dom/media/MediaDevices.h

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   3  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #ifndef mozilla_dom_MediaDevices_h
   6 #define mozilla_dom_MediaDevices_h
   7
   8 #include "mozilla/ErrorResult.h"
   9 #include "nsISupportsImpl.h"
  10 #include "mozilla/DOMEventTargetHelper.h"
  11 #include "mozilla/dom/BindingUtils.h"
  12 #include "nsPIDOMWindow.h"
  13 #include "mozilla/media/DeviceChangeCallback.h"
  14
  15 namespace mozilla {
  16 namespace dom {
  17
  18 class Promise;
  19 struct MediaStreamConstraints;
  20 struct DisplayMediaStreamConstraints;
  21 struct MediaTrackSupportedConstraints;
  22
  23 #define MOZILLA_DOM_MEDIADEVICES_IMPLEMENTATION_IID  \
  24   {                                                  \
  25     0x2f784d8a, 0x7485, 0x4280, {                    \
  26       0x9a, 0x36, 0x74, 0xa4, 0xd6, 0x71, 0xa6, 0xc8 \
  27     }                                                \
  28   }
  29
  30 class MediaDevices final : public DOMEventTargetHelper,
  31                            public DeviceChangeCallback {
  32  public:
  33   explicit MediaDevices(nsPIDOMWindowInner* aWindow)
  34       : DOMEventTargetHelper(aWindow) {}
  35
  36   NS_DECL_ISUPPORTS_INHERITED
  37   NS_DECLARE_STATIC_IID_ACCESSOR(MOZILLA_DOM_MEDIADEVICES_IMPLEMENTATION_IID)
  38
  39   JSObject* WrapObject(JSContext* cx,
  40                        JS::Handle<JSObject*> aGivenProto) override;
  41
  42   // No code needed, as MediaTrackSupportedConstraints members default to true.
  43   void GetSupportedConstraints(MediaTrackSupportedConstraints& aResult){};
  44
  45   already_AddRefed<Promise> GetUserMedia(
  46       const MediaStreamConstraints& aConstraints, CallerType aCallerType,
  47       ErrorResult& aRv);
  48
  49   already_AddRefed<Promise> EnumerateDevices(CallerType aCallerType,
  50                                              ErrorResult& aRv);
  51
  52   already_AddRefed<Promise> GetDisplayMedia(
  53       const DisplayMediaStreamConstraints& aConstraints, CallerType aCallerType,
  54       ErrorResult& aRv);
  55
  56   virtual void OnDeviceChange() override;
  57
  58   mozilla::dom::EventHandlerNonNull* GetOndevicechange();
  59
  60   void SetOndevicechange(mozilla::dom::EventHandlerNonNull* aCallback);
  61
  62   void EventListenerAdded(nsAtom* aType) override;
  63   using DOMEventTargetHelper::EventListenerAdded;
  64
  65  private:
  66   class GumResolver;
  67   class EnumDevResolver;
  68   class GumRejecter;
  69
  70   virtual ~MediaDevices();
  71   nsCOMPtr<nsITimer> mFuzzTimer;
  72 };
  73
  74 NS_DEFINE_STATIC_IID_ACCESSOR(MediaDevices,
  75                               MOZILLA_DOM_MEDIADEVICES_IMPLEMENTATION_IID)
  76
  77 }  // namespace dom
  78 }  // namespace mozilla
  79
  80 #endif  // mozilla_dom_MediaDevices_h