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Author SHA1 Message Date
James Zern
06ba05909e restore authorship to lossless bitstream doc 
lost in port from pdf

Change-Id: I17bad348577be9818c036e557a0beba63ffcc689
 2012-07-11 13:46:00 -07:00
Pascal Massimino
44a09a3ccd add missing description of the alpha filtering methods 
Change-Id: Id7bdf5e30121ce5d610b7fa00f64bcd2d7bed2bf
 2012-07-10 19:50:30 -07:00
James Zern
63db87dd2a Merge "vwebp: add checkboard background for alpha display" 2012-07-10 12:38:16 -07:00
James Zern
a73b8978d1 vwebp: add checkboard background for alpha display 
Change-Id: Iefb02f38c0479e61334844d9110cd1b735f0395d
 2012-07-10 12:02:03 -07:00
pascal massimino
939158ce4f Merge "vwebp: fix info display" 2012-07-10 07:37:28 -07:00
James Zern
b35c07d9a7 vwebp: fix info display 
change alpha intensity to 1 from 0; broken since alpha blending was enabled.

Change-Id: Ic8bb73b62e602ae56e08e9d5a77fdc6aa76b54c5
 2012-07-09 22:47:10 -07:00
Pascal Massimino
48b39eb17a fix underflow for very short bitstreams 
+ hardened the asserts

Change-Id: Ie798ef2f9d848c131f6f84a35ea28ef254822d1e
 2012-07-09 16:47:34 -07:00
James Zern
7e622984bb cosmetics: param alignment, manpage wording 
after eb6f9b8, c0e8859

Change-Id: I79bcea77d65eb6d1abf1156796996f3b9909b62b
 2012-07-07 10:37:26 -07:00
pascal massimino
1bd7dd5097 Merge changes I7b0afb0d,I7ecc9708 
* changes:
  Get rid of image_info_ from WebPChunk struct.
  WebP Container Spec:
 2012-07-04 16:32:29 -07:00
pascal massimino
ac69e63eeb Merge "Updated cwebp man's help for Alpha & Lossless." 2012-07-04 16:30:03 -07:00
Urvang Joshi
c0e8859d81 Get rid of image_info_ from WebPChunk struct. 
The image_info_ was used only in GetImageCanvasWidthHeight(). So, now
we infer it from data there.
This removal fixes a bug: earlier, 'image_info' wasn't initialized in
the WebPMuxCreate() flow, and so the canvas width/height were being
calculated to be zero.

Also, a related refactoring: Combine CreateImageInfo() and
CreateDataFromImageInfo() into a single function CreateFrameTileData().

Change-Id: I7b0afb0d36dc6e13b9d6a1135fb027aa4e03716c
 2012-07-04 18:49:56 +05:30
Urvang Joshi
135ca69eb7 WebP Container Spec: 
Clarify that a file must contain at least one frame.

Change-Id: I7ecc97084498adc108275585d0c7d0aaa9f5c6ed
 2012-07-04 17:28:17 +05:30
Vikas Arora
eb6f9b8a72 Updated cwebp man's help for Alpha & Lossless. 
Change-Id: Iaa129685fdbd95c3b408c92c77532b321bc2637f
 2012-07-04 12:51:56 +05:30
Pascal Massimino
0fa844fb8f cosmetic fixes on assert and 'const' where applicable 
Change-Id: Iede15b8464be453e7d12929513ed82183921265c
 2012-07-03 05:50:36 -07:00
Pascal Massimino
7f22bd2596 check limit of width * height is 32 bits 
Update the RIFF-specs file too

Change-Id: I113a7e25da2f7a19c1344c1dc5d496127cfe2596
 2012-07-03 05:42:13 -07:00
James Zern
16c46e83ac autoconf/make: cosmetics: break long lines 
Change-Id: If08350a27cdfc4371dcb28ecb9d88d05eceaf977
 2012-07-02 21:48:18 -07:00
James Zern
ab22a07afc configure: add helper macro to define --with-* 
replaces repeated --with-{jpeg,png,tiff}{include,lib}dir defines

