can any of the google engineers assigned to the codecs help?
On Apr 9, 1:34 pm, Anil <[EMAIL PROTECTED]> wrote:
> *bump*
>
> On Apr 9, 9:43 am, Anil <[EMAIL PROTECTED]> wrote:
>
> > I am trying to figure out how to play a JSpeex encoded audio file on
> > android but am stuck.
>
> > Speex or JSpeex (the Java implementation) is royalty free and is well
> > suited to voice applications. It provides as much compression as mp3.
> > Apparently it will be implemented in
> > android:http://code.google.com/p/android/issues/detail?id=354&can=4&colspec=I...
>
> > the project page is
> > herehttp://sourceforge.net/project/showfiles.php?group_id=84548
>
> > I am trying to figure out how to fit it into the android calls
>
> > MediaPlayer mp = new android.media.MediaPlayer();
> > mp.setDataSource("/data/data/com.jo.blockpad/files/jo-russkelly_files/
> > 2-0.spx");
> > mp.prepare();
> > mp.start();
>
> > Any help appreciated.
> > thanks,
> > Anil
>
> > -------------------------------------------------
> > calling it from Java Sound example
> > --------------------------------------------------
>
> > import java.io.IOException;
> > import java.net.URL;
> > import java.util.Observable;
> > import java.util.Observer;
>
> > import javax.sound.sampled.AudioFormat;
> > import javax.sound.sampled.AudioInputStream;
> > import javax.sound.sampled.AudioSystem;
> > import javax.sound.sampled.DataLine;
> > import javax.sound.sampled.LineEvent;
> > import javax.sound.sampled.LineListener;
> > import javax.sound.sampled.LineUnavailableException;
> > import javax.sound.sampled.Mixer;
> > import javax.sound.sampled.SourceDataLine;
> > import javax.swing.JOptionPane;
>
> > /**
> > * Audio playing code has been adapted from Matthias Pfisterer's
> > * AudioPlayer.java
> > *
> > * Anil
> > */
>
> > private MyObservable observable = new MyObservable();
>
> > private static int DEFAULT_EXTERNAL_BUFFER_SIZE = 128000;
>
> > int nExternalBufferSize = DEFAULT_EXTERNAL_BUFFER_SIZE;
>
> > int nInternalBufferSize = AudioSystem.NOT_SPECIFIED;
>
> > boolean bForceConversion = false;
>
> > private static boolean DEBUG = false;
>
> > SourceDataLine line = null;
>
> > private Object snippet = null;
>
> > public void playClip(String urlStr) throws Exception {
> > // important - otherwise skim() will fail to move to the
> > next node
> > this.snippet = snippetRef;
>
> > /**
> > * Flag for forcing a conversion. If set to true, a
> > conversion of
> > the
> > * AudioInputStream (AudioSystem.getAudioInputStream(...,
> > * AudioInputStream)) is done even if the format of the
> > original
> > * AudioInputStream would be supported for SourceDataLines
> > directly.
> > * This flag is set by the command line options "-E" and
> > "-S".
> > */
> > boolean bForceConversion = false;
>
> > /**
> > * Endianess value to use in conversion. If a conversion of
> > the
> > * AudioInputStream is done, this values is used as
> > endianess in the
> > * target AudioFormat. The default value can be altered by
> > the
> > command
> > * line option "-B".
> > */
> > boolean bBigEndian = false;
>
> > /**
> > * Sample size value to use in conversion. If a conversion
> > of the
> > * AudioInputStream is done, this values is used as sample
> > size in
> > the
> > * target AudioFormat. The default value can be altered by
> > the
> > command
> > * line option "-S".
> > */
> > int nSampleSizeInBits = 16;
>
> > String strMixerName = null;
>
> > int nExternalBufferSize = DEFAULT_EXTERNAL_BUFFER_SIZE;
>
> > int nInternalBufferSize = AudioSystem.NOT_SPECIFIED;
>
> > AudioInputStream audioInputStream = null;
> > URL url = new URL(urlStr);
> > audioInputStream = AudioSystem.getAudioInputStream(url);
> > if (DEBUG)
> > out("AudioPlayer.main(): primary AIS: " +
> > audioInputStream);
>
> > /*
> > * From the AudioInputStream, i.e. from the sound file, we
> > fetch
> > * information about the format of the audio data. These
> > information
> > * include the sampling frequency, the number of
> > linkSnippets and
> > the
> > * size of the samples. These information are needed to ask
> > Java
> > Sound
> > * for a suitable output line for this audio stream.
