To stream audio file I have implemented following code. But i am getting Exception:
javax.sound.sampled.UnsupportedAudioFileException: could not get audio input stream from input file
at javax.sound.sampled.AudioSystem.getAudioInputStream(AudioSystem.java:1170)
Can Any one help me please......
try {
// From file
System.out.println("hhhhhhhhhhhhhhhh");
AudioInputStream stream = AudioSystem.getAudioInputStream(new File("C:\\track1.mp3"));
System.out.println("stream created");
AudioFormat format = stream.getFormat();
if (format.getEncoding() != AudioFormat.Encoding.PCM_SIGNED) {
System.out.println("in if");
format = new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED,
format.getSampleRate(),
format.getSampleSizeInBits()*2,
format.getChannels(),
format.getFrameSize()*2,
format.getFrameRate(),
true); // big endian
stream = AudioSystem.getAudioInputStream(format, stream);
}
// Create line
SourceDataLine.Info info = new DataLine.Info(
SourceDataLine.class, stream.getFormat(),
((int)stream.getFrameLength()*format.getFrameSize()));
SourceDataLine line = (SourceDataLine) AudioSystem.getLine(info);
line.open(stream.getFormat());
line.start();
// Continuously read and play chunks of audio
int numRead = 0;
byte[] buf = new byte[line.getBufferSize()];
while ((numRead = stream.read(buf, 0, buf.length)) >= 0) {
int offset = 0;
while (offset < numRead) {
offset += line.write(buf, offset, numRead-offset);
}
}
line.drain();
line.stop();
}
That you're doing this job in a servlet class gives me the impression that your intent is to play the mp3 file whenever someone visits your website and that the visitor should hear this mp3 file.
If true, I'm sorry to say, but you're approaching this entirely wrong. Java servlet code runs in webserver machine and not in webbrowser machine. Whenever someone visits your website, this way the mp3 file would only be played at the webserver machine. This is usually a physically completely different machine which runs at the other side of the network connection and the visitor ain't ever going to hear the music.
You want to send the mp3 file raw (unmodified byte by byte) from webserver to the webbrowser without massaging it by some Java Audio API and instruct the webbrowser to play this file. The easist way is to just drop the mp3 file in public webcontent (there where your HTML/JSP files also are) and use HTML <embed> tag to embed it in your HTML/JSP file. The below example assumes the MP3 file to be in the same folder as the HTML/JSP file:
<embed src="file.mp3" autostart="true"></embed>
That's all and this is supported in practically every browser and it will show a player as well.
If the MP3 file is by business requirement stored outside public webcontent, then you may indeed need a servlet for this, but the servlet should do absolutely nothing more than getting an InputStream of it in some way and write it unmodified to the OutputStream of the HttpServletResponse the usual Java IO way. You only need to set the HTTP Content-Type header to audio/mpeg beforehand and if possible also the HTTP Content-Length header. Then point the src to the servlet's URL instead.
<embed src="mp3servlet" autostart="true"></embed>
Default java AudioInputStream does not support mp3 files. You have to plug in MP3SPI to let it decode mp3.
ALso, what do you mean by streaming? This code will play the audio file, not stream it as in internet radio streaming.
Related
I am using xuggler to transcode videos into different formats.
If I open my IContainer directly from a file, it works perfectly, however, this time I want to open IContainer use an InputStream. Strange thing is I tried to open a mp4 format video via FileInputStream, the IContainer can be opened using this FileInputStream, but I cannot read Ipacket in this stream. Can someone give me some suggestions? Did miss something? I really need my xuggler to deal with streams
public static void main(String[] args) throws IOException {
//the file input stream
FileInputStream fi = new FileInputStream("test.mp4");
//icontainer format
IContainerFormat format = IContainerFormat.make();
format.setInputFormat("mp4");
IContainer container = IContainer.make();
//open container via FileInputStream
int data = container.open(fi, format);
IPacket packet = IPacket.make();
//read packet
int info = container.readNextPacket(packet);
System.out.println(data);
System.out.println(info);
}
results
data: 0
info: -1094995529
According to IError, an unknown error here when I tried to read a packet. I'm using xuggler 5.4
First of all, streams must be seekable(like FSDataInputStream in hadoop), otherwise Xuggler cannot handle it, FileInputStream is not such kind of stream, sad.... Actually, seek() function is important for Xuggler to read a media file
Now, to work on seekable stream.
I have found solution, Xuggler actually can handle streams via IURLPROTOCOLHANDLER, I created my custom class which implements iurlprotocolhandler and it "works".
I learned from this Example, which use stream FSDataInputStream.
