README.chromium - Issue 1270213002: Add support for decoding to 565 to libjpeg_turbo

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Issue 1270213002: Add support for decoding to 565 to libjpeg_turbo (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/libjpeg_turbo.git@master

Patch Set: Link crbug in the README Created 5 years, 4 months ago

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1 Name: libjpeg-turbo	1 Name: libjpeg-turbo

2 URL: http://sourceforge.net/projects/libjpeg-turbo/	2 URL: http://sourceforge.net/projects/libjpeg-turbo/

3 Version: 1.3.1	3 Version: 1.3.1

4 License: Custom license	4 License: Custom license

5 License File: LICENSE.txt	5 License File: LICENSE.txt

6 Security Critical: yes	6 Security Critical: yes

7 License Android Compatible: yes	7 License Android Compatible: yes

8	8

9 Description:	9 Description:

10 This consists of the components:	10 This consists of the components:

11 * A partial copy of libjpeg-turbo 1.3.1 (r1219);	11 * A partial copy of libjpeg-turbo 1.3.1 (r1219);

12 * Revision r1188 cherry-picked from upstream trunk into config.h to fix	12 * Revision r1188 cherry-picked from upstream trunk into config.h to fix

13 compiler warning on newer versions of gcc;	13 compiler warning on newer versions of gcc;

14 * Revision r1220 cherry-picked from upstream trunk into jchuff.c to use	14 * Revision r1220 cherry-picked from upstream trunk into jchuff.c to use

15 clz/bsr instructions on ARM for bit counting rather than the lookup table	15 clz/bsr instructions on ARM for bit counting rather than the lookup table

16 (reduces memory footprint and can improve performance in some cases);	16 (reduces memory footprint and can improve performance in some cases);

17 * Revisions r1108, r1109, r1333, r1375, r1386, r1389 and r1390 cherry-picked	17 * Revisions r1108, r1109, r1333, r1375, r1386, r1389 and r1390 cherry-picked

18 from upstream trunk for Arm64 NEON SIMD support;	18 from upstream trunk for Arm64 NEON SIMD support;

19 * CR Bug 515694: Revisions r1582, r1583, r1586, r1587, r1591, and	19 * Revisions r1582, r1583, r1586, r1587, r1591, and

20 commit 91eceba0a132a3fc70388a82c75616e67725a93a (code moved to GitHub)	20 commit 91eceba0a132a3fc70388a82c75616e67725a93a (code moved to GitHub)

21 cherry-picked from upstream trunk for partial decoding optimization.	21 cherry-picked from upstream trunk for partial decoding optimization;

	22 http://crbug.com/515694

	23 * Revisions r1295, r1385, r1398, and r1402 (r1386 is also required but has

	24 already been cherry-picked) cherry-picked from upstream trunk to enable

	25 decoding to 565 as a memory optimization;

	26 http://crbug.com/516761

22 * A build file (libjpeg.gyp), and;	27 * A build file (libjpeg.gyp), and;

23 * Patched header files used by Chromium.	28 * Patched header files used by Chromium.

24	29

25 More details on cherry-picked revisions and commits can be found at:	30 More details on cherry-picked revisions and commits can be found at:

26 https://sourceforge.net/p/libjpeg-turbo/code/commit_browser	31 https://sourceforge.net/p/libjpeg-turbo/code/commit_browser

27 https://github.com/libjpeg-turbo/libjpeg-turbo/commits/master	32 https://github.com/libjpeg-turbo/libjpeg-turbo/commits/master

28	33

29 This libjpeg-turbo can replace our libjpeg-6b without any modifications in the	34 This libjpeg-turbo can replace our libjpeg-6b without any modifications in the

30 Chromium code.	35 Chromium code.

31	36

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43 this to match the exact behavior of jpeg_huff_decode().	48 this to match the exact behavior of jpeg_huff_decode().

44 http://crbug.com/398235	49 http://crbug.com/398235

45 * Fixed an issue with the ARM NEON build.	50 * Fixed an issue with the ARM NEON build.

46 http://crbug.com/451035	51 http://crbug.com/451035

47	52

48 Refer to working-with-nested-repos [1] for details of how to setup your git	53 Refer to working-with-nested-repos [1] for details of how to setup your git

49 svn client to update the code (for making local changes, cherry picking from	54 svn client to update the code (for making local changes, cherry picking from

50 upstream, etc).	55 upstream, etc).

51	56

52 [1] https://www.chromium.org/developers/how-tos/get-the-code/working-with-nested -repos	57 [1] https://www.chromium.org/developers/how-tos/get-the-code/working-with-nested -repos

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