Add opus codec test

tests/opus/OpusEncoderImpl.h

@@ -0,0 +1,33 @@
+
+#ifndef __OPUSENCODERIMPL_H
+#define __OPUSENCODERIMPL_H
+#include <mutex>
+#include <queue>
+#include <thread>
+#include <vector>
+
+#include "base_type.h"
+#include "opus/opus.h"
+
+class OpusEncoderImpl {
+ private:
+  OpusEncoder *encoder;
+  const int channel_num;
+  int sample_rate;
+  std::queue<StreamInfo> info_queue;
+  std::queue<unsigned char> pcm_queue;
+  std::mutex mutex;
+  bool isRuning = true;
+  std::mutex access_mutex;
+  std::unique_ptr<std::thread> m_thread;
+
+ public:
+  OpusEncoderImpl(int sampleRate, int channel);
+  void Feed(unsigned char *data, int len);
+  bool PopFrame(StreamInfo &info);
+  void EncodeRun();
+  void Stop();
+  ~OpusEncoderImpl();
+};
+
+#endif