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44b2399a
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2017-01-19T15:18:57
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libjpeg API: Support reading/writing ICC profiles
This commit does the following:
-- Merges the two glueware functions (read_icc_profile() and
write_icc_profile()) from iccjpeg.c, which is contained in downstream
projects such as LCMS, Ghostscript, Mozilla, etc. These functions were
originally intended for inclusion in libjpeg, but Tom Lane left the IJG
before that could be accomplished. Since then, programs and libraries
that needed to embed/extract ICC profiles in JPEG files had to include
their own local copy of iccjpeg.c, which is suboptimal.
-- The new functions were prefixed with jpeg_ and split into separate
files for the compressor and decompressor, per the existing libjpeg
coding standards.
-- jpeg_write_icc_profile() was made slightly more fault-tolerant.
It will now trigger a libjpeg error if it is called before
jpeg_start_compress() or if it is passed NULL arguments.
-- jpeg_read_icc_profile() was made slightly more fault-tolerant.
It will now trigger a libjpeg error if it is called before
jpeg_read_header() or if it is passed NULL arguments. It will also
now trigger libjpeg warnings if the ICC profile data is corrupt.
-- The code comments have been wordsmithed.
-- Note that the one-line setup_read_icc_profile() function was not
included. Instead, libjpeg.txt now documents the need to call
jpeg_save_markers(cinfo, JPEG_APP0 + 2, 0xFFFF) prior to calling
jpeg_read_header(), if jpeg_read_icc_profile() is to be used.
-- Adds documentation for the new functions to libjpeg.txt.
-- Adds an -icc switch to cjpeg and jpegtran that allows those programs
to embed an ICC profile in the JPEG files they generate.
-- Adds an -icc switch to djpeg that allows that program to extract an
ICC profile from a JPEG file while decompressing.
-- Adds appropriate unit tests for all of the above.
-- Bumps the SO_AGE of the libjpeg API library to indicate the presence
of new API functions.
Note that the licensing information was obtained from:
https://github.com/mm2/Little-CMS/issues/37#issuecomment-66450180
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3ab68cf5
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2016-02-19T18:32:10
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libjpeg API: Partial scanline decompression
This, in combination with the existing jpeg_skip_scanlines() function,
provides the ability to crop the image both horizontally and vertically
while decompressing (certain restrictions apply-- see libjpeg.txt.)
This also cleans up the documentation of the line skipping feature and
removes the "strip decompression" feature from djpeg, since the new
cropping feature is a superset of it.
Refer to #34 for discussion.
Closes #34
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bd49803f
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2016-02-19T08:53:33
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Use consistent/modern code formatting for pointers
The convention used by libjpeg:
type * variable;
is not very common anymore, because it looks too much like
multiplication. Some (particularly C++ programmers) prefer to tuck the
pointer symbol against the type:
type* variable;
to emphasize that a pointer to a type is effectively a new type.
However, this can also be confusing, since defining multiple variables
on the same line would not work properly:
type* variable1, variable2; /* Only variable1 is actually a
pointer. */
This commit reformats the entirety of the libjpeg-turbo code base so
that it uses the same code formatting convention for pointers that the
TurboJPEG API code uses:
type *variable1, *variable2;
This seems to be the most common convention among C programmers, and
it is the convention used by other codec libraries, such as libpng and
libtiff.
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a560e4b4
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2016-01-17T00:00:00
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The Independent JPEG Group's JPEG software v9b
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fc11193e
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2014-01-19T00:00:00
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The Independent JPEG Group's JPEG software v9a
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e7f88aec
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2013-01-13T00:00:00
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The Independent JPEG Group's JPEG software v9
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7e3acc0e
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2015-10-10T10:25:46
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Rename README, LICENSE, BUILDING text files
The IJG README file has been renamed to README.ijg, in order to avoid
confusion (many people were assuming that that was our project's README
file and weren't reading README-turbo.txt) and to lay the groundwork for
markdown versions of the libjpeg-turbo README and build instructions.
