#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef unix #define round(x) lround((x)) #endif #ifndef HUGE #define HUGE 3.40282347e+38F #endif #define CASC_SPLICELEN (5) // mS default splicelen #define MINECHO (0.01) // -40dB, quietest echo heard #define CASPANCURVE (0.4) // Causes pan to be faster at start #define ROOT2 (1.4142136) #define CAS_MAXLEVEL (0.95) #define alternating is_rectified #define spreading is_mapping #define echomax rampbrksize #define max_shredcnt total_windows 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 setup_cascade_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_cascade_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 get_the_mode_from_cmdline(char *str,dataptr dz); static int setup_and_init_input_brktable_constants(dataptr dz,int brkcnt); static int handle_the_special_data(char *str,double *clipmin,dataptr dz); static void pancalc(double position,double *leftgain,double *rightgain); static int get_the_mode_from_cmdline(char *str,dataptr dz); static int create_cascade_sndbufs(int clipmax,dataptr dz); static int cascade_params_preprocess(int *clipmax,double *clipmin,int *is_shred,int *max_shredno,dataptr dz); static void initialise_cascade_random_sequence(int seed); static void do_shredding(int *shredcnt,int *csscnt,int passno,int cliplen,int spliclen,int max_shredno,dataptr dz); static void permute_chunks(dataptr dz); static void insert(int n,int t,dataptr dz); static void prefix(int n,dataptr dz); static void shuflup(int k,dataptr dz); static int cascade(double clipmin,int clipmax,int is_shred,int max_shredno,dataptr dz); /**************************************** MAIN *********************************************/ int main(int argc,char *argv[]) { int exit_status; dataptr dz = NULL; char **cmdline; int cmdlinecnt, is_shred = 0, max_shredno = 0; int n, clipmax; double clipmin = 0.0; 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); } dz->itemcnt = 0; 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((exit_status = get_the_process_no(argv[0],dz))<0) { print_messages_and_close_sndfiles(exit_status,is_launched,dz); return(FAILED); } cmdline++; cmdlinecnt--; dz->maxmode = 10; 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_cascade_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_cascade_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 if((dz->lparray = (int **)malloc(5 * sizeof(int *)))==NULL) { // Arrays for input cut times, and shred-cut times sprintf(errstr,"INSUFFICIENT MEMORY to create \"int\" arrays.\n"); // and for remembering randomised vals, for use in 2nd pass return(MEMORY_ERROR); // (to ensure output level does not change). } if(dz->mode >= 5) { if((exit_status = handle_the_special_data(cmdline[0],&clipmin,dz))<0) { print_messages_and_close_sndfiles(exit_status,is_launched,dz); return(FAILED); } cmdlinecnt--; cmdline++; } 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() redundant is_launched = TRUE; dz->bufcnt = 6; 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 bufcnt; n++) dz->sampbuf[n] = dz->sbufptr[n] = (float *)0; dz->sampbuf[n] = (float *)0; //param_preprocess() if((exit_status = cascade_params_preprocess(&clipmax,&clipmin,&is_shred,&max_shredno,dz))<0) { print_messages_and_close_sndfiles(exit_status,is_launched,dz); return(FAILED); } if((exit_status = create_cascade_sndbufs(clipmax,dz))<0) { print_messages_and_close_sndfiles(exit_status,is_launched,dz); return(FAILED); } //spec_process_file = if((exit_status = cascade(clipmin,clipmax,is_shred,max_shredno,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 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); switch(dz->mode) { case(0): case(5): dz->outfile->channels = dz->infile->channels; break; case(1): case(2): case(6): case(7): dz->infile->channels = 2; // Mono in, stereo out dz->outfile->channels = 2; break; case(3): case(4): case(8): case(9): dz->infile->channels = 8; // Mono in, 8-chan out dz->outfile->channels = 8; break; } if((exit_status = create_sized_outfile(dz->outfilename,dz))<0) return(exit_status); switch(dz->mode) { case(0): case(5): break; // input channels = output channels default: dz->infile->channels = 1; // Mono in break; } (*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;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_CASCADE_APPLICATION *******************/ int setup_cascade_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 < 5) { if((exit_status = set_param_data(ap,0 ,3,3,"DID"))<0) return(FAILED); } else { if((exit_status = set_param_data(ap,CASCLIPS,3,1,"0I0"))<0) return(FAILED); } if((exit_status = set_vflgs(ap,"ersNC",5,"IDiII","aln",3,0,"000"))<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(!