109 Commits

Author SHA1 Message Date
Vikas Arora
e7167a2b95 Provide one entry point for backward references.
The new method VP8LGetBackwardReferences hides internal
heuristics used for choosing RLE or LZ77 based refs.
- Tuned VP8LHashChainFindCopy for better compression at higher Q.
- Refactored code.
- Removed the unused method VP8LVerifyBackwardReferences.

Change-Id: Ibb7bb072bab5a49a001577a20d88226f52e6c663
2012-05-09 12:13:06 +05:30
Pascal Massimino
1a210ef1a9 big code clean-up and refactoring and optimization
* de-inline some function
* make VP8LBackwardRefs be more like a vectorwith max capacity
* add bit_cost_ field to VP8LHistogram
* general code simplifications
* remove some memmov() from HistogramRefine
* simplify HistogramDistance()
...

Change-Id: I16904d9fa2380e1cf4a3fdddf56ed1fcadfa25dc
2012-05-07 14:25:29 -07:00
Vikas Arora
b39e7487a7 Reducing emerging palette size from 11 to 9 bits.
This is required to reduce memory used to construct histo_image.

Change-Id: I491a06e10a3e3f3d8a00ecec286394378283ffea
2012-05-07 14:25:19 -07:00
Urvang Joshi
e491729905 A quick pass of cleanup in backward reference code
const correctness, renaming, cosmetics etc.

Change-Id: I432befbb22f0eafd9a613f5f632398b6ef03c0f6
2012-05-07 14:25:05 -07:00
Vikas Arora
c6ac4dfbb4 Run TraceBackwards for higher qualities.
Also reduce the iteration count in function VP8LHashChain_FindCopy.

Change-Id: I73e3811e142e81314515587fd655ab3bfa74d099
2012-05-07 14:25:00 -07:00
Vikas Arora
84547f540c Add EncodeImageInternal() method.
Most of changes in enc/vp8l.c is cherry-picked from src/lossless/encode.c

Change-Id: I27938cb2590eccbfe1db0a454343e856bd483e75
2012-05-07 14:24:25 -07:00
Urvang Joshi
6b38378acb Guard the lossless encoder (in flux) under a flag
Change-Id: I6dd8fd17089c199001c06b1afde14233dc3e3234
2012-05-07 14:24:23 -07:00
Vikas Arora
32714ce3be Add VP8L prefix to backward ref & histogram methods.
Change-Id: I8c14fb219a1d7830d3244aa780c91c9964867330
2012-05-07 14:24:17 -07:00
Vikas Arora
bc7037465d Add backward_ref, histogram & huffman encode modules from lossless.
Change-Id: Iac056d27972956782defa182caa3ea400cdb77f8
2012-05-07 14:24:14 -07:00