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audacity/cmake-proxies/ladspa-plugins/sc4_1882.c
Leland Lucius 5d62cdbd1e Add sc4 plug-in to CMake build for Windows and Mac
2020-02-27 00:52:34 -06:00

630 lines
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#include <stdlib.h>
#include <string.h>
#ifndef WIN32
#include "config.h"
#endif
#ifdef ENABLE_NLS
#include <libintl.h>
#endif
#define _ISOC9X_SOURCE 1
#define _ISOC99_SOURCE 1
#define __USE_ISOC99 1
#define __USE_ISOC9X 1
#include <math.h>
#include "ladspa.h"
#ifdef WIN32
#define _WINDOWS_DLL_EXPORT_ __declspec(dllexport)
int bIsFirstTime = 1;
void _init(); // forward declaration
#else
#define _WINDOWS_DLL_EXPORT_
#endif
#line 10 "sc4_1882.xml"
#include "util/db.h"
#include "util/rms.h"
#define A_TBL 256
#define SC4_RMS_PEAK 0
#define SC4_ATTACK 1
#define SC4_RELEASE 2
#define SC4_THRESHOLD 3
#define SC4_RATIO 4
#define SC4_KNEE 5
#define SC4_MAKEUP_GAIN 6
#define SC4_AMPLITUDE 7
#define SC4_GAIN_RED 8
#define SC4_LEFT_IN 9
#define SC4_RIGHT_IN 10
#define SC4_LEFT_OUT 11
#define SC4_RIGHT_OUT 12
static LADSPA_Descriptor *sc4Descriptor = NULL;
typedef struct {
LADSPA_Data *rms_peak;
LADSPA_Data *attack;
LADSPA_Data *release;
LADSPA_Data *threshold;
LADSPA_Data *ratio;
LADSPA_Data *knee;
LADSPA_Data *makeup_gain;
LADSPA_Data *amplitude;
LADSPA_Data *gain_red;
LADSPA_Data *left_in;
LADSPA_Data *right_in;
LADSPA_Data *left_out;
LADSPA_Data *right_out;
float amp;
float * as;
unsigned int count;
float env;
float env_peak;
float env_rms;
float gain;
float gain_t;
rms_env * rms;
float sum;
LADSPA_Data run_adding_gain;
} Sc4;
_WINDOWS_DLL_EXPORT_
const LADSPA_Descriptor *ladspa_descriptor(unsigned long index) {
#ifdef WIN32
if (bIsFirstTime) {
_init();
bIsFirstTime = 0;
}
#endif
switch (index) {
case 0:
return sc4Descriptor;
default:
return NULL;
}
}
static void cleanupSc4(LADSPA_Handle instance) {
#line 46 "sc4_1882.xml"
Sc4 *plugin_data = (Sc4 *)instance;
rms_env_free(plugin_data->rms);
free(plugin_data->as);
free(instance);
}
static void connectPortSc4(
LADSPA_Handle instance,
unsigned long port,
LADSPA_Data *data) {
Sc4 *plugin;
plugin = (Sc4 *)instance;
switch (port) {
case SC4_RMS_PEAK:
plugin->rms_peak = data;
break;
case SC4_ATTACK:
plugin->attack = data;
break;
case SC4_RELEASE:
plugin->release = data;
break;
case SC4_THRESHOLD:
plugin->threshold = data;
break;
case SC4_RATIO:
plugin->ratio = data;
break;
case SC4_KNEE:
plugin->knee = data;
break;
case SC4_MAKEUP_GAIN:
plugin->makeup_gain = data;
break;
case SC4_AMPLITUDE:
plugin->amplitude = data;
break;
case SC4_GAIN_RED:
plugin->gain_red = data;
break;
case SC4_LEFT_IN:
plugin->left_in = data;
break;
case SC4_RIGHT_IN:
plugin->right_in = data;
break;
case SC4_LEFT_OUT:
plugin->left_out = data;
break;
case SC4_RIGHT_OUT:
plugin->right_out = data;
break;
}
}
static LADSPA_Handle instantiateSc4(
const LADSPA_Descriptor *descriptor,
unsigned long s_rate) {
Sc4 *plugin_data = (Sc4 *)malloc(sizeof(Sc4));
float amp;
float *as = NULL;
unsigned int count;
float env;
float env_peak;
float env_rms;
float gain;
float gain_t;
rms_env *rms = NULL;
float sum;
#line 23 "sc4_1882.xml"
unsigned int i;
float sample_rate = (float)s_rate;
rms = rms_env_new();
sum = 0.0f;
amp = 0.0f;
gain = 0.0f;
gain_t = 0.0f;
env = 0.0f;
env_rms = 0.0f;
env_peak = 0.0f;
count = 0;
as = malloc(A_TBL * sizeof(float));
as[0] = 1.0f;
for (i=1; i<A_TBL; i++) {
