WavPack support.

CCBUG:114982


git-svn-id: svn://anonsvn.kde.org/home/kde/trunk/kdesupport/taglib@733568 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

bindings/c/CMakeLists.txt

@@ -6,7 +6,9 @@ INCLUDE_DIRECTORIES( ${CMAKE_CURRENT_SOURCE_DIR}/../../taglib
 		     ${CMAKE_CURRENT_SOURCE_DIR}/../../taglib/ogg/flac
 		     ${CMAKE_CURRENT_SOURCE_DIR}/../../taglib/flac
 		     ${CMAKE_CURRENT_SOURCE_DIR}/../../taglib/mpc
-		     ${CMAKE_CURRENT_SOURCE_DIR}/../../taglib/mpeg/id3v2  )
+		     ${CMAKE_CURRENT_SOURCE_DIR}/../../taglib/mpeg/id3v2
+		     ${CMAKE_CURRENT_SOURCE_DIR}/../../taglib/wavpack
+)
 
 
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/taglib_c.pc.cmake ${CMAKE_CURRENT_BINARY_DIR}/taglib_c.pc )

bindings/c/Makefile.am

@@ -8,6 +8,7 @@ INCLUDES = \
 	-I$(top_srcdir)/taglib/flac \
 	-I$(top_srcdir)/taglib/mpc \
 	-I$(top_srcdir)/taglib/mpeg/id3v2 \
+	-I$(top_srcdir)/taglib/wavpack \
 	$(all_includes)
 
 lib_LTLIBRARIES = libtag_c.la

bindings/c/tag_c.cpp

@@ -29,6 +29,7 @@
 #include <flacfile.h>
 #include <oggflacfile.h>
 #include <mpcfile.h>
+#include <wavpackfile.h>
 #include <tag.h>
 #include <string.h>
 #include <id3v2framefactory.h>
@@ -71,6 +72,8 @@ TagLib_File *taglib_file_new_type(const char *filename, TagLib_File_Type type)
     return reinterpret_cast<TagLib_File *>(new MPC::File(filename));
   case TagLib_File_OggFlac:
     return reinterpret_cast<TagLib_File *>(new Ogg::FLAC::File(filename));
+  case TagLib_File_WavPack:
+    return reinterpret_cast<TagLib_File *>(new WavPack::File(filename));
   }
 
   return 0;

bindings/c/tag_c.h

@@ -86,7 +86,8 @@ typedef enum {
   TagLib_File_OggVorbis,
   TagLib_File_FLAC,
   TagLib_File_MPC,
-  TagLib_File_OggFlac
+  TagLib_File_OggFlac,
+  TagLib_File_WavPack
 } TagLib_File_Type;
 
 /*!

taglib/CMakeLists.txt

@@ -11,6 +11,7 @@ INCLUDE_DIRECTORIES(
     ${CMAKE_CURRENT_SOURCE_DIR}/mpeg/id3v2
     ${CMAKE_CURRENT_SOURCE_DIR}/mpeg/id3v1
     ${CMAKE_CURRENT_SOURCE_DIR}/ape
+    ${CMAKE_CURRENT_SOURCE_DIR}/wavpack
     ${CMAKE_CURRENT_BINARY_DIR}/taglib
     ${CMAKE_CURRENT_BINARY_DIR}/..
 )
@@ -24,6 +25,7 @@ ADD_SUBDIRECTORY( ogg )
 ADD_SUBDIRECTORY( flac )
 ADD_SUBDIRECTORY( ape )
 ADD_SUBDIRECTORY( mpc )
+ADD_SUBDIRECTORY( wavpack )
 
 
 
@@ -96,6 +98,11 @@ ape/apefooter.cpp
 ape/apeitem.cpp
 )
 
+SET(wavpack_SRCS
+wavpack/wavpackfile.cpp
+wavpack/wavpackproperties.cpp
+)
+
 SET(toolkit_SRCS
 toolkit/tstring.cpp
 toolkit/tstringlist.cpp
@@ -108,6 +115,7 @@ toolkit/unicode.cpp
 
 SET(tag_LIB_SRCS ${mpeg_SRCS} ${id3v1_SRCS} ${id3v2_SRCS} ${frames_SRCS} ${ogg_SRCS}
 		 ${vorbis_SRCS} ${oggflacs_SRCS} ${mpc_SRCS} ${ape_SRCS} ${toolkit_SRCS} ${flacs_SRCS}
+		 ${wavpack_SRCS}
 		 tag.cpp
 		 fileref.cpp
 		 audioproperties.cpp

taglib/Makefile.am

@@ -1,4 +1,4 @@
-SUBDIRS = toolkit mpeg ogg flac ape mpc
+SUBDIRS = toolkit mpeg ogg flac ape mpc wavpack
 
