diff --git a/mpp/codec/rc/CMakeLists.txt b/mpp/codec/rc/CMakeLists.txt
index dd492bad..0c8cb229 100644
--- a/mpp/codec/rc/CMakeLists.txt
+++ b/mpp/codec/rc/CMakeLists.txt
@@ -15,7 +15,7 @@ add_library(enc_rc STATIC
     rc_data_base.cpp
     rc_data_impl.cpp
     rc_data.cpp
-    rc_impl.cpp
+    rc_api.c
     rc.cpp
     rc_base.cpp
     )
diff --git a/mpp/codec/rc/rc.cpp b/mpp/codec/rc/rc.cpp
index 780fc155..75800cfb 100644
--- a/mpp/codec/rc/rc.cpp
+++ b/mpp/codec/rc/rc.cpp
@@ -26,7 +26,7 @@
 
 #include "rc_debug.h"
 #include "rc.h"
-#include "rc_impl.h"
+#include "rc_api.h"
 #include "rc_base.h"
 
 typedef struct MppRcImpl_t {
@@ -60,7 +60,7 @@ MPP_RET rc_init(RcCtx *ctx, MppCodingType type, const char **request_name)
 
     rc_dbg_func("enter type %x name %s\n", type, name);
 
-    RcImplApi *api = RcImplApiService::get_instance()->api_get(type, name);
+    RcImplApi *api = rc_api_get(type, name);
 
     mpp_assert(api);
 
diff --git a/mpp/codec/rc/rc_api.c b/mpp/codec/rc/rc_api.c
new file mode 100644
index 00000000..7049532f
--- /dev/null
+++ b/mpp/codec/rc/rc_api.c
@@ -0,0 +1,309 @@
+/* SPDX-License-Identifier: Apache-2.0 OR MIT */
+/*
+ * Copyright (c) 2016 Rockchip Electronics Co., Ltd.
+ */
+
+#define MODULE_TAG "rc_api"
+
+#include <string.h>
+
+#include "mpp_env.h"
+#include "mpp_mem.h"
+#include "mpp_list.h"
+#include "mpp_2str.h"
+#include "mpp_common.h"
+#include "mpp_singleton.h"
+
+#include "rc_debug.h"
+#include "rc_api.h"
+
+#include "h264e_rc.h"
+#include "h265e_rc.h"
+#include "jpege_rc.h"
+#include "vp8e_rc.h"
+#include "rc_model_v2_smt.h"
+
+#define get_srv_rc_api_srv(caller) \
+    ({ \
+        MppRcApiSrv *__tmp; \
+        if (!rc_api_srv) { \
+            rc_api_srv_init(); \
+        } \
+        if (rc_api_srv) { \
+            __tmp = rc_api_srv; \
+        } else { \
+            mpp_err("mpp rc api srv not init at %s : %s\n", __FUNCTION__, caller); \
+            __tmp = NULL; \
+        } \
+        __tmp; \
+    })
+
+// use class to register RcImplApi
+typedef struct RcImplApiNode_t {
+    /* list to list in MppRcApiSrv */
+    struct list_head    list;
+    char                name[64];
+    MppCodingType       type;
+    RcApiBrief          brief;
+    RcImplApi           api;
+} RcImplApiNode;
+
+typedef struct MppRcApiSrv_t {
+    MppMutex            lock;
+    RK_U32              api_cnt;
+    /* list for list in RcImplApiNode */
+    struct list_head    list;
+} MppRcApiSrv;
+
+static MppRcApiSrv *rc_api_srv = NULL;
+
+static void rc_api_srv_init()
+{
+    MppRcApiSrv *srv = rc_api_srv;
+
+    mpp_env_get_u32("rc_debug", &rc_debug, 0);
+
+    if (srv)
+        return;
+
+    srv = mpp_malloc(MppRcApiSrv, 1);
+    if (!srv) {
+        mpp_err_f("failed to create rc api srv\n");
+        return;
+    }
+
+    rc_api_srv = srv;
+
+    mpp_mutex_init(&srv->lock);
+    INIT_LIST_HEAD(&srv->list);
+    srv->api_cnt = 0;
+
+    /* add all default rc apis */
