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Author SHA1 Message Date
Urvang Joshi
cc635efa01 Container spec: clarify the background color field 
Change-Id: I03f634cbd147c2851eb06ddbc7b1014e04e21038
 2013-03-26 17:22:18 -07:00
James Zern
e3e339497e container doc: move RIFF description to own section 
- remove some little used terms
- condense file header description
- add description of FourCC

Change-Id: Ia873652f41789811f3fb2ec97182a068ac727961
 2013-03-26 17:16:12 -07:00
James Zern
4299f39852 libwebp/mux: fix double free 
transfer ownership of chunk passed in ChunkSetNth(). prevents freeing
the chunk in e.g., MuxImageParse() when a partial assignment (alpha but
no image) has occurred.

Change-Id: Ia69656b04fdf50f098f3816b54abd4e191248de3
 2013-03-26 13:31:47 -07:00
James Zern
33f9a692d9 Merge "demux: keep a frame tail pointer; used in AddFrame" into 0.3.0 2013-03-26 13:30:10 -07:00
skal
a2a7b95916 use WebPDataCopy() instead of re-coding it. 
also: fix some 0 vs NULL tests

Change-Id: I2b6f65a1e658211e5b4a323c4f9f502744206ec7
 2013-03-26 20:40:24 +01:00
James Zern
6f18f12f99 demux: keep a frame tail pointer; used in AddFrame 
this speeds up the parse of a file with a large number of frames.

Change-Id: Ibc61324eb50a04438f811a6f7787d378d763c104
 2013-03-26 11:27:51 -07:00
skal
e5af49e9c0 add doc precision about WebPParseHeaders() return codes 
Change-Id: I970900f4a5abb4877a716bd4eb15939655ef5dad
 2013-03-25 17:54:46 -07:00
James Zern
db46daab97 Merge "Makefile.vc: fix dynamic builds" into 0.3.0 2013-03-25 16:41:26 -07:00
James Zern
53c77afc52 Merge "gif2webp: Bgcolor fix for a special case" into 0.3.0 2013-03-25 16:33:51 -07:00
Urvang Joshi
a5ebd143d6 gif2webp: Bgcolor fix for a special case 
When transparent color index and background color index are same,
we should set background color to 0x00ffffff (transparent).

For this, we delay setting the background color until we have read the
first frame.

Change-Id: I443609b9c7697a2b94a66992460cff8465b3c127
 2013-03-25 16:30:27 -07:00
James Zern
6378f23876 Merge "vwebp/animation: fix background dispose" into 0.3.0 2013-03-25 16:24:02 -07:00
Pascal Massimino
3c8eb9a806 fix bad saturation order in QuantizeBlock 
Saturation was done on input coeff, not quantized one.

This saturation is not absolutely needed: output of FTransformWHT
is in range [-16320, 16321]. At quality 100, max quantization steps is 8,
so the maximal range used by QuantizeBlock() is [-2040, 2040].
But there's some extra bias (mtx->bias_[] and mtx->sharpen_[]) so
it's better to leave this saturation check for now.

addresses issue #145

Change-Id: I4b14f71cdc80c46f9eaadb2a4e8e03d396879d28
 2013-03-25 14:53:29 -07:00
James Zern
04c7a2ecf0 vwebp/animation: fix background dispose 
buffer the last frame's details to perform DISPOSE_BACKGROUND on the
image's area, rather than the entire canvas.

also fixes transparent backgrounds with animated images

Change-Id: I53e4d70c441e1eeb136f1d01e7c88de4f9ecff53
 2013-03-25 13:39:27 -07:00
James Zern
81a50695de Makefile.vc: fix dynamic builds 
broken since:
e2feefa Makefile.vc: split mux into separate lib

broken even more since:
b65c4b7 Makefile.vc: add libwebpdecoder target

Change-Id: Ibb7a7f2c71ae63434a60d988ce15f0a4ed8fcaee
 2013-03-21 19:30:34 -07:00
James Zern
5f25c396ab update ChangeLog 
Change-Id: I52d96e616bb8687f69c6eaa2f28d40939a0e7813
 2013-03-20 17:09:12 -07:00
James Zern
14d42af207 examples: don't use C99 %zu 
this would require a PRIuS or similar macro for proper platform
compatibility (Visual Studio for instance would be variants of %lu)

