1a1ac92f45
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30105 a1c6a512-1295-4272-9138-f99709370657
103 lines
3.2 KiB
C
103 lines
3.2 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2005 Dave Chapman
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <inttypes.h>
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#include "system.h"
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#include "metadata.h"
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#include <string-extra.h>
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#include "metadata_common.h"
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#include "metadata_parsers.h"
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#include "rbunicode.h"
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#define MODULEHEADERSIZE 0x438
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bool get_mod_metadata(int fd, struct mp3entry* id3)
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{
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/* Use the trackname part of the id3 structure as a temporary buffer */
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unsigned char *buf = id3->id3v2buf;
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unsigned char id[4];
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bool is_mod_file = false;
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/* Seek to file begin */
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if (lseek(fd, 0, SEEK_SET) < 0)
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return false;
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/* Use id3v2buf as buffer for the track name */
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if (read(fd, buf, sizeof(id3->id3v2buf)) < (ssize_t)sizeof(id3->id3v2buf))
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return false;
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/* Seek to MOD ID position */
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if (lseek(fd, MODULEHEADERSIZE, SEEK_SET) < 0)
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return false;
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/* Read MOD ID */
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if (read(fd, id, sizeof(id)) < (ssize_t)sizeof(id))
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return false;
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/* Mod type checking based on MikMod */
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/* Protracker and variants */
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if ((!memcmp(id, "M.K.", 4)) || (!memcmp(id, "M!K!", 4))) {
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is_mod_file = true;
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}
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/* Star Tracker */
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if (((!memcmp(id, "FLT", 3)) || (!memcmp(id, "EXO", 3))) &&
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(isdigit(id[3]))) {
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char numchn = id[3] - '0';
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if (numchn == 4 || numchn == 8)
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is_mod_file = true;
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}
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/* Oktalyzer (Amiga) */
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if (!memcmp(id, "OKTA", 4)) {
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is_mod_file = true;
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}
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/* Oktalyser (Atari) */
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if (!memcmp(id, "CD81", 4)) {
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is_mod_file = true;
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}
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/* Fasttracker */
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if ((!memcmp(id + 1, "CHN", 3)) && (isdigit(id[0]))) {
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is_mod_file = true;
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}
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/* Fasttracker or Taketracker */
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if (((!memcmp(id + 2, "CH", 2)) || (!memcmp(id + 2, "CN", 2)))
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&& (isdigit(id[0])) && (isdigit(id[1]))) {
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is_mod_file = true;
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}
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/* Don't try to play if we can't find a known mod type
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* (there are mod files which have nothing to do with music) */
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if (!is_mod_file)
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return false;
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id3->title = id3->id3v2buf; /* Point title to previous read ID3 buffer. */
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id3->bitrate = filesize(fd)/1024; /* size in kb */
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id3->frequency = 44100;
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id3->length = 120*1000;
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id3->vbr = false;
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id3->filesize = filesize(fd);
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return true;
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}
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