1 files changed, 311 insertions, 0 deletions
diff --git a/src/metadata/wavpack/wvfile.cpp b/src/metadata/wavpack/wvfile.cpp
new file mode 100644
index 0000000..3890bc9
--- /dev/null
+++ b/src/metadata/wavpack/wvfile.cpp
@@ -0,0 +1,311 @@
+/***************************************************************************
+    copyright            : (C) 2006 by Lukáš Lalinský
+    email                : lalinsky@gmail.com
+    
+    copyright            : (C) 2004 by Allan Sandfeld Jensen 
+    email                : kde@carewolf.org 
+                           (original MPC implementation)
+ ***************************************************************************/
+
+/***************************************************************************
+ *   This library is free software; you can redistribute it and/or modify  *
+ *   it  under the terms of the GNU Lesser General Public License version  *
+ *   2.1 as published by the Free Software Foundation.                     *
+ *                                                                         *
+ *   This library 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     *
+ *   Lesser General Public License for more details.                       *
+ *                                                                         *
+ *   You should have received a copy of the GNU Lesser General Public      *
+ *   License along with this library; if not, write to the Free Software   *
+ *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,            *
+ *   MA  02110-1301  USA                                                   *
+ ***************************************************************************/
+
+#include <tbytevector.h>
+#include <tstring.h>
+#if 0
+#include <tdebug.h>
+#endif
+
+#include "wvfile.h"
+#include "id3v1tag.h"
+#include "id3v2header.h" 
+#include "apetag.h"
+#include "apefooter.h"
+#include "combinedtag.h" 
+
+using namespace TagLib;
+
+class WavPack::File::FilePrivate
+{
+public:
+  FilePrivate() :
+    APETag(0),
+    APELocation(-1),
+    APESize(0),
+    ID3v1Tag(0),
+    ID3v1Location(-1),
+    tag(0),     
+    properties(0),
+    scanned(false),
+    hasAPE(false),
+    hasID3v1(false) {}
+
+  ~FilePrivate()
+  {
+    if (tag != ID3v1Tag && tag != APETag) delete tag;
+    delete ID3v1Tag; 
+    delete APETag;
+    delete properties;
+  }
+
+  APE::Tag *APETag;
+  long APELocation;
+  uint APESize;
+
+  ID3v1::Tag *ID3v1Tag;
+  long ID3v1Location; 
+  
+  Tag *tag;
+  
+  Properties *properties;
+  bool scanned;
+
+  // These indicate whether the file *on disk* has these tags, not if
+  // this data structure does.  This is used in computing offsets.
+
+  bool hasAPE;
+  bool hasID3v1; 
+};
+
+////////////////////////////////////////////////////////////////////////////////
+// public members
+////////////////////////////////////////////////////////////////////////////////
+
+WavPack::File::File(const char *file, bool readProperties,
+                Properties::ReadStyle propertiesStyle) : TagLib::File(file)
+{
+  d = new FilePrivate;
+  read(readProperties, propertiesStyle);
+}
+
+WavPack::File::~File()
+{
+  delete d;
+}
+
+TagLib::Tag *WavPack::File::tag() const
+{
+  return d->tag;
+}
+
+WavPack::Properties *WavPack::File::audioProperties() const
+{
+  return d->properties;
+}
+
+bool WavPack::File::save()
+{
+  if(readOnly()) {
+#if 0
+    debug("WavPack::File::save() -- File is read only.");
+#endif
+    return false;
+  }
+
+  // Update ID3v1 tag
+
+  if(d->ID3v1Tag) {
+    if(d->hasID3v1) {
+      seek(d->ID3v1Location);
+      writeBlock(d->ID3v1Tag->render());
+    }
+    else {
+      seek(0, End);
+      d->ID3v1Location = tell();
+      writeBlock(d->ID3v1Tag->render());
+      d->hasID3v1 = true;
+    }
+  } else
+    if(d->hasID3v1) {
+      removeBlock(d->ID3v1Location, 128);
