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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_SPEECH_FAKE_SPEECH_RECOGNITION_SERVICE_H_
#define CHROME_BROWSER_SPEECH_FAKE_SPEECH_RECOGNITION_SERVICE_H_
#include <memory>
#include <string>
#include "base/observer_list.h"
#include "chrome/browser/speech/chrome_speech_recognition_service.h"
#include "chrome/browser/speech/fake_speech_recognizer.h"
#include "media/base/audio_parameters.h"
#include "media/mojo/mojom/audio_data.mojom.h"
#include "media/mojo/mojom/speech_recognition.mojom.h"
#include "media/mojo/mojom/speech_recognition_service.mojom.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/bindings/receiver_set.h"
#include "mojo/public/cpp/bindings/remote.h"
namespace speech {
// A fake SpeechRecognitionService. This service works by creating
// FakeSpeechRecognizers as self owned receivers. If a test wants to assert
// against the state of a particular session then the fixture will need to
// implement the observer interface and add itself. When the recognizer is
// bound the fixture can then grab a reference to the recognizer and assert
// against it. Fixtures may also want to confirm that they have the correct
// recognizer by checking the recognition type in the options struct.
class FakeSpeechRecognitionService
: public SpeechRecognitionService,
public media::mojom::SpeechRecognitionContext,
public media::mojom::AudioSourceSpeechRecognitionContext {
public:
class Observer : public base::CheckedObserver {
public:
virtual void OnRecognizerBound(FakeSpeechRecognizer* bound_recognizer) = 0;
};
FakeSpeechRecognitionService();
FakeSpeechRecognitionService(const FakeSpeechRecognitionService&) = delete;
FakeSpeechRecognitionService& operator=(const SpeechRecognitionService&) =
delete;
~FakeSpeechRecognitionService() override;
// SpeechRecognitionService:
void BindSpeechRecognitionContext(
mojo::PendingReceiver<media::mojom::SpeechRecognitionContext> receiver)
override;
void BindAudioSourceSpeechRecognitionContext(
mojo::PendingReceiver<media::mojom::AudioSourceSpeechRecognitionContext>
receiver) override;
// media::mojom::SpeechRecognitionContext:
void BindRecognizer(
mojo::PendingReceiver<media::mojom::SpeechRecognitionRecognizer> receiver,
mojo::PendingRemote<media::mojom::SpeechRecognitionRecognizerClient>
client,
media::mojom::SpeechRecognitionOptionsPtr options,
BindRecognizerCallback callback) override;
void BindWebSpeechRecognizer(
mojo::PendingReceiver<media::mojom::SpeechRecognitionSession>
session_receiver,
mojo::PendingRemote<media::mojom::SpeechRecognitionSessionClient>
session_client,
mojo::PendingReceiver<media::mojom::SpeechRecognitionAudioForwarder>
audio_forwarder,
int channel_count,
int sample_rate,
media::mojom::SpeechRecognitionOptionsPtr options,
bool continuous) override;
// media::mojom::AudioSourceSpeechRecognitionContext:
void BindAudioSourceFetcher(
mojo::PendingReceiver<media::mojom::AudioSourceFetcher> fetcher_receiver,
mojo::PendingRemote<media::mojom::SpeechRecognitionRecognizerClient>
client,
media::mojom::SpeechRecognitionOptionsPtr options,
BindRecognizerCallback callback) override;
void set_multichannel_supported(bool is_multichannel_supported) {
is_multichannel_supported_ = is_multichannel_supported;
}
void AddObserver(Observer* obs) { observers_.AddObserver(obs); }
void RemoveObsever(Observer* obs) { observers_.RemoveObserver(obs); }
private:
void OnRecognizerClientDisconnected();
void OnSpeechRecognitionRecognitionEventCallback(bool success);
std::unique_ptr<FakeSpeechRecognizer> GetNextRecognizerAndBindItsRemote(
mojo::PendingRemote<media::mojom::SpeechRecognitionRecognizerClient>
client,
media::mojom::SpeechRecognitionOptionsPtr options);
// Whether multichannel audio is supported.
bool is_multichannel_supported_ = false;
mojo::ReceiverSet<media::mojom::AudioSourceSpeechRecognitionContext>
audio_source_speech_recognition_contexts_;
mojo::ReceiverSet<media::mojom::SpeechRecognitionContext>
speech_recognition_contexts_;
base::ObserverList<Observer> observers_;
};
} // namespace speech
#endif // CHROME_BROWSER_SPEECH_FAKE_SPEECH_RECOGNITION_SERVICE_H_
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