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60 Commits

Author SHA1 Message Date
Rémi Denis-Courmont
092ce9712f doc: reference the RISC-V specification 2022-09-13 16:50:43 -03:00
Diego Biurrun
4f9297ac3b build: Prefer NASM assembler over YASM 
NASM is more actively maintained and permits generating dependency information
as a sideeffect of assembling, thus cutting build times in half.

(Cherry-picked from libav commit 57b753b445)

Signed-off-by: James Almer <jamrial@gmail.com>
 2017-06-21 17:00:30 -03:00
James Almer
5a49097b42 Merge commit '2ec9fa5ec60dcd10e1cb10d8b4e4437e634ea428' 
* commit '2ec9fa5ec60dcd10e1cb10d8b4e4437e634ea428':
  idct: Change type of array stride parameters to ptrdiff_t

Merged-by: James Almer <jamrial@gmail.com>
 2017-03-21 14:29:52 -03:00
Diego Biurrun
2ec9fa5ec6 idct: Change type of array stride parameters to ptrdiff_t 
ptrdiff_t is the correct type for array strides and similar.
 2016-09-29 14:48:03 +02:00
Clément Bœsch
8ef57a0d61 Merge commit '41ed7ab45fc693f7d7fc35664c0233f4c32d69bb' 
* commit '41ed7ab45fc693f7d7fc35664c0233f4c32d69bb':
  cosmetics: Fix spelling mistakes

Merged-by: Clément Bœsch <u@pkh.me>
 2016-06-21 21:55:34 +02:00
Vittorio Giovara
41ed7ab45f cosmetics: Fix spelling mistakes 
Signed-off-by: Diego Biurrun <diego@biurrun.de>
 2016-05-04 18:16:21 +02:00
Christophe Gisquet
bc8e044d8c x86/doc/Makefile: DBG=1 to preprocess external asm 
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>
 2015-02-17 13:08:04 +01:00
Michael Niedermayer
581b5f0b9b Merge commit 'e3fcb14347466095839c2a3c47ebecff02da891e' 
* 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>
 2014-07-01 15:22:11 +02:00
Diego Biurrun
e3fcb14347 dsputil: Split off IDCT bits into their own context 2014-06-30 07:58:46 -07:00
Michael Niedermayer
9d6a27d533 Merge commit '57f09608e1600d1cf1679885a46f5004d522d68f' 
* commit '57f09608e1600d1cf1679885a46f5004d522d68f':
  dsputil: Move thirdpel-related bits into their own context

Conflicts:
	libavcodec/svq3.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2014-03-22 23:26:23 +01:00
Diego Biurrun
57f09608e1 dsputil: Move thirdpel-related bits into their own context 2014-03-22 06:17:30 -07:00
Michael Niedermayer
3fc2362aef Merge commit 'b4dd424d96f09f9bafb88e47f37df65dc4529143' 
* 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>
 2014-03-13 22:35:47 +01:00
Diego Biurrun
b4dd424d96 Remove all SPARC architecture optimizations 
SPARC is no longer being used in any multimedia-related fields and the
VIS optimizations only represent a maintenance burden.
 2014-03-13 05:50:28 -07:00
Michael Niedermayer
ac8987591f Merge commit '88bd7fdc821aaa0cbcf44cf075c62aaa42121e3f' 
* 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>
 2013-01-23 17:44:56 +01:00
Diego Biurrun
88bd7fdc82 Drop DCTELEM typedef 
It does not help as an abstraction and adds dsputil dependencies.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
 2013-01-22 18:32:56 -08:00
Michael Niedermayer
78ec407d5a Merge commit '652f5185945c8405fc57aed353286858df8d066f' 
* commit '652f5185945c8405fc57aed353286858df8d066f':
  x86: mmx2 ---> mmxext in comments and messages

Conflicts:
	libswscale/x86/swscale_template.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2012-10-31 14:02:35 +01:00
Diego Biurrun
652f518594 x86: mmx2 ---> mmxext in comments and messages 2012-10-31 00:37:42 +01:00
Michael Niedermayer
db95e559f2 fix another forgotten mplayerhq.hu link 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2011-04-08 01:35:43 +02:00
Michael Niedermayer
a6be21d3ba Revert "replace FFmpeg with Libav in doc/" 
This reverts commit f8a45fa1b1.

