[PD] Large File Support on Linux (was: readsf fails to read 32 bits float wav)

[Charles Goyard]

Hi,

after some research, it seems more related to the size of the file after
all. I thought the problem was 32 bits files because it worked when I
converted them to 16 bits. But it was just the file size dropped under
2gb.

To sum up: a file over about 2Gb fails to open. This is related to how
Linux handles large files on 32 bits systems.

On my test patch I get the "done" bang as soon as I send the "start"
message.

Reading the code, it looks like the s_path.c/sys_open() oflags is
missing O_LARGEFILE support. pd-extended and pd-l2ork suffer from the
same.

Am I right there's no Large File Support for pd on 32 bits Linux ? If so
that's a major shortcoming, and something a bit heavy to fix. Does it
work out of the box on 64 bits linux ?

Thanks,

-- 
Charles

Hans-Christoph Steiner wrote:
> 
> Sounds like it, especially if you can reproduce it everytime.  File a
> bug report and include as simple a patch as possible to reproduce the
> issue, and the soundfile.
> 
> > today I noticed a readsf~ (on vanilla) opening a 5 wave file containing
> > 32 bits float audio fails silently. The doc says 4 bytes is unavailable
> > for AIFF, but I use WAVE.
> > 
> > The file is a 5 channels WAVE file with 5 tracks 32bits float at 48kHz.
> > 
> > Converting the audio to 16 bits PCM works.
> > 
> > Is that a bug ? On vanilla 0.44.