1 files changed, 116 insertions, 0 deletions
diff --git a/gfx/layers/d3d11/GpuProcessD3D11TextureMap.h b/gfx/layers/d3d11/GpuProcessD3D11TextureMap.h
new file mode 100644
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+++ b/gfx/layers/d3d11/GpuProcessD3D11TextureMap.h
@@ -0,0 +1,116 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 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 MOZILLA_GFX_GpuProcessD3D11TextureMap_H
+#define MOZILLA_GFX_GpuProcessD3D11TextureMap_H
+
+#include <d3d11.h>
+#include <unordered_map>
+#include <unordered_set>
+
+#include "mozilla/gfx/2D.h"
+#include "mozilla/layers/LayersTypes.h"
+#include "mozilla/layers/TextureHost.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/StaticPtr.h"
+
+namespace mozilla {
+namespace layers {
+
+class IMFSampleUsageInfo;
+class TextureWrapperD3D11Allocator;
+
+/**
+ * A class to manage ID3D11Texture2Ds that is shared without using shared handle
+ * in GPU process. On some GPUs, ID3D11Texture2Ds of hardware decoded video
+ * frames with zero video frame copy could not use shared handle.
+ */
+class GpuProcessD3D11TextureMap {
+  struct UpdatingTextureHolder;
+
+ public:
+  static void Init();
+  static void Shutdown();
+  static GpuProcessD3D11TextureMap* Get() { return sInstance; }
+  static GpuProcessTextureId GetNextTextureId();
+
+  GpuProcessD3D11TextureMap();
+  ~GpuProcessD3D11TextureMap();
+
+  void Register(GpuProcessTextureId aTextureId, ID3D11Texture2D* aTexture,
+                uint32_t aArrayIndex, const gfx::IntSize& aSize,
+                RefPtr<IMFSampleUsageInfo> aUsageInfo);
+  void Register(const MonitorAutoLock& aProofOfLock,
+                GpuProcessTextureId aTextureId, ID3D11Texture2D* aTexture,
+                uint32_t aArrayIndex, const gfx::IntSize& aSize,
+                RefPtr<IMFSampleUsageInfo> aUsageInfo);
+  void Unregister(GpuProcessTextureId aTextureId);
+
+  RefPtr<ID3D11Texture2D> GetTexture(GpuProcessTextureId aTextureId);
+  Maybe<HANDLE> GetSharedHandleOfCopiedTexture(GpuProcessTextureId aTextureId);
+
+  size_t GetWaitingTextureCount() const;
+
+  bool WaitTextureReady(const GpuProcessTextureId aTextureId);
+
+  void PostUpdateTextureDataTask(const GpuProcessTextureId aTextureId,
+                                 TextureHost* aTextureHost,
+                                 TextureHost* aWrappedTextureHost,
+                                 TextureWrapperD3D11Allocator* aAllocator);
+
+  void HandleInTextureUpdateThread();
+
+ private:
+  struct TextureHolder {
+    TextureHolder(ID3D11Texture2D* aTexture, uint32_t aArrayIndex,
+                  const gfx::IntSize& aSize,
+                  RefPtr<IMFSampleUsageInfo> aUsageInfo);
+    TextureHolder() = default;
+
+    RefPtr<ID3D11Texture2D> mTexture;
+    uint32_t mArrayIndex = 0;
+    gfx::IntSize mSize;
+    RefPtr<IMFSampleUsageInfo> mIMFSampleUsageInfo;
+    RefPtr<ID3D11Texture2D> mCopiedTexture;
+    RefPtr<gfx::FileHandleWrapper> mCopiedTextureSharedHandle;
+  };
+
+  struct UpdatingTextureHolder {
+    UpdatingTextureHolder(const GpuProcessTextureId aTextureId,
+                          TextureHost* aTextureHost,
+                          TextureHost* aWrappedTextureHost,
+                          TextureWrapperD3D11Allocator* aAllocator);
+
+    ~UpdatingTextureHolder();
+
+    const GpuProcessTextureId mTextureId;
+    RefPtr<TextureHost> mTextureHost;
+    CompositableTextureHostRef mWrappedTextureHost;
+    RefPtr<TextureWrapperD3D11Allocator> mAllocator;
+  };
+
+  enum class UpdatingStatus { Waiting, Updating, Error };
+
+  RefPtr<ID3D11Texture2D> UpdateTextureData(UpdatingTextureHolder* aHolder);
+
+  mutable Monitor mMonitor MOZ_UNANNOTATED;
+
+  std::unordered_map<GpuProcessTextureId, TextureHolder,
+                     GpuProcessTextureId::HashFn>
+      mD3D11TexturesById;
+
+  std::deque<UniquePtr<UpdatingTextureHolder>> mWaitingTextureQueue;
+
+  std::unordered_set<GpuProcessTextureId, GpuProcessTextureId::HashFn>
+      mWaitingTextures;
+
+  static StaticAutoPtr<GpuProcessD3D11TextureMap> sInstance;
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif /* MOZILLA_GFX_GpuProcessD3D11TextureMap_H */