Adding upstream version 115.7.0esr.upstream/115.7.0esr

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

1 files changed, 310 insertions, 0 deletions

diff --git a/image/BlobSurfaceProvider.cpp b/image/BlobSurfaceProvider.cpp
new file mode 100644
index 0000000000..1e9e8dacca
--- /dev/null
+++ b/image/BlobSurfaceProvider.cpp
@@ -0,0 +1,310 @@
+/* -*- 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 "BlobSurfaceProvider.h"
+#include "AutoRestoreSVGState.h"
+#include "ImageRegion.h"
+#include "SVGDocumentWrapper.h"
+#include "mozilla/PresShell.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/gfx/2D.h"
+#include "mozilla/layers/IpcResourceUpdateQueue.h"
+#include "mozilla/layers/WebRenderBridgeChild.h"
+#include "mozilla/layers/WebRenderDrawEventRecorder.h"
+
+using namespace mozilla::gfx;
+using namespace mozilla::layers;
+
+namespace mozilla::image {
+
+BlobSurfaceProvider::BlobSurfaceProvider(
+    const ImageKey aImageKey, const SurfaceKey& aSurfaceKey,
+    image::SVGDocumentWrapper* aSVGDocumentWrapper, uint32_t aImageFlags)
+    : ISurfaceProvider(aImageKey, aSurfaceKey,
+                       AvailabilityState::StartAvailable()),
+      mSVGDocumentWrapper(aSVGDocumentWrapper),
+      mImageFlags(aImageFlags) {
+  MOZ_ASSERT(mSVGDocumentWrapper);
+  MOZ_ASSERT(aImageFlags & imgIContainer::FLAG_RECORD_BLOB);
+}
+
+BlobSurfaceProvider::~BlobSurfaceProvider() {
+  if (NS_IsMainThread()) {
+    DestroyKeys(mKeys);
+    return;
+  }
+
+  NS_ReleaseOnMainThread("SourceSurfaceBlobImage::mSVGDocumentWrapper",
+                         mSVGDocumentWrapper.forget());
+  NS_DispatchToMainThread(
+      NS_NewRunnableFunction("SourceSurfaceBlobImage::DestroyKeys",
+                             [keys = std::move(mKeys)] { DestroyKeys(keys); }));
+}
+
+/* static */ void BlobSurfaceProvider::DestroyKeys(
+    const AutoTArray<BlobImageKeyData, 1>& aKeys) {
+  for (const auto& entry : aKeys) {
+    if (entry.mManager->IsDestroyed()) {
+      continue;
+    }
+
+    WebRenderBridgeChild* wrBridge = entry.mManager->WrBridge();
+    if (!wrBridge || !wrBridge->MatchesNamespace(entry.mBlobKey)) {
+      continue;
+    }
+
+    entry.mManager->GetRenderRootStateManager()->AddBlobImageKeyForDiscard(
+        entry.mBlobKey);
+  }
+}
+
+nsresult BlobSurfaceProvider::UpdateKey(
+    layers::RenderRootStateManager* aManager,
+    wr::IpcResourceUpdateQueue& aResources, wr::ImageKey& aKey) {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  layers::WebRenderLayerManager* manager = aManager->LayerManager();
+  MOZ_ASSERT(manager);
+
+  Maybe<wr::BlobImageKey> key;
+  auto i = mKeys.Length();
+  while (i > 0) {
+    --i;
+    BlobImageKeyData& entry = mKeys[i];
+    if (entry.mManager->IsDestroyed()) {
+      mKeys.RemoveElementAt(i);
+    } else if (entry.mManager == manager) {
+      WebRenderBridgeChild* wrBridge = manager->WrBridge();
+      MOZ_ASSERT(wrBridge);
+
+      bool ownsKey = wrBridge->MatchesNamespace(entry.mBlobKey);
+      if (ownsKey && !entry.mDirty) {
+        key.emplace(entry.mBlobKey);
+        continue;
+      }
+
+      // Even if the manager is the same, its underlying WebRenderBridgeChild
+      // can change state. Either our namespace differs, and our old key has
+      // already been discarded, or the blob has changed. Either way, we need
+      // to rerecord it.
+      auto newEntry = RecordDrawing(manager, aResources,
+                                    ownsKey ? Some(entry.mBlobKey) : Nothing());
+      if (!newEntry) {
+        if (ownsKey) {
+          aManager->AddBlobImageKeyForDiscard(entry.mBlobKey);
+        }
+        mKeys.RemoveElementAt(i);
+        continue;
+      }
+
+      key.emplace(newEntry.ref().mBlobKey);
+      entry = std::move(newEntry.ref());
+      MOZ_ASSERT(!entry.mDirty);
+    }
+  }
+
+  // We didn't find an entry. Attempt to record the blob with a new key.
