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;
}
|