(dz->mode == 0 || dz->mode == 5) && infile_info->channels != 1) { sprintf(errstr,"File %s is not of correct type for Mode %d\n",cmdline[0],dz->mode+1); return(DATA_ERROR); } 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_CASCADE_PARAM_RANGES_AND_DEFAULTS *******************/ int setup_cascade_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() if(dz->mode < 5) { ap->lo[CAS_CLIP] = 0.005; ap->hi[CAS_CLIP] = 60.0; ap->default_val[CAS_CLIP] = .5; ap->lo[CAS_MAXCLIP] = 0; ap->hi[CAS_MAXCLIP] = 60.0; } ap->lo[CAS_ECHO] = 1; ap->hi[CAS_ECHO] = 64; ap->default_val[CAS_ECHO] = 8; ap->default_val[CAS_MAXCLIP] = 0; ap->lo[CAS_MAXECHO] = 0; ap->hi[CAS_MAXECHO] = 64; ap->default_val[CAS_MAXECHO] = 0; ap->lo[CAS_RAND] = 0; ap->hi[CAS_RAND] = 1; ap->default_val[CAS_RAND] = 0; ap->lo[CAS_SEED] = 0; ap->hi[CAS_SEED] = 64; ap->default_val[CAS_SEED] = 1; ap->lo[CAS_SHREDNO] = 0; ap->hi[CAS_SHREDNO] = 64; ap->default_val[CAS_SHREDNO] = 0; ap->lo[CAS_SHREDCNT] = 0; ap->hi[CAS_SHREDCNT] = 64; ap->default_val[CAS_SHREDCNT] = 0; dz->maxmode = 10; 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_cascade_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("cascade"); return(USAGE_ONLY); } /********************************************************************************************/ int get_the_process_no(char *prog_identifier_from_cmdline,dataptr dz) { if(!strcmp(prog_identifier_from_cmdline,"cascade")) dz->process = CASCADE; 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,"cascade")) { fprintf(stdout, "USAGE: cascade cascade 1-5 inf outf clipsize echos clipmax [-eechosmax] \n" "OR: cascade cascade 6-10 inf outf cuts echos [-eechosmax]\n" "\n" "AND: [-rrand] [-sseed] [-Nshredno -Cshredcnt -a] [-l] [-n]\n" "\n" "Successive segments of src are repeat-echoed, and echosets superimposed on src.\n" "\n" "Modes\n" "1,6: N-channels in -> N channels out: Every echo in same N-channels.\n" "2,7: Mono (left in output) ->stereo: Echosets pan to right.\n" "3,8: Mono (centre in output)->stereo: Echosets pan alternately to L and R.\n" "4,9: Mono (ch1 in output) -> 8chan: Every echo steps R, to next channel.\n" "5,10: Mono (ch1 in outout) -> 8chan: Echos of 1st echoset step R,next set step L,etc.\n" "\n" "CLIPSIZE (Modes 1-5) Duration of segments to echo. Time-variable.\n" "or (Range .005 to 60 secs)\n" "CUTS (Modes 6-10) Textfile of (successive) src cut-times, creating segs to echo.\n" "\n" "ECHOS Number of echos. Time-variable. (Range 1 to 64)\n" "\n" "CLIPMAX Max duration of clips (time-variable). \"CLIPSIZE\" now read as minimum.\n" " Actual clipsize is a random val between \"clipsize\" and \"clipmax\".\n" " If \"clipmax\" is set to zero, it is ignored.\n" "\n" "ECHOSMAX Max number of echos (time-variable). \"ECHOS\" now read as minimum.\n" " Actual number of echos is a random val between \"echos\" and \"echosmax\".\n" " If \"echosmax\" is set to zero, it is ignored.\n" "\n" "RAND Randomise timesteps between echos in echo-set: Range 0-1, time-variable.\n" "SEED With same non-zero value, randomised vals are exactly same on new pass.\n" "\n" "SHREDNO In each echo-stream, cut previous echo into \"shredno\" parts,\n" " and random-shuffle parts to make next echo. Range 2-16,time-variable.\n" "SHREDCNT No of shreds to do, to create next echo element. Range 1-16,time-variable.\n" " BOTH \"shredno\" and \"shredcnt\" must be set for shredding to take place.\n" "-a Also shred original clip. Only valid if \"shredno\" & \"shredcnt\" set.\n" "\n" "-l Echos decay linearly in level (default, log decay - initial decays faster).\n" "-n If output low, normalise it. (high output is normalised by default).\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); } /******************************** CASCADE ********************************/ int cascade(double clipmin,int clipmax,int is_shred,int max_shredno,dataptr dz) { int exit_status, clipcnt, inchans, outchans, passno, panright, thischan; double thistime, atten, level, splicatten = -1.0, leftgain, rightgain, maxsamp, diff, pan, panfactor, normaliser = 0.0, srate, offset; int readsamps = 0, totalsamps = 0, totalabsamps, lastsamptime, ebufpos, obufpos, startobufpos, shredcnt, rcnt, csscnt; int outgrps, maxwrite, cliplen, rval, echocnt, samps_written, effective_cliplen, randrange, true_gp_ebufpos, true_gp_obufpos, offsetcnt, maxclips, e, n, m; int *cliparray = NULL, *clipstore = dz->lparray[3]; double *offsets; float *ibuf, *echobuf, *obuf, *ovflwbuf; int spliclen, splicendstt, minclip; maxclips = (int)ceil(dz->duration/clipmin) + 4; // Maximum possible number of clips cut from file (+4 for SAFETY) if((offsets = (double *)malloc((maxclips * dz->echomax) * sizeof(double)))==NULL) { sprintf(errstr,"INSUFFICIENT MEMORY to create