diff --git a/test/mpi_dec_mt_test.c b/test/mpi_dec_mt_test.c
index 612294fe..04b685fc 100644
--- a/test/mpi_dec_mt_test.c
+++ b/test/mpi_dec_mt_test.c
@@ -242,7 +242,7 @@ void *thread_output(void *arg)
     return NULL;
 }
 
-int mpi_dec_test_decode(MpiDecTestCmd *cmd)
+int mt_dec_decode(MpiDecTestCmd *cmd)
 {
     MPP_RET ret         = MPP_OK;
     size_t file_size    = 0;
@@ -451,7 +451,7 @@ int main(int argc, char **argv)
 
     mpp_env_set_u32("mpi_debug", cmd->debug);
 
-    ret = mpi_dec_test_decode(cmd);
+    ret = mt_dec_decode(cmd);
     if (MPP_OK == ret)
         mpp_log("test success\n");
     else
diff --git a/test/mpi_dec_multi_test.c b/test/mpi_dec_multi_test.c
index c79ab21b..5e9eee2c 100644
--- a/test/mpi_dec_multi_test.c
+++ b/test/mpi_dec_multi_test.c
@@ -76,7 +76,7 @@ typedef struct {
     MpiDecCtxRet    ret;            // return of decoder
 } MpiDecCtxInfo;
 
-static int decode_simple(MpiDecCtx *data)
+static int multi_dec_simple(MpiDecCtx *data)
 {
     RK_U32 pkt_done = 0;
     RK_U32 pkt_eos  = 0;
@@ -249,7 +249,7 @@ static int decode_simple(MpiDecCtx *data)
     return ret;
 }
 
-static int decode_advanced(MpiDecCtx *data)
+static int multi_dec_advanced(MpiDecCtx *data)
 {
     RK_U32 pkt_eos  = 0;
     MPP_RET ret = MPP_OK;
@@ -346,7 +346,7 @@ static int decode_advanced(MpiDecCtx *data)
     return ret;
 }
 
-void* mpi_dec_test_decode(void *cmd_ctx)
+void* multi_dec_decode(void *cmd_ctx)
 {
     MpiDecCtxInfo *info = (MpiDecCtxInfo *)cmd_ctx;
     MpiDecTestCmd *cmd  = info->cmd;
@@ -516,11 +516,11 @@ void* mpi_dec_test_decode(void *cmd_ctx)
     t_s = mpp_time();
     if (cmd->simple) {
         while (!dec_ctx->eos) {
-            decode_simple(dec_ctx);
+            multi_dec_simple(dec_ctx);
         }
     } else {
         while (!dec_ctx->eos) {
-            decode_advanced(dec_ctx);
+            multi_dec_advanced(dec_ctx);
         }
     }
     t_e = mpp_time();
@@ -625,7 +625,7 @@ int main(int argc, char **argv)
     for (i = 0; i < cmd->nthreads; i++) {
         ctxs[i].cmd = cmd;
 
-        ret = pthread_create(&ctxs[i].thd, NULL, mpi_dec_test_decode, &ctxs[i]);
+        ret = pthread_create(&ctxs[i].thd, NULL, multi_dec_decode, &ctxs[i]);
         if (ret) {
             mpp_log("failed to create thread %d\n", i);
             return ret;
diff --git a/test/mpi_dec_test.c b/test/mpi_dec_test.c
index b8f4aa8c..7bd213d7 100644
--- a/test/mpi_dec_test.c
+++ b/test/mpi_dec_test.c
@@ -57,7 +57,7 @@ typedef struct {
     FileReader      reader;
 } MpiDecLoopData;
 
-static int decode_simple(MpiDecLoopData *data)
+static int dec_simple(MpiDecLoopData *data)
 {
     RK_U32 pkt_done = 0;
     RK_U32 pkt_eos  = 0;
@@ -359,7 +359,7 @@ static int decode_simple(MpiDecLoopData *data)
     return ret;
 }
 
-static int decode_advanced(MpiDecLoopData *data)
+static int dec_advanced(MpiDecLoopData *data)
 {
     RK_U32 pkt_eos  = 0;
     MPP_RET ret = MPP_OK;
@@ -459,7 +459,7 @@ static int decode_advanced(MpiDecLoopData *data)
     return ret;
 }
 
-int mpi_dec_test_decode(MpiDecTestCmd *cmd)
+int dec_decode(MpiDecTestCmd *cmd)
 {
     MPP_RET ret         = MPP_OK;
     size_t file_size    = 0;
@@ -633,7 +633,7 @@ int mpi_dec_test_decode(MpiDecTestCmd *cmd)
 
     if (cmd->simple) {
         while (!data.eos) {
-            decode_simple(&data);
+            dec_simple(&data);
         }
     } else {
         /* NOTE: change output format before jpeg decoding */
@@ -641,7 +641,7 @@ int mpi_dec_test_decode(MpiDecTestCmd *cmd)
             ret = mpi->control(ctx, MPP_DEC_SET_OUTPUT_FORMAT, &cmd->format);
 
         while (!data.eos) {
-            decode_advanced(&data);
+            dec_advanced(&data);
         }
     }
 
@@ -752,7 +752,7 @@ int main(int argc, char **argv)
 
     cmd->simple = (cmd->type != MPP_VIDEO_CodingMJPEG) ? (1) : (0);
 
-    ret = mpi_dec_test_decode(cmd);
+    ret = dec_decode(cmd);
     if (MPP_OK == ret)
         mpp_log("test success max memory %.2f MB\n", cmd->max_usage / (float)(1 << 20));
     else