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Code Issues Releases Activity

avcodec/mpeg4videodec: Don't initialize unused parts of RLTables

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The reversible VLC tables use a simpler escaping method
than the ordinary VLCs: It does not use max_run, max_level etc.
and therefore one does not need to initialize these at all.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2025-05-18 01:01:28 +02:00
parent a0a136e57b
commit f887a2b006
1 changed files with 0 additions and 3 deletions
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3
libavcodec/mpeg4videodec.c
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@ -3901,7 +3901,6 @@ static int mpeg4_update_thread_context_for_user(AVCodecContext *dst,
static av_cold void mpeg4_init_static(void) static av_cold void mpeg4_init_static(void)
{ {
static uint8_t mpeg4_rvlc_rl_tables[2][2][2 * MAX_RUN + MAX_LEVEL + 3];
static VLCElem vlc_buf[6498]; static VLCElem vlc_buf[6498];
VLCInitState state = VLC_INIT_STATE(vlc_buf); VLCInitState state = VLC_INIT_STATE(vlc_buf);
@ -3924,8 +3923,6 @@ static av_cold void mpeg4_init_static(void)
} }
ff_mpeg4_init_rl_intra(); ff_mpeg4_init_rl_intra();
ff_rl_init(&ff_rvlc_rl_inter, mpeg4_rvlc_rl_tables[0]);
ff_rl_init(&ff_rvlc_rl_intra, mpeg4_rvlc_rl_tables[1]);
INIT_FIRST_VLC_RL(ff_mpeg4_rl_intra, 554); INIT_FIRST_VLC_RL(ff_mpeg4_rl_intra, 554);
VLC_INIT_RL(ff_rvlc_rl_inter, 1072); VLC_INIT_RL(ff_rvlc_rl_inter, 1072);
INIT_FIRST_VLC_RL(ff_rvlc_rl_intra, 1072); INIT_FIRST_VLC_RL(ff_rvlc_rl_intra, 1072);