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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <inttypes.h>
#include "system.h"
#include "metadata.h"
#include "metadata_common.h"
#include "metadata_parsers.h"
#include "rbunicode.h"
static bool parse_gbs_header(int fd, struct mp3entry* id3)
{
/* Use the trackname part of the id3 structure as a temporary buffer */
unsigned char* buf = (unsigned char *)id3->path;
lseek(fd, 0, SEEK_SET);
if (read(fd, buf, 112) < 112)
return false;
/* Calculate track length with number of subtracks */
id3->length = buf[4] * 1000;
/* If meta info was found in the m3u skip next step */
if (id3->title && id3->title[0]) return true;
char *p = id3->id3v2buf;
/* Some metadata entries have 32 bytes length */
/* Game */
memcpy(p, &buf[16], 32); *(p + 33) = '\0';
id3->title = p;
p += strlen(p)+1;
/* Artist */
memcpy(p, &buf[48], 32); *(p + 33) = '\0';
id3->artist = p;
p += strlen(p)+1;
/* Copyright */
memcpy(p, &buf[80], 32); *(p + 33) = '\0';
id3->album = p;
return true;
}
bool get_gbs_metadata(int fd, struct mp3entry* id3)
{
char gbs_type[3];
if ((lseek(fd, 0, SEEK_SET) < 0) ||
(read(fd, gbs_type, 3) < 3))
return false;
id3->vbr = false;
id3->filesize = filesize(fd);
/* we only render 16 bits, 44.1KHz, Stereo */
id3->bitrate = 706;
id3->frequency = 44100;
/* Check for GBS magic */
if (memcmp( gbs_type, "GBS", 3 ) != 0)
return false;
return parse_gbs_header(fd, id3);
}
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