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ipmovie: do not read audio packets before the codec is known

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Prevents a division by zero.
This commit is contained in:
Janne Grunau
2012-01-05 21:57:22 +01:00
parent 696ace50ea
commit f5be84cfbc
1 changed files with 5 additions and 0 deletions
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5
libavformat/ipmovie.c
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@@ -116,6 +116,11 @@ static int load_ipmovie_packet(IPMVEContext *s, AVIOContext *pb,
int chunk_type;
if (s->audio_chunk_offset) {
if (s->audio_type == CODEC_ID_NONE) {
av_log(NULL, AV_LOG_ERROR, "Can not read audio packet before"
"audio codec is known\n");
return CHUNK_BAD;
}
/* adjust for PCM audio by skipping chunk header */
if (s->audio_type != CODEC_ID_INTERPLAY_DPCM) {