我正在使用我自己的应用程序同时播放和捕获音频数据。
我正在使用音乐文件进行播放并捕获该数据以测试android中的渲染延迟，但我正在获得日志
obtainBuffer超时(是CPU挂钩?)
我的文件是:
MainActivity.java
public class MainActivity extends Activity implements OnClickListener {
@SuppressLint("NewApi")
class AudioTask implements Runnable {
/**
* Queue on which audio blocks are placed.
*/
LinkedBlockingQueue<byte[]> mQueue;
VoiceAudioRecord mAudioRecord;
int block_size;
boolean done;
static final int DEFAULT_BLOCK_SIZE = 1024;
AudioTask(LinkedBlockingQueue<byte[]> q, int block_size) {
this.done = false;
mQueue = q;
this.block_size = block_size;
int intSize = android.media.AudioTrack.getMinBufferSize(8000, channelConfig,
audioFormat);
mAudioRecord = new VoiceAudioRecord(8000, intSize, true, true, true);
boolean isAvailable = AcousticEchoCanceler.isAvailable();
Log.i(LOG_TAG, "AEC available : "+isAvailable);
if(mAecToggle.isChecked()) {
Log.i("TOGGLE_BUTTON_AEC", "STARTED AEC PROCESS");
runOnUiThread(new Runnable() {
@Override
public void run() {
int audioId = mAudioRecord.getAudioSessionId();
mAec = AcousticEchoCanceler.create(audioId);
Log.i(LOG_TAG, "AEC created " + mAec);
try {
mAec.setEnabled(true);
Log.i(LOG_TAG, "AEC getEnabled : " + mAec.getEnabled());
} catch (IllegalStateException e) {
Log.i(LOG_TAG, "setEnabled() in wrong state");
e.printStackTrace();
}
}
});
}
}
public void stop() {
this.done = true;
}
public void run() {
if (mAudioRecord.getState() == AudioRecord.STATE_INITIALIZED) {
mAudioRecord.startRecording();
while (!this.done) {
int nshorts = this.readBlock();
if (nshorts == AudioRecord.ERROR_INVALID_OPERATION) {
Log.i("AUDIO_REC","read: ERROR_INVALID_OPERATION");
break;
} else if (nshorts == AudioRecord.ERROR_BAD_VALUE) {
Log.i("AUDIO_REC","read: ERROR_BAD_VALUE");
break;
} else if (nshorts <= 0) {
Log.i("AUDIO_REC","read: " + nshorts);
break;
}
}
mAudioRecord.stop();
} else {
Log.i("AUDIO_REC","AudioRecord not initialized");
}
mAudioRecord.release();
}
private int readBlock() {
byte[] buffer = new byte[this.block_size];
int nshorts = mAudioRecord.read(buffer, 0, buffer.length);
if (nshorts > 0) {
Log.i("AUDIO_REC","Posting " + nshorts + " samples to queue");
mQueue.add(buffer);
}
return nshorts;
}
}
/**
* Audio recording task.
*/
AudioTask mAudioTask;
/**
* Thread associated with recording task.
*/
Thread audio_thread;
/**
* Queue of audio buffers.
*/
LinkedBlockingQueue<byte[]> mAudioQ;
short[] audioShorts, recvShorts, recordedShorts, filteredShorts;
byte[] audioBytes, recvBytes;
int shortsRead;
byte[][] fullTrack;
AudioRecord recorder;
AudioTrack player;
Boolean isInterrupted = true;
int indexOfArray = 0;
// ---------------------------------
@SuppressWarnings("deprecation")
private int channelConfig = AudioFormat.CHANNEL_IN_MONO;
private int audioFormat = AudioFormat.ENCODING_PCM_16BIT;
private Button mRecordButton, mPlayButton;
private boolean isRecording = false;
PlayAudioFile audioFile;
private RecordedAudioFile mRecordedFile;
private MediaPlayer mMediaPlayer;
private AcousticEchoCanceler mAec;
private ToggleButton mAecToggle;
private boolean isPlaying = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRecordButton = (Button)findViewById(R.id.button1);
mRecordButton.setOnClickListener(this);
//findViewById(R.id.button2).setOnClickListener(this);
mPlayButton = (Button)findViewById(R.id.button3);
mPlayButton.setOnClickListener(this);
mPlayButton.setVisibility(View.INVISIBLE);
mAecToggle = (ToggleButton) findViewById(R.id.aecButton);
audioFile = new PlayAudioFile(getApplicationContext());
mAudioQ = new LinkedBlockingQueue<byte[]>();
mRecordedFile = new RecordedAudioFile();
mMediaPlayer = null;
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button1: {
if (isRecording) {
stopRecording();
mRecordButton.setText("Record");
