This is more spec-compliant because it does not rely
on dead-code elimination by the compiler. Especially
MSVC has problems with this, as can be seen in
https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/296373.html
or
https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/297022.html
This commit does not eliminate every instance where we rely
on dead code elimination: It only tackles branching to
the initialization of arch-specific dsp code, not e.g. all
uses of CONFIG_ and HAVE_ checks. But maybe it is already
enough to compile FFmpeg with MSVC with whole-programm-optimizations
enabled (if one does not disable too many components).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
They are internal symbols that should not be exported.
based on a patch by Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Diego Biurrun <diego@biurrun.de>
It is an internal swscale function and thus should not be exported.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
As the function arguments change, we also change the function name
to ensure that anyone using this (non public) function doesnt end
with hard to debug crashes. The new name also has a proper prefix.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This will be cleaned up in the next merge
Authorship / merged commits:
commit f668afd489
Author: Janne Grunau <janne-libav@jannau.net>
Date: Fri Apr 15 09:12:34 2011 +0200
swscale: fix "ISO C90 forbids mixed declarations and code" warning
only hit with --enable-runtime-cpudetect
commit 7f2ae5c7af
Author: Janne Grunau <janne-libav@jannau.net>
Date: Fri Apr 15 02:09:44 2011 +0200
swscale: fix compilation with --enable-runtime-cpudetect
commit b6cad3df82
Author: Janne Grunau <janne-libav@jannau.net>
Date: Fri Apr 15 00:31:04 2011 +0200
swscale: correct include path to fix ppc altivec build
commit 6216fc70b7
Author: Luca Barbato <lu_zero@gentoo.org>
Date: Thu Apr 14 22:03:45 2011 +0200
swscale: simplify rgb2rgb templating
MMX is always built. Drop the ifdefs
commit 33a0421bba
Author: Josh Allmann <joshua.allmann@gmail.com>
Date: Wed Apr 13 20:57:32 2011 +0200
swscale: simplify initialization code
Simplify the fallthrough case when no accelerated functions
can be initialized.
commit 735bf19511
Author: Josh Allmann <joshua.allmann@gmail.com>
Date: Wed Apr 13 20:57:31 2011 +0200
swscale: further cleanup swscale.c
Move x86-specific constants out of swscale.c
commit 86330b4c92
Author: Luca Barbato <lu_zero@gentoo.org>
Date: Wed Apr 13 20:57:30 2011 +0200
swscale: partially move the arch specific code left
PPC and x86 code is split off from swscale_template.c. Lots of code is
still duplicated and should be removed later.
Again uniformize the init system to be more similar to the dsputil one.
Unset h*scale_fast in the x86 init in order to make the output
consistent with the previous status. Thanks to Josh for spotting it.
commit c003832883
Author: Luca Barbato <lu_zero@gentoo.org>
Date: Wed Apr 13 20:57:29 2011 +0200
swscale: move away x86 specific code from rgb2rgb
Keep only the plain C code in the main rgb2rgb.c and move the x86
specific optimizations to x86/rgb2rgb.c
Change the initialization pattern a little so some of it can be
factorized to behave more like dsputils.
Conflicts:
libswscale/rgb2rgb.c
libswscale/swscale_template.c
Keep only the plain C code in the main rgb2rgb.c and move the x86
specific optimizations to x86/rgb2rgb.c
Change the initialization pattern a little so some of it can be
factorized to behave more like dsputils.
additionallym deprecate palette8torgb16 and its bgr variant without
replacement. These functions are not meant to be used by applications.
Discussed at: http://comments.gmane.org/gmane.comp.video.ffmpeg.devel/109340
Originally committed as revision 31301 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
They contain exactly the same code as their 16bit variants, so this is
effectively code de-duplication.
Originally committed as revision 31298 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This is of course done with permissions from the authors. The only GPL
component left are MMX optimizations for YUV to RGB conversion.
Originally committed as revision 30965 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
bytes when converting between RGB32 variants.
In particular fix the argb -> rgba and abgr -> bgra conversions.
See the thread:
Subject: [FFmpeg-devel] [RFC] RGB32 / BGR32 ethernal bug
Date: Tue, 26 Jan 2010 01:06:18 +0100
Originally committed as revision 30501 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
Rémi Denis-Courmont
Hao Chen
Andreas Rheinhardt
Martin Storsjö
Martin Vignali
Carl Eugen Hoyos
Diego Biurrun
Andreas Cadhalpun
Michael Niedermayer
Paul B Mahol
Alex Converse
Mans Rullgard
Themaister
Stefano Sabatini
Anton Khirnov
Ronald S. Bultje
tateu
Luca Barbato
Ramiro Polla
Reinhard Tartler
Zuxy Meng