commit 95f669a30a74fa519dc9dc760a099d977ebee567
author Sally Qi <sallyqi@google.com> Tue Aug 27 11:31:42 2024 -0700
committer Sally Qi <sallyqi@google.com> Thu Oct 03 22:14:32 2024 -0700
tree 515ab432d63d7c2177b1b4dc0c60427d8fdc3943
parent 9a4c026c402afc2f49856ca6d01f8c6d50a9a56f

[Lut HAL backend] implementation

- Add Lut in HWComposer::DeviceRequestedChanges
- parse lutProperties into overlayProperties
- Add a mapper <layer*, pfd> to store lut fd to avoid dup() ops if
  passing the fds into callees.
- SurfaceComposerClient::Transaction::setLuts interface

Bug: 329472100
Test: builds
Flag: NONE HAL backend interface change
Change-Id: Ib2993ce1eab66ab456388c0d15b032201eac7e91

services/surfaceflinger/SurfaceFlinger.cpp

diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 4bfbde5..a50c344 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -1648,6 +1648,22 @@
         outProperties->combinations.emplace_back(outCombination);
     }
     outProperties->supportMixedColorSpaces = aidlProperties.supportMixedColorSpaces;
+    if (aidlProperties.lutProperties.has_value()) {
+        std::vector<gui::LutProperties> outLutProperties;
+        for (const auto& properties : aidlProperties.lutProperties.value()) {
+            gui::LutProperties currentProperties;
+            currentProperties.dimension =
+                    static_cast<gui::LutProperties::Dimension>(properties->dimension);
+            currentProperties.size = properties->size;
+            currentProperties.samplingKeys.reserve(properties->samplingKeys.size());
+            std::transform(properties->samplingKeys.cbegin(), properties->samplingKeys.cend(),
+                           std::back_inserter(currentProperties.samplingKeys), [](const auto& val) {
+                               return static_cast<gui::LutProperties::SamplingKey>(val);
+                           });
+            outLutProperties.push_back(std::move(currentProperties));
+        }
+        outProperties->lutProperties.emplace(outLutProperties.begin(), outLutProperties.end());
+    }
     return NO_ERROR;
 }