Inconsistent edge behavior with fluid.bufampslice~

[rconstanzo]

So when iterating through different startframe values in fluid.bufampslice~ I noticed that when sending negative values for startframe, they get internally clamped to zero (this is good IMO). However, if you having a startframe + numframes that exceeds the duration of the file, you get a red error message plastered to the console.

This leads to inconsistent behavior where when programmatically moving through positions in a buffer one needs to be careful of the ending of the file, and not the beginning.

I get that what is being clamped is different (clamping startframe at zero (though not at the top end) vs having a numframes that exceeds the duration), but the UX is awkward as you have to be careful in one direction only.

IMO a more consistent behavior would be:

if ((startframe + numframes) > duration) {
     numframes = duration - startframe;
     carryOnWithAnalysis;
}

That way you can still analyze whatever you want programmatically without having to count samples at edge cases.

Example patch:

<pre><code>
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G0Q1xVB
-----------end_max5_patcher-----------
</code></pre>