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44 commits

Author SHA1 Message Date
Ari Koivula 9229e5d11b Fix undefined behavior of EO_IDX. 
- Move the whole eo_cat thing to it's own function.

- Casting pixel values to int should solve issues with SIGN3. Not casting them
  was detected as undefined behavior by CLANG. Probably because the result of
  two unsigned might be treated as unsigned (but isn't on VS2010).
 2014-04-16 14:50:19 +03:00
Ari Koivula 051484f8d8 Remove unused old mode cost estimation from SAO. 2014-04-16 11:19:23 +03:00
Ari Koivula 33b9594fec Take into account the coding cost of not using SAO. 2014-04-15 21:32:24 +03:00
Ari Koivula 880d09b27a Add sao_type_idx to SAO mode cost estimation. 2014-04-15 21:29:09 +03:00
Ari Koivula 280a946269 Apply bit cost fixes to edge band band sao search. 
- Increases bdrate slightly. It's still a cleaner solution though and further
  improvements to bit cost estimation might improve things.
 2014-04-15 21:28:16 +03:00
Ari Koivula c968253eb3 Estimate SAO merge coding costs better. 
- This doesn't seem to have very much of an effect. I guess the difference
  between 1 and 2 bits isn't that important.
 2014-04-15 21:27:16 +03:00
Ari Koivula ef7840c623 Add SAO coding costs for sao_eo_class, band position and offset sign. 
- This reduces bdrate a little bit.

- It seems like increasing the bit cost of using SAO in general
  increases bdrate.
 2014-04-15 21:24:44 +03:00
Ari Koivula 9ff32c566c Adjust SAO mode coding cost for zero offsets. 
- Coding zero with TR only takes one bit.

- Even though offset 0 should be fairly common, this doesn't seem to help very
  much and actually increases bdrate on some sequences.
 2014-04-15 21:21:31 +03:00
Ari Koivula 67a3d5542c Add better delta distortion calculation to sao. 2014-04-15 21:17:29 +03:00
Ari Koivula 8c4796e56e Calculate edge and band sao separately. 2014-04-15 21:16:55 +03:00
Ari Koivula 1017c6639c Move band and edge sao to their own functions. 2014-04-15 21:14:59 +03:00
Laurent Fasnacht 9f3aeed6be Fix pixel access in sao 2014-04-14 15:40:06 +02:00
Laurent Fasnacht 78c579053a encoder_control should be const in nearly all the code 2014-04-14 10:56:06 +02:00
Ari Koivula d44d1837bb Remove unreferenced parameters. 
- Working towards issue #11.
 2014-04-04 12:56:24 +03:00
Ari Koivula 953aef0379 Move rest of LCU encoding inside the LCU loop. 
- Move SAO search inside the LCU loop.

- Move CU coding inside the LCU loop.

- Move SAO frame reconstruction loop to sao module.
 2014-03-21 12:41:44 +02:00
Ari Koivula db4402e8d6 Fix for SAO band offset merge cost calculation. 
Gives a tiny improvement to both bit rate and psnr.
 2014-02-22 16:08:39 +02:00
Marko Viitanen 34f558ddd7 Fixed SAO cost checking, disabling SAO when RD-cost is 0 
Decreases overall BD-rate a bit more, this fix prevents coding zero offsets to the bitstream
 2014-02-21 17:43:15 +02:00
Luca Barbato d07e12dbf0 sao: Add correct header 
abs is part of stdlib.h
 2014-02-21 15:07:56 +01:00
Luca Barbato ba494e19c5 sao: Constantize *_list 2014-02-21 15:07:15 +01:00
Luca Barbato 8fbb26975e sao: Drop unused variable 2014-02-21 15:07:15 +01:00
Luca Barbato f314c9b8c0 sao: Staticize 2014-02-21 15:07:11 +01:00
Luca Barbato 934a4e3b88 whitespace: Drop trailing spaces 2014-02-21 15:03:35 +01:00
Marko Viitanen e3a528df2e Added rate cost to SAO mode selection calculations 
Decreased BD-rate 1% on LP configuration with 600 frames of BQMall, QP 22,27,32,37
Merge check is now performed in a function to ease the checking
 2014-02-21 15:54:56 +02:00
Marko Viitanen f1f293ae0c Implemented SAO merging 2014-02-21 13:20:54 +02:00
Marko Viitanen 13dc95a164 Implemented band SAO reconstruction 2014-02-21 11:52:41 +02:00
Marko Viitanen e4880aa4b7 Fixed SAO bitstream generation and band offset a bit 2014-02-20 17:22:33 +02:00
Marko Viitanen 5d946c774a Implemented draft SAO band offset functions 2014-02-20 16:08:09 +02:00
Ari Koivula 40ed25de7e Fix compiler warnings for VS2010 /W4 in sao.c. 
- Working towards issue #11.
 2014-02-06 16:06:24 +02:00
Ari Koivula 77339efa57 Add COPYING file and add boilerplate for copyright and GPLv2 to every file. 2014-01-24 12:48:48 +02:00
Ari Koivula 80064d3834 Streamline SAO to have less duplicated code. 2013-11-14 15:38:19 +02:00
Ari Koivula 61232b466c Move types to more appropriate places. 2013-11-12 12:44:58 +02:00
Ari Koivula 3af65b8477 Add SAO searching and reconstruction for chroma. 
One I frame and 99 P frames encoded with SAO off and on.
Processed 100 frames,    6693224 bits AVG PSNR: 30.7248 37.8978 37.8287
Processed 100 frames,    6295072 bits AVG PSNR: 32.2511 38.9373 38.9818
 2013-11-12 11:55:39 +02:00
Ari Koivula 84cd618daf Add calculation of SAO-offsets for non-LCU sized CUs. Luma SAO works now. 2013-11-11 09:49:49 +02:00
Ari Koivula 692ef3e9d9 Add guard against illegal SAO edge offsets. 2013-11-08 16:13:48 +02:00
Ari Koivula 22d21ffac2 Enable SAO search. 
-Add guard to reconstruction to avoid reconstructing LCUs with no sao type.
-Add temporary guard to SAO search to skip LCUs can't be handled yet.
 2013-11-08 15:39:01 +02:00
Ari Koivula 8b0eb66555 Fix bug in SAO reconstruction. 2013-11-08 15:04:53 +02:00
Ari Koivula 43ae719ddb Tweak implementation of SAO reconstruction to be a bit more clear. 2013-11-08 15:04:06 +02:00
Ari Koivula ef8a984d4f Fix incorrect blitting of top row during SAO reconstruction. 2013-11-08 11:02:18 +02:00
Ari Koivula f9061d322a Fix handling of incomplete LCU's in SAO reconstruction. 2013-11-06 23:09:56 +02:00
Ari Koivula 1c03471d57 Fix for leftmost LCUs being offset by one pixel during SAO reconstruction. 2013-11-06 22:26:00 +02:00
Ari Koivula 98f2a1aedc Fix LCU borders in sao reconstruction. 2013-11-06 11:23:01 +02:00
Ari Koivula 5791301c2b Fix moving of rightmost LCUs during sao reconstruction. 
Now the leftmost LCUs move though.
 2013-11-04 21:37:04 +02:00
Ari Koivula f21df00386 Save a copy of luma for sao. 2013-11-04 20:33:29 +02:00
Ari Koivula a57b938270 Add new module sao. 
- Move sao-stuff not directly related to encoding to sao-module.
- Calculate sao for all LCUs before encoding any of them. This is in
  preparation to doing the reconstruction line at a time instead of
  LCU at a time.
 2013-11-04 19:41:01 +02:00