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Code Issues Releases Activity

avcodec/tscc2: Don't check for errors for complete VLCs

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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-10-29 15:26:06 +01:00
parent 158265b439
commit 7781aa85bc
1 changed files with 0 additions and 6 deletions
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6
libavcodec/tscc2.c
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@ -151,8 +151,6 @@ static int tscc2_decode_mb(TSCC2Context *c, int *q, int vlc_set,
dc = get_bits(gb, 8); dc = get_bits(gb, 8);
} else { } else {
dc = get_vlc2(gb, c->dc_vlc.table, 9, 2); dc = get_vlc2(gb, c->dc_vlc.table, 9, 2);
if (dc == -1)
return AVERROR_INVALIDDATA;
if (dc == 0x100) if (dc == 0x100)
dc = get_bits(gb, 8); dc = get_bits(gb, 8);
} }
@ -161,15 +159,11 @@ static int tscc2_decode_mb(TSCC2Context *c, int *q, int vlc_set,
c->block[0] = dc; c->block[0] = dc;
nc = get_vlc2(gb, c->nc_vlc[vlc_set].table, 9, 1); nc = get_vlc2(gb, c->nc_vlc[vlc_set].table, 9, 1);
if (nc == -1)
return AVERROR_INVALIDDATA;
bpos = 1; bpos = 1;
memset(c->block + 1, 0, 15 * sizeof(*c->block)); memset(c->block + 1, 0, 15 * sizeof(*c->block));
for (l = 0; l < nc; l++) { for (l = 0; l < nc; l++) {
ac = get_vlc2(gb, c->ac_vlc[vlc_set].table, 9, 2); ac = get_vlc2(gb, c->ac_vlc[vlc_set].table, 9, 2);
if (ac == -1)
return AVERROR_INVALIDDATA;
if (ac == 0x1000) if (ac == 0x1000)
ac = get_bits(gb, 12); ac = get_bits(gb, 12);
bpos += ac & 0xF; bpos += ac & 0xF;