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* avcodec/mp_cmp: reject invalid comparison function valuesJames Almer2023-04-14
| | | | | | Fixes tickets #10306 and #10318. Signed-off-by: James Almer <jamrial@gmail.com>
* avcodec/me_cmp: Mark ff_square_tab as hiddenAndreas Rheinhardt2022-10-09
| | | | | | | | | | | ff_square_tab is always used with an offset; if this table is marked as hidden, the compiler can infer that it and therefore also ff_square_tab + 256 have a fixed offset from the code. This allows to avoid performing "+ 256" at runtime by baking it into the offset from the code to the table. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
* avcodec/me_cmp: Constify me_cmp_func buffer parametersAndreas Rheinhardt2022-07-31
| | | | Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
* lavc/aarch64: motion estimation functions in neonSwinney, Jonathan2022-06-28
| | | | | | | | | | | | | | | | | | | | | | - ff_pix_abs16_neon - ff_pix_abs16_xy2_neon In direct micro benchmarks of these ff functions verses their C implementations, these functions performed as follows on AWS Graviton 3. ff_pix_abs16_neon: pix_abs_0_0_c: 141.1 pix_abs_0_0_neon: 19.6 ff_pix_abs16_xy2_neon: pix_abs_0_3_c: 269.1 pix_abs_0_3_neon: 39.3 Tested with: ./tests/checkasm/checkasm --test=motion --bench --disable-linux-perf Signed-off-by: Jonathan Swinney <jswinney@amazon.com> Signed-off-by: Martin Storsjö <martin@martin.st>
* avcodec/me_cmp: Remove ff_check_alignment()Andreas Rheinhardt2021-01-21
| | | | | | | | | | | | | | | | | The usage of a static variable presents a potential for data races and means that this function can't be used in init functions of codecs with FF_CODEC_CAP_INIT_THREADSAFE (unless of course one presumes that everything is alright in which case the error is not triggered; but then the whole function is pointless...). This makes the Snow decoder init-threadsafe as it already claims. Notice that this function has been removed in 2014 by Libav in commit 9103185bd116930f90b847090e66a64fa9971ce2, because only some codepaths are checked this way and because it only affects legacy compilers. The latter is of course even more true today. Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
* avcodec/me_cmp: remove ff_me_cmp_init_static()Muhammad Faiz2018-02-05
| | | | | | | Precalculate and constify ff_square_tab. Reviewed-by: James Almer <jamrial@gmail.com> Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>
* avcodec/me_cmp: Fix median_sad sizeMichael Niedermayer2016-11-27
| | | | | | | Fixes out of array read Fixes: COV1396255 Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* avcodec/me_cmp: add median SAD compare functionStanislav Dolganov2016-08-22
| | | | Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* avcodec/mips: MSA (MIPS-SIMD-Arch) optimizations for me_cmp functionsShivraj Patil2015-07-06
| | | | | | | This patch adds MSA (MIPS-SIMD-Arch) optimizations for me_cmp functions in new file me_cmp_msa.c Signed-off-by: Shivraj Patil <shivraj.patil@imgtec.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* Merge commit '9c12c6ff9539e926df0b2a2299e915ae71872600'Michael Niedermayer2014-11-24
|\ | | | | | | | | | | | | | | | | | | | | | | | | * commit '9c12c6ff9539e926df0b2a2299e915ae71872600': motion_est: convert stride to ptrdiff_t Conflicts: libavcodec/me_cmp.c libavcodec/ppc/me_cmp.c libavcodec/x86/me_cmp_init.c See: 9c669672c7fd45ef1cad782ab551be438ceac6cd Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * motion_est: convert stride to ptrdiff_tVittorio Giovara2014-11-24
| | | | | | | | | | CC: libav-stable@libav.org Bug-Id: CID 700556 / CID 700557 / CID 700558
* | Merge commit '2d60444331fca1910510038dd3817bea885c2367'Michael Niedermayer2014-07-17
|/ | | | | | | | | | | | | | | | | | | | | | | | | * commit '2d60444331fca1910510038dd3817bea885c2367': dsputil: Split motion estimation compare bits off into their own context Conflicts: configure libavcodec/Makefile libavcodec/arm/Makefile libavcodec/dvenc.c libavcodec/error_resilience.c libavcodec/h264.h libavcodec/h264_slice.c libavcodec/me_cmp.c libavcodec/me_cmp.h libavcodec/motion_est.c libavcodec/motion_est_template.c libavcodec/mpeg4videoenc.c libavcodec/mpegvideo.c libavcodec/mpegvideo_enc.c libavcodec/x86/Makefile libavcodec/x86/me_cmp_init.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
* dsputil: Split motion estimation compare bits off into their own contextDiego Biurrun2014-07-17
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