Conflicts:

	doc/optimization.txt
 2011-03-17 17:26:45 +01:00
Michael Niedermayer
0fecf2642b Merge remote-tracking branch 'newdev/master' 
Conflicts:
	Changelog
	doc/APIchanges
	doc/optimization.txt
	libavformat/avio.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2011-03-17 17:22:52 +01:00
Janne Grunau
f8a45fa1b1 replace FFmpeg with Libav in doc/ 
unless it stands for ffmpeg the program or is historic
 2011-03-16 22:01:01 +01:00
Johan Andersson
21de920472 Update the url to the site website and change ffmpeg-devel to libav-devel 
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
 2011-03-13 18:45:29 -04:00
Reinhard Tartler
2eed5288d2 Documentation updates for the git migration 
This cleanup patch updates the developer documentation with respect to
the migration to the git scm.
(cherry picked from commit 87800dc2bf)
 2011-02-09 03:33:54 +01:00
Reinhard Tartler
87800dc2bf Documentation updates for the git migration 
This cleanup patch updates the developer documentation with respect to
the migration to the git scm.
 2011-02-08 22:07:02 +01:00
Ramiro Polla
2344dc6bb6 doc: mention xmm clobber macros usage 
Originally committed as revision 25364 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-10-06 02:46:22 +00:00
Ronald S. Bultje
d801f1c848 Update docs regarding writing optimizations: 
- 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
 2010-09-24 14:01:09 +00:00
Ronald S. Bultje
9c193cc47c Fix typo (instruciton -> instruction). 
Originally committed as revision 25157 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-09-22 02:18:03 +00:00
Diego Biurrun
0fa5f24c3b Change mplayerhq.hu references to ffmpeg.org where appropriate. 
Originally committed as revision 16310 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-25 15:49:50 +00:00
Diego Biurrun
a6493a8fbd Rename libavcodec/i386/ --> libavcodec/x86/. 
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
 2008-12-22 09:12:42 +00:00
Diego Pettenò
be449fca79 Convert asm keyword into __asm__. 
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
 2008-10-16 13:34:09 +00:00
Dmitry Antipov
1a592ecc47 Add Intel IWMMXT2 link, patch by Dmitry Antipov, dmantipov yandex ru. 
Originally committed as revision 13467 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-27 13:27:51 +00:00
Mike Melanson
6609f9e2ee minor English corrections 
Originally committed as revision 12171 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-02-21 18:46:49 +00:00
Michael Niedermayer
8144dff032 typos 
Originally committed as revision 12170 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-02-21 18:42:33 +00:00
Michael Niedermayer
7b8c3aedac "General Tips" section 
Originally committed as revision 12168 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-02-21 13:02:31 +00:00
Mike Melanson
07bf0cc9cf clarify previous revision on optimization justification 
Originally committed as revision 11598 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-22 21:57:19 +00:00
Mike Melanson
ac59e7f4b1 Ministry of English Composition edits 
Originally committed as revision 11597 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-22 18:21:12 +00:00
Michael Niedermayer
5e123bd359 Cosmetics to speed up finding sections of interest. 
Originally committed as revision 11596 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-22 14:48:02 +00:00
Michael Niedermayer
8f738eea43 "What speedup justifies an optimization" section 
Originally committed as revision 11595 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-22 14:45:20 +00:00
Diego Biurrun
a1d0b6a277 cosmetics: Fix AltiVec spelling. 
Originally committed as revision 10639 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-10-02 10:34:57 +00:00
Guillaume Poirier
14c2634bcc Fix links to ARM documentation 
Originally committed as revision 10399 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-05 07:49:01 +00:00
Dominik Mierzejewski
71253ce9a6 add a link to VIS instructions whitepaper 
Originally committed as revision 10235 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-26 11:45:09 +00:00
Michael Niedermayer
777bbfddde more sparc asm docs 
Originally committed as revision 10215 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-24 22:10:21 +00:00
Luca Barbato
2c2b3130c2 PowerPC/CELL/Altivec pointers 
Originally committed as revision 10197 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-23 16:40:23 +00:00
Michael Niedermayer
277bb93642 sparc asm docs 
Originally committed as revision 10194 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-23 09:39:14 +00:00
Loren Merritt
2e1ad4a28e simd gmc wasn't impossible. 
Originally committed as revision 10191 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-23 04:56:29 +00:00
Guillaume Poirier
20e570c8e8 links to ARM optimization manuals 
Originally committed as revision 7425 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-01-07 23:39:56 +00:00
Diego Biurrun
2b165e2901 www1.mplayerhq.hu --> lists.mplayerhq.hu 
Originally committed as revision 5459 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-06-09 09:55:57 +00:00
Diego Biurrun
1c1b5a4094 CVS --> Subversion 
Originally committed as revision 5458 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-06-09 09:55:04 +00:00
Diego Biurrun
0a46c9330a Rephrase a paragraph for ease of understanding, suggested by Mans. 
Originally committed as revision 4379 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-06-12 16:11:40 +00:00
Diego Biurrun
c5a44f5715 spelling/phrasing fixes, mostly by Mans 
Originally committed as revision 4378 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-06-11 18:18:13 +00:00