ComposerDesktopProject/dev/science/bounce.c

/*
 * Copyright (c) 1983-2023 Trevor Wishart and Composers Desktop Project Ltd
 * http://www.trevorwishart.co.uk
 * http://www.composersdesktop.com
 *
 This file is part of the CDP System.
 
 The CDP System is free software; you can redistribute it
 and/or modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.
 
 The CDP System is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
 License along with the CDP System; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 02111-1307 USA
 *
 */
#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 BOUNCESPLICE 3      //  3mS splices for cuts of src in bounce
#define BOUNCEMINDUR 0.151  //  Minimum length of bounce unit , to allow splice at start OR end
#define CUTBNC 0
#define KEEPEND 1


#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 = "6.1.0";

//CDP LIB REPLACEMENTS
static int check_bounce_param_validity_and_consistency(dataptr dz);
static int setup_bounce_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_bounce_param_ranges_and_defaults(dataptr dz);
static int handle_the_outfile(int *cmdlinecnt,char ***cmdline,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 create_bounce_sndbufs(dataptr dz);
static int setup_and_init_input_brktable_constants(dataptr dz,int brkcnt);
static int bounce_param_preprocess(dataptr dz);
static int handle_buffer_output(int passno,double *maxsamp,int *maxpos,int fadelen,int *fadecnt,int *start_of_buf,int bnc1len,double normdrop,int samps_to_write,int *opos,dataptr dz);
static int normalisation_fade(int fadelen, int *fadecnt, int start_of_buf, int absfadestt, double normdrop, dataptr dz);
static int bounce(dataptr dz);

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

int main(int argc,char *argv[])
{
    int exit_status;
    dataptr dz = NULL;
    char **cmdline;
    int  cmdlinecnt;
    int n;
//  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 = 0;
        // setup_particular_application =
        if((exit_status = setup_bounce_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_bounce_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_bounce_param_validity_and_consistency(dz))<0) {
        print_messages_and_close_sndfiles(exit_status,is_launched,dz);
        return(FAILED);
    }
    is_launched = TRUE;
    dz->bufcnt = 3;
    if((dz->sampbuf = (float **)malloc(sizeof(float *) * (dz->bufcnt+1)))==NULL) {
        sprintf(errstr,"INSUFFICIENT MEMORY establishing sample buffers.\n");
        return(MEMORY_ERROR);
    }
    if((dz->sbufptr = (float **)malloc(sizeof(float *) * dz->bufcnt))==NULL) {
        sprintf(errstr,"INSUFFICIENT MEMORY establishing sample buffer pointers.\n");
        return(MEMORY_ERROR);
    }
    for(n = 0;n <dz->bufcnt; n++)
        dz->sampbuf[n] = dz->sbufptr[n] = (float *)0;
    dz->sampbuf[n] = (float *)0;

    if((exit_status = create_bounce_sndbufs(dz))<0) {                               // CDP LIB
        print_messages_and_close_sndfiles(exit_status,is_launched,dz);
        return(FAILED);
    }
    //param_preprocess()                        redundant
    if((exit_status = bounce_param_preprocess(dz))<0) {
        print_messages_and_close_sndfiles(exit_status,is_launched,dz);
        return(FAILED);
    }
    //spec_process_file =
    if((exit_status = bounce(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 exit_status;
    char *filename = (*cmdline)[0];
    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);
        }
    }
    strcpy(dz->outfilename,filename);      
    if((exit_status = create_sized_outfile(filename,dz))<0)
        return(exit_status);
    (*cmdline)++;
    (*cmdlinecnt)--;
    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_BOUNCE_APPLICATION *******************/

int setup_bounce_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((exit_status = set_param_data(ap,0   ,5,5,"idddd"))<0)
        return(FAILED);
    if((exit_status = set_vflgs(ap,"s",1,"d","ce",2,0,"00"))<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((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_BOUNCE_PARAM_RANGES_AND_DEFAULTS *******************/

