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node_modules/node-red-contrib-browser-utils/CONTRIBUTING.md

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+# CONTRIBUTING
+
+## Code
+
+* The code should follow Watson Developer Cloud [coding guidances](https://github.com/watson-developer-cloud/api-guidelines)
+* The code should follow: https://github.com/airbnb/javascript
+* 2 spaces identation
+* `snake_case`
+
+## Issues
+
+If you encounter an issue with using the labs here, you are welcome to submit
+a [bug report](https://github.com/node-red-contrib-utils/node-red-contrib-media-utils/issues).
+Before that, please search for similar issues. It's possible somebody has already encountered this issue.
+
+## Pull Requests
+
+If you want to contribute to the repository, follow these steps:
+
+1. Fork the repo.
+2. Develop code changes.
+5. Commit your changes.
+6. Push to your fork and submit a pull request.
+
+### Getting started
+
+* Install [Node-RED](http://nodered.org/)
+* Fork [this repo](https://github.com/node-red-contrib-utils/node-red-contrib-media-utils)
+* Clone the project
+* Create an npm link to your forked project
+  * Within the cloned directory, run `npm link`
+  * Within the Node-RED directory, run `npm link node-red-contrib-media-utils`
+* Run Node-RED
+
+Now you should have the media nodes installed in your local palette, allowing you to work on your project locally.
+
+### Modify or Create new nodes
+
+If you want to add a node, create a folder using the same naming convention.
+
+Please refer to the [Node-RED](http://nodered.org/docs/creating-nodes/) documentation.

node_modules/node-red-contrib-browser-utils/README.md

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+# Node-RED Contrib Browser Utils
+
+[Node-RED](http://nodered.org) nodes for browser functionality such as file upload, camera & microphone.
+
+## Install
+
+
+Run the following command in the root directory of your Node-RED install:
+
+    npm install node-red-contrib-browser-utils
+
+## Usage
+
+### Camera
+
+The browser takes a picture with the default camera when the button next to the node is clicked. The node outputs it as a PNG buffer.
+
+The `camera` node has a 2000ms delay to prevent slow camera driver startup causing an issue in some browsers.
+
+
+###  Microphone
+
+The browser starts recording after the button next to the node is clicked and stops it when the button is clicked again. The node outputs it as a WAV buffer.
+
+
+### File upload
+
+The node accepts a file to be uploaded and outputs it as a buffer.
+
+
+## Contributing
+
+For simple typos and fixes please just raise an issue pointing out our mistakes. If you need to raise a pull request please read our [contribution guidelines](https://github.com/node-red-contrib-utils/node-red-contrib-browser-utils/blob/master/CONTRIBUTING.md) before doing so.
+
+## Copyright and license
+
+Copyright 2014, 2016, 2019 IBM Corp. under the Apache 2.0 license.

node_modules/node-red-contrib-browser-utils/camera/camera.html

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+<!--
+  Copyright 2013, 2016, 2019 IBM Corp.
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+  http://www.apache.org/licenses/LICENSE-2.0
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+
+<script type="text/x-red" data-template-name="camera">
+    <div class="form-row">
+        <label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
+        <input type="text" id="node-input-name" placeholder="Camera">
+    </div>
+</script>
+
+<script type="text/x-red" data-help-name="camera">
+    <p>A simple camera node to capture the current image from the device webcam</p>
+    <p>Usage:</p>
+    <ol>
+        <li>Add the camera node to your flow</li>
+        <li>Click the <code>button</code> capture an image from the webcam</li>
+    </ol>
+    <p>The <code>png</code> image is sent as the <code>msg.payload</code> object</p>
+    <p>Supported browsers</p>
+    <ul>
+      <li>Chrome</li>
+      <li>Firefox</li>
+    </ul>
+</script>
+
+
+<script type="text/javascript">
+    (function() {
+        navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
+        window.URL = window.URL || window.webkitURL || window.mozURL || window.msURL;
+
+        window.video = document.createElement('video')
+        window.canvas = document.createElement('canvas')
+        canvas.style.display = 'none'
+        canvas.style.display = 'none'
+        var id
+
+        function onCanPlay(evt) {
+          video.removeEventListener('canplay', onCanPlay, false)
+          var width   = 320
+          var height  = video.videoHeight / (video.videoWidth / width)
+
+          if (isNaN(height)) {
+            height = width / (4 / 3)
+          }
+
+          setTimeout(function(evt) {
+
+            video.setAttribute('width', width)
+            video.setAttribute('height', height)
+            canvas.setAttribute('width', width)
+            canvas.setAttribute('height', height)
+
+            var ctx = canvas.getContext('2d')
+            ctx.drawImage(video, 0, 0, width, height)
+
+            canvas.toBlob(function(blob) {
+              uploadRecord(id, blob)
+            })
+          }, 2000)
+        }
+
+        function onStreamReady(id, stream) {
+          // As of Chrome 71 createObjectURL is dropped so try direct
+          // access first
+          // https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/srcObject
+          try {
+            video.srcObject = stream;
+          } catch (error) {
+            video.src = window.URL.createObjectURL(stream)
+          }
+
+          video.addEventListener('canplay', onCanPlay, false)
+
+          video.play()
+        }
+
+        function onVideoPlaying(id, evt) {
+          canvas.style.height = video.clientHeight + 'px'
+          canvas.style.width = video.clientWidth + 'px'
+
+          var ctx = canvas.getContext('2d')
+          ctx.drawImage(video, 0, 0)
+
+          canvas.toBlob(function(blob) {
+            uploadRecord(id, blob)
+          })
+        }
+
+        function setCameraStatus(record, id) {
+          $.getJSON('node-red-camera/status', {status: record, id: id})
+            .done(function () {})
+            .fail(function (err) {
+              console.log(err);
+            })
+            .always(function () {});
+        }
+
+        function takeSnapshot(id) {
+          const constraints = {video : true, audio : false};
+          navigator.mediaDevices.getUserMedia(constraints)
+            .then(function(stream) {
+              setCameraStatus(true, id)
+              onStreamReady(id, stream)
+            })
+            .catch(function(err) {
+                window.alert('Your browser does not support the camera node')
+                console.log(err)
+            })
+        }
+
+        function uploadRecord(id, blob) {
+            var xhr = new XMLHttpRequest()
+            xhr.open('POST', 'node-red-camera/' + id, true)
+            xhr.send(blob)
+        }
+
+        RED.nodes.registerType('camera', {
+            category: 'input',
+            defaults: {
+                name: {value: ''}
+            },
+            color: 'rgb(215, 201, 194)',
+            inputs: 0,
+            outputs: 1,
+            icon: 'camera.png',
+            paletteLabel: 'camera',
+            label: function() {
+                return this.name || 'camera';
+            },
+            labelStyle: function() {
+                return this.name ? 'node_label_italic' : '';
+            },
+            button: {
+                onclick: function(){
+                    id = this.id
+                    takeSnapshot(id)
+                }
+            }
+        });
+    })();
+</script>

node_modules/node-red-contrib-browser-utils/camera/camera.js

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+/**
+ * Copyright 2013, 2016 IBM Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the 'License');
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an 'AS IS' BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+var bodyParser = require('body-parser')
+
+module.exports = function (RED) {
+
+  function Node (config) {
+    RED.nodes.createNode(this, config);
+    var node = this;
+    var requestSize = '50mb';
+
+
+    RED.httpAdmin.get('/node-red-camera/status', function (req, res) {
+      var n = RED.nodes.getNode(req.query.id)
+      var status = {};
+      if ('true' == req.query.status) {
+        status = {fill:'red', shape:'dot', text:'taking picture...'}
+      }
+      if (n) {
+        n.status(status);
+      }
+      res.json({});
+    });
+
+
+    RED.httpAdmin.post('/node-red-camera/:id', bodyParser.raw({ type: '*/*', limit: requestSize }), function(req,res) {
+
+        var node = RED.nodes.getNode(req.params.id)
+
+        if (node != null) {
+            try {
+                node.receive({payload: req.body})
+                node.status({})
+                res.sendStatus(200)
+            } catch(err) {
+                node.status({fill:'red', shape:'dot', text:'upload failed'});
+                res.sendStatus(500)
+                node.error(RED._("upload-camera.failed", { error: err.toString() }))
+            }
+        } else {
+            res.status(404).send("no node found")
+        }
+    })
+
+    this.on('input', function (msg) {
+      if(msg.payload !== '') {
+        node.send(msg)
+      }
+    })
+  }
+  RED.nodes.registerType('camera', Node)
+};

