dom/media/mediacapabilities/MediaCapabilities.h
author Sylvestre Ledru <sledru@mozilla.com>
Mon, 19 Nov 2018 13:25:37 +0000
changeset 446960 0ceae9db9ec0be18daa1a279511ad305723185d4
parent 424879 6571ee61f0aa5af69bb10370b4a627554ee9228a
permissions -rw-r--r--
Bug 1204606 - Reformat of dom/media r=jya # skip-blame Differential Revision: https://phabricator.services.mozilla.com/D12251

/* -*- 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 "DecoderDoctorLogger.h"
#include "MediaContainerType.h"
#include "js/TypeDecls.h"
#include "mozilla/Maybe.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/dom/BindingUtils.h"
#include "nsCOMPtr.h"
#include "nsCycleCollectionNoteChild.h"
#include "nsCycleCollectionParticipant.h"
#include "nsIGlobalObject.h"
#include "nsISupports.h"
#include "nsWrapperCache.h"

namespace mozilla {
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_SCRIPT_HOLDER_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_ */