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[task #16096] Writing of TIFF files
From: |
Mohammad Akhlaghi |
Subject: |
[task #16096] Writing of TIFF files |
Date: |
Wed, 15 Dec 2021 15:10:52 -0500 (EST) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:95.0) Gecko/20100101 Firefox/95.0 |
URL:
<https://savannah.gnu.org/task/?16096>
Summary: Writing of TIFF files
Project: GNU Astronomy Utilities
Submitted by: makhlaghi
Submitted on: Wed 15 Dec 2021 08:10:50 PM UTC
Should Start On: Wed 15 Dec 2021 12:00:00 AM UTC
Should be Finished on: Wed 15 Dec 2021 12:00:00 AM UTC
Category: Libraries
Priority: 5 - Normal
Item Group: Enhancement
Status: Postponed
Privacy: Public
Percent Complete: 0%
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Effort: 0.00
_______________________________________________________
Details:
Currently Gnuastro's can only read from TIFF files, it can't write to them
(see the lib/tiff.c
<https://git.savannah.gnu.org/cgit/gnuastro.git/tree/lib/tiff.c> file in
Gnuastro's source)!
The main reason behind this was time: unlike JPEG (which is only one image per
file), TIFF allows multiple images per file (like FITS extensions), so the
libtiff library's writing functions are a little more complicated than those
functions for reading.
As a result, I only implemented reading of TIFF files (which I needed at that
moment), not writing of TIFF files!
If anyone is interested in doing this, please make a post here, its a good
chance to learn professional APIs of important libraries!
I'd be happy to help. There are other examples of reading or writing to
different file formats, like lib/eps.c
<https://git.savannah.gnu.org/cgit/gnuastro.git/tree/lib/eps.c> (for writing
EPS files), lib/jpeg.c
<https://git.savannah.gnu.org/cgit/gnuastro.git/tree/lib/jpeg.c> (for
reading/writing JPEG files), lib/pdf.c
<https://git.savannah.gnu.org/cgit/gnuastro.git/tree/lib/pdf.c> (for writing
PDF files, which actually writes EPS, then compiles them to PDF), and of
course, lib/tiff.c
<https://git.savannah.gnu.org/cgit/gnuastro.git/tree/lib/tiff.c> (that
currently on reads from TIFF files).
_______________________________________________________
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<https://savannah.gnu.org/task/?16096>
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- [task #16096] Writing of TIFF files,
Mohammad Akhlaghi <=