diff --git a/examples/javascript/mic.js b/examples/javascript/mic.js new file mode 100644 index 00000000..f77e2cf9 --- /dev/null +++ b/examples/javascript/mic.js @@ -0,0 +1,61 @@ +/*jslint node:true, vars:true, bitwise:true, unparam:true */ +/*jshint unused:true */ +/*global */ +/* +* Author: Zion Orent +* Copyright (c) 2014 Intel Corporation. +* +* Permission is hereby granted, free of charge, to any person obtaining +* a copy of this software and associated documentation files (the +* "Software"), to deal in the Software without restriction, including +* without limitation the rights to use, copy, modify, merge, publish, +* distribute, sublicense, and/or sell copies of the Software, and to +* permit persons to whom the Software is furnished to do so, subject to +* the following conditions: +* +* The above copyright notice and this permission notice shall be +* included in all copies or substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +var upmMicrophone = require("jsupm_mic"); + +// Attach microphone to analog port A0 +var myMic = new upmMicrophone.Microphone(0); + +var threshContext = new upmMicrophone.thresholdContext; +threshContext.averageReading = 0; +threshContext.runningAverage = 0; +threshContext.averagedOver = 2; + +var is_running = false; +// Infinite loop, ends when script is cancelled +// Repeatedly, take a sample every 2 microseconds; +// find the average of 128 samples; and +// print a running graph of the averages +while(1) +{ + var buffer = new upmMicrophone.uint16Array(128); + var len = myMic.getSampledWindow(2, 128, buffer); + if (len) + { + var thresh = myMic.findThreshold(threshContext, 30, buffer, len); + myMic.printGraph(threshContext); + if (thresh) + console.log("Threshold is " + thresh); + } +} + +// Print message when exiting +process.on('SIGINT', function() +{ + console.log("Exiting..."); + process.exit(0); +}); diff --git a/src/mic/jsupm_mic.i b/src/mic/jsupm_mic.i index c6fcad3d..6036ee52 100644 --- a/src/mic/jsupm_mic.i +++ b/src/mic/jsupm_mic.i @@ -2,6 +2,12 @@ %include "../upm.i" %include "../carrays_uint16_t.i" +%typemap(in) uint16_t * { + void *argp = 0 ; + int res = SWIG_ConvertPtr($input, &argp,SWIGTYPE_p_uint16Array, 0 | 0 ); + $1 = (uint16_t *)(argp); +} + %{ #include "mic.h" %}