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75 Commits

Author SHA1 Message Date
Michael Niedermayer
f24a515931 shift CABACContext.range right, this reduces the number of shifts needed in get_cabac() and is slightly faster on P3 (and should be much faster on P4 as the P4 except the more recent variants lacks an integer shifter and so shifts have ~10 times longer latency then simple operations like adds) 
Originally committed as revision 6702 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-10-15 20:40:50 +00:00
Michael Niedermayer
68a205edef dehack *ps_state indexing in the branchless decoder 
Originally committed as revision 6683 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-10-13 14:21:25 +00:00
Michael Niedermayer
d61c4e731e make state transition tables global as they are constant and the code is slightly faster that way 
Originally committed as revision 6655 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-10-11 14:44:17 +00:00
Michael Niedermayer
0fa352c7e6 make lps_range a global table its constant anyway (saves 1 addition for accessing it) 
Originally committed as revision 6653 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-10-11 13:21:42 +00:00
Diego Biurrun
0bc2e7f081 BRANCHLESS_CABAD --> BRANCHLESS_CABAC_DECODER 
Originally committed as revision 6623 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-10-10 08:16:41 +00:00
Michael Niedermayer
7822e1c1ff reverse remainder of the failed attempt to optimize *state=c->mps_state[s] 
Originally committed as revision 6609 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-10-09 21:14:16 +00:00
Michael Niedermayer
2e1aee80f4 optimize branchless C CABAC decoder 
Originally committed as revision 6607 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-10-09 20:44:11 +00:00
Michael Niedermayer
c010d69a75 decrease ff_h264_norm_shift[] size 
Originally committed as revision 6596 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-10-09 00:59:42 +00:00
Michael Niedermayer
260ceb6322 branchless renormalization (1% faster get_cabac) old branchless renormalization wasnt faster because gcc was scared of the shift variable (missusing bit variable now) 
Originally committed as revision 6587 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-10-08 13:20:22 +00:00
Michael Niedermayer
99ce10873d 5% faster get_cabac() 
Originally committed as revision 6586 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-10-08 11:24:37 +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
5509bffa88 Update licensing information: The FSF changed postal address. 
Originally committed as revision 4842 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-01-12 22:43:26 +00:00
Diego Biurrun
115329f160 COSMETICS: Remove all trailing whitespace. 
Originally committed as revision 4749 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-12-17 18:14:38 +00:00
Michael Niedermayer
6041c21749 fixing selftest 
Originally committed as revision 3820 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-01-11 03:18:08 +00:00
Michael Niedermayer
caa336b4cc common.c -> bitstream.c (and the single non bitstream func -> utils.c) 
common.h -> common.h/bitstream.h

Originally committed as revision 3777 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-12-29 17:50:25 +00:00
Michael Niedermayer
ec7eb8966c optimization 
Originally committed as revision 3639 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-10-26 03:12:21 +00:00
Michael Niedermayer
bba8334965 overread fix 
Originally committed as revision 3294 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-07-08 00:53:21 +00:00
Michael Niedermayer
e96682e6f4 some of the warning fixes by (Michael Roitzsch <mroi at users dot sourceforge dot net>) 
Originally committed as revision 3140 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-05-18 17:09:46 +00:00
Laurent Aimar
e5017ab870 h264 - progressive I frame CABAC support patch by (Laurent Aimar <fenrir at via dot ecp dot fr>) 
Originally committed as revision 2932 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-03-26 19:35:53 +00:00
Alex Beregszaszi
ed7debda14 removed the obsolete and unused parameters of init_put_bits 
Originally committed as revision 2366 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2003-10-12 21:25:00 +00:00
Michael Niedermayer
5e20f836b3 FFV1 codec (our very simple lossless intra only codec, compresses much better then huffyuv) 
Originally committed as revision 1939 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2003-06-09 02:24:51 +00:00
Michael Niedermayer
8f8c0800f8 cleanup 
Originally committed as revision 1932 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2003-06-06 10:04:15 +00:00
Michael Niedermayer
61ccfcc009 (truncated) unary binerization 
unary k-th order exp golomb binarization

Originally committed as revision 1920 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2003-05-30 01:05:48 +00:00
Michael Niedermayer
d592f67fb6 CABAC 
note, this is just the CABAC (de)coder not complete h264-cabac support

Originally committed as revision 1915 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2003-05-28 18:44:52 +00:00
Roland Scheidegger
14e9ffc1e4 h264: use one table instead of several for cabac functions 
The reason is this is easier for PIC code (in particular on darwin...).
Keep the old names as pointers (static in cabac_functions.h so gcc
knows these are just immediate offsets) so the c code can nicely stay the same
(alternatively could use offsets directly in the functions needing the
tables). This should produce the same code as before with non-pic and better
code (confirmed) with pic.

The assembly uses the new table but still won't work for PIC case.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
 2012-04-28 08:26:12 -07:00