We Keep Coding

Getting noise while tryin to stream song to android over tcp

I've made some java code which connects and sends data to my android device over LAN, at the receiver side, the app uses AudioTrack to play the audio.
It seems to be streaming the audio, but the receiver plays back only noise!
Here is my sender code:
MainActivity has the following function -
public void startStream() {
//initiate the audioTrack and play it, then start listening
try {
int minBufferSize = AudioTrack.getMinBufferSize(44100,AudioFormat.CHANNEL_OUT_STEREO,AudioFormat.ENCODING_PCM_16BIT);
audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC,44100, AudioFormat.CHANNEL_OUT_MONO,
AudioFormat.ENCODING_PCM_16BIT, minBufferSize, AudioTrack.MODE_STREAM);
audioTrack.play();
Streamer streamer = new Streamer(MainActivity.this);
streamer.execute();
}catch(Exception e) {
say("mainSuperException");
}
}
This is the Streamer class:
public class Streamer extends AsyncTask<Void, Void, Void> {
MainActivity mainActivity = null;
int i = 0;
Streamer(MainActivity m)
{
mainActivity = m;
}
protected Void doInBackground(Void... p) {
try {
byte[] buffer = new byte[1024];
ServerSocket serverSocket = new ServerSocket(3210);
Socket socket = serverSocket.accept();
DataInputStream input = new DataInputStream(socket.getInputStream());
i = 0;
byte[] size = new byte[4];
input.read(size,0,4);
int s = ByteBuffer.wrap(size).getInt();
//Start streaming the file
while (i<s) {
try {
input.read(buffer,0,1024);
++i;
mainActivity.audioTrack.write(buffer, 0, buffer.length);
Log.d("packetTag", "got "+i);
} catch (IOException e) {
e.printStackTrace();
mainActivity.say("InnerioException");
} catch (IllegalStateException e) {
Log.e("packetTag", e.toString());
mainActivity.say("InnerIllegalStateException");
} catch (Exception e) {
Log.e("InnerSuperException", e.toString());
e.printStackTrace();
mainActivity.say("InnerSuperException");
}
}
} catch (IOException io) {
Log.e("ioexception", io.toString());
mainActivity.say("OuterioException");
} catch (Exception e) {
Log.e("SuperException", e.toString());
e.printStackTrace();
mainActivity.say("OuterSuperException");
}
return null;
}
}
And for the sender I used the following Java code:
public class mainClassSend {
public static void main(String[] s)
{
try {
InputStream songInputStream = new FileInputStream("D:\\song.mp3");
byte[] buffer = new byte[1024];
InetAddress group = InetAddress.getByName("192.168.2.8");
Socket socket = new Socket(group,3210);
int i=0;
byte[] size = ByteBuffer.allocate(4).putInt(3359).array();
socket.getOutputStream().write(size);
//Start streaming the file
while ((songInputStream.read(buffer, 0, buffer.length)) > -1) {
try {
socket.getOutputStream().write(buffer, 0, buffer.length);
++i;
System.out.println(i);
} catch (IOException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
songInputStream.close();
socket.close();
System.out.println(i);
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}
Right now I'm just desperately trying to get this to work, so I've filled in all the values explicitly, even figured out the exact number of frames it sends, and sent that as the size.
It receives the size correctly, and keeps looping till that value, but all I hear is static.
I've looked all over stackOverflow, and tried looking into a lot of java class documentations, can't seem to figure out whats wrong here.

Java, javazoom program for playing MP3 files(AdvancedPlayer), event.getFrame() is giving random things