+  if (!key) {
+    auto newEntry = RecordDrawing(manager, aResources, Nothing());
+    if (newEntry) {
+      key.emplace(newEntry.ref().mBlobKey);
+      mKeys.AppendElement(std::move(newEntry.ref()));
+    }
+  }
+
+  if (key) {
+    aKey = wr::AsImageKey(key.value());
+    return NS_OK;
+  }
+
+  return NS_ERROR_FAILURE;
+}
+
+void BlobSurfaceProvider::InvalidateRecording() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  auto i = mKeys.Length();
+  while (i > 0) {
+    --i;
+    BlobImageKeyData& entry = mKeys[i];
+    if (entry.mManager->IsDestroyed()) {
+      mKeys.RemoveElementAt(i);
+    } else {
+      entry.mDirty = true;
+    }
+  }
+}
+
+Maybe<BlobImageKeyData> BlobSurfaceProvider::RecordDrawing(
+    WebRenderLayerManager* aManager, wr::IpcResourceUpdateQueue& aResources,
+    Maybe<wr::BlobImageKey> aBlobKey) {
+  MOZ_ASSERT(!aManager->IsDestroyed());
+
+  if (mSVGDocumentWrapper->IsDrawing()) {
+    return Nothing();
+  }
+
+  // This is either our first pass, or we have a stale key requiring us to
+  // re-record the SVG image draw commands.
+  auto* rootManager = aManager->GetRenderRootStateManager();
+  auto* wrBridge = aManager->WrBridge();
+
+  const auto& size = GetSurfaceKey().Size();
+  const auto& region = GetSurfaceKey().Region();
+  const auto& svgContext = GetSurfaceKey().SVGContext();
+
+  IntRect imageRect = region ? region->Rect() : IntRect(IntPoint(0, 0), size);
+  IntRect imageRectOrigin = imageRect - imageRect.TopLeft();
+
+  std::vector<RefPtr<ScaledFont>> fonts;
+  bool validFonts = true;
+  RefPtr<WebRenderDrawEventRecorder> recorder =
+      MakeAndAddRef<WebRenderDrawEventRecorder>(
+          [&](MemStream& aStream,
+              std::vector<RefPtr<ScaledFont>>& aScaledFonts) {
+            auto count = aScaledFonts.size();
+            aStream.write((const char*)&count, sizeof(count));
+
+            for (auto& scaled : aScaledFonts) {
+              Maybe<wr::FontInstanceKey> key =
+                  wrBridge->GetFontKeyForScaledFont(scaled, aResources);
+              if (key.isNothing()) {
+                validFonts = false;
+                break;
+              }
+              BlobFont font = {key.value(), scaled};
+              aStream.write((const char*)&font, sizeof(font));
+            }
+
+            fonts = std::move(aScaledFonts);
+          });
+
+  RefPtr<DrawTarget> dummyDt =
+      gfxPlatform::GetPlatform()->ScreenReferenceDrawTarget();
+  RefPtr<DrawTarget> dt =
+      Factory::CreateRecordingDrawTarget(recorder, dummyDt, imageRectOrigin);
+
+  if (!dt || !dt->IsValid()) {
+    return Nothing();
+  }
+
+  bool contextPaint = svgContext.GetContextPaint();
+
+  float animTime = (GetSurfaceKey().Playback() == PlaybackType::eStatic)
+                       ? 0.0f
+                       : mSVGDocumentWrapper->GetCurrentTimeAsFloat();
+
+  IntSize viewportSize = size;
+  if (auto cssViewportSize = svgContext.GetViewportSize()) {
+    // XXX losing unit
+    viewportSize.SizeTo(cssViewportSize->width, cssViewportSize->height);
+  }
+
+  {
+    // Get (& sanity-check) the helper-doc's presShell
+    RefPtr<PresShell> presShell = mSVGDocumentWrapper->GetPresShell();
+    MOZ_ASSERT(presShell, "GetPresShell returned null for an SVG image?");
+
+    nsPresContext* presContext = presShell->GetPresContext();
+    MOZ_ASSERT(presContext, "pres shell w/out pres context");
+
+    auto* doc = presShell->GetDocument();
+    [[maybe_unused]] nsIURI* uri = doc ? doc->GetDocumentURI() : nullptr;
+    AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING(
+        "SVG Image recording", GRAPHICS,
+        nsPrintfCString("(%d,%d) %dx%d from %dx%d %s", imageRect.x, imageRect.y,
+                        imageRect.width, imageRect.height, size.width,
