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47 Commits

Author SHA1 Message Date
Diego Biurrun
be1db21ba8 mathops: Drop disabled alternative mid_pred() implementation 2016-08-17 12:16:42 +02:00
Diego Biurrun
f4d581cda3 lavc: Deduplicate zigzag_scan table 2016-03-25 15:23:56 +01:00
Diego Biurrun
f9279ee749 dsputil: Move ff_zigzag_direct and ff_crop_tab declarations to mathops.h 2014-03-22 06:17:29 -07:00
Vittorio Giovara
5397386eff mathops: move macro to the only place it is used 
This helps in disentangling lavf and lavc too.
 2014-03-04 11:45:31 +01:00
Justin Ruggles
9ae53c5860 lavc: add ff_u8_to_s8() for safe type punning of uint8_t to int8_t 2013-09-18 14:10:05 -04:00
Ben Avison
a22ae9f0c5 mpegts: Remove one 64-bit integer modulus operation per packet 
The common case of the pointer having increased by one packet (which results
in no change to the modulus) can be detected with a 64-bit subtraction,
which is far cheaper than a division on many platforms.

           Before          After
           Mean   StdDev   Mean   StdDev  Change
Divisions   248.3  8.8      51.5   7.4    +381.7%
Overall    2773.2 25.6     2372.5 43.1     +16.9%

Signed-off-by: Martin Storsjö <martin@martin.st>
 2013-08-05 19:25:55 +03:00
Diego Biurrun
d5c62122a7 Move av_reverse table to libavcodec 
It is only used in that library.
 2012-10-12 20:39:18 +02:00
Diego Biurrun
9734b8ba56 Move avutil tables only used in libavcodec to libavcodec. 2012-10-11 18:29:36 +02:00
Mans Rullgard
d7a4f8f8b9 Move MASK_ABS macro to libavcodec/mathops.h 
This macro is only used in two places, both in libavcodec, so this
is a more sensible place for it.

Two small tweaks to the macro are made:

- removing the trailing semicolon
- dropping unnecessary 'volatile' from the x86 asm

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2012-08-09 00:58:20 +01:00
Alex Converse
7181c4edee cosmetics: Remove extra newlines at EOF 2012-01-27 17:19:09 -08:00
Mans Rullgard
f59bb3d8f3 mathops: remove undefined behaviour from sign_extend() 
This function intentionally overflows the signed range on
the left shift.  Using this type-punning avoids errors from
the overflow checker without disabling this test globally.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-10-13 15:40:16 +01:00
Mans Rullgard
95912731c2 mathops: use MUL64 macro where it forms part of other ops 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-06-04 20:10:20 +01:00
Diego Biurrun
8d459acc10 Add missing #includes to make headers self-contained. 
This fixes 'make checkheaders'.
 2011-06-04 18:15:50 +02:00
Mans Rullgard
005db47011 mathops: remove ancient confusing comment 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-05-16 21:34:39 +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
Måns Rullgård
cf60d669a6 Add more int packing macros, name them consistently 
Originally committed as revision 23916 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-06-30 22:33:38 +00:00
Ronald S. Bultje
157cb0694a Rename PACK4x8() to PACK4UINT8(). 
Originally committed as revision 23721 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-06-22 20:57:00 +00:00
Ronald S. Bultje
b39a2d19d4 Add a macro to pack 4 bytes into native byte-order so they can be written 
at once using a single 32-bit store.

Originally committed as revision 23715 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-06-22 19:15:27 +00:00
Michael Niedermayer
e969e261a5 Use standard C for implementing sign_extend() and zero_extend(). 
This fixes compilation of probetest

Originally committed as revision 23116 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-05-13 16:32:21 +00:00
Måns Rullgård
48960b8f24 Add zero_extend() function 
Originally committed as revision 21947 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-02-21 21:48:37 +00:00
Måns Rullgård
5e46be96f8 Move NEG_[US]SR32 macros to mathops.h 
Originally committed as revision 21873 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-02-17 23:58:59 +00:00
Måns Rullgård
f2c694af28 Add UMULH() 
This function/macro returns the high half of the unsigned 64-bit
product of two unsigned 32-bit operands.

