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
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
#include "id3parse.h"
#include "genretab.h"
#include <string.h>
#include <errno.h>
id3Parse::id3Parse(const char *filename)
{
flnam = new char[strlen(filename)+1];
strcpy(flnam, filename);
song = new id3header;
memset(song->songname, 0, 31 * sizeof (char));
memset(song->artist, 0, 31 * sizeof (char));
memset(song->type, 0, 31 * sizeof (char));
memset(song->year, 0, 5 * sizeof (char));
memset(song->etc, 0, 31 * sizeof (char));
song->genre = '\0';
//memset(song->genre_txt, 0, 41 * sizeof (char));
//strncpy(song->genre_txt, "Not supported yet!",40);
}
id3Parse::~id3Parse()
{
delete song;
delete[] flnam;
}
int
id3Parse::search_header(FILE *fp)
{
int c, flag = 0, success = 0;
if ( fseek(fp, -128, SEEK_END) < 0)
return success;
for(;;)
{
if ( (c = fgetc(fp)) < 0)
break;
if (c == 0x54)
{
if ( fgetc(fp) == 0x41)
{
if (fgetc(fp) == 0x47)
{
success = 1;
break;
}
}
flag = 0;
}
else
flag = 0;
}
return success;
}
char *
id3Parse::getGenre(const unsigned char genre)
{
#if 0
int i;
struct _genre_table *tmp=&genre_table[0];
for(i=0;tmp[i].text != NULL;i++) {
if(tmp[i].genre == genre)
return tmp[i].text;
}
return "Unknown type";
#endif
return genre_table[genre];
}
struct id3header *
id3Parse::parseID3()
{
FILE *fp;
int success = 0;
if (!(fp = fopen(flnam, "r")) || !search_header(fp))
return NULL;
char buf[40];
if (fread(buf, 30, sizeof(char), fp) == sizeof(char))
{
strncpy(song->songname, buf, 30);
song->songname[30] = '\0';
success++;
}
if (fread(buf, 30, sizeof(char), fp) == sizeof(char))
{
strncpy(song->artist, buf, 30);
song->artist[30] = '\0';
success++;
}
if (fread(buf, 30, sizeof(char), fp) == sizeof(char))
{
strncpy(song->type, buf, 30);
song->type[30] = '\0';
success++;
}
if (fread(buf, 4, sizeof(char), fp) == sizeof(char))
{
strncpy(song->year, buf, 4);
song->year[4] = '\0';
success++;
}
if (fread(buf, 30, sizeof(char), fp) == sizeof(char))
{
strncpy(song->etc, buf, 30);
song->etc[30] = '\0';
success++;
}
if (fread(buf, 1, sizeof(char), fp) == sizeof(char))
{
song->genre = (unsigned char)buf[0];
success++;
}
fclose(fp);
if (success == 6)
return song;
else
return NULL;
}
int
id3Parse::appendNewID3Header(FILE *fp)
{
int success = 0;
if (fseek(fp, 0, SEEK_END) < 0)
return success;
char c[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0x54, 0x41, 0x47 };
printf("Writing header..\n");
if ( fwrite((void*)c, sizeof(char), 31, fp) != 31)
return success;
return (success = 1);
}
int
id3Parse::writeID3(struct id3header *newID3)
{
int success = 0;
FILE *fp = fopen(flnam, "r+");
if (!fp)
return success;
if (!search_header(fp) && !(appendNewID3Header(fp)))
{
fclose(fp);
return success;
}
size_t c;
if (
((c = fwrite(newID3->songname, sizeof(char), 30, fp)) == 30) &&
(fwrite(newID3->artist, sizeof(char), 30, fp) == 30) &&
(fwrite(newID3->type, sizeof(char), 30, fp) == 30) &&
(fwrite(newID3->year, sizeof(char), 4, fp) == 4) &&
(fwrite(newID3->etc, sizeof(char), 30, fp) == 30) &&
(fwrite(&(newID3->genre), sizeof(char), 1, fp) == 1))
success = 1;
printf("c=%d\n", c); fflush(stdout);
fclose(fp);
return success;
}
|
