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RDKEMW-14906 : VAD detector in Control Manager/Voice SDK #186

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RDKEMW-14906 : VAD detector in Control Manager/Voice SDK #186

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3da65c7
Adding config params
dwolaver Mar 23, 2026
9fa0704
Remove vad timeout
dwolaver Mar 24, 2026
51895ce
Only use VAD mode setting for PTT
dwolaver Mar 24, 2026
15a964e
Add silent utterance reason
dwolaver Mar 26, 2026
b37e68f
adding telemetry data
dwolaver Apr 3, 2026
8e27504
change the telemetry stats default back
dwolaver Apr 3, 2026
b548cec
fix copilot comments
dwolaver Apr 6, 2026
2e705cb
more copilot fixes
dwolaver Apr 6, 2026
bdd8473
Merge branch 'develop' into feature/RDKEMW-14906_stream_voice_activit…
dwolaver Apr 14, 2026
d45bc42
move config option out of force_voice_settings
dwolaver Apr 23, 2026
19efd7c
print vad stats when present
dwolaver May 1, 2026
04190d9
Merge branch 'develop' into feature/RDKEMW-14906_stream_voice_activit…
dwolaver May 1, 2026
3517697
Merge branch 'develop' into feature/RDKEMW-14906_stream_voice_activit…
dwolaver May 4, 2026
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3 changes: 2 additions & 1 deletion include/ctrlm_ipc.h
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Original file line number Diff line number Diff line change
Expand Up @@ -302,7 +302,8 @@ typedef enum {
CTRLM_RCU_IARM_EVENT_RF4CE_PAIRING_WINDOW_TIMEOUT = 35, ///< Indicates that a battery milestone event occured
CTRLM_RCU_IARM_EVENT_FIRMWARE_UPDATE_PROGRESS = 36, ///< Generated when an milestone is reached for remote firmware upgrade
CTRLM_RCU_IARM_EVENT_VALIDATION_STATUS = 37, ///< Generated when the validation status changes
CTRLM_MAIN_IARM_EVENT_MAX = 38 ///< Placeholder for the last event (used in registration)
CTRLM_VOICE_IARM_EVENT_SESSION_SILENT = 38, ///< Voice session was silent (no speech detected)
CTRLM_MAIN_IARM_EVENT_MAX = 39 ///< Placeholder for the last event (used in registration)
} ctrlm_main_iarm_event_t;

/// @brief Remote Control Key Status
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11 changes: 11 additions & 0 deletions include/ctrlm_ipc_voice.h
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Expand Up @@ -281,6 +281,16 @@ typedef struct {
long return_code_internal; ///< Internally generated return code
} ctrlm_voice_iarm_event_session_short_t;

typedef struct {
unsigned char api_revision; ///< The revision of this API.
ctrlm_network_id_t network_id; ///< Identifier of network on which the controller is bound
ctrlm_network_type_t network_type; ///< Type of network on which the controller is bound
ctrlm_controller_id_t controller_id; ///< A unique identifier of the remote
unsigned long session_id; ///< A unique id for the voice session.
ctrlm_voice_session_end_reason_t reason; ///< The reason that the voice session was silent
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long return_code_internal; ///< Internally generated return code
} ctrlm_voice_iarm_event_session_silent_t;

