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 (hfp_connection->establish_audio_connection){ 715 hfp_connection->state = HFP_W4_SCO_CONNECTED; 716 hfp_connection->establish_audio_connection = 0; 717 hfp_setup_synchronous_connection(hfp_connection); 718 return 1; 719 } 720 return 0; 721 } 722 723 724 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 725 726 if (hfp_connection->ok_pending) return 0; 727 728 if (hfp_connection->hf_answer_incoming_call){ 729 hfp_hf_cmd_ata(hfp_connection->rfcomm_cid); 730 hfp_connection->hf_answer_incoming_call = 0; 731 return 1; 732 } 733 return 0; 734 } 735 736 static void hfp_hf_run_for_context(hfp_connection_t * hfp_connection){ 737 738 btstack_assert(hfp_connection != NULL); 739 btstack_assert(hfp_connection->local_role == HFP_ROLE_HF); 740 741 // during SDP query, RFCOMM CID is not set 742 if (hfp_connection->rfcomm_cid == 0) return; 743 744 // emit postponed VRA event 745 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->emit_vra_enabled_after_audio_established){ 746 hfp_connection->emit_vra_enabled_after_audio_established = false; 747 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 748 } 749 750 // assert command could be sent 751 if (hci_can_send_command_packet_now() == 0) return; 752 753 #ifdef ENABLE_CC256X_ASSISTED_HFP 754 // WBS Disassociate 755 if (hfp_connection->cc256x_send_wbs_disassociate){ 756 hfp_connection->cc256x_send_wbs_disassociate = false; 757 hci_send_cmd(&hci_ti_wbs_disassociate); 758 return; 759 } 760 // Write Codec Config 761 if (hfp_connection->cc256x_send_write_codec_config){ 762 hfp_connection->cc256x_send_write_codec_config = false; 763 hfp_cc256x_write_codec_config(hfp_connection); 764 return; 765 } 766 // WBS Associate 767 if (hfp_connection->cc256x_send_wbs_associate){ 768 hfp_connection->cc256x_send_wbs_associate = false; 769 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 770 return; 771 } 772 #endif 773 #ifdef ENABLE_BCM_PCM_WBS 774 // Enable WBS 775 if (hfp_connection->bcm_send_enable_wbs){ 776 hfp_connection->bcm_send_enable_wbs = false; 777 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 778 return; 779 } 780 // Write I2S/PCM params 781 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 782 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 783 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 784 return; 785 } 786 // Disable WBS 787 if (hfp_connection->bcm_send_disable_wbs){ 788 hfp_connection->bcm_send_disable_wbs = false; 789 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 790 return; 791 } 792 #endif 793 #ifdef ENABLE_RTK_PCM_WBS 794 if (hfp_connection->rtk_send_sco_config){ 795 hfp_connection->rtk_send_sco_config = false; 796 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){ 797 log_info("RTK SCO: 16k + mSBC"); 798 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x00, 0x00, 0x41); 799 } else { 800 log_info("RTK SCO: 16k + CVSD"); 801 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x0c, 0x00, 0x01); 802 } 803 return; 804 } 805 #endif 806 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 807 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 808 hfp_finalize_connection_context(hfp_connection); 809 return; 810 } 811 #endif 812 813 if (hfp_connection->accept_sco){ 814 bool incoming_eSCO = hfp_connection->accept_sco == 2; 815 hfp_connection->accept_sco = 0; 816 // notify about codec selection if not done already 817 if (hfp_connection->negotiated_codec == 0){ 818 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 819 } 820 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 821 return; 822 } 823 824 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 825 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 826 return; 827 } 828 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection); 829 if (!done){ 830 done = hfp_hf_run_for_context_service_level_connection_queries(hfp_connection); 831 } 832 if (!done){ 833 done = hfp_hf_run_for_audio_connection(hfp_connection); 834 } 835 if (!done){ 836 done = hfp_hf_voice_recognition_state_machine(hfp_connection); 837 } 838 if (!done){ 839 done = call_setup_state_machine(hfp_connection); 840 } 841 842 // don't send a new command while ok still pending or SLC is not established 843 if (hfp_connection->ok_pending || (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED)){ 844 return; 845 } 846 847 if (hfp_connection->send_microphone_gain){ 848 hfp_connection->send_microphone_gain = 0; 849 hfp_connection->ok_pending = 1; 850 hfp_hf_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 851 return; 852 } 853 854 if (hfp_connection->send_speaker_gain){ 855 hfp_connection->send_speaker_gain = 0; 856 hfp_connection->ok_pending = 1; 857 hfp_hf_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 858 return; 859 } 860 861 if (hfp_connection->hf_deactivate_calling_line_notification){ 862 hfp_connection->hf_deactivate_calling_line_notification = 0; 863 hfp_connection->ok_pending = 1; 864 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 0); 865 return; 866 } 867 868 if (hfp_connection->hf_activate_calling_line_notification){ 869 hfp_connection->hf_activate_calling_line_notification = 0; 870 hfp_connection->ok_pending = 1; 871 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 1); 872 return; 873 } 874 875 if (hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction){ 876 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 0; 877 hfp_connection->response_pending_for_command = HFP_CMD_TURN_OFF_EC_AND_NR; 878 hfp_connection->ok_pending = 1; 879 hfp_hf_send_cmd_with_int(hfp_connection->rfcomm_cid, HFP_TURN_OFF_EC_AND_NR, 0); 880 return; 881 } 882 883 if (hfp_connection->hf_deactivate_call_waiting_notification){ 884 hfp_connection->hf_deactivate_call_waiting_notification = 0; 885 hfp_connection->ok_pending = 1; 886 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 0); 887 return; 888 } 889 890 if (hfp_connection->hf_activate_call_waiting_notification){ 891 hfp_connection->hf_activate_call_waiting_notification = 0; 892 hfp_connection->ok_pending = 1; 893 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 1); 894 return; 895 } 896 897 if (hfp_connection->hf_initiate_outgoing_call){ 898 hfp_connection->hf_initiate_outgoing_call = 0; 899 hfp_connection->ok_pending = 1; 900 hfp_hf_initiate_outgoing_call_cmd(hfp_connection->rfcomm_cid); 901 return; 902 } 903 904 if (hfp_connection->hf_initiate_memory_dialing){ 905 hfp_connection->hf_initiate_memory_dialing = 0; 906 hfp_connection->ok_pending = 1; 907 hfp_hf_send_memory_dial_cmd(hfp_connection->rfcomm_cid, hfp_connection->memory_id); 908 return; 909 } 910 911 if (hfp_connection->hf_initiate_redial_last_number){ 912 hfp_connection->hf_initiate_redial_last_number = 0; 913 hfp_connection->ok_pending = 1; 914 hfp_hf_send_redial_last_number_cmd(hfp_connection->rfcomm_cid); 915 return; 916 } 917 918 if (hfp_connection->hf_send_chup){ 919 hfp_connection->hf_send_chup = 0; 920 hfp_connection->ok_pending = 1; 921 hfp_hf_send_chup(hfp_connection->rfcomm_cid); 922 return; 923 } 924 925 if (hfp_connection->hf_send_chld_0){ 926 hfp_connection->hf_send_chld_0 = 0; 927 hfp_connection->ok_pending = 1; 928 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 0); 929 return; 930 } 931 932 if (hfp_connection->hf_send_chld_1){ 933 hfp_connection->hf_send_chld_1 = 0; 934 hfp_connection->ok_pending = 1; 935 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 1); 936 return; 937 } 938 939 if (hfp_connection->hf_send_chld_2){ 940 hfp_connection->hf_send_chld_2 = 0; 941 hfp_connection->ok_pending = 1; 942 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 2); 943 return; 944 } 945 946 if (hfp_connection->hf_send_chld_3){ 947 hfp_connection->hf_send_chld_3 = 0; 948 hfp_connection->ok_pending = 1; 949 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 3); 950 return; 951 } 952 953 if (hfp_connection->hf_send_chld_4){ 954 hfp_connection->hf_send_chld_4 = 0; 955 hfp_connection->ok_pending = 1; 956 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 4); 957 return; 958 } 959 960 if (hfp_connection->hf_send_chld_x){ 961 hfp_connection->hf_send_chld_x = 0; 962 hfp_connection->ok_pending = 1; 963 hfp_hf_send_chld(hfp_connection->rfcomm_cid, hfp_connection->hf_send_chld_x_index); 964 return; 965 } 966 967 if (hfp_connection->hf_send_dtmf_code){ 968 char code = hfp_connection->hf_send_dtmf_code; 969 hfp_connection->hf_send_dtmf_code = 0; 970 hfp_connection->ok_pending = 1; 971 hfp_hf_send_dtmf(hfp_connection->rfcomm_cid, code); 972 // notify client that dtmf was sent 973 char buffer[2]; 974 buffer[0] = code; 975 buffer[1] = 0; 976 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 977 return; 978 } 979 980 if (hfp_connection->hf_send_binp){ 981 hfp_connection->hf_send_binp = 0; 982 hfp_connection->ok_pending = 1; 983 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 984 return; 985 } 986 987 if (hfp_connection->hf_send_clcc){ 988 hfp_connection->hf_send_clcc = 0; 989 hfp_connection->ok_pending = 1; 990 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 991 return; 992 } 993 994 if (hfp_connection->hf_send_rrh){ 995 hfp_connection->hf_send_rrh = 0; 996 char buffer[20]; 997 switch (hfp_connection->hf_send_rrh_command){ 998 case '?': 999 snprintf(buffer, sizeof(buffer), "AT%s?\r", 1000 HFP_RESPONSE_AND_HOLD); 1001 buffer[sizeof(buffer) - 1] = 0; 1002 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1003 return; 1004 case '0': 1005 case '1': 1006 case '2': 1007 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", 1008 HFP_RESPONSE_AND_HOLD, 1009 hfp_connection->hf_send_rrh_command); 1010 buffer[sizeof(buffer) - 1] = 0; 1011 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1012 return; 1013 default: 1014 break; 1015 } 1016 return; 1017 } 1018 1019 if (hfp_connection->hf_send_cnum){ 1020 hfp_connection->hf_send_cnum = 0; 1021 char buffer[20]; 1022 snprintf(buffer, sizeof(buffer), "AT%s\r", 1023 HFP_SUBSCRIBER_NUMBER_INFORMATION); 1024 buffer[sizeof(buffer) - 1] = 0; 1025 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1026 return; 1027 } 1028 1029 // update HF indicators 1030 if (hfp_connection->generic_status_update_bitmap){ 1031 int i; 1032 for (i=0; i < hfp_hf_indicators_nr; i++){ 1033 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 1034 if (hfp_connection->generic_status_indicators[i].state){ 1035 hfp_connection->ok_pending = 1; 1036 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 1037 char buffer[30]; 1038 snprintf(buffer, sizeof(buffer), "AT%s=%u,%u\r", 1039 HFP_TRANSFER_HF_INDICATOR_STATUS, 1040 hfp_hf_indicators[i], 1041 (unsigned int)hfp_hf_indicators_value[i]); 1042 buffer[sizeof(buffer) - 1] = 0; 1043 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1044 } else { 1045 log_info("Not sending HF indicator %u as it is disabled", hfp_hf_indicators[i]); 1046 } 1047 return; 1048 } 1049 } 1050 } 1051 1052 if (hfp_connection->send_custom_message != NULL){ 1053 const char * message = hfp_connection->send_custom_message; 1054 hfp_connection->send_custom_message = NULL; 1055 hfp_connection->ok_pending = 1; 1056 hfp_connection->response_pending_for_command = HFP_CMD_CUSTOM_MESSAGE; 1057 send_str_over_rfcomm(hfp_connection->rfcomm_cid, message); 1058 return; 1059 } 1060 1061 if (done) return; 1062 // deal with disconnect 1063 switch (hfp_connection->state){ 1064 case HFP_W2_DISCONNECT_RFCOMM: 1065 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1066 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1067 break; 1068 1069 default: 1070 break; 1071 } 1072 } 1073 1074 static void hfp_hf_slc_established(hfp_connection_t * hfp_connection){ 1075 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 1076 1077 hfp_emit_slc_connection_event(hfp_connection->local_role, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 1078 1079 uint8_t i; 1080 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1081 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1082 } 1083 1084 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1085 hfp_connection->ag_indicators[i].status_changed = 0; 1086 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1087 } 1088 1089 // restore volume settings 1090 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 1091 hfp_connection->send_speaker_gain = 1; 1092 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 1093 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 1094 hfp_connection->send_microphone_gain = 1; 1095 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 1096 // enable all indicators 1097 for (i=0; i < hfp_hf_indicators_nr; i++){ 1098 hfp_connection->generic_status_indicators[i].uuid = hfp_hf_indicators[i]; 1099 hfp_connection->generic_status_indicators[i].state = 1; 1100 } 1101 } 1102 1103 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 1104 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_hf_codecs_nr, hfp_hf_codecs)){ 1105 // Codec supported, confirm 1106 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1107 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1108 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 1109 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 1110 1111 hfp_connection->hf_send_codec_confirm = true; 1112 } else { 1113 // Codec not supported, send supported codecs 