|  | /* | 
|  | *  Copyright (c) 2018 The WebRTC project authors. All Rights Reserved. | 
|  | * | 
|  | *  Use of this source code is governed by a BSD-style license | 
|  | *  that can be found in the LICENSE file in the root of the source | 
|  | *  tree. An additional intellectual property rights grant can be found | 
|  | *  in the file PATENTS.  All contributing project authors may | 
|  | *  be found in the AUTHORS file in the root of the source tree. | 
|  | */ | 
|  | #include "modules/audio_processing/test/echo_canceller3_config_json.h" | 
|  |  | 
|  | #include <cstddef> | 
|  | #include <memory> | 
|  | #include <string> | 
|  | #include <vector> | 
|  |  | 
|  | #include "absl/strings/string_view.h" | 
|  | #include "api/audio/echo_canceller3_config.h" | 
|  | #include "rtc_base/checks.h" | 
|  | #include "rtc_base/logging.h" | 
|  | #include "rtc_base/strings/json.h" | 
|  | #include "rtc_base/strings/string_builder.h" | 
|  |  | 
|  | namespace webrtc { | 
|  | namespace { | 
|  | void ReadParam(const Json::Value& root, std::string param_name, bool* param) { | 
|  | RTC_DCHECK(param); | 
|  | bool v; | 
|  | if (GetBoolFromJsonObject(root, param_name, &v)) { | 
|  | *param = v; | 
|  | } | 
|  | } | 
|  |  | 
|  | void ReadParam(const Json::Value& root, std::string param_name, size_t* param) { | 
|  | RTC_DCHECK(param); | 
|  | int v; | 
|  | if (GetIntFromJsonObject(root, param_name, &v) && v >= 0) { | 
|  | *param = v; | 
|  | } | 
|  | } | 
|  |  | 
|  | void ReadParam(const Json::Value& root, std::string param_name, int* param) { | 
|  | RTC_DCHECK(param); | 
|  | int v; | 
|  | if (GetIntFromJsonObject(root, param_name, &v)) { | 
|  | *param = v; | 
|  | } | 
|  | } | 
|  |  | 
|  | void ReadParam(const Json::Value& root, std::string param_name, float* param) { | 
|  | RTC_DCHECK(param); | 
|  | double v; | 
|  | if (GetDoubleFromJsonObject(root, param_name, &v)) { | 
|  | *param = static_cast<float>(v); | 
|  | } | 
|  | } | 
|  |  | 
|  | void ReadParam(const Json::Value& root, | 
|  | std::string param_name, | 
|  | EchoCanceller3Config::Filter::RefinedConfiguration* param) { | 
|  | RTC_DCHECK(param); | 
|  | Json::Value json_array; | 
|  | if (GetValueFromJsonObject(root, param_name, &json_array)) { | 
|  | std::vector<double> v; | 
|  | JsonArrayToDoubleVector(json_array, &v); | 
|  | if (v.size() != 6) { | 
|  | RTC_LOG(LS_ERROR) << "Incorrect array size for " << param_name; | 
|  | return; | 
|  | } | 
|  | param->length_blocks = static_cast<size_t>(v[0]); | 
|  | param->leakage_converged = static_cast<float>(v[1]); | 
|  | param->leakage_diverged = static_cast<float>(v[2]); | 
|  | param->error_floor = static_cast<float>(v[3]); | 
|  | param->error_ceil = static_cast<float>(v[4]); | 
|  | param->noise_gate = static_cast<float>(v[5]); | 
|  | } | 
|  | } | 
|  |  | 
|  | void ReadParam(const Json::Value& root, | 
|  | std::string param_name, | 
|  | EchoCanceller3Config::Filter::CoarseConfiguration* param) { | 
|  | RTC_DCHECK(param); | 
|  | Json::Value json_array; | 
|  | if (GetValueFromJsonObject(root, param_name, &json_array)) { | 
|  | std::vector<double> v; | 
|  | JsonArrayToDoubleVector(json_array, &v); | 
|  | if (v.size() != 3) { | 
|  | RTC_LOG(LS_ERROR) << "Incorrect array size for " << param_name; | 
|  | return; | 
|  | } | 
|  | param->length_blocks = static_cast<size_t>(v[0]); | 
|  | param->rate = static_cast<float>(v[1]); | 
|  | param->noise_gate = static_cast<float>(v[2]); | 
|  | } | 
|  | } | 
|  |  | 
|  | void ReadParam(const Json::Value& root, | 
|  | std::string param_name, | 
|  | EchoCanceller3Config::Delay::AlignmentMixing* param) { | 
|  | RTC_DCHECK(param); | 
|  |  | 
|  | Json::Value subsection; | 
|  | if (GetValueFromJsonObject(root, param_name, &subsection)) { | 
|  | ReadParam(subsection, "downmix", ¶m->downmix); | 
|  | ReadParam(subsection, "adaptive_selection", ¶m->adaptive_selection); | 
|  | ReadParam(subsection, "activity_power_threshold", | 
|  | ¶m->activity_power_threshold); | 
|  | ReadParam(subsection, "prefer_first_two_channels", | 
|  | ¶m->prefer_first_two_channels); | 
|  | } | 
|  | } | 
|  |  | 
|  | void ReadParam( | 
|  | const Json::Value& root, | 
|  | std::string param_name, | 
|  | EchoCanceller3Config::Suppressor::SubbandNearendDetection::SubbandRegion* | 
|  | param) { | 
|  | RTC_DCHECK(param); | 