typedef struct {
unsigned char api_revision; ///< The revision of this API
char media_service_url[2083]; ///< The url for the media service (null terminated string)
Expand Down Expand Up @@ -376,6 +386,7 @@ typedef struct {
/// | CTRLM_MAIN_IARM_BUS_NAME | CTRLM_VOICE_IARM_EVENT_SESSION_STATS | ctrlm_voice_iarm_event_session_stats_t * | Generated when the statistics of the voice session are available |
/// | CTRLM_MAIN_IARM_BUS_NAME | CTRLM_VOICE_IARM_EVENT_SESSION_ABORT | ctrlm_voice_iarm_event_session_abort_t * | Generated when a voice session is aborted (denied) |
/// | CTRLM_MAIN_IARM_BUS_NAME | CTRLM_VOICE_IARM_EVENT_SESSION_SHORT | ctrlm_voice_iarm_event_session_short_t * | Generated when a short voice session is detected |
/// | CTRLM_MAIN_IARM_BUS_NAME | CTRLM_VOICE_IARM_EVENT_SESSION_SILENT | ctrlm_voice_iarm_event_session_silent_t * | Generated when a silent voice session is detected |
/// | CTRLM_MAIN_IARM_BUS_NAME | CTRLM_VOICE_IARM_EVENT_MEDIA_SERVICE | ctrlm_voice_iarm_event_media_service_t * | Generated when a media service response is received |
///
/// IARM events are available on a subscription basis. In order to receive an event, a client must explicitly register to receive the event by calling
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4 changes: 3 additions & 1 deletion src/ctrlm_config_default.json
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Expand Up @@ -291,7 +291,9 @@
"par_voice_eos_method" : 1,
"par_voice_eos_timeout" : 2500,
"server_hosts" : [],
"telemetry_session_stats" : false
"telemetry_session_stats" : false,
"voice_activity_detection_mode" : "enabled"

},
"device_update" : {
"dir_root" : "/srv/device_update/",
Expand Down
16 changes: 11 additions & 5 deletions src/telemetry/ctrlm_telemetry_markers.h
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Expand Up @@ -93,7 +93,7 @@
// The Voice Session Statistics Marker reports statistics for the voice session(s). The format of the marker is a json array of arrays with each event in the format below:
//
// [[event1], [event2], [event3], ...]
// [<version>,<device_type>,<device_version>,<encoding>,<interaction_mode>,<time_prev_session>,<time_start_lag>,<time_stream_len_exp>,<time_stream_len_act>,<time_stream_delta>,<packets_total>,<packets_lost>,<samples_total>,<samples_lost>,<decoder_failures>,<samples_buffered_max>,<stream_ret_code>,<protocol_ret_code>,<server_ret_code>,<server_message>,<result>]
// [<version>,<device_type>,<device_version>,<encoding>,<interaction_mode>,<time_prev_session>,<time_start_lag>,<time_stream_len_exp>,<time_stream_len_act>,<time_stream_delta>,<packets_total>,<packets_lost>,<samples_total>,<samples_lost>,<decoder_failures>,<samples_buffered_max>,<end_reason_rcu>,<end_reason_session>,<end_reason_server>,<server_message>,<result>,<end_reason_stream>,<ret_code_protocol>,<voice_detected>,<peak_confidence>,<peak_rms_level>]
//
// <version> - Version of the marker format.
// <device_type> - Name of the device that started the session.
Expand All @@ -111,13 +111,19 @@
// <samples_lost> - lost samples.
// <decoder_failures> - decoder failure count.
// <samples_buffered_max> - sample buffer high watermark.
// <stream_ret_code> - audio stream success/error code.
// <protocol_ret_code> - protocol success/error code.
// <server_ret_code> - server success/error code.
// <end_reason_rcu> - audio stream success/error code.
// <end_reason_session> - session success/error code.
// <end_reason_server> - server success/error code.
// <server_message> - server message.
// <result> - flag to indicate if session was successful.
// <end_reason_stream> - reason why the stream ended (if available).
// <ret_code_protocol> - protocol return code.
// <voice_detected> - flag to indicate if voice was detected.
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Outdated
// <peak_confidence> - peak confidence level.
// <peak_rms_level> - peak RMS level.

#define MARKER_VOICE_SESSION_STATS "ctrlm.voice.session.stats"
#define MARKER_VOICE_SESSION_STATS_VERSION "2"
#define MARKER_VOICE_SESSION_STATS_VERSION "3"

