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-rw-r--r--tran/fmfbv.c606
1 files changed, 606 insertions, 0 deletions
diff --git a/tran/fmfbv.c b/tran/fmfbv.c
new file mode 100644
index 0000000..e843a45
--- /dev/null
+++ b/tran/fmfbv.c
@@ -0,0 +1,606 @@
+#include "stdio.h"
+#ifndef mips
+#include "stdlib.h"
+#endif
+#include "xlisp.h"
+#include "sound.h"
+
+#include "falloc.h"
+#include "cext.h"
+#include "fmfbv.h"
+
+void fmfbv_free();
+
+
+typedef struct fmfbv_susp_struct {
+ snd_susp_node susp;
+ boolean started;
+ long terminate_cnt;
+ boolean logically_stopped;
+ sound_type index;
+ long index_cnt;
+ sample_block_values_type index_ptr;
+
+ /* support for interpolation of index */
+ sample_type index_x1_sample;
+ double index_pHaSe;
+ double index_pHaSe_iNcR;
+
+ /* support for ramp between samples of index */
+ double output_per_index;
+ long index_n;
+
+ double yy;
+ double sin_y;
+ double phase;
+ double ph_incr;
+} fmfbv_susp_node, *fmfbv_susp_type;
+
+
+void fmfbv_n_fetch(register fmfbv_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 yy_reg;
+ register double sin_y_reg;
+ register double phase_reg;
+ register double ph_incr_reg;
+ register sample_block_values_type index_ptr_reg;
+ falloc_sample_block(out, "fmfbv_n_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 index input sample block: */
+ susp_check_term_log_samples(index, index_ptr, index_cnt);
+ togo = min(togo, susp->index_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;
+ yy_reg = susp->yy;
+ sin_y_reg = susp->sin_y;
+ phase_reg = susp->phase;
+ ph_incr_reg = susp->ph_incr;
+ index_ptr_reg = susp->index_ptr;
+ out_ptr_reg = out_ptr;
+ if (n) do { /* the inner sample computation loop */
+phase_reg += ph_incr_reg;
+ if (phase_reg > SINE_TABLE_LEN) phase_reg -= SINE_TABLE_LEN;
+ /* PHASE is incremented and INDEX scaled to table INDEX, and
+ sin_y_reg is a signal (-1 to +1) */
+ yy_reg = phase_reg + *index_ptr_reg++ * sin_y_reg;
+ /* so yy_reg is a table index */
+ while (yy_reg > SINE_TABLE_LEN) yy_reg -= SINE_TABLE_LEN;
+ while (yy_reg < 0) yy_reg += SINE_TABLE_LEN;
+ sin_y_reg = sine_table[(int) yy_reg]; /* truncation gets valid index */
+ /* sin_y_reg is now a signal not ready for table lookup */
+ *out_ptr_reg++ = sin_y_reg;;
+ } while (--n); /* inner loop */
+
+ susp->yy = yy_reg;
+ susp->sin_y = sin_y_reg;
+ susp->phase = phase_reg;
+ /* using index_ptr_reg is a bad idea on RS/6000: */
+ susp->index_ptr += togo;
+ out_ptr += togo;
+ susp_took(index_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;
+ }
+} /* fmfbv_n_fetch */
+
+
+void fmfbv_s_fetch(register fmfbv_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 yy_reg;
+ register double sin_y_reg;
+ register double phase_reg;
+ register double ph_incr_reg;
+ register sample_type index_scale_reg = susp->index->scale;
+ register sample_block_values_type index_ptr_reg;
+ falloc_sample_block(out, "fmfbv_s_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 index input sample block: */
+ susp_check_term_log_samples(index, index_ptr, index_cnt);
+ togo = min(togo, susp->index_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;
+ yy_reg = susp->yy;
+ sin_y_reg = susp->sin_y;
+ phase_reg = susp->phase;
+ ph_incr_reg = susp->ph_incr;
+ index_ptr_reg = susp->index_ptr;
+ out_ptr_reg = out_ptr;
+ if (n) do { /* the inner sample computation loop */
+phase_reg += ph_incr_reg;
+ if (phase_reg > SINE_TABLE_LEN) phase_reg -= SINE_TABLE_LEN;
+ /* PHASE is incremented and INDEX scaled to table INDEX, and
+ sin_y_reg is a signal (-1 to +1) */
+ yy_reg = phase_reg + (index_scale_reg * *index_ptr_reg++) * sin_y_reg;
+ /* so yy_reg is a table index */
+ while (yy_reg > SINE_TABLE_LEN) yy_reg -= SINE_TABLE_LEN;
+ while (yy_reg < 0) yy_reg += SINE_TABLE_LEN;
+ sin_y_reg = sine_table[(int) yy_reg]; /* truncation gets valid index */
+ /* sin_y_reg is now a signal not ready for table lookup */
+ *out_ptr_reg++ = sin_y_reg;;
