diff --git a/hal_av_pipeline.c b/hal_av_pipeline.c
index 123d54e..fdaa2f6 100644
--- a/hal_av_pipeline.c
+++ b/hal_av_pipeline.c
@@ -39,6 +39,8 @@ synaptics_player_info gSocPlayerInfo[2];
 			
 pthread_t p_thread_decoder_statistics;
 pthread_mutex_t  thread_mutex = PTHREAD_MUTEX_INITIALIZER;
+pthread_mutex_t  main_mutex = PTHREAD_MUTEX_INITIALIZER;
+pthread_mutex_t  pip_mutex = PTHREAD_MUTEX_INITIALIZER;
 pthread_cond_t   thread_cond  = PTHREAD_COND_INITIALIZER;
 bool isDestroy = true;
 bool isStop = true;
@@ -250,7 +252,13 @@ int  AVP_Start(AVP_HANDLE player, AVP_PlayerConfig *config) {
     ALOGD("BTF|%s|%d|IN| player=%x, vcodec=%d, acodec=%d, pcr_pid=%d, video_pid=%d, audio_pid=%d \n", __FUNCTION__,__LINE__, player, config->video_codec, config->audio_codec, config->pcr_pid, config->video_pid, config->audio_pid);
 
     synaptics_player_info *socPlayerInfo = (synaptics_player_info *) player;
-    socPlayerInfo->playerConfig = *config;
+    socPlayerInfo->playerConfig = *config;
+
+    if( socPlayerInfo->pip ){
+        pthread_mutex_lock(&pip_mutex);
+    }else{
+        pthread_mutex_lock(&main_mutex);
+    }
 	
 	// check decoder error
 	socPlayerInfo->decoder_errors_num_adec = 0;
@@ -320,6 +328,13 @@ int  AVP_Start(AVP_HANDLE player, AVP_PlayerConfig *config) {
 	} else ALOGE("BTF|%s|%d|IN| load volume fail", __FUNCTION__,__LINE__);
 	
 	startCheckDecoderStatistics(player);
+
+    if( socPlayerInfo->pip ){
+        pthread_mutex_unlock(&pip_mutex);
+    }else{
+        pthread_mutex_unlock(&main_mutex);
+    }
+
 
     ALOGD("BTF|%s|%d|OUT| \n", __FUNCTION__,__LINE__);
 
@@ -332,6 +347,12 @@ int  AVP_Stop(AVP_HANDLE player) {
     CHECK_NULL_PLAYER(player);
 
     synaptics_player_info *socPlayerInfo = (synaptics_player_info *) player;
+
+    if( socPlayerInfo->pip ){
+        pthread_mutex_lock(&pip_mutex);
+    }else{
+        pthread_mutex_lock(&main_mutex);
+    }
 	
 	stopCheckDecoderStatistics();
 
@@ -359,7 +380,13 @@ int  AVP_Stop(AVP_HANDLE player) {
     if(logFp[socPlayerInfo->pip ? 1:0] != NULL)
         fclose(logFp[socPlayerInfo->pip ? 1:0]);
 #endif
-
+
+    if( socPlayerInfo->pip ){
+        pthread_mutex_unlock(&pip_mutex);
+    }else{
+        pthread_mutex_unlock(&main_mutex);
+    }
+
     ALOGD("BTF|%s|%d|OUT| \n", __FUNCTION__,__LINE__);
 
 	return 0;
@@ -454,6 +481,13 @@ int  AVP_FlushTS(AVP_HANDLE player) {
     ALOGD("BTF|%s|%d|IN| player=%x\n", __FUNCTION__,__LINE__, player);
 
     synaptics_player_info *socPlayerInfo = (synaptics_player_info *) player;
+
+    if( socPlayerInfo->pip ){
+        pthread_mutex_lock(&pip_mutex);
+    }else{
+        pthread_mutex_lock(&main_mutex);
+    }
+
     amp_stop_pipeline(player);
 
     amp_clear_port_buf(player);
@@ -463,7 +497,13 @@ int  AVP_FlushTS(AVP_HANDLE player) {
     amp_reset_buffer(socPlayerInfo);
 
     amp_start_pipeline(player);
-
+
+    if( socPlayerInfo->pip ){
+        pthread_mutex_unlock(&pip_mutex);
+    }else{
+        pthread_mutex_unlock(&main_mutex);
+    }
+
     ALOGD("BTF|%s|%d|OUT| \n", __FUNCTION__,__LINE__);
 
 	return 0;