Commit Graph

1350 Commits

Author SHA1 Message Date
James Zern
850e956f9b README: update swig notes
add python, required version notes

Change-Id: Iec2e94075f6cf54455ce5a658f9b7258109f4d01
(cherry picked from commit 4a7627c215)
2013-06-11 15:03:21 -07:00
James Zern
bddd9b0a93 swig/python: add minimal documentation
uses autodoc to display the function arguments rather than the
inscrutable va_args (*args).

Change-Id: Iec2ff8276c1533b14c3032836d822fbdae632521
(cherry picked from commit 825b64db53)
2013-06-11 15:00:48 -07:00
James Zern
d573a8d53f swig: add python encode support
wraps the simple interface similar to java.

Change-Id: Ib922bbcae322b2345b6dce5dee08faad705a77fd
(cherry picked from commit 14677e11d4)
2013-06-11 15:00:47 -07:00
James Zern
6b931875ac swig/java: reduce wrapper function code duplication
define a macro to emit the wrapper code

Change-Id: I672416016162d6d9ce6f455d224044e0837e3ace
(cherry picked from commit a5c297c842)
2013-06-11 15:00:47 -07:00
James Zern
6fe536f4ba swig/java: rework uint8_t typemap
reuse the declarations from arrays_java.i for signed char to make an
explicit uint8_t mapping. this avoids sign conversion build warnings.

Change-Id: Icfb5b865cf1fd404e89f2cd889111f0a94e3c604
(cherry picked from commit ad4a367dba)
2013-06-11 15:00:47 -07:00
skal
a2ea46439e Fix the bug in ApplyPalette.
The auto-infer logic of detecting the 'Alpha' use case
(via check '(palette[i] & 0x00ff00ffu) != 0' is failing
for this corner case image with all black pixels (rgb = 0)
and different Alpha values.

-> switch generic use-LUT detection

Change-Id: I982a8b28c8bcc43e3dc68ac358f978a4bcc14c36
(cherry picked from commit afa3450c11)
2013-06-11 15:00:47 -07:00
James Zern
7bb28d2a55 webp/lossless: fix big endian BGRA output
Change-Id: I3d4b3d21f561cb526dbe7697a31ea847d3e8b2c1
(cherry picked from commit 2ca83968ae)
2013-06-11 15:00:47 -07:00
Vikas Arora
f036d4bfa6 Speed up ApplyPalette for ARGB pixels.
Added 1 pixel cache for palette colors for faster lookup.
This will speedup images that require ApplyPalette by 6.5% for lossless
compression.

Change-Id: Id0c5174d797ffabdb09905c2ba76e60601b686f8
(cherry picked from commit 742110ccce)
2013-06-11 15:00:46 -07:00
skal
8112c8cf54 remove some warnings:
* "declaration of ‘index’ shadows a global declaration [-Wshadow]"
* "signed and unsigned type in conditional expression [-Wsign-compare]"

Change-Id: I891182d919b18b6c84048486e0385027bd93b57d
(cherry picked from commit 87a4fca25f)
2013-06-11 15:00:46 -07:00
Urvang Joshi
cc128e0bfc Further reduce memory to decode lossy+alpha images
Earlier such images were using roughly 9 * width * height bytes for
decoding. Now, they take 6 * width * height memory.

Change-Id: Ie4a681ca5074d96d64f30b2597fafdca648dd8f7
(cherry picked from commit 64c844863a)
2013-06-11 15:00:46 -07:00
Pascal Massimino
07db70d20f fix for big-endian
(Issue #150: https://code.google.com/p/webp/issues/detail?id=150)

Change-Id: Iad46d375a8c5eabae37cde8f55b3e7448601f264
(cherry picked from commit 4437061735)
2013-06-11 15:00:46 -07:00
Urvang Joshi
eda8a7dec5 gif2webp: Fix signed/unsigned comparison mismatch
Change-Id: I355f0614424276550db71b24e5bb1948e5c6894c
(cherry picked from commit 043e1ae4bd)
2013-06-11 15:00:46 -07:00
James Zern
31f346fe0c Makefile.vc: fix libwebpdemux dll variable typo
Fixes issue #149

Patch by: Jason Stevens  (cypher497 at gmail dot com)

Change-Id: I65cceaad37d22b96e5e92cb78f859fc0b7c38b67
(cherry picked from commit 3eeedae1bc)
2013-06-11 15:00:45 -07:00
James Zern
6c76d28e4b swig: add python (decode) support
similar to Java, simple interface only

Change-Id: I8a3d344e5d89f73627e4e0cb2067512260d46fdd
(cherry picked from commit f980faf417)
2013-06-11 15:00:45 -07:00
James Zern
b4f5bb6ca3 swig: cosmetics
normalize formatting
- update decode prototypes
- match project function name style

Change-Id: Ib481b5602171b72dbb1a5d462e6d5166e9b8566e
(cherry picked from commit 7f5f42bb36)
2013-06-11 15:00:45 -07:00
Vikas Arora
498d4dd634 WebP-Lossless encoding improvements.
Lossy (with Alpha) image compression gets 2.3X speedup.
Compressing lossless images is 20%-40% faster now.

