UtilityAudioDecoderChild.h

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

/* vim: set ts=2 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 _include_ipc_glue_UtilityAudioDecoderChild_h__

#define _include_ipc_glue_UtilityAudioDecoderChild_h__

#include "mozilla/ProcInfo.h"

#include "mozilla/ProfilerMarkers.h"

#include "mozilla/RefPtr.h"

#include "mozilla/ipc/Endpoint.h"

#include "mozilla/ipc/UtilityProcessParent.h"

#include "mozilla/ipc/UtilityProcessSandboxing.h"

#include "mozilla/ipc/UtilityAudioDecoder.h"

#include "mozilla/ipc/PUtilityAudioDecoderChild.h"

#ifdef MOZ_WMF_MEDIA_ENGINE

#  include "mozilla/gfx/GPUProcessListener.h"

#  include "mozilla/gfx/gfxVarReceiver.h"

#endif

#include "PDMFactory.h"

namespace mozilla::ipc {

class UtilityAudioDecoderChildShutdownObserver : public nsIObserver {

 public:

  explicit UtilityAudioDecoderChildShutdownObserver(SandboxingKind aKind)

      : mSandbox(aKind) {};

  NS_DECL_ISUPPORTS

  NS_IMETHOD Observe(nsISupports* aSubject, const char* aTopic,

                     const char16_t* aData) override;

 private:

  virtual ~UtilityAudioDecoderChildShutdownObserver() = default;

  const SandboxingKind mSandbox;

};

// This controls performing audio decoding on the utility process and it is

// intended to live on the main process side

class UtilityAudioDecoderChild final : public PUtilityAudioDecoderChild

#ifdef MOZ_WMF_MEDIA_ENGINE

                                       public gfx::gfxVarReceiver,

                                       public gfx::GPUProcessListener

#endif

 public:

  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(UtilityAudioDecoderChild, override);

  mozilla::ipc::IPCResult RecvUpdateMediaCodecsSupported(

      const RemoteDecodeIn& aLocation,

      const media::MediaCodecsSupported& aSupported);

  UtilityActorName GetActorName() { return GetAudioActorName(mSandbox); }

  nsresult BindToUtilityProcess(RefPtr<UtilityProcessParent> aUtilityParent);

  void ActorDestroy(ActorDestroyReason aReason) override;

  void Bind(Endpoint<PUtilityAudioDecoderChild>&& aEndpoint);

  static void Shutdown(SandboxingKind aKind);

  static RefPtr<UtilityAudioDecoderChild> GetSingleton(SandboxingKind aKind);

#ifdef MOZ_WMF_MEDIA_ENGINE

  mozilla::ipc::IPCResult RecvCompleteCreatedVideoBridge();

  void OnVarChanged(const gfx::GfxVarUpdate& aVar) override;

  void OnCompositorUnexpectedShutdown() override;

  // True if creating a video bridge sucessfully. Currently only used for media

  // engine cdm.

  bool CreateVideoBridge();

#endif

#ifdef MOZ_WMF_CDM

  void GetKeySystemCapabilities(dom::Promise* aPromise);

#endif

 private:

  explicit UtilityAudioDecoderChild(SandboxingKind aKind);

  ~UtilityAudioDecoderChild() = default;

  const SandboxingKind mSandbox;

#ifdef MOZ_WMF_MEDIA_ENGINE

  // True if the utility process has created a video bridge with the GPU prcess.

  // Currently only used for media egine cdm. Main thread only.

  enum class State { None, Creating, Created };

  State mHasCreatedVideoBridge = State::None;

#endif

  TimeStamp mAudioDecoderChildStart;

};

}  // namespace mozilla::ipc

#endif  // _include_ipc_glue_UtilityAudioDecoderChild_h__