node_modules/node-red-contrib-browser-utils/fileinject/fileinject.html

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+<!--
+  Copyright 2013, 2016, 2018, 2021 IBM Corp.
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+  http://www.apache.org/licenses/LICENSE-2.0
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+
+<script type="text/x-red" data-template-name="fileinject">
+    <div class="form-row">
+        <label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
+        <input type="text" id="node-input-name" placeholder="File Inject">
+    </div>
+</script>
+
+<script type="text/x-red" data-help-name="fileinject">
+    <p>Simple file inject node</p>
+    <p>Press the button to inject a file directly to the flow.</p>
+    <p>File will be sent as part of the <code>msg.payload</code> object.</p>
+</script>
+
+<script type="text/javascript">
+    (function() {
+
+        var id
+        var inputElement = document.createElement('input')
+        inputElement.setAttribute('type', 'file')
+        inputElement.addEventListener('change', injectFile)
+        document.body.appendChild(inputElement)
+
+        function simulate(element, eventName){
+            var options = extend(defaultOptions, arguments[2] || {});
+            var oEvent, eventType = null;
+
+            for (var name in eventMatchers){
+                if (eventMatchers[name].test(eventName)) { eventType = name; break; }
+            }
+
+            if (!eventType)
+                throw new SyntaxError('Only HTMLEvents and MouseEvents interfaces are supported');
+
+            if (document.createEvent){
+                oEvent = document.createEvent(eventType);
+                if (eventType == 'HTMLEvents'){
+                    oEvent.initEvent(eventName, options.bubbles, options.cancelable);
+                }
+                else{
+                    oEvent.initMouseEvent(eventName, options.bubbles, options.cancelable, document.defaultView,
+                    options.button, options.pointerX, options.pointerY, options.pointerX, options.pointerY,
+                    options.ctrlKey, options.altKey, options.shiftKey, options.metaKey, options.button, element);
+                }
+                element.dispatchEvent(oEvent);
+            }
+            else{
+                options.clientX = options.pointerX;
+                options.clientY = options.pointerY;
+                var evt = document.createEventObject();
+                oEvent = extend(evt, options);
+                element.fireEvent('on' + eventName, oEvent);
+            }
+            return element;
+        }
+
+        function extend(destination, source) {
+            for (var property in source)
+              destination[property] = source[property];
+            return destination;
+        }
+
+        var eventMatchers = {
+            'HTMLEvents': /^(?:load|unload|abort|error|select|change|submit|reset|focus|blur|resize|scroll)$/,
+            'MouseEvents': /^(?:click|dblclick|mouse(?:down|up|over|move|out))$/
+        }
+        var defaultOptions = {
+            pointerX: 0,
+            pointerY: 0,
+            button: 0,
+            ctrlKey: false,
+            altKey: false,
+            shiftKey: false,
+            metaKey: false,
+            bubbles: true,
+            cancelable: true
+        }
+
+        function triggerClick(event) {
+          simulate(inputElement, 'click')
+        }
+
+        function setNodeStatus(uploading, id) {
+          $.getJSON('node-red-fileinject/status', {status: uploading, id: id})
+            .done(function () {})
+            .fail(function (err) {
+              console.log(err);
+            })
+            .always(function () {});
+        }
+
+        function injectFile() {
+            var blob;
+            var currentInput = this
+
+            if(currentInput.files.length !== 0) {
+              var file = currentInput.files[0]
+              var reader = new FileReader()
+
+              setNodeStatus(true, id)
+
+              reader.addEventListener('load', function(onLoadEvent) {
+                  var filename = file.name
+                  blob = new Blob([onLoadEvent.target.result], {
+                  type: (file.type=='')?'application/octet-stream':file.type
+                });
+
+                currentInput.value = ''
+
+                var xhr = new XMLHttpRequest()
+                xhr.open('POST', 'node-red-fileinject/' + id, true)
+                xhr.setRequestHeader('x-filename', filename);
+                xhr.send(blob)
+              })
+
+              reader.readAsArrayBuffer(file)
+            } else {
+              return
+            }
+        }
+
+        RED.nodes.registerType('fileinject', {
+            category: 'input',
+            defaults: {
+                name: {value: ''}
+            },
+            color: 'rgb(254, 245, 136)',
+            inputs: 0,
+            outputs: 1,
+            icon: 'fileinject.png',
+            paletteLabel: 'file inject',
+            label: function() {
+                return this.name || 'file inject';
+            },
+            labelStyle: function() {
+                return this.name ? 'node_label_italic' : '';
+            },
+            button: {
+                onclick: function(evt){
+                  id = this.id
+                  triggerClick(evt)
+                }
+            }
+        });
+    })();
+</script>

