Some of the RLTables used by msmpeg4dec actually coincide with other
RLTables: ff_rl_table[5] coincides with ff_h263_rl_inter (and
ff_rl_table[2] with ff_mpeg4_rl_intra). Given that ff_h263_rl_inter is
always initialized before msmpeg4dec's RLTables are initialized, one can
just reuse the VLC tables by copying the pointers; after all, there are
no ownership issues for static data. This saves 70912B from the .bss
segment, translating into actual memory savings when this decoder is
actually used.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
INIT_FIRST_VLC_RL(ff_rl_table[2], 554);
INIT_VLC_RL(ff_rl_table[3], 940);
INIT_VLC_RL(ff_rl_table[4], 962);
- INIT_VLC_RL(ff_rl_table[5], 554);
+ /* ff_rl_table[5] coincides with ff_h263_rl_inter which has just been
+ * initialized in ff_h263_decode_init() above. So just copy the VLCs. */
+ av_assert1(ff_h263_rl_inter.rl_vlc[0]);
+ memcpy(ff_rl_table[5].rl_vlc, ff_h263_rl_inter.rl_vlc, sizeof(ff_rl_table[5].rl_vlc));
mv = &ff_mv_tables[0];
INIT_VLC_STATIC(&mv->vlc, MV_VLC_BITS, mv->n + 1,