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#include "stdio.h"
#ifndef mips
#include "stdlib.h"
#endif
#include "xlisp.h"
#include "sound.h"
#include "falloc.h"
#include "cext.h"
#include "instrclar.h"
void clarinet_free(snd_susp_type a_susp);
typedef struct clarinet_susp_struct {
snd_susp_node susp;
int64_t terminate_cnt;
sound_type breath_env;
int breath_env_cnt;
sample_block_values_type breath_env_ptr;
struct instr *clar;
int temp_ret_value;
float breath_scale;
} clarinet_susp_node, *clarinet_susp_type;
#include "instr.h"
#include "upsample.h"
void clarinet_n_fetch(snd_susp_type a_susp, snd_list_type snd_list)
{
clarinet_susp_type susp = (clarinet_susp_type) a_susp;
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 struct instr * clar_reg;
register float breath_scale_reg;
register sample_block_values_type breath_env_ptr_reg;
falloc_sample_block(out, "clarinet_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 breath_env input sample block: */
susp_check_term_samples(breath_env, breath_env_ptr, breath_env_cnt);
togo = min(togo, susp->breath_env_cnt);
/* don't run past terminate time */
if (susp->terminate_cnt != UNKNOWN &&
susp->terminate_cnt <= susp->susp.current + cnt + togo) {
togo = (int) (susp->terminate_cnt - (susp->susp.current + cnt));
if (togo < 0) togo = 0; /* avoids rounding errros */
if (togo == 0) break;
}
n = togo;
clar_reg = susp->clar;
breath_scale_reg = susp->breath_scale;
breath_env_ptr_reg = susp->breath_env_ptr;
out_ptr_reg = out_ptr;
if (n) do { /* the inner sample computation loop */
controlChange(clar_reg, 128, breath_scale_reg * *breath_env_ptr_reg++);
*out_ptr_reg++ = (sample_type) tick(clar_reg);
} while (--n); /* inner loop */
susp->clar = clar_reg;
/* using breath_env_ptr_reg is a bad idea on RS/6000: */
susp->breath_env_ptr += togo;
out_ptr += togo;
susp_took(breath_env_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;
}
} /* clarinet_n_fetch */
void clarinet_toss_fetch(snd_susp_type a_susp, snd_list_type snd_list)
{
clarinet_susp_type susp = (clarinet_susp_type) a_susp;
time_type final_time = susp->susp.t0;
int n;
/* fetch samples from breath_env up to final_time for this block of zeros */
while ((ROUNDBIG((final_time - susp->breath_env->t0) * susp->breath_env->sr)) >=
susp->breath_env->current)
susp_get_samples(breath_env, breath_env_ptr, breath_env_cnt);
/* convert to normal processing when we hit final_count */
/* we want each signal positioned at final_time */
n = (int) ROUNDBIG((final_time - susp->breath_env->t0) * susp->breath_env->sr -
(susp->breath_env->current - susp->breath_env_cnt));
susp->breath_env_ptr += n;
susp_took(breath_env_cnt, n);
susp->susp.fetch = susp->susp.keep_fetch;
(*(susp->susp.fetch))(a_susp, snd_list);
}
void clarinet_mark(snd_susp_type a_susp)
{
clarinet_susp_type susp = (clarinet_susp_type) a_susp;
sound_xlmark(susp->breath_env);
}
void clarinet_free(snd_susp_type a_susp)
{
clarinet_susp_type susp = (clarinet_susp_type) a_susp;
deleteInstrument(susp->clar);
sound_unref(susp->breath_env);
ffree_generic(susp, sizeof(clarinet_susp_node), "clarinet_free");
}
void clarinet_print_tree(snd_susp_type a_susp, int n)
{
clarinet_susp_type susp = (clarinet_susp_type) a_susp;
indent(n);
stdputstr("breath_env:");
sound_print_tree_1(susp->breath_env, n);
}
sound_type snd_make_clarinet(double freq, sound_type breath_env, rate_type sr)
{
register clarinet_susp_type susp;
/* sr specified as input parameter */
time_type t0 = breath_env->t0;
sample_type scale_factor = 1.0F;
time_type t0_min = t0;
falloc_generic(susp, clarinet_susp_node, "snd_make_clarinet");
susp->clar = initInstrument(CLARINET, ROUND32(sr));
controlChange(susp->clar, 1, 0.0);;
susp->temp_ret_value = noteOn(susp->clar, freq, 1.0);
susp->breath_scale = breath_env->scale * CLAR_CONTROL_CHANGE_CONST;
/* make sure no sample rate is too high */
if (breath_env->sr > sr) {
sound_unref(breath_env);
snd_badsr();
} else if (breath_env->sr < sr) breath_env = snd_make_up(sr, breath_env);
susp->susp.fetch = clarinet_n_fetch;
susp->terminate_cnt = UNKNOWN;
/* handle unequal start times, if any */
if (t0 < breath_env->t0) sound_prepend_zeros(breath_env, t0);
/* minimum start time over all inputs: */
t0_min = min(breath_env->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 = clarinet_toss_fetch;
}
/* initialize susp state */
susp->susp.free = clarinet_free;
susp->susp.sr = sr;
susp->susp.t0 = t0;
susp->susp.mark = clarinet_mark;
susp->susp.print_tree = clarinet_print_tree;
susp->susp.name = "clarinet";
susp->susp.log_stop_cnt = UNKNOWN;
susp->susp.current = 0;
susp->breath_env = breath_env;
susp->breath_env_cnt = 0;
return sound_create((snd_susp_type)susp, t0, sr, scale_factor);
}
sound_type snd_clarinet(double freq, sound_type breath_env, rate_type sr)
{
sound_type breath_env_copy = sound_copy(breath_env);
return snd_make_clarinet(freq, breath_env_copy, sr);
}
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