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Author SHA1 Message Date
Pascal Massimino
6d978a6c8c add error messages 
patch by Christian Duvivier

Change-Id: Iaea71f690b99e313561d0284759531b81c10d7e5
 2011-03-17 14:53:57 -07:00
Pascal Massimino
6463e6ab94 add some install instructions, and fix intel-mac flags 
patch by Christian Duvivier

Change-Id: I8e38f98c6738c3d89917cd3eb88f6c095335a428
 2011-03-17 14:45:23 -07:00
pascal massimino
05fb7bfc2b Merge ".gitignore: initial version" 2011-03-16 13:49:43 -07:00
James Zern
c33f0195aa .gitignore: initial version 
Change-Id: Id6f5ee35e3d2374316e616e464379365669a7b8f
 2011-03-16 10:33:26 -07:00
James Zern
e532b9abb1 Makefile: allow out of tree builds 
use top_srcdir rather than top_builddir for AM_CPPFLAGS
add EXTRA_DIST to man Makefile. fixes distcheck target.

Change-Id: I308dc1c98f096de1efe188f63d040ef953598e78
 2011-03-15 15:31:25 -07:00
Pascal Massimino
4c0da7aad5 enable sparse dc/ac transforms 
non-zero dc-bit was mixed with non-zero ac-bit, preventing
finer optimization during VP8ReconstructBlock.
Depending on sparsity, i see 2-5% gain on average.

Change-Id: I7f34f18d0701c77837de3540b732e5b7d85d7c5d
 2011-03-14 12:33:50 -07:00
Pascal Massimino
07dbb8d5af clarify the return logic 
Change-Id: I2b5b239496da6545df2deede6d0ca28a2f9d46bf
 2011-03-14 10:29:02 -07:00
Pascal Massimino
5c69e1bb4d fix bigger-by-1 array 
and use enums for that.
props to Nigel Tao (at google dot com) for the fix

Change-Id: I68194cb510760dd82a2ae83359154bf622502991
 2011-03-13 22:43:35 -07:00
Pascal Massimino
7c5267e36e fix a (harmless) typo: non_zero_ -> non_zero_ac_ 
props to Nigel Tao (at google dot com) for spotting it!

Change-Id: I113d714242e98edf02328a1898eb235899c07601
 2011-03-13 20:36:43 -07:00
Pascal Massimino
bc75213572 fix missing free() 
Change-Id: Ia09869321e00bb3fb8e92e5d91993ff583dc6cdf
 2011-03-13 00:22:57 -08:00
Pascal Massimino
af3e2aaa04 remove trailing spaces 
Change-Id: Ic92addd7c152e0216d5c9a35f5661914a5671f03
 2011-03-10 15:57:18 -08:00
Pascal Massimino
13e50da6f8 make the bitreader preload at least 8bits, instead of post-load them 
(this makes initialization easier and will be helpful for incremental
decoding).
Modify ParsePartitions() to accommodate for truncated input.

Change-Id: I62f52078d6b7a2314a11880a20d9eac5b4714bd0
 2011-03-10 15:05:59 -08:00
Pascal Massimino
f4888f7702 emit 9 - nb_bits trailing zeros instead of 8 
Change-Id: I3bd3eb8dac5bcc9fb0d41612ec610ca2046e8c7b
 2011-03-10 14:57:38 -08:00
Pascal Massimino
3db6525574 separate block-parsing into a visible VP8DecodeMB() 
This is to prepare for incremental decoding.

Change-Id: Ifc7e2df3e18eb56af3752cba8dfe08d370036d7f
 2011-03-09 21:29:36 -08:00
Pascal Massimino
a871de0255 add missing extern "C" 
Change-Id: Ie325dbbb1c1f0f55a3f207a32c67139f59c03bf2
 2011-03-09 21:25:53 -08:00
Pascal Massimino
b3ce8c522a remove a gcc warning about type pun by using a proper union'd type 
Change-Id: Ie2dd4aa696318daa84b90de009218311153c0613
 2011-03-09 07:18:51 -08:00
Pascal Massimino
e1863715bf update after addition of webpi.h 
Change-Id: I747bb0e6ba89ab6733d85ed688db2c608f7e6973
 2011-03-09 07:03:40 -08:00
Pascal Massimino
3e856e2dd6 Extract some useful functions around decoding buffer WebPDecParams. 
This is to prepare for incremental decoding.

