Re: [Discuss-gnuradio] [GSOC17 - Draft proposal] Implement SigMF functionality for GNU Radio

[Bastian Bloessl]

Hi Ben,

On 03/24/2017 05:01 PM, Ben Hilburn wrote:
> 
>     - I wonder what would be the workflow when creating a SigMF recording.
>     An issue might be that you cannot immediately write the SigMF meta file
>     during recording. (For example, the hash has to be calculated after the
>     recording. Or the annotations have to be written after the capture
>     segments.). Did you plan to create the meta data in memory and write the
>     file when the flow graph shuts down (which might cause data loss when
>     you experience a segfault) or do you write meta data to disk in an
>     intermediate format that you have to post-process manually to create the
>     final SigMF files.
> 
> 
> So the SigMF spec is designed specifically to enable writing the
> metadata and dataset files in a streaming manner. 

Can annotations and capture segments be interleaved or how is it
possible to write the metadata in a streaming manner?

Best,
Bastian