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Author SHA1 Message Date
James Zern
241ddd38e2 doc: delete mux container pdf 
The source is now webp-container-spec.txt.

Change-Id: I43debf616b7eec774b5e1586c286974c7332fb48
 2012-01-17 12:54:51 -08:00
James Zern
8b1ba272d2 doc: update VP8 decode guide link 
The draft is now RFC6386.

Change-Id: Ief019357af5a5de9c6290cafd34db09d984f58aa
 2012-01-17 12:52:27 -08:00
James Zern
7e4371c5b3 WebPMuxCreate: fix unchecked malloc 
Change-Id: Ic824cdfbede4abe8e5106904dd17d564bb1b32d4
 2012-01-15 11:18:23 -08:00
James Zern
eb425586e1 Merge "have makefile.unix clean up src/webp/*~ too" 2012-01-13 14:27:46 -08:00
James Zern
a85c363186 Merge "correct EncodeAlpha documentation" 2012-01-13 14:27:03 -08:00
James Zern
a33842fdb0 Merge "Update webp container spec with alpha filter options." 2012-01-13 14:25:39 -08:00
Urvang Joshi
8d6490dae6 Incremental support for some of the mux APIs. 
This CL adds incremental support for WebPMuxCreate() and
WebPMuxGetFeatures()

Change-Id: I312122f5e817d58366e18ae238cb9e2a493811fb
 2012-01-13 14:47:53 +05:30
Pascal Massimino
b8375abd08 have makefile.unix clean up src/webp/*~ too 
Change-Id: Ida17b92346055b197fe6ccb60a9ac223ddd46f90
 2012-01-12 18:49:29 -08:00
James Zern
b5855fc78d correct EncodeAlpha documentation 
The paeth filter was removed in 8ca2076

Change-Id: I743502147da4e0b5506e49382311b8f592973d41
 2012-01-12 18:37:45 -08:00
Urvang Joshi
dba37fea0e Update webp container spec with alpha filter options. 
Change-Id: I032f350c8c698aeb139f7dd148f01a0a3b012b6d
 2012-01-12 18:25:00 -08:00
Pascal Massimino
2e74ec8b5f fix compile under MINGW 
there was a type conflict around INT32 (in libjpeg).

Patch by nipmarsh
Issue 102: http://code.google.com/p/webp/issues/detail?id=102

Change-Id: I6425b6b9b9861bcaa8bb1adc8a78541e44031a6e
 2012-01-12 04:53:30 -08:00
Pascal Massimino
716d1d7f87 fix suboptimal MAX_LEN cut-off limit 
MAX_LEN -> max_len
This was sub-optimal at the end of the picture, when there's
less than MAX_LEN bytes left to match.

Change-Id: I5ebe1fca4e7c112dcd34748a082d1c97f95eb099
 2012-01-10 07:41:11 -08:00
Pascal Massimino
57cab7b891 Harmonize the alpha-filter predictions at boundary 
often reduces compressed size by ~10's of bytes
+ refactored / sped-up the prediction code (gradient: ~30% faster)

Change-Id: I26bd983655dad4f85d5c5ddc20a1980f384c4dd6
 2012-01-10 03:21:13 -08:00
pascal massimino
3a9895340f Merge "Fix bug for Alpha in RGBA_4444 color-mode." 2012-01-09 02:59:59 -08:00
Pascal Massimino
8ca2076de1 Introduce a 'fast' alpha mode 
.. where only 2 filtering modes are potentially
tried, instead of all of them. This is fast than the exhaustive 'best'
mode, and not much worse.

Options for cwebp are:
 -alpha_filter none
 -alpha_filter fast      (<- default)
 -alpha_filter best      (<- slow)

Change-Id: I8cb90ee11b8f981811e013ea4ad5bf72ba3ea7d4
 2012-01-09 02:37:44 -08:00
Vikas Arora
221a06bb16 Fix bug for Alpha in RGBA_4444 color-mode. 
Fix bug for Alpha data in RGBA_4444 color-mode.
The Alpha data is required to be clipped [0, 15] while
converting from 8 bits to 4 bits.

