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Author SHA1 Message Date
skal
3383885799 faster decoding (3%-6%) 
. revamped the boolean decoder to use less shifts
. added some description and ASCII art as explanations too.
. clarified the types further (bit_t, lbit_t, range_t, etc.)
. changed the negative field 'missing_' into positive 'bits_'

Some stats, decoding some randomly encoded WebP files:

with USE_RIGHT_JUSTIFY:
  BITS=32 => 133 files, 50 loops => 7.3s (1.097 ms/file/iterations)
  BITS=24 => 133 files, 50 loops => 7.3s (1.097 ms/file/iterations)
  BITS=16 => 133 files, 50 loops => 7.4s (1.120 ms/file/iterations)
  BITS=8 => 133 files, 50 loops => 7.5s (1.128 ms/file/iterations)

without USE_RIGHT_JUSTIFY:
  BITS=32 => 133 files, 50 loops => 7.5s (1.131 ms/file/iterations)
  BITS=24 => 133 files, 50 loops => 7.6s (1.142 ms/file/iterations)
  BITS=16 => 133 files, 50 loops => 7.6s (1.143 ms/file/iterations)
  BITS=8 => 133 files, 50 loops => 7.6s (1.149 ms/file/iterations)

Change-Id: I9277fb051676c05582e9c7ea3cb5a4b2a3ffb12e
 2013-02-14 15:42:58 +01:00
skal
5c3e381b2f Merge "add a -jpeg_like option" 2013-02-13 22:17:58 -08:00
Pascal Massimino
c23110467e remove unused declaration of VP8Zigzag 
Change-Id: I80bdf4b692dcdad1fc2b0cfffcaebb5fef5dde34
 2013-02-12 07:14:21 -08:00
James Zern
36152957af Merge "wicdec: add alpha support for paletted formats" 2013-02-06 23:33:24 -08:00
James Zern
c9f1649012 wicdec: add alpha support for paletted formats 
Fixes issue #141.

Change-Id: I5d8163329a9e363da9db9d70d25edeb29da32e9e
 2013-02-06 23:29:32 -08:00
James Zern
1262f81e37 Merge "wicdec: silence some warnings" 2013-02-06 23:21:26 -08:00
James Zern
e7ea61eb75 wicdec: silence some warnings 
-Wformat, -Wmissing-field-initializers and size type related

Change-Id: I92b1c7cc485bf59f94b5c0f8bb2137d87604f831
 2013-02-06 23:16:50 -08:00
skal
23c0f354a6 fix missing intptr_t->int cast for MSVC 
Change-Id: I39acdfbe287ef7b7f615d59e0729aab161189bf9
 2013-02-06 17:51:10 +01:00
skal
e895059a05 add a -jpeg_like option 
This option remaps internal parameters to better match
the expected compression curve of JPEG and produce output files
of similar size, but with better quality.

Change-Id: I96a1cbb480b1f6a0c6845a23c33dfd63f197b689
 2013-02-06 14:19:16 +01:00
pascal massimino
1f803f645d Merge "Tune alpha quality mapping to more reasonable values." 2013-02-05 10:50:28 -08:00
Urvang Joshi
1267d498dc Tune alpha quality mapping to more reasonable values. 
This results in a significant speedup  with minimal increase in file sizes.

Change-Id: I6ecefe33eee219fba4099810d04a916f7efbd292
 2013-02-05 19:49:35 +01:00
skal
043076e2ef Merge "speed-up lossless in BackwardTrace" 2013-02-05 10:46:06 -08:00
skal
f3a44dcd83 remove one malloc from TraceBackwards() 
Change-Id: I4f77c0240ca2ece86e8beab11d02c74277409921
 2013-02-05 19:43:43 +01:00
skal
0fc1a3a072 speed-up lossless in BackwardTrace 
we special-case code=2 (with a later TODO to adapt this on quality)

Change-Id: I93d43f5b3f8f1ef9f211cce253bb4b415918ee57
 2013-02-05 19:42:23 +01:00
James Zern
7c732e59f4 cwebp: centralize WebPCleanupTransparentArea() 
this can be safely called whether the picture has alpha or not