node_modules/node-red-contrib-browser-utils/fileinject/fileinject.js

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+/**
+ * Copyright 2013, 2016, 2018, 2021 IBM Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the 'License');
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an 'AS IS' BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+var bodyParser = require('body-parser')
+
+module.exports = function (RED) {
+  var requestSize = '50mb'
+
+  function Node (config) {
+    RED.nodes.createNode(this, config);
+    var node = this;
+
+    RED.httpAdmin.get('/node-red-fileinject/status', function (req, res) {
+      var n = RED.nodes.getNode(req.query.id)
+      var status = {};
+      if ('true' == req.query.status) {
+        status = {fill:'red', shape:'dot', text:'sending file...'}
+      }
+      if (n) {
+        n.status(status);
+      }
+      res.json({});
+    });
+
+
+    RED.httpAdmin.post('/node-red-fileinject/:id', bodyParser.raw({ type: '*/*', limit: requestSize }), function(req,res) {
+
+        var node = RED.nodes.getNode(req.params.id)
+
+        if (node != null) {
+            try {
+                node.receive({payload: req.body, filename: req.headers["x-filename"], mimetype: req.headers["content-type"]})
+                node.status({})
+                res.sendStatus(200)
+            } catch(err) {
+                res.sendStatus(500)
+                node.error(RED._("inject-file.failed", { error: err.toString() }))
+            }
+        } else {
+            res.status(404).send("no node found")
+        }
+    })
+
+    this.on('input', function (msg) {
+      if(msg.payload !== '') {
+        node.send(msg)
+      }
+    })
+  }
+  RED.nodes.registerType('fileinject', Node)
+};

