From 3914cfdacc25f353f7ea3d682fff765653edeeb7 Mon Sep 17 00:00:00 2001
From: svollbehr <svollbehr@51a70ab9-7547-0410-9469-37e369ee0574>
Date: Mon, 17 Mar 2008 12:54:34 +0000
Subject: [PATCH] Fix encoding and one byte field issue

git-svn-id: http://php-reader.googlecode.com/svn/trunk@12 51a70ab9-7547-0410-9469-37e369ee0574
---
 src/ID3/Encoding.php           |  8 ++---
 src/ID3/Frame/APIC.php         | 50 +++++++++++++----------------
 src/ID3/Frame/AbstractText.php | 20 +++++++-----
 src/ID3/Frame/COMM.php         | 21 ++++++++-----
 src/ID3/Frame/COMR.php         | 36 ++++++++++-----------
 src/ID3/Frame/ETCO.php         | 57 +++++++++-------------------------
 src/ID3/Frame/GEOB.php         | 22 ++++++++-----
 src/ID3/Frame/MLLT.php         |  3 --
 src/ID3/Frame/OWNE.php         | 23 ++++++++------
 src/ID3/Frame/POSS.php         |  2 +-
 src/ID3/Frame/SYLT.php         | 34 ++++++++++----------
 src/ID3/Frame/SYTC.php         |  3 +-
 src/ID3/Frame/USER.php         | 17 ++++++----
 src/ID3/Frame/USLT.php         | 21 ++++++++-----
 src/ID3/Frame/WXXX.php         | 24 ++++++++------
 src/ID3/Timing.php             |  4 +--
 16 files changed, 170 insertions(+), 175 deletions(-)

diff --git a/src/ID3/Encoding.php b/src/ID3/Encoding.php
index 0689069..7c4b628 100644
--- a/src/ID3/Encoding.php
+++ b/src/ID3/Encoding.php
@@ -47,16 +47,16 @@
 interface ID3_Encoding
 {
   /** The ISO-8859-1 encoding. */
-  const ISO88591 = 0x00;
+  const ISO88591 = 0;
   
   /** The UTF-16 Unicode encoding with BOM. */
-  const UTF16 = 0x01;
+  const UTF16    = 1;
   
   /** The UTF-16BE Unicode encoding without BOM. */
-  const UTF16BE = 0x02;
+  const UTF16BE  = 2;
   
   /** The UTF-8 Unicode encoding. */
-  const UTF8 = 0x03;
+  const UTF8     = 3;
   
   /**
    * Returns the text encoding.
diff --git a/src/ID3/Frame/APIC.php b/src/ID3/Frame/APIC.php
index e17b073..1140c25 100644
--- a/src/ID3/Frame/APIC.php
+++ b/src/ID3/Frame/APIC.php
@@ -67,27 +67,14 @@ final class ID3_Frame_APIC extends ID3_Frame
    * @var Array
    */
   public static $types = array
-    (0x00 => "Other",
-     0x01 => "32x32 pixels file icon (PNG only)",
-     0x02 => "Other file icon",
-     0x03 => "Cover (front)",
-     0x04 => "Cover (back)",
-     0x05 => "Leaflet page",
-     0x06 => "Media (e.g. label side of CD)",
-     0x07 => "Lead artist/lead performer/soloist",
-     0x08 => "Artist/performer",
-     0x09 => "Conductor",
-     0x0A => "Band/Orchestra",
-     0x0B => "Composer",
-     0x0C => "Lyricist/text writer",
-     0x0D => "Recording Location",
-     0x0E => "During recording",
-     0x0F => "During performance",
-     0x10 => "Movie/video screen capture",
-     0x11 => "A bright coloured fish",
-     0x12 => "Illustration",
-     0x13 => "Band/artist logotype",
-     0x14 => "Publisher/Studio logotype");
+    ("Other", "32x32 pixels file icon (PNG only)", "Other file icon",
+     "Cover (front)", "Cover (back)", "Leaflet page",
+     "Media (e.g. label side of CD)", "Lead artist/lead performer/soloist",
+     "Artist/performer", "Conductor", "Band/Orchestra", "Composer",
+     "Lyricist/text writer", "Recording Location", "During recording",
+     "During performance", "Movie/video screen capture",
+     "A bright coloured fish", "Illustration", "Band/artist logotype",
+     "Publisher/Studio logotype");
   
