add websocket protocol

main/protocol.h

@@ -5,22 +5,42 @@
 #include <string>
 #include <functional>
 
+struct BinaryProtocol3 {
+    uint8_t type;
+    uint8_t reserved;
+    uint16_t payload_size;
+    uint8_t payload[];
+} __attribute__((packed));
+
+
 class Protocol {
 public:
     virtual ~Protocol() = default;
 
-    virtual void OnIncomingAudio(std::function<void(const std::string& data)> callback) = 0;
-    virtual void OnIncomingJson(std::function<void(const cJSON* root)> callback) = 0;
+    inline int server_sample_rate() const {
+        return server_sample_rate_;
+    }
+
+    void OnIncomingAudio(std::function<void(const std::string& data)> callback);
+    void OnIncomingJson(std::function<void(const cJSON* root)> callback);
+    void OnAudioChannelOpened(std::function<void()> callback);
+    void OnAudioChannelClosed(std::function<void()> callback);
+
     virtual void SendAudio(const std::string& data) = 0;
     virtual void SendText(const std::string& text) = 0;
     virtual void SendState(const std::string& state) = 0;
     virtual void SendAbort() = 0;
     virtual bool OpenAudioChannel() = 0;
     virtual void CloseAudioChannel() = 0;
-    virtual void OnAudioChannelOpened(std::function<void()> callback) = 0;
-    virtual void OnAudioChannelClosed(std::function<void()> callback) = 0;
     virtual bool IsAudioChannelOpened() const = 0;
-    virtual int GetServerSampleRate() const = 0;
+
+protected:
+    std::function<void(const cJSON* root)> on_incoming_json_;
+    std::function<void(const std::string& data)> on_incoming_audio_;
+    std::function<void()> on_audio_channel_opened_;
+    std::function<void()> on_audio_channel_closed_;
+
+    int server_sample_rate_ = 16000;
 };
 
 #endif // PROTOCOL_H