get_header

Digital Signal Processing Library

Voice Lab


get_header

int get_header(FILE *in_file_ptr, int *data_length, int *header_length)
{
        char header[2];

        /* go to beginning of file */
        fseek(in_file_ptr,0,0);

        /* read 1 character from beginning of file */
        fread(header, sizeof(char), 1, in_file_ptr);

        /* Test which character is at the beginning of the file */
        switch(header[0]) {
        case 'R':
                sample_rate = check_wav(in_file_ptr, data_length, header_length);
                break;
        case 'F':
                sample_rate = check_nsp(in_file_ptr, data_length, header_length);
                break;
        default:
                /* unknown file header */
                fseek(in_file_ptr,0,SEEK_SET);
                sample_rate = -1;
                (*header_length) = ftell(in_file_ptr);
                break;
        }
        return(sample_rate);
}