1 files changed, 212 insertions, 0 deletions
diff --git a/gfx/layers/wr/WebRenderTextureHost.cpp b/gfx/layers/wr/WebRenderTextureHost.cpp
new file mode 100644
index 0000000000..aa4215453f
--- /dev/null
+++ b/gfx/layers/wr/WebRenderTextureHost.cpp
@@ -0,0 +1,212 @@
+/* -*- 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/. */
+
+#include "WebRenderTextureHost.h"
+
+#include "mozilla/layers/ImageDataSerializer.h"
+#include "mozilla/layers/LayersSurfaces.h"
+#include "mozilla/layers/TextureSourceProvider.h"
+#include "mozilla/webrender/RenderThread.h"
+#include "mozilla/webrender/WebRenderAPI.h"
+
+#ifdef MOZ_WIDGET_ANDROID
+#  include "mozilla/layers/TextureHostOGL.h"
+#endif
+
+namespace mozilla::layers {
+
+class ScheduleHandleRenderTextureOps : public wr::NotificationHandler {
+ public:
+  explicit ScheduleHandleRenderTextureOps() {}
+
+  virtual void Notify(wr::Checkpoint aCheckpoint) override {
+    if (aCheckpoint == wr::Checkpoint::FrameTexturesUpdated) {
+      MOZ_ASSERT(wr::RenderThread::IsInRenderThread());
+      wr::RenderThread::Get()->HandleRenderTextureOps();
+    } else {
+      MOZ_ASSERT(aCheckpoint == wr::Checkpoint::TransactionDropped);
+    }
+  }
+
+ protected:
+};
+
+WebRenderTextureHost::WebRenderTextureHost(
+    TextureFlags aFlags, TextureHost* aTexture,
+    const wr::ExternalImageId& aExternalImageId)
+    : TextureHost(TextureHostType::Unknown, aFlags),
+      mWrappedTextureHost(aTexture) {
+  MOZ_ASSERT(mWrappedTextureHost);
+  // The wrapped textureHost will be used in WebRender, and the WebRender could
+  // run at another thread. It's hard to control the life-time when gecko
+  // receives PTextureParent destroy message. It's possible that textureHost is
+  // still used by WebRender. So, we only accept the textureHost without
+  // DEALLOCATE_CLIENT flag here. If the buffer deallocation is controlled by
+  // parent, we could do something to make sure the wrapped textureHost is not
+  // used by WebRender and then release it.
+  MOZ_ASSERT(!(aFlags & TextureFlags::DEALLOCATE_CLIENT));
+  MOZ_COUNT_CTOR(WebRenderTextureHost);
+
+  mExternalImageId = Some(aExternalImageId);
+}
+
+WebRenderTextureHost::~WebRenderTextureHost() {
+  MOZ_COUNT_DTOR(WebRenderTextureHost);
+}
+
+wr::ExternalImageId WebRenderTextureHost::GetExternalImageKey() {
+  if (IsValid()) {
+    mWrappedTextureHost->EnsureRenderTexture(mExternalImageId);
+  }
+  MOZ_ASSERT(mWrappedTextureHost->mExternalImageId.isSome());
+  return mWrappedTextureHost->mExternalImageId.ref();
+}
+
+bool WebRenderTextureHost::IsValid() { return mWrappedTextureHost->IsValid(); }
+
+void WebRenderTextureHost::UnbindTextureSource() {
+  if (mWrappedTextureHost->AsBufferTextureHost()) {
+    mWrappedTextureHost->UnbindTextureSource();
+  }
+  // Handle read unlock
+  TextureHost::UnbindTextureSource();
+}
+
+already_AddRefed<gfx::DataSourceSurface> WebRenderTextureHost::GetAsSurface() {
+  return mWrappedTextureHost->GetAsSurface();
+}
+
+gfx::ColorDepth WebRenderTextureHost::GetColorDepth() const {
+  return mWrappedTextureHost->GetColorDepth();
+}
+
+gfx::YUVColorSpace WebRenderTextureHost::GetYUVColorSpace() const {
+  return mWrappedTextureHost->GetYUVColorSpace();
+}
+
+gfx::ColorRange WebRenderTextureHost::GetColorRange() const {
+  return mWrappedTextureHost->GetColorRange();
+}
+
+gfx::IntSize WebRenderTextureHost::GetSize() const {
+  return mWrappedTextureHost->GetSize();
+}
+
+gfx::SurfaceFormat WebRenderTextureHost::GetFormat() const {
+  return mWrappedTextureHost->GetFormat();
+}
+
+void WebRenderTextureHost::NotifyNotUsed() {
+#ifdef MOZ_WIDGET_ANDROID
+  // When SurfaceTextureHost is wrapped by RemoteTextureHostWrapper,
+  // NotifyNotUsed() is handled by SurfaceTextureHost.
