from ximea import xiapi
import numpy as np

cam = xiapi.Camera()
cam.open_device()



# self.cam.set_width(1392)
# cam.set_offsetX(272)
#
# cam.set_height(302)
# cam.set_offsetY(338)


# Serial number = 0031
cam.set_width(1392)
cam.set_offsetX(272)

cam.set_height(302)
cam.set_offsetY(406)

framerate=20

cam.set_framerate(framerate)


# cam.set_aeag_roi_offset_x(self.config_file_object.start_column)
# cam.set_aeag_roi_offset_y(self.config_file_object.start_row)
# cam.set_aeag_roi_height(self.config_file_object.end_row - self.config_file_object.start_row)
# cam.set_aeag_roi_width(self.config_file_object.end_column - self.config_file_object.start_column)


img = xiapi.Image()

# 使用相机自动曝光功能得到初始曝光值
cam.enable_aeag()   # 开启自动曝光
cam.start_acquisition()
for i in range(10):
    cam.get_image(img)  # get data and pass them from camera to img
cam.stop_acquisition()
cam.disable_aeag()  # 关闭自动曝光


# 根据自动曝光所得初始曝光值，循环迭代获取不过曝的曝光值
img.get_image_data_numpy()
image_raw_numpy = img.get_image_data_numpy()
while image_raw_numpy.max() >= 2730:
    cam.set_exposure(int(0.9 * cam.get_exposure()))

    cam.start_acquisition()
    cam.get_image(img)  # get data and pass them from camera to img
    cam.stop_acquisition()
    image_raw_numpy = img.get_image_data_numpy()

# 如果因为光线不足曝光值达到了最大，就将曝光反馈变量设置为1
if cam.get_exposure() > int(1 / framerate * 10**6):
    cam.set_exposure(int(1 / framerate * 10**6))
    autoexposure_feedback = 1
else:
    cam.set_exposure(cam.get_exposure())

haha=cam.get_exposure()