// End Voice Session Statistics

Expand Down
111 changes: 76 additions & 35 deletions src/voice/ctrlm_voice_obj.cpp
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Expand Up @@ -186,39 +186,40 @@ ctrlm_voice_t::ctrlm_voice_t() {
#ifdef JSON_ARRAY_VAL_STR_VOICE_SERVER_HOSTS_3
this->url_hostname_pattern_add(JSON_ARRAY_VAL_STR_VOICE_SERVER_HOSTS_3);
#endif
this->prefs.aspect_ratio = JSON_STR_VALUE_VOICE_ASPECT_RATIO;
this->prefs.guide_language = JSON_STR_VALUE_VOICE_LANGUAGE;
this->prefs.app_id_http = JSON_STR_VALUE_VOICE_APP_ID_HTTP;
this->prefs.app_id_ws = JSON_STR_VALUE_VOICE_APP_ID_WS;
this->prefs.timeout_vrex_connect = JSON_INT_VALUE_VOICE_VREX_REQUEST_TIMEOUT;
this->prefs.timeout_vrex_session = JSON_INT_VALUE_VOICE_VREX_RESPONSE_TIMEOUT;
this->prefs.timeout_stats = JSON_INT_VALUE_VOICE_TIMEOUT_STATS;
this->prefs.timeout_packet_initial = JSON_INT_VALUE_VOICE_TIMEOUT_PACKET_INITIAL;
this->prefs.timeout_packet_subsequent = JSON_INT_VALUE_VOICE_TIMEOUT_PACKET_SUBSEQUENT;
this->prefs.bitrate_minimum = JSON_INT_VALUE_VOICE_BITRATE_MINIMUM;
this->prefs.time_threshold = JSON_INT_VALUE_VOICE_TIME_THRESHOLD;
this->prefs.utterance_save = ctrlm_is_production_build() ? JSON_ARRAY_VAL_BOOL_VOICE_SAVE_LAST_UTTERANCE_0 : JSON_ARRAY_VAL_BOOL_VOICE_SAVE_LAST_UTTERANCE_1;
this->prefs.utterance_use_curtail = JSON_BOOL_VALUE_VOICE_UTTERANCE_USE_CURTAIL;
this->prefs.utterance_file_qty_max = JSON_INT_VALUE_VOICE_UTTERANCE_FILE_QTY_MAX;
this->prefs.utterance_file_size_max = JSON_INT_VALUE_VOICE_UTTERANCE_FILE_SIZE_MAX;
this->prefs.utterance_path = JSON_STR_VALUE_VOICE_UTTERANCE_PATH;
this->prefs.utterance_duration_min = JSON_INT_VALUE_VOICE_MINIMUM_DURATION;
this->prefs.ffv_leading_samples = JSON_INT_VALUE_VOICE_FFV_LEADING_SAMPLES;
this->prefs.force_voice_settings = JSON_BOOL_VALUE_VOICE_FORCE_VOICE_SETTINGS;
this->prefs.vrex_test_flag = JSON_BOOL_VALUE_VOICE_VREX_TEST_FLAG;
this->prefs.vrex_wuw_bypass_success_flag = JSON_BOOL_VALUE_VOICE_VREX_WUW_BYPASS_SUCCESS_FLAG;
this->prefs.vrex_wuw_bypass_failure_flag = JSON_BOOL_VALUE_VOICE_VREX_WUW_BYPASS_FAILURE_FLAG;
this->prefs.force_toggle_fallback = JSON_BOOL_VALUE_VOICE_FORCE_TOGGLE_FALLBACK;
this->prefs.telemetry_session_stats = JSON_BOOL_VALUE_VOICE_TELEMETRY_SESSION_STATS;
this->prefs.par_voice_enabled = false;
this->prefs.par_voice_eos_method = JSON_INT_VALUE_VOICE_PAR_VOICE_EOS_METHOD;
this->prefs.par_voice_eos_timeout = JSON_INT_VALUE_VOICE_PAR_VOICE_EOS_TIMEOUT;
this->prefs.aspect_ratio = JSON_STR_VALUE_VOICE_ASPECT_RATIO;
this->prefs.guide_language = JSON_STR_VALUE_VOICE_LANGUAGE;
