libjpeg: Update to version 3.2.0

Message ID 20260703194133.2938870-15-adolf.belka@ipfire.org
State New
Headers
Series libjpeg: Update to version 3.2.0 |

Commit Message

Adolf Belka 3 Jul 2026, 7:41 p.m. UTC
- Update from version 3.1.4.1 to 3.2.0
- Update of rootfile
- Changelog
3.2.0
Significant changes relative to 3.2 beta1:
	1. Fixed a regression introduced by 3.2 beta1[9] that broke Arm64EC Windows
	builds.
	2. Hardened the PNG writer (which is used by djpeg and `tj3SaveImage*()`)
	against applications that may erroneously attempt to write sample values that
	are out of range for the specified output data precision.  This could have
	caused a buffer overrun in the PNG writer's rescale array if the output data
	precision was not 8 or 16 bits.  The buffer overrun did not likely pose a
	security risk, since `tj3SaveImage*()` is not exposed to arbitrary external
	input data and since a caller that abused the API in the aforementioned manner
	could never work properly.
	3. Hardened the libjpeg API against hypothetical applications that may
	erroneously call `jpeg_crop_scanline()` with buffered-image mode and raw data
	output enabled.  `jpeg_crop_scanline()` does not work with raw data output, but
	due to an oversight, it did not throw an error if both buffered-image mode and
	raw data output were enabled.  If a hypothetical application aborted a normal
	decompression operation without reading any scanlines, started a new
	decompression operation using the same libjpeg instance with buffered-image
	mode and raw data output enabled, then called `jpeg_crop_scanline()` with
	arguments that would have caused any of the component planes to be cropped to a
	width of 1 sample, `jpeg_crop_scanline()` would have used freed memory.
	However, this did not likely pose a security risk, since an application that
	abused the API in the aforementioned manner could never work properly.
	4. Fixed a buffer overrun and subsequent segfault in jpegtran that occurred
	when attempting to use the `-crop` and `-trim` options to expand the width of
	an image narrower than one iMCU, discard partial iMCUs, and fill each block in
	the expanded region with the DC coefficient of the nearest block in the input
	image ("flatten.")  Similarly, fixed an infinite loop that occurred when
	attempting to use the `-crop` and `-trim` options to expand the width of an
	image narrower than one iMCU, discard partial iMCUs, and fill the expanded
	region with repeated reflections of the input image ("reflect.")  When the only
	iMCU column in the input image is partial and partial iMCUs are trimmed, the
	flatten and reflect extensions cannot work properly, so jpegtran now throws an
	error if that is the case.  These issues were confined to the jpegtran
	application and thus did not pose a security risk.
3.1.90 (3.2 beta1)
Significant changes relative to 3.1.4.1:
	1. The legacy GNU Assembler (GAS) implementation of the Arm Neon SIMD
	extensions has been removed.  Arm builds of libjpeg-turbo must now use GCC 12
	or later or Clang in order to achieve full performance.
	2. The SIMD dispatchers have been overhauled so that the list of supported SIMD
	instruction sets is initialized on a per-instance basis rather than a
	per-thread basis, thus eliminating the need for thread-local storage in the
	libjpeg API library.  The overhaul also streamlines and modernizes the
	dispatcher architecture, eliminates redundant and unnecessary code, and
	generally simplifies the process of adding new SIMD extensions.  A new test
	program (simdcoverage) can be used to validate the correctness of a particular
	dispatcher.
	3. If the `WITH_PROFILE` CMake variable is enabled, libjpeg-turbo now measures
	the cumulative average throughput of each lossy JPEG compression and
	decompression algorithm and reports it to the command line when
	`jpeg_destroy_compress()`, `jpeg_destroy_decompress()`, or `tj3Destroy()` is
	called.
	4. jpegtran now honors the `-trim` and `-perfect` options when expanding the
	image size using the `-crop` option.  If `-trim` is specified, then partial
	iMCUs from the source image are discarded in the expanded image (equivalent to
	the previous behavior.)  If `-trim` is not specified, then partial iMCUs are
	left in place.  If `-perfect` is specified, then expanding the image size using
	the `-crop` option will fail if there are any partial iMCUs in the source
	image.  The new default behavior is useful, in combination with the `-drop`
	option, for reversibly combining multiple JPEG source images into a single
	composite JPEG image.
	5. The MIPS DSPr2 SIMD extensions have been removed.  Justifications:
	     - MIPS Technologies deprecated the MIPS architecture in favor of RISC-V in
	2021.
	     - The DSPr2 instruction set was already obsolete at that point, having
	been superseded by the MSA instruction set (which is now also deprecated.)
	     - The overall speedup from the DSPr2 SIMD extensions was never compelling,
	in part because some of the modules were implemented using scalar (non-SIMD)
	instructions and were thus no faster than the equivalent C modules.
	     - Some of the DSPr2 SIMD modules had long-standing bugs, and it was
	necessary to disable those modules in order to prevent accuracy issues with
	libjpeg-turbo on MIPS CPUs.
	     - The DSPr2 SIMD extensions only worked with 32-bit MIPS applications.
	     - The libjpeg-turbo Project has never had access to a MIPS test platform,
	which limited our ability to maintain the DSPr2 SIMD extensions.
	    Even before the MIPS architecture was deprecated, the aforementioned