1114 hfp_connection->codec_confirmed = 0; 1115 hfp_connection->suggested_codec = 0; 1116 hfp_connection->negotiated_codec = 0; 1117 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1118 1119 hfp_connection->hf_send_supported_codecs = true; 1120 } 1121 } 1122 1123 static bool hfp_hf_switch_on_ok_pending(hfp_connection_t *hfp_connection, uint8_t status){ 1124 bool event_emited = true; 1125 1126 // cache state and reset 1127 hfp_command_t response_pending_for_command = hfp_connection->response_pending_for_command; 1128 hfp_connection->response_pending_for_command = HFP_CMD_NONE; 1129 hfp_connection->command = HFP_CMD_NONE; 1130 hfp_connection->ok_pending = 0; 1131 1132 switch (response_pending_for_command){ 1133 case HFP_CMD_TURN_OFF_EC_AND_NR: 1134 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 1135 break; 1136 case HFP_CMD_CUSTOM_MESSAGE: 1137 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, status); 1138 break; 1139 default: 1140 event_emited = false; 1141 1142 switch (hfp_connection->state){ 1143 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 1144 if (has_codec_negotiation_feature(hfp_connection)){ 1145 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 1146 break; 1147 } 1148 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1149 break; 1150 1151 case HFP_W4_NOTIFY_ON_CODECS: 1152 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1153 break; 1154 1155 case HFP_W4_RETRIEVE_INDICATORS: 1156 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 1157 break; 1158 1159 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 1160 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 1161 break; 1162 1163 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 1164 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 1165 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 1166 break; 1167 } 1168 if (has_hf_indicators_feature(hfp_connection)){ 1169 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1170 break; 1171 } 1172 hfp_hf_slc_established(hfp_connection); 1173 break; 1174 1175 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 1176 if (has_hf_indicators_feature(hfp_connection)){ 1177 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1178 break; 1179 } 1180 hfp_hf_slc_established(hfp_connection); 1181 break; 1182 1183 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 1184 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 1185 break; 1186 1187 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 1188 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 1189 break; 1190 1191 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 1192 hfp_hf_slc_established(hfp_connection); 1193 break; 1194 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1195 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 1196 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 1197 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_SUCCESS); 1198 break; 1199 } 1200 1201 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 1202 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 1203 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_SUCCESS); 1204 break; 1205 } 1206 1207 switch (hfp_connection->hf_query_operator_state){ 1208 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 1209 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1210 break; 1211 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 1212 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 1213 hfp_emit_network_operator_event(hfp_connection); 1214 break; 1215 default: 1216 break; 1217 } 1218 1219 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1220 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1221 break; 1222 } 1223 1224 switch (hfp_connection->codecs_state){ 1225 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1226 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1227 break; 1228 case HFP_CODECS_HF_CONFIRMED_CODEC: 1229 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1230 break; 1231 default: 1232 break; 1233 } 1234 hfp_hf_voice_recognition_state_machine(hfp_connection); 1235 break; 1236 case HFP_AUDIO_CONNECTION_ESTABLISHED: 1237 hfp_hf_voice_recognition_state_machine(hfp_connection); 1238 break; 1239 default: 1240 break; 1241 } 1242 break; 1243 } 1244 1245 return event_emited; 1246 } 1247 1248 static bool hfp_is_ringing(hfp_callsetup_status_t callsetup_status){ 1249 switch (callsetup_status){ 1250 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1251 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1252 return true; 1253 default: 1254 return false; 1255 } 1256 } 1257 1258 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1259 uint16_t i; 1260 1261 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1262 if (hfp_connection->ag_indicators[i].status_changed) { 1263 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1264 hfp_callsetup_status_t new_hf_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1265 bool ringing_old = hfp_is_ringing(hfp_hf_callsetup_status); 1266 bool ringing_new = hfp_is_ringing(new_hf_callsetup_status); 1267 if (ringing_old != ringing_new){ 1268 if (ringing_new){ 1269 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGING); 1270 } else { 1271 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGING); 1272 } 1273 } 1274 hfp_hf_callsetup_status = new_hf_callsetup_status; 1275 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1276 hfp_hf_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1277 // avoid set but not used warning 1278 (void) hfp_hf_callheld_status; 1279 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1280 hfp_call_status_t new_hf_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1281 if (hfp_hf_call_status != new_hf_call_status){ 1282 if (new_hf_call_status == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 1283 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1284 } else { 1285 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1286 } 1287 } 1288 hfp_hf_call_status = new_hf_call_status; 1289 } 1290 hfp_connection->ag_indicators[i].status_changed = 0; 1291 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1292 break; 1293 } 1294 } 1295 } 1296 1297 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1298 int value; 1299 int i; 1300 bool event_emited; 1301 1302 // last argument is still in line_buffer 1303 1304 switch (hfp_connection->command){ 1305 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1306 hfp_connection->command = HFP_CMD_NONE; 1307 hfp_hf_emit_subscriber_information(hfp_connection, 0); 1308 break; 1309 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1310 hfp_connection->command = HFP_CMD_NONE; 1311 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1312 break; 1313 case HFP_CMD_LIST_CURRENT_CALLS: 1314 hfp_connection->command = HFP_CMD_NONE; 1315 hfp_hf_emit_enhanced_call_status(hfp_connection); 1316 break; 1317 case HFP_CMD_SET_SPEAKER_GAIN: 1318 hfp_connection->command = HFP_CMD_NONE; 1319 value = btstack_atoi((char*)hfp_connection->line_buffer); 1320 hfp_hf_speaker_gain = value; 1321 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1322 break; 1323 case HFP_CMD_SET_MICROPHONE_GAIN: 1324 hfp_connection->command = HFP_CMD_NONE; 1325 value = btstack_atoi((char*)hfp_connection->line_buffer); 1326 hfp_hf_microphone_gain = value; 1327 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1328 break; 1329 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1330 hfp_connection->command = HFP_CMD_NONE; 1331 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1332 break; 1333 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1334 hfp_connection->command = HFP_CMD_NONE; 1335 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION); 1336 break; 1337 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1338 hfp_connection->command = HFP_CMD_NONE; 1339 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION); 1340 break; 1341 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1342 hfp_connection->command = HFP_CMD_NONE; 1343 hfp_connection->ok_pending = 0; 1344 hfp_connection->extended_audio_gateway_error = 0; 1345 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1346 break; 1347 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 1348 break; 1349 case HFP_CMD_ERROR: 1350 switch (hfp_connection->state){ 1351 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1352 switch (hfp_connection->codecs_state){ 1353 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1354 hfp_reset_context_flags(hfp_connection); 1355 hfp_emit_sco_event(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 0, hfp_connection->remote_addr, hfp_connection->negotiated_codec); 1356 return; 1357 default: 1358 break; 1359 } 1360 break; 1361 default: 1362 break; 1363 } 1364 1365 // handle error response for voice activation (HF initiated) 1366 switch(hfp_connection->vra_state_requested){ 1367 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1368 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1369 break; 1370 default: 1371 if (hfp_connection->vra_state_requested == hfp_connection->vra_state){ 1372 break; 1373 } 1374 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1375 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1376 hfp_reset_context_flags(hfp_connection); 1377 return; 1378 } 1379 event_emited = hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1380 if (!event_emited){ 1381 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_UNSPECIFIED_ERROR); 1382 } 1383 hfp_reset_context_flags(hfp_connection); 1384 break; 1385 1386 case HFP_CMD_OK: 1387 hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_SUCCESS); 1388 break; 1389 case HFP_CMD_RING: 1390 hfp_connection->command = HFP_CMD_NONE; 1391 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1392 break; 1393 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1394 hfp_connection->command = HFP_CMD_NONE; 1395 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1396 break; 1397 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1398 hfp_connection->command = HFP_CMD_NONE; 1399 // report status after SLC established 1400 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 1401 break; 1402 } 1403 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1404 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1405 } 1406 break; 1407 case HFP_CMD_AG_SUGGESTED_CODEC: 1408 hfp_connection->command = HFP_CMD_NONE; 1409 hfp_hf_handle_suggested_codec(hfp_connection); 1410 break; 1411 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1412 hfp_emit_event(hfp_connection, HFP_SUBEVENT_IN_BAND_RING_TONE, get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE)); 1413 default: 1414 break; 1415 } 1416 } 1417 1418 static int hfp_parser_is_end_of_line(uint8_t byte){ 1419 return (byte == '\n') || (byte == '\r'); 1420 } 1421 1422 static void hfp_hf_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 1423 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1424 if (size < 1) return; 1425 1426 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1427 #ifdef ENABLE_HFP_AT_MESSAGES 1428 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1429 #endif 1430 1431 // process messages byte-wise 1432 uint8_t pos; 1433 for (pos = 0; pos < size; pos++){ 1434 hfp_parse(hfp_connection, packet[pos], 1); 1435 // parse until end of line "\r" or "\n" 1436 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1437 hfp_hf_handle_rfcomm_command(hfp_connection); 1438 } 1439 } 1440 1441 static void hfp_hf_run(void){ 1442 btstack_linked_list_iterator_t it; 1443 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1444 while (btstack_linked_list_iterator_has_next(&it)){ 1445 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1446 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1447 hfp_hf_run_for_context(hfp_connection); 1448 } 1449 } 1450 1451 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1452 hfp_connection_t * hfp_connection; 1453 switch (packet_type){ 1454 case RFCOMM_DATA_PACKET: 1455 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1456 if (!hfp_connection) return; 1457 hfp_hf_handle_rfcomm_data(hfp_connection, packet, size); 1458 hfp_hf_run_for_context(hfp_connection); 1459 return; 1460 case HCI_EVENT_PACKET: 1461 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1462 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1463 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1464 return; 1465 } 1466 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1467 break; 1468 default: 1469 break; 1470 } 1471 hfp_hf_run(); 1472 } 1473 1474 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1475 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1476 hfp_hf_run(); 1477 } 1478 1479 static void hfp_hf_set_defaults(void){ 1480 hfp_hf_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1481 hfp_hf_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1482 hfp_hf_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1483 hfp_hf_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1484 hfp_hf_codecs_nr = 0; 1485 hfp_hf_speaker_gain = 9; 1486 hfp_hf_microphone_gain = 9; 1487 hfp_hf_indicators_nr = 0; 1488 } 1489 1490 uint8_t hfp_hf_set_default_microphone_gain(uint8_t gain){ 1491 if (gain > 15){ 1492 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 