|  | Json::Value json_array; | 
|  | if (GetValueFromJsonObject(root, param_name, &json_array)) { | 
|  | std::vector<int> v; | 
|  | JsonArrayToIntVector(json_array, &v); | 
|  | if (v.size() != 2) { | 
|  | RTC_LOG(LS_ERROR) << "Incorrect array size for " << param_name; | 
|  | return; | 
|  | } | 
|  | param->low = static_cast<size_t>(v[0]); | 
|  | param->high = static_cast<size_t>(v[1]); | 
|  | } | 
|  | } | 
|  |  | 
|  | void ReadParam(const Json::Value& root, | 
|  | std::string param_name, | 
|  | EchoCanceller3Config::Suppressor::MaskingThresholds* param) { | 
|  | RTC_DCHECK(param); | 
|  | Json::Value json_array; | 
|  | if (GetValueFromJsonObject(root, param_name, &json_array)) { | 
|  | std::vector<double> v; | 
|  | JsonArrayToDoubleVector(json_array, &v); | 
|  | if (v.size() != 3) { | 
|  | RTC_LOG(LS_ERROR) << "Incorrect array size for " << param_name; | 
|  | return; | 
|  | } | 
|  | param->enr_transparent = static_cast<float>(v[0]); | 
|  | param->enr_suppress = static_cast<float>(v[1]); | 
|  | param->emr_transparent = static_cast<float>(v[2]); | 
|  | } | 
|  | } | 
|  | }  // namespace | 
|  |  | 
|  | void Aec3ConfigFromJsonString(absl::string_view json_string, | 
|  | EchoCanceller3Config* config, | 
|  | bool* parsing_successful) { | 
|  | RTC_DCHECK(config); | 
|  | RTC_DCHECK(parsing_successful); | 
|  | EchoCanceller3Config& cfg = *config; | 
|  | cfg = EchoCanceller3Config(); | 
|  | *parsing_successful = true; | 
|  |  | 
|  | Json::Value root; | 
|  | Json::CharReaderBuilder builder; | 
|  | std::string error_message; | 
|  | std::unique_ptr<Json::CharReader> reader(builder.newCharReader()); | 
|  | bool success = | 
|  | reader->parse(json_string.data(), json_string.data() + json_string.size(), | 
|  | &root, &error_message); | 
|  | if (!success) { | 
|  | RTC_LOG(LS_ERROR) << "Incorrect JSON format: " << error_message; | 
|  | *parsing_successful = false; | 
|  | return; | 
|  | } | 
|  |  | 
|  | Json::Value aec3_root; | 
|  | success = GetValueFromJsonObject(root, "aec3", &aec3_root); | 
|  | if (!success) { | 
|  | RTC_LOG(LS_ERROR) << "Missing AEC3 config field: " << json_string; | 
|  | *parsing_successful = false; | 
|  | return; | 
|  | } | 
|  |  | 
|  | Json::Value section; | 
|  | if (GetValueFromJsonObject(aec3_root, "buffering", §ion)) { | 
|  | ReadParam(section, "excess_render_detection_interval_blocks", | 
|  | &cfg.buffering.excess_render_detection_interval_blocks); | 
|  | ReadParam(section, "max_allowed_excess_render_blocks", | 
|  | &cfg.buffering.max_allowed_excess_render_blocks); | 
|  | } | 
|  |  | 
|  | if (GetValueFromJsonObject(aec3_root, "delay", §ion)) { | 
|  | ReadParam(section, "default_delay", &cfg.delay.default_delay); | 
|  | ReadParam(section, "down_sampling_factor", &cfg.delay.down_sampling_factor); | 
|  | ReadParam(section, "num_filters", &cfg.delay.num_filters); | 
|  | ReadParam(section, "delay_headroom_samples", | 
|  | &cfg.delay.delay_headroom_samples); | 
|  | ReadParam(section, "hysteresis_limit_blocks", | 
|  | &cfg.delay.hysteresis_limit_blocks); | 
|  | ReadParam(section, "fixed_capture_delay_samples", | 
|  | &cfg.delay.fixed_capture_delay_samples); | 
|  | ReadParam(section, "delay_estimate_smoothing", | 
|  | &cfg.delay.delay_estimate_smoothing); | 
|  | ReadParam(section, "delay_estimate_smoothing_delay_found", | 
|  | &cfg.delay.delay_estimate_smoothing_delay_found); | 
|  | ReadParam(section, "delay_candidate_detection_threshold", | 
|  | &cfg.delay.delay_candidate_detection_threshold); | 
|  |  | 
|  | Json::Value subsection; | 
|  | if (GetValueFromJsonObject(section, "delay_selection_thresholds", | 
|  | &subsection)) { | 
|  | ReadParam(subsection, "initial", | 
|  | &cfg.delay.delay_selection_thresholds.initial); | 
|  | ReadParam(subsection, "converged", | 
|  | &cfg.delay.delay_selection_thresholds.converged); | 
|  | } | 
|  |  | 
|  | ReadParam(section, "use_external_delay_estimator", | 
|  | &cfg.delay.use_external_delay_estimator); | 
|  | ReadParam(section, "log_warning_on_delay_changes", | 
|  | &cfg.delay.log_warning_on_delay_changes); | 
|  |  | 
|  | ReadParam(section, "render_alignment_mixing", | 
|  | &cfg.delay.render_alignment_mixing); | 
|  | ReadParam(section, "capture_alignment_mixing", | 
|  | &cfg.delay.capture_alignment_mixing); | 
|  | ReadParam(section, "detect_pre_echo", &cfg.delay.detect_pre_echo); | 