+    rc_api_add(&default_h264e);
+    rc_api_add(&default_h265e);
+    rc_api_add(&default_jpege);
+    rc_api_add(&default_vp8e);
+    rc_api_add(&smt_h264e);
+    rc_api_add(&smt_h265e);
+}
+
+static void rc_api_srv_deinit()
+{
+    MppRcApiSrv *srv = rc_api_srv;
+
+    if (!srv)
+        return;
+
+    mpp_mutex_lock(&srv->lock);
+
+    if (srv->api_cnt) {
+        RcImplApiNode *pos, *n;
+
+        list_for_each_entry_safe(pos, n, &srv->list, RcImplApiNode, list) {
+            rc_dbg_impl("%-5s rc api %s is removed\n",
+                        strof_coding_type(pos->type), pos->name);
+
+            list_del_init(&pos->list);
+            MPP_FREE(pos);
+            srv->api_cnt--;
+        }
+
+        mpp_assert(srv->api_cnt == 0);
+    }
+
+    mpp_mutex_unlock(&srv->lock);
+    mpp_mutex_destroy(&srv->lock);
+    MPP_FREE(srv);
+    rc_api_srv = NULL;
+}
+
+static RcImplApi *_rc_api_get(MppRcApiSrv *srv, MppCodingType type, const char *name)
+{
+    if (!srv->api_cnt)
+        return NULL;
+
+    if (name) {
+        RcImplApiNode *pos, *n;
+
+        list_for_each_entry_safe(pos, n, &srv->list, RcImplApiNode, list) {
+            if (type == pos->type &&
+                !strncmp(name, pos->name, sizeof(pos->name) - 1)) {
+                rc_dbg_impl("%-5s rc api %s is selected\n",
+                            strof_coding_type(type), pos->name);
+                return &pos->api;
+            }
+        }
+    }
+
+    rc_dbg_impl("%-5s rc api %s can not be found\n", strof_coding_type(type), name);
+
+    return NULL;
+}
+
+static void set_node_api(RcImplApiNode *node, const RcImplApi *api)
+{
+    node->api = *api;
+    node->type = api->type;
+
+    strncpy(node->name, api->name, sizeof(node->name) - 1);
+    node->api.name = api->name;
+
+    node->brief.type = api->type;
+    node->brief.name = api->name;
+}
+
+MPP_RET rc_api_add(const RcImplApi *api)
+{
+    MppRcApiSrv *srv = get_srv_rc_api_srv(__FUNCTION__);
+    RcImplApiNode *node = NULL;
+    RcImplApi *node_api = NULL;
+
+    if (!api) {
+        mpp_err_f("unable to register NULL api\n");
+        return MPP_NOK;
+    }
+
+    if (!srv)
+        return MPP_NOK;
+
+    mpp_mutex_lock(&srv->lock);
+
+    /* search for same node for replacement */
+    node_api = _rc_api_get(srv, api->type, api->name);
+
+    if (!node_api) {
+        node = mpp_malloc(RcImplApiNode, 1);
+        if (!node) {
+            mpp_err_f("failed to create api node\n");
+            mpp_mutex_unlock(&srv->lock);
+            return MPP_NOK;
+        }
+
+        INIT_LIST_HEAD(&node->list);
+        list_add_tail(&node->list, &srv->list);
+
+        srv->api_cnt++;
+        rc_dbg_impl("%-5s rc api %s is added\n", strof_coding_type(api->type), api->name);
+    } else {
+        node = container_of(node_api, RcImplApiNode, api);
+        rc_dbg_impl("%-5s rc api %s is updated\n", strof_coding_type(api->type), api->name);
+    }
+
+    set_node_api(node, api);
