Prevents a division by zero.
int chunk_type;
if (s->audio_chunk_offset) {
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) {
/* adjust for PCM audio by skipping chunk header */
if (s->audio_type != CODEC_ID_INTERPLAY_DPCM) {