I am building a speech synthesizer, and everything works except the audio. I have a list of phonemes that are stored as .wav files, and I am calling them with AudioInputStreams, but they won't repeat. I have no idea what could be the issue, so any help would be appreciated.
The code that initializes a HashMap full of phones is
for(File phone : listOfFiles){
String path = phone.getPath();
if(path.startsWith(".")){continue;}
path = path.replace(".wav", "").replace("phones/", "");
AudioInputStream clip1 = AudioSystem.getAudioInputStream(phone);
phonemes.put(path,clip1);
}
and the code that combines and outputs the sound is
public void speak(String[] input){
AudioInputStream phrase = phonemes.get(input[0]);
AudioInputStream phone;
int x = input.length;
for(int i=1; i<input.length; i++){
phone = phonemes.get(input[i]);
phrase = new AudioInputStream(new SequenceInputStream(phrase, phone), phrase.getFormat(), phrase.getFrameLength() + phone.getFrameLength());
}
try {
Clip clip = AudioSystem.getClip();
clip.open(phrase);
clip.start();
} catch (Exception e) {
e.printStackTrace();
}
}
To replay a Clip, you have to stop it and reposition it, then start it. I don't think you can close and reopen a given Clip. But attempts to do that should have generated a LineUnavailable exception, and you say you got no exceptions.
To troubleshoot, I'd first verify that it is possible to play the .wav files prior to placing them in the hash table. Sometimes an unexpected format (e.g., 24-bit or 32-bit encoding, or big-endian rather than little-endian) can lead to .wav files not playing.
If you are trying to concatenate a series of clips or audio data into a single clip, that could also be problematic. I think that AudioInputStream expects a single set of "header" data from the .wav file, but the SequenceInputStream could in effect be sending multiple "headers", one for each source file. I've never seen concatenation attempted like that before.
You might need to make your own data storage for the raw audio for each phoneme, and then build your combined phonemes from that rather than directly from .wav files. Instead of loading to Clips, load the raw PCM from the AudioInputStream into byte arrays. To output the raw audio bytes, you can use a SourceDataLine.
I'm trying to create copy of a mp3 file.This I need to trim that mp3 file.So using input,output stream can be used to this I guess.Can the normal text file type of copying will be able to create a file that could be played .Someone with good knowledge of file handling in java help me in this.
MP3 file is binary file. So as long as you copy MP3 using binary file operations copy will succeed.
However to trim an MP3 file, you need to be aware of MP3 file structure. MP3 file consists of series of MP3 frames. Each frame starts with a MP3 header and followed by data. MP3 frame header contains information, using which you can find frame length.
More details on MP3 header at http://www.id3.org/mp3Frame
So as long as you copy at integral number of frames, you should be okay. Even otherwise, decoders will ignore incomplete frame.
Below code is a solution to copy an mp3 file or everything else. I have never experienced the trimming part. However, I think it is logically possible to trim your file just by specifying the amount of buffer you need.)
Actually dst is the name of the copied file in the directory.
private void copyFile(String src, String dst) {
FileInputStream inputStream; // create an input stream
FileOutputStream outputStream; // create an output stream
try {
inputStream = new FileInputStream(src); // create object
outputStream = openFileOutput(dst, Context.MODE_PRIVATE); // save your file in private mode, which makes it inaccessible by other applications
int bufferSize;
byte[] bufffer = new byte[512]; // I think logically here could be useful for trimming the file. I mean just copy an specified part of the file.
while ((bufferSize = inputStream.read(bufffer)) > 0) {
outputStream.write(bufffer, 0, bufferSize);
}
inputStream.close();
outputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
}
This is a suggestion about how to copy your files, which it will copy them in internal storage under your application package name. Moreover, I have not tested the trim part yet. So, I am not sure about that.
One more thing, you can get the path directory of your application by
getFilesDir();
Our current project requires us to send an audio file to the server and then use the audio file for further computation.
Using the Java sound api, I was able to capture the recording and save it as a wav file in my system. Then in order to pass the audio wav to the server, I am using Apache Commons HttpClient to post a request to the server. (I am using InputstreamEntity provided by apache and sending the data as a chunk).
The problem appears when i am trying to recreate/retrieve the wav file on the server. I understand that I would have to use the AudioSystem.write API to create the wav file (exactly as what was done on my system). However what I observe is that althought the file gets created , it does not play (I am using vlc media player to test it FYI). I have searched in Google for sample codes and have tried to implement it, but is unable to play it once the file gets created.
