diff --git a/mpp/base/mpp_dec_cfg.cpp b/mpp/base/mpp_dec_cfg.cpp
index 75335857..957db1ab 100644
--- a/mpp/base/mpp_dec_cfg.cpp
+++ b/mpp/base/mpp_dec_cfg.cpp
@@ -17,6 +17,7 @@
 #define MODULE_TAG "mpp_dec_cfg"
 
 #include "rk_vdec_cfg.h"
+#include <string.h>
 
 #include "mpp_env.h"
 #include "mpp_mem.h"
@@ -25,6 +26,7 @@
 #include "mpp_common.h"
 #include "mpp_thread.h"
 
+#include "mpp_cfg.h"
 #include "mpp_dec_cfg_impl.h"
 
 #define MPP_DEC_CFG_DBG_FUNC            (0x00000001)
@@ -41,113 +43,69 @@
 
 RK_U32 mpp_dec_cfg_debug = 0;
 
-#define EXPAND_AS_ENUM(name, func, type) \
-    SET_##name, \
-    GET_##name,
+typedef struct MppDecCfgInfo_t {
+    MppCfgInfoHead      head;
+    MppTrieNode         trie_node[];
+    /* MppCfgInfoNode is following trie_node */
+} MppDecCfgInfo;
 
-/*  Expand to enum
-    typedef enum CfgType_e {
-        SET_S32,
-        GET_S32,
-        SET_U32,
-        GET_U32,
-        SET_S64,
-        GET_S64,
-        SET_U64,
-        GET_U64,
-        SET_PTR,
-        GET_PTR,
-        CFG_FUNC_TYPE_BUTT,
-    } CfgType;
- */
+static MppCfgInfoNode *mpp_dec_cfg_find(MppDecCfgInfo *info, const char *name)
+{
+    MppTrieNode *node;
 
-#define EXPAND_AS_TYPE(name, func, type) \
-    typedef MPP_RET (*CfgSet##func)(void *ctx, type val); \
-    typedef MPP_RET (*CfgGet##func)(void *ctx, type *val);
+    if (NULL == info || NULL == name)
+        return NULL;
 
-/*  Expand to function type
-    typedef MPP_RET (*CfgSetS32)(void *ctx, RK_S32 val);
-    typedef MPP_RET (*CfgGetS32)(void *ctx, RK_S32 *val);
-    typedef MPP_RET (*CfgSetU32)(void *ctx, RK_U32 val);
-    typedef MPP_RET (*CfgGetU32)(void *ctx, RK_U32 *val);
-    typedef MPP_RET (*CfgSetS64)(void *ctx, RK_S64 val);
-    typedef MPP_RET (*CfgGetS64)(void *ctx, RK_S64 *val);
-    typedef MPP_RET (*CfgSetU64)(void *ctx, RK_U64 val);
-    typedef MPP_RET (*CfgGetU64)(void *ctx, RK_U64 *val);
-    typedef MPP_RET (*CfgSetPtr)(void *ctx, void *val);
-    typedef MPP_RET (*CfgGetPtr)(void *ctx, void **val);
- */
+    node = mpp_trie_get_node(info->trie_node, name);
+    if (NULL == node)
+        return NULL;
 
-#define EXPAND_AS_NAME(name, func, type) \
-    #type, \
-    #type"*",
+    return (MppCfgInfoNode *)(((char *)info->trie_node) + node->id);
+}
 
-/*  Expand to name
-    static const char *dec_cfg_func_names[] = {
-        "RK_S32",
-        "RK_S32*",
-        "RK_U32",
-        "RK_U32*",
-        "RK_S64",
-        "RK_S64*",
-        "RK_U64",
-        "RK_U64*",
-        "void *",
-        "void **",
-    };
- */
+class MppDecCfgService
+{
+private:
+    MppDecCfgService();
+    ~MppDecCfgService();
+    MppDecCfgService(const MppDecCfgService &);
+    MppDecCfgService &operator=(const MppDecCfgService &);
 
