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// Copyright 2016 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_MEDIA_MEDIA_DEVICES_PERMISSION_CHECKER_H_
#define CONTENT_BROWSER_MEDIA_MEDIA_DEVICES_PERMISSION_CHECKER_H_
#include "base/functional/callback.h"
#include "content/browser/renderer_host/media/media_devices_manager.h"
#include "content/common/content_export.h"
using blink::mojom::MediaDeviceType;
namespace content {
// This class provides various utility functions to check if a render frame
// has permission to access media devices. Note that none of the methods
// prompts the user to request permission.
class CONTENT_EXPORT MediaDevicesPermissionChecker {
public:
MediaDevicesPermissionChecker();
// This constructor creates a MediaDevicesPermissionChecker that replies
// |override_value| to all permission requests. Use only for testing.
explicit MediaDevicesPermissionChecker(bool override_value);
MediaDevicesPermissionChecker(const MediaDevicesPermissionChecker&) = delete;
MediaDevicesPermissionChecker& operator=(
const MediaDevicesPermissionChecker&) = delete;
// Checks if the origin associated to a render frame identified by
// |render_process_id| and |render_frame_id| is allowed to access the media
// device type |device_type|.
// This method must be called on the UI thread.
bool CheckPermissionOnUIThread(MediaDeviceType device_type,
int render_process_id,
int render_frame_id) const;
// This function checks the state of the speaker selection and microphone
// permissions for the SelectAudioOutput API. The speaker selection state is
// returned as denied/not denied via the first parameter of `callback` and
// the microphone permission state is returned as a bool (true for allowed,
// false for not allowed) via the second parameter of `callback`.
void GetSpeakerSelectionAndMicrophonePermissionState(
int render_process_id,
int render_frame_id,
base::OnceCallback<void(MediaDevicesManager::PermissionDeniedState, bool)>
callback) const;
// Checks if the origin associated to a render frame identified by
// |render_process_id| and |render_frame_id| is allowed to access the media
// device type |device_type|. The result is passed to |callback|.
// This method can be called on any thread. |callback| is fired on the same
// thread this method is called on.
void CheckPermission(MediaDeviceType device_type,
int render_process_id,
int render_frame_id,
base::OnceCallback<void(bool)> callback) const;
// Checks if the origin associated to a render frame identified by
// |render_process_id| and |render_frame_id| is allowed to access the media
// device types marked with a value of true in |requested_device_types|. The
// result is passed to |callback|. The result is indexed by
// blink::mojom::MediaDeviceType. Entries in the result with a value of true
// for requested device types indicate that the frame has permission to access
// devices of the corresponding types. This method can be called on any
// thread. |callback| is fired on the same thread this method is called on.
void CheckPermissions(
MediaDevicesManager::BoolDeviceTypes requested_device_types,
int render_process_id,
int render_frame_id,
base::OnceCallback<void(const MediaDevicesManager::BoolDeviceTypes&)>
callback) const;
// Returns true if the origin associated to a render frame identified by
// |render_process_id| and |render_frame_id| is allowed to control camera
// movement (pan, tilt, and zoom). Otherwise, returns false.
static bool HasPanTiltZoomPermissionGrantedOnUIThread(int render_process_id,
int render_frame_id);
private:
const bool use_override_;
const bool override_value_;
};
} // namespace content
#endif // CONTENT_BROWSER_MEDIA_MEDIA_DEVICES_PERMISSION_CHECKER_H_
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