frame_sink_video_capture_device.h | Explore in Territory

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_MEDIA_CAPTURE_FRAME_SINK_VIDEO_CAPTURE_DEVICE_H_
#define CONTENT_BROWSER_MEDIA_CAPTURE_FRAME_SINK_VIDEO_CAPTURE_DEVICE_H_

#include <memory>
#include <optional>
#include <string>
#include <utility>
#include <vector>

#include "base/check.h"
#include "base/functional/callback_forward.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "build/build_config.h"
#include "components/viz/common/gpu/context_lost_observer.h"
#include "components/viz/common/surfaces/frame_sink_id.h"
#include "components/viz/common/surfaces/video_capture_target.h"
#include "components/viz/host/client_frame_sink_video_capturer.h"
#include "content/common/content_export.h"
#include "content/public/browser/browser_thread.h"
#include "media/base/video_frame.h"
#include "media/base/video_types.h"
#include "media/capture/mojom/video_capture_types.mojom.h"
#include "media/capture/video/video_capture_device.h"
#include "media/capture/video/video_frame_receiver.h"
#include "media/capture/video_capture_types.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/device/public/mojom/wake_lock.mojom.h"
#include "services/viz/public/cpp/compositing/video_capture_target_mojom_traits.h"
#include "ui/compositor/compositor.h"

namespace content {

class MouseCursorOverlayController;

class ContextProviderObserver;

// A virtualized VideoCaptureDevice that captures the displayed contents of a
// frame sink (see viz::CompositorFrameSink), such as the composited main view
// of a WebContents instance, producing a stream of video frames.
//
// From the point-of-view of the VIZ service, this is a consumer of video frames
// (viz::mojom::FrameSinkVideoConsumer). However, from the point-of-view of the
// video capture stack, this is a device (media::VideoCaptureDevice) that
// produces video frames. Therefore, a FrameSinkVideoCaptureDevice is really a
// proxy between the two subsystems.
//
// Usually, a subclass implementation is instantiated and used, such as
// WebContentsVideoCaptureDevice or AuraWindowCaptureDevice. These subclasses
// provide additional implementation, to update which frame sink is targeted for
// capture, and to notify other components that capture is taking place.
class CONTENT_EXPORT FrameSinkVideoCaptureDevice
    : public media::VideoCaptureDevice,
      public viz::mojom::FrameSinkVideoConsumer { … };

}  // namespace content

#endif  // CONTENT_BROWSER_MEDIA_CAPTURE_FRAME_SINK_VIDEO_CAPTURE_DEVICE_H_
chromium/content/browser/media/capture/frame_sink_video_capture_device.h
