X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Ffunction%2FPlayAudioFunction.java;fp=src%2Ftim%2Fprune%2Ffunction%2FPlayAudioFunction.java;h=2ac71e93b6e38bbbaab727aa1a6d7d421c4a117a;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/function/PlayAudioFunction.java b/src/tim/prune/function/PlayAudioFunction.java
new file mode 100644
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+++ b/src/tim/prune/function/PlayAudioFunction.java
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+package tim.prune.function;
+
+import java.io.BufferedOutputStream;
+import java.io.ByteArrayInputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.lang.reflect.InvocationTargetException;
+
+import javax.sound.sampled.AudioInputStream;
+import javax.sound.sampled.AudioSystem;
+import javax.sound.sampled.Clip;
+
+import tim.prune.App;
+import tim.prune.GenericFunction;
+import tim.prune.data.AudioClip;
+
+/**
+ * Class to play the current audio clip
+ */
+public class PlayAudioFunction extends GenericFunction implements Runnable
+{
+	/** Audio clip used for playing within java */
+	private Clip _clip = null;
+
+
+	/**
+	 * Constructor
+	 * @param inApp app object
+	 */
+	public PlayAudioFunction(App inApp) {
+		super(inApp);
+	}
+
+	/**
+	 * @return name key
+	 */
+	public String getNameKey() {
+		return "function.playaudio";
+	}
+
+	/**
+	 * Perform function
+	 */
+	public void begin()
+	{
+		// Launch new thread if clip isn't currently playing
+		if (_clip == null) {
+			new Thread(this).start();
+		}
+	}
+
+	/**
+	 * Play the audio in a new thread
+	 */
+	public void run()
+	{
+		AudioClip audio = _app.getTrackInfo().getCurrentAudio();
+		File audioFile = audio.getFile();
+		boolean played = false;
+		if (audioFile != null && audioFile.exists() && audioFile.isFile() && audioFile.canRead())
+		{
+			// First choice is to play using java
+			played = playClip(audio);
+			// If this didn't work, then try to play the file another way
+			if (!played) {
+				played = playAudioFile(audioFile);
+			}
+		}
+		else if (audioFile == null && audio.getByteData() != null)
+		{
+			// Try to play audio clip using byte array
+			played = playClip(audio);
+			// If this didn't work, then need to copy the byte data to a file and play it from there
+			if (!played)
+			{
+				try
+				{
+					String suffix = getSuffix(audio.getName());
+					File tempFile = File.createTempFile("gpsaudio", suffix);
+					tempFile.deleteOnExit();
+					// Copy byte data to this file
+					BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(tempFile));
+					bos.write(audio.getByteData(), 0, audio.getByteData().length);
+					bos.close();
+					played = playAudioFile(tempFile);
+				}
+				catch (IOException ignore) {
+					System.err.println("Error: " + ignore.getClass().getName() + " - " + ignore.getMessage());
+				}
+			}
+		}
+		if (!played)
+		{
+			// If still not worked, show error message
+			_app.showErrorMessage(getNameKey(), "error.playaudiofailed");
+		}
+	}
+
+	/**
+	 * Try to play the sound file using built-in java libraries
+	 * @param inAudio audio clip to play
+	 * @return true if play was successful
+	 */
+	private boolean playClip(AudioClip inClip)
+	{
+		boolean success = false;
+		AudioInputStream audioInputStream = null;
+		_clip = null;
+		try
+		{
+			if (inClip.getFile() != null)
+				audioInputStream = AudioSystem.getAudioInputStream(inClip.getFile());
+			else if (inClip.getByteData() != null)
+				audioInputStream = AudioSystem.getAudioInputStream(new ByteArrayInputStream(inClip.getByteData()));
+			else return false;
+			_clip = AudioSystem.getClip();
+			_clip.open(audioInputStream);
+			// play the clip
+			_clip.start();
+			_clip.drain();
+			success = true;
+		} catch (Exception e) {
+			System.err.println(e.getClass().getName() + " - " + e.getMessage());
+		} finally {
+			// close the stream to clean up
+			try {
+				_clip.close();
+				audioInputStream.close();
+			} catch (Exception e) {}
+			_clip = null;
+		}
+		return success;
+	}
+
+	/**
+	 * Try to play the specified audio file
+	 * @param inFile file to play
+	 * @return true if play was successful
+	 */
+	private boolean playAudioFile(File inFile)
+	{
+		boolean played = false;
+		// Try the Desktop library from java 6, if available
+		if (!played)
+		{
+			try
+			{
+				Class<?> d = Class.forName("java.awt.Desktop");
+				d.getDeclaredMethod("open", new Class[] {File.class}).invoke(
+					d.getDeclaredMethod("getDesktop").invoke(null), new Object[] {inFile});
+				//above code mimics: Desktop.getDesktop().open(audioFile);
+				played = true;
+			}
+			catch (InvocationTargetException e) {
+				System.err.println("ITE: " + e.getCause().getClass().getName() + " - " + e.getCause().getMessage());
+				played = false;
+			}
+			catch (Exception ignore) {
+				System.err.println(ignore.getClass().getName() + " - " + ignore.getMessage());
+				played = false;
+			}
+		}
+
+		// If the Desktop call failed, need to try backup methods
+		if (!played)
+		{
+			// If system looks like a Mac, try the open command
+			String osName = System.getProperty("os.name").toLowerCase();
+			boolean isMacOsx = osName.indexOf("mac os") >= 0 || osName.indexOf("darwin") >= 0;
+			if (isMacOsx)
+			{
+				String[] command = new String[] {"open", inFile.getAbsolutePath()};
+				try {
+					Runtime.getRuntime().exec(command);
+					played = true;
+				}
+				catch (IOException ioe) {}
+			}
+		}
+		return played;
+	}
+
+	/**
+	 * Try to stop a currently playing clip
+	 */
+	public void stopClip()
+	{
+		if (_clip != null && _clip.isActive()) {
+			try {
+				_clip.stop();
+				_clip.flush();
+			}
+			catch (Exception e) {}
+		}
+	}
+
+	/**
+	 * @return percentage of clip currently played, or -1 if not playing
+	 */
+	public int getPercentage()
+	{
+		int percent = -1;
+		if (_clip != null && _clip.isActive())
+		{
+			long clipLen = _clip.getMicrosecondLength();
+			if (clipLen > 0) {
+				percent = (int) (_clip.getMicrosecondPosition() * 100.0 / clipLen);
+			}
+		}
+		return percent;
+	}
+
+	/**
+	 * @param inName name of audio file
+	 * @return suffix (rest of name after the dot) - expect mp3, wav, ogg
+	 */
+	private static final String getSuffix(String inName)
+	{
+		if (inName == null || inName.equals("")) {return ".tmp";}
+		final int dotPos = inName.lastIndexOf('.');
+		if (dotPos < 0) {return inName;} // no dot found
+		return inName.substring(dotPos);
+	}
+}