diff --git a/libs/gui/LayerState.cpp b/libs/gui/LayerState.cpp
index 38fab9c..9d7d304 100644
--- a/libs/gui/LayerState.cpp
+++ b/libs/gui/LayerState.cpp
@@ -605,6 +605,10 @@
         desiredHdrSdrRatio = other.desiredHdrSdrRatio;
         currentHdrSdrRatio = other.currentHdrSdrRatio;
     }
+    if (other.what & eDesiredHdrHeadroomChanged) {
+        what |= eDesiredHdrHeadroomChanged;
+        desiredHdrSdrRatio = other.desiredHdrSdrRatio;
+    }
     if (other.what & eCachingHintChanged) {
         what |= eCachingHintChanged;
         cachingHint = other.cachingHint;
@@ -768,6 +772,7 @@
     CHECK_DIFF(diff, eDataspaceChanged, other, dataspace);
     CHECK_DIFF2(diff, eExtendedRangeBrightnessChanged, other, currentHdrSdrRatio,
                 desiredHdrSdrRatio);
+    CHECK_DIFF(diff, eDesiredHdrHeadroomChanged, other, desiredHdrSdrRatio);
     CHECK_DIFF(diff, eCachingHintChanged, other, cachingHint);
     CHECK_DIFF(diff, eHdrMetadataChanged, other, hdrMetadata);
     if (other.what & eSurfaceDamageRegionChanged &&
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 8d18551..3a02c64 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -1807,6 +1807,20 @@
     return *this;
 }
 
+SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setDesiredHdrHeadroom(
+        const sp<SurfaceControl>& sc, float desiredRatio) {
+    layer_state_t* s = getLayerState(sc);
+    if (!s) {
+        mStatus = BAD_INDEX;
+        return *this;
+    }
+    s->what |= layer_state_t::eDesiredHdrHeadroomChanged;
+    s->desiredHdrSdrRatio = desiredRatio;
+
+    registerSurfaceControlForCallback(sc);
+    return *this;
+}
+
 SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setCachingHint(
         const sp<SurfaceControl>& sc, gui::CachingHint cachingHint) {
     layer_state_t* s = getLayerState(sc);
diff --git a/libs/gui/include/gui/LayerState.h b/libs/gui/include/gui/LayerState.h
index 6b8e824..9350c95 100644
--- a/libs/gui/include/gui/LayerState.h
+++ b/libs/gui/include/gui/LayerState.h
@@ -206,7 +206,7 @@
         eBackgroundBlurRadiusChanged = 0x80'00000000,
         eProducerDisconnect = 0x100'00000000,
         eFixedTransformHintChanged = 0x200'00000000,
-        /* unused 0x400'00000000, */
+        eDesiredHdrHeadroomChanged = 0x400'00000000,
         eBlurRegionsChanged = 0x800'00000000,
         eAutoRefreshChanged = 0x1000'00000000,
         eStretchChanged = 0x2000'00000000,
@@ -245,7 +245,8 @@
             layer_state_t::eSidebandStreamChanged | layer_state_t::eSurfaceDamageRegionChanged |
             layer_state_t::eTransformToDisplayInverseChanged |
             layer_state_t::eTransparentRegionChanged |
-            layer_state_t::eExtendedRangeBrightnessChanged;
+            layer_state_t::eExtendedRangeBrightnessChanged |
+            layer_state_t::eDesiredHdrHeadroomChanged;
 
     // Content updates.
     static constexpr uint64_t CONTENT_CHANGES = layer_state_t::BUFFER_CHANGES |
diff --git a/libs/gui/include/gui/SurfaceComposerClient.h b/libs/gui/include/gui/SurfaceComposerClient.h
index 14e3dd5..7118883 100644
--- a/libs/gui/include/gui/SurfaceComposerClient.h
+++ b/libs/gui/include/gui/SurfaceComposerClient.h
@@ -594,6 +594,7 @@
         Transaction& setDataspace(const sp<SurfaceControl>& sc, ui::Dataspace dataspace);
         Transaction& setExtendedRangeBrightness(const sp<SurfaceControl>& sc,
                                                 float currentBufferRatio, float desiredRatio);
+        Transaction& setDesiredHdrHeadroom(const sp<SurfaceControl>& sc, float desiredRatio);
         Transaction& setCachingHint(const sp<SurfaceControl>& sc, gui::CachingHint cachingHint);
         Transaction& setHdrMetadata(const sp<SurfaceControl>& sc, const HdrMetadata& hdrMetadata);
         Transaction& setSurfaceDamageRegion(const sp<SurfaceControl>& sc,