def meta_free_func(data, user_data):
user_meta = pyds.glist_get_nvds_user_meta(data)
srcmeta = pyds.glist_get_nvds_event_msg_meta(user_meta.user_meta_data)
# pyds.free_buffer takes C address of a buffer and frees the memory
# It's a NOP if the address is NULL
pyds.free_buffer(srcmeta.ts)
pyds.free_buffer(srcmeta.sensorStr)
if (srcmeta.objSignature.size > 0):
pyds.free_buffer(srcmeta.objSignature.signature)
srcmeta.objSignature.size = 0
if (srcmeta.extMsgSize > 0):
if (srcmeta.objType == pyds.NvDsObjectType.NVDS_OBJECT_TYPE_VEHICLE):
obj = pyds.glist_get_nvds_vehicle_object(srcmeta.extMsg)
pyds.free_buffer(obj.type)
pyds.free_buffer(obj.color)
pyds.free_buffer(obj.make)
pyds.free_buffer(obj.model)
pyds.free_buffer(obj.license)
pyds.free_buffer(obj.region)
if (srcmeta.objType == pyds.NvDsObjectType.NVDS_OBJECT_TYPE_PERSON):
obj = pyds.glist_get_nvds_person_object(srcmeta.extMsg)
pyds.free_buffer(obj.gender)
pyds.free_buffer(obj.cap)
pyds.free_buffer(obj.hair)
pyds.free_buffer(obj.apparel)
pyds.free_gbuffer(srcmeta.extMsg)
srcmeta.extMsgSize = 0
def meta_free_func(data, user_data):
logging.debug("meta_free_func: BEGIN")
user_meta = pyds.NvDsUserMeta.cast(data)
srcmeta = pyds.NvDsEventMsgMeta.cast(user_meta.user_meta_data)
# pyds.free_buffer takes C address of a buffer and frees the memory
# It's a NOP if the address is NULL
pyds.free_buffer(srcmeta.ts)
pyds.free_buffer(srcmeta.sensorStr)
if srcmeta.objSignature.size > 0:
pyds.free_buffer(srcmeta.objSignature.signature)
srcmeta.objSignature.size = 0
if srcmeta.extMsgSize > 0:
if srcmeta.objType == pyds.NvDsObjectType.NVDS_OBJECT_TYPE_VEHICLE:
obj = pyds.NvDsVehicleObject.cast(srcmeta.extMsg)
pyds.free_buffer(obj.type)
pyds.free_buffer(obj.color)
pyds.free_buffer(obj.make)
pyds.free_buffer(obj.model)
pyds.free_buffer(obj.license)
pyds.free_buffer(obj.region)
if srcmeta.objType == pyds.NvDsObjectType.NVDS_OBJECT_TYPE_PERSON:
obj = pyds.NvDsPersonObject.cast(srcmeta.extMsg)
pyds.free_buffer(obj.gender)
pyds.free_buffer(obj.cap)
pyds.free_buffer(obj.hair)
pyds.free_buffer(obj.apparel)
pyds.free_gbuffer(srcmeta.extMsg)
srcmeta.extMsgSize = 0
logging.debug("meta_free_func: END")