Commit Graph

97 Commits

Author SHA1 Message Date
Pascal Massimino
ca554137d2 fix WebPIDecGetRGB() to accept any RGB(A) mode, not just MODE_RGB
Change-Id: I8780582ecd0868c84e2b1310addebd6c8989e727
2011-04-20 08:42:08 -07:00
Pascal Massimino
8aa50efd38 fix some 'man' typos 2011-04-18 18:50:34 -07:00
Pascal Massimino
d3f3bdda7f update ChangeLog
Change-Id: Ib5df31d998cbaf561f6bb14d634d9ce0e82c30d3
2011-04-01 00:51:29 -07:00
Pascal Massimino
d7e9a69c52 update contributor list
Change-Id: I3d8eb613e569787256b16b3185823a6a0531d1a3
2011-03-29 10:49:22 -07:00
Pascal Massimino
261abb8e24 add a 'superclean' section
wipes out everything that is not needed.
Used to create the tgz archives.

Change-Id: Icbb00edb0e3a77abd0de6135c39a11d6973f9cd3
2011-03-29 10:46:36 -07:00
Pascal Massimino
276ae82512 Remove files not mean to be in git, and update .gitignore
Makes things lighter at the expense of requiring the user
to be up-to-date for autotools.

patch by Jan Engelhardt (jengelh at medozas dot de)

Change-Id: Icfcab2d899828a213d9fade0dab350dacd0c070a
2011-03-29 09:07:06 -07:00
Jan Engelhardt
2486845580 build: prepare libwebp.pc
libwebp.pc needs to be created from libwebp.pc.in, or installation
will fail.

Change-Id: If0afe8d5c722b3394778b309dc0b676e603a4282
2011-03-28 11:38:47 -07:00
Pascal Massimino
14ceb6e803 add "-version" description to man pages
Change-Id: I699899b11db3b62628c9438f07c379d2ae413031
2011-03-28 11:12:39 -07:00
Pascal Massimino
b247a3b279 Create the m4 directory, and also place .gitignore in there for libtool.
patch by Jan Engelhardt (jengelh at medozas dot de)

Fixes the error:
aclocal: couldn't open directory "m4": No such file or directory
autoreconf: aclocal failed with exit status: 1

Change-Id: I1c1cd2c3d96f0d7d25616ec084dfc9bf9077fd4f
2011-03-28 07:09:35 -07:00
Pascal Massimino
cdd734c9e3 Resolve automake warnings
patch by Jan Engelhardt (jengelh at medozas dot de)

fixes http://code.google.com/p/webp/issues/detail?id=60

Change-Id: Ifd07974e89bdc18da4c2f4667a9cae9f6c07e649
2011-03-26 10:25:21 -07:00
Pascal Massimino
c5fa726e18 build: add pkgconfig files
patch by Jan Engelhardt (jengelh at medozas dot de)

fixes http://code.google.com/p/webp/issues/detail?id=64

Change-Id: I5b3bc9b88af967e48b949d9c85daacda45693b1f
2011-03-26 10:15:44 -07:00
Pascal Massimino
b20aaca285 build: just use autoreconf, avoid calling tools manually
patch by Jan Engelhardt (jengelh at medozas dot de)

fixes http://code.google.com/p/webp/issues/detail?id=59

Change-Id: I3fbb9124ce0b430b6340b3df5496e75cc5a9fedc
2011-03-26 09:50:31 -07:00
Pascal Massimino
4b0b0d66cc cwebp: use modern functions
patch by Jan Engelhardt (jengelh at medozas dot de)

Change-Id: I0e1766469fc4bc229488018b30416e3359c43012
2011-03-26 09:27:45 -07:00
Pascal Massimino
efbc6c41fc update Android.mk
idec.c was missing

Change-Id: I18fe8eb6576c52b56519567b9905ad5ac2db60c0
2011-03-26 07:33:19 -07:00
Pascal Massimino
7777570b9a better version of ChangeLog
(not including this Change, heh!)

