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avcodec/mpeg12enc: Always initialize MPEG-2 intra VLC table lengths

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The MPEG-1/2 encoders initialize several tables once during the first
time one of the encoders is initialized; the table for MPEG-2 intra VLC
lengths is only initialized if it is used for this encoder instance.
This implies that if the first MPEG-1/2 encoder to be initialized does
not use it, it will never be initialized even if a later encoder
instance makes use of them. Fix this by initializing this table
unconditionally.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
(cherry picked from commit ef3c1670d488d1cffc98115a5e67b07ee921e47d)
This commit is contained in:
Andreas Rheinhardt 2020-11-24 13:29:29 +01:00
parent b7d4a08f0d
commit eb5c81f373
1 changed files with 0 additions and 1 deletions
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libavcodec/mpeg12enc.c
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@ -1055,7 +1055,6 @@ av_cold void ff_mpeg1_encode_init(MpegEncContext *s)
}
init_uni_ac_vlc(&ff_rl_mpeg1, uni_mpeg1_ac_vlc_len);
if (s->intra_vlc_format)
init_uni_ac_vlc(&ff_rl_mpeg2, uni_mpeg2_ac_vlc_len);
/* build unified dc encoding tables */