Change-Id: Ic0eb8622dfc94184ab74f8302112c36547a34664
 2012-07-02 21:26:48 -07:00
James Zern
c17699b343 configure: add libtiff test 
Change-Id: Ia5828797bae9c993a3d00ddd5e0089d3b828e975
 2012-07-02 18:01:49 -07:00
pascal massimino
0e09732c5e Merge "cwebp: fix crash with yuv input + lossless" 2012-07-02 14:40:00 -07:00
pascal massimino
88a510ff53 Merge "fix big-endian VP8LWriteBits" 2012-07-02 14:38:32 -07:00
James Zern
da99e3bfcd Merge "Makefile.vc: split mux into separate lib" 2012-07-02 14:36:17 -07:00
James Zern
7bda392b50 cwebp: fix crash with yuv input + lossless 
Change-Id: Ia27c925f532a4243369288e954abdc063b9f94f9
 2012-07-02 14:33:25 -07:00
James Zern
f56a369ab0 fix big-endian VP8LWriteBits 
bits would be lost if n_bits was > 17

Change-Id: Id315d075075338a08e10c04faa91cab347a53591
 2012-07-02 14:30:41 -07:00
pascal massimino
54169d6cd7 Merge "cwebp: name InputFileFormat members consistently" 2012-07-02 13:19:27 -07:00
James Zern
e2feefa9b8 Makefile.vc: split mux into separate lib 
similar to other builds, reusing some variable naming from
makefile.unix.
also change the main output file names to libwebp{,mux}.{lib,dll} with
the import lib retaining the _dll suffix.

Change-Id: I6bbc4fb39ab37957f153e9f31954387b24094581
 2012-07-02 12:37:57 -07:00
pascal massimino
27caa5aa34 Merge "cwebp: add basic TIFF support" 2012-07-02 11:39:21 -07:00
James Zern
d8921dd4e6 cwebp: name InputFileFormat members consistently 
append an '_'. TIFF introduced TIFF_ to avoid a name clash.

Change-Id: Iebe484d43aeb8e1912cd5bd10d36e1c5e66a4b42
 2012-07-02 11:24:23 -07:00
James Zern
6f76d246ba cwebp: add basic TIFF support 
Change-Id: I29f354e1ef9cf8f23002cf2e15814a53a94b4ed5
 2012-07-02 11:22:52 -07:00
pascal massimino
4691407bb3 Merge changes If39ab7f5,I3658b5ae 
* changes:
  WebPMuxCreate() error handling:
  Fix a memleak in WebPMuxCreate()
 2012-07-02 01:46:17 -07:00
Vikas Arora
cca7c7b81b Fixed nit: 10 -> 10.f 
Change-Id: I0cdb096525460b27f3adcb9f802f6dc193d5f590
 2012-07-02 11:29:01 +05:30
Urvang Joshi
5d09a244b7 WebPMuxCreate() error handling: 
Directly return NULL if no allocation is done yet.

Change-Id: If39ab7f5a55833263d3372fa0a5d9b0a600cb9ed
 2012-07-02 11:20:09 +05:30
Urvang Joshi
777341c3d0 Fix a memleak in WebPMuxCreate() 
Change-Id: I3658b5ae487082aef28989eb8abc274c207fef0f
 2012-07-02 10:19:21 +05:30
James Zern
61c9d161d5 doc: correct lossless prefix coding table & code 
extra bit counts and literal distance return value

Change-Id: I290e3ee8900469503a323f87e9dbb8ca5cb4afc7
 2012-07-01 14:10:32 -07:00
James Zern
4c3975792b Merge "mark VP8{,L}{GetInfo,CheckSignature} as WEBP_EXTERN" 2012-06-29 10:31:26 -07:00
pascal massimino
e4e36cc6c6 Merge "Mux: Allow only some frames/tiles to have alpha." 2012-06-29 05:17:26 -07:00
pascal massimino
ad2aad3c21 Merge "WebP Decoding error handling:" 2012-06-29 05:15:55 -07:00
Urvang Joshi
97649c8f6b Mux: Allow only some frames/tiles to have alpha. 
And related const fixes.

