static void write_codebooks(RoqContext *enc, RoqTempdata *tempData)
{
    int i, j;
    uint8_t **outp= &enc->out_buf;

    if (tempData->numCB2) {
        bytestream_put_le16(outp, RoQ_QUAD_CODEBOOK);
        bytestream_put_le32(outp, tempData->numCB2*6 + tempData->numCB4*4);
        bytestream_put_byte(outp, tempData->numCB4);
        bytestream_put_byte(outp, tempData->numCB2);

        for (i=0; i<tempData->numCB2; i++) {
            bytestream_put_buffer(outp, enc->cb2x2[tempData->f2i2[i]].y, 4);
            bytestream_put_byte(outp, enc->cb2x2[tempData->f2i2[i]].u);
            bytestream_put_byte(outp, enc->cb2x2[tempData->f2i2[i]].v);
        }

        for (i=0; i<tempData->numCB4; i++)
            for (j=0; j<4; j++)
                bytestream_put_byte(outp, tempData->i2f2[enc->cb4x4[tempData->f2i4[i]].idx[j]]);

    }
}