node_modules/node-red-contrib-browser-utils/microphone/microphone.html

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+<!--
+  Copyright 2013, 2016, 2018, 2019 IBM Corp.
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+  http://www.apache.org/licenses/LICENSE-2.0
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+
+<script type="text/x-red" data-template-name="microphone">
+    <div class="form-row">
+        <label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
+        <input type="text" id="node-input-name" placeholder="Microphone">
+    </div>
+</script>
+
+<script type="text/x-red" data-help-name="microphone">
+    <p>A simple microphone node to record audio directly from the web browser</p>
+    <p>Usage:</p>
+    <ol>
+        <li>Note - you must be using <code>https</code> to record</li>
+        <li>Click the <code>button</code> to start recording</li>
+        <li>Click the <code>button</code> again to stop recording</li>
+    </ol>
+    <p>The recorded audio is stored in the nodes <code>msg.payload</code> object</p>
+    <p>To see if the microphone node is supported in your browser check <a href="http://caniuse.com/#feat=stream" target="_blank">this</a> page</p>
+    <p>Supported output formats:</p>
+    <ul>
+        <li>WAV</li>
+    </ul>
+</script>
+
+<script type="text/javascript">
+    (function() {
+        navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
+        window.AudioContext = window.AudioContext || window.webkitAudioContext || window.mozAudioContext || window.oAudioContext || window.msAudioContext;;
+
+        window.URL = window.URL || window.webkitURL || window.mozURL || window.msURL;
+
+        const MICSTATUS = {
+            OFF : '1',
+            ON  : '2',
+            CONTEXTERROR : '4'
+        }
+
+        $.getScript( 'microphone/js/recorder.js' )
+          .done(function( script, textStatus ) {
+            // script loaded, do nothing
+          })
+          .fail(function( jqxhr, settings, exception ) {
+            console.log('FAILED to load recorder script: '+exception)
+        });
+
+        var instances = {}
+        var audio_context = new AudioContext
+
+        function checkAudioContextState() {
+            var p = new Promise(function resolver(resolve, reject) {
+              if (audio_context.state && 'running' !== audio_context.state && audio_context.resume) {
+                  audio_context.resume().then(() => {
+                      resolve()
+                  })
+              } else {
+                resolve()
+              }
+            });
+            return p
+        }
+
+        function startRecording(id, stream) {
+            checkAudioContextState()
+            .then(() => {
+                var input = audio_context.createMediaStreamSource(stream)
+                instances[id] = new Recorder(input)
+                instances[id] && instances[id].record()
+            })
+            .catch(() => {
+                console.log('Audio Context Error')
+                setMicStatus(MICSTATUS.CONTEXTERROR, id)
+            })
+        }
+
+        function stopRecording(id, callback) {
+            if(!instances[id]) {
+                return
+            }
+
+            instances[id].stop()
+
+            instances[id].exportWAV(function(blob) {
+                instances[id].clear()
+                instances[id] = null
+
+                callback & callback(id, blob)
+            })
+
+            setMicStatus(MICSTATUS.OFF, id);
+        }
+
+        function getRecorder(id) {
+          const constraints = {video : false, audio : true};
+          navigator.mediaDevices.getUserMedia(constraints)
+            .then(function(stream) {
+              setMicStatus(MICSTATUS.ON, id)
+              startRecording(id, stream)
+            })
+            .catch(function(err) {
+                window.alert('Your browser does not support audio recording')
+                console.log(err)
+            })
+        }
+
+
+        function getRecorderXX(id) {
+            if(!navigator.getUserMedia) {
+                window.alert('Your browser does not support audio recording')
+                return
+            }
+
+            navigator.getUserMedia({audio: true},
+              function(stream){
+                setMicStatus(MICSTATUS.ON, id)
+                startRecording(id, stream)
+              },
+              function(e) {
+                window.alert(e.message)
+            })
+        }
+
+        function uploadRecord(id, blob) {
+            var xhr = new XMLHttpRequest()
+            xhr.open('POST', 'node-red-microphone/' + id, true)
+            xhr.send(blob)
+        }
+
+        function setMicStatus(record, id) {
+          $.getJSON('node-red-microphone/status', {status: record, id: id})
+            .done(function () {})
+            .fail(function (err) {
+              console.log(err);
+            })
+            .always(function () {});
+        }
+
+        RED.nodes.registerType('microphone', {
+            category: 'input',
+            defaults: {
+                name: {value: ''}
+            },
+            color: 'rgb(204, 230, 171)',
+            inputs: 0,
+            outputs: 1,
+            icon: 'microphone.png',
+            paletteLabel: 'microphone',
+            label: function() {
+                return this.name || 'microphone';
+            },
+            labelStyle: function() {
+                return this.name ? 'node_label_italic' : '';
+            },
+            button: {
+                onclick: function(){
+                    if(instances[this.id]) {
+                        stopRecording(this.id, uploadRecord)
+                    } else {
+                        getRecorder(this.id)
+                    }
+                }
+            }
+        });
+    })();
+</script>

node_modules/node-red-contrib-browser-utils/microphone/microphone.js

@@ -0,0 +1,84 @@
+/**
+ * Copyright 2013, 2016 IBM Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the 'License');
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an 'AS IS' BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+var bodyParser = require('body-parser')
+
+module.exports = function (RED) {
+  var requestSize = '50mb'
+  var requestType = 'audio/wav'
+
+  const MICSTATUS = {
+      OFF : '1',
+      ON  : '2',
+      CONTEXTERROR : '4'
+  }
+
+  function Node (config) {
+    RED.nodes.createNode(this, config);
+    var node = this;
+
+    RED.httpAdmin.get('/node-red-microphone/status', function (req, res) {
+      var n = RED.nodes.getNode(req.query.id)
+      var status = {};
+      switch(req.query.status) {
+      case MICSTATUS.ON :
+          status = {fill:'red', shape:'dot', text:'recording...'}
+          break;
+      case MICSTATUS.CONTEXTERROR :
+          status = {fill:'red', shape:'dot', text:'error resuming audio context'}
+          break;
+      }
+      if (n) {
+        n.status(status);
+      }
+      res.json({});
+    });
+
+    RED.httpAdmin.post('/node-red-microphone/:id', bodyParser.raw({ type: requestType, limit: requestSize }), function(req,res) {
+
+        var node = RED.nodes.getNode(req.params.id)
+
+        if (node != null) {
+            try {
+                node.receive({payload: req.body})
+                res.sendStatus(200)
+            } catch(err) {
+                node.status({fill:'red', shape:'dot', text:'upload failed'});
+                res.sendStatus(500)
+                node.error(RED._("upload-microphone.failed", { error: err.toString() }))
+            }
+        } else {
+            res.status(404).send("no node found")
+        }
+    })
+
+    this.on('input', function (msg) {
+      if(msg.payload !== '') {
+        node.send(msg)
+      }
+    })
+  }
+  RED.nodes.registerType('microphone', Node)
+
+  RED.httpAdmin.get('/microphone/js/*', function(req, res){
+    var options = {
+        root: __dirname + '/static/',
+        dotfiles: 'deny'
+    };
+
+    res.sendFile(req.params[0], options);
+  });
+};

