generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
4,917 Commits 24 Branches 241 Tags 173 MiB
7dd611c900
Commit Graph

63 Commits

Author SHA1 Message Date
Aurelien Jacobs
62ab0b7822 fix unused variable warnings 
Originally committed as revision 4609 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-09-21 23:09:16 +00:00
Michael Niedermayer
cc884a3506 reducing minimum supported picture size 
Originally committed as revision 4535 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-08-21 22:17:41 +00:00
Michael Niedermayer
9cd8179818 #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
 2005-05-08 20:15:42 +00:00
Michael Niedermayer
644a92626a PIX_FMT_NONE and related fixes 
Originally committed as revision 4161 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-04-25 18:29:06 +00:00
Yartrebo
66b32bf272 tighter snow slicing patch by (Yartrebo || yartrebo earthlink net) 
Originally committed as revision 4159 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-04-25 10:03:01 +00:00
Mike Melanson
160d679c07 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
 2005-04-24 17:21:11 +00:00
Yartrebo
8c2515bbb9 fix overflow in mc_block() patch by (Yartrebo )yartrebo earthlink net 
Originally committed as revision 4132 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-04-17 09:27:53 +00:00
Michael Niedermayer
b44985ba12 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 ...

Originally committed as revision 4131 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-04-15 13:24:30 +00:00
Loren Merritt
2cd340438a allow 2pass ratecontrol. also fixes psnr displayed by mencoder. 
Originally committed as revision 4130 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-04-15 05:54:47 +00:00
Michael Niedermayer
cbb1d2b161 replace complicated pointer dereference + index stuff by pointers in unpack_coeffs() 
Originally committed as revision 4129 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-04-14 20:54:03 +00:00
Michael Niedermayer
99cd59e58f minor optimization 
Originally committed as revision 4128 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-04-14 20:30:08 +00:00
Michael Niedermayer
3c096ac791 optimizing unpack_coeffs() 
Originally committed as revision 4127 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-04-14 18:33:26 +00:00
Yartrebo
86e59cc01d 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
 2005-04-13 01:57:19 +00:00
Michael Niedermayer
f5a719287d 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
 2005-04-10 14:21:53 +00:00
Michael Niedermayer
a0a74ad9f0 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
note, a encoder could also simply choose to leave the least significant bits of the quantization parameters zero which would give the exact previous behaviour except a y very tiny number of bits in  the header

Originally committed as revision 4115 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-04-09 22:15:48 +00:00
Michael Niedermayer
c97de57c39 fix QROOT != 8 
Originally committed as revision 4114 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-04-09 19:48:59 +00:00
Michael Niedermayer
538a38418c 10% faster unpack_coeffs 
Originally committed as revision 4108 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-04-05 17:59:05 +00:00
Michael Niedermayer
3cff4572ce fixing lossless snow 
Originally committed as revision 4107 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-04-05 09:37:43 +00:00
Michael Niedermayer
565a45ace3 merge vertical lifting steps and a little cleanup 
Originally committed as revision 4104 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-04-04 21:35:18 +00:00
Yartrebo
a0d1931c0e Snow Slicing patch by (Yartrebo) yartrebo earthlink net 
Originally committed as revision 4101 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-04-03 15:43:57 +00:00
Loren Merritt
f9e6ebf7f9 slice-based idwt (10% faster decoding) 
Originally committed as revision 4040 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-03-15 21:05:34 +00:00
Michael Niedermayer
53513831da -strict -1 comment fix 
Originally committed as revision 3976 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-02-24 16:39:03 +00:00
Michael Niedermayer
934982c4ac avoid buf_size == 0 checks in every decoder 
Originally committed as revision 3872 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-01-23 18:09:06 +00:00
Matthieu Castet
d06c75a830 10l patch by (matthieu castet <castet.matthieu free fr>) 
Originally committed as revision 3842 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-01-16 22:11:47 +00:00
Michael Niedermayer
0ecca7a49f various security fixes and precautionary checks 
Originally committed as revision 3822 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-01-12 00:16:25 +00:00
Gianluigi Tiesi
8ff53f5b07 Disable encoders patch by (Gianluigi Tiesi <mplayer netfarm it>) 
Originally committed as revision 3797 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-01-03 16:13:52 +00:00
Michael Niedermayer
2554db9b5f fix for build on IRIX by (Michel Bardiaux {mbardiaux peaktime be}) 
Originally committed as revision 3713 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-11-25 19:26:46 +00:00
Michael Niedermayer
2886975773 CABAC -> range coder 
Originally committed as revision 3655 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-10-30 02:16:27 +00:00
Michael Niedermayer
d7d51926dd unused 
Originally committed as revision 3502 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-09-24 18:12:43 +00:00
Michael Niedermayer
715a97f0c0 merge predict_plane() with DWTELEM->8bit conversation (21% faster) 
Originally committed as revision 3499 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-09-23 12:20:41 +00:00
Michael Niedermayer
034aff036f 8 -> FRAC_BITS 
Originally committed as revision 3489 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-09-21 23:10:10 +00:00
D Richard Felker III
aa25a462b6 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
 2004-09-19 14:43:09 +00:00
Loren Merritt
7c2425d239 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
 2004-09-17 23:51:36 +00:00
Michael Niedermayer
bd368b565b per picture psnr 
Originally committed as revision 3465 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-09-15 01:55:04 +00:00
Michael Niedermayer
d92b58073e 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
 2004-09-12 23:09:54 +00:00
Michael Niedermayer
ec69758781 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
 2004-09-12 21:32:36 +00:00
Michael Niedermayer
3924dac4c8 use pointer arithmetic in mc_block(), 25% faster 
Originally committed as revision 3452 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-09-12 10:51:02 +00:00
Michael Niedermayer
ff158dc95d 20% faster predict_plane() 
moion vector max/min fix

Originally committed as revision 3434 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-09-05 21:46:16 +00:00
Michael Niedermayer
19aa028dc5 10l (keyframes and context resets) 
Originally committed as revision 3426 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-08-31 16:28:49 +00:00
Michael Niedermayer
39c61bbbd3 cleanup 
Originally committed as revision 3425 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-08-28 14:24:48 +00:00
Michael Niedermayer
fff6d4ea4e 10l 
more benchmarking code
inline

Originally committed as revision 3424 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-08-28 14:08:50 +00:00
Michael Niedermayer
ea7d9cd4bc merge decode_subband() and dequantize() 
Originally committed as revision 3422 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-08-27 21:16:51 +00:00
Michael Niedermayer
ff76515933 11% faster decode_subband() 
Originally committed as revision 3421 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-08-27 20:33:16 +00:00
Michael Niedermayer
0cea8a037c 5% faster decode_subband() 
a little cleanup

Originally committed as revision 3420 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-08-27 20:15:32 +00:00
Michael Niedermayer
7b49c30974 46% faster decode_subband() 
Originally committed as revision 3419 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-08-27 19:52:32 +00:00
Michael Niedermayer
3c1adccd1c 50% faster decode_subband() 
Originally committed as revision 3418 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-08-27 01:06:58 +00:00
Michael Niedermayer
155ec6edf8 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)

Originally committed as revision 3416 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-08-26 20:04:54 +00:00
Michael Niedermayer
64886072f5 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
 2004-08-25 00:26:01 +00:00
Michael Niedermayer
46c281e8c1 cleanup 
Originally committed as revision 3377 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-08-03 02:34:50 +00:00
Michael Niedermayer
93fbdb5ac5 lossless support 
Originally committed as revision 3374 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-08-02 19:09:28 +00:00