ComposerDesktopProject/dev/science/brownian.c

/*	SYNTHESIS FROM RANDOM WALK THROUGH PITCH AND REAL SPACE
 */

#include <stdio.h>
#include <stdlib.h>
#include <structures.h>
#include <tkglobals.h>
#include <pnames.h>
#include <filetype.h>
#include <processno.h>
#include <modeno.h>
#include <logic.h>
#include <globcon.h>
#include <cdpmain.h>
#include <math.h>
#include <mixxcon.h>
#include <osbind.h>
#include <standalone.h>
#include <science.h>
#include <ctype.h>
#include <sfsys.h>
#include <string.h>
#include <srates.h>

#define ROOT2		(1.4142136)

#define evsamps		total_windows

#define BRPQ	0.125		//	pitch quantisation to 1/16-tones
#define BRTQ	0.010		//	time quantisation to 10mS = 1/100th sec
#define BRSQ	0.03125		//	space quantisation: number of spatial steps between lspkrs = 32
#define BRAQ	0.5			//	amp step quantisation = 1/2 dB
#ifdef unix
#define round(x) lround((x))
#endif

char errstr[2400];

int anal_infiles = 1;
int	sloom = 0;
int sloombatch = 0;

const char* cdp_version = "7.0.0";

//CDP LIB REPLACEMENTS
static int check_brownian_param_validity_and_consistency(dataptr dz);
static int setup_brownian_application(dataptr dz);
static int parse_sloom_data(int argc,char *argv[],char ***cmdline,int *cmdlinecnt,dataptr dz);
static int parse_infile_and_check_type(char **cmdline,dataptr dz);
static int setup_brownian_param_ranges_and_defaults(dataptr dz);
static int handle_the_outfile(int *cmdlinecnt,char ***cmdline,dataptr dz);
static int open_the_outfile(dataptr dz);
static int setup_and_init_input_param_activity(dataptr dz,int tipc);
static int setup_input_param_defaultval_stores(int tipc,aplptr ap);
static int establish_application(dataptr dz);
static int initialise_vflags(dataptr dz);
static int setup_parameter_storage_and_constants(int storage_cnt,dataptr dz);
static int initialise_is_int_and_no_brk_constants(int storage_cnt,dataptr dz);
static int mark_parameter_types(dataptr dz,aplptr ap);
static int assign_file_data_storage(int infilecnt,dataptr dz);
static int get_tk_cmdline_word(int *cmdlinecnt,char ***cmdline,char *q);
static int get_the_process_no(char *prog_identifier_from_cmdline,dataptr dz);
static int get_the_mode_from_cmdline(char *str,dataptr dz);
static int setup_and_init_input_brktable_constants(dataptr dz,int brkcnt);
static void pancalc(double position,double *leftgain,double *rightgain);
static int write_event_to_output(int passno,double current_time,double current_position,double *maxsamp,double normaliser,int *obufpos,dataptr dz);
static int write_event(double current_pitch,double current_gain,double tabincr,dataptr dz);
static int do_brownian(dataptr dz);
static int get_gain(double *current_gain,dataptr dz);
static int get_position(double *space_position,dataptr dz);
static double get_timestep(dataptr dz);
static int get_next_pitch(double *currentpitch,double thistime,dataptr dz);
static int create_brownian_buffers(dataptr dz);
static void time_display(int samps_sent,dataptr dz);

/**************************************** MAIN *********************************************/

int main(int argc,char *argv[])
{
	int exit_status;
	dataptr dz = NULL;
	char **cmdline;
	int  cmdlinecnt;
	aplptr ap;
	int is_launched = FALSE;
	if(argc==2 && (strcmp(argv[1],"--version") == 0)) {
		fprintf(stdout,"%s\n",cdp_version);
		fflush(stdout);
		return 0;
	}
						/* CHECK FOR SOUNDLOOM */
	if((sloom = sound_loom_in_use(&argc,&argv)) > 1) {
		sloom = 0;
		sloombatch = 1;
	}
	if(sflinit("cdp")){
		sfperror("cdp: initialisation\n");
		return(FAILED);
	}
						  /* SET UP THE PRINCIPLE DATASTRUCTURE */
	if((exit_status = establish_datastructure(&dz))<0) {					// CDP LIB
		print_messages_and_close_sndfiles(exit_status,is_launched,dz);
		return(FAILED);
	}
	if(!sloom) {
		if(argc == 1) {
			usage1();	
			return(FAILED);
		} else if(argc == 2) {
			usage2(argv[1]);	
			return(FAILED);
		}
	}
	if(!sloom) {
		if((exit_status = make_initial_cmdline_check(&argc,&argv))<0) {		// CDP LIB
			print_messages_and_close_sndfiles(exit_status,is_launched,dz);
			return(FAILED);
		}
		cmdline    = argv;
		cmdlinecnt = argc;
		if((get_the_process_no(argv[0],dz))<0)
			return(FAILED);
		cmdline++;
		cmdlinecnt--;
		dz->maxmode = 2;
		if((exit_status = get_the_mode_from_cmdline(cmdline[0],dz))<0) {
			print_messages_and_close_sndfiles(exit_status,is_launched,dz);
			return(exit_status);
		}
		cmdline++;
		cmdlinecnt--;
		// setup_particular_application =
		if((exit_status = setup_brownian_application(dz))<0) {
			print_messages_and_close_sndfiles(exit_status,is_launched,dz);
			return(FAILED);
		}
		if((exit_status = count_and_allocate_for_infiles(cmdlinecnt,cmdline,dz))<0) {		// CDP LIB
			print_messages_and_close_sndfiles(exit_status,is_launched,dz);
			return(FAILED);
		}
	} else {
		//parse_TK_data() =
		if((exit_status = parse_sloom_data(argc,argv,&cmdline,&cmdlinecnt,dz))<0) {
			exit_status = print_messages_and_close_sndfiles(exit_status,is_launched,dz);
			return(exit_status);		 
		}
	}
	ap = dz->application;

	// parse_infile_and_hone_type() = 
	if((exit_status = parse_infile_and_check_type(cmdline,dz))<0) {
		exit_status = print_messages_and_close_sndfiles(exit_status,is_launched,dz);
		return(FAILED);
	}
	// setup_param_ranges_and_defaults() =
	if((exit_status = setup_brownian_param_ranges_and_defaults(dz))<0) {
		exit_status = print_messages_and_close_sndfiles(exit_status,is_launched,dz);
		return(FAILED);
	}
	// open_first_infile		CDP LIB
	if((exit_status = open_first_infile(cmdline[0],dz))<0) {	
		print_messages_and_close_sndfiles(exit_status,is_launched,dz);	
		return(FAILED);
	}
	cmdlinecnt--;
	cmdline++;

//	handle_extra_infiles() : redundant
	// handle_outfile() = 
	if((exit_status = handle_the_outfile(&cmdlinecnt,&cmdline,dz))<0) {
		print_messages_and_close_sndfiles(exit_status,is_launched,dz);
		return(FAILED);
	}

//	handle_formants()			redundant
//	handle_formant_quiksearch()	redundant
//	handle_special_data()		redundant
	if((exit_status = read_parameters_and_flags(&cmdline,&cmdlinecnt,dz))<0) {		// CDP LIB
		print_messages_and_close_sndfiles(exit_status,is_launched,dz);
		return(FAILED);
	}
//	check_param_validity_and_consistency....
	if((exit_status = check_brownian_param_validity_and_consistency(dz))<0) {
		print_messages_and_close_sndfiles(exit_status,is_launched,dz);
		return(FAILED);
	}
	if((exit_status = open_the_outfile(dz))<0) {
		print_messages_and_close_sndfiles(exit_status,is_launched,dz);
		return(FAILED);
	}
	is_launched = TRUE;
	if((exit_status = create_brownian_buffers(dz))<0) {
		print_messages_and_close_sndfiles(exit_status,is_launched,dz);
		return(FAILED);
	}
	//param_preprocess()	redundant
	//process_file =
	if((exit_status = do_brownian(dz))<0) {
		print_messages_and_close_sndfiles(exit_status,is_launched,dz);
		return(FAILED);
	}
	if((exit_status = complete_output(dz))<0) {										// CDP LIB
		print_messages_and_close_sndfiles(exit_status,is_launched,dz);
		return(FAILED);
	}
	exit_status = print_messages_and_close_sndfiles(FINISHED,is_launched,dz);		// CDP LIB
	free(dz);
	return(SUCCEEDED);
}

/**********************************************
		REPLACED CDP LIB FUNCTIONS
**********************************************/


/****************************** SET_PARAM_DATA *********************************/

int set_param_data(aplptr ap, int special_data,int maxparamcnt,int paramcnt,char *paramlist)
{
	ap->special_data   = (char)special_data;	   
	ap->param_cnt      = (char)paramcnt;
	ap->max_param_cnt  = (char)maxparamcnt;
	if(ap->max_param_cnt>0) {
		if((ap->param_list = (char *)malloc((size_t)(ap->max_param_cnt+1)))==NULL) {	
			sprintf(errstr,"INSUFFICIENT MEMORY: for param_list\n");
			return(MEMORY_ERROR);
		}
		strcpy(ap->param_list,paramlist); 
	}
	return(FINISHED);
}

