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4f2216b4
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2019-11-26T18:14:33
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Neon: Intrinsics implementation of RGB->YCbCr
The previous AArch32 and AArch64 GAS implementations are retained by
default when using GCC, in order to avoid a performance regression. The
intrinsics implementation can be forced on or off using a new
NEON_INTRINSICS CMake variable.
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88ae6098
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2020-10-27T13:28:56
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Merge branch 'ijg' into dev
- Restore GIF read/compressed GIF write support from jpeg-6a and
jpeg-9d.
- Integrate jpegtran -wipe and -drop options from jpeg-9a and jpeg-9d.
- Integrate jpegtran -crop extension (for expanding the image size) from
jpeg-9a and jpeg-9d.
- Integrate other minor code tweaks from jpeg-9*
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9fc018fd
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2020-01-12T00:00:00
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The Independent JPEG Group's JPEG software v9d
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96e4e7eb
|
2018-01-14T00:00:00
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The Independent JPEG Group's JPEG software v9c
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b4525f9f
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2020-10-19T22:05:09
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jversion.h: Update copyrights
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00607ec2
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2020-01-08T14:22:35
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Eliminate unnecessary NULL checks before tjFree()
+ document that tjFree() accepts NULL pointers without complaint.
Effectively, it has had that behavior all along, but the API does not
guarantee that tjFree() will be implemented with free() behind the
scenes, so it's best to formalize the behavior.
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23e8e0ff
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2019-01-01T18:29:55
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jversion.h: Bump copyright year to 2019
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32707687
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2018-03-31T11:33:22
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jversion.h: Bump copyright year to 2018
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293263c3
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2018-03-17T15:14:35
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Format preprocessor macros more consistently
Within the libjpeg API code, it seems to be more the convention than not
to separate the macro name and value by two or more spaces, which
improves general readability. Making this consistent across all of
libjpeg-turbo is less about my individual preferences and more about
making it easy to automatically detect variations from our chosen
formatting convention. I intend to release the script I'm using to
validate this stuff, once it matures and stabilizes a bit.
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19c791cd
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2018-03-08T10:55:20
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Improve code formatting consistency
With rare exceptions ...
- Always separate line continuation characters by one space from
preceding code.
- Always use two-space indentation. Never use tabs.
- Always use K&R-style conditional blocks.
- Always surround operators with spaces, except in raw assembly code.
- Always put a space after, but not before, a comma.
- Never put a space between type casts and variables/function calls.
- Never put a space between the function name and the argument list in
function declarations and prototypes.
- Always surround braces ('{' and '}') with spaces.
- Always surround statements (if, for, else, catch, while, do, switch)
with spaces.
- Always attach pointer symbols ('*' and '**') to the variable or
function name.
- Always precede pointer symbols ('*' and '**') by a space in type
casts.
- Use the MIN() macro from jpegint.h within the libjpeg and TurboJPEG
API libraries (using min() from tjutil.h is still necessary for
TJBench.)
- Where it makes sense (particularly in the TurboJPEG code), put a blank
line after variable declaration blocks.
- Always separate statements in one-liners by two spaces.
The purpose of this was to ease maintenance on my part and also to make
it easier for contributors to figure out how to format patch
submissions. This was admittedly confusing (even to me sometimes) when
we had 3 or 4 different style conventions in the same source tree. The
new convention is more consistent with the formatting of other OSS code
bases.
This commit corrects deviations from the chosen formatting style in the
libjpeg API code and reformats the TurboJPEG API code such that it
conforms to the same standard.
NOTES:
- Although it is no longer necessary for the function name in function
declarations to begin in Column 1 (this was historically necessary
because of the ansi2knr utility, which allowed libjpeg to be built
with non-ANSI compilers), we retain that formatting for the libjpeg
code because it improves readability when using libjpeg's function
attribute macros (GLOBAL(), etc.)
- This reformatting project was accomplished with the help of AStyle and
Uncrustify, although neither was completely up to the task, and thus
a great deal of manual tweaking was required. Note to developers of
code formatting utilities: the libjpeg-turbo code base is an
excellent test bed, because AFAICT, it breaks every single one of the
utilities that are currently available.
