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3a57f2f721
Most of the churn here occurs because 'filesize' is one of the redefined filesystem functions, but some of the structs used by the native FS code also include a 'filesize' member variable which gets renamed by the macro in some but not all source files. It's easier to rename 'filesize()' to 'ffilesize()' rather than try to clean up the macro mess or renaming the struct members. There is weirdness with root_realpath() which now breaks on native builds because it was assumed to be unprefixed there. dir_get_info() was unprefixed everywhere but this just seems inconsistent; make it follow the FS_PREFIX() convention too. Change-Id: Ic3700c6234ea45f32679c1a8429d70fdb8f4088a
102 lines
3.2 KiB
C
102 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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*
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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 "platform.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->frequency = 44100;
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id3->length = 120*1000;
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id3->vbr = false;
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id3->filesize = ffilesize(fd);
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id3->bitrate = id3->filesize / 1024; /* size in kb */
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return true;
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}
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