Originally committed as revision 21463 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-01-26 18:05:55 +00:00
Måns Rullgård
5e7dfb7de1 Move COPY3_IF_LT to lavc/mathops.h 
This obscure macro is only used in motion_est.c so having it in lavc
makes more sense.  See discussion here:
http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2008-November/056561.html

Originally committed as revision 21346 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-01-20 06:01:54 +00:00
Måns Rullgård
b7904f78c1 AVR32: optimised mathops.h 
44% faster MP3 decoding

Originally committed as revision 19667 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-08-17 02:23:53 +00:00
Måns Rullgård
9d48e28f00 MIPS: add MIPS64 and Loongson asm for MAC64/MLS64 
Originally committed as revision 18979 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-28 23:19:32 +00:00
Måns Rullgård
e20a4f53a0 mathops: sort arch-specific #include lines 
Originally committed as revision 18886 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-20 18:49:55 +00:00
Måns Rullgård
26f6a57467 mathops: whitespace cosmetics 
Originally committed as revision 18885 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-20 18:49:52 +00:00
Måns Rullgård
101dfa7d0a Add sign_extend() function to mathops.h 
Originally committed as revision 17738 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-03-03 00:03:55 +00:00
Loren Merritt
6166516d1f re-enable mid_pred asm on x86_64. (broke in r16681) 
Originally committed as revision 17058 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-02-08 17:44:04 +00:00
Diego Biurrun
406792e7b0 cosmetics: Remove pointless period after copyright statement non-sentences. 
Originally committed as revision 16684 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-19 15:46:40 +00:00
Aurelien Jacobs
199436b952 moves mid_pred() into mathops.h (with arch specific code split by directory) 
Originally committed as revision 16681 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-18 22:57:40 +00:00
Aurelien Jacobs
b250f9c66d Change semantic of CONFIG_*, HAVE_* and ARCH_*. 
They are now always defined to either 0 or 1.

Originally committed as revision 16590 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-13 23:44:16 +00:00
Diego Biurrun
79cb09b2f7 consistency cosmetics: Rename POWERPC identifiers to PPC. 
Originally committed as revision 16359 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-27 11:33:26 +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
Måns Rullgård
a2fc0f6a6d ARM: replace "armv4l" with "arm" 
Originally committed as revision 16179 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-17 00:54:54 +00:00
Måns Rullgård
4deaa94639 Add shift argument to MULL() macro 
This replaces use of FRAC_BITS in the MULL() definition with a third
argument specifying the shift amount.  All uses of this macro are
updated to pass FRAC_BITS as third argument.

Originally committed as revision 15921 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-24 09:28:55 +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
Måns Rullgård
ffa978f157 mathops: add MAC64, MLS64, and MLS16 
MAC64: 64 += 32 x 32 (bits)
MLS64: 64 -= 32 x 32
MLS16: 32 -= 16 x 16

Originally committed as revision 14198 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-13 12:22:57 +00:00
Diego Biurrun
245976da2a Use full path for #includes from another directory. 
Originally committed as revision 13098 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-09 11:56:36 +00:00
Måns Rullgård
e6b790f9e7 fix typo ARCH_PPC -> ARCH_POWERPC 
Originally committed as revision 12465 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-17 02:33:02 +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
Marc Hoffman
14da6549a7 Hooking bfin/mathops.h 
Originally committed as revision 10263 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-30 15:16:52 +00:00
Måns Rullgård
99545457bf include all prerequisites in header files 
Originally committed as revision 9344 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-06-16 22:59:13 +00:00
Måns Rullgård
849f10351d rename always_inline to av_always_inline and move to common.h 
Originally committed as revision 7256 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-12-08 00:35:08 +00:00
Diego Biurrun
419b878494 Add ARCH_X86_32 as a new define for 32 bit x86 architectures and change 
the semantics of ARCH_X86 to mean both 32 and 64 bits.

Originally committed as revision 6852 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-11-01 17:01:33 +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
Luca Barbato
99aed7c8fc New single instruction math operation header 
Originally committed as revision 6291 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-09-19 22:22:29 +00:00