blob: 92c4fa2ad1b6a781b99ae9d7ccbf97442e57915e (
plain)
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
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
/*
* Copyright 2018 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef MODULES_DESKTOP_CAPTURE_TAB_CAPTURER_H_
#define MODULES_DESKTOP_CAPTURE_TAB_CAPTURER_H_
#include "api/sequence_checker.h"
#include "modules/desktop_capture/desktop_capturer.h"
#include "mozilla/MozPromise.h"
#include "nsDeque.h"
#include "nsThreadUtils.h"
namespace mozilla {
namespace dom {
struct ImageBitmapCloneData;
} // namespace dom
class CaptureFrameRequest;
class TabCapturedHandler;
class TaskQueue;
class TabCapturerWebrtc : public webrtc::DesktopCapturer {
protected:
TabCapturerWebrtc(SourceId aSourceId,
nsCOMPtr<nsISerialEventTarget> aCaptureThread);
~TabCapturerWebrtc();
public:
friend class CaptureFrameRequest;
friend class TabCapturedHandler;
static std::unique_ptr<webrtc::DesktopCapturer> Create(
SourceId aSourceId, nsCOMPtr<nsISerialEventTarget> aCaptureThread);
TabCapturerWebrtc(const TabCapturerWebrtc&) = delete;
TabCapturerWebrtc& operator=(const TabCapturerWebrtc&) = delete;
// DesktopCapturer interface.
void Start(Callback* aCallback) override;
void CaptureFrame() override;
bool GetSourceList(SourceList* aSources) override;
bool SelectSource(SourceId) override;
bool FocusOnSelectedSource() override;
bool IsOccluded(const webrtc::DesktopVector& aPos) override;
private:
// Capture code
using CapturePromise =
MozPromise<UniquePtr<dom::ImageBitmapCloneData>, nsresult, true>;
RefPtr<CapturePromise> CaptureFrameNow();
// Helper that checks for overrun requests. Returns true if aRequest had not
// been dropped due to disconnection or overrun.
// Note that if this returns true, the caller takes the responsibility to call
// mCallback with a capture result for aRequest.
bool CompleteRequest(CaptureFrameRequest* aRequest);
// Helper that disconnects the request, and notifies mCallback of a temporary
// failure.
void DisconnectRequest(CaptureFrameRequest* aRequest);
// Handle the result from the async callback from CaptureFrameNow.
void OnCaptureFrameSuccess(UniquePtr<dom::ImageBitmapCloneData> aData);
void OnCaptureFrameFailure();
const uint64_t mBrowserId;
const RefPtr<TaskQueue> mMainThreadWorker;
const RefPtr<TaskQueue> mCallbackWorker;
webrtc::SequenceChecker mControlChecker;
webrtc::SequenceChecker mCallbackChecker;
// Set in Start() and guaranteed by the owner of this class to outlive us.
webrtc::DesktopCapturer::Callback* mCallback
RTC_GUARDED_BY(mCallbackChecker) = nullptr;
// mCallbackWorker only
nsRefPtrDeque<CaptureFrameRequest> mRequests RTC_GUARDED_BY(mCallbackChecker);
};
} // namespace mozilla
#endif // MODULES_DESKTOP_CAPTURE_TAB_CAPTURER_H_
|