node_modules/node-red-contrib-browser-utils/microphone/static/recorder.js

@@ -0,0 +1,357 @@
+(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Recorder = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+"use strict";
+
+module.exports = require("./recorder").Recorder;
+
+},{"./recorder":2}],2:[function(require,module,exports){
+'use strict';
+
+var _createClass = (function () {
+    function defineProperties(target, props) {
+        for (var i = 0; i < props.length; i++) {
+            var descriptor = props[i];descriptor.enumerable = descriptor.enumerable || false;descriptor.configurable = true;if ("value" in descriptor) descriptor.writable = true;Object.defineProperty(target, descriptor.key, descriptor);
+        }
+    }return function (Constructor, protoProps, staticProps) {
+        if (protoProps) defineProperties(Constructor.prototype, protoProps);if (staticProps) defineProperties(Constructor, staticProps);return Constructor;
+    };
+})();
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.Recorder = undefined;
+
+var _inlineWorker = require('inline-worker');
+
+var _inlineWorker2 = _interopRequireDefault(_inlineWorker);
+
+function _interopRequireDefault(obj) {
+    return obj && obj.__esModule ? obj : { default: obj };
+}
+
+function _classCallCheck(instance, Constructor) {
+    if (!(instance instanceof Constructor)) {
+        throw new TypeError("Cannot call a class as a function");
+    }
+}
+
+var Recorder = exports.Recorder = (function () {
+    function Recorder(source, cfg) {
+        var _this = this;
+
+        _classCallCheck(this, Recorder);
+
+        this.config = {
+            bufferLen: 4096,
+            numChannels: 2,
+            mimeType: 'audio/wav'
+        };
+        this.recording = false;
+        this.callbacks = {
+            getBuffer: [],
+            exportWAV: []
+        };
+
+        Object.assign(this.config, cfg);
+        this.context = source.context;
+        this.node = (this.context.createScriptProcessor || this.context.createJavaScriptNode).call(this.context, this.config.bufferLen, this.config.numChannels, this.config.numChannels);
+
+        this.node.onaudioprocess = function (e) {
+            if (!_this.recording) return;
+
+            var buffer = [];
+            for (var channel = 0; channel < _this.config.numChannels; channel++) {
+                buffer.push(e.inputBuffer.getChannelData(channel));
+            }
+            _this.worker.postMessage({
+                command: 'record',
+                buffer: buffer
+            });
+        };
+
+        source.connect(this.node);
+        this.node.connect(this.context.destination); //this should not be necessary
+
+        var self = {};
+        this.worker = new _inlineWorker2.default(function () {
+            var recLength = 0,
+                recBuffers = [],
+                sampleRate = undefined,
+                numChannels = undefined;
+
+            self.onmessage = function (e) {
+                switch (e.data.command) {
+                    case 'init':
+                        init(e.data.config);
+                        break;
+                    case 'record':
+                        record(e.data.buffer);
+                        break;
+                    case 'exportWAV':
+                        exportWAV(e.data.type);
+                        break;
+                    case 'getBuffer':
+                        getBuffer();
+                        break;
+                    case 'clear':
+                        clear();
+                        break;
+                }
+            };
+
+            function init(config) {
+                sampleRate = config.sampleRate;
+                numChannels = config.numChannels;
+                initBuffers();
+            }
+
+            function record(inputBuffer) {
+                for (var channel = 0; channel < numChannels; channel++) {
+                    recBuffers[channel].push(inputBuffer[channel]);
+                }
+                recLength += inputBuffer[0].length;
+            }
+
+            function exportWAV(type) {
+                var buffers = [];
+                for (var channel = 0; channel < numChannels; channel++) {
+                    buffers.push(mergeBuffers(recBuffers[channel], recLength));
+                }
+                var interleaved = undefined;
+                if (numChannels === 2) {
+                    interleaved = interleave(buffers[0], buffers[1]);
+                } else {
+                    interleaved = buffers[0];
+                }
+                var dataview = encodeWAV(interleaved);
+                var audioBlob = new Blob([dataview], { type: type });
+
+                self.postMessage({ command: 'exportWAV', data: audioBlob });
+            }
+
+            function getBuffer() {
+                var buffers = [];
+                for (var channel = 0; channel < numChannels; channel++) {
+                    buffers.push(mergeBuffers(recBuffers[channel], recLength));
+                }
+                self.postMessage({ command: 'getBuffer', data: buffers });
+            }
+
+            function clear() {
+                recLength = 0;
+                recBuffers = [];
+                initBuffers();
+            }
+
+            function initBuffers() {
+                for (var channel = 0; channel < numChannels; channel++) {
+                    recBuffers[channel] = [];
+                }
+            }
+
+            function mergeBuffers(recBuffers, recLength) {
+                var result = new Float32Array(recLength);
+                var offset = 0;
+                for (var i = 0; i < recBuffers.length; i++) {
+                    result.set(recBuffers[i], offset);
+                    offset += recBuffers[i].length;
+                }
+                return result;
+            }
+
+            function interleave(inputL, inputR) {
+                var length = inputL.length + inputR.length;
+                var result = new Float32Array(length);
+
+                var index = 0,
+                    inputIndex = 0;
+
+                while (index < length) {
+                    result[index++] = inputL[inputIndex];