The sample code snippets indicates the approaches i have tried:
//******************************************************************
try {
InputStream is = request.getInputStream();
FileOutputStream fs = new FileOutputStream("output123.wav");
byte[] tempbuffer = new byte[4096];
int bytesRead;
while((bytesRead=is.read(tempbuffer))!=-1)
{
fs.write(tempbuffer, 0,bytesRead);
}
is.close();
fs.close();
AudioInputStream inputStream =AudioSystem.getAudioInputStream(newFile("output123.wav"));
int numofbytes = inputStream.available();
byte[] buffer = new byte[numofbytes];
inputStream.read(buffer);
int bytesWritten = AudioSystem.write(inputStream, AudioFileFormat.Type.WAVE,new File("outputtest.wav"));
System.out.println("written"+bytesWritten);
Approach 2
InputStream is = request.getInputStream();
System.out.println("inputStream obtained : "+is.toString());
ByteArrayInputStream bais = null;
byte[] audioBuffer = IOUtils.toByteArray(is);
System.out.println(" is audioBuffer empty? : length = ? "+audioBuffer.length);
try {
AudioFileFormat ai = AudioSystem.getAudioFileFormat(is);
System.out.println("ai bytelength ? "+ai.getByteLength());
System.out.println("ai frame length = "+ai.getFrameLength());
Set<Map.Entry<String,Object>> audioProperties = ai.getFormat().properties().entrySet();
System.out.println("entry set is empty ? "+audioProperties.isEmpty());
for(Map.Entry me : audioProperties){
System.out.println("key = "+me.getKey());
System.out.println("value ="+me.getValue());}
bais = new ByteArrayInputStream(audioBuffer);
AudioInputStream ais = new AudioInputStream(bais, new AudioFormat(8000,8,2,true,true), 2);
AudioSystem.write(ais, AudioFileFormat.Type.WAVE,new File("testtest.wav"));
//*************************************************************************************
The audioFormat properties all turned out to be null. Are these null values giving the problem? So while creating the wave file on the server, I tried to set the properties manually once again. But even then the wav file would not play.
I have also tried quite a few approaches already mentioned on this site, but somehow they aren't working. I am sure i am missing something, but I am unable to pinpoint the exact problem.
Would be really helpful, if you guys can point out how to go about the conversion from ServletInputStream to getting a wav.
P.S (1) I know the code is shabby, because i have been under a trial and error situation for quite some time now. But I will give more details on the approaches if needed.
2) Apologise for the clumsiness, this happens to be my first post.. )
this is not how you copy a stream (from Approach 1). you have the correct code to copy a stream just above this.:
int numofbytes = inputStream.available();
byte[] buffer = new byte[numofbytes];
inputStream.read(buffer);
If all your server wants to do is get the data and write it to a file, then you do not need to use any of the audio API: simply treat the data as a stream of bytes.
So the part of approach 1 that is before any mention of AudioInputStream should be sufficient.
Although the approach chosen might not be the perfect solution, due to time constraints, I adopted a simpler approach. Using java.util.zip i simply zipped it up and sent it over to the server and then wrote a layer wherin the file gets unzipped . then i deleted the zip files. Seems like an immature solution (bcos the original challenge was to send the audio file). now i am incurring an overhead of zipping the files, but the file transfer would hapeen relatively faster. Thanks for your help guys.
I'm working on an application that has to process audio files. When using mp3 files I'm not sure how to handle data (the data I'm interested in are the the audio bytes, the ones that represent what we hear).
If I'm using a wav file I know I have a 44 bytes header and then the data. When it comes to an mp3, I've read that they are composed by frames, each frame containing a header and audio data. Is it possible to get all the audio data from a mp3 file?
I'm using java (I've added MP3SPI, Jlayer, and Tritonus) and I'm able to get the bytes from the file, but I'm not sure about what these bytes represent or how to handle then.
From the documentation for MP3SPI:
File file = new File(filename);
AudioInputStream in= AudioSystem.getAudioInputStream(file);
AudioInputStream din = null;
AudioFormat baseFormat = in.getFormat();
AudioFormat decodedFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED,
baseFormat.getSampleRate(),
16,
baseFormat.getChannels(),
baseFormat.getChannels() * 2,
baseFormat.getSampleRate(),
false);
din = AudioSystem.getAudioInputStream(decodedFormat, in);
You then just read data from din - it will be the "raw" data as per decodedFormat. (See the docs for AudioFormat for more information.)
(Note that this sample code doesn't close the stream or anything like that - use appropriate try/finally blocks as normal.)
The data that you want are the actual samples, while MP3 represents the data differently. So, like what everyone else has said - you need a library to decode the MP3 data into actual samples for your purpose.
As mentioned in the other answers, you need a decoder to decode MP3 into regular audio samples.
One popular option would be JavaLayer (LGPL).