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ffmpeg / libavcodec / snow.c @ 94d85eaf

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# Date Author Comment
086bfd25 06/04/2006 09:54 PM Michael Niedermayer

support doing motion estimation and compensation without any residual transform or coding
this is usefull for filters which need ME/MC

Originally committed as revision 5456 to svn://svn.ffmpeg.org/ffmpeg/trunk
7374794a 05/30/2006 07:45 PM Loren Merritt

Snow: don't try to encode lossless with 9/7 wavelet, because it isn't lossless.

Originally committed as revision 5433 to svn://svn.ffmpeg.org/ffmpeg/trunk
d4b287ed 05/30/2006 07:40 PM Loren Merritt

Snow: cosmetics

Originally committed as revision 5432 to svn://svn.ffmpeg.org/ffmpeg/trunk
85fc0e75 05/30/2006 04:42 PM Loren Merritt

Snow: scale predicted mv based on which reference frame the neighbors used.

Originally committed as revision 5431 to svn://svn.ffmpeg.org/ffmpeg/trunk
7f21a9a7 05/30/2006 06:49 AM Loren Merritt

Snow: cosmetics

Originally committed as revision 5428 to svn://svn.ffmpeg.org/ffmpeg/trunk
871371a7 05/30/2006 05:44 AM Loren Merritt

Snow: fix subband weighting in wavelet cmp functions. use 32x32 cmp in iterative motion estimation.

Originally committed as revision 5427 to svn://svn.ffmpeg.org/ffmpeg/trunk
383f62fd 05/30/2006 04:51 AM Loren Merritt

Snow: 10l. 1pass ratecontrol failed to set snow's internal quant.

Originally committed as revision 5426 to svn://svn.ffmpeg.org/ffmpeg/trunk
8c36eaaa 05/28/2006 09:44 PM Loren Merritt

Snow multiple reference frames
(bitstream is not backwards compatible, even if refs aren't used)

Originally committed as revision 5417 to svn://svn.ffmpeg.org/ffmpeg/trunk
4e64bead 05/28/2006 12:38 PM Loren Merritt

Snow 1pass ratecontrol

Originally committed as revision 5416 to svn://svn.ffmpeg.org/ffmpeg/trunk
3a1a7e32 05/13/2006 10:45 AM Michael Niedermayer

sanity checks, some might have been exploitable ...

Originally committed as revision 5369 to svn://svn.ffmpeg.org/ffmpeg/trunk
561a18d3 03/20/2006 05:52 AM Robert Edele

Snow mmx + sse2 part 2

Patch by Robert Edele, yartrebo <<at>> earthlink <<dot>> net

Originally committed as revision 5184 to svn://svn.ffmpeg.org/ffmpeg/trunk
059715a4 03/16/2006 07:18 PM Robert Edele

First part of a series of speed-enchancing patches.
This one sets up a snow.h and makes snow use the dsputil function pointer
framework to access the three functions that will be implemented in asm
in the other parts of the patchset.
Patch by Robert Edele < yartrebo AH earthlink POIS net>...
fc8c4992 03/14/2006 12:22 AM Michael Niedermayer

dont pass intra flag if its always 0

Originally committed as revision 5164 to svn://svn.ffmpeg.org/ffmpeg/trunk
8f8ae495 03/13/2006 01:27 AM Loren Merritt

seed iterative_me with mvs from conventional search.
+15% speed, +.1 dB

Originally committed as revision 5158 to svn://svn.ffmpeg.org/ffmpeg/trunk
07674d51 03/13/2006 01:26 AM Loren Merritt

obey vqscale in 2nd pass

Originally committed as revision 5157 to svn://svn.ffmpeg.org/ffmpeg/trunk
e7c8206e 03/11/2006 12:19 AM Michael Niedermayer

av_free -> av_freep

Originally committed as revision 5145 to svn://svn.ffmpeg.org/ffmpeg/trunk
87f20c2f 03/11/2006 12:18 AM Michael Niedermayer

fix %8 != 0 w/h

Originally committed as revision 5144 to svn://svn.ffmpeg.org/ffmpeg/trunk
ceaf1909 01/30/2006 11:33 PM Dieter

add static keyword to some functions
patch by Dieter <freebsd at sopwith solgatos com>

Originally committed as revision 4913 to svn://svn.ffmpeg.org/ffmpeg/trunk
4f59b684 01/24/2006 10:33 AM Diego Biurrun

Remove all stray tabs and trailing whitespace, this time for good.

