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Author SHA1 Message Date
Urvang Joshi
4d02d5863f Lossless encoder: correction in Palette storage 
(Essentially, there was no need of a separate 'argb_palette' array. And
argb_palette[0] was never being set).

Change-Id: Id0a8c7e063d3af41e39fc9b8661611b51ccc55cd
 2012-05-07 14:24:47 -07:00
Urvang Joshi
4a6362357a fix a memleak in EncodeImageInternal() 
Change-Id: I55cd013211f192188b54c694ef0837af0c01b53c
 2012-05-07 14:24:45 -07:00
Urvang Joshi
0993a611cd Full and final fix for prediction transform 
use (tile_size + 1) rows of scratch area.

Change-Id: I06d612fff1794fc045ba76275e94e7210802c332
 2012-05-07 14:24:43 -07:00
Urvang Joshi
afd2102f43 Fix cross-color transform in lossless encoder 
make elements of "Multiplier" struct unsigned, so that any negative values are
automatically converted to "mod 256" values.

Change-Id: Iab4f9bacc50dcd94a557944727d9338dbb0982f7
 2012-05-07 14:24:41 -07:00
Urvang Joshi
b96d8740c9 Need to write a '0' bit at the end of transforms. 
Also convert an 'if' to 'assert'.

Change-Id: Ia1129ad9ddb027c27b4f4fc1da4bbaf53a0a8f76
 2012-05-07 14:24:39 -07:00
Urvang Joshi
54dad7e553 Color cache size should be counted as 0 when cache bits = 0 
Change-Id: I1d05e0561a92aebaf62162fe11ffc4b12496d698
 2012-05-07 14:24:37 -07:00
Urvang Joshi
4f0c5caf67 Fix prediction transform in lossless encoder. 
(Keep one tile as a scratch buffer).

Change-Id: If112ada29bfd0bdc81b82e849a566b30dd331d2f
 2012-05-07 14:24:35 -07:00
Vikas Arora
36dabdadf8 Fix memory leak in method EncodeImageInternal for histogram_image. 
Change-Id: Ia1cfb96d9e6c120630732e2b5f39688376d1d208
 2012-05-07 14:24:33 -07:00
Urvang Joshi
352a4f49ab Get rid of PackLiteralBitLengths() 
[and in turn a malloc]. Also, a few related const fixes.

Change-Id: I229519b1c34d41c78d9ad2403f1e25feab3c9d93
 2012-05-07 14:24:31 -07:00
Vikas Arora
d673b6b9a0 Change the predictor function to pass left pixel 
instead of pointer to the source.

Change-Id: Ia2c8e17c3140709a825c2f85a88c5e31bd6e462f
 2012-05-07 14:24:29 -07:00
Urvang Joshi
b2f99465a7 Fix CopyTileWithPrediction() 
so that it uses original values of left, top etc for prediction rather than the
predicted values of the same. Also, do some renaming in the same to make it
more readable.

Change-Id: I2fe94e35a6700bd437f5c601e2af12323bf32445
 2012-05-07 14:24:27 -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
09f7532cce Fix few nits (const qualifiers) 
Change-Id: I527e82af49956b695ab18625d34e143854067421
 2012-05-07 14:24:21 -07:00
Vikas Arora
648be3939f Added implementation for various lossless functions 
- VP8LEncAnalyze, EvalAndApplySubtractGreen, ApplyPredictFilter,
  ApplyCrossColorFilter
- Added palette handling and transform buffer management in VP8LEncodeImage()
- Add Transforms (subtract Green, Predict, cross_color) to dsp/lossless.c.

These are more-or-less copied from src/lossless code.

After this Change, will implement the EncodeImageInternal() method.

Change-Id: Idf71f803c24b3b5ae3b5079b15e019721784611d
 2012-05-07 14:24:19 -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
fcba7be2d3 Fixed header file tag (WEBP_UTILS_HUFFMAN_ENCODE_H_) 
Change-Id: I7ccd00361b1b0347639b05ee494e8e701c95cfe3
 2012-05-07 14:24:16 -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
Vikas Arora
fdccaaddcf Fixing nits 
- Const Handling of picture object, removed bitwriter from encoder.

Change-Id: Id943854de09324de81cca615ada960390c4b8152
 2012-05-07 14:24:12 -07:00
Vikas Arora
227110c4c3 libwebp interface changes for lossless encoding. 
Change-Id: I703a1a18347acf78378cb23fddc6e5ca6dc6a0bb
 2012-05-07 14:24:09 -07:00
Pascal Massimino
50679acf25 minor style fixes 
Change-Id: I78a6fa19a799c41d6536631f547279692b658c4d
 2012-05-04 19:01:11 -07:00
Pascal Massimino
b38dfccf8d remove unneeded reference to NUM_LITERAL_CODES 
Change-Id: I3e98acce3a69fa45054ffcf77644fcbbc04bd366
 2012-05-04 19:01:09 -07:00
Pascal Massimino
8979675bdf harmonize header description 
Change-Id: Ie0256794e663b58557e7234f08af3d516071001e
 2012-05-04 19:01:06 -07:00
James Zern
c04eb7be9d tcoder.c: define NOT_HAVE_LOG2 for MSVC builds 
no version of msvc currently implements log2(). unconditionally define
NOT_HAVE_LOG2 in this case to simplify building libwebp sources in other
projects.