I'm trying to write a program that plays .mp3 files, playing them works perfectly. But pausing is causing some trouble. When I pause the song (stop the song and ask for the frame) I get an incorrect value.
class PauseStartMP3Test {
private static AdvancedPlayer player;
private static int pausedOnFrame = 0;
private static boolean playing = false;
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
while(true) {
String s = in.next();
if(!s.equals("")) {
if(!playing) {
playing = true;
play();
}
else {
player.stop();
}
}
}
}
public static void play() {
File file = null;
file = new File("C:\\Users\\Remco\\Desktop\\Programming\\musictest/throughglass.mp3");
try {
FileInputStream fis = new FileInputStream(file);
BufferedInputStream bis = new BufferedInputStream(fis);
try {
player = new AdvancedPlayer(bis);
new Thread() {
public void run() {
try {
if(playing) {
player.setPlayBackListener(new PlaybackListener() {
#Override
public void playbackFinished(PlaybackEvent event) {
pausedOnFrame = event.getFrame();
System.out.println(pausedOnFrame);
playing = false;
}
});
player.play(pausedOnFrame, Integer.MAX_VALUE);
}
else {
player.stop();
}
}
catch (Exception e) {
System.out.println(e);
}
}
}.start();
} catch (JavaLayerException ex) {
System.out.println(ex);
}
} catch (FileNotFoundException ex) {
System.out.println(ex);
}
}

AudioRecord not saving

I am trying to record the audio using AudioRecorde.
Though it creates file but could not record it. Please provide some inputs.
private void startRecording(){
recorder = new AudioRecord(MediaRecorder.AudioSource.MIC,44100,AudioFormat.CHANNEL_IN_MONO,AudioFormat.ENCODING_PCM_16BIT,AudioRecord.getMinBufferSize(44100, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT));
try {
recorder.startRecording();
} catch (IllegalStateException e) {
e.printStackTrace();
}
}
At the time of stoprecording
private void stopRecording(){
if(null != recorder){
recorder.stop();
recorder.release();
FileOutputStream fOut = null;
try{
int buffSize = AudioRecord.getMinBufferSize(44100, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT);
//ByteBuffer buffer = ByteBuffer.allocate(AudioRecord.getMinBufferSize(44100, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT));
byte b[] = new byte[buffSize];
recorder.read(b,0,buffSize);
//getFilename() will get the file
fOut = new FileOutputStream(getFilename());
fOut.write(b);
}catch(Exception e){
e.printStackTrace();
}finally{
if(fOut != null){
try {
fOut.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
recorder = null;
}
}
It creates a file with buffsize but could not play it.
Here is the code for playing the file
private void startPlaying() {
mPlayer = new MediaPlayer();
if(playing){
playing = false;
}else{
try {
File myFile = new File(prevFile);
txtStatus.setText("Playing...");
imgStatus.setVisibility(View.VISIBLE);
imgStatus.setBackgroundDrawable(getResources().getDrawable(R.drawable.play_small));
if(myFile.exists()){
System.out.println("file is exist");
}else{
System.out.println("file is not exist");
}
mPlayer.setDataSource(prevFile);
System.out.println("file path is is ::> " + prevFile);
mPlayer.prepare();
mPlayer.start();
playing = true;
} catch (IOException e) {
e.printStackTrace();
write.saveToFile(getApplicationContext(), "prepare() failed"+"\n");
}
}
}

program to show a progress bar while transferring all files from one server to another in java