/****************************** SET_VFLGS *********************************/

int set_vflgs
(aplptr ap,char *optflags,int optcnt,char *optlist,char *varflags,int vflagcnt, int vparamcnt,char *varlist)
{
	ap->option_cnt 	 = (char) optcnt;			/*RWD added cast */
	if(optcnt) {
		if((ap->option_list = (char *)malloc((size_t)(optcnt+1)))==NULL) {
			sprintf(errstr,"INSUFFICIENT MEMORY: for option_list\n");
			return(MEMORY_ERROR);
		}
		strcpy(ap->option_list,optlist);
		if((ap->option_flags = (char *)malloc((size_t)(optcnt+1)))==NULL) {
			sprintf(errstr,"INSUFFICIENT MEMORY: for option_flags\n");
			return(MEMORY_ERROR);
		}
		strcpy(ap->option_flags,optflags); 
	}
	ap->vflag_cnt = (char) vflagcnt;		   
	ap->variant_param_cnt = (char) vparamcnt;
	if(vflagcnt) {
		if((ap->variant_list  = (char *)malloc((size_t)(vflagcnt+1)))==NULL) {
			sprintf(errstr,"INSUFFICIENT MEMORY: for variant_list\n");
			return(MEMORY_ERROR);
		}
		strcpy(ap->variant_list,varlist);		
		if((ap->variant_flags = (char *)malloc((size_t)(vflagcnt+1)))==NULL) {
			sprintf(errstr,"INSUFFICIENT MEMORY: for variant_flags\n");
			return(MEMORY_ERROR);
		}
		strcpy(ap->variant_flags,varflags);

	}
	return(FINISHED);
}

/***************************** APPLICATION_INIT **************************/

int application_init(dataptr dz)
{
	int exit_status;
	int storage_cnt;
	int tipc, brkcnt;
	aplptr ap = dz->application;
	if(ap->vflag_cnt>0)
		initialise_vflags(dz);	  
	tipc  = ap->max_param_cnt + ap->option_cnt + ap->variant_param_cnt;
	ap->total_input_param_cnt = (char)tipc;
	if(tipc>0) {
		if((exit_status = setup_input_param_range_stores(tipc,ap))<0)			  
			return(exit_status);
		if((exit_status = setup_input_param_defaultval_stores(tipc,ap))<0)		  
			return(exit_status);
		if((exit_status = setup_and_init_input_param_activity(dz,tipc))<0)	  
			return(exit_status);
	}
	brkcnt = tipc;
	//THERE ARE NO INPUTFILE brktables USED IN THIS PROCESS
	if(brkcnt>0) {
		if((exit_status = setup_and_init_input_brktable_constants(dz,brkcnt))<0)			  
			return(exit_status);
	}
	if((storage_cnt = tipc + ap->internal_param_cnt)>0) {		  
		if((exit_status = setup_parameter_storage_and_constants(storage_cnt,dz))<0)	  
			return(exit_status);
		if((exit_status = initialise_is_int_and_no_brk_constants(storage_cnt,dz))<0)	  
			return(exit_status);
	}													   
 	if((exit_status = mark_parameter_types(dz,ap))<0)	  
		return(exit_status);
	
	// establish_infile_constants() replaced by
	dz->infilecnt = 1;
	//establish_bufptrs_and_extra_buffers():
	return(FINISHED);
}

/********************** SETUP_PARAMETER_STORAGE_AND_CONSTANTS ********************/
/* RWD mallo changed to calloc; helps debug verison run as release! */

int setup_parameter_storage_and_constants(int storage_cnt,dataptr dz)
{
	if((dz->param       = (double *)calloc(storage_cnt, sizeof(double)))==NULL) {
		sprintf(errstr,"setup_parameter_storage_and_constants(): 1\n");
		return(MEMORY_ERROR);
	}
	if((dz->iparam      = (int    *)calloc(storage_cnt, sizeof(int)   ))==NULL) {
		sprintf(errstr,"setup_parameter_storage_and_constants(): 2\n");
		return(MEMORY_ERROR);
	}
	if((dz->is_int      = (char   *)calloc(storage_cnt, sizeof(char)))==NULL) {
		sprintf(errstr,"setup_parameter_storage_and_constants(): 3\n");
		return(MEMORY_ERROR);
	}
	if((dz->no_brk      = (char   *)calloc(storage_cnt, sizeof(char)))==NULL) {
		sprintf(errstr,"setup_parameter_storage_and_constants(): 5\n");
		return(MEMORY_ERROR);
	}
	return(FINISHED);
}

/************** INITIALISE_IS_INT_AND_NO_BRK_CONSTANTS *****************/

int initialise_is_int_and_no_brk_constants(int storage_cnt,dataptr dz)
{
	int n;
	for(n=0;n<storage_cnt;n++) {
		dz->is_int[n] = (char)0;
		dz->no_brk[n] = (char)0;
	}
	return(FINISHED);
}

/***************************** MARK_PARAMETER_TYPES **************************/

int mark_parameter_types(dataptr dz,aplptr ap)
{
	int n, m;							/* PARAMS */
	for(n=0;n<ap->max_param_cnt;n++) {
		switch(ap->param_list[n]) {
		case('0'):	break; /* dz->is_active[n] = 0 is default */
		case('i'):	dz->is_active[n] = (char)1; dz->is_int[n] = (char)1;dz->no_brk[n] = (char)1; break;
		case('I'):	dz->is_active[n] = (char)1;	dz->is_int[n] = (char)1; 						 break;
		case('d'):	dz->is_active[n] = (char)1;							dz->no_brk[n] = (char)1; break;
		case('D'):	dz->is_active[n] = (char)1;	/* normal case: double val or brkpnt file */	 break;
		default:
			sprintf(errstr,"Programming error: invalid parameter type in mark_parameter_types()\n");
			return(PROGRAM_ERROR);
		}
	}						 		/* OPTIONS */
	for(n=0,m=ap->max_param_cnt;n<ap->option_cnt;n++,m++) {
		switch(ap->option_list[n]) {
		case('i'): dz->is_active[m] = (char)1; dz->is_int[m] = (char)1;	dz->no_brk[m] = (char)1; break;
		case('I'): dz->is_active[m] = (char)1; dz->is_int[m] = (char)1; 						 break;
		case('d'): dz->is_active[m] = (char)1; 							dz->no_brk[m] = (char)1; break;
		case('D'): dz->is_active[m] = (char)1;	/* normal case: double val or brkpnt file */	 break;
		default:
			sprintf(errstr,"Programming error: invalid option type in mark_parameter_types()\n");
			return(PROGRAM_ERROR);
		}
	}								/* VARIANTS */
	for(n=0,m=ap->max_param_cnt + ap->option_cnt;n < ap->variant_param_cnt; n++, m++) {
		switch(ap->variant_list[n]) {
		case('0'): break;
		case('i'): dz->is_active[m] = (char)1; dz->is_int[m] = (char)1;	dz->no_brk[m] = (char)1; break;
		case('I'): dz->is_active[m] = (char)1; dz->is_int[m] = (char)1;	 						 break;
		case('d'): dz->is_active[m] = (char)1; 							dz->no_brk[m] = (char)1; break;
		case('D'): dz->is_active[m] = (char)1; /* normal case: double val or brkpnt file */		 break;
		default:
			sprintf(errstr,"Programming error: invalid variant type in mark_parameter_types()\n");
			return(PROGRAM_ERROR);
		}
	}								/* INTERNAL */
	for(n=0,
	m=ap->max_param_cnt + ap->option_cnt + ap->variant_param_cnt; n<ap->internal_param_cnt; n++,m++) {
		switch(ap->internal_param_list[n]) {
		case('0'):  break;	 /* dummy variables: variables not used: but important for internal paream numbering!! */
		case('i'):	dz->is_int[m] = (char)1;	dz->no_brk[m] = (char)1;	break;
		case('d'):								dz->no_brk[m] = (char)1;	break;
		default:
			sprintf(errstr,"Programming error: invalid internal param type in mark_parameter_types()\n");
			return(PROGRAM_ERROR);
		}
	}
	return(FINISHED);
}

/************************ HANDLE_THE_OUTFILE *********************/

int handle_the_outfile(int *cmdlinecnt,char ***cmdline,dataptr dz)
{
	int has_extension = 0;
	char *filename = (*cmdline)[0], *p;
	if(filename[0]=='-' && filename[1]=='f') {
		dz->floatsam_output = 1;
		dz->true_outfile_stype = SAMP_FLOAT;
		filename+= 2;
	}
	if(!sloom) {
		if(file_has_invalid_startchar(filename) || value_is_numeric(filename)) {
			sprintf(errstr,"Outfile name %s has invalid start character(s) or looks too much like a number.\n",filename);
			return(DATA_ERROR);
		}
	}
	p = filename + strlen(filename);
	p--;
	while(p != filename) {
		if(*p == '.') {
			has_extension = 1;
			break;
		}
		p--;
	}
	strcpy(dz->outfilename,filename);
	if(!has_extension)
		strcat(dz->outfilename,".wav");
	(*cmdline)++;
	(*cmdlinecnt)--;
	return(FINISHED);
}

