Added recordAsMP3 functionality

petrix · Jun 19, 2015 · 6afb843 · 6afb843
1 parent e4793b4
commit 6afb843
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Showing 6 changed files with 250 additions and 145 deletions.
diff --git a/README.md b/README.md
@@ -88,6 +88,10 @@ Example:
 - **bufferLen** - The length of the buffer that the internal JavaScriptNode uses to capture the audio. Can be tweaked if experiencing performance issues. Defaults to 4096.
 - **callback** - A default callback to be used with `exportWAV`.
 - **type** - The type of the Blob generated by `exportWAV`. Defaults to 'audio/wav'.
+- **recordAsMP3** - Binary: if true - will continuously encode the stream into mp3 format, making MP3 exports much faster, especially for recordings of over 10 seconds. Defaults to false
+
+
+**TODO** continuously encoding OGG provides a codec error, figure out why
 
 ---------
 #### Instance Methods

diff --git a/example/index.html b/example/index.html
@@ -1,6 +1,8 @@
 <!DOCTYPE html>
 
 <html>
+
+
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 	<title>Live input record and playback</title>
@@ -11,6 +13,7 @@
    <link href="css/style.css" rel="stylesheet" type="text/css" />
 </head>
 <body>
+<div></div>
 
   <h1>Audio Recording test</h1>
 
@@ -61,12 +64,24 @@ <h2>Log</h2>
     __log('Exporting to OGG');
 
 
+
+
+    var c = Date.now();
+
+
+
     recorder.exportOGG(function(blob) {
 
 
+      var a = Date.now();
+
+
       __log('OGG file successfully exported');
 
-      console.log("Ogg file successfully exported");
+
+      __log('OGG Processed in ' + (a -c) + 'ms' );
+
+
 
 
       console.log(blob);
@@ -88,12 +103,24 @@ <h2>Log</h2>
 
 
 
+
       __log('Exporting to mp3');
-      recorder.exportMP3(function(blob) {
 
 
+ var b = Date.now();
+
+      recorder.exportMP3(function(blob) {
+
         __log('MP3 file successfully exported');
 
+          var a = Date.now();
+
+         __log('MP3 Processed in ' + (a -b) + 'ms' );
+
+
+         var length = ((blob.size*8)/128000);
+
+        __log('MP3 duration: ' +length + ' s' );
 
         console.log(blob);
         var url = URL.createObjectURL(blob);
@@ -119,7 +146,6 @@ <h2>Log</h2>
 
 
 
-
     });
 
 
@@ -133,7 +159,7 @@ <h2>Log</h2>
     audioRecorder.requestDevice(function(recorderObject){
 
       recorder = recorderObject;
-    });
+    }, {recordAsOGG: true});
 
 
 

diff --git a/example/js/audioRecord.js b/example/js/audioRecord.js
@@ -9,8 +9,6 @@
 		var recording = false, initialized=false,
 			currCallback, worker;
 
-		console.log("Recorder Object");
-
 		var bufferLen = config.bufferLen || 4096;
 		this.context = source.context;
 		this.node = (this.context.createScriptProcessor ||
@@ -30,7 +28,9 @@
 			config: {
 				sampleRate: this.context.sampleRate,
 				mp3LibPath: mp3LibPath,
-				vorbisLibPath: vorbisLibPath
+				vorbisLibPath: vorbisLibPath,
+				recordAsMP3: config.recordAsMP3 || false,
+				recordAsOGG: config.recordAsOGG || false
 			}
 		});
 
@@ -95,8 +95,6 @@
 
 
 
-
-
 		this.node.onaudioprocess = function(e){
 			if (!recording) return;
 			worker.postMessage({
@@ -113,8 +111,7 @@
 
 
 
-	};
-
+	}
 
 
 
@@ -145,30 +142,17 @@
 
 		  }, function(e) {
 
-			  console.log("An error occurred"); //TODO: Error handling
+			  console.log("An error occurred"); //Null if something goes wrong
 			  callback(null);
 
 		  });
 
 	  }
 
 
-
 	};
 
 
-
-
-
-
-
-
-
-
-
-
-
-
 	window.audioRecorder = audioRecorder;