Develop Reference

Media Recorder record application audio

I have an application that has a few buttons that have sounds (soundPool) I need to write them down on a flash card I make it through the MediaRecorder but when I run the app and then turn on the record playing and click stop recording application crashes you do not tell me what the problem is?
I expect that in the method recordStop
public class MainActivity extends Activity {
int kickSound;
SoundPool mSoundPool;
AssetManager assets;
private MediaRecorder mediaRecorder;
private MediaPlayer mediaPlayer;
private String fileName;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mSoundPool = new SoundPool(3, AudioManager.STREAM_MUSIC, 0);
assets = getAssets();
kickSound = loadSound("snare_trap.ogg");
ImageButton kick = (ImageButton)this.findViewById(R.id.imageButton1);
kick.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN){
playSound(kickSound);
}
return false;
}
});
fileName = Environment.getExternalStorageDirectory() + "/record.3gpp";
}
protected void playSound(int sound) {
if (sound > 0)
mSoundPool.play(sound, 1, 1, 1, 0, 1);
}
private int loadSound(String fileName) {
AssetFileDescriptor afd = null;
try {
afd = assets.openFd(fileName);
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(this, "Couldn't load file '" + fileName + "'", Toast.LENGTH_SHORT).show();
return -1;
}
return mSoundPool.load(afd, 1);
}
public void recordStart(View v) {
try {
releaseRecorder();
File outFile = new File(fileName);
if (outFile.exists()) {
outFile.delete();
}
mediaRecorder = new MediaRecorder();
mediaRecorder.setAudioSource(AudioManager.STREAM_MUSIC);
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mediaRecorder.setOutputFile(fileName);
mediaRecorder.prepare();
mediaRecorder.start();
} catch (Exception e) {
e.printStackTrace();
}
}
public void recordStop(View v) {
mediaRecorder.stop();
}
public void playStart(View v) {
try {
releasePlayer();
mediaPlayer = new MediaPlayer();
mediaPlayer.setDataSource(fileName);
mediaPlayer.prepare();
mediaPlayer.start();
} catch (Exception e) {
e.printStackTrace();
}
}
public void playStop(View v) {
if (mediaPlayer != null) {
mediaPlayer.stop();
}
}
private void releaseRecorder() {
if (mediaRecorder != null) {
mediaRecorder.release();
mediaRecorder = null;
}
}
private void releasePlayer() {
mediaPlayer.release();
mediaPlayer = null;
}
#Override
protected void onDestroy() {
super.onDestroy();
releasePlayer();
releaseRecorder();
}
}

Why are you releasing the recorder to start out with? Releasing should only be used if you don't want to access the recorder anymore. Try moving the release to the end.

OnBufferingUpdate not being called in MediaPlayer

My OnBufferingUpdate never gets called when I try to use it with my MediaPlayer. I'm using videos saved on my SDcard as the media source. I think this is the source of the problem and I'm wondering if OnBufferingUpdate only works for internet streams. The code I am using is below.
public class FullImageActivity extends Activity implements SurfaceHolder.Callback, OnPreparedListener, OnInfoListener, OnErrorListener, OnBufferingUpdateListener{
private static final String TAG = "MediaPlayer shit";
MediaPlayer player;
SurfaceView surfaceview;
SurfaceHolder surfaceHolder;
int width;
int height;
DisplayImageOptions options;
ViewPager viewpager;
String path;
long id;
String[] projection = { GridviewData.ROWID, GridviewData.BITMAPPATH, GridviewData.VIDEOFILEPATH};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.full_image);
Intent i = getIntent();
id = i.getExtras().getLong("id");
path = i.getExtras().getString("videopath");
surfaceview = (SurfaceView)findViewById(R.id.surfaceview);
surfaceHolder = surfaceview.getHolder();
surfaceHolder.addCallback(this);
}
public void playVideo(){
player = new MediaPlayer();
try {
player.reset();
player.setOnErrorListener(this);
File file = new File(path);
FileInputStream inputStream = new FileInputStream(file);
player.setDataSource(inputStream.getFD());
inputStream.close();
player.setOnBufferingUpdateListener(this);
player.setOnInfoListener(this);
player.setOnPreparedListener(this);
player.setDisplay(surfaceHolder);
player.prepareAsync();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (SecurityException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
protected void onPause() {
surfaceview.setVisibility(View.GONE);
if ( player != null )
{
if ( player.isPlaying() )
player.stop();
player.release();
player = null;
}
super.onPause();
}
#Override
protected void onResume() {
surfaceview.setVisibility(View.VISIBLE);
Log.i(TAG, "In onResume");
super.onResume();
}
#Override
protected void onStop() {
super.onStop();
}
#Override
public void surfaceChanged(SurfaceHolder holder, int arg1, int arg2, int arg3) {
if ( player != null )
{
try {
Log.i(TAG, "In surface change");
player.setDisplay(surfaceHolder);
} catch (Exception e) {
e.printStackTrace();
}
}
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
Log.i(TAG, "in surface created");
playVideo();
}
#Override
public void surfaceDestroyed(SurfaceHolder arg0) {
Log.i(TAG, "Surface destroyed");
if ( player != null )
{
if ( player.isPlaying() )
player.stop();
player.release();
player = null;
} }
#Override
public void onPrepared(MediaPlayer p) {
player.start();
}
#Override
public boolean onError(MediaPlayer arg0, int arg1, int arg2) {
Log.i(TAG, "THERE WAS AN ERROR");
return false;
}
#Override
public void onBufferingUpdate(MediaPlayer mp, int percent) {
if (percent == 50){
Log.i(TAG, "Within bufferingupdate");
}
}

