static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)

{

    AVStream *st;

    uint64_t size;

    uint8_t *buf;

    int err;



    if (c->fc->nb_streams < 1) // will happen with jp2 files

        return 0;

    st= c->fc->streams[c->fc->nb_streams-1];

    size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;

    if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)

        return AVERROR_INVALIDDATA;

    if ((err = av_reallocp(&st->codec->extradata, size)) < 0) {

        st->codec->extradata_size = 0;

        return err;

    }

    buf = st->codec->extradata + st->codec->extradata_size;

    st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;

    AV_WB32(       buf    , atom.size + 8);

    AV_WL32(       buf + 4, atom.type);

    avio_read(pb, buf + 8, atom.size);

    return 0;

}

static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)

{

    AVStream *st;

    uint64_t size;

    uint8_t *buf;

    int err;



    if (c->fc->nb_streams < 1) 

        return 0;

    st= c->fc->streams[c->fc->nb_streams-1];

    size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;

    if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)

        return AVERROR_INVALIDDATA;

    if ((err = av_reallocp(&st->codec->extradata, size)) < 0) {

        st->codec->extradata_size = 0;

        return err;

    }

    buf = st->codec->extradata + st->codec->extradata_size;

    st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;

    AV_WB32(       buf    , atom.size + 8);

    AV_WL32(       buf + 4, atom.type);

    avio_read(pb, buf + 8, atom.size);

    return 0;

}

    avio_read(pb, buf + 8, atom.size);         return AVERROR_INVALIDDATA;
static int FUNC_0(MOVContext *VAR_0, AVIOContext *VAR_1, MOVAtom VAR_2)

{

    AVStream *st;

    uint64_t size;

    uint8_t *buf;

    int VAR_3;



    if (VAR_0->fc->nb_streams < 1) 

        return 0;

    st= VAR_0->fc->streams[VAR_0->fc->nb_streams-1];

    size= (uint64_t)st->codec->extradata_size + VAR_2.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;

    if (size > INT_MAX || (uint64_t)VAR_2.size > INT_MAX)

        return AVERROR_INVALIDDATA;

    if ((VAR_3 = av_reallocp(&st->codec->extradata, size)) < 0) {

        st->codec->extradata_size = 0;

        return VAR_3;

    }

    buf = st->codec->extradata + st->codec->extradata_size;

    st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;

    AV_WB32(       buf    , VAR_2.size + 8);

    AV_WL32(       buf + 4, VAR_2.type);

    avio_read(VAR_1, buf + 8, VAR_2.size);

    return 0;

}

static int FUNC_0(MOVContext *VAR_0, AVIOContext *VAR_1, MOVAtom VAR_2)
{ AVStream *st; uint64_t size; uint8_t *buf; int VAR_3; if (VAR_0->fc->nb_streams < 1)
return 0; st= VAR_0->fc->streams[VAR_0->fc->nb_streams-1]; size= (uint64_t)st->codec->extradata_size + VAR_2.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE; if (size > INT_MAX || (uint64_t)VAR_2.size > INT_MAX)
return AVERROR_INVALIDDATA; if ((VAR_3 = av_reallocp(&st->codec->extradata, size)) < 0) { st->codec->extradata_size = 0; return VAR_3; } buf = st->codec->extradata + st->codec->extradata_size; st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE; AV_WB32(       buf    , VAR_2.size + 8); AV_WL32(       buf + 4, VAR_2.type); avio_read(VAR_1, buf + 8, VAR_2.size); return 0; }