Question

我在android中进行环回测试，使用AudioRecorder录制音频，然后将未压缩的pcm编码为speex，之后我将speex解码回pcm并发送给AudioPlayer进行播放。后来我将测试两个设备之间的P2P。我正在尝试录制音频，类似于通话记录，其中将发送者和接收者的声音保存为单个文件mp4格式。任何人都建议我继续前进的良方向，也可以通过ffmpeg移植到Android来实现这一点吗？ / p>

感谢，

Answer 1

我希望它对你有用.. 在“this.path = sanitizePath（path）;在此行”

中设置路径

    public class AudioRecorder
    {
    final MediaRecorder recorder=new MediaRecorder();
    final String path;

    public AudioRecorder(String path) 
        {
        this.path = sanitizePath(path);
        }
private String sanitizePath(String path) 
    {
    if (!path.startsWith("/")) 
        {
      path = "/" + path;
    }
    if (!path.contains("."))   
        {
      path += ".3gp";
    }
    return Environment.getExternalStorageDirectory().getAbsolutePath() + path;
 }
public void start() throws IOException 
    {
    String state = android.os.Environment.getExternalStorageState();
    if(!state.equals(android.os.Environment.MEDIA_MOUNTED))  {
        throw new IOException("SD Card is not mounted.  It is " + state + ".");
}
    File directory = new File(path).getParentFile();
    if (!directory.exists() && !directory.mkdirs()) 
        {
      throw new IOException("Path to file could not be created.");
    }
    recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    recorder.setOutputFile(path);
    recorder.prepare();
    recorder.start();
  }
 public void stop() throws IOException 
     {
        recorder.stop();
        recorder.release();
 }

}

Answer 2

我认为MediaRecorder.AudioSource是一个好的开始吗？

http://developer.android.com/reference/android/media/MediaRecorder.AudioSource.html

如何在android中录制音频？

2 个答案: