dxgi_frame.h - mozsearch

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/*

 *  Copyright (c) 2017 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_WIN_DXGI_FRAME_H_

#define MODULES_DESKTOP_CAPTURE_WIN_DXGI_FRAME_H_

#include <memory>

#include <vector>

#include "modules/desktop_capture/desktop_capture_types.h"

#include "modules/desktop_capture/desktop_capturer.h"

#include "modules/desktop_capture/desktop_geometry.h"

#include "modules/desktop_capture/resolution_tracker.h"

#include "modules/desktop_capture/shared_desktop_frame.h"

#include "modules/desktop_capture/shared_memory.h"

#include "modules/desktop_capture/win/dxgi_context.h"

namespace webrtc {

class DxgiDuplicatorController;

// A pair of a SharedDesktopFrame and a DxgiDuplicatorController::Context for

// the client of DxgiDuplicatorController.

class DxgiFrame final {

 public:

  using Context = DxgiFrameContext;

  // DxgiFrame does not take ownership of `factory`, consumers should ensure it

  // outlives this instance. nullptr is acceptable.

  explicit DxgiFrame(SharedMemoryFactory* factory);

  ~DxgiFrame();

  // Should not be called if Prepare() is not executed or returns false.

  SharedDesktopFrame* frame() const;

 private:

  // Allows DxgiDuplicatorController to access Prepare() and context() function

  // as well as Context class.

  friend class DxgiDuplicatorController;

  // Prepares current instance with desktop size and source id.

  bool Prepare(DesktopSize size, DesktopCapturer::SourceId source_id);

  // Should not be called if Prepare() is not executed or returns false.

  Context* context();

  SharedMemoryFactory* const factory_;

  ResolutionTracker resolution_tracker_;

  DesktopCapturer::SourceId source_id_ = kFullDesktopScreenId;

  std::unique_ptr<SharedDesktopFrame> frame_;

  Context context_;

};

}  // namespace webrtc

#endif  // MODULES_DESKTOP_CAPTURE_WIN_DXGI_FRAME_H_