Is it possible to record audio/ vedio from applet and store it on server
Pls tell me if it is possible to record audio/ vedio from applet and store it on server. I am using JMF. i am able to store audio on the same machine by making a java application but i am not able to understand how to use RTP with it to store it on server from an applet. pls help me i am in urgent need.
If u want to capture audio/video from the client machine these are the pre-requisites
1. u need to have JMF installed on the client :(
one way out of this is that u bundle the library files along ur applet to the client. I am still to figure out how
to fo that.
2. while installation uncheck the option 'copy DLLs to system folder....' and check the option 'Allow capture
from applets.
3. The Applets u create must be signed, for accessing the client resources such as hard drive.
You can then capture n save file on the client, open an inout stream out of it, open an outputstream to the server as already described above and start uploading......
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I don't own an Apple device, but I have purchased an audio album from the iTunes store. How can I play this on my android phone, as I am unable to burn the album to mp3 format? Can I obtain a refund if this is not possible? Thanks
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package com.d2e.MyPlugin;
import com.servoy.j2db.scripting.IScriptObject;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.awt.Button;
import javax.sound.sampled.*;
import org.xiph.speex.*;
import org.xiph.speex.spi.*;
import sun.audio.*; //import the sun.audio package
public class MyPluginProvider implements IScriptObject {
public void JSencode()
throws IOException{
/** Version of the Speex Encoder */
final String VERSION = "Java Speex Command Line Encoder v0.9.7 ($Revision: 1.5 $)";
/** Copyright display String */
final String COPYRIGHT = "Copyright (C) 2002-2004 Wimba S.A.";
/** Print level for messages : Print debug information */
final int DEBUG = 0;
/** Print level for messages : Print basic information */
final int INFO = 1;
/** Print level for messages : Print only warnings and errors */
final int WARN = 2;
/** Print level for messages : Print only errors */
final int ERROR = 3;
int printlevel = INFO;
/** File format for input or output audio file: Raw */
final int FILE_FORMAT_RAW = 0;
/** File format for input or output audio file: Ogg */
final int FILE_FORMAT_OGG = 1;
/** File format for input or output audio file: Wave */
final int FILE_FORMAT_WAVE = 2;
int srcFormat = FILE_FORMAT_OGG;
int destFormat = FILE_FORMAT_WAVE;
int mode = -1;
int quality = 4;
/** Defines the encoders algorithmic complexity. */
int complexity = 3;
/** Defines the number of frames per speex packet. */
int nframes = 1;
/** Defines the desired bitrate for the encoded audio. */
int bitrate = -1;
/** Defines the sampling rate of the audio input. */
int sampleRate = -1;
/** Defines the number of channels of the audio input (1=mono, 2=stereo). */
int channels = 1;
/** Defines the encoder VBR quality setting (float from 0 to 10). */
float vbr_quality = -1;
/** Defines whether or not to use VBR (Variable Bit Rate). */
boolean vbr = false;
/** Defines whether or not to use VAD (Voice Activity Detection). */
boolean vad = false;
/** Defines whether or not to use DTX (Discontinuous Transmission). */
boolean dtx = false;
//HArd code src format and dest
// private String srcPath ="junk.wav";
srcFormat = FILE_FORMAT_WAVE;
destFormat = FILE_FORMAT_OGG;
//destPath="junk.spx";
byte[] temp = new byte[2560]; // stereo UWB requires one to read 2560b
final int HEADERSIZE = 8;
final String RIFF = "RIFF";
final String WAVE = "WAVE";
final String FORMAT = "fmt ";
final String DATA = "data";
final int WAVE_FORMAT_PCM = 0x0001;
// Open the input stream
DataInputStream dis = new DataInputStream(new FileInputStream("junk.wav"));
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// read the WAVE header
dis.readFully(temp, 0, HEADERSIZE+4);
// Read other header chunks
dis.readFully(temp, 0, HEADERSIZE);
String chunk = new String(temp, 0, 4);
int size = readInt(temp, 4);
while (!chunk.equals(DATA)) {
dis.readFully(temp, 0, size);
if (chunk.equals(FORMAT)) {
typedef struct waveformat_extended_tag {
WORD wFormatTag; // format type
WORD nChannels; // number of channels (i.e. mono, stereo...)