Change-Id: I80705d575c35121beb9633a05ec8823435c79586
 2012-01-09 14:07:30 +05:30
James Zern
ad1e163a0d cosmetics: normalize copyright headers 
Change-Id: I5e2462b101e0447a4f15a1455c07131bc97a52dd
 2012-01-06 14:49:06 -08:00
James Zern
c77424d7eb cosmetics: light include cleanup 
remove some unused includes

Change-Id: I07fabf707e8eac7f204757e68dab1057fd21aef1
 2012-01-06 14:38:34 -08:00
James Zern
9d0e17c9a9 fix msvc build breakage after 252028a 
replace inline with WEBP_INLINE; inline is reserved for c++ code
w/visual studio

Change-Id: Ib06c6a12fd786701740d8b260d9aa310ee81fddf
 2012-01-05 18:26:40 -08:00
Urvang Joshi
7c4c177c39 Some readability fixes for mux library 
Add a #define for UNDEFINED_CHUNK_SIZE and remove a misleading comment.

Change-Id: I5c56a12f1245e647f913c35c6a34d2e5d658415e
 2012-01-05 17:53:51 +05:30
pascal massimino
d8a47e66f7 Merge "Add predictive filtering option for Alpha." 2012-01-05 00:33:32 -08:00
Vikas Arora
252028aaac Add predictive filtering option for Alpha. 
Add predictive filtering option for Alpha plane.
Valid range for filter option is [0, 5] corresponding to prediction
methods none, horizontal, vertical, gradient & paeth filter.
The prediction method 5 will try all the prediction methods (0 to 4)
and pick the prediction method that gives best compression.

Change-Id: I9244d4a9c5017501a9696c7cec5045f04c16d49b
 2012-01-05 13:55:35 +05:30
pascal massimino
9b69be1cdc Merge "Simplify mux library code" 2012-01-05 00:15:48 -08:00
Urvang Joshi
a056170eca Simplify mux library code 
Refactor mux code into Read APIs, Set/Delete APIs and internal
objects/utils.

Change-Id: Ia4ce32ec18cf0c1c75de9084fbb28840d46892b4
 2012-01-05 12:23:08 +05:30
James Zern
992187a380 improve log2 test 
- add check for native log2 to configure
- use a common define (NOT_HAVE_LOG2) to enable use of local library
  version for non-autoconf platforms without their own version,
  currently msvc and android

This uses a negative (NOT_HAVE_) to simplify the ifdef

Change-Id: Id0610eed507f8bb9c5da338918112853d5c8127a
 2012-01-04 18:49:37 -08:00
Pascal Massimino
e852f83205 update Android.mk file list 
Change-Id: Idffc497931c85582725e65f1d7b7384bcee0fdd5
 2011-12-26 02:39:56 -08:00
Pascal Massimino
a90cb2be6e reduce number of copies and mallocs in alpha plane enc/dec 
Change-Id: Ice48d2dd403c18870567ee6e1b210b1eb3d5b44f
 2011-12-23 01:21:53 -08:00
James Zern
b1662b0530 fix some more type conversion warnings w/MSVC 
API & memory related warnings will be dealt with separately

Change-Id: I8a7893baa4d5035c963fb3c16e0bb4eee742e968
 2011-12-21 16:07:16 -08:00
Pascal Massimino
223d8c60aa fix some uint64_t -> int conversion warnings with MSC 
Change-Id: I5dc314c9d1a3cbda095be3c90886983500104867
 2011-12-21 14:43:52 -08:00
James Zern
c1a0437b87 Merge "simplify checks for enabling SSE2 code" 2011-12-20 17:42:59 -08:00
James Zern
f06817aaea simplify checks for enabling SSE2 code 
also fixes build issues under vs11 which has a native arm compiler for
windows 8 targets

Change-Id: Id76c2deae9fc9de147d13ad0d34edffcb5a726c4
 2011-12-20 17:41:55 -08:00
James Zern
948d4fe94f silence a msvc build warning 
implicit double -> float conversion; avoiding sqrtf (c99) for
compatibility

Change-Id: If9b367dde237fc5173c1445cc60b16aa6ad2821c
 2011-12-19 23:04:01 -08:00
James Zern
911795490e vwebp: msvc build tweaks 
snprintf -> _snprintf / remove double->float warnings

Change-Id: I5dcdc394cf7e2d37205beaf83ed0f80a18ec06ab
 2011-12-16 19:30:33 -08:00
Pascal Massimino
7937b409e7 simple WebP viewer, based on OpenGL 
Quite handy and simple (for now).
It's not yet incorporated within the build system (autotools or
makefile.unix), because it gets complicated with OpenGL. TODO(later).

For now, there's some ready-to-use command line for compiling on Linux
or Mac in the header of vwebp.c

Later, this tool will be supplemented with support for animation,
tiling, zooming, etc.

