airmtp.py 文件源码

def getMtpDeviceInfo():
    mtpTcpCmdResult = mtpwifi.execMtpOp(g.socketPrimary, MTP_OP_GetDeviceInfo)  
    mtpDeviceInfo = parseMtpDeviceInfo(mtpTcpCmdResult.dataReceived)
    if g.mtpDeviceInfo:
        # this is a retry invocation. make sure we're talking with the same camera as before
        if mtpDeviceInfo != g.mtpDeviceInfo:
            applog_e("Discovered different camera during retry invocation. Orig camera was Model \"{:s}\", S/N \":{:s}\", New camera is \"{:s}\", S/N \":{:s}\"".format(\
                g.mtpDeviceInfo.modelStr, g.mtpDeviceInfo.serialNumberStr, mtpDeviceInfo.modelStr, mtpDeviceInfo.serialNumberStr))
            sys.exit(ERRNO_DIFFERENT_CAMREA_DURING_RETRY)

    g.mtpDeviceInfo = mtpDeviceInfo
    applog_d(g.mtpDeviceInfo)

    #
    # determine make of camera for use in any make-specific logic in our app
    #
    makeStrUpper = g.mtpDeviceInfo.manufacturerStr.upper()  
    if makeStrUpper.find("NIKON") != -1:
        g.cameraMake = CAMERA_MAKE_NIKON
    elif makeStrUpper.find("CANON") != -1:
        g.cameraMake = CAMERA_MAKE_CANON
    elif makeStrUpper.find("SONY") != -1:
        g.cameraMake = CAMERA_MAKE_SONY
    else:
        g.cameraMake = CAMERA_MAKE_UNDETERMINED

    #
    # set any program options/behavior that is specific to the make of the camera 
    #
    processCameraMakeDetermination()


    #
    # build path (dir + rootfilename) that will serve as the template for all metadata
    # files we create and store locally. this name needs to be unique to the camera
    # attached and locatable on future invocations, so we use a combination of the camera
    # model and serial number
    #   
    g.cameraLocalMetadataPathAndRootName = os.path.join(g.appDataDir, "{:s}-SN{:s}".format(g.mtpDeviceInfo.modelStr, g.mtpDeviceInfo.serialNumberStr))

    applog_i("Camera Model \"{:s}\", S/N \"{:s}\"".format(g.mtpDeviceInfo.modelStr, g.mtpDeviceInfo.serialNumberStr))


#
# gets the slot index (1 or 2) from an MTP storage ID
#