--- /dev/null
+/*
+* Copyright (C) 2011 The Android Open Source Project
+*
+* Licensed 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.
+*/
+#ifndef _FIXED_BUFFER_H
+#define _FIXED_BUFFER_H
+
+class FixedBuffer {
+public:
+ FixedBuffer(size_t initialSize = 0) {
+ m_buffer = NULL;
+ m_bufferLen = initialSize;
+ alloc(m_bufferLen);
+ }
+
+ ~FixedBuffer() {
+ delete [] m_buffer;
+ m_bufferLen = 0;
+ }
+
+ void * alloc(size_t size) {
+ if (m_bufferLen >= size)
+ return (void *)(m_buffer);
+
+ if (m_buffer != NULL)
+ delete[] m_buffer;
+
+ m_bufferLen = size;
+ m_buffer = new unsigned char[m_bufferLen];
+ if (m_buffer == NULL)
+ m_bufferLen = 0;
+
+ return m_buffer;
+ }
+ void *ptr() { return m_buffer; }
+ size_t len() { return m_bufferLen; }
+private:
+ unsigned char *m_buffer;
+ size_t m_bufferLen;
+};
+
+#endif