diff --git a/src/decoder/dvpp/DvppStreamDecoder.cpp b/src/decoder/dvpp/DvppStreamDecoder.cpp
index 5b00f77..03ce395 100644
--- a/src/decoder/dvpp/DvppStreamDecoder.cpp
+++ b/src/decoder/dvpp/DvppStreamDecoder.cpp
@@ -67,13 +67,7 @@ bool DvppStreamDecoder::Init(FFDecConfig cfg) {
     m_deviceId = atoi(cfg.gpuid.c_str());
 
     do{
-        aclError ret = aclrtSetDevice(m_deviceId);
-        if(ret != ACL_ERROR_NONE){
-            LOG_ERROR("[{}]-aclrtSetDevice failed !", m_dec_name);
-            return false;
-        }
-
-        ret = aclrtCreateContext(&m_context, m_deviceId);
+        aclError ret = aclrtCreateContext(&m_context, m_deviceId);
         if (ret != ACL_ERROR_NONE) {
             LOG_ERROR("[{}]-aclrtCreateContext failed !", m_dec_name);
             return false;
@@ -138,15 +132,8 @@ int DvppStreamDecoder::getVdecType(int videoType)
 
 void DvppStreamDecoder::doProcessReport(){
 
-    aclError ret = aclrtSetDevice(m_deviceId);
-    if(ret != ACL_ERROR_NONE){
-        // cout << "aclrtSetDevice failed" << endl;
-        LOG_ERROR("aclrtSetDevice failed !");
-        return ;
-    }
-
     aclrtContext ctx;
-    ret = aclrtCreateContext(&ctx, m_deviceId);
+    aclError ret = aclrtCreateContext(&ctx, m_deviceId);
     if (ret != ACL_ERROR_NONE) {
         // cout << "aclrtCreateContext failed " << endl;
         LOG_ERROR("aclrtCreateContext failed !");
diff --git a/src/decoder/dvpp/VpcUtils.cpp b/src/decoder/dvpp/VpcUtils.cpp
index bb8e332..834cdc9 100644
--- a/src/decoder/dvpp/VpcUtils.cpp
+++ b/src/decoder/dvpp/VpcUtils.cpp
@@ -17,30 +17,23 @@ VpcUtils::VpcUtils(){
 }
 
 VpcUtils::~VpcUtils(){
-    if(context_){
-        aclrtDestroyContext(context_);
-    }
-
-    if (dvppChannelDesc_) {
-        (void)acldvppDestroyChannel(dvppChannelDesc_);
-        (void)acldvppDestroyChannelDesc(dvppChannelDesc_);
-        dvppChannelDesc_ = nullptr;
-    }
+    release();
 }
 
 int VpcUtils::init(int devId){
 
     m_devId = devId;
 
-    aclrtCreateContext(&context_, m_devId);
-
-    CHECK_AND_RETURN(aclrtSetCurrentContext(context_), "aclrtSetCurrentContext failed");
-
-    dvppChannelDesc_ = acldvppCreateChannelDesc();
+    aclError ret = aclrtCreateContext(&context_, m_devId);
+    if (ret != ACL_ERROR_NONE) {
+        LOG_ERROR("[{}]-aclrtCreateContext failed !", m_dec_name);
+        return false;
+    }
 
-    int ret = ACL_ERROR_NONE;
     do
     {
+        dvppChannelDesc_ = acldvppCreateChannelDesc();
+
         ret = acldvppCreateChannel(dvppChannelDesc_);
         CHECK_AND_BREAK(ret, "acldvppCreateChannel failed !");
 
@@ -51,6 +44,21 @@ int VpcUtils::init(int devId){
     return ret;
 }
 
+void VpcUtils::release() {
+    
+    if(context_){
+        aclrtSetCurrentContext(context_);
+    
+        if (dvppChannelDesc_) {
+            (void)acldvppDestroyChannel(dvppChannelDesc_);
+            (void)acldvppDestroyChannelDesc(dvppChannelDesc_);
+            dvppChannelDesc_ = nullptr;
+        }
+
+        aclrtDestroyContext(context_);
+    }
+}
+
 DvppDataMemory* VpcUtils::convert2bgr(acldvppPicDesc *inputDesc_, int out_width, int out_height, bool key_frame){
 
     aclrtSetCurrentContext(context_);
diff --git a/src/decoder/dvpp/VpcUtils.h b/src/decoder/dvpp/VpcUtils.h
index 2c5e781..e7a2e78 100644
--- a/src/decoder/dvpp/VpcUtils.h
+++ b/src/decoder/dvpp/VpcUtils.h
@@ -13,7 +13,8 @@ public:
     DvppDataMemory* convert2bgr(DvppDataMemory* inMem);
 