+ fix NEWS's dates

Change-Id: I2bf6230a33d2a1606986432c53294240bac2dd2c
2011-03-25 18:15:34 -07:00
Pascal Massimino
fa70d2b771 update version number in the DOC
Change-Id: I791be1c6678fa4bd2f0f330cd53aa5837dedbebf
2011-03-25 16:54:47 -07:00
Pascal Massimino
f8db5d5d1c more C89-fixes
going down to strict -ansi c89 is quite overkill (no 'inline',
and /* */-style comments).
But with these fixes, the code compiles with the stringent flags:
 -Wextra -Wold-style-definition -Wmissing-prototypes
 -Wmissing-declarations and -Wdeclaration-after-statement

Change-Id: I36222f8f505bcba3d9d1309ad98b5ccb04ec17e3
2011-03-25 15:19:37 -07:00
Pascal Massimino
0de013b3a4 fix typos
Change-Id: Ib83202e639a16d569ce21e7d057fe83817479d61
2011-03-24 16:32:29 -07:00
Pascal Massimino
650ffa3bbb add version getters for decoder and encoder
WebPGetDecoderVersion() and WebPGetEncoderVersion()
will not return 0.1.2 encoded as 0x000102

dwebp and cwebp also have a new "-version" flag

Change-Id: I4fb4b5a8fc4e53681a386ff4b74fffb639fa237a
2011-03-24 16:17:10 -07:00
Pascal Massimino
be4867d2f8 doc for incremental decoding
Change-Id: Idff912525b38aaed22113557a50abcb8422a9ab5
2011-03-24 15:50:02 -07:00
Pascal Massimino
56732a1b4d add idec.obj in MSVC makefile
Change-Id: I5064805991cdb811bc230cd184276bdd3abf017e
2011-03-24 06:38:39 -07:00
Pascal Massimino
208afb5ea1 add c++ guards
Change-Id: I0d4fa090e88499e2e3f1571b149666bde3304cda
2011-03-23 18:41:18 -07:00
Pascal Massimino
8bf76fe0c8 add incremental decoding
The object WebPIDecoder is available to store the
decoding state. The flow is typically:

   WebPIDecoder* const idec = WebPINew(mode);
   while (has_more_data) {
     // ... (get additional data)
     status = WebPIAppend(idec, new_data, new_data_size);
     if (status != VP8_STATUS_SUSPENDED ||
       break;
     }

     // The above call decodes the current available buffer.
     // Part of the image can now be refreshed by calling to
     // WebPIDecGetRGB()/WebPIDecGetYUV() etc.
   }
   WebPIDelete(idec);

Doing so, one can try and decode new macroblocks everytime fresh
bytes are available.
There's two operating modes: either appending fresh bytes, or
updating the whole buffer with additional data in the end.
The latter requires less memcpy()'s

main patch by Somnath Banerjee (somnath at google.com)

Change-Id: Ie81cbd0b50f175743af06b1f964de838b9a10a4a
2011-03-23 18:33:26 -07:00
Pascal Massimino
1f28832834 'inline' isn't defined in strict ansi c89
=> don't use it if ANSI is define

Change-Id: Iebd7df224ff7f0e4bfddd3b2f17c1133e57c346f
2011-03-23 17:42:48 -07:00
Pascal Massimino
8b77c63262 move the quantization function to dsp.c
and add a function pointer for it

Change-Id: Ic7012e35c74a474bf140bb23cdaf9d6950026bc6
2011-03-23 17:41:00 -07:00
Pascal Massimino
b2c3575c8f add a 'last_y' field to WebPDecParams
this allows to keep an exact track of the last displayable pixel row

Change-Id: I590306735a82b9249e7bc9fe64eeb3e5bea3376b
2011-03-23 17:24:31 -07:00
Pascal Massimino
2654c3dadc correctly pass along the exact same status returned from ParsePartitions
Change-Id: I5e4ff98dd548b6dceaf36675faa988efb1f47b77
2011-03-23 17:22:07 -07:00
Pascal Massimino
4704146a1f add missing precision in the man
Change-Id: I55ae0547abf742b4620d9faae7fe5163d8459c19
2011-03-23 17:13:54 -07:00
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