sergiotarxz/libvips
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allow 'none' for jpeg profile save

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This commit is contained in:
John Cupitt 2009-08-13 15:26:35 +00:00
parent 3c206299f0
commit 9fcdda8df7
3 changed files with 14 additions and 7 deletions
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1
ChangeLog
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@ -15,6 +15,7 @@
- "header" sets a non-zero exit code if anything failed
- add and use im_check_uncoded() and friends
- matlab load handles column-major and plane-separated images (thanks Mikhail)
- JPEG save allows "none" for profile, meaning don't attach a profile
25/3/09 started 7.18.0
- revised version numbers

4
libsrc/format/im_vips2jpeg.c
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@ -27,6 +27,8 @@
* - write CMYK if Bands == 4 and Type == CMYK
* 12/5/09
* - fix signed/unsigned warning
* 13/8/09
* - allow "none" for profile, meaning don't embed one
*/
/*
@ -612,8 +614,10 @@ write_vips( Write *write, int qfac, const char *profile )
return( -1 );
/* A profile supplied as an argument overrides an embedded profile.
* "none" means don't attach a profile.
*/
if( profile &&
strcmp( profile, "none" ) != 0 &&
write_profile_file( write, profile ) )
return( -1 );
if( !profile &&

16
man/im_jpeg2vips.3
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@ -33,7 +33,7 @@ will return fred.jpg shrink by a factor of 8.
.B fail
makes the JPEG reader fail on any warnings. This can be useful for detecting
truncated files, for example: normally reading these produces a warning, but
truncated files, for example. Normally reading these produces a warning, but
no fatal error. Example:
fred.jpg:,fail
@ -42,7 +42,8 @@ will read fred.jpg, failing with a fatal error if the file has been truncated.
Any embedded ICC profiles are ignored: you always just get the RGB from the
file. Instead, the embedded profile will be attached to the image as metadata.
Any EXIF data is also attached as VIPS metadata.
You need to use something like im_icc_import(3) to get CIE values from the
file. Any EXIF data is also attached as VIPS metadata.
.B im_vips2jpeg(3)
writes the IMAGE to filename in JPEG format. It uses the
@ -53,16 +54,17 @@ A compression factor may be encoded in the filename: for example,
"fred.jpg:25" will write with factor 25.
An ICC profile may also be specified. For example,
"fred.jpg:25,/home/john/srgb.icc" will embed the profile stored in the file
"fred.jpg:,/home/john/srgb.icc" will embed the profile stored in the file
"/home/john/srgb.icc" into the JPEG image. This does not affect the pixels
which are written; just the way they are tagged.
which are written, just the way they are tagged. You can use the special
string "none" to mean "don't attach a profile".
If no profile is specified in the save string and the VIPS header contains an
ICC profile named IM_META_ICC_NAME ("icc-profile-data"), the
profile from the header will be attached.
profile from the VIPS header will be attached.
The image is automatically converted to RGB or Monochrome before saving. Any
metadata attached to the image is saved as EXIF, if possible.
The image is automatically converted to RGB, Monochrome or CMYK before saving.
Any metadata attached to the image is saved as EXIF, if possible.
.B im_vips2bufjpeg(3)
returns the compressed image in a memory buffer. The buffer