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avcodec/cavsdec: Set ret on errors in decode_pic()

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Fixes regression and fate failure on some machienes

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-10-17 13:05:24 +02:00
parent 097c917c14
commit 0279e727e9
2 changed files with 13 additions and 5 deletions
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16
libavcodec/cavsdec.c
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@ -1102,15 +1102,19 @@ static int decode_pic(AVSContext *h)
if (check_for_slice(h))
skip_count = -1;
if (h->skip_mode_flag && (skip_count < 0)) {
if (get_bits_left(&h->gb) < 1)
if (get_bits_left(&h->gb) < 1) {
ret = AVERROR_INVALIDDATA;
break;
}
skip_count = get_ue_golomb(&h->gb);
}
if (h->skip_mode_flag && skip_count--) {
decode_mb_p(h, P_SKIP);
} else {
if (get_bits_left(&h->gb) < 1)
if (get_bits_left(&h->gb) < 1) {
ret = AVERROR_INVALIDDATA;
break;
}
mb_type = get_ue_golomb(&h->gb) + P_SKIP + h->skip_mode_flag;
if (mb_type > P_8X8)
ret = decode_mb_i(h, mb_type - P_8X8 - 1);
@ -1125,15 +1129,19 @@ static int decode_pic(AVSContext *h)
if (check_for_slice(h))
skip_count = -1;
if (h->skip_mode_flag && (skip_count < 0)) {
if (get_bits_left(&h->gb) < 1)
if (get_bits_left(&h->gb) < 1) {
ret = AVERROR_INVALIDDATA;
break;
}
skip_count = get_ue_golomb(&h->gb);
}
if (h->skip_mode_flag && skip_count--) {
ret = decode_mb_b(h, B_SKIP);
} else {
if (get_bits_left(&h->gb) < 1)
if (get_bits_left(&h->gb) < 1) {
ret = AVERROR_INVALIDDATA;
break;
}
mb_type = get_ue_golomb(&h->gb) + B_SKIP + h->skip_mode_flag;
if (mb_type > B_8X8)
ret = decode_mb_i(h, mb_type - B_8X8 - 1);