/* * 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 * */ /* SYNTHESIS FROM RANDOM WALK THROUGH PITCH AND REAL SPACE */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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;nis_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;nmax_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;noption_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; ninternal_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;napplication->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;ndefault_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;nis_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;nbrk[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(¤t_pitch,current_time,dz))<0) return exit_status; if(dz->param[BRASTEP] > 0.0) { get_gain(¤t_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(¤t_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;nevsamps;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;nevsamps;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; }