Drawing Text or Strings on Camera Frames with RockRGA in rkipc

• pdoanthuannb96

  Posts: 18

  Joined: 2024-09-02 16:40

  2024-11-22 14:39

  I am currently modifying the rkipc app and working on adding the ability to draw text or strings on camera frames. There is a function in the app (path: video/video.c) that draws lines to create a bounding box:
  

  Code: Select all

  static int rga_nv12_border(rga_buffer_t buf, int x, int y, int width, int height, int line_pixel,
                             int color) {
  	im_rect rect_up = {x, y, width, line_pixel};
  	im_rect rect_buttom = {x, y + height - line_pixel, width, line_pixel};
  	im_rect rect_left = {x, y, line_pixel, height};
  	im_rect rect_right = {x + width - line_pixel, y, line_pixel, height};
  	IM_STATUS STATUS = imfill(buf, rect_up, color);
  	STATUS |= imfill(buf, rect_buttom, color);
  	STATUS |= imfill(buf, rect_left, color);
  	STATUS |= imfill(buf, rect_right, color);
  	return STATUS == IM_STATUS_SUCCESS ? 0 : 1;
  }

  imfill function on rockrga:
  

  Code: Select all

  /*
   * fill/reset/draw
   *
   * @param src
   * @param dst
   * @param rect
   * @param color
   * @param sync
   *      wait until operation complete
   *
   * @returns success or else negative error code.
   */
  #undef imfill
  IM_API IM_STATUS imfill(rga_buffer_t dst, im_rect rect, int color, int sync = 1, int *release_fence_fd = NULL);

  I want to use a similar approach to draw text or characters on the camera frame. Has anyone worked with RockRGA to render text or strings on the frame in a similar manner?
  Thank you for your attention, and any information would be greatly appreciated!

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