/************************ OPEN_THE_OUTFILE *********************/

int open_the_outfile(dataptr dz)
{
	int exit_status;
	dz->infile->channels = dz->iparam[BRCHANS];
	if((exit_status = create_sized_outfile(dz->outfilename,dz))<0)
		return(exit_status);
	return(FINISHED);
}

/***************************** ESTABLISH_APPLICATION **************************/

int establish_application(dataptr dz)
{
	aplptr ap;
	if((dz->application = (aplptr)malloc(sizeof (struct applic)))==NULL) {
		sprintf(errstr,"establish_application()\n");
		return(MEMORY_ERROR);
	}
	ap = dz->application;
	memset((char *)ap,0,sizeof(struct applic));
	return(FINISHED);
}

/************************* INITIALISE_VFLAGS *************************/

int initialise_vflags(dataptr dz)
{
	int n;
	if((dz->vflag  = (char *)malloc(dz->application->vflag_cnt * sizeof(char)))==NULL) {
		sprintf(errstr,"INSUFFICIENT MEMORY: vflag store,\n");
		return(MEMORY_ERROR);
	}
	for(n=0;n<dz->application->vflag_cnt;n++)
		dz->vflag[n]  = FALSE;
	return FINISHED;
}

/************************* SETUP_INPUT_PARAM_DEFAULTVALS *************************/

int setup_input_param_defaultval_stores(int tipc,aplptr ap)
{
	int n;
	if((ap->default_val = (double *)malloc(tipc * sizeof(double)))==NULL) {
		sprintf(errstr,"INSUFFICIENT MEMORY for application default values store\n");
		return(MEMORY_ERROR);
	}
	for(n=0;n<tipc;n++)
		ap->default_val[n] = 0.0;
	return(FINISHED);
}

/***************************** SETUP_AND_INIT_INPUT_PARAM_ACTIVITY **************************/

int setup_and_init_input_param_activity(dataptr dz,int tipc)
{
	int n;
	if((dz->is_active = (char   *)malloc((size_t)tipc))==NULL) {
		sprintf(errstr,"setup_and_init_input_param_activity()\n");
		return(MEMORY_ERROR);
	}
	for(n=0;n<tipc;n++)
		dz->is_active[n] = (char)0;
	return(FINISHED);
}

/************************* SETUP_BROWNIAN_APPLICATION *******************/

int setup_brownian_application(dataptr dz)
{
	int exit_status;
	aplptr ap;
	if((exit_status = establish_application(dz))<0)		// GLOBAL
		return(FAILED);
	ap = dz->application;
	// SEE parstruct FOR EXPLANATION of next 2 functions
	if(dz->mode == 0)
		exit_status = set_param_data(ap,0,12,12,"idDDDDddDDDi");
	else
		exit_status = set_param_data(ap,0,12,10,"id00DDddDDDi");
	if(exit_status < 0)
		return(FAILED);
	if(dz->mode == 0)
		exit_status = set_vflgs(ap,"amsd",4,"DDDD","l",1,0,"0");
	else
		exit_status = set_vflgs(ap,"am",2,"DD","l",1,0,"0");
	if(exit_status < 0)
		return(FAILED);
	// set_legal_infile_structure -->
	dz->has_otherfile = FALSE;
	// assign_process_logic -->
	dz->input_data_type = SNDFILES_ONLY;
	dz->process_type	= UNEQUAL_SNDFILE;	
	dz->outfiletype  	= SNDFILE_OUT;
	return application_init(dz);	//GLOBAL
}

/************************* PARSE_INFILE_AND_CHECK_TYPE *******************/

int parse_infile_and_check_type(char **cmdline,dataptr dz)
{
	int exit_status;
	infileptr infile_info;
	if(!sloom) {
		if((infile_info = (infileptr)malloc(sizeof(struct filedata)))==NULL) {
			sprintf(errstr,"INSUFFICIENT MEMORY for infile structure to test file data.");
			return(MEMORY_ERROR);
		} else if((exit_status = cdparse(cmdline[0],infile_info))<0) {
			sprintf(errstr,"Failed to parse input file %s\n",cmdline[0]);
			return(PROGRAM_ERROR);
		} else if(infile_info->filetype != SNDFILE)  {
			sprintf(errstr,"File %s is not of correct type\n",cmdline[0]);
			return(DATA_ERROR);
		} else if(infile_info->channels != 1)  {
			sprintf(errstr,"File %s is not of correct type (must be mono)\n",cmdline[0]);
			return(DATA_ERROR);
		} else if((exit_status = copy_parse_info_to_main_structure(infile_info,dz))<0) {
			sprintf(errstr,"Failed to copy file parsing information\n");
			return(PROGRAM_ERROR);
		}
		free(infile_info);
	}
	return(FINISHED);
}

/************************* SETUP_BROWNIAN_PARAM_RANGES_AND_DEFAULTS *******************/

int setup_brownian_param_ranges_and_defaults(dataptr dz)
{
	int exit_status;
	aplptr ap = dz->application;
	// set_param_ranges()
	ap->total_input_param_cnt = (char)(ap->max_param_cnt + ap->option_cnt + ap->variant_param_cnt);
	// NB total_input_param_cnt is > 0 !!!
	if((exit_status = setup_input_param_range_stores(ap->total_input_param_cnt,ap))<0)
		return(FAILED);
	// get_param_ranges()

	ap->lo[BRCHANS]	= 1;
	ap->hi[BRCHANS]	= 16;
	ap->default_val[BRCHANS] = 8;
	ap->lo[BRDUR] = dz->duration;
	ap->hi[BRDUR] = 7200;
	ap->default_val[BRDUR] = 20;
	if(dz->mode == 0) {
		ap->lo[BRATT] = .002;
		ap->hi[BRATT] = 8;
		ap->default_val[BRATT] = .02;
		ap->lo[BRDEC]	= .002;
		ap->hi[BRDEC]	= 8;
		ap->default_val[BRDEC] = .5;
	}
	ap->lo[BRPLO]	= 0;
	ap->hi[BRPLO]	= 127;
	ap->default_val[BRPLO] = 48;
	ap->lo[BRPHI]	= 0;
	ap->hi[BRPHI]	= 127;
	ap->default_val[BRPHI] = 72;
	ap->lo[BRPSTT]	= 0;
	ap->hi[BRPSTT]	= 127;
	ap->default_val[BRPSTT] = 60;
	ap->lo[BRSSTT]	= 1;
	ap->hi[BRSSTT]	= 16;
	ap->default_val[BRSSTT] = 1;
	ap->lo[BRPSTEP]	= 0.125;
	ap->hi[BRPSTEP]	= 24;
	ap->default_val[BRPSTEP] = .5;
	ap->lo[BRSSTEP]	= 0;
	ap->hi[BRSSTEP]	= 1;
	ap->default_val[BRSSTEP] = .0625;
	ap->lo[BRTICK]	= 0.002;
	ap->hi[BRTICK]	= 4;
	ap->default_val[BRTICK] = 0.04;
	ap->lo[BRSEED]	= 0;
	ap->hi[BRSEED]	= 255;
	ap->default_val[BRSEED] = 1;
	ap->lo[BRASTEP]	= 0;
	ap->hi[BRASTEP]	= 96;
	ap->default_val[BRASTEP] = 0;
	ap->lo[BRAMIN]	= 0;
	ap->hi[BRAMIN]	= 96;
	ap->default_val[BRAMIN] = 0;
	if(dz->mode == 0) {
		ap->lo[BRASLP]	= 0.1;
		ap->hi[BRASLP]	= 10;
		ap->default_val[BRASLP] = 1;
		ap->lo[BRDSLP]	= 0.1;
		ap->hi[BRDSLP]	= 10;
		ap->default_val[BRDSLP] = 1;
	}
	dz->maxmode = 2;
	if(!sloom)
		put_default_vals_in_all_params(dz);
	return(FINISHED);
}

