static inline int ape_decode_value_3900(APEContext *ctx, APERice *rice)
{
    unsigned int x, overflow;
    int tmpk;

    overflow = range_get_symbol(ctx, counts_3970, counts_diff_3970);

    if (overflow == (MODEL_ELEMENTS - 1)) {
        tmpk = range_decode_bits(ctx, 5);
        overflow = 0;
    } else
        tmpk = (rice->k < 1) ? 0 : rice->k - 1;

    if (tmpk <= 16 || ctx->fileversion < 3910) {
        if (tmpk > 23) {
            av_log(ctx->avctx, AV_LOG_ERROR, "Too many bits: %d\n", tmpk);
            return AVERROR_INVALIDDATA;
        }
        x = range_decode_bits(ctx, tmpk);
    } else if (tmpk <= 31) {
        x = range_decode_bits(ctx, 16);
        x |= (range_decode_bits(ctx, tmpk - 16) << 16);
    } else {
        av_log(ctx->avctx, AV_LOG_ERROR, "Too many bits: %d\n", tmpk);
        return AVERROR_INVALIDDATA;
    }
    x += overflow << tmpk;

    update_rice(rice, x);

    /* Convert to signed */
    if (x & 1)
        return (x >> 1) + 1;
    else
        return -(x >> 1);
}
Unknown