061991fe60
it appears a one-character typo in the cmake_minimum_required line prevents it from compiling under CMake 4.0. in order to fix that, I had to take this thing out of submodules... it is recommended to do this after you pull; git submodule deinit extern/libsndfile
133 lines
3.4 KiB
C
133 lines
3.4 KiB
C
/*
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** Copyright (C) 2010-2017 Erik de Castro Lopo <erikd@mega-nerd.com>
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU Lesser General Public License as published by
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** the Free Software Foundation; either version 2.1 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU Lesser General Public License for more details.
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**
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** You should have received a copy of the GNU Lesser General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "sfconfig.h"
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#include <stdio.h>
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#include <fcntl.h>
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#include <string.h>
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#include <ctype.h>
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#include "sndfile.h"
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#include "sfendian.h"
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#include "common.h"
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#include "id3.h"
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#if HAVE_MPEG
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#include <lame/lame.h>
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struct id3v1_genre_handler_userdata
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{ int number ;
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const char *ret ;
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} ;
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static void
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id3v1_genre_handler (int number, const char *description, void *userdata)
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{ struct id3v1_genre_handler_userdata *data = (struct id3v1_genre_handler_userdata *) userdata ;
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if (data->number == number)
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data->ret = description ;
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}
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const char *
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id3_lookup_v1_genre (int number)
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{ struct id3v1_genre_handler_userdata data ;
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data.number = number ;
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data.ret = NULL ;
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id3tag_genre_list (id3v1_genre_handler, &data) ;
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return data.ret ;
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}
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#else /* HAVE_MPEG */
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const char *
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id3_lookup_v1_genre (int UNUSED (number))
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{ return NULL ;
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}
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#endif
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int
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id3_skip (SF_PRIVATE * psf)
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{ unsigned char buf [10] ;
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int offset ;
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memset (buf, 0, sizeof (buf)) ;
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psf_binheader_readf (psf, "pb", 0, buf, 10) ;
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if (buf [0] == 'I' && buf [1] == 'D' && buf [2] == '3')
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{ psf->id3_header.minor_version = buf [3] ;
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offset = buf [6] & 0x7f ;
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offset = (offset << 7) | (buf [7] & 0x7f) ;
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offset = (offset << 7) | (buf [8] & 0x7f) ;
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offset = (offset << 7) | (buf [9] & 0x7f) ;
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/*
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** ID3 count field is how many bytes of ID3v2 header FOLLOW the ten
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** bytes of header magic and offset, NOT the total ID3v2 header len.
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*/
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psf->id3_header.len = offset + 10 ;
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psf->id3_header.offset = psf->fileoffset ;
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psf_log_printf (psf, " ID3v2.%d header length : %d\n----------------------------------------\n",
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psf->id3_header.minor_version, psf->id3_header.len) ;
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/* Never want to jump backwards in a file. */
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if (offset < 0)
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return 0 ;
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/* Position ourselves at the new file offset. */
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if (psf->fileoffset + psf->id3_header.len < psf->filelength)
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{ psf_binheader_readf (psf, "p!", psf->id3_header.len) ;
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psf->fileoffset += psf->id3_header.len ;
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return 1 ;
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} ;
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} ;
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return 0 ;
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} /* id3_skip */
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const char *
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id3_process_v2_genre (const char *genre)
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{ int num = 0 ;
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char c ;
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const char *ptr ;
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if (!genre)
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return NULL ;
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/*
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** Genre may require more processing.
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**
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** It is allowed to have numeric references to the genre table from ID3v1.
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** We'll just convert the simple case here, strings of the format "(nnn)".
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*/
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ptr = genre ;
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if (ptr [0] == '(' && (c = *++ ptr) && isdigit (c))
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{ num = c - '0' ;
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while ((c == *++ ptr) && isdigit (c))
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num = num * 10 + (c - '0') ;
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if (c == ')' && (c = *++ ptr) == '\0' && num < 256)
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if ((ptr = id3_lookup_v1_genre (num)))
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return ptr ;
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} ;
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return genre ;
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} /* id3_process_v2_genre */
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