Change-Id: Ia9d985b1125553c5a8271d7e539bc1b4f898d749
 2012-05-03 16:59:13 -07:00
pascal massimino
9a214fa112 Merge "VP8[L]GetInfo: check input pointers" 2012-05-02 16:07:47 -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
0c188feca1 Merge changes I431acdfe,I713659b7 
* changes:
  mux: drop 'chunk' from ChunkInfo member names
  muxi.h: remove some unused defines
 2012-05-02 16:03:06 -07:00
James Zern
b3515c6215 mux: drop 'chunk' from ChunkInfo member names 
fixes naming style (members should be lowercase, not camelcase).

Change-Id: I431acdfe3cc3740d9effe9df80a94ca284a072b6
 2012-05-01 17:47:18 -07:00
James Zern
aea7923ca2 muxi.h: remove some unused defines 
Change-Id: I713659b7ed83bafedd94a0b16379decea293a2f0
 2012-05-01 17:47:11 -07:00
James Zern
0142249285 update NEWS file for next release 
Change-Id: I93ba2432fb99334dd17bd1a9da3a39c19e495484
 2012-05-01 17:34:14 -07:00
James Zern
29e3f7ec75 Merge "dec: remove deprecated WebPINew()" 2012-05-01 11:26:31 -07:00
pascal massimino
4718e44988 Merge "muxedit: a few more size_t changes" 2012-04-28 03:04:08 -07:00
pascal massimino
82654f961d Merge "muxedit: remove a few redundant NULL checks" 2012-04-28 02:50:27 -07:00
James Zern
02f27fbd3b dec: remove deprecated WebPINew() 
Change-Id: I22ad1d297333f5ebc84456d142426a4e0e9a044b
 2012-04-27 19:47:35 -07:00
James Zern
ccddb3fc6f muxedit: remove a few redundant NULL checks 
Change-Id: I8285a7694d40b0f5c986dbfe40703251682eaafc
 2012-04-27 19:06:03 -07:00
James Zern
a6cdf7107a muxedit: a few more size_t changes 
Change-Id: I18266dc572426cb3daace6e0ad8f2ae21687a151
 2012-04-27 18:53:08 -07:00
pascal massimino
a384689292 Merge "mux: remove unused LIST_ID" 2012-04-27 03:03:34 -07:00
James Zern
11ae46ae91 alpha.c: quiet some size_t -> int conversion warnings 
Change-Id: I52026a9271bde4028f00df2d752e100c61fd3fe3
 2012-04-26 18:47:08 -07:00
James Zern
dee466926b mux: remove unused LIST_ID 
The 'LIST' fourcc is not a well known value in the context of webp.

Change-Id: I6a571f5f3acd6463cf3cad7c5d5ffa89d0597fb6
 2012-04-25 18:18:25 -07:00
James Zern
03f1f49321 mux: add version checked entry points 
Change-Id: I3bf5b25b17c06ec092f8ad1c14eea411aa9471c1
 2012-04-25 17:27:16 -07:00
pascal massimino
6a0abdaa3a Merge "doc: tile/alpha corrections" 2012-04-24 23:57:05 -07:00
Pascal Massimino
c8139fbe5d Merge "few cosmetics" 2012-04-24 23:47:06 -07:00
pascal massimino
683387374b Merge "lossless: remove some size_t -> int conversions" 2012-04-24 23:41:26 -07:00
James Zern
5249e94a22 doc: tile/alpha corrections 
- the tile chunk size does not include the alpha or vp8 chunks that
  follow
- remove 'experimental' note from alpha section
- drop an unused term from the terminology section

Change-Id: I46f0fd610bbce579446e19339c3458dddfb595f7
 2012-04-24 17:43:06 -07:00
James Zern
d96e722b0c huffman: quiet int64 -> int conversion warning 
children_ is bounded by max_nodes_ and protected with IsFull checks

Change-Id: Iac1eb03c5030568140352174c1265a938fc28d97
 2012-04-24 16:17:36 -07:00
James Zern
532020f24a lossless: remove some size_t -> int conversions 
Sizes are given as ints in the documentation and used as such elsewhere.

Change-Id: I51ecd9e501cf9b4e3948aa0e947d2c9b5c85a30f
 2012-04-24 16:00:00 -07:00
Pascal Massimino
23be6edfd4 few cosmetics 
Change-Id: I85b44d811ecc7c551b75e74e64115e74645836b6
 2012-04-24 11:53:10 -07:00
James Zern
1349edade1 Merge "configure: AC_ARG_* use AS_HELP_STRING" 2012-04-24 10:54:39 -07:00
James Zern
bfbcc60a18 configure: AC_ARG_* use AS_HELP_STRING 
properly formats --help output

Change-Id: I18fad9039400df8415ef192a41c0295019c52775
 2012-04-24 10:48:17 -07:00
James Zern
1427ca8eae Merge "Makefile.am: header file maintenance" 2012-04-24 10:41:59 -07:00