Rather than make a copy, requiring an additional lock/unlock only to set
the pointer to itself, pass the address of SharpYuvGetCPUInfo and use it
as a sentinel to avoid updating the pointer.
Change-Id: I22fb467f1659c16805c0d3bc7aaeba6a1bb16dbb
This gives a similar structure to libwebp and fixes a bug where passing
NULL to SharpYuvInit() would unconditionally set optimized function
pointers. SharpYuvInit() is left as an undocumented public function and
SharpYuvGetCPUInfo is kept private to serialize updates to the pointer.
Change-Id: Id72fbf3ba5b396367510e3bcd1ee2e4e11b95b8c
this is similar to WEBP_DSP_INIT and avoids the potential for a race in
initializing the function pointers and gamma table
Change-Id: I15af7d1a3e92c42eaa735751ca33eba0d1e83283
Headers are installed in a "sharpyuv" subdirectory of the webp
dir, e.g. /usr/local/include/webp/sharpyuv/
Remove unnecessary dependency from sharpyuv to webp/types.h
Add SHARPYUV_EXTERN so that only symbols meant to be public
are exported.
Sharpyuv users can use the library with:
find_package(WebP)
if(TARGET WebP::sharpyuv)
# ... use WebP::sharpyuv
endif()
Change-Id: I602a25521a135a2edc39d6587610484fe6447ec5
libwebp still has a size threshold of 4 pixels in picture_csp_enc.c
but the sharpyuv library itself can handle any image size.
Change-Id: Ic1c78c8f8fae528395fa46a74f717f47cb13098e
- Remove SHALF constant so that we get back the original value when
calling UpScale then downscale with rounding
- Make the linear->gamma precomputed table bigger (8 bits rather than 5)
- Round values in kLinearToGammaTabS
Change-Id: Ic9634d32cf93de321d2f6e9e4cad7f156d8d07df
Remove unused constants.
Use ALL_CAPS for defines and kCamelCase for static const values.
Change some defines into static constants if they are not used in array sizes.
Change-Id: I036b0f99215fd0414a33f099bd6b809ff8ee4541
It's self contained apart from a dependency on src/webp/types.h and src/dsp/cpu.h
For now it's only set up as an internal library, not an installable one.
Webp doesn't depend on it yet, the code is only duplicated.
Change-Id: I752799894f9d4105d0d296ddebd9f9641181a1ec
