diff options
Diffstat (limited to 'tran/atonev.c')
| -rw-r--r-- | tran/atonev.c | 526 |
1 files changed, 526 insertions, 0 deletions
diff --git a/tran/atonev.c b/tran/atonev.c new file mode 100644 index 0000000..72532c6 --- /dev/null +++ b/tran/atonev.c @@ -0,0 +1,526 @@ +#include "stdio.h" +#ifndef mips +#include "stdlib.h" +#endif +#include "xlisp.h" +#include "sound.h" + +#include "falloc.h" +#include "cext.h" +#include "atonev.h" + +void atonev_free(); + + +typedef struct atonev_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 hz; + long hz_cnt; + sample_block_values_type hz_ptr; + + /* support for interpolation of hz */ + sample_type hz_x1_sample; + double hz_pHaSe; + double hz_pHaSe_iNcR; + + /* support for ramp between samples of hz */ + double output_per_hz; + long hz_n; + + double cc; + double prev; +} atonev_susp_node, *atonev_susp_type; + + +void atonev_ns_fetch(register atonev_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 cc_reg; + register double prev_reg; + register sample_type hz_scale_reg = susp->hz->scale; + register sample_block_values_type hz_ptr_reg; + register sample_block_values_type s1_ptr_reg; + falloc_sample_block(out, "atonev_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 hz input sample block: */ + susp_check_term_samples(hz, hz_ptr, hz_cnt); + togo = min(togo, susp->hz_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; + cc_reg = susp->cc; + prev_reg = susp->prev; + hz_ptr_reg = susp->hz_ptr; + s1_ptr_reg = susp->s1_ptr; + out_ptr_reg = out_ptr; + if (n) do { /* the inner sample computation loop */ + double current; + register double bb; + bb = 2.0 - cos((hz_scale_reg * *hz_ptr_reg++)); + cc_reg = bb - sqrt((bb * bb) - 1.0); +current = *s1_ptr_reg++; + prev_reg = cc_reg * (prev_reg + current); + *out_ptr_reg++ = (sample_type) prev_reg; + prev_reg -= current;; + } while (--n); /* inner loop */ + + susp->prev = prev_reg; + /* using hz_ptr_reg is a bad idea on RS/6000: */ + susp->hz_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(hz_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; + } +} /* atonev_ns_fetch */ + + +void atonev_ni_fetch(register atonev_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 cc_reg; + register double prev_reg; + register double hz_pHaSe_iNcR_rEg = susp->hz_pHaSe_iNcR; + register double hz_pHaSe_ReG; + register sample_type hz_x1_sample_reg; + register sample_block_values_type s1_ptr_reg; + falloc_sample_block(out, "atonev_ni_fetch"); + out_ptr = out->samples; + snd_list->block = out; + + /* make sure sounds are primed with first values */ + if (!susp->started) { + register double bb; + susp->started = true; + susp_check_term_samples(hz, hz_ptr, hz_cnt); + susp->hz_x1_sample = susp_fetch_sample(hz, hz_ptr, hz_cnt); + bb = 2.0 - cos(susp->hz_x1_sample); + susp->cc = bb - sqrt((bb * bb) - 1.0); + } + + 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; + cc_reg = susp->cc; + prev_reg = susp->prev; + hz_pHaSe_ReG = susp->hz_pHaSe; + hz_x1_sample_reg = susp->hz_x1_sample; + s1_ptr_reg = susp->s1_ptr; + out_ptr_reg = out_ptr; + if (n) do { /* the inner sample computation loop */ + double current; + if (hz_pHaSe_ReG >= 1.0) { +/* fixup-depends hz */ + register double bb; + /* pick up next sample as hz_x1_sample: */ + susp->hz_ptr++; + susp_took(hz_cnt, 1); + hz_pHaSe_ReG -= 1.0; + susp_check_term_samples_break(hz, hz_ptr, hz_cnt, hz_x1_sample_reg); + hz_x1_sample_reg = susp_current_sample(hz, hz_ptr); + bb = 2.0 - cos(hz_x1_sample_reg); + cc_reg = susp->cc = bb - sqrt((bb * bb) - 1.0); + } +current = *s1_ptr_reg++; + prev_reg = cc_reg * (prev_reg + current); + *out_ptr_reg++ = (sample_type) prev_reg; + prev_reg -= current;; + hz_pHaSe_ReG += hz_pHaSe_iNcR_rEg; + } while (--n); /* inner loop */ + + togo -= n; + susp->prev = prev_reg; + susp->hz_pHaSe = hz_pHaSe_ReG; + susp->hz_x1_sample = hz_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; + } +} /* atonev_ni_fetch */ + + +void atonev_nr_fetch(register atonev_susp_type susp, snd_list_type snd_list) +{ + int cnt = 0; /* how many samples computed */ + sample_type hz_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 cc_reg; + register double prev_reg; + register sample_block_values_type