Gary

#pragma comment(lib, "mp4ffd.lib")

uint32_t read_callback(void *user_data, void *buffer, uint32_t length)
{
    return fread(buffer, 1, length, (FILE*)user_data);
}

uint32_t seek_callback(void *user_data, uint64_t position)
{
    return fseek((FILE*)user_data, position, SEEK_SET);
}

int main(int argc, char* argv[])
{
    FILE *mp4File;
    mp4ff_callback_t *mp4cb;
    mp4ff_t *infile;
    char  *pcFile = "Z:\Leyline-so_wrong.m4a";
    int   j, k;
    char *pVal;
    char *tag = NULL, *item = NULL;
    char szAnsi[256];
    
    mp4File = fopen(pcFile, "rb");
    
    mp4cb = malloc(sizeof(mp4ff_callback_t));
    mp4cb->read = read_callback;
    mp4cb->seek = seek_callback;
    mp4cb->user_data = mp4File;
    
    infile = mp4ff_open_read(mp4cb);
    
    if (!infile) {
        /* unable to open file */
        fprintf(stderr, "Error opening file: %s\n", pcFile);
        return 1;
    }
    pVal = NULL;
    if (mp4ff_meta_get_title(infile, &pVal))
    printf("title:%s\n", szAnsi);
    
    if (mp4ff_meta_get_artist(infile, &pVal)) {
        utf8_to_ansi(pVal, szAnsi);
        printf("artist:%s\n", szAnsi);
    }
    
    if (mp4ff_meta_get_album(infile, &pVal))
    printf("album:%s\n", pVal);
    
    if (mp4ff_meta_get_genre(infile, &pVal))
    printf("genre:%s\n", pVal);
    
    //列舉
    /*  j = mp4ff_meta_get_num_items(infile);
    for (k = 0; k <j; k++) {
        if (mp4ff_meta_get_by_index(infile, k, &item, &tag)) {
            if (item != NULL && tag != NULL) {
                fprintf(stderr, "%s: %s\n", item, tag);
                free(item); item = NULL;
                free(tag); tag = NULL;
            }
        }
    }
    */
    
    return 0;
}