Change-Id: Ibb1ac6c1f2d10e096c4fbcf0c06bce77b30ca457
 2011-03-08 19:23:16 -08:00
Pascal Massimino
d5bc05a47b make the filtering process match libvpx and ffvp8 
libvpx (and ffvp8) implementations are completely skipping the deblocking
step if loop_filter_level is 0, which is _not_ equivalent to performing
the loop-filtering with a 0 value for loop_filter_level. In the latter case
(which we followed), few pixels were modified here and there and you could
observe off-by-1 errors on few places.

This patch will reconcile the 3 implementations (since the difference
is minor, skipping the deblocking step will save CPU for virtually
no visible difference).

The spec will be made clearer about the expected behaviour:
* if the global loop_filter_level is 0, turn deblocking off.
* if it's not 0 but the local loop_filter_level ends up being 0 for whatever
reason (lf_delta, mode delta, ref delta, etc.) on a particular
macroblock, skip the deblocking too.

Change-Id: I157f1f8de463b8a76caddb3f347b7fbc7bd527d2
 2011-03-08 18:47:08 -08:00
Pascal Massimino
dd60138d20 add man pages for cwebp(1) and dwebp(1) 
Change-Id: I450717fc82fff19f16df75aca6a9a567773afd00
 2011-03-01 16:07:57 -08:00
Pascal Massimino
c4fa36448b fix header 
Change-Id: I982868e480434d19e2870780100b1df83df0800a
 2011-02-27 21:51:10 -08:00
Pascal Massimino
5b70b378bd * add an option to bypass_filtering in VP8Io. 
This will make the decoder skip the filtering process if needed,
resulting in speed-up, but also non-compliant (blocky?) output
+ Add a versioning check for VP8InitIo(), since we've adding a field to VP8Io
+ add some more error checks while at it

Change-Id: I4e9899edc24ecf8600cbb27aa4038490b7b2cef3
 2011-02-27 10:55:33 -08:00
Pascal Massimino
b97a4003c0 simplify QuantizeBlock code a bit 
Change-Id: I1130859756fa88e88957781f60a3701be354e2a3
 2011-02-27 10:46:28 -08:00
Pascal Massimino
84b58ebba3 add more checks around picture allocation 
covers overflow corner cases for 32/64bit platforms.

Change-Id: I0c9169264c33a4e9d0bbfdb026fb0d82c7e56de8
 2011-02-27 10:31:20 -08:00
Pascal Massimino
b65a3e101e remove absolute_delta_ field and syntax code 
we'll always encode using absolute value, not relative ones.
    Both methods use the same number of bits, so we'll go for the
    simpler and most robust one.
    + add some extra checks about pic->u/v being NULL.

Change-Id: I98ea01a1a6b133ab3c816c0fbc50e18269bd2098
 2011-02-27 10:27:07 -08:00
Pascal Massimino
0744e8420e Dont' open output file until we're sure the input file is valid 
fixes http://code.google.com/p/webp/issues/detail?id=48

Change-Id: I9ce2e500623380ba71ae0e2c8faf80db4568ae50
 2011-02-25 12:03:27 -08:00
Pascal Massimino
d5bd54c712 fix typo and buggy line 
Change-Id: I744bcfe5e611a49af9ad8a00ba764b74ee8dd727
 2011-02-20 11:57:49 -08:00
Pascal Massimino
f7a9549dcb Add a simple top-level makefile.unix for quick & easy build. 
Just use:
  make -f makefile.unix
instead of the autoconf system.

Change-Id: Idcedfd22e543023d1731f5753fb4958f02d0dd75
 2011-02-20 11:17:44 -08:00
Pascal Massimino
5f36b94403 update the doc for the -f option 
Change-Id: I0ae23bf755b516f0149539ac849e20c15fa26209
 2011-02-19 09:34:48 -08:00
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
Pascal Massimino
81c966215b oops: forgotten call to Initialize() 
+ move the error message to a more useful place

Change-Id: Id03a992491f907f278fcaad11e94f70f1baccd5f
 2011-02-18 10:26:42 -08:00
Pascal Massimino
87ffa005de typo: fix a missing 'R', was confusing. 
Change-Id: I769ded6058f6c7eabc97fc7a772bc44a42cd826e
 2011-02-17 09:59:34 -08:00
Pascal Massimino
b04b857a35 * add decoding measurement using stopwatch.h (use -v option) 
* support PNG output through WIC on Win32

