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a452a5554a
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Author SHA1 Message Date
James Zern
a452a5554a cwebp: extract WIC decoding to its own module 
Change-Id: I8e3e20787f6c3cc0616bd33beb2a6ccdda1e04f7
 2013-01-22 18:31:28 -08:00
James Zern
2b252a53a8 Merge "Provide option to swap bytes for 16 bit colormodes" 2013-01-22 15:00:39 -08:00
Vikas Arora
94a48b4bc3 Provide option to swap bytes for 16 bit colormodes 
Color modes: RGB_565 & RGBA_4444
Change-Id: I571b6832b9848e5c4109272978f68623ca373383
 2013-01-22 14:51:20 -08:00
skal
8b2152c579 Merge "add an extra assert to check memory bounds" 2013-01-22 14:10:02 -08:00
skal
0d19fbff51 remove some -Wshadow warnings 
these are quite noisy, but it's not a big deal to remove
them.

Change-Id: I5deb08f10263feb77e2cc8a70be44ad4f725febd
 2013-01-22 23:06:28 +01:00
skal
cd22f655e8 add an extra assert to check memory bounds 
-> will remove a static-analysis warning about unused value.
addresses issue #138

Change-Id: I8ba4bf71a41e32759da41907aab73108dd230bc4
 2013-01-22 13:38:58 +01:00
skal
8189feda50 Merge "Add details and reference about the YUV->RGB conversion" 2013-01-21 07:10:42 -08:00
pascal massimino
1d2702b1da Merge "Formatting fixes in lossless bitstream spec" 2013-01-18 14:41:56 -08:00
Urvang Joshi
8425aaee8f Formatting fixes in lossless bitstream spec 
- Escape brackets for which kramdown was generating a warning.
Note: This only changes this source file; output HTML would look exactly
the same.
- Also write '5' in words ('five').

Change-Id: I472a03c090a12eb7520719ea463469b36a2736b9
 2013-01-18 14:35:47 -08:00
skal
a556cb1ab4 Add details and reference about the YUV->RGB conversion 
Originated from the discussion at
   http://code.google.com/p/webp/issues/detail?id=134

Change-Id: I24384e2d2f5cf262d8632fc98303cba5e2d27224
 2013-01-18 23:26:55 +01:00
skal
d8f21e0bab add link to SSIM description on Wikipedia 
+ a brief description of LSIM

Change-Id: I4344f3e3b28d8bc4109b729dec9000e9c8fcbdbb
 2013-01-18 13:13:56 +01:00
pascal massimino
18e9167ea6 Merge "WebP-lossless spec clarifications:" 2013-01-18 00:15:01 -08:00
pascal massimino
98e25b9b81 Merge "cwebp: add -metadata option" 2013-01-18 00:13:40 -08:00
Urvang Joshi
f01c2a538c WebP-lossless spec clarifications: 
- Clarify the BNF using 'Huffman code groups' and 'Huffman code group'.
- Introduce same terminology in 'Interpretation of meta Huffman codes'.
- Make explicit mention of what is the number of Huffman code groups,
  number of Huffman codes and the relation between the two.

Change-Id: I07aa9b62c1d464cd25dc02ac1a68d338b575bdc2
 2013-01-17 15:19:09 -08:00
pascal massimino
f4a97970de Merge "Disto4x4 and Disto16x16 in NEON" 2013-01-17 11:07:20 -08:00
Johann
47b7b0ba47 Disto4x4 and Disto16x16 in NEON 
Change-Id: Ic6d9dbbc97b5025ce359332c33ae306d5d8925a5
 2013-01-16 16:57:33 -08:00
James Zern
7eaee9f1ac cwebp: add -metadata option 
currently has no effect except to disable metadata extraction from the
input when the value is 'none'.

Change-Id: Ic50d4c9d634cc1f6b72ae4e130e99736c85a6477
 2013-01-14 17:44:54 -08:00
James Zern
36c52c2cf1 tiffdec: use toff_t for exif ifd offset 
versions < 4.0.0 used uint32 interchangeably, but with 4.0.0 toff_t
became 64-bit and TIFFTAG_EXIFIFD began returning it rather than
TIFF_LONG/uint32.