Originally committed as revision 4891 to svn://svn.ffmpeg.org/ffmpeg/trunk
48d1b9a1 01/21/2006 02:35 AM Loren Merritt

fix convergence of snow iterative_me

Originally committed as revision 4876 to svn://svn.ffmpeg.org/ffmpeg/trunk
3de79d0d 01/21/2006 02:33 AM Loren Merritt

revert 1.83 because it's not needed

Originally committed as revision 4875 to svn://svn.ffmpeg.org/ffmpeg/trunk
d3ac6ed6 01/19/2006 09:21 AM Loren Merritt

detect when iterative_me fails to converge, and stop searching

Originally committed as revision 4868 to svn://svn.ffmpeg.org/ffmpeg/trunk
b104969f 01/17/2006 08:27 AM Loren Merritt

obmc-aware 4mv

Originally committed as revision 4864 to svn://svn.ffmpeg.org/ffmpeg/trunk
5509bffa 01/12/2006 10:43 PM Diego Biurrun

Update licensing information: The FSF changed postal address.

Originally committed as revision 4842 to svn://svn.ffmpeg.org/ffmpeg/trunk
c8a596d2 01/12/2006 09:37 PM Michael Niedermayer

bugs found by valgrind

Originally committed as revision 4841 to svn://svn.ffmpeg.org/ffmpeg/trunk
1015631b 01/12/2006 05:47 AM Loren Merritt

faster iterative_me: avoid duplicate mc of neighboring blocks.

Originally committed as revision 4839 to svn://svn.ffmpeg.org/ffmpeg/trunk
80e44bc3 01/08/2006 01:50 AM Michael Niedermayer

use h264 MC functions for 2xX Xx2 blocks in snow too

Originally committed as revision 4824 to svn://svn.ffmpeg.org/ffmpeg/trunk
2692ceab 01/07/2006 06:34 PM Michael Niedermayer

use h264 MC functions for rectangular blocks too

Originally committed as revision 4821 to svn://svn.ffmpeg.org/ffmpeg/trunk
39277cf9 01/07/2006 03:39 AM Michael Niedermayer

10l (assertion failure)

Originally committed as revision 4819 to svn://svn.ffmpeg.org/ffmpeg/trunk
3b6ab26c 01/04/2006 10:34 PM Michael Niedermayer

cleanup
fix 4mv playback distortions

Originally committed as revision 4813 to svn://svn.ffmpeg.org/ffmpeg/trunk
003cd80d 12/30/2005 10:41 PM François Revol

:%s/check_block_2p/check_block_inter/g

Originally committed as revision 4794 to svn://svn.ffmpeg.org/ffmpeg/trunk
52137f2f 12/30/2005 09:05 PM François Revol

this fixes compilation with gcc 2.95 which seems to not like array casting... special case inline of check_block which makes the array and passes it

Originally committed as revision 4793 to svn://svn.ffmpeg.org/ffmpeg/trunk
13705b69 12/30/2005 03:12 PM Michael Niedermayer

mem corruption fix

Originally committed as revision 4789 to svn://svn.ffmpeg.org/ffmpeg/trunk
d6f41eed 12/29/2005 02:17 AM Michael Niedermayer

4mv + iter ME 10l fix (still not bugfree but better)

Originally committed as revision 4783 to svn://svn.ffmpeg.org/ffmpeg/trunk
735f9f34 12/28/2005 11:45 PM Michael Niedermayer

10l

Originally committed as revision 4782 to svn://svn.ffmpeg.org/ffmpeg/trunk
51d6a3cf 12/28/2005 03:43 PM Michael Niedermayer

iterative overlapped block based motion estimation for snow

Originally committed as revision 4781 to svn://svn.ffmpeg.org/ffmpeg/trunk
bb270c08 12/22/2005 01:10 AM Diego Biurrun

COSMETICS: tabs --> spaces, some prettyprinting

Originally committed as revision 4764 to svn://svn.ffmpeg.org/ffmpeg/trunk
daba69b2 12/19/2005 06:26 PM Michael Niedermayer

10l

Originally committed as revision 4758 to svn://svn.ffmpeg.org/ffmpeg/trunk
115329f1 12/17/2005 06:14 PM Diego Biurrun

COSMETICS: Remove all trailing whitespace.

