add: new class for loading wave files, in preperation of removing ALUT

src/java/org/lwjgl/test/openal/WaveData.java

@@ -0,0 +1,183 @@
+/*
+ * Copyright (c) 2002 Light Weight Java Game Library Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of 'Light Weight Java Game Library' nor the names of
+ *   its contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package org.lwjgl.test.openal;
+
+import org.lwjgl.openal.AL;
+
+import java.nio.ByteBuffer;
+
+import javax.sound.sampled.AudioInputStream;
+import javax.sound.sampled.AudioSystem;
+import javax.sound.sampled.*;
+
+import java.io.BufferedInputStream;
+import java.io.ByteArrayInputStream;
+import java.io.FileInputStream;
+import java.io.IOException;
+
+/**
+ * $Id$
+ *
+ * Utitlity class for loading wavefiles.
+ *
+ * @author Brian Matzon <brian@matzon.dk>
+ * @version $Revision$
+ */
+public class WaveData {
+	/** actual wave data */
+	public final ByteBuffer data;
+
+	/** format type of data */
+	public final int format;
+
+	/** sample rate of data */
+	public final int samplerate;
+
+	/**
+	 * Creates a new WaveData
+	 * 
+	 * @param data actual wavedata
+	 * @param format format of wave data
+	 * @param samplerate sample rate of data
+	 */
+	private WaveData(ByteBuffer data, int format, int samplerate) {
+		this.data = data;
+		this.format = format;
+		this.samplerate = samplerate;
+	}
+
+  /**
+   * Disposes the wavedata
+   */
+  public void dispose() {
+    data.clear();
+  }
+
+	/**
+	 * Creates a WaveData container from the specified filename
+	 * 
+	 * @param filepath path to file 
+	 * @return WaveData containing data, or null if a failure occured
+	 */
+	public static WaveData create(String filepath) {
+		try {
+			return create(
+				AudioSystem.getAudioInputStream(
+					new BufferedInputStream(new FileInputStream(filepath))));
+		} catch (Exception e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+  
+  /**
+   * Creates a WaveData container from the specified bytes
+   *
+   * @param buffer array of bytes containing the complete wave file
+   * @return WaveData containing data, or null if a failure occured
+   */
+  public static WaveData create(byte[] buffer) {
+    try {
+      return create(
+        AudioSystem.getAudioInputStream(
+          new BufferedInputStream(new ByteArrayInputStream(buffer))));
+    } catch (Exception e) {
+      e.printStackTrace();
+      return null;
+    }
+  }  
+
+	/**
+	 * Creates a WaveData container from the specified stream
+	 * 
+	 * @param ais AudioInputStream to read from
+	 * @return WaveData containing data, or null if a failure occured
+	 */
+	public static WaveData create(AudioInputStream ais) {
+		//get format of data
+		AudioFormat audioformat = ais.getFormat();
+
+		// get channels
+		int channels = 0;
+		if (audioformat.getChannels() == 1) {
+			if (audioformat.getSampleSizeInBits() == 8) {
+				channels = AL.FORMAT_MONO8;
+			} else if (audioformat.getSampleSizeInBits() == 16) {
+				channels = AL.FORMAT_MONO16;
+			} else {
+				assert false : "Illegal sample size";
+			}
+		} else if (audioformat.getChannels() == 2) {
+			if (audioformat.getSampleSizeInBits() == 8) {
+				channels = AL.FORMAT_STEREO8;
+			} else if (audioformat.getSampleSizeInBits() == 16) {
+				channels = AL.FORMAT_STEREO16;
+			} else {
+				assert false : "Illegal sample size";
+			}
+		} else {
+			assert false : "Only mono or stereo is supported";
+		}
+
+		//read data into buffer
+		byte[] buf =
+			new byte[audioformat.getChannels()
+				* (int) ais.getFrameLength()
+				* audioformat.getSampleSizeInBits()
+				/ 8];
+		int read = 0, total = 0;
+		try {
+			while ((read = ais.read(buf, total, buf.length - total)) != -1
+				&& total < buf.length) {
+				total += read;
+			}
+		} catch (IOException ioe) {
+			return null;
+		}
+
+		//insert data into bytebuffer
+		ByteBuffer buffer = ByteBuffer.allocateDirect(buf.length);
+		buffer.put(buf);
+
+    //create our result
+		WaveData wavedata =
+			new WaveData(buffer, channels, (int) audioformat.getSampleRate());
+
+    //close stream
+		try {
+			ais.close();
+		} catch (IOException ioe) {
+		}
+
+		return wavedata;
+	}
+}