Commit Graph

14 Commits

Author SHA1 Message Date
Pascal Massimino
7107d54483 further speed-up/cleanup of RecordCoeffs() and GetResidualCost()
(note: Incorporated the cost of bin #1 into the LevelCost[])

Change-Id: I6408b2a822efdb97ad6a3a21d380bc7b0da9c715
2012-01-23 07:01:37 -08:00
Pascal Massimino
fd22104022 Introduce Token buffer (unused for now)
Later, will be useful to collect stats and code bitstream in one single pass

Change-Id: Icf866473958b5eff879e219dbb1d7e350f2268ba
2012-01-23 05:57:12 -08:00
Pascal Massimino
28a9d9b41a speed-up GetResidualCost()
+ misc cosmetics and code polishing

Change-Id: I5830cd2f268d64c072b1cbccc0a4674833875055
2012-01-23 02:36:38 -08:00
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
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
Vikas Arora
885f25bc83 Updated the includes to relative paths.
Change-Id: I0ea1a59dd0f6cb1df9f41e048e0c5a13e7fb8335
2011-12-01 15:30:41 +05:30
Vikas Arora
9523f2a5de Add Alpha Encode support from WebPEncode.
Extend WebP Encode functionality to encode Alpha data and produce
bit-stream (RIFF+VP8X+ALPH+VP8) corresponding to WebP-Alpha.

Change-Id: I983b4cd97be94a86a8e6d03b3b9c728db851bf48
2011-12-01 12:15:58 +05:30
James Zern
c7e86abab6 cosmetics: fix comment line lengths
add additional '-' to //----... style comments globally instead of
polluting further commits

Change-Id: I951acc68b7b5384b4d6e235349b0067d1aa6fa8b
2011-08-26 12:19:33 -07:00
Pascal Massimino
998754a734 remove unused nb_i4_ and nb_i16_ fields.
Change-Id: Idf361e5528bddb3b25f3bc12502fdfd5c4cf9149
2011-07-15 14:57:07 -07:00
Pascal Massimino
c915fb2aa7 encoder speed-up: hardcode special level values
1-3% faster

Change-Id: Ib2131989fbf819bcbfa6456adbeea0ba27c914f7
2011-07-12 18:21:22 -07:00
Pascal Massimino
fc0a02e55d fix the dichotomy loop
we were reading past the end of the dqs[] array.

reported by Mathias Schindler (on cygwin only)
http://code.google.com/p/webp/issues/detail?id=71

Change-Id: Ib38c4c139e3cac3e8915626d63e16b403d6bbd63
2011-05-05 16:35:12 -07:00
Pascal Massimino
6d0e66c23e prepare experimentation with yuv444 / 422
+ add a simple rescaling function: WebPPictureRescale() for encoding
+ clean-up the memory managment around the alpha plane
+ fix some includes path by using "../webp/xxx.h" instead of "webp/xxx.h"

New flags for 'cwebp':
 -resize <width> <height>
 -444  (no effect)
 -422  (no effect)
 -400

Change-Id: I25a95f901493f939c2dd789e658493b83bd1abfa
2011-05-04 15:41:08 -07:00
Pascal Massimino
f61d14aabf a WebP encoder
converts PNG & JPEG to WebP

This is an experimental early version, with lot of room
of later optimizations in both speed and quality.

Compile with the usual `./configure && make`
Command line example is examples/cwebp

Usage:

   cwebp [options] -q quality input.png -o output.webp

where 'quality' is between 0 (poor) to 100 (very good).
Typical value is around 80.

More encoding options with 'cwebp -longhelp'

Change-Id: I577a94f6f622a0c44bdfa9daf1086ace89d45539
2011-02-18 23:54:59 -08:00