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Side by Side Diff: webrtc/modules/desktop_capture/screen_capturer.h

Issue 2490063002: Remove ScreenCapturer and WindowCapturer (Closed)
Patch Set: Created 4 years, 1 month ago
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1 /*
2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #ifndef WEBRTC_MODULES_DESKTOP_CAPTURE_SCREEN_CAPTURER_H_
12 #define WEBRTC_MODULES_DESKTOP_CAPTURE_SCREEN_CAPTURER_H_
13
14 #include <vector>
15
16 #include "webrtc/modules/desktop_capture/desktop_capture_types.h"
17 #include "webrtc/modules/desktop_capture/desktop_capturer.h"
18 #include "webrtc/typedefs.h"
19
20 namespace webrtc {
21
22 class DesktopCaptureOptions;
23
24 // TODO(zijiehe): Remove this class.
25 // Class used to capture video frames asynchronously.
26 //
27 // The full capture sequence is as follows:
28 //
29 // (1) Start
30 // This is when pre-capture steps are executed, such as flagging the
31 // display to prevent it from sleeping during a session.
32 //
33 // (2) CaptureFrame
34 // This is where the bits for the invalid rects are packaged up and sent
35 // to the encoder.
36 // A screen capture is performed if needed. For example, Windows requires
37 // a capture to calculate the diff from the previous screen, whereas the
38 // Mac version does not.
39 //
40 // Implementation has to ensure the following guarantees:
41 // 1. Double buffering
42 // Since data can be read while another capture action is happening.
43 class ScreenCapturer : public DesktopCapturer {
44 public:
45 // Use a struct to represent a screen although it has only an id for now,
46 // because we may want to add more fields (e.g. description) in the future.
47 struct Screen {
48 ScreenId id;
49 };
50 typedef std::vector<Screen> ScreenList;
51
52 ~ScreenCapturer() override;
53
54 // Creates a platform-specific capturer.
55 static ScreenCapturer* Create(const DesktopCaptureOptions& options);
56
57 // Deprecated, use GetSourceList().
58 // Get the list of screens (not containing kFullDesktopScreenId). Returns
59 // false in case of a failure.
60 virtual bool GetScreenList(ScreenList* screens);
61
62 // Deprecated, use SelectSource().
63 // Select the screen to be captured. Returns false in case of a failure (e.g.
64 // if there is no screen with the specified id). If this is never called, the
65 // full desktop is captured.
66 virtual bool SelectScreen(ScreenId id);
67
68 // DesktopCapturer interfaces.
69 bool GetSourceList(SourceList* sources) override;
70 bool SelectSource(SourceId id) override;
71 };
72
73 } // namespace webrtc
74
75 #endif // WEBRTC_MODULES_DESKTOP_CAPTURE_SCREEN_CAPTURER_H_
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