[英]How to record audio in android?
I am doing a loopback test in android, which record's audio using AudioRecorder then encode the uncompressed pcm into speex after that i decode speex back to pcm and given to AudioPlayer for playing .Later case i will test between two devices P2P . 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。 I am trying to record audio , similar to call recording in which save both sender and receiver voide into a single file mp4 format .Can anybody suggest me a good direction to proceed and also is it possible to achieve this through ffmpeg ported for android?
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,也可以通过移植到Android的ffmpeg来实现这一点吗?
thanks, 谢谢,
i hope it will work for you.. set your path in" this.path = sanitizePath(path); in this line" 我希望它能为你工作..在“this.path = sanitizePath(path);在这一行中设置你的路径”
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();
}
} }
MediaRecorder.AudioSource is a good start I guess? MediaRecorder.AudioSource是一个好的开始,我猜?
http://developer.android.com/reference/android/media/MediaRecorder.AudioSource.html http://developer.android.com/reference/android/media/MediaRecorder.AudioSource.html
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