp_hf_indicators_value[i] = value; 2204 // mark for update 2205 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 2206 hfp_connection->generic_status_update_bitmap |= (1<<i); 2207 // send update 2208 hfp_hf_run_for_context(hfp_connection); 2209 } 2210 return ERROR_CODE_SUCCESS; 2211 } 2212 } 2213 return ERROR_CODE_SUCCESS; 2214 } 2215 2216 uint8_t hfp_hf_send_at_command(hci_con_handle_t acl_handle, const char * at_command){ 2217 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2218 if (!hfp_connection) { 2219 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2220 } 2221 if (hfp_connection->send_custom_message != NULL){ 2222 return ERROR_CODE_COMMAND_DISALLOWED; 2223 } 2224 hfp_connection->send_custom_message = at_command; 2225 hfp_hf_run_for_context(hfp_connection); 2226 return ERROR_CODE_SUCCESS; 2227 } 2228 2229 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 2230 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2231 if (!hfp_connection) { 2232 return 0; 2233 } 2234 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 2235 } 2236 2237 void hfp_hf_create_sdp_record(uint8_t * service, uint32_t service_record_handle, int rfcomm_channel_nr, const char * name, uint16_t supported_features, int wide_band_speech){ 2238 if (!name){ 2239 name = hfp_hf_default_service_name; 2240 } 2241 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 2242 2243 // Construct SupportedFeatures for SDP bitmap: 2244 // 2245 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2246 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2247 // 2248 // Wide band speech (bit 5) requires Codec negotiation 2249 // 2250 uint16_t sdp_features = supported_features & 0x1f; 2251 if ( (wide_band_speech != 0) && (supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION))){ 2252 sdp_features |= 1 << 5; 2253 } 2254 2255 if (supported_features & (1 << HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2256 sdp_features |= 1 << 6; 2257 } 2258 2259 if (supported_features & (1 << HFP_HFSF_VOICE_RECOGNITION_TEXT)){ 2260 sdp_features |= 1 << 7; 2261 } 2262 2263 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2264 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2265 } 2266 2267 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 2268 btstack_assert(callback != NULL); 2269 2270 hfp_hf_callback = callback; 2271 hfp_set_hf_callback(callback); 2272 } 2273