+    mpp_mutex_unlock(&srv->lock);
+
+    return MPP_OK;
+}
+
+RcImplApi *rc_api_get(MppCodingType type, const char *name)
+{
+    MppRcApiSrv *srv = get_srv_rc_api_srv(__FUNCTION__);
+
+    if (!srv)
+        return NULL;
+
+    return _rc_api_get(srv, type, name);
+}
+
+MPP_RET rc_api_get_all(MppRcApiSrv *srv, RcApiBrief *brief, RK_S32 *count, RK_S32 max_count)
+{
+    RcImplApiNode *pos, *n;
+    RK_S32 cnt = 0;
+
+    mpp_mutex_lock(&srv->lock);
+
+    list_for_each_entry_safe(pos, n, &srv->list, RcImplApiNode, list) {
+        if (cnt >= max_count)
+            break;
+
+        brief[cnt++] = pos->brief;
+    }
+
+    *count = cnt;
+    mpp_mutex_unlock(&srv->lock);
+
+    return MPP_OK;
+}
+
+MPP_RET rc_api_get_by_type(MppRcApiSrv *srv, RcApiBrief *brief, RK_S32 *count,
+                           RK_S32 max_count, MppCodingType type)
+{
+    RcImplApiNode *pos, *n;
+    RK_S32 cnt = 0;
+
+    mpp_mutex_lock(&srv->lock);
+
+    list_for_each_entry_safe(pos, n, &srv->list, RcImplApiNode, list) {
+        if (cnt >= max_count)
+            break;
+
+        if (pos->type != type)
+            continue;
+
+        brief[cnt++] = pos->brief;
+    }
+
+    *count = cnt;
+    mpp_mutex_unlock(&srv->lock);
+
+    return MPP_OK;
+}
+
+MPP_RET rc_brief_get_all(RcApiQueryAll *query)
+{
+    MppRcApiSrv *srv = rc_api_srv;
+    RcApiBrief *brief;
+    RK_S32 *count;
+    RK_S32 max_count;
+
+    if (!srv)
+        return MPP_NOK;
+
+    if (!query) {
+        mpp_err_f("invalide NULL query input\n");
+        return MPP_ERR_NULL_PTR;
+    }
+
+    brief = query->brief;
+    count = &query->count;
+    max_count = query->max_count;
+
+    if (!brief || max_count <= 0) {
+        mpp_err_f("invalide brief buffer %p max count %d\n", brief, max_count);
+        return MPP_NOK;
+    }
+
+    return rc_api_get_all(srv, brief, count, max_count);
+}
+
+MPP_RET rc_brief_get_by_type(RcApiQueryType *query)
+{
+    MppRcApiSrv *srv = rc_api_srv;
+    RcApiBrief *brief;
+    RK_S32 *count;
+    RK_S32 max_count;
+    MppCodingType type;
+
+    if (!srv)
+        return MPP_NOK;
+
+    if (!query) {
+        mpp_err_f("invalide NULL query input\n");
+        return MPP_ERR_NULL_PTR;
+    }
+
+    brief = query->brief;
+    count = &query->count;
+    max_count = query->max_count;
+    type = query->type;
+
+    if (!brief || max_count <= 0) {
+        mpp_err_f("invalide brief buffer %p max count %d type %x\n",
+                  brief, max_count, type);
+        return MPP_NOK;
+    }
+
+    return rc_api_get_by_type(srv, brief, count, max_count, type);
+}
+
+MPP_SINGLETON(MPP_SGLN_ENC_RC_API, rc_api, rc_api_srv_init, rc_api_srv_deinit)
diff --git a/mpp/codec/rc/rc_api.h b/mpp/codec/rc/rc_api.h
new file mode 100644
index 00000000..aa5e0e3a
--- /dev/null
+++ b/mpp/codec/rc/rc_api.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: Apache-2.0 OR MIT */
+/*
+ * Copyright (c) 2016 Rockchip Electronics Co., Ltd.