Change-Id: I79f6f1b9f8c6faac8cc4ef24b58edff6d90de045
 2012-06-29 17:17:19 +05:30
Vikas Arora
f864be3b2c Lower the quality settings for Alpha encoding. 
Evaluated the impact of this change over 1000 image corpus.
The compression density is up (on average) by 1.2% and encoding time has
gone down considerably from 716 ms (per file) to 146 ms (per file)
(4.9X improvement in encoding time).

Change-Id: Ida562cc0bfe18c9d6f5f00873c95f8396b480eab
 2012-06-29 16:19:42 +05:30
Urvang Joshi
3ba81bbe8b WebP Decoding error handling: 
- Don't allow any extended chunks (except ALPH) without RIFF & VP8X
chunks.
- Also, don't allow VP8X without RIFF.

Change-Id: I1beba43e617ec637901aeeb93f2f484ec086a75d
 2012-06-29 14:32:21 +05:30
Pascal Massimino
fcc69923b9 add automatic YUVA/ARGB conversion during WebPEncode() 
Adds new methods WebPPictureARGBToYUVA() and WebPPictureYUVAToARGB()
Depending on the value of picture->use_argb_input,
the main call WebPEncode() will convert appropriately.
Note that both conversions are lossy, so it's recommended to:
* use YUVA input for lossy compression (picture->use_argb_input=0)
* use ARGB input for lossless compression (picture->use_argb_input=1)

Change-Id: I8269d607723ee8a1136b9f4999f7ff4e657bbb04
 2012-06-28 00:34:23 -07:00
Pascal Massimino
802e012a18 fix compilation in non-FANCY_UPSAMPLING mode 
Change-Id: Id0b1fad3a4888b6e9563a227412b2e6a656d9a2a
 2012-06-28 00:26:35 -07:00
Pascal Massimino
e012dfd90f make width/height coding match the spec 
* width/height in VP8X chunk is 24bit now
* Added some more constants #defines

Change-Id: I2f8ca7f965a247bccd341dd079ed2abf549c39d7
 2012-06-28 00:20:28 -07:00
James Zern
228d96a538 mark VP8{,L}{GetInfo,CheckSignature} as WEBP_EXTERN 
these functions are used by libwebpmux

Change-Id: Ifcb79e685f3a6b53007c0dc5f220737daba97d47
 2012-06-27 16:07:33 -07:00
Pascal Massimino
637a314f97 remove the now unused *KeepA variants 
Change-Id: I65217f3075e30bc9a7f38a49d09f01c9d7271d6a
 2012-06-27 10:00:48 -07:00
Urvang Joshi
d11f6fcc82 webpmux returns error strings rather than numbers 
Change-Id: Ifc8d8aaf0f6c03ecb1508ec7fbc34c918bf69c61
 2012-06-27 16:55:57 +05:30
James Zern
fcec059322 makefile.unix: cwebp: fix OSX link 
this is more a workaround than a fix. this change forces the tables
from yuv.h into the data section rather than generating them as common
blocks. prior to this the linkage would fail with e.g.,

Undefined symbols:
...
  "_VP8kClip4Bits", referenced from:
      _Yuv444ToRgba4444 in libwebp.a(libwebpdsp_la-upsampling.o)

broken since:
 48f8275 add colorspace for premultiplied alpha

Change-Id: I69c36758c31cd3a4b3ea5c412674d1a47b45447e
 2012-06-26 18:09:55 -07:00
pascal massimino
6b811f1b06 Merge "doc: remove lossless pdf" 2012-06-22 15:43:20 -07:00
James Zern
c963482124 doc: remove lossless pdf 
superseded by webp-lossless-bitstream-spec.txt

Change-Id: I5f233d4c3c2fa048a180db950ad4319ffdb9bced
 2012-06-22 15:25:03 -07:00
James Zern
b9ae4f0d88 cosmetics after mux changes b74ed6e, b494ad5 
Change-Id: I8f693b1ba2537de89bda1dfbcf3b95abd17e420a
 2012-06-22 14:30:01 -07:00
Urvang Joshi
b494ad5096 Mux: only allow adding frame/tiles at the end. 
Change-Id: I5d685628da8c8ac85144cee2e5808b30ec79fef9
 2012-06-22 11:18:18 -07:00