diff --git a/system/vulkan_enc/AndroidHardwareBuffer.h b/system/vulkan_enc/AndroidHardwareBuffer.h
index fc6a27e..81e8cd9 100644
--- a/system/vulkan_enc/AndroidHardwareBuffer.h
+++ b/system/vulkan_enc/AndroidHardwareBuffer.h
@@ -24,6 +24,11 @@
 
 namespace goldfish_vk {
 
+uint64_t
+getAndroidHardwareBufferUsageFromVkUsage(
+    const VkImageCreateFlags vk_create,
+    const VkImageUsageFlags vk_usage);
+
 VkResult getAndroidHardwareBufferPropertiesANDROID(
     const HostVisibleMemoryVirtualizationInfo* hostMemVirtInfo,
     VkDevice device,
@@ -49,4 +54,4 @@
     VkDeviceSize allocationInfoAllocSize,
     struct AHardwareBuffer **out);
 
-} // namespace goldfish_vk
\ No newline at end of file
+} // namespace goldfish_vk