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path: root/doc/optimization.txt
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2016-06-21Merge commit '41ed7ab45fc693f7d7fc35664c0233f4c32d69bb'Clément Bœsch
* commit '41ed7ab45fc693f7d7fc35664c0233f4c32d69bb': cosmetics: Fix spelling mistakes Merged-by: Clément Bœsch <u@pkh.me>
2016-05-04cosmetics: Fix spelling mistakesVittorio Giovara
Signed-off-by: Diego Biurrun <diego@biurrun.de>
2015-02-17x86/doc/Makefile: DBG=1 to preprocess external asmChristophe Gisquet
The macro hell sometimes make it difficult to trace the source of an error, so it is easier to analyze the preprocessed output. This patch makes this automatical by specifying DBG=1 on the command line: a file ffmpeg/dir/file.asm gets preprocessed to builddir/dir/file.dbg.asm, which is then compiled. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-07-01Merge commit 'e3fcb14347466095839c2a3c47ebecff02da891e'Michael Niedermayer
* commit 'e3fcb14347466095839c2a3c47ebecff02da891e': dsputil: Split off IDCT bits into their own context Conflicts: configure libavcodec/aic.c libavcodec/arm/Makefile libavcodec/arm/dsputil_init_arm.c libavcodec/arm/dsputil_init_armv6.c libavcodec/asvdec.c libavcodec/dnxhdenc.c libavcodec/dsputil.c libavcodec/dvdec.c libavcodec/dxva2_mpeg2.c libavcodec/intrax8.c libavcodec/mdec.c libavcodec/mjpegdec.c libavcodec/mjpegenc_common.h libavcodec/mpegvideo.c libavcodec/ppc/dsputil_altivec.h libavcodec/ppc/dsputil_ppc.c libavcodec/ppc/idctdsp.c libavcodec/x86/Makefile libavcodec/x86/dsputil_init.c libavcodec/x86/dsputil_mmx.c libavcodec/x86/dsputil_x86.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-06-30dsputil: Split off IDCT bits into their own contextDiego Biurrun
2014-03-23Merge commit '57f09608e1600d1cf1679885a46f5004d522d68f'Michael Niedermayer
* commit '57f09608e1600d1cf1679885a46f5004d522d68f': dsputil: Move thirdpel-related bits into their own context Conflicts: libavcodec/svq3.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-03-22dsputil: Move thirdpel-related bits into their own contextDiego Biurrun
2014-03-14Merge commit 'b4dd424d96f09f9bafb88e47f37df65dc4529143'Michael Niedermayer
* commit 'b4dd424d96f09f9bafb88e47f37df65dc4529143': Remove all SPARC architecture optimizations Conflicts: Makefile configure libavcodec/sparc/dsputil_vis.c libavcodec/sparc/dsputil_vis.h libavcodec/sparc/hpeldsp_vis.c libavcodec/sparc/simple_idct_vis.c libavcodec/sparc/vis.h libswscale/sparc/yuv2rgb_vis.c libswscale/swscale_internal.h If someone wants to maintain these (or other) SPARC optimizations, please contact me or ffmpeg-devel. I am happy to revert this removial if theres someone considering to maintain this code. Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-03-13Remove all SPARC architecture optimizationsDiego Biurrun
SPARC is no longer being used in any multimedia-related fields and the VIS optimizations only represent a maintenance burden.
2013-01-23Merge commit '88bd7fdc821aaa0cbcf44cf075c62aaa42121e3f'Michael Niedermayer
* commit '88bd7fdc821aaa0cbcf44cf075c62aaa42121e3f': Drop DCTELEM typedef Conflicts: libavcodec/alpha/dsputil_alpha.h libavcodec/alpha/motion_est_alpha.c libavcodec/arm/dsputil_init_armv6.c libavcodec/bfin/dsputil_bfin.h libavcodec/bfin/pixels_bfin.S libavcodec/cavs.c libavcodec/cavsdec.c libavcodec/dct-test.c libavcodec/dnxhdenc.c libavcodec/dsputil.c libavcodec/dsputil.h libavcodec/dsputil_template.c libavcodec/eamad.c libavcodec/h264_cavlc.c libavcodec/h264idct_template.c libavcodec/mpeg12.c libavcodec/mpegvideo.c libavcodec/mpegvideo.h libavcodec/mpegvideo_enc.c libavcodec/ppc/dsputil_altivec.c libavcodec/proresdsp.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-23Drop DCTELEM typedefDiego Biurrun
It does not help as an abstraction and adds dsputil dependencies. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2012-10-31Merge commit '652f5185945c8405fc57aed353286858df8d066f'Michael Niedermayer
* commit '652f5185945c8405fc57aed353286858df8d066f': x86: mmx2 ---> mmxext in comments and messages Conflicts: libswscale/x86/swscale_template.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-10-31x86: mmx2 ---> mmxext in comments and messagesDiego Biurrun
2011-04-08fix another forgotten mplayerhq.hu linkMichael Niedermayer
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2011-03-17Revert "replace FFmpeg with Libav in doc/"Michael Niedermayer
This reverts commit f8a45fa1b1764b34d4263eacd93411e8ba0484a4. Conflicts: doc/optimization.txt
2011-03-17Merge remote-tracking branch 'newdev/master'Michael Niedermayer
Conflicts: Changelog doc/APIchanges doc/optimization.txt libavformat/avio.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
2011-03-17replace FFmpeg with Libav in doc/Janne Grunau
unless it stands for ffmpeg the program or is historic
2011-03-14Update the url to the site website and change ffmpeg-devel to libav-develJohan Andersson
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2011-02-09Documentation updates for the git migrationReinhard Tartler
This cleanup patch updates the developer documentation with respect to the migration to the git scm. (cherry picked from commit 87800dc2bf8f2724a99e51bb079ad7fb4b9dfd3b)
2011-02-09Documentation updates for the git migrationReinhard Tartler
This cleanup patch updates the developer documentation with respect to the migration to the git scm.
