C Program for ID3 Tagging (original) (raw)

`// C program for ID3 tagging of music files #include <stdio.h> #include <stdlib.h> #include <string.h>

struct tags // Structure to store tagging information. { char title[100], artist[100], album[100], track_num[100], year[100], genre[100]; };

void merge_file(char* file1, char* file2, char* file3) { FILE *f1, *f2, *f3; int ch; f1 = fopen(file1, "rb"); // Opening in write mode. f2 = fopen(file2, "rb"); f3 = fopen(file3, "wb");

if (f1 == NULL || f2 == NULL) {
    exit(EXIT_FAILURE);
}

while ((ch = fgetc(f1)) != EOF) // Appending tagging info.
    fputc(ch, f3);

while ((ch = fgetc(f2)) != EOF) // Appending media file info.
    fputc(ch, f3);

// Closing the files.
fclose(f1);
fclose(f2);
fclose(f3);

}

void tagging(char* file1, char* file2, char* file3) { int size = 0; char clean[100]; struct tags t; unsigned char pad1[7] = { 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x76 }; unsigned char pad2[3] = { 0x00, 0x00, 0x00 };

FILE* f1;
f1 = fopen(file1, "wb");

fprintf(f1, "ID3");
fwrite(pad1, sizeof(pad1), 1, f1); /*Essential tag to identify 
                                    as an ID3 tagged media file.*/

gets(clean); // Clearing the input stream.

// Taking input from user.
printf("\nEnter the title of the mp3:");
scanf("%[^\n]%*c", t.title);

printf("\nEnter the artist of the mp3:");
scanf("%[^\n]%*c", t.artist);

printf("\nEnter the album of the mp3.\n");
scanf("%[^\n]%*c", t.album);

printf("\nEnter the year of the mp3.\n");
scanf("%[^\n]%*c", t.year);

printf("\nEnter the track number of the mp3.\n");
scanf("%[^\n]%*c", t.track_num);

// Track Number
// Tag to identify track number.
fprintf(f1, "TRCK"); 

// Essential 3 NULL bits required for separation.
fwrite(pad2, sizeof(pad2), 1, f1); 

size = strlen(t.track_num);
size++; // Calculating size.

 // Appending the size of the track number to tag.
fprintf(f1, "%c", size);

// Essential 3 NULL bits required for separation.
fwrite(pad2, sizeof(pad2), 1, f1);

// Adding tag number entered by the user.
fprintf(f1, "%s", t.track_num); 

// Print Year
fprintf(f1, "TYER"); 
fwrite(pad2, sizeof(pad2), 1, f1); 
size = strlen(t.year);
size++; // Calculating size.
fprintf(f1, "%c", size);
fwrite(pad2, sizeof(pad2), 1, f1); 
fprintf(f1, "%s", t.year); 

// Print Title
fprintf(f1, "TIT2"); 
fwrite(pad2, sizeof(pad2), 1, f1); 
size = strlen(t.title);
size++; // Calculating size.
fprintf(f1, "%c", size);
fwrite(pad2, sizeof(pad2), 1, f1); 
fprintf(f1, "%s", t.title);

// Print Artist
fprintf(f1, "TPE1"); 
fwrite(pad2, sizeof(pad2), 1, f1); 
size = strlen(t.artist);
size++; // Calculating size.
fprintf(f1, "%c", size);
fwrite(pad2, sizeof(pad2), 1, f1); 
fprintf(f1, "%s", t.artist); 

// Print Album
fprintf(f1, "TALB"); 
fwrite(pad2, sizeof(pad2), 1, f1); 
size = strlen(t.album);
size++; // Calculating size.
fprintf(f1, "%c", size);
fwrite(pad2, sizeof(pad2), 1, f1); 
fprintf(f1, "%s", t.album); 

// Print Genre
fprintf(f1, "TCON"); // Tag to identify genre.
fwrite(pad2, sizeof(pad2), 1, f1);
size = strlen(t.genre);
size++; // Calculating size.
fprintf(f1, "%c", size); 
fwrite(pad2, sizeof(pad2), 1, f1); 
fprintf(f1, "%s", t.genre); 

fclose(f1); // Closing the file.

}

int main() { char file1[100] = "media_info.txt", file2[100], file3[100];

printf("\nEnter the input mp3 file name\n");
scanf("%s", file2);
printf("\nEnter the output mp3 file name\n");
scanf("%s", file3);

// Function to append media info to input file.
tagging(file1, file2, file3); 

// Function to merge media info and media
// input file.
merge_file(file1, file2, file3); 
return 0;

}