ipc/glue/UtilityAudioDecoderChild.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=2 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6 #ifndef _include_ipc_glue_UtilityAudioDecoderChild_h__
   7 #define _include_ipc_glue_UtilityAudioDecoderChild_h__
   8
   9 #include "mozilla/ProcInfo.h"
  10 #include "mozilla/ProfilerMarkers.h"
  11 #include "mozilla/RefPtr.h"
  12
  13 #include "mozilla/ipc/Endpoint.h"
  14 #include "mozilla/ipc/UtilityProcessParent.h"
  15 #include "mozilla/ipc/UtilityProcessSandboxing.h"
  16 #include "mozilla/ipc/UtilityAudioDecoder.h"
  17 #include "mozilla/ipc/PUtilityAudioDecoderChild.h"
  18
  19 #ifdef MOZ_WMF_MEDIA_ENGINE
  20 #  include "mozilla/gfx/GPUProcessListener.h"
  21 #  include "mozilla/gfx/gfxVarReceiver.h"
  22 #endif
  23
  24 #include "PDMFactory.h"
  25
  26 namespace mozilla::ipc {
  27
  28 class UtilityAudioDecoderChildShutdownObserver : public nsIObserver {
  29  public:
  30   explicit UtilityAudioDecoderChildShutdownObserver(SandboxingKind aKind)
  31       : mSandbox(aKind) {};
  32
  33   NS_DECL_ISUPPORTS
  34
  35   NS_IMETHOD Observe(nsISupports* aSubject, const char* aTopic,
  36                      const char16_t* aData) override;
  37
  38  private:
  39   virtual ~UtilityAudioDecoderChildShutdownObserver() = default;
  40
  41   const SandboxingKind mSandbox;
  42 };
  43
  44 // This controls performing audio decoding on the utility process and it is
  45 // intended to live on the main process side
  46 class UtilityAudioDecoderChild final : public PUtilityAudioDecoderChild
  47 #ifdef MOZ_WMF_MEDIA_ENGINE
  48     ,
  49                                        public gfx::gfxVarReceiver,
  50                                        public gfx::GPUProcessListener
  51 #endif
  52 {
  53  public:
  54   NS_INLINE_DECL_THREADSAFE_REFCOUNTING(UtilityAudioDecoderChild, override);
  55   mozilla::ipc::IPCResult RecvUpdateMediaCodecsSupported(
  56       const RemoteDecodeIn& aLocation,
  57       const media::MediaCodecsSupported& aSupported);
  58
  59   UtilityActorName GetActorName() { return GetAudioActorName(mSandbox); }
  60
  61   nsresult BindToUtilityProcess(RefPtr<UtilityProcessParent> aUtilityParent);
  62
  63   void ActorDestroy(ActorDestroyReason aReason) override;
  64
  65   void Bind(Endpoint<PUtilityAudioDecoderChild>&& aEndpoint);
  66
  67   static void Shutdown(SandboxingKind aKind);
  68
  69   static RefPtr<UtilityAudioDecoderChild> GetSingleton(SandboxingKind aKind);
  70
  71 #ifdef MOZ_WMF_MEDIA_ENGINE
  72   mozilla::ipc::IPCResult RecvCompleteCreatedVideoBridge();
  73
  74   void OnVarChanged(const gfx::GfxVarUpdate& aVar) override;
  75
  76   void OnCompositorUnexpectedShutdown() override;
  77
  78   // True if creating a video bridge sucessfully. Currently only used for media
  79   // engine cdm.
  80   bool CreateVideoBridge();
  81 #endif
  82
  83 #ifdef MOZ_WMF_CDM
  84   void GetKeySystemCapabilities(dom::Promise* aPromise);
  85 #endif
  86
  87  private:
  88   explicit UtilityAudioDecoderChild(SandboxingKind aKind);
  89   ~UtilityAudioDecoderChild() = default;
  90
  91   const SandboxingKind mSandbox;
  92
  93 #ifdef MOZ_WMF_MEDIA_ENGINE
  94   // True if the utility process has created a video bridge with the GPU prcess.
  95   // Currently only used for media egine cdm. Main thread only.
  96   enum class State { None, Creating, Created };
  97   State mHasCreatedVideoBridge = State::None;
  98 #endif
  99
 100   TimeStamp mAudioDecoderChildStart;
 101 };
 102
 103 }  // namespace mozilla::ipc
 104
 105 #endif  // _include_ipc_glue_UtilityAudioDecoderChild_h__