[FFmpeg-devel] [PATCH] Optionally hardcode aes tables

[Diego 'Flameeyes' Pettenò]

Again similarly to what Aurelien did for crc, this patch optionally
replaces the run-time defined tables for AES encryption and decryption
with precalculated ones.

With this we avoid COW for the tables, which aren't really small, at the
cost of increasing on-disk size of the file:

flame at enterprise mytmpfs % codiff original.so hardcoded.so
aes.c:
  init_multbl2 | -151
  av_aes_init  | -403
 2 functions changed, 554 bytes removed
flame at enterprise mytmpfs % ls -l original.so hardcoded.so
-rwxr-xr-x 1 flame flame 154007  8 gen 23:00 hardcoded.so
-rwxr-xr-x 1 flame flame 146716  8 gen 22:59 original.so

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-- 
Diego "Flameeyes" Petten?
http://farragut.flameeyes.is-a-geek.org/
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