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Minimal test - lines (10, 93)

Code

namespace mozilla {
namespace widget {

AndroidCompositorWidget::AndroidCompositorWidget(
    const layers::CompositorOptions& aOptions, nsBaseWidget* aWidget)
    : InProcessCompositorWidget(aOptions, aWidget),
      mNativeWindow(nullptr),
      mFormat(WINDOW_FORMAT_RGBA_8888) {}

AndroidCompositorWidget::~AndroidCompositorWidget() {
  if (mNativeWindow) {
    ANativeWindow_release(mNativeWindow);
  }
}

already_AddRefed
AndroidCompositorWidget::StartRemoteDrawingInRegion(
    const LayoutDeviceIntRegion& aInvalidRegion,
    layers::BufferMode* aBufferMode) {
  if (!mNativeWindow) {
    EGLNativeWindowType window = GetEGLNativeWindow();
    JNIEnv* const env = jni::GetEnvForThread();
    mNativeWindow =
        ANativeWindow_fromSurface(env, reinterpret_cast(window));
    if (mNativeWindow) {
      mFormat = ANativeWindow_getFormat(mNativeWindow);
      ANativeWindow_acquire(mNativeWindow);
    } else {
      return nullptr;
    }
  }

  if (mFormat != WINDOW_FORMAT_RGBA_8888 &&
      mFormat != WINDOW_FORMAT_RGBX_8888) {
    gfxCriticalNoteOnce << "Non supported format: " << mFormat;
    return nullptr;
  }

  // XXX Handle inOutDirtyBounds
  if (ANativeWindow_lock(mNativeWindow, &mBuffer, nullptr) != 0) {
    return nullptr;
  }

  const int bpp = 4;
  gfx::SurfaceFormat format = gfx::SurfaceFormat::B8G8R8A8;
  if (mFormat == WINDOW_FORMAT_RGBX_8888) {
    format = gfx::SurfaceFormat::B8G8R8X8;
  }

  RefPtr dt = gfx::Factory::CreateDrawTargetForData(
      gfx::BackendType::SKIA, static_cast(mBuffer.bits),
      gfx::IntSize(mBuffer.width, mBuffer.height), mBuffer.stride * bpp, format,
      true);

  return dt.forget();
}

void AndroidCompositorWidget::EndRemoteDrawingInRegion(
    gfx::DrawTarget* aDrawTarget, const LayoutDeviceIntRegion& aInvalidRegion) {
  // XXX Needs convert BGRA to RGBA. RGBA is not supported by sw-wr
  const int bpp = 4;
  gfxUtils::ConvertBGRAtoRGBA((uint8_t*)mBuffer.bits,
                              mBuffer.stride * mBuffer.height * bpp);
  ANativeWindow_unlockAndPost(mNativeWindow);
}

EGLNativeWindowType AndroidCompositorWidget::GetEGLNativeWindow() {
  return (EGLNativeWindowType)mWidget->GetNativeData(NS_JAVA_SURFACE);
}

EGLNativeWindowType AndroidCompositorWidget::GetPresentationEGLSurface() {
  return (EGLNativeWindowType)mWidget->GetNativeData(NS_PRESENTATION_SURFACE);
}

void AndroidCompositorWidget::SetPresentationEGLSurface(EGLSurface aVal) {
  mWidget->SetNativeData(NS_PRESENTATION_SURFACE, (uintptr_t)aVal);
}

ANativeWindow* AndroidCompositorWidget::GetPresentationANativeWindow() {
  return (ANativeWindow*)mWidget->GetNativeData(NS_PRESENTATION_WINDOW);
}

}  // namespace widget
}  // namespace mozilla