-#define TYPE_ENTRY_TABLE(ENTRY)  \
-    ENTRY(S32, S32, RK_S32) \
-    ENTRY(U32, U32, RK_U32) \
-    ENTRY(S64, S64, RK_S64) \
-    ENTRY(U64, U64, RK_U64) \
-    ENTRY(PTR, Ptr, void *)
+    MppDecCfgInfo *mInfo;
+    RK_S32 mCfgSize;
 
-typedef enum CfgType_e {
-    TYPE_ENTRY_TABLE(EXPAND_AS_ENUM)
-    CFG_FUNC_TYPE_BUTT,
-} CfgType;
+public:
+    static MppDecCfgService *get() {
+        static Mutex lock;
+        static MppDecCfgService instance;
 
-TYPE_ENTRY_TABLE(EXPAND_AS_TYPE)
-
-static const char *dec_cfg_func_names[] = {
-    TYPE_ENTRY_TABLE(EXPAND_AS_NAME)
-};
-
-#define EXPAND_AS_FUNC(base, name, func_type, in_type, flag, field0, field1) \
-    MPP_RET set_##base##_##name(MppDecCfgSet *cfg, in_type name) \
-    { \
-        mpp_dec_cfg_dbg_func("enter\n"); \
-        if (cfg->field0.field1 != (in_type)name || SET_##func_type == SET_PTR) { \
-            cfg->field0.field1 = (in_type)name; \
-            cfg->field0.change |= flag; \
-        } \
-        return MPP_OK; \
-    } \
-    MPP_RET get_##base##_##name(MppDecCfgSet *cfg, in_type *name) \
-    { \
-        mpp_dec_cfg_dbg_func("enter\n"); \
-        *name = (in_type)cfg->field0.field1; \
-        return MPP_OK; \
+        AutoMutex auto_lock(&lock);
+        return &instance;
     }
 
-#define EXPAND_AS_API(base, name, func_type, in_type, flag, field0, field1) \
-    static MppDecCfgApi api_##base##_##name = \
+    MppCfgInfoNode *get_info(const char *name) { return mpp_dec_cfg_find(mInfo, name); };
+    MppCfgInfoNode *get_info_root();
+
+    RK_S32 get_node_count() { return mInfo ? mInfo->head.node_count : 0; };
+    RK_S32 get_info_count() { return mInfo ? mInfo->head.info_count : 0; };
+    RK_S32 get_info_size() { return mInfo ? mInfo->head.info_size : 0; };
+    RK_S32 get_cfg_size() { return mCfgSize; };
+};
+
+#define EXPAND_AS_API(base, name, cfg_type, in_type, flag, field_change, field_data) \
+    MppCfgApi api_##base##_##name = \
     { \
         #base":"#name, \
-        SET_##func_type, \
-        GET_##func_type, \
-        (void *)set_##base##_##name, \
-        (void *)get_##base##_##name, \
+        CFG_FUNC_TYPE_##cfg_type, \
+        (RK_U32)((long)&(((MppDecCfgSet *)0)->field_change.change)), \
+        flag, \
+        (RK_U32)((long)&(((MppDecCfgSet *)0)->field_change.field_data)), \
+        sizeof((((MppDecCfgSet *)0)->field_change.field_data)), \
     };
 
-#define EXPAND_AS_ARRAY(base, name, func_type, in_type, flag, field0, field1) \
+#define EXPAND_AS_ARRAY(base, name, cfg_type, in_type, flag, field_change, field_data) \
     &api_##base##_##name,
 
