void Compressor::process(int frames, float* ip, float *op)
{
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(_makeupGain);
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 (int pos = 0; pos < frames; pos++) {
const float la = fabs(ip[pos * 2]);
const float ra = fabs(ip[pos * 2 + 1]);
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.process(sum * 0.25f);
sum = 0.0f;
if (qIsNaN(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;
op[pos * 2] = ip[pos * 2] * gain * mug;
op[pos * 2+1] = ip[pos * 2 + 1] * gain * mug;
}
// printf("gain %f\n", gain);
// amplitude = lin2db(env);
// gain_red = lin2db(gain);
}
/* Read and reset the recent peak sample */
static
float read_peak()
{
float peakdb = lin2db(peak);
peak = 0.0f;
return peakdb;
}
void CMixerFrame::VolChanged(int Value)
{
ui->VolLabel->setText(QString::number(lin2db((float)Value*0.01),'f',2)+" dB");
if (!Mixer)
{
return;
}
Mixer->Level[Index]=(float)Value*0.01;
}
static void lin2db_table(FILE * out, int n, int s)
{
int i;
double v,db,stp;
double dbmax;
double sc;
stp = 1.0 / (n+1);
dbmax = -lin2db(stp); /* */
sc = (double) s / dbmax;
for (i=0, v=stp; i<n; ++i, v+=stp) {
int r;
db = (i==n-1) ? 0 : lin2db(v);
r = ( (dbmax + db) * sc);
fprintf(out,"%lf %d,\n", db, r);
}
}
CMixerFrame::CMixerFrame(QWidget *parent) :
QFrame(parent),
ui(new Ui::CMixerFrame)
{
ui->setupUi(this);
Mixer=NULL;
connect(ui->VolSlider,SIGNAL(valueChanged(int)),this,SLOT(VolChanged(int)));
connect(ui->PanDial,SIGNAL(valueChanged(int)),this,SLOT(PanChanged(int)));
connect(ui->EffectDial,SIGNAL(valueChanged(int)),this,SLOT(EffectChanged(int)));
connect(ui->BypassButton,SIGNAL(clicked(bool)),this,SLOT(BypassButtonClicked(bool)));
connect(ui->SoloButton,SIGNAL(clicked(bool)),this,SLOT(SoloButtonClicked(bool)));
connect(ui->MuteButton,SIGNAL(clicked(bool)),this,SLOT(MuteButtonClicked(bool)));
ui->VolLabel->setText(QString::number(lin2db((float)ui->VolSlider->value()*0.01),'f',2)+" dB");
}
static void runAddingSc4m(LADSPA_Handle instance, unsigned long sample_count) {
Sc4m *plugin_data = (Sc4m *)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);
/* Input (array of floats of length sample_count) */
const LADSPA_Data * const input = plugin_data->input;
/* Output (array of floats of length sample_count) */
LADSPA_Data * const output = plugin_data->output;
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;
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 lev_in = input[pos];
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;
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(output[pos], input[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);
}
static void runSc3(LV2_Handle instance, uint32_t sample_count)
{
Sc3 *plugin_data = (Sc3 *)instance;
const float attack = *(plugin_data->attack);
const float release = *(plugin_data->release);
const float threshold = *(plugin_data->threshold);
const float ratio = *(plugin_data->ratio);
const float knee = *(plugin_data->knee);
const float makeup_gain = *(plugin_data->makeup_gain);
const float chain_bal = *(plugin_data->chain_bal);
const float * const sidechain = plugin_data->sidechain;
const float * const left_in = plugin_data->left_in;
const float * const right_in = plugin_data->right_in;
float * const left_out = plugin_data->left_out;
float * const right_out = plugin_data->right_out;
rms_env * rms = plugin_data->rms;
float * as = plugin_data->as;
float sum = plugin_data->sum;
float amp = plugin_data->amp;
float gain = plugin_data->gain;
float gain_t = plugin_data->gain_t;
float env = plugin_data->env;
unsigned int count = plugin_data->count;
unsigned long pos;
const float ga = 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 chain_bali = 1.0f - chain_bal;
const float ef_a = ga * 0.25f;
const float ef_ai = 1.0f - ef_a;
for (pos = 0; pos < sample_count; pos++) {
const float lev_in = chain_bali * (left_in[pos] + right_in[pos]) * 0.5f
+ chain_bal * sidechain[pos];
sum += lev_in * lev_in;
if (amp > env) {
env = env * ga + amp * (1.0f - ga);
} else {
env = env * gr + amp * (1.0f - gr);
}
if (count++ % 4 == 3) {
amp = rms_env_process(rms, sum * 0.25f);
sum = 0.0f;
if (isnan(env)) {
// This can happen sometimes, but I dont know why
env = 0.0f;
} else 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->count = count;
}
static void runAddingSc3(LADSPA_Handle instance, unsigned long sample_count) {
Sc3 *plugin_data = (Sc3 *)instance;
LADSPA_Data run_adding_gain = plugin_data->run_adding_gain;
/* 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);
/* Chain balance (float value) */
const LADSPA_Data chain_bal = *(plugin_data->chain_bal);
/* Sidechain (array of floats of length sample_count) */
const LADSPA_Data * const sidechain = plugin_data->sidechain;
/* 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 gain = plugin_data->gain;
float gain_t = plugin_data->gain_t;
rms_env * rms = plugin_data->rms;
float sum = plugin_data->sum;
#line 49 "sc3_1427.xml"
unsigned long pos;
const float ga = 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 chain_bali = 1.0f - chain_bal;
const float ef_a = ga * 0.25f;
const float ef_ai = 1.0f - ef_a;
for (pos = 0; pos < sample_count; pos++) {
const float lev_in = chain_bali * (left_in[pos] + right_in[pos]) * 0.5f
+ chain_bal * sidechain[pos];
sum += lev_in * lev_in;
if (amp > env) {
env = env * ga + amp * (1.0f - ga);
} else {
env = env * gr + amp * (1.0f - gr);
}
if (count++ % 4 == 3) {
amp = rms_env_process(rms, sum * 0.25f);
sum = 0.0f;
if (isnan(env)) {
// This can happen sometimes, but I dont know why
env = 0.0f;
} else 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->count = count;
}
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_1434.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);
}
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);
}
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);
}
static void runSc2(LV2_Handle instance, uint32_t sample_count)
{
Sc2 *plugin_data = (Sc2 *)instance;
const float attack = *(plugin_data->attack);
const float release = *(plugin_data->release);
const float threshold = *(plugin_data->threshold);
const float ratio = *(plugin_data->ratio);
const float knee = *(plugin_data->knee);
const float makeup_gain = *(plugin_data->makeup_gain);
const float * const sidechain = plugin_data->sidechain;
const float * const input = plugin_data->input;
float * const output = plugin_data->output;
rms_env * rms = plugin_data->rms;
float * as = plugin_data->as;
float sum = plugin_data->sum;
float amp = plugin_data->amp;
float gain = plugin_data->gain;
float gain_t = plugin_data->gain_t;
float env = plugin_data->env;
unsigned int count = plugin_data->count;
unsigned long pos;
const float ga = 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++) {
sum += sidechain[pos] * sidechain[pos];
if (amp > env) {
env = env * ga + amp * (1.0f - ga);
} else {
env = env * gr + amp * (1.0f - gr);
}
if (count++ % 4 == 3) {
amp = rms_env_process(rms, sum * 0.25f);
sum = 0.0f;
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(output[pos], input[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->count = count;
}