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Create a media engine that would be responsible to play media. We would perform any commands sent from the content process on the media engine, and also notify the content process when the media engine updates its status, notifying some useful events, or encountering any error. Differential Revision: https://phabricator.services.mozilla.com/D144634
106 lines
3.7 KiB
C++
106 lines
3.7 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef DOM_MEDIA_IPC_MFMEDIAENGINEPARENT_H_
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#define DOM_MEDIA_IPC_MFMEDIAENGINEPARENT_H_
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#include <wrl.h>
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#include "MediaInfo.h"
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#include "MFMediaEngineExtra.h"
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#include "MFMediaEngineNotify.h"
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#include "MFMediaEngineUtils.h"
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#include "MFMediaSource.h"
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#include "PlatformDecoderModule.h"
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#include "mozilla/PMFMediaEngineParent.h"
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namespace mozilla {
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class MFMediaEngineExtension;
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class MFMediaEngineStreamWrapper;
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class MFMediaSource;
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class RemoteDecoderManagerParent;
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/**
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* MFMediaEngineParent is a wrapper class for a MediaEngine in the RDD process.
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* It's responsible to create the media engine and its related classes, such as
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* a custom media source, media engine extension, media engine notify...e.t.c
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* It communicates with MFMediaEngineChild in the content process to receive
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* commands and direct them to the media engine.
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* https://docs.microsoft.com/en-us/windows/win32/api/mfmediaengine/nn-mfmediaengine-imfmediaengine
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*/
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class MFMediaEngineParent final : public PMFMediaEngineParent {
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public:
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MFMediaEngineParent);
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MFMediaEngineParent(RemoteDecoderManagerParent* aManager,
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nsISerialEventTarget* aManagerThread);
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using TrackType = TrackInfo::TrackType;
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static MFMediaEngineParent* GetMediaEngineById(uint64_t aId);
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MFMediaEngineStreamWrapper* GetMediaEngineStream(
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TrackType aType, const CreateDecoderParams& aParam);
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uint64_t Id() const { return mMediaEngineId; }
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// Methods for PMFMediaEngineParent
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mozilla::ipc::IPCResult RecvInitMediaEngine(
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const MediaEngineInfoIPDL& aInfo, InitMediaEngineResolver&& aResolver);
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mozilla::ipc::IPCResult RecvNotifyMediaInfo(const MediaInfoIPDL& aInfo);
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mozilla::ipc::IPCResult RecvPlay();
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mozilla::ipc::IPCResult RecvPause();
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mozilla::ipc::IPCResult RecvSeek(double aTargetTimeInSecond);
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mozilla::ipc::IPCResult RecvSetVolume(double aVolume);
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mozilla::ipc::IPCResult RecvSetPlaybackRate(double aPlaybackRate);
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mozilla::ipc::IPCResult RecvSetLooping(bool aLooping);
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mozilla::ipc::IPCResult RecvNotifyEndOfStream(TrackInfo::TrackType aType);
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mozilla::ipc::IPCResult RecvShutdown();
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void Destroy();
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private:
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~MFMediaEngineParent();
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void CreateMediaEngine();
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void AssertOnManagerThread() const;
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void HandleMediaEngineEvent(MFMediaEngineEventWrapper aEvent);
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void HandleRequestSample(const SampleRequest& aRequest);
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void NotifyError(MF_MEDIA_ENGINE_ERR aError, HRESULT aResult = 0);
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void DestroyEngineIfExists(const Maybe<MediaResult>& aError = Nothing());
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// This generates unique id for each MFMediaEngineParent instance, and it
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// would be increased monotonically.
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static inline uint64_t sMediaEngineIdx = 0;
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const uint64_t mMediaEngineId;
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// The life cycle of this class is determined by the actor in the content
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// process, we would hold a reference until the content actor asks us to
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// destroy.
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RefPtr<MFMediaEngineParent> mIPDLSelfRef;
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const RefPtr<RemoteDecoderManagerParent> mManager;
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const RefPtr<nsISerialEventTarget> mManagerThread;
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// Required classes for working with the media engine.
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Microsoft::WRL::ComPtr<IMFMediaEngine> mMediaEngine;
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Microsoft::WRL::ComPtr<MFMediaEngineNotify> mMediaEngineNotify;
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Microsoft::WRL::ComPtr<MFMediaEngineExtension> mMediaEngineExtension;
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Microsoft::WRL::ComPtr<MFMediaSource> mMediaSource;
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MediaEventListener mMediaEngineEventListener;
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MediaEventListener mRequestSampleListener;
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MediaEventListener mTimeUpdateListener;
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bool mIsCreatedMediaEngine = false;
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};
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} // namespace mozilla
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#endif // DOM_MEDIA_IPC_MFMEDIAENGINEPARENT_H_
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