You've answered your own question! :)
onBufferingUpdate() is only called for resources being streamed over a network, so this will not be called for local resources.
http://developer.android.com/reference/android/media/MediaPlayer.OnBufferingUpdateListener.html
Interface definition of a callback to be invoked indicating buffering status of a media resource being streamed over the network.
From the source code:
Called to update status in buffering a media stream received through progressive HTTP download. The received buffering percentage indicates how much of the content has been buffered or played. For example a buffering update of 80 percent when half the content has already been played indicates that the next 30 percent of the content to play has been buffered.

Exception mOnBufferingUpdateListener is null. Failed to send MEDIA_BUFFERING_UPDATE message

I am using the Surface view and want to play the video. But video is not display its giving error message multiple times "mOnBufferingUpdateListener is null. Failed to send MEDIA_BUFFERING_UPDATE message."
Please suggest me to solve this issue.
#SuppressWarnings("deprecation")
private void createSurface() {
try {
holder = surfaceView.getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mMediaPlayer = new MediaPlayer();
mMediaPlayer.setDisplay(holder);
} catch(Exception e) {
Log.v("NB", "Exception at ::" + e.getMessage());
}
}
private void releaseMediaPlayer() {
if (mMediaPlayer != null) {
mMediaPlayer.stop();
mMediaPlayer.release();
mMediaPlayer = null;
}
}
private void playVideo() {
try {
if(videoPath!=null) {
mMediaPlayer.setDataSource(videoPath);
mMediaPlayer.prepare();
}
}
catch (IllegalArgumentException e)
{e.printStackTrace();}
catch (IllegalStateException e)
{e.printStackTrace();}
catch (IOException e)
{e.printStackTrace();}
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mMediaPlayer.start();
mMediaPlayer.setOnCompletionListener(new OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
releaseMediaPlayer();
//finish();
}
});
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
playVideo();
}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
}
#Override
protected void onDestroy() {
super.onDestroy();
releaseMediaPlayer();
}
Thanks in advance.

How do I play a live HTTP audio stream in MediaPlayer on Android?

