diff --git a/mpp/hal/rkdec/inc/vdpu34x_com.h b/mpp/hal/rkdec/inc/vdpu34x_com.h
index d9571e55..76ed4741 100644
--- a/mpp/hal/rkdec/inc/vdpu34x_com.h
+++ b/mpp/hal/rkdec/inc/vdpu34x_com.h
@@ -29,16 +29,16 @@
 #define RCB_BUF_COUNT               (10)
 #define RCB_ALLINE_SIZE             (64)
 
-#define RCB_INTRAR_COEF             (6)
-#define RCB_TRANSDR_COEF            (1)
-#define RCB_TRANSDC_COEF            (1)
-#define RCB_STRMDR_COEF             (6)
-#define RCB_INTERR_COEF             (6)
-#define RCB_INTERC_COEF             (3)
-#define RCB_DBLKR_COEF              (22)
-#define RCB_SAOR_COEF               (6)
-#define RCB_FBCR_COEF               (11)
-#define RCB_FILTC_COEF              (67)
+#define RCB_INTRA_ROW_COEF          (6)
+#define RCB_TRANSD_ROW_COEF         (1)
+#define RCB_TRANSD_COL_COEF         (1)
+#define RCB_STRMD_ROW_COEF          (3)
+#define RCB_INTER_ROW_COEF          (6)
+#define RCB_INTER_COL_COEF          (3)
+#define RCB_DBLK_ROW_COEF           (22)
+#define RCB_SAO_ROW_COEF            (6)
+#define RCB_FBC_ROW_COEF            (11)
+#define RCB_FILT_COL_COEF           (67)
 
 /* base: OFFSET_COMMON_REGS */
 typedef struct Vdpu34xRegCommon_t {
diff --git a/mpp/hal/rkdec/vdpu34x_com.c b/mpp/hal/rkdec/vdpu34x_com.c
index eaaf39a6..8759c956 100644
--- a/mpp/hal/rkdec/vdpu34x_com.c
+++ b/mpp/hal/rkdec/vdpu34x_com.c
@@ -35,34 +35,34 @@ RK_S32 get_rcb_buf_size(RK_S32 *sizes, RK_S32 *offsets, RK_S32 width, RK_S32 hei
 
     mpp_assert(sizes);
 
-    buf_size = MPP_ALIGN(width * RCB_INTRAR_COEF, align);
+    buf_size = MPP_ALIGN(width * RCB_INTRA_ROW_COEF, align);
     UPDATE_SIZE_OFFSET(sizes, offsets, offset, buf_size);
 
-    buf_size = MPP_ALIGN(width * RCB_TRANSDR_COEF, align);
+    buf_size = MPP_ALIGN(width * RCB_TRANSD_ROW_COEF, align);
     UPDATE_SIZE_OFFSET(sizes, offsets, offset, buf_size);
 
-    buf_size = MPP_ALIGN(height * RCB_TRANSDC_COEF, align);
+    buf_size = MPP_ALIGN(height * RCB_TRANSD_COL_COEF, align);
     UPDATE_SIZE_OFFSET(sizes, offsets, offset, buf_size);
 
-    buf_size = MPP_ALIGN(width * RCB_STRMDR_COEF, align);
+    buf_size = MPP_ALIGN(width * RCB_STRMD_ROW_COEF, align);
     UPDATE_SIZE_OFFSET(sizes, offsets, offset, buf_size);
 
-    buf_size = MPP_ALIGN(width * RCB_INTERR_COEF, align);
+    buf_size = MPP_ALIGN(width * RCB_INTER_ROW_COEF, align);
     UPDATE_SIZE_OFFSET(sizes, offsets, offset, buf_size);
 
-    buf_size = MPP_ALIGN(height * RCB_INTERC_COEF, align);
+    buf_size = MPP_ALIGN(height * RCB_INTER_COL_COEF, align);
     UPDATE_SIZE_OFFSET(sizes, offsets, offset, buf_size);
 
-    buf_size = MPP_ALIGN(width * RCB_DBLKR_COEF, align);
+    buf_size = MPP_ALIGN(width * RCB_DBLK_ROW_COEF, align);
     UPDATE_SIZE_OFFSET(sizes, offsets, offset, buf_size);
 
-    buf_size = MPP_ALIGN(width * RCB_SAOR_COEF, align);
+    buf_size = MPP_ALIGN(width * RCB_SAO_ROW_COEF, align);
     UPDATE_SIZE_OFFSET(sizes, offsets, offset, buf_size);
 
-    buf_size = MPP_ALIGN(width * RCB_FBCR_COEF, align);
+    buf_size = MPP_ALIGN(width * RCB_FBC_ROW_COEF, align);
     UPDATE_SIZE_OFFSET(sizes, offsets, offset, buf_size);
 
-    buf_size = MPP_ALIGN(height * RCB_FILTC_COEF, align);
+    buf_size = MPP_ALIGN(height * RCB_FILT_COL_COEF, align);
     UPDATE_SIZE_OFFSET(sizes, offsets, offset, buf_size);
 
     return offset;