   /** @var integer */
   private $_encoding;
@@ -113,22 +100,27 @@ final class ID3_Frame_APIC extends ID3_Frame
     $this->_encoding = substr($this->_data, 0, 1);
     $this->_mimeType = substr
       ($this->_data, 1, ($pos = strpos($this->_data, "\0", 1)) - 1);
-    $this->_pictureType = substr($this->_data, $pos++, 1);
+    $this->_pictureType = ord($this->_data{$pos++});
+    $this->_data = substr($this->_data, $pos);
+    
     switch ($this->_encoding) {
     case self::UTF16:
-      list ($this->_description, $this->_data) =
-        preg_split("/\\x00\\x00/", substr($this->_data, $pos), 2);
-      $this->_description = Transform::getString16LE($this->_description);
-      break;
+      $bom = substr($this->_data, 0, 2);
+      $this->_data = substr($this->_data, 2);
+      if ($bom == 0xfffe) {
+        list ($this->_description, $this->_data) =
+          preg_split("/\\x00\\x00/", $this->_data, 2);
+        $this->_description = Transform::getString16LE($this->_description);
+        break;
+      }
     case self::UTF16BE:
       list ($this->_description, $this->_data) =
-        preg_split("/\\x00\\x00/", substr($this->_data, $pos), 2);
+        preg_split("/\\x00\\x00/", $this->_data, 2);
       $this->_description = Transform::getString16BE($this->_description);
       break;
     default:
       list ($this->_description, $this->_data) =
-        preg_split("/\\x00/", substr($this->_data, $pos), 2);
-      $this->_description = Transform::getString8($this->_description);
+        preg_split("/\\x00/", $this->_data, 2);
     }
   }
   
diff --git a/src/ID3/Frame/AbstractText.php b/src/ID3/Frame/AbstractText.php
index 6973596..2b3e235 100644
--- a/src/ID3/Frame/AbstractText.php
+++ b/src/ID3/Frame/AbstractText.php
@@ -66,19 +66,23 @@ abstract class ID3_Frame_AbstractText extends ID3_Frame
   {
     parent::__construct($reader);
 
-    $this->_encoding = substr($this->_data, 0, 1);
+    $this->_encoding = ord($this->_data{0});
+    $this->_data = substr($this->_data, 1);
     switch ($this->_encoding) {
     case self::UTF16:
-      $this->_data = Transform::getString16LE(substr($this->_data, 1));
-      $this->_text = preg_split("/\\x00\\x00/", $this->_data);
-      break;
+      $bom = substr($this->_data, 0, 2);
+      $this->_data = substr($this->_data, 2);
+      if ($bom == 0xfffe) {
+        $this->_text =
+          preg_split("/\\x00\\x00/", Transform::getString16LE($this->_data));
+        break;
+      }
     case self::UTF16BE:
-      $this->_data = Transform::getString16BE(substr($this->_data, 1));
-      $this->_text = preg_split("/\\x00\\x00/", $this->_data);
+      $this->_text =
+        preg_split("/\\x00\\x00/", Transform::getString16BE($this->_data));
       break;
     default:
-      $this->_data = Transform::getString8(substr($this->_data, 1));
-      $this->_text = preg_split("/\\x00/", $this->_data);
+      $this->_text = preg_split("/\\x00/", Transform::getString8($this->_data));
     }
   }
   
diff --git a/src/ID3/Frame/COMM.php b/src/ID3/Frame/COMM.php
index 2a12eb6..2445294 100644
--- a/src/ID3/Frame/COMM.php
+++ b/src/ID3/Frame/COMM.php
@@ -78,25 +78,30 @@ final class ID3_Frame_COMM extends ID3_Frame
   {
     parent::__construct($reader);
 
