Hello, Xiaozhi.

main/OpusEncoder.h

@@ -0,0 +1,25 @@
+#ifndef _OPUS_ENCODER_H_
+#define _OPUS_ENCODER_H_
+
+#include <functional>
+#include <string>
+#include "opus.h"
+
+class OpusEncoder {
+public:
+    OpusEncoder();
+    ~OpusEncoder();
+
+    void Configure(int sample_rate, int channels, int duration_ms = 60);
+    void Encode(const void* pcm, size_t pcm_len, std::function<void(const void*, size_t)> handler);
+    bool IsBufferEmpty() const { return in_buffer_.empty(); }
+
+private:
+    struct OpusEncoder* audio_enc_ = nullptr;
+    int frame_size_;
+    int out_size_;
+    uint8_t* out_buffer_ = nullptr;
+    std::string in_buffer_;
+};
+
+#endif // _OPUS_ENCODER_H_