|  | } | 
|  |  | 
|  | if (GetValueFromJsonObject(aec3_root, "filter", §ion)) { | 
|  | ReadParam(section, "refined", &cfg.filter.refined); | 
|  | ReadParam(section, "coarse", &cfg.filter.coarse); | 
|  | ReadParam(section, "refined_initial", &cfg.filter.refined_initial); | 
|  | ReadParam(section, "coarse_initial", &cfg.filter.coarse_initial); | 
|  | ReadParam(section, "config_change_duration_blocks", | 
|  | &cfg.filter.config_change_duration_blocks); | 
|  | ReadParam(section, "initial_state_seconds", | 
|  | &cfg.filter.initial_state_seconds); | 
|  | ReadParam(section, "coarse_reset_hangover_blocks", | 
|  | &cfg.filter.coarse_reset_hangover_blocks); | 
|  | ReadParam(section, "conservative_initial_phase", | 
|  | &cfg.filter.conservative_initial_phase); | 
|  | ReadParam(section, "enable_coarse_filter_output_usage", | 
|  | &cfg.filter.enable_coarse_filter_output_usage); | 
|  | ReadParam(section, "use_linear_filter", &cfg.filter.use_linear_filter); | 
|  | ReadParam(section, "high_pass_filter_echo_reference", | 
|  | &cfg.filter.high_pass_filter_echo_reference); | 
|  | ReadParam(section, "export_linear_aec_output", | 
|  | &cfg.filter.export_linear_aec_output); | 
|  | } | 
|  |  | 
|  | if (GetValueFromJsonObject(aec3_root, "erle", §ion)) { | 
|  | ReadParam(section, "min", &cfg.erle.min); | 
|  | ReadParam(section, "max_l", &cfg.erle.max_l); | 
|  | ReadParam(section, "max_h", &cfg.erle.max_h); | 
|  | ReadParam(section, "onset_detection", &cfg.erle.onset_detection); | 
|  | ReadParam(section, "num_sections", &cfg.erle.num_sections); | 
|  | ReadParam(section, "clamp_quality_estimate_to_zero", | 
|  | &cfg.erle.clamp_quality_estimate_to_zero); | 
|  | ReadParam(section, "clamp_quality_estimate_to_one", | 
|  | &cfg.erle.clamp_quality_estimate_to_one); | 
|  | } | 
|  |  | 
|  | if (GetValueFromJsonObject(aec3_root, "ep_strength", §ion)) { | 
|  | ReadParam(section, "default_gain", &cfg.ep_strength.default_gain); | 
|  | ReadParam(section, "default_len", &cfg.ep_strength.default_len); | 
|  | ReadParam(section, "nearend_len", &cfg.ep_strength.nearend_len); | 
|  | ReadParam(section, "echo_can_saturate", &cfg.ep_strength.echo_can_saturate); | 
|  | ReadParam(section, "bounded_erl", &cfg.ep_strength.bounded_erl); | 
|  | ReadParam(section, "erle_onset_compensation_in_dominant_nearend", | 
|  | &cfg.ep_strength.erle_onset_compensation_in_dominant_nearend); | 
|  | ReadParam(section, "use_conservative_tail_frequency_response", | 
|  | &cfg.ep_strength.use_conservative_tail_frequency_response); | 
|  | } | 
|  |  | 
|  | if (GetValueFromJsonObject(aec3_root, "echo_audibility", §ion)) { | 
|  | ReadParam(section, "low_render_limit", | 
|  | &cfg.echo_audibility.low_render_limit); | 
|  | ReadParam(section, "normal_render_limit", | 
|  | &cfg.echo_audibility.normal_render_limit); | 
|  |  | 
|  | ReadParam(section, "floor_power", &cfg.echo_audibility.floor_power); | 
|  | ReadParam(section, "audibility_threshold_lf", | 
|  | &cfg.echo_audibility.audibility_threshold_lf); | 
|  | ReadParam(section, "audibility_threshold_mf", | 
|  | &cfg.echo_audibility.audibility_threshold_mf); | 
|  | ReadParam(section, "audibility_threshold_hf", | 
|  | &cfg.echo_audibility.audibility_threshold_hf); | 
|  | ReadParam(section, "use_stationarity_properties", | 
|  | &cfg.echo_audibility.use_stationarity_properties); | 
|  | ReadParam(section, "use_stationarity_properties_at_init", | 
|  | &cfg.echo_audibility.use_stationarity_properties_at_init); | 
|  | } | 
|  |  | 
|  | if (GetValueFromJsonObject(aec3_root, "render_levels", §ion)) { | 
|  | ReadParam(section, "active_render_limit", | 
|  | &cfg.render_levels.active_render_limit); | 
|  | ReadParam(section, "poor_excitation_render_limit", | 
|  | &cfg.render_levels.poor_excitation_render_limit); | 
|  | ReadParam(section, "poor_excitation_render_limit_ds8", | 
|  | &cfg.render_levels.poor_excitation_render_limit_ds8); | 
|  | ReadParam(section, "render_power_gain_db", | 
|  | &cfg.render_levels.render_power_gain_db); | 
|  | } | 
|  |  | 
|  | if (GetValueFromJsonObject(aec3_root, "echo_removal_control", §ion)) { | 
|  | ReadParam(section, "has_clock_drift", | 
|  | &cfg.echo_removal_control.has_clock_drift); | 
|  | ReadParam(section, "linear_and_stable_echo_path", | 
|  | &cfg.echo_removal_control.linear_and_stable_echo_path); | 
|  | } | 