Originally committed as revision 4749 to svn://svn.ffmpeg.org/ffmpeg/trunk
4393e639 12/03/2005 02:20 PM Michael Niedermayer

check block_max_depth (fixes crash)

Originally committed as revision 4718 to svn://svn.ffmpeg.org/ffmpeg/trunk
91aa4e33 12/03/2005 03:07 AM Michael Niedermayer

make selftest code compile again

Originally committed as revision 4717 to svn://svn.ffmpeg.org/ffmpeg/trunk
62ab0b78 09/21/2005 11:09 PM Aurelien Jacobs

fix unused variable warnings

Originally committed as revision 4609 to svn://svn.ffmpeg.org/ffmpeg/trunk
cc884a35 08/21/2005 10:17 PM Michael Niedermayer

reducing minimum supported picture size

Originally committed as revision 4535 to svn://svn.ffmpeg.org/ffmpeg/trunk
9cd81798 05/08/2005 08:15 PM Michael Niedermayer

#defines for strict_std_compliance and split between inofficial extensions and non standarized things

Originally committed as revision 4205 to svn://svn.ffmpeg.org/ffmpeg/trunk
644a9262 04/25/2005 06:29 PM Michael Niedermayer

PIX_FMT_NONE and related fixes

Originally committed as revision 4161 to svn://svn.ffmpeg.org/ffmpeg/trunk
66b32bf2 04/25/2005 10:03 AM Yartrebo

tighter snow slicing patch by (Yartrebo || yartrebo earthlink net)

Originally committed as revision 4159 to svn://svn.ffmpeg.org/ffmpeg/trunk
160d679c 04/24/2005 05:21 PM Mike Melanson

Ministry of English Composition, reporting for duty (and the word is "skipped", not "skiped"; "skiped" would rhyme with "hyped")

Originally committed as revision 4153 to svn://svn.ffmpeg.org/ffmpeg/trunk
8c2515bb 04/17/2005 09:27 AM Yartrebo

fix overflow in mc_block() patch by (Yartrebo )yartrebo earthlink net

Originally committed as revision 4132 to svn://svn.ffmpeg.org/ffmpeg/trunk
b44985ba 04/15/2005 01:24 PM Michael Niedermayer

store the number of runs to avoid storing the last run value
about 10% lower bitrate for -qscale 32 (forman & some music video)
worst case bitrate increase <0.1% (lossless or low qscale)
and now the bad news, even though this just adds a single subtraction and an if() into the medium sized unpack_coeffs() loop and the if() will only be false once per unpac_coeff() call, gcc produces 50% slower code, i didnt look at the generated asm yet, not sure if i want to ......
2cd34043 04/15/2005 05:54 AM Loren Merritt

allow 2pass ratecontrol. also fixes psnr displayed by mencoder.

Originally committed as revision 4130 to svn://svn.ffmpeg.org/ffmpeg/trunk
cbb1d2b1 04/14/2005 08:54 PM Michael Niedermayer

replace complicated pointer dereference + index stuff by pointers in unpack_coeffs()

Originally committed as revision 4129 to svn://svn.ffmpeg.org/ffmpeg/trunk
99cd59e5 04/14/2005 08:30 PM Michael Niedermayer

minor optimization

Originally committed as revision 4128 to svn://svn.ffmpeg.org/ffmpeg/trunk
3c096ac7 04/14/2005 06:33 PM Michael Niedermayer

optimizing unpack_coeffs()

Originally committed as revision 4127 to svn://svn.ffmpeg.org/ffmpeg/trunk
86e59cc0 04/13/2005 01:57 AM Yartrebo

Snow segfault bug in revision 1.43 patch by (Yartrebo /yartrebo earthlink net/)

Originally committed as revision 4126 to svn://svn.ffmpeg.org/ffmpeg/trunk
f5a71928 04/10/2005 02:21 PM Michael Niedermayer

rescale coefficients during IDWT, that way the lifting steps are much simpler and faster

Originally committed as revision 4119 to svn://svn.ffmpeg.org/ffmpeg/trunk
a0a74ad9 04/09/2005 10:15 PM Michael Niedermayer

increasing precission of the quantization parameter
this is needed as the quantization stepsize for each subband is also in this precission and insignificant changes to the wavelet like scaling its coefficients slightly differently would lead to wildly variing PSNR and bitrate...
c97de57c 04/09/2005 07:48 PM Michael Niedermayer

fix QROOT != 8

Originally committed as revision 4114 to svn://svn.ffmpeg.org/ffmpeg/trunk
538a3841 04/05/2005 05:59 PM Michael Niedermayer

10% faster unpack_coeffs

Originally committed as revision 4108 to svn://svn.ffmpeg.org/ffmpeg/trunk
3cff4572 04/05/2005 09:37 AM Michael Niedermayer

fixing lossless snow

Originally committed as revision 4107 to svn://svn.ffmpeg.org/ffmpeg/trunk
565a45ac 04/04/2005 09:35 PM Michael Niedermayer

merge vertical lifting steps and a little cleanup

Originally committed as revision 4104 to svn://svn.ffmpeg.org/ffmpeg/trunk
a0d1931c 04/03/2005 03:43 PM Yartrebo

