diff --git a/mpp/codec/dec/h265/h265d_refs.c b/mpp/codec/dec/h265/h265d_refs.c
index 465ccd36..c4f0b7f7 100644
--- a/mpp/codec/dec/h265/h265d_refs.c
+++ b/mpp/codec/dec/h265/h265d_refs.c
@@ -94,7 +94,7 @@ static HEVCFrame *alloc_frame(HEVCContext *s)
 
         mpp_frame_set_hor_stride(frame->frame, s->h265dctx->coded_width);
         mpp_frame_set_ver_stride(frame->frame, s->h265dctx->coded_height);
-        h265d_dbg(H265D_DBG_GLOBAL,"w_stride %d h_stride %d\n", s->h265dctx->coded_width, s->h265dctx->coded_height);
+        h265d_dbg(H265D_DBG_GLOBAL, "w_stride %d h_stride %d\n", s->h265dctx->coded_width, s->h265dctx->coded_height);
 
         // frame->frame->color_type              = s->h265dctx->pix_fmt;
         //  if (!frame->frame->sample_aspect_ratio.num)
diff --git a/mpp/legacy/vpu_mem_legacy.c b/mpp/legacy/vpu_mem_legacy.c
index d20615e4..405d7d41 100644
--- a/mpp/legacy/vpu_mem_legacy.c
+++ b/mpp/legacy/vpu_mem_legacy.c
@@ -95,8 +95,6 @@ static RK_S32 get_free_memory_num(vpu_display_mem_pool *p)
 
 static RK_S32 reset_vpu_mem_pool(vpu_display_mem_pool *p)
 {
-
-   
     vpu_display_mem_pool_impl *p_mempool = (vpu_display_mem_pool_impl *)p;
     mpp_buffer_group_clear(p_mempool->group);
     return 0;
@@ -263,7 +261,6 @@ RK_S32 VPUMemGetFD(VPUMemLinear_t *p)
     MppBuffer buffer = (MppBuffer)p->offset;
     fd = mpp_buffer_get_fd(buffer);
     return fd;
-
 }
 
 RK_S32 vpu_mem_judge_used_heaps_type()
diff --git a/mpp/mpp_buffer_impl.cpp b/mpp/mpp_buffer_impl.cpp
index ed986695..5db54d08 100644
--- a/mpp/mpp_buffer_impl.cpp
+++ b/mpp/mpp_buffer_impl.cpp
@@ -92,7 +92,7 @@ MPP_RET deinit_buffer_no_lock(MppBufferImpl *buffer)
         func(group->allocator, &buffer->info);
         group->usage -= buffer->info.size;
         group->count--;
-        if(!buffer->discard)
+        if (!buffer->discard)
             group->count_unused--;
     } else {
         group = SEARCH_GROUP_ORPHAN(buffer->group_id);
@@ -225,11 +225,11 @@ MPP_RET mpp_buffer_ref_dec(MppBufferImpl *buffer)
             if (group == service.mLegacyGroup) {
                 deinit_buffer_no_lock(buffer);
             } else {
-                if(buffer->discard){
+                if (buffer->discard) {
                     deinit_buffer_no_lock(buffer);
-                }else{
-                list_add_tail(&buffer->list_status, &group->list_unused);
-                group->count_unused++;
+                } else {
+                    list_add_tail(&buffer->list_status, &group->list_unused);
+                    group->count_unused++;
                 }
             }
             group->count_used--;
@@ -354,7 +354,7 @@ MPP_RET mpp_buffer_group_reset(MppBufferGroupImpl *p)
     if (!list_empty(&p->list_used)) {
         MppBufferImpl *pos, *n;
         list_for_each_entry_safe(pos, n, &p->list_used, MppBufferImpl, list_status) {
-           // mpp_buffer_ref_dec(pos);
+            // mpp_buffer_ref_dec(pos);
             pos->discard = 1;
         }
     }
diff --git a/mpp/mpp_buffer_impl.h b/mpp/mpp_buffer_impl.h
index d81ffd5c..a6a06b78 100644
--- a/mpp/mpp_buffer_impl.h
+++ b/mpp/mpp_buffer_impl.h
@@ -46,7 +46,7 @@ struct MppBufferImpl_t {
     /* used for buf on group reset mode
        set disard value to 1 when frame refcount no zero ,
        we will delay relesase buffer after refcount to zero,
-	   not put this buf to unused list
+       not put this buf to unused list
      */
     RK_S32              discard;
     // used flag is for used/unused list detection
diff --git a/osal/inc/mpp_thread.h b/osal/inc/mpp_thread.h
index e55aecf0..65fd7d46 100644
--- a/osal/inc/mpp_thread.h
+++ b/osal/inc/mpp_thread.h
@@ -153,7 +153,8 @@ inline void Condition::signal()
     pthread_cond_signal(&mCond);
 }
 
-class MppMutexCond {
+class MppMutexCond
+{
 public:
     MppMutexCond() {};
     ~MppMutexCond() {};
diff --git a/osal/mpp_allocator.cpp b/osal/mpp_allocator.cpp
index be242758..c73514e7 100644
--- a/osal/mpp_allocator.cpp
+++ b/osal/mpp_allocator.cpp
@@ -85,7 +85,7 @@ MPP_RET mpp_allocator_release(MppAllocator allocator, MppBufferInfo *info)
 {
     if (NULL == allocator || NULL == info) {
         mpp_err_f("invalid input: allocator %p info %p\n",
-                allocator, info);
+                  allocator, info);
         return MPP_ERR_UNKNOW;
     }
 
@@ -113,7 +113,7 @@ MPP_RET mpp_alloctor_get(MppAllocator *allocator, MppAllocatorApi **api, MppBuff
 {
     if (NULL == allocator || NULL == api || type >= MPP_BUFFER_TYPE_BUTT) {
         mpp_err_f("invalid input: allocator %p api %p type %d\n",
-                allocator, api, type);
+                  allocator, api, type);
         return MPP_ERR_UNKNOW;
     }