diff options
Diffstat (limited to 'tran/resoncv.c')
| -rw-r--r-- | tran/resoncv.c | 600 |
1 files changed, 600 insertions, 0 deletions
diff --git a/tran/resoncv.c b/tran/resoncv.c new file mode 100644 index 0000000..77a8eb4 --- /dev/null +++ b/tran/resoncv.c @@ -0,0 +1,600 @@ +#include "stdio.h" +#ifndef mips +#include "stdlib.h" +#endif +#include "xlisp.h" +#include "sound.h" + +#include "falloc.h" +#include "cext.h" +#include "resoncv.h" + +void resoncv_free(); + + +typedef struct resoncv_susp_struct { + snd_susp_node susp; + boolean started; + long terminate_cnt; + boolean logically_stopped; + sound_type s1; + long s1_cnt; + sample_block_values_type s1_ptr; + sound_type bw; + long bw_cnt; + sample_block_values_type bw_ptr; + + /* support for interpolation of bw */ + sample_type bw_x1_sample; + double bw_pHaSe; + double bw_pHaSe_iNcR; + + /* support for ramp between samples of bw */ + double output_per_bw; + long bw_n; + + double scale1; + double c3co; + double coshz; + double c2; + double c1; + int normalization; + double y1; + double y2; +} resoncv_susp_node, *resoncv_susp_type; + + +void resoncv_ns_fetch(register resoncv_susp_type susp, snd_list_type snd_list) +{ + int cnt = 0; /* how many samples computed */ + int togo; + int n; + sample_block_type out; + register sample_block_values_type out_ptr; + + register sample_block_values_type out_ptr_reg; + + register double scale1_reg; + register double c3co_reg; + register double coshz_reg; + register double c2_reg; + register double c1_reg; + register int normalization_reg; + register double y1_reg; + register double y2_reg; + register sample_type bw_scale_reg = susp->bw->scale; + register sample_block_values_type bw_ptr_reg; + register sample_block_values_type s1_ptr_reg; + falloc_sample_block(out, "resoncv_ns_fetch"); + out_ptr = out->samples; + snd_list->block = out; + + while (cnt < max_sample_block_len) { /* outer loop */ + /* first compute how many samples to generate in inner loop: */ + /* don't overflow the output sample block: */ + togo = max_sample_block_len - cnt; + + /* don't run past the s1 input sample block: */ + susp_check_term_log_samples(s1, s1_ptr, s1_cnt); + togo = min(togo, susp->s1_cnt); + + /* don't run past the bw input sample block: */ + susp_check_term_samples(bw, bw_ptr, bw_cnt); + togo = min(togo, susp->bw_cnt); + + /* don't run past terminate time */ + if (susp->terminate_cnt != UNKNOWN && + susp->terminate_cnt <= susp->susp.current + cnt + togo) { + togo = susp->terminate_cnt - (susp->susp.current + cnt); + if (togo == 0) break; + } + + + /* don't run past logical stop time */ + if (!susp->logically_stopped && susp->susp.log_stop_cnt != UNKNOWN) { + int to_stop = susp->susp.log_stop_cnt - (susp->susp.current + cnt); + /* break if to_stop == 0 (we're at the logical stop) + * AND cnt > 0 (we're not at the beginning of the + * output block). + */ + if (to_stop < togo) { + if (to_stop == 0) { + if (cnt) { + togo = 0; + break; + } else /* keep togo as is: since cnt == 0, we + * can set the logical stop flag on this + * output block + */ + susp->logically_stopped = true; + } else /* limit togo so we can start a new + * block at the LST + */ + togo = to_stop; + } + } + + n = togo; + scale1_reg = susp->scale1; + c3co_reg = susp->c3co; + coshz_reg = susp->coshz; + c2_reg = susp->c2; + c1_reg = susp->c1; + normalization_reg = susp->normalization; + y1_reg = susp->y1; + y2_reg = susp->y2; + bw_ptr_reg = susp->bw_ptr; + s1_ptr_reg = susp->s1_ptr; + out_ptr_reg = out_ptr; + if (n) do { /* the inner sample computation loop */ + double c3p1; + double c3t4; + double omc3; + c3co_reg = exp((bw_scale_reg * *bw_ptr_reg++)); + c3p1 = c3co_reg + 1.0; + c3t4 = c3co_reg * 4.0; + omc3 = 1.0 - c3co_reg; + c2_reg = c3t4 * coshz_reg / c3p1; + c1_reg = (normalization_reg == 0 ? 