README.chromium - Issue 434123003: Add ARM64 SIMD support to libjpeg_turbo

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Issue 434123003: Add ARM64 SIMD support to libjpeg_turbo (Closed) Base URL: http://src.chromium.org/svn/trunk/deps/third_party/libjpeg_turbo

Patch Set: Created 6 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	7

8 Description:	8 Description:

9 This consists of the components:	9 This consists of the components:

10 * A partial copy of libjpeg-turbo 1.3.1 (r1219);	10 * A partial copy of libjpeg-turbo 1.3.1 (r1219);

11 * Revision r1188 cherry-picked from upstream trunk into config.h;	11 * Revision r1188 cherry-picked from upstream trunk into config.h;

12 * Revision r1220 cherry-picked from upstream trunk into jchuff.c;	12 * Revision r1220 cherry-picked from upstream trunk into jchuff.c;

	13 * Revisions r1108, r1109 and r1333 cherry-picked from upstream trunk for Arm64;

13 * A build file (libjpeg.gyp), and;	14 * A build file (libjpeg.gyp), and;

14 * Patched header files used by Chromium.	15 * Patched header files used by Chromium.

15	16

16 This libjpeg-turbo can replace our libjpeg-6b without any modifications in the	17 This libjpeg-turbo can replace our libjpeg-6b without any modifications in the

17 Chromium code.	18 Chromium code.

18	19

19 Same as our copy of libjpeg-6b, this libjpeg-turbo also added a new file	20 Same as our copy of libjpeg-6b, this libjpeg-turbo also added a new file

20 jpeglibmangler.h and included it from jpeglib.h that changes the names of all	21 jpeglibmangler.h and included it from jpeglib.h that changes the names of all

21 externally visible functions to chromium_* so that we can avoid conflicts that	22 externally visible functions to chromium_* so that we can avoid conflicts that

22 arise when system libraries attempt to use our libjpeg. Also, we applied the	23 arise when system libraries attempt to use our libjpeg. Also, we applied the

23 following changes which are not merged to upstream:	24 following changes which are not merged to upstream:

24	25

25 * Added the 'private_extern' flags on Mac (or the 'hidden' flags on Linux) to	26 * Added the 'private_extern' flags on Mac (or the 'hidden' flags on Linux) to

26 all the global symbols in '.asm' files to prevent making them external ones.	27 all the global symbols in '.asm' files to prevent making them external ones.

27 * Supported motion-JPEG frames that do not have DHT markers.	28 * Supported motion-JPEG frames that do not have DHT markers.

28	29

29 The 'google.patch' file represents our changes from the original	30 The 'google.patch' file represents our changes from the original

30 libjpeg-turbo-1.2.	31 libjpeg-turbo-1.2.

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