diff --git a/library/src/main/ets/downsampling/BaseDownsampling.ets b/library/src/main/ets/downsampling/BaseDownsampling.ets
index 5b49b68..28f34da 100644
--- a/library/src/main/ets/downsampling/BaseDownsampling.ets
+++ b/library/src/main/ets/downsampling/BaseDownsampling.ets
@@ -20,7 +20,7 @@ export interface BaseDownsampling {
   getName(): string
 
   getScaleFactor(sourceWidth: number, sourceHeight: number, requestWidth: number, requestHeight: number,downsampType?:DownsampleStrategy): number
-
-  getSampleSizeRounding(sourceWidth: number, sourceHeight: number, requestWidth: number,
+  //
+  getSampleSizeType(sourceWidth: number, sourceHeight: number, requestWidth: number,
     requestHeight: number,downsampType?:DownsampleStrategy): SampleSizeRounding
 }
\ No newline at end of file