支持频谱显示，感谢哈哈哈群友的代码

main/display/lcd_display.h

@@ -8,6 +8,11 @@
 #include <font_emoji.h>
 
 #include <atomic>
+#include <vector>
+#include <esp_timer.h>
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+#include <freertos/event_groups.h>  
 
 // Theme color structure
 struct ThemeColors {
@@ -42,6 +47,53 @@ protected:
     virtual bool Lock(int timeout_ms = 0) override;
     virtual void Unlock() override;
 
+    // FFT 绘制方法
+    void readAudioData();
+    
+    
+  
+    virtual void clearScreen() override;
+    virtual void stopFft() override;  // 停止FFT显示
+    
+    // 定时任务方法
+    void periodicUpdateTask();
+    static void periodicUpdateTaskWrapper(void* arg);
+    
+    // LVGL变量
+    lv_obj_t* canvas_ = nullptr;
+    uint16_t* canvas_buffer_ = nullptr;
+    void create_canvas();
+    uint16_t get_bar_color(int x_pos);
+    void draw_spectrum(float *power_spectrum,int fft_size);
+    void draw_bar(int x,int y,int bar_width,int bar_height,uint16_t color,int bar_index);
+    void draw_block(int x,int y,int block_x_size,int block_y_size,uint16_t color,int bar_index);
+    
+    int canvas_width_;
+    int canvas_height_;
+   
+    
+    int16_t* audio_data=nullptr;
+    int16_t* frame_audio_data=nullptr;
+    uint32_t last_fft_update = 0;
+    bool fft_data_ready = false;
+    float* spectrum_data=nullptr;
+
+    // FFT 相关变量
+    int audio_display_last_update = 0;
+    std::atomic<bool> fft_task_should_stop = false;  // FFT任务停止标志
+    TaskHandle_t fft_task_handle = nullptr;          // FFT任务句柄
+
+    float* fft_real;
+    float* fft_imag;
+    float* hanning_window_float;
+    void compute(float* real, float* imag, int n, bool forward);
+    
+    // 添加缺少的方法声明
+    void drawSpectrumIfReady();
+    void MyUI();
+
+    
+
 protected:
     // 添加protected构造函数
     LcdDisplay(esp_lcd_panel_io_handle_t panel_io, esp_lcd_panel_handle_t panel, DisplayFonts fonts, int width, int height);
@@ -50,6 +102,7 @@ public:
     ~LcdDisplay();
     virtual void SetEmotion(const char* emotion) override;
     virtual void SetIcon(const char* icon) override;
+    virtual void SetMusicInfo(const char* song_name) override;
     virtual void SetPreviewImage(const lv_img_dsc_t* img_dsc) override;
 #if CONFIG_USE_WECHAT_MESSAGE_STYLE
     virtual void SetChatMessage(const char* role, const char* content) override; 
@@ -57,6 +110,8 @@ public:
 
     // Add theme switching function
     virtual void SetTheme(const std::string& theme_name) override;
+    virtual void start() override;
+
 };
 
 // RGB LCD显示器
@@ -103,4 +158,4 @@ public:
                       bool mirror_x, bool mirror_y, bool swap_xy,
                       DisplayFonts fonts);
 };
-#endif // LCD_DISPLAY_H
+#endif // LCD_DISPLAY_H