2010-10-06doc: mention xmm clobber macros usageRamiro Polla
Originally committed as revision 25364 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-09-24Update docs regarding writing optimizations:Ronald S. Bultje
- mention clobber-marking of xmm registers, - some notes on external vs. inline asm, including tips on which to use for what situation and to not rewrite+improve in the same patch (as with C code) - some more best-practice guidelines See "[PATCH] update doc/optimization.txt" thread on ML. Originally committed as revision 25170 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-09-22Fix typo (instruciton -> instruction).Ronald S. Bultje
Originally committed as revision 25157 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-25Change mplayerhq.hu references to ffmpeg.org where appropriate.Diego Biurrun
Originally committed as revision 16310 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-22Rename libavcodec/i386/ --> libavcodec/x86/.Diego Biurrun
It contains optimizations that are not specific to i386 and libavutil uses this naming scheme already. Originally committed as revision 16270 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-10-16Convert asm keyword into __asm__.Diego Pettenò
Neither the asm() nor the __asm__() keyword is part of the C99 standard, but while GCC accepts the former in C89 syntax, it is not accepted in C99 unless GNU extensions are turned on (with -fasm). The latter form is accepted in any syntax as an extension (without requiring further command-line options). Sun Studio C99 compiler also does not accept asm() while accepting __asm__(), albeit reporting warnings that it's not valid C99 syntax. Originally committed as revision 15627 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-27Add Intel IWMMXT2 link, patch by Dmitry Antipov, dmantipov yandex ru.Dmitry Antipov
Originally committed as revision 13467 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-02-21minor English correctionsMike Melanson
Originally committed as revision 12171 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-02-21typosMichael Niedermayer
Originally committed as revision 12170 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-02-21"General Tips" sectionMichael Niedermayer
Originally committed as revision 12168 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-23clarify previous revision on optimization justificationMike Melanson
Originally committed as revision 11598 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-22Ministry of English Composition editsMike Melanson
Originally committed as revision 11597 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-22Cosmetics to speed up finding sections of interest.Michael Niedermayer
Originally committed as revision 11596 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-22"What speedup justifies an optimization" sectionMichael Niedermayer
Originally committed as revision 11595 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-10-02cosmetics: Fix AltiVec spelling.Diego Biurrun
Originally committed as revision 10639 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-09-05Fix links to ARM documentationGuillaume Poirier
Originally committed as revision 10399 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-26add a link to VIS instructions whitepaperDominik Mierzejewski
Originally committed as revision 10235 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-25more sparc asm docsMichael Niedermayer
Originally committed as revision 10215 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-23PowerPC/CELL/Altivec pointersLuca Barbato
Originally committed as revision 10197 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-23sparc asm docsMichael Niedermayer
Originally committed as revision 10194 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-23simd gmc wasn't impossible.Loren Merritt
Originally committed as revision 10191 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-01-08links to ARM optimization manualsGuillaume Poirier
Originally committed as revision 7425 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-06-09www1.mplayerhq.hu --> lists.mplayerhq.huDiego Biurrun
Originally committed as revision 5459 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-06-09CVS --> SubversionDiego Biurrun
Originally committed as revision 5458 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-06-12Rephrase a paragraph for ease of understanding, suggested by Mans.Diego Biurrun
Originally committed as revision 4379 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-06-11spelling/phrasing fixes, mostly by MansDiego Biurrun
Originally committed as revision 4378 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-06-11spelling/grammar/wording/phrasingDiego Biurrun
Originally committed as revision 4376 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-06-11Cosmetics: Removed trailing whitespace, converted tabs to spaces.Diego Biurrun
Originally committed as revision 4375 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-04-11changed the mailinglist pointers to the new place (mplayerhq)Alex Beregszaszi
Originally committed as revision 4122 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-04-10testing cvslogMichael Niedermayer
Originally committed as revision 4118 to svn://svn.ffmpeg.org/ffmpeg/trunk
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