Android Studio提取MP3音频信号至Float数组的问题求助

需求 #

项目需要处理音频文件，提取其中的音频信号并与其他文件对比。核心目标是将用户选择的MP3等音频文件的音频信号提取为Float数组，理想状态下数组第n位对应t=n*dt时刻的麦克风采集压力值（dt为预设采样时间）。

当前开发环境与尝试 #

• 开发工具：Android Studio + Java
• 尝试库：TarsosDSP，已将TarsosDSP-Android-latest.jar放入/libs目录并添加项目依赖

文件选择代码 #

public void requestFileSeeking(View view){
        Snackbar.make(view,"Requested file choosing", Snackbar.LENGTH_SHORT).show();

        myFileIntent=new Intent(Intent.ACTION_GET_CONTENT);
        myFileIntent.setType("*/*");
        startActivityForResult(myFileIntent, 10);
    }

注：startActivityForResult()已过时，可使用registerForActivityResult替代，但这并非当前核心问题。

核心错误代码 #

在文件选择后的处理逻辑中，以下代码触发致命错误：

@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {

        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == PICK_SONG_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
            Uri uri = data.getData();
            // 该行代码在选择文件时触发错误
            AudioDispatcher dispatcher = AudioDispatcherFactory.fromPipe(uri.getPath(), 44100, 4096, 0);

            Toast.makeText(this, uri.getPath(), Toast.LENGTH_SHORT).show();
            dispatcher.addAudioProcessor(new AudioProcessor() {

                @Override
                public boolean process(AudioEvent audioEvent) {
                    // 处理音频数据
                    float[] audioBuffer = audioEvent.getFloatBuffer().clone();
                    return true;
                }

                @Override
                public void processingFinished() {
                    // 收尾处理
                }
            });

            dispatcher.run();
        }
    }

错误日志 #

选择文件后模拟器抛出致命错误，日志如下：

E/PipeDecoder: Could not find an ffmpeg binary for your Android system. Did you forget calling: 'new AndroidFFMPEGLocator(this);' ?
E/PipeDecoder: Tried to unpack a statically compiled ffmpeg binary for your architecture to: /data/user/0/com.example.youknowthatsong/cache/ffmpeg
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.youknowthatsong, PID: 32739
    java.lang.Error: Decoding via a pipe will not work: Could not find an ffmpeg binary for your system
        at be.tarsos.dsp.io.PipeDecoder.<init>(Unknown Source:350)
        at be.tarsos.dsp.io.PipedAudioStream.<clinit>(Unknown Source:2)
        at be.tarsos.dsp.io.android.AudioDispatcherFactory.fromPipe(Unknown Source:0)
        at com.example.youknowthatsong.MainActivity.onActivityResult(MainActivity.java:198)
        at android.app.Activity.dispatchActivityResult(Activity.java:8939)
        at android.app.ActivityThread.deliverResults(ActivityThread.java:5474)
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:5520)
        at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:67)
        at android.app.servertransaction.ActivityTransactionItem.execute(ActivityTransactionItem.java:45)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:138)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2401)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loopOnce(Looper.java:205)
        at android.os.Looper.loop(Looper.java:294)
        at android.app.ActivityThread.main(ActivityThread.java:8128)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:578)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:946)

求助点 #

团队尝试解决FFmpeg二进制文件缺失问题但未成功，寻求相关经验者指导如何解决该问题，或提供其他可行的Android平台提取音频信号为Float数组的方案。

内容的提问来源于stack exchange，提问作者Adrien S.