+                    result[index++] = inputR[inputIndex];
+                    inputIndex++;
+                }
+                return result;
+            }
+
+            function floatTo16BitPCM(output, offset, input) {
+                for (var i = 0; i < input.length; i++, offset += 2) {
+                    var s = Math.max(-1, Math.min(1, input[i]));
+                    output.setInt16(offset, s < 0 ? s * 0x8000 : s * 0x7FFF, true);
+                }
+            }
+
+            function writeString(view, offset, string) {
+                for (var i = 0; i < string.length; i++) {
+                    view.setUint8(offset + i, string.charCodeAt(i));
+                }
+            }
+
+            function encodeWAV(samples) {
+                var buffer = new ArrayBuffer(44 + samples.length * 2);
+                var view = new DataView(buffer);
+
+                /* RIFF identifier */
+                writeString(view, 0, 'RIFF');
+                /* RIFF chunk length */
+                view.setUint32(4, 36 + samples.length * 2, true);
+                /* RIFF type */
+                writeString(view, 8, 'WAVE');
+                /* format chunk identifier */
+                writeString(view, 12, 'fmt ');
+                /* format chunk length */
+                view.setUint32(16, 16, true);
+                /* sample format (raw) */
+                view.setUint16(20, 1, true);
+                /* channel count */
+                view.setUint16(22, numChannels, true);
+                /* sample rate */
+                view.setUint32(24, sampleRate, true);
+                /* byte rate (sample rate * block align) */
+                view.setUint32(28, sampleRate * 4, true);
+                /* block align (channel count * bytes per sample) */
+                view.setUint16(32, numChannels * 2, true);
+                /* bits per sample */
+                view.setUint16(34, 16, true);
+                /* data chunk identifier */
+                writeString(view, 36, 'data');
+                /* data chunk length */
+                view.setUint32(40, samples.length * 2, true);
+
+                floatTo16BitPCM(view, 44, samples);
+
+                return view;
+            }
+        }, self);
+
+        this.worker.postMessage({
+            command: 'init',
+            config: {
+                sampleRate: this.context.sampleRate,
+                numChannels: this.config.numChannels
+            }
+        });
+
+        this.worker.onmessage = function (e) {
+            var cb = _this.callbacks[e.data.command].pop();
+            if (typeof cb == 'function') {
+                cb(e.data.data);
+            }
+        };
+    }
+
+    _createClass(Recorder, [{
+        key: 'record',
+        value: function record() {
+            this.recording = true;
+        }
+    }, {
+        key: 'stop',
+        value: function stop() {
+            this.recording = false;
+        }
+    }, {
+        key: 'clear',
+        value: function clear() {
+            this.worker.postMessage({ command: 'clear' });
+        }
+    }, {
+        key: 'getBuffer',
+        value: function getBuffer(cb) {
+            cb = cb || this.config.callback;
+            if (!cb) throw new Error('Callback not set');
+
+            this.callbacks.getBuffer.push(cb);
+
+            this.worker.postMessage({ command: 'getBuffer' });
+        }
+    }, {
+        key: 'exportWAV',
+        value: function exportWAV(cb, mimeType) {
+            mimeType = mimeType || this.config.mimeType;
+            cb = cb || this.config.callback;
+            if (!cb) throw new Error('Callback not set');
+
+            this.callbacks.exportWAV.push(cb);
+
+            this.worker.postMessage({
+                command: 'exportWAV',
+                type: mimeType
+            });
+        }
+    }], [{
+        key: 'forceDownload',
+        value: function forceDownload(blob, filename) {
+            var url = (window.URL || window.webkitURL).createObjectURL(blob);
+            var link = window.document.createElement('a');
+            link.href = url;
+            link.download = filename || 'output.wav';
+            var click = document.createEvent("Event");
+            click.initEvent("click", true, true);
+            link.dispatchEvent(click);
+        }
+    }]);
+
+    return Recorder;
+})();
+
+exports.default = Recorder;
+
+},{"inline-worker":3}],3:[function(require,module,exports){
+"use strict";
+
+module.exports = require("./inline-worker");
+},{"./inline-worker":4}],4:[function(require,module,exports){
+(function (global){
+"use strict";
+
+var _createClass = (function () { function defineProperties(target, props) { for (var key in props) { var prop = props[key]; prop.configurable = true; if (prop.value) prop.writable = true; } Object.defineProperties(target, props); } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
+
+var _classCallCheck = function (instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } };
+
+var WORKER_ENABLED = !!(global === global.window && global.URL && global.Blob && global.Worker);
+
+var InlineWorker = (function () {
+  function InlineWorker(func, self) {
+    var _this = this;
+
+    _classCallCheck(this, InlineWorker);
+
+    if (WORKER_ENABLED) {
+      var functionBody = func.toString().trim().match(/^function\s*\w*\s*\([\w\s,]*\)\s*{([\w\W]*?)}$/)[1];
+      var url = global.URL.createObjectURL(new global.Blob([functionBody], { type: "text/javascript" }));
+
+      return new global.Worker(url);
+    }
+
+    this.self = self;
+    this.self.postMessage = function (data) {
+      setTimeout(function () {
+        _this.onmessage({ data: data });
+      }, 0);
+    };
+
+    setTimeout(function () {
+      func.call(self);
+    }, 0);
+  }
+
+  _createClass(InlineWorker, {
+    postMessage: {
+      value: function postMessage(data) {
+        var _this = this;
+
+        setTimeout(function () {
+          _this.self.onmessage({ data: data });
+        }, 0);
+      }
+    }
+  });
+
+  return InlineWorker;
+})();
+
+module.exports = InlineWorker;
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{}]},{},[1])(1)
+});