- The legacy (MMX, SSE, 3DNow!) assembly code for i386 has been
formatted to match the SSE2 code (refer to
ff5685d5344273df321eb63a005eaae19d2496e3.) I hadn't intended to
bother with this, but the Loongson MMI implementation demonstrated
that there is still academic value to the MMX implementation, as an
algorithmic model for other 64-bit vector implementations. Thus, it
is desirable to improve its readability in the same manner as that of
the SSE2 implementation.
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d34d2559
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2017-01-19T19:05:21
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Merge branch 'master' into dev
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e1e816e6
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2017-01-19T15:33:48
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|
Slightly de-confusify cjpeg, jpegtran usage info
+ bump copyright year
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426d787c
|
2016-05-28T16:42:44
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|
64-bit AVX2 impl. of RGB->YCC color conversion
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3ab68cf5
|
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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ae411288
|
2016-02-18T16:02:28
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|
Reorder copyright messages in cjpeg/djpeg/jpegtran
Place the authors in the following order:
* libjpeg-turbo authors (2009-) in descending order of the date of their
most recent contribution to the project, then in ascending order of
the date of their first contribution to the project
* Upstream authors in descending order of the date of the first
inclusion of their code (this indicates that their code serves as the
foundation of this code.)
This also adds Siarhei to the author list, since he contributed ARM SIMD
code both as a Nokia employee and more recently as an independent
developer.
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54e6b8e8
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2016-02-18T15:16:17
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Include some comments/doc tweaks from jpeg-9+
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a560e4b4
|
2016-01-17T00:00:00
|
|
The Independent JPEG Group's JPEG software v9b
|
|
|
fc11193e
|
2014-01-19T00:00:00
|
|
The Independent JPEG Group's JPEG software v9a
|
|
|
e7f88aec
|
2013-01-13T00:00:00
|
|
The Independent JPEG Group's JPEG software v9
|
|
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f3a8684c
|
2016-01-07T00:19:43
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|
SSE2 SIMD implementation of Huffman encoding
Full-color compression speedups relative to libjpeg-turbo 1.4.2:
2.8 GHz Intel Xeon W3530, Linux, 64-bit: 2.2-18% (avg. 9.5%)
2.8 GHz Intel Xeon W3530, Linux, 32-bit: 10-25% (avg. 17%)
2.3 GHz AMD A10-4600M APU, Linux, 64-bit: 4.9-17% (avg. 11%)
2.3 GHz AMD A10-4600M APU, Linux, 32-bit: 8.8-19% (avg. 15%)
3.0 GHz Intel Core i7, OS X, 64-bit: 3.5-16% (avg. 10%)
3.0 GHz Intel Core i7, OS X, 32-bit: 4.8-14% (avg. 11%)
2.6 GHz AMD Athlon 64 X2 5050e:
Performance-neutral (give or take a few percent)
Full-color compression speedups relative to IPP:
2.8 GHz Intel Xeon W3530, Linux, 64-bit: 4.8-34% (avg. 19%)
2.8 GHz Intel Xeon W3530, Linux, 32-bit: -19%-7.0% (avg. -7.0%)
Refer to #42 for discussion. Numerous other approaches were attempted,
but this one proved to be the most performant across all platforms.
This commit also fixes #3 (works around, really-- the clang-compiled version
of jchuff.c still performs 20% worse than its GCC-compiled counterpart, but
that code is now bypassed by the new SSE2 Huffman algorithm.)
Based on:
https://github.com/mayeut/libjpeg-turbo/commit/2cb4d41330e1edc4469f6b97ba73b73abfbeb02f
https://github.com/mayeut/libjpeg-turbo/commit/36c94e050d117912adbff9fbcc6fe307df240168
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2111c5ac
|
2016-01-06T19:24:55
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|
Merge branch '1.4.x'
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5a3b4fed
|
2016-01-06T19:17:54
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|
Regression: Allow co-install of 32-bit/64-bit RPMs
Fix a regression introduced in 1.4.1 that prevented 32-bit and 64-bit
libjpeg-turbo RPMs from being installed simultaneously on recent Red
Hat/Fedora distributions. This was due to the addition of the
SIZEOF_SIZE_T macro in jconfig.h, which allows the Huffman codec to
determine the word size at compile time. Since that macro differs
between 32-bit and 64-bit builds, this caused a conflict between the
i386 and x86_64 RPMs (any differing files, other than executables, are
not allowed when 32-bit and 64-bit RPMs are installed simultaneously.)
