diff --git a/src/hal/plus/ak_vi.h b/src/hal/plus/ak_vi.h
new file mode 100644
index 0000000..595f9e1
--- /dev/null
+++ b/src/hal/plus/ak_vi.h
@@ -0,0 +1,82 @@
+#pragma once
+
+#include "ak_common.h"
+
+#define CVI_VI_CHN_NUM 2
+
+typedef struct {
+    int x;
+    int y;
+    int width;
+    int height;
+} ak_vi_crop;
+
+typedef struct {
+    int width;
+    int height;
+    int maxWidth;
+    int maxHeight;
+} ak_vi_res;
+
+typedef struct {
+    ak_vi_crop capt;
+    ak_vi_res dest[CVI_VI_CHN_NUM];
+} ak_vi_cnf;
+
+typedef struct {
+    void *handle;
+
+    int   (*fnDisableDevice)(void *device);
+    void* (*fnEnableDevice)(int device);
+    int   (*fnGetDeviceConfig)(void *device, ak_vi_cnf *config);
+    int   (*fnSetDeviceConfig)(void *device, ak_vi_cnf *config);
+    int   (*fnSetDeviceFlipMirror)(void *device, int flipOn, int mirrorOn);
+    int   (*fnSetDeviceMode)(void *device, int nightOn);
+    int   (*fnStartDevice)(void *device);
+    int   (*fnStopDevice)(void *device);
+} ak_vi_impl;
+
+static int ak_vi_load(ak_vi_impl *vi_lib) {
+    if (!(vi_lib->handle = dlopen("libplat_vi.so", RTLD_LAZY | RTLD_GLOBAL)))
+        HAL_ERROR("ak_vi", "Failed to load library!\nError: %s\n", dlerror());
+
+    if (!(vi_lib->fnDisableDevice = (int(*)(void* device))
+        hal_symbol_load("ak_vi", vi_lib->handle, "ak_venc_close")))
+        return EXIT_FAILURE;
+
+    if (!(vi_lib->fnEnableDevice = (void*(*)(int device))
+        hal_symbol_load("ak_vi", vi_lib->handle, "ak_vi_open")))
+        return EXIT_FAILURE;
+
+    if (!(vi_lib->fnGetDeviceConfig = (int(*)(void* device, ak_vi_cnf *config))
+        hal_symbol_load("ak_vi", vi_lib->handle, "ak_vi_get_channel_attr")))
+        return EXIT_FAILURE;
+
+    if (!(vi_lib->fnSetDeviceConfig = (int(*)(void* device, ak_vi_cnf *config))
+        hal_symbol_load("ak_vi", vi_lib->handle, "ak_vi_set_channel_attr")))
+        return EXIT_FAILURE;
+
+    if (!(vi_lib->fnSetDeviceFlipMirror = (int(*)(void *device, int flipOn, int mirrorOn))
+        hal_symbol_load("ak_vi", vi_lib->handle, "ak_vi_switch_mode")))
+        return EXIT_FAILURE;
+
+    if (!(vi_lib->fnSetDeviceMode = (int(*)(void *device, int nightOn))
+        hal_symbol_load("ak_vi", vi_lib->handle, "ak_vi_switch_mode")))
+        return EXIT_FAILURE;
+
+    if (!(vi_lib->fnStartDevice = (int(*)(void *device))
+        hal_symbol_load("ak_vi", vi_lib->handle, "ak_vi_capture_on")))
+        return EXIT_FAILURE;
+
+    if (!(vi_lib->fnStopDevice = (int(*)(void *device))
+        hal_symbol_load("ak_vi", vi_lib->handle, "ak_vi_capture_off")))
+        return EXIT_FAILURE;
+
+    return EXIT_SUCCESS;
+}
+
+static void ak_vi_unload(ak_vi_impl *vi_lib) {
+    if (vi_lib->handle) dlclose(vi_lib->handle);
+    vi_lib->handle = NULL;
+    memset(vi_lib, 0, sizeof(*vi_lib));
+}
\ No newline at end of file