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avcodec/mpeg4videodec: Don't initialize unused RL VLCs

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The RLTables whose VLC tables are only used for intra blocks only use
the very first VLC table; yet all 32 have been initialized. This commit
stops this by switching to INIT_FIRST_VLC_RL. This saves 201624B from
the .bss segment; in case the decoder is actually used, this translates
into less memory used.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-12-08 23:32:35 +01:00
parent b0c4748770
commit 3e0bd5064d
1 changed files with 2 additions and 2 deletions
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4
libavcodec/mpeg4videodec.c
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@ -3389,9 +3389,9 @@ av_cold void ff_mpeg4videodec_static_init(void) {
ff_rl_init(&ff_mpeg4_rl_intra, ff_mpeg4_static_rl_table_store[0]);
ff_rl_init(&ff_rvlc_rl_inter, ff_mpeg4_static_rl_table_store[1]);
ff_rl_init(&ff_rvlc_rl_intra, ff_mpeg4_static_rl_table_store[2]);
INIT_VLC_RL(ff_mpeg4_rl_intra, 554);
INIT_FIRST_VLC_RL(ff_mpeg4_rl_intra, 554);
INIT_VLC_RL(ff_rvlc_rl_inter, 1072);
INIT_VLC_RL(ff_rvlc_rl_intra, 1072);
INIT_FIRST_VLC_RL(ff_rvlc_rl_intra, 1072);
INIT_VLC_STATIC(&dc_lum, DC_VLC_BITS, 10 /* 13 */,
&ff_mpeg4_DCtab_lum[0][1], 2, 1,
&ff_mpeg4_DCtab_lum[0][0], 2, 1, 512);