1 files changed, 241 insertions, 0 deletions
diff --git a/gfx/2d/SourceSurfaceD2D1.cpp b/gfx/2d/SourceSurfaceD2D1.cpp
new file mode 100644
index 000000000..92b2e4d1d
--- /dev/null
+++ b/gfx/2d/SourceSurfaceD2D1.cpp
@@ -0,0 +1,241 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * 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 "SourceSurfaceD2D1.h"
+#include "DrawTargetD2D1.h"
+#include "Tools.h"
+
+namespace mozilla {
+namespace gfx {
+
+SourceSurfaceD2D1::SourceSurfaceD2D1(ID2D1Image *aImage, ID2D1DeviceContext *aDC,
+                                     SurfaceFormat aFormat, const IntSize &aSize,
+                                     DrawTargetD2D1 *aDT)
+  : mImage(aImage)
+  , mDC(aDC)
+  , mDevice(Factory::GetD2D1Device())
+  , mDrawTarget(aDT)
+{
+  aImage->QueryInterface((ID2D1Bitmap1**)getter_AddRefs(mRealizedBitmap));
+
+  mFormat = aFormat;
+  mSize = aSize;
+}
+
+SourceSurfaceD2D1::~SourceSurfaceD2D1()
+{
+}
+
+bool
+SourceSurfaceD2D1::IsValid() const
+{
+  return mDevice == Factory::GetD2D1Device();
+}
+
+already_AddRefed<DataSourceSurface>
+SourceSurfaceD2D1::GetDataSurface()
+{
+  HRESULT hr;
+
+  if (!EnsureRealizedBitmap()) {
+    gfxCriticalError() << "Failed to realize a bitmap, device " << hexa(mDevice);
+    return nullptr;
+  }
+
+  RefPtr<ID2D1Bitmap1> softwareBitmap;
+  D2D1_BITMAP_PROPERTIES1 props;
+  props.dpiX = 96;
+  props.dpiY = 96;
+  props.pixelFormat = D2DPixelFormat(mFormat);
+  props.colorContext = nullptr;
+  props.bitmapOptions = D2D1_BITMAP_OPTIONS_CANNOT_DRAW |
+                        D2D1_BITMAP_OPTIONS_CPU_READ;
+  hr = mDC->CreateBitmap(D2DIntSize(mSize), nullptr, 0, props, (ID2D1Bitmap1**)getter_AddRefs(softwareBitmap));
+
+  if (FAILED(hr)) {
+    gfxCriticalError() << "Failed to create software bitmap: " << mSize << " Code: " << hexa(hr);
+    return nullptr;
+  }
+
+  D2D1_POINT_2U point = D2D1::Point2U(0, 0);
+  D2D1_RECT_U rect = D2D1::RectU(0, 0, mSize.width, mSize.height);
+  
+  hr = softwareBitmap->CopyFromBitmap(&point, mRealizedBitmap, &rect);
+
+  if (FAILED(hr)) {
+    gfxWarning() << "Failed to readback into software bitmap. Code: " << hexa(hr);
+    return nullptr;
+  }
+
+  return MakeAndAddRef<DataSourceSurfaceD2D1>(softwareBitmap, mFormat);
+}
+
+bool
+SourceSurfaceD2D1::EnsureRealizedBitmap()
+{
+  if (mRealizedBitmap) {
+    return true;
+  }
+
+  // Why aren't we using mDevice here or anywhere else?
+  ID2D1Device* device = Factory::GetD2D1Device();
+  if (!device) {
+    return false;
+  }
+
+  RefPtr<ID2D1DeviceContext> dc;
+  device->CreateDeviceContext(D2D1_DEVICE_CONTEXT_OPTIONS_NONE, getter_AddRefs(dc));
+
+  D2D1_BITMAP_PROPERTIES1 props;
+  props.dpiX = 96;
+  props.dpiY = 96;
+  props.pixelFormat = D2DPixelFormat(mFormat);
+  props.colorContext = nullptr;
+  props.bitmapOptions = D2D1_BITMAP_OPTIONS_TARGET;
+  dc->CreateBitmap(D2DIntSize(mSize), nullptr, 0, props, (ID2D1Bitmap1**)getter_AddRefs(mRealizedBitmap));
+
+  dc->SetTarget(mRealizedBitmap);
+
+  dc->BeginDraw();
+  dc->DrawImage(mImage);
+  dc->EndDraw();
+
+  return true;
+}
+
+void
+SourceSurfaceD2D1::DrawTargetWillChange()
+{
+  // At this point in time this should always be true here.
