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 "content/common/content_export.h"
  11 #include "content/public/browser/desktop_media_id.h"
  12 #include "media/video/capture/video_capture_device.h"
  13 #include "ui/gfx/native_widget_types.h"
  14
  15 namespace base {
  16 class SequencedTaskRunner;
  17 class Thread;
  18 }  // namespace base
  19
  20 namespace webrtc {
  21 class DesktopCapturer;
  22 }  // namespace webrtc
  23
  24 namespace content {
  25
  26 // DesktopCaptureDevice implements VideoCaptureDevice for screens and windows.
  27 // It's essentially an adapter between webrtc::DesktopCapturer and
  28 // VideoCaptureDevice.
  29 class CONTENT_EXPORT DesktopCaptureDevice : public media::VideoCaptureDevice {
  30  public:
  31   // Creates capturer for the specified |source| and then creates
  32   // DesktopCaptureDevice for it. May return NULL in case of a failure (e.g. if
  33   // requested window was destroyed).
  34   static scoped_ptr<media::VideoCaptureDevice> Create(
  35       const DesktopMediaID& source);
  36
  37   virtual ~DesktopCaptureDevice();
  38
  39   // VideoCaptureDevice interface.
  40   virtual void AllocateAndStart(const media::VideoCaptureParams& params,
  41                                 scoped_ptr<Client> client) OVERRIDE;
  42   virtual void StopAndDeAllocate() OVERRIDE;
  43
  44   // Set the platform-dependent window id for the notification window.
  45   void SetNotificationWindowId(gfx::NativeViewId window_id);
  46
  47  private:
  48   friend class DesktopCaptureDeviceTest;
  49   class Core;
  50
  51   // Either |task_runner| or |thread| should be non-NULL, but not both.
  52   DesktopCaptureDevice(scoped_refptr<base::SequencedTaskRunner> task_runner,
  53                        scoped_ptr<base::Thread> thread,
  54                        scoped_ptr<webrtc::DesktopCapturer> desktop_capturer,
  55                        DesktopMediaID::Type type);
  56
  57   scoped_refptr<Core> core_;
  58
  59   DISALLOW_COPY_AND_ASSIGN(DesktopCaptureDevice);
  60 };
  61
  62 }  // namespace content
  63
  64 #endif  // CONTENT_BROWSER_MEDIA_CAPTURE_DESKTOP_CAPTURE_DEVICE_H_