在Python AutoFocus Gphoto2中设置Gphoto2区域

Question

我正在尝试为我的Nikon D7200设置自动对焦区域

我检索了config对象，并在其中看到了这个条目：

{
          "idx": "6,6,0,0",
          "ro": 0,
          "name": "changeafarea",
          "label": "Set Nikon Autofocus area",
          "type": 2,
          "typestr": "GP_WIDGET_TEXT",
          "value": "0x0"
 },

我不太确定要将哪些参数传递到gp_camera_set_single_config()

根据代码库，我需要通过gp_camera_set_single_config, ($self, name, widget, context)

为了将自动对焦的中心更改为像素100x100 (宽度x高度)，我尝试了以下命令，但实际上没有得到任何结果。不知道有没有人碰巧知道怎么通过这个对讲机？

import gphoto2 as gp

# setup
camera = gp.check_result(gp.gp_camera_new())
context = None
gp.check_result(gp.gp_camera_init(camera, self.context))

# Method 1
gp.gp_camera_set_single_config(camera, 'changefarea', '100x100')

# Method 2
gp.gp_camera_set_single_config(camera, '--changefarea', '100x100')

# Method 3
gp.gp_camera_set_single_config(camera, 'changefarea', {
          "idx": "6,6,0,0",
          "ro": 0,
          "name": "changeafarea",
          "label": "Set Nikon Autofocus area",
          "type": 2,
          "typestr": "GP_WIDGET_TEXT",
          "value": "100x100"
 })

# Method 4
gp.gp_camera_set_single_config(camera, '--changefarea', {
          "idx": "6,6,0,0",
          "ro": 0,
          "name": "changeafarea",
          "label": "Set Nikon Autofocus area",
          "type": 2,
          "typestr": "GP_WIDGET_TEXT",
          "value": "100x100"
 })

更新#1:

为了设置配置，您必须首先使用gp.gp_camera_get_single_config(camera, 'changefarea')获得配置。仍然不知道该通过什么对立面。

Answer 1

下面是为我工作的东西，还不确定要传递哪些值，当我发现时会更新：

import gphoto2 as gp

camera = gp.check_result(gp.gp_camera_new())
context = None
gp.check_result(gp.gp_camera_init(camera, self.context))

config_name =  "changeafarea"
value = "100x100"  # in my code I have it linked up to PyQt5 window where I am clicking around the live-view and the pixel value of where I clicked is being passed back and formatted into this string format

while True:
          # wait for config widget
          config_widget = gp.gp_camera_get_single_config(self.camera, config_name)
          if config_widget[1] is not None:
              break
config_widget = config_widget[1]
config_set_response = gp.gp_widget_set_value(config_widget, value)
print('set response:', gp.gp_widget_get_value(config_widget))
gp.gp_camera_set_single_config(camera, config_name, config_widget)