-    $this->_encoding = substr($this->_data, 0, 1);
+    $this->_encoding = ord($this->_data{0});
     $this->_language = substr($this->_data, 1, 3);
+    $this->_data = substr($this->_data, 4);
     
     switch ($this->_encoding) {
     case self::UTF16:
-      list ($this->_description, $this->_text) =
-        preg_split("/\\x00\\x00/", substr($this->_data, 4), 2);
-      $this->_description = Transform::getString16LE($this->_description);
-      $this->_text = Transform::getString16LE($this->_text);
-      break;
+      $bom = substr($this->_data, 0, 2);
+      $this->_data = substr($this->_data, 2);
+      if ($bom == 0xfffe) {
+        list ($this->_description, $this->_text) =
+          preg_split("/\\x00\\x00/", $this->_data, 2);
+        $this->_description = Transform::getString16LE($this->_description);
+        $this->_text = Transform::getString16LE($this->_text);
+        break;
+      }
     case self::UTF16BE:
       list ($this->_description, $this->_text) =
-        preg_split("/\\x00\\x00/", substr($this->_data, 4), 2);
+        preg_split("/\\x00\\x00/", $this->_data, 2);
       $this->_description = Transform::getString16BE($this->_description);
       $this->_text = Transform::getString16BE($this->_text);
       break;
     default:
       list ($this->_description, $this->_text) =
-        preg_split("/\\x00/", substr($this->_data, 4), 2);
+        preg_split("/\\x00/", $this->_data, 2);
       $this->_description = Transform::getString8($this->_description);
       $this->_text = Transform::getString8($this->_text);
     }
diff --git a/src/ID3/Frame/COMR.php b/src/ID3/Frame/COMR.php
index 4e261e5..6d9480d 100644
--- a/src/ID3/Frame/COMR.php
+++ b/src/ID3/Frame/COMR.php
@@ -63,15 +63,10 @@ final class ID3_Frame_COMR extends ID3_Frame
    * @var Array
    */
   public static $types = array
-    (0x00 => "Other",
-     0x01 => "Standard CD album with other songs",
-     0x02 => "Compressed audio on CD",
-     0x03 => "File over the Internet",
-     0x04 => "Stream over the Internet",
-     0x05 => "As note sheets",
-     0x06 => "As note sheets in a book with other sheets",
-     0x07 => "Music on other media",
-     0x08 => "Non-musical merchandise");
+    ("Other", "Standard CD album with other songs", "Compressed audio on CD",
+     "File over the Internet", "Stream over the Internet", "As note sheets",
+     "As note sheets in a book with other sheets", "Music on other media",
+     "Non-musical merchandise");
 
   /** @var integer */
   private $_encoding;
@@ -109,7 +104,7 @@ final class ID3_Frame_COMR extends ID3_Frame
   {
     parent::__construct($reader);
 
-    $this->_encoding = substr($this->_data, 0, 1);
+    $this->_encoding = ord($this->_data{0});
     list($pricing, $this->_data) =
       preg_split("/\\x00/", substr($this->_data, 1), 2);
     $this->_currency = substr($pricing, 0, 3);
@@ -117,24 +112,29 @@ final class ID3_Frame_COMR extends ID3_Frame
     $this->_date = substr($this->_data, 0, 8);
     list($this->_contact, $this->_data) =
       preg_split("/\\x00/", substr($this->_data, 8), 2);
-    $this->_delivery = substr($this->_data, 0, 1);
+    $this->_delivery = ord($this->_data{0});
+    $this->_data = substr($this->_data, 1);
     
