[OpenWalnut-Dev] Buffered WModuleInputConnector

[Christof Pieloth]

Hi,

Alex is right. We are working on  real-time analysis of EEG and MEG 
signals. In a use case the first module is streaming some data (a 
connected EEG device or a loaded FIFF file (simulation)) and connected 
modules are processing the incoming data. So, in your module graph you 
can build a sequential or parallel pipeline of modules on top of the 
streaming module. Each module implements some algorithms like 
preprocessing (FIR filter) or trigger detection.
Because the computing time depends on the algorithm and data, a module 
requires a buffer for incomming data to prevent some data conflicts.

Let's have a chat in IRC.

Bye,
Christof


Am 29.05.2012 19:03, schrieb Alexander Wiebel:
> Hi Mario,
> ich vermute es geht ums Echtzeit-EEG, dass ich 2010 mit Mirco Fuchs als
> DA ausgeschrieben hatte (siehe Anhang).
>
> Gruß Alex
>
> On 05/29/2012 06:42 PM, Mario Hlawitschka wrote:
>> Hi Christof,
>>
>> thanks for contributing to OW.
>>
>> Not knowing what you are working on, could you explain in a bit more detail what the queue/ring buffer etc. should do in the context of input and output connectors? Do you have an example case where you are using it to demonstrate its purpose? Maybe one, that could serve as part of the OW  user documentation as well.
>>
>>
>> Looking at the diff, there are some minor language issues in the documentation, e.g.:
>> This class checks whether the input connector is an instance of WModuleInputDataCollection, if is it true. =>  More or less incomplete sentence?
>> We can discuss those off-list.
>>
>> Is there a reason why thread-safety is only guaranteed for one producer and once consumer in the ring buffer implementation?
>>
>>
>> Thanks,
>>
>> 	Mario
>>
>>
>> On May 29, 2012, at 5:50 PM, Christof Pieloth wrote:
>>
>>> Hello OW developers,
>>>
>>> we implement an interface and class to realize a buffered or collection-like WModuleInputConnector. This should be useful for data processing through a pipeline of modules.
>>> Each module can use their own implementation of "WModuleInputDataCollection" like a queue, ring buffer or more. The source module must use "WModuleOutputDataCollectionable" to fill the connected WModuleInputDataCollections, because WModuleInputData only fetches the data from WModuleOutputData.
>>> It would be great if the diff, or an improved diff, could be included in default.
>>>
>>> Bye,
>>> Christof Pieloth
>>>
>>> -- 
>>> HTWK Leipzig, University of Applied Sciences
>>> Faculty of Electrical Engineering and Information Technology
>>> Laboratory for Biosignal Processing (LaBP)
>>>
>>> fon:  +49 (0) 341 3076 3133
>>> fax:  +49 (0) 341 3076 853133
>>> mail: pieloth 'at' labp.htwk-leipzig.de
>>>
>>>
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-- 
HTWK Leipzig, University of Applied Sciences
Faculty of Electrical Engineering and Information Technology
Laboratory for Biosignal Processing (LaBP)

fon:  +49 (0) 341 3076 3133
fax:  +49 (0) 341 3076 853133
mail: pieloth 'at' labp.htwk-leipzig.de