Change-Id: I292972cea4862536afbe8c9ec444c590d152f086
 2011-12-13 14:02:04 -08:00
Pascal Massimino
6aac1df17b add a bunch of missing 'extern "C"' 
Change-Id: I8c0ada049ce9fa7ef14164b90d58e999cdabba53
 2011-12-13 10:51:32 -08:00
James Zern
421eb99db3 Merge "Remove assigned-but-not-used variable "br"" 2011-12-08 10:41:18 -08:00
Pascal Massimino
91e27f4573 better fitting names for upsampling functions 
Change-Id: I816e81586c9e1a74ebc5516598dbd4ae0ddf48d8
 2011-12-08 06:42:53 -08:00
Martin Olsson
a5d7ed5c4b Remove assigned-but-not-used variable "br" 
Fixes gcc 4.6.x -Wunused-but-set-variable compiler warning:

	libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../.. -Wextra -Wall -Wunused-but-set-variable -MT libwebpdecode_la-idec.lo -MD -MP -MF .deps/libwebpdecode_la-idec.Tpo -c idec.c  -fPIC -DPIC -o .libs/libwebpdecode_la-idec.o
	idec.c: In function 'DecodeRemaining':
	idec.c:371:17: warning: variable 'br' set but not used [-Wunused-but-set-variable]

Change-Id: Ib037be9634b5b802ba9f1e2ef156a8fdf9630752
 2011-12-08 15:42:01 +01:00
Pascal Massimino
f62d2c9497 remove unused 'has_alpha' from VP8GetInfo() signature 
alpha information is not to be found at RIFF chunks level, not
in the VP8 bitstream (that was a tmp hack)

Change-Id: Idd1629c696b03c26f6f30650d7216f627f1761df
 2011-12-08 06:41:40 -08:00
Pascal Massimino
08e865822a trap alpha-decoding error 
Improves robustness to bad bitstream.

Change-Id: I87ca03ccd12d4d690904b35f8dfc2a20a28fb47b
 2011-12-08 06:34:00 -08:00
Pascal Massimino
b361eca1c5 add cut-off to arith coder probability update. 
This speeds things up for long message, while not damaging
the stats too much for usual-sized cases

Change-Id: I3f45e28b771d701e2e1da11eb800de18c4ed12fc
 2011-12-08 06:27:11 -08:00
Urvang Joshi
8666a93aae Some bug-fixes for images with alpha. 
- Fix the off-by-one diff when cropping with simple-filter.
- Fix a bug in incremental decoding in case of alpha.
- In VP8FinishRow(), do not decode alpha when y_start > y_end.
- Correct output of alpha channel for MODE_ARGB.
- Correct output of alpha channel for MODE_RGBA_4444.

Change-Id: I785763a2a704b973cc742ad93ffbb53699d1fc0a
 2011-12-07 15:12:50 +05:30
Pascal Massimino
273a12a013 fix off-by-1 diff in case cropping and simple filtering 
Change-Id: I6dea172d0cf129f9986b8a3e1eea85fa97a70402
 2011-12-05 08:37:55 -08:00
James Zern
2f741d1e13 webpmux: ReadImage: fix ptr free in error case 
allocate to temporaries and deal with output pointers in one place to
reduce casting.

Change-Id: Ib12d866440184315536f35a15eb5adeba7879ae7
 2011-12-02 17:58:20 -08:00
James Zern
721f3f48e7 fix alpha decode 
- remove left-over WEBP_EXPERIMENTAL_FEATURES #ifdef

Change-Id: I2b91ccd2e2b3ebea63d5f698f90206feec30a4db
 2011-12-02 11:00:27 -08:00
Pascal Massimino
60942c8cea fix the has_alpha_ order 
Change-Id: I26211732584f6181bf763497818b45515e394c21
 2011-12-02 10:26:42 -08:00
Pascal Massimino
30971c9e95 Implement progress report (and user abort) 
New cwebp flag is -progress

Change-Id: Ied872cca13f512036860783bbee1bdbccad72768
 2011-12-01 14:19:40 -08:00
James Zern
eda520a92e cosmetics after 9523f2a 
spelling, indent and other style conformance

Change-Id: Iad720c0d85f2147676e302439d57628712d3b109
 2011-12-01 13:05:31 -08:00
pascal massimino
38bd5bb524 Merge "Better alpha support in webpmux binary" 2011-12-01 06:01:33 -08:00
pascal massimino
ccbaebfe30 Merge "Updated the includes to relative paths." 2011-12-01 04:20:46 -08:00