+ */
+
+#ifndef __RC_IMPL_H__
+#define __RC_IMPL_H__
+
+#include "mpp_rc_api.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+RcImplApi *rc_api_get(MppCodingType type, const char *name);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __RC_IMPL_H__ */
diff --git a/mpp/codec/rc/rc_debug.h b/mpp/codec/rc/rc_debug.h
index 754f5627..1c849baa 100644
--- a/mpp/codec/rc/rc_debug.h
+++ b/mpp/codec/rc/rc_debug.h
@@ -34,7 +34,7 @@
 #define rc_dbg_f(flag, fmt, ...)    _mpp_dbg_f(rc_debug, flag, fmt, ## __VA_ARGS__)
 
 #define rc_dbg_func(fmt, ...)       rc_dbg_f(RC_DBG_FUNCTION, fmt, ## __VA_ARGS__)
-#define rc_dbg_impl(fmt, ...)       rc_dbg_f(RC_DBG_API_IMPL, fmt, ## __VA_ARGS__)
+#define rc_dbg_impl(fmt, ...)       rc_dbg(RC_DBG_API_IMPL, fmt, ## __VA_ARGS__)
 #define rc_dbg_fps(fmt, ...)        rc_dbg_f(RC_DBG_FPS, fmt, ## __VA_ARGS__)
 #define rc_dbg_bps(fmt, ...)        rc_dbg_f(RC_DBG_BPS, fmt, ## __VA_ARGS__)
 #define rc_dbg_rc(fmt, ...)         rc_dbg_f(RC_DBG_RC, fmt, ## __VA_ARGS__)
diff --git a/mpp/codec/rc/rc_impl.cpp b/mpp/codec/rc/rc_impl.cpp
deleted file mode 100644
index c20acd77..00000000
--- a/mpp/codec/rc/rc_impl.cpp
+++ /dev/null
@@ -1,257 +0,0 @@
-/*
- * Copyright 2016 Rockchip Electronics Co. LTD
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define MODULE_TAG "rc_impl"
-
-#include <string.h>
-
-#include "mpp_env.h"
-#include "mpp_mem.h"
-#include "mpp_common.h"
-
-#include "rc_debug.h"
-#include "rc_impl.h"
-
-#include "h264e_rc.h"
-#include "h265e_rc.h"
-#include "jpege_rc.h"
-#include "vp8e_rc.h"
-#include "rc_model_v2_smt.h"
-
-const RcImplApi *rc_apis[] = {
-    &default_h264e,
-    &default_h265e,
-    &default_jpege,
-    &default_vp8e,
-    &smt_h264e,
-    &smt_h265e,
-};
-
-// use class to register RcImplApi
-typedef struct RcImplApiNode_t {
-    struct list_head    list;
-    char                name[32];
-    MppCodingType       type;
-    RcApiBrief          brief;
-    RcImplApi           api;
-} RcImplApiNode;
-
-static void set_node_api(RcImplApiNode *node, const RcImplApi *api)
-{
-    node->api = *api;
-    node->type = api->type;
-
-    strncpy(node->name, api->name, sizeof(node->name) - 1);
-    node->api.name = api->name;
-
-    node->brief.type = api->type;
-    node->brief.name = api->name;
-}
-
-RcImplApiService::RcImplApiService()
-{
-    RK_U32 i;
-
-    mpp_env_get_u32("rc_debug", &rc_debug, 0);
-
-    INIT_LIST_HEAD(&mApis);
-    mApiCount = 0;
-
-    mpp_mutex_init(&lock);
-    for (i = 0; i < MPP_ARRAY_ELEMS(rc_apis); i++)
-        api_add(rc_apis[i]);
-}
-
-RcImplApiService::~RcImplApiService()
-{
-    RcImplApiNode *pos, *n;
-
-    mpp_mutex_lock(&lock);
-
-    list_for_each_entry_safe(pos, n, &mApis, RcImplApiNode, list) {
-        MPP_FREE(pos);
-        mApiCount--;
-    }
-
-    mpp_assert(mApiCount == 0);
-
-    mpp_mutex_unlock(&lock);
-    mpp_mutex_destroy(&lock);
-}
-
-MPP_RET RcImplApiService::api_add(const RcImplApi *api)
-{
-    mpp_mutex_lock(&lock);
