1 files changed, 28 insertions, 0 deletions
diff --git a/libhwc2.1/histogram_mediator.h b/libhwc2.1/histogram_mediator.h
index fa81e0b..54d28c9 100644
--- a/libhwc2.1/histogram_mediator.h
+++ b/libhwc2.1/histogram_mediator.h
@@ -73,10 +73,38 @@ public:
         bool mHistReq_pending = false;
         std::mutex mDataCollectingMutex; // for data collecting operations
     };
+
+    struct HistogramConfig {
+        RoiRect mRoi;
+        Weight mWeights;
+        HistogramPos mPos;
+
+        HistogramConfig() {}
+
+        HistogramConfig(const RoiRect &roi, const Weight &weights, const HistogramPos &pos) {
+            mRoi = roi;
+            mWeights = weights;
+            mPos = pos;
+        }
+
+        bool operator!=(const HistogramConfig &rhs) {
+            return mRoi != rhs.mRoi || mWeights != rhs.mWeights || mPos != rhs.mPos;
+        }
+
+        HistogramConfig &operator=(const HistogramConfig &rhs) {
+            mRoi = rhs.mRoi;
+            mWeights = rhs.mWeights;
+            mPos = rhs.mPos;
+            return *this;
+        }
+    };
+
     uint32_t getFrameCount();
     void setSampleFrameCounter(int32_t id) { mSampledFrameCounter = id; }
     uint32_t getSampleFrameCounter() { return mSampledFrameCounter; }
     bool histRequested() { return mIDLHistogram->mHistReq_pending; }
+    std::mutex mConfigMutex;
+    HistogramConfig mConfig GUARDED_BY(mConfigMutex);
 
 private:
     int calculateThreshold(const RoiRect &roi);