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diff --git a/songdbj/javazoom/jl/decoder/OutputChannels.java b/songdbj/javazoom/jl/decoder/OutputChannels.java
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+/*
+ * 11/19/04 1.0 moved to LGPL.
+ * 12/12/99 Initial implementation. mdm@techie.com.
+ *-----------------------------------------------------------------------
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *----------------------------------------------------------------------
+ */
+
+package javazoom.jl.decoder;
+
+
+/**
+ * A Type-safe representation of the the supported output channel
+ * constants.
+ *
+ * This class is immutable and, hence, is thread safe.
+ *
+ * @author Mat McGowan 12/12/99
+ * @since 0.0.7
+ */
+public class OutputChannels
+{
+ /**
+ * Flag to indicate output should include both channels.
+ */
+ public static final int BOTH_CHANNELS = 0;
+
+ /**
+ * Flag to indicate output should include the left channel only.
+ */
+ public static final int LEFT_CHANNEL = 1;
+
+ /**
+ * Flag to indicate output should include the right channel only.
+ */
+ public static final int RIGHT_CHANNEL = 2;
+
+ /**
+ * Flag to indicate output is mono.
+ */
+ public static final int DOWNMIX_CHANNELS = 3;
+
+
+ public static final OutputChannels LEFT = new OutputChannels(LEFT_CHANNEL);
+ public static final OutputChannels RIGHT = new OutputChannels(RIGHT_CHANNEL);
+ public static final OutputChannels BOTH = new OutputChannels(BOTH_CHANNELS);
+ public static final OutputChannels DOWNMIX = new OutputChannels(DOWNMIX_CHANNELS);
+
+
+ private /*final*/ int outputChannels;
+
+ /**
+ * Creates an <code>OutputChannels</code> instance
+ * corresponding to the given channel code.
+ *
+ * @param code one of the OutputChannels channel code constants.
+ *
+ * @throws IllegalArgumentException if code is not a valid
+ * channel code.
+ */
+ static public OutputChannels fromInt(int code)
+ {
+ switch (code)
+ {
+ case LEFT_CHANNEL:
+ return LEFT;
+ case RIGHT_CHANNEL:
+ return RIGHT;
+ case BOTH_CHANNELS:
+ return BOTH;
+ case DOWNMIX_CHANNELS:
+ return DOWNMIX;
+ default:
+ throw new IllegalArgumentException("Invalid channel code: "+code);
+ }
+ }
+
+ private OutputChannels(int channels)
+ {
+ outputChannels = channels;
+
+ if (channels<0 || channels>3)
+ throw new IllegalArgumentException("channels");
+ }
+
+ /**
+ * Retrieves the code representing the desired output channels.
+ * Will be one of LEFT_CHANNEL, RIGHT_CHANNEL, BOTH_CHANNELS
+ * or DOWNMIX_CHANNELS.
+ *
+ * @return the channel code represented by this instance.
+ */
+ public int getChannelsOutputCode()
+ {
+ return outputChannels;
+ }
+
+ /**
+ * Retrieves the number of output channels represented
+ * by this channel output type.
+ *
+ * @return The number of output channels for this channel output
+ * type. This will be 2 for BOTH_CHANNELS only, and 1
+ * for all other types.
+ */
+ public int getChannelCount()
+ {
+ int count = (outputChannels==BOTH_CHANNELS) ? 2 : 1;
+ return count;
+ }
+
+
+ public boolean equals(Object o)
+ {
+ boolean equals = false;
+
+ if (o instanceof OutputChannels)
+ {
+ OutputChannels oc = (OutputChannels)o;
+ equals = (oc.outputChannels == outputChannels);
+ }
+
+ return equals;
+ }
+
+ public int hashCode()
+ {
+ return outputChannels;
+ }
+
+}