-
Notifications
You must be signed in to change notification settings - Fork 54
/
SamplesWaitingForKey.h
64 lines (48 loc) · 1.75 KB
/
SamplesWaitingForKey.h
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
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef SamplesWaitingForKey_h_
#define SamplesWaitingForKey_h_
#include "MediaInfo.h"
#include "mozilla/MozPromise.h"
#include "mozilla/Mutex.h"
#include "mozilla/RefPtr.h"
namespace mozilla {
typedef nsTArray<uint8_t> CencKeyId;
class CDMProxy;
template <typename... Es>
class MediaEventProducer;
class MediaRawData;
// Encapsulates the task of waiting for the CDMProxy to have the necessary
// keys to decrypt a given sample.
class SamplesWaitingForKey {
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(SamplesWaitingForKey)
typedef MozPromise<RefPtr<MediaRawData>, bool, /* IsExclusive = */ true>
WaitForKeyPromise;
SamplesWaitingForKey(
CDMProxy* aProxy, TrackInfo::TrackType aType,
MediaEventProducer<TrackInfo::TrackType>* aOnWaitingForKey);
// Returns a promise that will be resolved if or when a key for decoding the
// sample becomes usable.
RefPtr<WaitForKeyPromise> WaitIfKeyNotUsable(MediaRawData* aSample);
void NotifyUsable(const CencKeyId& aKeyId);
void Flush();
void BreakCycles();
protected:
~SamplesWaitingForKey();
private:
Mutex mMutex;
RefPtr<CDMProxy> mProxy;
struct SampleEntry {
RefPtr<MediaRawData> mSample;
MozPromiseHolder<WaitForKeyPromise> mPromise;
};
nsTArray<SampleEntry> mSamples;
const TrackInfo::TrackType mType;
MediaEventProducer<TrackInfo::TrackType>* const mOnWaitingForKeyEvent;
};
} // namespace mozilla
#endif // SamplesWaitingForKey_h_