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//---------------------------------------------------------------------------
// Provide read-only access to flac stream tags. Supports id3v1 tags
// without any additional libraries.
//
// Copyright (c) 2002 by Drew Hess <dhess@bothan.net>
//
// code theft from Josh Coalson's flac xmms plugin (C) 2001 by Josh Coalson
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//--------------------------------------------------------------------------
#include "FlacId3Tag.h"
#include <cstdio>
#include <cstring>
#include "reader.h"
static bool
findId3Tag (reader_type * f, char * tag)
{
if (reader_seek (f, -128, SEEK_END) != 0)
return false;
if (reader_read (tag, 128, f) != 128)
return false;
return strncmp (tag, "TAG", 3) == 0 ? true : false;
} // findId3Tag
namespace Flac
{
typedef struct {
char raw[128];
char title[31];
char artist[31];
char album[31];
char comment[31];
char year[5];
char track[4];
char genre[4];
} id3v1_struct;
// static
bool
FlacId3Tag::hasId3 (const std::string & name)
{
static char tag[128];
reader_type * f = reader_open (name.c_str (), NULL, NULL);
if (!f)
return false;
bool status = findId3Tag (f, tag);
reader_close (f);
return status;
} // FlacId3Tag::hasId3
FlacId3Tag::FlacId3Tag (const std::string & name)
: FlacTag (name)
{
reader_type * f = reader_open (name.c_str (), NULL, NULL);
if (!f)
return;
id3v1_struct tag;
memset ((void *) & tag, 0, sizeof (id3v1_struct));
if (!findId3Tag (f, tag.raw))
return;
memcpy(tag.title, tag.raw+3, 30);
memcpy(tag.artist, tag.raw+33, 30);
memcpy(tag.album, tag.raw+63, 30);
memcpy(tag.year, tag.raw+93, 4);
memcpy(tag.comment, tag.raw+97, 30);
sprintf (tag.genre, "%u", (unsigned char) tag.raw[127]);
sprintf (tag.track, "%u", (unsigned char) tag.raw[126]);
_artist = tag.artist;
_title = tag.title;
_track = tag.track;
_album = tag.album;
_year = tag.year;
_comment = tag.comment;
_genre = tag.genre;
} // FlacId3Tag::FlacId3Tag
} // namespace Flac
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