79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
#include "common.h"
|
|
#include <bw_dist.h>
|
|
#include <bw_src_int.h>
|
|
|
|
#define BUF_SIZE 32
|
|
|
|
typedef struct plugin {
|
|
bw_dist_coeffs dist_coeffs;
|
|
bw_dist_state dist_state;
|
|
bw_src_int_coeffs src_up_coeffs;
|
|
bw_src_int_state src_up_state;
|
|
bw_src_int_coeffs src_down_coeffs;
|
|
bw_src_int_state src_down_state;
|
|
|
|
float buf[BUF_SIZE];
|
|
} plugin;
|
|
|
|
static void plugin_init(plugin *instance) {
|
|
bw_dist_init(&instance->dist_coeffs);
|
|
bw_src_int_init(&instance->src_up_coeffs, 2);
|
|
bw_src_int_init(&instance->src_down_coeffs, -2);
|
|
}
|
|
|
|
static void plugin_fini(plugin *instance) {
|
|
(void)instance;
|
|
}
|
|
|
|
static void plugin_set_sample_rate(plugin *instance, float sample_rate) {
|
|
bw_dist_set_sample_rate(&instance->dist_coeffs, 2.f * sample_rate);
|
|
}
|
|
|
|
static size_t plugin_mem_req(plugin *instance) {
|
|
(void)instance;
|
|
return 0;
|
|
}
|
|
|
|
static void plugin_mem_set(plugin *instance, void *mem) {
|
|
(void)instance;
|
|
(void)mem;
|
|
}
|
|
|
|
static void plugin_reset(plugin *instance) {
|
|
bw_dist_reset_coeffs(&instance->dist_coeffs);
|
|
bw_dist_reset_state(&instance->dist_coeffs, &instance->dist_state, 0.f);
|
|
bw_src_int_reset_state(&instance->src_up_coeffs, &instance->src_up_state, 0.f);
|
|
bw_src_int_reset_state(&instance->src_down_coeffs, &instance->src_down_state, 0.f);
|
|
}
|
|
|
|
static void plugin_set_parameter(plugin *instance, size_t index, float value) {
|
|
switch (index) {
|
|
case 0:
|
|
bw_dist_set_distortion(&instance->dist_coeffs, 0.01f * value);
|
|
break;
|
|
case 1:
|
|
bw_dist_set_tone(&instance->dist_coeffs, 0.01f * value);
|
|
break;
|
|
case 2:
|
|
bw_dist_set_volume(&instance->dist_coeffs, 0.01f * value);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static float plugin_get_parameter(plugin *instance, size_t index) {
|
|
(void)instance;
|
|
(void)index;
|
|
return 0.f;
|
|
}
|
|
|
|
static void plugin_process(plugin *instance, const float **inputs, float **outputs, size_t n_samples) {
|
|
size_t i = 0;
|
|
while (i < n_samples) {
|
|
int n = bw_mini32(n_samples - i, BUF_SIZE >> 1);
|
|
bw_src_int_process(&instance->src_up_coeffs, &instance->src_up_state, inputs[0] + i, instance->buf, n);
|
|
bw_dist_process(&instance->dist_coeffs, &instance->dist_state, instance->buf, instance->buf, n << 1);
|
|
bw_src_int_process(&instance->src_down_coeffs, &instance->src_down_state, instance->buf, outputs[0] + i, n << 1);
|
|
i += n;
|
|
}
|
|
}
|