diff --git a/rs_hal.h b/rs_hal.h
index 1e222e1..e48aa16 100644
--- a/rs_hal.h
+++ b/rs_hal.h
@@ -19,6 +19,8 @@
 
 #include <RenderScriptDefines.h>
 
+struct ANativeWindow;
+
 namespace android {
 namespace renderscript {
 
@@ -115,7 +117,11 @@
                        bool zeroNew);
         void (*syncAll)(const Context *rsc, const Allocation *alloc, RsAllocationUsageType src);
         void (*markDirty)(const Context *rsc, const Allocation *alloc);
+
         int32_t (*initSurfaceTexture)(const Context *rsc, const Allocation *alloc);
+        void (*setSurfaceTexture)(const Context *rsc, Allocation *alloc, ANativeWindow *sur);
+        void (*ioSend)(const Context *rsc, Allocation *alloc);
+        void (*ioReceive)(const Context *rsc, Allocation *alloc);
 
         void (*data1D)(const Context *rsc, const Allocation *alloc,
                        uint32_t xoff, uint32_t lod, uint32_t count,