 INCLUDES = \
 	-I$(top_srcdir)/taglib \
@@ -9,6 +9,7 @@ INCLUDES = \
 	-I$(top_srcdir)/taglib/flac \
 	-I$(top_srcdir)/taglib/mpc \
 	-I$(top_srcdir)/taglib/ogg/vorbis \
+	-I$(top_srcdir)/taglib/wavpack \
 	$(all_includes)
 
 lib_LTLIBRARIES = libtag.la
@@ -18,4 +19,4 @@ taglib_include_HEADERS = tag.h fileref.h audioproperties.h taglib_export.h
 taglib_includedir = $(includedir)/taglib
 
 libtag_la_LDFLAGS = $(all_libraries) -no-undefined -version-info 5:0:4
-libtag_la_LIBADD = ./mpeg/libmpeg.la ./ogg/libogg.la ./flac/libflac.la ./mpc/libmpc.la ./ape/libape.la ./toolkit/libtoolkit.la
+libtag_la_LIBADD = ./mpeg/libmpeg.la ./ogg/libogg.la ./flac/libflac.la ./mpc/libmpc.la ./ape/libape.la ./toolkit/libtoolkit.la ./wavpack/libwavpack.la

taglib/fileref.cpp

@@ -32,6 +32,7 @@
 #include "flacfile.h"
 #include "oggflacfile.h"
 #include "mpcfile.h"
+#include "wavpackfile.h"
 
 using namespace TagLib;
 
@@ -115,6 +116,7 @@ StringList FileRef::defaultFileExtensions()
   l.append("oga");
   l.append("mp3");
   l.append("mpc");
+  l.append("wv");
 
   return l;
 }
@@ -179,6 +181,8 @@ File *FileRef::create(const char *fileName, bool readAudioProperties,
       return new FLAC::File(fileName, readAudioProperties, audioPropertiesStyle);
     if(s.substr(s.size() - 4, 4).upper() == ".MPC")
       return new MPC::File(fileName, readAudioProperties, audioPropertiesStyle);
+    if(s.substr(s.size() - 4, 4).upper() == ".WV")
+      return new WavPack::File(fileName, readAudioProperties, audioPropertiesStyle);
   }
 
   return 0;

taglib/wavpack/CMakeLists.txt

@@ -0,0 +1 @@
+INSTALL( FILES  wavpackfile.h wavpackproperties.h DESTINATION ${INCLUDE_INSTALL_DIR}/taglib)

taglib/wavpack/Makefile.am

@@ -0,0 +1,15 @@
+INCLUDES = \
+	-I$(top_srcdir)/taglib \
+	-I$(top_srcdir)/taglib/toolkit \
+	-I$(top_srcdir)/taglib/ape \
+	-I$(top_srcdir)/taglib/mpc \
+	-I$(top_srcdir)/taglib/mpeg/id3v1 \
+	-I$(top_srcdir)/taglib/mpeg/id3v2 \
+	$(all_includes)
+
+noinst_LTLIBRARIES = libwavpack.la
+
+libwavpack_la_SOURCES = wavpackfile.cpp wavpackproperties.cpp
+
+taglib_include_HEADERS = wavpackfile.h wavpackproperties.h
+taglib_includedir = $(includedir)/taglib

taglib/wavpack/wavpackfile.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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
+ *   USA                                                                   *
+ *                                                                         *
+ *   Alternatively, this file is available under the Mozilla Public        *
+ *   License Version 1.1.  You may obtain a copy of the License at         *
+ *   http://www.mozilla.org/MPL/                                           *
+ ***************************************************************************/
+
+#include <tbytevector.h>
+#include <tstring.h>
+#include <tdebug.h>
+
+#include "wavpackfile.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()) {
+    debug("WavPack::File::save() -- File is read only.");
+    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;
+} 