as[i] = expf(-1.0f / (sample_rate * (float)i / (float)A_TBL));
}
db_init();
plugin_data->amp = amp;
plugin_data->as = as;
plugin_data->count = count;
plugin_data->env = env;
plugin_data->env_peak = env_peak;
plugin_data->env_rms = env_rms;
plugin_data->gain = gain;
plugin_data->gain_t = gain_t;
plugin_data->rms = rms;
plugin_data->sum = sum;
return (LADSPA_Handle)plugin_data;
}
#undef buffer_write
#undef RUN_ADDING
#undef RUN_REPLACING
#define buffer_write(b, v) (b = v)
#define RUN_ADDING 0
#define RUN_REPLACING 1
static void runSc4(LADSPA_Handle instance, unsigned long sample_count) {
Sc4 *plugin_data = (Sc4 *)instance;
/* RMS/peak (float value) */
const LADSPA_Data rms_peak = *(plugin_data->rms_peak);
/* Attack time (ms) (float value) */
const LADSPA_Data attack = *(plugin_data->attack);
/* Release time (ms) (float value) */
const LADSPA_Data release = *(plugin_data->release);
/* Threshold level (dB) (float value) */
const LADSPA_Data threshold = *(plugin_data->threshold);
/* Ratio (1:n) (float value) */
const LADSPA_Data ratio = *(plugin_data->ratio);
/* Knee radius (dB) (float value) */
const LADSPA_Data knee = *(plugin_data->knee);
/* Makeup gain (dB) (float value) */
const LADSPA_Data makeup_gain = *(plugin_data->makeup_gain);
/* Left input (array of floats of length sample_count) */
const LADSPA_Data * const left_in = plugin_data->left_in;
/* Right input (array of floats of length sample_count) */
const LADSPA_Data * const right_in = plugin_data->right_in;
/* Left output (array of floats of length sample_count) */
LADSPA_Data * const left_out = plugin_data->left_out;
/* Right output (array of floats of length sample_count) */
LADSPA_Data * const right_out = plugin_data->right_out;
float amp = plugin_data->amp;
float * as = plugin_data->as;
unsigned int count = plugin_data->count;
float env = plugin_data->env;
float env_peak = plugin_data->env_peak;
float env_rms = plugin_data->env_rms;
float gain = plugin_data->gain;
float gain_t = plugin_data->gain_t;
rms_env * rms = plugin_data->rms;
float sum = plugin_data->sum;
#line 51 "sc4_1882.xml"
unsigned long pos;
const float ga = attack < 2.0f ? 0.0f : as[f_round(attack * 0.001f * (float)(A_TBL-1))];
const float gr = as[f_round(release * 0.001f * (float)(A_TBL-1))];
const float rs = (ratio - 1.0f) / ratio;
const float mug = db2lin(makeup_gain);
const float knee_min = db2lin(threshold - knee);
const float knee_max = db2lin(threshold + knee);
const float ef_a = ga * 0.25f;
const float ef_ai = 1.0f - ef_a;
for (pos = 0; pos < sample_count; pos++) {
const float la = fabs(left_in[pos]);
const float ra = fabs(right_in[pos]);
const float lev_in = f_max(la, ra);
sum += lev_in * lev_in;
if (amp > env_rms) {
env_rms = env_rms * ga + amp * (1.0f - ga);
} else {
env_rms = env_rms * gr + amp * (1.0f - gr);
}
round_to_zero(&env_rms);
if (lev_in > env_peak) {
env_peak = env_peak * ga + lev_in * (1.0f - ga);
} else {
env_peak = env_peak * gr + lev_in * (1.0f - gr);
}
round_to_zero(&env_peak);
if ((count++ & 3) == 3) {
amp = rms_env_process(rms, sum * 0.25f);
sum = 0.0f;
if (isnan(env_rms)) {
// This can happen sometimes, but I don't know why
env_rms = 0.0f;
}
env = LIN_INTERP(rms_peak, env_rms, env_peak);
if (env <= knee_min) {
gain_t = 1.0f;
} else if (env < knee_max) {
const float x = -(threshold - knee - lin2db(env)) / knee;
gain_t = db2lin(-knee * rs * x * x * 0.25f);
} else {
gain_t = db2lin((threshold - lin2db(env)) * rs);
}
}
