1、操作遥控器按钮，psdk进程通过socket发送命令给相机进程 来控制高光谱采集系统；

2、通过FFmpeg采集摄像头视频流并编码为h264，利用psdk推流到遥控器；

sample/api_sample/utils/util_time.c

@@ -0,0 +1,69 @@
+/**
+ ********************************************************************
+ * @file    psdk_util_time.c
+ * @version V1.0.0
+ * @date    2019/01/01
+ * @brief
+ *
+ * @copyright (c) 2017-2018 DJI. All rights reserved.
+ *
+ * All information contained herein is, and remains, the property of DJI.
+ * The intellectual and technical concepts contained herein are proprietary
+ * to DJI and may be covered by U.S. and foreign patents, patents in process,
+ * and protected by trade secret or copyright law.  Dissemination of this
+ * information, including but not limited to data and other proprietary
+ * material(s) incorporated within the information, in any form, is strictly
+ * prohibited without the express written consent of DJI.
+ *
+ * If you receive this source code without DJI’s authorization, you may not
+ * further disseminate the information, and you must immediately remove the
+ * source code and notify DJI of its removal. DJI reserves the right to pursue
+ * legal actions against you for any loss(es) or damage(s) caused by your
+ * failure to do so.
+ *
+ *********************************************************************
+ */
+
+
+/* Includes ------------------------------------------------------------------*/
+#include "util_time.h"
+#include <sys/resource.h>
+#include <time.h>
+
+/* Private constants ---------------------------------------------------------*/
+
+
+/* Private types -------------------------------------------------------------*/
+
+
+/* Private functions declaration ---------------------------------------------*/
+
+
+/* Private values ------------------------------------------------------------*/
+
+
+/* Exported functions definition ---------------------------------------------*/
+#if PSDK_ARCH_SYS_LINUX
+T_PsdkRunTimeStamps PsdkUtilTime_GetRunTimeStamps(void)
+{
+    T_PsdkRunTimeStamps timeStamps;
+    struct rusage rusage;
+    struct timespec ts;
+
+    clock_gettime(CLOCK_MONOTONIC, &ts);//系统的启动时间，不能被设置:https://blog.csdn.net/liu44235/article/details/37692635
+    timeStamps.realUsec = (uint64_t) ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
+
+    getrusage(RUSAGE_SELF, &rusage);
+    timeStamps.userUsec =
+        (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
+    timeStamps.sysUsec =
+        (rusage.ru_stime.tv_sec * 1000000LL) + rusage.ru_stime.tv_usec;
+
+    return timeStamps;
+}
+#endif
+
+/* Private functions definition-----------------------------------------------*/
+
+
+/****************** (C) COPYRIGHT DJI Innovations *****END OF FILE****/