使用java 调用 DeepSpeech 的代码

要使用Java调用DeepSpeech，可以使用Java Native Access (JNA)库来调用DeepSpeech的C++接口。

首先，需要在Java项目中添加JNA库的依赖。然后，编写一个Java类来定义JNA与DeepSpeech的接口：

import com.sun.jna.Library;
import com.sun.jna.Native;

public class DeepSpeech {

    public interface DeepSpeechLibrary extends Library {
        DeepSpeechLibrary INSTANCE = Native.loadLibrary("deepspeech", DeepSpeechLibrary.class);

        void* DeepSpeechModel_Create(String, int, int, int);

        void DeepSpeechModel_Delete(void*);

        int DeepSpeechModel_EnableDecoderWithLM(void*, String, int, String, float, float);

        int DeepSpeechModel_SpeechToText(void*, short[], int, String);
    }

    public static void* createModel(String modelPath, int beamWidth, int numWorkers, int lmType) {
        return DeepSpeechLibrary.INSTANCE.DeepSpeechModel_Create(modelPath, beamWidth, numWorkers, lmType);
    }

    public static void deleteModel(void* model) {
        DeepSpeechLibrary.INSTANCE.DeepSpeechModel_Delete(model);
    }

    public static int enableDecoderWithLM(void* model, String lmPath, int triePath, String lmAlphabetPath, float lmWeight, float wordWeight) {
        return DeepSpeechLibrary.INSTANCE.DeepSpeechModel_EnableDecoderWithLM(model, lmPath, triePath, lmAlphabetPath, lmWeight, wordWeight);
    }

    public static int speechToText(void* model, short[] audioBuffer, int audioLength, String transcription) {
        return DeepSpeechLibrary.INSTANCE.DeepSpeechModel_SpeechToText(model, audioBuffer, audioLength, transcription);
    }
}

然后，可以使用以下代码来加载模型并将音频文件转换为文本：

void* model = DeepSpeech.createModel("path/to/model", 500, 32, 0);
DeepSpeech.enableDecoderWithLM(model, "path/to/lm", 1, "path/to/alphabet", 0.75f, 1.85f);

// Load audio file into buffer
short[] audioBuffer = loadAudioFile("path/to/audio/file");

String transcription = new String(new char[1024]);
int result = DeepSpeech.speechToText(model, audioBuffer, audioBuffer.length, transcription);
if (result == 0) {
    System.out.println("Transcription: " + transcription.trim());
} else {
    System.err.println("Transcription failed with code " + result);
}

DeepSpeech.deleteModel(model);

注意，这只是一个简单的示例代码，需要根据自己的具体需求进行修改。另外，需要确保DeepSpeech的动态库文件已经正确安装并在系统路径中。