+      d->hasID3v1 = false;
+      if(d->hasAPE) {
+        if(d->APELocation > d->ID3v1Location)
+          d->APELocation -= 128;
+      }
+    }
+
+  // Update APE tag
+
+  if(d->APETag) {
+    if(d->hasAPE)
+      insert(d->APETag->render(), d->APELocation, d->APESize);
+    else {
+      if(d->hasID3v1)  {
+        insert(d->APETag->render(), d->ID3v1Location, 0);
+        d->APESize = d->APETag->footer()->completeTagSize();
+        d->hasAPE = true;
+        d->APELocation = d->ID3v1Location;
+        d->ID3v1Location += d->APESize;
+      }
+      else {
+        seek(0, End);
+        d->APELocation = tell();
+        writeBlock(d->APETag->render());
+        d->APESize = d->APETag->footer()->completeTagSize();
+        d->hasAPE = true;
+      }
+    }
+  }
+  else
+    if(d->hasAPE) {
+      removeBlock(d->APELocation, d->APESize);
+      d->hasAPE = false;
+      if(d->hasID3v1) {
+        if (d->ID3v1Location > d->APELocation)
+          d->ID3v1Location -= d->APESize;
+      }
+    }
+    
+   return true;
+}
+
+ID3v1::Tag *WavPack::File::ID3v1Tag(bool create)
+{
+  if(!create || d->ID3v1Tag)
+    return d->ID3v1Tag;
+
+  // no ID3v1 tag exists and we've been asked to create one
+
+  d->ID3v1Tag = new ID3v1::Tag;
+
+  if(d->APETag)
+    d->tag = new CombinedTag(d->APETag, d->ID3v1Tag);
+  else
+    d->tag = d->ID3v1Tag;
+
+  return d->ID3v1Tag;
+}
+
+APE::Tag *WavPack::File::APETag(bool create)
+{
+  if(!create || d->APETag)
+    return d->APETag;
+
+  // no APE tag exists and we've been asked to create one
+
+  d->APETag = new APE::Tag;
+
+  if(d->ID3v1Tag)
+    d->tag = new CombinedTag(d->APETag, d->ID3v1Tag);
+  else
+    d->tag = d->APETag;
+
+  return d->APETag;
+}
+
+void WavPack::File::remove(int tags)
+{
+  if(tags & ID3v1) {
+    delete d->ID3v1Tag;
+    d->ID3v1Tag = 0;
+
+    if(d->APETag)
+      d->tag = d->APETag;
+    else
+      d->tag = d->APETag = new APE::Tag;
+  }
+
+  if(tags & APE) {
+    delete d->APETag;
+    d->APETag = 0;
+
+    if(d->ID3v1Tag)
+      d->tag = d->ID3v1Tag;
+    else
+      d->tag = d->APETag = new APE::Tag;
+  }
+} 
+
+////////////////////////////////////////////////////////////////////////////////
+// private members
+////////////////////////////////////////////////////////////////////////////////
+
+void WavPack::File::read(bool readProperties, Properties::ReadStyle /* propertiesStyle */)
+{
+  // Look for an ID3v1 tag
+
+  d->ID3v1Location = findID3v1();
+
+  if(d->ID3v1Location >= 0) {
+    d->ID3v1Tag = new ID3v1::Tag(this, d->ID3v1Location);
+    d->hasID3v1 = true;
+  }
+  
+  // Look for an APE tag
+
+  d->APELocation = findAPE();
+
+  if(d->APELocation >= 0) {
+    d->APETag = new APE::Tag(this, d->APELocation);
+    d->APESize = d->APETag->footer()->completeTagSize();
+    d->APELocation = d->APELocation + d->APETag->footer()->size() - d->APESize;
+    d->hasAPE = true;
+  }
+
+  if(d->hasID3v1 && d->hasAPE)
+    d->tag = new CombinedTag(d->APETag, d->ID3v1Tag);
+  else {
+    if(d->hasID3v1)
+      d->tag = d->ID3v1Tag;
+    else {
+      if(d->hasAPE)
+        d->tag = d->APETag;
+      else
+        d->tag = d->APETag = new APE::Tag;
+    }
+  } 
+
+  // Look for WavPack audio properties
+
+  if(readProperties) {
+    seek(0);
+    d->properties = new Properties(readBlock(WavPack::HeaderSize),
+                                   length() - d->APESize);
+  }
+}
+
+long WavPack::File::findAPE()
+{
+  if(!isValid())
+    return -1;
+
+  if(d->hasID3v1)
+    seek(-160, End);
+  else
+    seek(-32, End);
+
+  long p = tell();
+
+  if(readBlock(8) == APE::Tag::fileIdentifier())
+    return p;
+
+  return -1;
+}
+
+long WavPack::File::findID3v1()
+{
+  if(!isValid())
+    return -1;
+
+  seek(-128, End);
+  long p = tell();
+
+  if(readBlock(3) == ID3v1::Tag::fileIdentifier())
+    return p;
+
+  return -1;
+}