this->prefs.app_id_http = JSON_STR_VALUE_VOICE_APP_ID_HTTP;
this->prefs.app_id_ws = JSON_STR_VALUE_VOICE_APP_ID_WS;
this->prefs.timeout_vrex_connect = JSON_INT_VALUE_VOICE_VREX_REQUEST_TIMEOUT;
this->prefs.timeout_vrex_session = JSON_INT_VALUE_VOICE_VREX_RESPONSE_TIMEOUT;
this->prefs.timeout_stats = JSON_INT_VALUE_VOICE_TIMEOUT_STATS;
this->prefs.timeout_packet_initial = JSON_INT_VALUE_VOICE_TIMEOUT_PACKET_INITIAL;
this->prefs.timeout_packet_subsequent = JSON_INT_VALUE_VOICE_TIMEOUT_PACKET_SUBSEQUENT;
this->prefs.bitrate_minimum = JSON_INT_VALUE_VOICE_BITRATE_MINIMUM;
this->prefs.time_threshold = JSON_INT_VALUE_VOICE_TIME_THRESHOLD;
this->prefs.utterance_save = ctrlm_is_production_build() ? JSON_ARRAY_VAL_BOOL_VOICE_SAVE_LAST_UTTERANCE_0 : JSON_ARRAY_VAL_BOOL_VOICE_SAVE_LAST_UTTERANCE_1;
this->prefs.utterance_use_curtail = JSON_BOOL_VALUE_VOICE_UTTERANCE_USE_CURTAIL;
this->prefs.utterance_file_qty_max = JSON_INT_VALUE_VOICE_UTTERANCE_FILE_QTY_MAX;
this->prefs.utterance_file_size_max = JSON_INT_VALUE_VOICE_UTTERANCE_FILE_SIZE_MAX;
this->prefs.utterance_path = JSON_STR_VALUE_VOICE_UTTERANCE_PATH;
this->prefs.utterance_duration_min = JSON_INT_VALUE_VOICE_MINIMUM_DURATION;
this->prefs.ffv_leading_samples = JSON_INT_VALUE_VOICE_FFV_LEADING_SAMPLES;
this->prefs.voice_activity_detection_mode = this->voice_activity_detection_mode_to_xrsr(JSON_STR_VALUE_VOICE_VOICE_ACTIVITY_DETECTION_MODE);
this->prefs.force_voice_settings = JSON_BOOL_VALUE_VOICE_FORCE_VOICE_SETTINGS;
this->prefs.vrex_test_flag = JSON_BOOL_VALUE_VOICE_VREX_TEST_FLAG;
this->prefs.vrex_wuw_bypass_success_flag = JSON_BOOL_VALUE_VOICE_VREX_WUW_BYPASS_SUCCESS_FLAG;
this->prefs.vrex_wuw_bypass_failure_flag = JSON_BOOL_VALUE_VOICE_VREX_WUW_BYPASS_FAILURE_FLAG;
this->prefs.force_toggle_fallback = JSON_BOOL_VALUE_VOICE_FORCE_TOGGLE_FALLBACK;
this->prefs.telemetry_session_stats = JSON_BOOL_VALUE_VOICE_TELEMETRY_SESSION_STATS;
this->prefs.par_voice_enabled = false;
this->prefs.par_voice_eos_method = JSON_INT_VALUE_VOICE_PAR_VOICE_EOS_METHOD;
this->prefs.par_voice_eos_timeout = JSON_INT_VALUE_VOICE_PAR_VOICE_EOS_TIMEOUT;
this->voice_params_opus_encoder_default();
this->xrsr_opened = false;
this->voice_ipc = NULL;
this->packet_loss_threshold = JSON_INT_VALUE_VOICE_PACKET_LOSS_THRESHOLD;
this->vsdk_config = NULL;
this->nsm_voice_session = false;
this->xrsr_opened = false;
this->voice_ipc = NULL;
this->packet_loss_threshold = JSON_INT_VALUE_VOICE_PACKET_LOSS_THRESHOLD;
this->vsdk_config = NULL;
this->nsm_voice_session = false;