int setup_bounce_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[BNC_NUMBER]  = 1;
    ap->hi[BNC_NUMBER]  = 100;
    ap->default_val[BNC_NUMBER] = 8;
    ap->lo[BNC_STTSTEP] = 0.04;
    ap->hi[BNC_STTSTEP] = 10.0;
    ap->default_val[BNC_STTSTEP] = 1.0;
    ap->lo[BNC_SHORTEN] = 0.1;
    ap->hi[BNC_SHORTEN] = 1.0;
    ap->default_val[BNC_SHORTEN] = 0.92;
    ap->lo[BNC_ENDLEV]  = 0.0;
    ap->hi[BNC_ENDLEV]  = 1.0;
    ap->default_val[BNC_ENDLEV] = 0.05;
    ap->lo[BNC_LEVWRP]  = .01;
    ap->hi[BNC_LEVWRP]  = 100.0;
    ap->default_val[BNC_LEVWRP] = 1.0;
    ap->lo[BNC_MINDUR]  = 0.0;
    ap->hi[BNC_MINDUR]  = 1.0;
    ap->default_val[BNC_MINDUR] = 0.02;
    dz->maxmode = 0;
    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_bounce_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(void)
{
    usage2("bounce");
    return(USAGE_ONLY);
}

/**************************** CHECK_BOUNCE_PARAM_VALIDITY_AND_CONSISTENCY *****************************/

int check_bounce_param_validity_and_consistency(dataptr dz)
{
    return FINISHED;
}

/******************************** DBTOLEVEL ***********************/

double dbtolevel(double val)
{
    int isneg = 0;
    if(flteq(val,0.0))
        return(1.0);
    if(val < 0.0) {
        val = -val;
        isneg = 1;
    }
    val /= 20.0;
    val = pow(10.0,val);
    if(isneg)
        val = 1.0/val;
    return(val);
}   

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

int get_the_process_no(char *prog_identifier_from_cmdline,dataptr dz)
{
    if(!strcmp(prog_identifier_from_cmdline,"bounce"))              dz->process = BOUNCE;
    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,"bounce")) {
        fprintf(stderr,
        "USAGE:\n"
        "bounce bounce inf outf count startgap shorten endlevel ewarp [-smin] [-e] [-c]\n"
        "\n"
        "\"Bounce\" a sound (Accelerating repeats, decaying in level).\n"
        "\n"
        "COUNT    Number of bounces.\n"
        "STARTGAP Gap between src start and 1st bounce. (0.04 to 10)\n"
        "SHORTEN  Bounce gap reduction (multiplier) from 1 bounce to next.\n"
        "ENDLEVEL Loudness of last bounce as fraction of src level. (0 to 1)\n"
        "EWARP    Decay warp.        Decresc at start : >1.0 greater : < 1.0 less.\n"
        "-sMIN    Shrink bounced elements in same proportion as accel. Min = min dur.\n"
        "         (Value of zero turns off shrinkage).\n"
        "-c       If repeating elements overlap, cut to avoid this overlap.\n"
        "-e       Shrink elements by trimming start. (Default, by trimming end).\n"
        "\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);
}

