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32 Commits

Author SHA1 Message Date
Ronald S. Bultje
a1245d5ca1 mathematics: Don't use division by zero in NAN/INFINITY macros 
Some compilers, MSVC among them, don't recognize the divisions by
zero as meaning infinity/nan.

These macros should, according to the standard, expand to constant
expressions, but this shouldn't matter for our usage.

Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-07-01 19:06:13 +03:00
Janne Grunau
a2b186a188 mathematics.h: remove a couple of math defines 
While these defines are not defined by the C standard they are
standardized as X/Open System Interfaces Extension. We use the
appropiate _XOPEN_SOURCE define to make them available. They
seem to be available on all FATE configs since the constants
are used in files where mathematics.h is not included.
 2012-06-20 15:45:21 +02:00
Justin Ruggles
0b42a9388c avutil: add av_rescale_q_rnd() to allow different rounding 2012-02-20 15:08:40 -05:00
Luca Barbato
757cd8d876 doxy: provide a start page and document libavutil 
Introduce a basic layout, the subpages are currently left empty.

Split libavutil in multiple groups as example of the structure
 2011-11-22 17:16:02 +01:00
Mans Rullgard
2912e87a6c Replace FFmpeg with Libav in licence headers 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-03-19 13:33:20 +00:00
Stefano Sabatini
448524777a Add the M_PHI constant, contains an approximation of the golden ratio 
irrational number.

Originally committed as revision 24439 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-07-22 22:05:21 +00:00
Måns Rullgård
49bd8e4b84 Fix grammar errors in documentation 
Originally committed as revision 23904 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-06-30 15:38:06 +00:00
Stefano Sabatini
297084275c Fix av_compare_mod() doxy. 
Originally committed as revision 23593 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-06-13 09:06:50 +00:00
Michael Niedermayer
65db0587a8 Add av_compare_mod() 
Originally committed as revision 23551 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-06-09 17:27:42 +00:00
Alex Converse
b9f60bd8fd Add M_SQRT2 to the constants in mathematics.h. 
Originally committed as revision 22825 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-04-09 23:29:47 +00:00
Benoit Fouet
32e543f866 Replace @returns by @return. 
Originally committed as revision 22729 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-03-30 15:50:57 +00:00
Måns Rullgård
2ed6f39944 Replace many includes of libavutil/common.h with what is actually needed 
This reduces the number of false dependencies on header files and
speeds up compilation.

Originally committed as revision 22407 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-03-09 17:39:19 +00:00
Måns Rullgård
94a5218c10 More accurate value for log2(10) 
Originally committed as revision 21946 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-02-21 20:47:10 +00:00
Måns Rullgård
e4a35244fa Replace log2f(10) with a constant 
Originally committed as revision 21924 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-02-20 20:13:48 +00:00
Michael Niedermayer
78b0182375 av_compare_ts() 
Originally committed as revision 21671 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-02-07 16:26:50 +00:00
Michael Niedermayer
bac24dd2a5 2nd try on documenting av_gcd(). 
Originally committed as revision 20939 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-12-27 14:40:49 +00:00
Michael Niedermayer
03703cb3d1 Document av_gcd(). 
Originally committed as revision 20935 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-12-27 12:20:06 +00:00
Måns Rullgård
bd41c06f18 Define INFINITIY and NAN in mathematics.h if missing 
Originally committed as revision 19611 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-08-10 01:27:27 +00:00
Diego Biurrun
b69201a82c Add common.h #include, necessary for av_const. 
Originally committed as revision 16844 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-28 08:50:10 +00:00
Diego Biurrun
89c9ff504b spelling/grammar/consistency review part I 
Originally committed as revision 16840 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-28 00:16:05 +00:00
Aurelien Jacobs
9ce6c13879 export gcd function as av_gcd() 
Originally committed as revision 16653 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-17 11:13:33 +00:00
Stefano Sabatini
987903826b Globally rename the header inclusion guard names. 
Consistently apply this rule: the guard name is obtained from the
filename by stripping the leading "lib", converting '/' and '.'  to
'_' and uppercasing the resulting name. Guard names in the root
directory have to be prefixed by "FFMPEG_".

Originally committed as revision 15120 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-31 07:39:47 +00:00
Aurelien Jacobs
5af4f1f3e3 move M_PI definition along with other math definitions 
Originally committed as revision 14727 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-13 16:01:21 +00:00
Aurelien Jacobs
d1a12956a0 define some math constants so as not to depend on _XOPEN_SOURCE 
Originally committed as revision 14725 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-13 10:04:59 +00:00
Zuxy Meng
85074d3c93 Reapply r12489: Add pure, const and malloc attributes to proper functions 
in libavutil.
Fix a compilation failure in r12489.

Originally committed as revision 12498 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-19 06:17:43 +00:00
Benoit Fouet
2119bb8f51 revert r12489. 
Originally committed as revision 12490 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-18 16:29:47 +00:00
Zuxy Meng
6544f48f03 Pure, const and malloc attributes to libavutil. 
Patch by Zuxy Meng: zuxy meng gmail com
Original thread:
[FFmpeg-devel] [PATCH] Pure, const and malloc attributes to libavutil
Date: 03/18/2008 6:09 AM

Originally committed as revision 12489 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-18 15:27:15 +00:00
Diego Biurrun
6ef2912879 Add missing stdint.h #include to headers that use it. 
Originally committed as revision 12429 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-13 00:20:15 +00:00
Diego Biurrun
5b21bdabe4 Add FFMPEG_ prefix to all multiple inclusion guards. 
Originally committed as revision 10765 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-10-17 09:37:46 +00:00
Diego Biurrun
b78e7197a8 Change license headers to say 'FFmpeg' instead of 'this program/this library' 
and fix GPL/LGPL version mismatches.

Originally committed as revision 6577 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-10-07 15:30:46 +00:00
Diego Biurrun
04d7f60143 Add official LGPL license headers to the files that were missing them. 
Originally committed as revision 6219 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-09-10 14:02:42 +00:00
Alexander Strasser
c11c2bc20b libavutil: Utility code from libavcodec moved to a separate library. 
Originally committed as revision 4489 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-08-01 20:07:05 +00:00