PARA_ERROR(GET_AUDIO_FILE, "can not get current audio file"), \
PARA_ERROR(GET_STREAM, "can not get current stream"), \
PARA_ERROR(NO_STREAM, "no such stream"), \
+ PARA_ERROR(AUDIO_FILE, "no such audio file"), \
PARA_ERROR(GET_QUERY, "can not get query for specified stream"), \
PARA_ERROR(TMPFILE, "error while writing temporary file"), \
PARA_ERROR(META, "can not get meta data"), \