diff --git a/src/ir_decoder/CMakeLists.txt b/src/ir_decoder/CMakeLists.txt
index b195e9a..552a868 100644
--- a/src/ir_decoder/CMakeLists.txt
+++ b/src/ir_decoder/CMakeLists.txt
@@ -89,6 +89,6 @@ set(SOURCE_FILES_JNI_SHARED_LIB
         src/ir_decode.c
         include/ir_decode.h)
 
-add_library(irda_decoder SHARED ${SOURCE_FILES_SHARED_LIB})
-# add_executable(irda_decoder ${SOURCE_FILES_EXECUTABLE})
+# add_library(irda_decoder SHARED ${SOURCE_FILES_SHARED_LIB})
+add_executable(irda_decoder ${SOURCE_FILES_EXECUTABLE})
 # add_library(irda_decoder SHARED ${SOURCE_FILES_JNI_SHARED_LIB})
diff --git a/src/ir_decoder/include/ir_decode.h b/src/ir_decoder/include/ir_decode.h
index 7e88ee2..496de38 100644
--- a/src/ir_decoder/include/ir_decode.h
+++ b/src/ir_decoder/include/ir_decode.h
@@ -34,10 +34,6 @@ extern "C"
 #define SUB_CATEGORY_QUATERNARY      0
 #define SUB_CATEGORY_HEXADECIMAL     1
 
-// update 2017-11-07: for backward compatibility purpose
-#define ir_decode(key_code, user_data, ac_status, change_wind_direction) \
-        ir_decode_f(key_code, user_data, ac_status, change_wind_direction, 0)
-
 // exported functions
 /**
  * function     ir_file_open
@@ -76,12 +72,24 @@ extern INT8 ir_binary_open(const UINT8 category, const UINT8 sub_category, UINT8
  *              user_data (out) - output decoded data in INT16 array format
  *              ac_status(in) - pointer to AC status (optional)
  *              change_wind_direction (in) - if control changes wind direction for AC (for AC only)
- *              output_format - 0x00 for analog signal output, 0x01 for digital signal output, default is 0x00
  *
  * returns:     length of decoded data (0 indicates decode failure)
  */
-extern UINT16 ir_decode_f(UINT8 key_code, UINT16* user_data, t_remote_ac_status* ac_status, BOOL change_wind_direction,
-                        UINT8 output_format);
+extern UINT16 ir_decode(UINT8 key_code, UINT16* user_data, t_remote_ac_status* ac_status, BOOL change_wind_direction);
+
+/**
+ * function     ir_decode_d
+ *
+ * description: decode IR binary into digital NEC code
+ *
+ * parameters:  key_code (in) - the code of pressed key
+ *              user_data (out) - output decoded data in INT16 array format
+ *              ac_status(in) - pointer to AC status (optional)
+ *              change_wind_direction (in) - if control changes wind direction for AC (for AC only)
+ *
+ * returns:     length of decoded data (0 indicates decode failure)
+ */
+extern UINT16 ir_decode_d(UINT8 key_code, UINT16* user_data, t_remote_ac_status* ac_status, BOOL change_wind_direction);
 
 /**
  * function     ir_close
diff --git a/src/ir_decoder/src/ir_decode.c b/src/ir_decoder/src/ir_decode.c
index 8c45eae..f2b8cdd 100644
--- a/src/ir_decoder/src/ir_decode.c
+++ b/src/ir_decoder/src/ir_decode.c
@@ -159,8 +159,7 @@ INT8 ir_binary_open(const UINT8 category, const UINT8 sub_category, UINT8* binar
 }
 
 
-UINT16 ir_decode_f(UINT8 key_code, UINT16* user_data, t_remote_ac_status* ac_status, BOOL change_wind_direction,
-                   UINT8 output_format)
+UINT16 ir_decode(UINT8 key_code, UINT16* user_data, t_remote_ac_status* ac_status, BOOL change_wind_direction)
 {
     if (IR_TYPE_COMMANDS == ir_binary_type)
     {