/********************************* PARSE_SLOOM_DATA *********************************/

int parse_sloom_data(int argc,char *argv[],char ***cmdline,int *cmdlinecnt,dataptr dz)
{
	int exit_status;
	int cnt = 1, infilecnt;
	int filesize, insams, inbrksize;
	double dummy;
	int true_cnt = 0;
	aplptr ap;

	while(cnt<=PRE_CMDLINE_DATACNT) {
		if(cnt > argc) {
			sprintf(errstr,"Insufficient data sent from TK\n");
			return(DATA_ERROR);
		}
		switch(cnt) {
		case(1):	
			if(sscanf(argv[cnt],"%d",&dz->process)!=1) {
				sprintf(errstr,"Cannot read process no. sent from TK\n");
				return(DATA_ERROR);
			}
			break;

		case(2):	
			if(sscanf(argv[cnt],"%d",&dz->mode)!=1) {
				sprintf(errstr,"Cannot read mode no. sent from TK\n");
				return(DATA_ERROR);
			}
			if(dz->mode > 0)
				dz->mode--;
			//setup_particular_application() =
			if((exit_status = setup_brownian_application(dz))<0)
				return(exit_status);
			ap = dz->application;
			break;

		case(3):	
			if(sscanf(argv[cnt],"%d",&infilecnt)!=1) {
				sprintf(errstr,"Cannot read infilecnt sent from TK\n");
				return(DATA_ERROR);
			}
			if(infilecnt < 1) {
				true_cnt = cnt + 1;
				cnt = PRE_CMDLINE_DATACNT;	/* force exit from loop after assign_file_data_storage */
			}
			if((exit_status = assign_file_data_storage(infilecnt,dz))<0)
				return(exit_status);
			break;
		case(INPUT_FILETYPE+4):	
			if(sscanf(argv[cnt],"%d",&dz->infile->filetype)!=1) {
				sprintf(errstr,"Cannot read filetype sent from TK (%s)\n",argv[cnt]);
				return(DATA_ERROR);
			}
			break;
		case(INPUT_FILESIZE+4):	
			if(sscanf(argv[cnt],"%d",&filesize)!=1) {
				sprintf(errstr,"Cannot read infilesize sent from TK\n");
				return(DATA_ERROR);
			}
			dz->insams[0] = filesize;	
			break;
		case(INPUT_INSAMS+4):	
			if(sscanf(argv[cnt],"%d",&insams)!=1) {
				sprintf(errstr,"Cannot read insams sent from TK\n");
				return(DATA_ERROR);
			}
			dz->insams[0] = insams;	
			break;
		case(INPUT_SRATE+4):	
			if(sscanf(argv[cnt],"%d",&dz->infile->srate)!=1) {
				sprintf(errstr,"Cannot read srate sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_CHANNELS+4):	
			if(sscanf(argv[cnt],"%d",&dz->infile->channels)!=1) {
				sprintf(errstr,"Cannot read channels sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_STYPE+4):	
			if(sscanf(argv[cnt],"%d",&dz->infile->stype)!=1) {
				sprintf(errstr,"Cannot read stype sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_ORIGSTYPE+4):	
			if(sscanf(argv[cnt],"%d",&dz->infile->origstype)!=1) {
				sprintf(errstr,"Cannot read origstype sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_ORIGRATE+4):	
			if(sscanf(argv[cnt],"%d",&dz->infile->origrate)!=1) {
				sprintf(errstr,"Cannot read origrate sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_MLEN+4):	
			if(sscanf(argv[cnt],"%d",&dz->infile->Mlen)!=1) {
				sprintf(errstr,"Cannot read Mlen sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_DFAC+4):	
			if(sscanf(argv[cnt],"%d",&dz->infile->Dfac)!=1) {
				sprintf(errstr,"Cannot read Dfac sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_ORIGCHANS+4):	
			if(sscanf(argv[cnt],"%d",&dz->infile->origchans)!=1) {
				sprintf(errstr,"Cannot read origchans sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_SPECENVCNT+4):	
			if(sscanf(argv[cnt],"%d",&dz->infile->specenvcnt)!=1) {
				sprintf(errstr,"Cannot read specenvcnt sent from TK\n");
				return(DATA_ERROR);
			}
			dz->specenvcnt = dz->infile->specenvcnt;
			break;
		case(INPUT_WANTED+4):	
			if(sscanf(argv[cnt],"%d",&dz->wanted)!=1) {
				sprintf(errstr,"Cannot read wanted sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_WLENGTH+4):	
			if(sscanf(argv[cnt],"%d",&dz->wlength)!=1) {
				sprintf(errstr,"Cannot read wlength sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_OUT_CHANS+4):	
			if(sscanf(argv[cnt],"%d",&dz->out_chans)!=1) {
				sprintf(errstr,"Cannot read out_chans sent from TK\n");
				return(DATA_ERROR);
			}
			break;
			/* RWD these chanegs to samps - tk will have to deal with that! */
		case(INPUT_DESCRIPTOR_BYTES+4):	
			if(sscanf(argv[cnt],"%d",&dz->descriptor_samps)!=1) {
				sprintf(errstr,"Cannot read descriptor_samps sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_IS_TRANSPOS+4):	
			if(sscanf(argv[cnt],"%d",&dz->is_transpos)!=1) {
				sprintf(errstr,"Cannot read is_transpos sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_COULD_BE_TRANSPOS+4):	
			if(sscanf(argv[cnt],"%d",&dz->could_be_transpos)!=1) {
				sprintf(errstr,"Cannot read could_be_transpos sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_COULD_BE_PITCH+4):	
			if(sscanf(argv[cnt],"%d",&dz->could_be_pitch)!=1) {
				sprintf(errstr,"Cannot read could_be_pitch sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_DIFFERENT_SRATES+4):	
			if(sscanf(argv[cnt],"%d",&dz->different_srates)!=1) {
				sprintf(errstr,"Cannot read different_srates sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_DUPLICATE_SNDS+4):	
			if(sscanf(argv[cnt],"%d",&dz->duplicate_snds)!=1) {
				sprintf(errstr,"Cannot read duplicate_snds sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_BRKSIZE+4):	
			if(sscanf(argv[cnt],"%d",&inbrksize)!=1) {
				sprintf(errstr,"Cannot read brksize sent from TK\n");
				return(DATA_ERROR);
			}
			if(inbrksize > 0) {
				switch(dz->input_data_type) {
				case(WORDLIST_ONLY):
					break;
				case(PITCH_AND_PITCH):
				case(PITCH_AND_TRANSPOS):
				case(TRANSPOS_AND_TRANSPOS):
					dz->tempsize = inbrksize;
					break;
				case(BRKFILES_ONLY):
				case(UNRANGED_BRKFILE_ONLY):
				case(DB_BRKFILES_ONLY):
				case(ALL_FILES):
				case(ANY_NUMBER_OF_ANY_FILES):
					if(dz->extrabrkno < 0) {
						sprintf(errstr,"Storage location number for brktable not established by CDP.\n");
						return(DATA_ERROR);
					}
					if(dz->brksize == NULL) {
						sprintf(errstr,"CDP has not established storage space for input brktable.\n");
						return(PROGRAM_ERROR);
					}
					dz->brksize[dz->extrabrkno]	= inbrksize;
					break;
				default:
					sprintf(errstr,"TK sent brktablesize > 0 for input_data_type [%d] not using brktables.\n",
					dz->input_data_type);
					return(PROGRAM_ERROR);
				}
				break;
			}
			break;
		case(INPUT_NUMSIZE+4):	
			if(sscanf(argv[cnt],"%d",&dz->numsize)!=1) {
				sprintf(errstr,"Cannot read numsize sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_LINECNT+4):	
			if(sscanf(argv[cnt],"%d",&dz->linecnt)!=1) {
				sprintf(errstr,"Cannot read linecnt sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_ALL_WORDS+4):	
			if(sscanf(argv[cnt],"%d",&dz->all_words)!=1) {
				sprintf(errstr,"Cannot read all_words sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_ARATE+4):	
			if(sscanf(argv[cnt],"%f",&dz->infile->arate)!=1) {
				sprintf(errstr,"Cannot read arate sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_FRAMETIME+4):	
			if(sscanf(argv[cnt],"%lf",&dummy)!=1) {
				sprintf(errstr,"Cannot read frametime sent from TK\n");
				return(DATA_ERROR);
			}
			dz->frametime = (float)dummy;
			break;
		case(INPUT_WINDOW_SIZE+4):	
			if(sscanf(argv[cnt],"%f",&dz->infile->window_size)!=1) {
				sprintf(errstr,"Cannot read window_size sent from TK\n");
					return(DATA_ERROR);
			}
			break;
		case(INPUT_NYQUIST+4):	
			if(sscanf(argv[cnt],"%lf",&dz->nyquist)!=1) {
				sprintf(errstr,"Cannot read nyquist sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_DURATION+4):	
			if(sscanf(argv[cnt],"%lf",&dz->duration)!=1) {
				sprintf(errstr,"Cannot read duration sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_MINBRK+4):	
			if(sscanf(argv[cnt],"%lf",&dz->minbrk)!=1) {
				sprintf(errstr,"Cannot read minbrk sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_MAXBRK+4):	
			if(sscanf(argv[cnt],"%lf",&dz->maxbrk)!=1) {
				sprintf(errstr,"Cannot read maxbrk sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_MINNUM+4):	
			if(sscanf(argv[cnt],"%lf",&dz->minnum)!=1) {
				sprintf(errstr,"Cannot read minnum sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		case(INPUT_MAXNUM+4):	
			if(sscanf(argv[cnt],"%lf",&dz->maxnum)!=1) {
				sprintf(errstr,"Cannot read maxnum sent from TK\n");
				return(DATA_ERROR);
			}
			break;
		default:
			sprintf(errstr,"case switch item missing: parse_sloom_data()\n");
			return(PROGRAM_ERROR);
		}
		cnt++;
	}
	if(cnt!=PRE_CMDLINE_DATACNT+1) {
		sprintf(errstr,"Insufficient pre-cmdline params sent from TK\n");
		return(DATA_ERROR);
	}

	if(true_cnt)
		cnt = true_cnt;
	*cmdlinecnt = 0;		

	while(cnt < argc) {
		if((exit_status = get_tk_cmdline_word(cmdlinecnt,cmdline,argv[cnt]))<0)
			return(exit_status);
		cnt++;
	}
	return(FINISHED);
}

