printf("  Id CIN video: expected extradata size of %d\n", HUFFMAN_TABLE_SIZE);
av_log(s->avctx, AV_LOG_ERROR, "  Id CIN video: expected extradata size of %d\n", HUFFMAN_TABLE_SIZE);
static int idcin_decode_init(AVCodecContext *avctx){    IdcinContext *s = (IdcinContext *)avctx->priv_data;    int i, j, histogram_index = 0;    unsigned char *histograms;    s->avctx = avctx;    avctx->pix_fmt = PIX_FMT_PAL8;    avctx->has_b_frames = 0;    dsputil_init(&s->dsp, avctx);    /* make sure the Huffman tables make it */    if (s->avctx->extradata_size != HUFFMAN_TABLE_SIZE) {        printf("  Id CIN video: expected extradata size of %d\n", HUFFMAN_TABLE_SIZE);        return -1;    }    /* build the 256 Huffman decode trees */    histograms = (unsigned char *)s->avctx->extradata;    for (i = 0; i < 256; i++) {        for(j = 0; j < HUF_TOKENS; j++)            s->huff_nodes[i][j].count = histograms[histogram_index++];        huff_build_tree(s, i);    }    s->frame.data[0] = NULL;    return 0;}