tencent cloud

// Get the V2TIMMessage object from VMS
V2TIMMessage *msg = messageList[0];
if (msg.elemType == V2TIM_ELEM_TYPE_SOUND) {
    // Retrieve the soundElem from V2TIMMessage
    V2TIMSoundElem *soundElem = msg.soundElem;
    // Invoke speech-to-text conversion, using the Chinese-English recognition model by default
    [soundElem convertVoiceToText:@"" completion:^(int code, NSString *desc, NSString *result) {
        // If recognition is successful, 'result' will be the recognition result
        NSLog(@"convertVoiceToText, code: %d, desc: %@, result: %@", code, desc, result);
    }];
}

template <class T>
class ValueCallback final : public V2TIMValueCallback<T> {
public:
    using SuccessCallback = std::function<void(const T&)>;
    using ErrorCallback = std::function<void(int, const V2TIMString&)>;

    ValueCallback() = default;
    ~ValueCallback() override = default;

    void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback) {
        success_callback_ = std::move(success_callback);
        error_callback_ = std::move(error_callback);
    }

    void OnSuccess(const T& value) override {
        if (success_callback_) {
            success_callback_(value);
        }
    }
    void OnError(int error_code, const V2TIMString& error_message) override {
        if (error_callback_) {
            error_callback_(error_code, error_message);
        }
    }

private:
    SuccessCallback success_callback_;
    ErrorCallback error_callback_;
};

auto callback = new ValueCallback<V2TIMString>{};
callback->SetCallback(
    [=](const V2TIMString& result) {
        // Speech-to-text conversion successful, 'result' will be the conversion result
        delete callback;
    },
    [=](int error_code, const V2TIMString& error_message) {
        // Speech-to-Text Conversion failed
        delete callback;
    });

// Get the V2TIMMessage object from VMS
V2TIMMessage *msg = messageList[0];
// Retrieve the soundElem from V2TIMMessage
V2TIMElem *elem = message.elemList[0];
if (elem->elemType == V2TIM_ELEM_TYPE_SOUND) {
    V2TIMSoundElem *sound_elem = (V2TIMSoundElem *)elem;
    // Invoke speech-to-text conversion, using the Chinese-English recognition model by default
    sound_elem->ConvertVoiceToText("", &convertVoiceToTextCallback);
}