field.cpp

更新mp3

// $Id: field.cpp,v 1.47 2002/11/03 00:41:27 t1mpy Exp $

// id3lib: a C++ library for creating and manipulating id3v1/v2 tags
// Copyright 1999, 2000  Scott Thomas Haug
// Copyright 2002 Thijmen Klok ([e-mail])

// This library 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 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 Library General Public
// License for more details.
//
// You should have received a copy of the GNU Library 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.

// The id3lib authors encourage improvements and optimisations to be sent to
// the id3lib coordinator.  Please see the README file for details on where to
// send such submissions.  See the AUTHORS file for a list of people who have
// contributed to id3lib.  See the ChangeLog file for a list of changes to
// id3lib.  These files are distributed with id3lib at
// http://download.sourceforge.net/id3lib/


#include "field_impl.h"
#include "id3/utils.h" // has <config.h> "id3/id3lib_streams.h" "id3/globals.h" "id3/id3lib_strings.h"
#include "field_def.h"
#include "frame_def.h"
#include "readers.h"
#include <assert.h>

using namespace dami;

// This is used for unimplemented frames so that their data is preserved when
// parsing and rendering
static ID3_FieldDef ID3FD_Unimplemented[] =
{
  {
    ID3FN_DATA,                         // FIELD NAME
    ID3FTY_BINARY,                      // FIELD TYPE
    0,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  { ID3FN_NOFIELD }
};

const ID3_FieldDef* ID3_FieldDef::DEFAULT = ID3FD_Unimplemented;

static ID3_FieldDef ID3FD_URL[] =
{
  {
    ID3FN_URL,                          // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    0,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  { ID3FN_NOFIELD }
};

static ID3_FieldDef ID3FD_UserURL[] =
{
  {
    ID3FN_TEXTENC,                      // FIELD NAME
    ID3FTY_INTEGER,                     // FIELD TYPE
    1,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_DESCRIPTION,                  // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    0,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_CSTR | ID3FF_ENCODABLE,       // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_URL,                          // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    0,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  { ID3FN_NOFIELD }
};

static ID3_FieldDef ID3FD_Text[] =
{
  {
    ID3FN_TEXTENC,                      // FIELD NAME
    ID3FTY_INTEGER,                     // FIELD TYPE
    1,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_TEXT,                         // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    0,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_ENCODABLE,                    // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  { ID3FN_NOFIELD }
};


static ID3_FieldDef ID3FD_UserText[] =
{
  {
    ID3FN_TEXTENC,                      // FIELD NAME
    ID3FTY_INTEGER,                     // FIELD TYPE
    1,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_DESCRIPTION,                  // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    0,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_CSTR | ID3FF_ENCODABLE,       // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_TEXT,                         // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    0,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_ENCODABLE,                    // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  { ID3FN_NOFIELD }
};


static ID3_FieldDef ID3FD_GeneralText[] =
{
  {
    ID3FN_TEXTENC,                      // FIELD NAME
    ID3FTY_INTEGER,                     // FIELD TYPE
    1,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_LANGUAGE,                     // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    3,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_DESCRIPTION,                  // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    0,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_CSTR | ID3FF_ENCODABLE,       // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_TEXT,                         // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    0,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_ENCODABLE,                    // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  { ID3FN_NOFIELD }
};

static ID3_FieldDef ID3FD_TermsOfUse[] =
{
  {
    ID3FN_TEXTENC,                      // FIELD NAME
    ID3FTY_INTEGER,                     // FIELD TYPE
    1,                                  // FIXED LEN
    ID3V2_3_0,                          // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_LANGUAGE,                     // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    3,                                  // FIXED LEN
    ID3V2_3_0,                          // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_TEXT,                         // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    0,                                  // FIXED LEN
    ID3V2_3_0,                          // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_ENCODABLE,                    // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  { ID3FN_NOFIELD }
};

static ID3_FieldDef ID3FD_LinkedInfo[] =
{
  {
    ID3FN_ID,                           // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    3,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_2_1,                          // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_ID,                           // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    4,                                  // FIXED LEN
    ID3V2_3_0,                          // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_URL,                          // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    0,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_CSTR,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_TEXT,                         // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    0,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  { ID3FN_NOFIELD }
};

static ID3_FieldDef ID3FD_Picture[] =
{
  {
    ID3FN_TEXTENC,                      // FIELD NAME
    ID3FTY_INTEGER,                     // FIELD TYPE
    1,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_IMAGEFORMAT,                  // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    3,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_2_1,                          // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_MIMETYPE,                     // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    0,                                  // FIXED LEN
    ID3V2_3_0,                          // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_CSTR,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_PICTURETYPE,                  // FIELD NAME
    ID3FTY_INTEGER,                     // FIELD TYPE
    1,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_DESCRIPTION,                  // FIELD NAME
    ID3FTY_TEXTSTRING,                  // FIELD TYPE
    0,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_CSTR | ID3FF_ENCODABLE,       // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  {
    ID3FN_DATA,                         // FIELD NAME
    ID3FTY_BINARY,                      // FIELD TYPE
    0,                                  // FIXED LEN
    ID3V2_EARLIEST,                     // INITIAL SPEC
    ID3V2_LATEST,                       // ENDING SPEC
    ID3FF_NONE,                         // FLAGS
    ID3FN_NOFIELD                       // LINKED FIELD
  },
  { ID3FN_NOFIELD }