taglib/wavpack/wavpackfile.h

@@ -0,0 +1,164 @@
+/***************************************************************************
+    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
+ *   USA                                                                   *
+ *                                                                         *
+ *   Alternatively, this file is available under the Mozilla Public        *
+ *   License Version 1.1.  You may obtain a copy of the License at         *
+ *   http://www.mozilla.org/MPL/                                           *
+ ***************************************************************************/
+
+#ifndef TAGLIB_WVFILE_H
+#define TAGLIB_WVFILE_H
+
+#include <tfile.h>
+#include "taglib_export.h"
+#include "wavpackproperties.h"
+
+namespace TagLib {
+
+  class Tag;
+
+  namespace ID3v1 { class Tag; }
+  namespace APE { class Tag; }
+
+  //! An implementation of WavPack metadata
+
+  /*!
+   * This is implementation of WavPack metadata.
+   *
+   * This supports ID3v1 and APE (v1 and v2) style comments as well as reading stream
+   * properties from the file. 
+   */
+
+  namespace WavPack {
+
+    //! An implementation of TagLib::File with WavPack specific methods
+
+    /*!
+     * This implements and provides an interface for WavPack files to the
+     * TagLib::Tag and TagLib::AudioProperties interfaces by way of implementing
+     * the abstract TagLib::File API as well as providing some additional
+     * information specific to WavPack files.
+     */
+
+    class TAGLIB_EXPORT File : public TagLib::File
+    {
+    public:
+      /*!
+       * This set of flags is used for various operations and is suitable for
+       * being OR-ed together.
+       */
+      enum TagTypes {
+        //! Empty set.  Matches no tag types.
+        NoTags  = 0x0000,
+        //! Matches ID3v1 tags.
+        ID3v1   = 0x0001,
+        //! Matches APE tags.
+        APE     = 0x0002,
+        //! Matches all tag types.
+        AllTags = 0xffff
+      };
+
+      /*!
+       * Contructs an WavPack file from \a file.  If \a readProperties is true the
+       * file's audio properties will also be read using \a propertiesStyle.  If
+       * false, \a propertiesStyle is ignored.
+       */
+      File(const char *file, bool readProperties = true,
+           Properties::ReadStyle propertiesStyle = Properties::Average);
+
+      /*!
+       * Destroys this instance of the File.
+       */
+      virtual ~File();
+
+      /*!
+       * Returns the Tag for this file.  This will be an APE tag, an ID3v1 tag
+       * or a combination of the two.
+       */ 
+      virtual TagLib::Tag *tag() const;
+
+      /*!
+       * Returns the MPC::Properties for this file.  If no audio properties
+       * were read then this will return a null pointer.
+       */
+      virtual Properties *audioProperties() const;
+
+      /*!
+       * Saves the file.
+       */
+      virtual bool save();
+
+      /*!
+       * Returns a pointer to the ID3v1 tag of the file.
+       *
+       * If \a create is false (the default) this will return a null pointer
+       * if there is no valid ID3v1 tag.  If \a create is true it will create
+       * an ID3v1 tag if one does not exist. If there is already an APE tag, the
+       * new ID3v1 tag will be placed after it.
+       *
+       * \note The Tag <b>is still</b> owned by the APE::File and should not be
+       * deleted by the user.  It will be deleted when the file (object) is
+       * destroyed.
+       */
+      ID3v1::Tag *ID3v1Tag(bool create = false); 
+
+      /*!
+       * Returns a pointer to the APE tag of the file.
+       *
+       * If \a create is false (the default) this will return a null pointer
+       * if there is no valid APE tag.  If \a create is true it will create
+       * a APE tag if one does not exist. 
+       *
+       * \note The Tag <b>is still</b> owned by the APE::File and should not be
+       * deleted by the user.  It will be deleted when the file (object) is
+       * destroyed.
+       */
+      APE::Tag *APETag(bool create = false);
+
+      /*!
+       * This will remove the tags that match the OR-ed together TagTypes from the
+       * file.  By default it removes all tags.
+       *
+       * \note This will also invalidate pointers to the tags
+       * as their memory will be freed.
+       * \note In order to make the removal permanent save() still needs to be called
+       */
+      void remove(int tags = AllTags); 
+      
+    private:
+      File(const File &);
+      File &operator=(const File &);
+
+      void read(bool readProperties, Properties::ReadStyle propertiesStyle);
+      void scan();
+      long findID3v1(); 
+      long findAPE();
+
+      class FilePrivate;
+      FilePrivate *d;
+    };
+  }
+}
+
+#endif

