Android emulator opengl - unit test host side renderer

This adds 'ut_renderer' - a host side unit test renderer. ut_renderer is used to
take a command stream over a socket connection and render it into an opengl window.
The renderer uses the GLESv1_dec decoder library and the ut_rendercontrol api to parse
the command stream.
The ut_renderer uses an external (plug-in) opengl impelementation.

Change-Id: I77794044ca9ca8a75a66a95a248eac384710aafe

tools/emulator/opengl/tests/ut_renderer/ReadBuffer.h

@@ -0,0 +1,36 @@
+/*
+* 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 _READ_BUFFER_H
+#define _READ_BUFFER_H
+
+#include "TcpStream.h"
+
+class ReadBuffer {
+public:
+    ReadBuffer(TcpStream *stream, size_t bufSize);
+    ~ReadBuffer();
+    int getData(); // get fresh data from the stream
+    unsigned char *buf() { return m_readPtr; } // return the next read location
+    size_t validData() { return m_validData; } // return the amount of valid data in readptr
+    void consume(size_t amount); // notify that 'amount' data has been consumed;
+private:
+    unsigned char *m_buf;
+    unsigned char *m_readPtr;
+    size_t m_size;
+    size_t m_validData;
+    TcpStream *m_stream;
+};
+#endif