Commit Graph

1817 Commits

Author SHA1 Message Date
Pascal Massimino
0bcf5ce39a Merge "remove a malloc() in case we're using only FILTER_NONE for alpha" 2013-06-24 12:55:40 -07:00
Pascal Massimino
2c07143b9d remove a malloc() in case we're using only FILTER_NONE for alpha
+ some revamp and cleanup of the alpha-filter trial loop
+ EncodeAlphaInternal() now just takes a FilterTrial param

Change-Id: Ief84385083b1cba02678bbcd3dbf707245ee962f
2013-06-24 02:07:52 -07:00
skal
a4d5f59d9e Faster lossless decoding
Specialize and simplify the alpha-decoding case, which is used when:
 - no color-cache is use
 - all red/blue/alpha values are the same (and hence their Huffman tree has
 only 1 symbol. We don't need to consume any bits for reading these).

 + revamped the loop to use size_t and offsets instead of pointers.

 ~2-3% faster on Unix (gcc) but up to 25% faster lossy+alpha decoding
 on Mac (llvm) and ARM.

Change-Id: I43c9688d1e4811cab0ecf0108a5b8f45781083e6
2013-06-24 09:34:30 +02:00
skal
fd53bb758e Merge "alternate LUT-base reverse-bits code" 2013-06-24 00:32:39 -07:00
pascal massimino
d1c166ef3f Merge "Container spec: a clarification on background color." 2013-06-21 00:53:12 -07:00
Urvang Joshi
fdb9177917 Rename a method
Change-Id: Idc5f4ea1019a828a5fa1fbd81804fa51cd7e8673
2013-06-21 00:35:39 -07:00
Urvang Joshi
5e9675329c Container spec: a clarification on background color.
Change-Id: Ifeb565bd162abfa03dfcbf8b576657fe83956a6c
2013-06-20 17:38:08 -07:00
James Zern
30e77d0f66 Merge branch '0.3.0'
* 0.3.0: (57 commits)
  update ChangeLog
  Regression fix for alpha channels using color cache:
  wicdec: silence a format warning
  muxedit: silence some uninitialized warnings
  update ChangeLog
  update NEWS
  bump version to 0.3.1
  Revert "add WebPBlendAlpha() function to blend colors against background"
  Simplify forward-WHT + SSE2 version
  probe input file and quick-check for WebP format.
  configure: improve gl/glut library test
  update copyright text
  configure: remove use of AS_VAR_APPEND
  fix EXIF parsing in PNG
  add doc precision for WebPPictureCopy() and WebPPictureView()
  remove datatype qualifier for vmnv
  fix a memory leak in gif2webp
  fix two minor memory leaks in webpmux
  remove some cruft from swig/libwebp.jar
  README: update swig notes
  ...

Conflicts:
	NEWS
	examples/gif2webp.c
	src/dec/alpha.c
	src/dec/idec.c
	src/dec/vp8l.c
	src/enc/alpha.c
	src/enc/vp8l.c

Change-Id: Ib202fad7825a090c3b3a5169acd171369cface47
2013-06-20 14:47:48 -07:00
skal
1b631e291a alternate LUT-base reverse-bits code
Not faster on Unix/x86. Left the code for reference though.

Change-Id: I7d419e9835e7746b85b8f8cc6f2af92db0eb8b03
2013-06-20 19:58:11 +02:00
skal
24cc307ae3 ~20% faster lossless decoding
We use help from small LUTs for Huffman decoding.

Change-Id: I58db4ecd37282822094519f2aa14cf544beba975
2013-06-20 09:41:29 +02:00
skal
313d853fa9 Speedup for decoding lossless WebP photographs:
use bit_pos instead num_bit to update the bit-reader
37.69 MB/s -> 39.79 MB/s, 5.6 %

Change-Id: Ica476cc3e2fc2db084d6961bea8586b050bb221d
2013-06-18 17:26:52 +02:00
skal
24ee098a00 change the bytes_per_pixels_ field into more evocative use_8b_decode
+ split AllocateInternalBuffers() into two 32b/8b variants instead of
trying to do everything in one function.

Change-Id: I35cac9fcd990a2194c95da4b2a4046ca3a514343
2013-06-18 17:24:14 +02:00
James Zern
2a04b034f7 update ChangeLog
Change-Id: Idea3464bbcb28896179c99488e7b96a4341b508a
2013-06-17 16:53:22 -07:00
Urvang Joshi
7288950b88 Regression fix for alpha channels using color cache:
Considering the fact that insert to/lookup from the color cache is always 32
bit, use DecodeImageData() variant in that case.

