#include <math.h>#include <stdlib.h>#include <stdint.h>#include "patchwerk.h"#include "core.h"#define SK_OSC_PRIV#include "dsp/osc.h" struct osc_n {    pw_cable *freq;    pw_cable *amp;    pw_cable *out;    sk_osc osc;}; static void compute(pw_node *node){    int blksize;    int n;    struct osc_n *osc;     blksize = pw_node_blksize(node);     osc = (struct osc_n *)pw_node_get_data(node);     for (n = 0; n < blksize; n++) {        PWFLT out, f, a;        f = pw_cable_get(osc->freq, n);        a = pw_cable_get(osc->amp, n);         sk_osc_freq(&osc->osc, f);        sk_osc_amp(&osc->osc, a);        out = sk_osc_tick(&osc->osc);         pw_cable_set(osc->out, n, out);    }} static void destroy(pw_node *node){    pw_patch *patch;    int rc;    void *ud;    rc = pw_node_get_patch(node, &patch);    if (rc != PW_OK) return;    pw_node_cables_free(node);    ud = pw_node_get_data(node);    pw_memory_free(patch, &ud);} int sk_node_osc(sk_core *core){    pw_patch *patch;    pw_node *node;    int rc;    sk_param freq;    sk_param amp;    void *ud;    struct osc_n *osc;    int sr;    sk_table *tab;    SKFLT iphs;     rc = sk_param_get_constant(core, &iphs);    SK_ERROR_CHECK(rc);     rc = sk_param_get(core, &amp);    SK_ERROR_CHECK(rc);     rc = sk_param_get(core, &freq);    SK_ERROR_CHECK(rc);     rc = sk_core_table_pop(core, &tab);    SK_ERROR_CHECK(rc);     patch = sk_core_patch(core);     rc = pw_memory_alloc(patch, sizeof(struct osc_n), &ud);    SK_PW_ERROR_CHECK(rc);    osc = (struct osc_n *)ud;     sr = pw_patch_srate_get(patch);    sk_osc_init(&osc->osc, sr,                sk_table_data(tab),                sk_table_size(tab),                iphs);     rc = pw_patch_new_node(patch, &node);    SK_PW_ERROR_CHECK(rc);     rc = pw_node_cables_alloc(node, 3);    SK_PW_ERROR_CHECK(rc);     pw_node_set_block(node, 2);     pw_node_get_cable(node, 0, &osc->freq);    pw_node_get_cable(node, 1, &osc->amp);    pw_node_get_cable(node, 2, &osc->out);     pw_node_set_data(node, osc);    pw_node_set_compute(node, compute);    pw_node_set_destroy(node, destroy);     sk_param_set(core, node, &freq, 0);    sk_param_set(core, node, &amp, 1);    sk_param_out(core, node, 2);    return 0;}