chrome_speech_recognition_client.cc

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/renderer/media/chrome_speech_recognition_client.h"

#include <utility>

#include "base/metrics/histogram_functions.h"
#include "base/task/bind_post_task.h"
#include "base/time/time.h"
#include "content/public/renderer/render_frame.h"
#include "content/public/renderer/render_frame_observer.h"
#include "media/audio/reconfigurable_audio_bus_pool.h"
#include "media/base/audio_bus.h"
#include "media/base/audio_parameters.h"
#include "media/base/audio_timestamp_helper.h"
#include "media/base/channel_mixer.h"
#include "media/mojo/mojom/audio_data.mojom.h"
#include "media/mojo/mojom/media_types.mojom.h"
#include "third_party/blink/public/platform/browser_interface_broker_proxy.h"

// Preallocate 500ms worth of buffers when using a ReconfigurableAudioBusPool.
constexpr base::TimeDelta kAudioBusPoolDuration = …;

ChromeSpeechRecognitionClient::ChromeSpeechRecognitionClient(
    content::RenderFrame* render_frame)
    : … { … }

ChromeSpeechRecognitionClient::~ChromeSpeechRecognitionClient() = default;

void ChromeSpeechRecognitionClient::AddAudio(
    scoped_refptr<media::AudioBuffer> buffer) { … }

void ChromeSpeechRecognitionClient::AddAudio(const media::AudioBus& audio_bus) { … }

bool ChromeSpeechRecognitionClient::IsSpeechRecognitionAvailable() { … }

// The OnReadyCallback is set by the owner of |this| and is executed when speech
// recognition becomes available. Setting the callback will override any
// existing callback.
void ChromeSpeechRecognitionClient::SetOnReadyCallback(
    SpeechRecognitionClient::OnReadyCallback callback) { … }

void ChromeSpeechRecognitionClient::Reconfigure(
    const media::AudioParameters& audio_parameters) { … }

void ChromeSpeechRecognitionClient::OnRecognizerBound(
    bool is_multichannel_supported) { … }

void ChromeSpeechRecognitionClient::SpeechRecognitionAvailabilityChanged(
    bool is_speech_recognition_available) { … }

void ChromeSpeechRecognitionClient::SpeechRecognitionLanguageChanged(
    const std::string& language) { … }

void ChromeSpeechRecognitionClient::SpeechRecognitionMaskOffensiveWordsChanged(
    bool mask_offensive_words) { … }

void ChromeSpeechRecognitionClient::OnDestruct() { … }

void ChromeSpeechRecognitionClient::Initialize() { … }

void ChromeSpeechRecognitionClient::Reset() { … }

void ChromeSpeechRecognitionClient::AddAudioBusOnMainSequence(
    std::unique_ptr<media::AudioBus> audio_bus,
    int sample_rate,
    media::ChannelLayout channel_layout) { … }
void ChromeSpeechRecognitionClient::SendAudioToSpeechRecognitionService(
    media::mojom::AudioDataS16Ptr audio_data) { … }

void ChromeSpeechRecognitionClient::OnRecognizerDisconnected() { … }
chromium/chrome/renderer/media/chrome_speech_recognition_client.cc
