libhwc2.1: add roi calculation for display RRS

This patch calculates roi for histogram sampling
accoring to display RRS mode setups

Bug: 233136164

Test: local test with a hist_client code by setting
different display resolution switch

Change-Id: I35aab6b776b1687c8ae1d37ca439a9409205932c

1 files changed, 16 insertions, 0 deletions

diff --git a/libhwc2.1/histogram_mediator.cpp b/libhwc2.1/histogram_mediator.cpp
index e7ee305..204c350 100644
--- a/libhwc2.1/histogram_mediator.cpp
+++ b/libhwc2.1/histogram_mediator.cpp
@@ -21,6 +21,7 @@ histogram::HistogramMediator::HistogramMediator(ExynosDisplay *display) {
             static_cast<ExynosDisplayDrmInterface *>(display->mDisplayInterface.get());
 
     moduleDisplayInterface->registerHistogramInfo(static_cast<IDLHistogram *>(&mIDLHistogram));
+    moduleDisplayInterface->getPanelResolution();
 }
 uint32_t histogram::HistogramMediator::getFrameCount() {
     ExynosDisplayDrmInterface *moduleDisplayInterface =
@@ -110,3 +111,18 @@ histogram::HistogramErrorCode histogram::HistogramMediator::collectRoiLuma(
 
     return histogram::HistogramErrorCode::NONE;
 }
+
+histogram::RoiRect histogram::HistogramMediator::calRoi(RoiRect roi) {
+    RoiRect roi_return = {-1, -1, -1, -1};
+    ExynosDisplayDrmInterface *moduleDisplayInterface =
+            static_cast<ExynosDisplayDrmInterface *>(mDisplay->mDisplayInterface.get());
+    roi_return.left = roi.left * moduleDisplayInterface->getActiveModeHDisplay() /
+            moduleDisplayInterface->panelHsize();
+    roi_return.top = roi.top * moduleDisplayInterface->getActiveModeVDisplay() /
+            moduleDisplayInterface->panelVsize();
+    roi_return.right = roi.right * moduleDisplayInterface->getActiveModeHDisplay() /
+            moduleDisplayInterface->panelHsize();
+    roi_return.bottom = roi.bottom * moduleDisplayInterface->getActiveModeVDisplay() /
+            moduleDisplayInterface->panelVsize();
+    return roi_return;
+}