Added OpenALPR Python bindings

bindings/python/openalpr.py

@@ -0,0 +1,91 @@
+import ctypes
+import json
+import platform
+
+class Alpr():
+    def __init__(self, country, config_file, runtime_dir):
+
+        # Load the .dll for Windows and the .so for Unix-based
+        if platform.system().lower().find("windows") != -1:
+            self._openalprpy_lib = ctypes.cdll.LoadLibrary("openalprpy.dll")
+        else:
+            self._openalprpy_lib = ctypes.cdll.LoadLibrary("libopenalprpy.so")
+
+
+        self._initialize_func = self._openalprpy_lib.initialize
+        self._initialize_func.argtypes = [ctypes.c_char_p, ctypes.c_char_p, ctypes.c_char_p]
+
+        self._dispose_func = self._openalprpy_lib.dispose
+
+        self._is_loaded_func = self._openalprpy_lib.isLoaded
+        self._is_loaded_func.restype = ctypes.c_bool
+
+        self._recognize_file_func = self._openalprpy_lib.recognizeFile
+        self._recognize_file_func.restype = ctypes.c_void_p
+        self._recognize_file_func.argtypes = [ctypes.c_char_p]
+
+        self._recognize_array_func = self._openalprpy_lib.recognizeArray
+        self._recognize_array_func.restype = ctypes.c_void_p
+        self._recognize_array_func.argtypes = [ctypes.POINTER(ctypes.c_ubyte), ctypes.c_uint]
+
+        self._free_json_mem_func = self._openalprpy_lib.freeJsonMem
+
+
+        self._set_default_region_func = self._openalprpy_lib.setDefaultRegion
+        self._set_default_region_func.argtypes = [ctypes.c_char_p]
+
+        self._set_detect_region_func = self._openalprpy_lib.setDetectRegion
+        self._set_detect_region_func.argtypes = [ctypes.c_bool]
+
+
+        self._set_top_n_func = self._openalprpy_lib.setTopN
+        self._set_top_n_func.argtypes = [ctypes.c_int]
+
+        self._get_version_func = self._openalprpy_lib.getVersion
+        self._get_version_func.restype = ctypes.c_void_p
+
+        self._initialize_func(country, config_file, runtime_dir)
+
+
+    def unload(self):
+        self._openalprpy_lib.dispose()
+
+    def is_loaded(self):
+        return self._is_loaded_func()
+
+    def recognize_file(self, file_path):
+        ptr = self._recognize_file_func(file_path)
+        json_data = ctypes.cast(ptr, ctypes.c_char_p).value
+        response_obj = json.loads(json_data)
+        self._free_json_mem_func(ptr)
+
+        return response_obj
+
+    def recognize_array(self, byte_array):
+
+        pb = ctypes.cast(byte_array, ctypes.POINTER(ctypes.c_ubyte))
+        ptr = self._recognize_array_func(pb, len(byte_array))
+        json_data = ctypes.cast(ptr, ctypes.c_char_p).value
+        response_obj = json.loads(json_data)
+        self._free_json_mem_func(ptr)
+
+        return response_obj
+
+    def get_version(self):
+
+        ptr = self._get_version_func()
+        version_number = ctypes.cast(ptr, ctypes.c_char_p).value
+        self._free_json_mem_func(ptr)
+
+        return version_number
+
+    def set_top_n(self, topn):
+        self._set_top_n_func(topn)
+
+    def set_default_region(self, region):
+        self._set_default_region_func(region)
+
+    def set_detect_region(self, enabled):
+        self._set_detect_region_func(enabled)
+
+