split client and server 1

java/src/client/audio/jorbis/Comment.java

@@ -0,0 +1,244 @@
+/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
+/* JOrbis
+ * Copyright (C) 2000 ymnk, JCraft,Inc.
+ *  
+ * Written by: 2000 ymnk<ymnk@jcraft.com>
+ *   
+ * Many thanks to 
+ *   Monty <monty@xiph.org> and 
+ *   The XIPHOPHORUS Company http://www.xiph.org/ .
+ * JOrbis has been based on their awesome works, Vorbis codec.
+ *   
+ * 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 client.audio.jorbis;
+
+import client.audio.jogg.Buffer;
+import client.audio.jogg.Packet;
+
+// the comments are not part of vorbis_info so that vorbis_info can be
+// static storage
+public class Comment{
+  private static byte[] _vorbis="vorbis".getBytes();
+  private static byte[] _vendor="Xiphophorus libVorbis I 20000508".getBytes();
+
+  private static final int OV_EIMPL=-130;
+
+  // unlimited user comment fields.
+  public byte[][] user_comments;
+  public int[] comment_lengths;
+  public int comments;
+  public byte[] vendor;
+
+  public void init(){
+    user_comments=null;
+    comments=0;
+    vendor=null;
+  }
+
+  public void add(String comment){
+    add(comment.getBytes());
+  }
+
+  private void add(byte[] comment){
+    byte[][] foo=new byte[comments+2][];
+    if(user_comments!=null){
+      System.arraycopy(user_comments, 0, foo, 0, comments);
+    }
+    user_comments=foo;
+
+    int[] goo=new int[comments+2];
+    if(comment_lengths!=null){
+      System.arraycopy(comment_lengths, 0, goo, 0, comments);
+    }
+    comment_lengths=goo;
+
+    byte[] bar=new byte[comment.length+1];
+    System.arraycopy(comment, 0, bar, 0, comment.length);
+    user_comments[comments]=bar;
+    comment_lengths[comments]=comment.length;
+    comments++;
+    user_comments[comments]=null;
+  }
+
+  public void add_tag(String tag, String contents){
+    if(contents==null)
+      contents="";
+    add(tag+"="+contents);
+  }
+
+  static boolean tagcompare(byte[] s1, byte[] s2, int n){
+    int c=0;
+    byte u1, u2;
+    while(c<n){
+      u1=s1[c];
+      u2=s2[c];
+      if('Z'>=u1&&u1>='A')
+        u1=(byte)(u1-'A'+'a');
+      if('Z'>=u2&&u2>='A')
+        u2=(byte)(u2-'A'+'a');
+      if(u1!=u2){
+        return false;
+      }
+      c++;
+    }
+    return true;
+  }
+
+  public String query(String tag){
+    return query(tag, 0);
+  }
+
+  public String query(String tag, int count){
+    int foo=query(tag.getBytes(), count);
+    if(foo==-1)
+      return null;
+    byte[] comment=user_comments[foo];
+    for(int i=0; i<comment_lengths[foo]; i++){
+      if(comment[i]=='='){
+        return new String(comment, i+1, comment_lengths[foo]-(i+1));
+      }
+    }
+    return null;
+  }
+
+  private int query(byte[] tag, int count){
+    int i=0;
+    int found=0;
+    int fulltaglen=tag.length+1;
+    byte[] fulltag=new byte[fulltaglen];
+    System.arraycopy(tag, 0, fulltag, 0, tag.length);
+    fulltag[tag.length]=(byte)'=';
+
+    for(i=0; i<comments; i++){
+      if(tagcompare(user_comments[i], fulltag, fulltaglen)){
+        if(count==found){
+          // We return a pointer to the data, not a copy
+          //return user_comments[i] + taglen + 1;
+          return i;
+        }
+        else{
+          found++;
+        }
+      }
+    }
+    return -1;
+  }
+
+  int unpack(Buffer opb){
+    int vendorlen=opb.read(32);
+    if(vendorlen<0){
+      clear();
+      return (-1);
+    }
+    vendor=new byte[vendorlen+1];
+    opb.read(vendor, vendorlen);
+    comments=opb.read(32);
+    if(comments<0){
+      clear();
+      return (-1);
+    }
+    user_comments=new byte[comments+1][];
+    comment_lengths=new int[comments+1];
+
+    for(int i=0; i<comments; i++){
+      int len=opb.read(32);
+      if(len<0){
+        clear();
+        return (-1);
+      }
+      comment_lengths[i]=len;
+      user_comments[i]=new byte[len+1];
+      opb.read(user_comments[i], len);
+    }
+    if(opb.read(1)!=1){
+      clear();
+      return (-1);
+
+    }
+    return (0);
+  }
+
+  int pack(Buffer opb){
+    // preamble
+    opb.write(0x03, 8);
+    opb.write(_vorbis);
+
+    // vendor
+    opb.write(_vendor.length, 32);
+    opb.write(_vendor);
+
+    // comments
+    opb.write(comments, 32);
+    if(comments!=0){
+      for(int i=0; i<comments; i++){
+        if(user_comments[i]!=null){
+          opb.write(comment_lengths[i], 32);
+          opb.write(user_comments[i]);
+        }
+        else{
+          opb.write(0, 32);
+        }
+      }
+    }
+    opb.write(1, 1);
+    return (0);
+  }
+
+  public int header_out(Packet op){
+    Buffer opb=new Buffer();
+    opb.writeinit();
+
+    if(pack(opb)!=0)
+      return OV_EIMPL;
+
+    op.packet_base=new byte[opb.bytes()];
+    op.packet=0;
+    op.bytes=opb.bytes();
+    System.arraycopy(opb.buffer(), 0, op.packet_base, 0, op.bytes);
+    op.b_o_s=0;
+    op.e_o_s=0;
+    op.granulepos=0;
+    return 0;
+  }
+
+  void clear(){
+    for(int i=0; i<comments; i++)
+      user_comments[i]=null;
+    user_comments=null;
+    vendor=null;
+  }
+
+  public String getVendor(){
+    return new String(vendor, 0, vendor.length-1);
+  }
+
+  public String getComment(int i){
+    if(comments<=i)
+      return null;
+    return new String(user_comments[i], 0, user_comments[i].length-1);
+  }
+
+  public String toString(){
+    String foo="Vendor: "+new String(vendor, 0, vendor.length-1);
+    for(int i=0; i<comments; i++){
+      foo=foo+"\nComment: "
+          +new String(user_comments[i], 0, user_comments[i].length-1);
+    }
+    foo=foo+"\n";
+    return foo;
+  }
+}