Change-Id: I0047fd4c110f1072f183f3d340682502bd6623d7
 2013-02-04 15:44:26 -08:00
James Zern
7381254e9a Merge "wicdec: add ICC profile extraction" 2013-02-04 15:43:39 -08:00
James Zern
e83ff7decd wicdec: add ICC profile extraction 
Change-Id: I4522cdd5a529f802f1eb566b6d94539612e0976b
 2013-02-02 10:40:49 -08:00
pascal massimino
146c6e3be8 Merge "cosmetics: pngdec: normalize default label location" 2013-02-02 00:18:37 -08:00
pascal massimino
a8f549d799 Merge "manpages: italicize option parameters" 2013-02-02 00:18:05 -08:00
pascal massimino
e118db83b1 Merge "encode.h: note the need to free() WebPMemoryWriter" 2013-02-02 00:12:59 -08:00
James Zern
1dfee6dbea cosmetics: pngdec: normalize default label location 
Change-Id: I25dd0e61898af3fcaff3d17cddedd3d39d4930aa
 2013-02-01 20:37:05 -08:00
James Zern
14c3820038 manpages: italicize option parameters 
Change-Id: Id7e4edde2a1c91fe4fbf96ddc280a06132e9986a
 2013-02-01 20:35:58 -08:00
James Zern
7defbfadbe encode.h: note the need to free() WebPMemoryWriter 
Change-Id: Iec873764e9f4c085c634498630b8c1ced3283984
 2013-02-01 19:18:47 -08:00
James Zern
88d382a042 cwebp: cleanup after memory_writer 
always initialize the memory_writer so it can be unconditionally freed
on exit

Change-Id: I9226addb588309446ec94abadfdde201f23195d2
 2013-02-01 19:17:26 -08:00
Pascal Massimino
12d6cecfbd fix extra space in dwebp.1 man 
Change-Id: Ifa3d91c73e0efeecb02365bc2168c830a01c759a
 2013-01-30 04:50:03 -08:00
Urvang Joshi
b01681a93f Fix for demuxer frame iteration: 
Return error in WebPDemuxGetFrame() when static method GetFrame()
returns NULL.

Change-Id: Idbc54037047c3df75209ac67ff8bede3f83042be
 2013-01-29 10:58:04 -08:00
Urvang Joshi
56c12aa698 Demuxer creation fix: 
If it's not a partial file and parser returns PARSE_NEED_MORE_DATA, then
consider it to be PARSE_ERROR.

Change-Id: Id652a345bd2a9f574970272dd0a00517de113215
 2013-01-29 10:53:52 -08:00
skal
66c810bc3c add a -yuv option to dwebp (very similar to -pgm) 
It will decode to raw (flat) YUV format, similar to what
cwebp can take as input. Makes the PSNR/SSIM calculation easier.

Change-Id: Iebfaedfc0bedc70c169b24ae4aabc701488d0644
 2013-01-28 23:22:14 +01:00
pascal massimino
841a3ba5da Merge "Remove -Wshadow warnings." 2013-01-28 13:15:54 -08:00
pascal massimino
8fd0252787 Merge "upsampling_neon.c: fix build" 2013-01-28 13:14:39 -08:00
Johann
6efed26865 Remove -Wshadow warnings. 
Accidentally carried some bad habits from SSE code. Copy over fixes
from 0d19fbf

Change-Id: I763312c9d176c434ba41f95602bada1aeffebfb2
 2013-01-28 12:29:12 -08:00
Pascal Massimino
60904aa629 Merge "allow WebPINewRGB/YUVA to be passed a NULL output buffer." 2013-01-28 04:06:16 -08:00
Pascal Massimino
b7adf37621 allow WebPINewRGB/YUVA to be passed a NULL output buffer. 
If a NULL pre-allocated buffer is passed, a buffer will be automatically
allocated.

