content/browser/renderer_host/media/desktop_capture_device.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_DESKTOP_CAPTURE_DEVICE_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_DESKTOP_CAPTURE_DEVICE_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "content/common/content_export.h"
  11 #include "media/video/capture/video_capture_device.h"
  12
  13 namespace base {
  14 class SequencedTaskRunner;
  15 }  // namespace base
  16
  17 namespace webrtc {
  18 class DesktopCapturer;
  19 }  // namespace webrtc
  20
  21 namespace content {
  22
  23 struct DesktopMediaID;
  24
  25 // DesktopCaptureDevice implements VideoCaptureDevice for screens and windows.
  26 // It's essentially an adapter between webrtc::DesktopCapturer and
  27 // VideoCaptureDevice.
  28 class CONTENT_EXPORT DesktopCaptureDevice : public media::VideoCaptureDevice {
  29  public:
  30   // Creates capturer for the specified |source| and then creates
  31   // DesktopCaptureDevice for it. May return NULL in case of a failure (e.g. if
  32   // requested window was destroyed).
  33   static scoped_ptr<media::VideoCaptureDevice> Create(
  34       const DesktopMediaID& source);
  35
  36   DesktopCaptureDevice(scoped_refptr<base::SequencedTaskRunner> task_runner,
  37                        scoped_ptr<webrtc::DesktopCapturer> desktop_capturer);
  38   virtual ~DesktopCaptureDevice();
  39
  40   // VideoCaptureDevice interface.
  41   virtual void AllocateAndStart(const media::VideoCaptureParams& params,
  42                                 scoped_ptr<Client> client) OVERRIDE;
  43   virtual void StopAndDeAllocate() OVERRIDE;
  44
  45  private:
  46   class Core;
  47   scoped_refptr<Core> core_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(DesktopCaptureDevice);
  50 };
  51
  52 }  // namespace content
  53
  54 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_DESKTOP_CAPTURE_DEVICE_H_