/******************************** GATE ********************************/

int bounce(dataptr dz)
{
    int exit_status, chans = dz->infile->channels, passno, bouncecnt, /*numberlessone,*/ endsampstepset, levcnt;
    double levchange, levpos, thislevel, normaliser, maxsamp, splcincr, normdrop = 0.0, lastratio, thisratio, srate = (double)dz->infile->srate;
    int gpsampdur, gpsplen, absplen, opos, start_of_buf, maxpos = 0, startsplice, endsplice, sampstep = 0, endsampstep = 0, n, m, k, minsampdur;
    int fadelen = 0, fadecnt = 0, enddur, absbouncepos;
    float *ibuf = dz->sampbuf[0], *obuf = dz->sampbuf[1];
    int *steps;
    double *levels;
    int minstep;
    if((steps = (int *)malloc((dz->iparam[BNC_NUMBER] + 2) * sizeof(int)))==NULL) { //  Step from orig to qist bounce, for BNC_NUMBER bounces
        sprintf(errstr,"INSUFFICIENT MEMORY TO STORE LENGTHS OF BOUNCE-STEPS.\n");      //  + a pseudo-step (= end of last bounce if it is to be cut)
        return(MEMORY_ERROR);
    }
    if((levels = (double *)malloc((dz->iparam[BNC_NUMBER] + 1) * sizeof(double)))==NULL) {
        sprintf(errstr,"INSUFFICIENT MEMORY TO STORE LENGTHS OF BOUNCE-STEPS.\n");
        return(MEMORY_ERROR);
    }
    minsampdur    = (int)round(dz->param[BNC_MINDUR] * dz->infile->srate) * chans;
//    numberlessone = dz->iparam[BNC_NUMBER] - 1;
    gpsplen = (int)round(BOUNCESPLICE * MS_TO_SECS * (double)dz->infile->srate);
    minstep = (gpsplen/2) * chans;
    absplen = gpsplen * chans;
    gpsampdur = dz->insams[0]/chans;
    normaliser = 1.0;
    bouncecnt = 0;
    levchange = 1.0 - dz->param[BNC_ENDLEV];
    levels[0] = 1.0;
    steps[0]  = (int)round(dz->param[BNC_STTSTEP] * srate) * chans;
    if(sloom)                                                           //  Pre-calc total output len (for progress-bar display)
        dz->tempsize = steps[0];
    lastratio = dz->param[BNC_STTSTEP];
    bouncecnt++;
    levcnt = dz->iparam[BNC_NUMBER] - 1;
    while(bouncecnt <= dz->iparam[BNC_NUMBER]) {
        levpos = (double)levcnt/dz->iparam[BNC_NUMBER];                 //  levpos = Where we are in change of level, linearly interpd e.g. 2/3 1/3 0 for 3 bounces
        levpos = pow(levpos,dz->param[BNC_LEVWRP]);                     //  Warped at (for pow-decay) 
        levels[bouncecnt] = levchange * levpos;                         //  i.e. endlevel+2/3change   endlevel+1/3change    endlevel
        levels[bouncecnt] += dz->param[BNC_ENDLEV];                         

        thisratio = lastratio * dz->param[BNC_SHORTEN];
        steps[bouncecnt] = (int)round(thisratio * srate) * chans;   //  Distance to next bounce
        if(steps[bouncecnt] < minstep) {
            dz->iparam[BNC_NUMBER] = bouncecnt;
            fprintf(stdout,"INFO: Bounce Steps get too short for splices at bounce %d : curtailing.\n",bouncecnt);
            fflush(stdout);
            break;
        }
        lastratio = thisratio;
        if(sloom)
            dz->tempsize += steps[bouncecnt];
        bouncecnt++;
        levcnt--;
    }
    thisratio = lastratio * dz->param[BNC_SHORTEN];
    steps[bouncecnt] = (int)round(gpsampdur * thisratio) * chans;       //  Even last event has a distance-to-next-bounce

    if(sloom && !dz->vflag[CUTBNC]) {                                   //  If src not cut
        dz->tempsize -= steps[bouncecnt-1];                             //  Go back to start of last bounced-element
        dz->tempsize += dz->insams[0];                                  //  and add duration of src (duration of element)
    }

    for(passno = 0;passno < 2; passno++) {
        start_of_buf = 0;
        absbouncepos = 0;
        if(sloom)
            display_virtual_time(0,dz);
        memset((char *)obuf,0,dz->buflen * 2 * sizeof(float));          //  Clear outbuf & ovflwbuf
        sndseekEx(dz->ifd[0],0,0);