	limitations had already reduced the number of platforms and applications that
	could benefit from the DSPr2 SIMD extensions to near zero.  The DSPr2 SIMD
	extensions will continue to be maintained in the 3.1.x branch on a break/fix
	basis.
	6. Added RISC-V Vector (RVV) SIMD implementations of the colorspace conversion,
	chroma downsampling and upsampling, integer quantization and sample conversion,
	and integer DCT/IDCT algorithms.  When using the accurate integer DCT/IDCT
	algorithms, RGB-to-baseline JPEG compression is approximately 149-246% (avg.
	201%) faster relative to libjpeg-turbo 3.1.x, and baseline-to-RGB JPEG
	decompression is approximately 48-180% (avg. 115%) faster.  (Tested on a 1.6
	GHz Ky X1 CPU.  Actual mileage may vary.)
	7. The TurboJPEG Java API has been moved to a
	[dedicated repository](https://github.com/libjpeg-turbo/turbojpeg-java) where
	it can evolve independently of the TurboJPEG C API based on demand.
	Justifications:
	     - The TurboJPEG Java API was designed around the needs of Java Web Start,
	an obsolete "zero-install" method of Java application deployment.  The idea was
	that JWS applications could be deployed along with JAR files containing the
	TurboJPEG Java API and TurboJPEG API library, which contained Java Native
	Interface (JNI) bindings to support the former.  It made sense for our project
	to package those resources so downstream developers could easily sign and
	deploy them via JWS.  These days, however, Java applications are more
	frequently deployed as standalone applications.
	     - The TurboJPEG Java API was designed at a time when libjpeg-turbo was not
	ubiquitous and JNA was nascent.  These days, libjpeg-turbo is used by most
	operating systems, so there is less of a need for us to package an end-to-end
	solution for high-speed JPEG support in Java.
	     - The Java-friendly design of the TurboJPEG Java API (specifically, the
	requirement that it work directly with Java arrays rather than NIO buffers)
	necessitated allocating all buffers on the Java heap in order to avoid buffer
	copies.  That necessitated using fixed-size JPEG buffers (the equivalent of
	`TJPARAM_NOREALLOC`), which meant that all JPEG buffers had to be big enough to
	account for the size of the ICC profile and the possibility of zero
	compression.  Some of the proposed new TurboJPEG API features would have been
	impossible to implement in the TurboJPEG Java API without completely
	redesigning it.
	     - The Java-friendly design of the TurboJPEG Java API made it
	more difficult to maintain, document, and extend than the C API, which reduced
	our ability to add needed features in a timely manner.
	    Example code (TurboJPEG/JNA) demonstrating how to use the TurboJPEG C API
	through Java Native Access (JNA) has been added to the source tree and can be
	built, tested, and installed by setting the `WITH_JNA` CMake variable.
	TurboJPEG/JNA generally performs as well as the TurboJPEG C API, whereas
	compressing JPEG images with the TurboJPEG Java API was slower on some
	platforms.
	8. To facilitate shadow recovery in underexposed images, the libjpeg and
	TurboJPEG APIs and associated programs now allow an 8-bit-per-sample lossy JPEG
	image to be decompressed to a 12-bit-per-sample output image.  This is enabled
	in the libjpeg API by setting `cinfo->data_precision = 12` after calling
	`jpeg_read_header()`, and in the TurboJPEG API by calling `tj3Decompress12()`
	after calling `tj3DecompressHeader()`.
	9. cjpeg, djpeg, `tj3LoadImage*()`, and `tj3SaveImage*()` now support
	8-bit-per-channel and 16-bit-per-channel PNG images.
	     - By default, cjpeg transfers the embedded ICC profile from a PNG input
	image to the JPEG image, and djpeg transfers the embedded ICC profile from the
	JPEG image to a PNG output image.  A new option (`-noicc`) can be used to
	disable that behavior.
	     - If called with a TurboJPEG compression instance, `tj3LoadImage*()`
	extracts the embedded ICC profile from a PNG image and associates it with the
	TurboJPEG instance if `TJPARAM_SAVEMARKERS` is set to 2 or 4.
	     - If called with a TurboJPEG decompression instance, `tj3SaveImage*()`
	transfers the ICC profile that was previously extracted from the JPEG image to
	a PNG image if `TJPARAM_SAVEMARKERS` is set to 2 or 4.
	     - The PNG writer upscales images with 2-7 and 9-15 bits of data
	precision to, respectively, 8-bit-per-channel and 16-bit-per-channel PNG
	images.  The upscaling algorithm is reversible, so a lossless JPEG image with a
	non-standard data precision can be losslessly converted to a PNG image and back
	to a lossless JPEG image with the same data precision.
	10. The TurboJPEG API has been improved in the following ways:
	     - `tj3GetICCProfile()` can now be called multiple times to retrieve the
	ICC profile that was previously extracted from a JPEG image.
	     - `tj3GetICCProfile()` can now be used to retrieve the ICC profile
	associated with a TurboJPEG compression instance (including an ICC profile
	extracted from a PNG image by `tj3LoadImage*()`.)
	     - The JPEG colorspace can now be reset to the default, using a new
	`TJPARAM_COLORSPACE` value (`TJCS_DEFAULT`.)
	     - 4:1:0 and 2:4 subsampling are now supported.
	11. Added a new cjpeg, djpeg, and jpegtran option (`-nooverwrite`) that causes
	the programs to fail if the specified output file exists.
	12. jpegtran now includes a `-roll` option that performs a lossless roll
	transform (shift with wraparound), which is similar in concept to the `-roll`
	option in ImageMagick and the Offset filter/tool in Photoshop and GIMP.