-#define EXPAND_AS_STRLEN(base, name, func_type, in_type, flag, field0, field1) \
-    dec_const_strlen( #base":"#name ) +
-
 #define ENTRY_TABLE(ENTRY)  \
     /* rc config */ \
     ENTRY(base, type,           U32, MppCtxType,        MPP_DEC_CFG_CHANGE_TYPE,            base, type) \
@@ -163,79 +121,138 @@ static const char *dec_cfg_func_names[] = {
     ENTRY(base, disable_error,  U32, RK_U32,            MPP_DEC_CFG_CHANGE_DISABLE_ERROR,   base, disable_error) \
     ENTRY(base, enable_vproc,   U32, RK_U32,            MPP_DEC_CFG_CHANGE_ENABLE_VPROC,    base, enable_vproc) \
     ENTRY(base, enable_fast_play, U32, RK_U32,          MPP_DEC_CFG_CHANGE_ENABLE_FAST_PLAY, base, enable_fast_play) \
-    ENTRY(cb, pkt_rdy_cb,       PTR, MppExtCbFunc,      MPP_DEC_CB_CFG_CHANGE_PKT_RDY,      cb, pkt_rdy_cb) \
-    ENTRY(cb, pkt_rdy_ctx,      PTR, MppExtCbCtx,       MPP_DEC_CB_CFG_CHANGE_PKT_RDY,      cb, pkt_rdy_ctx) \
+    ENTRY(cb, pkt_rdy_cb,       Ptr, MppExtCbFunc,      MPP_DEC_CB_CFG_CHANGE_PKT_RDY,      cb, pkt_rdy_cb) \
+    ENTRY(cb, pkt_rdy_ctx,      Ptr, MppExtCbCtx,       MPP_DEC_CB_CFG_CHANGE_PKT_RDY,      cb, pkt_rdy_ctx) \
     ENTRY(cb, pkt_rdy_cmd,      S32, RK_S32,            MPP_DEC_CB_CFG_CHANGE_PKT_RDY,      cb, pkt_rdy_cmd) \
-    ENTRY(cb, frm_rdy_cb,       PTR, MppExtCbFunc,      MPP_DEC_CB_CFG_CHANGE_FRM_RDY,      cb, frm_rdy_cb) \
-    ENTRY(cb, frm_rdy_ctx,      PTR, MppExtCbCtx,       MPP_DEC_CB_CFG_CHANGE_FRM_RDY,      cb, frm_rdy_ctx) \
+    ENTRY(cb, frm_rdy_cb,       Ptr, MppExtCbFunc,      MPP_DEC_CB_CFG_CHANGE_FRM_RDY,      cb, frm_rdy_cb) \
+    ENTRY(cb, frm_rdy_ctx,      Ptr, MppExtCbCtx,       MPP_DEC_CB_CFG_CHANGE_FRM_RDY,      cb, frm_rdy_ctx) \
     ENTRY(cb, frm_rdy_cmd,      S32, RK_S32,            MPP_DEC_CB_CFG_CHANGE_FRM_RDY,      cb, frm_rdy_cmd)
 
-ENTRY_TABLE(EXPAND_AS_FUNC)
-ENTRY_TABLE(EXPAND_AS_API)
-
-static MppDecCfgApi *dec_cfg_apis[] = {
-    ENTRY_TABLE(EXPAND_AS_ARRAY)
-};
-
-RK_S32 dec_const_strlen(const char* str)
+static MppDecCfgInfo *mpp_dec_cfg_flaten(MppTrie trie, MppCfgApi **cfgs)
 {
-    return *str ? 1 + dec_const_strlen(str + 1) : 0;
-}
+    MppDecCfgInfo *info = NULL;
+    MppTrieNode *node_root = mpp_trie_node_root(trie);
+    RK_S32 node_count = mpp_trie_get_node_count(trie);
+    RK_S32 info_count = mpp_trie_get_info_count(trie);
+    MppTrieNode *node_trie;
+    char *buf = NULL;
+    RK_S32 pos = 0;
+    RK_S32 len = 0;
+    RK_S32 i;
 
-static RK_S32 dec_node_len = ENTRY_TABLE(EXPAND_AS_STRLEN) + 16;
+    pos += node_count * sizeof(*node_root);
 