Snow Slicing patch by (Yartrebo) yartrebo earthlink net

Originally committed as revision 4101 to svn://svn.ffmpeg.org/ffmpeg/trunk
f9e6ebf7 03/15/2005 09:05 PM Loren Merritt

slice-based idwt (10% faster decoding)

Originally committed as revision 4040 to svn://svn.ffmpeg.org/ffmpeg/trunk
53513831 02/24/2005 04:39 PM Michael Niedermayer

-strict -1 comment fix

Originally committed as revision 3976 to svn://svn.ffmpeg.org/ffmpeg/trunk
934982c4 01/23/2005 06:09 PM Michael Niedermayer

avoid buf_size == 0 checks in every decoder

Originally committed as revision 3872 to svn://svn.ffmpeg.org/ffmpeg/trunk
d06c75a8 01/16/2005 10:11 PM Matthieu Castet

10l patch by (matthieu castet <castet.matthieu free fr>)

Originally committed as revision 3842 to svn://svn.ffmpeg.org/ffmpeg/trunk
0ecca7a4 01/12/2005 12:16 AM Michael Niedermayer

various security fixes and precautionary checks

Originally committed as revision 3822 to svn://svn.ffmpeg.org/ffmpeg/trunk
8ff53f5b 01/03/2005 04:13 PM Gianluigi Tiesi

Disable encoders patch by (Gianluigi Tiesi <mplayer netfarm it>)

Originally committed as revision 3797 to svn://svn.ffmpeg.org/ffmpeg/trunk
2554db9b 11/25/2004 07:26 PM Michael Niedermayer

fix for build on IRIX by (Michel Bardiaux {mbardiaux peaktime be})

Originally committed as revision 3713 to svn://svn.ffmpeg.org/ffmpeg/trunk
28869757 10/30/2004 02:16 AM Michael Niedermayer

CABAC -> range coder

Originally committed as revision 3655 to svn://svn.ffmpeg.org/ffmpeg/trunk
d7d51926 09/24/2004 06:12 PM Michael Niedermayer

unused

Originally committed as revision 3502 to svn://svn.ffmpeg.org/ffmpeg/trunk
715a97f0 09/23/2004 12:20 PM Michael Niedermayer

merge predict_plane() with DWTELEM->8bit conversation (21% faster)

Originally committed as revision 3499 to svn://svn.ffmpeg.org/ffmpeg/trunk
034aff03 09/21/2004 11:10 PM Michael Niedermayer

8 -> FRAC_BITS

Originally committed as revision 3489 to svn://svn.ffmpeg.org/ffmpeg/trunk
aa25a462 09/19/2004 02:43 PM D Richard Felker III

consistent use of types patch by (D Richard Felker III <dalias at aerifal dot cx>)

Originally committed as revision 3480 to svn://svn.ffmpeg.org/ffmpeg/trunk
7c2425d2 09/17/2004 11:51 PM Loren Merritt

simplify getsymbol patch by (Loren Merritt <lorenm at u dot washington dot edu>)

Originally committed as revision 3476 to svn://svn.ffmpeg.org/ffmpeg/trunk
bd368b56 09/15/2004 01:55 AM Michael Niedermayer

per picture psnr

Originally committed as revision 3465 to svn://svn.ffmpeg.org/ffmpeg/trunk
d92b5807 09/12/2004 11:09 PM Michael Niedermayer

100l (forgot to set the 8x8 mc functions, so ME did use the mpeg ones ...)

Originally committed as revision 3456 to svn://svn.ffmpeg.org/ffmpeg/trunk
ec697587 09/12/2004 09:32 PM Michael Niedermayer

use h264 MC code if possible
50% faster predict_plane() if mmx2/3dnow is available
0.1% bitrate increase

Originally committed as revision 3455 to svn://svn.ffmpeg.org/ffmpeg/trunk
3924dac4 09/12/2004 10:51 AM Michael Niedermayer

use pointer arithmetic in mc_block(), 25% faster

Originally committed as revision 3452 to svn://svn.ffmpeg.org/ffmpeg/trunk
ff158dc9 09/05/2004 09:46 PM Michael Niedermayer

20% faster predict_plane()
moion vector max/min fix

Originally committed as revision 3434 to svn://svn.ffmpeg.org/ffmpeg/trunk
19aa028d 08/31/2004 04:28 PM Michael Niedermayer