+  MOZ_ASSERT(mRealizedBitmap);
+
+  RefPtr<ID2D1Bitmap1> oldBitmap = mRealizedBitmap;
+
+  D2D1_BITMAP_PROPERTIES1 props;
+  props.dpiX = 96;
+  props.dpiY = 96;
+  props.pixelFormat = D2DPixelFormat(mFormat);
+  props.colorContext = nullptr;
+  props.bitmapOptions = D2D1_BITMAP_OPTIONS_TARGET;
+  HRESULT hr = mDC->CreateBitmap(D2DIntSize(mSize), nullptr, 0, props, (ID2D1Bitmap1**)getter_AddRefs(mRealizedBitmap));
+
+  if (FAILED(hr)) {
+    gfxCriticalError() << "Failed to create bitmap to make DrawTarget copy. Size: " << mSize << " Code: " << hexa(hr);
+    MarkIndependent();
+    return;
+  }
+
+  D2D1_POINT_2U point = D2D1::Point2U(0, 0);
+  D2D1_RECT_U rect = D2D1::RectU(0, 0, mSize.width, mSize.height);
+  mRealizedBitmap->CopyFromBitmap(&point, oldBitmap, &rect);
+  mImage = mRealizedBitmap;
+
+  DrawTargetD2D1::mVRAMUsageSS += mSize.width * mSize.height * BytesPerPixel(mFormat);
+
+  // We now no longer depend on the source surface content remaining the same.
+  MarkIndependent();
+}
+
+void
+SourceSurfaceD2D1::MarkIndependent()
+{
+  if (mDrawTarget) {
+    MOZ_ASSERT(mDrawTarget->mSnapshot == this);
+    mDrawTarget->mSnapshot = nullptr;
+    mDrawTarget = nullptr;
+  }
+}
+
+DataSourceSurfaceD2D1::DataSourceSurfaceD2D1(ID2D1Bitmap1 *aMappableBitmap, SurfaceFormat aFormat)
+  : mBitmap(aMappableBitmap)
+  , mFormat(aFormat)
+  , mMapped(false)
+{
+}
+
+DataSourceSurfaceD2D1::~DataSourceSurfaceD2D1()
+{
+  if (mMapped) {
+    mBitmap->Unmap();
+  }
+}
+
+IntSize
+DataSourceSurfaceD2D1::GetSize() const
+{
+  D2D1_SIZE_F size = mBitmap->GetSize();
+
+  return IntSize(int32_t(size.width), int32_t(size.height));
+}
+
+uint8_t*
+DataSourceSurfaceD2D1::GetData()
+{
+  EnsureMapped();
+
+  return mMap.bits;
+}
+
+bool
+DataSourceSurfaceD2D1::Map(MapType aMapType, MappedSurface *aMappedSurface)
+{
+  // DataSourceSurfaces used with the new Map API should not be used with GetData!!
+  MOZ_ASSERT(!mMapped);
+  MOZ_ASSERT(!mIsMapped);
+
+  D2D1_MAP_OPTIONS options;
+  if (aMapType == MapType::READ) {
+    options = D2D1_MAP_OPTIONS_READ;
+  } else {
+    gfxWarning() << "Attempt to map D2D1 DrawTarget for writing.";
+    return false;
+  }
+
+  D2D1_MAPPED_RECT map;
+  if (FAILED(mBitmap->Map(D2D1_MAP_OPTIONS_READ, &map))) {
+    gfxCriticalError() << "Failed to map bitmap (M).";
+    return false;
+  }
+  aMappedSurface->mData = map.bits;
+  aMappedSurface->mStride = map.pitch;
+
+  mIsMapped = !!aMappedSurface->mData;
+  return mIsMapped;
+}
+
+void
+DataSourceSurfaceD2D1::Unmap()
+{
+  MOZ_ASSERT(mIsMapped);
+
+  mIsMapped = false;
+  mBitmap->Unmap();
+}
+
+int32_t
+DataSourceSurfaceD2D1::Stride()
+{
+  EnsureMapped();
+
+  return mMap.pitch;
+}
+
+void
+DataSourceSurfaceD2D1::EnsureMapped()
+{
+  // Do not use GetData() after having used Map!
+  MOZ_ASSERT(!mIsMapped);
+  if (mMapped) {
+    return;
+  }
+  if (FAILED(mBitmap->Map(D2D1_MAP_OPTIONS_READ, &mMap))) {
+    gfxCriticalError() << "Failed to map bitmap (EM).";
+    return;
+  }
+  mMapped = true;
+}
+
+}
+}