Change-Id: I1af530c7c358c91b845acde1d8c12ef46c2ef746
 2013-03-20 16:59:35 -07:00
James Zern
5ccf1fe540 update ChangeLog 
Change-Id: If845005a1d62730d23f7f138ffad4f45acdd2bfe
 2013-03-20 15:02:23 -07:00
James Zern
2560c243f3 update NEWS 
Change-Id: Ic17003de4451ae50901b9a9fbffa15f2929561b8
 2013-03-20 14:59:58 -07:00
James Zern
f43bafc3e6 Merge changes Iecccb09c,If5ee9fd2,I3e181ce4 into 0.3.0 
* changes:
  dwebp: warn when decoding animated webp's
  Decode: return more meaningful error for animation
  WebPBitstreamFeatures: add has_animation field
 2013-03-20 14:56:29 -07:00
James Zern
a788644f93 dwebp: warn when decoding animated webp's 
the decode will fail; provide a bit more background info

Change-Id: Iecccb09cf0fa9f8c1c3e87636a55e1f251dee023
 2013-03-20 13:59:38 -07:00
James Zern
302efcdb41 Decode: return more meaningful error for animation 
VP8_STATUS_NOT_ENOUGH_DATA -> VP8_STATUS_UNSUPPORTED_FEATURE

Change-Id: If5ee9fd2c99fc5502996d3c786848fd9cc118fe7
 2013-03-20 13:59:22 -07:00
James Zern
ad452735c3 WebPBitstreamFeatures: add has_animation field 
Change-Id: I3e181ce463b0e4833bfd29f8052b21ebe0bca977
 2013-03-20 13:49:56 -07:00
Pascal Massimino
783dfa4995 disable FRGM decoding for good in libwebpmux 
Change-Id: I2f24d100f93488f6b0bf9ccc5818f9177d73948b
 2013-03-20 13:31:14 -07:00
James Zern
4b956be095 Update ChangeLog 
Change-Id: I5f74413ec584442aa824238ccc390a53f9fd8638
 2013-03-19 18:12:49 -07:00
James Zern
ad8b86d707 update NEWS 
Change-Id: I72598ecd3e7e6f41f8554c645cf25cd21304fe61
 2013-03-19 17:36:38 -07:00
James Zern
3e084f63f5 Merge "demux cosmetics: comments/rename internal function" into 0.3.0 2013-03-19 17:09:07 -07:00
James Zern
d3f8c621b5 Merge "move WebPFeatureFlags declaration" into 0.3.0 2013-03-19 17:08:31 -07:00
James Zern
7386fe5047 Merge "libwebp{demux,mux}: install mux_types.h" into 0.3.0 2013-03-19 17:07:32 -07:00
pascal massimino
d6cd4e9056 Merge "bump decode abi" into 0.3.0 2013-03-19 16:52:06 -07:00
James Zern
17f8da5c51 bump decode abi 
treating as a patch number in this case to disambiguate releases.

Change-Id: Ica1379c66473a961f2dcd5f3282281b8bf1bc276
 2013-03-19 16:48:56 -07:00
Pascal Massimino
97684ae269 Merge "add doc precision about WebPDemuxPartial()" into 0.3.0 2013-03-19 16:44:26 -07:00
James Zern
f933fd2a27 move WebPFeatureFlags declaration 
from private format_constants.h to public mux_types.h
also do the reverse for MKFOURCC()

Change-Id: I3aa86b007e9dbfed37a170989164ac3a77de2bd5
 2013-03-19 16:10:41 -07:00
James Zern
289bc47b65 libwebp{demux,mux}: install mux_types.h 
required by demux.h and mux.h

Change-Id: Ib33cee1d95e575233204e70b62caf7a6366772c7
 2013-03-19 14:54:04 -07:00
Pascal Massimino
224e8d4630 add doc precision about WebPDemuxPartial() 
it wasn't clear the data can be incomplete

