Feeding data from memory to MediaPlayer

Question

Scenario: Have encrypted mp3 files in my .apk. Need to decrypt and send to MediaPlayer object.

Problem: After I read the files and decrypt them, how do I get MediaPlayer to play them ?

Now. MediaPlayer has 4 versions of setDataSource().

setDataSource(String path)
setDataSource(FileDescriptor fd)
setDataSource(FileDescriptor fd, long offset, long length)
setDataSource(Context context, Uri uri)

None of which are ideal for the situation. Guess ideal would be to give MediaPlayer an InputStream ?

Possible solutions:

• Write decrypted data to file play that file. A lot of IO overhead.
• Create a dummy http server (ServerSocket ?) and pass the url to MediaPlayer. Again, messy. Am I even allowed to create a socket.

Does anyone have a better solution ?

Answer 1

byte[] callData = ...;
String base64EncodedString = Base64.encodeToString(callData, Base64.DEFAULT);

try
{
    String url = "data:audio/amr;base64,"+base64EncodedString;
    MediaPlayer mediaPlayer = new MediaPlayer();
    mediaPlayer.setDataSource(url);
    mediaPlayer.prepare();
    mediaPlayer.start();
}
catch(Exception ex){
    ...
}