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

/* 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 GMPService_h_

#define GMPService_h_

#include "nsString.h"

#include "mozIGeckoMediaPluginService.h"

#include "nsIObserver.h"

#include "nsTArray.h"

#include "mozilla/Atomics.h"

#include "mozilla/Attributes.h"

#include "mozilla/Monitor.h"

#include "nsString.h"

#include "nsCOMPtr.h"

#include "nsIThread.h"

#include "nsThreadUtils.h"

#include "nsIDocument.h"

#include "nsIWeakReference.h"

#include "mozilla/AbstractThread.h"

#include "nsClassHashtable.h"

#include "nsISupportsImpl.h"

#include "mozilla/MozPromise.h"

#include "GMPContentParent.h"

#include "GMPCrashHelper.h"

#include "ChromiumCDMParent.h"

#include "MediaResult.h"

template <class> struct already_AddRefed;

namespace mozilla {

class GMPCrashHelper;

extern LogModule* GetGMPLog();

namespace gmp {

struct NodeId

{

  NodeId(const nsAString& aOrigin,

         const nsAString& aTopLevelOrigin,

         const nsAString& aGMPName)

    : mOrigin(aOrigin)

    , mTopLevelOrigin(aTopLevelOrigin)

    , mGMPName(aGMPName)

  {

  }

  nsString mOrigin;

  nsString mTopLevelOrigin;

  nsString mGMPName;

};

typedef MozPromise<RefPtr<GMPContentParent::CloseBlocker>,

                   MediaResult,

                   /* IsExclusive = */ true>

  GetGMPContentParentPromise;

typedef MozPromise<RefPtr<ChromiumCDMParent>,

                   MediaResult,

                   /* IsExclusive = */ true>

  GetCDMParentPromise;

class GeckoMediaPluginService : public mozIGeckoMediaPluginService

                              , public nsIObserver

{

public:

  static already_AddRefed<GeckoMediaPluginService> GetGeckoMediaPluginService();

  virtual nsresult Init();

  NS_DECL_THREADSAFE_ISUPPORTS

  RefPtr<GetCDMParentPromise> GetCDM(const NodeId& aNodeId,

                                     nsTArray<nsCString> aTags,

                                     GMPCrashHelper* aHelper);

  // mozIGeckoMediaPluginService

  NS_IMETHOD GetThread(nsIThread** aThread) override;

  NS_IMETHOD GetDecryptingGMPVideoDecoder(GMPCrashHelper* aHelper,

                                          nsTArray<nsCString>* aTags,

                                          const nsACString& aNodeId,

                                          UniquePtr<GetGMPVideoDecoderCallback>&& aCallback,

                                          uint32_t aDecryptorId)

    override;

  NS_IMETHOD GetGMPVideoEncoder(GMPCrashHelper* aHelper,

                                nsTArray<nsCString>* aTags,

                                const nsACString& aNodeId,

                                UniquePtr<GetGMPVideoEncoderCallback>&& aCallback)

    override;

  // Helper for backwards compatibility with WebRTC/tests.

  NS_IMETHOD

  GetGMPVideoDecoder(GMPCrashHelper* aHelper,

                     nsTArray<nsCString>* aTags,

                     const nsACString& aNodeId,

                     UniquePtr<GetGMPVideoDecoderCallback>&& aCallback) override

  {

    return GetDecryptingGMPVideoDecoder(aHelper, aTags, aNodeId, std::move(aCallback), 0);

  }

  NS_IMETHOD RunPluginCrashCallbacks(uint32_t aPluginId,

                                     const nsACString& aPluginName) override;

  RefPtr<AbstractThread> GetAbstractGMPThread();

  void ConnectCrashHelper(uint32_t aPluginId, GMPCrashHelper* aHelper);

  void DisconnectCrashHelper(GMPCrashHelper* aHelper);

  bool XPCOMWillShutdownReceived() const { return mXPCOMWillShutdown; }

protected:

  GeckoMediaPluginService();

  virtual ~GeckoMediaPluginService();

  virtual void InitializePlugins(AbstractThread* aAbstractGMPThread) = 0;

  virtual RefPtr<GetGMPContentParentPromise> GetContentParent(

    GMPCrashHelper* aHelper,

    const nsACString& aNodeIdString,

    const nsCString& aAPI,

    const nsTArray<nsCString>& aTags) = 0;

  virtual RefPtr<GetGMPContentParentPromise> GetContentParent(

    GMPCrashHelper* aHelper,

    const NodeId& aNodeId,

    const nsCString& aAPI,

    const nsTArray<nsCString>& aTags) = 0;

  nsresult GMPDispatch(nsIRunnable* event, uint32_t flags = NS_DISPATCH_NORMAL);

  nsresult GMPDispatch(already_AddRefed<nsIRunnable> event, uint32_t flags = NS_DISPATCH_NORMAL);

  void ShutdownGMPThread();

  Mutex mMutex; // Protects mGMPThread, mAbstractGMPThread, mPluginCrashHelpers,

                // mGMPThreadShutdown and some members in derived classes.

  nsCOMPtr<nsIThread> mGMPThread;

  RefPtr<AbstractThread> mAbstractGMPThread;

  bool mGMPThreadShutdown;

  bool mShuttingDownOnGMPThread;

  Atomic<bool> mXPCOMWillShutdown;

  nsClassHashtable<nsUint32HashKey, nsTArray<RefPtr<GMPCrashHelper>>> mPluginCrashHelpers;

};

} // namespace gmp

} // namespace mozilla

#endif // GMPService_h_