Since the macro is used only internally, it has been moved into
jconfigint.h.
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7e3acc0e
|
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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489583f5
|
1996-02-07T00:00:00
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|
The Independent JPEG Group's JPEG software v6a
|
|
|
bc79e068
|
1995-08-02T00:00:00
|
|
The Independent JPEG Group's JPEG software v6
|
|
|
a8b67c4f
|
1995-03-15T00:00:00
|
|
The Independent JPEG Group's JPEG software v5b
|
|
|
9ba2f5ed
|
1994-12-07T00:00:00
|
|
The Independent JPEG Group's JPEG software v5a
|
|
|
36a4cccc
|
1994-09-24T00:00:00
|
|
The Independent JPEG Group's JPEG software v5
|
|
|
cc7150e2
|
1993-02-18T00:00:00
|
|
The Independent JPEG Group's JPEG software v4a
|
|
|
88aeed42
|
1992-12-10T00:00:00
|
|
The Independent JPEG Group's JPEG software v4
|
|
|
4a6b7303
|
1992-03-17T00:00:00
|
|
The Independent JPEG Group's JPEG software v3
|
|
|
bd543f03
|
1991-12-13T00:00:00
|
|
The Independent JPEG Group's JPEG software v2
|
|
|
5829cb23
|
2012-01-15T00:00:00
|
|
The Independent JPEG Group's JPEG software v8d
|
|
c39ec149
|
2011-01-16T00:00:00
|
|
The Independent JPEG Group's JPEG software v8c
|
|
|
a4ecaacd
|
2010-05-16T00:00:00
|
|
The Independent JPEG Group's JPEG software v8b
|
|
|
f18f81b7
|
2010-02-28T00:00:00
|
|
The Independent JPEG Group's JPEG software v8a
|
|
|
989630f7
|
2010-01-10T00:00:00
|
|
The Independent JPEG Group's JPEG software v8
|
|
|
5996a25e
|
2009-06-27T00:00:00
|
|
The Independent JPEG Group's JPEG software v7
|
|
|
5ead57a3
|
1998-03-27T00:00:00
|
|
The Independent JPEG Group's JPEG software v6b
|
|
ffd9d052
|
2015-01-16T06:34:08
|
|
Bump copyright year
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.4.x@1512 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
f0abd46c
|
2015-01-11T00:58:44
|
|
Bump copyright year
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1490 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
88c7e300
|
2014-05-28T20:28:30
|
|
Our copyright string is longer than JMSG_LENGTH_MAX, and this was causing a buffer overrun if output_message() was called with msg_code set to JMSG_COPYRIGHT, or if format_message() was called with msg_code set to JMSG_COPYRIGHT and with a buffer of length JMSG_LENGTH_MAX.
We can't simply increase JMSG_LENGTH_MAX, because it is part of the libjpeg API, and it is generally assumed that a buffer of this length will be passed to format_message(). Thus, the easiest solution is simply to use a shorter copyright string for JMSG_COPYRIGHT.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.2.x@1320 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
d7a25595
|
2014-05-28T20:27:42
|
|
Our copyright string is longer than JMSG_LENGTH_MAX, and this was causing a buffer overrun if output_message() was called with msg_code set to JMSG_COPYRIGHT, or if format_message() was called with msg_code set to JMSG_COPYRIGHT and with a buffer of length JMSG_LENGTH_MAX.
We can't simply increase JMSG_LENGTH_MAX, because it is part of the libjpeg API, and it is generally assumed that a buffer of this length will be passed to format_message(). Thus, the easiest solution is simply to use a shorter copyright string for JMSG_COPYRIGHT.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1319 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
cf55f0b5
|
2014-05-28T20:19:54
|
|
Our copyright string is longer than JMSG_LENGTH_MAX, and this was causing a buffer overrun if output_message() was called with msg_code set to JMSG_COPYRIGHT, or if format_message() was called with msg_code set to JMSG_COPYRIGHT and with a buffer of length JMSG_LENGTH_MAX.
