Hi,
I'm pleased to present 'wavview', a single-file-abstraction waveform viewer.
It is fully "vanilla" (no external dependencies) and built with data
structures.
I have tried to make it versatile and easily integrable into more
higher-level applications or components: no connection is required and the
title is hidden.
It displays the content of a table, and allows you to zoom/scroll through
the data, select a range, and set a single-point index (e.g playback
position). This can be done by sending messages, or via interaction with
mouse and modifier keys.
The drawing consists of as many vertical segments ("bars") as there are
pixels in the width of the object. Each bar goes from the minimum value to
the maximum value among the samples contained in the interval represented
by the bar, so that peaks are always displayed correctly, regardless of the
zoom factor.
An additional optimization is performed, which computes several subsampled
min-max tables in advance; this significantly reduces the number of
calculations required to compute a single bar, especially with large tables.
It's available on Deken, just search "wavview".
Feel free to report issues or requests there:
https://github.com/metalunet/pd-wavview
(there's also a small animated gif demo in the front page).
p.s: wavview requires Pd 0.56 to run, because it uses the new 'goprect'
message.
Antoine Rousseau
_______________________________________________
Pd-announce mailing list -- [email protected]
To unsubscribe send an email to [email protected]