1493 } 1494 hfp_hf_microphone_gain = gain; 1495 return ERROR_CODE_SUCCESS; 1496 } 1497 1498 uint8_t hfp_hf_set_default_speaker_gain(uint8_t gain){ 1499 if (gain > 15){ 1500 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 1501 } 1502 hfp_hf_speaker_gain = gain; 1503 return ERROR_CODE_SUCCESS; 1504 } 1505 1506 uint8_t hfp_hf_init(uint8_t rfcomm_channel_nr){ 1507 uint8_t status = rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1508 if (status != ERROR_CODE_SUCCESS){ 1509 return status; 1510 } 1511 1512 hfp_init(); 1513 hfp_hf_set_defaults(); 1514 1515 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1516 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1517 1518 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1519 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1520 return ERROR_CODE_SUCCESS; 1521 } 1522 1523 void hfp_hf_deinit(void){ 1524 hfp_deinit(); 1525 hfp_hf_set_defaults(); 1526 1527 hfp_hf_callback = NULL; 1528 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1529 (void) memset(hfp_hf_phone_number, 0, sizeof(hfp_hf_phone_number)); 1530 } 1531 1532 void hfp_hf_init_codecs(int codecs_nr, const uint8_t * codecs){ 1533 btstack_assert(codecs_nr <= HFP_MAX_NUM_CODECS); 1534 1535 hfp_hf_codecs_nr = codecs_nr; 1536 int i; 1537 for (i=0; i<codecs_nr; i++){ 1538 hfp_hf_codecs[i] = codecs[i]; 1539 } 1540 } 1541 1542 void hfp_hf_init_supported_features(uint32_t supported_features){ 1543 hfp_hf_supported_features = supported_features; 1544 } 1545 1546 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1547 btstack_assert(hfp_hf_indicators_nr < HFP_MAX_NUM_INDICATORS); 1548 1549 hfp_hf_indicators_nr = indicators_nr; 1550 int i; 1551 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 1552 hfp_hf_indicators[i] = (uint8_t) indicators[i]; 1553 } 1554 } 1555 1556 uint8_t hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1557 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1558 } 1559 1560 uint8_t hfp_hf_release_service_level_connection(hci_con_handle_t acl_handle){ 1561 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1562 if (!hfp_connection){ 1563 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1564 } 1565 hfp_trigger_release_service_level_connection(hfp_connection); 1566 hfp_hf_run_for_context(hfp_connection); 1567 return ERROR_CODE_SUCCESS; 1568 } 1569 1570 static uint8_t hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1571 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1572 if (!hfp_connection) { 1573 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1574 } 1575 hfp_connection->enable_status_update_for_ag_indicators = enable; 1576 hfp_hf_run_for_context(hfp_connection); 1577 return ERROR_CODE_SUCCESS; 1578 } 1579 1580 uint8_t hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1581 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1582 } 1583 1584 uint8_t hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1585 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1586 } 1587 1588 // TODO: returned ERROR - wrong format 1589 uint8_t hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1590 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1591 if (!hfp_connection) { 1592 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1593 } 1594 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1595 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1596 hfp_hf_run_for_context(hfp_connection); 1597 return ERROR_CODE_SUCCESS; 1598 } 1599 1600 uint8_t hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1601 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1602 if (!hfp_connection) { 1603 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1604 } 1605 1606 switch (hfp_connection->hf_query_operator_state){ 1607 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1608 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1609 break; 1610 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1611 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1612 break; 1613 default: 1614 return ERROR_CODE_COMMAND_DISALLOWED; 1615 } 1616 hfp_hf_run_for_context(hfp_connection); 1617 return ERROR_CODE_SUCCESS; 1618 } 1619 1620 static uint8_t hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1621 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1622 if (!hfp_connection) { 1623 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1624 } 1625 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1626 hfp_hf_run_for_context(hfp_connection); 1627 return ERROR_CODE_SUCCESS; 1628 } 1629 1630 1631 uint8_t hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1632 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1633 } 1634 1635 uint8_t hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1636 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1637 } 1638 1639 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1640 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_hf_supported_features & (1 << HFP_HFSF_ESCO_S4)); 1641 } 1642 1643 uint8_t hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1644 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1645 if (!hfp_connection) { 1646 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1647 } 1648 1649 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1650 return ERROR_CODE_COMMAND_DISALLOWED; 1651 } 1652 1653 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 1654 return ERROR_CODE_COMMAND_DISALLOWED; 1655 } 1656 if (has_codec_negotiation_feature(hfp_connection)) { 1657 switch (hfp_connection->codecs_state) { 1658 case HFP_CODECS_W4_AG_COMMON_CODEC: 1659 break; 1660 case HFP_CODECS_EXCHANGED: 1661 hfp_connection->trigger_codec_exchange = 1; 1662 break; 1663 default: 1664 hfp_connection->codec_confirmed = 0; 1665 hfp_connection->suggested_codec = 0; 1666 hfp_connection->negotiated_codec = 0; 1667 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1668 hfp_connection->trigger_codec_exchange = 1; 1669 break; 1670 } 1671 } else { 1672 log_info("no codec negotiation feature, use CVSD"); 1673 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1674 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1675 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1676 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1677 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1678 hfp_connection->establish_audio_connection = 1; 1679 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1680 } 1681 1682 hfp_hf_run_for_context(hfp_connection); 1683 return ERROR_CODE_SUCCESS; 1684 } 1685 1686 uint8_t hfp_hf_release_audio_connection(hci_con_handle_t acl_handle){ 1687 