1 files changed, 48 insertions, 0 deletions
diff --git a/widget/android/AndroidWidgetUtils.cpp b/widget/android/AndroidWidgetUtils.cpp
new file mode 100644
index 0000000000..c013a5b4f8
--- /dev/null
+++ b/widget/android/AndroidWidgetUtils.cpp
@@ -0,0 +1,48 @@
+/* -*- Mode: c++; c-basic-offset: 2; tab-width: 20; indent-tabs-mode: nil; -*-
+ * vim: set sw=2 ts=4 expandtab:
+ * 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 "AndroidWidgetUtils.h"
+
+#include "mozilla/gfx/2D.h"
+#include "mozilla/gfx/Swizzle.h"
+
+using namespace mozilla::gfx;
+
+namespace mozilla::widget {
+
+// static
+already_AddRefed<DataSourceSurface>
+AndroidWidgetUtils::GetDataSourceSurfaceForAndroidBitmap(
+    gfx::SourceSurface* aSurface, const LayoutDeviceIntRect* aRect,
+    uint32_t aStride) {
+  RefPtr<DataSourceSurface> srcDataSurface = aSurface->GetDataSurface();
+  if (NS_WARN_IF(!srcDataSurface)) {
+    return nullptr;
+  }
+
+  DataSourceSurface::ScopedMap sourceMap(srcDataSurface,
+                                         DataSourceSurface::READ);
+
+  RefPtr<DataSourceSurface> destDataSurface =
+      gfx::Factory::CreateDataSourceSurfaceWithStride(
+          aRect ? IntSize(aRect->width, aRect->height)
+                : srcDataSurface->GetSize(),
+          SurfaceFormat::R8G8B8A8, aStride ? aStride : sourceMap.GetStride());
+  if (NS_WARN_IF(!destDataSurface)) {
+    return nullptr;
+  }
+
+  DataSourceSurface::ScopedMap destMap(destDataSurface,
+                                       DataSourceSurface::READ_WRITE);
+
+  SwizzleData(sourceMap.GetData(), sourceMap.GetStride(), aSurface->GetFormat(),
+              destMap.GetData(), destMap.GetStride(), SurfaceFormat::R8G8B8A8,
+              destDataSurface->GetSize());
+
+  return destDataSurface.forget();
+}
+
+}  // namespace mozilla::widget