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
---
 config/rootfiles/common/libjpeg | 2 +-
 lfs/libjpeg                     | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)
  

Patch

diff --git a/config/rootfiles/common/libjpeg b/config/rootfiles/common/libjpeg
index 67fa34985..9cef3944e 100644
--- a/config/rootfiles/common/libjpeg
+++ b/config/rootfiles/common/libjpeg
@@ -19,7 +19,7 @@  usr/lib/libjpeg.so.8
 usr/lib/libjpeg.so.8.3.2
 #usr/lib/libturbojpeg.so
 usr/lib/libturbojpeg.so.0
-usr/lib/libturbojpeg.so.0.4.0
+usr/lib/libturbojpeg.so.0.5.0
 #usr/lib/pkgconfig/libjpeg.pc
 #usr/lib/pkgconfig/libturbojpeg.pc
 #usr/share/doc/libjpeg-turbo
diff --git a/lfs/libjpeg b/lfs/libjpeg
index b03f795cf..4dcfaf4f0 100644
--- a/lfs/libjpeg
+++ b/lfs/libjpeg
@@ -24,7 +24,7 @@ 
 
 include Config
 
-VER        = 3.1.4.1
+VER        = 3.2.0
 
 THISAPP    = libjpeg-turbo-$(VER)
 DL_FILE    = $(THISAPP).tar.gz
@@ -40,7 +40,7 @@  objects = $(DL_FILE)
 
 $(DL_FILE) = $(DL_FROM)/$(DL_FILE)
 
-$(DL_FILE)_BLAKE2 = 7e38379b4e3bb168e6ec081be5852f9a7f4680929d42e5cccb0c00632130eee9200afdc9c2ed99250c3ddfc1cd8dd21f60da54e6c48157884c9173ae1b3f9a9f
+$(DL_FILE)_BLAKE2 = c50c985f8b870ab6467181f69e10f3ec2705cb349613b9178b293f136063e302087832d87f793b3d24ab721a2f5d76271760bd244d0766ab3b8cbe48ebf50cfa
 
 install : $(TARGET)