Hi –
This may be a duplicate, my last message was sent from the wrong source account.
As an exercise, I am interested in adding a little new functionality to the file_source block. When a file is being replayed, I would like to see the file’s position displayed from 0% to 100%. So, I would like to add a source file position slider widget (or use the current slider, but add functionality to source file).
Basic flow:
Where the slider position shows the position within the replay file:
I have worked my way through the Python tutorials (I’m new to gnuradio) and I’m looking for a recommendation about how to implement this feature. My guess is that it will involve the function probe, but I think /src/gnuradio/gr-blocks/lib file_source_impl may also need to be modified in order to expose both the file size and the current file position as outputs?
I am interested in working through this as an exercise (I’m not looking for someone to post the solution), but I am fishing for an outline of what I need to do. I’m guessing:
1) Create new C module and XML and integrate it into grc
2) Put the new module into a flow and modify top block to probe the size and position values and calculate percent complete
3) Update the slider with information from #2
Thanks!
Gary