Change-Id: I41f0225838b48ae5c60b1effd1b0de72fecb3ae6
(cherry picked from commit 8eae188a62)
2013-06-11 15:00:45 -07:00
James Zern
26e7244221 swig: ifdef some Java specific code
no implementation change

Change-Id: I077c707e1f6293188e6fa11ba24757009a709f77
(cherry picked from commit c7247c4c68)
2013-06-11 15:00:45 -07:00
James Zern
8ecec68652 configure: add warning related flags
adds TEST_AND_ADD_CFLAGS function
uses AM_CFLAGS to allow CFLAGS override

Change-Id: I9352aec6e5d905a41d832bf5ad0c8dcd154f7e97
(cherry picked from commit bba4c2b2a6)
2013-06-11 15:00:44 -07:00
James Zern
e676b04309 configure: add GLUT detection; build vwebp
Change-Id: I7f0964db2d04c22ff9ec274e8cd1cbed7379a165
(cherry picked from commit 0e513f7ae3)
2013-06-11 15:00:44 -07:00
Urvang Joshi
b0ffc43700 Alpha decoding: significantly reduce memory usage
Simply get rid of an intermediate buffer of size width x height, by
using the fact that stride == width in this case.

Change-Id: I92376a2561a3beb6e723e8bcf7340c7f348e02c2
(cherry picked from commit edccd19436)
2013-06-11 15:00:44 -07:00
James Zern
20aa7a8dd5 configure: add --enable-everything
Change-Id: Ie1b3abd42459de7f789fe985759c465c2a196727
(cherry picked from commit 3cafcc9a8d)
2013-06-11 15:00:44 -07:00
James Zern
b8307cc08b configure.ac: add some helper macros
library check related variable maintenance -> *_INCLUDES / *_LIBS

CLEAR_LIBVARS / LIBCHECK_PROLOGUE / LIBCHECK_EPILOGUE

Change-Id: I72e292dc1f69b02f69a26639308f247db0471e2b
(cherry picked from commit 4ef1447792)
2013-06-11 15:00:44 -07:00
Pascal Massimino
980e7ae951 Remove the gcc compilation comments
They went out of sync some time ago, and are
no longer really required since we have them
buildable from makefile.unix

Change-Id: Ica2dcf5c55f44365598f832f55204d123d7aa601
(cherry picked from commit a4e1cdbbe8)
2013-06-11 15:00:44 -07:00
Urvang Joshi
7f25ff99fd gif2webp: Fix ICC and XMP support
Change-Id: Ib5aafef388bd191610e4cc2f8180f35cd454f1d3
(cherry picked from commit b26e5ad540)
2013-06-11 15:00:43 -07:00
Christian Duvivier
d8e5321144 Add missing name to AUTHORS
Change-Id: I00092e5bb676b48abc05b94080b589b48c911c82
(cherry picked from commit 46089b207d)
2013-06-11 15:00:43 -07:00
Urvang Joshi
11edf5e24b Demux: Fix a potential memleak
Change-Id: Ic0dcac010da088b791c130be4abacdd8c31e92cf
(cherry picked from commit 94328d6457)
2013-06-11 15:00:43 -07:00
James Zern
c7b92184df don't forward declare enums
doing so is not part of ISO C; removes some pedantic warnings

Change-Id: I739ad8c5cacc133e2546e9f45c0db9d92fb93d7e
(cherry picked from commit 96e948d7b0)
2013-06-11 15:00:43 -07:00
James Zern
7a650c6ad6 prevent signed int overflow in left shift ops
force unsigned when shifting by 24.

Change-Id: Ie229d252e2e4078107cd705b09397e686a321ffd
(cherry picked from commit f4f90880a8)
2013-06-11 15:00:43 -07:00
Pascal Massimino
31bea32408 add precision about dynamic output reallocation with IDecoder
The output surface CAN be changed inbetween calls to
WebPIUpdate() or WebPIAppend(), but with precautions.

Change-Id: I899afbd95738a6a8e0e7000f8daef3e74c99ddd8
(cherry picked from commit ff885bfe1f)
2013-06-11 15:00:43 -07:00
Urvang Joshi
c22877f70f Add incremental support for extended format files
This applies to images with optional chunks (e.g. images with ALPH
chunk,
ICCP chunk etc). Before this, the incremental decoding used to work like
non-incremental decoding for such files, that is, no rows were decoded
until
all data was available.

The change is in 2 parts:
- During optional chunk parsing, don't wait for the full VP8/VP8L chunk.
- Remap 'alpha_data' pointer whenever a new buffer is allocated/used in
WebPIAppend() and WebPIUpdate().