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1688 if (!hfp_connection) { 1689 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1690 } 1691 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 1692 return ERROR_CODE_COMMAND_DISALLOWED; 1693 } 1694 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 1695 if (status == ERROR_CODE_SUCCESS){ 1696 hfp_hf_run_for_context(hfp_connection); 1697 } 1698 return ERROR_CODE_SUCCESS; 1699 } 1700 1701 uint8_t hfp_hf_answer_incoming_call(hci_con_handle_t acl_handle){ 1702 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1703 if (!hfp_connection) { 1704 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1705 } 1706 1707 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1708 hfp_connection->hf_answer_incoming_call = 1; 1709 hfp_hf_run_for_context(hfp_connection); 1710 } else { 1711 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_hf_callsetup_status); 1712 return ERROR_CODE_COMMAND_DISALLOWED; 1713 } 1714 return ERROR_CODE_SUCCESS; 1715 } 1716 1717 uint8_t hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1718 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1719 if (!hfp_connection) { 1720 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1721 } 1722 hfp_connection->hf_send_chup = 1; 1723 hfp_hf_run_for_context(hfp_connection); 1724 return ERROR_CODE_SUCCESS; 1725 } 1726 1727 uint8_t hfp_hf_reject_incoming_call(hci_con_handle_t acl_handle){ 1728 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1729 if (!hfp_connection) { 1730 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1731 } 1732 1733 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1734 hfp_connection->hf_send_chup = 1; 1735 hfp_hf_run_for_context(hfp_connection); 1736 } 1737 return ERROR_CODE_SUCCESS; 1738 } 1739 1740 uint8_t hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1741 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1742 if (!hfp_connection) { 1743 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1744 } 1745 1746 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1747 hfp_connection->hf_send_chld_0 = 1; 1748 hfp_hf_run_for_context(hfp_connection); 1749 } 1750 return ERROR_CODE_SUCCESS; 1751 } 1752 1753 uint8_t hfp_hf_terminate_held_calls(hci_con_handle_t acl_handle){ 1754 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1755 if (!hfp_connection) { 1756 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1757 } 1758 1759 hfp_connection->hf_send_chld_0 = 1; 1760 hfp_hf_run_for_context(hfp_connection); 1761 1762 return ERROR_CODE_SUCCESS; 1763 } 1764 1765 uint8_t hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1766 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1767 if (!hfp_connection) { 1768 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1769 } 1770 1771 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1772 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1773 hfp_connection->hf_send_chld_1 = 1; 1774 hfp_hf_run_for_context(hfp_connection); 1775 } 1776 return ERROR_CODE_SUCCESS; 1777 } 1778 1779 uint8_t hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1780 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1781 if (!hfp_connection) { 1782 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1783 } 1784 1785 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1786 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1787 hfp_connection->hf_send_chld_2 = 1; 1788 hfp_hf_run_for_context(hfp_connection); 1789 } 1790 return ERROR_CODE_SUCCESS; 1791 } 1792 1793 uint8_t hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1794 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1795 if (!hfp_connection) { 1796 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1797 } 1798 1799 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1800 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1801 hfp_connection->hf_send_chld_3 = 1; 1802 hfp_hf_run_for_context(hfp_connection); 1803 } 1804 return ERROR_CODE_SUCCESS; 1805 } 1806 1807 uint8_t hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1808 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1809 if (!hfp_connection) { 1810 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1811 } 1812 1813 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1814 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1815 hfp_connection->hf_send_chld_4 = 1; 1816 hfp_hf_run_for_context(hfp_connection); 1817 } 1818 return ERROR_CODE_SUCCESS; 1819 } 1820 1821 uint8_t hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1822 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1823 if (!hfp_connection) { 1824 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1825 } 1826 1827 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1828 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1829 hfp_connection->hf_send_chld_x = 1; 1830 hfp_connection->hf_send_chld_x_index = 10 + index; 1831 hfp_hf_run_for_context(hfp_connection); 1832 } 1833 return ERROR_CODE_SUCCESS; 1834 } 1835 1836 uint8_t hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 1837 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1838 if (!hfp_connection) { 1839 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1840 } 1841 1842 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1843 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1844 hfp_connection->hf_send_chld_x = 1; 1845 hfp_connection->hf_send_chld_x_index = 20 + index; 1846 hfp_hf_run_for_context(hfp_connection); 1847 } 1848 return ERROR_CODE_SUCCESS; 1849 } 1850 1851 uint8_t hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 1852 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1853 if (!hfp_connection) { 1854 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1855 } 1856 1857 hfp_connection->hf_initiate_outgoing_call = 1; 1858 snprintf(hfp_hf_phone_number, sizeof(hfp_hf_phone_number), "%s", number); 1859 hfp_hf_run_for_context(hfp_connection); 1860 return ERROR_CODE_SUCCESS; 1861 } 1862 1863 uint8_t hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 1864 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1865 if (!hfp_connection) { 1866 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1867 } 1868 1869 hfp_connection->hf_initiate_memory_dialing = 1; 1870 hfp_connection->memory_id = memory_id; 1871 1872 hfp_hf_run_for_context(hfp_connection); 1873 return ERROR_CODE_SUCCESS; 1874 } 1875 1876 uint8_t hfp_hf_redial_last_number(hci_con_handle_t acl_handle){ 1877 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1878 if (!hfp_connection) { 1879 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1880 } 1881 1882 