i have written a java code to transfer files from one server to another using the concept of socket programming. now in the same code i also want to check for the network connection availability before each file is transferred. i also want that the files transferred should be transferred according to their numerical sequence. And while the files are being transferred the transfer progress of each file i.e the progress percentage bar should also be visible on the screen.
i will really appreciate if someone can help me with the code. i am posting the code i have written for file transfer.
ClientMain.java
import java.io.*;
import java.net.Socket;
import java.net.SocketException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
public class ClientMain {
private DirectoryTxr transmitter = null;
Socket clientSocket = null;
private boolean connectedStatus = false;
private String ipAddress;
String srcPath = null;
String dstPath = "";
public ClientMain() {
}
public void setIpAddress(String ip) {
this.ipAddress = ip;
}
public void setSrcPath(String path) {
this.srcPath = path;
}
public void setDstPath(String path) {
this.dstPath = path;
}
private void createConnection() {
Runnable connectRunnable = new Runnable() {
public void run() {
while (!connectedStatus) {
try {
clientSocket = new Socket(ipAddress, 3339);
connectedStatus = true;
transmitter = new DirectoryTxr(clientSocket, srcPath, dstPath);
} catch (IOException io) {
io.printStackTrace();
}
}
}
};
Thread connectionThread = new Thread(connectRunnable);
connectionThread.start();
}
public static void main(String[] args) {
ClientMain main = new ClientMain();
main.setIpAddress("10.6.3.92");
main.setSrcPath("E:/temp/movies/");
main.setDstPath("D:/tcp/movies");
main.createConnection();
}
}
(DirectoryTxr.java)
import java.io.*;
import java.net.Socket;
import java.net.SocketException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
public class DirectoryTxr {
Socket clientSocket = null;
String srcDir = null;
String dstDir = null;
byte[] readBuffer = new byte[1024];
private InputStream inStream = null;
private OutputStream outStream = null;
int state = 0;
final int permissionReqState = 1;
final int initialState = 0;
final int dirHeaderSendState = 2;
final int fileHeaderSendState = 3;
final int fileSendState = 4;
final int fileFinishedState = 5;
private boolean isLive = false;
private int numFiles = 0;
private int filePointer = 0;
String request = "May I send?";
String respServer = "Yes,You can";
String dirResponse = "Directory created...Please send files";
String fileHeaderRecvd = "File header received ...Send File";
String fileReceived = "File Received";
String dirFailedResponse = "Failed";
File[] opFileList = null;
public DirectoryTxr(Socket clientSocket, String srcDir, String dstDir) {
try {
this.clientSocket = clientSocket;
inStream = clientSocket.getInputStream();
outStream = clientSocket.getOutputStream();
isLive = true;
this.srcDir = srcDir;
this.dstDir = dstDir;
state = initialState;
readResponse(); //starting read thread
sendMessage(request);
state = permissionReqState;
} catch (IOException io) {
io.printStackTrace();
}
}
private void sendMessage(String message) {
try {
sendBytes(request.getBytes("UTF-8"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
/**
* Thread to read response from server
*/
private void readResponse() {
Runnable readRunnable = new Runnable() {
public void run() {
while (isLive) {
try {
int num = inStream.read(readBuffer);
if (num > 0) {
byte[] tempArray = new byte[num];
System.arraycopy(readBuffer, 0, tempArray, 0, num);
processBytes(tempArray);
}
} catch (SocketException se) {
System.exit(0);
} catch (IOException io) {
io.printStackTrace();
isLive = false;
}
}
}
};
Thread readThread = new Thread(readRunnable);
readThread.start();
}
private void sendDirectoryHeader() {
File file = new File(srcDir);
if (file.isDirectory()) {
try {
String[] childFiles = file.list();
numFiles = childFiles.length;
String dirHeader = "$" + dstDir + "#" + numFiles + "&";
sendBytes(dirHeader.getBytes("UTF-8"));
} catch (UnsupportedEncodingException en) {
en.printStackTrace();
}
} else {
System.out.println(srcDir + " is not a valid directory");
}
}
private void sendFile(String dirName) {