Conflicts:
	src/dec/vp8l.c

Change-Id: I6c665a6cfbd9bd10651c1e82fa54e687cbd54a2b
(cherry picked from commit a37eff47d6)
2013-06-17 16:29:09 -07:00
James Zern
2e377b53b0 wicdec: silence a format warning
from x86_64-w64-mingw32-gcc

examples/wicdec.c: In function ‘ExtractICCP’:
examples/wicdec.c:131:21: warning: format ‘%u’ expects argument of type
‘unsigned int’, but argument 4 has type ‘size_t’ [-Wformat]

Change-Id: I6642dae62265a2276ae9ac96dd8ce6f1e2d37ca5
(cherry picked from commit ffae9f31e8)
2013-06-17 15:43:33 -07:00
James Zern
ad9e42a6fe muxedit: silence some uninitialized warnings
src/mux/muxedit.c:490: warning: 'x_offset' may be used uninitialized in this function
src/mux/muxedit.c:490: warning: 'y_offset' may be used uninitialized in this function

Change-Id: I4fd27f717e59a556354d0560b633d0edafe7a4d8
(cherry picked from commit 14cd5c6c40)
2013-06-17 15:43:33 -07:00
skal
3307c16327 Don't set alpha-channel to 0xff for alpha->green uplift
usually saves ~4 bytes on average (but, up to 10 -or even 16- sometimes).

Change-Id: Ib500e1a35471a2f3da453ffc8c7e95d28b8d34fe
2013-06-18 00:03:32 +02:00
pascal massimino
5130770cd3 Merge "wicdec: silence a format warning" 2013-06-17 14:45:01 -07:00
Urvang Joshi
a37eff47d6 Regression fix for alpha channels using color cache:
Considering the fact that insert to/lookup from the color cache is always 32
bit, use DecodeImageData() variant in that case.

Change-Id: I6c665a6cfbd9bd10651c1e82fa54e687cbd54a2b
2013-06-17 03:49:30 -07:00
pascal massimino
241cf99bc0 Merge "muxedit: silence some uninitialized warnings" 2013-06-16 23:23:20 -07:00
Urvang Joshi
c8f9c84d5e Regression fix for alpha unfiltering:
For vertical filter, correctly initialize 'preds' when not starting at
row 0.

Change-Id: I69697d73dde8a2f701f376ff3986d09fa6f7fee3
2013-06-16 02:00:44 -07:00
James Zern
14cd5c6c40 muxedit: silence some uninitialized warnings
src/mux/muxedit.c:490: warning: 'x_offset' may be used uninitialized in this function
src/mux/muxedit.c:490: warning: 'y_offset' may be used uninitialized in this function

Change-Id: I4fd27f717e59a556354d0560b633d0edafe7a4d8
2013-06-15 14:30:22 -07:00
James Zern
a368db81c6 dec/vp8l: quiet vs9 x64 type conversion warning
src\dec\vp8l.c(816) : warning C4244: '=' : conversion from '__int64' to
'int', possible loss of data
src\dec\vp8l.c(817) : warning C4244: '=' : conversion from '__int64' to
'int', possible loss of data

Change-Id: I1d376d5dea909395bff8741aba16e8eed83a6e8f
2013-06-14 19:24:54 -07:00
James Zern
ffae9f31e8 wicdec: silence a format warning
from x86_64-w64-mingw32-gcc

examples/wicdec.c: In function ‘ExtractICCP’:
examples/wicdec.c:131:21: warning: format ‘%u’ expects argument of type
‘unsigned int’, but argument 4 has type ‘size_t’ [-Wformat]

Change-Id: I6642dae62265a2276ae9ac96dd8ce6f1e2d37ca5
2013-06-14 18:44:59 -07:00
Urvang Joshi
8cf0701eb0 Alpha encoding: never filter in case of NO_COMPRESSION
This is because, filtering would never affect compression density for
this case.

Change-Id: I4bb14d3eb7da0a3805fda140eb1dfbf9ccc134f5
2013-06-14 13:34:25 -07:00
James Zern
825e73b1a6 update ChangeLog
Change-Id: I2e67e5d80cb8f8e4453cee45144bcc01e9a3efeb
2013-06-12 23:32:59 -07:00
James Zern
abf6f6915f update NEWS
Change-Id: Ie831ecc6995679acaf238686e2f287bfaa0221a7
2013-06-12 23:25:09 -07:00
James Zern
5a92c1a5e9 bump version to 0.3.1
libwebp{,decoder} - 0.3.1
libwebp libtool - 4.3.0 (compatible release)
libwebpdecoder libtool - 0.1.0 (compatible release)

mux/demux - 0.1.1
libtool - 0.1.0 (compatible release)

Change-Id: Icc8329a6bcd9eea5a715ea83f1535a66d6ba4b58
2013-06-12 23:19:13 -07:00
skal
86daf77c47 store top Y/U/V samples in packed fashion
More cache-line friendly than storing them split.

Change-Id: Ifb23cc3518ff1b5c37afe007558d4278868d75ea
2013-06-13 06:01:27 +02:00
James Zern
67bc353e6d Revert "add WebPBlendAlpha() function to blend colors against background"
This reverts commit dcbb1ca54a.

Dropping this for now to maintain compatibility for 0.3.1.

Change-Id: I44e032a072d317bb67e1439c42cff923e603038f
2013-06-12 15:02:09 -07:00
Urvang Joshi
068db59e26 Intertwined decoding of alpha and RGB
This will reduce the time to first decoded pixel.