#ifndef TELEMETRY_SUPPORT
XLOGD_WARN("telemetry is not enabled");
Expand Down Expand Up @@ -261,6 +262,7 @@ ctrlm_voice_t::ctrlm_voice_t() {
this->secure_url_required = JSON_BOOL_VALUE_VOICE_REQUIRE_SECURE_URL;

XLOGD_TELEMETRY("require i_SAT <%s> i_MTLS <%s> i_secure_url <%s>", this->sat_token_required ? "YES" : "NO", this->mtls_required ? "YES" : "NO", this->secure_url_required ? "YES" : "NO");
XLOGD_INFO("voice activity detection mode <%s>", xrsr_stream_voice_activity_mode_str(this->prefs.voice_activity_detection_mode));

errno_t safec_rc = memset_s(this->sat_token, sizeof(this->sat_token), 0, sizeof(this->sat_token));
ERR_CHK(safec_rc);
Expand Down Expand Up @@ -425,6 +427,13 @@ bool ctrlm_voice_t::voice_configure_config_file_json(json_t *obj_voice, json_t *
conf.config_value_get(JSON_STR_NAME_VOICE_URL_SRC_MIC_TAP, this->prefs.server_url_src_mic_tap);
conf.config_value_get(JSON_STR_NAME_VOICE_LANGUAGE, this->prefs.guide_language);
conf.config_value_get(JSON_INT_NAME_VOICE_MINIMUM_DURATION, this->prefs.utterance_duration_min);

std::string voice_activity_detection_mode;
if(conf.config_value_get(JSON_STR_NAME_VOICE_VOICE_ACTIVITY_DETECTION_MODE, voice_activity_detection_mode)) {
this->prefs.voice_activity_detection_mode = this->voice_activity_detection_mode_to_xrsr(voice_activity_detection_mode);
XLOGD_INFO("voice activity detection mode <%s>", xrsr_stream_voice_activity_mode_str(this->prefs.voice_activity_detection_mode));
}

if(conf.config_value_get(JSON_BOOL_NAME_VOICE_ENABLE_SAT, this->sat_token_required)) {
ctrlm_sm_voice_sat_enable_write(this->sat_token_required);
XLOGD_TELEMETRY("require c_SAT <%s>", this->sat_token_required ? "YES" : "NO");
Expand Down Expand Up @@ -1089,6 +1098,17 @@ void ctrlm_voice_t::voice_params_opus_encoder_default(void) {
this->voice_params_opus_samples_per_packet_set();
}

xrsr_stream_voice_activity_mode_t ctrlm_voice_t::voice_activity_detection_mode_to_xrsr(const std::string &mode) {
// Configure voice activity detection parameters based on mode
if(mode == "enabled") { // Voice activity detection will be used but not enforced
return(XRSR_STREAM_VOICE_ACTIVITY_MODE_ENABLED);
} else if(mode == "enforced") { // Voice session will only proceed if voice activity is detected
return(XRSR_STREAM_VOICE_ACTIVITY_MODE_ENFORCED);
}
// Voice activity detection is disabled (or invalid mode)
return(XRSR_STREAM_VOICE_ACTIVITY_MODE_DISABLED);
}

void ctrlm_voice_t::voice_params_opus_samples_per_packet_set(void) {
guchar fr_dur = (this->prefs.opus_encoder_params[3] >> 4) & 0xF;
switch(fr_dur) {
Expand Down Expand Up @@ -2645,6 +2665,12 @@ void ctrlm_voice_t::voice_session_end_callback(ctrlm_voice_session_end_cb_t *ses
end.result = SESSION_END_SHORT_UTTERANCE;
end.reason = (int)session->end_reason_rcu;
this->voice_ipc->session_end(end);
} else if(stats->session_end_reason == XRSR_SESSION_END_REASON_ERROR_AUDIO_SILENT) {
ctrlm_voice_ipc_event_session_end_t end;
end.common = session->ipc_common_data;
end.result = SESSION_END_SILENT_UTTERANCE;
end.reason = (int)session->end_reason_rcu;
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this->voice_ipc->session_end(end);
} else {
ctrlm_voice_ipc_event_session_end_server_stats_t server_stats;
ctrlm_voice_ipc_event_session_end_t end;
Expand Down Expand Up @@ -2931,15 +2957,24 @@ void ctrlm_voice_t::voice_stream_end_callback(ctrlm_voice_stream_end_cb_t *strea
#ifdef TELEMETRY_SUPPORT
if(this->prefs.telemetry_session_stats) {
uint32_t packets_total = session->packets_lost + session->packets_processed;
session->telemetry_session_stats.update_on_stream_end(stream_duration, packets_total, session->packets_lost, packets_total * samples_per_packet, session->packets_lost * samples_per_packet, decoder_failures, 0);
int32_t voice_detected = -1;
uint32_t peak_confidence = 0;
int32_t peak_rms_level = 0;
if(stats->audio_stats.vad_frames_processed > 0) {
voice_detected = (stats->audio_stats.vad_voice_detected) ? 1 : 0;
peak_confidence = (stats->audio_stats.vad_confidence_peak * 100);
peak_rms_level = stats->audio_stats.vad_rms_level_peak;
}