1.0 : + (normalization_reg == 1 ? omc3 * sqrt(1.0 - c2_reg * c2_reg / c3t4) : + sqrt(c3p1 * c3p1 - c2_reg * c2_reg) * omc3 / c3p1)) * scale1_reg; +{ double y0 = c1_reg * *s1_ptr_reg++ + c2_reg * y1_reg - c3co_reg * y2_reg; + *out_ptr_reg++ = (sample_type) y0; + y2_reg = y1_reg; y1_reg = y0; }; + } while (--n); /* inner loop */ + + susp->y1 = y1_reg; + susp->y2 = y2_reg; + /* using bw_ptr_reg is a bad idea on RS/6000: */ + susp->bw_ptr += togo; + /* using s1_ptr_reg is a bad idea on RS/6000: */ + susp->s1_ptr += togo; + out_ptr += togo; + susp_took(s1_cnt, togo); + susp_took(bw_cnt, togo); + cnt += togo; + } /* outer loop */ + + /* test for termination */ + if (togo == 0 && cnt == 0) { + snd_list_terminate(snd_list); + } else { + snd_list->block_len = cnt; + susp->susp.current += cnt; + } + /* test for logical stop */ + if (susp->logically_stopped) { + snd_list->logically_stopped = true; + } else if (susp->susp.log_stop_cnt == susp->susp.current) { + susp->logically_stopped = true; + } +} /* resoncv_ns_fetch */ + + +void resoncv_ni_fetch(register resoncv_susp_type susp, snd_list_type snd_list) +{ + int cnt = 0; /* how many samples computed */ + int togo; + int n; + sample_block_type out; + register sample_block_values_type out_ptr; + + register sample_block_values_type out_ptr_reg; + + register double scale1_reg; + register double c3co_reg; + register double coshz_reg; + register double c2_reg; + register double c1_reg; + register int normalization_reg; + register double y1_reg; + register double y2_reg; + register double bw_pHaSe_iNcR_rEg = susp->bw_pHaSe_iNcR; + register double bw_pHaSe_ReG; + register sample_type bw_x1_sample_reg; + register sample_block_values_type s1_ptr_reg; + falloc_sample_block(out, "resoncv_ni_fetch"); + out_ptr = out->samples; + snd_list->block = out; + + /* make sure sounds are primed with first values */ + if (!susp->started) { + double c3p1; + double c3t4; + double omc3; + susp->started = true; + susp_check_term_samples(bw, bw_ptr, bw_cnt); + susp->bw_x1_sample = susp_fetch_sample(bw, bw_ptr, bw_cnt); + susp->c3co = exp(susp->bw_x1_sample); + c3p1 = susp->c3co + 1.0; + c3t4 = susp->c3co * 4.0; + omc3 = 1.0 - susp->c3co; + susp->c2 = c3t4 * susp->coshz / c3p1; + susp->c1 = (susp->normalization == 0 ? 1.0 : + (susp->normalization == 1 ? omc3 * sqrt(1.0 - susp->c2 * susp->c2 / c3t4) : + sqrt(c3p1 * c3p1 - susp->c2 * susp->c2) * omc3 / c3p1)) * susp->scale1; + } + + while (cnt < max_sample_block_len) { /* outer loop */ + /* first compute how many samples to generate in inner loop: */ + /* don't overflow the output sample block: */ + togo = max_sample_block_len - cnt; + + /* don't run past the s1 input sample block: */ + susp_check_term_log_samples(s1, s1_ptr, s1_cnt); + togo = min(togo, susp->s1_cnt); + + /* don't run past terminate time */ + if (susp->terminate_cnt != UNKNOWN && + susp->terminate_cnt <= susp->susp.current + cnt + togo) { + togo = susp->terminate_cnt - (susp->susp.current + cnt); + if (togo == 0) break; + } + + + /* don't run past logical stop time */ + if (!susp->logically_stopped && susp->susp.log_stop_cnt != UNKNOWN) { + int to_stop = susp->susp.log_stop_cnt - (susp->susp.current + cnt); + /* break if to_stop == 0 (we're at the logical stop) + * AND cnt > 0 (we're