avcodec/siren: Improve the bits left threshold in decode_envelope()

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
3 years ago · 1ad4782d2a
parent 109113b54f
commit 1ad4782d2a
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/siren.c
+++ b/libavcodec/siren.c
@ -447,7 +447,7 @@ static int decode_envelope(SirenContext *s, GetBitContext *gb,
        int index = 0;

        do {
-            if (get_bits_left(gb) < 4)
+            if (get_bits_left(gb) < 4 + number_of_regions - i + s->checksum_bits)
                return AVERROR_INVALIDDATA;
            index = differential_decoder_tree[i - 1][index][get_bits1(gb)];
        } while (index > 0);