tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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dxgi_frame.h (2162B)

      1 /*
      2 *  Copyright (c) 2017 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 MODULES_DESKTOP_CAPTURE_WIN_DXGI_FRAME_H_
     12 #define MODULES_DESKTOP_CAPTURE_WIN_DXGI_FRAME_H_
     13 
     14 #include <memory>
     15 
     16 #include "modules/desktop_capture/desktop_capture_types.h"
     17 #include "modules/desktop_capture/desktop_capturer.h"
     18 #include "modules/desktop_capture/desktop_geometry.h"
     19 #include "modules/desktop_capture/resolution_tracker.h"
     20 #include "modules/desktop_capture/shared_desktop_frame.h"
     21 #include "modules/desktop_capture/shared_memory.h"
     22 #include "modules/desktop_capture/win/dxgi_context.h"
     23 
     24 namespace webrtc {
     25 
     26 class DxgiDuplicatorController;
     27 
     28 // A pair of a SharedDesktopFrame and a DxgiDuplicatorController::Context for
     29 // the client of DxgiDuplicatorController.
     30 class DxgiFrame final {
     31 public:
     32  using Context = DxgiFrameContext;
     33 
     34  // DxgiFrame does not take ownership of `factory`, consumers should ensure it
     35  // outlives this instance. nullptr is acceptable.
     36  explicit DxgiFrame(SharedMemoryFactory* factory);
     37  ~DxgiFrame();
     38 
     39  // Should not be called if Prepare() is not executed or returns false.
     40  SharedDesktopFrame* frame() const;
     41 
     42 private:
     43  // Allows DxgiDuplicatorController to access Prepare() and context() function
     44  // as well as Context class.
     45  friend class DxgiDuplicatorController;
     46 
     47  // Prepares current instance with desktop size and source id.
     48  bool Prepare(DesktopSize size, DesktopCapturer::SourceId source_id);
     49 
     50  // Should not be called if Prepare() is not executed or returns false.
     51  Context* context();
     52 
     53  SharedMemoryFactory* const factory_;
     54  ResolutionTracker resolution_tracker_;
     55  DesktopCapturer::SourceId source_id_ = kFullDesktopScreenId;
     56  std::unique_ptr<SharedDesktopFrame> frame_;
     57  Context context_;
     58 };
     59 
     60 }  // namespace webrtc
     61 
     62 #endif  // MODULES_DESKTOP_CAPTURE_WIN_DXGI_FRAME_H_