|  |  | 
|  | if (GetValueFromJsonObject(aec3_root, "echo_model", §ion)) { | 
|  | Json::Value subsection; | 
|  | ReadParam(section, "noise_floor_hold", &cfg.echo_model.noise_floor_hold); | 
|  | ReadParam(section, "min_noise_floor_power", | 
|  | &cfg.echo_model.min_noise_floor_power); | 
|  | ReadParam(section, "stationary_gate_slope", | 
|  | &cfg.echo_model.stationary_gate_slope); | 
|  | ReadParam(section, "noise_gate_power", &cfg.echo_model.noise_gate_power); | 
|  | ReadParam(section, "noise_gate_slope", &cfg.echo_model.noise_gate_slope); | 
|  | ReadParam(section, "render_pre_window_size", | 
|  | &cfg.echo_model.render_pre_window_size); | 
|  | ReadParam(section, "render_post_window_size", | 
|  | &cfg.echo_model.render_post_window_size); | 
|  | ReadParam(section, "model_reverb_in_nonlinear_mode", | 
|  | &cfg.echo_model.model_reverb_in_nonlinear_mode); | 
|  | } | 
|  |  | 
|  | if (GetValueFromJsonObject(aec3_root, "comfort_noise", §ion)) { | 
|  | ReadParam(section, "noise_floor_dbfs", &cfg.comfort_noise.noise_floor_dbfs); | 
|  | } | 
|  |  | 
|  | Json::Value subsection; | 
|  | if (GetValueFromJsonObject(aec3_root, "suppressor", §ion)) { | 
|  | ReadParam(section, "nearend_average_blocks", | 
|  | &cfg.suppressor.nearend_average_blocks); | 
|  |  | 
|  | if (GetValueFromJsonObject(section, "normal_tuning", &subsection)) { | 
|  | ReadParam(subsection, "mask_lf", &cfg.suppressor.normal_tuning.mask_lf); | 
|  | ReadParam(subsection, "mask_hf", &cfg.suppressor.normal_tuning.mask_hf); | 
|  | ReadParam(subsection, "max_inc_factor", | 
|  | &cfg.suppressor.normal_tuning.max_inc_factor); | 
|  | ReadParam(subsection, "max_dec_factor_lf", | 
|  | &cfg.suppressor.normal_tuning.max_dec_factor_lf); | 
|  | } | 
|  |  | 
|  | if (GetValueFromJsonObject(section, "nearend_tuning", &subsection)) { | 
|  | ReadParam(subsection, "mask_lf", &cfg.suppressor.nearend_tuning.mask_lf); | 
|  | ReadParam(subsection, "mask_hf", &cfg.suppressor.nearend_tuning.mask_hf); | 
|  | ReadParam(subsection, "max_inc_factor", | 
|  | &cfg.suppressor.nearend_tuning.max_inc_factor); | 
|  | ReadParam(subsection, "max_dec_factor_lf", | 
|  | &cfg.suppressor.nearend_tuning.max_dec_factor_lf); | 
|  | } | 
|  |  | 
|  | ReadParam(section, "lf_smoothing_during_initial_phase", | 
|  | &cfg.suppressor.lf_smoothing_during_initial_phase); | 
|  | ReadParam(section, "last_permanent_lf_smoothing_band", | 
|  | &cfg.suppressor.last_permanent_lf_smoothing_band); | 
|  | ReadParam(section, "last_lf_smoothing_band", | 
|  | &cfg.suppressor.last_lf_smoothing_band); | 
|  | ReadParam(section, "last_lf_band", &cfg.suppressor.last_lf_band); | 
|  | ReadParam(section, "first_hf_band", &cfg.suppressor.first_hf_band); | 
|  |  | 
|  | if (GetValueFromJsonObject(section, "dominant_nearend_detection", | 
|  | &subsection)) { | 
|  | ReadParam(subsection, "enr_threshold", | 
|  | &cfg.suppressor.dominant_nearend_detection.enr_threshold); | 
|  | ReadParam(subsection, "enr_exit_threshold", | 
|  | &cfg.suppressor.dominant_nearend_detection.enr_exit_threshold); | 
|  | ReadParam(subsection, "snr_threshold", | 
|  | &cfg.suppressor.dominant_nearend_detection.snr_threshold); | 
|  | ReadParam(subsection, "hold_duration", | 
|  | &cfg.suppressor.dominant_nearend_detection.hold_duration); | 
|  | ReadParam(subsection, "trigger_threshold", | 
|  | &cfg.suppressor.dominant_nearend_detection.trigger_threshold); | 
|  | ReadParam( | 
|  | subsection, "use_during_initial_phase", | 
|  | &cfg.suppressor.dominant_nearend_detection.use_during_initial_phase); | 
|  | ReadParam(subsection, "use_unbounded_echo_spectrum", | 
|  | &cfg.suppressor.dominant_nearend_detection | 
|  | .use_unbounded_echo_spectrum); | 
|  | } | 
|  |  | 
|  | if (GetValueFromJsonObject(section, "subband_nearend_detection", | 
|  | &subsection)) { | 
|  | ReadParam( | 
|  | subsection, "nearend_average_blocks", | 
|  | &cfg.suppressor.subband_nearend_detection.nearend_average_blocks); | 
|  | ReadParam(subsection, "subband1", | 
|  | &cfg.suppressor.subband_nearend_detection.subband1); | 
|  | ReadParam(subsection, "subband2", | 
|  | &cfg.suppressor.subband_nearend_detection.subband2); | 
|  | ReadParam(subsection, "nearend_threshold", | 
|  | &cfg.suppressor.subband_nearend_detection.nearend_threshold); | 
|  | ReadParam(subsection, "snr_threshold", | 