/********************************* GET_TK_CMDLINE_WORD *********************************/

int get_tk_cmdline_word(int *cmdlinecnt,char ***cmdline,char *q)
{
	if(*cmdlinecnt==0) {
		if((*cmdline = (char **)malloc(sizeof(char *)))==NULL)	{
			sprintf(errstr,"INSUFFICIENT MEMORY for TK cmdline array.\n");
			return(MEMORY_ERROR);
		}
	} else {
		if((*cmdline = (char **)realloc(*cmdline,((*cmdlinecnt)+1) * sizeof(char *)))==NULL)	{
			sprintf(errstr,"INSUFFICIENT MEMORY for TK cmdline array.\n");
			return(MEMORY_ERROR);
		}
	}
	if(((*cmdline)[*cmdlinecnt] = (char *)malloc((strlen(q) + 1) * sizeof(char)))==NULL)	{
		sprintf(errstr,"INSUFFICIENT MEMORY for TK cmdline item %d.\n",(*cmdlinecnt)+1);
		return(MEMORY_ERROR);
	}
	strcpy((*cmdline)[*cmdlinecnt],q);
	(*cmdlinecnt)++;
	return(FINISHED);
}


/****************************** ASSIGN_FILE_DATA_STORAGE *********************************/

int assign_file_data_storage(int infilecnt,dataptr dz)
{
	int exit_status;
	int no_sndfile_system_files = FALSE;
	dz->infilecnt = infilecnt;
	if((exit_status = allocate_filespace(dz))<0)
		return(exit_status);
	if(no_sndfile_system_files)
		dz->infilecnt = 0;
	return(FINISHED);
}



/************************* redundant functions: to ensure libs compile OK *******************/

int assign_process_logic(dataptr dz)
{
	return(FINISHED);
}

void set_legal_infile_structure(dataptr dz)
{}

int set_legal_internalparam_structure(int process,int mode,aplptr ap)
{
	return(FINISHED);
}

int setup_internal_arrays_and_array_pointers(dataptr dz)
{
	return(FINISHED);
}

int establish_bufptrs_and_extra_buffers(dataptr dz)
{
	return(FINISHED);
}

int read_special_data(char *str,dataptr dz)	
{
	return(FINISHED);
}

int inner_loop
(int *peakscore,int *descnt,int *in_start_portion,int *least,int *pitchcnt,int windows_in_buf,dataptr dz)
{
	return(FINISHED);
}

int get_process_no(char *prog_identifier_from_cmdline,dataptr dz)
{
	return(FINISHED);
}


/******************************** USAGE1 ********************************/

int usage1()
{
	usage2("motion");
	return(USAGE_ONLY);
}

/**************************** CHECK_BROWNIAN_PARAM_VALIDITY_AND_CONSISTENCY *****************************/

int check_brownian_param_validity_and_consistency(dataptr dz)
{
	int exit_status, check = 0, error = 0;
	int n, m;

	//	Check that initial pitch is within specified range

	if(dz->brksize[BRPHI])
		dz->param[BRPHI] = dz->brk[BRPHI][1];
	if(dz->brksize[BRPLO])
		dz->param[BRPLO] = dz->brk[BRPLO][1];
	if(dz->param[BRPSTT] > dz->param[BRPHI] || dz->param[BRPSTT] < dz->param[BRPLO]) {
		sprintf(errstr,"START PITCH LIES OUTSIDE PITCH RANGE SPECIFIED (AT PROCESS START)");
		return DATA_ERROR;
	}

	//	Check that (maximum) pitch lies (everwhere) within specified pitch-range

	check = 0;
	error = 0;
	if(dz->brksize[BRPHI]) {
		if(dz->brksize[BRPLO])
			check = 3;		//	Check with both phi and plo 
		else
			check = 1;		//	Check with phi variable 
	} else if(dz->brksize[BRPLO] && !dz->brksize[BRPHI])
		check = 2;			//	Check with plo variable 

	if(dz->brksize[BRPSTEP]) {
		if((exit_status = get_maxvalue_in_brktable(&(dz->param[BRPSTEP]),BRPSTEP,dz))<0)
			return exit_status;
	}
	switch(check) {
	case(0):
		if(dz->param[BRPHI] + dz->param[BRPLO] <= dz->param[BRPSTEP])
			error = 1;
		break;
	case(1):
		for(n=0,m=0;n < dz->brksize[BRPHI];n++,m+=2) {
			if(dz->brk[BRPHI][m+1] + dz->param[BRPLO] <= dz->param[BRPSTEP]) {
				error = 1;
				break;
			}
		}
		break;
	case(2):
		for(n=0,m=0;n < dz->brksize[BRPLO];n++,m+=2) {
			if(dz->param[BRPHI] + dz->brk[BRPLO][m+1] <= dz->param[BRPSTEP]) {
				error = 1;
				break;
			}
		}
		break;
	case(3):
		for(n=0,m=0;n < dz->brksize[BRPHI];n++,m+=2) {
			if((exit_status = read_value_from_brktable(dz->brk[BRPHI][m],BRPLO,dz))<0)
				return(exit_status);
			if(dz->brk[BRPHI][m+1] + dz->param[BRPLO] < dz->param[BRPSTEP]) {
				error = 1;
				break;
			}
		}
		if(!error) {
			for(n=0,m=0;n < dz->brksize[BRPLO];n++,m+=2) {
				if((exit_status = read_value_from_brktable(dz->brk[BRPLO][m],BRPHI,dz))<0)
					return(exit_status);
				if(dz->param[BRPHI] + dz->brk[BRPLO][m+1] < dz->param[BRPSTEP]) {
					error = 1;
					break;
				}
			}
		}
		break;

	}
	if(error) {
		if(dz->brksize[BRPSTEP]) {
			fprintf(stdout,"WARNING: PITCH-STEP MAY BE TOO LARGE FOR MINIMUM PITCHRANGE ENCOUNTERED.\n");
			fflush(stdout);
		} else {
			sprintf(errstr,"PITCH-STEP TOO LARGE FOR MINIMUM PITCHRANGE SPECIFIED.\n");
			return DATA_ERROR;
		}
	}
	if(dz->iparam[BRCHANS] == 1) {
		if(!flteq(dz->param[BRSSTT],1.0)) {
			fprintf(stdout,"WARNING: Start position (%.2lf) ignored for mono output.\n",dz->param[BRSSTT]);
			fflush(stdout);
		}
		if(!flteq(dz->param[BRSSTEP],0.0)) {
			fprintf(stdout,"WARNING: Spatial step (%.2lf) ignored for mono output.\n",dz->param[BRSSTEP]);
			fflush(stdout);
		}
		dz->param[BRSSTT] = 1.0;
	}
	dz->param[BRSSTT] -= 1.0;		//	change initial output-position from range 1toN to range 0toN-1

	if(!dz->vflag[0] && (dz->iparam[BRCHANS] < 3)) {
		fprintf(stdout,"WARNING: Output array must be LINEAR if output-channel count IS LESS THAN 3.\n");
		fflush(stdout);
		dz->vflag[0] = 1;
	}
	if(dz->vflag[0]) {
		if(dz->param[BRSSTT] > dz->iparam[BRCHANS] - 1) {
			sprintf(errstr,"INITIAL POSITION NOT WITHIN THE RANGE OF OUTPUT CHANNELS SPECIFIED, FOR A LINEAR ARRAY.\n");
			return DATA_ERROR;
		}
	} else {
		if(dz->param[BRSSTT] > dz->iparam[BRCHANS]) {
			sprintf(errstr,"INITIAL POSITION NOT WITHIN THE RANGE OF OUTPUT CHANNELS SPECIFIED.\n");
			return DATA_ERROR;
		}
	}
	if(dz->param[BRASTEP] <= 0.0 && dz->param[BRAMIN] > 0.0) {
		dz->param[BRAMIN] = 0.0;
		fprintf(stdout,"WARNING: No amplitude step: amplitude minimum has no effect.\n");
		fflush(stdout);
	}
	return FINISHED;
}

/********************************************************************************************/

int get_the_process_no(char *prog_identifier_from_cmdline,dataptr dz)
{
	if(!strcmp(prog_identifier_from_cmdline,"motion"))				dz->process = BROWNIAN;
	else {
		sprintf(errstr,"Unknown program identification string '%s'\n",prog_identifier_from_cmdline);
		return(USAGE_ONLY);
	}
	return(FINISHED);
}

