diff options
| -rw-r--r-- | apps/metadata/mod.c | 62 |
1 files changed, 52 insertions, 10 deletions
diff --git a/apps/metadata/mod.c b/apps/metadata/mod.c index dbedc6e62f..9595729c0b 100644 --- a/apps/metadata/mod.c +++ b/apps/metadata/mod.c @@ -19,40 +19,82 @@ * ****************************************************************************/ #include <stdio.h> -#include <string.h> #include <stdlib.h> #include <ctype.h> #include <inttypes.h> #include "system.h" #include "metadata.h" +#include <string-extra.h> #include "metadata_common.h" #include "metadata_parsers.h" #include "rbunicode.h" +#define MODULEHEADERSIZE 0x438 + bool get_mod_metadata(int fd, struct mp3entry* id3) { /* Use the trackname part of the id3 structure as a temporary buffer */ - unsigned char buf[1084]; - int read_bytes; + unsigned char buf[MODULEHEADERSIZE]; + unsigned char id[4]; + bool is_mod_file = false; char *p; - if ((lseek(fd, 0, SEEK_SET) < 0) - || ((read_bytes = read(fd, buf, sizeof(buf))) < 1084)) + || (read(fd, buf, sizeof(buf)) < MODULEHEADERSIZE)) { return false; } - - /* We don't do file format checking here - * There can be .mod files without any signatures out there */ + + if (read(fd, id, sizeof(id)) < (ssize_t)sizeof(id)) + return false; + + /* Mod type checking based on MikMod */ + /* Protracker and variants */ + if ((!memcmp(id, "M.K.", 4)) || (!memcmp(id, "M!K!", 4))) { + is_mod_file = true; + } + + /* Star Tracker */ + if (((!memcmp(id, "FLT", 3)) || (!memcmp(id, "EXO", 3))) && + (isdigit(id[3]))) { + char numchn = id[3] - '0'; + if (numchn == 4 || numchn == 8) + is_mod_file = true; + } + + /* Oktalyzer (Amiga) */ + if (!memcmp(id, "OKTA", 4)) { + is_mod_file = true; + } + + /* Oktalyser (Atari) */ + if (!memcmp(id, "CD81", 4)) { + is_mod_file = true; + } + + /* Fasttracker */ + if ((!memcmp(id + 1, "CHN", 3)) && (isdigit(id[0]))) { + is_mod_file = true; + } + /* Fasttracker or Taketracker */ + if (((!memcmp(id + 2, "CH", 2)) || (!memcmp(id + 2, "CN", 2))) + && (isdigit(id[0])) && (isdigit(id[1]))) { + is_mod_file = true; + } + + /* Don't try to play if we can't find a known mod type + * (there are mod files which have nothing to do with music) */ + if (!is_mod_file) + return false; p = id3->id3v2buf; /* Copy Title */ - strcpy(p, &buf[0x00]); + if (strlcpy(p, buf, sizeof(id3->id3v2buf)) >= sizeof(id3->id3v2buf)) + return false; + id3->title = p; - p += strlen(p)+1; id3->bitrate = filesize(fd)/1024; /* size in kb */ id3->frequency = 44100; |