File file = new File(dirName);
if (!file.isDirectory()) {
try {
int len = (int) file.length();
int buffSize = len / 8;
//to avoid the heap limitation
RandomAccessFile raf = new RandomAccessFile(file, "rw");
FileChannel channel = raf.getChannel();
int numRead = 0;
while (numRead >= 0) {
ByteBuffer buf = ByteBuffer.allocate(1024 * 100000);
numRead = channel.read(buf);
if (numRead > 0) {
byte[] array = new byte[numRead];
System.arraycopy(buf.array(), 0, array, 0, numRead);
sendBytes(array);
}
}
System.out.println("Finished");
} catch (IOException io) {
io.printStackTrace();
}
}
}
private void sendHeader(String fileName) {
try {
File file = new File(fileName);
if (file.isDirectory())
return;//avoiding child directories to avoid confusion
//if want we can sent them recursively
//with proper state transitions
String header = "&" + fileName + "#" + file.length() + "*";
sendHeader(header);
sendBytes(header.getBytes("UTF-8"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
private void sendBytes(byte[] dataBytes) {
synchronized (clientSocket) {
if (outStream != null) {
try {
outStream.write(dataBytes);
outStream.flush();
} catch (IOException io) {
io.printStackTrace();
}
}
}
}
private void processBytes(byte[] data) {
try {
String parsedMessage = new String(data, "UTF-8");
System.out.println(parsedMessage);
setResponse(parsedMessage);
} catch (UnsupportedEncodingException u) {
u.printStackTrace();
}
}
private void setResponse(String message) {
if (message.trim().equalsIgnoreCase(respServer) && state == permissionReqState) {
state = dirHeaderSendState;
sendDirectoryHeader();
} else if (message.trim().equalsIgnoreCase(dirResponse) && state == dirHeaderSendState) {
state = fileHeaderSendState;
if (LocateDirectory()) {
createAndSendHeader();
} else {
System.out.println("Vacant or invalid directory");
}
} else if (message.trim().equalsIgnoreCase(fileHeaderRecvd) && state == fileHeaderSendState) {
state = fileSendState;
sendFile(opFileList[filePointer].toString());
state = fileFinishedState;
filePointer++;
} else if (message.trim().equalsIgnoreCase(fileReceived) && state == fileFinishedState) {
if (filePointer < numFiles) {
createAndSendHeader();
}
System.out.println("Successfully sent");
} else if (message.trim().equalsIgnoreCase(dirFailedResponse)) {
System.out.println("Going to exit....Error ");
// System.exit(0);
} else if (message.trim().equalsIgnoreCase("Thanks")) {
System.out.println("All files were copied");
}
}
private void closeSocket() {
try {
clientSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
private boolean LocateDirectory() {
boolean status = false;
File file = new File(srcDir);
if (file.isDirectory()) {
opFileList = file.listFiles();
numFiles = opFileList.length;
if (numFiles <= 0) {
System.out.println("No files found");
} else {
status = true;
}
}
return status;
}
private void createAndSendHeader() {
File opFile = opFileList[filePointer];
String header = "&" + opFile.getName() + "#" + opFile.length() + "*";
try {
state = fileHeaderSendState;
sendBytes(header.getBytes("UTF-8"));
} catch (UnsupportedEncodingException e) {
}
}
private void sendListFiles() {
createAndSendHeader();
}
}
(ServerMain.java)
public class ServerMain {
public ServerMain() {
}
public static void main(String[] args) {
DirectoryRcr dirRcr = new DirectoryRcr();
}
}
(DirectoryRcr.java)
import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
public class DirectoryRcr {
String request = "May I send?";
String respServer = "Yes,You can";
String dirResponse = "Directory created...Please send files";
String dirFailedResponse = "Failed";
String fileHeaderRecvd = "File header received ...Send File";
String fileReceived = "File Received";
Socket socket = null;
OutputStream ioStream = null;
InputStream inStream = null;
boolean isLive = false;
int state = 0;
final int initialState = 0;
final int dirHeaderWait = 1;
final int dirWaitState = 2;
final int fileHeaderWaitState = 3;
final int fileContentWaitState = 4;
final int fileReceiveState = 5;
final int fileReceivedState = 6;
final int finalState = 7;
byte[] readBuffer = new byte[1024 * 100000];
long fileSize = 0;
String dir = "";
FileOutputStream foStream = null;
int fileCount = 0;
File dstFile = null;
