void flute_freq_toss_fetch(snd_susp_type a_susp, snd_list_type snd_list)
{
flute_freq_susp_type susp = (flute_freq_susp_type) a_susp;
time_type final_time = susp->susp.t0;
long n;
/* fetch samples from breath_env up to final_time for this block of zeros */
while ((round((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);
/* fetch samples from freq_env up to final_time for this block of zeros */
while ((round((final_time - susp->freq_env->t0) * susp->freq_env->sr)) >=
susp->freq_env->current)
susp_get_samples(freq_env, freq_env_ptr, freq_env_cnt);
/* convert to normal processing when we hit final_count */
/* we want each signal positioned at final_time */
n = round((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);
n = round((final_time - susp->freq_env->t0) * susp->freq_env->sr -
(susp->freq_env->current - susp->freq_env_cnt));
susp->freq_env_ptr += n;
susp_took(freq_env_cnt, n);
susp->susp.fetch = susp->susp.keep_fetch;
(*(susp->susp.fetch))(a_susp, snd_list);
}
void tonev_toss_fetch(snd_susp_type a_susp, snd_list_type snd_list)
{
tonev_susp_type susp = (tonev_susp_type) a_susp;
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))(a_susp, snd_list);
}
void alpassvc_toss_fetch(snd_susp_type a_susp, snd_list_type snd_list)
{
alpassvc_susp_type susp = (alpassvc_susp_type) a_susp;
time_type final_time = susp->susp.t0;
long n;
/* fetch samples from input up to final_time for this block of zeros */
while ((round((final_time - susp->input->t0) * susp->input->sr)) >=
susp->input->current)
susp_get_samples(input, input_ptr, input_cnt);
/* fetch samples from delaysnd up to final_time for this block of zeros */
while ((round((final_time - susp->delaysnd->t0) * susp->delaysnd->sr)) >=
susp->delaysnd->current)
susp_get_samples(delaysnd, delaysnd_ptr, delaysnd_cnt);
/* convert to normal processing when we hit final_count */
/* we want each signal positioned at final_time */
n = round((final_time - susp->input->t0) * susp->input->sr -
(susp->input->current - susp->input_cnt));
susp->input_ptr += n;
susp_took(input_cnt, n);
n = round((final_time - susp->delaysnd->t0) * susp->delaysnd->sr -
(susp->delaysnd->current - susp->delaysnd_cnt));
susp->delaysnd_ptr += n;
susp_took(delaysnd_cnt, n);
susp->susp.fetch = susp->susp.keep_fetch;
(*(susp->susp.fetch))(a_susp, snd_list);
}
/* pvshell_test_g -- get next sample block and check flags
*
* Only call this from PVSHELL_TEST_G macro
*/
long pvshell_test_g(pvshell_type susp)
{
long flags = 0;
susp_get_samples(g, g_ptr, g_cnt); /* warning: macro references susp */
if (susp->g->logical_stop_cnt == susp->g->current - susp->g_cnt) {
flags |= PVSHELL_FLAG_LOGICAL_STOP;
}
if (susp->g_ptr == zero_block->samples) {
flags |= PVSHELL_FLAG_TERMINATE;
}
return flags;
}
void sax_all_toss_fetch(snd_susp_type a_susp, snd_list_type snd_list)
{
sax_all_susp_type susp = (sax_all_susp_type) a_susp;
time_type final_time = susp->susp.t0;
long n;
/* fetch samples from breath_env up to final_time for this block of zeros */
while ((round((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);
/* fetch samples from freq_env up to final_time for this block of zeros */
while ((round((final_time - susp->freq_env->t0) * susp->freq_env->sr)) >=
susp->freq_env->current)
susp_get_samples(freq_env, freq_env_ptr, freq_env_cnt);
/* fetch samples from reed_stiffness up to final_time for this block of zeros */
while ((round((final_time - susp->reed_stiffness->t0) * susp->reed_stiffness->sr)) >=
susp->reed_stiffness->current)
susp_get_samples(reed_stiffness, reed_stiffness_ptr, reed_stiffness_cnt);
/* fetch samples from noise_env up to final_time for this block of zeros */
while ((round((final_time - susp->noise_env->t0) * susp->noise_env->sr)) >=
susp->noise_env->current)
susp_get_samples(noise_env, noise_env_ptr, noise_env_cnt);
/* fetch samples from blow_pos up to final_time for this block of zeros */
while ((round((final_time - susp->blow_pos->t0) * susp->blow_pos->sr)) >=
susp->blow_pos->current)
susp_get_samples(blow_pos, blow_pos_ptr, blow_pos_cnt);
/* fetch samples from reed_table_offset up to final_time for this block of zeros */
while ((round((final_time - susp->reed_table_offset->t0) * susp->reed_table_offset->sr)) >=
susp->reed_table_offset->current)
susp_get_samples(reed_table_offset, reed_table_offset_ptr, reed_table_offset_cnt);
/* convert to normal processing when we hit final_count */