|  | &cfg.suppressor.subband_nearend_detection.snr_threshold); | 
|  | } | 
|  |  | 
|  | ReadParam(section, "use_subband_nearend_detection", | 
|  | &cfg.suppressor.use_subband_nearend_detection); | 
|  |  | 
|  | if (GetValueFromJsonObject(section, "high_bands_suppression", | 
|  | &subsection)) { | 
|  | ReadParam(subsection, "enr_threshold", | 
|  | &cfg.suppressor.high_bands_suppression.enr_threshold); | 
|  | ReadParam(subsection, "max_gain_during_echo", | 
|  | &cfg.suppressor.high_bands_suppression.max_gain_during_echo); | 
|  | ReadParam(subsection, "anti_howling_activation_threshold", | 
|  | &cfg.suppressor.high_bands_suppression | 
|  | .anti_howling_activation_threshold); | 
|  | ReadParam(subsection, "anti_howling_gain", | 
|  | &cfg.suppressor.high_bands_suppression.anti_howling_gain); | 
|  | } | 
|  |  | 
|  | ReadParam(section, "floor_first_increase", | 
|  | &cfg.suppressor.floor_first_increase); | 
|  | ReadParam(section, "conservative_hf_suppression", | 
|  | &cfg.suppressor.conservative_hf_suppression); | 
|  | } | 
|  |  | 
|  | if (GetValueFromJsonObject(aec3_root, "multi_channel", §ion)) { | 
|  | ReadParam(section, "detect_stereo_content", | 
|  | &cfg.multi_channel.detect_stereo_content); | 
|  | ReadParam(section, "stereo_detection_threshold", | 
|  | &cfg.multi_channel.stereo_detection_threshold); | 
|  | ReadParam(section, "stereo_detection_timeout_threshold_seconds", | 
|  | &cfg.multi_channel.stereo_detection_timeout_threshold_seconds); | 
|  | ReadParam(section, "stereo_detection_hysteresis_seconds", | 
|  | &cfg.multi_channel.stereo_detection_hysteresis_seconds); | 
|  | } | 
|  | } | 
|  |  | 
|  | std::string Aec3ConfigToJsonString(const EchoCanceller3Config& config) { | 
|  | StringBuilder ost; | 
|  | ost << "{"; | 
|  | ost << "\"aec3\": {"; | 
|  | ost << "\"buffering\": {"; | 
|  | ost << "\"excess_render_detection_interval_blocks\": " | 
|  | << config.buffering.excess_render_detection_interval_blocks << ","; | 
|  | ost << "\"max_allowed_excess_render_blocks\": " | 
|  | << config.buffering.max_allowed_excess_render_blocks; | 
|  | ost << "},"; | 
|  |  | 
|  | ost << "\"delay\": {"; | 
|  | ost << "\"default_delay\": " << config.delay.default_delay << ","; | 
|  | ost << "\"down_sampling_factor\": " << config.delay.down_sampling_factor | 
|  | << ","; | 
|  | ost << "\"num_filters\": " << config.delay.num_filters << ","; | 
|  | ost << "\"delay_headroom_samples\": " << config.delay.delay_headroom_samples | 
|  | << ","; | 
|  | ost << "\"hysteresis_limit_blocks\": " << config.delay.hysteresis_limit_blocks | 
|  | << ","; | 
|  | ost << "\"fixed_capture_delay_samples\": " | 
|  | << config.delay.fixed_capture_delay_samples << ","; | 
|  | ost << "\"delay_estimate_smoothing\": " | 
|  | << config.delay.delay_estimate_smoothing << ","; | 
|  | ost << "\"delay_estimate_smoothing_delay_found\": " | 
|  | << config.delay.delay_estimate_smoothing_delay_found << ","; | 
|  | ost << "\"delay_candidate_detection_threshold\": " | 
|  | << config.delay.delay_candidate_detection_threshold << ","; | 
|  |  | 
|  | ost << "\"delay_selection_thresholds\": {"; | 
|  | ost << "\"initial\": " << config.delay.delay_selection_thresholds.initial | 
|  | << ","; | 
|  | ost << "\"converged\": " << config.delay.delay_selection_thresholds.converged; | 
|  | ost << "},"; | 
|  |  | 
|  | ost << "\"use_external_delay_estimator\": " | 
|  | << (config.delay.use_external_delay_estimator ? "true" : "false") << ","; | 
|  | ost << "\"log_warning_on_delay_changes\": " | 
|  | << (config.delay.log_warning_on_delay_changes ? "true" : "false") << ","; | 
|  |  | 
|  | ost << "\"render_alignment_mixing\": {"; | 
|  | ost << "\"downmix\": " | 
|  | << (config.delay.render_alignment_mixing.downmix ? "true" : "false") | 
|  | << ","; | 
|  | ost << "\"adaptive_selection\": " | 
|  | << (config.delay.render_alignment_mixing.adaptive_selection ? "true" | 
|  | : "false") | 
|  | << ","; | 
|  | ost << "\"activity_power_threshold\": " | 
|  | << config.delay.render_alignment_mixing.activity_power_threshold << ","; | 
|  | ost << "\"prefer_first_two_channels\": " | 
|  | << (config.delay.render_alignment_mixing.prefer_first_two_channels | 
|  | ? "true" | 
|  | : "false"); | 
|  | ost << "},"; | 
|  |  | 
|  | ost << "\"capture_alignment_mixing\": {"; | 
|  | ost << "\"downmix\": " | 
|  | << (config.delay.capture_alignment_mixing.downmix ? "true" : "false") | 