DWORD nSamplesPerSec; // sample rate
DWORD nAvgBytesPerSec; // for buffer estimation
WORD nBlockAlign; // block size of data
WORD wBitsPerSample; // Number of bits per sample of mono data
WORD cbSize; // The count in bytes of the extra size
} WAVEFORMATEX;
if (readShort(temp, 0) != WAVE_FORMAT_PCM) {
System.err.println("Not a PCM file");
return;
channels = readShort(temp, 2);
sampleRate = readInt(temp, 4);
if (readShort(temp, 14) != 16) {
System.err.println("Not a 16 bit file " + readShort(temp, 18));
return;
// Display audio info
if (printlevel <= DEBUG) {
System.out.println("File Format: PCM wave");
System.out.println("Sample Rate: " + sampleRate);
System.out.println("Channels: " + channels);
dis.readFully(temp, 0, HEADERSIZE);
chunk = new String(temp, 0, 4);
size = readInt(temp, 4);
if (printlevel <= DEBUG) System.out.println("Data size: " + size);
//DP ENd sort wave file
//Now Choose the mode , we have a file sampled at 44100
mode = 2; // Ultra-wideband
// Construct a new encoder
SpeexEncoder speexEncoder = new SpeexEncoder();
speexEncoder.init(mode, quality, sampleRate, channels);
if (complexity > 0) {
speexEncoder.getEncoder().setComplexity(complexity);
if (bitrate > 0) {
speexEncoder.getEncoder().setBitRate(bitrate);
if (vbr) {
speexEncoder.getEncoder().setVbr(vbr);
if (vbr_quality > 0) {
speexEncoder.getEncoder().setVbrQuality(vbr_quality);
if (vad) {
speexEncoder.getEncoder().setVad(vad);
if (dtx) {
speexEncoder.getEncoder().setDtx(dtx);
// Display info
// Open the file writer
AudioFileWriter writer;
if (destFormat == FILE_FORMAT_OGG) {
writer = new OggSpeexWriter(mode, sampleRate, channels, nframes, vbr);
else if (destFormat == FILE_FORMAT_WAVE) {
nframes = PcmWaveWriter.WAVE_FRAME_SIZES[mode-1][channels-1][quality];
writer = new PcmWaveWriter(mode, quality, sampleRate, channels, nframes, vbr);
else {
writer = new RawWriter();
writer.open("junk.spx");
writer.writeHeader("Encoded with: " + VERSION);
int pcmPacketSize = 2 * channels * speexEncoder.getFrameSize();
try {
// read until we get to EOF
while (true) {
dis.readFully(temp, 0, nframes*pcmPacketSize);
for (int i=0; i<nframes; i++)
speexEncoder.processData(temp, i*pcmPacketSize, pcmPacketSize);
int encsize = speexEncoder.getProcessedData(temp, 0);
if (encsize > 0) {
writer.writePacket(temp, 0, encsize);
catch (EOFException e) {}
writer.close();
dis.close();
* Converts Little Endian (Windows) bytes to an int (Java uses Big Endian).
* @param data the data to read.
* @param offset the offset from which to start reading.
* @return the integer value of the reassembled bytes.
protected static int readInt(final byte[] data, final int offset)
return (data[offset] & 0xff) |
((data[offset+1] & 0xff) << 8) |
((data[offset+2] & 0xff) << 16) |
(data[offset+3] << 24); // no 0xff on the last one to keep the sign
* Converts Little Endian (Windows) bytes to an short (Java uses Big Endian).
* @param data the data to read.
* @param offset the offset from which to start reading.