Change-Id: I42492bd24613a884c7496e7bfc0c5d892758bce9
 2013-01-10 21:33:24 -08:00
James Zern
7c8111e4a8 Merge "cwebp/tiffdec: add TIFF metadata extraction" 2013-01-10 15:52:05 -08:00
vikas arora
e6409adc2e Remove redundant include from dsp/lossless code. 
Change-Id: Ie8a497a486653f907c2a27f4027640a3308c6cc8
 2013-01-10 15:09:19 -08:00
pascal massimino
1ab5b3a7bd Merge "configure: fix --with-gifincludedir" 2013-01-08 13:54:23 -08:00
James Zern
03c749ebb8 configure: fix --with-gifincludedir 
GIF_INCLUDES were not being used by examples/Makefile.am

Change-Id: I981ad473f6efe24f095e2b9cc8b133d6ae3658b6
 2013-01-08 12:39:43 -08:00
Urvang Joshi
8b650635df multiple libgif versions support for gif2webp 
Make it work for libgif v5.0+, for which a couple of APIs have changed.

Change-Id: I6dd49bb5bf1b60f96f3a164d58ef2ef19281c96b
 2013-01-08 11:52:24 -08:00
Urvang Joshi
476e293fe8 gif2webp: Use DGifOpenFileName() 
This removes some unnecessary code.

Change-Id: Ic87baa402362f43b30d7c4a75be2f58e8f13f4a1
 2013-01-08 11:07:13 -08:00
James Zern
b50f277bc7 tiffdec: correct format string 
the expression using dircount will be promoted to int when tdir_t is an
unsigned short.
quiets:
warning: format specifies type 'unsigned short' but the argument has
      type 'int' [-Wformat]

Change-Id: If2e8c27454826556178b0a972aaed272d5fbfa07
 2013-01-07 19:06:20 -08:00
pascal massimino
2b9048e324 Merge "tiffdec: check error returns for width/height" 2012-12-22 06:29:23 -08:00
James Zern
a1b5a9a3e0 Merge "cwebp/tiff: use the first image directory" 2012-12-21 08:37:11 -08:00
James Zern
079423f5c5 tiffdec: check error returns for width/height 
Change-Id: I1399a7b75aea54044f30c6a53ac11843c1e75877
 2012-12-20 22:33:52 -08:00
pascal massimino
d62824af42 Merge "cwebp/jpegdec: add JPEG metadata extraction" 2012-12-20 22:25:46 -08:00
pascal massimino
03afaca4a2 Merge "cwebp: add PNG metadata extraction" 2012-12-20 22:20:12 -08:00
James Zern
2c724968d2 cwebp/jpegdec: add JPEG metadata extraction 
the values of EXIF/XMP/ICC are unused and Extended XMP for payloads >
64k is unsupported.

Change-Id: If721aa2009335ce090148b7ecd7ea8459f9b942d
 2012-12-20 18:35:38 -08:00
James Zern
dba64d91bb cwebp: add PNG metadata extraction 
the values of XMP/EXIF/ICC are currently unused.

Change-Id: I39d78b9a179f2d36c9c8ea12776bfdf6d8d18663
 2012-12-20 18:32:09 -08:00
Urvang Joshi
1f075f89b0 Lossless spec corrections/rewording/clarifications 
- Correct BNF for 'predictor-image' and 'color image'
- Correct some references to 'br', 'VP8LReadBits' and 'ReadStream'
- Correct value ranges in distance mapping table.
- Rewrite section 4 (some rearrangement, rewording, adding context etc).
- Similarly, rewrite section 5.

Change-Id: If487490c2553b3f7982b9fcca68d98bab5017e3c
 2012-12-20 10:44:42 -08:00
James Zern
2914ecfd56 cwebp/tiffdec: add TIFF metadata extraction 
currently the values of XMP/ICC are unused and EXIF is ignored.

