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>

utils/LibdisplayEdidWrapper.cpp

diff --git a/utils/LibdisplayEdidWrapper.cpp b/utils/LibdisplayEdidWrapper.cpp
index 5a17b93..d2d2a1c 100644
--- a/utils/LibdisplayEdidWrapper.cpp
+++ b/utils/LibdisplayEdidWrapper.cpp
@@ -17,6 +17,7 @@
 #define LOG_TAG "drmhwc"
 
 #if HAS_LIBDISPLAY_INFO
+
 #include "utils/EdidWrapper.h"
 #include "utils/log.h"
 
@@ -63,5 +64,36 @@
   min_luminance = &hdr_static_meta->desired_content_min_luminance;
 }
 
+void LibdisplayEdidWrapper::GetColorModes(std::vector<Colormode> &color_modes) {
+  color_modes.clear();
+  color_modes.emplace_back(Colormode::kNative);
+
+  const auto *hdr_static_meta = di_info_get_hdr_static_metadata(info_);
+  const auto *colorimetries = di_info_get_supported_signal_colorimetry(info_);
+
+  /* Rec. ITU-R BT.2020 constant luminance YCbCr */
+  /* Rec. ITU-R BT.2020 non-constant luminance YCbCr */
+  if (colorimetries->bt2020_cycc || colorimetries->bt2020_ycc)
+    color_modes.emplace_back(Colormode::kBt2020);
+
+  /* Rec. ITU-R BT.2020 RGB */
+  if (colorimetries->bt2020_rgb)
+    color_modes.emplace_back(Colormode::kDisplayBt2020);
+
+  /* SMPTE ST 2113 RGB: P3D65 and P3DCI */
+  if (colorimetries->st2113_rgb) {
+    color_modes.emplace_back(Colormode::kDciP3);
+    color_modes.emplace_back(Colormode::kDisplayP3);
+  }
+
+  /* Rec. ITU-R BT.2100 ICtCp HDR (with PQ and/or HLG) */
+  if (colorimetries->ictcp) {
+    if (hdr_static_meta->pq)
+      color_modes.emplace_back(Colormode::kBt2100Pq);
+    if (hdr_static_meta->hlg)
+      color_modes.emplace_back(Colormode::kBt2100Hlg);
+  }
+}
+
 }  // namespace android
 #endif