not at the beginning of the + * output block). + */ + if (to_stop < togo) { + if (to_stop == 0) { + if (cnt) { + togo = 0; + break; + } else /* keep togo as is: since cnt == 0, we + * can set the logical stop flag on this + * output block + */ + susp->logically_stopped = true; + } else /* limit togo so we can start a new + * block at the LST + */ + togo = to_stop; + } + } + + n = togo; + scale1_reg = susp->scale1; + c3co_reg = susp->c3co; + coshz_reg = susp->coshz; + c2_reg = susp->c2; + c1_reg = susp->c1; + normalization_reg = susp->normalization; + y1_reg = susp->y1; + y2_reg = susp->y2; + bw_pHaSe_ReG = susp->bw_pHaSe; + bw_x1_sample_reg = susp->bw_x1_sample; + s1_ptr_reg = susp->s1_ptr; + out_ptr_reg = out_ptr; + if (n) do { /* the inner sample computation loop */ + if (bw_pHaSe_ReG >= 1.0) { +/* fixup-depends bw */ + double c3p1; + double c3t4; + double omc3; + /* pick up next sample as bw_x1_sample: */ + susp->bw_ptr++; + susp_took(bw_cnt, 1); + bw_pHaSe_ReG -= 1.0; + susp_check_term_samples_break(bw, bw_ptr, bw_cnt, bw_x1_sample_reg); + bw_x1_sample_reg = susp_current_sample(bw, bw_ptr); + c3co_reg = susp->c3co = exp(bw_x1_sample_reg); + c3p1 = c3co_reg + 1.0; + c3t4 = c3co_reg * 4.0; + omc3 = 1.0 - c3co_reg; + c2_reg = susp->c2 = c3t4 * coshz_reg / c3p1; + c1_reg = susp->c1 = (normalization_reg == 0 ? 1.0 : + (normalization_reg == 1 ? omc3 * sqrt(1.0 - c2_reg * c2_reg / c3t4) : + sqrt(c3p1 * c3p1 - c2_reg * c2_reg) * omc3 / c3p1)) * scale1_reg; + } +{ double y0 = c1_reg * *s1_ptr_reg++ + c2_reg * y1_reg - c3co_reg * y2_reg; + *out_ptr_reg++ = (sample_type) y0; + y2_reg = y1_reg; y1_reg = y0; }; + bw_pHaSe_ReG += bw_pHaSe_iNcR_rEg; + } while (--n); /* inner loop */ + + togo -= n; + susp->y1 = y1_reg; + susp->y2 = y2_reg; + susp->bw_pHaSe = bw_pHaSe_ReG; + susp->bw_x1_sample = bw_x1_sample_reg; + /* using s1_ptr_reg is a bad idea on RS/6000: */ + susp->s1_ptr += togo; + out_ptr += togo; + susp_took(s1_cnt, togo); + cnt += togo; + } /* outer loop */ + + /* test for termination */ + if (togo == 0 && cnt == 0) { + snd_list_terminate(snd_list); + } else { + snd_list->block_len = cnt; + susp->susp.current += cnt; + } + /* test for logical stop */ + if (susp->logically_stopped) { + snd_list->logically_stopped = true; + } else if (susp->susp.log_stop_cnt == susp->susp.current) { + susp->logically_stopped = true; + } +} /* resoncv_ni_fetch */ + + +void resoncv_nr_fetch(register resoncv_susp_type susp, snd_list_type snd_list) +{ + int cnt = 0; /* how many samples computed */ + sample_type bw_val; + int togo; + int n; + sample_block_type out; + register sample_block_values_type out_ptr; + + register sample_block_values_type out_ptr_reg; + + register double scale1_reg; + register double c3co_reg; + register double coshz_reg; + register double c2_reg; + register double c1_reg; + register int normalization_reg; + register double y1_reg; + register double y2_reg; + register sample_block_values_type s1_ptr_reg; + falloc_sample_block(out, "resoncv_nr_fetch"); + out_ptr = out->samples; + snd_list->block = out; + + /* make sure sounds are primed with first values */ + if (!susp->started) { + susp->started = true; + susp->bw_pHaSe = 1.0; + } + + susp_check_term_samples(bw, bw_ptr, bw_cnt); + + while (cnt < max_sample_block_len) { /* outer loop */ + /* first compute how many samples to generate in inner loop: */ + /* don't overflow the output sample block: */ + togo = max_sample_block_len - cnt; + + /* don't run past the s1 input sample block: */ + susp_check_term_log_samples(s1, s1_ptr, s1_cnt); + togo = min(togo, susp->s1_cnt); + + /* grab next bw_x1_sample when phase goes past 1.0; */ + /* use bw_n (computed below) to avoid roundoff errors: */ + if (susp->bw_n <= 0) { + double c3p1; + double c3t4; + double omc3; + susp_check_term_samples(bw, bw_ptr, bw_cnt); + susp->bw_x1_sample = susp_fetch_sample(bw, bw_ptr, bw_cnt); + susp->bw_pHaSe -= 1.0; + /* bw_n gets number of samples before phase exceeds 1.0: */ + susp->bw_n = (long) ((1.0 - susp->bw_pHaSe) * + susp->output_per_bw); + susp->c3co = exp(susp->bw_x1_sample); + c3p1 = susp->c3co + 1.0; + c3t4 = susp->c3co * 4.0; + omc3 = 1.0 - susp->c3co; + susp->c2 = c3t4 * susp->coshz / c3p1; + susp->c1 = (susp->normalization == 0 ? 1.0 : + (susp->normalization == 1 ? omc3 * sqrt(1.0 - susp->c2 * susp->c2 / c3t4) : + sqrt(c3p1 * c3p1 - susp->c2 * susp->c2) * omc3 / c3p1)) * susp->scale1; + } + togo = min(togo, susp->bw_n); + bw_val = susp->bw_x1_sample; + /* don't run past terminate time */ + if (susp->terminate_cnt != UNKNOWN && + susp->terminate_cnt <= susp->susp.current + cnt + togo) { + togo = susp->terminate_cnt - (susp->susp.current + cnt); + if (togo == 0) break; + } + + + /* don't run past logical stop time */ + if (!susp->logically_stopped && susp->susp.log_stop_cnt != UNKNOWN) { + int to_stop = susp->susp.log_stop_cnt - (susp->susp.current + cnt); + /* break if to_stop == 0 (we're at the logical stop) + * AND cnt > 0 (we're not at the beginning of the + * output block). + */ + if (to_stop < togo) { + if (to_stop == 0) { + if (cnt) { + togo = 0; + break; + } else /* keep togo as is: since cnt == 0, we + * can set the logical stop flag on this + * output block + */ + susp->logically_stopped = true; + } else /* limit togo so we can start a new + * block at the LST + */ + togo = to_stop; + } + } + + n = togo; + scale1_reg = susp->scale1; + c3co_reg = susp->c3co; + coshz_reg = susp->coshz; + c2_reg = susp->c2; + c1_reg = susp->c1; + normalization_reg = susp->normalization; + y1_reg = susp->y1; + y2_reg = susp->y2; + s1_ptr_reg = susp->s1_ptr; + out_ptr_reg = out_ptr; + if (n) do { /* the inner sample computation loop */ +{ double y0 = c1_reg * *s1_ptr_reg++ + c2_reg * y1_reg - c3co_reg * y2_reg; + *out_ptr_reg++ = (sample_type) y0; + y2_reg = y1_reg; y1_reg = y0; }; + } while (--n); /* inner loop */ + + susp->y1 = y1_reg; + susp->y2 = y2_reg; + /* using s1_ptr_reg is a bad idea on RS/6000: */ + susp->s1_ptr += togo; + out_ptr += togo; + susp_took(s1_cnt, togo); + susp->bw_pHaSe += togo * susp->bw_pHaSe_iNcR; + susp->bw_n -= togo; + cnt += togo; + } /* outer loop */ + + /* test for termination */ + if (togo == 0 && cnt == 0) { + snd_list_terminate(snd_list); + } else { + snd_list->block_len = cnt; + susp->susp.current += cnt; + } + /* test for logical stop */ + if (susp->logically_stopped) { + snd_list->logically_stopped = true; + } else if (susp->susp.log_stop_cnt == susp->susp.current) { + susp->logically_stopped = true; + } +} /* resoncv_nr_fetch */ + + +void resoncv_toss_fetch(susp, snd_list) + register resoncv_susp_type susp; + snd_list_type snd_list; +{ + long final_count = susp->susp.toss_cnt; + time_type final_time = susp->susp.t0; + long n; + + /* fetch samples from s1 up to final_time for this block of zeros */ + while ((round((final_time - susp->s1->t0) * susp->s1->sr)) >= + susp->s1->current) + susp_get_samples(s1, s1_ptr, s1_cnt); + /* fetch samples from bw up to final_time for this block of zeros */ + while ((round((final_time - susp->bw->t0) * susp->bw->sr)) >= + susp->bw->current) + susp_get_samples(bw, bw_ptr, bw_cnt); + /* convert