Camera: Add file descriptor getting API

Add file descriptor getting API to control camera device directly by using ioctl.
sonydevworld · Feb 6, 2023 · 31cec1f · 31cec1f
1 parent fd6a7d2
commit 31cec1f
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/Arduino15/packages/SPRESENSE/hardware/spresense/1.0.0/libraries/Camera/Camera.h b/Arduino15/packages/SPRESENSE/hardware/spresense/1.0.0/libraries/Camera/Camera.h
@@ -587,6 +587,17 @@ class CameraClass {
    */
   static CameraClass getInstance();
 
+  /**
+   * @brief Get the file descriptor of camera device.
+   * @details [en] Get the file descriptor of camera device.<BR>
+   *          [ja] カメラデバイスのファイルディスクリプタを取得する。
+   * @return [en] The file descriptor of camera device.
+   *              Return CAM_ERR_NO_DEVICE if begin() methods is not executed.<BR>
+   *         [ja] カメラデバイスのファイルディスクリプタ。
+   *              begin()メソッドが実行されていない場合は、CAM_ERR_NO_DEVICEを返す。
+   */
+  int getFd() { return (video_fd < 0) ? CAM_ERR_NO_DEVICE : video_fd; }
+
   /**
    * @brief Initialize CameraClass instance.
    * @details [en] Initialize CameraClass Instance. This method must be called before