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qdm2_fft_decode_tones: fix infinite loop

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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-04-15 16:30:17 +02:00
parent 1a974679d0
commit 20335598f2
1 changed files with 4 additions and 0 deletions
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4
libavcodec/qdm2.c
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@ -1358,6 +1358,10 @@ static void qdm2_fft_decode_tones (QDM2Context *q, int duration, GetBitContext *
while (get_bits_left(gb)>0) {
if (q->superblocktype_2_3) {
while ((n = qdm2_get_vlc(gb, &vlc_tab_fft_tone_offset[local_int_8], 1, 2)) < 2) {
if (get_bits_left(gb)<0) {
av_log(0, AV_LOG_ERROR, "overread in qdm2_fft_decode_tones()\n");
return;
}
offset = 1;
if (n == 0) {
local_int_4 += local_int_10;