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// Copyright 2012 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_DISPATCHER_HOST_H_
#define CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_DISPATCHER_HOST_H_
#include <memory>
#include <string>
#include "base/memory/weak_ptr.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/speech_recognition_event_listener.h"
#include "media/mojo/mojom/speech_recognizer.mojom.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/remote.h"
namespace network {
class PendingSharedURLLoaderFactory;
}
namespace url {
class Origin;
}
namespace content {
class SpeechRecognitionManager;
// SpeechRecognitionDispatcherHost is an implementation of the SpeechRecognizer
// interface that allows a RenderFrame to start a speech recognition session
// in the browser process, by communicating with SpeechRecognitionManager.
class SpeechRecognitionDispatcherHost : public media::mojom::SpeechRecognizer {
public:
SpeechRecognitionDispatcherHost(int render_process_id, int render_frame_id);
SpeechRecognitionDispatcherHost(const SpeechRecognitionDispatcherHost&) =
delete;
SpeechRecognitionDispatcherHost& operator=(
const SpeechRecognitionDispatcherHost&) = delete;
~SpeechRecognitionDispatcherHost() override;
static void Create(
int render_process_id,
int render_frame_id,
mojo::PendingReceiver<media::mojom::SpeechRecognizer> receiver);
base::WeakPtr<SpeechRecognitionDispatcherHost> AsWeakPtr();
// media::mojom::SpeechRecognizer implementation
void Start(
media::mojom::StartSpeechRecognitionRequestParamsPtr params) override;
private:
static void StartRequestOnUI(
base::WeakPtr<SpeechRecognitionDispatcherHost>
speech_recognition_dispatcher_host,
int render_process_id,
int render_frame_id,
media::mojom::StartSpeechRecognitionRequestParamsPtr params);
void StartSessionOnIO(
media::mojom::StartSpeechRecognitionRequestParamsPtr params,
int embedder_render_process_id,
int embedder_render_frame_id,
const url::Origin& origin,
std::unique_ptr<network::PendingSharedURLLoaderFactory>
pending_shared_url_loader_factory,
const std::string& accept_language);
const int render_process_id_;
const int render_frame_id_;
// Used for posting asynchronous tasks (on the IO thread) without worrying
// about this class being destroyed in the meanwhile (due to browser shutdown)
// since tasks pending on a destroyed WeakPtr are automatically discarded.
base::WeakPtrFactory<SpeechRecognitionDispatcherHost> weak_factory_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_DISPATCHER_HOST_H_
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