blob: 833735a9b2cfc9791ce385e2553fa4e212680878 (
plain)
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
|
#include "tag.h"
#include <id3tag.h>
#include <cstdlib>
#include <stdexcept>
void ID3Tag::tag_add_string(struct id3_tag *id3tag, const char *type, const char *id) {
struct id3_frame *frame = id3_tag_findframe(id3tag, id, 0);
if(frame == NULL) {
return;
}
if(frame->nfields != 2) {
throw std::runtime_error("unexpected nfields value");
}
const union id3_field *field = id3_frame_field(frame, 1);
unsigned int nstrings = id3_field_getnstrings(field);
for(unsigned int i = 0; i < nstrings; i++) {
const id3_ucs4_t *ucs4 = id3_field_getstrings(field, i);
if(ucs4 == NULL) {
throw std::runtime_error("ucs4 is NULL");
}
id3_utf8_t *utf8 = id3_ucs4_utf8duplicate(ucs4);
fields[type] = (char*)utf8;
free(utf8);
}
}
ID3Tag::ID3Tag(const std::string filename) {
struct id3_file *file = id3_file_open(filename.c_str(), ID3_FILE_MODE_READONLY);
if(file == NULL) {
throw std::runtime_error("failed to open file for reading");
}
struct id3_tag *id3tag = id3_file_tag(file);
if(id3tag == NULL) {
throw std::runtime_error("tag is NULL");
}
tag_add_string(id3tag, "artist", ID3_FRAME_ARTIST);
tag_add_string(id3tag, "title", ID3_FRAME_TITLE);
tag_add_string(id3tag, "album", ID3_FRAME_ALBUM);
id3_file_close(file);
}
|
