1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
#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_sgc_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, 0xA0) < 0xA0)
return false;
/* calculate track length with number of tracks */
id3->length = buf[37] * 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[64], 32); *(p + 33) = '\0';
id3->title = p;
p += strlen(p)+1;
/* Artist */
memcpy(p, &buf[96], 32); *(p + 33) = '\0';
id3->artist = p;
p += strlen(p)+1;
/* Copyright */
memcpy(p, &buf[128], 32); *(p + 33) = '\0';
id3->album = p;
p += strlen(p)+1;
return true;
}
bool get_sgc_metadata(int fd, struct mp3entry* id3)
{
uint32_t sgc_type;
if ((lseek(fd, 0, SEEK_SET) < 0) ||
read_uint32be(fd, &sgc_type) != (int)sizeof(sgc_type))
return false;
id3->vbr = false;
id3->filesize = filesize(fd);
/* we only render 16 bits, 44.1KHz, Stereo */
id3->bitrate = 706;
id3->frequency = 44100;
/* Make sure this is an SGC file */
if (sgc_type != FOURCC('S','G','C',0x1A))
return false;
return parse_sgc_header(fd, id3);
}
|