+  if (IsWrappingSurfaceTextureHost() &&
+      !mWrappedTextureHost->AsRemoteTextureHostWrapper()) {
+    wr::RenderThread::Get()->NotifyNotUsed(GetExternalImageKey());
+  }
+#endif
+  if (mWrappedTextureHost->AsRemoteTextureHostWrapper()) {
+    mWrappedTextureHost->NotifyNotUsed();
+  }
+  TextureHost::NotifyNotUsed();
+}
+
+void WebRenderTextureHost::MaybeNotifyForUse(wr::TransactionBuilder& aTxn) {
+#if defined(MOZ_WIDGET_ANDROID)
+  if (IsWrappingSurfaceTextureHost() &&
+      !mWrappedTextureHost->AsRemoteTextureHostWrapper()) {
+    wr::RenderThread::Get()->NotifyForUse(GetExternalImageKey());
+    aTxn.Notify(wr::Checkpoint::FrameTexturesUpdated,
+                MakeUnique<ScheduleHandleRenderTextureOps>());
+  }
+#endif
+}
+
+bool WebRenderTextureHost::IsWrappingSurfaceTextureHost() {
+  return mWrappedTextureHost->IsWrappingSurfaceTextureHost();
+}
+
+void WebRenderTextureHost::PrepareForUse() {
+  // When SurfaceTextureHost is wrapped by RemoteTextureHostWrapper,
+  // PrepareForUse() is handled by SurfaceTextureHost.
+  if ((IsWrappingSurfaceTextureHost() &&
+       !mWrappedTextureHost->AsRemoteTextureHostWrapper()) ||
+      mWrappedTextureHost->AsBufferTextureHost()) {
+    // Call PrepareForUse on render thread.
+    // See RenderAndroidSurfaceTextureHostOGL::PrepareForUse.
+    wr::RenderThread::Get()->PrepareForUse(GetExternalImageKey());
+  }
+}
+
+gfx::SurfaceFormat WebRenderTextureHost::GetReadFormat() const {
+  return mWrappedTextureHost->GetReadFormat();
+}
+
+int32_t WebRenderTextureHost::GetRGBStride() {
+  gfx::SurfaceFormat format = GetFormat();
+  if (GetFormat() == gfx::SurfaceFormat::YUV) {
+    // XXX this stride is used until yuv image rendering by webrender is used.
+    // Software converted RGB buffers strides are aliened to 16
+    return gfx::GetAlignedStride<16>(
+        GetSize().width, BytesPerPixel(gfx::SurfaceFormat::B8G8R8A8));
+  }
+  return ImageDataSerializer::ComputeRGBStride(format, GetSize().width);
+}
+
+bool WebRenderTextureHost::NeedsDeferredDeletion() const {
+  return mWrappedTextureHost->NeedsDeferredDeletion();
+}
+
+uint32_t WebRenderTextureHost::NumSubTextures() {
+  return mWrappedTextureHost->NumSubTextures();
+}
+
+void WebRenderTextureHost::PushResourceUpdates(
+    wr::TransactionBuilder& aResources, ResourceUpdateOp aOp,
+    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID) {
+  MOZ_ASSERT(GetExternalImageKey() == aExtID);
+
+  mWrappedTextureHost->PushResourceUpdates(aResources, aOp, aImageKeys, aExtID);
+}
+
+void WebRenderTextureHost::PushDisplayItems(
+    wr::DisplayListBuilder& aBuilder, const wr::LayoutRect& aBounds,
+    const wr::LayoutRect& aClip, wr::ImageRendering aFilter,
+    const Range<wr::ImageKey>& aImageKeys, PushDisplayItemFlagSet aFlags) {
+  MOZ_ASSERT(aImageKeys.length() > 0);
+
+  mWrappedTextureHost->PushDisplayItems(aBuilder, aBounds, aClip, aFilter,
+                                        aImageKeys, aFlags);
+}
+
+bool WebRenderTextureHost::SupportsExternalCompositing(
+    WebRenderBackend aBackend) {
+  return mWrappedTextureHost->SupportsExternalCompositing(aBackend);
+}
+
+void WebRenderTextureHost::SetAcquireFence(
+    mozilla::ipc::FileDescriptor&& aFenceFd) {
+  mWrappedTextureHost->SetAcquireFence(std::move(aFenceFd));
+}
+
+void WebRenderTextureHost::SetReleaseFence(
+    mozilla::ipc::FileDescriptor&& aFenceFd) {
+  mWrappedTextureHost->SetReleaseFence(std::move(aFenceFd));
+}
+
+mozilla::ipc::FileDescriptor WebRenderTextureHost::GetAndResetReleaseFence() {
+  return mWrappedTextureHost->GetAndResetReleaseFence();
+}
+
+AndroidHardwareBuffer* WebRenderTextureHost::GetAndroidHardwareBuffer() const {
+  return mWrappedTextureHost->GetAndroidHardwareBuffer();
+}
+
+TextureHostType WebRenderTextureHost::GetTextureHostType() {
+  return mWrappedTextureHost->GetTextureHostType();
+}
+
+}  // namespace mozilla::layers