/******************************** SETUP_AND_INIT_INPUT_BRKTABLE_CONSTANTS ********************************/

int setup_and_init_input_brktable_constants(dataptr dz,int brkcnt)
{	
	int n;
	if((dz->brk      = (double **)malloc(brkcnt * sizeof(double *)))==NULL) {
		sprintf(errstr,"setup_and_init_input_brktable_constants(): 1\n");
		return(MEMORY_ERROR);
	}
	if((dz->brkptr   = (double **)malloc(brkcnt * sizeof(double *)))==NULL) {
		sprintf(errstr,"setup_and_init_input_brktable_constants(): 6\n");
		return(MEMORY_ERROR);
	}
	if((dz->brksize  = (int    *)malloc(brkcnt * sizeof(int)))==NULL) {
		sprintf(errstr,"setup_and_init_input_brktable_constants(): 2\n");
		return(MEMORY_ERROR);
	}
	if((dz->firstval = (double  *)malloc(brkcnt * sizeof(double)))==NULL) {
		sprintf(errstr,"setup_and_init_input_brktable_constants(): 3\n");
		return(MEMORY_ERROR);												  
	}
	if((dz->lastind  = (double  *)malloc(brkcnt * sizeof(double)))==NULL) {
		sprintf(errstr,"setup_and_init_input_brktable_constants(): 4\n");
		return(MEMORY_ERROR);
	}
	if((dz->lastval  = (double  *)malloc(brkcnt * sizeof(double)))==NULL) {
		sprintf(errstr,"setup_and_init_input_brktable_constants(): 5\n");
		return(MEMORY_ERROR);
	}
	if((dz->brkinit  = (int     *)malloc(brkcnt * sizeof(int)))==NULL) {
		sprintf(errstr,"setup_and_init_input_brktable_constants(): 7\n");
		return(MEMORY_ERROR);
	}
	for(n=0;n<brkcnt;n++) {
		dz->brk[n]     = NULL;
		dz->brkptr[n]  = NULL;
		dz->brkinit[n] = 0;
		dz->brksize[n] = 0;
	}
	return(FINISHED);
}

/******************************** USAGE2 ********************************/

int usage2(char *str)
{
	if(!strcmp(str,"motion")) {
		fprintf(stderr,
	    "USAGE:\n"
	    "brownian motion 1 fi fo chans dur att dec plo phi pstart sstart step sstep tick seed\n"
		"[-aarange] [-mminamp] [-saslope] [-ddslope] [-l]\n"
		"OR\n"
	    "brownian motion 2 fi fo chans dur plo phi pstart sstart step sstep tick seed\n"
		"[-aarange] [-mminamp] [-l]\n"
		"\n"
		"Generate texture of sampled elements following brownian motion in pitch and space.\n"
		"\n"
	    "FI      (Mono) Source to be read at different speeds to generate output events.\n"
		"        MODE 1: src must start & end at sampval 0.0 : sampled as a waveform.\n"
		"        MODE 2: src can be anything, whole src is transposed for output events..\n"
		"                (In mode 2, very int source may take very long time to finish).\n"
	    "FO      Output file.\n"
		"CHANS   Number of channels in output file.\n" 
		"DUR     (Max) duration of output file.\n" 
		"ATT*    Rise time of events (Mode 1 only).\n"
		"DEC*    Decay time of events (Mode 1 only).\n"
		"PLO*    Bottom of pitch range (MIDI).\n"
		"PHI*    Top of pitch range (MIDI).\n"
		"PSTART  Initial pitch (MIDI).\n"
		"SSTART  Initial spatial position (numbering chans 1 - N) (ignored if mono output).\n"
		"STEP*   Maximum pitch step between events.\n"
		"SSTEP*  Max spatial step between events (fraction of distance between channels).\n"
		"TICK*   (Average) Time between events.\n"
		"SEED    Seed (initialises random vals. Gives reproducible random sequence).\n"
		"ARANGE* Max loudness step between events, in dB (default = min = 0: max = 96dB).\n"
		"MINAMP* Min loudness (Range  >0 to 96dB). default = 0 = NO minimum.\n"
		"        (Only comes into play if \"ARANGE\" is > 0).\n"
		"        (If min > 0: if amp falls to -min dB, levels 'bounce' off the min value).\n"
		"        (If min = 0: no min set, & if level falls to -96dB, sounds stream halts).\n"
		"(Mode 1 only)\n"
		"ASLOPE* attack slope: < 1 rise fast then slows  : > 1 rise slow then faster.\n"
		"DSLOPE* decay slope:  < 1 fall slow then faster : > 1 fall fast then slows.\n"
		"        Slope ranges are 0.1 to 10.\n"
		"\n"
		"-l      loudspeakers arrayed in a line. (Default: arrayed in a \"circle\").\n"
		"\n"
		"All items marked with \"*\" can vary though time.\n");
	} else
		fprintf(stdout,"Unknown option '%s'\n",str);
	return(USAGE_ONLY);
}

int usage3(char *str1,char *str2)
{
	fprintf(stderr,"Insufficient parameters on command line.\n");
	return(USAGE_ONLY);
}

/****************************** GET_MODE *********************************/

int get_the_mode_from_cmdline(char *str,dataptr dz)
{
	char temp[200], *p;
	if(sscanf(str,"%s",temp)!=1) {
		sprintf(errstr,"Cannot read mode of program.\n");
		return(USAGE_ONLY);
	}
	p = temp + strlen(temp) - 1;
	while(p >= temp) {
		if(!isdigit(*p)) {
			fprintf(stderr,"Invalid mode of program entered.\n");
			return(USAGE_ONLY);
		}
		p--;
	}
	if(sscanf(str,"%d",&dz->mode)!=1) {
		fprintf(stderr,"Cannot read mode of program.\n");
		return(USAGE_ONLY);
	}
	if(dz->mode <= 0 || dz->mode > dz->maxmode) {
		fprintf(stderr,"Program mode value [%d] is out of range [1 - %d].\n",dz->mode,dz->maxmode);
		return(USAGE_ONLY);
	}
	dz->mode--;		/* CHANGE TO INTERNAL REPRESENTATION OF MODE NO */
	return(FINISHED);
}

/******************************** CREATE_BROWNIAN_BUFFERS *******************************
 *
 *	input buf length = dz->insams[0] + 1 (wraparound point)
 *	event buflen = dz->evbufcnt
 *	obuflen = dz->evbufcnt
 *	ovflwbuf = dz->evbufcnt
 */

#define SAFETY	48

int create_brownian_buffers(dataptr dz) 
{
	int exit_status;
	double srate = (double)dz->infile->srate, maxatt, maxdec, maxtransposition;
	int maxevdur, bigbufsize, real_buflen;
	dz->bufcnt = 4;
	if(dz->mode == 0) {
		if(dz->brksize[BRATT]) {
			if((exit_status = get_maxvalue_in_brktable(&maxatt,BRATT,dz))<0)
				return exit_status;
		} else 
			maxatt = dz->param[BRATT];
		if(dz->brksize[BRDEC]) {
			if((exit_status = get_maxvalue_in_brktable(&maxdec,BRDEC,dz))<0)
				return exit_status;
		} else 
			maxdec = dz->param[BRDEC];
		maxevdur = (int)ceil((maxatt + maxdec) * srate) + SAFETY;
	} else {
		if(dz->brksize[BRPLO]) {
			if((exit_status = get_minvalue_in_brktable(&maxatt,BRPLO,dz))<0)
				return exit_status;
		}
		maxtransposition = dz->param[BRPSTT] - dz->param[BRPLO];				//	Max downward transpos inb semitones
		maxtransposition  = pow(2.0,(maxtransposition * OCTAVES_PER_SEMITONE));	//	Max downward transpos as ratio
		maxevdur = (int)ceil(dz->insams[0] * maxtransposition) + SAFETY;
	}
	dz->buflen = maxevdur * dz->iparam[BRCHANS];
	bigbufsize = (dz->insams[0] + 1) + (3 * dz->buflen);

	if((dz->bigbuf = (float *)malloc(bigbufsize * sizeof(float))) == NULL) {
		sprintf(errstr,"INSUFFICIENT MEMORY to create sound buffers.\n");
		return(PROGRAM_ERROR);
	}
	if((dz->sampbuf = (float **)malloc(dz->bufcnt * sizeof(float *))) == NULL) {
		sprintf(errstr,"INSUFFICIENT MEMORY to create sound buffers.\n");
		return(PROGRAM_ERROR);
	}
	if((dz->sbufptr = (float **)malloc(dz->bufcnt * sizeof(float *)))==NULL) {
		sprintf(errstr,"INSUFFICIENT MEMORY establishing sample buffer pointers.\n");
		return(MEMORY_ERROR);
	}
	dz->sampbuf[0] = dz->sbufptr[0] = dz->bigbuf;
	dz->sampbuf[1] = dz->sbufptr[1] = dz->sampbuf[0] + dz->insams[0] + 1;
	dz->sampbuf[2] = dz->sbufptr[2] = dz->sampbuf[1] + dz->buflen;
	dz->sampbuf[3] = dz->sbufptr[3] = dz->sampbuf[2] + dz->buflen;
	real_buflen = dz->buflen;
	dz->buflen = dz->insams[0];				//	Read input sound
	if((exit_status = read_samps(dz->sampbuf[0],dz))<0)
		return(exit_status);
	dz->sampbuf[0][dz->buflen] = 0.0f;		//	wraparound point
	dz->buflen  = real_buflen;
	return(FINISHED);
}