* @return the integer value of the reassembled bytes.
protected static int readShort(final byte[] data, final int offset)
return (data[offset] & 0xff) |
(data[offset+1] << 8); // no 0xff on the last one to keep the sign
AudioFormat audioFormat;
TargetDataLine targetDataLine;
public Class[] getAllReturnedTypes() {
// TODO Auto-generated method stub
return null;
public String[] getParameterNames(String arg0) {
// TODO Auto-generated method stub
return null;
public String getSample(String arg0) {
// TODO Auto-generated method stub
return null;
public String getToolTip(String arg0) {
// TODO Auto-generated method stub
return null;
public boolean isDeprecated(String arg0) {
// TODO Auto-generated method stub
return false;
public String js_Record (String name){
captureAudio();
return "Started Recording " +name;
public String js_StopRecord (String name) throws IOException{
//new ActionListener(){
// public void actionPerformed(ActionEvent e)
//Terminate the capturing of input data
// from the microphone.
targetDataLine.stop();
targetDataLine.close();
// }//end actionPerformed
//};//end ActionListener
// JSpeexEnc ("junk.wav","output.spx");
JSencode();
return "Stop Records " +name;
//Play audio file
public AudioStream js_Playback (String name) throws IOException{
InputStream in = new FileInputStream("junk.wav");
AudioStream as = new AudioStream(in);
AudioPlayer.player.start(as);
return as;
public AudioStream js_ContPlay (AudioStream as) throws IOException {
AudioPlayer.player.start(as);
return as;
//Stop Play
public AudioStream js_Stop_Playback (AudioStream as) throws IOException{
AudioPlayer.player.stop(as);
return as;
//This method captures audio input from a
// microphone and saves it in an audio file.
private void captureAudio(){
try{
//Get things set up for capture
audioFormat = getAudioFormat();
DataLine.Info dataLineInfo =
new DataLine.Info(
TargetDataLine.class,
audioFormat);
targetDataLine = (TargetDataLine)
AudioSystem.getLine(dataLineInfo);
//Create a thread to capture the microphone
// data into an audio file and start the
// thread running. It will run until the
// Stop button is clicked. This method
// will return after starting the thread.
new CaptureThread().start();
}catch (Exception e) {
e.printStackTrace();
System.exit(0);
}//end catch
}//end captureAudio method
// This method creates and returns an
// AudioFormat object for a given set of format
// parameters. If these parameters don't work
// well for you, try some of the other
// allowable parameter values, which are shown
// in comments following the declarations.
private AudioFormat getAudioFormat(){
float sampleRate = 44100.0F;
//8000,11025,16000,22050,44100
int sampleSizeInBits = 16;
//8,16
int channels = 1;
//1,2
boolean signed = true;
//true,false
boolean bigEndian = true;
//true,false
return new AudioFormat(sampleRate,
sampleSizeInBits,
channels,
signed,
bigEndian);
}//end getAudioFormat
class CaptureThread extends Thread{
public void run(){
AudioFileFormat.Type fileType = null;
File audioFile = null;
//Set the file type and the file extension
// based on the selected radio button.
//if(aifcBtn.isSelected()){
// fileType = AudioFileFormat.Type.AIFC;
// audioFile = new File("junk.aifc");
// }else if(aiffBtn.isSelected()){
// fileType = AudioFileFormat.Type.AIFF;
// audioFile = new File("junk.aif");
// }else if(auBtn.isSelected()){
// fileType = AudioFileFormat.Type.AU;
// audioFile = new File("junk.au");
// }else if(sndBtn.isSelected()){
// fileType = AudioFileFormat.Type.SND;
// audioFile = new File("junk.snd");
// }else if(waveBtn.isSelected()){
fileType = AudioFileFormat.Type.WAVE;
audioFile = new File("junk.wav");
// }//end if
try{
targetDataLine.open(audioFormat);
targetDataLine.start();
AudioSystem.write(
new AudioInputStream(targetDataLine),
fileType,
audioFile);
}catch (Exception e){
e.printStackTrace();
}//end catch
}//end run
}//end inner class CaptureThread
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