|  | << ","; | 
|  | ost << "\"adaptive_selection\": " | 
|  | << (config.delay.capture_alignment_mixing.adaptive_selection ? "true" | 
|  | : "false") | 
|  | << ","; | 
|  | ost << "\"activity_power_threshold\": " | 
|  | << config.delay.capture_alignment_mixing.activity_power_threshold << ","; | 
|  | ost << "\"prefer_first_two_channels\": " | 
|  | << (config.delay.capture_alignment_mixing.prefer_first_two_channels | 
|  | ? "true" | 
|  | : "false"); | 
|  | ost << "},"; | 
|  | ost << "\"detect_pre_echo\": " | 
|  | << (config.delay.detect_pre_echo ? "true" : "false"); | 
|  | ost << "},"; | 
|  |  | 
|  | ost << "\"filter\": {"; | 
|  |  | 
|  | ost << "\"refined\": ["; | 
|  | ost << config.filter.refined.length_blocks << ","; | 
|  | ost << config.filter.refined.leakage_converged << ","; | 
|  | ost << config.filter.refined.leakage_diverged << ","; | 
|  | ost << config.filter.refined.error_floor << ","; | 
|  | ost << config.filter.refined.error_ceil << ","; | 
|  | ost << config.filter.refined.noise_gate; | 
|  | ost << "],"; | 
|  |  | 
|  | ost << "\"coarse\": ["; | 
|  | ost << config.filter.coarse.length_blocks << ","; | 
|  | ost << config.filter.coarse.rate << ","; | 
|  | ost << config.filter.coarse.noise_gate; | 
|  | ost << "],"; | 
|  |  | 
|  | ost << "\"refined_initial\": ["; | 
|  | ost << config.filter.refined_initial.length_blocks << ","; | 
|  | ost << config.filter.refined_initial.leakage_converged << ","; | 
|  | ost << config.filter.refined_initial.leakage_diverged << ","; | 
|  | ost << config.filter.refined_initial.error_floor << ","; | 
|  | ost << config.filter.refined_initial.error_ceil << ","; | 
|  | ost << config.filter.refined_initial.noise_gate; | 
|  | ost << "],"; | 
|  |  | 
|  | ost << "\"coarse_initial\": ["; | 
|  | ost << config.filter.coarse_initial.length_blocks << ","; | 
|  | ost << config.filter.coarse_initial.rate << ","; | 
|  | ost << config.filter.coarse_initial.noise_gate; | 
|  | ost << "],"; | 
|  |  | 
|  | ost << "\"config_change_duration_blocks\": " | 
|  | << config.filter.config_change_duration_blocks << ","; | 
|  | ost << "\"initial_state_seconds\": " << config.filter.initial_state_seconds | 
|  | << ","; | 
|  | ost << "\"coarse_reset_hangover_blocks\": " | 
|  | << config.filter.coarse_reset_hangover_blocks << ","; | 
|  | ost << "\"conservative_initial_phase\": " | 
|  | << (config.filter.conservative_initial_phase ? "true" : "false") << ","; | 
|  | ost << "\"enable_coarse_filter_output_usage\": " | 
|  | << (config.filter.enable_coarse_filter_output_usage ? "true" : "false") | 
|  | << ","; | 
|  | ost << "\"use_linear_filter\": " | 
|  | << (config.filter.use_linear_filter ? "true" : "false") << ","; | 
|  | ost << "\"high_pass_filter_echo_reference\": " | 
|  | << (config.filter.high_pass_filter_echo_reference ? "true" : "false") | 
|  | << ","; | 
|  | ost << "\"export_linear_aec_output\": " | 
|  | << (config.filter.export_linear_aec_output ? "true" : "false"); | 
|  |  | 
|  | ost << "},"; | 
|  |  | 
|  | ost << "\"erle\": {"; | 
|  | ost << "\"min\": " << config.erle.min << ","; | 
|  | ost << "\"max_l\": " << config.erle.max_l << ","; | 
|  | ost << "\"max_h\": " << config.erle.max_h << ","; | 
|  | ost << "\"onset_detection\": " | 
|  | << (config.erle.onset_detection ? "true" : "false") << ","; | 
|  | ost << "\"num_sections\": " << config.erle.num_sections << ","; | 
|  | ost << "\"clamp_quality_estimate_to_zero\": " | 
|  | << (config.erle.clamp_quality_estimate_to_zero ? "true" : "false") << ","; | 
|  | ost << "\"clamp_quality_estimate_to_one\": " | 
|  | << (config.erle.clamp_quality_estimate_to_one ? "true" : "false"); | 
|  | ost << "},"; | 
|  |  | 
|  | ost << "\"ep_strength\": {"; | 
|  | ost << "\"default_gain\": " << config.ep_strength.default_gain << ","; | 
|  | ost << "\"default_len\": " << config.ep_strength.default_len << ","; | 
|  | ost << "\"nearend_len\": " << config.ep_strength.nearend_len << ","; | 
|  | ost << "\"echo_can_saturate\": " | 
|  | << (config.ep_strength.echo_can_saturate ? "true" : "false") << ","; | 
|  | ost << "\"bounded_erl\": " | 
|  | << (config.ep_strength.bounded_erl ? "true" : "false") << ","; | 
|  | ost << "\"erle_onset_compensation_in_dominant_nearend\": " | 
|  | << (config.ep_strength.erle_onset_compensation_in_dominant_nearend | 