offsets array. (2)\n"); return(MEMORY_ERROR); // Stores any random offset values, during passno 0, for use in pass 1 } if(is_shred && dz->iparam[CAS_SEED] == 0) // Shredding uses a rand process, which needs to be identical on the 2 passes dz->iparam[CAS_SEED] = 2; // SO if SEED has not been set (non-zero val) set a value now (2 : arbitrary) dz->tempsize = (dz->insams[0]/dz->infile->channels) * dz->outfile->channels; ibuf = dz->sampbuf[0]; echobuf = dz->sampbuf[3]; obuf = dz->sampbuf[4]; ovflwbuf = dz->sampbuf[5]; inchans = dz->infile->channels; outchans = dz->outfile->channels; srate = (double)dz->infile->srate; spliclen = (int)round(CASC_SPLICELEN * MS_TO_SECS * srate); minclip = spliclen * 2 * inchans; if(dz->mode >= 5) cliparray = dz->lparray[0]; for(passno = 0; passno < 2; passno++) { display_virtual_time(0,dz); initialise_cascade_random_sequence(dz->iparam[CAS_SEED]); switch(passno) { case(0): fprintf(stdout,"INFO: Checking level.\n"); break; case(1): fprintf(stdout,"INFO: Generating output.\n"); break; } fflush(stdout); memset((char *)obuf,0,dz->buflen2 * 2 * sizeof(float)); // Empty obuf and ovflwbuf sndseekEx(dz->ifd[0],0,0); panright = 1; // default to pan to right clipcnt = 0; thistime = 0.0; lastsamptime = 0; totalabsamps = 0; obufpos = 0; maxsamp = 0.0; maxwrite = 0; offsetcnt = 0; true_gp_obufpos = 0; // unrandomised position in obuf, in grp-samples dz->total_samps_written = 0; shredcnt = 1; rcnt = 0; // Count randomised values of echocnt and cliplen csscnt = 0; // Count randomised values of chunk scatter for(;;) { if(dz->mode >= 5) { totalsamps = cliparray[clipcnt]; // counted in groups cliplen = totalsamps - lastsamptime; lastsamptime = totalsamps; } else { if((exit_status = read_values_from_all_existing_brktables(thistime,dz))<0) return exit_status; dz->iparam[CAS_CLIP] = (int)round(dz->param[CAS_CLIP] * dz->infile->srate); if(dz->param[CAS_MAXCLIP] == 0.0) { cliplen = dz->iparam[CAS_CLIP]; } else { if(passno == 0) { dz->iparam[CAS_MAXCLIP] = (int)round(dz->param[CAS_MAXCLIP] * dz->infile->srate); diff = dz->iparam[CAS_MAXCLIP] - dz->iparam[CAS_CLIP]; rval = (int)floor(drand48() * diff); cliplen = dz->iparam[CAS_CLIP] + rval; clipstore[rcnt++] = cliplen; } else cliplen = clipstore[rcnt++]; } } if(clipcnt > 0) { // After 1st clip, we baktrak by splicelen, to overlap with previous clip. totalabsamps -= spliclen * dz->infile->channels; // So totalabssamps (position in infile) baktraks by splicelen cliplen += spliclen; // and clip extended by spliclen } readsamps = cliplen * dz->infile->channels; clipcnt++; totalabsamps += readsamps; if(dz->iparam[CAS_MAXECHO] == 0) echocnt = dz->iparam[CAS_ECHO]; else { if(passno == 0) { diff = dz->iparam[CAS_MAXECHO] - dz->iparam[CAS_ECHO]; rval = (int)floor(drand48() * diff); echocnt = dz->iparam[CAS_ECHO] + rval; clipstore[rcnt++] = (int)echocnt; } else echocnt = (int)clipstore[rcnt++]; } memset((char *)ibuf,0,dz->buflen * sizeof(float)); if((exit_status = read_samps(ibuf,dz))<0) // Read samples at appropriate place return(exit_status); if(dz->ssampsread <= minclip) break; if(dz->ssampsread < readsamps) { // If insufficient samples to make the specified clip, shorten the clip totalabsamps -= readsamps; readsamps = dz->ssampsread; cliplen = readsamps/dz->infile->channels; totalabsamps += readsamps; } effective_cliplen = cliplen - spliclen; randrange = effective_cliplen - 1; // Range for possible random change of echo entry-time, in grp-samples. if(dz->vflag[CAS_LINEAR]) atten = (1.0 - MINECHO)/(double)echocnt; else atten = pow(MINECHO,1.0/(double)echocnt); // Caluclate attenuation-at-each-echo to produce final echo level of MINECHO level = 1.0; ebufpos = 0; // Sample position in echobuf true_gp_ebufpos = 0; // unrandomised position in echobuf, in grp-samples startobufpos = obufpos; memset((char *)echobuf,0,dz->buflen2 * sizeof(float)); // Clear echobuf splicendstt = cliplen - spliclen; // Start of endsplice, counted in group-samples. if(is_shred && dz->vflag[CAS_SHREDSRC]) // If source is to be shredded, do it do_shredding(&shredcnt,&csscnt,passno,cliplen,spliclen,max_shredno,dz); switch(dz->mode) { case(0): // In simple echos (no motion, but possibly multichan : mode 0) case(1): // or mono into stereo case(2): case(5): case(6): case(7): for(e=0;e <= echocnt; e++) { // For original source and all echos for(n=0;n < cliplen; n++) { // Copy the input clip to output if(n < spliclen) // Splicing start and end when appropriate splicatten = (double)n/(double)spliclen; else if(n >= splicendstt) splicatten = (double)(cliplen - n - 1)/(double)spliclen; else splicatten = 1.0; for(m = 0; m < inchans; m++) { echobuf[ebufpos] = (float)(echobuf[ebufpos] + (ibuf[(n * inchans) + m] * level * splicatten)); ebufpos++; } } if(is_shred) do_shredding(&shredcnt,&csscnt,passno,cliplen,spliclen,max_shredno,dz); if((dz->param[CAS_RAND] > 0) && (e < echocnt)) {// Last echo must be NOT random-shifted true_gp_ebufpos += cliplen; // to ensure complete set of echos fits within alotted buffer space if(e < echocnt - 1) { if(passno == 0) { //HEREH STORE e offset = (drand48() * 2.0) - 1.0; // Range -1 to 1 offsets[offsetcnt++] = offset; } else offset = offsets[offsetcnt++]; offset *= dz->param[CAS_RAND]; // Range +- randparam val offset *= randrange; // Range +- within size of permissible shift ebufpos = true_gp_ebufpos + (int)floor(offset); } else ebufpos = true_gp_ebufpos; // Last echo always in unrandomised place place ebufpos *= inchans; // Change to total (ungrouped) sample count } ebufpos -= spliclen * inchans; // Baktrak (splices echos together if not time-randomised) if(dz->vflag[CAS_LINEAR]) level -= atten; else level *= atten; // And attenuate from echo to echo } ebufpos += spliclen * inchans; // Advance to end of echo-output, ready for outputting data break; default: // FOR MONO TO MULTICHANNEL for(e=0;e <= echocnt; e++) { // For original source and all echos for(n=0;n < cliplen; n++) { // Copy the input clip to output if(ebufpos < spliclen) // Splicing start and end when appropriate splicatten = (double)n/(double)spliclen; else if(ebufpos >= splicendstt) splicatten = (double)(cliplen - n - 1)/(double)spliclen; else splicatten = 1.0; // Here source is alwats mono echobuf[ebufpos++] = (float)(ibuf[n] * level * splicatten); } for(n=0; n < ebufpos; n++) { // Copy each echo of the clip into output buffer AT THIS STAGE obuf[obufpos] = (float)(obuf[obufpos] + echobuf[n]); obufpos += outchans; // advance to next corresponding channel's sample } maxwrite = max(maxwrite,obufpos); // Check maxwrite at each pass, as obufpos may backtrack (see next lines) if(is_shred) do_shredding(&shredcnt,&csscnt,passno,cliplen,spliclen,max_shredno,dz); if(dz->param[CAS_RAND] > 0) { thischan = obufpos % 8; true_gp_obufpos += cliplen - spliclen; if(e < echocnt - 1) { if(passno == 0) { //HEREH STORE e offset = (drand48() * 2.0) - 1.0; // Range -1 to 1 offsets[offsetcnt++] = offset; } else offset = offsets[offsetcnt++]; offset *= dz->param[CAS_RAND]; // Range +- randparam val offset *= randrange; // Range +- within size of permissible shift obufpos = true_gp_obufpos + (int)floor(offset); } else // penultimate echo fixes final echo to be in unrandomised position obufpos = true_gp_obufpos; // Last echo always in unrandomised place place obufpos *= outchans; // Change to total (ungrouped) sample count obufpos += thischan; // Offset to existing channel } if(e < echocnt) { if(panright > 0) obufpos++; // Move to next output chan for next echo else obufpos--; // Move to previous output chan for next echo } memset((char *)echobuf,0,dz->buflen2 * sizeof(float)); if(dz->vflag[CAS_LINEAR]) level -= atten; else level *= atten; // And attenuate from echo to echo ebufpos = 0; // Reset echobuffer for next echo } if(dz->alternating) // In alternating modes, swap between clockwise and anticlockwise motion panright = -panright; outgrps = maxwrite/outchans; // Round up maxwrite to a whole (multichan) set of samples if(outgrps * outchans < maxwrite) outgrps++; maxwrite = outgrps * outchans; break; } // For Mode 0 and stereo-output modes, now write to output buffer switch(dz->mode) { case(0): case(5): for(n=0; n < ebufpos; n++) { // Copy echoed clip into output buffer obuf[obufpos] = (float)(obuf[obufpos] + echobuf[n]); obufpos++; } maxwrite = max(maxwrite,obufpos); outgrps = maxwrite/outchans; // Round up maxwrite to a whole (multichan) set of samples if(outgrps * outchans < maxwrite) outgrps++; maxwrite = outgrps * outchans; break; case(1): // Mono source --> Stereo case(2): case(6): case(7): panfactor = (double)(ebufpos - 1); for(n=0; n < ebufpos; n++) { // Copy echoed clip into output buffer, panning left to right pan = (double)n/panfactor; // Pan position in range 0 to 1 pan = pow(pan,CASPANCURVE); // Bias the pan to be faster at start if(dz->spreading) pan = (pan * 2.0) - 1.0; // Pan position in range -1 to 1 left to right) else if(panright < 0) pan *= -1.0; // Pan position in range 0 to -1 centre to left) else ; // Pan position in range 0 to 1 centre to right) pancalc(pan,&leftgain,&rightgain); obuf[obufpos] = (float)(obuf[obufpos] + (echobuf[n] * leftgain)); obufpos++; obuf[obufpos] = (float)(obuf[obufpos] + (echobuf[n] * rightgain)); obufpos++; } maxwrite = max(maxwrite,obufpos); outgrps = maxwrite/outchans; // Round up maxwrite to a whole (multichan) set of samples if(outgrps * outchans < maxwrite) outgrps++; maxwrite = outgrps * outchans; if(dz->alternating) panright = -panright; // Alternating modes : alternate pans to left and right) break; } // MOVE TO WRITE POSITION FOR NEXT SET-OF-ECHOS // Move write-position for next set-of-echos, baktraking by a splicelen obufpos = startobufpos + ((cliplen - spliclen) * outchans); true_gp_obufpos = obufpos/outchans; if(obufpos >= dz->buflen2) { // and if beyond end of obuf, do write if(passno == 0) { for(n=0;n < dz->buflen2;n++) maxsamp = max(maxsamp,fabs(obuf[n])); } else { for(n=0;n < dz->buflen2;n++) obuf[n] = (float)(obuf[n] * normaliser); if((samps_written = fputfbufEx(obuf,dz->buflen2,dz->ofd))<=0) { sprintf(errstr,"Can't write to output soundfile: %s\n",sferrstr()); return(SYSTEM_ERROR); } dz->total_samps_written += samps_written; } // then copy back any overflow dz->process = GREV; // Force correct display of progress_bar in Loom display_virtual_time(totalabsamps,dz); dz->process = CASCADE; memset((char *)obuf,0,dz->buflen2 * sizeof(float)); memcpy((char *)obuf,(char *)ovflwbuf,dz->buflen2 * sizeof(float)); memset((char *)ovflwbuf,0,dz->buflen2 * sizeof(float)); obufpos -= dz->buflen2; true_gp_obufpos -= dz->buflen2/outchans; maxwrite -= dz->buflen2; } if(totalabsamps >= dz->insams[0]) break; sndseekEx(dz->ifd[0],totalabsamps,0); } if(maxwrite > 0) { if(passno == 0) { for(n=0;n < maxwrite;n++) maxsamp = max(maxsamp,fabs(obuf[n])); } else { for(n=0;n < maxwrite;n++) obuf[n] = (float)(obuf[n] * normaliser); if((samps_written = fputfbufEx(obuf,maxwrite,dz->ofd))<=0) { // Write remaining samps sprintf(errstr,"Can't write to output soundfile: %s\n",sferrstr()); return(SYSTEM_ERROR); } dz->total_samps_written += samps_written; } dz->process = GREV; display_virtual_time(totalabsamps,dz); dz->process = CASCADE; } if(passno == 0) { if(flteq(maxsamp,0.0)) { sprintf(errstr,"No significant signal in output.\n"); return(PROGRAM_ERROR); } if(dz->vflag[CAS_UPNORMAL]) normaliser = CAS_MAXLEVEL/maxsamp; else { normaliser = 1.0; if(maxsamp > CAS_MAXLEVEL) normaliser = CAS_MAXLEVEL/maxsamp; } } } return FINISHED; } /******************************** CASCADE_PARAMS_PREPROCESS ********************************/ int cascade_params_preprocess(int *clipmax,double *clipmin,int *is_shred,int *max_shredno,dataptr dz) { int exit_status; double thisclipmax, thisclipmin = 0.0, thisclipmaxmin, maxecho, this_echomin, this_echomax, this_shredno; double effective_clipmin, mincliplen, srate = (double)dz->infile->srate; int this_clipmax, n, thiscut, lastclip, spliclen, min_shredcnt, min_shredno, arraysize; int *cliparray = NULL; if(dz->param[CAS_MAXECHO] == 0) dz->brksize[CAS_MAXECHO] = 0; if(dz->mode >= 5) { dz->param[CAS_MAXCLIP] = 0.0; dz->brksize[CAS_MAXCLIP] = 0; dz->param[CAS_CLIP] = 0.0; dz->brksize[CAS_CLIP] = 0; cliparray = dz->lparray[0]; *clipmax = 0; lastclip = 0; for(n=0;n < dz->itemcnt;n++) { thiscut = cliparray[n] - lastclip; *clipmax = max(*clipmax,thiscut); lastclip = cliparray[n]; } } else { if(dz->param[CAS_MAXCLIP] == 0) dz->brksize[CAS_MAXCLIP] = 0; if(dz->brksize[CAS_CLIP]) { if((exit_status = get_maxvalue_in_brktable(&thisclipmax,CAS_CLIP,dz))<0) return exit_status; *clipmax = (int)ceil(thisclipmax * srate); if((exit_status = get_minvalue_in_brktable(&thisclipmin,CAS_CLIP,dz))<0) return exit_status; } else { thisclipmin = dz->param[CAS_CLIP]; dz->iparam[CAS_CLIP] = (int)round(dz->param[CAS_CLIP] * srate); *clipmax = dz->iparam[CAS_CLIP]; } if(dz->brksize[CAS_MAXCLIP]) { if((exit_status = get_minvalue_in_brktable(&thisclipmaxmin,CAS_MAXCLIP,dz))<0) return exit_status; if(thisclipmaxmin < dz->application->lo[CAS_CLIP]) { sprintf(errstr,"Brktable for clipmax contains invalid value(s) (below %lf secs)\n",dz->application->lo[CAS_CLIP]); return DATA_ERROR; } thisclipmin = min(thisclipmin,thisclipmaxmin); if((exit_status = get_maxvalue_in_brktable(&thisclipmax,CAS_MAXCLIP,dz))<0) return exit_status; this_clipmax = (int)ceil(thisclipmax * srate); *clipmax = max(*clipmax,this_clipmax); } else if (dz->param[CAS_MAXCLIP] > 0) { if (dz->param[CAS_MAXCLIP] < dz->application->lo[CAS_CLIP]) { sprintf(errstr,"Clipmax value (%lf) invalid (below %lf secs)\n",dz->param[CAS_MAXCLIP],dz->application->lo[CAS_CLIP]); return DATA_ERROR; } thisclipmin = min(thisclipmin,dz->param[CAS_MAXCLIP]); dz->iparam[CAS_MAXCLIP] = (int)ceil(dz->param[CAS_MAXCLIP] * srate);// Max Clip duration in grouped-samples *clipmax = max(*clipmax,dz->iparam[CAS_MAXCLIP]); } *clipmin = thisclipmin; effective_clipmin = *clipmin - (CASC_SPLICELEN * MS_TO_SECS); dz->itemcnt = (int)ceil(dz->duration/effective_clipmin) + 1; // Max possible number of clips } if(dz->brksize[CAS_ECHO]) { if((exit_status = get_maxvalue_in_brktable(&maxecho,CAS_ECHO,dz))<0) return exit_status; dz->echomax = (int)round(maxecho); } else dz->echomax = dz->iparam[CAS_ECHO]; // Max no of echos if(dz->brksize[CAS_MAXECHO]) { if((exit_status = get_minvalue_in_brktable(&this_echomin,CAS_MAXECHO,dz))<0) return exit_status; if((int)round(this_echomin) < (int)round(dz->application->lo[CAS_ECHO])) { sprintf(errstr,"Brktable for echomax contains invalid value (%d) (below %d)\n",(int)round(this_echomin),(int)round(dz->application->lo[CAS_ECHO])); return DATA_ERROR; } if((exit_status = get_maxvalue_in_brktable(&this_echomax,CAS_MAXECHO,dz))<0) return exit_status; dz->echomax = max(dz->echomax,(int)round(this_echomax)); } else if (dz->iparam[CAS_MAXECHO] > 0) { if ((int)round(dz->iparam[CAS_MAXECHO]) < (int)round(dz->application->lo[CAS_ECHO])) { sprintf(errstr,"Echomax value (%d) invalid (below %d)\n",(int)round(dz->iparam[CAS_MAXECHO]),(int)round(dz->application->lo[CAS_ECHO])); return DATA_ERROR; } dz->echomax = max(dz->echomax,dz->iparam[CAS_MAXECHO]); // Max no of echos } spliclen = (int)round(CASC_SPLICELEN * MS_TO_SECS * srate); *clipmax += spliclen; if(dz->brksize[CAS_SHREDCNT]) { if((exit_status = get_minvalue_in_brktable(&this_shredno,CAS_SHREDNO,dz))<0) return exit_status; min_shredcnt = (int)round(this_shredno); if(min_shredcnt < 1) { sprintf(errstr,"Invalid shred count (%d) in shred-count file. (Minimum 1).\n",min_shredcnt); return DATA_ERROR; } if((exit_status = get_maxvalue_in_brktable(&this_shredno,CAS_SHREDNO,dz))<0) return exit_status; dz->max_shredcnt = (int)round(this_shredno); } else { min_shredcnt = dz->iparam[CAS_SHREDCNT]; dz->max_shredcnt = dz->iparam[CAS_SHREDCNT]; } if(dz->brksize[CAS_SHREDNO]) { if((exit_status = get_minvalue_in_brktable(&this_shredno,CAS_SHREDNO,dz))<0) return exit_status; min_shredno = (int)round(this_shredno); if(min_shredno < 2) { sprintf(errstr,"Invalid shred number (%d) in shred-number file. (Minimum 2).\n",min_shredno); return DATA_ERROR; } if((exit_status = get_maxvalue_in_brktable(&this_shredno,CAS_SHREDNO,dz))<0) return exit_status; *max_shredno = (int)round(this_shredno); } else { *max_shredno = dz->iparam[CAS_SHREDNO]; min_shredno = dz->iparam[CAS_SHREDNO]; } if(((min_shredno == 0) && (min_shredcnt != 0)) || ((min_shredno != 0) && (min_shredcnt == 0))) { sprintf(errstr,"SHRED NUMBER and SHRED COUNT must both be set, or must both be zero.\n"); return DATA_ERROR; } if((*clipmin/(double)*max_shredno)/3.0 <= dz->application->lo[CAS_CLIP]) { // Shreds into shredno pieces, which can be up to 1/3 as short mincliplen = dz->application->lo[CAS_CLIP] * (double)*max_shredno * 3.0; sprintf(errstr,"With shred number of (up to) %d, shortest segment must be > %.3lf secs.\n",*max_shredno,mincliplen); return DATA_ERROR; } if(dz->vflag[CAS_SHREDSRC] && (min_shredno == 0 || min_shredcnt == 0)) { sprintf(errstr,"To shred the source, both \"shred number\" or \"shred count\" must be given.\n"); return DATA_ERROR; } if (min_shredno > 0) { *is_shred = 1; if((dz->lparray[1] = (int *)malloc((*max_shredno+1) * sizeof(int)))==NULL) { sprintf(errstr,"INSUFFICIENT MEMORY to create shred pointers array.\n"); return(MEMORY_ERROR); } if((dz->lparray[2] = (int *)malloc((*max_shredno) * sizeof(int)))==NULL) { sprintf(errstr,"INSUFFICIENT MEMORY to create shred lengths array.\n"); return(MEMORY_ERROR); } arraysize = dz->itemcnt * (dz->echomax + 1 + dz->vflag[CAS_SHREDSRC]) * dz->max_shredcnt + 4; // +4 = SAFETY if((dz->iparray = (int **)malloc(arraysize * sizeof(int *)))==NULL) { sprintf(errstr,"INSUFFICIENT MEMORY to create shred permutation array. (1)\n"); return(MEMORY_ERROR); } for(n = 0; n < arraysize;n++) { if((dz->iparray[n] = (int *)malloc((*max_shredno + 1) * sizeof(int)))==NULL) { sprintf(errstr,"INSUFFICIENT MEMORY to create shred permutation array. (2)\n"); return(MEMORY_ERROR); } } } if((dz->brksize[CAS_MAXCLIP] || dz->param[CAS_MAXCLIP] > 0) || (dz->brksize[CAS_MAXECHO] || dz->param[CAS_MAXECHO] > 0)) { if((dz->lparray[3] = (int *)malloc((dz->itemcnt+1) * 2 * sizeof(int)))==NULL) { sprintf(errstr,"INSUFFICIENT MEMORY to create randomised echocnt && cliplen arrays.\n"); return(MEMORY_ERROR); } } if(*is_shred) { // clips echos // shreds-per-echo // shred elements arraysize = dz->itemcnt * (dz->echomax + 1 + dz->vflag[CAS_SHREDSRC]) * dz->max_shredcnt * (*max_shredno) + 4; if((dz->lparray[4] = (int *)malloc(arraysize * sizeof(int)))==NULL) { sprintf(errstr,"INSUFFICIENT MEMORY to create array to store randomised shred values.