mirror of
https://github.com/cookiengineer/audacity
synced 2025-05-05 14:18:53 +02:00
119 lines
2.8 KiB
C
119 lines
2.8 KiB
C
#include "stdio.h"
|
|
#ifndef mips
|
|
#include "stdlib.h"
|
|
#endif
|
|
#include "xlisp.h"
|
|
#include "sound.h"
|
|
|
|
#include "falloc.h"
|
|
#include "cext.h"
|
|
#include "instrsitar.h"
|
|
|
|
void sitar_free();
|
|
|
|
|
|
typedef struct sitar_susp_struct {
|
|
snd_susp_node susp;
|
|
long terminate_cnt;
|
|
|
|
struct instr *mysitar;
|
|
int temp_ret_value;
|
|
} sitar_susp_node, *sitar_susp_type;
|
|
|
|
|
|
#include "instr.h"
|
|
|
|
|
|
void sitar__fetch(register sitar_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 struct instr * mysitar_reg;
|
|
falloc_sample_block(out, "sitar__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 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;
|
|
}
|
|
|
|
n = togo;
|
|
mysitar_reg = susp->mysitar;
|
|
out_ptr_reg = out_ptr;
|
|
if (n) do { /* the inner sample computation loop */
|
|
|
|
*out_ptr_reg++ = (sample_type) tick(mysitar_reg);
|
|
} while (--n); /* inner loop */
|
|
|
|
susp->mysitar = mysitar_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;
|
|
}
|
|
} /* sitar__fetch */
|
|
|
|
|
|
void sitar_free(sitar_susp_type susp)
|
|
{
|
|
|
|
deleteInstrument(susp->mysitar);
|
|
ffree_generic(susp, sizeof(sitar_susp_node), "sitar_free");
|
|
}
|
|
|
|
|
|
void sitar_print_tree(sitar_susp_type susp, int n)
|
|
{
|
|
}
|
|
|
|
|
|
sound_type snd_make_sitar(time_type t0, double freq, time_type dur, rate_type sr)
|
|
{
|
|
register sitar_susp_type susp;
|
|
/* sr specified as input parameter */
|
|
/* t0 specified as input parameter */
|
|
sample_type scale_factor = 1.0F;
|
|
falloc_generic(susp, sitar_susp_node, "snd_make_sitar");
|
|
susp->mysitar = initInstrument(SITAR, round(sr));
|
|
susp->temp_ret_value = noteOn(susp->mysitar, freq, 1.0);
|
|
susp->susp.fetch = sitar__fetch;
|
|
|
|
susp->terminate_cnt = round((dur) * sr);
|
|
/* initialize susp state */
|
|
susp->susp.free = sitar_free;
|
|
susp->susp.sr = sr;
|
|
susp->susp.t0 = t0;
|
|
susp->susp.mark = NULL;
|
|
susp->susp.print_tree = sitar_print_tree;
|
|
susp->susp.name = "sitar";
|
|
susp->susp.log_stop_cnt = UNKNOWN;
|
|
susp->susp.current = 0;
|
|
return sound_create((snd_susp_type)susp, t0, sr, scale_factor);
|
|
}
|
|
|
|
|
|
sound_type snd_sitar(time_type t0, double freq, time_type dur, rate_type sr)
|
|
{
|
|
return snd_make_sitar(t0, freq, dur, sr);
|
|
}
|