to normal processing when we hit final_count */ + /* we want each signal positioned at final_time */ + n = round((final_time - susp->s1->t0) * susp->s1->sr - + (susp->s1->current - susp->s1_cnt)); + susp->s1_ptr += n; + susp_took(s1_cnt, n); + n = round((final_time - susp->bw->t0) * susp->bw->sr - + (susp->bw->current - susp->bw_cnt)); + susp->bw_ptr += n; + susp_took(bw_cnt, n); + susp->susp.fetch = susp->susp.keep_fetch; + (*(susp->susp.fetch))(susp, snd_list); +} + + +void resoncv_mark(resoncv_susp_type susp) +{ + sound_xlmark(susp->s1); + sound_xlmark(susp->bw); +} + + +void resoncv_free(resoncv_susp_type susp) +{ + sound_unref(susp->s1); + sound_unref(susp->bw); + ffree_generic(susp, sizeof(resoncv_susp_node), "resoncv_free"); +} + + +void resoncv_print_tree(resoncv_susp_type susp, int n) +{ + indent(n); + stdputstr("s1:"); + sound_print_tree_1(susp->s1, n); + + indent(n); + stdputstr("bw:"); + sound_print_tree_1(susp->bw, n); +} + + +sound_type snd_make_resoncv(sound_type s1, double hz, sound_type bw, int normalization) +{ + register resoncv_susp_type susp; + rate_type sr = s1->sr; + time_type t0 = max(s1->t0, bw->t0); + int interp_desc = 0; + sample_type scale_factor = 1.0F; + time_type t0_min = t0; + falloc_generic(susp, resoncv_susp_node, "snd_make_resoncv"); + susp->scale1 = s1->scale; + susp->c3co = 0.0; + susp->coshz = cos(hz * PI2 / s1->sr); + susp->c2 = 0.0; + susp->c1 = 0.0; + susp->normalization = normalization; + susp->y1 = 0.0; + susp->y2 = 0.0; + bw->scale = (sample_type) (bw->scale * (-PI2 / s1->sr)); + + /* select a susp fn based on sample rates */ + interp_desc = (interp_desc << 2) + interp_style(s1, sr); + interp_desc = (interp_desc << 2) + interp_style(bw, sr); + switch (interp_desc) { + case INTERP_sn: /* handled below */ + case INTERP_ss: /* handled below */ + case INTERP_nn: /* handled below */ + case INTERP_ns: susp->susp.fetch = resoncv_ns_fetch; break; + case INTERP_si: /* handled below */ + case INTERP_ni: susp->susp.fetch = resoncv_ni_fetch; break; + case INTERP_sr: /* handled below */ + case INTERP_nr: susp->susp.fetch = resoncv_nr_fetch; break; + default: snd_badsr(); break; + } + + susp->terminate_cnt = UNKNOWN; + /* handle unequal start times, if any */ + if (t0 < s1->t0) sound_prepend_zeros(s1, t0); + if (t0 < bw->t0) sound_prepend_zeros(bw, t0); + /* minimum start time over all inputs: */ + t0_min = min(s1->t0, min(bw->t0, t0)); + /* how many samples to toss before t0: */ + susp->susp.toss_cnt = (long) ((t0 - t0_min) * sr + 0.5); + if (susp->susp.toss_cnt > 0) { + susp->susp.keep_fetch = susp->susp.fetch; + susp->susp.fetch = resoncv_toss_fetch; + } + + /* initialize susp state */ + susp->susp.free = resoncv_free; + susp->susp.sr = sr; + susp->susp.t0 = t0; + susp->susp.mark = resoncv_mark; + susp->susp.print_tree = resoncv_print_tree; + susp->susp.name = "resoncv"; + susp->logically_stopped = false; + susp->susp.log_stop_cnt = logical_stop_cnt_cvt(s1); + susp->started = false; + susp->susp.current = 0; + susp->s1 = s1; + susp->s1_cnt = 0; + susp->bw = bw; + susp->bw_cnt = 0; + susp->bw_pHaSe = 0.0; + susp->bw_pHaSe_iNcR = bw->sr / sr; + susp->bw_n = 0; + susp->output_per_bw = sr / bw->sr; + return sound_create((snd_susp_type)susp, t0, sr, scale_factor); +} + + +sound_type snd_resoncv(sound_type s1, double hz, sound_type bw, int normalization) +{ + sound_type s1_copy = sound_copy(s1); + sound_type bw_copy = sound_copy(bw); + return snd_make_resoncv(s1_copy, hz, bw_copy, normalization); +} |