public DirectoryRcr() {
acceptConnection();
}
private void acceptConnection() {
try {
ServerSocket server = new ServerSocket(3339);
socket = server.accept();
isLive = true;
ioStream = socket.getOutputStream();
inStream = socket.getInputStream();
state = initialState;
startReadThread();
} catch (IOException io) {
io.printStackTrace();
}
}
private void startReadThread() {
Thread readRunnable = new Thread() {
public void run() {
while (isLive) {
try {
int num = inStream.read(readBuffer);
if (num > 0) {
byte[] tempArray = new byte[num];
System.arraycopy(readBuffer, 0, tempArray, 0, num);
processBytes(tempArray);
}
sleep(100);
} catch (SocketException s) {
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException i) {
i.printStackTrace();
}
}
}
};
Thread readThread = new Thread(readRunnable);
readThread.start();
}
private void processBytes(byte[] buff) throws InterruptedException {
if (state == fileReceiveState || state == fileContentWaitState) {
//write to file
if (state == fileContentWaitState)
state = fileReceiveState;
fileSize = fileSize - buff.length;
writeToFile(buff);
if (fileSize == 0) {
state = fileReceivedState;
try {
foStream.close();
} catch (IOException io) {
io.printStackTrace();
}
System.out.println("Received " + dstFile.getName());
sendResponse(fileReceived);
fileCount--;
if (fileCount != 0) {
state = fileHeaderWaitState;
} else {
System.out.println("Finished");
state = finalState;
sendResponse("Thanks");
Thread.sleep(2000);
System.exit(0);
}
System.out.println("Received");
}
} else {
parseToUTF(buff);
}
}
private void parseToUTF(byte[] data) {
try {
String parsedMessage = new String(data, "UTF-8");
System.out.println(parsedMessage);
setResponse(parsedMessage);
} catch (UnsupportedEncodingException u) {
u.printStackTrace();
}
}
private void setResponse(String message) {
if (message.trim().equalsIgnoreCase(request) && state == initialState) {
sendResponse(respServer);
state = dirHeaderWait;
} else if (state == dirHeaderWait) {
if (createDirectory(message)) {
sendResponse(dirResponse);
state = fileHeaderWaitState;
} else {
sendResponse(dirFailedResponse);
System.out.println("Error occurred...Going to exit");
System.exit(0);
}
} else if (state == fileHeaderWaitState) {
createFile(message);
state = fileContentWaitState;
sendResponse(fileHeaderRecvd);
} else if (message.trim().equalsIgnoreCase(dirFailedResponse)) {
System.out.println("Error occurred ....");
System.exit(0);
}
}
private void sendResponse(String resp) {
try {
sendBytes(resp.getBytes("UTF-8"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
private boolean createDirectory(String dirName) {
boolean status = false;
dir = dirName.substring(dirName.indexOf("$") + 1, dirName.indexOf("#"));
fileCount = Integer.parseInt(dirName.substring(dirName.indexOf("#") + 1, dirName.indexOf("&")));
if (new File(dir).mkdir()) {
status = true;
System.out.println("Successfully created directory " + dirName);
} else if (new File(dir).mkdirs()) {
status = true;
System.out.println("Directories were created " + dirName);
} else if (new File(dir).exists()) {
status = true;
System.out.println("Directory exists" + dirName);
} else {
System.out.println("Could not create directory " + dirName);
status = false;
}
return status;
}
private void createFile(String fileName) {
String file = fileName.substring(fileName.indexOf("&") + 1, fileName.indexOf("#"));
String lengthFile = fileName.substring(fileName.indexOf("#") + 1, fileName.indexOf("*"));
fileSize = Integer.parseInt(lengthFile);
dstFile = new File(dir + "/" + file);
try {
foStream = new FileOutputStream(dstFile);
System.out.println("Starting to receive " + dstFile.getName());
} catch (FileNotFoundException fn) {
fn.printStackTrace();
}
}
private void writeToFile(byte[] buff) {
try {
foStream.write(buff);
} catch (IOException io) {
io.printStackTrace();
}
}
private void sendBytes(byte[] dataBytes) {
synchronized (socket) {
if (ioStream != null) {
try {
ioStream.write(dataBytes);
} catch (IOException io) {
io.printStackTrace();
}
}
}
}
}
ClientMain.java and DirectoryTxr.java are the two classes under client application. ServerMain.java and DirectoryRcr.java are the two classes under Server application.
run the ClientMain.java and ServerMain.java