Change-Id: I07b900c0ed4af3aac806b2731e11cd18ec16d016
2013-06-12 14:10:59 -07:00
skal
38cc011408 Simplify forward-WHT + SSE2 version
no precision loss observed
speed is not really faster (0.5% at max), as forward-WHT isn't called often.

also: replaced a "int << 3" (undefined by C-spec) by a "int * 8"
( supersedes https://gerrit.chromium.org/gerrit/#/c/48739/ )

Change-Id: I2d980ec2f20f4ff6be5636105ff4f1c70ffde401
(cherry picked from commit 9c4ce971a8)
2013-06-12 13:48:11 -07:00
Urvang Joshi
3fa595a571 Support decoding upto given row in DECODE_DATA_FUNC
This is in preparation for supporting Intertwined decoding of RGB and
alpha.

Change-Id: Ie1905d1212f4a00718a64dca020be3f4b1b870ec
2013-06-11 16:00:58 -07:00
Urvang Joshi
520f005f85 DequantizeLevels(): Add 'row' and 'num_rows' args
Change-Id: I0032e25c30f34362105d942f2dbb9ac75200f911
2013-06-11 15:59:21 -07:00
Urvang Joshi
47374b8273 Alpha unfilter for given set of rows
Support reconstruction of small number of rows at a time.

Change-Id: Ief1bc78c7ad011ec6df856551f3beb5f907fd8e0
2013-06-11 15:57:42 -07:00
Pascal Massimino
f32097e0df probe input file and quick-check for WebP format.
Error message is clearer that 'can't create demux object'.

Change-Id: Iec008601892f7cd8399e1948751747ac23305eef
(cherry picked from commit 830f72b7e9)
2013-06-11 15:03:23 -07:00
James Zern
a2aed1d08c configure: improve gl/glut library test
add a check for a libGL function (glOrtho) in addition to glutMainLoop
when establishing the need for libGL at link time.

fixes vwebp link failure on ubuntu 13.04+

Change-Id: I537e9a5cab5cf4cd8875e06268d2107f377e625e
(cherry picked from commit 2ccf58d648)
2013-06-11 15:03:23 -07:00
James Zern
c7e89cbb02 update copyright text
rather than symlink the webm/vpx terms, use the same header as libvpx to
reference in-tree files

based on the discussion in:
https://codereview.chromium.org/12771026/

Change-Id: Ia3067ecddefaa7ee01550136e00f7b3f086d4af4
(cherry picked from commit d640614d54)
2013-06-11 15:03:22 -07:00
James Zern
a00380d2ed configure: remove use of AS_VAR_APPEND
This wasn't used often and benefits were likely minimal. Dropping it
outright is a bit simpler than adding a compatibility ifdef.

provides some compatibility with older versions of autoconf.
tested with autoconf 2.59/automake 1.7/aclocal 1.7

Change-Id: Ifed892346cf2329597985704830a96fc58d65607
(cherry picked from commit 9326a56f8d)
2013-06-11 15:03:22 -07:00
skal
a94a88dd62 fix EXIF parsing in PNG
'exiftool' puts an 'APP1' chunk for exif, e.g.:
https://metacpan.org/source/EXIFTOOL/Image-ExifTool-5.87/lib/Image/ExifTool/PNG.pm#L305

Change-Id: I313d3e6945898526b8a4baf3d9016a2591a1a817
(cherry picked from commit bec11092ca)
2013-06-11 15:03:22 -07:00
skal
a71e5d84e9 add doc precision for WebPPictureCopy() and WebPPictureView()
output picture object is overwritten, not free'd or destroyed.

Change-Id: Ibb47ab444063e7ad90ff3d296260807ffe7ddbf9
(cherry picked from commit 23d28e216d)
2013-06-11 15:03:21 -07:00
skal
8287012ec7 remove datatype qualifier for vmnv
this fix is for clang (LLVM v4.2). gcc was fine.

Change-Id: Id4076cda84813f6f9548a01775b094cff22b4be9
(cherry picked from commit 3fe91635df)
2013-06-11 15:03:21 -07:00
skal
e190843029 fix a memory leak in gif2webp
(rgba->yuv allocates memory)
Also fixed few warning and cleaned the code up.

Change-Id: Id904ad3ad8802ea9fc3d34247d27193dfa7b0b99
(cherry picked from commit 764fdffaac)
2013-06-11 15:03:21 -07:00
skal
0b18b9eef6 fix two minor memory leaks in webpmux
(only occur in case of error)

Change-Id: Icab69bb364b77f8eae6cae91047354c27e610602
(cherry picked from commit 3e59a74d72)
2013-06-11 15:03:21 -07:00
James Zern
db5095d5b6 remove some cruft from swig/libwebp.jar
picked up a few unnecessary classes from a dirty tree in the last commit

Change-Id: I98be16a0bc8716476ce440da542d113f254aee78
(cherry picked from commit 325d15ff30)
2013-06-11 15:03:21 -07:00
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