1 files changed, 155 insertions, 0 deletions
diff --git a/tuner/src/com/android/tv/tuner/util/ByteArrayBuffer.java b/tuner/src/com/android/tv/tuner/util/ByteArrayBuffer.java
new file mode 100644
index 00000000..00ba039a
--- /dev/null
+++ b/tuner/src/com/android/tv/tuner/util/ByteArrayBuffer.java
@@ -0,0 +1,155 @@
+/*
+ * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/util/ByteArrayBuffer.java $
+ * $Revision: 496070 $
+ * $Date: 2007-01-14 04:18:34 -0800 (Sun, 14 Jan 2007) $
+ *
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ * For the license checker
+ * Licensed under the Apache License, Version 2.0
+ *
+ */
+
+package com.android.tv.tuner.util;
+
+/** An expandable byte buffer built on byte array. */
+public final class ByteArrayBuffer {
+
+    private byte[] buffer;
+    private int len;
+
+    public ByteArrayBuffer(int capacity) {
+        super();
+        if (capacity < 0) {
+            throw new IllegalArgumentException("Buffer capacity may not be negative");
+        }
+        this.buffer = new byte[capacity];
+    }
+
+    private void expand(int newlen) {
+        byte newbuffer[] = new byte[Math.max(this.buffer.length << 1, newlen)];
+        System.arraycopy(this.buffer, 0, newbuffer, 0, this.len);
+        this.buffer = newbuffer;
+    }
+
+    public void append(final byte[] b, int off, int len) {
+        if (b == null) {
+            return;
+        }
+        if ((off < 0)
+                || (off > b.length)
+                || (len < 0)
+                || ((off + len) < 0)
+                || ((off + len) > b.length)) {
+            throw new IndexOutOfBoundsException();
+        }
+        if (len == 0) {
+            return;
+        }
+        int newlen = this.len + len;
+        if (newlen > this.buffer.length) {
+            expand(newlen);
+        }
+        System.arraycopy(b, off, this.buffer, this.len, len);
+        this.len = newlen;
+    }
+
+    public void append(int b) {
+        int newlen = this.len + 1;
+        if (newlen > this.buffer.length) {
+            expand(newlen);
+        }
+        this.buffer[this.len] = (byte) b;
+        this.len = newlen;
+    }
+
+    public void append(final char[] b, int off, int len) {
+        if (b == null) {
+            return;
+        }
+        if ((off < 0)
+                || (off > b.length)
+                || (len < 0)
+                || ((off + len) < 0)
+                || ((off + len) > b.length)) {
+            throw new IndexOutOfBoundsException();
+        }
+        if (len == 0) {
+            return;
+        }
+        int oldlen = this.len;
+        int newlen = oldlen + len;
+        if (newlen > this.buffer.length) {
+            expand(newlen);
+        }
+        for (int i1 = off, i2 = oldlen; i2 < newlen; i1++, i2++) {
+            this.buffer[i2] = (byte) b[i1];
+        }
+        this.len = newlen;
+    }
+
+    public void clear() {
+        this.len = 0;
+    }
+
+    public byte[] toByteArray() {
+        byte[] b = new byte[this.len];
+        if (this.len > 0) {
+            System.arraycopy(this.buffer, 0, b, 0, this.len);
+        }
+        return b;
+    }
+
+    public int byteAt(int i) {
+        return this.buffer[i];
+    }
+
+    public int capacity() {
+        return this.buffer.length;
+    }
+
+    public int length() {
+        return this.len;
+    }
+
+    public byte[] buffer() {
+        return this.buffer;
+    }
+
+    public void setLength(int len) {
+        if (len < 0 || len > this.buffer.length) {
+            throw new IndexOutOfBoundsException();
+        }
+        this.len = len;
+    }
+
+    public boolean isEmpty() {
+        return this.len == 0;
+    }
+
+    public boolean isFull() {
+        return this.len == this.buffer.length;
+    }
+}