-class MppDecCfgService
-{
-private:
-    MppDecCfgService();
-    ~MppDecCfgService();
-    MppDecCfgService(const MppDecCfgService &);
-    MppDecCfgService &operator=(const MppDecCfgService &);
+    mpp_dec_cfg_dbg_info("info node offset %d\n", pos);
 
-    MppTrie mCfgApi;
+    /* update info size and string name size */
+    for (i = 0; i < info_count; i++) {
+        const char *name = cfgs[i]->name;
+        const char **info_trie = mpp_trie_get_info(trie, name);
 
-public:
-    static MppDecCfgService *get() {
-        static Mutex lock;
-        static MppDecCfgService instance;
-
-        AutoMutex auto_lock(&lock);
-        return &instance;
+        mpp_assert(*info_trie == name);
+        len = strlen(name);
+        pos += sizeof(MppCfgInfoNode) + MPP_ALIGN(len + 1, sizeof(RK_U64));
     }
 
-    MppTrie get_api() { return mCfgApi; };
-};
+    len = pos + sizeof(*info);
+    mpp_dec_cfg_dbg_info("tire + info size %d total %d\n", pos, len);
+
+    info = mpp_malloc_size(MppDecCfgInfo, len);
+    if (NULL == info)
+        return NULL;
+
+    memcpy(info->trie_node, node_root, sizeof(*node_root) * node_count);
+
+    node_root = info->trie_node;
+    pos = node_count * sizeof(*node_root);
+    buf = (char *)node_root + pos;
+
+    for (i = 0; i < info_count; i++) {
+        MppCfgInfoNode *node_info = (MppCfgInfoNode *)buf;
+        MppCfgApi *api = cfgs[i];
+        const char *name = api->name;
+        RK_S32 node_size;
+
+        node_trie = mpp_trie_get_node(node_root, name);
+        node_trie->id = pos;
+
+        node_info->name_len     = MPP_ALIGN(strlen(name) + 1, sizeof(RK_U64));
+        node_info->data_type    = api->data_type;
+        node_info->flag_offset  = api->flag_offset;
+        node_info->flag_value   = api->flag_value;
+        node_info->data_offset  = api->data_offset;
+        node_info->data_size    = api->data_size;
+        node_info->node_next    = 0;
+
+        node_size = node_info->name_len + sizeof(*node_info);
+        node_info->node_size    = node_size;
+
+        mpp_cfg_node_fixup_func(node_info);
+
+        strcpy(node_info->name, name);
+
+        mpp_dec_cfg_dbg_info("cfg %s offset %d size %d update %d flag %x\n",
+                             node_info->name,
+                             node_info->data_offset, node_info->data_size,
+                             node_info->flag_offset, node_info->flag_value);
+
+        pos += node_size;
+        buf += node_size;
+    }
+
+    mpp_dec_cfg_dbg_info("total size %d +H %d\n", pos, pos + sizeof(info->head));
+
+    info->head.info_size  = pos;
+    info->head.info_count = info_count;
+    info->head.node_count = node_count;
+    info->head.cfg_size   = sizeof(MppDecCfgSet);
+
+    return info;
+}
 
 MppDecCfgService::MppDecCfgService() :
-    mCfgApi(NULL)
+    mInfo(NULL),
+    mCfgSize(0)
 {
+    ENTRY_TABLE(EXPAND_AS_API);
+
+    MppCfgApi *cfgs[] = {
+        ENTRY_TABLE(EXPAND_AS_ARRAY)
+    };
+
+    RK_S32 cfg_cnt = MPP_ARRAY_ELEMS(cfgs);
+    MppTrie trie;
     MPP_RET ret;
     RK_S32 i;
-    RK_S32 api_cnt = MPP_ARRAY_ELEMS(dec_cfg_apis);
-
     /*
      * NOTE: The dec_node_len is not the real node count should be allocated
      * The max node count should be stream lengthg * 2 if each word is different.
      */
-    ret = mpp_trie_init(&mCfgApi, dec_node_len, api_cnt);
+    ret = mpp_trie_init(&trie, 284, cfg_cnt);
     if (ret) {
-        mpp_err_f("failed to init enc cfg set trie\n");
-    } else {
-        for (i = 0; i < api_cnt; i++)
-            mpp_trie_add_info(mCfgApi, &dec_cfg_apis[i]->name);
+        mpp_err_f("failed to init dec cfg set trie\n");
+        return ;
     }
+    for (i = 0; i < cfg_cnt; i++)
+        mpp_trie_add_info(trie, &cfgs[i]->name);
 