mPlayButton.setVisibility(View.VISIBLE);
mAecToggle.setVisibility(View.VISIBLE);
} else {
new RecordAudio().execute();
if(mMediaPlayer != null) {
mMediaPlayer.stop();
mMediaPlayer.release();
mMediaPlayer = null;
}
mRecordButton.setText("Stop");
mPlayButton.setVisibility(View.INVISIBLE);
mAecToggle.setVisibility(View.INVISIBLE);
playAudio();
}
break;
}
case R.id.button3:
if(!isPlaying) {
playRecordedAudio();
}
break;
default:
break;
}
}
private void playAudio() {
audioFile.playAudio();
}
private void stopRecording() {
assert mAudioTask != null;
mAudioTask.stop();
try {
this.audio_thread.join();
}
catch (InterruptedException e) {
Log.e("AUDIO_REC","Interrupted waiting for audio thread, shutting down");
}
if(mAecToggle.isChecked()) {
if (mAec != null) {
Log.i("AUDIO_REC", "Releasing AEC");
mAec.release();
}
Log.i("TOGGLE_BUTTON_AEC", "COMPLETE AEC PROCESS");
}
isRecording = false;
audioFile.stopAudio();
mRecordedFile.processAndSaveAudioQueue(mAudioQ);
}
private void playRecordedAudio() {
final Thread filePlayThread = new Thread(new Runnable() {
@Override
public void run() {
try {
playAdioTrack(new File(mRecordedFile.getFilename()).getPath());
} catch (IOException e) {
e.printStackTrace();
}
}
},"File Play Thread");
filePlayThread.start();
}
private void playAdioTrack(String filePath) throws IOException
{
// We keep temporarily filePath globally as we have only two sample sounds now..
if (filePath==null)
return;
int intSize = android.media.AudioTrack.getMinBufferSize(44100, aAudioFormat.CHANNEL_IN_STEREO,
AudioFormat.ENCODING_PCM_16BIT);
AudioTrack mAudioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, 44100, AudioFormat.CHANNEL_IN_STEREO,
AudioFormat.ENCODING_PCM_16BIT, intSize, AudioTrack.MODE_STREAM);
if (mAudioTrack ==null){
Log.d("TCAudio", "audio track is not initialised ");
return;
}
int count = 1024 * 1024; // 512 kb
byte[] byteData = null;
File file = null;
file = new File(filePath);
byteData = new byte[(int)count];
FileInputStream in = null;
try {
in = new FileInputStream( file );
} catch (FileNotFoundException e) {
e.printStackTrace();
}
int bytesread = 0, ret = 0;
int size = (int) file.length();
mAudioTrack.play();
isPlaying = true;
while (bytesread < size && isPlaying) {
ret = in.read( byteData,0, count);
if (ret != -1 && mAudioTrack != null) { // Write the byte array to the track
mAudioTrack.write(byteData,0, ret);
bytesread += ret;
} else
break;
}
in.close();
mAudioTrack.release();
}
public class RecordAudio extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... params) {
startRecdording();
return null;
}
}
void startRecdording() {
mAudioTask = new AudioTask(mAudioQ, 1024);
this.audio_thread = new Thread(mAudioTask);
this.audio_thread.start();
isRecording = true;
}
}
PlayAudiofile.java
public class PlayAudioFile {
private Thread filePlayThread = null;
private Context mContext;
private AudioTrack mAudioTrack;
private boolean isPlaying = false;
public PlayAudioFile (Context context) {
this.mContext = context;
}
public void playAudio() {
filePlayThread = new Thread(new Runnable() {
@Override
public void run() {
File f = new File(mContext.getCacheDir()+"/male.wav");
if (!f.exists()) try {
InputStream is = mContext.getAssets().open("male.wav");
int size = is.available();
Log.i("PLAY_AUDIO","size "+size);
byte[] buffer = new byte[size];
is.read(buffer);
is.close();
FileOutputStream fos = new FileOutputStream(f);
fos.write(buffer);
fos.close();
} catch (Exception e) { throw new RuntimeException(e); }
try {
playAdioTrack(f.getPath());
} catch (IOException e) {
e.printStackTrace();
}
}
},"File Play Thread");
filePlayThread.start();
}
private void playAdioTrack(String filePath) throws IOException
{
// We keep temporarily filePath globally as we have only two sample sounds now..
