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audio_frame_queue: fix null ptr dereference

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This happened when a frame was removed before any was added.
Fixes part of Ticket1208

Found-by: John Villamil, Piotr Bandurski and Carl Eugen Hoyos
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-05-15 02:15:23 +02:00
parent 4c73b3b1e0
commit 3938a0eeae
1 changed files with 1 additions and 1 deletions
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2
libavcodec/audio_frame_queue.c
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@ -100,7 +100,7 @@ void ff_af_queue_remove(AudioFrameQueue *afq, int nb_samples, int64_t *pts,
if(nb_samples){
av_assert0(!afq->frame_count);
if(afq->frames[0].pts != AV_NOPTS_VALUE)
if(afq->frames && afq->frames[0].pts != AV_NOPTS_VALUE)
afq->frames[0].pts += nb_samples;
av_log(afq->avctx, AV_LOG_DEBUG, "Trying to remove %d more samples than are in the que\n", nb_samples);
}