{
  "preprocess": [
    {
      "input": {
        "index": 0
      },
      "decode_para": {
        "out_pixel_format": "YUV420SP"
      },
      "dvpp_process": {
        "op_name": "resize",
        "out_width": 224,
        "out_height": 224
      },
      "sample of dvpp_process content": [
        {
          "op_name": "resize",
          "out_width": 224,
          "out_height": 224
        },
        {
          "op_name": "crop",
          "crop_type": "offset",
          "crop_left": 10,
          "crop_top": 10,
          "crop_right": 100,
          "crop_bottom": 200,
          "out_width": 224,
          "out_height": 224
        },
        {
          "op_name": "crop",
          "crop_type": "centre",
          "crop_width": 100,
          "crop_height": 100,
          "out_width": 224,
          "out_height": 224
        },
        {
          "op_name": "crop_and_paste",
          "crop_type": "offset",
          "crop_left": 10,
          "crop_top": 10,
          "crop_right": 100,
          "crop_bottom": 200,
          "paste_left": 10,
          "paste_top": 10,
          "paste_right": 100,
          "paste_bottom": 200,
          "out_width": 224,
          "out_height": 224
        },
        {
          "op_name": "crop_and_paste",
          "crop_type": "centre",
          "crop_width": 100,
          "crop_height": 100,
          "paste_left": 10,
          "paste_top": 10,
          "paste_right": 100,
          "paste_bottom": 200,
          "out_width": 224,
          "out_height": 224
        }
      ]
    }
  ]
}