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path: root/vpx_dsp/variance.h
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2022-03-29remove sad x3,x8 specializationsJohann
These would compute the sum of absolute differences (sad) for a group of 3 or 8 references. This was used as part of an exhaustive search. vp8 only uses these functions in speed 0 and best quality. For vp9 this is only used with the --enable-non-greedy-mv experiment. This removes the 3- and 8-at-a-time optimized functions and uses the fall back code which will process 1 or 4 (vpx_sadMxNx4d) at a time. For configure --target=x86_64-linux-gcc --enable-realtime-only: libvpx.a before: 3002424 after: 2937622 delta: 64802 after 'strip libvpx.a' before: 2116998 after: 2073090 delta: 43908 Change-Id: I566d06e027c327b3bede68649dd551bba81a848e
2019-09-30namespace ARCH_* definesJames Zern
this prevents redefinition warnings if a toolchain sets one BUG=b/117240165 Change-Id: Ib5d8c303cd05b4dbcc8d42c71ecfcba8f6d7b90c
2019-07-14Use sdx8f in exhaustive_mesh_search_single_stepAngie Chiang
This speed up non_greedy_mv by 4% Change-Id: I9288c88db56ea4201a7ec4493ca5c567d76af0f1
2018-10-31clang-tidy: normalize variance functionsJohann
Always use src/ref and _ptr/_stride suffixes. Normalize to [xy]_offset and second_pred. Drop some stray source/recon_strides. BUG=webm:1444 Change-Id: I32362a50988eb84464ab78686348610ea40e5c80
2018-09-15cosmetics: normalize include guardsJames Zern
use the recommended format [1] of: <PROJECT>_<PATH>_<FILE>_H_ [1] https://google.github.io/styleguide/cppguide.html#The__define_Guard "All header files should have #define guards to prevent multiple inclusion. The format of the symbol name should be <PROJECT>_<PATH>_<FILE>_H_." Change-Id: I2e8ab0b32fb23c30fa43cff5fec12d043c0d2037
2017-07-10remove vp9_full_sad_searchJohann
This code is unused in vp9. Only vp8 still contains references to vpx_sad_NxMx[3|8] and only for sizes 16x16, 16x8, 8x16, 8x8 and 4x4. Remove the remaining sizes and all the highbitdepth versions. BUG=webm:1425 Change-Id: If6a253977c8e0c04599e25cbeb45f71a94f563e8
2016-08-23Remove halfpix specializationJohann
This function only exists as a shortcut to subpixel variance with predefined offsets. xoffset = 4 for horizontal, yoffset = 4 for vertical and both for "hv" Removing this allows the existing optimizations for the variance functions to be called. Instead of having only sse2 optimizations, this gives sse2, ssse3, msa and neon. BUG=webm:1273 Change-Id: Ieb407b423b91b87d33c4263c6a1ad5e673b0efd6
2016-07-25vpx_dsp: apply clang-formatclang-format
Change-Id: I3ea3e77364879928bd916f2b0a7838073ade5975
2016-06-17remove vp10James Zern
development has moved to the nextgenv2 branch and a snapshot from here was used to seed aomedia BUG=b/29457125 Change-Id: Iedaca11ec7870fb3a4e50b2c9ea0c2b056a0d3c0
2016-01-13Revert "Merge "Change highbd variance rounding to prevent negative variance.""Alex Converse
This reverts commit ea48370a500537906d62544ca4ed75301d79e772, reversing changes made to 15939cb2d76c773950cda40988ede89e111872ea. The commit was insufficiently tested and causes failures. Change-Id: I623d6fc2cd3ae6fd42d0abab1f8eada465ae57a7
2015-11-24Change highbd variance rounding to prevent negative variance.Alex Converse
Always round sum error and sum square error toward zero in variance calculations. This prevents variance from becoming negative. Avoiding rounding variance at all might be better but would be far more invasive. Change-Id: Icf24e0e75ff94952fc026ba6a4d26adf8d373f1c
2015-08-11Fork VP9 and VP10 codebaseJingning Han
This commit folks the VP9 and VP10 codebase and makes libvpx support VP8, VP9, and VP10. Change-Id: I81782e0b809acb3c9844bee8c8ec8f4d5e8fa356
2015-07-07Move sub pixel variance to vpx_dspJohann
Change-Id: I66bf6720c396c89aa2d1fd26d5d52bf5d5e3dff1
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