-
-    if (NULL == api) {
-        mpp_err_f("unable to register NULL api\n");
-        mpp_mutex_unlock(&lock);
-        return MPP_NOK;
-    }
-
-    /* search for same node for replacement */
-    RcImplApiNode *node = NULL;
-    RcImplApi *node_api = api_get(api->type, api->name);
-
-    if (NULL == node_api) {
-        node = mpp_malloc(RcImplApiNode, 1);
-        if (NULL == node) {
-            mpp_err_f("failed to create api node\n");
-            mpp_mutex_unlock(&lock);
-            return MPP_NOK;
-        }
-
-        INIT_LIST_HEAD(&node->list);
-        list_add_tail(&node->list, &mApis);
-
-        mApiCount++;
-        rc_dbg_impl("rc impl %s type %x is added\n", api->name, api->type);
-    } else {
-        node = container_of(node_api, RcImplApiNode, api);
-        rc_dbg_impl("rc impl %s type %x is updated\n", api->name, api->type);
-    }
-
-    set_node_api(node, api);
-    mpp_mutex_unlock(&lock);
-
-    return MPP_OK;
-}
-
-RcImplApi *RcImplApiService::api_get(MppCodingType type, const char *name)
-{
-    mpp_mutex_lock(&lock);
-
-    if (!mApiCount) {
-        mpp_mutex_unlock(&lock);
-        return NULL;
-    }
-
-    if (name) {
-        RcImplApiNode *pos, *n;
-
-        list_for_each_entry_safe(pos, n, &mApis, RcImplApiNode, list) {
-            if (type == pos->type &&
-                !strncmp(name, pos->name, sizeof(pos->name) - 1)) {
-                rc_dbg_impl("rc impl %s is selected\n", pos->name);
-                mpp_mutex_unlock(&lock);
-                return &pos->api;
-            }
-        }
-    }
-
-    rc_dbg_impl("failed to find rc impl %s type %x\n", name, type);
-    mpp_mutex_unlock(&lock);
-
-    return NULL;
-}
-
-MPP_RET RcImplApiService::api_get_all(RcApiBrief *brief, RK_S32 *count, RK_S32 max_count)
-{
-    RcImplApiNode *pos, *n;
-    RK_S32 cnt = 0;
-
-    mpp_mutex_lock(&lock);
-
-    list_for_each_entry_safe(pos, n, &mApis, RcImplApiNode, list) {
-        if (cnt >= max_count)
-            break;
-
-        brief[cnt++] = pos->brief;
-    }
-
-    *count = cnt;
-    mpp_mutex_unlock(&lock);
-
-    return MPP_OK;
-}
-
-MPP_RET RcImplApiService::api_get_by_type(RcApiBrief *brief, RK_S32 *count,
-                                          RK_S32 max_count, MppCodingType type)
-{
-    RcImplApiNode *pos, *n;
-    RK_S32 cnt = 0;
-
-    mpp_mutex_lock(&lock);
-
-    list_for_each_entry_safe(pos, n, &mApis, RcImplApiNode, list) {
-        if (cnt >= max_count)
-            break;
-
-        if (pos->type != type)
-            continue;
-
-        brief[cnt++] = pos->brief;
-    }
-
-    *count = cnt;
-    mpp_mutex_unlock(&lock);
-
-    return MPP_OK;
-}
-
-MPP_RET rc_api_add(const RcImplApi *api)
-{
-    return RcImplApiService::get_instance()->api_add(api);
-}
-
-MPP_RET rc_brief_get_all(RcApiQueryAll *query)
-{
-    RcApiBrief *brief;
-    RK_S32 *count;
-    RK_S32 max_count;
-
-    if (NULL == query) {
-        mpp_err_f("invalide NULL query input\n");