     switch ($this->_encoding) {
     case self::UTF16:
-      list ($this->_seller, $this->_description, $this->_data) =
-        preg_split("/\\x00\\x00/", substr($this->_data, 1), 3);
-      $this->_seller = Transform::getString16LE($this->_seller);
-      $this->_description = Transform::getString16LE($this->_description);
-      break;
+      $bom = substr($this->_data, 0, 2);
+      $this->_data = substr($this->_data, 2);
+      if ($bom == 0xfffe) {
+        list ($this->_seller, $this->_description, $this->_data) =
+          preg_split("/\\x00\\x00/", $this->_data, 3);
+        $this->_seller = Transform::getString16LE($this->_seller);
+        $this->_description = Transform::getString16LE($this->_description);
+        break;
+      }
     case self::UTF16BE:
       list ($this->_seller, $this->_description, $this->_data) =
-        preg_split("/\\x00\\x00/", substr($this->_data, 1), 3);
+        preg_split("/\\x00\\x00/", $this->_data, 3);
       $this->_seller = Transform::getString16BE($this->_seller);
       $this->_description = Transform::getString16BE($this->_description);
       break;
     default:
       list ($this->_seller, $this->_description, $this->_data) =
-        preg_split("/\\x00/", substr($this->_data, 1), 3);
+        preg_split("/\\x00/", $this->_data, 3);
       $this->_seller = Transform::getString8($this->_seller);
       $this->_description = Transform::getString8($this->_description);
     }
diff --git a/src/ID3/Frame/ETCO.php b/src/ID3/Frame/ETCO.php
index 1dac451..2bd0a13 100644
--- a/src/ID3/Frame/ETCO.php
+++ b/src/ID3/Frame/ETCO.php
@@ -68,46 +68,19 @@ final class ID3_Frame_ETCO extends ID3_Frame
    * @var Array
    */
   public static $types = array
-    (0x00 => "Padding",
-     0x01 => "End of initial silence",
-     0x02 => "Intro start",
-     0x03 => "Main part start",
-     0x04 => "Outro start",
-     0x05 => "Outro end",
-     0x06 => "Verse start",
-     0x07 => "Refrain start",
-     0x08 => "Interlude start",
-     0x09 => "Theme start",
-     0x0a => "Variation start",
-     0x0b => "Key change",
-     0x0c => "Time change",
-     0x0d => "Momentary unwanted noise",
-     0x0e => "Sustained noise",
-     0x0f => "Sustained noise end",
-     0x10 => "Intro end",
-     0x11 => "Main part end",
-     0x12 => "Verse end",
-     0x13 => "Refrain end",
-     0x14 => "Theme end",
-     0x15 => "Profanity",
-     0x16 => "Profanity end",
-     0xe0 => "User event",
-     0xe1 => "User event",
-     0xe2 => "User event",
-     0xe3 => "User event",
-     0xe4 => "User event",
-     0xe5 => "User event",
-     0xe6 => "User event",
-     0xe7 => "User event",
-     0xea => "User event",
-     0xeb => "User event",
-     0xec => "User event",
-     0xed => "User event",
-     0xee => "User event",
-     0xef => "User event",
-     0xfd => "Audio end (start of silence)",
-     0xfe => "Audio file ends",
-     0xff => "One more byte of events follows");
+    ("Padding", "End of initial silence", "Intro start", "Main part start",
+     "Outro start", "Outro end", "Verse start","Refrain start",
+     "Interlude start", "Theme start", "Variation start", "Key change",
+     "Time change", "Momentary unwanted noise", "Sustained noise",
+     "Sustained noise end", "Intro end", "Main part end", "Verse end",
+     "Refrain end", "Theme end", "Profanity", "Profanity end",
+    
+     0xe0 => "User event", "User event", "User event", "User event",
+     "User event", "User event", "User event", "User event", "User event",
+     "User event", "User event", "User event", "User event", "User event",
+    
+     0xfd => "Audio end (start of silence)", "Audio file ends",
+     "One more byte of events follows");
   
   /** @var integer */
   private $_format;
@@ -124,11 +97,11 @@ final class ID3_Frame_ETCO extends ID3_Frame
   {
     parent::__construct($reader);
 
-    $this->_format = substr($this->_data, 0, 1);
+    $this->_format = ord($this->_data{0});
     
     for ($i = 1; $i < $this->getSize(); $i += 5) {
       $this->_events[Transform::getInt32BE(substr($this->_data, $i + 1, 4))] =
-        $data = substr($this->_data, $i, 1);
+        $data = $this->_data{$i};
       if ($data == 0xff)
         break;
     }
diff --git a/src/ID3/Frame/GEOB.php b/src/ID3/Frame/GEOB.php
index 6d701c5..1e21126 100644
--- a/src/ID3/Frame/GEOB.php
+++ b/src/ID3/Frame/GEOB.php
@@ -73,25 +73,31 @@ final class ID3_Frame_GEOB extends ID3_Frame
   {
     parent::__construct($reader);
 
