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ffmpeg / libavcodec / motion_est_template.c @ 2c656386

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# Date Author Comment
1c3990db 10/28/2004 10:12 AM Michael Niedermayer

H.261 encoder by (Maarten Daniels <maarten dot daniels at luc dot ac dot be>)

Originally committed as revision 3643 to svn://

c08a01a6 09/13/2004 12:37 PM Michael Niedermayer

pre_cmp fix

Originally committed as revision 3458 to svn://

155ec6ed 08/26/2004 08:04 PM Michael Niedermayer

quad tree based motion compensation (currently only 16x16 & 8x8 OBMC blocks, but can be extended to other block sizes easily)
different intra block coding (previous was just an ugly hack)
1.8% bitrate reduction -0.01PSNR (foreman@352x288 qscale=8)
1.5% bitrate reduction +0.05PSNR (foreman@352x288 qscale=1)...

26efc54e 08/22/2004 05:16 PM Michael Niedermayer

4x4 SSE compare function
wavelet based compare functions
make epzs_motion_search() more flexible so it can be used for a wider range of block sizes
make get_penalty_factor() independant of MpegEncContext

Originally committed as revision 3410 to svn://

4994af2f 07/05/2004 02:21 AM Loren Merritt

shape-adaptive diamond + prediction crash patch by (Loren Merritt <lorenm at u dot washington dot edu>)

Originally committed as revision 3287 to svn://

0da6315a 06/14/2004 04:18 PM Michael Niedermayer

fewer overflows

Originally committed as revision 3222 to svn://

ae1dbde1 06/10/2004 10:56 PM Michael Niedermayer

clip input motion vectors
be somewhat more tollerant on invalid input
return INT_MAX instead of -1 for unuseable mv/mb types as that ensures nicely that they arent used
initalize limits earlier for b frames
a few more asserts to check for out of picture vectors...

1f202b0d 05/11/2004 01:38 AM Michael Niedermayer

moving motion estimation specific variables from MpegEncContext -> MotionEstContext

Originally committed as revision 3124 to svn://

af4091f1 05/11/2004 12:58 AM Michael Niedermayer

reduce dependancy between motion estimation and MpegEncContext
this is practically just a s/s->me./c->/

Originally committed as revision 3123 to svn://

2750b827 04/22/2004 03:31 AM Michael Niedermayer

motion estimation cleanup
replace ugly macros by always_inline functions, that way its much more readable and flexible as always_inline can simply be removed while the macros couldnt be
about 0.5 % speedup with default parameters

Originally committed as revision 3037 to svn://

80ee9fc0 02/13/2004 06:39 PM Michael Niedermayer

simplify MV availability check / dont use below last row MV which is always zero

Originally committed as revision 2773 to svn://

9c3d33d6 02/13/2004 05:54 PM Michael Niedermayer

multithreaded/SMP motion estimation
multithreaded/SMP encoding for MPEG1/MPEG2/MPEG4/H263
all pthread specific code is in pthread.c
to try it, run configure --enable-pthreads and ffmpeg ... -threads <num>
the internal thread API is a simple AVCodecContext.execute() callback which executes a given function pointer with different arguments and returns after finishing all, that way no mutexes or other thread-mess is needed outside pthread.c...

8f2ab833 01/10/2004 04:04 PM Michael Niedermayer

copyright year update of the files i touched and remembered, things look annoyingly unmaintained otherwise

Originally committed as revision 2686 to svn://

bb198e19 12/30/2003 04:07 PM Michael Niedermayer

interlaced motion estimation
interlaced mpeg2 encoding
P & B frames
rate distored interlaced mb decission
alternate scantable support
4mv encoding fixes (thats also why the regression tests change)
passing height to most dsp functions
interlaced mpeg4 encoding (no direct mode MBs yet)...

802f454e 08/24/2003 10:28 PM Fabrice Bellard

removed unused variable

Originally committed as revision 2162 to svn://

3db320ea 05/15/2003 01:34 AM Falk H├╝ffner

Warning fixes.

Originally committed as revision 1884 to svn://

7bc9090a 04/10/2003 01:18 PM Michael Niedermayer

simplified adressing of most mb based arrays (mb_x + mb_y*s->mb_stride) now instead of mb_x + mb_y*mb_width and 1+mb_x + (1+mb_y)*(mb_width+2) and ... mixture
more direct use of the new mb_type stuff instead of codec specific stuff
runtime mb_type debug output h264/h263 variants/mpeg1/2/4...

30952237 03/31/2003 11:13 AM Michael Niedermayer

some static > dynamic alloc & 16>8 bit

Originally committed as revision 1722 to svn://

983e3246 03/06/2003 11:32 AM Michael Niedermayer

per file doxy

Originally committed as revision 1634 to svn://

67725183 01/19/2003 05:55 PM Michael Niedermayer

finetuneing thresholds/factors
nicer mb decission
a few minor improvements & fixes

Originally committed as revision 1472 to svn://

1d0eab1d 01/18/2003 01:37 AM Michael Niedermayer


Originally committed as revision 1469 to svn://

826f429a 01/05/2003 03:57 PM Michael Niedermayer

qpel in mmx2/3dnow
qpel refinement quality parameter

Originally committed as revision 1393 to svn://

f931ff7b 01/02/2003 12:48 PM Michael Niedermayer

pre motion estimation cleanup/bugfix

Originally committed as revision 1390 to svn://

b07a5980 01/01/2003 02:36 PM Michael Niedermayer

shape adaptive diamonds for EPZS
user specified amount of MV predictors from the last frame
b frame MV predictor scaling fixed

Originally committed as revision 1384 to svn://

1457ab52 12/27/2002 11:51 PM Michael Niedermayer

qpel encoding
4mv+b frames encoding finally fixed
chroma ME
5 comparission functions for ME
b frame encoding speedup
wmv2 codec (unfinished)
user specified diamond size for EPZS

Originally committed as revision 1365 to svn://