gfx/webrender_bindings/RenderTextureHostWrapper.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 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
   7 #ifndef MOZILLA_GFX_RENDERTEXTUREHOSTWRAPPER_H
   8 #define MOZILLA_GFX_RENDERTEXTUREHOSTWRAPPER_H
   9
  10 #include "RenderTextureHostSWGL.h"
  11
  12 namespace mozilla {
  13
  14 namespace wr {
  15
  16 /**
  17  * RenderTextureHost of GPUVideoTextureHost.
  18  *
  19  * GPUVideoTextureHost wraps TextureHost. This class wraps RenderTextureHost of
  20  * the wrapped TextureHost. Lifetime of the wrapped TextureHost is usually
  21  * longer than GPUVideoTextureHost and the wrapped TextureHost is used by
  22  * multiple GPUVideoTextureHosts. This class is used to reduce recreations of
  23  * the wrappded RenderTextureHost. Initializations of some
  24  * RenderTextureHosts(RenderDXGITextureHost and
  25  * RenderDXGIYCbCrTextureHost) have overhead.
  26  */
  27 class RenderTextureHostWrapper final : public RenderTextureHostSWGL {
  28  public:
  29   explicit RenderTextureHostWrapper(ExternalImageId aExternalImageId);
  30   RenderTextureHostWrapper(const layers::RemoteTextureId aTextureId,
  31                            const layers::RemoteTextureOwnerId aOwnerId,
  32                            const base::ProcessId aForPid);
  33
  34   // RenderTextureHost
  35   wr::WrExternalImage Lock(uint8_t aChannelIndex, gl::GLContext* aGL) override;
  36   void Unlock() override;
  37   void ClearCachedResources() override;
  38   void PrepareForUse() override;
  39   void NotifyForUse() override;
  40   void NotifyNotUsed() override;
  41   bool SyncObjectNeeded() override;
  42   RenderMacIOSurfaceTextureHost* AsRenderMacIOSurfaceTextureHost() override;
  43   RenderDXGITextureHost* AsRenderDXGITextureHost() override;
  44   RenderDXGIYCbCrTextureHost* AsRenderDXGIYCbCrTextureHost() override;
  45   RenderDcompSurfaceTextureHost* AsRenderDcompSurfaceTextureHost() override;
  46   RenderAndroidHardwareBufferTextureHost*
  47   AsRenderAndroidHardwareBufferTextureHost() override;
  48   RenderAndroidSurfaceTextureHost* AsRenderAndroidSurfaceTextureHost() override;
  49   RenderTextureHostSWGL* AsRenderTextureHostSWGL() override;
  50   bool IsWrappingAsyncRemoteTexture() override;
  51   void SetIsSoftwareDecodedVideo() override;
  52   bool IsSoftwareDecodedVideo() override;
  53
  54   // RenderTextureHostSWGL
  55   size_t GetPlaneCount() const override;
  56   gfx::SurfaceFormat GetFormat() const override;
  57   gfx::ColorDepth GetColorDepth() const override;
  58   gfx::YUVRangedColorSpace GetYUVColorSpace() const override;
  59   bool MapPlane(RenderCompositor* aCompositor, uint8_t aChannelIndex,
  60                 PlaneInfo& aPlaneInfo) override;
  61   void UnmapPlanes() override;
  62
  63   // This is just a wrapper, so doesn't need to report the
  64   // size of the wrapped object (which reports itself).
  65   size_t Bytes() override { return 0; }
  66
  67  protected:
  68   // RenderTextureHost
  69   std::pair<gfx::Point, gfx::Point> GetUvCoords(
  70       gfx::IntSize aTextureSize) const override;
  71
  72  private:
  73   ~RenderTextureHostWrapper() override;
  74
  75   void EnsureTextureHost() const;
  76   void EnsureRemoteTexture() const;
  77   RenderTextureHostSWGL* EnsureRenderTextureHostSWGL() const;
  78
  79   ExternalImageId mExternalImageId;
  80   mutable RefPtr<RenderTextureHost> mTextureHost;
  81
  82   Maybe<layers::RemoteTextureId> mTextureId;
  83   Maybe<layers::RemoteTextureOwnerId> mOwnerId;
  84   Maybe<base::ProcessId> mForPid;
  85 };
  86
  87 }  // namespace wr
  88 }  // namespace mozilla
  89
  90 #endif  // MOZILLA_GFX_RENDERTEXTUREHOSTWRAPPER_H