+ } while (--n); /* inner loop */
+
+ susp->yy = yy_reg;
+ susp->sin_y = sin_y_reg;
+ susp->phase = phase_reg;
+ /* using index_ptr_reg is a bad idea on RS/6000: */
+ susp->index_ptr += togo;
+ out_ptr += togo;
+ susp_took(index_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;
+ }
+} /* fmfbv_s_fetch */
+
+
+void fmfbv_i_fetch(register fmfbv_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 yy_reg;
+ register double sin_y_reg;
+ register double phase_reg;
+ register double ph_incr_reg;
+ register double index_pHaSe_iNcR_rEg = susp->index_pHaSe_iNcR;
+ register double index_pHaSe_ReG;
+ register sample_type index_x1_sample_reg;
+ falloc_sample_block(out, "fmfbv_i_fetch");
+ out_ptr = out->samples;
+ snd_list->block = out;
+
+ /* make sure sounds are primed with first values */
+ if (!susp->started) {
+ susp->started = true;
+ susp_check_term_log_samples(index, index_ptr, index_cnt);
+ susp->index_x1_sample = susp_fetch_sample(index, index_ptr, index_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 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;
+ yy_reg = susp->yy;
+ sin_y_reg = susp->sin_y;
+ phase_reg = susp->phase;
+ ph_incr_reg = susp->ph_incr;
+ index_pHaSe_ReG = susp->index_pHaSe;
+ index_x1_sample_reg = susp->index_x1_sample;
+ out_ptr_reg = out_ptr;
+ if (n) do { /* the inner sample computation loop */
+ if (index_pHaSe_ReG >= 1.0) {
+/* fixup-depends index */
+ /* pick up next sample as index_x1_sample: */
+ susp->index_ptr++;
+ susp_took(index_cnt, 1);
+ index_pHaSe_ReG -= 1.0;
+ susp_check_term_log_samples_break(index, index_ptr, index_cnt, index_x1_sample_reg);
+ index_x1_sample_reg = susp_current_sample(index, index_ptr);
+ }
+phase_reg += ph_incr_reg;
+ if (phase_reg > SINE_TABLE_LEN) phase_reg -= SINE_TABLE_LEN;
+ /* PHASE is incremented and INDEX scaled to table INDEX, and
+ sin_y_reg is a signal (-1 to +1) */
+ yy_reg = phase_reg + index_x1_sample_reg * sin_y_reg;
+ /* so yy_reg is a table index */
+ while (yy_reg > SINE_TABLE_LEN) yy_reg -= SINE_TABLE_LEN;
+ while (yy_reg < 0) yy_reg += SINE_TABLE_LEN;
+ sin_y_reg = sine_table[(int) yy_reg]; /* truncation gets valid index */
+ /* sin_y_reg is now a signal not ready for table lookup */
+ *out_ptr_reg++ = sin_y_reg;;
+ index_pHaSe_ReG += index_pHaSe_iNcR_rEg;
+ } while (--n); /* inner loop */
+
+ togo -= n;
+ susp->yy = yy_reg;
+ susp->sin_y = sin_y_reg;
+ susp->phase = phase_reg;
+ susp->index_pHaSe = index_pHaSe_ReG;
+ susp->index_x1_sample = index_x1_sample_reg;
+ out_ptr += 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;
+ }
+} /* fmfbv_i_fetch */
+
+
+void fmfbv_r_fetch(register fmfbv_susp_type susp, snd_list_type snd_list)
+{
+ int cnt = 0; /* how many samples computed */
+ sample_type index_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 yy_reg;
+ register double sin_y_reg;
+ register double phase_reg;
+ register double ph_incr_reg;
+ falloc_sample_block(out, "fmfbv_r_fetch");
+ out_ptr = out->samples;
+ snd_list->block = out;
+
+ /* make sure sounds are primed with first values */
+ if (!susp->started) {
+ susp->started = true;
+ susp->index_pHaSe = 1.0;
+ }
+
+ susp_check_term_log_samples(index, index_ptr, index_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;
+
+ /* grab next index_x1_sample when phase goes past 1.0; */
+ /* use index_n (computed below) to avoid roundoff errors: */
+ if (susp->index_n <= 0) {
+ susp_check_term_log_samples(index, index_ptr, index_cnt);
+ susp->index_x1_sample = susp_fetch_sample(index, index_ptr, index_cnt);
+ susp->index_pHaSe -= 1.0;
+ /* index_n gets number of samples before phase exceeds 1.0: */
+ susp->index_n = (long) ((1.0 - susp->index_pHaSe) *
+ susp->output_per_index);
+ }
+ togo = min(togo, susp->index_n);
+ index_val = susp->index_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;
+ yy_reg = susp->yy;
+ sin_y_reg = susp->sin_y;
+ phase_reg = susp->phase;
+ ph_incr_reg = susp->ph_incr;
+ out_ptr_reg = out_ptr;
