/***************************************************************************    copyright            : (C) 2006 by Luká? Lalinsky    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;}