-    if (dec_node_len < mpp_trie_get_node_count(mCfgApi))
-        mpp_err_f("create info %d with not enough node %d -> %d info\n",
-                  api_cnt, dec_node_len, mpp_trie_get_node_count(mCfgApi));
+    mInfo = mpp_dec_cfg_flaten(trie, cfgs);
+    mCfgSize = mInfo->head.cfg_size;
+
+    mpp_trie_deinit(trie);
 }
 
 MppDecCfgService::~MppDecCfgService()
 {
-    if (mCfgApi) {
-        mpp_trie_deinit(mCfgApi);
-        mCfgApi = NULL;
-    }
+    MPP_FREE(mInfo);
+}
+
+MppCfgInfoNode *MppDecCfgService::get_info_root()
+{
+    if (NULL == mInfo)
+        return NULL;
+
+    return (MppCfgInfoNode *)(mInfo->trie_node + mInfo->head.node_count);
 }
 
 void mpp_dec_cfg_set_default(MppDecCfgSet *cfg)
@@ -249,21 +266,23 @@ void mpp_dec_cfg_set_default(MppDecCfgSet *cfg)
 MPP_RET mpp_dec_cfg_init(MppDecCfg *cfg)
 {
     MppDecCfgImpl *p = NULL;
+    RK_S32 cfg_size;
 
     if (NULL == cfg) {
         mpp_err_f("invalid NULL input config\n");
         return MPP_ERR_NULL_PTR;
     }
 
-    p = mpp_calloc(MppDecCfgImpl, 1);
+    cfg_size = MppDecCfgService::get()->get_cfg_size();
+    p = mpp_calloc_size(MppDecCfgImpl, cfg_size + sizeof(p->size));
     if (NULL == p) {
-        mpp_err_f("create encoder config failed %p\n", p);
+        mpp_err_f("create decoder config failed %p\n", p);
         *cfg = NULL;
         return MPP_ERR_NOMEM;
     }
 
-    p->size = sizeof(*p);
-    p->api = MppDecCfgService::get()->get_api();
+    mpp_assert(cfg_size == sizeof(p->cfg));
+    p->size = cfg_size;
     mpp_dec_cfg_set_default(&p->cfg);
 
     mpp_env_get_u32("mpp_dec_cfg_debug", &mpp_dec_cfg_debug, 0);
@@ -285,7 +304,7 @@ MPP_RET mpp_dec_cfg_deinit(MppDecCfg cfg)
     return MPP_OK;
 }
 