hfp_connection->hf_initiate_redial_last_number = 1; 1883 hfp_hf_run_for_context(hfp_connection); 1884 return ERROR_CODE_SUCCESS; 1885 } 1886 1887 uint8_t hfp_hf_activate_call_waiting_notification(hci_con_handle_t acl_handle){ 1888 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1889 if (!hfp_connection) { 1890 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1891 } 1892 1893 hfp_connection->hf_activate_call_waiting_notification = 1; 1894 hfp_hf_run_for_context(hfp_connection); 1895 return ERROR_CODE_SUCCESS; 1896 } 1897 1898 1899 uint8_t hfp_hf_deactivate_call_waiting_notification(hci_con_handle_t acl_handle){ 1900 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1901 if (!hfp_connection) { 1902 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1903 } 1904 1905 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1906 hfp_hf_run_for_context(hfp_connection); 1907 return ERROR_CODE_SUCCESS; 1908 } 1909 1910 1911 uint8_t hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1912 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1913 if (!hfp_connection) { 1914 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1915 } 1916 1917 hfp_connection->hf_activate_calling_line_notification = 1; 1918 hfp_hf_run_for_context(hfp_connection); 1919 return ERROR_CODE_SUCCESS; 1920 } 1921 1922 uint8_t hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1923 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1924 if (!hfp_connection) { 1925 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1926 } 1927 1928 hfp_connection->hf_deactivate_calling_line_notification = 1; 1929 hfp_hf_run_for_context(hfp_connection); 1930 return ERROR_CODE_SUCCESS; 1931 } 1932 1933 static bool hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection_t * hfp_connection){ 1934 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_EC_NR_FUNCTION); 1935 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_EC_NR_FUNCTION); 1936 return hf && ag; 1937 } 1938 1939 uint8_t hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1940 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1941 if (!hfp_connection) { 1942 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1943 } 1944 if (!hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection)){ 1945 return ERROR_CODE_COMMAND_DISALLOWED; 1946 } 1947 1948 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1949 hfp_hf_run_for_context(hfp_connection); 1950 return ERROR_CODE_SUCCESS; 1951 } 1952 1953 uint8_t hfp_hf_activate_voice_recognition(hci_con_handle_t acl_handle){ 1954 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1955 if (!hfp_connection) { 1956 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1957 } 1958 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1959 return ERROR_CODE_COMMAND_DISALLOWED; 1960 } 1961 1962 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1963 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1964 if (!enhanced_vra_supported && !legacy_vra_supported){ 1965 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1966 } 1967 1968 switch (hfp_connection->vra_state){ 1969 case HFP_VRA_VOICE_RECOGNITION_OFF: 1970 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1971 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 1972 hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 1973 break; 1974 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1975 hfp_connection->activate_voice_recognition = true; 1976 break; 1977 default: 1978 return ERROR_CODE_COMMAND_DISALLOWED; 1979 } 1980 1981 hfp_hf_run_for_context(hfp_connection); 1982 return ERROR_CODE_SUCCESS; 1983 } 1984 1985 uint8_t hfp_hf_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 1986 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1987 if (!hfp_connection) { 1988 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1989 } 1990 1991 if (hfp_connection->emit_vra_enabled_after_audio_established){ 1992 return ERROR_CODE_COMMAND_DISALLOWED; 1993 } 1994 1995 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 1996 return ERROR_CODE_COMMAND_DISALLOWED; 1997 } 1998 1999 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 2000 if (!enhanced_vra_supported){ 2001 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2002 } 2003 2004 switch (hfp_connection->vra_state){ 2005 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 2006 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2007 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 2008 break; 2009 default: 2010 return ERROR_CODE_COMMAND_DISALLOWED; 2011 } 2012 2013 hfp_hf_run_for_context(hfp_connection); 2014 return ERROR_CODE_SUCCESS; 2015 } 2016 2017 2018 uint8_t hfp_hf_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2019 // return deactivate_voice_recognition(acl_handle, false); 2020 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2021 if (!hfp_connection) { 2022 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2023 } 2024 2025 if (hfp_connection->emit_vra_enabled_after_audio_established){ 2026 return ERROR_CODE_COMMAND_DISALLOWED; 2027 } 2028 2029 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 2030 hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 2031 return ERROR_CODE_COMMAND_DISALLOWED; 2032 } 2033 2034 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 2035 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 2036 if (!enhanced_vra_supported && !legacy_vra_supported){ 2037 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2038 } 2039 2040 switch (hfp_connection->vra_state){ 2041 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 2042 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 2043 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2044 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2045 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2046 break; 2047 2048 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 2049 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2050 hfp_connection->deactivate_voice_recognition = true; 2051 break; 2052 2053 case HFP_VRA_VOICE_RECOGNITION_OFF: 2054 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 2055 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 2056 default: 2057 return ERROR_CODE_COMMAND_DISALLOWED; 2058 } 2059 2060 hfp_hf_run_for_context(hfp_connection); 2061 return ERROR_CODE_SUCCESS; 2062 } 2063 2064 uint8_t hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2065 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2066 if (!hfp_connection) { 2067 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2068 } 2069 2070 if (hfp_connection->microphone_gain == gain) { 2071 return ERROR_CODE_SUCCESS; 2072 } 2073 