[Ardour-Dev] 2.8.x export code question

[John Rigg]

I'm going through the 2.0-ongoing export code to see if I can
work out why the output file gets truncated when exporting
with SRC.

In libs/ardour/session_export.cc there is this snippet of code
starting at line 258 (in AudioExportSpecification::prepare):

	pos = start_frame;
	end_frame = end_frame;
	total_frames = end_frame - start_frame;
	running = true; 
	do_freewheel = false; /* force a call to ::prepare_to_export() before proceeding to normal operation */

Probably a stupid question, but why total_frames = end_frame - start_frame
and not total_frames = end_frame - start_frame + 1  ?
Does the exported region not include both the start_frame and
end_frame?

John