gain = gain * ef_a + gain_t * ef_ai;
buffer_write(left_out[pos], left_in[pos] * gain * mug);
buffer_write(right_out[pos], right_in[pos] * gain * mug);
}
plugin_data->sum = sum;
plugin_data->amp = amp;
plugin_data->gain = gain;
plugin_data->gain_t = gain_t;
plugin_data->env = env;
plugin_data->env_rms = env_rms;
plugin_data->env_peak = env_peak;
plugin_data->count = count;
*(plugin_data->amplitude) = lin2db(env);
*(plugin_data->gain_red) = lin2db(gain);
}
#undef buffer_write
#undef RUN_ADDING
#undef RUN_REPLACING
#define buffer_write(b, v) (b += (v) * run_adding_gain)
#define RUN_ADDING 1
#define RUN_REPLACING 0
static void setRunAddingGainSc4(LADSPA_Handle instance, LADSPA_Data gain) {
((Sc4 *)instance)->run_adding_gain = gain;
}
static void runAddingSc4(LADSPA_Handle instance, unsigned long sample_count) {
Sc4 *plugin_data = (Sc4 *)instance;
LADSPA_Data run_adding_gain = plugin_data->run_adding_gain;
/* RMS/peak (float value) */
const LADSPA_Data rms_peak = *(plugin_data->rms_peak);
/* Attack time (ms) (float value) */
const LADSPA_Data attack = *(plugin_data->attack);
/* Release time (ms) (float value) */
const LADSPA_Data release = *(plugin_data->release);
/* Threshold level (dB) (float value) */
const LADSPA_Data threshold = *(plugin_data->threshold);
/* Ratio (1:n) (float value) */
const LADSPA_Data ratio = *(plugin_data->ratio);
/* Knee radius (dB) (float value) */
const LADSPA_Data knee = *(plugin_data->knee);
/* Makeup gain (dB) (float value) */
const LADSPA_Data makeup_gain = *(plugin_data->makeup_gain);
/* Left input (array of floats of length sample_count) */
const LADSPA_Data * const left_in = plugin_data->left_in;
/* Right input (array of floats of length sample_count) */
const LADSPA_Data * const right_in = plugin_data->right_in;
/* Left output (array of floats of length sample_count) */
LADSPA_Data * const left_out = plugin_data->left_out;
/* Right output (array of floats of length sample_count) */
LADSPA_Data * const right_out = plugin_data->right_out;
float amp = plugin_data->amp;
float * as = plugin_data->as;
unsigned int count = plugin_data->count;
float env = plugin_data->env;
float env_peak = plugin_data->env_peak;
float env_rms = plugin_data->env_rms;
float gain = plugin_data->gain;
float gain_t = plugin_data->gain_t;
rms_env * rms = plugin_data->rms;
float sum = plugin_data->sum;
#line 51 "sc4_1882.xml"
unsigned long pos;
const float ga = attack < 2.0f ? 0.0f : as[f_round(attack * 0.001f * (float)(A_TBL-1))];
const float gr = as[f_round(release * 0.001f * (float)(A_TBL-1))];
const float rs = (ratio - 1.0f) / ratio;
const float mug = db2lin(makeup_gain);
const float knee_min = db2lin(threshold - knee);
const float knee_max = db2lin(threshold + knee);
const float ef_a = ga * 0.25f;
const float ef_ai = 1.0f - ef_a;
for (pos = 0; pos < sample_count; pos++) {
const float la = fabs(left_in[pos]);
const float ra = fabs(right_in[pos]);
const float lev_in = f_max(la, ra);
sum += lev_in * lev_in;
if (amp > env_rms) {
env_rms = env_rms * ga + amp * (1.0f - ga);
} else {
env_rms = env_rms * gr + amp * (1.0f - gr);
}
round_to_zero(&env_rms);
if (lev_in > env_peak) {
env_peak = env_peak * ga + lev_in * (1.0f - ga);
} else {
env_peak = env_peak * gr + lev_in * (1.0f - gr);
}
round_to_zero(&env_peak);
if ((count++ & 3) == 3) {
amp = rms_env_process(rms, sum * 0.25f);
sum = 0.0f;
if (isnan(env_rms)) {
// This can happen sometimes, but I don't know why
env_rms = 0.0f;
}
