1 files changed, 104 insertions, 0 deletions
diff --git a/dom/media/mediacapabilities/MediaCapabilities.h b/dom/media/mediacapabilities/MediaCapabilities.h
new file mode 100644
index 0000000000..b31e12e8ab
--- /dev/null
+++ b/dom/media/mediacapabilities/MediaCapabilities.h
@@ -0,0 +1,104 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_MediaCapabilities_h_
+#define mozilla_dom_MediaCapabilities_h_
+
+#include "DDLoggedTypeTraits.h"
+#include "js/TypeDecls.h"
+#include "mozilla/AlreadyAddRefed.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/dom/NonRefcountedDOMObject.h"
+#include "nsCOMPtr.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsISupports.h"
+#include "nsStringFwd.h"
+#include "nsWrapperCache.h"
+
+class nsIGlobalObject;
+
+namespace mozilla {
+class ErrorResult;
+class MediaContainerType;
+
+namespace layers {
+class KnowsCompositor;
+}
+namespace dom {
+class MediaCapabilities;
+}  // namespace dom
+DDLoggedTypeName(dom::MediaCapabilities);
+
+namespace dom {
+
+struct MediaDecodingConfiguration;
+struct MediaEncodingConfiguration;
+struct AudioConfiguration;
+struct VideoConfiguration;
+class Promise;
+
+class MediaCapabilities final : public nsISupports, public nsWrapperCache {
+ public:
+  // Ref counting and cycle collection
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(MediaCapabilities)
+
+  // WebIDL Methods
+  already_AddRefed<Promise> DecodingInfo(
+      const MediaDecodingConfiguration& aConfiguration, ErrorResult& aRv);
+  already_AddRefed<Promise> EncodingInfo(
+      const MediaEncodingConfiguration& aConfiguration, ErrorResult& aRv);
+  // End WebIDL Methods
+
+  explicit MediaCapabilities(nsIGlobalObject* aParent);
+
+  nsIGlobalObject* GetParentObject() const { return mParent; }
+  JSObject* WrapObject(JSContext* aCx,
+                       JS::Handle<JSObject*> aGivenProto) override;
+
+  static bool Enabled(JSContext* aCx, JSObject* aGlobal);
+
+ private:
+  virtual ~MediaCapabilities() = default;
+  Maybe<MediaContainerType> CheckVideoConfiguration(
+      const VideoConfiguration& aConfig) const;
+  Maybe<MediaContainerType> CheckAudioConfiguration(
+      const AudioConfiguration& aConfig) const;
+  bool CheckTypeForMediaSource(const nsAString& aType);
+  bool CheckTypeForFile(const nsAString& aType);
+  bool CheckTypeForEncoder(const nsAString& aType);
+  already_AddRefed<layers::KnowsCompositor> GetCompositor();
+  nsCOMPtr<nsIGlobalObject> mParent;
+};
+
+class MediaCapabilitiesInfo final : public NonRefcountedDOMObject {
+ public:
+  // WebIDL methods
+  bool Supported() const { return mSupported; }
+  bool Smooth() const { return mSmooth; }
+  bool PowerEfficient() const { return mPowerEfficient; }
+  // End WebIDL methods
+
+  MediaCapabilitiesInfo(bool aSupported, bool aSmooth, bool aPowerEfficient)
+      : mSupported(aSupported),
+        mSmooth(aSmooth),
+        mPowerEfficient(aPowerEfficient) {}
+
+  bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto,
+                  JS::MutableHandle<JSObject*> aReflector);
+
+ private:
+  bool mSupported;
+  bool mSmooth;
+  bool mPowerEfficient;
+};
+
+}  // namespace dom
+
+}  // namespace mozilla
+
+#endif /* mozilla_dom_MediaCapabilities_h_ */