录制音频时出现Android SIGSEGV错误

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Android SIGSEGV error when recording audio(录制音频时出现Android SIGSEGV错误)
本文介绍了录制音频时出现Android SIGSEGV错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我需要你的帮助.我正在尝试使用 Androids AudioRecord 类录制一些音频.大多数情况下这工作得很好，但有时我会收到 SIGSEGV 错误.

I need your help. I'm trying to record some audio with Androids AudioRecord class. Most time this works very well but sometimes I get a SIGSEGV error.

这是在录制音频时在单独的线程中运行的代码:

Here is the code which runs in a seperate Thread while recording audio:

private void startRecording() {
    recorder = new AudioRecord(MediaRecorder.AudioSource.MIC,
            RECORDER_SAMPLERATE, RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING, bufferSize);

    recorder.startRecording();

    isRecording = true;

    recordingThread = new Thread(new Runnable() {

        @Override
        public void run() {
            writeAudioDataToFile();
        }
    }, "AudioRecorder Thread");

    recordingThread.start();
}

private void writeAudioDataToFile() {
    byte data[] = new byte[bufferSize];
    String filename = getTempFilename();
    FileOutputStream os = null;

    try {
        os = new FileOutputStream(filename);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }

    int read = 0;

    if (null != os) {
        while (isRecording) {
            read = recorder.read(data, 0, bufferSize);

            if (AudioRecord.ERROR_INVALID_OPERATION != read) {
                try {
                    os.write(data);
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

        try {
            os.close();
            os.flush();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

当录制停止时，我会这样做:

And here is what I do, when the recording stops:

public void stopRecording() {
    if (null != recorder) {
        isRecording = false;
        mRecordingBlocked = true;
        mProgressDialog = RecorderDialog.newInstance();
        mProgressDialog.show(getFragmentManager(), "progressDialog");

        recorder.stop();
        recorder.release();

        recorder = null;
        recordingThread = null;

        new Thread(new Runnable() {
            @Override
            public void run() {
                String fileName = getFilename();
                copyWaveFile(getTempFilename(), fileName);

                final TelephonyManager tm = (TelephonyManager) getActivity().getBaseContext().getSystemService(Context.TELEPHONY_SERVICE);

                final String tmDevice, tmSerial, androidId;
                tmDevice = "" + tm.getDeviceId();
                tmSerial = "" + tm.getSimSerialNumber();
                androidId = "" + android.provider.Settings.Secure.getString(getActivity().getContentResolver(), android.provider.Settings.Secure.ANDROID_ID);

                UUID deviceUuid = new UUID(androidId.hashCode(), ((long) tmDevice.hashCode() << 32) | tmSerial.hashCode());
                String deviceId = deviceUuid.toString();
                App.db.insertEntry(deviceId, "Song title", fileName);

                deleteTempFile();

                if (cbox_overdub.isChecked()) {
                    phrases.add(playAudio(fileName, true));
                }
            }
        }).start();
    }

}

private void copyWaveFile(String inFilename, String outFilename) {
    FileInputStream in;
    FileOutputStream out;
    long totalAudioLen = 0;
    long totalDataLen;
    long longSampleRate = RECORDER_SAMPLERATE;
    int channels = 2;
    long byteRate = RECORDER_BPP * RECORDER_SAMPLERATE * channels / 8;

    try {
        AppLog.logString("begin copyWaveFile try{}");
        File file = new File(inFilename);
        in = new FileInputStream(file);
        byte[] bytes = new byte[(int) file.length()];
        totalAudioLen = in.getChannel().size();
        totalDataLen = totalAudioLen + 36;
        in.read(bytes);
        in.close();

        out = new FileOutputStream(outFilename);
        AppLog.logString("fos created");

        WriteWaveFileHeader(out, totalAudioLen, totalDataLen,
                longSampleRate, channels, byteRate);
        AppLog.logString("wave header written");

        int bufferLength = 1024;
        publishProgress(0);
        for (int i = 0; i < bytes.length; i += bufferLength) {
            int progress = (int) ((i / (float) bytes.length) * 100);
            publishProgress(progress);
            if (bytes.length - i >= bufferLength) {
                out.write(bytes, i, bufferLength);
            } else {
                out.write(bytes, i, bytes.length - i);
            }
        }
        publishProgress(100);
        AppLog.logString("progress complete");
        mRecordingBlocked = false;
        mProgressDialog.dismiss();

        out.close();
        out.flush();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

这个错误似乎发生在 AudioRecord 的实例已经停止之后.然后我将临时 temp_record.wav(SD 卡)的内容复制到目标(SD 卡)，并设置适当的波形文件头.