|  | ? "true" | 
|  | : "false") | 
|  | << ","; | 
|  | ost << "\"use_conservative_tail_frequency_response\": " | 
|  | << (config.ep_strength.use_conservative_tail_frequency_response | 
|  | ? "true" | 
|  | : "false"); | 
|  | ost << "},"; | 
|  |  | 
|  | ost << "\"echo_audibility\": {"; | 
|  | ost << "\"low_render_limit\": " << config.echo_audibility.low_render_limit | 
|  | << ","; | 
|  | ost << "\"normal_render_limit\": " | 
|  | << config.echo_audibility.normal_render_limit << ","; | 
|  | ost << "\"floor_power\": " << config.echo_audibility.floor_power << ","; | 
|  | ost << "\"audibility_threshold_lf\": " | 
|  | << config.echo_audibility.audibility_threshold_lf << ","; | 
|  | ost << "\"audibility_threshold_mf\": " | 
|  | << config.echo_audibility.audibility_threshold_mf << ","; | 
|  | ost << "\"audibility_threshold_hf\": " | 
|  | << config.echo_audibility.audibility_threshold_hf << ","; | 
|  | ost << "\"use_stationarity_properties\": " | 
|  | << (config.echo_audibility.use_stationarity_properties ? "true" : "false") | 
|  | << ","; | 
|  | ost << "\"use_stationarity_properties_at_init\": " | 
|  | << (config.echo_audibility.use_stationarity_properties_at_init ? "true" | 
|  | : "false"); | 
|  | ost << "},"; | 
|  |  | 
|  | ost << "\"render_levels\": {"; | 
|  | ost << "\"active_render_limit\": " << config.render_levels.active_render_limit | 
|  | << ","; | 
|  | ost << "\"poor_excitation_render_limit\": " | 
|  | << config.render_levels.poor_excitation_render_limit << ","; | 
|  | ost << "\"poor_excitation_render_limit_ds8\": " | 
|  | << config.render_levels.poor_excitation_render_limit_ds8 << ","; | 
|  | ost << "\"render_power_gain_db\": " | 
|  | << config.render_levels.render_power_gain_db; | 
|  | ost << "},"; | 
|  |  | 
|  | ost << "\"echo_removal_control\": {"; | 
|  | ost << "\"has_clock_drift\": " | 
|  | << (config.echo_removal_control.has_clock_drift ? "true" : "false") | 
|  | << ","; | 
|  | ost << "\"linear_and_stable_echo_path\": " | 
|  | << (config.echo_removal_control.linear_and_stable_echo_path ? "true" | 
|  | : "false"); | 
|  |  | 
|  | ost << "},"; | 
|  |  | 
|  | ost << "\"echo_model\": {"; | 
|  | ost << "\"noise_floor_hold\": " << config.echo_model.noise_floor_hold << ","; | 
|  | ost << "\"min_noise_floor_power\": " | 
|  | << config.echo_model.min_noise_floor_power << ","; | 
|  | ost << "\"stationary_gate_slope\": " | 
|  | << config.echo_model.stationary_gate_slope << ","; | 
|  | ost << "\"noise_gate_power\": " << config.echo_model.noise_gate_power << ","; | 
|  | ost << "\"noise_gate_slope\": " << config.echo_model.noise_gate_slope << ","; | 
|  | ost << "\"render_pre_window_size\": " | 
|  | << config.echo_model.render_pre_window_size << ","; | 
|  | ost << "\"render_post_window_size\": " | 
|  | << config.echo_model.render_post_window_size << ","; | 
|  | ost << "\"model_reverb_in_nonlinear_mode\": " | 
|  | << (config.echo_model.model_reverb_in_nonlinear_mode ? "true" : "false"); | 
|  | ost << "},"; | 
|  |  | 
|  | ost << "\"comfort_noise\": {"; | 
|  | ost << "\"noise_floor_dbfs\": " << config.comfort_noise.noise_floor_dbfs; | 
|  | ost << "},"; | 
|  |  | 
|  | ost << "\"suppressor\": {"; | 
|  | ost << "\"nearend_average_blocks\": " | 
|  | << config.suppressor.nearend_average_blocks << ","; | 
|  | ost << "\"normal_tuning\": {"; | 
|  | ost << "\"mask_lf\": ["; | 
|  | ost << config.suppressor.normal_tuning.mask_lf.enr_transparent << ","; | 
|  | ost << config.suppressor.normal_tuning.mask_lf.enr_suppress << ","; | 
|  | ost << config.suppressor.normal_tuning.mask_lf.emr_transparent; | 
|  | ost << "],"; | 
|  | ost << "\"mask_hf\": ["; | 
|  | ost << config.suppressor.normal_tuning.mask_hf.enr_transparent << ","; | 
|  | ost << config.suppressor.normal_tuning.mask_hf.enr_suppress << ","; | 
|  | ost << config.suppressor.normal_tuning.mask_hf.emr_transparent; | 
|  | ost << "],"; | 
|  | ost << "\"max_inc_factor\": " | 
|  | << config.suppressor.normal_tuning.max_inc_factor << ","; | 
|  | ost << "\"max_dec_factor_lf\": " | 
|  | << config.suppressor.normal_tuning.max_dec_factor_lf; | 
|  | ost << "},"; | 
|  | ost << "\"nearend_tuning\": {"; | 
|  | ost << "\"mask_lf\": ["; | 
|  | ost << config.suppressor.nearend_tuning.mask_lf.enr_transparent << ","; | 
|  | ost << config.suppressor.nearend_tuning.mask_lf.enr_suppress << ","; | 
