commit 851ea4dc268c4da612c65a5dfedbd3ed85960405
author Sasha McIntosh <sashamcintosh@google.com> Wed Dec 04 17:14:55 2024 -0500
committer Sasha McIntosh <sashamcintosh@google.com> Fri Jan 31 13:21:15 2025 -0500
tree 0558adfed08ada32edd545b84ad65e7cae95758d
parent f9062b696444f35c4385d207e6cafbb99ed8828f

drm_hwcomposer: Implement getHdrCapabilities and getColorModes

Retrieve color and HDR information from the EDID.

Change-Id: I1aac27644d5c4fd5d5f295ca32b69ed69e94e0c6
Signed-off-by: Sasha McIntosh <sashamcintosh@google.com>

hwc3/ComposerClient.cpp

diff --git a/hwc3/ComposerClient.cpp b/hwc3/ComposerClient.cpp
index 04beb3a..ff3d42e 100644
--- a/hwc3/ComposerClient.cpp
+++ b/hwc3/ComposerClient.cpp
@@ -941,8 +941,28 @@
     return ToBinderStatus(hwc3::Error::kBadDisplay);
   }
 
-  /* No HDR capabilities */
-  caps->types.clear();
+  uint32_t num_types = 0;
+  hwc3::Error error = Hwc2toHwc3Error(
+      display->GetHdrCapabilities(&num_types, nullptr, nullptr, nullptr,
+                                  nullptr));
+  if (error != hwc3::Error::kNone) {
+    return ToBinderStatus(error);
+  }
+
+  std::vector<int32_t> out_types(num_types);
+  error = Hwc2toHwc3Error(
+      display->GetHdrCapabilities(&num_types, out_types.data(),
+                                  &caps->maxLuminance,
+                                  &caps->maxAverageLuminance,
+                                  &caps->minLuminance));
+  if (error != hwc3::Error::kNone) {
+    return ToBinderStatus(error);
+  }
+
+  caps->types.reserve(num_types);
+  for (const auto type : out_types)
+    caps->types.emplace_back(Hwc2HdrTypeToHwc3(type));
+
   return ndk::ScopedAStatus::ok();
 }