-    $this->_encoding = substr($this->_data, 0, 1);
+    $this->_encoding = ord($this->_data{0});
     $this->_mimeType = substr
       ($this->_data, 1, ($pos = strpos($this->_data, "\0", 1)) - 1);
+    $this->_data = substr($this->_data, $pos);
+    
     switch ($this->_encoding) {
     case self::UTF16:
-      list ($this->_filename, $this->_description, $this->_data) =
-        preg_split("/\\x00\\x00/", substr($this->_data, $pos), 3);
-      $this->_filename = Transform::getString16LE($this->_filename);
-      $this->_description = Transform::getString16LE($this->_description);
-      break;
+      $bom = substr($this->_data, 0, 2);
+      $this->_data = substr($this->_data, 2);
+      if ($bom == 0xfffe) {
+        list ($this->_filename, $this->_description, $this->_data) =
+          preg_split("/\\x00\\x00/", $this->_data, 3);
+        $this->_filename = Transform::getString16LE($this->_filename);
+        $this->_description = Transform::getString16LE($this->_description);
+        break;
+      }
     case self::UTF16BE:
       list ($this->_filename, $this->_description, $this->_data) =
-        preg_split("/\\x00\\x00/", substr($this->_data, $pos), 3);
+        preg_split("/\\x00\\x00/", $this->_data, 3);
       $this->_filename = Transform::getString16BE($this->_filename);
       $this->_description = Transform::getString16BE($this->_description);
       break;
     default:
       list ($this->_filename, $this->_description, $this->_data) =
-        preg_split("/\\x00/", substr($this->_data, $pos), 3);
+        preg_split("/\\x00/", $this->_data, 3);
       $this->_filename = Transform::getString8($this->_filename);
       $this->_description = Transform::getString8($this->_description);
     }
diff --git a/src/ID3/Frame/MLLT.php b/src/ID3/Frame/MLLT.php
index d3c77c0..c80abbe 100644
--- a/src/ID3/Frame/MLLT.php
+++ b/src/ID3/Frame/MLLT.php
@@ -35,9 +35,6 @@
 
 /**#@+ @ignore */
 require_once("ID3/Frame.php");
-require_once("ID3/Encoding.php");
-require_once("ID3/Language.php");
-require_once("ID3/Timing.php");
 /**#@-*/
 
 /**
diff --git a/src/ID3/Frame/OWNE.php b/src/ID3/Frame/OWNE.php
index d086250..3e00a98 100644
--- a/src/ID3/Frame/OWNE.php
+++ b/src/ID3/Frame/OWNE.php
@@ -79,21 +79,26 @@ final class ID3_Frame_OWNE extends ID3_Frame
   {
     parent::__construct($reader);
 
-    $this->_encoding = substr($this->_data, 0, 1);
-    list($tmp1, $tmp2) = preg_split("/\\x00/", substr($this->_data, 1), 2);
-    $this->_currency = substr($tmp1, 0, 3);
-    $this->_price = substr($tmp1, 3);
-    $this->_date = substr($tmp2, 0, 8);
+    $this->_encoding = ord($this->_data{0});
+    list($tmp, $this->_data) = preg_split("/\\x00/", substr($this->_data, 1), 2);
+    $this->_currency = substr($tmp, 0, 3);
+    $this->_price = substr($tmp, 3);
+    $this->_date = substr($this->_data, 0, 8);
+    $this->_data = substr($this->_data, 8);
     
     switch ($this->_encoding) {
     case self::UTF16:
-      $this->_seller = Transform::getString16LE(substr($tmp2, 8));
-      break;
+      $bom = substr($this->_data, 0, 2);
+      $this->_data = substr($this->_data, 2);
+      if ($bom == 0xfffe) {
+        $this->_seller = Transform::getString16LE($this->_data);
+        break;
+      }
     case self::UTF16BE:
-      $this->_seller = Transform::getString16BE(substr($tmp2, 8));
+      $this->_seller = Transform::getString16BE($this->_data);
       break;
     default:
-      $this->_seller = Transform::getString8(substr($tmp2, 8));
+      $this->_seller = Transform::getString8($this->_data);
     }
   }
 
diff --git a/src/ID3/Frame/POSS.php b/src/ID3/Frame/POSS.php
index d714fc7..9ed28b2 100644
--- a/src/ID3/Frame/POSS.php
+++ b/src/ID3/Frame/POSS.php
@@ -69,7 +69,7 @@ final class ID3_Frame_POSS extends ID3_Frame
   {
     parent::__construct($reader);
 
-    $this->_format = substr($this->_data, 0, 1);
+    $this->_format = ord($this->_data{0});
     $this->_position = Transform::getInt32BE(substr($this->_data, 1, 4));
   }
 
diff --git a/src/ID3/Frame/SYLT.php b/src/ID3/Frame/SYLT.php
index 0405d99..844625f 100644
--- a/src/ID3/Frame/SYLT.php
+++ b/src/ID3/Frame/SYLT.php
@@ -65,15 +65,8 @@ final class ID3_Frame_USER extends ID3_Frame
    * @var Array
    */
   public static $types = array
-    (0x00 => "Other",
-     0x01 => "Lyrics",
-     0x02 => "Text transcription",
-     0x03 => "Movement/Part name",
-     0x04 => "Eevents",
-     0x05 => "Chord",
-     0x06 => "Trivia",
-     0x07 => "URLs to webpages",
-     0x08 => "URLs to images");
+    ("Other", "Lyrics", "Text transcription", "Movement/Part name", "Eevents",
+     "Chord", "Trivia", "URLs to webpages", "URLs to images");
   