/*************************** GET_NEXT_PITCH **************************/

int get_next_pitch(double *currentpitch,double thistime,dataptr dz)
{
	double range, rangepos, randrangebot, randrangetop, randrange, randval;
	int qstep;
	double negval, nextpitch, pstep;

	range = dz->param[BRPHI] - dz->param[BRPLO];		//	total pitch range
	if(range <= dz->param[BRPSTEP]) {
		sprintf(errstr,"RANGE (%.4lf TO %.4lf) TOO NARROW FOR PITCH-STEPS (%.4lf) AT TIME %lf\n",
		dz->param[BRPHI],dz->param[BRPLO],dz->param[BRPSTEP],thistime);
		return DATA_ERROR;
	}
	rangepos = (*currentpitch - dz->param[BRPLO])/range;//	Relative position of current pitch in current range (between 0 and 1)
	if(rangepos <= 0.5) {								//	Selection range for random numbers is adjusted
		randrangebot = -(2.0 * rangepos);				//	so that probability of moving downwards if near range bottom, is reduced
		randrangetop = 1.0;								//	and probability of moving upwards if near range top, is reduced.
		randrange = -randrangebot + 1.0;				//	Total adjusted range.
	} else {
		randrangebot = -1.0;
		randrangetop = 2.0 * (1.0 - rangepos);
		randrange = 1.0 + randrangetop;
	}
	randval = drand48();								//	randval generated
	negval = randval * randrange;						//	randval used to determine up or down pitch-motion in weighted fashion.
	negval += randrangebot;
	if(negval < 0.0)
		negval = -1.0;
	else
		negval = 1.0;
	pstep = randval * dz->param[BRPSTEP];				//	Generate a random pitchstep (+ve)
	qstep = (int)round(pstep/BRPQ);						//	Quantise it
	pstep = qstep * BRPQ;
	pstep *= negval;									//	Assign (weighted) +ve/-ve assignment
	nextpitch = *currentpitch + pstep;
	if(nextpitch < dz->param[BRPLO]	|| nextpitch > dz->param[BRPHI]) {
		pstep = -pstep;									//	Step reflected off top or bottom of range, if they are crossed
		nextpitch = *currentpitch + pstep;
	}
	*currentpitch = nextpitch;
	return FINISHED;
}

/*************************** GET_TIMESTEP **************************/

double get_timestep(dataptr dz)
{
	int qstep;
	double	tstep  = drand48() * 2.0 * dz->param[BRTICK];	//	Timestep lies between 0 and twice clockrate
	qstep = (int)round(tstep/BRTQ);							//	Quantise it
	qstep = max(1,qstep);									//	Timestep cannot be zero
	tstep = qstep * BRTQ;
	return tstep;
}

/*************************** GET_POSITION **************************/

int get_position(double *space_position,dataptr dz)
{
	int qstep;
	double	sstep  = (drand48() * 2.0) - 1.0;			//	Range -1 to +1
	sstep  *= dz->param[BRSSTEP];						//	Range -BRSSTEP to +BRSSTEP
	qstep = (int)round(sstep/BRSQ);						//	Quantise it
	sstep = qstep * BRSQ;
	*space_position += sstep;							//	Move position
	if(dz->vflag[0]) {
		if(*space_position < 0.0)						//	Reflect off edges of space, if linear lspkr array	
			*space_position += 2.0 * sstep;
		else if(*space_position >= (dz->iparam[BRCHANS] - 1))
			*space_position -= 2.0 * sstep;
	} else {											//	Otherwise wrap-around surround-sound
		if(*space_position < 0.0)
			*space_position += dz->param[BRCHANS];
		else if(*space_position >= dz->param[BRCHANS])
			*space_position -= dz->param[BRCHANS];
	}
	return FINISHED;
}

/*************************** GET_GAIN **************************
 *
 * Once gain goes to zero, stop process.
 */

int get_gain(double *current_gain,dataptr dz)
{
	int qstep;
	double current_dB, orig_dB, astep;
	astep  = (drand48() * 2.0) - 1.0;		//	Range -1 to +1
	astep  *= dz->param[BRASTEP];			//	Range -BRASTEP to +BRASTEP
	qstep = (int)round(astep/BRAQ);			//	Quantise it
	astep = qstep * BRAQ;						

	current_dB  = 1.0/(*current_gain);		//	Convert  current gain to dB
	current_dB  = log10(current_dB);
	current_dB *= 20.0;
	current_dB  = -current_dB;
	orig_dB = current_dB;
	current_dB += astep;					//	Incr dB

	if(current_dB >= 0.0)					//	Avoid gain >= 1.0 (bounce gain downwards)
		current_dB = orig_dB - astep;

	if(dz->param[BRAMIN] <= 0.0) {			//	If no minimum amp set
		if(current_dB <= MIN_DB_ON_16_BIT) { //	check if gain has reached minimum
			*current_gain =  0.0;			//	And if so, return gain of zero
			return(FINISHED);				//	(which will halt the process)
		}
	} else {								//	If minimum amp has been set,
		if(current_dB <= -dz->param[BRAMIN]) {//	if minimum reached
			current_dB = orig_dB - astep;	//	bounce amplitude off minimum value.
			if(current_dB >= 0.0) {			//	If amp then hits maximum (narrow amp range relative to amp jumps)
				*current_gain =  1.0;		//	set amp to full and return		
				return(FINISHED);
			}
		}
	}
	current_dB  = -current_dB;				//	Convert dB to gain, and return
	current_dB /= 20.0;
	current_dB  = pow(10.0,current_dB);
	*current_gain  = 1.0/current_dB;
	return(FINISHED);
}

/************************************ WRITE_EVENT ***********************************/

int do_brownian(dataptr dz) 
{
	int exit_status, passno;
	double tabincr, normaliser = 1.0, maxsamp = 0.0, current_time, current_pitch, current_gain, srate = (double)dz->infile->srate;
	double current_position;
	float *obuf = dz->sampbuf[2];
	int obufpos, n;
	tabincr = (double)dz->insams[0]/srate; //	tabincr to read table once per second, i.e. at 1Hz
	for(passno=0;passno<2;passno++) {
		display_virtual_time(0,dz);
		current_position = dz->param[BRSSTT];
		if(passno == 0) {
			fprintf(stdout,"INFO: Assessing output level.\n");
			fflush(stdout);
		} else {
			fprintf(stdout,"\nINFO: Generating output sound.\n");
			fflush(stdout);
		}
		srand((int)dz->iparam[BRSEED]);	//	(Re)initialise random-number generator.
		current_time = 0;
		memset((char *)obuf,0,dz->buflen * 2 * sizeof(float));	//	Initialise outbuf AND overflow buf to 0
		dz->total_samps_written = 0;
		current_pitch = dz->param[BRPSTT];
		current_gain = 1.0;
		obufpos = 0;
		while(current_time < dz->param[BRDUR]) {
			if((exit_status = read_values_from_all_existing_brktables(current_time,dz))<0)
				return exit_status;
			if((exit_status = write_event(current_pitch,current_gain,tabincr,dz))<0)
				return exit_status;
			if((exit_status = write_event_to_output(passno,current_time,current_position,&maxsamp,normaliser,&obufpos,dz))<0)
				return exit_status;
			if((exit_status = get_next_pitch(&current_pitch,current_time,dz))<0)
				return exit_status;
			if(dz->param[BRASTEP] > 0.0) {
				get_gain(&current_gain,dz);
				if(current_gain <= 0.0) {
					if(passno == 0) {
						fprintf(stdout,"INFO: Process fades to zero at %.2lf secs\n",current_time);
						fflush(stdout);
					}
					break;
				}
			}
			if(dz->iparam[BRCHANS] > MONO) {
				if((exit_status = get_position(&current_position,dz))<0)
					return exit_status;
			}
			current_time += get_timestep(dz);
		}
		if(passno == 0) {
			if(dz->total_samps_written == 0) {		//	If no output has been written (and therefore no maximum assessed)
				for(n = 0;n < obufpos;n++) {		//	calculate the maximum sample NOW
					if(fabs(obuf[n]) > maxsamp)
						maxsamp = fabs(obuf[n]);
				}
			}
			normaliser = 0.95/maxsamp;
		} else {
			if(obufpos > 0) {		//	Write any remaining samples in output buffer
				for(n=0;n < obufpos;n++)
					obuf[n] = (float)(obuf[n] * normaliser);
				if((exit_status = write_samps(obuf,obufpos,dz))<0)
					return(exit_status);
			}
		}
	}
	return FINISHED;
}