Change-Id: I6cfd6ca1f334b9c6610fcbf662cd85fa494f2a91
(cherry picked from commit ead4d47859)
2013-06-11 15:00:42 -07:00
James Zern
5051245f3a Makefile.vc: have 'all' target build everything
default is still the core examples as makefile.unix

Change-Id: Ica3fe6123f4359aefa130b39d2b0739b65e34c0b
(cherry picked from commit 69d0f92658)
2013-06-11 15:00:42 -07:00
James Zern
8191decae9 Makefile.vc: flags cleanup
- drop some unnecessary link flags
- use lib.exe directly for creating libraries
- factorize /nologo and use it consistently

Change-Id: Ie76119bc051e9bc53e4d6bba1a0a3f124f9062fc
(cherry picked from commit 52967498b3)
2013-06-11 15:00:42 -07:00
James Zern
b9d747351a Makefile.vc: drop /FD flag
breaks under wine; from MSDN:
/FD is only used by the development environment, and it should not be
used from the command line or a build script.

Change-Id: I180c9813e721b163cc645b9b7f14fe36556019d3
(cherry picked from commit c61baf0c10)
2013-06-11 15:00:42 -07:00
James Zern
5568dbcfe6 update gitignore
*.a, new examples and new automake-1.12 file (ar-lib)

Change-Id: I28d7bc59a2977a7c5959940936e3d13a71dd149c
(cherry picked from commit 3a15125d2f)
2013-06-11 15:00:42 -07:00
Urvang Joshi
f4c7b6547b WebPEncode: An additional check.
Start VP8EncLoop/VP8EncTokenLoop only if VP8EncStartAlpha succeeded.

Change-Id: Id1faca3e6def88102329ae2b4974bd4d6d4c4a7a
(cherry picked from commit 67708d6701)
2013-06-11 15:00:42 -07:00
Urvang Joshi
1fb04bec99 pngdec: Avoid a double-free.
Earlier, at line#275, if ok == 0, it would have triggered a double free
of 'rgb'.

Change-Id: Iaee1f35824a66f6e4b488e523416f73b87c5ec30
(cherry picked from commit b68912af2c)
2013-06-11 15:00:42 -07:00
Pascal Massimino
dcbb1ca54a add WebPBlendAlpha() function to blend colors against background
new option: -blend_alpha 0xrrggbb
also: don't force picture.use_argb value for lossless. Instead,
delay the YUVA<->ARGB conversion till WebPEncode() is called.
This make the blending more accurate when source is ARGB
and lossy compression is used (YUVA).
This has an effect on cropping/rescaling. E.g. for PNG, these
are now done in ARGB colorspace instead of YUV when lossy compression
is used.

Change-Id: I18571f1b1179881737a8dbd23ad0aa8cddae3c6b
(cherry picked from commit e7d9548c9b)
2013-06-11 15:00:41 -07:00
James Zern
bc9f5fbe0f configure.ac: add AM_PROG_AR for automake >= 1.12
fixes:
automake-1.12/am/ltlibrary.am: warning: 'libwebp.la': linking libtool libraries using a non-POSIX
automake-1.12/am/ltlibrary.am: archiver requires 'AM_PROG_AR' in 'configure.ac'

Change-Id: I223f93e5f075aaf23cfefceef55e2ab8eeb34ccd
(cherry picked from commit ed4dc71769)
2013-06-11 15:00:41 -07:00
James Zern
1e0d4b8c8b Update ChangeLog
Change-Id: I381ab93458df3d1851aec36161cc4b2cbd1265be
2013-03-29 15:55:16 -07:00
Urvang Joshi
d52b405dbd Cosmetic fixes
Change-Id: Ia878115086edc3fdfee3f0ca76e5e74ea5906f21
(cherry picked from commit e9a7990bc5)
2013-03-29 15:49:15 -07:00
Pascal Massimino
6cb4a61825 misc style fix
(cherry picked from commit 142c46291e)

Conflicts:
	src/webp/format_constants.h

Change-Id: Ib764cb09bd78ab6e72c60f495d55b752ad4dbe4d
2013-03-29 15:49:05 -07:00
Pascal Massimino
68111ab02f add missing YUVA->ARGB automatic conversion in WebPEncode()
user can now call WebPEncode() with any YUVA or ARGB format, for
lossy or lossless compression

also: simplified error reporting, which is done in WebPPictureARGBToYUVA()
and WebPPictureYUVAToARGB()

Change-Id: Ifb68909217175bcf5a050e5c68d06de9849468f7
(cherry picked from commit 07d87bda1b)
2013-03-29 15:33:14 -07:00
Urvang Joshi
403bfe820c Container spec: Clarify frame disposal
- Add a note that disposal only applies to the frame rectangle
- Add the formula for alpha-blending.
- Note that alpha-blending would occur for the common rectangle
- Also note the case when both color profile and disposal are
present.

Change-Id: I214787dd64453edf3b0cdaff3951015281a32ee4
2013-03-29 11:42:17 -07:00
James Zern
3e7a13a008 Merge "Container spec: clarify the background color field" into 0.3.0 2013-03-26 17:38:07 -07:00
James Zern
14af77452b container doc: add a note about the 'ANMF' payload
this consists of padded chunks, so ANMF should require none

Change-Id: I5dff623b56d8a466dc9be03ee87d1d2d19efc088
2013-03-26 17:25:27 -07:00
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