env = LIN_INTERP(rms_peak, env_rms, env_peak);
if (env <= knee_min) {
gain_t = 1.0f;
} else if (env < knee_max) {
const float x = -(threshold - knee - lin2db(env)) / knee;
gain_t = db2lin(-knee * rs * x * x * 0.25f);
} else {
gain_t = db2lin((threshold - lin2db(env)) * rs);
}
}
gain = gain * ef_a + gain_t * ef_ai;
buffer_write(left_out[pos], left_in[pos] * gain * mug);
buffer_write(right_out[pos], right_in[pos] * gain * mug);
}
plugin_data->sum = sum;
plugin_data->amp = amp;
plugin_data->gain = gain;
plugin_data->gain_t = gain_t;
plugin_data->env = env;
plugin_data->env_rms = env_rms;
plugin_data->env_peak = env_peak;
plugin_data->count = count;
*(plugin_data->amplitude) = lin2db(env);
*(plugin_data->gain_red) = lin2db(gain);
}
void _init() {
char **port_names;
LADSPA_PortDescriptor *port_descriptors;
LADSPA_PortRangeHint *port_range_hints;
#ifdef ENABLE_NLS
#define D_(s) dgettext(PACKAGE, s)
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, PACKAGE_LOCALE_DIR);
#else
#define D_(s) (s)
#endif
sc4Descriptor =
(LADSPA_Descriptor *)malloc(sizeof(LADSPA_Descriptor));
if (sc4Descriptor) {
sc4Descriptor->UniqueID = 1882;
sc4Descriptor->Label = "sc4";
sc4Descriptor->Properties =
LADSPA_PROPERTY_HARD_RT_CAPABLE;
sc4Descriptor->Name =
D_("SC4");
sc4Descriptor->Maker =
"Steve Harris <steve@plugin.org.uk>";
sc4Descriptor->Copyright =
"GPL";
sc4Descriptor->PortCount = 13;
port_descriptors = (LADSPA_PortDescriptor *)calloc(13,
sizeof(LADSPA_PortDescriptor));
sc4Descriptor->PortDescriptors =
(const LADSPA_PortDescriptor *)port_descriptors;
port_range_hints = (LADSPA_PortRangeHint *)calloc(13,
sizeof(LADSPA_PortRangeHint));
sc4Descriptor->PortRangeHints =
(const LADSPA_PortRangeHint *)port_range_hints;
port_names = (char **)calloc(13, sizeof(char*));
sc4Descriptor->PortNames =
(const char **)port_names;
/* Parameters for RMS/peak */
port_descriptors[SC4_RMS_PEAK] =
LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL;
port_names[SC4_RMS_PEAK] =
D_("RMS/peak");
port_range_hints[SC4_RMS_PEAK].HintDescriptor =
LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE | LADSPA_HINT_DEFAULT_MINIMUM;
port_range_hints[SC4_RMS_PEAK].LowerBound = 0;
port_range_hints[SC4_RMS_PEAK].UpperBound = 1;
/* Parameters for Attack time (ms) */
port_descriptors[SC4_ATTACK] =
LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL;
port_names[SC4_ATTACK] =
D_("Attack time (ms)");
port_range_hints[SC4_ATTACK].HintDescriptor =
LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE | LADSPA_HINT_DEFAULT_LOW;
port_range_hints[SC4_ATTACK].LowerBound = 1.5;
port_range_hints[SC4_ATTACK].UpperBound = 400;
/* Parameters for Release time (ms) */
port_descriptors[SC4_RELEASE] =
LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL;
port_names[SC4_RELEASE] =
D_("Release time (ms)");
port_range_hints[SC4_RELEASE].HintDescriptor =
LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE | LADSPA_HINT_DEFAULT_MIDDLE;
port_range_hints[SC4_RELEASE].LowerBound = 2;
port_range_hints[SC4_RELEASE].UpperBound = 800;
/* Parameters for Threshold level (dB) */
port_descriptors[SC4_THRESHOLD] =
LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL;
port_names[SC4_THRESHOLD] =
D_("Threshold level (dB)");
port_range_hints[SC4_THRESHOLD].HintDescriptor =
LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE | LADSPA_HINT_DEFAULT_MAXIMUM;
port_range_hints[SC4_THRESHOLD].LowerBound = -30;
port_range_hints[SC4_THRESHOLD].UpperBound = 0;
