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| author | Christophe Gisquet <christophe.gisquet@gmail.com> | 2015-10-12 19:37:47 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2015-10-13 13:32:21 +0200 |
| commit | 4369b9dc7b2b0da594223ce46615ba8e2b4cead6 (patch) | |
| tree | a04bb2c4c7ae62a33568a0850a20cd63fea61d3e /tools/build_libstagefright | |
| parent | e652f69b354bc6b5819012979985794cfd2805c9 (diff) | |
| download | ffmpeg-4369b9dc7b2b0da594223ce46615ba8e2b4cead6.tar.gz | |
x86: simple_idct(_put): 10bits versions
Modeled from the prores version. Clips to [0;1023] and is bitexact.
Bitexactness requires to add offsets in different places compared to
prores or C, and makes the function approximately 2% slower.
For 16 frames of a DNxHD 4:2:2 10bits test sequence:
C: 60861 decicycles in idct, 1048205 runs, 371 skips
sse2: 27567 decicycles in idct, 1048216 runs, 360 skips
avx: 26272 decicycles in idct, 1048171 runs, 405 skips
The add version is not implemented, so the corresponding dsp
function is set to NULL to make it clear in a code executing it.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'tools/build_libstagefright')
0 files changed, 0 insertions, 0 deletions