Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 156 insertions, 0 deletions

diff --git a/gfx/layers/ipc/SharedRGBImage.cpp b/gfx/layers/ipc/SharedRGBImage.cpp
new file mode 100644
index 0000000000..392cb09610
--- /dev/null
+++ b/gfx/layers/ipc/SharedRGBImage.cpp
@@ -0,0 +1,156 @@
+/* -*- 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 "SharedRGBImage.h"
+#include "ImageTypes.h"         // for ImageFormat::SHARED_RGB, etc
+#include "mozilla/ipc/Shmem.h"  // for Shmem
+#include "gfx2DGlue.h"          // for ImageFormatToSurfaceFormat, etc
+#include "gfxPlatform.h"        // for gfxPlatform, gfxImageFormat
+#include "mozilla/gfx/Point.h"  // for IntSIze
+#include "mozilla/layers/BufferTexture.h"
+#include "mozilla/layers/ISurfaceAllocator.h"  // for ISurfaceAllocator, etc
+#include "mozilla/layers/ImageClient.h"        // for ImageClient
+#include "mozilla/layers/LayersSurfaces.h"     // for SurfaceDescriptor, etc
+#include "mozilla/layers/TextureClient.h"      // for BufferTextureClient, etc
+#include "mozilla/layers/TextureClientRecycleAllocator.h"  // for ITextureClientAllocationHelper
+#include "mozilla/layers/ImageBridgeChild.h"  // for ImageBridgeChild
+#include "mozilla/mozalloc.h"                 // for operator delete, etc
+#include "nsDebug.h"                          // for NS_WARNING, NS_ASSERTION
+#include "nsISupportsImpl.h"                  // for Image::AddRef, etc
+#include "nsProxyRelease.h"
+#include "nsRect.h"  // for mozilla::gfx::IntRect
+
+// Just big enough for a 1080p RGBA32 frame
+#define MAX_FRAME_SIZE (16 * 1024 * 1024)
+
+namespace mozilla {
+namespace layers {
+
+class TextureClientForRawBufferAccessAllocationHelper
+    : public ITextureClientAllocationHelper {
+ public:
+  TextureClientForRawBufferAccessAllocationHelper(gfx::SurfaceFormat aFormat,
+                                                  gfx::IntSize aSize,
+                                                  TextureFlags aTextureFlags)
+      : ITextureClientAllocationHelper(aFormat, aSize, BackendSelector::Content,
+                                       aTextureFlags, ALLOC_DEFAULT) {}
+
+  bool IsCompatible(TextureClient* aTextureClient) override {
+    bool ret = aTextureClient->GetFormat() == mFormat &&
+               aTextureClient->GetSize() == mSize;
+    return ret;
+  }
+
+  already_AddRefed<TextureClient> Allocate(
+      KnowsCompositor* aAllocator) override {
+    return TextureClient::CreateForRawBufferAccess(
+        aAllocator, mFormat, mSize, gfx::BackendType::NONE, mTextureFlags);
+  }
+};
+
+SharedRGBImage::SharedRGBImage(ImageClient* aCompositable)
+    : Image(nullptr, ImageFormat::SHARED_RGB), mCompositable(aCompositable) {
+  MOZ_COUNT_CTOR(SharedRGBImage);
+}
+
+SharedRGBImage::SharedRGBImage(TextureClientRecycleAllocator* aRecycleAllocator)
+    : Image(nullptr, ImageFormat::SHARED_RGB),
+      mRecycleAllocator(aRecycleAllocator) {
+  MOZ_COUNT_CTOR(SharedRGBImage);
+}
+
+SharedRGBImage::~SharedRGBImage() {
+  MOZ_COUNT_DTOR(SharedRGBImage);
+  NS_ReleaseOnMainThread("SharedRGBImage::mSourceSurface",
+                         mSourceSurface.forget());
+}
+
+TextureClientRecycleAllocator* SharedRGBImage::RecycleAllocator() {
+  static const uint32_t MAX_POOLED_VIDEO_COUNT = 5;
+
+  if (!mRecycleAllocator && mCompositable) {
+    if (!mCompositable->HasTextureClientRecycler()) {
+      // Initialize TextureClientRecycler
+      mCompositable->GetTextureClientRecycler()->SetMaxPoolSize(
+          MAX_POOLED_VIDEO_COUNT);
+    }
+    mRecycleAllocator = mCompositable->GetTextureClientRecycler();
+  }
+  return mRecycleAllocator;
+}
+
+bool SharedRGBImage::Allocate(gfx::IntSize aSize, gfx::SurfaceFormat aFormat) {
+  mSize = aSize;
+
+  TextureFlags flags =
+      mCompositable ? mCompositable->GetTextureFlags() : TextureFlags::DEFAULT;
+  {
+    TextureClientForRawBufferAccessAllocationHelper helper(aFormat, aSize,
+                                                           flags);
+    mTextureClient = RecycleAllocator()->CreateOrRecycle(helper);
+  }
+
+  return !!mTextureClient;
+}
+
+gfx::IntSize SharedRGBImage::GetSize() const { return mSize; }
+
+TextureClient* SharedRGBImage::GetTextureClient(
+    KnowsCompositor* aKnowsCompositor) {
+  return mTextureClient.get();
+}
+
+static void ReleaseTextureClient(void* aData) {
+  RELEASE_MANUALLY(static_cast<TextureClient*>(aData));
+}
+
+static gfx::UserDataKey sTextureClientKey;
+
+already_AddRefed<gfx::SourceSurface> SharedRGBImage::GetAsSourceSurface() {
+  NS_ASSERTION(NS_IsMainThread(), "Must be main thread");
+
+  if (mSourceSurface) {
+    RefPtr<gfx::SourceSurface> surface(mSourceSurface);
+    return surface.forget();
+  }
+
+  RefPtr<gfx::SourceSurface> surface;
+  {
+    // We are 'borrowing' the DrawTarget and retaining a permanent reference to
+    // the underlying data (via the surface). It is in this instance since we
+    // know that the TextureClient is always wrapping a BufferTextureData and
+    // therefore it won't go away underneath us.
+    BufferTextureData* decoded_buffer =
+        mTextureClient->GetInternalData()->AsBufferTextureData();
+    RefPtr<gfx::DrawTarget> drawTarget = decoded_buffer->BorrowDrawTarget();
+
+    if (!drawTarget) {
+      return nullptr;
+    }
+
+    surface = drawTarget->Snapshot();
+    if (!surface) {
+      return nullptr;
+    }
+
+    // The surface may outlive the owning TextureClient. So, we need to ensure
+    // that the surface keeps the TextureClient alive via a reference held in
+    // user data. The TextureClient's DrawTarget only has a weak reference to
+    // the surface, so we won't create any cycles by just referencing the
+    // TextureClient.
+    if (!surface->GetUserData(&sTextureClientKey)) {
+      surface->AddUserData(&sTextureClientKey, mTextureClient,
+                           ReleaseTextureClient);
+      ADDREF_MANUALLY(mTextureClient);
+    }
+  }
+
+  mSourceSurface = surface;
+  return surface.forget();
+}
+
+}  // namespace layers
+}  // namespace mozilla