2074 if ((gain < 0) || (gain > 15)){ 2075 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2076 return ERROR_CODE_COMMAND_DISALLOWED; 2077 } 2078 2079 hfp_connection->microphone_gain = gain; 2080 hfp_connection->send_microphone_gain = 1; 2081 hfp_hf_run_for_context(hfp_connection); 2082 return ERROR_CODE_SUCCESS; 2083 } 2084 2085 uint8_t hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2086 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2087 if (!hfp_connection) { 2088 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2089 } 2090 2091 if (hfp_connection->speaker_gain == gain){ 2092 return ERROR_CODE_SUCCESS; 2093 } 2094 2095 if ((gain < 0) || (gain > 15)){ 2096 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2097 return ERROR_CODE_COMMAND_DISALLOWED; 2098 } 2099 2100 hfp_connection->speaker_gain = gain; 2101 hfp_connection->send_speaker_gain = 1; 2102 hfp_hf_run_for_context(hfp_connection); 2103 return ERROR_CODE_SUCCESS; 2104 } 2105 2106 uint8_t hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 2107 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2108 if (!hfp_connection) { 2109 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2110 } 2111 hfp_connection->hf_send_dtmf_code = code; 2112 hfp_hf_run_for_context(hfp_connection); 2113 return ERROR_CODE_SUCCESS; 2114 } 2115 2116 uint8_t hfp_hf_request_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2117 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2118 if (!hfp_connection) { 2119 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2120 } 2121 hfp_connection->hf_send_binp = 1; 2122 hfp_hf_run_for_context(hfp_connection); 2123 return ERROR_CODE_SUCCESS; 2124 } 2125 2126 uint8_t hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 2127 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2128 if (!hfp_connection) { 2129 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2130 } 2131 hfp_connection->hf_send_clcc = 1; 2132 hfp_hf_run_for_context(hfp_connection); 2133 return ERROR_CODE_SUCCESS; 2134 } 2135 2136 2137 uint8_t hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 2138 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2139 if (!hfp_connection) { 2140 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2141 } 2142 hfp_connection->hf_send_rrh = 1; 2143 hfp_connection->hf_send_rrh_command = '?'; 2144 hfp_hf_run_for_context(hfp_connection); 2145 return ERROR_CODE_SUCCESS; 2146 } 2147 2148 uint8_t hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 2149 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2150 if (!hfp_connection) { 2151 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2152 } 2153 hfp_connection->hf_send_rrh = 1; 2154 hfp_connection->hf_send_rrh_command = '0'; 2155 hfp_hf_run_for_context(hfp_connection); 2156 return ERROR_CODE_SUCCESS; 2157 } 2158 2159 uint8_t hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 2160 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2161 if (!hfp_connection) { 2162 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2163 } 2164 hfp_connection->hf_send_rrh = 1; 2165 hfp_connection->hf_send_rrh_command = '1'; 2166 hfp_hf_run_for_context(hfp_connection); 2167 return ERROR_CODE_SUCCESS; 2168 } 2169 2170 uint8_t hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 2171 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2172 if (!hfp_connection) { 2173 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2174 } 2175 hfp_connection->hf_send_rrh = 1; 2176 hfp_connection->hf_send_rrh_command = '2'; 2177 hfp_hf_run_for_context(hfp_connection); 2178 return ERROR_CODE_SUCCESS; 2179 } 2180 2181 uint8_t hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 2182 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2183 if (!hfp_connection) { 2184 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2185 } 2186 hfp_connection->hf_send_cnum = 1; 2187 hfp_hf_run_for_context(hfp_connection); 2188 return ERROR_CODE_SUCCESS; 2189 } 2190 2191 uint8_t hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 2192 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2193 if (!hfp_connection) { 2194 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2195 } 2196 // find index for assigned number 2197 int i; 2198 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 2199 if (hfp_hf_indicators[i] == assigned_number){ 2200 // set value 2201 hfp_hf_indicators_value[i] = value; 2202 // mark for update 2203 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 2204 hfp_connection->generic_status_update_bitmap |= (1<<i); 2205 // send update 2206 hfp_hf_run_for_context(hfp_connection); 2207 } 2208 return ERROR_CODE_SUCCESS; 2209 } 2210 } 2211 return ERROR_CODE_SUCCESS; 2212 } 2213 2214 uint8_t hfp_hf_send_at_command(hci_con_handle_t acl_handle, const char * at_command){ 2215 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2216 if (!hfp_connection) { 2217 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2218 } 2219 if (hfp_connection->send_custom_message != NULL){ 2220 return ERROR_CODE_COMMAND_DISALLOWED; 2221 } 2222 hfp_connection->send_custom_message = at_command; 2223 hfp_hf_run_for_context(hfp_connection); 2224 return ERROR_CODE_SUCCESS; 2225 } 2226 2227 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 2228 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2229 if (!hfp_connection) { 2230 return 0; 2231 } 2232 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 2233 } 2234 2235 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){ 2236 if (!name){ 2237 name = hfp_hf_default_service_name; 2238 } 2239 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 2240 2241 // Construct SupportedFeatures for SDP bitmap: 2242 // 2243 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2244 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2245 // 2246 // Wide band speech (bit 5) requires Codec negotiation 2247 // 2248 uint16_t sdp_features = supported_features & 0x1f; 2249 if ( (wide_band_speech != 0) && (supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION))){ 2250 sdp_features |= 1 << 5; 2251 } 2252 2253 if (supported_features & (1 << HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2254 sdp_features |= 1 << 6; 2255 } 2256 2257 if (supported_features & (1 << HFP_HFSF_VOICE_RECOGNITION_TEXT)){ 2258 sdp_features |= 1 << 7; 2259 } 2260 2261 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2262 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2263 } 2264 2265 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 2266 btstack_assert(callback != NULL); 2267 2268 hfp_hf_callback = callback; 2269 hfp_set_hf_callback(callback); 2270 } 2271