JSPDF Custom Font Add Not Working

CSS Code

@font-face {
    font-family: Calibri;
    src: url("fonts/calibri.ttf");
    font-style: normal;
}

JS Code

doc.setFont('Calibri');
doc.setFontSize(7.5);
doc.setFontType("normal");
doc.text(10, 10, "Hi, How r u");

I want to add Calibri Font, but it is not working
List of js script included

<script src="/assets/global/scripts/jspdf/jspdf.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/acroform.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/from_html.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/addhtml.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/addimage.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/annotations.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/autoprint.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/canvas.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/cell.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/context2d.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/javascript.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/outline.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/prevent_scale_to_fit.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/split_text_to_size.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/standard_fonts_metrics.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/svg.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/total_pages.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/zlib.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/png.js" type="text/javascript"></script> 
<script src="/assets/global/scripts/jspdf/plugins/addimage.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/png_support.js" type="text/javascript"></script>
<script src="/assets/global/scripts/jspdf/plugins/filesaver.js" type="text/javascript"></script>

CSS

/*
To change this license header, choose License Headers in Project Properties.
To change this template file, choose Tools | Templates
and open the template in the editor.
*/
/* 
    Created on : Apr 23, 2017, 12:57:52 PM
    Author     : common
*/

@font-face {
    font-family: Calibri;
    src: url("fonts/calibri.ttf");
    font-style: normal;
}

/*
@font-face {
    font-family: Calibri;
    src: url("fonts/calibrii.ttf");
    font-style: italic;
}

@font-face {
    font-family: Calibri;
    src: url("fonts/calibrib.ttf");
    font-style: normal;
    font-weight: bold;
}

@font-face {
    font-family: Calibri;
    src: url("fonts/calibriz.ttf");
    font-style: italic;
    font-weight: bold;
}*/

Answers

You can't at the moment.
If you take a look to the source code, you see there is a switch that, if it doesn't know the font, returns times as font

switch (fontName) {
      case 'sans-serif':
      case 'verdana':
      case 'arial':
      case 'helvetica':
        fontName = 'helvetica';
        break;
      case 'fixed':
      case 'monospace':
      case 'terminal':
      case 'courier':
        fontName = 'courier';
        break;
      case 'serif':
      case 'cursive':
      case 'fantasy':
      default:
        fontName = 'times';
        break;
    }

You can either use one of that fonts, or edit the library to support your font.
Otherwise