     DvppDataMemory* resize(acldvppPicDesc *inputDesc_, int out_width, int out_height);
-
+private:
+    void release();
 private:
     aclrtContext context_{nullptr};
     int m_devId;
diff --git a/src/decoder/interface/Makefile b/src/decoder/interface/Makefile
deleted file mode 100644
index a856501..0000000
--- a/src/decoder/interface/Makefile
+++ /dev/null
@@ -1,76 +0,0 @@
-# 各项目录
-LIB_DIR:=$(BUILD_DIR)/$(MODULE)/lib
-DEP_DIR:=$(BUILD_DIR)/$(MODULE)/.dep
-OBJ_DIR:=$(BUILD_DIR)/$(MODULE)/obj
-SRC_DIR:=$(TOP_DIR)/$(MODULE)
-
-# 源文件以及中间目标文件和依赖文件
-SRCS:=$(notdir $(wildcard $(SRC_DIR)/*.cpp))
-OBJS:=$(addprefix $(OBJ_DIR)/, $(patsubst %.cpp, %.o, $(SRCS)))
-DEPS:=$(addprefix $(DEP_DIR)/, $(patsubst %.cpp, %.d,a $(SRCS)))
-
-# 自动生成头文件依赖选项
-DEPFLAGS=-MT $@ -MMD -MP -MF $(DEP_DIR)/$*.d
-
-JRTP_ROOT = $(THIRDPARTY_ROOT)/jrtp_export
-
-INCLUDE= -I $(TOP_DIR)/common/inc \
-  -I $(TOP_DIR)/common/UtilNPP \
-  -I $(TOP_DIR)/ \
-  -I $(JRTP_ROOT)/jrtplib/include/jrtplib3 \
-  -I $(JRTP_ROOT)/jthread/include/jthread \
-  -I $(TOP_DIR)/src/gb28181 \
-  -I $(TOP_DIR)/src/nvdec \
-  -I $(CUDA_ROOT)/include \
-
-LIBSPATH= -L $(JRTP_ROOT)/jthread/lib -l:libjthread.a \
-   -L $(JRTP_ROOT)/jrtplib/lib -l:libjrtp.a \
-   -L $(CUDA_ROOT)/lib64 -lcuda -lcudart -lnvcuvid -lcurand -lcublas -lnvjpeg \
-
-
-CXXFLAGS= -g -O0 -fPIC $(INCLUDE) $(LIBSPATH) $(DEFS) -lpthread -lrt -lz -fexceptions -std=c++11 -fvisibility=hidden -Wl,-Bsymbolic -ldl -Wwrite-strings
-
-
-# 最终目标文件
-TARGET:=$(LIB_DIR)/$(MODULE).a
-
-
-# 默认最终目标
-.PHONY:all
-all:$(TARGET)
-
-# 生成最终目标
-$(TARGET):$(OBJS) | $(LIB_DIR)
-	@echo -e "\e[32m""Linking static library $(TARGET)""\e[0m"
-	@echo -e "ar -rc $@ $^"
-	@ar -rc $@ $^
-
-# 若没有lib目录则自动生成
-$(LIB_DIR):
-	@mkdir -p $@
-
-# 生成中间目标文件
-$(OBJ_DIR)/%.o:$(SRC_DIR)/%.cpp $(DEP_DIR)/%.d | $(OBJ_DIR) $(DEP_DIR)
-	@echo -e "\e[33m""Building object $@""\e[0m"
-	@echo -e "$(CXX) -c $(DEPFLAGS) $(CXXFLAGS) $(INCS) $(LIBS) $(MACROS) -o $@ $<"
-# @$(CXX) -c $(DEPFLAGS) $(CXXFLAGS) $(INCS) $(LIBSPATH) $(MACROS) -o $@  $(MODULE_LIBS) $<
-	@$(CXX) -c $(DEPFLAGS) $(CXXFLAGS) $(INCS) $(LIBS) $(MACROS) -o $@ $<
-
-# 若没有obj目录则自动生成
-$(OBJ_DIR):
-	@mkdir -p $@
-
-# 若没有.dep目录则自动生成
-$(DEP_DIR):
-	@mkdir -p $@
-
-# 依赖文件会在生成中间文件的时候自动生成，这里只是为了防止报错
-$(DEPS):
-
-# 引入中间目标文件头文件依赖关系
-include $(wildcard $(DEPS))
-
-# 直接删除组件build目录
-.PHONY:clean
-clean:
-	@rm -rf $(BUILD_DIR)/$(MODULE)
diff --git a/src/demo/demo.cpp b/src/demo/demo.cpp
index 022e4ad..9e535a6 100755
--- a/src/demo/demo.cpp
+++ b/src/demo/demo.cpp
@@ -1,5 +1,6 @@
 #include "../ai_platform/stl_aiplatform.h"
 #include <chrono>
+#include <thread>
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
@@ -1330,6 +1331,26 @@ init_mq_conn(handle);
   
 
 
+  int status = -1;
+	while (true)
+	{
+    status = get_task_status(handle,"34020000001320000207");
+    if (status == 0)
+    {
+      createTask_dvpp28181(handle, algor_vec, 4, false); 
+    }
+    
+    status = get_task_status(handle,"34020000001310000176");
+    if (status == 0)
+    {
+      createTask_dvpp28181(handle, algor_vec, 5, false); 
+    }
+
+		std::this_thread::sleep_for(std::chrono::seconds(5));
+	}
+
+
+
 char ch = 'a';
 while (ch != 'q') {
   ch = getchar();
@@ -1389,12 +1410,12 @@ int main(int argc, char *argv[]) {
     // int repeat_num = atoi(argv[3]);
     // int gpuID = atoi(argv[4]);
 
-    test_gpu(0);
+    // test_gpu(0);
     // test_gpu(1);
     // test_gpu(2);
     // test_gpu(3);
 
-    // test_dvpp28181(0);
+    test_dvpp28181(0);
 
     printf("Done.\n");