We can't simply increase JMSG_LENGTH_MAX, because it is part of the libjpeg API, and it is generally assumed that a buffer of this length will be passed to format_message(). Thus, the easiest solution is simply to use a shorter copyright string for JMSG_COPYRIGHT.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1318 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
da13af6b
|
2014-05-18T17:52:06
|
|
Further copyright header cleanup
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1310 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
d88f7ddf
|
2014-05-18T17:51:00
|
|
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
|
|
|
b7753510
|
2014-05-11T09:36:25
|
|
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
|
|
|
e5eaf374
|
2014-05-09T18:00:32
|
|
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
|
|
|
34347862
|
2014-05-06T09:53:21
|
|
SIMD-accelerated slow integer IDCT routine for MIPS DSPr2
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1269 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
693f4a56
|
2014-02-11T10:16:42
|
|
Fix an issue that prevented tjEncodeYUV2() and TJCompressor.encodeYUV() from working properly if the source image was very tiny. Basically, jpeg_start_compress() was attempting to write the JPEG headers, which was overrunning the YUV buffer. This patch removes the call to jpeg_start_compress() in tjEncodeYUV2() and replaces it with calls to the individual routines that are necessary to initialize the color converter and downsampler. TJUnitTest has also been modified to test for this condition (the buffer size regression test now works in YUV mode.)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.2.x@1121 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
2c0c807f
|
2014-02-11T09:56:12
|
|
Fix an issue that prevented tjEncodeYUV2() and TJCompressor.encodeYUV() from working properly if the source image was very tiny. Basically, jpeg_start_compress() was attempting to write the JPEG headers, which was overrunning the YUV buffer. This patch removes the call to jpeg_start_compress() in tjEncodeYUV2() and replaces it with calls to the individual routines that are necessary to initialize the color converter and downsampler. TJUnitTest has also been modified to test for this condition (the buffer size regression test now works in YUV mode.)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1120 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
ad2f618f
|
2014-02-11T09:55:32
|
|
Update copyright year in file header as well
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1119 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
68550a7e
|
2014-02-09T14:12:12
|
|
Update copyright notice to reflect recent SIMD contributions
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1117 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
2e22eb6e
|
2013-01-19T01:16:38
|
|
New year, new copyright message
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@917 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
c137f0f1
|
2013-01-01T10:56:38
|
|
Merge some of the README changes from jpeg-8d and change the copyright and version strings to reflect that we use some of that code.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@886 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
a73e870a
|
2012-12-31T02:52:30
|
|
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
|
|
|
c3ba39fc
|
2012-02-07T23:05:46
|
|
Merge copyright messages into one string and change the run-time messages to avoid confusion (we are not technically based on the latest libjpeg, although we do borrow some code from it)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.1.x@781 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
1d5b1cf3
|
2012-01-31T10:39:29
|
|
Merge copyright messages into one string and change the run-time messages to avoid confusion (we are not technically based on the latest libjpeg, although we do borrow some code from it)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.2.x@766 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
0dc7c82f
|
2011-08-12T19:31:09
|
|
Oops
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@685 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
3d0fe946
|
2011-08-12T19:30:21
|
|
Add Nokia copyright (for ARM NEON code)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@684 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
b5624ee8
|
2011-05-24T14:12:07
|
|
Remove any references to the wxWindows Library License and VirtualGL copyrights
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@631 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
23ce65d2
|
2011-02-18T07:02:32
|
|
Updated (C)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.1.x@392 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
d00dea30
|
2011-02-06T16:35:58
|
|
Update (C) message
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@351 632fc199-4ca6-4c93-a231-07263d6284db
|
|
|
2cdd2ae7
|
2010-10-10T06:54:21
|
|
Display libjpeg-turbo version/copyrights in run-time programs
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@247 632fc199-4ca6-4c93-a231-07263d6284db
|