#include <stdio.h>#define SPHERE_LIBRARY_CODE#include <sp/sphere.h>#include <string.h>#include <sys/stat.h>int correct_out_of_date_headers(SP_FILE *sp){    char *proc="correct_out_of_date_headers " SPHERE_VERSION_STR;    struct header_t *header;    struct stat fileinfo;    SP_INTEGER samp_cnt, chan_cnt, samp_nb_cnt, new_samp_cnt;    int changes_have_occured = FALSE;        if (sp == SPNULL)	return_err(proc,100,0,"Null SPFILE structure");    /******* These corrections  only applies to files opened for read *******/    if (sp->open_mode != SP_mode_read)	return_err(proc,200,0,		   "Tried to correct a header in a file opened for write");    header = sp->read_spifr->header;    /* check the sample count field to make sure it's the number of samples */    /* per channel.  If not, correct the header now IF THE FILE is NOT a    */    /* pipe.  Pipes are assumed NOT to have this characteristic.            */    if (sp->read_spifr->status->is_disk_file){	if (stat(sp->read_spifr->status->external_filename,&fileinfo) != 0)	    return_err(proc,300,300,		       rsprintf("Unable to stat file '%s'\n",				sp->read_spifr->status->external_filename));	/* get the sample_count, channel_count, sample_n_bytes fields from  */	/* the header */	if (h_get_field(header, SAMPLE_COUNT_FIELD,			T_INTEGER, (void *)&samp_cnt) != 0)	    return_err(proc,301,301,	       rsprintf("Unable to extract %s field from header of file '%s'\n",			SAMPLE_COUNT_FIELD,			sp->read_spifr->status->external_filename));	if (h_get_field(header, SAMPLE_N_BYTES_FIELD,			T_INTEGER, (void *)&samp_nb_cnt) != 0)	    return_err(proc,302,302,	       rsprintf("Unable to extract %s field from header of file '%s'\n",			SAMPLE_N_BYTES_FIELD,			sp->read_spifr->status->external_filename));	if (h_get_field(header, CHANNEL_COUNT_FIELD,			T_INTEGER, (void *)&chan_cnt) != 0)	    chan_cnt = 1;	if (chan_cnt != 1){	    if (samp_cnt * samp_nb_cnt == 		fileinfo.st_size - sp->read_spifr->waveform->header_data_size) {		/****** WE HAVE AN OUT-OF-DATE Header ******/		/* change the sample count to be the number of samples per    */		/* channel */		new_samp_cnt = samp_cnt / chan_cnt;		/* update the header IN memory! */		if (h_set_field(header, SAMPLE_COUNT_FIELD,				T_INTEGER, &new_samp_cnt) != 0)		    return_err(proc,303,303,			       rsprintf("%s field in file '%s'\n",					"Unable to correct the sample_count",  				    sp->read_spifr->status->external_filename));		changes_have_occured = TRUE;	    }	}    }    if (changes_have_occured)	if ((sp->read_spifr->waveform->header_data_size = 	     sp_header_size(sp->read_spifr->header)) < 0){	    return_err(proc,1000,1000,		       rsprintf("Unable to get SPHERE header size%s",				"of corrected header"));	}	    return_success(proc,0,0,"ok");}