CaptureLayers: Avoid promoting parent on binder thread
We promote the parent of the root layer when we call getLayerStack.
Since we don't hold an IBinder to the root layers parent, just to
the layer itself, this could create a situation where we are the last
reference to the layer. Layers have to be destroyed on the main
thread and so that would be invalid. Hopefully this is the last
case and now we can start getting rid of refbase for layer.
Bug: 220176775
Bug: 223069308
Bug: 223081111
Test: Existing tests pass
Change-Id: I37a0834ddac6d8e84170674aba0c49268d65fa11
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 425b78b..268036c 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -6499,19 +6499,6 @@
// and failed if display is not in native mode. This provide a way to force using native
// colors when capture.
dataspace = args.dataspace;
- if (dataspace == ui::Dataspace::UNKNOWN) {
- auto display = findDisplay([layerStack = parent->getLayerStack()](const auto& display) {
- return display.getLayerStack() == layerStack;
- });
- if (!display) {
- // If the layer is not on a display, use the dataspace for the default display.
- display = getDefaultDisplayDeviceLocked();
- }
-
- const ui::ColorMode colorMode = display->getCompositionDisplay()->getState().colorMode;
- dataspace = pickDataspaceFromColorMode(colorMode);
- }
-
} // mStateLock
// really small crop or frameScale
@@ -6640,7 +6627,7 @@
renderArea->render([&] {
renderEngineResultFuture =
- renderScreenImplLocked(*renderArea, traverseLayers, buffer,
+ renderScreenImpl(*renderArea, traverseLayers, buffer,
canCaptureBlackoutContent, regionSampling, grayscale,
captureResults);
});
@@ -6673,7 +6660,7 @@
}
}
-std::shared_future<renderengine::RenderEngineResult> SurfaceFlinger::renderScreenImplLocked(
+std::shared_future<renderengine::RenderEngineResult> SurfaceFlinger::renderScreenImpl(
const RenderArea& renderArea, TraverseLayersFunction traverseLayers,
const std::shared_ptr<renderengine::ExternalTexture>& buffer,
bool canCaptureBlackoutContent, bool regionSampling, bool grayscale,
@@ -6697,7 +6684,22 @@
}
captureResults.buffer = buffer->getBuffer();
- captureResults.capturedDataspace = renderArea.getReqDataSpace();
+ auto dataspace = renderArea.getReqDataSpace();
+ auto parent = renderArea.getParentLayer();
+ if ((dataspace == ui::Dataspace::UNKNOWN) && (parent != nullptr)) {
+ Mutex::Autolock lock(mStateLock);
+ auto display = findDisplay([layerStack = parent->getLayerStack()](const auto& display) {
+ return display.getLayerStack() == layerStack;
+ });
+ if (!display) {
+ // If the layer is not on a display, use the dataspace for the default display.
+ display = getDefaultDisplayDeviceLocked();
+ }
+
+ const ui::ColorMode colorMode = display->getCompositionDisplay()->getState().colorMode;
+ dataspace = pickDataspaceFromColorMode(colorMode);
+ }
+ captureResults.capturedDataspace = dataspace;
const auto reqWidth = renderArea.getReqWidth();
const auto reqHeight = renderArea.getReqHeight();
@@ -6715,7 +6717,7 @@
clientCompositionDisplay.clip = sourceCrop;
clientCompositionDisplay.orientation = rotation;
- clientCompositionDisplay.outputDataspace = renderArea.getReqDataSpace();
+ clientCompositionDisplay.outputDataspace = dataspace;
clientCompositionDisplay.maxLuminance = DisplayDevice::sDefaultMaxLumiance;
const float colorSaturation = grayscale ? 0 : 1;