/* Parameters for Ratio (1:n) */
port_descriptors[SC4_RATIO] =
LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL;
port_names[SC4_RATIO] =
D_("Ratio (1:n)");
port_range_hints[SC4_RATIO].HintDescriptor =
LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE | LADSPA_HINT_DEFAULT_1;
port_range_hints[SC4_RATIO].LowerBound = 1;
port_range_hints[SC4_RATIO].UpperBound = 20;
/* Parameters for Knee radius (dB) */
port_descriptors[SC4_KNEE] =
LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL;
port_names[SC4_KNEE] =
D_("Knee radius (dB)");
port_range_hints[SC4_KNEE].HintDescriptor =
LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE | LADSPA_HINT_DEFAULT_LOW;
port_range_hints[SC4_KNEE].LowerBound = 1;
port_range_hints[SC4_KNEE].UpperBound = 10;
/* Parameters for Makeup gain (dB) */
port_descriptors[SC4_MAKEUP_GAIN] =
LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL;
port_names[SC4_MAKEUP_GAIN] =
D_("Makeup gain (dB)");
port_range_hints[SC4_MAKEUP_GAIN].HintDescriptor =
LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE | LADSPA_HINT_DEFAULT_0;
port_range_hints[SC4_MAKEUP_GAIN].LowerBound = 0;
port_range_hints[SC4_MAKEUP_GAIN].UpperBound = +24;
/* Parameters for Amplitude (dB) */
port_descriptors[SC4_AMPLITUDE] =
LADSPA_PORT_OUTPUT | LADSPA_PORT_CONTROL;
port_names[SC4_AMPLITUDE] =
D_("Amplitude (dB)");
port_range_hints[SC4_AMPLITUDE].HintDescriptor =
LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE;
port_range_hints[SC4_AMPLITUDE].LowerBound = -40;
port_range_hints[SC4_AMPLITUDE].UpperBound = +12;
/* Parameters for Gain reduction (dB) */
port_descriptors[SC4_GAIN_RED] =
LADSPA_PORT_OUTPUT | LADSPA_PORT_CONTROL;
port_names[SC4_GAIN_RED] =
D_("Gain reduction (dB)");
port_range_hints[SC4_GAIN_RED].HintDescriptor =
LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE;
port_range_hints[SC4_GAIN_RED].LowerBound = -24;
port_range_hints[SC4_GAIN_RED].UpperBound = 0;
/* Parameters for Left input */
port_descriptors[SC4_LEFT_IN] =
LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO;
port_names[SC4_LEFT_IN] =
D_("Left input");
port_range_hints[SC4_LEFT_IN].HintDescriptor = 0;
/* Parameters for Right input */
port_descriptors[SC4_RIGHT_IN] =
LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO;
port_names[SC4_RIGHT_IN] =
D_("Right input");
port_range_hints[SC4_RIGHT_IN].HintDescriptor = 0;
/* Parameters for Left output */
port_descriptors[SC4_LEFT_OUT] =
LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO;
port_names[SC4_LEFT_OUT] =
D_("Left output");
port_range_hints[SC4_LEFT_OUT].HintDescriptor = 0;
/* Parameters for Right output */
port_descriptors[SC4_RIGHT_OUT] =
LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO;
port_names[SC4_RIGHT_OUT] =
D_("Right output");
port_range_hints[SC4_RIGHT_OUT].HintDescriptor = 0;
sc4Descriptor->activate = NULL;
sc4Descriptor->cleanup = cleanupSc4;
sc4Descriptor->connect_port = connectPortSc4;
sc4Descriptor->deactivate = NULL;
sc4Descriptor->instantiate = instantiateSc4;
sc4Descriptor->run = runSc4;
sc4Descriptor->run_adding = runAddingSc4;
sc4Descriptor->set_run_adding_gain = setRunAddingGainSc4;
}
}
void _fini() {
if (sc4Descriptor) {
free((LADSPA_PortDescriptor *)sc4Descriptor->PortDescriptors);
free((char **)sc4Descriptor->PortNames);
free((LADSPA_PortRangeHint *)sc4Descriptor->PortRangeHints);
free(sc4Descriptor);
}
}
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