add some code

managed_components/78__esp-opus-encoder/include/opus_decoder.h

@@ -0,0 +1,36 @@
+#ifndef _OPUS_DECODER_WRAPPER_H_
+#define _OPUS_DECODER_WRAPPER_H_
+
+#include <functional>
+#include <vector>
+#include <cstdint>
+#include <mutex>
+
+#include "opus.h"
+
+
+class OpusDecoderWrapper {
+public:
+    OpusDecoderWrapper(int sample_rate, int channels, int duration_ms = 60);
+    ~OpusDecoderWrapper();
+
+    bool Decode(std::vector<uint8_t>&& opus, std::vector<int16_t>& pcm);
+    void ResetState();
+
+    inline int sample_rate() const {
+        return sample_rate_;
+    }
+
+    inline int duration_ms() const {
+        return duration_ms_;
+    }
+
+private:
+    std::mutex mutex_;
+    struct OpusDecoder* audio_dec_ = nullptr;
+    int frame_size_;
+    int sample_rate_;
+    int duration_ms_;
+};
+
+#endif // _OPUS_DECODER_WRAPPER_H_