PDMFactory.h - mozsearch

Enable keyboard shortcuts

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim:set ts=2 sw=2 sts=2 et cindent: */

/* 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/. */

#if !defined(PDMFactory_h_)

#  define PDMFactory_h_

#  include "DecoderDoctorDiagnostics.h"

#  include "MediaCodecsSupport.h"

#  include "PlatformDecoderModule.h"

#  include "mozilla/AlreadyAddRefed.h"

#  include "mozilla/EnumSet.h"

#  include "mozilla/MozPromise.h"

#  include "mozilla/RefPtr.h"

#  include "mozilla/ipc/UtilityProcessSandboxing.h"

#  include "nsISupports.h"

#  include "nsStringFwd.h"

#  include "nsTArray.h"

#  include <utility>

namespace mozilla {

class CDMProxy;

class MediaDataDecoder;

class MediaResult;

class StaticMutex;

struct CreateDecoderParams;

struct CreateDecoderParamsForAsync;

struct SupportDecoderParams;

enum class RemoteDecodeIn;

using PDMCreateDecoderPromise = PlatformDecoderModule::CreateDecoderPromise;

class PDMFactory final {

 public:

  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(PDMFactory)

  PDMFactory();

  // Factory method that creates the appropriate PlatformDecoderModule for

  // the platform we're running on.

  RefPtr<PDMCreateDecoderPromise> CreateDecoder(

      const CreateDecoderParams& aParams);

  media::DecodeSupportSet SupportsMimeType(const nsACString& aMimeType) const;

  media::DecodeSupportSet Supports(

      const SupportDecoderParams& aParams,

      DecoderDoctorDiagnostics* aDiagnostics) const;

  // Creates a PlatformDecoderModule that uses a CDMProxy to decrypt or

  // decrypt-and-decode EME encrypted content. If the CDM only decrypts and

  // does not decode, we create a PDM and use that to create MediaDataDecoders

  // that we use on on aTaskQueue to decode the decrypted stream.

  // This is called on the decode task queue.

  void SetCDMProxy(CDMProxy* aProxy);

  static constexpr int kYUV400 = 0;

  static constexpr int kYUV420 = 1;

  static constexpr int kYUV422 = 2;

  static constexpr int kYUV444 = 3;

  static media::MediaCodecsSupported Supported(bool aForceRefresh = false);

  static media::DecodeSupportSet SupportsMimeType(

      const nsACString& aMimeType,

      const media::MediaCodecsSupported& aSupported, RemoteDecodeIn aLocation);

  static bool AllDecodersAreRemote();

 private:

  virtual ~PDMFactory();

  void CreatePDMs();

  void CreateNullPDM();

  void CreateGpuPDMs();

  void CreateRddPDMs();

  void CreateUtilityPDMs();

  void CreateContentPDMs();

  void CreateDefaultPDMs();

  // Startup the provided PDM and add it to our list if successful.

  bool StartupPDM(already_AddRefed<PlatformDecoderModule> aPDM,

                  bool aInsertAtBeginning = false);

  // Returns the first PDM in our list supporting the mimetype.

  already_AddRefed<PlatformDecoderModule> GetDecoderModule(

      const SupportDecoderParams& aParams,

      DecoderDoctorDiagnostics* aDiagnostics) const;

  RefPtr<PDMCreateDecoderPromise> CreateDecoderWithPDM(

      PlatformDecoderModule* aPDM, const CreateDecoderParams& aParams);

  RefPtr<PDMCreateDecoderPromise> CheckAndMaybeCreateDecoder(

      CreateDecoderParamsForAsync&& aParams, uint32_t aIndex,

      Maybe<MediaResult> aEarlierError = Nothing());

  nsTArray<RefPtr<PlatformDecoderModule>> mCurrentPDMs;

  RefPtr<PlatformDecoderModule> mEMEPDM;

  RefPtr<PlatformDecoderModule> mNullPDM;

  DecoderDoctorDiagnostics::FlagsSet mFailureFlags;

  friend class RemoteVideoDecoderParent;

  static void EnsureInit();

};

}  // namespace mozilla

#endif /* PDMFactory_h_ */