        dz->total_samps_read = 0;
        dz->samps_left = dz->insams[0];
        if((exit_status = read_samps(ibuf,dz))<0)
            return(exit_status);
        dz->total_samps_written = 0;
        maxsamp = 0.0;
        opos = 0;                                                       //  Write src, before bouncing
        if(dz->vflag[CUTBNC] && dz->duration > dz->param[BNC_STTSTEP]) {
            endsplice = steps[0];
            startsplice = endsplice - absplen;
            memcpy((char *)obuf,(char *)ibuf,startsplice * sizeof(float));
            n = startsplice;
            k = gpsplen - 1;
            while(k >= 0) {
                splcincr = (double)k/(double)gpsplen;
                for(m = 0; m < chans; m++) {
                    obuf[n] = (float)(ibuf[n] * splcincr);
                    n++;
                }
                k--;
            }
        } else
            memcpy((char *)obuf,(char *)ibuf,dz->insams[0] * sizeof(float));
        bouncecnt = 1;
        while(bouncecnt <= dz->iparam[BNC_NUMBER]) {
            thislevel = levels[bouncecnt];                          
            sampstep  = steps[bouncecnt-1];
            absbouncepos += sampstep;
            opos = absbouncepos - start_of_buf;
            while(opos >= dz->buflen) {                                 //  If outbuffer filled
                if ((exit_status = handle_buffer_output(passno,&maxsamp,&maxpos,fadelen,&fadecnt,&start_of_buf,steps[0],normdrop,dz->buflen,&opos,dz)) < 0)
                    return exit_status;
            }
            if(dz->vflag[CUTBNC] || dz->param[BNC_MINDUR] > 0.0) {      //  If sampstep to next bounce is less than src len, need cut bounced copy to fit
                endsampstepset = 0;
                if(dz->vflag[CUTBNC]) {
                    endsampstep = steps[bouncecnt];                     //  Actual sampstep in samples = max length of current bounced-item
                    endsampstepset = 1;
                }
                if(dz->param[BNC_MINDUR] > 0.0) {                       //  If bounced items are shrunk, shirnk proprtionately to shrinkage in bounce-steps
                    enddur = (int)round(((double)steps[bouncecnt]/(double)steps[0]) * (double)gpsampdur) * chans;
                    enddur = max(enddur,minsampdur);                    //  but not to a duration less than the MIn allowed 
                    if(endsampstepset)
                        endsampstep = min(enddur,endsampstep);          //  length of bounced item is shorter of 2 possible curtails
                    else 
                        endsampstep = enddur;
                }