+ add some parameter checks.

reported in http://code.google.com/p/webp/issues/detail?id=139

Change-Id: I9e14ed97db30ee12e46b5e92aac7eeaaeb99bfd5
 2013-01-28 00:07:32 -08:00
James Zern
27f8f7420e upsampling_neon.c: fix build 
store values to a temporary variable before calling functions that take
vector types.
removes non-standard constructs such as:
  (uint8x8x2_t){{ a, b }}
fixing:
  src/dsp/upsampling_neon.c:69:32: error: macro "vst2_u8" passed 3
arguments, but takes just 2

Change-Id: Ib4368e16e3a3efac18024f02be94e76243ade2dc
Fixes: https://code.google.com/p/webp/issues/detail?id=140
 2013-01-25 19:42:50 -08:00
James Zern
06b9cdf1e7 gitignore: add IOS related directories 
iosbuild / WebP.framework courtesy of iosbuild.sh

Change-Id: I706fd5fada5fab2528e89d6b09fe93fa44486035
 2013-01-25 18:25:28 -08:00
James Zern
f112221e77 Merge "Fix more comments for iobuild.sh" 2013-01-25 17:52:23 -08:00
Vikas Arora
fe4d25ddad Fix more comments for iobuild.sh 
Change-Id: If97af61a00c0f2dfbd09758c121a9ddd9536b6d1
 2013-01-25 16:07:59 -08:00
pascal massimino
1de3e25271 Merge "NEON optimised yuv to rgb conversion" 2013-01-25 15:51:40 -08:00
Mans Rullgard
090b708a00 NEON optimised yuv to rgb conversion 
- along the lines of the SSE chroma upsampling.
Total speedup is ~30%.

4% speed loss on YuvToRgbXX conversion using tables instead
of 14-bit fixed precision. TODO(later): investigate, and compare
to x86.

see http://code.google.com/p/webp/issues/detail?id=134

Change-Id: Idc2261037cd13b4553ca20ecc4c4007099c37009
 2013-01-25 15:46:40 -08:00
pascal massimino
daa06476e1 Merge "Add ios build script for building iOS library." 2013-01-25 15:26:09 -08:00
Vikas Arora
79fe39e2f2 Add ios build script for building iOS library. 
This build script (iosbuild.sh) will build for following platforms:
iPhoneSimulator, iPhoneOS-V7 & iPhoneOS-V7s

Change-Id: Icbb69e00277a4164f848b8766089302e299506e0
 2013-01-25 10:10:50 -08:00
Pascal Massimino
126c035f3f remove some more -Wshadow warnings 
Change-Id: Icaba088b9a74732137bd35d82854eed858ec88f8
 2013-01-25 00:44:31 -08:00
James Zern
522e9d6108 Merge "cwebp: enable '-metadata'" 2013-01-24 20:04:09 -08:00
James Zern
76ec5fa1b6 cwebp: enable '-metadata' 
This copies metadata selected by -metadata from the input to the output
if present.
Currently there is no WIC support for Windows builds.

Change-Id: I34fb2443729d80ffe3a6da0979d9f6fa9b3fe536
 2013-01-24 19:52:50 -08:00
pascal massimino
aeb91a9d49 Merge "cosmetics: break a few long lines" 2013-01-23 15:05:40 -08:00
James Zern
be7c96b069 cosmetics: break a few long lines 
Change-Id: I785763b974b4e7664ad8e9884251aa2d5274b456
 2013-01-23 14:50:19 -08:00
pascal massimino
cff8ddb61b Merge "add libwebpdecoder.pc" 2013-01-23 14:27:41 -08:00
pascal massimino
93148ab867 Merge "libwebp.pc.in: detab" 2013-01-23 14:25:06 -08:00
pascal massimino
6477f955b6 Merge "Makefile.vc: normalize path separator" 2013-01-23 14:21:36 -08:00
James Zern
bed1ed7c28 add libwebpdecoder.pc 
Change-Id: Ifc47549a9fe206fa174236664345d3ee064849f5
 2013-01-23 13:57:08 -08:00