I want to play a live HTTP stream in my Android app, so I installed the Windows Media Encoder 9 on another PC on the same LAN, and used it to create a live HTTP audio stream.
The live HTTP stream is okay: I tested it, and it can be played by Windows Media Player or VLC on a PC, and can be played by VLC for Android on my mobile.
So, in my Android app, I wrote this code:
private MediaPlayer player = null;
#Override
public void onCreate(Bundle savedInstanceState) {
StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
.detectDiskReads()
.detectDiskWrites()
.detectNetwork() // or .detectAll() for all detectable problems
.penaltyLog()
.build());
StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
.detectLeakedSqlLiteObjects()
//.detectLeakedClosableObjects()
.penaltyLog()
.penaltyDeath()
.build());
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnPlay = (Button)findViewById(R.id.play);
address = (TextView)findViewById(R.id.address);
btnPlay.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
play();
}
});
}
private void play()
{
String serverIp;
serverIp = address.getText().toString(); // get the uri address, for example http://xxx.xxx.xxx.xxx:2340
if (player == null)
{
player = new MediaPlayer();
}
else
{
player.stop();
player.reset();
}
try {
Log.v("", "Init a new MediaPlayer");
player.setAudioStreamType(AudioManager.STREAM_MUSIC);
Log.v("", "Set the stream type to STREAM_MUSIC");
player.setDataSource(this, Uri.parse(serverIp));
Log.v("", "Set the source is " + serverIp);
player.setOnBufferingUpdateListener(this);
player.setOnPreparedListener(this);
player.setOnErrorListener(this);
player.prepareAsync();
Log.v("", "After prepareAsync");
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
Log.v("IllegalArgumentException", e.toString());
} catch (SecurityException e) {
// TODO Auto-generated catch block
Log.v("SecurityException", e.toString());
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
Log.v("IllegalStateException", e.toString());
} catch (IOException e) {
// TODO Auto-generated catch block
Log.v("IOException", e.toString());
} catch (Exception e) {
Log.v("Exception",e.toString());
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
#Override
public void onPrepared(MediaPlayer mp) {
// TODO Auto-generated method stub
try {
Log.v("onPrepared", "After prepareAsync");
mp.start();
}
catch (Exception e) {
Log.v("play", e.toString());
}
}
#Override
public void onBufferingUpdate(MediaPlayer mp, int percent) {
// TODO Auto-generated method stub
Log.v("onBufferingUpdate", "Buffering Update");
}
#Override
public boolean onError(MediaPlayer mp, int what, int extra) {
// TODO Auto-generated method stub
Log.v("MediaPlayer onError", "what=" + what + " extra=" + extra);
return true;
}
But it didn’t work. When I click the play button, nothing happens. But if I input some other URL I found on the internet (for example, http://www.example.com/song.mp3), it works.
So can anyone help me? The Log info is below. My mobile is HTC s710e, and my Android version is 4.0.4.
11-20 22:28:14.137: V/(580): Init a new MediaPlayer
11-20 22:28:14.137: V/(580): Set the stream type tp STREAM_MUSIC
11-20 22:28:14.147: D/MediaPlayer(580): Couldn't open file on client side, trying server side
11-20 22:28:14.178: E/Trace(39): error opening trace file: No such file or directory (2)
11-20 22:28:14.178: V/(580): After prepareAsync
11-20 22:28:14.297: V/ChromiumHTTPDataSource(39): connect on behalf of uid 10044
11-20 22:28:14.339: I/qtaguid(39): Tagging socket 27 with tag 3f500000000(1013) for uid 10044 failed errno=-2
11-20 22:28:14.629: I/ChromiumHTTPDataSourceSupport(39): Server responded with http status 400
11-20 22:28:14.648: I/qtaguid(39): Untagging socket 27 failed errno=-2
11-20 22:28:14.657: I/AwesomePlayer(39): mConnectingDataSource->connect() returned -1004
11-20 22:28:14.657: E/MediaPlayer(580): error (1, -1004)
11-20 22:28:14.667: E/MediaPlayer(580): Error (1,-1004)
11-20 22:28:14.667: V/MediaPlayer onError(580): what=1 extra=-1004

you can play HLS on android 3.0and 3.0 + version, older versions doesnt support HLS. This code below, can work on 3.0 + version. To play video all android version you have to use rtsp streaming or http prograssive download.
Player class
import android.app.Activity;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnBufferingUpdateListener;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnPreparedListener;
import android.media.MediaPlayer.OnVideoSizeChangedListener;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public class VideoPlayerActivity extends Activity implements
OnBufferingUpdateListener, OnCompletionListener,
OnPreparedListener, OnVideoSizeChangedListener, SurfaceHolder.Callback {
private static final String TAG = "MediaPlayerDemo";
private int mVideoWidth;
private int mVideoHeight;
private MediaPlayer mMediaPlayer;
private SurfaceView mPreview;
private SurfaceHolder holder;
private String path;
private Bundle extras;
private static final String MEDIA = "media";
private static final int STREAM_VIDEO = 5;
private boolean mIsVideoSizeKnown = false;
private boolean mIsVideoReadyToBePlayed = false;
/**
*
* Called when the activity is first created.
*/
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
mPreview = (SurfaceView) findViewById(R.id.VideoView);
holder = mPreview.getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
extras = getIntent().getExtras();
}
private void playVideo(Integer Media) {
doCleanUp();
try {
path = "http://www.pocketjourney.com/downloads/pj/video/famous.3gp";
// Create a new media player and set the listeners
mMediaPlayer = new MediaPlayer();
mMediaPlayer.setDataSource(path);
mMediaPlayer.setDisplay(holder);
mMediaPlayer.prepare();
mMediaPlayer.setOnBufferingUpdateListener(this);
mMediaPlayer.setOnCompletionListener(this);
mMediaPlayer.setOnPreparedListener(this);
mMediaPlayer.setOnVideoSizeChangedListener(this);
//mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
} catch (Exception e) {
Log.e(TAG, "error: " + e.getMessage(), e);
}
}
public void onBufferingUpdate(MediaPlayer arg0, int percent) {
Log.d(TAG, "onBufferingUpdate percent:" + percent);
}
public void onCompletion(MediaPlayer arg0) {
Log.d(TAG, "onCompletion called");
}
public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
Log.v(TAG, "onVideoSizeChanged called");
if (width == 0 || height == 0) {
Log.e(TAG, "invalid video width(" + width + ") or height(" + height + ")");
return;
}
mIsVideoSizeKnown = true;
mVideoWidth = width;
mVideoHeight = height;
if (mIsVideoReadyToBePlayed && mIsVideoSizeKnown) {
startVideoPlayback();
}
}
public void onPrepared(MediaPlayer mediaplayer) {
Log.d(TAG, "onPrepared called");
mIsVideoReadyToBePlayed = true;
if (mIsVideoReadyToBePlayed && mIsVideoSizeKnown) {
startVideoPlayback();
}
}
public void surfaceChanged(SurfaceHolder surfaceholder, int i, int j, int k) {
Log.d(TAG, "surfaceChanged called");
}
public void surfaceDestroyed(SurfaceHolder surfaceholder) {
Log.d(TAG, "surfaceDestroyed called");
}
public void surfaceCreated(SurfaceHolder holder) {
Log.d(TAG, "surfaceCreated called");
playVideo(STREAM_VIDEO);
}
#Override
protected void onPause() {
super.onPause();
releaseMediaPlayer();
doCleanUp();
}
#Override
protected void onDestroy() {
super.onDestroy();
releaseMediaPlayer();
doCleanUp();
}
private void releaseMediaPlayer() {
if (mMediaPlayer != null) {
mMediaPlayer.release();
mMediaPlayer = null;
}
}
private void doCleanUp() {
mVideoWidth = 0;
mVideoHeight = 0;
mIsVideoReadyToBePlayed = false;
mIsVideoSizeKnown = false;
}
private void startVideoPlayback() {
Log.v(TAG, "startVideoPlayback");
holder.setFixedSize(mVideoWidth, mVideoHeight);
mMediaPlayer.start();
}
}
Main XML
<VideoView
android:id="#+id/VideoView"
android:layout_width="fill_parent"
android:layout_height="fill_parent" android:layout_weight="1"/>
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" android:layout_weight="1" android:background="#aaaaaa">
</LinearLayout>
</LinearLayout>
And you have to add to your manifest internet permission
uses-permission android:name="android.permission.INTERNET" />

