1 files changed, 143 insertions, 0 deletions

diff --git a/songdbj/javazoom/jl/decoder/OutputChannels.java b/songdbj/javazoom/jl/decoder/OutputChannels.java
new file mode 100644
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+++ 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;  
+        }
+                
+}