MediaCapabilities.h

Enable keyboard shortcuts

/* -*- 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_ */