It seems this error occurs after the instance of AudioRecord has already been stopped. Then I copy the contents of my temporary temp_record.wav (SD Card) to the destination (SD Card) with setting a proper wave file header.

我无法从以下调试信息中过滤出任何有用的信息.我希望有人有一个想法.谢谢！

I'm not able to filter any useful information out of the following debug information. I hope someone has an idea. Thank you!

这是 Logcat 输出:

06-30 14:47:53.311: INFO/DEBUG(9381): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
06-30 14:47:53.311: INFO/DEBUG(9381): Build fingerprint: 'otorola/RTGB/umts_milestone2:2.3.4/MILS2_U6_4.1-22/1317097892:user/release-keys'
06-30 14:47:53.311: INFO/DEBUG(9381): pid: 9459, tid: 9525  >>> de.intermeco.android.apps.ilaugh <<<
06-30 14:47:53.311: INFO/DEBUG(9381): signal 11 (SIGSEGV), code 2 (SEGV_ACCERR), fault addr 4640e000
06-30 14:47:53.311: INFO/DEBUG(9381): r0 4640e000  r1 00000000  r2 fffffd49  r3 4670da18
06-30 14:47:53.311: INFO/DEBUG(9381): r4 4640e000  r5 4640e000  r6 fffffd49  r7 4670da18
06-30 14:47:53.311: INFO/DEBUG(9381): r8 a904cf6a  r9 0000000a  10 a904cfad  fp a904cff0
06-30 14:47:53.311: INFO/DEBUG(9381): ip a9060074  sp 4670d9e0  lr afd11704  pc afd113dc  cpsr 20000050
06-30 14:47:53.311: INFO/DEBUG(9381): d0  6472656767756265  d1  0037fff00020000c
06-30 14:47:53.311: INFO/DEBUG(9381): d2  fff5ffd8fff5ffdb  d3  ffe0ffd8ffd9ffd8
06-30 14:47:53.311: INFO/DEBUG(9381): d4  fff2ffe50008ffd4  d5  ffdafffafff20000
06-30 14:47:53.311: INFO/DEBUG(9381): d6  fff40003ffcf0003  d7  ffe30013ffe1fffd
06-30 14:47:53.311: INFO/DEBUG(9381): d8  0000000000989680  d9  0000000000000000
06-30 14:47:53.311: INFO/DEBUG(9381): d10 0000000000000000  d11 0000000000000000
06-30 14:47:53.311: INFO/DEBUG(9381): d12 0000000000000000  d13 0000000000000000
06-30 14:47:53.311: INFO/DEBUG(9381): d14 0000000000000000  d15 0000000000000000
06-30 14:47:53.311: INFO/DEBUG(9381): d16 000000c24003a7e0  d17 4000000000000000
06-30 14:47:53.311: INFO/DEBUG(9381): d18 3ff0000000000000  d19 0000000000000000
06-30 14:47:53.311: INFO/DEBUG(9381): d20 b96377ce858a5d48  d21 3929f5135cb87c55
06-30 14:47:53.311: INFO/DEBUG(9381): d22 3e21ee9ebdb4b1c4  d23 bda8fae9be8838d4
06-30 14:47:53.319: INFO/DEBUG(9381): d24 0000000000000000  d25 0000000000000000
06-30 14:47:53.319: INFO/DEBUG(9381): d26 0000000000000000  d27 ffffffffffffffff
06-30 14:47:53.319: INFO/DEBUG(9381): d28 0100010001000100  d29 0100010001000100
06-30 14:47:53.319: INFO/DEBUG(9381): d30 4086800000000000  d31 3ff0000000000000
06-30 14:47:53.319: INFO/DEBUG(9381): scr 60000010
06-30 14:47:53.483: INFO/DEBUG(9381): #00  pc 000113dc  /system/lib/libc.so (pthread_mutex_lock)
06-30 14:47:53.483: INFO/DEBUG(9381): #01  pc 00011700  /system/lib/libc.so (__pthread_cond_timedwait_relative)
06-30 14:47:53.483: INFO/DEBUG(9381): #02  pc 0002d658  /system/lib/libmedia.so
06-30 14:47:53.483: INFO/DEBUG(9381): code around pc:
06-30 14:47:53.483: INFO/DEBUG(9381): afd113bc e3a02001 ebfffe82 e1a00005 e8bd87f0
06-30 14:47:53.483: INFO/DEBUG(9381): afd113cc 00036024 e92d47f0 e2504000 0a000019
06-30 14:47:53.483: INFO/DEBUG(9381): afd113dc e5946000 e5947000 e2166903 1a000017
06-30 14:47:53.483: INFO/DEBUG(9381): afd113ec e5945000 e1a02004 e2055a02 e1a00005
06-30 14:47:53.483: INFO/DEBUG(9381): afd113fc e3851001 ebffed7f e3500000 13856002
06-30 14:47:53.483: INFO/DEBUG(9381): code around lr:
06-30 14:47:53.483: INFO/DEBUG(9381): afd116e4 e1a03007 e1a02006 e2011001 e1a00004
06-30 14:47:53.483: INFO/DEBUG(9381): afd116f4 ebfffd9a e1a04000 e1a00005 ebffff32
06-30 14:47:53.483: INFO/DEBUG(9381): afd11704 e374006e 03a0006e 13a00000 e8bd81f0
06-30 14:47:53.483: INFO/DEBUG(9381): afd11714 e304cdd3 e3043240 e92d4010 e341c062
06-30 14:47:53.483: INFO/DEBUG(9381): afd11724 e1a0e002 e24dd008 e340300f e1a0200d
06-30 14:47:53.483: INFO/DEBUG(9381): stack:
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9a0  04000804
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9a4  00000001
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9a8  001c6b58
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9ac  00000262
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9b0  0000ee6b
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9b4  afd0fe34  /system/lib/libc.so
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9b8  001edbb0
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9bc  afd13bc1  /system/lib/libc.so
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9c0  001b0470
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9c4  001c6b58
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9c8  00000241
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9cc  3b9aca00
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9d0  00000000
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9d4  00989680
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9d8  df002777
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9dc  e3a070ad
06-30 14:47:53.483: INFO/DEBUG(9381): #00 4670d9e0  00000000
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9e4  4640e000
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9e8  fffffd49
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9ec  4670da18
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9f0  a904cf6a  /system/lib/libmedia.so
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9f4  0000000a
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9f8  a904cfad  /system/lib/libmedia.so
06-30 14:47:53.483: INFO/DEBUG(9381): 4670d9fc  afd11704  /system/lib/libc.so
06-30 14:47:53.483: INFO/DEBUG(9381): #01 4670da00  4640e000
06-30 14:47:53.483: INFO/DEBUG(9381): 4670da04  4640e004
06-30 14:47:53.483: INFO/DEBUG(9381): 4670da08  4670da98
06-30 14:47:53.483: INFO/DEBUG(9381): 4670da0c  000000c8
06-30 14:47:53.483: INFO/DEBUG(9381): 4670da10  a904cf6a  /system/lib/libmedia.so
06-30 14:47:53.483: INFO/DEBUG(9381): 4670da14  a902d65b  /system/lib/libmedia.so

