content/browser/media/capture/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_MEDIA_CAPTURE_DESKTOP_CAPTURE_DEVICE_H_
   6 #define CONTENT_BROWSER_MEDIA_CAPTURE_DESKTOP_CAPTURE_DEVICE_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/threading/thread.h"
  11 #include "content/common/content_export.h"
  12 #include "content/public/browser/desktop_media_id.h"
  13 #include "media/video/capture/video_capture_device.h"
  14 #include "ui/gfx/native_widget_types.h"
  15
  16 namespace base {
  17 class SingleThreadTaskRunner;
  18 class Thread;
  19 }  // namespace base
  20
  21 namespace webrtc {
  22 class DesktopCapturer;
  23 }  // namespace webrtc
  24
  25 namespace content {
  26
  27 // DesktopCaptureDevice implements VideoCaptureDevice for screens and windows.
  28 // It's essentially an adapter between webrtc::DesktopCapturer and
  29 // VideoCaptureDevice.
  30 class CONTENT_EXPORT DesktopCaptureDevice : public media::VideoCaptureDevice {
  31  public:
  32   // Creates capturer for the specified |source| and then creates
  33   // DesktopCaptureDevice for it. May return NULL in case of a failure (e.g. if
  34   // requested window was destroyed).
  35   static scoped_ptr<media::VideoCaptureDevice> Create(
  36       const DesktopMediaID& source);
  37
  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   // Set the platform-dependent window id for the notification window.
  46   void SetNotificationWindowId(gfx::NativeViewId window_id);
  47
  48  private:
  49   friend class DesktopCaptureDeviceTest;
  50   class Core;
  51
  52   DesktopCaptureDevice(scoped_ptr<webrtc::DesktopCapturer> desktop_capturer,
  53                        DesktopMediaID::Type type);
  54
  55   base::Thread thread_;
  56   scoped_ptr<Core> core_;
  57
  58   DISALLOW_COPY_AND_ASSIGN(DesktopCaptureDevice);
  59 };
  60
  61 }  // namespace content
  62
  63 #endif  // CONTENT_BROWSER_MEDIA_CAPTURE_DESKTOP_CAPTURE_DEVICE_H_