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100 lines
2.8 KiB
Plaintext
100 lines
2.8 KiB
Plaintext
// Copyright 2018 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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module audio.mojom;
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import "mojo/public/mojom/base/file.mojom";
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import "mojo/public/mojom/base/time.mojom";
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import "mojo/public/mojom/base/unguessable_token.mojom";
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struct AudioProcessingStats {
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bool typing_noise_detected;
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// (https://crbug.com/657632) Numeric values can't be optional, so add flags
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// for each of them.
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bool has_echo_return_loss;
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double echo_return_loss;
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bool has_echo_return_loss_enhancement;
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double echo_return_loss_enhancement;
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bool has_divergent_filter_fraction;
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double divergent_filter_fraction;
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bool has_delay_median_ms;
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int32 delay_median_ms;
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bool has_delay_standard_deviation_ms;
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int32 delay_standard_deviation_ms;
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bool has_residual_echo_likelihood;
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double residual_echo_likelihood;
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bool has_residual_echo_likelihood_recent_max;
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double residual_echo_likelihood_recent_max;
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bool has_delay_ms;
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int32 delay_ms;
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};
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enum AutomaticGainControlType {
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kDisabled,
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kDefault,
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kExperimental,
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kHybridExperimental
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};
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enum EchoCancellationType {
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kDisabled,
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kAec2,
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kAec3,
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kSystemAec
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};
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enum NoiseSuppressionType {
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kDisabled,
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kDefault,
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kExperimental
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};
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struct AudioProcessingSettings {
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EchoCancellationType echo_cancellation;
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NoiseSuppressionType noise_suppression;
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AutomaticGainControlType automatic_gain_control;
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bool high_pass_filter;
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bool typing_detection;
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bool stereo_mirroring;
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};
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// This interface is hosted in the audio service and called from the renderer.
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// It is only used when running the audio service out of process.
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interface AudioProcessorControls {
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// Request the latest stats from the audio processor. At the farthest level,
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// this is triggered by calls from JavaScript, through some levels of
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// indirection. (See: https://www.w3.org/TR/webrtc-stats/). Since there are no
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// guarantees in the standard about the rate at which stats change, it is
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// reasonable to let multiple user-facing calls result in just one call to
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// this function.
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GetStats() => (AudioProcessingStats stats);
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// Begin dumping echo cancellation data into |file|. AEC dumps can be
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// initiated by the user and then be used to track audio quality issues before
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// and after audio processing.
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StartEchoCancellationDump(mojo_base.mojom.File file);
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// Stop any ongoing dump of echo cancellation data.
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StopEchoCancellationDump();
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};
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struct AudioProcessingConfig {
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// Used for getting stats and controlling AEC dumps.
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AudioProcessorControls& controls_request;
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// Used for connecting streams to the audio processor.
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mojo_base.mojom.UnguessableToken processing_id;
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// Used for determining which kind of audio processing is enabled.
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AudioProcessingSettings settings;
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};
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