                if(endsampstep < dz->insams[0]) {                       //  Overlap
                    if(dz->vflag[KEEPEND]) {
                        startsplice = dz->insams[0] - endsampstep;
                        endsplice = startsplice +  absplen;             //  Splice off start
                        k = 0;
                        n = startsplice;
/* TEST
if(dz->total_samps_written + opos > 132496) {
fprintf(stdout,"AAA at %lf\n",(dz->total_samps_written + opos)/(double)dz->infile->srate);
fflush(stdout);
}
 TEST */
                        while(k < gpsplen) {
                            splcincr = (double)k/(double)gpsplen;
                            for(m = 0; m < chans; m++) {
                                obuf[opos] = (float)(obuf[opos] + (ibuf[n++] * thislevel * splcincr));
                                opos++;
                            }
                            k++;
/* TEST
if(dz->total_samps_written + opos > 132496) {
fprintf(stdout,"BBB at %lf\n",(dz->total_samps_written + opos)/(double)dz->infile->srate);
fflush(stdout);
}
 TEST */
                        }
                        while(n < dz->insams[0])
/* TEST
if(dz->total_samps_written + opos > 132496) {
fprintf(stdout,"CCC at %lf\n",(dz->total_samps_written + opos)/(double)dz->infile->srate);
fflush(stdout);
}
 TEST */
                            obuf[opos++] = (float)(ibuf[n++] * thislevel);
                    } else {
/* TEST
if(dz->total_samps_written + opos > 132496) {
fprintf(stdout,"DDD at %lf\n",(dz->total_samps_written + opos)/(double)dz->infile->srate);
fflush(stdout);
}
 TEST */
                        startsplice = endsampstep - absplen;            //  Splice off end
                        endsplice = endsampstep;
                        for(n=0;n<startsplice;n++) {
                            obuf[opos] = (float)(obuf[opos] + (ibuf[n] * thislevel));
                            opos++;
                        }
/* TEST
if(dz->total_samps_written + opos > 132496) {
fprintf(stdout,"EEE bouncecnt = %d at %lf\n",bouncecnt,(dz->total_samps_written + opos)/(double)dz->infile->srate);
fflush(stdout);
}
 TEST */
                        k = gpsplen - 1;
                        while(k >= 0) {
                            splcincr = (double)k/(double)gpsplen;
                            for(m = 0; m < chans; m++) {
                                obuf[opos] = (float)(obuf[opos] + (ibuf[n++] * thislevel * splcincr));
                                opos++;
                            }
                            k--;
                        }
/* TEST
if(dz->total_samps_written + opos > 132496) {
fprintf(stdout,"FFF bouncecnt = %d at %lf\n",bouncecnt,(dz->total_samps_written + opos)/(double)dz->infile->srate);
fflush(stdout);
}
 TEST */
                    }
                } else {                                                //  No overlap, straight copy
/* TEST
if(dz->total_samps_written + opos > 132496) {
fprintf(stdout,"GGG\n");
fflush(stdout);
}
 TEST */
                    for(n=0;n<dz->insams[0];n++) {
                        obuf[opos] = (float)(obuf[opos] + (ibuf[n] * thislevel));
                        opos++;
                    }
                }
            } else {                                                    //  As overlap possible, ADD new copy to output
/* TEST
if(dz->total_samps_written + opos > 132496) {
fprintf(stdout,"HHH\n");
fflush(stdout);
}
 TEST */
                for(n=0;n<dz->insams[0];n++) {
                    for(n=0;n<dz->insams[0];n++) {
                        obuf[opos] = (float)(obuf[opos] + (ibuf[n] * thislevel));
                        opos++;
                    }
                }
            }
            bouncecnt++;
        }
        if(opos > 0) {
/* TEST
if(dz->total_samps_written + opos > 132496) {
fprintf(stdout,"III bouncecnt = %d at %lf\n",bouncecnt,(dz->total_samps_written + opos)/(double)dz->infile->srate);
fflush(stdout);
}
 TEST */
            while ((exit_status = handle_buffer_output(passno,&maxsamp,&maxpos,fadelen,&fadecnt,&start_of_buf,steps[0],normdrop,opos,&opos,dz)) < 0)
                return exit_status;
        }
        if(passno == 0 && maxsamp > 0.95) {
            normaliser = 0.95/maxsamp;
            normdrop = 1.0 - normaliser;
            fadelen = maxpos - steps[0];
        }
    }
    return FINISHED;
}

/*************************** CREATE_BOUNCE_SNDBUFS **************************/

int create_bounce_sndbufs(dataptr dz)
{
    int n;
    int bigbufsize;
    int framesize, secsize;
    framesize = F_SECSIZE * dz->infile->channels * 2;
    if(dz->sbufptr == 0 || dz->sampbuf==0) {
        sprintf(errstr,"buffer pointers not allocated: create_sndbufs()\n");
        return(PROGRAM_ERROR);
    }
    dz->buflen = dz->insams[0];
    secsize = dz->buflen/framesize;
    secsize++;
    dz->buflen = secsize * framesize;
    bigbufsize = dz->buflen * sizeof(float);
    if(dz->buflen < 0 || bigbufsize < 0) {
        sprintf(errstr,"INPUT FILE too large for this process.\n");
        return(PROGRAM_ERROR);
    }
    if((dz->bigbuf = (float *)malloc(bigbufsize  * dz->bufcnt)) == NULL) {
        sprintf(errstr,"INSUFFICIENT MEMORY to create sound buffers.\n");
        return(PROGRAM_ERROR);
    }
    for(n=0;n<dz->bufcnt;n++)
        dz->sbufptr[n] = dz->sampbuf[n] = dz->bigbuf + (dz->buflen * n);
    dz->sampbuf[n] = dz->bigbuf + (dz->buflen * n);
    return(FINISHED);
}