/************************************ WRITE_EVENT ***********************************
 *
 * Writes a specifically pitched event, at specified level, into the event buffer.
 */

int write_event(double current_pitch,double current_gain,double tabincr,dataptr dz)
{
	float *ibuf = dz->sampbuf[0], *obuf = dz->sampbuf[1];
	double tabpos = 0.0, frac, diff, thisval, env, frq, srate = (double)dz->infile->srate;
	int thispos, nextpos, n, m, tabsize = dz->insams[0];
	memset((char *)obuf,0,dz->buflen * sizeof(float));
	dz->tempsize = (int)round(dz->param[BRDUR] * srate) * dz->iparam[BRCHANS];
	if(dz->mode == 0) {
		dz->iparam[BRATT] = (int)round(dz->param[BRATT] * srate);
		dz->iparam[BRDEC] = (int)round(dz->param[BRDEC] * srate);
		dz->evsamps = dz->iparam[BRATT] + dz->iparam[BRDEC];
		frq = miditohz(current_pitch);
		tabincr *= frq;												//	Frq-related table-read increment
		for(n = 0,m = -dz->iparam[BRATT]; n< dz->evsamps;n++,m++) {	//	m gets to zero at end of attack = start of decay
			thispos = (int)floor(tabpos);							//	Read input sample by interpolation
			nextpos = thispos+1;									//	with incr determined by pitch/frq
			frac = tabpos - thispos;
			diff =  ibuf[nextpos] - ibuf[thispos];
			diff *= frac;
			thisval = ibuf[thispos] + diff;
			if(n < dz->iparam[BRATT]) {								//	Do enveloping on the fly
				env = (double)n/(double)dz->iparam[BRATT];
				env = pow(env,dz->param[BRASLP]);
			} else {
				env = 1.0 - ((double)m/(double)dz->iparam[BRDEC]);
				env = max(env,0.0);
				env = pow(env,dz->param[BRDSLP]);
			}
			env *= current_gain;									//	Scale envelope by current loudness
			thisval *= env;
			obuf[n] = (float)thisval;
			tabpos += tabincr;										//	Advance pointer-read, wrapping around at table end
			if(tabpos >= tabsize)
					tabpos -= tabsize;
		}
	} else {
		tabincr = current_pitch - dz->param[BRPSTT];				//	semitone transposition
		tabincr = pow(2.0,(tabincr * OCTAVES_PER_SEMITONE));		//	frqratio transposition
		dz->evsamps = 0;
		while(tabpos < dz->insams[0]) {
			thispos = (int)floor(tabpos);							//	Read input sample by interpolation
			nextpos = thispos+1;									//	with incr determined by pitch/frq
			frac = tabpos - thispos;
			diff =  ibuf[nextpos] - ibuf[thispos];
			diff *= frac;
			thisval = ibuf[thispos] + diff;
			thisval *= current_gain;								//	Scale envelope by current loudness
			obuf[dz->evsamps] = (float)thisval;
			tabpos += tabincr;										//	Advance pointer-read
			dz->evsamps++;
		}
	}
	return FINISHED;
}

/************************************ WRITE_EVENT_TO_OUTPUT ***********************************
 *
 * Adds a specifically pitched event from event-buffer into output file, at correct time.
 */
int write_event_to_output(int passno,double current_time,double current_position,double *maxsamp,double normaliser,int *obufpos,dataptr dz)
{
	int current_left, current_right;
	int bufpos, n, j, samps_written;
	float val;
	int ochans = dz->iparam[BRCHANS];
	double leftgain, rightgain, srate = (double)dz->infile->srate;
	float *ibuf = dz->sampbuf[1];							//	Input buffer is event buffer
	float *obuf = dz->sampbuf[2], *ovflwbuf = dz->sampbuf[3];
	bufpos = (int)round(current_time * srate) * ochans;	//	Start of current N-channel block of samples in output file
	bufpos -= dz->total_samps_written;						//	Start of current N-channel block of samples in buffer	

	while(bufpos >= dz->buflen) {							//	If we've reached end of input buffer						
		if(passno==0) {										//	On first pass, check maximum sample (for later normalisation)	
			for(n = 0;n < dz->buflen;n++) {
				if(fabs(obuf[n]) > *maxsamp)
					*maxsamp = fabs(obuf[n]);
			}
			dz->total_samps_written += dz->buflen;			//	Maintain count of "written" samples
			time_display(dz->total_samps_written,dz);
		} else {
			for(n = 0;n < dz->buflen;n++)					//	On second pass, normalise output, and write to file
				obuf[n] = (float)(obuf[n] * normaliser);
			if(dz->needpeaks){
				for(n=0;n < dz->buflen; n += dz->iparam[BRCHANS]){
					for(j = 0;j < dz->outchans;j++){
						val = (float)fabs(obuf[n+j]);
						/* this way, posiiton of first peak value is stored */
						if(val > dz->outpeaks[j].value){
							dz->outpeaks[j].value = val;
							dz->outpeaks[j].position = dz->outpeakpos[j];
						}
					}
					/* count framepos */
					for(j=0;j < dz->outchans;j++)
						dz->outpeakpos[j]++;
				}
			}
			if((samps_written = fputfbufEx(obuf,dz->buflen,dz->ofd))<=0) {
				sprintf(errstr,"Can't write to output soundfile: %s\n",sferrstr());
				return(SYSTEM_ERROR);
			}
			dz->total_samps_written += samps_written;	
			time_display(dz->total_samps_written,dz);
		}													//	copy back any overflow, and reset overflow buf to zero
		memcpy((char *)obuf,(char *)ovflwbuf,dz->buflen * sizeof(float));
		memset((char *)ovflwbuf,0,dz->buflen * sizeof(float));
		bufpos -= dz->buflen;
	}
	if(dz->iparam[BRCHANS] == MONO) {
		for(n=0;n<dz->evsamps;n++) {
			obuf[bufpos] = (float)(obuf[bufpos] + ibuf[n]);
			bufpos++;
		}
	} else {
		current_left = (int)floor(current_position);			//	Find appropriate "left" and "right" channels for current-position of output
		current_right = current_left + 1;
		current_position -= current_left;						//	position becomes 0to1-range-position between adjacent channels
		current_position = (current_position * 2.0) - 1.0;		//	position becomes -1to+1-range- position between adjacent channels
		current_position = max(current_position,-1.0);
		current_position = min(current_position,1.0);
		pancalc(current_position,&leftgain,&rightgain);			//	Get adjusted gain for "left" and "right" contribs to output
		bufpos += current_left;									//	Go to correct "left" channel

		//	dz->evsamps has maximum vallue less than buflen, and overflow has length buflen:
		//	so wherver in current buffer the write starts, it will end within the buffer or the overflow

		for(n=0;n<dz->evsamps;n++) {							//	Add new event into output buffer, in correct (pair of) channels
			obuf[bufpos] = (float)(obuf[bufpos] + (ibuf[n] * leftgain));
			bufpos++;
			obuf[bufpos] = (float)(obuf[bufpos] + (ibuf[n] * rightgain));
			bufpos--;
			bufpos += ochans;
		}
	}
	*obufpos = bufpos;
	return FINISHED;
}

/************************************ PANCALC *******************************/

#define SIGNAL_TO_LEFT  (0)
#define SIGNAL_TO_RIGHT (1)

void pancalc(double position,double *leftgain,double *rightgain)
{
	int dirflag;
	double temp;
	double relpos;
	double reldist, invsquare;

	if(position < 0.0)
		dirflag = SIGNAL_TO_LEFT;		/* signal on left */
	else
		dirflag = SIGNAL_TO_RIGHT;

	if(position < 0) 
		relpos = -position;
	else 
		relpos = position;
	if(relpos <= 1.0){		/* between the speakers */
		temp = 1.0 + (relpos * relpos);
		reldist = ROOT2 / sqrt(temp);
		temp = (position + 1.0) / 2.0;
		*rightgain = temp * reldist;
		*leftgain = (1.0 - temp ) * reldist;
	} else {				/* outside the speakers */
		temp = (relpos * relpos) + 1.0;
		reldist  = sqrt(temp) / ROOT2;   /* relative distance to source */
		invsquare = 1.0 / (reldist * reldist);
		if(dirflag == SIGNAL_TO_LEFT) {
			*leftgain = invsquare;
			*rightgain = 0.0;
		} else {   /* SIGNAL_TO_RIGHT */
			*rightgain = invsquare;
			*leftgain = 0;
		}
	}
}

/******************************* TIME_DISPLAY **************************/

void time_display(int samps_sent,dataptr dz)
{
	if(sloom)
		dz->process = MTOS;
	display_virtual_time(samps_sent,dz);
	if(sloom)
		dz->process = BROWNIAN;
}