Change-Id: I1d8b73bde4db2768f117158f986aadbaaec45804
 2012-12-19 18:26:05 -08:00
Urvang Joshi
d82a3e3391 More corrections/clarifications in lossless spec: 
- Rectify a few BNF descriptions
- Corrections in "Decoding Flow of Image Data" section:
  1. The sequence in case of "S < 256" should be green, red, blue, alpha.
  2. In case of "S >= 256 + 24", the index should be "S - (256 + 24)".
- Provide more description to clarify "Decoding Flow of Image Data" section.
- Some cosmetics: use '1's instead of '1, 2, 3...' sequence, as kramdown takes
  care of sequencing.

Change-Id: I2b76caf72f67aae813522dc1a4115f8ec8ea6db7
 2012-12-17 11:40:23 -08:00
James Zern
bd0025579f cwebp/tiff: use the first image directory 
tiffdec does not support and warns about multi-directory images.
previously, the code would read all the directories and thus attempt to
use the last rather than the first as the message suggests.

Change-Id: I3a10c778e6e924a3df75b41c26a9c03afb761044
 2012-12-15 18:49:38 -08:00
James Zern
df7aa07605 Merge "Cleanup around jpegdec" 2012-12-14 19:27:49 -08:00
Pascal Massimino
0f57dcc31f decoding speed-up (~1%) 
- precompute filtering strength once for all at the beginning
  instead of per-macroblock
- reduce size of VP8MB struct from 8 bytes to 4.
- removed VP8StoreBlock() accordingly

Change-Id: Icf3d329473e21c464770be3d72a04c9ee4c321f2
 2012-12-14 10:22:54 -08:00
Urvang Joshi
bcec339b01 Lossless bitstream clarification: 
Clarify what the pixels of a color transform image are.

Change-Id: I720248b5417857468d54952440cf1bae6c091042
 2012-12-12 14:03:44 -08:00
James Zern
6bf208748c add examples/metadata.c 
relocates the static functions from metadata.h and adds MetadataCopy()
to the interface

Change-Id: I28bfa9233d3dd70dddf6b561fe0bf4be378db1ec
 2012-12-11 18:10:09 -08:00
pascal massimino
207f89c0dc Merge "configure: add libwebpdemux status to summary" 2012-12-11 02:07:35 -08:00
skal
1bd287a6e4 Cleanup around jpegdec 
* change some (*func_ptr) construct to func_ptr simply.
  * remove one memcpy
  * group #include related to decoding together

Change-Id: If751cfbd9e78be75c57fb60fc9c937900c2c8fe0
 2012-12-11 11:02:39 +01:00
pascal massimino
9145567982 Merge "cosmetics: use '== 0' in size checks" 2012-12-11 01:48:54 -08:00
James Zern
d6b88b7694 cosmetics: use '== 0' in size checks 
Change-Id: I8ac18e2e570e4c6a8569a3955afa11fc943bee28
 2012-12-10 23:27:34 -08:00
James Zern
d3dace2ff0 cosmetics: jpegdec 
- squash some whitespace
- remove unnecessary pointer check

Change-Id: I06208566a5621786479956ea658434f5c4d62fcc
 2012-12-10 23:26:11 -08:00
James Zern
2f69af732e configure: add libwebpdemux status to summary 
Change-Id: I3b11d91de6780496b72bd89f93b49350e4350203
 2012-12-10 23:08:53 -08:00
James Zern
1c1c5646a5 cwebp: extract tiff decoding to its own module 
Change-Id: If98d0d37de34b63ac10d826150237b5f99446532
 2012-12-10 22:37:04 -08:00
James Zern
6a871d66a4 cwebp: extract jpeg decoding to its own module 
Change-Id: I45e1f0fa7b34286dd98926e0485e5a8ab1964570
 2012-12-07 20:12:46 -08:00
James Zern
2ee228f9a5 cwebp: extract png decoding to its own module 
Change-Id: I80dd09fe1f1c6317e9d0cdd422438bda11b43ed5
 2012-12-07 20:02:41 -08:00
James Zern
4679db006c Merge "cwebp: add metadata framework" 2012-12-06 14:35:20 -08:00