+                        size.height,
+                        uri ? uri->GetSpecOrDefault().get() : "N/A"));
+
+    AutoRestoreSVGState autoRestore(svgContext, animTime, mSVGDocumentWrapper,
+                                    contextPaint);
+
+    mSVGDocumentWrapper->UpdateViewportBounds(viewportSize);
+    mSVGDocumentWrapper->FlushImageTransformInvalidation();
+
+    gfxContext ctx(dt);
+
+    nsRect svgRect;
+    auto auPerDevPixel = presContext->AppUnitsPerDevPixel();
+    if (size != viewportSize) {
+      auto scaleX = double(size.width) / viewportSize.width;
+      auto scaleY = double(size.height) / viewportSize.height;
+      ctx.SetMatrix(Matrix::Scaling(float(scaleX), float(scaleY)));
+
+      auto scaledVisibleRect = IntRectToRect(imageRect);
+      scaledVisibleRect.Scale(float(auPerDevPixel / scaleX),
+                              float(auPerDevPixel / scaleY));
+      scaledVisibleRect.Round();
+      svgRect.SetRect(
+          int32_t(scaledVisibleRect.x), int32_t(scaledVisibleRect.y),
+          int32_t(scaledVisibleRect.width), int32_t(scaledVisibleRect.height));
+    } else {
+      auto scaledVisibleRect(imageRect);
+      scaledVisibleRect.Scale(auPerDevPixel);
+      svgRect.SetRect(scaledVisibleRect.x, scaledVisibleRect.y,
+                      scaledVisibleRect.width, scaledVisibleRect.height);
+    }
+
+    RenderDocumentFlags renderDocFlags =
+        RenderDocumentFlags::IgnoreViewportScrolling;
+    if (!(mImageFlags & imgIContainer::FLAG_SYNC_DECODE)) {
+      renderDocFlags |= RenderDocumentFlags::AsyncDecodeImages;
+    }
+    if (mImageFlags & imgIContainer::FLAG_HIGH_QUALITY_SCALING) {
+      renderDocFlags |= RenderDocumentFlags::UseHighQualityScaling;
+    }
+
+    presShell->RenderDocument(svgRect, renderDocFlags,
+                              NS_RGBA(0, 0, 0, 0),  // transparent
+                              &ctx);
+  }
+
+  recorder->FlushItem(imageRectOrigin);
+  recorder->Finish();
+
+  if (!validFonts) {
+    gfxCriticalNote << "Failed serializing fonts for blob vector image";
+    return Nothing();
+  }
+
+  Range<uint8_t> bytes((uint8_t*)recorder->mOutputStream.mData,
+                       recorder->mOutputStream.mLength);
+  wr::BlobImageKey key = aBlobKey
+                             ? aBlobKey.value()
+                             : wr::BlobImageKey{wrBridge->GetNextImageKey()};
+  wr::ImageDescriptor descriptor(imageRect.Size(), 0, SurfaceFormat::OS_RGBA,
+                                 wr::OpacityType::HasAlphaChannel);
+
+  auto visibleRect = ImageIntRect::FromUnknownRect(imageRectOrigin);
+  if (aBlobKey) {
+    if (!aResources.UpdateBlobImage(key, descriptor, bytes, visibleRect,
+                                    visibleRect)) {
+      return Nothing();
+    }
+  } else if (!aResources.AddBlobImage(key, descriptor, bytes, visibleRect)) {
+    return Nothing();
+  }
+
+  std::vector<RefPtr<SourceSurface>> externalSurfaces;
+  recorder->TakeExternalSurfaces(externalSurfaces);
+
+  for (auto& surface : externalSurfaces) {
+    // While we don't use the image key with the surface, because the blob image
+    // renderer doesn't have easy access to the resource set, we still want to
+    // ensure one is generated. That will ensure the surface remains alive until
+    // at least the last epoch which the blob image could be used in.
+    wr::ImageKey key = {};
+    DebugOnly<nsresult> rv =
+        SharedSurfacesChild::Share(surface, rootManager, aResources, key);
+    MOZ_ASSERT(rv.value != NS_ERROR_NOT_IMPLEMENTED);
+  }
+
+  return Some(BlobImageKeyData(aManager, key, std::move(fonts),
+                               std::move(externalSurfaces)));
+}
+
+}  // namespace mozilla::image