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7222ec27
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2015-01-08T00:53:31
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Declare inbuffer const
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a2e6a9dd
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2006-02-04T00:00:00
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IJG R6b with x86SIMD V1.02
Independent JPEG Group's JPEG software release 6b
with x86 SIMD extension for IJG JPEG library version 1.02
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489583f5
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1996-02-07T00:00:00
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The Independent JPEG Group's JPEG software v6a
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bc79e068
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1995-08-02T00:00:00
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The Independent JPEG Group's JPEG software v6
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9ba2f5ed
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1994-12-07T00:00:00
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The Independent JPEG Group's JPEG software v5a
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36a4cccc
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1994-09-24T00:00:00
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The Independent JPEG Group's JPEG software v5
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5829cb23
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2012-01-15T00:00:00
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The Independent JPEG Group's JPEG software v8d
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c39ec149
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2011-01-16T00:00:00
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The Independent JPEG Group's JPEG software v8c
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989630f7
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2010-01-10T00:00:00
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The Independent JPEG Group's JPEG software v8
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5996a25e
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2009-06-27T00:00:00
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The Independent JPEG Group's JPEG software v7
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5ead57a3
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1998-03-27T00:00:00
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The Independent JPEG Group's JPEG software v6b
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eb32cc1e
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2015-06-25T03:44:36
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Add a new libjpeg API function (jpeg_skip_scanlines()) to allow for partially decoding a JPEG image.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1582 632fc199-4ca6-4c93-a231-07263d6284db
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2a6b8316
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2014-11-25T10:07:43
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Some software also needs the FAR macro. Ugh. Also wordsmithing.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.4.x@1432 632fc199-4ca6-4c93-a231-07263d6284db
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e2dd3e3e
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2014-11-25T09:48:15
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Restore the JPP() and JMETHOD() macros. Even though libjpeg-turbo doesn't use them anymore, other software apparently does:
https://bugzilla.redhat.com/show_bug.cgi?id=1164815
https://bugs.kde.org/show_bug.cgi?id=340944
https://bugzilla.mozilla.org/show_bug.cgi?id=1093615
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.4.x@1430 632fc199-4ca6-4c93-a231-07263d6284db
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5033f3e1
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2014-05-18T18:33:44
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Remove MS-DOS code and information, and adjust copyright headers to reflect the removal of features in r1307 and r1308. libjpeg-turbo has never supported MS-DOS, nor is it even possible for us to do so.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1312 632fc199-4ca6-4c93-a231-07263d6284db
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da13af6b
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2014-05-18T17:52:06
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Further copyright header cleanup
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1310 632fc199-4ca6-4c93-a231-07263d6284db
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d88f7ddf
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2014-05-18T17:51:00
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Further copyright header cleanup
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1309 632fc199-4ca6-4c93-a231-07263d6284db
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bc56b754
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2014-05-16T10:43:44
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Get rid of the HAVE_PROTOTYPES configuration option, as well as the related JMETHOD and JPP macros. libjpeg-turbo has never supported compilers that don't handle prototypes. Doing so requires ansi2knr, which isn't even supported in the IJG code anymore.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1308 632fc199-4ca6-4c93-a231-07263d6284db
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52ded876
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2014-05-15T20:30:16
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Remove all of the NEED_SHORT_EXTERNAL_NAMES stuff. There is scant information available as to which linkers ever had a 15-character global symbol name limit. AFAICT, it might have been a VMS and/or a.out BSD thing, but none of those platforms have ever been supported by libjpeg-turbo (nor are such systems supported by other open source libraries of this nature.)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1307 632fc199-4ca6-4c93-a231-07263d6284db
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78df2e61
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2014-05-12T09:23:57
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Add support for decompressing to RGB565 (16-bit) pixels
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1295 632fc199-4ca6-4c93-a231-07263d6284db
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333e9187
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2014-05-12T00:34:08
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Use 2-space indentation for the enums, to be consistent with the structs
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1291 632fc199-4ca6-4c93-a231-07263d6284db
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b7753510
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2014-05-11T09:36:25
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Convert tabs to spaces in the libjpeg code and the SIMD code (TurboJPEG retains the use of tabs for historical reasons. They were annoying in the libjpeg code primarily because they were not consistently used and because they were used to format as well as indent the code. In the case of TurboJPEG, tabs are used just to indent the code, so even if the editor assumes a different tab width, the code will still be readable.)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1285 632fc199-4ca6-4c93-a231-07263d6284db
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e5eaf374
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2014-05-09T18:00:32
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Convert tabs to spaces in the libjpeg code and the SIMD code (TurboJPEG retains the use of tabs for historical reasons. They were annoying in the libjpeg code primarily because they were not consistently used and because they were used to format as well as indent the code. In the case of TurboJPEG, tabs are used just to indent the code, so even if the editor assumes a different tab width, the code will still be readable.)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1278 632fc199-4ca6-4c93-a231-07263d6284db
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fe9c907b
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2014-04-18T07:58:29
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Minor comment correction (we support the full range of IDCT scaling factors now.)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1250 632fc199-4ca6-4c93-a231-07263d6284db
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ab70623e
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2013-01-18T23:42:31
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Implement in-memory source/destination managers even when not emulating the libjpeg v8 API/ABI
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@913 632fc199-4ca6-4c93-a231-07263d6284db
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a73e870a
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2012-12-31T02:52:30
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Change the copyright notices to make it clear that our modified files are not part of the IJG's software.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.2.x@873 632fc199-4ca6-4c93-a231-07263d6284db
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67ce3b23
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2011-12-19T02:21:03
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Added new alpha channel colorspace constants/pixel formats, so applications can specify that they need the unused byte in a 4-component RGB output buffer set to 0xFF when decompressing.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@732 632fc199-4ca6-4c93-a231-07263d6284db
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39ea562c
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2010-10-12T01:55:31
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Document new v7/v8 features; .doc = .txt
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@252 632fc199-4ca6-4c93-a231-07263d6284db
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10acd811
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2010-10-09T19:24:28
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Remove comments describing DCT scaling feature
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@240 632fc199-4ca6-4c93-a231-07263d6284db
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36a6eec9
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2010-10-08T08:05:44
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Added optional emulation of the jpeg-7 or jpeg-8b API/ABI's
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@236 632fc199-4ca6-4c93-a231-07263d6284db
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3cd2e503
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2010-02-23T21:43:21
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Fix compiler warning about ending struct with a comma
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@146 632fc199-4ca6-4c93-a231-07263d6284db
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ca3cebba
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2010-02-23T08:12:38
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Compile properly with C++
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@142 632fc199-4ca6-4c93-a231-07263d6284db
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8ece7fef
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2009-08-06T08:32:00
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Update copyrights to indicate files modified with colorspace extensions
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@57 632fc199-4ca6-4c93-a231-07263d6284db
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f25c071e
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2009-04-03T12:00:51
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Implement new colorspaces to allow directly compressing from/decompressing to RGB/RGBX/BGR/BGRX/XBGR/XRGB without conversion
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@35 632fc199-4ca6-4c93-a231-07263d6284db
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