   /** @var integer */
   private $_encoding;
@@ -102,25 +95,30 @@ final class ID3_Frame_USER extends ID3_Frame
   {
     parent::__construct($reader);
 
-    $this->_encoding = substr($this->_data, 0, 1);
+    $this->_encoding = ord($this->_data{0});
     $this->_language = substr($this->_data, 1, 3);
-    $this->_format = substr($this->_data, 3, 1);
-    $this->_type = substr($this->_data, 4, 1);
+    $this->_format = ord($this->_data{3});
+    $this->_type = ord($this->_data{4});
+    $this->_data = substr($this->_data, 5);
     
     switch ($this->_encoding) {
     case self::UTF16:
-      list($this->_description, $this->_data) =
-        preg_split("/\\x00\\x00/", substr($this->_data, 5), 2);
-      $this->_description = Transform::getString16LE($this->_description);
-      break;
+      $bom = substr($this->_data, 0, 2);
+      $this->_data = substr($this->_data, 2);
+      if ($bom == 0xfffe) {
+        list($this->_description, $this->_data) =
+          preg_split("/\\x00\\x00/", $this->_data, 2);
+        $this->_description = Transform::getString16LE($this->_description);
+        break;
+      }
     case self::UTF16BE:
       list($this->_description, $this->_data) =
-        preg_split("/\\x00\\x00/", substr($this->_data, 5), 2);
+        preg_split("/\\x00\\x00/", $this->_data, 2);
       $this->_description = Transform::getString16BE($this->_description);
       break;
     default:
       list($this->_description, $this->_data) =
-        preg_split("/\\x00/", substr($this->_data, 5), 2);
+        preg_split("/\\x00/", $this->_data, 2);
       $this->_description = Transform::getString8($this->_description);
     }
     
diff --git a/src/ID3/Frame/SYTC.php b/src/ID3/Frame/SYTC.php
index 5730a23..d8700ae 100644
--- a/src/ID3/Frame/SYTC.php
+++ b/src/ID3/Frame/SYTC.php
@@ -78,8 +78,7 @@ final class ID3_Frame_SYTC extends ID3_Frame
   {
     parent::__construct($reader);
 
-    $this->_format = substr($this->_data, 0, 1);
-    
+    $this->_format = ord($this->_data{0});
     $this->_data = substr($this->_data, 1); // FIXME: Better parsing of data
   }
   
diff --git a/src/ID3/Frame/USER.php b/src/ID3/Frame/USER.php
index a68c030..16fb969 100644
--- a/src/ID3/Frame/USER.php
+++ b/src/ID3/Frame/USER.php
@@ -74,18 +74,23 @@ final class ID3_Frame_USER extends ID3_Frame
   {
     parent::__construct($reader);
 
-    $this->_encoding = substr($this->_data, 0, 1);
+    $this->_encoding = ord($this->_data{0});
     $this->_language = substr($this->_data, 1, 3);
-    
+    $this->_data = substr($this->_data, 4);
+
     switch ($this->_encoding) {
     case self::UTF16:
-      $this->_text = Transform::getString16LE(substr($this->_data, 4));
-      break;
+      $bom = substr($this->_data, 0, 2);
+      $this->_data = substr($this->_data, 2);
+      if ($bom == 0xfffe) {
+        $this->_text = Transform::getString16LE($this->_data);
+        break;
+      }
     case self::UTF16BE:
-      $this->_text = Transform::getString16BE(substr($this->_data, 4));
+      $this->_text = Transform::getString16BE($this->_data);
       break;
     default:
-      $this->_text = Transform::getString8(substr($this->_data, 4));
+      $this->_text = Transform::getString8($this->_data);
     }
   }
 
diff --git a/src/ID3/Frame/USLT.php b/src/ID3/Frame/USLT.php
index e729414..f115c26 100644
--- a/src/ID3/Frame/USLT.php
+++ b/src/ID3/Frame/USLT.php
@@ -76,25 +76,30 @@ final class ID3_Frame_USLT extends ID3_Frame
   {
     parent::__construct($reader);
 