Change-Id: I1dbcc6ab1360010aca25da80f30a74781aadc76d
 2011-02-16 15:01:27 -08:00
Pascal Massimino
746a4820b9 * make (*put)() hook return a bool for abort request. 
* add an enum for VP8Status() to make things clearer

Change-Id: I458aeabab93f95d28e8ee10be699b677c04b4acb
 2011-02-16 14:33:16 -08:00
Pascal Massimino
73c973e6da * strengthen riff/chunk size checks 
* don't consider odd-sized chunks being an error

Change-Id: I2901b071232bb996680cf155e1a25a6a9388f222
 2011-02-16 13:24:55 -08:00
Pascal Massimino
1dc4611a3a add support for PNG output (default) 
regularize include guards

Change-Id: Ia1d0fa49c8c98e2c11f775b839d04a24e5450170
 2011-01-31 22:25:44 -08:00
Pascal Massimino
860641df3f fix a typo: sizeof(kYModeProbaInter0) => sizeof(kUVModeProbaInter0) 
report by mr dot gnu do jr at gmail dot org.

Change-Id: Iccd701ab1ec613a019f216e5cb37a18e5adfb4cf
 2011-01-31 21:12:19 -08:00
Pascal Massimino
3254fc5259 fix some petty constness 
fix the ./configure file too

Change-Id: I96cfc84e08e9bab517dec24c92f856efa5ad04ca
 2011-01-23 12:59:06 -08:00
Pascal Massimino
504d33937c fix eof_ mis-initialization 
For very very short partitions, the initial GetByte() could
set eof_ to 1, whereas some bits were available but unread yet.
So we set eof_ to 0 last.

Change-Id: Ic6b68271bc72efa4de4e64e1f57307d1d8fb613c
 2011-01-17 00:25:18 -08:00
Pascal Massimino
2bc0778f85 leftover Makefile.* from previous commit 
Change-Id: If89dde15cd3f4a27ad95401a66f27fd5e079c5da
 2011-01-08 07:16:20 -08:00
Pascal Massimino
d2cf04e48e move Makefile.am one level below, to src/dec 
fix typos here and there
dwebp is now an installed program

autotools = lot of fun :)

Change-Id: Idd12a944dd8d6614e393122c4378e1f7ecf0e209
 2011-01-07 18:16:04 -08:00
Pascal Massimino
ade92de8e0 typo: vp8.h -> decode_vp8.h 
Change-Id: I860183182b5e531d38f10b81769c3e5911880b0b
 2011-01-07 11:45:29 -08:00
Pascal Massimino
d7241241d1 forgot to declare types.h to be installed 
Change-Id: I5edab197829e0148cbabd4a6dfe9e56279204fc6
 2011-01-06 19:44:43 -08:00
Pascal Massimino
6421a7a4fb move the decoder sourcetree to a sub-location src/dec 
to make room for future libs sources

also extract the types declaration into its own types.h file

Change-Id: I8bae8a323a479a29375cf509792228ae6af51c7a
 2011-01-06 08:57:14 -08:00
Pascal Massimino
a9b3eab6fd correct layout name is IMC4. 
U-plane comes first, then V-plane.
see http://www.fourcc.org/yuv.php#IMC4

Change-Id: I65222176ca4d8f3b1e072783becd769dd4dd2f55
 2011-01-03 11:05:13 -08:00
Pascal Massimino
2330522cff handle corner case of zero-dimensions 
Change-Id: I943a335b92b5ee6c2980c2ba9d4092f0b79f9a6b
 2010-12-20 12:09:07 -08:00
Pascal Massimino
280c36583f make VP8Init() handle short buffers (< 2 bytes) correctly 
Change-Id: Ie354a97f0dc44d95bd5fad92851a76cfdedae3de
 2010-12-20 05:50:16 -08:00
Pascal Massimino
b1c9e8b48c handle error cases more robustly 
Change-Id: I252fd9596d10db26026b8c577ad7f29ffd373f4c
 2010-12-20 05:28:57 -08:00
Pascal Massimino
0e94935ca9 Merge "table-less version of clip_8b()" 2010-12-17 11:10:00 -08:00
Pascal Massimino
1e0a2d25f6 table-less version of clip_8b() 
added some dynamic range analysis too.

Change-Id: I76804adbfceccd83639c5821b4f0f5b9e7d6c82c
 2010-12-17 05:56:37 -08:00