/* -*- 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 "PlatformDecoderModule.h"

#include "mozilla/StaticMutex.h"

class CDMProxy;

namespace mozilla {

class DecoderDoctorDiagnostics;

class PDMFactoryImpl;

template <class T>

class StaticAutoPtr;

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. Caller is responsible for deleting this

  // instance. It's expected that there will be multiple

  // PlatformDecoderModules alive at the same time.

  // This is called on the decode task queue.

  already_AddRefed<MediaDataDecoder> CreateDecoder(

      const CreateDecoderParams& aParams);

  bool SupportsMimeType(const nsACString& aMimeType,

                        DecoderDoctorDiagnostics* aDiagnostics) const;

  bool Supports(const TrackInfo& aTrackInfo,

                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 void EnsureInit();

  static constexpr int kYUV400 = 0;

  static constexpr int kYUV420 = 1;

  static constexpr int kYUV422 = 2;

  static constexpr int kYUV444 = 3;

 private:

  virtual ~PDMFactory();

  void CreatePDMs();

  void CreateNullPDM();

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

  bool StartupPDM(PlatformDecoderModule* aPDM, bool aInsertAtBeginning = false);

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

  already_AddRefed<PlatformDecoderModule> GetDecoder(

      const TrackInfo& aTrackInfo,

      DecoderDoctorDiagnostics* aDiagnostics) const;

  already_AddRefed<MediaDataDecoder> CreateDecoderWithPDM(

      PlatformDecoderModule* aPDM, const CreateDecoderParams& aParams);

  nsTArray<RefPtr<PlatformDecoderModule>> mCurrentPDMs;

  RefPtr<PlatformDecoderModule> mEMEPDM;

  RefPtr<PlatformDecoderModule> mNullPDM;

  bool mWMFFailedToLoad = false;

  bool mFFmpegFailedToLoad = false;

  bool mGMPPDMFailedToStartup = false;

  template <class T>

  friend class StaticAutoPtr;

  static StaticAutoPtr<PDMFactoryImpl> sInstance;

  static StaticMutex sMonitor;

};

}  // namespace mozilla

#endif /* PDMFactory_h_ */