/*************************** BOUNCE_PARAM_PREPROCESS **************************/

int bounce_param_preprocess(dataptr dz)
{
    if(dz->param[BNC_MINDUR] > 0.0 && dz->param[BNC_MINDUR] < dz->application->default_val[BNC_MINDUR]) {
        sprintf(errstr,"MIN DURATION OF SHRUNK BOUNCED ELEMENT CANNOT BE LESS THAN %.3lf UNLESS SET TO ZERO (SWITCHES OFF SHRINKAGE)\n",BOUNCEMINDUR);
        return DATA_ERROR;
    }
        return FINISHED;
}

/*************************** NORMALISATION_FADE **************************/

int normalisation_fade(int fadelen, int *fadecnt, int start_of_buf, int absfadestt, double normdrop, dataptr dz)
{
    int fadestt, fadeend, n;
    double thisdrop, thislevl;
    float *obuf = dz->sampbuf[1];
    int fcnt = *fadecnt;
                                                        //  if buffer ends after firstbounce-starts (where fade starts)
    if((dz->total_samps_read > absfadestt) && (fcnt < fadelen)) {   
        fcnt = *fadecnt;                                //  && not et at end of fade (fcnt < fadelen)
        fadestt = absfadestt - start_of_buf;            //  Start of fade relative to start of buffer
        fadestt = max(0,fadestt);                       //  but not before start of buffer.
        fadeend = fadelen - fcnt;                       //  Remaining length of fade
        fadeend += fadestt;                             //  End of fade relative to current fade start
        fadeend = min(fadeend,dz->buflen);              //  but not beyond end of buffer
        for(n=fadestt;n<fadeend;n++) {                  //  increment through the total drop in level required
            thisdrop = normdrop * (double)fcnt/(double)fadelen;
            thislevl = 1.0 - thisdrop;                  //  Actual level is 1.0 minus current level-drop
            obuf[n] = (float)(obuf[n] * thislevl);      //  set level required
            fcnt++;                                     //  and count where we are in fade
        }
        *fadecnt = fcnt;
    }
    return FINISHED;
}

/**************************************** HANDLE_BUFFER_OUTPUT ********************************/

int handle_buffer_output(int passno,double *maxsamp,int *maxpos,int fadelen,int *fadecnt,int *start_of_buf,int bnc1len,double normdrop,int samps_to_write,int *opos,dataptr dz)
{
    int exit_status;
    double absval;
    int n;
    float *obuf = dz->sampbuf[1], *ovflwbuf = dz->sampbuf[2];
    if(passno == 0) {
        for(n=0;n<dz->buflen;n++) {
            absval = fabs(obuf[n]);
            if(absval > *maxsamp) {
                *maxsamp = absval;
                *maxpos = *start_of_buf + n;
            }
        }
        if(sloom) {
            dz->total_samps_written += dz->buflen;
            dz->process = GREV;
            display_virtual_time(dz->total_samps_written,dz);
            dz->process = BOUNCE;
        }
    } else {
        if(fadelen)                                         //  If normalisation required, do normalisation fade
            normalisation_fade(fadelen,fadecnt,*start_of_buf,bnc1len,normdrop,dz);
        dz->process = GREV;                                 //  then write to output    
        if((exit_status = write_samps(obuf,samps_to_write,dz))<0)       
            return(exit_status);
        dz->process = BOUNCE;
    }
    memcpy((char *)obuf,(char *)ovflwbuf,dz->buflen * sizeof(float));
    memset((char *)ovflwbuf,0,dz->buflen * sizeof(float));
    *opos -= dz->buflen;
    *start_of_buf += dz->buflen;
    return FINISHED;
}