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avcodec/g2meet: Use least max_depth in get_vlc2() 

The longest AC codes of the standard JPEG tables are 16 bits long; for
the DC tables, the maximum is 11, so using max_depth of two is
sufficient.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-11-01 02:17:43 +01:00
parent e74621b0a8
commit 73b3ea5728
1 changed files with 2 additions and 2 deletions
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4
libavcodec/g2meet.c
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@ -248,7 +248,7 @@ static int jpg_decode_block(JPGContext *c, GetBitContext *gb,
return AVERROR_INVALIDDATA;
c->bdsp.clear_block(block);
dc = get_vlc2(gb, c->dc_vlc[is_chroma].table, 9, 3);
dc = get_vlc2(gb, c->dc_vlc[is_chroma].table, 9, 2);
if (dc < 0)
return AVERROR_INVALIDDATA;
if (dc)
@ -259,7 +259,7 @@ static int jpg_decode_block(JPGContext *c, GetBitContext *gb,
pos = 0;
while (pos < 63) {
val = get_vlc2(gb, c->ac_vlc[is_chroma].table, 9, 3);
val = get_vlc2(gb, c->ac_vlc[is_chroma].table, 9, 2);
if (val < 0)
return AVERROR_INVALIDDATA;
pos += val >> 4;