diff --git a/common/rfb/IrixDMIC_RawToJpeg.h b/common/rfb/IrixDMIC_RawToJpeg.h
index 33674bd..b067e13 100644
--- a/common/rfb/IrixDMIC_RawToJpeg.h
+++ b/common/rfb/IrixDMIC_RawToJpeg.h
@@ -28,6 +28,8 @@
 
     static bool allocBuffer(DMbuffer *pbuf, DMbufferpool pool);
     static bool copyToBuffer(DMbuffer buf, const void *data, int dataSize);
+    static bool copyToBuffer(DMbuffer buf, const void *data,
+                             int rowSize, int nRows, int stride);
     static int getBufferSize(DMbuffer buf);
     static void * mapBufferData(DMbuffer buf);
     static void freeBuffer(DMbuffer buf);