libaac: Add test code for AAC encoder and decoder

-- unit test code for AAC encoder and decoder.

Change-Id: I6af9030d485dd4151a84f5f4870da4b2c4c45dfa
diff --git a/libaac/aacEncode.h b/libaac/aacEncode.h
new file mode 100644
index 0000000..46a7734
--- /dev/null
+++ b/libaac/aacEncode.h
@@ -0,0 +1,55 @@
+#ifndef __AAC_ENCODE__
+#define __AAC_ENCODE__
+/*
+ * Copyright (c) 2018, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * */
+typedef struct aacConfig {
+    unsigned int n_sampleRate;
+    unsigned int n_channels;
+    unsigned int n_bitsPerSample;
+    unsigned int n_bitrate;
+    unsigned int n_samplesPerFrame;
+}aacConfigType;
+
+class aacEncode {
+public:
+    aacEncode();
+    ~aacEncode();
+    bool aacConfigure(aacConfigType* p_aacConfig);
+    bool aacEncodeFrame(unsigned char* p_inBuffer,
+                   unsigned int n_inSize,
+                   unsigned char* p_outBuffer,
+                   unsigned int n_outSize,
+                   unsigned int* p_length);
+
+private:
+    void* p_aacHandle;
+    void* p_aacInfo;
+    aacConfigType s_aacConfig;
+};
+#endif