/* we want each signal positioned at final_time */
n = round((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);
n = round((final_time - susp->freq_env->t0) * susp->freq_env->sr -
(susp->freq_env->current - susp->freq_env_cnt));
susp->freq_env_ptr += n;
susp_took(freq_env_cnt, n);
n = round((final_time - susp->reed_stiffness->t0) * susp->reed_stiffness->sr -
(susp->reed_stiffness->current - susp->reed_stiffness_cnt));
susp->reed_stiffness_ptr += n;
susp_took(reed_stiffness_cnt, n);
n = round((final_time - susp->noise_env->t0) * susp->noise_env->sr -
(susp->noise_env->current - susp->noise_env_cnt));
susp->noise_env_ptr += n;
susp_took(noise_env_cnt, n);
n = round((final_time - susp->blow_pos->t0) * susp->blow_pos->sr -
(susp->blow_pos->current - susp->blow_pos_cnt));
susp->blow_pos_ptr += n;
susp_took(blow_pos_cnt, n);
n = round((final_time - susp->reed_table_offset->t0) * susp->reed_table_offset->sr -
(susp->reed_table_offset->current - susp->reed_table_offset_cnt));
susp->reed_table_offset_ptr += n;
susp_took(reed_table_offset_cnt, n);
susp->susp.fetch = susp->susp.keep_fetch;
(*(susp->susp.fetch))(a_susp, snd_list);
}
void convolve_toss_fetch(snd_susp_type a_susp, snd_list_type snd_list)
{
convolve_susp_type susp = (convolve_susp_type) susp;
time_type final_time = susp->susp.t0;
long n;
/* fetch samples from x_snd up to final_time for this block of zeros */
while ((round((final_time - susp->x_snd->t0) * susp->x_snd->sr)) >=
susp->x_snd->current)
susp_get_samples(x_snd, x_snd_ptr, x_snd_cnt);
/* convert to normal processing when we hit final_count */
/* we want each signal positioned at final_time */
n = round((final_time - susp->x_snd->t0) * susp->x_snd->sr -
(susp->x_snd->current - susp->x_snd_cnt));
susp->x_snd_ptr += n;
susp_took(x_snd_cnt, n);
susp->susp.fetch = susp->susp.keep_fetch;
(*(susp->susp.fetch))(a_susp, snd_list);
}
void convolve_s_fetch(snd_susp_type a_susp, snd_list_type snd_list)
{
convolve_susp_type susp = (convolve_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;
sample_type *R = susp->R;
sample_type *R_current;
int N = susp->N;
falloc_sample_block(out, "convolve_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;
/* if we need output samples, generate them here */
if (susp->R_current >= R + N) {
/* Copy N samples of x_snd into X and zero fill to size 2N */
int i = 0;
sample_type *X = susp->X;
sample_type *H = susp->H;
int to_copy;
while (i < N) {
if (susp->x_snd_cnt == 0) {
susp_get_samples(x_snd, x_snd_ptr, x_snd_cnt);
if (susp->x_snd->logical_stop_cnt ==
susp->x_snd->current - susp->x_snd_cnt) {
min_cnt(&susp->susp.log_stop_cnt, susp->x_snd,
(snd_susp_type) susp, susp->x_snd_cnt);
}
}
if (susp->x_snd_ptr == zero_block->samples) {
min_cnt(&susp->terminate_cnt, susp->x_snd,
(snd_susp_type) susp, susp->x_snd_cnt);
/* extend the output to include impulse response */
susp->terminate_cnt += susp->h_len;
}
/* copy no more than the remaining space and no more than
* the amount remaining in the block
*/
to_copy = min(N - i, susp->x_snd_cnt);
memcpy(X + i, susp->x_snd_ptr,
to_copy * sizeof(*susp->x_snd_ptr));
susp->x_snd_ptr += to_copy;
susp->x_snd_cnt -= to_copy;
i += to_copy;
}
/* zero fill to size 2N */
memset(X + N, 0, N * sizeof(X[0]));
/* Compute FFT of X in place */
fftInit(susp->M);
rffts(X, susp->M, 1);
/* Multiply X by H (result goes into X) */
rspectprod(X, H, X, N * 2);
/* Compute IFFT of X in place */
riffts(X, susp->M, 1);
/* Shift R, zero fill, add X, all in one loop */
for (i = 0; i < N; i++) {
R[i] = R[i + N] + X[i];
R[i + N] = X[i + N];
}
/* now N samples of R can be output */
susp->R_current = R;
}
/* compute togo, the number of samples to "compute" */
/* can't use more than what's left in R. R_current is
the next sample of R, so what's left is N - (R - R_current) */
R_current = susp->R_current;
togo = min(togo, N - (R_current - R));
/* 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 &&
susp->susp.log_stop_cnt <= susp->susp.current + cnt + togo) {
togo = susp->susp.log_stop_cnt - (susp->susp.current + cnt);
if (togo == 0) break;
}
n = togo;
out_ptr_reg = out_ptr;
if (n) do { /* the inner sample computation loop */
*out_ptr_reg++ = (sample_type) *R_current++;
} while (--n); /* inner loop */
/* using R_current is a bad idea on RS/6000: */
susp->R_current += togo;
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;
}
} /* convolve_s_fetch */