-    $this->_encoding = substr($this->_data, 0, 1);
+    $this->_encoding = ord($this->_data{0});
     $this->_language = substr($this->_data, 1, 3);
+    $this->_data = substr($this->_data, 4);
     
     switch ($this->_encoding) {
     case self::UTF16:
-      list ($this->_description, $this->_text) =
-        preg_split("/\\x00\\x00/", substr($this->_data, 4), 2);
-      $this->_description = Transform::getString16LE($this->_description);
-      $this->_text = Transform::getString16LE($this->_text);
-      break;
+      $bom = substr($this->_data, 0, 2);
+      $this->_data = substr($this->_data, 2);
+      if ($bom == 0xfffe) {
+        list ($this->_description, $this->_text) =
+          preg_split("/\\x00\\x00/", $this->_data, 2);
+        $this->_description = Transform::getString16LE($this->_description);
+        $this->_text = Transform::getString16LE($this->_text);
+        break;
+      }
     case self::UTF16BE:
       list ($this->_description, $this->_text) =
-        preg_split("/\\x00\\x00/", substr($this->_data, 4), 2);
+        preg_split("/\\x00\\x00/", $this->_data, 2);
       $this->_description = Transform::getString16BE($this->_description);
       $this->_text = Transform::getString16BE($this->_text);
       break;
     default:
       list ($this->_description, $this->_text) =
-        preg_split("/\\x00/", substr($this->_data, 4), 2);
+        preg_split("/\\x00/", $this->_data, 2);
       $this->_description = Transform::getString8($this->_description);
       $this->_text = Transform::getString8($this->_text);
     }
diff --git a/src/ID3/Frame/WXXX.php b/src/ID3/Frame/WXXX.php
index 0ffc12a..292c0e3 100644
--- a/src/ID3/Frame/WXXX.php
+++ b/src/ID3/Frame/WXXX.php
@@ -70,23 +70,29 @@ final class ID3_Frame_WXXX extends ID3_Frame_AbstractLink
   {
     parent::__construct($reader);
 
-    $this->_encoding = substr($this->_data, 0, 1);
+    $this->_encoding = ord($this->_data{0});
+    $this->_data = substr($this->_data, 1);
+    
     switch ($this->_encoding) {
     case self::UTF16:
-      $chunks = preg_split("/\\x00\\x00/", substr($this->_data, 1));
-      $this->_description = Transform::getString16LE($chunks[0]);
-      $this->_link = $chunks[1];
-      break;
+      $bom = substr($this->_data, 0, 2);
+      $this->_data = substr($this->_data, 2);
+      if ($bom == 0xfffe) {
+        list($this->_description, $this->_link) = 
+          preg_split("/\\x00\\x00/", $this->_data, 2);
+        $this->_description = Transform::getString16LE($this->_description);
+        break;
+      }
     case self::UTF16BE:
-      $chunks = preg_split("/\\x00\\x00/", substr($this->_data, 1));
-      $this->_description = Transform::getString16BE($chunks[0]);
-      $this->_link = $chunks[1];
+        list($this->_description, $this->_link) = 
+          preg_split("/\\x00\\x00/", $this->_data, 2);
+        $this->_description = Transform::getString16BE($this->_description);
       break;
     case self::UTF8:
     case self::ISO88591:
     default:
       list($this->_description, $this->_link) =
-        preg_split("/\\x00/", substr($this->_data, 1));
+        preg_split("/\\x00/", $this->_data);
       break;
     }
   }
diff --git a/src/ID3/Timing.php b/src/ID3/Timing.php
index 66da687..176ed6d 100644
--- a/src/ID3/Timing.php
+++ b/src/ID3/Timing.php
@@ -50,10 +50,10 @@
 interface ID3_Timing
 {
   /** The timestamp is an absolute time, using MPEG frames as unit. */
-  const MPEG_FRAMES = 0x01;
+  const MPEG_FRAMES   = 1;
   
   /** The timestamp is an absolute time, using milliseconds as unit. */
-  const MILLISECONDS = 0x02;
+  const MILLISECONDS  = 2;
   
   /**
    * Returns the timing format.