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c0ca354e
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2018-03-22T16:04:29
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Label this release 2.0 instead of 1.6
This also pulls the formatting changes from
19c791cdac6df84418c66eb9d67cfa9703bc2461 into the TurboJPEG C API docs.
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dc4b9002
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2017-11-16T20:43:12
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TurboJPEG: Add alpha offset array/method
Also, set the red/green/blue offsets for TJPF_GRAY to -1 rather than 0.
It was undefined behavior for an application to use those arrays/methods
with TJPF_GRAY anyhow, and this makes it easier for applications to
programmatically detect whether a given pixel format has red, green, and
blue components.
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aa745905
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2017-11-16T18:09:07
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TurboJPEG C API: Add BMP/PPM load/save functions
The main justification for this is to provide new libjpeg-turbo users
with a quick & easy way of developing a complete JPEG
compression/decompression program without requiring them to build
libjpeg-turbo from source (which was necessary in order to use the
project-private bmp API) or to use external libraries. These new
functions build upon significant enhancements to rdbmp.c, wrbmp.c,
rdppm.c, and wrppm.c which allow those engines to convert directly
between the native pixel format of the file and a pixel format
("colorspace" in libjpeg parlance) specified by the calling program.
rdbmp.c and wrbmp.c have also been modified such that the calling
program can choose to read or write image rows in the native (bottom-up)
order of the file format, thus eliminating the need to use an inversion
array. tjLoadImage() and tjSaveImage() leverage these new underlying
features in order to significantly improve upon the performance of the
old bmp API.
Because these new functions cannot work without the libjpeg-turbo
colorspace extensions, the libjpeg-compatible code in turbojpeg.c has
been removed. That code was only there to serve as an example of how
to use the TurboJPEG API on top of libjpeg, but more specific, buildable
examples now exist in the https://github.com/libjpeg-turbo/ijg
repository.
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dadebcd7
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2017-06-28T11:43:08
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TurboJPEG: Add "copy none", progressive xform opts
Allow progressive entropy coding to be enabled on a
transform-by-transform basis, and implement a new transform option for
disabling the copying of markers.
Closes #153
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aba6ae59
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2017-06-27T13:24:08
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TurboJPEG: Opt. enable progressive entropy coding
Fulfills part of the feature request in #153. Also paves the way for
SIMD-accelerated progressive Huffman coding (refer to #46.)
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d4092f6b
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2017-06-27T10:54:21
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TurboJPEG: Improve error handling
- Provide a new C API function and TJException method that allows
calling programs to query the severity of a compression/decompression/
transform error.
- Provide a new flag that instructs the library to immediately stop
compressing/decompressing/transforming if a warning is encountered.
Fixes #151
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b9ab64d8
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2017-05-11T21:02:29
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TurboJPEG: Thread-safe error message retrieval
Introduce a new C API function (tjGetErrorStr2()) that can be used to
retrieve compression/decompression/transform error messages in a
thread-safe (i.e. instance-specific) manner. Retrieving error messages
from global functions is still thread-unsafe.
Addresses a concern expressed in #151.
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6fa14b37
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2015-08-13T20:06:03
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Declare source buffers in TurboJPEG C API as const
This reassures the caller that the buffers will not be modified and also
allows read-only buffers to be passed to the functions.
Partially reverts 3947a19f25fc8186d3812dbcf8e70baea36ef652.
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40dd3146
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2014-08-17T12:23:49
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Refactored YUVImage Java class so that it supports both unified YUV image buffers as well as separate YUV image planes; modified the JNI functions accordingly and added new helper functions to the TurboJPEG C API (tjPlaneWidth(), tjPlaneHeight(), tjPlaneSizeYUV()) to facilitate those modifications; changed potentially confusing "component width" and "component height" terms to "plane width" and "plane height" and modified variable names in turbojpeg.c to reflect this; numerous other documentation tweaks
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1360 632fc199-4ca6-4c93-a231-07263d6284db
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9d77dad4
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2014-08-12T15:06:30
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Reformat TurboJPEG C API documentation to improve ease of maintenance and to make it more consistent with the javadoc formatting; fix minor error in tjCompressFromYUV() prototype.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1344 632fc199-4ca6-4c93-a231-07263d6284db
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aecea388
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2014-08-11T18:05:41
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Extend the TurboJPEG C API to support handling YUV images stored in separate image planes instead of a unified buffer
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1343 632fc199-4ca6-4c93-a231-07263d6284db
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34dca052
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2014-02-28T09:17:14
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Implement a YUV decode function in the TurboJPEG API, to be symmetric with tjEncodeYUV().
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1132 632fc199-4ca6-4c93-a231-07263d6284db
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07e982d9
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2013-10-31T07:11:39
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Deprecate and undocument the FORCE{MMX|SSE|SSE2|SSE3} flags. These were originally introduced in TurboJPEG/IPP as a way to override the automatic CPU selection in the underlying IPP codec, which was closed source. They are not meaningful anymore, since libjpeg-turbo provides environment variables to accomplish the same thing and since it no longer necessarily uses x86 SIMD code behind the scenes.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1072 632fc199-4ca6-4c93-a231-07263d6284db
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910a3572
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2013-10-30T23:02:57
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Extend the TurboJPEG C API to support compressing JPEG images from YUV planar images
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1067 632fc199-4ca6-4c93-a231-07263d6284db
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cd7c3e66
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2013-08-23T02:49:25
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Add CMYK support to the TurboJPEG C API
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1019 632fc199-4ca6-4c93-a231-07263d6284db
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1f3635c4
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2013-08-18T10:19:00
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Add 4:1:1 subsampling support in the TurboJPEG C API
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1014 632fc199-4ca6-4c93-a231-07263d6284db
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bcda6834
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2013-08-18T09:02:42
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Upgrade to Doxygen 1.8.3.1; Add note regarding the fact that 4:4:0 lacks full SIMD support.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1007 632fc199-4ca6-4c93-a231-07263d6284db
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71ccb39d
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2013-08-18T09:00:15
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Upgrade to Doxygen 1.8.3.1
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1006 632fc199-4ca6-4c93-a231-07263d6284db
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a4a48ed0
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2013-08-18T08:47:03
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Upgrade to Doxygen 1.8.3.1
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1005 632fc199-4ca6-4c93-a231-07263d6284db
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870fd8f1
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2011-09-20T05:04:06
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Add a couple of missing pages
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@708 632fc199-4ca6-4c93-a231-07263d6284db
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f5467110
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2011-09-20T05:02:19
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Implement custom filter callback in Java
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@707 632fc199-4ca6-4c93-a231-07263d6284db
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7bf04d39
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2011-09-17T00:18:31
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Implement a custom DCT filter callback for lossless transforms
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@703 632fc199-4ca6-4c93-a231-07263d6284db
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9b28defe
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2011-05-21T14:37:15
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Completely refactored the TurboJPEG C API so that it uses pixel formats instead of the clunky pixel size + flags combination to define the pixel size and component order. tjCompress2() and tjTransform() can also now grow the JPEG buffer as needed, which can allow programs to save memory by not pre-allocating the "worst-case" buffer size calculated by TJBUFSIZE(). Converted API documentation to Doxygen. There is no legacy code remaining, so the refactored version of the library has been re-licensed under a BSD-style license.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@616 632fc199-4ca6-4c93-a231-07263d6284db
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