xiaozhi-esp32/main/audio_processing/esp_wake_word.h

#ifndef ESP_WAKE_WORD_H
#define ESP_WAKE_WORD_H

#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include <freertos/event_groups.h>

#include <esp_wn_iface.h>
#include <esp_wn_models.h>
#include <model_path.h>

#include <list>
#include <string>
#include <vector>
#include <functional>
#include <mutex>
#include <condition_variable>

#include "audio_codec.h"
#include "wake_word.h"

class EspWakeWord : public WakeWord {
public:
    EspWakeWord();
    ~EspWakeWord();

    void Initialize(AudioCodec* codec);
    void Feed(const std::vector<int16_t>& data);
    void OnWakeWordDetected(std::function<void(const std::string& wake_word)> callback);
    void StartDetection();
    void StopDetection();
    bool IsDetectionRunning();
    size_t GetFeedSize();
    void EncodeWakeWordData();
    bool GetWakeWordOpus(std::vector<uint8_t>& opus);
    const std::string& GetLastDetectedWakeWord() const { return last_detected_wake_word_; }

private:
    esp_wn_iface_t *wakenet_iface_ = nullptr;
    model_iface_data_t *wakenet_data_ = nullptr;
    srmodel_list_t *wakenet_model_ = nullptr;
    EventGroupHandle_t event_group_;
    AudioCodec* codec_ = nullptr;

    std::function<void(const std::string& wake_word)> wake_word_detected_callback_;
    std::string last_detected_wake_word_;
};

#endif