diff --git a/include/exynos_v4l2.h b/include/exynos_v4l2.h
index ed26397..134ea93 100644
--- a/include/exynos_v4l2.h
+++ b/include/exynos_v4l2.h
@@ -94,6 +94,8 @@ int exynos_v4l2_s_parm(int fd, struct v4l2_streamparm *streamparm);
 int exynos_v4l2_g_ext_ctrl(int fd, struct v4l2_ext_controls *ctrl);
 /*! \ingroup exynos_v4l2 */
 int exynos_v4l2_s_ext_ctrl(int fd, struct v4l2_ext_controls *ctrl);
+/*! \ingroup exynos_v4l2 */
+int exynos_v4l2_prepare(int fd, struct v4l2_buffer *buf);
 
 /* V4L2_SUBDEV */
 #include <linux/v4l2-subdev.h>
diff --git a/libv4l2/exynos_v4l2.c b/libv4l2/exynos_v4l2.c
index 1937c0f..d7bb33d 100644
--- a/libv4l2/exynos_v4l2.c
+++ b/libv4l2/exynos_v4l2.c
@@ -866,3 +866,28 @@ int exynos_v4l2_s_ext_ctrl(int fd, struct v4l2_ext_controls *ctrl)
 
     return ret;
 }
+
+int exynos_v4l2_prepare(int fd, struct v4l2_buffer *buf)
+{
+    int ret = -1;
+
+    Exynos_v4l2_In();
+
+    if (fd < 0) {
+        ALOGE("%s: invalid fd: %d", __func__, fd);
+        return ret;
+    }
+
+    if (!buf) {
+        ALOGE("%s: buf is NULL", __func__);
+        return ret;
+    }
+
+    ret = ioctl(fd, VIDIOC_PREPARE_BUF, buf);
+    if (ret)
+        ALOGE("failed to ioctl: VIDIOC_PREPARE_BUF (%d - %s)", errno, strerror(errno));
+
+    Exynos_v4l2_Out();
+
+    return ret;
+}