* @retval #MEDIADEMUXER_ERROR_INVALID_STATE Invalid state
* @retval #MEDIADEMUXER_ERROR_INVALID_OPERATION Invalid Operation
* @pre The media demuxer state should be #MEDIADEMUXER_STATE_IDLE.
- * @pre mediademuxer_set_error_cb should be called before mediademuxer_prepare().
+ * @pre mediademuxer_set_error_cb() should be called before mediademuxer_prepare().
* @post The media demuxer state will be #MEDIADEMUXER_STATE_READY.
* @see mediademuxer_set_data_source()
* @see mediademuxer_unprepare()