PeerStreamer

        int strt, skip;

        MOVAtom atom;

        ff_mov_read_esds(s, pb, atom);

        if (skip < 0 || !st->codec->extradata ||

            st->codec->codec_id != CODEC_ID_AAC) {

            av_log(s, AV_LOG_ERROR, "invalid AAC magic cookie\n");

    int64_t pos = 0, ccount;

    int num_packets, i;

    num_packets = avio_rb64(pb);

    if (num_packets < 0 || INT32_MAX / sizeof(AVIndexEntry) < num_packets)

        st->duration += caf->frames_per_packet ? caf->frames_per_packet : ff_mp4_read_descr_len(pb);

    }

        av_log(s, AV_LOG_ERROR, "error reading packet table\n");

        return -1;

    }

        switch (tag) {

        case MKBETAG('d','a','t','a'):

            avio_seek(pb, 4, SEEK_CUR); /* edit count */

            caf->data_size  = size < 0 ? -1 : size - 4;

            if (caf->data_size > 0 && !url_is_streamed(pb))

                avio_seek(pb, caf->data_size, SEEK_CUR);

    /* don't read past end of data chunk */

    if (caf->data_size > 0) {

        if (left <= 0)

            return AVERROR(EIO);

    }