session->telemetry_session_stats.update_on_stream_end(stream_duration, packets_total, session->packets_lost, packets_total * samples_per_packet, session->packets_lost * samples_per_packet, decoder_failures, 0, voice_detected, peak_confidence, peak_rms_level);
}
#endif
} else if(samples_processed > 0) {
uint32_t stream_duration = (samples_processed / 16); // 16 kHz samples to ms
XLOGD_INFO("src <%s> Samples Lost/Total <%u/%u> %.02f%% buffered max <%u> duration <%u> ms", ctrlm_voice_device_str(session->voice_device), samples_lost, samples_lost + samples_processed, 100.0 * ((double)samples_lost / (double)(samples_lost + samples_processed)), samples_buffered_max, stream_duration);
#ifdef TELEMETRY_SUPPORT
if(this->prefs.telemetry_session_stats) {
session->telemetry_session_stats.update_on_stream_end(stream_duration, 0, 0, samples_lost + samples_processed, samples_lost, decoder_failures, samples_buffered_max);
session->telemetry_session_stats.update_on_stream_end(stream_duration, 0, 0, samples_lost + samples_processed, samples_lost, decoder_failures, samples_buffered_max, -1, 0, 0);
}
#endif
}
Expand Down Expand Up @@ -4052,7 +4087,6 @@ void ctrlm_voice_t::voice_rfc_retrieved_handler(const ctrlm_rfc_attr_t& attr) {
attr.get_rfc_value(JSON_INT_NAME_VOICE_DST_PARAMS_STANDBY_TIMEOUT_SESSION, this->prefs.dst_params_standby.timeout_session) |
attr.get_rfc_value(JSON_BOOL_NAME_VOICE_DST_PARAMS_STANDBY_IPV4_FALLBACK, this->prefs.dst_params_standby.ipv4_fallback) |
attr.get_rfc_value(JSON_INT_NAME_VOICE_DST_PARAMS_STANDBY_BACKOFF_DELAY, this->prefs.dst_params_standby.backoff_delay) |

attr.get_rfc_value(JSON_INT_NAME_VOICE_DST_PARAMS_LOW_LATENCY_CONNECT_CHECK_INTERVAL, this->prefs.dst_params_low_latency.connect_check_interval) |
attr.get_rfc_value(JSON_INT_NAME_VOICE_DST_PARAMS_LOW_LATENCY_TIMEOUT_CONNECT, this->prefs.dst_params_low_latency.timeout_connect) |
attr.get_rfc_value(JSON_INT_NAME_VOICE_DST_PARAMS_LOW_LATENCY_TIMEOUT_INACTIVITY, this->prefs.dst_params_low_latency.timeout_inactivity) |
Expand All @@ -4062,6 +4096,13 @@ void ctrlm_voice_t::voice_rfc_retrieved_handler(const ctrlm_rfc_attr_t& attr) {
reroute = true;
}

std::string voice_activity_detection_mode;
if(attr.get_rfc_value(JSON_STR_NAME_VOICE_VOICE_ACTIVITY_DETECTION_MODE, voice_activity_detection_mode)) {
this->prefs.voice_activity_detection_mode = this->voice_activity_detection_mode_to_xrsr(voice_activity_detection_mode);
XLOGD_INFO("voice activity detection mode <%s>", xrsr_stream_voice_activity_mode_str(this->prefs.voice_activity_detection_mode));
reroute = true;
}

std::vector<std::string> obj_server_hosts;
if(attr.get_rfc_value(JSON_ARRAY_NAME_VOICE_SERVER_HOSTS, obj_server_hosts)) {
this->url_hostname_patterns(obj_server_hosts);
Expand Down
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