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// Copyright 2021 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_APPS_APP_SERVICE_MEDIA_REQUESTS_H_
#define CHROME_BROWSER_APPS_APP_SERVICE_MEDIA_REQUESTS_H_
#include <map>
#include <optional>
#include <set>
#include <string>
#include "base/memory/raw_ptr.h"
#include "content/public/browser/media_request_state.h"
#include "content/public/browser/web_contents.h"
#include "third_party/blink/public/common/mediastream/media_stream_request.h"
namespace apps {
struct AccessingRequest {
AccessingRequest(std::optional<bool> camera, std::optional<bool> microphone);
AccessingRequest(const AccessingRequest&) = delete;
AccessingRequest& operator=(const AccessingRequest&) = delete;
AccessingRequest(AccessingRequest&&);
AccessingRequest& operator=(AccessingRequest&&);
~AccessingRequest();
std::optional<bool> camera;
std::optional<bool> microphone;
};
// MediaRequests tracks the media usage for each app (e.g. accessing camera,
// microphone) on a per-WebContents basis.
class MediaRequests {
public:
MediaRequests();
~MediaRequests();
MediaRequests(const MediaRequests&) = delete;
MediaRequests& operator=(const MediaRequests&) = delete;
// Updates media request state to indicate that the app represented by
// `app_id` is/isn't accessing the microphone in the given `web_contents`.
// Returns an AccessingRequest with the updated tracked state for the app.
AccessingRequest UpdateMicrophoneState(
const std::string& app_id,
const content::WebContents* web_contents,
bool is_accessing_microphone);
// Updates media request state to indicate that the app represented by
// `app_id` is/isn't accessing the camera in the given `web_contents`. Returns
// an AccessingRequest with the updated tracked state for the app.
AccessingRequest UpdateCameraState(const std::string& app_id,
const content::WebContents* web_contents,
bool is_accessing_camera);
// Removes requests in |app_id_to_web_contents_for_camera_| and
// |app_id_to_web_contents_for_microphone_| for the given |app_id|. If there
// are media accessing requests for |app_id|, returns false for
// AccessingRequest.camera or AccessingRequest.microphone.
AccessingRequest RemoveRequests(const std::string& app_id);
private:
// Web contents which are accessing the cemera or microphone.
using WebContents =
std::set<raw_ptr<const content::WebContents, SetExperimental>>;
// Maps one app id to a set of web contents.
using AppIdToWebContents = std::map<std::string, WebContents>;
std::optional<bool> MaybeAddRequest(
const std::string& app_id,
const content::WebContents* web_contents,
AppIdToWebContents& app_id_to_web_contents);
std::optional<bool> MaybeRemoveRequest(
const std::string& app_id,
const content::WebContents* web_contents,
AppIdToWebContents& app_id_to_web_contents);
std::optional<bool> MaybeRemoveRequest(
const std::string& app_id,
AppIdToWebContents& app_id_to_web_contents);
// Maps one app id to a set of web contents which are accessing the camera.
AppIdToWebContents app_id_to_web_contents_for_camera_;
// Maps one app id to a set of web contents which are accessing the
// microphone.
AppIdToWebContents app_id_to_web_contents_for_microphone_;
};
} // namespace apps
#endif // CHROME_BROWSER_APPS_APP_SERVICE_MEDIA_REQUESTS_H_
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