1 files changed, 94 insertions, 0 deletions
diff --git a/background.js b/background.js
new file mode 100644
index 0000000..bc33384
--- /dev/null
+++ b/background.js
@@ -0,0 +1,94 @@
+/* global chrome, MediaRecorder, FileReader */
+
+let recorder = null;
+let filename = null;
+chrome.runtime.onConnect.addListener(port => {
+
+  port.onMessage.addListener(msg => {
+    console.log(msg);
+    switch (msg.type) {
+      case 'SET_EXPORT_PATH':
+        filename = msg.filename
+        break
+      case 'REC_STOP':
+        recorder.stop()    
+        break
+      case 'REC_CLIENT_PLAY':
+        if(recorder){
+          return
+        }
+        const tab = port.sender.tab
+        tab.url = msg.data.url
+        chrome.desktopCapture.chooseDesktopMedia(['tab', 'audio'], streamId => {
+          // Get the stream
+          navigator.webkitGetUserMedia({
+            audio: {
+              mandatory: {
+                chromeMediaSource: 'system'
+              }
+            },
+            video: {
+              mandatory: {
+                chromeMediaSource: 'desktop',
+                chromeMediaSourceId: streamId,
+                minWidth: 1280,
+                maxWidth: 1280,
+                minHeight: 720,
+                maxHeight: 720,
+                minFrameRate: 60,
+              }
+            }
+          }, stream => {
+            var chunks=[];
+            recorder = new MediaRecorder(stream, {
+                videoBitsPerSecond: 2500000,
+                ignoreMutedMedia: true,
+                mimeType: 'video/webm'
+            });
+            recorder.ondataavailable = function (event) {
+                if (event.data.size > 0) {
+                    chunks.push(event.data);
+                }
+            };
+
+            recorder.onstop = function () {
+                var superBuffer = new Blob(chunks, {
+                    type: 'video/webm'
+                });
+
+                var url = URL.createObjectURL(superBuffer);
+                // var a = document.createElement('a');
+                // document.body.appendChild(a);
+                // a.style = 'display: none';
+                // a.href = url;
+                // a.download = 'test.webm';
+                // a.click();
+
+              chrome.downloads.download({
+                url: url,
+                filename: filename
+              }, ()=>{
+              });
+            }
+            setTimeout(function(){
+              recorder.start();
+            }, 3000)
+          }, error => console.log('Unable to get user media', error))
+        })
+        break
+      default:
+        console.log('Unrecognized message', msg)
+    }
+  })
+
+  chrome.downloads.onChanged.addListener(function(delta) {
+    if (!delta.state ||(delta.state.current != 'complete')) {
+      return;
+    }
+    try{
+      port.postMessage({downloadComplete: true})
+    }
+    catch(e){}
+  });
+
+})