\n"); return(MEMORY_ERROR); } } switch(dz->mode) { case(2): case(7): case(4): case(9): dz->alternating = 1; // stero : pan to right, to left, to right etc 8chan: rotate clock, anticlok, clok etc break; default: dz->alternating = 0; break; } switch(dz->mode) { case(1): case(6): dz->spreading = 1; break; default: dz->spreading = 0; break; } return FINISHED; } /******************************** CREATE_CASCADE_SNDBUFS ********************************/ int create_cascade_sndbufs(int clipmax,dataptr dz) { int bigbufsize, secsize; int framesize1 = F_SECSIZE * dz->infile->channels; int framesize2 = F_SECSIZE * dz->outfile->channels; if(dz->sbufptr == 0 || dz->sampbuf == 0) { sprintf(errstr,"buffer pointers not allocated: create_sndbufs()\n"); return(PROGRAM_ERROR); } dz->buflen = clipmax * dz->infile->channels; if(dz->buflen < 0) { sprintf(errstr,"INSUFFICIENT MEMORY to create input sound buffers. (1)\n"); return(PROGRAM_ERROR); } secsize = dz->buflen/framesize1; if(secsize * framesize1 != dz->buflen) secsize++; dz->buflen = secsize * framesize1; if(dz->buflen < 0) { sprintf(errstr,"INSUFFICIENT MEMORY to create input sound buffers. (2)\n"); return(PROGRAM_ERROR); } dz->buflen2 = clipmax * (dz->echomax+1) * dz->outfile->channels; if(dz->buflen2 < 0) { sprintf(errstr,"INSUFFICIENT MEMORY to create output sound buffers. (1)\n"); return(PROGRAM_ERROR); } secsize = dz->buflen2/framesize2; if(secsize * framesize2 != dz->buflen2) secsize++; dz->buflen2 = secsize * framesize2; if(dz->buflen2 < 0) { sprintf(errstr,"INSUFFICIENT MEMORY to create output sound buffers. (2)\n"); return(PROGRAM_ERROR); } bigbufsize = ((3 * dz->buflen) + (3 * dz->buflen2)) * sizeof(float); if((dz->bigbuf = (float *)malloc(bigbufsize)) == NULL) { sprintf(errstr,"INSUFFICIENT MEMORY to create total sound buffers.\n"); return(PROGRAM_ERROR); } dz->sbufptr[0] = dz->sampbuf[0] = dz->bigbuf; // Inbuf dz->sbufptr[1] = dz->sampbuf[1] = dz->sampbuf[0] + dz->buflen; // Shredbuf dz->sbufptr[2] = dz->sampbuf[2] = dz->sampbuf[1] + dz->buflen; // Shredsplicebuf dz->sbufptr[3] = dz->sampbuf[3] = dz->sampbuf[2] + dz->buflen; // Calculation buf for echos dz->sbufptr[4] = dz->sampbuf[4] = dz->sampbuf[3] + dz->buflen2; // Outbuf dz->sbufptr[5] = dz->sampbuf[5] = dz->sampbuf[4] + dz->buflen2; // Overflowbuf dz->sampbuf[6] = dz->sampbuf[6] + dz->buflen2; return(FINISHED); } /****************************** 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); } /**************************** HANDLE_THE_SPECIAL_DATA ****************************/ int handle_the_special_data(char *str,double *clipmin,dataptr dz) { int n, cnt, firsttime = 1; int inlen = dz->insams[0]/dz->infile->channels; // Length of src file, in grouped samples FILE *fp; char temp[200], *p; double dummy = 0, cutlen = 0.0, lasttime, endcut, srate = (double)dz->infile->srate; double mincut = 2 * CASC_SPLICELEN * MS_TO_SECS; // Min length of segment to echo > 2 * splicelen int mincutgpsamps = (int)ceil(mincut * (double)dz->infile->srate); // and in grouped_samples int lastclipcut; if((fp = fopen(str,"r"))==NULL) { sprintf(errstr,"Cannot open file %s to read clip lengths.\n",str); return(DATA_ERROR); } cnt = 0; lasttime = 0; firsttime = 1; *clipmin = HUGE; while(fgets(temp,200,fp)!=NULL) { p = temp; while(isspace(*p)) p++; if(*p == ';' || *p == ENDOFSTR) // Allow comments in file continue; while(get_float_from_within_string(&p,&dummy)) { cutlen = dummy - lasttime; if(cutlen <= mincut) { if(firsttime) sprintf(errstr,"Invalid clip length between zero and first value (%lf) in file %s (must be greater than %lf seconds)\n",dummy,str,mincut); else sprintf(errstr,"Invalid clip length (%lf) between times (%lf & %lf) in file %s (must be greater than %lf seconds)\n",cutlen,lasttime,dummy,str,mincut); return(DATA_ERROR); } if(dummy <= dz->duration) // Look for minimum cutsize WITHIN the file to be cut *clipmin = min(*clipmin,cutlen); lasttime = dummy; firsttime = 0; cnt++; } } if(cnt < 2) { sprintf(errstr,"Must be more than 1 clip time value in file %s.\n",str); return(DATA_ERROR); } dz->itemcnt = cnt; endcut = dz->duration - dummy; // If data stops before file end, find remaining file segment (endcut is +ve if last cut before file end) if(endcut > mincut) // If endcut is negative, ignore. If <= mincut, gets joined into previous cut, making that larger than any previous minimum *clipmin = min(*clipmin,endcut); // If > mincut, treated as a separate cut, which could be smaller than current minimum if((dz->lparray[0] = (int *)malloc((dz->itemcnt + 1) * sizeof(int)))==NULL) { sprintf(errstr,"INSUFFICIENT MEMORY to create clip lengths array (2).\n"); return(MEMORY_ERROR); } cnt = 0; fseek(fp,0,0); while(fgets(temp,200,fp)!=NULL) { p = temp; while(isspace(*p)) p++; if(*p == ';' || *p == ENDOFSTR) // Allow comments in file continue; while(get_float_from_within_string(&p,&dummy)) dz->lparray[0][cnt++] = (int)round(dummy * srate); } for(n=0;n < dz->itemcnt;n++) { // Loose any data which is beyond end of infile if(dz->lparray[0][n] > inlen) { dz->itemcnt = n; break; } } if(dz->itemcnt <= 0) { sprintf(errstr,"No valid clip times in file %s.