id3v2.cpp
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/*
mpg123clr: MPEG Audio Decoder library Common Language Runtime version.
copyright 2009 by Malcolm Boczek - free software under the terms of the LGPL 2.1
mpg123clr.dll is a derivative work of libmpg123 - all original mpg123 licensing terms apply.
All rights to this work freely assigned to the mpg123 project.
*/
/*
libmpg123: MPEG Audio Decoder library
copyright 1995-2008 by the mpg123 project - free software under the terms of the LGPL 2.1
see COPYING and AUTHORS files in distribution or http://mpg123.org
*/
/*
1.8.1.0 04-Aug-09 Initial release.
1.9.0.0 01-Oct-09 Technical cleanup - subst nullptr for NULL (mb)
1.10.0.0 30-Nov-09 Add test for null base (sb) - in addition to null string test (mb)
(required if v2 referenced prior to file scan)
*/
#include "StdAfx.h"
#include "id3v2.h"
mpg123clr::id3::mpg123id3v2::mpg123id3v2(void)
{
}
mpg123clr::id3::mpg123id3v2::mpg123id3v2(mpg123_id3v2* sb)
{
this->sb = sb;
}
// Destructor
mpg123clr::id3::mpg123id3v2::~mpg123id3v2(void)
{
// clean up code to release managed resources
// ...
// call Finalizer to clean up unmanaged resources
this->!mpg123id3v2();
}
// Finalizer
mpg123clr::id3::mpg123id3v2::!mpg123id3v2(void)
{
// we do not create the underlying structure, so shouldn't dispose it either...
}
String^ mpg123clr::id3::mpg123id3v2::title::get()
{
// updated: more efficient "union style" mpg123str
mpg123str^ str = (sb == nullptr || sb->title == nullptr) ? gcnew mpg123str("") : gcnew mpg123str(sb->title);
// Deprecated remnant - uses "overlayed style" mpg123str - note inefficient PtrToStrucure...
// mpg123str^% str = gcnew mpg123str;
// Marshal::PtrToStructure((IntPtr)sb->title, str);
return str->Text;
}
String^ mpg123clr::id3::mpg123id3v2::artist::get()
{
mpg123str^ str = (sb == nullptr || sb->artist == nullptr) ? gcnew mpg123str("") : gcnew mpg123str(sb->artist);
return str->Text;
}
String^ mpg123clr::id3::mpg123id3v2::album::get()
{
mpg123str^ str = (sb == nullptr || sb->album == nullptr) ? gcnew mpg123str("") : gcnew mpg123str(sb->album);
return str->Text;
}
String^ mpg123clr::id3::mpg123id3v2::comment::get()
{
mpg123str^ str = (sb == nullptr || sb->comment == nullptr) ? gcnew mpg123str("") : gcnew mpg123str(sb->comment);
return str->Text;
}
String^ mpg123clr::id3::mpg123id3v2::year::get()
{
mpg123str^ str = (sb == nullptr || sb->year == nullptr) ? gcnew mpg123str("") : gcnew mpg123str(sb->year);
return str->Text;
}
String^ mpg123clr::id3::mpg123id3v2::genre::get()
{
mpg123str^ str = (sb == nullptr || sb->genre == nullptr) ? gcnew mpg123str("") : gcnew mpg123str(sb->genre);
return str->Text;
}
int mpg123clr::id3::mpg123id3v2::version::get()
{
return sb->version;
}
array<mpg123clr::mpg123text^>^ mpg123clr::id3::mpg123id3v2::MakeTextList(mpg123_text* ptr, size_t count)
{
// WARN 4267 - clr limited to 32bit-length-size arrays!!
array<mpg123clr::mpg123text^>^ ary = gcnew array<mpg123clr::mpg123text^>((int)count);
for (int ii = 0; ii < ary->Length; ii++)
{
// Remnant - for explicit layout
// mpg123text^% txt = gcnew mpg123text;
// Marshal::PtrToStructure((IntPtr)ptr++, txt);
// New code - for "handle style" structure
mpg123text^% txt = gcnew mpg123text(ptr++);
ary[ii] = txt;
}
return ary;
}
array<mpg123clr::mpg123text^>^ mpg123clr::id3::mpg123id3v2::Comments::get()
{
return MakeTextList(sb->comment_list, sb->comments);
}
array<mpg123clr::mpg123text^>^ mpg123clr::id3::mpg123id3v2::Texts::get()
{
return MakeTextList(sb->text, sb->texts);
}
array<mpg123clr::mpg123text^>^ mpg123clr::id3::mpg123id3v2::Extras::get()
{
return MakeTextList(sb->extra, sb->extras);
}