First version.

escapi.py

@@ -0,0 +1,125 @@
+"""
+A simple python wrapper around escapi
+
+Usage:
+
+from camera import Device
+
+device = Deveice.connect(0, 500, 500)
+image = device.get_image()
+"""
+
+import os
+import platform
+import sys
+from ctypes import *
+from PIL import Image
+import numpy as np
+import cv2
+
+def resolve(name):
+    f = os.path.join(os.path.dirname(__file__), name)
+    return f
+
+
+class CAPTURE_PROPETIES:
+    CAPTURE_BRIGHTNESS = 1,
+    CAPTURE_CONTRAST = 2,
+    CAPTURE_HUE = 3,
+    CAPTURE_SATURATION = 4,
+    CAPTURE_SHARPNESS = 5,
+    CAPTURE_GAMMA = 6,
+    CAPTURE_COLORENABLE = 7,
+    CAPTURE_WHITEBALANCE = 8,
+    CAPTURE_BACKLIGHTCOMPENSATION = 9,
+    CAPTURE_GAIN = 10,
+    CAPTURE_PAN = 11,
+    CAPTURE_TILT = 12,
+    CAPTURE_ROLL = 13,
+    CAPTURE_ZOOM = 14,
+    CAPTURE_EXPOSURE = 15,
+    CAPTURE_IRIS = 16,
+    CAPTURE_FOCUS = 17,
+    CAPTURE_PROP_MAX = 18,
+
+
+class SimpleCapParms(Structure):
+    _fields_ = [
+        ("buffer", POINTER(c_int)),
+        ("width", c_int),
+        ("height", c_int),
+        ("fps", c_int),
+    ]
+
+
+lib = None
+
+
+def init():
+    global lib
+    if platform.architecture()[0] == '32bit':
+        dll_path = resolve(os.path.join("escapi", "escapi_x86.dll"))
+        lib = cdll.LoadLibrary(dll_path)
+    else:
+        dll_path = resolve(os.path.join("escapi", "escapi_x64.dll"))
+        lib = cdll.LoadLibrary(dll_path)
+    if lib is None or lib.ESCAPIVersion() != 0xfff001:
+        print("Invalid ESCAPI DLL found.")
+        sys.exit(1)
+    lib.initCapture.argtypes = [c_int, POINTER(SimpleCapParms)]
+    lib.initCapture.restype = c_int
+    lib.initCOM()
+
+def count_capture_devices():
+    return lib.countCaptureDevices()
+
+def device_name(device):
+    """
+    Get the device name for the given device
+    :param device: The number of the device
+    :return: The name of the device
+    """
+    namearry = (c_char * 256)()
+    lib.getCaptureDeviceName(device, namearry, 256)
+    camearaname = namearry.value
+    return camearaname
+
+def init_camera(device, width, height, fps):
+    global devices
+    array = (width * height * c_int)()
+    options = SimpleCapParms()
+    options.width = width
+    options.height = height
+    options.fps = fps
+    options.buffer = array
+    lib.initCapture(device, byref(options))
+    return array
+
+def do_capture(device):
+    lib.doCapture(device)
+
+def is_capture_done(device):
+    return lib.isCaptureDone(device)
+
+def read(device, width, height, array):
+    if is_capture_done(device):
+        img = Image.frombuffer('RGBA', (width, height), array, 'raw', 'BGRA', 0, 1)
+        img = np.array(img)
+        img = cv2.cvtColor(img, cv2.COLOR_RGBA2BGR);
+        return img
+    else:
+        return None
+
+def get_image(device, width, height, array):
+    lib.doCapture(device)
+
+    while lib.isCaptureDone(device) == 0:
+        pass
+
+    img = Image.frombuffer('RGBA', (width, height), array, 'raw', 'BGRA', 0, 0)
+    img = np.array(img)
+    img = cv2.cvtColor(img, cv2.COLOR_RGB2BGR);
+    return img
+
+def deinit_camera(device):
+    lib.deinitCapture(device)