diff options
Diffstat (limited to 'apps/metadata/sgc.c')
-rw-r--r-- | apps/metadata/sgc.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/apps/metadata/sgc.c b/apps/metadata/sgc.c new file mode 100644 index 0000000000..9e16de2c76 --- /dev/null +++ b/apps/metadata/sgc.c | |||
@@ -0,0 +1,67 @@ | |||
1 | #include <stdio.h> | ||
2 | #include <string.h> | ||
3 | #include <stdlib.h> | ||
4 | #include <ctype.h> | ||
5 | #include <inttypes.h> | ||
6 | |||
7 | #include "system.h" | ||
8 | #include "metadata.h" | ||
9 | #include "metadata_common.h" | ||
10 | #include "metadata_parsers.h" | ||
11 | #include "rbunicode.h" | ||
12 | |||
13 | bool parse_sgc_header(int fd, struct mp3entry* id3) | ||
14 | { | ||
15 | /* Use the trackname part of the id3 structure as a temporary buffer */ | ||
16 | unsigned char* buf = (unsigned char *)id3->path; | ||
17 | |||
18 | lseek(fd, 0, SEEK_SET); | ||
19 | if (read(fd, buf, 0xA0) < 0xA0) | ||
20 | return false; | ||
21 | |||
22 | /* calculate track length with number of tracks */ | ||
23 | id3->length = buf[37] * 1000; | ||
24 | |||
25 | /* If meta info was found in the m3u skip next step */ | ||
26 | if (id3->title && id3->title[0]) return true; | ||
27 | |||
28 | char *p = id3->id3v2buf; | ||
29 | |||
30 | /* Some metadata entries have 32 bytes length */ | ||
31 | /* Game */ | ||
32 | memcpy(p, &buf[64], 32); *(p + 33) = '\0'; | ||
33 | id3->title = p; | ||
34 | p += strlen(p)+1; | ||
35 | |||
36 | /* Artist */ | ||
37 | memcpy(p, &buf[96], 32); *(p + 33) = '\0'; | ||
38 | id3->artist = p; | ||
39 | p += strlen(p)+1; | ||
40 | |||
41 | /* Copyright */ | ||
42 | memcpy(p, &buf[128], 32); *(p + 33) = '\0'; | ||
43 | id3->album = p; | ||
44 | p += strlen(p)+1; | ||
45 | return true; | ||
46 | } | ||
47 | |||
48 | |||
49 | bool get_sgc_metadata(int fd, struct mp3entry* id3) | ||
50 | { | ||
51 | uint32_t sgc_type; | ||
52 | if ((lseek(fd, 0, SEEK_SET) < 0) || | ||
53 | read_uint32be(fd, &sgc_type) != (int)sizeof(sgc_type)) | ||
54 | return false; | ||
55 | |||
56 | id3->vbr = false; | ||
57 | id3->filesize = filesize(fd); | ||
58 | /* we only render 16 bits, 44.1KHz, Stereo */ | ||
59 | id3->bitrate = 706; | ||
60 | id3->frequency = 44100; | ||
61 | |||
62 | /* Make sure this is an SGC file */ | ||
63 | if (sgc_type != FOURCC('S','G','C',0x1A)) | ||
64 | return false; | ||
65 | |||
66 | return parse_sgc_header(fd, id3); | ||
67 | } | ||