> > */
> > AudioFormat audioFormat = audioInputStream.getFormat();
> > if (DEBUG)
> > out("AudioPlayer.main(): primary format: " +
> > audioFormat);
> > DataLine.Info info = new DataLine.Info(SourceDataLine.class,
> > audioFormat,
> > nInternalBufferSize);
> > boolean bIsSupportedDirectly =
> > AudioSystem.isLineSupported(info);
> > if (!bIsSupportedDirectly || bForceConversion) {
> > AudioFormat sourceFormat = audioFormat;
> > AudioFormat targetFormat = new
> > AudioFormat(AudioFormat.Encoding.PCM_SIGNED,
> > sourceFormat.getSampleRate(),
> > nSampleSizeInBits, sourceFormat
> > .getChannels(),
> > sourceFormat.getChannels()
> > *
> > (nSampleSizeInBits / 8), sourceFormat.getSampleRate(),
> > bBigEndian);
> > if (DEBUG) {
> > out("AudioPlayer.main(): source format: " +
> > sourceFormat);
> > out("AudioPlayer.main(): target format: " +
> > targetFormat);
> > }
> > audioInputStream =
> > AudioSystem.getAudioInputStream(targetFormat,
> > audioInputStream);
> > audioFormat = audioInputStream.getFormat();
> > if (DEBUG)
> > out("AudioPlayer.main(): converted AIS: " +
> > audioInputStream);
> > if (DEBUG)
> > out("AudioPlayer.main(): converted format:
> > " + audioFormat);
> > }
>
> > line = getSourceDataLine(strMixerName, audioFormat,
> > nInternalBufferSize);
> > if (line == null) {
> > out("AudioPlayer: cannot get SourceDataLine for
> > format " +
> > audioFormat);
> > JOptionPane.showMessageDialog(null,
> > "AudioPlayer: cannot get
> > SourceDataLine for format", "Cannot
> > play",
> > JOptionPane.ERROR_MESSAGE);
> > return;
> > }
> > if (DEBUG)
> > out("AudioPlayer.main(): line: " + line);
> > if (DEBUG)
> > out("AudioPlayer.main(): line format: " +
> > line.getFormat());
> > // Anil
>
> > line.addLineListener(new LineListener() {
>
> > public void update(LineEvent event) {
> > System.out.println("update(). SpeechPlayer
> > LineListener. " +
> > event.getLine() + " "
> > + event.getType());
> > // we want to notify only on the events:
> > when clip runs out, and
> > // when forcibly stopped.
> > // ie. the STOP event. Otherwise the
> > application will hang if
> > // the blocking array is full.
> > // Anil 01/24/2006
> > if (event.getType() == LineEvent.Type.STOP)
> > {
> > observable.setChanged();
> > System.out.println("SpeechPlayer.
> > About to notify "
> > +
> > observable.countObservers()
> > + " observers
> > regarding line event STOP.");
> > observable.notifyObservers(snippet);
> > }
> > }
>
> > });
>
> > /*
> > * Still not enough. The line now can receive data, but
> > will not
> > pass
> > * them on to the audio output device (which means to your
> > sound
> > card).
> > * This has to be activated.
> > */
> > line.start();
>
> > /*
> > * Ok, finally the line is prepared. Now comes the real
> > job: we have
> > to
> > * write data to the line. We do this in a loop. First, we
> > read data
> > * from the AudioInputStream to a buffer. Then, we write
> > from this
> > * buffer to the Line. This is done until the end of the
> > file is
> > * reached, which is detected by a return value of -1 from
> > the read
> > * method of the AudioInputStream.
> > */
> > int nBytesRead = 0;
> > byte[] abData = new byte[nExternalBufferSize];
> > if (DEBUG)
> > out("AudioPlayer.main(): starting main loop");
> > while (nBytesRead != -1) {
> > try {
> > nBytesRead = audioInputStream.read(abData,
> > 0, abData.length);
> > } catch (IOException e) {
> > e.printStackTrace();
> > ceasePlaying(false, false);
>
> ...
>
> read more ยป
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