Surface view getting problem

i am new to android, currently doing dynamic multimedia application. For accessing videos, included tappable SurfaceView. whenever playing videos from localhost server, only sound's can visible, there is no visual. i am not sure why this will happen, can anyone guide me how to visualize the video.
if (player == null) {
player = new MediaPlayer();
player.setScreenOnWhilePlaying(true);
} else {
player.stop();
player.reset();
}
player.setDataSource(file);
player.setDisplay(holder);
player.prepareAsync();
//player.setOnBufferingUpdateListener(this);
player.setOnCompletionListener(this);
player.setOnPreparedListener(this);
player.setOnVideoSizeChangedListener(this);
player.setAudioStreamType(AudioManager.STREAM_MUSIC);
Here setDataSoruce (file) is used to get localhost url from existing class using intent.

Check out my Surface View - Playing video tutorial
public class VideoAssetActivity extends Activity implements
TextureView.SurfaceTextureListener {
// Log tag.
private static final String TAG = VideoAssetActivity.class.getName();
// Asset video file name.
private static final String FILE_NAME = "big_buck_bunny.mp4";
// MediaPlayer instance to control playback of video file.
private MediaPlayer mMediaPlayer;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.texture_video_simple);
initView();
}
private void initView() {
TextureView textureView = (TextureView) findViewById(R.id.textureView);
textureView.setSurfaceTextureListener(this);
}
#Override
protected void onDestroy() {
super.onDestroy();
if (mMediaPlayer != null) {
mMediaPlayer.stop();
mMediaPlayer.release();
mMediaPlayer = null;
}
}
#Override
public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int i, int i2) {
Surface surface = new Surface(surfaceTexture);
try {
AssetFileDescriptor afd = getAssets().openFd(FILE_NAME);
mMediaPlayer = new MediaPlayer();
mMediaPlayer.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength());
mMediaPlayer.setSurface(surface);
mMediaPlayer.setLooping(true);
mMediaPlayer.prepareAsync();
// Play video when the media source is ready for playback.
mMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mediaPlayer) {
mediaPlayer.start();
}
});
} catch (IllegalArgumentException e) {
Log.d(TAG, e.getMessage());
} catch (SecurityException e) {
Log.d(TAG, e.getMessage());
} catch (IllegalStateException e) {
Log.d(TAG, e.getMessage());
} catch (IOException e) {
Log.d(TAG, e.getMessage());
}
}
#Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surfaceTexture, int i, int i2) {
}
#Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surfaceTexture) {
return true;
}
#Override
public void onSurfaceTextureUpdated(SurfaceTexture surfaceTexture) {
}
}