To be enabled with the flag WEBP_USE_THREAD.
For now it's only available on unix (pthread), when using Makefile.unix
Will be switched on more generally later.
In-loop filtering and output (=rescaling/yuv->rgb conversion)
is done in parallel to bitstream decoding, lagging 1 row behind.
Example:
examples/dwebp bryce.webp -v
Time to decode picture: 0.680s
examples/dwebp bryce.webp -v -mt
Time to decode picture: 0.515s
Change-Id: Ic30a897423137a3bdace9c4e30465ef758fe53f2
(release|debug)-dynamic
These configurations will produce a dll in bin/ and an import lib under
lib/.
Currently the -noasm switch in the examples will be disabled for these
builds due to a dependency on VP8EncGetCPUInfo.
Change-Id: I2cbac0064f0e500698d14ffc03200791ca837090
Add WEBP_EXTERN(type) macro which should make Windows DLL builds simpler
by allowing the signature to be changed.
Change-Id: I0cfa45dff779985680b1a38ddff30973a0d26639
RGB565 and ARGB4444 are only supported through the advanced decoding API.
ARGB being somewhat generic, there's an easy WebPDecodeARGB()
new function for convenience.
Patch by Vikas Arora (vikaas dot arora at gmail dot com)
Change-Id: Ic7b6f72bd70aca458d14e7fdd23679212430ebca
Rather than add bulk to test for the new flag, simply comment out -Wvla
to keep the base makefile simple.
-Wvla was added in gcc-4.3.0.
Change-Id: I21feb456d7498ea628defb436a50c3d828e7f971
~5-10% faster.
Heavy 8bit arithmetic trickery!
Patch by Somnath Banerjee (somnath at google dot com)
Change-Id: I9fd2c511d9f631e9cf4b008c46127b49fb527b47
HOSTTYPE is x86_64 on e.g.,
bash 3.2.48(1)-release
ProductName: Mac OS X
ProductVersion: 10.6.7
BuildVersion: 10J869
intel-mac seems to be the value under tcsh.
Change-Id: I814ad6d3b733933057cea605917b185ff6d423d0
When WEBP_HAVE_(JPEG|PNG) were undefined the stub functions would
produce warnings for unused parameters.
Change-Id: I79b2457c769d1f9382be834162de019c5427f94b
You can now use WebPDecBuffer, WebPBitstreamFeatures and WebPDecoderOptions
to have better control over the decoding process (and the speed/quality tradeoff).
WebPDecoderOptions allow to:
- turn fancy upsampler on/off
- turn in-loop filter on/off
- perform on-the-fly cropping
- perform on the-fly rescale
(and more to come. Not all features are implemented yet).
On-the-fly cropping and scaling allow to save quite some memory
(as the decoding operation will now scale with the output's size, not
the input's one). It saves some CPU too (since for instance,
in-loop filtering is partially turned off where it doesn't matter,
and some YUV->RGB conversion operations are ommitted too).
The scaler uses summed area, so is mainly meant to be used for
downscaling (like: for generating thumbnails or previews).
Incremental decoding works with these new options.
More doc to come soon.
dwebp is now using the new decoding interface, with the new flags:
-nofancy
-nofilter
-crop top left width height
-scale width height
Change-Id: I08baf2fa291941686f4ef70a9cc2e4137874e85e
Rather than %include'ing decode.h and potentially pickup new
(unsupported functions), explicitly list the desired functions as with
encode.
Reorganize a bit to contain most of the language specific additions to
one area. This fixes the visibility of the wrap_* functions in java. The
method modifiers need to come before the function prototypes.
Change-Id: I595df4d1a60edcb263923b5a2621879d3b6233cf
This is a temporary workaround for issue #80.
Currently dec/dsp_sse2 is not included in Makefile.vc. Simply adding it
will cause a build error, however, as cl does not support aligning
function parameters producing, e.g.,
src\dec\dsp_sse2.c(228) : error C2719: 'q1': formal parameter with
__declspec(align('16')) won't be aligned
Change-Id: Id29e6802dd29110e59c4f6d13ffa5d4793c750a0
Wrap WebPEncode???* to provide an interface similar to decode.
As only WebPGetEncoderVersion is wrapped directly from encode.h avoid
including it in the swig file to reduce %ignore's.
This change also removes unnecessary incremental decoding related enums.
Change-Id: I0b5424026aa6ae012c6a29ad2f2301c2681ca301
There was 1 unneeded sample line allocated for the filter cache in of simple filtering.
+ Add an explaining comment.
Change-Id: I775a596c8b8643e773e0eade8aa341dc23fb290f
Replace usage of _WIN32 in examples as this does not guarantee the
presence of wincodec.h.
mingw-w64 notably includes wincodec.h, though other releases do not.
Under cygwin the following can be used for a WIC enabled binary:
./configure --target=i686-pc-mingw32 CC=i686-w64-mingw32-gcc.exe
Change-Id: Ica6a714c3356a8eaf88486a1c3f5aa6adde394c0