推荐答案

感谢再次指出SIGSEV，我读了一点，因为我不知道它的意思.现在我做:)我同意 CommonsWare 的意见，您应该通知固件的制造商/修改者.但我也认为它不会在有用的时间跨度内进一步帮助你.也许我们会找到一种方法来修改您的代码，从而不再引发错误.

Thanks for pointing out SIGSEV again, i over read it a little because i didn't know its meaning. Now i do :) I agree with CommonsWare that you should inform the manufacturer/modder of the firmware. But i also think it does not help you further in a useful time span. Maybe we find a way to modify your code in a way not to provoke the error anymore.

一般来说，您的代码看起来相当不错.我认为不完全安全和正确的是您停止录音机的方式.

Generally your code looks quite good. What i think is not totally safe and proper is the way you are stopping the recorder.

  1. 我不使用 isRecording 标志，而是使用 isCancelled 标志.所以你记录 while(!isCancelled).当您想停止录制时，只需将 isCancelled 设置为 true 并调用 recorder.stop().
  2. 录音停止后，您可以在录音机线程中的 writeAudioDataToFile() 之后立即调用您的逻辑来显示进度对话框和复制文件.我不会为这些事情使用额外的线程，因为我们仍在录音机线程中，并且您的 UI 没有被阻塞.
  3. 何时调用 recorder.release()，它会释放内存...文档释放原生 AudioRecord 资源".我不知道这是否对问题有影响.在您提供的当前代码中，您调用 recorder.release() 而理论上记录器可以读取(不知道该类是否是线程安全的).也许您也可以在复制所有文件后尝试调用它，即使我认为在记录器真正停止并且您的输出流关闭后应该没问题.

希望我能帮上一点忙，你能找到办法.

Hope i could help a little and you are able to find a way.

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