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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// MediaPermission implementation which dispatches queries/requests to Mojo
// PermissionService. It relies on its base class MediaPermissionDispatcher to
// manage pending callbacks. Non-UI threads could create
// MediaPermissionDispatcherProxy by calling CreateProxy such that calls will be
// executed on the UI thread which is where this object lives.
#ifndef CONTENT_RENDERER_MEDIA_MEDIA_PERMISSION_DISPATCHER_IMPL_H_
#define CONTENT_RENDERER_MEDIA_MEDIA_PERMISSION_DISPATCHER_IMPL_H_
#include <stdint.h>
#include <map>
#include "base/macros.h"
#include "base/single_thread_task_runner.h"
#include "base/threading/thread_checker.h"
#include "content/common/content_export.h"
#include "content/common/permission_service.mojom.h"
#include "content/public/renderer/render_frame_observer.h"
#include "content/renderer/media/media_permission_dispatcher.h"
#include "media/base/media_permission.h"
namespace content {
class CONTENT_EXPORT MediaPermissionDispatcherImpl
: public MediaPermissionDispatcher,
public RenderFrameObserver {
public:
explicit MediaPermissionDispatcherImpl(RenderFrame* render_frame);
~MediaPermissionDispatcherImpl() override;
// media::MediaPermission implementation.
void HasPermission(Type type,
const GURL& security_origin,
const PermissionStatusCB& permission_status_cb) override;
// MediaStreamDevicePermissionContext doesn't support RequestPermission yet
// and will always return CONTENT_SETTING_BLOCK.
void RequestPermission(
Type type,
const GURL& security_origin,
const PermissionStatusCB& permission_status_cb) override;
// Create MediaPermissionDispatcherProxy object which will dispatch the
// callback between the |caller_task_runner| and |task_runner_| in a thread
// safe way. This can be called from non-UI thread.
scoped_ptr<media::MediaPermission> CreateProxy(
scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner);
private:
// Callback for |permission_service_| calls.
void OnPermissionStatus(uint32_t request_id, PermissionStatus status);
const scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
PermissionServicePtr permission_service_;
base::WeakPtrFactory<MediaPermissionDispatcherImpl> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(MediaPermissionDispatcherImpl);
};
} // namespace content
#endif // CONTENT_RENDERER_MEDIA_MEDIA_PERMISSION_DISPATCHER_IMPL_H_
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