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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 CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_SESSION_H_
#define CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_SESSION_H_
#include <memory>
#include "base/memory/weak_ptr.h"
#include "content/browser/speech/speech_recognition_manager_impl.h"
#include "content/public/browser/speech_recognition_event_listener.h"
#include "media/mojo/mojom/speech_recognizer.mojom.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/remote.h"
namespace content {
// SpeechRecognitionSession implements the
// media::mojom::SpeechRecognitionSession interface for a particular session. It
// also acts as a proxy for events sent from SpeechRecognitionManager, and
// forwards the events to the renderer using a
// mojo::Remote<SpeechRecognitionSessionClient> (that is passed from the render
// process).
class SpeechRecognitionSession : public media::mojom::SpeechRecognitionSession,
public SpeechRecognitionEventListener {
public:
explicit SpeechRecognitionSession(
mojo::PendingRemote<media::mojom::SpeechRecognitionSessionClient> client);
~SpeechRecognitionSession() override;
base::WeakPtr<SpeechRecognitionSession> AsWeakPtr();
void SetSessionId(int session_id) { session_id_ = session_id; }
// media::mojom::SpeechRecognitionSession implementation.
void Abort() override;
void StopCapture() override;
void UpdateRecognitionContext(
const media::SpeechRecognitionRecognitionContext& recognition_context)
override;
// SpeechRecognitionEventListener methods.
void OnRecognitionStart(int session_id) override;
void OnAudioStart(int session_id) override;
void OnSoundStart(int session_id) override;
void OnSoundEnd(int session_id) override;
void OnAudioEnd(int session_id) override;
void OnRecognitionEnd(int session_id) override;
void OnRecognitionResults(
int session_id,
const std::vector<media::mojom::WebSpeechRecognitionResultPtr>& results)
override;
void OnRecognitionError(
int session_id,
const media::mojom::SpeechRecognitionError& error) override;
void OnAudioLevelsChange(int session_id,
float volume,
float noise_volume) override;
private:
void ConnectionErrorHandler();
int session_id_ = SpeechRecognitionManager::kSessionIDInvalid;
mojo::Remote<media::mojom::SpeechRecognitionSessionClient> client_;
bool stopped_ = false;
base::WeakPtrFactory<SpeechRecognitionSession> weak_factory_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_SESSION_H_
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