10l (keyframes and context resets)

Originally committed as revision 3426 to svn://svn.ffmpeg.org/ffmpeg/trunk
39c61bbb 08/28/2004 02:24 PM Michael Niedermayer

cleanup

Originally committed as revision 3425 to svn://svn.ffmpeg.org/ffmpeg/trunk
fff6d4ea 08/28/2004 02:08 PM Michael Niedermayer

10l
more benchmarking code
inline

Originally committed as revision 3424 to svn://svn.ffmpeg.org/ffmpeg/trunk
ea7d9cd4 08/27/2004 09:16 PM Michael Niedermayer

merge decode_subband() and dequantize()

Originally committed as revision 3422 to svn://svn.ffmpeg.org/ffmpeg/trunk
ff765159 08/27/2004 08:33 PM Michael Niedermayer

11% faster decode_subband()

Originally committed as revision 3421 to svn://svn.ffmpeg.org/ffmpeg/trunk
0cea8a03 08/27/2004 08:15 PM Michael Niedermayer

5% faster decode_subband()
a little cleanup

Originally committed as revision 3420 to svn://svn.ffmpeg.org/ffmpeg/trunk
7b49c309 08/27/2004 07:52 PM Michael Niedermayer

46% faster decode_subband()

Originally committed as revision 3419 to svn://svn.ffmpeg.org/ffmpeg/trunk
3c1adccd 08/27/2004 01:06 AM Michael Niedermayer

50% faster decode_subband()

Originally committed as revision 3418 to svn://svn.ffmpeg.org/ffmpeg/trunk
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)...
64886072 08/25/2004 12:26 AM Michael Niedermayer

edge bugfix
1-1.3% lower bitrate and +0.01 PSNR (foremen@352x288 qscale=1,8)

Originally committed as revision 3414 to svn://svn.ffmpeg.org/ffmpeg/trunk
46c281e8 08/03/2004 02:34 AM Michael Niedermayer

cleanup

Originally committed as revision 3377 to svn://svn.ffmpeg.org/ffmpeg/trunk
93fbdb5a 08/02/2004 07:09 PM Michael Niedermayer

lossless support

Originally committed as revision 3374 to svn://svn.ffmpeg.org/ffmpeg/trunk
3bb9f096 08/02/2004 06:01 PM Michael Niedermayer

cleanup

Originally committed as revision 3373 to svn://svn.ffmpeg.org/ffmpeg/trunk
0635cbfc 08/02/2004 05:53 PM Michael Niedermayer

improved magnitude coding, 0.2% lower bitrate (foreman@352x288 qscale 1 and 8)

Originally committed as revision 3372 to svn://svn.ffmpeg.org/ffmpeg/trunk
bc68bfdd 08/02/2004 01:06 AM Michael Niedermayer

cleanup

Originally committed as revision 3367 to svn://svn.ffmpeg.org/ffmpeg/trunk
4f4e9633 08/02/2004 01:03 AM Michael Niedermayer

various subband encoders (all either worse or complicated so they are commented out)
different 0-context encoding, 1.2% lower bitrate (foreman@352x288 qscale=8) no significant change at qscale=1

Originally committed as revision 3366 to svn://svn.ffmpeg.org/ffmpeg/trunk
620ab797 07/28/2004 01:35 AM Michael Niedermayer

1/0 fix

Originally committed as revision 3357 to svn://svn.ffmpeg.org/ffmpeg/trunk
2ff9ff5b 07/28/2004 12:09 AM Michael Niedermayer

dont segfault without -strict -1

Originally committed as revision 3356 to svn://svn.ffmpeg.org/ffmpeg/trunk
da66b631 07/27/2004 05:38 PM Michael Niedermayer

optimize quantizaton (about 3x faster)
further opt is easily possible but could lead to overflows depening upon coefficient range, so this wont be done yet as it would make the code somewhat less flexible

Originally committed as revision 3354 to svn://svn.ffmpeg.org/ffmpeg/trunk
a8d73e56 07/27/2004 05:02 PM Michael Niedermayer

cleanup
remove ugly and slow vertical scaning code
0.1% bitrate increase (foreman@352x288 qp=1)
0.3% bitrate increase (foreman@352x288 qp=8)

Originally committed as revision 3353 to svn://svn.ffmpeg.org/ffmpeg/trunk
78486403 07/27/2004 01:40 PM Michael Niedermayer

use parent sample to predict significance & magnitude
1% bitrate reduction (foreman@352x288 qscale 1 & 8)

Originally committed as revision 3352 to svn://svn.ffmpeg.org/ffmpeg/trunk