+ if (n) do { /* the inner sample computation loop */
+phase_reg += ph_incr_reg;
+ if (phase_reg > SINE_TABLE_LEN) phase_reg -= SINE_TABLE_LEN;
+ /* PHASE is incremented and INDEX scaled to table INDEX, and
+ sin_y_reg is a signal (-1 to +1) */
+ yy_reg = phase_reg + index_val * sin_y_reg;
+ /* so yy_reg is a table index */
+ while (yy_reg > SINE_TABLE_LEN) yy_reg -= SINE_TABLE_LEN;
+ while (yy_reg < 0) yy_reg += SINE_TABLE_LEN;
+ sin_y_reg = sine_table[(int) yy_reg]; /* truncation gets valid index */
+ /* sin_y_reg is now a signal not ready for table lookup */
+ *out_ptr_reg++ = sin_y_reg;;
+ } while (--n); /* inner loop */
+
+ susp->yy = yy_reg;
+ susp->sin_y = sin_y_reg;
+ susp->phase = phase_reg;
+ out_ptr += togo;
+ susp->index_pHaSe += togo * susp->index_pHaSe_iNcR;
+ susp->index_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;
+ }
+} /* fmfbv_r_fetch */
+
+
+void fmfbv_toss_fetch(susp, snd_list)
+ register fmfbv_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 index up to final_time for this block of zeros */
+ while ((round((final_time - susp->index->t0) * susp->index->sr)) >=
+ susp->index->current)
+ susp_get_samples(index, index_ptr, index_cnt);
+ /* convert to normal processing when we hit final_count */
+ /* we want each signal positioned at final_time */
+ n = round((final_time - susp->index->t0) * susp->index->sr -
+ (susp->index->current - susp->index_cnt));
+ susp->index_ptr += n;
+ susp_took(index_cnt, n);
+ susp->susp.fetch = susp->susp.keep_fetch;
+ (*(susp->susp.fetch))(susp, snd_list);
+}
+
+
+void fmfbv_mark(fmfbv_susp_type susp)
+{
+ sound_xlmark(susp->index);
+}
+
+
+void fmfbv_free(fmfbv_susp_type susp)
+{
+ sound_unref(susp->index);
+ ffree_generic(susp, sizeof(fmfbv_susp_node), "fmfbv_free");
+}
+
+
+void fmfbv_print_tree(fmfbv_susp_type susp, int n)
+{
+ indent(n);
+ stdputstr("index:");
+ sound_print_tree_1(susp->index, n);
+}
+
+
+sound_type snd_make_fmfbv(time_type t0, double hz, rate_type sr, sound_type index)
+{
+ register fmfbv_susp_type susp;
+ /* sr specified as input parameter */
+ /* t0 specified as input parameter */
+ int interp_desc = 0;
+ sample_type scale_factor = 1.0F;
+ time_type t0_min = t0;
+ falloc_generic(susp, fmfbv_susp_node, "snd_make_fmfbv");
+ susp->yy = 0.0;
+ susp->sin_y = 0.0;
+ susp->phase = 0.0;
+ susp->ph_incr = hz * SINE_TABLE_LEN / sr;
+ index->scale *= SINE_TABLE_LEN / PI2
+;
+
+ /* select a susp fn based on sample rates */
+ interp_desc = (interp_desc << 2) + interp_style(index, sr);
+ switch (interp_desc) {
+ case INTERP_n: susp->susp.fetch = fmfbv_n_fetch; break;
+ case INTERP_s: susp->susp.fetch = fmfbv_s_fetch; break;
+ case INTERP_i: susp->susp.fetch = fmfbv_i_fetch; break;
+ case INTERP_r: susp->susp.fetch = fmfbv_r_fetch; break;
+ default: snd_badsr(); break;
+ }
+
+ susp->terminate_cnt = UNKNOWN;
+ /* handle unequal start times, if any */
+ if (t0 < index->t0) sound_prepend_zeros(index, t0);
+ /* minimum start time over all inputs: */
+ t0_min = min(index->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 = fmfbv_toss_fetch;
+ }
+
+ /* initialize susp state */
+ susp->susp.free = fmfbv_free;
+ susp->susp.sr = sr;
+ susp->susp.t0 = t0;
+ susp->susp.mark = fmfbv_mark;
+ susp->susp.print_tree = fmfbv_print_tree;
+ susp->susp.name = "fmfbv";
+ susp->logically_stopped = false;
+ susp->susp.log_stop_cnt = logical_stop_cnt_cvt(index);
+ susp->started = false;
+ susp->susp.current = 0;
+ susp->index = index;
+ susp->index_cnt = 0;
+ susp->index_pHaSe = 0.0;
+ susp->index_pHaSe_iNcR = index->sr / sr;
+ susp->index_n = 0;
+ susp->output_per_index = sr / index->sr;
+ return sound_create((snd_susp_type)susp, t0, sr, scale_factor);
+}
+
+
+sound_type snd_fmfbv(time_type t0, double hz, rate_type sr, sound_type index)
+{
+ sound_type index_copy = sound_copy(index);
+ return snd_make_fmfbv(t0, hz, sr, index_copy);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-23 06:03:52 +0000