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diff --git a/dom/media/platforms/wmf/MFMediaEngineVideoStream.h b/dom/media/platforms/wmf/MFMediaEngineVideoStream.h
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+/* 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 DOM_MEDIA_PLATFORM_WMF_MFMEDIAENGINEVIDEOSTREAM_H
+#define DOM_MEDIA_PLATFORM_WMF_MFMEDIAENGINEVIDEOSTREAM_H
+
+#include "MFMediaEngineStream.h"
+#include "WMFUtils.h"
+#include "mozilla/Atomics.h"
+#include "mozilla/Mutex.h"
+
+namespace mozilla {
+namespace layers {
+
+class Image;
+class DcompSurfaceImage;
+
+} // namespace layers
+
+class MFMediaSource;
+
+class MFMediaEngineVideoStream final : public MFMediaEngineStream {
+ public:
+ MFMediaEngineVideoStream() = default;
+
+ static MFMediaEngineVideoStream* Create(uint64_t aStreamId,
+ const TrackInfo& aInfo,
+ MFMediaSource* aParentSource);
+ nsCString GetDescriptionName() const override {
+ return "media engine video stream"_ns;
+ }
+
+ TrackInfo::TrackType TrackType() override {
+ return TrackInfo::TrackType::kVideoTrack;
+ }
+
+ void SetKnowsCompositor(layers::KnowsCompositor* aKnowsCompositor);
+
+ void SetDCompSurfaceHandle(HANDLE aDCompSurfaceHandle);
+
+ MFMediaEngineVideoStream* AsVideoStream() override { return this; }
+
+ MediaDataDecoder::ConversionRequired NeedsConversion() const override;
+
+ // Called by MFMediaEngineParent when we are creating a video decoder for
+ // the remote decoder. This is used to detect if the inband video config
+ // change happens during playback.
+ void SetConfig(const TrackInfo& aConfig);
+
+ RefPtr<MediaDataDecoder::DecodePromise> Drain() override;
+
+ private:
+ HRESULT
+ CreateMediaType(const TrackInfo& aInfo, IMFMediaType** aMediaType) override;
+
+ bool HasEnoughRawData() const override;
+
+ void UpdateConfig(const VideoInfo& aInfo);
+
+ already_AddRefed<MediaData> OutputDataInternal() override;
+
+ bool IsDCompImageReady();
+
+ void ResolvePendingDrainPromiseIfNeeded();
+
+ void ShutdownCleanUpOnTaskQueue() override;
+
+ bool IsEnded() const override;
+
+ // Task queue only members.
+ HANDLE mDCompSurfaceHandle;
+ bool mNeedRecreateImage;
+ RefPtr<layers::KnowsCompositor> mKnowsCompositor;
+
+ Mutex mMutex{"MFMediaEngineVideoStream"};
+ gfx::IntSize mDisplay MOZ_GUARDED_BY(mMutex);
+
+ // Set on the initialization, won't be changed after that.
+ WMFStreamType mStreamType;
+
+ // Created and accessed in the decoder thread.
+ RefPtr<layers::DcompSurfaceImage> mDcompSurfaceImage;
+
+ // This flag is used to check if the video config changes detected by the
+ // media config monitor. When the video decoder get created first, we will set
+ // this flag to true, then we know any config being set afterward indicating
+ // a new config change.
+ bool mHasReceivedInitialCreateDecoderConfig;
+
+ // When draining, the track should return all decoded data. However, if the
+ // dcomp image hasn't been ready yet, then we won't have any decoded data to
+ // return. This promise is used for that case, and will be resolved once we
+ // have dcomp image.
+ MozPromiseHolder<MediaDataDecoder::DecodePromise> mPendingDrainPromise;
+};
+
+} // namespace mozilla
+
+#endif // DOM_MEDIA_PLATFORM_WMF_MFMEDIAENGINEVIDEOSTREAM_H