taglib/wavpack/wavpackproperties.cpp

@@ -0,0 +1,143 @@
+/***************************************************************************
+    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
+ *   USA                                                                   *
+ *                                                                         *
+ *   Alternatively, this file is available under the Mozilla Public        *
+ *   License Version 1.1.  You may obtain a copy of the License at         *
+ *   http://www.mozilla.org/MPL/                                           *
+ ***************************************************************************/
+
+#include <tstring.h>
+#include <tdebug.h>
+#include <bitset>
+
+#include "wavpackproperties.h"
+#include "wavpackfile.h"
+
+using namespace TagLib;
+
+class WavPack::Properties::PropertiesPrivate
+{
+public:
+  PropertiesPrivate(const ByteVector &d, long length, ReadStyle s) :
+    data(d),
+    streamLength(length), 
+    style(s),
+    length(0),
+    bitrate(0),
+    sampleRate(0),
+    channels(0),
+    version(0),
+    bitsPerSample(0) {}
+
+  ByteVector data;
+  long streamLength; 
+  ReadStyle style;
+  int length;
+  int bitrate;
+  int sampleRate;
+  int channels;
+  int version;
+  int bitsPerSample;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+// public members
+////////////////////////////////////////////////////////////////////////////////
+
+WavPack::Properties::Properties(const ByteVector &data, long streamLength, ReadStyle style) : AudioProperties(style)
+{
+  d = new PropertiesPrivate(data, streamLength, style);
+  read();
+}
+
+WavPack::Properties::~Properties()
+{
+  delete d;
+}
+
+int WavPack::Properties::length() const
+{
+  return d->length;
+}
+
+int WavPack::Properties::bitrate() const
+{
+  return d->bitrate;
+}
+
+int WavPack::Properties::sampleRate() const
+{
+  return d->sampleRate;
+}
+
+int WavPack::Properties::channels() const
+{
+  return d->channels;
+}
+
+int WavPack::Properties::version() const
+{
+  return d->version;
+}
+
+int WavPack::Properties::bitsPerSample() const
+{
+  return d->bitsPerSample;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// private members
+////////////////////////////////////////////////////////////////////////////////
+
+static const unsigned int sample_rates[] = { 6000, 8000, 9600, 11025, 12000,
+    16000, 22050, 24000, 32000, 44100, 48000, 64000, 88200, 96000, 192000 };
+
+#define BYTES_STORED    3
+#define MONO_FLAG       4
+
+#define SHIFT_LSB       13
+#define SHIFT_MASK      (0x1fL << SHIFT_LSB)
+
+#define SRATE_LSB       23
+#define SRATE_MASK      (0xfL << SRATE_LSB)
+
+void WavPack::Properties::read()
+{
+  if(!d->data.startsWith("wvpk"))
+    return;
+
+  d->version = d->data.mid(8, 2).toShort(false);
+
+  unsigned int flags = d->data.mid(24, 4).toUInt(false);
+  d->bitsPerSample = ((flags & BYTES_STORED) + 1) * 8 -
+    ((flags & SHIFT_MASK) >> SHIFT_LSB);
+  d->sampleRate = sample_rates[(flags & SRATE_MASK) >> SRATE_LSB];
+  d->channels = (flags & MONO_FLAG) ? 1 : 2;
+
+  unsigned int samples = d->data.mid(12, 4).toUInt(false);
+  d->length = d->sampleRate > 0 ? (samples + (d->sampleRate / 2)) / d->sampleRate : 0;
+
+  d->bitrate = d->length > 0 ? ((d->streamLength * 8L) / d->length) / 1000 : 0;
+}
+

taglib/wavpack/wavpackproperties.h

@@ -0,0 +1,91 @@
+/***************************************************************************
+    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
+ *   USA                                                                   *
+ *                                                                         *
+ *   Alternatively, this file is available under the Mozilla Public        *
+ *   License Version 1.1.  You may obtain a copy of the License at         *
+ *   http://www.mozilla.org/MPL/                                           *
+ ***************************************************************************/
+
+#ifndef TAGLIB_WVPROPERTIES_H
+#define TAGLIB_WVPROPERTIES_H
+
+#include "taglib_export.h"
+#include "audioproperties.h"
+
+namespace TagLib {
+
+  namespace WavPack {
+
+    class File;
+
+    static const uint HeaderSize = 32;
+
+    //! An implementation of audio property reading for WavPack
+
+    /*!
+     * This reads the data from an WavPack stream found in the AudioProperties
+     * API.
+     */
+
+    class TAGLIB_EXPORT Properties : public AudioProperties
+    {
+    public:
+      /*!
+       * Create an instance of WavPack::Properties with the data read from the
+       * ByteVector \a data.
+       */
+      Properties(const ByteVector &data, long streamLength, ReadStyle style = Average);
+
+      /*!
+       * Destroys this WavPack::Properties instance.
+       */
+      virtual ~Properties();
+
+      // Reimplementations.
+
+      virtual int length() const;
+      virtual int bitrate() const;
+      virtual int sampleRate() const;
+      virtual int channels() const;
+
+      /*!
+       * Returns number of bits per sample.
+       */
+      int bitsPerSample() const;
+
+      /*!
+       * Returns WavPack version.
+       */
+      int version() const;
+
+    private:
+      void read();
+
+      class PropertiesPrivate;
+      PropertiesPrivate *d;
+    };
+  }
+}
+
+#endif