st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
st->codecpar->codec_id = AV_CODEC_ID_INTERPLAY_ACM;
- ff_alloc_extradata(st->codecpar, 14);
- if (!st->codecpar->extradata)
- return AVERROR(ENOMEM);
- ret = avio_read(s->pb, st->codecpar->extradata, 14);
- if (ret < 10)
- return ret < 0 ? ret : AVERROR_EOF;
+ ret = ff_get_extradata(s, st->codecpar, s->pb, 14);
+ if (ret < 0)
+ return ret;
st->codecpar->channels = AV_RL16(st->codecpar->extradata + 8);
st->codecpar->sample_rate = AV_RL16(st->codecpar->extradata + 10);