s1_ptr_reg; + falloc_sample_block(out, "atonev_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->hz_pHaSe = 1.0; + } + + susp_check_term_samples(hz, hz_ptr, hz_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 hz_x1_sample when phase goes past 1.0; */ + /* use hz_n (computed below) to avoid roundoff errors: */ + if (susp->hz_n <= 0) { + register double bb; + susp_check_term_samples(hz, hz_ptr, hz_cnt); + susp->hz_x1_sample = susp_fetch_sample(hz, hz_ptr, hz_cnt); + susp->hz_pHaSe -= 1.0; + /* hz_n gets number of samples before phase exceeds 1.0: */ + susp->hz_n = (long) ((1.0 - susp->hz_pHaSe) * + susp->output_per_hz); + bb = 2.0 - cos(susp->hz_x1_sample); + susp->cc = bb - sqrt((bb * bb) - 1.0); + } + togo = min(togo, susp->hz_n); + hz_val = susp->hz_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; + cc_reg = susp->cc; + prev_reg = susp->prev; + s1_ptr_reg = susp->s1_ptr; + out_ptr_reg = out_ptr; + if (n) do { /* the inner sample computation loop */ + double current; +current = *s1_ptr_reg++; + prev_reg = cc_reg * (prev_reg + current); + *out_ptr_reg++ = (sample_type) prev_reg; + prev_reg -= current;; + } while (--n); /* inner loop */ + + susp->prev = prev_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->hz_pHaSe += togo * susp->hz_pHaSe_iNcR; + susp->hz_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; + } +} /* atonev_nr_fetch */ + + +void atonev_toss_fetch(susp, snd_list) + register atonev_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 hz up to final_time for this block of zeros */ + while ((round((final_time - susp->hz->t0) * susp->hz->sr)) >= + susp->hz->current) + susp_get_samples(hz, hz_ptr, hz_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->hz->t0) * susp->hz->sr - + (susp->hz->current - susp->hz_cnt)); + susp->hz_ptr += n; + susp_took(hz_cnt, n); + susp->susp.fetch = susp->susp.keep_fetch; + (*(susp->susp.fetch))(susp, snd_list); +} + + +void atonev_mark(atonev_susp_type susp) +{ + sound_xlmark(susp->s1); + sound_xlmark(susp->hz); +} + + +void atonev_free(atonev_susp_type susp) +{ + sound_unref(susp->s1); + sound_unref(susp->hz); + ffree_generic(susp, sizeof(atonev_susp_node), "atonev_free"); +} + + +void atonev_print_tree(atonev_susp_type susp, int n) +{ + indent(n); + stdputstr("s1:"); + sound_print_tree_1(susp->s1, n); + + indent(n); + stdputstr("hz:"); + sound_print_tree_1(susp->hz, n); +} + + +sound_type snd_make_atonev(sound_type s1, sound_type hz) +{ + register atonev_susp_type susp; + rate_type sr = s1->sr; + time_type t0 = max(s1->t0, hz->t0); + int interp_desc = 0; + sample_type scale_factor = 1.0F; + time_type t0_min = t0; + /* combine scale factors of linear inputs (S1) */ + scale_factor *= s1->scale; + s1->scale = 1.0F; + + /* try to push scale_factor back to a low sr input */ + if (s1->sr < sr) { s1->scale = scale_factor; scale_factor = 1.0F; } + + falloc_generic(susp, atonev_susp_node, "snd_make_atonev"); + susp->cc = 0.0; + susp->prev = 0.0; + hz->scale = (sample_type) (hz->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(hz, sr); + switch (interp_desc) { + case INTERP_nn: /* handled below */ + case INTERP_ns: susp->susp.fetch = atonev_ns_fetch; break; + case INTERP_ni: susp->susp.fetch = atonev_ni_fetch; break; + case INTERP_nr: susp->susp.fetch = atonev_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 < hz->t0) sound_prepend_zeros(hz, t0); + /* minimum start time over all inputs: */ + t0_min = min(s1->t0, min(hz->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 = atonev_toss_fetch; + } + + /* initialize susp state */ + susp->susp.free = atonev_free; + susp->susp.sr = sr; + susp->susp.t0 = t0; + susp->susp.mark = atonev_mark; + susp->susp.print_tree = atonev_print_tree; + susp->susp.name = "atonev"; + 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->hz = hz; + susp->hz_cnt = 0; + susp->hz_pHaSe = 0.0; + susp->hz_pHaSe_iNcR = hz->sr / sr; + susp->hz_n = 0; + susp->output_per_hz = sr / hz->sr; + return sound_create((snd_susp_type)susp, t0, sr, scale_factor); +} + + +sound_type snd_atonev(sound_type s1, sound_type hz) +{ + sound_type s1_copy = sound_copy(s1); + sound_type hz_copy = sound_copy(hz); + return snd_make_atonev(s1_copy, hz_copy); +} |