Refactor extractor

- Refactor info classes and extractors
- Reformat and fix indentation
- Organize packages and classes
- Rename variables/methods and fix regex
- Change the capitalization
- Add methods to playlist extractor

stream/AudioStream.java

@@ -0,0 +1,52 @@
+package org.schabi.newpipe.extractor.stream;
+
+import java.io.Serializable;
+
+/*
+ * Created by Christian Schabesberger on 04.03.16.
+ *
+ * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
+ * AudioStream.java is part of NewPipe.
+ *
+ * NewPipe is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * NewPipe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+public class AudioStream implements Serializable {
+    public String url = "";
+    public int format = -1;
+    public int bandwidth = -1;
+    public int sampling_rate = -1;
+    public int avgBitrate = -1;
+
+    public AudioStream(String url, int format, int avgBitrate, int bandwidth, int samplingRate) {
+        this.url = url;
+        this.format = format;
+        this.avgBitrate = avgBitrate;
+        this.bandwidth = bandwidth;
+        this.sampling_rate = samplingRate;
+    }
+
+    // reveals whether two streams are the same, but have different urls
+    public boolean equalStats(AudioStream cmp) {
+        return format == cmp.format
+                && bandwidth == cmp.bandwidth
+                && sampling_rate == cmp.sampling_rate
+                && avgBitrate == cmp.avgBitrate;
+    }
+
+    // reveals whether two streams are equal
+    public boolean equals(AudioStream cmp) {
+        return cmp != null && equalStats(cmp) && url.equals(cmp.url);
+    }
+}