You can sort an array using Arrays.sort(...)
ie
String[] childFiles = file.list();
Arrays.sort(childFiles);
As I understand it, this will sort the files in natural order, based on the file name.
You can modify this by passing a custom Comparator...
Arrays.sort(childFiles, new Comparator<File>() {...}); // Fill out with your requirements...
Progress monitoring will come down to your requirements. Do you want to see only the overall progress of the number of files, the individual files, a combination of both?
What I've done in the past is pre-iterated the file list, calculated the total number of bytes to be copied and used a ProgressMonitor to display the overall bytes been copied...
Otherwise you will need to supply your own dialog. In either case, you will need use SwingUtilities.invokeLater to update them correctly.
Check out Concurrency in Swing for more details.
Network connectivity is subjective. You could simply send a special "message" to there server and wait for a response, but this only suggests that the message was sent and a recipt was received. It could just as easily fail when you start transfering the file again...

Audio on J2ME, I don't know where is wrong?

I want to do 2 task at same time:
Play an audio file.
Read raw data of it to do something
Here is my code:
String wavPath = "file:///" + currentPath + fileName;
FileConnection fc;
try {
fc = (FileConnection) Connector.open( wavPath );
if ( !fc.exists() ) {
throw new IOException( "File does not exists." );
}
InputStream is = fc.openInputStream();
// to do something with raw data as print samples of it
Player player = Manager.createPlayer( wavPath );
player.realize();
player.prefetch();
player.start();
} catch ( IOException e1 ) {
e1.printStackTrace();
}
But nothing run, audio file doesn't not run. If I remove line:
InputStream is = fc.openInputStream();
Audio file run very well. But I want to do 2 task at same time, i don't know how to do it. Anybody can help me ?
I have tried use 2 thread, but it still doesn't work, audio file run (thread 1) but thread 2 not run:
new Thread( new Runnable() {
public void run() {
try {
Manager.createPlayer( "file:///E:/" + fileName ).start();
} catch ( MediaException e ) {
e.printStackTrace();
} catch ( IOException e ) {
e.printStackTrace();
}
}
}).start();
new Thread( new Runnable() {
public void run() {
FileConnection fc;
try {
fc = (FileConnection) Connector.open( "file:///E:/" + fileName );
InputStream is = fc.openInputStream();
byte[] b = new byte[10];
int length = is.read( b, 0, 10 );
for ( int i = 0; i < length; i++ ) {
form.append( b[i] + "" );
}
} catch ( IOException e ) {
e.printStackTrace();
}
}
}).start();

why don't you use threading...
create a thread to play the wav file
and use another thread to do read a file...
refer here for further details on threading in J2ME
public class View_PlayMidlet extends MIDlet {
PlayerThread musicPlayer = new PlayerThread();
public void startApp() {
String fileName = "file://e:/abcd.wav";
musicPlayer.setPlayableFile(fileName);
FileConnection fc = null;
InputStream is = null;
String fileContent = null;
try {
fc = (FileConnection) Connector.open("file:///E:/" + fileName);
is = fc.openInputStream();
byte[] b = new byte[10];
int length = is.read(b, 0, 10);
fileContent = new String(b);
// display the content of fileContent variable in a form.
} catch (Exception e) {
e.printStackTrace();
} finally {
if (is != null) {
try {
is.close();
} catch (IOException ex) {
}
}
if (fc != null) {
try {
fc.close();
} catch (IOException ex) {
}
}
}
// by this time the file is displayed & you can start playing the file.
Thread t = new Thread(musicPlayer);
t.start();
}
public void pauseApp() {
}
public void destroyApp(boolean unconditional) {
}
}
public class PlayerThread implements Runnable {
private String fileName;
private Player player;
public PlayerThread() {
}
public void run() {
try {
player = Manager.createPlayer(fileName);
player.prefetch();
player.start();
} catch (Exception e) {
e.printStackTrace();
}
}
public void stopMusic() {
try {
player.stop();
} catch (Exception e) {
e.printStackTrace();
}
}
public void setPlayableFile(String fileName) {
this.fileName=fileName;
}
}
this would roughly be what you are looking for.

Your Player instances are garbage collected. Also, file access during playback will likely be 'implementation specific', meaning that it will work on some models and not others. So read the data first, copy it to another file etc, if you want something solid.
You can always go the DataSource-path too.