|  | ost << config.suppressor.nearend_tuning.mask_lf.emr_transparent; | 
|  | ost << "],"; | 
|  | ost << "\"mask_hf\": ["; | 
|  | ost << config.suppressor.nearend_tuning.mask_hf.enr_transparent << ","; | 
|  | ost << config.suppressor.nearend_tuning.mask_hf.enr_suppress << ","; | 
|  | ost << config.suppressor.nearend_tuning.mask_hf.emr_transparent; | 
|  | ost << "],"; | 
|  | ost << "\"max_inc_factor\": " | 
|  | << config.suppressor.nearend_tuning.max_inc_factor << ","; | 
|  | ost << "\"max_dec_factor_lf\": " | 
|  | << config.suppressor.nearend_tuning.max_dec_factor_lf; | 
|  | ost << "},"; | 
|  | ost << "\"lf_smoothing_during_initial_phase\": " | 
|  | << (config.suppressor.lf_smoothing_during_initial_phase ? "true" | 
|  | : "false") | 
|  | << ","; | 
|  | ost << "\"last_permanent_lf_smoothing_band\": " | 
|  | << config.suppressor.last_permanent_lf_smoothing_band << ","; | 
|  | ost << "\"last_lf_smoothing_band\": " | 
|  | << config.suppressor.last_lf_smoothing_band << ","; | 
|  | ost << "\"last_lf_band\": " << config.suppressor.last_lf_band << ","; | 
|  | ost << "\"first_hf_band\": " << config.suppressor.first_hf_band << ","; | 
|  | { | 
|  | const auto& dnd = config.suppressor.dominant_nearend_detection; | 
|  | ost << "\"dominant_nearend_detection\": {"; | 
|  | ost << "\"enr_threshold\": " << dnd.enr_threshold << ","; | 
|  | ost << "\"enr_exit_threshold\": " << dnd.enr_exit_threshold << ","; | 
|  | ost << "\"snr_threshold\": " << dnd.snr_threshold << ","; | 
|  | ost << "\"hold_duration\": " << dnd.hold_duration << ","; | 
|  | ost << "\"trigger_threshold\": " << dnd.trigger_threshold << ","; | 
|  | ost << "\"use_during_initial_phase\": " << dnd.use_during_initial_phase | 
|  | << ","; | 
|  | ost << "\"use_unbounded_echo_spectrum\": " | 
|  | << dnd.use_unbounded_echo_spectrum; | 
|  | ost << "},"; | 
|  | } | 
|  | ost << "\"subband_nearend_detection\": {"; | 
|  | ost << "\"nearend_average_blocks\": " | 
|  | << config.suppressor.subband_nearend_detection.nearend_average_blocks | 
|  | << ","; | 
|  | ost << "\"subband1\": ["; | 
|  | ost << config.suppressor.subband_nearend_detection.subband1.low << ","; | 
|  | ost << config.suppressor.subband_nearend_detection.subband1.high; | 
|  | ost << "],"; | 
|  | ost << "\"subband2\": ["; | 
|  | ost << config.suppressor.subband_nearend_detection.subband2.low << ","; | 
|  | ost << config.suppressor.subband_nearend_detection.subband2.high; | 
|  | ost << "],"; | 
|  | ost << "\"nearend_threshold\": " | 
|  | << config.suppressor.subband_nearend_detection.nearend_threshold << ","; | 
|  | ost << "\"snr_threshold\": " | 
|  | << config.suppressor.subband_nearend_detection.snr_threshold; | 
|  | ost << "},"; | 
|  | ost << "\"use_subband_nearend_detection\": " | 
|  | << config.suppressor.use_subband_nearend_detection << ","; | 
|  | ost << "\"high_bands_suppression\": {"; | 
|  | ost << "\"enr_threshold\": " | 
|  | << config.suppressor.high_bands_suppression.enr_threshold << ","; | 
|  | ost << "\"max_gain_during_echo\": " | 
|  | << config.suppressor.high_bands_suppression.max_gain_during_echo << ","; | 
|  | ost << "\"anti_howling_activation_threshold\": " | 
|  | << config.suppressor.high_bands_suppression | 
|  | .anti_howling_activation_threshold | 
|  | << ","; | 
|  | ost << "\"anti_howling_gain\": " | 
|  | << config.suppressor.high_bands_suppression.anti_howling_gain; | 
|  | ost << "},"; | 
|  | ost << "\"floor_first_increase\": " << config.suppressor.floor_first_increase | 
|  | << ","; | 
|  | ost << "\"conservative_hf_suppression\": " | 
|  | << config.suppressor.conservative_hf_suppression; | 
|  | ost << "},"; | 
|  |  | 
|  | ost << "\"multi_channel\": {"; | 
|  | ost << "\"detect_stereo_content\": " | 
|  | << (config.multi_channel.detect_stereo_content ? "true" : "false") << ","; | 
|  | ost << "\"stereo_detection_threshold\": " | 
|  | << config.multi_channel.stereo_detection_threshold << ","; | 
|  | ost << "\"stereo_detection_timeout_threshold_seconds\": " | 
|  | << config.multi_channel.stereo_detection_timeout_threshold_seconds << ","; | 
|  | ost << "\"stereo_detection_hysteresis_seconds\": " | 
|  | << config.multi_channel.stereo_detection_hysteresis_seconds; | 
|  | ost << "}"; | 
|  |  | 
|  | ost << "}"; | 
|  | ost << "}"; | 
|  |  | 
|  | return ost.Release(); | 
|  | } | 
|  | }  // namespace webrtc |