-        return MPP_ERR_NULL_PTR;
-    }
-
-    brief = query->brief;
-    count = &query->count;
-    max_count = query->max_count;
-
-    if (NULL == brief || max_count <= 0) {
-        mpp_err_f("invalide brief buffer %p max count %d\n", brief, max_count);
-        return MPP_NOK;
-    }
-
-    return RcImplApiService::get_instance()->api_get_all(brief, count, max_count);
-}
-
-MPP_RET rc_brief_get_by_type(RcApiQueryType *query)
-{
-    RcApiBrief *brief;
-    RK_S32 *count;
-    RK_S32 max_count;
-    MppCodingType type;
-
-    if (NULL == query) {
-        mpp_err_f("invalide NULL query input\n");
-        return MPP_ERR_NULL_PTR;
-    }
-
-    brief = query->brief;
-    count = &query->count;
-    max_count = query->max_count;
-    type = query->type;
-
-    if (NULL == brief || max_count <= 0) {
-        mpp_err_f("invalide brief buffer %p max count %d type %x\n",
-                  brief, max_count, type);
-        return MPP_NOK;
-    }
-
-    return RcImplApiService::get_instance()->api_get_by_type(brief, count, max_count, type);
-}
diff --git a/mpp/codec/rc/rc_impl.h b/mpp/codec/rc/rc_impl.h
deleted file mode 100644
index 3675895e..00000000
--- a/mpp/codec/rc/rc_impl.h
+++ /dev/null
@@ -1,71 +0,0 @@
-/*
- * Copyright 2016 Rockchip Electronics Co. LTD
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef __RC_IMPL_H__
-#define __RC_IMPL_H__
-
-#include "mpp_list.h"
-#include "mpp_rc_api.h"
-
-#define MAX_RC_API_COUNT        32
-
-#ifdef __cplusplus
-
-class RcImplApiService
-{
-private:
-    // avoid any unwanted function
-    RcImplApiService();
-    ~RcImplApiService();
-    RcImplApiService(const RcImplApiService &);
-    RcImplApiService &operator=(const RcImplApiService &);
-
-    MppMutex            lock;
-    RK_U32              mApiCount;
-
-    struct list_head    mApis;
-
-public:
-    static RcImplApiService *get_instance() {
-        static RcImplApiService instance;
-        RcImplApiService * ret;
-
-        mpp_mutex_lock(&instance.lock);
-        ret = &instance;
-        mpp_mutex_unlock(&instance.lock);
-        return ret;
-    }
-
-    MPP_RET     api_add(const RcImplApi *api);
-    RcImplApi   *api_get(MppCodingType type, const char *name);
-
-    MPP_RET     api_get_all(RcApiBrief *brief, RK_S32 *count, RK_S32 max_count);
-    MPP_RET     api_get_by_type(RcApiBrief *brief, RK_S32 *count,
-                                RK_S32 max_count, MppCodingType type);
-    MppMutex    *get_lock() {return &lock; };
-};
-
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* __RC_IMPL_H__ */
diff --git a/osal/inc/mpp_singleton.h b/osal/inc/mpp_singleton.h
index aff14c58..ea3436ed 100644
--- a/osal/inc/mpp_singleton.h
+++ b/osal/inc/mpp_singleton.h
@@ -40,7 +40,7 @@ typedef enum MppSingletonId_e {
     /* userspace system module */
     MPP_SGLN_ENC_CFG,
     MPP_SGLN_DEC_CFG,
-    MPP_SGLN_DEC_RC_API,
+    MPP_SGLN_ENC_RC_API,
 
     /* max count for start init process */
     MPP_SGLN_MAX_CNT,