# -- coding: utf-8 --

import sys
import copy
import msvcrt

from ctypes import *

sys.path.append("../MvImport")
from MvCameraControl_class import *

from ctypes import WINFUNCTYPE
winfun_ctype = WINFUNCTYPE

stEventInfo = POINTER(MV_EVENT_OUT_INFO)
pData = POINTER(c_ubyte)
EventInfoCallBack = winfun_ctype(None, stEventInfo, c_void_p)

def event_callback(pEventInfo, pUser):
    stPEventInfo = cast(pEventInfo, POINTER(MV_EVENT_OUT_INFO)).contents
    nBlockId = stPEventInfo.nBlockIdHigh
    nBlockId = (nBlockId << 32) + stPEventInfo.nBlockIdLow
    nTimestamp = stPEventInfo.nTimestampHigh
    nTimestamp = (nTimestamp << 32) + stPEventInfo.nTimestampLow
    if stPEventInfo:
        print ("EventName[%s], EventId[%u], BlockId[%d], Timestamp[%d]" % (stPEventInfo.EventName, stPEventInfo.nEventID, nBlockId, nTimestamp))

CALL_BACK_FUN = EventInfoCallBack(event_callback)

if __name__ == "__main__":

    deviceList = MV_CC_DEVICE_INFO_LIST()
    tlayerType = MV_GIGE_DEVICE | MV_USB_DEVICE
    
    # ch:枚举设备 | en:Enum device
    ret = MvCamera.MV_CC_EnumDevices(tlayerType, deviceList)
    if ret != 0:
        print ("enum devices fail! ret[0x%x]" % ret)
        sys.exit()

    if deviceList.nDeviceNum == 0:
        print ("find no device!")
        sys.exit()

    print ("find %d devices!" % deviceList.nDeviceNum)

    for i in range(0, deviceList.nDeviceNum):
        mvcc_dev_info = cast(deviceList.pDeviceInfo[i], POINTER(MV_CC_DEVICE_INFO)).contents
        if mvcc_dev_info.nTLayerType == MV_GIGE_DEVICE:
            print ("\ngige device: [%d]" % i)
            strModeName = ""
            for per in mvcc_dev_info.SpecialInfo.stGigEInfo.chModelName:
                strModeName = strModeName + chr(per)
            print ("device model name: %s" % strModeName)

            nip1 = ((mvcc_dev_info.SpecialInfo.stGigEInfo.nCurrentIp & 0xff000000) >> 24)
            nip2 = ((mvcc_dev_info.SpecialInfo.stGigEInfo.nCurrentIp & 0x00ff0000) >> 16)
            nip3 = ((mvcc_dev_info.SpecialInfo.stGigEInfo.nCurrentIp & 0x0000ff00) >> 8)
            nip4 = (mvcc_dev_info.SpecialInfo.stGigEInfo.nCurrentIp & 0x000000ff)
            print ("current ip: %d.%d.%d.%d\n" % (nip1, nip2, nip3, nip4))
        elif mvcc_dev_info.nTLayerType == MV_USB_DEVICE:
            print ("\nu3v device: [%d]" % i)
            strModeName = ""
            for per in mvcc_dev_info.SpecialInfo.stUsb3VInfo.chModelName:
                if per == 0:
                    break
                strModeName = strModeName + chr(per)
            print ("device model name: %s" % strModeName)

            strSerialNumber = ""
            for per in mvcc_dev_info.SpecialInfo.stUsb3VInfo.chSerialNumber:
                if per == 0:
                    break
                strSerialNumber = strSerialNumber + chr(per)
            print ("user serial number: %s" % strSerialNumber)

    nConnectionNum = input("please input the number of the device to connect:")

    if int(nConnectionNum) >= deviceList.nDeviceNum:
        print ("intput error!")
        sys.exit()

    # ch:创建相机实例 | en:Creat Camera Object
    cam = MvCamera()

    # ch:选择设备并创建句柄 | en:Select device and create handle
    stDeviceList = cast(deviceList.pDeviceInfo[int(nConnectionNum)], POINTER(MV_CC_DEVICE_INFO)).contents

    ret = cam.MV_CC_CreateHandle(stDeviceList)
    if ret != 0:
        print ("create handle fail! ret[0x%x]" % ret)
        sys.exit()

    # ch:打开设备 | en:Open device
    ret = cam.MV_CC_OpenDevice(MV_ACCESS_Exclusive, 0)
    if ret != 0:
        print ("open device fail! ret[0x%x]" % ret)
        sys.exit()
    
    # ch:探测网络最佳包大小(只对GigE相机有效) | en:Detection network optimal package size(It only works for the GigE camera)
    if stDeviceList.nTLayerType == MV_GIGE_DEVICE:
        nPacketSize = cam.MV_CC_GetOptimalPacketSize()
        if int(nPacketSize) > 0:
            ret = cam.MV_CC_SetIntValue("GevSCPSPacketSize",nPacketSize)
            if ret != 0:
                print ("Warning: Set Packet Size fail! ret[0x%x]" % ret)
        else:
            print ("Warning: Get Packet Size fail! ret[0x%x]" % nPacketSize)

    # ch:设置触发模式为off | en:Set trigger mode as off
    ret = cam.MV_CC_SetEnumValue("TriggerMode", MV_TRIGGER_MODE_OFF)
    if ret != 0:
        print ("set trigger mode fail! ret[0x%x]" % ret)
        sys.exit()

    # ch:开启Event | en:Set Event of ExposureEnd On
    ret = cam.MV_CC_SetEnumValueByString("EventSelector","ExposureEnd")
    if ret != 0:
        print ("set enum value by string fail! ret[0x%x]" % ret)
        sys.exit()

    ret = cam.MV_CC_SetEnumValueByString("EventNotification","On")
    if ret != 0:
        print ("set enum value by string fail! ret[0x%x]" % ret)
        sys.exit()

    # ch:注册事件回调 | en:Register event callback
    ret = cam.MV_CC_RegisterEventCallBackEx("ExposureEnd", CALL_BACK_FUN,None)
    if ret != 0:
        print ("register event callback fail! ret [0x%x]" % ret)
        sys.exit()

    # ch:开始取流 | en:Start grab image
    cam.MV_CC_StartGrabbing()
    if ret != 0:
        print ("start grabbing fail! ret[0x%x]" % ret)
        sys.exit()

    print ("press a key to stop grabbing.")
    msvcrt.getch()

    # ch:停止取流 | en:Stop grab image
    ret = cam.MV_CC_StopGrabbing()
    if ret != 0:
        print ("stop grabbing fail! ret[0x%x]" % ret)
        sys.exit()

    # ch:关闭设备 | Close device
    ret = cam.MV_CC_CloseDevice()
    if ret != 0:
        print ("close deivce fail! ret[0x%x]" % ret)
        sys.exit()

    # ch:销毁句柄 | Destroy handle
    ret = cam.MV_CC_DestroyHandle()
    if ret != 0:
        print ("destroy handle fail! ret[0x%x]" % ret)
        sys.exit()
