Patches item #1312885, was opened at 2005-10-04 06:30 Message generated for change (Comment added) made by millerpuckette You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=478072&aid=1312885...
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: puredata Group: bugfix Status: Open Resolution: None Priority: 8 Submitted By: IOhannes m zmölnig (zmoelnig) Assigned to: Miller Puckette (millerpuckette) Summary: 2GB limit for soundfiles
Initial Comment: using [readsf~] and [writesf~] you cannot read/write files that are larger than 2GB; while this limit seems big for soundfiles, it is easily reached when doing multi-channel recordings (24 channels @ 44.1kHz take ~15 minutes to reach this limit)
to enable support for large files (>2GB), one has to use 64bit variants of open and friends (open64(),...)
attached is a patch that enables the use of these variants in d_soundfile.c when "_LARGEFILE64_SOURCE" is defined. the patch also changes the configure.in in order to check whether defining "_LARGEFILE64_SOURCE" is a good idea; you can turn off largefile support via the "--disable-largefile" option.
(btw, max/msp cannot write soundfiles > 2GB too)
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Comment By: Miller Puckette (millerpuckette)
Date: 2005-12-31 12:04
Message: Logged In: YES user_id=313747
Took for 0.40... the whole "configure.in" file needs a rewrite (which might require changing this bit) but I've never been able to get the autoconf system to work for me.
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Comment By: IOhannes m zmölnig (zmoelnig) Date: 2005-10-04 09:48
Message: Logged In: YES user_id=564396
probably a bit more explanation: "_LARGEFILE64_SOURCE" is a special define that enables large files support when including fcntl.h, unistd.h,...
the conditional defines found in d_soundfiler.h are just there to use the new functions (like "open64") instead of the normal ones (like "open")
independently from my solution i found the following in http://www.cwp.mines.edu/pipermail/seisunix/2005/001082.html
<snip> #ifdef _LARGEFILE64_SOURCE /* if the largefile source flag is set */ # define open open64 # define creat creat64 # define lseek lseek64 # undef off_t # ifndef _GNU_SOURCE # define off_t long long # else # define off_t off64_t # endif # define fstat fstat64 # define stat stat64 # undef fseeko # define fseeko fseeko64 # undef ftello # define ftello ftello64 # define fopen fopen64 # define freopen freopen64 #endif </snip>
another possibility would be to use the "__REDIRECT" define, so fcntl.h would do the defines itself, but i am a bit afraid of this.
and another question is, whether it would be a good idea, to have these defines in "m_pd.h", so all files using that would automatically have large-file support....
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