-#define ENC_CFG_SET_ACCESS(func_name, in_type, func_enum, func_type) \
+#define ENC_CFG_SET_ACCESS(func_name, in_type, cfg_type) \
     MPP_RET func_name(MppDecCfg cfg, const char *name, in_type val) \
     { \
         if (NULL == cfg || NULL == name) { \
@@ -293,29 +312,23 @@ MPP_RET mpp_dec_cfg_deinit(MppDecCfg cfg)
             return MPP_ERR_NULL_PTR; \
         } \
         MppDecCfgImpl *p = (MppDecCfgImpl *)cfg; \
-        const char **info = mpp_trie_get_info(p->api, name); \
-        if (NULL == info) { \
-            mpp_err_f("failed to set %s to %d\n", name, val); \
+        MppCfgInfoNode *info = MppDecCfgService::get()->get_info(name); \
+        if (CHECK_CFG_INFO(info, name, CFG_FUNC_TYPE_##cfg_type)) { \
             return MPP_NOK; \
         } \
-        MppDecCfgApi *api = (MppDecCfgApi *)info; \
-        if (api->type_set != func_enum) { \
-            mpp_err_f("%s expect %s input NOT %s\n", api->name, \
-                      dec_cfg_func_names[api->type_set], \
-                      dec_cfg_func_names[func_enum]); \
-        } \
-        mpp_dec_cfg_dbg_set("name %s type %s\n", api->name, dec_cfg_func_names[api->type_set]); \
-        MPP_RET ret = ((func_type)api->api_set)(&p->cfg, val); \
+        mpp_dec_cfg_dbg_set("name %s type %s\n", info->name, cfg_type_names[info->data_type]); \
+        MPP_RET ret = MPP_CFG_SET_##cfg_type(info, &p->cfg, val); \
         return ret; \
     }
 
-ENC_CFG_SET_ACCESS(mpp_dec_cfg_set_s32, RK_S32, SET_S32, CfgSetS32);
-ENC_CFG_SET_ACCESS(mpp_dec_cfg_set_u32, RK_U32, SET_U32, CfgSetU32);
-ENC_CFG_SET_ACCESS(mpp_dec_cfg_set_s64, RK_S64, SET_S64, CfgSetS64);
-ENC_CFG_SET_ACCESS(mpp_dec_cfg_set_u64, RK_U64, SET_U64, CfgSetU64);
-ENC_CFG_SET_ACCESS(mpp_dec_cfg_set_ptr, void *, SET_PTR, CfgSetPtr);
+ENC_CFG_SET_ACCESS(mpp_dec_cfg_set_s32, RK_S32, S32);
+ENC_CFG_SET_ACCESS(mpp_dec_cfg_set_u32, RK_U32, U32);
+ENC_CFG_SET_ACCESS(mpp_dec_cfg_set_s64, RK_S64, S64);
+ENC_CFG_SET_ACCESS(mpp_dec_cfg_set_u64, RK_U64, U64);
+ENC_CFG_SET_ACCESS(mpp_dec_cfg_set_ptr, void *, Ptr);
+ENC_CFG_SET_ACCESS(mpp_dec_cfg_set_st,  void *, St);
 
-#define ENC_CFG_GET_ACCESS(func_name, in_type, func_enum, func_type) \
+#define ENC_CFG_GET_ACCESS(func_name, in_type, cfg_type) \
     MPP_RET func_name(MppDecCfg cfg, const char *name, in_type *val) \
     { \
         if (NULL == cfg || NULL == name) { \
@@ -323,42 +336,46 @@ ENC_CFG_SET_ACCESS(mpp_dec_cfg_set_ptr, void *, SET_PTR, CfgSetPtr);
             return MPP_ERR_NULL_PTR; \
         } \
         MppDecCfgImpl *p = (MppDecCfgImpl *)cfg; \
-        const char **info = mpp_trie_get_info(p->api, name); \
-        if (NULL == info) { \
-            mpp_err_f("failed to set %s to %d\n", name, val); \
+        MppCfgInfoNode *info = MppDecCfgService::get()->get_info(name); \
+        if (CHECK_CFG_INFO(info, name, CFG_FUNC_TYPE_##cfg_type)) { \
             return MPP_NOK; \
         } \
-        MppDecCfgApi *api = (MppDecCfgApi *)info; \
-        if (api->type_get != func_enum) { \
-            mpp_err_f("%s expect %s input not %s\n", api->name, \
-                      dec_cfg_func_names[api->type_get], \
-                      dec_cfg_func_names[func_enum]); \
-        } \
-        mpp_dec_cfg_dbg_get("name %s type %s\n", api->name, dec_cfg_func_names[api->type_get]); \
-        MPP_RET ret = ((func_type)api->api_get)(&p->cfg, val); \
+        mpp_dec_cfg_dbg_set("name %s type %s\n", info->name, cfg_type_names[info->data_type]); \
+        MPP_RET ret = MPP_CFG_GET_##cfg_type(info, &p->cfg, val); \
         return ret; \
     }
 
