1 files changed, 69 insertions, 0 deletions
diff --git a/isoparser/src/main/java/com/googlecode/mp4parser/h264/BTree.java b/isoparser/src/main/java/com/googlecode/mp4parser/h264/BTree.java
new file mode 100644
index 0000000..57391ba
--- /dev/null
+++ b/isoparser/src/main/java/com/googlecode/mp4parser/h264/BTree.java
@@ -0,0 +1,69 @@
+/*
+Copyright (c) 2011 Stanislav Vitvitskiy
+
+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.
+*/
+package com.googlecode.mp4parser.h264;
+
+
+/**
+ * Simple BTree implementation needed for haffman tables
+ *
+ * @author Stanislav Vitvitskiy
+ */
+public class BTree {
+    private BTree zero;
+    private BTree one;
+    private Object value;
+
+    /**
+     * Adds a leaf value to a binary path specified by path
+     *
+     * @param str
+     * @param value
+     */
+    public void addString(String path, Object value) {
+        if (path.length() == 0) {
+            this.value = value;
+            return;
+        }
+        char charAt = path.charAt(0);
+        BTree branch;
+        if (charAt == '0') {
+            if (zero == null)
+                zero = new BTree();
+            branch = zero;
+        } else {
+            if (one == null)
+                one = new BTree();
+            branch = one;
+        }
+        branch.addString(path.substring(1), value);
+    }
+
+    public BTree down(int b) {
+        if (b == 0)
+            return zero;
+        else
+            return one;
+    }
+
+    public Object getValue() {
+        return value;
+    }
+}
+\ No newline at end of file