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// Copyright 2024 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_RECOGNIZER_H_
#define CHROME_BROWSER_SPEECH_FAKE_SPEECH_RECOGNIZER_H_
#include "base/memory/weak_ptr.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/remote.h"
namespace speech {
// A fake SpeechRecognizer which will be a self owned receiver. Allows for
// asserting the state of a speech recognition session.
class FakeSpeechRecognizer : public media::mojom::AudioSourceFetcher,
public media::mojom::SpeechRecognitionRecognizer {
public:
FakeSpeechRecognizer();
FakeSpeechRecognizer(const FakeSpeechRecognizer&) = delete;
FakeSpeechRecognizer& operator=(const FakeSpeechRecognizer&) = delete;
~FakeSpeechRecognizer() override;
// Binds the RecognizerClient remote to this recognizer.
void BindRecognizerClientRemoteAndPassRecognitionOptions(
mojo::PendingRemote<media::mojom::SpeechRecognitionRecognizerClient>
client,
media::mojom::SpeechRecognitionOptionsPtr recognition_options);
// Methods for testing plumbing to SpeechRecognitionRecognizerClient.
void SendSpeechRecognitionResult(
const media::SpeechRecognitionResult& result);
void SendSpeechRecognitionError();
// media::mojom::SpeechRecognitionRecognizer:
void SendAudioToSpeechRecognitionService(
media::mojom::AudioDataS16Ptr buffer,
std::optional<base::TimeDelta> media_start_pts) override;
void OnLanguageChanged(const std::string& language) override {}
void OnMaskOffensiveWordsChanged(bool mask_offensive_words) override {}
void MarkDone() override;
void UpdateRecognitionContext(
const media::SpeechRecognitionRecognitionContext& recognition_context)
override {}
// media::mojom::AudioSourceFetcher:
void Start(
mojo::PendingRemote<media::mojom::AudioStreamFactory> stream_factory,
const std::string& device_id,
const ::media::AudioParameters& audio_parameters) override;
void Stop() override;
// Halts test execution until after start has been called.
void WaitForRecognitionStarted();
// Whether AudioSourceFetcher is capturing audio.
bool is_capturing_audio() { return capturing_audio_; }
// Device ID used by the AudioSource Fetcher.
std::string device_id() { return device_id_; }
// Speech recognition options passed to this Recognizer.
const media::mojom::SpeechRecognitionOptions* recognition_options() const {
return recognition_options_.get();
}
// Audio parameters passed to this recognizer.
const std::optional<::media::AudioParameters>& audio_parameters() const {
return audio_parameters_;
}
base::WeakPtr<FakeSpeechRecognizer> GetWeakPtr() {
return weak_ptr_factory_.GetWeakPtr();
}
private:
// Bind a client to this audio fetcher.
void BindSpeechRecognizerClientRemote(
mojo::PendingRemote<media::mojom::SpeechRecognitionRecognizerClient>
client);
void OnSpeechRecognitionEventCallback(bool success);
base::OnceClosure recognition_started_closure_;
// Speech recognition options passed to this recognizer.
media::mojom::SpeechRecognitionOptionsPtr recognition_options_;
// Audio parameters associated with this recognizer.
std::optional<::media::AudioParameters> audio_parameters_;
// Whether the recognizer has been started.
bool capturing_audio_ = false;
// Whether or not the recognizer has received audio.
bool has_received_audio_ = false;
// The device ID used to capture audio.
std::string device_id_;
// Client tied to this fetcher.
mojo::Remote<media::mojom::SpeechRecognitionRecognizerClient>
recognizer_client_remote_;
base::WeakPtrFactory<FakeSpeechRecognizer> weak_ptr_factory_{this};
};
} // namespace speech
#endif // CHROME_BROWSER_SPEECH_FAKE_SPEECH_RECOGNIZER_H_
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