Change-Id: I1482379aaea31e08a65c90f15e32edec2472e17e
 2013-03-19 14:25:59 -07:00
James Zern
4c18e80cf7 demux cosmetics: comments/rename internal function 
ParseFrame -> ParseAnimationFrame

Change-Id: I27538927d16285e0793be5be78b0f15f4155dd83
 2013-03-19 13:55:29 -07:00
James Zern
7cfd1bf1fc update AUTHORS 
Change-Id: I8d90f49439c04f86e8570ecca25e18339cb46917
 2013-03-19 00:26:05 -07:00
James Zern
401f7b856f Merge "speed-up lossless (~3%) with ad-hoc histogram cost evaluation" into 0.3.0 2013-03-18 17:48:59 -07:00
James Zern
1fc8ffca35 Merge "makefile.unix: dist related changes" into 0.3.0 2013-03-18 16:53:46 -07:00
James Zern
8a89c6ed28 Merge changes I466c377f,Ib761ebd3,I694857fc into 0.3.0 
* changes:
  gif2webp: only write error messages to stderr
  gif2webp: fix crash on open failure with libgif5
  gif2webp: silence a unused param warning
 2013-03-18 16:52:28 -07:00
skal
f4ffb2d59a speed-up lossless (~3%) with ad-hoc histogram cost evaluation 
* merge cost calculation functions (BitsEntropy() and HuffmanCost())
* have HistogramAdd() specialized into separate functions
* use threshold to bail-out early
* revamp code a bit

* also: save memory by freeing free(histogram_image)

Change-Id: I8ee5d2cfa1462d5d6ea6361f5c89925a3720ef55
 2013-03-18 22:34:32 +01:00
James Zern
723847d5d7 gif2webp: only write error messages to stderr 
also output something if -o is not given, but the process succeeded

Change-Id: I466c377f0cbf8c9f45bb1839191b04dada9c5f0f
 2013-03-18 11:13:35 -07:00
James Zern
701b9e2af4 makefile.unix: dist related changes 
* make the 'all' target really build everything (default is still the
    core examples).
  * add demux/mux.h to HDRS_INSTALLED, install the corresponding libs
    too
  * install vwebp, webpmux, gif2webp and related manpages

Change-Id: Ib6036f2a1a05e40f106914c4bdbe9e3ad7336464
 2013-03-18 11:10:02 -07:00
pascal massimino
bb85b43727 Merge "update NEWS" into 0.3.0 2013-03-17 23:39:21 -07:00
James Zern
59423a2486 gif2webp: fix crash on open failure with libgif5 
output the current gif_error and use it instead of the NULL context to
retrieve an error message.

Change-Id: Ib761ebd36b3ddd6288375de46e671022d2381083
 2013-03-17 18:06:39 -07:00
James Zern
9acb17dea4 gif2webp: silence a unused param warning 
Change-Id: I694857fc6adb011f19d14780de4f8c71e2719707
 2013-03-17 17:04:54 -07:00
pascal massimino
7d9fdc2389 Merge "README updates" into 0.3.0 2013-03-17 02:40:44 -07:00
pascal massimino
5621934e82 Merge "build: fix install race on shared headers" into 0.3.0 2013-03-17 02:38:16 -07:00
pascal massimino
70809d89bb Merge "bump version to 0.3.0" into 0.3.0 2013-03-17 02:32:37 -07:00
James Zern
d851cd1d85 demux: make the parse a bit more strict 
* VP8L shouldn't have an alpha chunk
 * expect an animation to only contain frames, not a mix of image chunks
 * enforce ANIM/ANMF order
 * expect a full frame in a complete file

Change-Id: I953a8b6058f9bc00f1d042635548f158abdf6fce
 2013-03-16 16:37:31 -07:00
James Zern
28bb4107b1 update NEWS 
Change-Id: Icb277027ee6209527d82978ebcec03391940aac2
 2013-03-16 15:02:31 -07:00