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14 Commits

Author SHA1 Message Date
Urvang Joshi
e40a3684f5 Fix a crash in lossless decoder. 
This was due to incorrect update of 'ok'.

Change-Id: I91edfb5682527e8bc7eaa10e635c0261edb016b6
 2012-05-09 14:35:11 +05:30
James Zern
126e160672 cosmetics 
vp8.[hc]:fix '*' placement in pointer types
vp8l.c: remove trailing ',' from enum
decode.h: fix stray WebPINew()

Change-Id: Id6749a14a12ed0a090649f28ef4267fda45a37a8
 2012-05-07 17:47:51 -07:00
Vikas Arora
781c01f421 Simple Huffman code changes. 
No empty trees are codified with the simple Huffman code. The simple Huffman
code is simplified to be either a 1-bit code or 8-bit code for symbols.

Change-Id: I3e2813027b5a643862729339303d80197c497aff
 2012-05-07 14:25:21 -07:00
Urvang Joshi
a2849bc502 Lossless decoder: remove an unneeded param in ReadHuffmanCodeLengths(). 
Change-Id: I279452fdf38b680737d5ba6e868a219281bc8962
 2012-05-07 14:25:20 -07:00
Pascal Massimino
8415ddf3be further simplification for the meta-Huffman coding 
* don't transmit the number of Huffman tree group explicitly
* move color-cache information before the meta-Huffman block

* also add a check that color_cache_bits is in [1..11] range, as per spec.

Change-Id: I81d7711068653b509cdbc1151d93e229c4254580
 2012-05-07 14:25:07 -07:00
Vikas Arora
e38b40a996 Factorize code for clearing HtreeGroup. 
Change-Id: I29de6dab7383b8cf071eec155e01340d5fdadee5
 2012-05-07 14:24:53 -07:00
James Zern
5c5be8ba69 VP8[L]GetInfo: check input pointers 
validate data before using & width/height before assigning.

Change-Id: I0872e80fcbfea295d7c633b0d4cb7809e1d1883b
 2012-05-02 16:05:02 -07:00
Pascal Massimino
23be6edfd4 few cosmetics 
Change-Id: I85b44d811ecc7c551b75e74e64115e74645836b6
 2012-04-24 11:53:10 -07:00
Vikas Arora
231ec1fb6d Removing the indirection of meta-huffman tables. 
Now, the indexing refers directly to 5 huffman codes  that must be encoded separately.

Change-Id: I4deeb04de1997e6d20c376046d2053ec7ee918de
 2012-04-23 08:36:14 -07:00
James Zern
9b3d1f3a1b decode.h: use size_t consistently 
replaces mixed use of int/uint32_t for buffer sizes
further changes the API/ABI.

Change-Id: I91d70fd82ee3e1ac34b884b8ead9a114a9b1015a
 2012-04-19 14:31:31 -07:00
Pascal Massimino
fac0f12e1b rename BitReader to VP8LBitReader 
Change-Id: I192b76422e131a94fb58c2c4a5520a5dba807126
 2012-04-13 01:56:31 -07:00
Urvang Joshi
4af1858a10 Fix a crash due to max symbol in a tree >= alphabet size 
(cherry picked from commit 15253f91567ce7a2a4a3de8d70e54ba4b0641af3)

Change-Id: I4fbeaea4c712dae3bef078aef9d302b44bc39ffb
 2012-04-10 23:07:13 -07:00
Pascal Massimino
6f01b830e2 split the VP8 and VP8L decoding properly 
* each with their own decoder instances.
* Refactor the incremental buffer-update code a lot.
* remove br_offset_ for VP8LDecoder along the way
* make VP8GetHeaders() be used only for VP8, not VP8L bitstream
* remove VP8LInitDecoder()
* rename VP8LBitReaderResize() to VP8LBitReaderSetBuffer()
(cherry picked from commit 5529a2e6d47212a721ca4ab003215f97bd88ebb4)

Change-Id: I58f0b8abe1ef31c8b0e1a6175d2d86b863793ead
 2012-04-10 23:06:58 -07:00
James Zern
19f6398ed7 add dec/vp8l{i.h,.c} from experimental 
Pulled from 5529a2e^.
The history of this and related files is a bit entangled so rather
trying to split the changes and introduce some noise in master's history
we'll start with a fresh snapshot.
The file progression is still available in the experimental branch.

Change-Id: I490a49cb0084d556a29d7c5257c986ea695ce60c
 2012-04-10 23:05:14 -07:00