-ENC_CFG_GET_ACCESS(mpp_dec_cfg_get_s32, RK_S32, GET_S32, CfgGetS32);
-ENC_CFG_GET_ACCESS(mpp_dec_cfg_get_u32, RK_U32, GET_U32, CfgGetU32);
-ENC_CFG_GET_ACCESS(mpp_dec_cfg_get_s64, RK_S64, GET_S64, CfgGetS64);
-ENC_CFG_GET_ACCESS(mpp_dec_cfg_get_u64, RK_U64, GET_U64, CfgGetU64);
-ENC_CFG_GET_ACCESS(mpp_dec_cfg_get_ptr, void *, GET_PTR, CfgGetPtr);
+ENC_CFG_GET_ACCESS(mpp_dec_cfg_get_s32, RK_S32, S32);
+ENC_CFG_GET_ACCESS(mpp_dec_cfg_get_u32, RK_U32, U32);
+ENC_CFG_GET_ACCESS(mpp_dec_cfg_get_s64, RK_S64, S64);
+ENC_CFG_GET_ACCESS(mpp_dec_cfg_get_u64, RK_U64, U64);
+ENC_CFG_GET_ACCESS(mpp_dec_cfg_get_ptr, void *, Ptr);
+ENC_CFG_GET_ACCESS(mpp_dec_cfg_get_st,  void  , St);
 
 void mpp_dec_cfg_show(void)
 {
-    RK_U32 i;
+    RK_S32 node_count = MppDecCfgService::get()->get_node_count();
+    RK_S32 info_count = MppDecCfgService::get()->get_info_count();
+    MppCfgInfoNode *info = MppDecCfgService::get()->get_info_root();
 
     mpp_log("dumping valid configure string start\n");
 
-    for (i = 0; i < MPP_ARRAY_ELEMS(dec_cfg_apis); i++)
-        mpp_log("%-25s type set:%s get:%s\n", dec_cfg_apis[i]->name,
-                dec_cfg_func_names[dec_cfg_apis[i]->type_set],
-                dec_cfg_func_names[dec_cfg_apis[i]->type_get]);
+    if (info) {
+        char *p = (char *)info;
+        RK_S32 i;
 
+        for (i = 0; i < info_count; i++) {
+            info = (MppCfgInfoNode *)p;
+
+            mpp_log("%-25s type %s\n", info->name,
+                    cfg_type_names[info->data_type]);
+
+            p += info->node_size;
+        }
+    }
     mpp_log("dumping valid configure string done\n");
 
-    mpp_log("total api count %d with node %d -> %d info\n",
-            MPP_ARRAY_ELEMS(dec_cfg_apis), dec_node_len,
-            mpp_trie_get_node_count(MppDecCfgService::get()->get_api()));
+    mpp_log("total cfg count %d with %d node size %d\n",
+            info_count, node_count,
+            MppDecCfgService::get()->get_info_size());
 }
diff --git a/mpp/inc/mpp_dec_cfg.h b/mpp/inc/mpp_dec_cfg.h
index 8112cec7..734dc9e7 100644
--- a/mpp/inc/mpp_dec_cfg.h
+++ b/mpp/inc/mpp_dec_cfg.h
@@ -91,15 +91,4 @@ typedef struct MppDecCfgSet_t {
     MppDecCbCfg         cb;
 } MppDecCfgSet;
 
-/*
- * MppDecCfgApi is the function set for configure MppDecCfgSet by name
- */
-typedef struct MppDecCfgApi_t {
-    const char          *name;
-    RK_S32              type_set;
-    RK_S32              type_get;
-    void                *api_set;
-    void                *api_get;
-} MppDecCfgApi;
-
 #endif /* __MPP_DEC_CFG_H__ */