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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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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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0f4469c5
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2014-11-22T23:56:26
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Oops. Include the tjPlane*() functions in the mapfile so that they are exposed in the shared library on ELF systems.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.4.x@1429 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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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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f610d61f
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2013-04-26T10:33:29
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Extend the TurboJPEG C API to support generating YUV images with arbitrary padding and to support image scaling when decompressing to YUV
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@962 632fc199-4ca6-4c93-a231-07263d6284db
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9b49f0e4
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2011-07-12T03:17:23
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Re-work TJBUFSIZE() to take into account the level of chrominance subsampling
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@668 632fc199-4ca6-4c93-a231-07263d6284db
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6b76f75d
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2011-05-24T16:52:47
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Add new API functions, tjAlloc() and tjFree(), which allow memory to be allocated and freed using a method of the library's choosing. At the moment, the primary purpose for this is to avoid allocating/freeing memory across the DLL boundary on Windows.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@634 632fc199-4ca6-4c93-a231-07263d6284db
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cb6205a7
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2011-05-24T13:37:37
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Add new API functions to JNI mapfile as well
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@628 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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109a578e
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2011-03-01T09:53:07
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tjGetScaledSize() would never be able to accommodate scaling factors > 1, so replace it with a function that returns a list of fractional scaling factors that TurboJPEG supports.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@477 632fc199-4ca6-4c93-a231-07263d6284db
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890f1e04
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2011-02-26T22:02:37
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Expose libjpeg lossless transform feature in TurboJPEG/OSS
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@464 632fc199-4ca6-4c93-a231-07263d6284db
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98a7bdec
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2011-02-26T20:04:23
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Remove entry for tjScaledSize()
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@458 632fc199-4ca6-4c93-a231-07263d6284db
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89d11649
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2011-02-26T19:59:01
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Include tjGetScaledSize() in version scripts
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@457 632fc199-4ca6-4c93-a231-07263d6284db
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84241603
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2011-02-25T02:08:23
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Replace the TJ_YUV flag with two new API functions
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@448 632fc199-4ca6-4c93-a231-07263d6284db
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9fa95594
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2011-02-25T00:23:44
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Use a proper version script for libturbojpeg
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@442 632fc199-4ca6-4c93-a231-07263d6284db
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eeab6957
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2011-02-25T00:02:04
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Replace the TJ_YUV flag with two new API functions, and add TJBUFSIZEYUV() from trunk
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.1.x@440 632fc199-4ca6-4c93-a231-07263d6284db
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6e51e19b
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2011-02-24T19:36:02
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Use a proper version script for libturbojpeg, since we've added functions to it since 1.0
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.1.x@436 632fc199-4ca6-4c93-a231-07263d6284db
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4e8ae08b
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2011-02-22T06:44:50
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Add new functions to anonymous version script
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@423 632fc199-4ca6-4c93-a231-07263d6284db
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b28fc571
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2011-02-22T06:41:29
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Make the scaling API a bit more friendly
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@422 632fc199-4ca6-4c93-a231-07263d6284db
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8ed7b814
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2011-02-15T08:31:34
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Added scaling API to TurboJPEG/OSS
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@367 632fc199-4ca6-4c93-a231-07263d6284db
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190d5495
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2010-12-14T19:48:38
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Include new tjDecompressHeader2() function
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@313 632fc199-4ca6-4c93-a231-07263d6284db
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6f8c6688
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2010-02-16T05:03:51
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Build TurboJPEG/OSS with a version script to prevent any non-global symbols from being accessible (this is to protect against potential namespace conflicts when preloading it into an application via VirtualGL.)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@109 632fc199-4ca6-4c93-a231-07263d6284db
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