\n",str); return(MEMORY_ERROR); } dz->lparray[0][dz->itemcnt] = inlen; // Add end-of-file as last cutpoint lastclipcut = dz->lparray[0][dz->itemcnt] - dz->lparray[0][dz->itemcnt - 1]; if(lastclipcut < mincutgpsamps) // If final clip is too small, eliminate it dz->lparray[0][dz->itemcnt-1] = inlen; else dz->itemcnt++; if(dz->itemcnt <= 1) { sprintf(errstr,"Less than 2 valid clip times in file %s.\n",str); return(MEMORY_ERROR); } return FINISHED; } /************************************ PANCALC *******************************/ void pancalc(double position,double *leftgain,double *rightgain) { int dirflag; double temp; double relpos; double reldist, invsquare; if(position < 0.0) dirflag = -1; /* signal to left */ else dirflag = 1; /* 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 < 0) { /* SIGNAL_TO_LEFT */ *leftgain = invsquare; *rightgain = 0.0; } else { /* SIGNAL_TO_RIGHT */ *rightgain = invsquare; *leftgain = 0; } } } /***************************** INITIALISE_CASCADE_RANDOM_SEQUENCE ***************************/ void initialise_cascade_random_sequence(int seed) { if(seed > 0) srand((int)seed); else initrand48(); } /************************** DO_SHREDDING *******************************/ void do_shredding(int *shredcnt,int *csscnt,int passno,int cliplen,int spliclen,int max_shredno,dataptr dz) { double this_scatter, val, newval; int n, m, i, k, j, inchans = dz->infile->channels; int chunkscat; int *chunkptr = dz->lparray[1], *chunklen = dz->lparray[2], *chunkscatstore = dz->lparray[4], shbufpos; int total_len, chnk_len; int rawlen = (int)round((double)cliplen/(double)dz->iparam[CAS_SHREDNO]); float *ibuf = dz->sampbuf[0], *shredbuf = dz->sampbuf[1], *shredsplicebuf = dz->sampbuf[2], *old_addr; int *permm = dz->iparray[0]; for(i = 0; i < dz->iparam[CAS_SHREDCNT]; i++) { // For the number of shreds required total_len = 0; chunkptr[0] = 0; for(n=1;niparam[CAS_SHREDNO];n++) { if(passno == 0) { this_scatter = 1.0 + (((drand48() * 2.0) - 1.0)/3.0); // Range 2/3 to 4/3 chunkscat = (int)(this_scatter * (double)rawlen); chunkscatstore[(*csscnt)++] = chunkscat; } else chunkscat = chunkscatstore[(*csscnt)++]; chunkptr[n] = total_len + chunkscat; // Randomised position of each chunk-boundary total_len += rawlen; // Unrandomised position of each chunk-boundary } chunkptr[n] = cliplen; for(n=0;niparam[CAS_SHREDNO];n++) chunklen[n] = chunkptr[n+1] - chunkptr[n]; // Find lengths of all chunks (*shredcnt)++; if(passno == 0) { permute_chunks(dz); // Permute order of chunks for(n=0;n < max_shredno;n++) dz->iparray[*shredcnt][n] = permm[n]; } else { for(n=0;n < max_shredno;n++) permm[n] = dz->iparray[*shredcnt][n]; } memset((char *)shredbuf,0,dz->buflen * sizeof(float)); memset((char *)shredsplicebuf,0,dz->buflen * sizeof(float)); shbufpos = 0; for(j=0;jiparam[CAS_SHREDNO];j++) { // For each permuted shred-element old_addr = &(ibuf[chunkptr[permm[j]] * inchans]); // Address of (permuted) chunk chnk_len = chunklen[permm[j]]; // Length of (permuted) chunk (in grouped-samples) // Copy into splicebuf memcpy((char *)shredsplicebuf,(char *)old_addr,(chnk_len * inchans) * sizeof(float)); for(n=0, m = chnk_len - 1;n < spliclen;n++,m--) { // Splice both ends val = (double)n/(double)spliclen; for(k=0;k < inchans;k++) { newval = shredsplicebuf[(n * inchans) + k]; newval *= val; shredsplicebuf[(n * inchans) + k] = (float)newval; newval = shredsplicebuf[(m * inchans) + k]; newval *= val; shredsplicebuf[(m * inchans) + k] = (float)newval; } } for(n=0;n < chnk_len * inchans;n++) // Copy each chunk into shredbuf shredbuf[shbufpos++] = shredsplicebuf[n]; memset((char *)shredsplicebuf,0,dz->buflen * sizeof(float)); } // Once all chunks assembled memset((char *)ibuf,0,dz->buflen * sizeof(float)); // Copy shredded source into source buf memcpy((char *)ibuf,(char *)shredbuf,(cliplen * inchans) * sizeof(float)); } } /*************************** PERMUTE_CHUNKS ***************************/ void permute_chunks(dataptr dz) { int n, t; for(n=0;niparam[CAS_SHREDNO];n++) { t = (int)(drand48() * (double)(n+1)); /* TRUNCATE */ if(t==n) prefix(n,dz); else insert(n,t,dz); } } /****************************** INSERT ****************************/ void insert(int n,int t,dataptr dz) { shuflup(t+1,dz); dz->iparray[0][t+1] = n; } /****************************** PREFIX ****************************/ void prefix(int n,dataptr dz) { shuflup(0,dz); dz->iparray[0][0] = n; } /****************************** SHUFLUP ****************************/ void shuflup(int k,dataptr dz) { int n; for(n = dz->iparam[CAS_SHREDNO] - 1; n > k; n--) dz->iparray[0][n] = dz->iparray[0][n-1]; }