if (filePath==null)
return;
int intSize = android.media.AudioTrack.getMinBufferSize(44100, AudioFormat.CHANNEL_IN_MONO,
AudioFormat.ENCODING_PCM_16BIT);
mAudioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, 44100, AudioFormat.CHANNEL_IN_MONO,
AudioFormat.ENCODING_PCM_16BIT, intSize, AudioTrack.MODE_STREAM);
if (mAudioTrack ==null){
Log.d("TCAudio", "audio track is not initialised ");
return;
}
int count = 512 * 1024; // 512 kb
byte[] byteData = null;
File file = null;
file = new File(filePath);
byteData = new byte[(int)count];
FileInputStream in = null;
try {
in = new FileInputStream( file );
} catch (FileNotFoundException e) {
e.printStackTrace();
}
int bytesread = 0, ret = 0;
int size = (int) file.length();
mAudioTrack.play();
isPlaying = true;
while (bytesread < size && isPlaying) {
ret = in.read( byteData,0, count);
if (ret != -1 && mAudioTrack != null) { // Write the byte array to the track
mAudioTrack.write(byteData,0, ret);
bytesread += ret;
} else
break;
}
in.close();
mAudioTrack.release();
mAudioTrack = null;
}
public void stopAudio () {
if(mAudioTrack == null) return;
mAudioTrack.stop();
isPlaying = false;
}
}
RecordedAudioFile.java
public class RecordedAudioFile {
//variables are declared and defined here
public RecordedAudioFile() {
bufferSize = AudioRecord.getMinBufferSize(RECORDER_SAMPLERATE, RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING);
}
public void processAndSaveAudioQueue(LinkedBlockingQueue<byte[]> audioQ) {
this.mAudioQ = audioQ;
fileWriteThread = new Thread(new Runnable() {
@Override
public void run() {
writeAudioDataToFile();
}
},"File Write Thread");
fileWriteThread.start();
}
private void writeAudioDataToFile(){
byte data[] = new byte[bufferSize];
String filename = getTempFilename();
FileOutputStream os = null;
try {
os = new FileOutputStream(filename);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
int read = 0;
if(null != os){
byte[] buf;
while ((buf = mAudioQ.poll()) != null) {
try {
os.write(buf);
} catch (IOException e) {
e.printStackTrace();
}
}
try {
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
copyWaveFile(getTempFilename(),getFilename());
deleteTempFile();
}
private String getTempFilename(){
//tempfile for storing temporary data
}
private void copyWaveFile(String inFilename,String outFilename){
//we will copy the captured data into a file here
}
private void WriteWaveFileHeader(
FileOutputStream out, long totalAudioLen,
long totalDataLen, long longSampleRate, int channels,
long byteRate) throws IOException {
//writing wave header here to the file
}
public String getFilename(){
//getting the file name for copying the captured data into it
}
private void deleteTempFile() {
File file = new File(getTempFilename());
file.delete();
}
}
VoiceAudioRecord.java
public VoiceAudioRecord(int sampleRateInHz, int bufferSizeInBytes,
boolean noise, boolean gain, boolean echo)
throws IllegalArgumentException {
this(MediaRecorder.AudioSource.MIC, sampleRateInHz,
AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT,
bufferSizeInBytes, noise, gain, echo);
}
......
public VoiceAudioRecord(int audioSource, int sampleRateInHz,
int channelConfig, int audioFormat, int bufferSizeInBytes,
boolean noise, boolean gain, boolean echo)
throws IllegalArgumentException {
super(audioSource, sampleRateInHz, channelConfig, audioFormat,
bufferSizeInBytes);
}
}
我得到这样的日志
W/AudioRecord( 2118): obtainBuffer timed out (is the CPU pegged?) user=00027e84, server=00027e84
W/AudioRecord( 2118): obtainBuffer timed out (is the CPU pegged?) user=00027e84, server=00027e84
W/AudioTrack( 2118): obtainBuffer timed out (is the CPU pegged?) 0x5c2d4d68 name=0x1user=00077730, server=000765c6
W/AudioTrack( 2118): obtainBuffer timed out (is the CPU pegged?) 0x5c2d4d68 name=0x1user=00077730, server=000765c6
W/AudioRecord( 2118): obtainBuffer timed out (is the CPU pegged?) user=00027e84, server=00027e84
W/AudioFlinger( 1371): write blocked for 1817 msecs, 2 delayed writes, thread 0x40ae5008
，然后我的捕获和播放不像我预期的那样好。
即使我将cpu速度设置为高模式，日志也会重复。
可能是什么问题?
我正在使用低速设备，这对我来说不是很好。这就是为什么我得到这个错误。当我在我的设备上升级到最新的android时，我解决了这个问题