1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
content / browser / media / media_internals_cdm_helper.h [blame]
// 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 CONTENT_BROWSER_MEDIA_MEDIA_INTERNALS_CDM_HELPER_H_
#define CONTENT_BROWSER_MEDIA_MEDIA_INTERNALS_CDM_HELPER_H_
#include "base/callback_list.h"
#include "base/memory/weak_ptr.h"
#include "content/browser/media/cdm_registry_impl.h"
#include "content/public/common/cdm_info.h"
namespace content {
// Manages the "CDMs" tab on about://media-internals.
class MediaInternalsCdmHelper {
public:
MediaInternalsCdmHelper();
MediaInternalsCdmHelper(const MediaInternalsCdmHelper&) = delete;
MediaInternalsCdmHelper& operator=(const MediaInternalsCdmHelper&) = delete;
~MediaInternalsCdmHelper();
// Get information on all registered CDMs and update the "CDMs" tab on
// about://media-internals.
void GetRegisteredCdms();
private:
void OnKeySystemCapabilitiesUpdated(KeySystemCapabilities capabilities);
// Callback subscription to keep the callback alive in the CdmRegistry.
base::CallbackListSubscription cb_subscription_;
base::WeakPtrFactory<MediaInternalsCdmHelper> weak_factory_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_MEDIA_MEDIA_INTERNALS_CDM_HELPER_H_