diff --git a/rga_func.c b/rga_func.c
deleted file mode 100644
index aaea364..0000000
--- a/rga_func.c
+++ /dev/null
@@ -1,129 +0,0 @@
-// Copyright (c) 2021 by Rockchip Electronics Co., Ltd. All Rights Reserved.
-//
-// 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.
-
-#include <stdbool.h>
-#include "rga_func.h"
-
-int RGA_init(rga_context *rga_ctx)
-{
-    rga_ctx->rga_handle = dlopen("librga.so", RTLD_LAZY);
-    if (!rga_ctx->rga_handle)
-    {
-        printf("dlopen librga.so failed\n");
-        printf("dlopen error: %s\n", dlerror());
-        return -1;
-    }
-    rga_ctx->init_func = (FUNC_RGA_INIT)dlsym(rga_ctx->rga_handle, "c_RkRgaInit");
-    rga_ctx->deinit_func = (FUNC_RGA_DEINIT)dlsym(rga_ctx->rga_handle, "c_RkRgaDeInit");
-    rga_ctx->blit_func = (FUNC_RGA_BLIT)dlsym(rga_ctx->rga_handle, "c_RkRgaBlit");
-    rga_ctx->init_func();
-    return 0;
-}
-
-void img_resize_fast(rga_context *rga_ctx, int src_fd, int src_w, int src_h, uint64_t dst_phys, int dst_w, int dst_h)
-{
-    // printf("rga use fd, src(%dx%d) -> dst(%dx%d)\n", src_w, src_h, dst_w, dst_h);
-
-    if (rga_ctx->rga_handle)
-    {
-        int ret = 0;
-        rga_info_t src, dst;
-
-        memset(&src, 0, sizeof(rga_info_t));
-        src.fd = src_fd;
-        src.mmuFlag = 1;
-        // src.virAddr = (void *)psrc;
-
-        memset(&dst, 0, sizeof(rga_info_t));
-        dst.fd = -1;
-        dst.mmuFlag = 0;
-
-#if defined(__arm__)
-        dst.phyAddr = (void *)((uint32_t)dst_phys);
-#else
-        dst.phyAddr = (void *)dst_phys;
-#endif
-
-        dst.nn.nn_flag = 0;
-
-        rga_set_rect(&src.rect, 0, 0, src_w, src_h, src_w, src_h, RK_FORMAT_RGB_888);
-        rga_set_rect(&dst.rect, 0, 0, dst_w, dst_h, dst_w, dst_h, RK_FORMAT_RGB_888);
-
-        ret = rga_ctx->blit_func(&src, &dst, NULL);
-        if (ret)
-        {
-            printf("c_RkRgaBlit error : %s\n", strerror(errno));
-        }
-
-        return;
-    }
-    return;
-}
-
-void img_resize_slow(rga_context *rga_ctx, void *src_virt, int src_w, int src_h, void *dst_virt, int dst_w, int dst_h,
-                     int w_offset, int h_offset, RgaSURF_FORMAT color, bool add_extra_sz_w, bool add_extra_sz_h)
-{
-    // printf("rga use virtual, src(%dx%d) -> dst(%dx%d)\n", src_w, src_h, dst_w, dst_h);
-    if (rga_ctx->rga_handle)
-    {
-        int ret = 0;
-        rga_info_t src, dst;
-
-        memset(&src, 0, sizeof(rga_info_t));
-        src.fd = -1;
-        src.mmuFlag = 1;
-        src.virAddr = (void *)src_virt;
-
-        memset(&dst, 0, sizeof(rga_info_t));
-        dst.fd = -1;
-        dst.mmuFlag = 1;
-        dst.virAddr = dst_virt;
-
-        dst.nn.nn_flag = 0;
-        // printf("input to rga para, w_offset: %d, h_offset: %d, dst_w: %d, dst_h: %d\n",
-        //                             w_offset, h_offset, dst_w, dst_h);
-
-        rga_set_rect(&src.rect, 0, 0, src_w, src_h, src_w, src_h, RK_FORMAT_RGB_888);
-        int src_w = dst_w + 2*w_offset;
-        int src_h = dst_h + 2*h_offset;
-        if (add_extra_sz_w){
-            src_w += 1;
-            // printf("Adding extra sz w: %d\n", src_w);
-        } 
-        else if (add_extra_sz_h){
-            src_h += 1;
-            // printf("Adding extra sz h: %d\n", src_h);
-        }
-
-        //rga_set_rect(&dst.rect, w_offset, h_offset, dst_w, dst_h, src_w, dst_h + 2*h_offset, color);
-        rga_set_rect(&dst.rect, w_offset, h_offset, dst_w, dst_h, src_w, src_h, color);
-
-        ret = rga_ctx->blit_func(&src, &dst, NULL);
-        if (ret){
-            printf("c_RkRgaBlit error : %s\n", strerror(errno));
-        }
-
-        return;
-    }
-    return;
-}
-
-int RGA_deinit(rga_context *rga_ctx)
-{
-    if(rga_ctx->rga_handle)
-    {
-        dlclose(rga_ctx->rga_handle);
-        rga_ctx->rga_handle = NULL;
-    }
-}
\ No newline at end of file