node_modules/node-red-contrib-browser-utils/package.json

@@ -0,0 +1,51 @@
+{
+  "name": "node-red-contrib-browser-utils",
+  "version": "0.0.11",
+  "description": "A collection of Node-RED nodes for browser interaction",
+  "dependencies": {
+    "node-red-contrib-play-audio": "^2.5.0",
+    "body-parser": "^1.20.0"
+  },
+  "license": "Apache-2.0",
+  "keywords": [
+    "node-red",
+    "microphone",
+    "camera",
+    "upload",
+    "bluemix",
+    "watson"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/ibm-early-programs/node-red-contrib-browser-utils"
+  },
+  "contributors": [
+    {
+      "name": "Chris Parsons",
+      "email": "christopherkparsons@gmail.com"
+    },
+    {
+      "name": "Yacine Rezgui",
+      "email": "rezgui.y@gmail.com"
+    },
+    {
+      "name": "Gibson Fahnestock",
+      "email": "gibfahn@gmail.com"
+    },
+    {
+      "name": "Anna Thomas",
+      "email": "annat21@live.co.uk"
+    },
+    {
+      "name": "Soheel Chughtai",
+      "email": "soheel_chughtai@uk.ibm.com"
+    }
+  ],
+  "node-red": {
+    "nodes": {
+      "fileinject": "./fileinject/fileinject.js",
+      "microphone": "./microphone/microphone.js",
+      "camera": "./camera/camera.js"
+    }
+  }
+}