tools/raw2uint16.html


<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>File converter</title>  
</head>
<body>

<div id="main">

	<h1>Raw Signed Int16 PCM to uint16_t array converter</h1>
	  <form name="frmConvert" action="">
		<p>
		File: 
		<input type="file" name="fileinput" onchange='openFile(event)' /> 
		</p>        
      <p>Options:</p>
        <p>
        Prefix data with variable definition <input id="prefix" value="const uint16_t sound[] = ">		  
        <br>
        Samples prefix <input id="samplePrefix"  type="text" value="0x" maxlength="10" >
        <br>
        Samples suffix <input id="sampleSuffix" type="text" value=", " maxlength="10" >
        <br>
        Insert newlines after every <input id="newline" type="number" value="10" min="0" max="100" style="width: 50px" > samples		  
        </p>
			  <p>
			    <button type=button name="btnConvert"
            onclick="Convert()">
            Convert
          </button>
			  </p>		  
			</form>
      <p>Output:</p>
        <p>
      <textarea id="ed_output" rows="25" style="width: 100%"></textarea>				
      </p>			    
  </div>
<script type="text/javascript">   
  var samples;
	
  function Convert() {	
    var hexText = document.frmConvert.prefix.value;
    var sPrefix = document.frmConvert.samplePrefix.value;
    var sSuffix = document.frmConvert.sampleSuffix.value;
    var newline = document.frmConvert.newline.value;
    
    hexText += "\r\n{\r\n"
    for (i=0; i<samples.length; i++) {
      var sample = samples[i];
      sample += 32768;  // map int16_t -32768 .. +32767 to uint16 0 .. 65535
      hexText += sPrefix + ("000"+sample.toString(16)).slice(-4) + sSuffix;
      if (newline) {
        if ((i % newline) == newline-1) {
          hexText += "\r\n";
        }
      }
    }
    hexText += "\r\n};"
    document.getElementById("ed_output").value = hexText;		  	
  }

  function readFileAsArray(file) {
    var reader = new FileReader();
    reader.onload = function(){
      var arr = reader.result;
      samples = new Uint16Array(arr);	  
    };
    reader.readAsArrayBuffer(file);    
  }    

  var openFile = function(event) {
    var input = event.target;
    readFileAsArray(input.files[0]);
  };   
</script>

</body>
</html>